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No. 24; Updated March 2011
Click here to download and print a PDF version of this document.
Parents are usually the first to recognize that their child has a problem with emotions or behavior. Still, the decision to seek professional help can be difficult and painful for a parent. The first step is to gently try to talk to the child. An honest open talk about feelings can often help. Parents may choose to consult with the child's physicians, teachers, members of the clergy, or other adults who know the child well. These steps may resolve the problems for the child and family.
Following are a few signs which may indicate that a child and adolescent psychiatric evaluation will be useful.
- Marked fall in school performance
- Poor grades in school despite trying very hard
- Severe worry or anxiety, as shown by regular refusal to go to school, go to sleep or take part in activities that are normal for the child's age
- Frequent physical complaints
- Hyperactivity; fidgeting; constant movement beyond regular playing with or without difficulty paying attention
- Persistent nightmares
- Persistent disobedience or aggression (longer than 6 months) and provocative opposition to authority figures
- Frequent, unexplainable temper tantrums
- Threatens to harm or kill oneself
- Marked decline in school performance
- Inability to cope with problems and daily activities
- Marked changes in sleeping and/or eating habits
- Extreme difficulties in concentrating that get in the way at school or at home
- Sexual acting out
- Depression shown by sustained, prolonged negative mood and attitude, often accompanied by poor appetite, difficulty sleeping or thoughts of death
- Severe mood swings
- Strong worries or anxieties that get in the way of daily life, such as at school or socializing
- Repeated use of alcohol and/or drugs
- Intense fear of becoming obese with no relationship to actual body weight, excessive dieting, throwing up or using laxatives to loose weight
- Persistent nightmares
- Threats of self-harm or harm to others
- Self-injury or self destructive behavior
- Frequent outbursts of anger, aggression
- Repeated threats to run away
- Aggressive or non-aggressive consistent violation of rights of others; opposition to authority, truancy, thefts, or vandalism
- Strange thoughts, beliefs, feelings, or unusual behaviors
See other Facts for Families:
#25 Where to Seek Help for Your Child
#52 Comprehensive Psychiatric Evaluation
#57 Normal Adolescent Development, Middle School, and Early High School Years
#58 Normal Adolescent Development, Late High School Year and Beyond
#00 Definition of a Child and Adolescent Psychiatrist
The American Academy of Child and Adolescent Psychiatry (AACAP) represents over 8,500 child and adolescent psychiatrists who are physicians with at least five years of additional training beyond medical school in general (adult) and child and adolescent psychiatry.
Facts for Families© information sheets are developed, owned and distributed by AACAP. Hard copies of Facts sheets may be reproduced for personal or educational use without written permission, but cannot be included in material presented for sale or profit. All Facts can be viewed and printed from the AACAP website (www.aacap.org). Facts sheets may not be reproduced, duplicated or posted on any other website without written consent from AACAP. Organizations are permitted to create links to AACAP's website and specific Facts sheets. For all questions please contact the AACAP Communications & Marketing Coordinator, ext. 154.
If you need immediate assistance, please dial 911.
Copyright © 2012 by the American Academy of Child and Adolescent Psychiatry.
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Average life span in the wild: 12 years
Size: 21 in (50 cm)
Weight: 14.4 oz (408 g)
Did you know? Chameleons don't change colors to match their surroundings. Each species displays distinct color patterns to indicate specific reactions or emotions.
The Meller's chameleon is the largest of the chameleons not native to Madagascar. Their stout bodies can grow to be up to two feet (two-thirds of a meter) long and weigh more than a pound (one-half kilogram).
Meller's distinguish themselves from their universally bizarre-looking cousins with a single small horn protruding from the front of their snouts. This and their size earn them the common name "giant one-horned chameleon."
They are fairly common in the savanna of East Africa, including Malawi, northern Mozambique, and Tanzania. Almost one-half of the world’s chameleons live on the island of Madagascar.
As with all chameleons, Meller's will change colors in response to stress and to communicate with other chameleons. Their normal appearance is deep green with yellow stripes and random black spots. Females are slightly smaller, but are otherwise indistinguishable from males.
They subsist on insects and small birds, using their camouflage and a lightning-fast, catapulting tongue, which can be up to 20 inches (50 centimeters) long, to ambush prey.
Exotic pet enthusiasts often attempt to keep Meller's chameleons as pets. However, they are highly susceptible to even the slightest level of stress and are very difficult to care for in captivity. In the wild, they can live as long as 12 years.
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Here to There: A History of Mapping
From the 16th to 18th centuries, many European mapmakers were convinced that California was an island — an Edenic paradise populated by black Amazons. The error persisted for over a hundred years after expeditions had proven that California was, in fact, firmly attached to the mainland. The idea of California as a fierce paradise appealed to Europeans, who were reluctant to let the mundane reality interfere with their vision of the world.
So in that spirit, we’re devoting this episode of BackStory to maps — asking what they show us about who we are and and where we want to go. How do maps shape the way we see our communities and our world? What do they tell us about the kind of information we value? And what do they distort, or ignore?
Please help us shape this show! Share your questions, ideas and stories below. Have opinions on New York vs. D.C. subway maps? On the merits or shortcomings of Google Maps? And do you even still use old-fashioned, ink-and-paper maps? Leave us a comment!
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With the development of science and technology, computer has become more and more popular in our daily life, which is intended to be a part of our life. But at the same time it also brings the safety problem, because increasing number of bad people would like to break into computer systems to steal the secret information. It seems that computer safety has been a serious problem by now. Maybe you could learn something about the safety terms in Microsoft so that you could adopt the different methods according to different cases.
What is malware? In fact malware, short for “malicious software”, is any kind of software which is installed without your complete permission and is not in need at all.The famous malware areviruses, worms, and Trojan horses, which are almost known to us all. Even though you are not familiar with them, you must have heard of it at ordinary times. If you want to protect your computer from the malware, you could make sure that the automatic updating is turned on all the time to get the latest updates.
2 antispyware software
Antispyware software helps protect your computer, and prevent the pop-ups, slow performance, and security threats caused by spyware and other adverse software. Every computer user must keep antispyware software up to date in order to keep in touch with the latest spyware. Aimed at protecting our computer, we could use Microsoft Security Essentials, free download software, to be against spyware and other malicious software.
A firewall is used to help screen out hackers, viruses, and worms that try to attack your computer through the Internet.In fact, if you are the one who use the computer at home, the most efficient and important step is to enable firewall when you start your computer. A virus will slip through and infect you; the only effective way by protecting yourself is using a firewall. A firewall monitors your Internet connections and allows you to specify which programs are allowed to connect and which are not.
4 antivirus software
Antivirus software is a kind of computer program which can be used to test, defend, and take actions to remove or delete malicious software program. As we all know, computer virus is some programs, which can specially disturb computer operation. So we should update antivirus software in regular time to prevent against the latest virus.
5 Windows password
Besides the above mentioned software, you could have an alternative at the same time, namely Windows password. With a password like this, you can prevent your privacy from being let out or being viewed. Of course you should set up a Windows password reset disk to set the password reset in case that you forget it.
As a computer user, you should have a general knowledge of these safety terms so that you can protect your computer better. And with these terms, your computer can be protected better than that without them. In a word, please have a brief understanding of them in the first place, and then you could know how important they are.
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Just as there are many variants and forms of electronic malware and Internet-based threats around the globe, so there are many forms of protection against these threats. Signature-based detection is one of the multifarious forms of defense that have been developed in order to keep us safe from malicious content.
Although signature-based detection can be argued to have been overshadowed by more sophisticated methods of protection in some environments, it remains as a core ‘technique’ featuring in the anti-virus controls of packages and suites that work to protect a user’s system today.
How does signature-based detection work?
Signature-based detection works by scanning the contents of computer files and cross-referencing their contents with the “code signatures” belonging to known viruses. A library of known code signatures is updated and refreshed constantly by the anti-virus software vendor.
If a viral signature is detected, the software acts to protect the user’s system from damage. Suspected files are typically quarantined and/or encrypted in order to render them inoperable and useless.
Clearly there will always be new and emerging viruses with their own unique code signatures. So once again, the anti-virus software vendor works constantly to assess and assimilate new signature-based detection data as it becomes available, often in real time so that updates can be pushed out to users immediately and zero-day vulnerabilities can be avoided.
Next-generation signature-based detection
New variants of computer virus are of course developed every day and security companies now work to also protect users from malware that attempts to disguise itself from traditional signature-based detection. Virus authors have tried to avoid their malicious code being detected by writing “oligomorphic“, “polymorphic” and more recently “metamorphic” viruses with signatures that are either disguised or changed from those that might be held in a signature directory.
Despite these developments, the Internet at large does of course still function on a daily basis. Populated as it is by users who not only have up to date security software installed, but also by those who have educated themselves as to the type of risks discussed here.
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By Jason Kohn, Contributing Columnist
Like many of us, scientific researchers tend to be creatures of habit. This includes research teams working for the National Oceanic and Atmospheric Administration (NOAA), the U.S. government agency charged with measuring the behavior of oceans, atmosphere, and weather.
Many of these climate scientists work with massive amounts of data – for example, the National Weather Service collecting up-to-the-minute temperature, humidity, and barometric readings from thousands of sites across the United States to help forecast weather. Research teams then rely on some the largest, most powerful high-performance computing (HPC) systems in the world to run models, forecasts, and other research computations.
Given the reliance on HPC resources, NOAA climate researchers have traditionally worked onsite at major supercomputing facilities, such as Oak Ridge National Laboratory in Tennessee, where access to supercomputers are just steps away. As researchers crate ever more sophisticated models of ocean and atmospheric behavior, however, the HPC requirements have become truly staggering.
Now, NOAA is using a super-high-speed network called “n-wave” to connect research sites across the United States with the computing resources they need. The network has been operating for several years, and today transports enough data to fill a 10-Gbps network to full capacity, all day, every day. NOAA is now upgrading this network to allow even more data traffic, with the goal of ultimately supporting 100-Gbps data rates.
“Our scientists were really used to having a computer in their basement,” says Jerry Janssen, manager, n-wave Network, NOAA, in a video about the project. “When that computer moved a couple thousand miles away, we had to give them a lot of assurances that, one, the data would actually move at the speed they needed it to move, but also that they could rely on it to be there. The amount of data that will be generated under this model will exceed 80-100 Terabits per day.”
The n-wave project means much more than just a massive new data pipe. It represents a fundamental shift in the way that scientists can conduct their research, allowing them to perform hugely demanding supercomputer runs of their data from dozens of remote locations. As a result, it gives NOAA climate scientists much more flexibility in where and how they work.
“For the first time, NOAA scientists and engineers in completely separate parts of the country, all the way to places like Alaska and Hawaii and Puerto Rico, will have the bandwidth they need, without restriction,” says Janssen. “NOAA will now be able to do things it never thought it could do before.”
In addition to providing fast, stable access to HPC resources, n-wave is also allowing NOAA climate scientists to share resources much more easily with scientists in the U.S. Department of Energy and other government agencies. Ideally, this level of collaboration and access to supercomputing resources will help climate scientists continue to develop more effective climate models, improve weather forecasts, and allow us to better understand our climate.
Powering Vital Climate Research
The high-speed nationwide HPC connectivity capability provided by n-wave is now enabling a broad range of NOAA basic science and research activities. Examples include:
- Basic data dissemination, allowing research teams to collect up-to-the-minute data on ocean, atmosphere, and weather from across the country, and make that data available to other research teams and agencies nationwide.
- Ensemble forecasting, where researchers run multiple HPC simulations using different initial conditions and modeling techniques, in order to refine their atmospheric forecasts and minimize errors.
- Severe weather modeling, where scientists draw on HPC simulations, real-time atmospheric data, and archived storm data to better understand and predict the behavior of storms.
- Advancing understanding of the environment to be able to better predict short-term and long-term environmental changes, mitigate threats, and provide the most accurate data to inform policy decisions.
All of this work is important, and will help advance our understanding of Earth’s climate. And it is all a testament to the amazing networking technologies and infrastructure that scientists now have at their disposal, which puts the most powerful supercomputing resources in the world at their fingertips – even when they are thousands of miles away.
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Correctly identifying what is causing a problem is the most important step in pest control. We do our best here to help you do that. Sometimes we can identify the cause accurately enough from your phone or e-mail description of what is happening and what you see. Sometimes we can do this from photographs you submit, either electronically or printed on paper. But sometimes word descriptions and photographs aren't quite good enough, and we ask you to submit a specimen of an arthropod you have found, or the damage it has caused.
The information we give you is only as good as the information you give to us. I can't identify specimens that look like the one in the photograph above. Here are some hints that will help all of us:
1. Make sure any photographs are CLEAR and take several, from very close up to farther away. Make sure you have sufficient light, or that you compensate with your camera to make sure we can clearly see what you are trying to show us. Learn how to use the close up mode on your digital camera.
2. You have 20,000 of something flying around? Please give us at least - oh maybe - six of them. If it's something unusual, we need at least one full, intact set of key characteristics. If there are big individuals and little ones, try to submit a few of each size. Maybe they're different, maybe they're not, but we won't know for sure unless we see them.
3. Label your material. Where and when was it found? What does it seem to be doing?
4. You had 20,000 last week, but you can't find even one now? Maybe you don't have the problem anymore. Keep an eye on the situation and try not to worry.
5. That doesn't go for termites. If you think you had a termite swarm, worry! Keep a close eye on it, try to find a least one, even if it's only a wing, and submit it for identification.
6. You can kill most small pests by putting them in the freezer or by dropping them into alcohol. Any sort of alcohol will do. The alcohol not only kills them, it also preserves them. Never submit arthropod specimens in water (unless they are living aquatic animals). Moths and butterflies are easier to identify if they are not preserved in alcohol, so just freeze them and bring them in dry. We can also take live specimens.
7. Some insects and mites are most easily submitted on or in a piece of the plant they are living on. It's best if the sample is as fresh as possible. Don't bake it in a hot car.
8. A few creatures can't be identified from the sample you submit. Ants are most easily identified from the workers (the ones without the wings). Some spiders can only be identified to species if you have adults of both sexes. Small larvae, nymphs and eggs can be extremely difficult to identify. That's just the way it is.
9. Entomologists specialize. Sometimes we have to send things off. If they only have to go to the university, turn-around time can be quick. If they have to go further, it may be a long time before you hear back. This doesn't happen that often, though.
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died Aug. 28, 1818, St. Charles, Mo., U.S.
black pioneer trader and founder of the settlement that later became the city of Chicago.
Du Sable, whose French father had moved to Haiti and married a black woman there, is believed to have been a freeborn. At some time in the 1770s he went to the Great Lakes area of North America, settling on the shore of Lake Michigan at the mouth of the Chicago River, with his Potawatomi wife, Kittihawa (Catherine). His loyalty to the French and the Americans led to his arrest in 1779 by the British, who took him to Fort Mackinac. From 1780 to 1783 or 1784 he managed for his captors a trading post called the Pinery on the St. Clair River in present-day Michigan, after which he returned to the site of Chicago. By 1790 Du Sable's establishment there had become an important link in the region's fur and grain trade.
In 1800 he sold out and moved to Missouri, where he continued as a farmer and trader until his death. But his 20-year residence on the shores of Lake Michigan had established his title as Father of Chicago.
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Common Core Catholic Identity Initiative
A national working group has begun the Common Core Catholic Identity Initiative (CCCII) to develop and disseminate resources and guidelines to assist Catholic elementary and secondary schools in integrating elements of Catholic identity (Catholic values, Scripture, Church social teachings, encyclicals, etc.) into curriculum and instruction based on the Common Core State Standards.
The initial phase of CCCII focuses on K-8 English/Language Arts/ Literacy. Resources for other subjects and for 9-12 curriculum will be developed in later phases.
Forty-six states have agreed to adopt the Common Core State Standards, a set of high quality K-12 learning standards that includes rigorous content and application of knowledge using higher-order thinking skills, leading students to college and career readiness. Currently, Catholic schools are assessing what the implications of the standards and accompanying assessments may be for them.
While Catholic schools have their own local or diocesan standards, their ability to continue to provide high-quality education for their students is compelling them to consider adoption of the common core standards. Catholic schools will be impacted as curriculum resources and professional development opportunities become aligned with Common Core State Standards by producers of instructional materials, college teacher preparation programs, or regulations for participation in the federal programs that currently benefit their students and teachers. Within this environment, maintaining the uniqueness and integrity of the Catholic school will require integrating the demands of their mission and the academic expectations of their constituents and the wider education community.
To assist Catholic schools with enhancing Catholic identity integrated into the curriculum, the Common Core Catholic Identity Initiative (CCCII) has been launched as a collaborative project involving Catholic universities, corporations and sponsors invested in Catholic education, and the National Catholic Educational Association (NCEA).
The Common Core Catholic Identity Initiative has two goals:
- to empower Catholic schools and dioceses to design and direct the implementation of the Common Core standards within the culture and context of a Catholic school curriculum
- to infuse the Common Core standards with the faith/principles/values/social justice themes inherent in the mission and Catholic identity of the school.
The CCCII project aims to accomplish its goals by creating a process and a product:
Phase 1: Gather approximately 35 practitioners and curriculum and catechetics experts to pilot a CCCII ELA Unit development process to be shared with the larger Catholic educational community. (June 2012)
Phase 2: Revise and refine the unit development process so that it can be replicated in dioceses around the country.
Phase 3: Invite participation in development of additional CCCII ELA Units by Catholic educators around the country.
Phase 1: Utilize the expertise and strength of experienced and innovative teachers to develop complete units/exemplars that join Catholic identify with the Common Core curriculum standards. Utilize the expertise of CCCII leaders to develop supporting resources and guidelines. (June 2012)
Phase 2: Post exemplar units, guidelines, and resources developed in for the June 2012 launch for open access by Catholic educators on the Catholic School Standards Project Website www.catholicschoolsstandards.org) . (July 2012)
Phase 3: Expand exemplar units and Catholic Identity resources available for use by local Catholic schools.
Tailor the CCCII Unit development process for Catholic secondary schools.
Expand CCCII to include additional subject areas.
Meet the CCCII Leadership and Planning Teams
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My passion is studying early man, specifically how we became who we are. Is our violence an aberration or part and parcel of survival? No other mammal kills their own, but maybe–as the alpha on the planet–our greatest threat to our survival is our own species, so we’re forced to destroy each other.
What was lacking in H. Habilis that led to their extinction, to be replaced by the big-brained, scrawny Homo erectus? Habilis was preyed upon by species with bigger claws, sharper teeth and thicker skin. Habilis (and my friend Lyta) scavenged their left-overs, in between hiding from the imposing mammals that dominated the Plio-Pleistocene African savanna. But, eventually hiding wasn’t enough and H. erectus took over (we don’t know if they fought with each other or if habilis left ‘with a whimper’).
H. erectus, with his longer lower limbs for running and walking efficiency, his bigger brain especially in the areas for planning and forethought (and speech depending upon whose research you’re reading) was tall, thin, and barrel-chested, hardly daunting in a world of sabertooth cats, mammoth and giant sloths. Yet , it is he who spread from Africa to China, India, the Middle East, Java. It is he–not predator cats or alligators–who developed a highly adaptable culture allowing him to survive a wide range of climates and habitats.
That is the first of their firsts. Want more?
- first appearance of systematic hunting.
- first use of fire (though arguably no control of it)
- first indication of extended childhood (thanks to the helplessness of their infants)
- first indication of the ability to lead a more complex life (their Acheulian tools were sophisticated, their hunting was planned)
- first to wear clothing (how else to survive Georgia and China)
- first to create complex tools and weapons
Their faces were short but wide and the nose projected forward, hinting at the typical human external nose. They had a pronounced brow ridge. Their cranium was long and low and somewhat flattened at the front and back. The cranial bone was thicker than earlier hominids. Remnants show damage from being hit in the head by something like clubs or heavy rocks. Their arms and legs were also robust, with thicker bones and clear evidence of being heavily muscled. The suspicion is they were a more violent species than habilis. Is that why habilis disappeared? The tougher group survived and bred offspring with their thicker, more protective skulls.
You probably remember my friend Lyta is a Homo habilis (see her page). I’ve lived her life through Otto‘s ability to ‘see’ into the past. Where other primates rest when they have enough to eat, she thinks and shares information with her band. Where most mammals sleep when they aren’t hunting, playing or resting, Lyta worked–knapped tools, collected food for a cache, planned. I have come to believe that her survival depended not so much on her physique (which was sorely lacking in that physical time) as what was inside of her: her courage, ability to plan ahead, strength of her convictions, what we call ‘morals’. These are very human traits that can’t be preserved in bones and teeth. I wouldn’t know they existed if not for Otto. I’ve posted an excerpt from that research on Scribd.com (Born in a Treacherous Time).
My next project is to determine how man migrated throughout the world. Where did he get the courage? Was he forced out because he couldn’t defend his territory? Or was it wanderlust? Was he a seeker, wanting more for his life? Did he get bored and need to challenge his constantly-growing brain?
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Creator: Gust, Iris
Description: The brochure promotes urban transportation policy to increase the use of renewable energy to 100%. Seen globally, transport is one of the main sources of greenhouse gas emissions. Yet fossil fuels are becoming scarce, will become increasingly expensive and will eventually stop being viable as transport fuels. Before this happens, climate change will have begun to have a serious impact on human lives. The authors believe that it is crucial to replace fossil fuels with renewable energy as soon as possible, especially in the transport sector. Making urban transport independent of fossil fuel is a great challenge, but the authors cite growing evidence that it can be achieved.
Contributing Partner: UNT Libraries
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Although uncommon, an entirely different group of factors plays a role when an athlete suffers a stroke.
Head and neck trauma are often factors in stroke during athletic competitions. Direct head trauma can result in leakage from blood vessels, depriving large regions of the brain of necessary nutrients.
Violent forward and backward movement of the head can result in tearing the inner lining of vital arteries responsible for directing blood to the brain. This condition, known as arterial dissection, can form a clot within the affected blood vessel or become a source of small clots. These smaller clots often move toward the brain as emboli and block other arteries.
Treatment for arterial dissection involves the use of blood thinning medications and avoiding violent collision sports.
Another common risk factor for stroke in athletes is the existence of a patent foramen ovale (PFO). A PFO is a hole between the upper chambers of the heart, the right and left atria. The foramen ovale forms in the fourth week of embryonic development and should close in the first three months after birth. When it does not close, it is considered patent or open.
This abnormal channel allows direct passage of blood clots to the brain. These clots often originate in the legs and may result from immobilized lower extremities.
PFOs can be treated with equal success by surgical closure or blood thinning medications. Athletes appear to do better with surgical closure and usually make a full recovery to return to sports.
While considered rare, strokes do occur in athletes and treatment requires a different approach.
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A 2012 survey conducted by the Association for Pet Obesity Prevention found 52.5 percent of dogs and 58.3 percent of cats to be overweight or obese by their veterinarian. This translates to nearly 80 million dogs and cats in America with a weight problem. Dr. George Banta, chair of the Veterinary Technology department at Brown Mackie College - Akron and Dr. Mary Jo Wagner, attending veterinarian at Argosy University, Twin Cities, offer useful information for pet owners.
How can you tell if your pet is overweight? “It’s not the number of pounds, it’s how the animal carries the weight,” says Banta. “The number on the Body Condition Score is more important than pounds.” The Body Condition Score offers a way to assess the condition of an animal, usually on a scale from one to five, taking into account height, weight, and relative proportions of muscle and fat.
With a little knowledge, you can use sight and touch to figure your pet’s general condition. “When looking down on a dog or cat from above,” says Banta, “the body should slim to a discernable waist. An animal is too thin if you can see the spine or ribs; however, you should be able to feel them beneath the fur.” An animal of ideal weight will also display a pelvic tuck when viewed from the side.
“Just like humans, when animals overeat, they face increased risk for health problems like diabetes, heart disease, gastrointestinal problems and cancer,” continues Banta. In fact, these risks also include a shortened life expectancy.
Many owners feed pets according to the manufacturer’s suggested amounts; however, this instruction may not be right for your pet. “These guidelines are meant to cover all animals of a certain weight range,” says Wagner. “An owner must consider the age and activity level of each pet. The more active they are, the more calories they will burn in a day.”
Metabolism rates vary in animals the same way they do in people. Metabolism is the body process in which food is broken down for energy; another factor that affects the amount of food a pet needs. Wagner advises owners to keep an eye on body condition to judge whether a pet is eating properly. “If your pet shows signs of being overweight, simply cut back the amount of food given at each meal. Then weigh the pet in two or three weeks to see if it has made a difference,” she says.
Choosing the right food for your pet is important as well. Different brands of pet food contain varying amounts of protein, fat, carbohydrates and calories. “As a general rule, young, active dogs need high protein food,” says Wagner. “Older dogs need higher fiber to keep the gastrointestinal (GI) tract moving.” Ingredients listed on the package appear in descending order of volume; the first item on the list is most abundant in the food.
Most of us love to give treats, but many of us don’t realize how many we offer each day. “A 40-pound dog is one quarter the size of a 160-pound person,” Wagner says. “They have smaller stomachs. Look at calories in everything your pet eats. After that, it’s simple math.”
“Table scraps are a definite no. Zip, zilch, nada,” says Banta. “They are not good for two reasons. First, foods like chocolate, caffeine, grapes and raisins can be toxic to dogs. Second, the high fat content associated with table scraps, especially holiday trimmings, can lead to the onset of acute pancreatitis, which can be fatal.”
He recommends offering a kibble of food or a carrot instead of a cookie. If you must give cookies, try breaking them in half. “Pets do enjoy treats as a reward; however, attention from you is also a reward. It’s important to praise animals. In some ways, spending time with them is better than a treat,” Wagner says.
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On this day in 1951, more than six years after the end of World War II in Europe, President Harry S. Truman signed a proclamation officially ending U.S. hostilities with Germany.
The official end to the war came nine years, 10 months and 13 days after Congress had declared war on Nazi Germany. The lawmakers had responded to a declaration of war issued by the Third Reich in the aftermath of the Dec. 7, 1941, Japanese attack on Pearl Harbor and other U.S. bases in the Pacific.
The president explained why he had waited so long after the fighting had ended to act: It had always been America’s hope, Truman wrote, to create a treaty of peace with the government of a united and free Germany, but the postwar policies pursued by the Soviet Union “made it impossible.”
After the war, the United States, Britain, France and the Soviet Union divided Germany into four zones of occupation. Berlin, while located wholly within the Soviet zone, was jointly occupied by the wartime allies and also subdivided into four sectors because of its symbolic importance as the nation’s historic capital and seat of the former Nazi government.
The three western zones were merged to form the Federal Republic of Germany in May 1949, and the Soviets followed suit in October 1949 with the establishment of the German Democratic Republic.
The East German regime began to falter in May 1989, when the removal of Hungary’s border fences punched a hole in the Iron Curtain, allowing tens of thousands of East Germans to flee to the West. Despite the grants of general sovereignty to both German states in 1955, neither of the two German governments held unrestricted sovereignty under international law until after they were reunified in October 1990.
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Fewer rare sea turtles will die on the swordfish industry's longlines in Hawaii under an agreement between environmental groups and the government. The agreement settles a lawsuit challenging the federal government's plans that would have dramatically increase the number of turtles that could be killed. The Turtle Island Restoration Network, Center for Biological Diversity and KAHEA sued the National Marine Fisheries Service for allowing 46 imperiled Pacific loggerhead turtles to be hooked last year. The new court-ordered settlement caps the number at 17 per year. Meanwhile the National Marine Fisheries Service is weighing whether loggerheads need more protection under the Endangered Species Act.
"It made absolutely no sense to have one arm of the National Marine Fisheries Service increasing the lethal capture of loggerheads, while the other arm is in the process of determining whether loggerheads should be uplisted from threatened to endangered," said Todd Steiner, biologist and executive director of Turtle Island Restoration Network. "With extinction looming, these animals need more protection, not less."
"With this decision, Hawaii's public-trust ocean resources can be better managed for our collective best interest, and not just the interests of this commercial fishery," said KAHEA program director Marti Townsend. "This is a victory not just for the turtles, but for Hawaii's people who rely on a healthy, functioning ocean ecosystem."
Conservation groups represented by Earthjustice filed a federal lawsuit challenging a 2009 rule allowing the swordfish fleet to catch nearly three times as many loggerhead sea turtles as previously permitted. This settlement freezes the number at the previous cap of 17 while the government conducts additional environmental studies and decides whether or not to classify the loggerhead as endangered, rather than its current, less-protective status of threatened. For leatherback turtles, the bycatch limit remains at 16 per year. In 2010, eight Pacific leatherbacks and seven loggerheads were caught in the longline fishery, according to the National Marine Fisheries Service. There have already been 4 loggerheads captured in 2011, which has sea turtle conservationists concerned.
"Sea turtles have been swimming the oceans since the time of dinosaurs. But without a change in management, they won't survive our voracious quest for swordfish and tuna," said Miyoko Sakashita, oceans director at the Center for Biological Diversity. "If loggerheads are going to survive in the North Pacific, we need to stop killing them in our fisheries."
"Pacific loggerhead sea turtles are nearly extinct, so this bycatch rollback helps right a serious wrong," said Teri Shore, program director at Turtle Island Restoration Network. "We can't allow these rare sea turtles to disappear for a plate of swordfish. It's tragic that it took a lawsuit to correct this fishery problem."
Swordfish longline vessels trail up to 60 miles of fishing line suspended in the water with floats, with as many as 1,000 baited hooks deployed at regular intervals. Sea turtles become hooked while trying to take bait or become entangled while swimming through the nearly invisible lines. These encounters can drown the turtles or leave them with serious injuries. Sea birds such as albatross dive for the bait and become hooked; marine mammals, including endangered humpback whales and false killer whales, also sometimes become hooked when they swim through the floating lines.
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How hot is it where you are? Tell your stories at CNN's iReport.
(CNN) -- For many Americans, this summer has been miserably hot.
Heat advisories and warnings have been issued from coast to coast, with high temperatures often reaching into the triple digits, and July went into the record books as the hottest month ever for the continental United States.
But in certain parts of the world, this is the norm -- or maybe even on the cool side.
Try Kuwait City, for instance. In July, its average high temperature is 116 degrees Fahrenheit.
Or Timbuktu in Mali, where the highs average 108 in May and was once recorded at 130. 130! That ranks fifth on the all-time list.
The highest temperature ever recorded on the planet was in 1922, when a thermometer in El Azizia, Libya, hit 136. Some dispute that mark, saying it was improperly measured. If that's true, the record would be the 134, reached nine years earlier in Death Valley, California.
But the world's hottest place might not be any of these, according to a team of scientists from the University of Montana. It says the highest temperatures on Earth are found in areas that don't even have weather stations.
"The Earth's hot deserts -- such as the Sahara, the Gobi, the Sonoran and the Lut -- are climatically harsh and so remote that access for routine measurements and maintenance of a weather station is impractical," said David Mildrexler, lead author of a recent study that used NASA satellites to detect the Earth's hottest surface temperatures.
The satellites detect the infrared energy emitted by land. And over a seven-year period, from 2003 to 2009, they found Iran's Lut Desert to be the hottest place on Earth.
The Lut Desert had the highest recorded surface temperature in five of the seven years, topping out at 159 degrees in 2005. Other notable annual highs came from Queensland, Australia (156 degrees in 2003) and China's Turpan Basin (152 degrees in 2008).
It's important to stress that surface temperatures are naturally higher than the air temperatures measured by weather stations. Air temperatures have to be measured by thermometers placed off the ground and shielded from sunlight, according to global meteorological standards.
But the study shows that today's modern records might not necessarily be the most accurate.
"Most of the places that call themselves the hottest on Earth are not even serious contenders," co-author Steve Running said.
The world's highest recorded air temperatures 1. El Azizia, Libya (136 degrees Fahrenheit) 2. Death Valley, California (134) 3. Ghadames, Libya (131) 3. Kebili, Tunisia (131) 5. Timbuktu, Mali (130) 5. Araouane, Mali (130) 7. Tirat Tsvi, Israel (129) 8. Ahwaz, Iran (128) 8. Agha Jari, Iran (128) 10. Wadi Halfa, Sudan (127)
Highest recorded air temperature (by continent) Africa: El Azizia, Libya (136) North America: Death Valley, California (134) Asia: Tirat Tsvi, Israel (129) Australia: Cloncurry, Queensland (128*) Europe: Seville, Spain (122) South America: Rivadavia, Argentina (120) Antarctica: Vanda Station, Scott Coast (59)
Sources: NOAA, World Meteorological Organization
* This temperature was measured using the techniques available at the time of recording, which are different to the standard techniques currently used in Australia. The most likely Australian record using standard equipment is an observation of 123 degrees, recorded at Oodnadatta, South Australia.
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The Chinook Arch
November 14, 2001
The above photo was taken at evening twilight in Calgary, Alberta by Jeff McIntosh. On the lee (eastern) side of the Rocky Mountains in Colorado, Wyoming, Montana, and the province of Alberta in Canada, chinook winds occasionally bring respite from cold weather. Chinook is an Indian name meaning "snow eater." These warm, westerly winds result from downslope winds - air moving across the Rocky Mountains and down onto the prairies. During those cold, dull gray winter days, Albertans sometimes look toward the mountains for the Chinook Arch, a curved patch of blue sky (as shown above) that indicates that warm winds are approaching. Over this past weekend, a strong chinook was felt in Alberta and Montana. Chinooks typically occur from early November to late March.
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Marion Levine teaches English, Literature and Film Production at Los Angeles Center for Enriched Studies, Los Angeles, CA
Measure for Measure, Act 4 or 5
What's On for Today and Why
Students will choose a character from Measure for Measure and create a "back story" for that character. This will encourage students to read the text closely looking for clues regarding a specific character's history. Students will re-read a portion of the text and then write about what has happened to the character before the play begins. They will then create an artifact, such as a diary or journal entry, written by the charcacter they have selected. This will allow them the opportunity to think like the character and to view the events of the play from a specific point of view.
This lesson will take two 40 minute class periods.
What You Need
Measure for Measure, Folger Edition
What To Do
1. Explain the concept of a "back story" as the important events that occur to a character before the play begins. You may need to prompt students with questions such as:
What was the character like as a child?
In what situation did he/she grow up?
Students will need to show how the script supports their choices.
2. Have the students write a one or two page back story in either the first or third person.
3. Divide students into small groups of 4 or 5 and have them re-read Act 4 or Act 5, combing throught the text for character details.
4. Have students write a letter, diary or journal entry from their selected characters point of view (first person). This artifact should concern one or more characters in the play.
5. For increased authenticity, appropriate for an "Extra-Extended" book, students could write their letter, diary entry using calligraphy, a handwriting font or on a piece of yellowed paper.
6. Allow students time to read their pieces and share their artifacts with the class.
How Did It Go?
Were students able to justify their choices with reference to the text? Did their artifacts accurately portray character traits that can be interpreted from the text? Were students able to convey a sense of the character's perspective through this activity?
This lesson could be applied to any fictional text that the students read in class. Through close reading and attention to a specific character, students are able to identify with, and understand the concerns of a character on a deeper level. Possible choices could include Jay Gatsby, Hester Prynne,and Atticus Finch.
If you used this lesson, we would like to hear how it went and about any adaptations you made to suit the needs of YOUR students.
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Question from Amanda: Where and what acids are found in wine. Which wines have more acid (dry or sweet) and why due to the climate. Explain why and how titration can be used to determine the relative acid content of wine. If you could help answer my question i would be very grateful.
Answer: Hi, Amanda! Thanks for your question! I’ll do my best….
The main grape acid is tartaric, a relatively strong acid, unlike most fruits. It’s followed by malic (found in lots of fruits and vegetables) and there are trace amounts of lots of different acids. We have an article on wine components, including acid, at goosecross.com.
Generally, white wines are higher in acid than reds, for aesthetic reasons. Sweet wines should be the highest of all, to offset the sweetness, or the wine will be cloying.
Cool climates usually produce wines of high acid compared to warm climates because heat causes the sugar to go up and the acid to go down. A Chardonnay from Burgundy, France is almost always higher in acid than a Napa Valley Chardonnay because of the difference in climate. Imagine trying to ripen tomatoes in a cold climate–they will be quite tart!
Titration is a simple color-change test. I’ve paraphrased this from a wine text: Titration is the process of determining the concentration of a substance, such as acid, in a solution by adding a carefully measured standard reagent (usually sodium hydroxide) until a reaction (change in color) occurs due to the presence of an indicator (phenolphthalein). Most home winemakers buy inexpensive kits to do this.
I hope this helps you. Are you studying wine making?
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Westminster Confession of Faith
The Westminster Confession of Faith is perhaps the most notable expression in creedal form of the truths of the Bible. It was the work of that assembly of divines which was called together by Parliament and met in London, at Westminster Abbey, during the years 1643-1648. It was this assembly which also produced the Larger and Shorter Catechisms. The Confession and the Catechisms are used by many churches as their doctrinal standards, subordinate to the Word of God.
The text of the Confession as given in this document is in the form adopted by the Bible Presbyterian Church in 1938, and, except for a few revisions, which are largely concerned with eschatology, as well as with the relation of the civil magistrate to the church, it agrees with the text of the original manuscript of the Confession. A list of changes can be found here, together with the reading of the original.
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Most of us know someone with a food allergy. I certainly do-two of my children have been labeled with life threatening food allergies; one to peanuts and tree nuts and the other to soy. Every time I head to the grocery store I spend a tremendous amount of time reading each and every label-including labels that I am familiar with to be sure they haven’t changed. This is a necessity to keep my family safe and healthy.
In January, 2006, the new Food Allergen Labeling and Consumer Protection Act (FALCPA) took effect. The law requires food manufacturers to identify all ingredients in a food product containing one or more of the eight major allergens.
The eight foods identified by the law are:
- Fish (e.g., bass, flounder, cod)
- Crustacean shellfish (e.g. crab, lobster, shrimp)
- Tree nuts (e.g., almonds, walnuts, pecans)
The law states that the name of the food source of a major food allergen must appear:
- In parentheses following the name of the ingredient.
Examples: “lecithin (soy),” “flour (wheat),” and “whey (milk)”
– OR –
- Immediately after or next to the list of ingredients in a “contains” statement.
Example: “Contains Wheat, Milk, and Soy.”
Most companies are very clear in their labeling and use the “contains” language in bold after their ingredient list.
HERE’S WHERE IT GETS REALLY CONFUSING
I have been scrutinizing food labels for years-I am noticing that I have to squint these days to read the fine print. Many labels contain language about cross-contamination-if the food was processed on shared equipment or shared processing lines with one of the 8 allergens.
But not all manufacturers are listing cross-contamination information. The reason being- companies are not required to include this information. There are no particular regulations on whether they need to add statements such as “may contain traces of peanuts,” for example, for foods that aren’t supposed to contain such allergens. It is a company’s choice whether or not to include this information, and how to word it.
How to decide if cross-contamination is an issue
So the bottom line is YOU will need to determine what degree of risk you are comfortable with when purchasing foods. That is a lot of pressure when you are buying food for someone else.
Here is my internal checklist for deciding whether or not to buy a product:
- I first check the ingredients list for the 8 common allergens.
- If there is no cross-contamination or “may contain” information I then look at the other same brand products on the shelf. If there are other products that have either nuts or soy I will more often than not assume there might be cross-contamination.
- I might contact the manufacturer on occasion to ask specifically about a cross-contamination issue.
Let me know how do you decide which products are safe to purchase?
My Go-To Food Allergy Sites:
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There are many aspects to learning the creation of interactive fiction. Here we mostly undertake to explain approaches to using Inform, and leave the larger questions of craft and design for elsewhere.
The two manuals
There are two interlinked manuals built into every copy of the Inform application: if you've downloaded Inform, you already have them. But they are also available to read or download separately from this website.
Writing with Inform is an overview of the language, beginning with the simplest kinds of construction (such as building a map of rooms, objects, and doors) and working its way up to more advanced tasks. It is meant to be read more or less sequentially, since later chapters build on the ideas in earlier ones; though some of the late chapters (such as those covering numbers, activities, or advanced text) might reasonably be read out of order.
The Recipe Book approaches the problem of authorship from a different perspective. Instead of trying to teach the language from start to finish, it is organized for the author who wants to accomplish something specific, such as asking the player's name at the start of play or implementing a system of measured liquids. It shares the same set of examples that are keyed to Writing with Inform, but organizes them into a new order and accompanies them with text about design problems in creating interactive fiction, rather than explanation of language features.
Following requests from partially sighted Inform users, we've also made two plain vanilla versions of the manual available - they have as little decoration or web design as possible, which means less clutter for screen-reading software to cope with. We offer a choice of:
Minimally tagged HTML provides an archive containing the pages of the manuals and examples as vanilla-flavoured HTML files.
Writing with Inform in plain text format is just what it claims to be - one single file containing only text, with no marking-up of any kind. This contains all of the examples, following the text in numerical order, but not the Recipe Book. (The whole idea of two interleaved manuals can't really be achieved in one flat text file.)
We receive occasional questions about publishing a printed form of the manuals. The answer is that we intend to do exactly that, in due course, but that we expect the current text will be revised wholesale once the system is more mature. (The same thing happened with Inform 6, with the appearance of the printed Designer's Manual in 2001 essentially marking the end of its design cycle.)
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Flickr as a Paintbrush [cartogrammar.com] reveals the recorded colors of our surrounding landscape, both in a physical and cultural sense. In short, Andy Woodruff created a set of geographic heatmaps that represent the average colors of images taken on locations surrounding a specific landmark. In other words, the resulting maps reveal the colors that people on the ground should be looking at.
Technically, these maps are based on the most recent 2,000 photos uploaded to Flickr that were geotagged within a specified bounding box. These were then averaged by hue. As an emergent result, the color red reveals the dominance of brick, while green/yellow colors naturally denote grass and trees. However, some unexpected patterns appear as well, such as blue/purple in the map of Boston.
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Chinese researchers have turned to the light absorbing properties of butterfly wings to significantly increase the efficiency of solar hydrogen cells, using biomimetics to copy the nanostructure that allows for incredible light and heat absorption.
Butterflies are known to use heat from the sun to warm themselves beyond what their bodies can provide, and this new research takes a page from their evolution to improve hydrogen fuel generation. Analyzing the wings of Papilio helenus, the researchers found scales that are described as having:
[...] Ridges running the length of the scale with very small holes on either side that opened up onto an underlying layer. The steep walls of the ridges help funnel light into the holes. The walls absorb longer wavelengths of light while allowing shorter wavelengths to reach a membrane below the scales. Using the images of the scales, the researchers created computer models to confirm this filtering effect. The nano-hole arrays change from wave guides for short wavelengths to barriers and absorbers for longer wavelengths, which act just like a high-pass filtering layer.
So, what does this have to do with fuel cells? Splitting water into hydrogen and oxygen takes energy, and is a drain on the amount you can get out of a cell. To split the water, the process uses a catalyst, and certain catalysts — say, titanium dioxide — function by exposure to light. The researchers synthesized a titanium dioxide catalyst using the pattern from the butterfly's wings, and paired it with platinum nanoparticles to make it more efficient at splitting water. The result? A 230% uptick in the amount of hydrogen produced. The structure of the butterfly's wing means that it's better at absorbing light — so who knows, you might also see the same technique on solar panels, too.
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There's this kid who gets bullied a lot by everyone. What should I do?
Hooray for the person who sent this question in to us! There are a lot more kids who witness bullying than there are victims of bullying. Often, people who see something happen are called bystanders. Wouldn't it be excellent if those bystanders would do something to help someone who's being bullied?
But how exactly do you find your courage and do it?
First, be sure to let an adult know what's going on. If it's happening at school, have a talk with a teacher or school counselor about it. If it happens at camp, the camp counselor is the one to talk to. Approach the adult and say you need to talk. Explain what's been going on the best you can. Give details. The adult can take steps to stop the bullying.
Plus, once they know about bullying, adults can do things to help the kid who's been bullied feel better and stronger. Adults can also help the kid who bullies learn to treat others with respect, friendship, and kindness.
After talking to an adult, here are some other things you can do. Be friendly to the kid who gets bullied. For example, say "hi" at the lockers or bus line, include that kid at your lunch table, or invite the kid to play at recess or to be in your group for a project. This helps for two reasons:
Any kid who gets bullied is likely to feel left out and alone. Your friendship helps that kid feel included and welcome.
Friendship also helps prevent bullying because bullies are less likely to pick on kids when they are with friends.
And when you see the bully acting mean, you can say, "Hey, knock it off, that's not cool," and invite the kid who's being picked on to walk away with you. You can just say, "C'mon, let's go." This can work even better if you get a couple of your friends to join you in standing up for the kid. Tell your friends ahead of time: "I'm going to stick up for that kid. Will you do it with me?"
Be sure to update the adult about what's going on until the problem is solved. This is also a very good thing to talk to parents about. Your parent will want to know about all this and can give you more advice and support. Plus, your mom or dad will be proud that you're the kind of kid who cares and who stands up for others and for what's right!
Bullying makes kids feel terrible — and not just the kid who's being bullied. Just seeing someone else be bullied makes others feel bad. That's because meanness affects everyone in the environment. It's like meanness pollution, so let's all fight it!
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You Baby's Development
After many weeks of anticipation and preparation, your baby is here! Or maybe not — only 5% of women deliver on their estimated due dates, and many first-time mothers find themselves waiting up to 2 weeks after their due date for their baby to arrive.
A baby born at 40 weeks weighs, on average, about 7 pounds, 4 ounces (3,300 grams) and measures about 20 inches (51 cm). Don't expect your baby to look like the Gerber baby right off the bat — newborns often have heads temporarily misshapen from the birth canal and may be covered with vernix and blood. Your baby's skin may have skin discolorations, dry patches, and rashes — these many variations are completely normal.
Because of the presence of your hormones in your baby's system, your baby's genitals (scrotum in boys and labia in girls) may appear enlarged. Your baby, whether a boy or a girl, may even secrete milk from the tiny nipples. This should disappear in a few days and is completely normal.
Right after birth, your health care provider will suction mucus out of your baby's mouth and nose, and you'll hear that long-awaited first cry. Your baby may then be placed on your stomach, and the umbilical cord will be cut — often by the baby's dad, if he chooses to do the honors! A series of quick screening tests, such as the Apgar score, will be performed to assess your baby's responsiveness and vital signs, and he or she will be weighed and measured. If your pregnancy was high risk, or if a cesarean section was necessary, a neonatologist (a doctor who specializes in newborn intensive care) will be present at your delivery to take care of your baby right away. If your baby needs any special care to adjust to life outside the womb, it will be given — and then your newborn will be placed in your waiting arms.
This week you'll experience the moment you've been anticipating — your introduction to your baby! Before you can meet your baby, though, you have to go through labor and delivery. You may have learned about the three stages of birth in your prenatal classes. The first stage of labor works to thin and stretch your cervix by contracting your uterus at regular intervals. The second stage of labor is when you push your baby into the vaginal canal and out of your body. The third and final stage of labor is when you deliver the placenta.
If you don't go into labor within a week of your due date, your health care provider may recommend you receive a nonstress test, which monitors fetal heart rate and movement to be sure that the baby is receiving adequate oxygen and that the nervous system is responding. Talk to your health care provider to find out more about this test.
Sometimes mother nature may need a little coaxing. If your labor isn't progressing, or if your health or your baby's health requires it, your health care provider may induce labor by artificially rupturing the membranes or by administering the hormone oxytocin or other medications. If your pregnancy is high risk, or if there are any other potential complications, you may require a cesarean section delivery.
Some women know ahead of time that they will be delivering via cesarean section and are able to schedule their baby's "birth day" well in advance. If you're one of them, you've probably been able to prepare yourself emotionally and mentally for the birth — which can help to lessen the feelings of disappointment that many mothers who are unable to deliver vaginally experience. But even if you have to undergo a cesarean section that wasn't planned, rest assured that you'll still be able to bond with your baby. It might not be the birth experience you imagined, but your beautiful newborn has arrived nonetheless. The months of waiting are over!
Good luck with your baby!
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What Is It?
Fertility awareness is a way to prevent pregnancy by not having sex around the time of ovulation (the release of an egg during a girl's monthly cycle). Couples who do want to have a baby can also use this method to have sex during the time that they are most likely to conceive. Fertility awareness can include methods such as natural family planning, periodic abstinence, and the rhythm method.
How Does It Work?
If a couple doesn't have sex around the time of ovulation, the girl is less likely to get pregnant. The trick is knowing when ovulation happens. Couples use a calendar, a thermometer to measure body temperature, the thickness of cervical mucus, or a kit that tests for ovulation. The ovulation kits are more useful for couples who are trying to get pregnant. The fertile period around ovulation lasts 6 to 9 days and during this time the couple using only fertility awareness for birth control who does not want to get pregnant should not have sex.
How Well Does It Work?
Fertility awareness is not a reliable way to prevent pregnancy for most teens. Over the course of 1 year, as many as 25 out of 100 typical couples who rely on fertility awareness to prevent pregnancy will have an accidental pregnancy. Of course, this is an average figure, and the chance of getting pregnant depends on whether a couple uses one or more of the fertility awareness methods correctly and consistently and does not have unprotected sex during the fertile period.
In general, how well each type of birth control method works depends on a lot of things. These include whether a person has any health conditions, is taking any medications that might interfere with its use, whether the method chosen is convenient — and whether it is used correctly all the time. In the case of fertility awareness, it also depends on how consistent a woman's ovulatory cycle is, how accurately a couple keeps track of when she could be ovulating, and how reliably unprotected sex is avoided during the fertile period.
Protection Against STDs
Abstinence (not having sex) is the only method that always prevents pregnancy and STDs.
Who Uses It?
Fertility awareness is not a reliable way to prevent pregnancy for most teens. It is often very difficult to tell when a girl is fertile. Because teens often have irregular menstrual cycles, it makes predicting ovulation much more difficult. Even people who have previously had regular cycles can have irregular timing of ovulation when factors such as stress or illness are involved. Fertility awareness also requires a commitment to monitoring body changes, keeping daily records, and above all not having sex during the fertile period.
How Do You Get It?
For couples interested in this method, it is best to talk to a doctor or counselor who is trained in fertility awareness. He or she can then teach the couple the skills they need to know to practice this birth control method accurately.
How Much Does It Cost?
The tools needed for fertility awareness — such as ovulation detection kits and thermometers, for example — are available in drugstores. But they can be expensive. Again, it's best to talk to a doctor for advice on using this method.
Reviewed by: Larissa Hirsch, MD
Date reviewed: April 2010
Share this page using:
Note: All information on TeensHealth® is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
© 1995- The Nemours Foundation. All rights reserved.
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Even though the CNC machines require little human intervention in the development process of the end desired product, human intervention is still needed when it comes to the computer software programming for the CNC machines. A CNC machine programmer must understand the programming, so that they are capable of accurately telling the machine what to do.
CNC machines a programmed through a sentence like structure that is written in a code that it understands. Each axes that the machine uses, requires instructions for the development of the final project. If you forget to program one of the axes, the product will not turn out; in the same terms, if you program wrong, the axes will do what the program tells them and not what you want them to do.
A CNC machine operator helps on the other end. The programmer writes the code for the machine, but the operator is responsible for downloading the program into the machine and getting the machine set up to properly do the job.
The operator may have to set up the tools in the tool holder for the machine, position the material that is needed for the job in the machine, and then start the machine. If the CNC machine operator is experienced, they will begin to learn the different sounds that the machine makes and will be able to tell just by the sound whether there is a problem with the machine. A more experienced CNC machine operator is required to do this type of work.
Once the machine completes the program and the work progress is done, operators may be switched. At this point in time, a less experienced operator can take over from here. Usually CNC machine operators will start out at the lower level and gradually work their way up as they become more experienced in this type of machining.
Experienced CNC machine operators can detect program flaws and can usually make the modifications to the program themselves. If they notice that the end product is not to the specifications needed, they can fix the problem in the program and continue on with the job. They will not have to take the time to contact the programmer and wait for the program to be fixed.
Limited input from the operator is needed to operate a CNC machine. It is because of this reason that one operator may be able to watch multiple machines. The machines do all of the work and only one person is required to do the set up of the machines. This enables companies to employ fewer people and saves them in the payroll department.
CNC machine operators must adhere to safety precautions just like they would in any other machine shop. Even though the CNC machines are usually completely enclosed and can limit the noise, debris and so on, there are still dangers and the operator will need to abide by the safety rules and precautions. Wearing safety goggles/glasses and ear plugs are a good idea and can help to protect the operator.
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A nuzzle of the neck, a stroke of the wrist, a brush of the knee—these caresses often signal a loving touch, but can also feel highly aversive, depending on who is delivering the touch, and to whom. Interested in how the brain makes connections between touch and emotion, neuroscientists at the California Institute of Technology (Caltech) have discovered that the association begins in the brain’s primary somatosensory cortex, a region that, until now, was thought only to respond to basic touch, not to its emotional quality.
“We demonstrated for the first time that the primary somatosensory cortex—the brain region encoding basic touch properties such as how rough or smooth an object is—also is sensitive to the social meaning of a touch,” explains Michael Spezio, a visiting associate at Caltech who is also an assistant professor of psychology at Scripps College in Claremont, California. “It was generally thought that there are separate brain pathways for how we process the physical aspects of touch on the skin and for how we interpret that touch emotionally—that is, whether we feel it as pleasant, unpleasant, desired, or repulsive. Our study shows that, to the contrary, emotion is involved at the primary stages of social touch.”
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Schools and Students
Private schools in 1999–2000 were located primarily in central cities (42 percent) and the urban fringe or large towns (40 percent) (table 2). About 18 percent of private schools were found in rural areas. In contrast, 24 percent of all public schools were in central city locations, 45 percent in the urban fringe or large towns, and 31 percent in rural areas. Most schools—61 percent of private and 71 percent of public—were elementary, but 10 percent of private schools and 25 percent of public schools were secondary. Finally, a much higher proportion of private schools (30 percent) were combined schools (usually grades K–12 or 1–12), compared with only 4 percent of public schools.
Figures and Tables
Table 2: Percentage distribution of schools according to community type and level, by sector and private school type: 1999-2000
Table S2: Standard errors for the percentage distribution of schools according to community type and level, by sector and private school type: 1999-2000
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Jim Lake and Maria Rivera, at the University of California-Los Angeles (UCLA), report their finding in the Sept. 9 issue of the journal Nature.
Scientists refer to both bacteria and Archaea as "prokaryotes"--a cell type that has no distinct nucleus to contain the genetic material, DNA, and few other specialized components. More-complex cells, known as "eukaryotes," contain a well-defined nucleus as well as compartmentalized "organelles" that carry out metabolism and transport molecules throughout the cell. Yeast cells are some of the most-primitive eukaryotes, whereas the highly specialized cells of human beings and other mammals are among the most complex.
"A major unsolved question in biology has been where eukaryotes came from, where we came from," Lake said. "The answer is that we have two parents, and we now know who those parents were."
Further, he added, the results provide a new picture of evolutionary pathways. "At least 2 billion years ago, ancestors of these two diverse prokaryotic groups fused their genomes to form the first eukaryote, and in the processes two different branches of the tree of life were fused to form the ring of life," Lake said.
The work is part of an effort supported by the National Science Foundation--the federal agency that supports research and education across all disciplines of science and engineering--to re-examine historical schemes for classifying Earth's living creatures, a process that was once based on easily observable traits. Microbes, plants or animals wer
Contact: Leslie Fink
National Science Foundation
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The test team views the use of a pulley as an intermediate step only, and has planned to shift to a reliance on windlasses like those that apparently were used to hoist sails on Egyptian ships.
"The whole approach has been to downgrade the technology," Gharib said. "We first wanted to show that a kite could raise a huge weight at all. Now that we're raising larger and larger stones, we're also preparing to replace the steel scaffolding with wooden poles and the steel pulleys with wooden pulleys like the ones they may have used on Egyptian ships."
For Gharib, the idea of accomplishing heavy tasks with limited manpower is appealing from an engineer's standpoint because it makes more logistical sense.
"You can imagine how hard it is to coordinate the activities of hundreds if not thousands of laborers to accomplish an intricate task," said Gharib. "It's one thing to send thousands of soldiers to attack another army on a battlefield. But an engineering project requires everything to be put precisely into place.
"I prefer to think of the technology as simple, with relatively few people involved," he explained.
Gharib and Graff came up with a way of building a simple structure around the obelisk, with a pulley system mounted in front of the stone. That way, the base of the obelisk would drag on the ground for a few feet as the kite lifted the stone, and the stone would be quite stable once it was pulled upright into a vertical position. If the obelisk were raised with the base as a pivot, the stone would tend to swing past the vertical position and fall the other way.
The top of the obelisk is tied with ropes threaded through the pulleys and attached to the kite. The operation is guided by a couple of workers using ropes attached to the pulleys.
No one has found any evidence that the ancient Egyptians moved stones or any other objects with kites and pulleys. But Clemmons has found some tantalizing hints that the project is on the right track. On a building frieze in a Cairo museum, there is a wing pattern in bas-relief that does not resemble any living bird. Directly below are several men standing near vertical objects that could be ropes.
Gharib's interest in the project is mainly to demonstrate that the technique may be viable.
"We're not Egyptologists," he said. "We're mainly interested in determining whether there is a possibility that the Egyptians were aware of wind power, and whether they used it to make their lives better."
Now that Gharib and his team have successfully raised the four-ton concrete obelisk, they plan to further test the approach using a ten-ton stone, and perhaps an even heavier one after that. Eventually they hope to obtain permission to try using their technique to raise one of the obelisks that still lie in an Egyptian quarry.
"In fact, we may not even need a kite. It could be we can get along with just a drag chute," Gharib said.
An important question is: Was there enough wind in Egypt for a kite or a drag chute to fly? Probably so, as steady winds of up to 30 miles per hour are not unusual in the areas where pyramids and obelisks were found.
(c) 2001 Caltech
SOURCES AND RELATED WEB SITES
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Refraction and Acceleration
Name: Christopher S.
Why is it that when light travels from a more dense to a
less dense medium, its speed is higher? I've read answers to this
question in your archives but, sadly, still don't get it. One answer
(Jasjeet S Bagla) says that we must not ask the question because light is
massless, hence questions of acceleration don't make sense. It does,
however, seem to be OK to talk about different speeds of light. If you
start at one speed and end at a higher one, why is one not allowed to
talk about acceleration? Bagla goes on to say that it depends on how the
em fields behave in a given medium. It begs the question: what is it
about, say, Perspex and air that makes light accelerate, oops, travel at
different speeds? If you're dealing with the same ray of light, one is
forced to speak of acceleration, no? What other explanation is there for
final velocity>initial velocity? Arthur Smith mentioned a very small
"evanescent" component that travels ahead at c. Where can I learn more
about this? Sorry for the long question. I understand that F=ma and if
there is no m, you cannot talk about a, but, again, you have one velocity
higher than another for the same thing. I need to know more than "that's
just the way em fields are!"
An explanation that satisfies me relates to travel through an interactive
medium. When light interacts with an atom, the photon of light is absorbed
and then emitted. For a moment, the energy of the light is within the atom.
This causes a slight delay. Light travels at the standard speed of light
until interacting with another atom. It is absorbed and emitted, causing
another slight delay. The average effect is taking more time to travel a
meter through glass than through air. This works like a slower speed. An
individual photon does not actually slow down. It gets delayed repeatedly by
the atoms of the medium. A more dense medium has more atoms per meter to
Dr. Ken Mellendorf
Illinois Central College
Congratulations! on not being willing to accept "that is just the way em
fields are!" The answer to your inquiry is not all that simple (my opinion),
but I won't try to do so in the limited space allowed here, not to say my
own limitations of knowledge.
Like so many "simple" physics questions, I find the most lucid, but
accurate, explanation in
Richard Feynman's, "Lectures on Physics" which most libraries will have.
Volume I, Chapter 31-1 through 31-6, which describes refraction, dispersion,
diffraction. The "answer" has to do with how matter alters the electric
field of incident radiation, but I won't pretend to be able to do a better
job than Feynman.
The answer is that you are not dealing with the same ray of light. In
vacuum a photon just keeps going at the speed of light. In a medium,
however, it interacts with the atoms, often being absorbed while bumping
an atomic or molecular motion into a higher energy state. The excited
atom/molecule then can jump to a lower energy state, emitting a photon
while doing so. This can obviously make light appear to travel slower in a
In detail, it is a very complicated question, requiring at least a
graduate course in electromagnetism to begin to understand. Why, for
example do the emitted photons tend to travel in the same direction?
Best, Richard J. Plano
Click here to return to the Physics Archives
Update: June 2012
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Giant Manta Ray
Giant Manta Ray Manta birostris
Divers often describe the experience of swimming beneath a manta ray as like being overtaken by a huge flying saucer. This ray is the biggest in the world, but like the biggest shark, the whale shark, it is a harmless consumer of plankton.
When feeding, it swims along with its cavernous mouth wide open, beating its huge triangular wings slowly up and down. On either side of the mouth, which is at the front of the head, there are two long paddles, called cephalic lobes. These lobes help funnel plankton into the mouth. A stingerless whiplike tail trails behind.
Giant manta rays tend to be found over high points like seamounts where currents bring plankton up to them. Small fish called remoras often travel attached to these giants, feeding on food scraps along the way. Giant mantas are ovoviviparous, so the eggs develop and hatch inside the mother. These rays can leap high out of the water, to escape predators, clean their skin of parasites or communicate.
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Municipal bonds, often called munis, are debt obligations of U.S. states, cities, counties, or other political subdivisions of states. The two primary types of municipal bonds are general obligation and revenue. • A general obligation bond is used for general expenditures and is backed by the issuer’s full faith and credit (taxing and borrowing power). • A revenue bond is used to finance a specific public service project and is backed by the cash flow from that project. Examples are bonds to finance bridges, turnpikes, tunnels, water and sewer systems, schools, power plants, prisons, transportation systems, hospitals, sports complexes, and airports.
This guide is not intended to provide investment advice, and you should not rely on statements in this guide when making investment decisions.
Note: To return to the previous page, close this browser window.
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We had a running joke in science ed that kids get so overexposed to discrepant events involving density and air pressure that they tend to try to explain anything and everything they don't understand with respect to science in terms of those two concepts. Why do we have seasons? Ummm... air pressure? Why did Dr. Smith use that particular research design? Ummm... density?
I think we need another catch-all explanation. I suggest index of refraction.
To simplify greatly, index of refraction describes the amount of bending a light ray will undergo as it passes from one medium to another (it's also related to the velocity of light in both media, but I do want to keep this simple). If the two media have significantly different indices, light passing from one to the other at an angle (not perpendicularly, in which case there is no bending) will be bent more than if indices of the two are similar. The first four data points are from Hyperphysics, the final one from Wikipedia... glass has a wide range of compositions and thus indices of refraction.
Water at 20 C: 1.33
Typical soda-lime glass: close to 1.5
Since glycerine and glass have similar IoR, light passing from one to the other isn't bent; as long as both are transparent and similarly colored, each will be effectively "invisible" against the other.
So, why does it rain? Umm... index of refraction?
A Bright Moon Impact
12 hours ago
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From Oxford University Press:
There is a broad consensus among scholars that the idea of human rights was a product of the Enlightenment but that a self-conscious and broad-based human rights movement focused on international law only began after World War II. In this narrative, the nineteenth century's absence is conspicuous--few have considered that era seriously, much less written books on it. But as Jenny Martinez shows in this novel interpretation of the roots of human rights law, the foundation of the movement that we know today was a product of one of the nineteenth century's central moral causes: the movement to ban the international slave trade. Originating in England in the late eighteenth century, abolitionism achieved remarkable success over the course of the nineteenth century. Martinez focuses in particular on the international admiralty courts, which tried the crews of captured slave ships. The courts, which were based in the Caribbean, West Africa, Cape Town, and Brazil, helped free at least 80,000 Africans from captured slavers between 1807 and 1871. Here then, buried in the dusty archives of admiralty courts, ships' logs, and the British foreign office, are the foundations of contemporary human rights law: international courts targeting states and non-state transnational actors while working on behalf the world's most persecuted peoples--captured West Africans bound for the slave plantations of the Americas. Fueled by a powerful thesis and novel evidence, Martinez's work will reshape the fields of human rights history and international human rights law.
- Forces us to fundamentally rethink the origins of human rights activism
- Filled with fascinating stories of captured slave ship crews brought to trial across the Atlantic world in the nineteenth century
- Shows how the prosecution of the international slave trade was crucial to the development of modern international law
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Outside of the academic environment, a harsh and seemingly ever-growing debate has appeared, concerning how mass media distorts the political agenda. Few would argue with the notion that the institutions of the mass media are important to contemporary politics. In the transition to liberal democratic politics in the Soviet Union and Eastern Europe the media was a key battleground. In the West, elections increasingly focus around television, with the emphasis on spin and marketing. Democratic politics places emphasis on the mass media as a site for democratic demand and the formation of “public opinion”. The media are seen to empower citizens, and subject government to restraint and redress. Yet the media are not just neutral observers but are political actors themselves. The interaction of mass communication and political actors — politicians, interest groups, strategists, and others who play important roles — in the political process is apparent. Under this framework, the American political arena can be characterized as a dynamic environment in which communication, particularly journalism in all its forms, substantially influences and is influenced by it.
According to the theory of democracy, people rule. The pluralism of different political parties provides the people with “alternatives,” and if and when one party loses their confidence, they can support another. The democratic principle of “government of the people, by the people, and for the people” would be nice if it were all so simple. But in a medium-to-large modern state things are not quite like that. Today, several elements contribute to the shaping of the public’s political discourse, including the goals and success of public relations and advertising strategies used by politically engaged individuals and the rising influence of new media technologies such as the Internet.
A naive assumption of liberal democracy is that citizens have adequate knowledge of political events. But how do citizens acquire the information and knowledge necessary for them to use their votes other than by blind guesswork? They cannot possibly witness everything that is happening on the national scene, still less at the level of world events. The vast majority are not students of politics. They don’t really know what is happening, and even if they did they would need guidance as to how to interpret what they knew. Since the early twentieth century this has been fulfilled through the mass media. Few today in United States can say that they do not have access to at least one form of the mass media, yet political knowledge is remarkably low. Although political information is available through the proliferation of mass media, different critics support that events are shaped and packaged, frames are constructed by politicians and news casters, and ownership influences between political actors and the media provide important short hand cues to how to interpret and understand the news.
One must not forget another interesting fact about the media. Their political influence extends far beyond newspaper reports and articles of a direct political nature, or television programs connected with current affairs that bear upon politics. In a much more subtle way, they can influence people’s thought patterns by other means, like “goodwill” stories, pages dealing with entertainment and popular culture, movies, TV “soaps”, “educational” programs. All these types of information form human values, concepts of good and evil, right and wrong, sense and nonsense, what is “fashionable” and “unfashionable,” and what is “acceptable” and “unacceptable”. These human value systems, in turn, shape people’s attitude to political issues, influence how they vote and therefore determine who holds political power.
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May 16, 2011
If you fuel your truck with biodiesel made from palm oil grown on a patch of cleared rainforest, you could be putting into the atmosphere 10 times more greenhouse gasses than if you’d used conventional fossil fuels. It’s a scenario so ugly that, in its worst case, it makes even diesel created from coal (the “coal to liquids” fuel dreaded by climate campaigners the world over) look “green.”
The biggest factor determining whether or not a biofuel ultimately leads to more greenhouse-gas emissions than conventional fossil fuels is the type of land used to grow it, says a new study from researchers at MIT. The carbon released when you clear a patch of rainforest is the reason that palm oil grown on that patch of land leads to 55 times the greenhouse-gas emissions of palm oil grown on land that had already been cleared or was not located in a rainforest, said the study’s lead author.
The solution to this biofuels dilemma is more research. Unlike solar and wind, it’s truly an area in which the world is desperate for scientific breakthroughs, such as biofuels from algae or salt-tolerant salicornia.
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File compression is to perform some algorithm on the file that reduces it in size but the reverse of the algorithm will return it to its original form. In data files, the compression and decompression must be lossless which means that the data must be returned to its exact form. There are various methods to do this: some hardware implementations and some software. The most popular ones that are implemented in hardware usually use a Limpel-Ziv algorithm to look for repeating sequences over a set span of data (the run) and replace that with special identifying information. Compression does save space but may take extra time (latency).
Video and music data are typically already compressed. The compression rates are usually very high because of the data and the fact that a lossy compression algorithm is used. It can be lossy (meaning that all bits may not be decompressed exactly) because it won't be noticeable with video or music.
Zip files are the result of software compression. Another compression round on already compressed data will probably not yield any substantial gain.
Evaluator Group, Inc.
Editor's note: Do you agree with this expert's response? If you have more to share, post it in our Storage Networking forum at http://searchstorage.discussions.techtarget.com/WebX?50@@.ee83ce4 or e-mail us directly at firstname.lastname@example.org.
This was first published in December 2001
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- Exam wrappers. As David Thompson describes the process, "exam wrappers required students to reflect on their performance before and after seeing their graded tests." The first four questions, completed just prior to receiving their graded test, asked students to report the time they spent preparing for the test, their methods of preparation, and their predicted test grade. After reviewing their graded test, students completed the final three reflection questions, including a categorization of test mistakes and a list of changes to implement in preparation for the next test. Thompson then collected and made copies of the wrappers returned them to the students several days later, reminding them to consider what they planned to do differently or the same in preparation for the upcoming test. Thompson reports that each reflection exercise required only 8-10 minutes of class time. Clara Hardy and others also describes uses exam wrappers.
- Reading Reflections. As Karl Wirth writes, reading reflections, effectively outlined by David Bressoud (2008), are designed to address some of the challenges students face with college-level reading assignments. Students submit online reading reflections (e.g., using Moodle or Blackboard) after completing each reading assignment and before coming to class. In each reflection, students summarize the important concepts of the reading and describe what was interesting, surprising, or confusing to them. The reading reflections not only encourage students to read regularly before class, but they also promote content mastery and foster student development of monitoring, self-evaluation, and reflection skills. For the instructor, reading reflections facilitate "just-in-time" teaching and provide invaluable insights into student thinking and learning. According to Wirth, expert readers are skilled at using a wide range of strategies during all phases of reading (e.g., setting goals for learning, monitoring comprehension during reading, checking comprehension, and self-reflection), but most college instruction simply assumes the mastery of such metacognitive skills.
- Knowledge surveys. Many members of the group were influenced by Karl Wirth's work on "knowledge surveys" as a central strategy for helping students think about their thinking. Knowledge surveys involve simple self-reports from students about their knowledge of course concepts and content. In knowledge surveys, students are presented with different facets of course content and are asked to indicate whether they know the answer, know some of the answer, or don't know the answer. Faculty can use these reports to gauge how confident students feel in their understanding of course material at the beginning or end of a course, before exams or papers, or even as graduating seniors or alumni.
Kristin Bonnie's report relates how her students completed a short knowledge survey (6-12 questions) online (via Google forms) on the material covered in class that week. Rather than providing the answer to each question, students indicated their confidence in their ability to answer the question correctly (I know; I think I know; I don't know). Students received a small amount of credit for completing the knowledge survey. She used the information to review material that students seemed to struggle with. In addition, a subset of these questions appeared on their exam – the knowledge survey therefore served as a review sheet.Wirth notes that the surveys need not take much class time and can be administered via paper or the web. The surveys can be significant for clarifying course objectives, structure, and design. For students, knowledge surveys achieve several purposes: they help make clear course objectives and expectations, are useful as study guides, can serve as a formative assessment tool, and, perhaps most critically, aid in their development of self-assessment and metacognitive skills. For instructors, the surveys help them assess learning gains, instructional practices, and course design.
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In my next few blogs, I will provide an overview of Voltage Source Converter (VSC) HVDC technology and its suitability for Smart Grids operation and control discussed.
VSC HVDC is based upon transistor technology and was developed in the 1990′s. The switching element is the Insulated Gate Bipolar Thyristor (IGBT), which can be switched on and off by applying a suitable voltage to the gate (steering electrode). Because of the more switching operations, and the nature of the semiconductor devices itself, the converter losses are generally higher than those of HVDC classic converters.
VSC HVDC is commonly used with underground or submarine cables with a transfer capacity in the range of 10 – 1000 MW, and is suitable to serve as a connection to a wind farm or supply a remote load. VSC HVDC technology has very fast steer and control functionality and is suitable for meshed networks. It is characterised by compactness of the converter stations, due to the reduced need for AC harmonic filters and reactive power compensation. Power flow reversal in VSC systems is achieved by reversal of the current, whereas in HVDC classic systems the voltage polarity has to change. An important consequence of this voltage source behavior is the ability to use cheaper and easier to install XLPE cables, instead of the mass-impregnated cables that are needed for HVDC classic.
Currently, only twelve VSC HVDC projects are in service. A few examples include: Estlink, which connects Estonia to Finland (350 MW), and BorWin1, connecting an offshore wind farm to Northern Germany (400 MW). Both are equipped with ±150 kV submarine cables, and the Trans Bay project in California (400 MW) that consists of 90 km ±200 kV submarine cable.
Most projects have submarine cable, but some projects include long lengths of underground cable, such as Murraylink (220 MW, 177 km underground cable), and Nord E.On 1 (400 MW, 75km underground cable).
The 500 MW East-West interconnector between Ireland and Great Britain, operating at ±200 kV, is scheduled to go into service in 2012. A 2000 MW 65 km cable interconnector ±320kV as part of the Trans European Network—between Spain and France—is scheduled for commissioning in 2013, and will represent the highest power rating for a VSC HVDC system installed at this time.
Make sure to check back next Tuesday for my next blog on the comparison between HVDC classic and VSC HVDC.
By: Peter Vaessen
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Mercury in the Morning
The planet Mercury -- the planet closest to the Sun -- is just peeking into view in the east at dawn the next few days. It looks like a fairly bright star. It's so low in the sky, though, that you need a clear horizon to spot it, and binoculars wouldn't hurt.
Mercury is a bit of a puzzle. It has a big core that's made mainly of iron, so it's quite dense. Because Mercury is so small, the core long ago should've cooled enough to form a solid ball. Yet the planet generates a weak magnetic field, hinting that the core is still at least partially molten.
The solution to this puzzle may involve an iron "snow" deep within the core.
The iron in the core is probably mixed with sulfur, which has a lower melting temperature than iron. Recent models suggest that the sulfur may have kept the outer part of the core from solidifying -- it's still a hot, thick liquid.
As this mixture cools, though, the iron "freezes" before the sulfur does. Small bits of solid iron fall toward the center of the planet. This creates convection currents -- like a pot of boiling water. The motion is enough to create a "dynamo" effect. Like a generator, it produces electrical currents, which in turn create a magnetic field around the planet.
Observations earlier this year by the Messenger spacecraft seem to support that idea. But Messenger will provide much better readings of what's going on inside Mercury when it enters orbit around the planet in 2011.
Script by Damond Benningfield, Copyright 2008
For more skywatching tips, astronomy news, and much more, read StarDate magazine.
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The Neighbor Squirrel
These busy fluffballs have lost their fear of most predators - and they help plant pecan trees.
By Sheryl Smith-Rodgers
Have you ever watched an eastern fox squirrel (Sciurus niger) bury an acorn or pecan? A nuzzle here, another there, then he hurriedly pushes the leaves and grass over the site before scampering up the closest tree. Minutes later, he's back with another nut. Over the course of three months, that industrious squirrel can bury several thousand pecans. Come winter, when food's scarce, he'll find them again with his excellent sense of smell. Some will escape his appetite, though, and sprout into saplings, which is how many native nut trees get planted.
Eastern fox squirrels - the state's most common and wide-ranging squirrel and a popular game animal, too - occur in forests and riparian habitats. They also easily adapt to cities and neighborhoods, where they've lost most of their fear of natural predators.
"Playing the call of a red-tailed hawk didn't phase squirrels on campus," reports Bob McCleery, a wildlife lecturer at Texas A&M University, who has studied urban squirrels in College Station. "When we played a coyote call in the Navasota river bottom, a squirrel immediately flattened itself in the crotch of a tree for a good five minutes."
When agitated, fox squirrels - whose fur closely resembles that of a gray fox - bark and jerk their long, bushy tails, which they use for balance when scampering on utility lines and other high places. Tails provide warmth and protection, too. "In the summer, I've seen them lying down with their tails over their heads to block the sun," McCleery says.
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Welcome to Jane Addams Hull-House museum
The Jane Addams Hull-House Museum serves as a dynamic memorial to social reformer Jane Addams, the first American woman to receive the Nobel Peace Prize, and her colleagues whose work changed the lives of their immigrant neighbors as well as national and international public policy. The Museum preserves and develops the original Hull-House site for the interpretation and continuation of the historic settlement house vision, linking research, education, and social engagement
The Museum is located in two of the original settlement house buildings- the Hull Home, a National Historic Landmark, and the Residents' Dining Hall, a beautiful Arts and Crafts building that has welcomed some of the world's most important thinkers, artists and activists.
The Museum and its many vibrant programs make connections between the work of Hull-House residents and important contemporary social issues.
Founded in 1889 as a social settlement, Hull-House played a vital role in redefining American democracy in the modern age. Addams and the residents of Hull-House helped pass critical legislation and influenced public policy on public health and education, free speech, fair labor practices, immigrants’ rights, recreation and public space, arts, and philanthropy. Hull-House has long been a center of Chicago’s political and cultural life, establishing Chicago’s first public playground and public art gallery, helping to desegregate the Chicago Public Schools, and influencing philanthropy and culture.
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By JOHN CARTER
When Abraham Lincoln died from an assassin’s bullet on April 15, 1865, Edwin Stanton remarked to those gathered around his bedside, “Now he belongs to the ages.”
One of the meanings implied in Stanton’s famous statement is that Lincoln would not only be remembered as an iconic figure of the past, but that his spirit would also play a significant role in ages to come.
The Oscar-nominated movie “Lincoln,” which chronicles the struggle to pass the 13th amendment abolishing slavery, has turned our attention again to Lincoln’s legacy and his relevance amid our nation’s present divisions and growing pains.
Here is some of the wit and wisdom of Abraham Lincoln worth pondering:
“As for being president, I feel like the man who was tarred and feathered and ridden out of town on a rail. To the man who asked him how he liked it, he said, ‘If it wasn’t for the honor of the thing, I’d rather walk.’”
“I desire so to conduct the affairs of this administration that if at the end, when I come to lay down the reins of power, I have lost every other friend on earth, I shall at least have one friend left, and that friend shall be down inside of me.”
“Should my administration prove to be a very wicked one, or what is more probable, a very foolish one, if you the people are true to yourselves and the Constitution, there is but little harm I can do, thank God.”
“Bad promises are better broken than kept.”
“I am not at all concerned that the Lord is on our side in this great struggle, for I know that the Lord is always on the side of the right; but it is my constant anxiety and prayer that I and this nation may be on the Lord’s side.”
“I have never had a feeling, politically, that did not spring from the sentiments embodied in the Declaration of Independence.”
“Those who deny freedom to others deserve it not for themselves; and, under a just God, cannot long retain it.”
“As I would not be a slave, so I would not be a master. This expresses my idea of democracy.”
“The probability that we may fail in the struggle ought not to deter us from the support of a cause we believe to be just.”
“The true rule, in determining to embrace or reject anything, is not whether it have any evil in it, but whether it have more evil than good. There are few things wholly evil or wholly good.”
“Some of our generals complain that I impair discipline and subordination in the army by my pardons and respites, but it makes me rested, after a hard day’s work, if I can find some good excuse for saving a man’s life, and I go to bed happy as I think how joyful the signing of my name will make him (a deserter) and his family.”
“I have been driven many times to my knees by the overwhelming conviction that I had nowhere else to go.”
In addition, Lincoln’s Gettysburg Address and his second inaugural speech are ever relevant. And you may wish to add your own favorites to these.
Paul’s advice to us in Philippians 4:8 is to “fill your minds with those things that are good and deserve praise: things that are true, noble, right, pure, lovely, and honorable.”
As we celebrate his birthday on the 12th, Lincoln’s words more than meet this standard!
John Carter is a Weatherford resident whose column, “Notes From the Journey,” is published weekly in the Weatherford Democrat.
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- weak drug regulatory control and enforcement;
- scarcity and/or erratic supply of basic medicines;
- unregulated markets and distribution chains;
- high drug prices and/or
- significant price differentials.
At national level, governments, law enforcement agencies, heath professionals, the pharmaceutical industry, importers, distributors, and consumer organizations should adopt a shared responsibility in the fight against counterfeit drugs. Cooperation between countries, especially trading partners is very useful for combating counterfeiting. Cooperation should include the timely and appropriate exchange of information and the harmonization of measures to prevent the spread of counterfeit medicines.
The World Health Organization has developed and published guidelines, Guidelines for the development of measures to combat counterfeit medicines. These guidelines provide advice on measures that should be taken by the various stakeholders and interested parties to combat counterfeiting of medicines. Governments and all stakeholders are encouraged to adapt or adopt these guidelines in their fight against counterfeiting of medicines.
- Guidelines for the development of measures to combat counterfeit medicines
- Rapid Alert System for counterfeit medicines
Communication and advocacy - creating public awareness
Patients and consumers are the primary victims of counterfeit medicines. In order to protect them from the harmful effects of counterfeit medicines it is necessary to provide them with appropriate information and education on the consequences of counterfeit medicines.
Patients and consumers expect to get advice from national authorities, health-care providers, health professionals and others from where they should buy or get their medicines; what measures they should take in case they come across such medicines or are affected by the use of such medicines.
Ministries of health, national medicines regulators, health professional associations, nongovernmental organizations and other stakeholders have the responsibility to participate in campaign activities targeting patients and consumers to promote awareness of the problem of counterfeit medicines. Posters, brochures, radio and television programmes are useful means for disseminating messages and advice.
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The machete blades turned red with heat in the fire that the rubber workers built on a Liberia plantation, Thomas Unnasch remembers from a visit in the 1980s.
This was how the men tried to quell the intense itchiness that comes with river blindness, a rare tropical disease.
"You can imagine how bad the itching must be, that running a red-hot machete up and down your back would be a relief, but it was," said Unnasch, whose laboratory works on diagnostic tests for the disease.
About 18 million people have river blindness worldwide, according to the World Health Organization, but more than 99% of cases of this disease are found in Africa. It goes by the technical name "onchocerciasis," and it spreads through small black flies that breed in fast-flowing, highly oxygenated waters. When an infected fly bites a person, it drops worm larvae in the skin, which can then grow and reproduce in the body.
Unlike malaria, river blindness is not fatal, but it causes a "miserable life," said Moses Katabarwa, senior epidemiologist for the Atlanta-based Carter Center's River Blindness Program, which has been leading an effort to eliminate the disease in the Americas and several African countries.
Some strains cause blindness, while others come with more severe skin disease. With time, generally all strains of the disease can lead to rough "lizard" skin, depigmented "leopard skin" and hanging groins. Another big problem among patients is itching, which happens when the worms die inside a person.
In southwest Uganda, the locals call the disease "Obukamba," referring to the symptoms of distorted skin appearance and itchiness, Katabarwa said. In western Uganda, he said, "the fly is called 'Embwa fly' or dog fly, for it bites like a dog!"
There is no vaccine for river blindness, but there is a drug, called ivermectin that paralyzes and kills the offspring of adult worms, according to the Mayo Clinic. It may also slow the reproduction of adult female worms, so there are fewer of them in the skin, blood and eyes. The pharmaceutical company Merck has been donating the treatment, under the brand name Mectizan, since 1985.
Great strides have been made against this disease. In the Americas, it was eliminated in Colombia in 2007 and in Ecuador in 2009.
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Black holes growing faster than expected
Black hole find Existing theories on the relationship between the size of a galaxy and its central black hole are wrong according to a new Australian study.
The discovery by Dr Nicholas Scott and Professor Alister Graham, from Melbourne's Swinburne University of Technology, found smaller galaxies have far smaller black holes than previously estimated.
Central black holes, millions to billions of times more massive than the Sun, reside in the core of most galaxies, and are thought to be integral to galactic formation and evolution.
However astronomers are still trying to understand this relationship.
Scott and Graham combined data from observatories in Chile, Hawaii and the Hubble Space Telescope, to develop a data base listing the masses of 77 galaxies and their central supermassive black holes.
The astronomers determined the mass of each central black hole by measuring how fast stars are orbiting it.
Existing theories suggest a direct ratio between the mass of a galaxy and that of its central black hole.
"This ratio worked for larger galaxies, but with improved technology we're now able to examine far smaller galaxies and the current theories don't hold up," says Scott.
In a paper to be published in the Astrophysical Journal, they found that for each ten-fold decrease in a galaxy's mass, there was a one hundred-fold decrease in its central black hole mass.
"That was a surprising result which we hadn't been anticipating," says Scott.
The study also found that smaller galaxies have far denser stellar populations near their centres than larger galaxies.
According to Scott, this also means the central black holes in smaller galaxies grow much faster than their larger counterparts.
Black holes grow by merging with other black holes when their galaxies collide.
"When large galaxies merge they double in size and so do their central black holes," says Scott.
"But when small galaxies merge their central black holes quadruple in size because of the greater densities of nearby stars to feed on."
Somewhere in between
The findings also solve the long standing problem of missing intermediate mass black holes.
For decades, scientists have been searching for something in between stellar mass black holes formed when the largest stars die, and supermassive black holes at the centre of galaxies.
"If the central black holes in smaller galaxies have lower mass than originally thought, they may represent the intermediate mass black hole population astronomers have been hunting for," says Graham.
"Intermediate sized black holes are between ten thousand and a few hundred thousand times the mass of the Sun, and we think we've found several good candidates."
"These may be big enough to be seen directly by the new generation of extremely large telescopes now being built," says Graham.
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Hoodoos may be seismic gurus
Hoodoo prediction Towering chimney-like sedimentary rock spires known as hoodoos may provide an indication of an area's past earthquake activity.
The research by scientists including Dr Rasool Anooshehpoor, from the United States Nuclear Regulatory Commission, may provide scientists with a new tool to test the accuracy of current hazard models.
Hoodoo formations are often found in desert regions, and are common in North America, the Middle East and northern Africa.
They are caused by the uneven weathering of different layers of sedimentary rocks, that leave boulders or thin caps of hard rock perched on softer rock.
By knowing the strengths of different types of sedimentary layers, scientists can determine the amount of stress needed to cause those rocks to fracture.
The United States Geological Survey (USGS) use seismic hazard models to predict the type of ground motion likely to occur in an area during a seismic event. But, according to Anooshehpoor, these models lack long term data.
"Existing hazard maps use models based on scant data going back a hundred years or so," says Anooshehpoor. "But earthquakes have return periods lasting hundreds or thousands of years, so there is nothing to test these hazard models against."
The researchers examined two unfractured hoodoos within a few kilometres of the Garlock fault, which is an active strike-slip fault zone in California's Red Rock Canyon.
Their findings are reported in the Bulletin of the Seismological Society of America.
"Although we can't put a precise age on hoodoos because of their erosion characteristics, we can use them to provide physical limits on the level of ground shaking that could potentially have occurred in the area," says Anooshehpoor.
The researchers developed a three-dimensional model of each hoodoo and determined the most likely place where each spire would fail in an earthquake.
They then tested rock samples similar to the hoodoo pillars to measure their tensile strength and compared their results with previously published data.
USGS records suggest at least one large magnitude earthquake occurred along the fault in the last 550 years, resulting in seven metres of slip, yet the hoodoos are still standing.
This finding is consistent with a median level of ground motion associated with the large quakes in this region, says Anooshehpoor.
"If an earthquake occurred with a higher level of ground motion, the hoodoos would have collapsed," he says.
"Nobody can predict earthquakes, but this will help predict what ground motions are associated with these earthquakes when they happen."
Dr Juan Carlos Afonso from the Department of Earth and Planetary Sciences at Sydney's Macquarie University says it's an exciting development.
"In seismic hazard studies, it's not just difficult to cover the entire planet, it's hard to cover even small active regions near populated areas," says Afonso.
"You need lots of instruments, so it's great if you can rely on nature and natural objects to help you."
He says while the work is still very new and needs to be proven, the physics seems sound.
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First, an object is placed on the platform of the printer upon – a petrie dish for example. Then the printer must check the height of the object to make sure everything is calibrated correctly. Mr. Carvalho placed a paper card on the platform of the 3D-Bioplotter to demonstrate how the machine works.
Mr. Carvalho then talked us through the printing process. To begin, a liquefied material – in this case a silicone paste – is pressed through a needle-like tip by applying air pressure. The needle moves in all three dimensions which means it is able to create a three dimensional object. The printer is called ‘Bioplotter’ because the unique aspect of this machine is its use of biomaterials to make implants or other objects for biomedical application.
Some of the implants which are made using the 3D Bioplotter are intended to dissolve in the body. The materials which are used in this application include PLLA, PLGA, and silicone.
Implants made with thermoplastics – as they are mostly water and CO2 – are removed by the body naturally in around a week or two. Other materials, such as ceramic paste, may also be used to print implants. The implants printed using ceramic paste do not dissolve. Instead, the body uses this material to create new bone. This actually speeds up the process of the body’s regeneration.
The 3DBioplotter also prints hydrogels – such as collagen or alginate. These materials can have human cells actually added to them. Thus human cells may be printed directly with this machine.
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has thrilled us at Adafruit with its passion and dedication to making solid objects from digital models. Recently, we have noticed that our community integrating electronics projects into 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you take considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless EL Wire and LED projects that are possible when you are modeling your projects!
The Adafruit Learning System has dozens of great tools to get you well on your way to creating incredible works of engineering, interactive art, and design with your 3D printer! If you have a cool project you’ve made that joins the traditions of 3D printing and electronics, be sure to send it in to be featured here!
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Elderly people are at increased risk of food-borne illness because as they age, their immune systems become weaker. In fact, the website for the Centers for Disease Control estimates that each year about 48 million people get sick, 128,000 are hospitalized and 3,000 die from food-borne diseases. The most severe cases tend to occur in the very old.
The good news is that food poisoning can be prevented if you follow proper home food safety practices.
Ruth Frechman, a registered dietitian and spokesperson for the American Dietetic Association, spoke with AgingCare.com about home food safety for elderly people. "Since older adults are at particular risk for food-borne illness, good food safety habits are extremely crucial."
Ms. Frechman says three common cooking and food preparation mistakes can result in unsafe food and potential food poisoning.
Bacteria in raw meat and poultry juices can be spread to other foods, utensils and surfaces. . "To prevent cross-contamination, keep raw foods separate from ready-to-eat foods and fresh vegetables," she says. "For example, use two cuttings boards: one strictly for raw meat, poultry and seafood; the other for ready-to-eat foods like breads and vegetables."
She recommends washing cutting boards thoroughly in hot soapy water after each use or placing them in the dishwasher. Use a bleach solution or other sanitizing solution and rinse with clean water. Always wash your hands after handling raw meat.
Leaving food out too long
Leaving food out too long at room temperature can cause bacteria to grow to dangerous levels that can cause illness. "Many people think it's okay to leave food sitting out for a few hours," Ms. Frechman says. "But that's a dangerous habit. Food should not be left out for more than two hours. And if it's over 90 degrees, like at an outdoor summer barbecue, food should not be out for more than one hour."
Its common knowledge that meat should be cooked to proper temperatures. However, most people don't know that even leftovers that were previously cooked should be re-heated to a certain temperature. Ms. Frechman says re-heating foods to the proper temperature can kill many harmful bacteria.
Leftovers should be re-heated to at least 165 degrees Fahrenheit. "Harmful bacteria are destroyed when food is cooked to proper temperatures," she says. "That's why a food thermometer comes in handy not only for preparing food, but also for re-heating."
How long it is safe to eat leftovers? Not as long as you would think, Ms. Frechman says. Chicken, fish and beef expire after three to four days in the refrigerator. To help seniors track if leftovers are still good, she recommends writing the date on the package of leftovers.
Seniors and their caregivers should take these preventive measures to avoid germs in food and contracting food poisoning. Pay attention to the foods that are eaten, how food is prepared, and properly maintain the food in the refrigerator, and you may avoid an illness that could cause great discomfort, weakening of the body or even death.
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Help kids practice their counting skills with this printable counting to eight (8) worksheet that has a fun birds theme. This worksheet will be a great addition to any numbers or counting lesson plan as well as any birds themed lesson plan. On this worksheet, kids are asked to count the number of cardinals and circle the correct number (eight) at the bottom of the page.
View and Print Your Birds Themed Counting Worksheet
All worksheets on this site were done personally by our family. Please do not reproduce any of our content on your own site without direct permission. We welcome you to link directly to any pages on our site without specific permission. We also welcome any feedback, ideas or anything you want to share with us - just email us at firstname.lastname@example.org.
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- Historic Sites
“To A Distant And Perilous Service”
Westward with the course of empire Colonel Jonathan Drake Stevenson took his way in 1846. With him went the denizens of New York’s Tammany wards, oyster cellars, and gin mills—the future leaders of California.
June/July 1979 | Volume 30, Issue 4
Three weeks later, in a millrace on the American River in northern California, John Marshall spotted the flicker of gold. By the end of summer, 1849, the Los Angeles garrison, like every other encampment of the New York volunteers, was abandoned, the harbinger of Anglo-Saxon civilization scattered to the hills, the coastal towns and villages of California half-deserted. The little port of San Francisco had become the focus of world migration. Captain Folsom, the staff quartermaster, having secured appointment as collector of the port, was on his way to becoming a millionaire. The Russ family, purveyors of Moroccan leather and holiday fireworks, had opened a jewelry shop and begun assembling an empire of hotels, beer gardens, office buildings, and residential blocks. Sergeant John C. Pulis, late of Lippitt’s monstrous Company F, had become the first sheriff of San Francisco. Lieutenant Edward Gilbert was editing the Alta California , the leading newspaper in the territory; Captain Naglee (he of the bathtime rebellion) had founded the territory’s first bank; Lieutenant Hewlett had opened a boardinghouse; Captain Frisbee had started a commission agency and was in prospect of marrying the eldest daughter of General Vallejo; Lieutenant Vermeule, the plague of Abel Stearns, had set himself up as a lawyer and would soon be elected a delegate to the California constitutional convention and a member of the state legislature; and the Reverend Mr. Thaddeus M. Leavenworth, chaplain to the regiment, had attained the quasi-judicial position of alcalde of San Francisco and was granting homesteads and auctioning public lands with a Christian generosity that scandalized even his former associates.
As for the colonel, he was well on his way to a second career (and a second marriage and a second family) as a legal counselor, politician, and founder of a grandiose ghost city called New-York-of-the-Pacific, which endures today only in the name of a slough on the edge of San Francisco Bay.
The former New York boys were scattered by then throughout California, styling themselves doctors, lawyers, judges, or capitalists. A few in San Francisco called themselves the “Hounds”—or, on formal occasions, the “Regulators.” They were the first recognizable New York—style drinking-and-marching society in the Far West, and their raucous behavior soon aroused the more orderly citizens of the town to form the prototype of San Francisco’s several committees of vigilance.
For better or worse, the Americanization of California had begun.
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Dante Alighieri was the greatest Italian poet and one of the most important
European writers. Dante live through the years of 1265 – 1321. He has a very
unique way of writing and started his works at the age of 35. Dante wrote La
Divina Comedia based on the era he live through and all the knowledge of his
lifetime was imbedded in his works. In this specific work he writes about a journey
which he wishes to better understand the afterlife receive his salvation. Throughout
his journey Virgil was his guide and taught him all about the nine circles of hell
and the punishments that the sinners received in each circle. Dante was a very
powerful writer and his writing has many significant symbols to many different
objects. This story is very complex and interesting to read and understand each
After Dante exits hell with his guide Virgil, he arrives into Purgatory.
Purgatory is the in between where Dante sees sinners being punished. Each sin has
a different punishment depending on the sin. Purgatory is a place where sinners
temporarily get punished in order to purify themselves and be ready for heaven.
There these people learn the mistakes they have made and realize the seriousness
of their sins and prepare to enter heaven/paradise. Virgil guides Dante throughout
purgatory and leads him to paradise where Beatrice will be there to guide him to
A very important character of the Divine Comedy is Virgil. Virgil is Dante’s
guide throughout Purgatory. Virgil is a very helpful guide and is a poet whom
Dante looked up to. Virgil symbolized human reason and taught Dante everything
he knows about the inferno and purgatory. Virgil is in the first realm of hell, limbo.
He is in limbo because he is a pagan and was never baptized. Virgil takes Dante
through each circle and describes each circle, the reason people are there and
describes each punishment. Virgil protects Dante from the leaders of each circle as...
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From The Art and Popular Culture Encyclopedia
The fact-value distinction is a concept used to distinguish between arguments that can be claimed through reason alone and those in which rationality is limited to describing a collective opinion. In another formulation, it is the distinction between what is (can be discovered by science, philosophy or reason) and what ought to be (a judgment which can be agreed upon by consensus). The terms positive and normative represent another manner of expressing this, as do the terms descriptive and prescriptive, respectively. Positive statements make the implicit claim to facts (e.g. water molecules are made up of two hydrogen atoms and one oxygen atom), whereas normative statements make a claim to values or to norms (e.g. water ought to be protected from environmental pollution).
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The Nature Elephant
The Karen people have always lived naturally in the forest, and, for many generations have relied on elephants to help them.
Because elephants are ideal for carrying heavy loads they are essential for transportation through rural areas, and, more recently, for carrying tourists. The Karen people simply would not survive without them. The Karen people have always used elephants to help carry them through dense parts of the jungle which would be difficult on foot, such as down steep hills to fetch water from the creek, or carrying heavy bags of rice from the fields to the barn. What is little effort for an elephant would be a huge amount of labour
for humans. Because they are so important to the Karen people, elephants are their friends, and are treated with respect.
To manage an elephant and gain its trust requires knowledge, love and understanding. This is why the Karen people look after their elephants so well, and only certain members of the Karen family are trained enough to do this. Some of them call elephant-care a kind of black magic, and this black magic is passed down through families.
Part of the skill of caring for elephants is to ensure the elephant is listened to. Karen legend has it that if a female elephant is ignored, it is likely that her eggs will become infected, and therefore she will not be able to continue the elephant family. This serious consequence acts as a grave warning to those handling elephants. A sense of duty, honor and patience are as important to the elephant as they are to the Karen people as a whole.
The legend of Chang Karen
This is a story about how elephants became so important in the life of the Karen hill tribe. The legend goes that once upon a time, there were two brothers living in the forest. One day, their mother needed to leave home for a business, so instructed the two boys to look after the house, be good, and by no means split open the bamboo tree, as it contained many flies. Being the mischievous boys they were, as soon as their mother was out of sight, they crept up to the forbidden bamboo and cracked it open, curious to see what would happen.
Immediately, the room was filled with flies, two of which flew up into each of the boys' noses. Panicking, the boys didn't know what to do. Soon, they felt their bodies changing. Their legs began to itch, and grow longer and wider. Their heads began to swell, until they felt the size and shape of footballs. Their noses grew longer and their bodies became heavier and more clumsy.
When their mother returned home, she was shocked to see what had happened to her sons. She offered them cooked rice, but they turned it down with a slow shake of their large heads, their noses swinging from side to side. They were still growing, and were too ashamed of their bad behaviour to eat. The mother offered them water, but they did not want to drink it. Soon, when the sons had grown too big for the house, and could now only walk on four legs, they left the house to find grass. This was all they felt like eating.
Very soon the word spread, and people came from all over the valley to see the mutated boys. Their tongues had become too big for them to speak, so the sons had stopped talking. As if to compensate, their ears grew large so they cold hear very, very well. They had become elephant-boys.
One day, some workers came to see if the elephant-boys could help them carry heavy loads. They gave them wood and lead them to their workshops, and the elephant-boys were calm and obedient. The workers realised that what was a huge job for them, was little effort for these giant elephant boys. And life continued this way for many generations. This is the remarkable story of how elephants and humans came to work together in harmony, explaining how they can exist together in the forest.
Elephants and the Karen Hill Tribe people
Deep in the rich forests of northern Thailand, in the bowl of a green valley, lies the Karen hill tribe community. Making the most of their natural surroundings, this tribe has managed to forge an incredibly simple life in the forest using no modern machinery or medicine. They need only the trees, plants, animals, and are especially reliant on the mighty elephant.
The Karen people have a strong bond with elephants: their self-sufficient lifestyles are surprisingly similar, and intertwining. Wild elephants play a very important role in the Karen way of life, as well as the relationships of valley inhabitants, and the magic of the valley.
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Next: Radiative heat flux Up: Loading Previous: Distributed heat flux Contents
Convective heat flux is a flux depending on the temperature difference between the body and the adjacent fluid (liquid or gas) and is triggered by the *FILM card. It takes the form
where is the a flux normal to the surface, is the film coefficient, is the body temperature and is the environment fluid temperature (also called sink temperature). Generally, the sink temperature is known. If it is not, it is an unknown in the system. Physically, the convection along the surface can be forced or free. Forced convection means that the mass flow rate of the adjacent fluid (gas or liquid) is known and its temperature is the result of heat exchange between body and fluid. This case can be simulated by CalculiX by defining network elements and using the *BOUNDARY card for the first degree of freedom in the midside node of the element. Free convection, for which the mass flow rate is a n unknown too and a result of temperature differences, cannot be simulated.
Next: Radiative heat flux Up: Loading Previous: Distributed heat flux Contents guido dhondt 2012-10-06
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Guest Author - Heather Thomas
In most wild species, birds display dominance within the flock to determine their place or roll within that flock. Males display and vocalize to win their choice of female. The term “pecking order” comes from natural bird behavior. Dominant behavior is natural and expected in the wild. We must be cautious, as humans, not to project our sense of right and wrong onto our feathered companions.
Similar to birds that still live in the wild, your bird may be only a few generations removed from the wild and will display natural behavior tendencies. Understanding these basic characteristics helps you understand how to interact with your bird and creates a happier flock experience for all.
The Lunging or Biting Bird
One must be cautious to label “bad” behavior as dominant behavior. Lunging and biting are most often caused by fear. Changing a bird’s environment too drastically such as cage placement, a new cage, rearranging the furniture in a room or even something as simple as changing the drapery on the window next to their cage can cause even a friendly bird to become seemingly aggressive. It is important to consider environmental changes before labeling your bird’s behavior as dominant. Typical dominant behavior that manifests itself as biting or lunging would be a bird that loves to sit only on your shoulder and bites you when you attempt to remove them. Protecting a favorite person or place in your home by lunging or biting at others who happen to come too close would also be correctly labeled as dominant behavior.
The Bully Bird
You may have a situation where you keep more than one bird in a cage. If you have a flock that works well together you will be able to tell who the dominant male is but it will not adversely affect your flock. If you have a dominant male that is a bully, you may observe him forcing other birds off of their perch or guarding a food dish and not letting anyone else eat from it. In worst-case scenarios, your bully will single out a victim and force that bird to dwell at the bottom of the cage or even injure and possibly kill this weaker bird. If you have a dominant bully, it is best to remove him from the cage and keep him in a cage by himself or with his mate.
The Anti-Social Bird
As much as you try your bird has no interest in becoming your friend. This bird often flutters around its cage to avoid your hand or takes to flight to escape your reach. I find this behavior often typical of a bird with unclipped wings. There are people who keep birds that believe it is cruel to clip a bird’s wings. I will cover this topic in depth at a later time but here will touch on effects not clipping your bird’s wings has on dominance. By the very act of keeping a bird as a pet, you are choosing to take this wonderful winged creature and transform it into your friend or companion. If you take this action, it changes the purpose of the animal. If you allow your bird to retain the ability of flight, you are permitting your bird to escape your reach and do whatever it wants. This may be fine, if you want a wild bird as a pet. However, if you want a friendly bird, you want a bird dependent on you, a bird that does not fly away just because it wants to.
For a well-mannered bird, keep the flock mentality where you are the dominant bird. If you want a bird that respects you, you must maintain dominance. This is not achieved by cruel discipline. Observe your bird and be consistent with your expectations and interaction within your flock. Do not allow unacceptable dominant behavior to take root in your avian friend.
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Fun Classroom Activities
The 20 enjoyable, interactive classroom activities that are included will help your students understand the text in amusing ways. Fun Classroom Activities include group projects, games, critical thinking activities, brainstorming sessions, writing poems, drawing or sketching, and more that will allow your students to interact with each other, be creative, and ultimately grasp key concepts from the text by "doing" rather than simply studying.
1. A Year from Now
Where will Bone be and how will she be feeling a year from now? Write a one page description of Bone's life a year after the end of the book from Bone's perspective.
2. The Monster Within
When Bone's anger is described, it seems to grow and even take form. Take one of the descriptions for Bone's anger and rage and draw it.
3. Bone's Poetry
Write a poem as if you are Bone. The poem can be...
This section contains 555 words|
(approx. 2 pages at 300 words per page)
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Simply begin typing or use the editing tools above to add to this article.
Once you are finished and click submit, your modifications will be sent to our editors for review.
female Finn Dorset sheep that lived from 1996 to 2003, the first successfully cloned mammal, produced by Scottish geneticist Ian Wilmut and colleagues of the Roslin Institute, near Edinburgh. The announcement in February 1997 of the world’s first clone of an adult animal was a milestone in science, dispelling decades of presumption that adult mammals could not be cloned and igniting a debate...
...senior scientific officer at the Animal Breeding Research Organisation (ABRO; renamed Edinburgh Research Station of the Institute of Animal Physiology and Genetics Research in 1985 and finally Roslin Institute in 1993), a government-supported research facility located in Roslin, Scot., just south of Edinburgh. At the ABRO facility, Wilmut studied embryo development and became interested in...
What made you want to look up "Roslin Institute"? Please share what surprised you most...
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The history of the British Isles and its inhabitants, both human and canine, has long been entwined. Breed reveals the enduring and affectionate relationship between the British people and their dogs and explores the very beginnings of pedigree dog breeding in Britain.
This is a "self delivery" pack which has been designed specifically for National Science and Engineering Week 2013. The science behind fingeprints is well known! What is not so well known is the link between fingerprints and footprints. Right Angle Events have launched a new education pack called ‘Toes for Turf’ comprising at least 4 hours of fun teaching material linked to Key Stage 1-4 Mathematics.
We have designed a fantastic scheme especially for National Science & Engineering Week called "Toes For Turf". The science behind fingerprints is well known. What is not so well known is the science behind footprints or "feet prints". This activity enables students to take, classify and "lift" both fingerprints and foot prints. As the research on footprints is meagre, this scheme will allow students to make some discoveries about the correlation or otherwise between fingerprints and feet prints.
We will be running a science club for children from the junior school for 8 weeks before science week. Children will be working on projects designed by local scientists and making posters to show what they've done. A competition will be held and prizes will be given for the best posters and projects. During science week we'll have a science day for the whole school. Local scientists will come to the school and we'll have science themed activities all day.
Imagine you are part of the team planning and designing the first manned mission to Mars. Your job is to investigate just one problem of the mission, and come up with an idea that might solve it. You’re asked to create a poster, no bigger than A1-sized, to explain the problem and your idea. The idea can be anything you like, but it must be based on real-science. The competition is for Years 7, 8, or 9. We can accept both individual and team entries. All Posters must be received by us by 4pm 12th March 2013. You can hand your posters in through participating schools and STEM clubs.
Primary School competition - teams of four to prepare a 5 minute demo and supporting display on the theme of Inventions and Discoveries. Winning team from each school to compete at Chipping Campden School Primary Science Conference on March 18th. An egg race type activity will also form part of the competition. A demo lecture will finish the proceedings.
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Biomass plants generate electricity by burning what otherwise would be waste: brushy undergrowth that's been cleared from forests.
The U.S. Forest Service estimates that on California national forest lands alone, there are easily 500,000 acres per year that should be thinned to reduce the risk of catastrophic wildfire.
But to Tom Christoff of the Placer County Air Pollution Control District it's not only about reducing forest fires and producing electricity. He says by burning this waste in controlled emission plant, instead of in smoky piles in the forest:
CHRISTOFF: "The benefits are huge, on the order of 95 percent reduction on particulate matter, 60 to 70 percent reduction on nitrous oxides, and considerable percentrage on carbon monoxide and volatile organic compounds."
Christoff says independent studies showed this would lead to demonstrable health benefits. That's one of the many reasons Placer County is planning to build a 2 megawatt biomass plant on county-owned land just outside Truckee.
Transportation cost is a complicating factor. It's much cheaper to burn the biomass in a pile in the forest than to truck it to a facility, says Kerri Timmer, who works for the state's Sierra Nevada Conservancy.
TIMMER: "And there's at this point no guarantee for what price will be paid for the power that's generated using the material. So it's hard to get all of these commitments lined up to a point where an investor would feel comfortable in putting a lot of money into this up front."
But recent legislation should help. A bill passed this year requires California's three biggest energy producers to purchase 50 megawatts of energy generated from forest biomass power plants.
That's about enough electricity to power 50,000 homes.
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On May 15, the House Agriculture Committee passed its 2013 farm bill. The bill would cut the Supplemental Nutrition Assistance Program (SNAP, formerly known as the Food Stamp Program) by almost $21 billion over the next decade, eliminating food assistance to nearly 2 million low-income people, mostly working families with children and senior citizens.
The bill’s SNAP cuts would come on top of an across-the-board reduction in benefits that every SNAP recipient will experience starting November 1, 2013.
The Supplemental Nutrition Assistance Program’s (SNAP) primary purpose is to increase the food purchasing power of eligible low-income households in order to improve their nutrition and alleviate hunger and malnutrition. The program’s success in meeting this core goal has been well documented. Less well understood is the fact that the program has become quite effective in supporting work and that its performance in this area has improved substantially in recent years.
The Supplemental Nutrition Assistance Program (SNAP, formerly known as the Food Stamp Program) is the nation’s most important anti-hunger program. In 2012, it helped almost 47 million low-income Americans to afford a nutritionally adequate diet in a typical month.
Nearly 72 percent of SNAP participants are in families with children; more than one-quarter of participants are in households with seniors or people with disabilities.
SNAP is the nation’s most important anti-hunger program.
This chartbook highlights some of the key characteristics of the almost 47 million people using the program as well as trends and data on program administration and use.
Related: SNAP is Effective and Efficient
SNAP, the nation’s most important anti-hunger program, helps roughly 35 million low-income Americans to afford a nutritionally adequate diet. WIC — short for the Special Supplemental Nutrition Program for Women, Infants, and Children — provides nutritious foods, information on healthy eating, and health care referrals to about 8 million low-income pregnant and postpartum women, infants, and children under five. The School Lunch and School Breakfast programs provide free and reduced-price meals that meet federal nutritional standards to over 22 million school children from low-income families.
- Introduction to SNAP
The Center designs and promotes polices to make the Food Stamp Program more adequate to help recipients afford an adequate diet, more accessible to eligible families and individuals, and easier for states to administer. We also help states design their own food stamp programs for persons ineligible for the federal program. Our work on the WIC program includes ensuring that sufficient federal funds are provided to serve all eligible applicants and on helping states contain WIC costs. Our work on child nutrition programs focuses on helping states and school districts implement recent changes in how they determine a child's eligibility for free or reduced-priced school meals.
May 17, 2013
Revised May 16, 2013
Updated May 8, 2013
Revised May 1, 2013
Updated May 1, 2013
- View All By Date
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February is National Teen Dating Violence Awareness & Prevention Month
Did you know that in a recent national survey, 1 in 10 teens reported being hit or physically hurt on purpose by a boyfriend or girlfriend at least once in the 12 months prior to the survey? And nearly half of all teens in relationships say they know friends who have been verbally abused.
Before violence starts, a teen may experience controlling behavior and demands. One partner may tell another what to wear and who to hang out with. Over time, the unhealthy behavior may become violent. That's why adults need to talk to teens now about the importance of developing healthy, respectful relationships.
Dating violence can have a negative effect on health throughout life. Victims of teen dating violence are more likely to do poorly in school, and report binge drinking, suicide attempts, physical fighting, and current sexual activity. Teens who perpetrate dating violence may also carry these patterns of violence into future relationships.
CDC's Division of Violence Prevention is leading the initiative, Dating Matters™: Strategies to Promote Healthy Teen Relationships. Dating Matters™ aims to promote respectful, nonviolent dating relationships among youth in high-risk, urban communities. The comprehensive approach will build upon current evidence-based practice and experience to reduce the burden of teen dating violence in these communities. The initiative will support communities as they implement prevention strategies in schools, with families, and in neighborhoods.
Over the next five years, Dating Matters™ will be implemented in middle schools and neighborhoods across Chicago, Illinois, Baltimore, Maryland, Ft. Lauderdale, Florida, and Oakland, California. For more information about each of these communities, view the Dating Matters™ grantee profiles.
Learn more about CDC's efforts to prevent dating violence:
Get email updates
To receive email updates about this page, enter your email address:
- Centers for Disease Control and Prevention
1600 Clifton Rd
Atlanta, GA 30333
TTY: (888) 232-6348
- Contact CDC-INFO
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Sponsor a Child in Guinea
- ChildFund came to Guinea: 2005
- Population below poverty line: 49%
- News about Guinea
- Children’s Voices: Fatoumata From Guinea
- Around the Globe with ChildFund in 31 Days: Protecting Children in Guinea
- Amid Violence, Work in Guinea Continues
- A Family’s Access to Resources Means Hope Read More
Guinea is a significant source of the world’s major minerals including gold, diamonds, iron ore and bauxite but the country’s poor infrastructure and political uncertainty prohibits it from developing its economic potential from these and other resources.
Located in western Africa on the North Atlantic Ocean between Guinea-Bissau and Sierra Leone, Guinea is smaller than the state of Oregon and suffers from a lack of safe water, environmentally damaged mining regions and preventable diseases.
“We’ve brought important knowledge… to local health workers.”
Education and Early Childhood Development
Many children in Guinea are not in school, and for younger children, there is often no foundation for later learning. Our Early Childhood Development (ECD) programs include building ECD Centers and supplying them with materials and tools used to train families about child protection and healthy development.
More than 3340 children have attended school in our ECD Centers and we have educated families in more than 530 homes about how to protect their children and motivate their development.
Healthier Families and Children
Working with the Ministry of Health, we’ve brought important knowledge, including information about HIV and AIDS, to local health workers and have hired and trained 128 community volunteers to educate the community about disease prevention, proper hygiene and more. We also work to make health services affordable.
To provide access to safe water and sanitation facilities, we have provided 29 water systems.
Sponsor a child in Guinea today and make a difference in a child’s life.
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How do you get HIV?
HIV can be passed on when infected bodily fluid, such as blood or semen, is passed into an uninfected person. Semen is the liquid which is released from a man's penis during sex which carries sperm. It can be infected with HIV or AIDS when someone is HIV positive or is carrying the AIDS virus. This can happen during unprotected sex. For example when two people have sex without using a condom when one partner is already infected, or between drug users who inject and share needles.
It can't be transmitted by things like coughing, sneezing, kissing, sharing a toilet seat, swimming pools, sweat and tears.
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Why can some people drink heavily and never become alcoholics when other people get addicted so quickly?
Contributing Factors to the Development of Alcoholism
Why some people can use and even abuse alcohol without ever developing alcoholism, and why some people seem unusually susceptible to alcoholism, remains a poorly understood phenomenon.
There is a genetic component to alcoholism, and people who grow up in alcoholic homes are far more likely to become alcoholics themselves. Children born to alcoholic parents, but raised in homes without alcohol abuse or addiction are also predisposed to alcoholism, so we do know that genetics plays an important role. But all people genetically predisposed to alcoholism do not develop dependencies, and some people with no genetic history of alcoholism end up battling the disease for years. It is now accepted that although a genetic predisposition plays an important influence in the development of the disease, that social and environmental factors are in fact the lager influences towards alcohol abuse or alcoholism.
In addition to genetic influences, the Mayo Clinic considers that there are three additional primary influences to alcohol abuse or alcoholism.
Emotional States or Emotional Stressors can Induce Alcohol Abuse and Alcoholism
People may use alcohol excessively in response to frequent or significant emotional disturbances or stresses. When alcohol is used with enough frequency as an emotional management or stress coping tool the risk of dependency or alcoholism increases greatly. There is also likely a bio physical link with stress and alcohol abuse, and stress hormones have been casually linked to increased alcohol consumption and a greater risk for alcoholism.
People who use alcohol to deal with life's problems or stresses are at a greater risk to develop alcoholism.
The Co-Presence of a Corresponding Psychiatric Condition
People suffering through psychiatric conditions like depression, bi polar disorder, borderline personality disorder or anxiety disorders are at a greatly elevated risk to develop alcohol abuse problems or alcoholism. Psychiatric patients often use alcohol or other illicit drugs to self medicate the negative symptoms of an experienced disorder. Unfortunately, while intoxication may bring some temporary relief, the long term effects of alcohol abuse almost always worsen experienced psychiatric symptoms. Alcoholic psychiatric patients are at a great risk for an accelerated progression of both diseases, and require immediate interventions and treatment.
In addition to clinical psychiatric conditions, non clinical, but still significant factors such as low self esteem can also increase the likelihood to alcohol abuse, and ultimately alcoholism. Alcohol is rarely an effective long term coping strategy.
Social Environmental Factors
As a society, largely due to billions of dollars invested in alcohol advertising campaigns, there is a perception of alcohol being associated with glamour, attractiveness and success, and these lingering subconscious perceptions may influence people to try alcohol at a young age and continue to drink more than they should throughout life.
The immediate environment can also increase the probability of alcoholism. People who socialize, or live romantically with a person who drinks to excess, whether dependent or not, are far more likely to also drink heavily, and put themselves at risk for alcohol abuse and alcoholism.
Even the neighborhood around the home seems to influence consumption patterns, and people brought up in or who reside in neighborhoods of heavy abuse are also more likely to use and abuse alcohol themselves.
Nothing about alcoholism is completely understood, and all we know is that the variables that can induce alcohol abuse and ultimately alcoholism are many, and that what may cause alcohol dependence in one, seem to have little influence over another. We all present with an individual risk profile for our susceptibility to the disease, although those people with a genetic history of alcoholism are undoubtedly at an increased risk to develop the disease.
Regardless of the factors that may induce the occurrence of the disease, the treatments are essentially the same, and alcoholics need intervention, intensive treatment, and long term aftercare therapies. Most alcoholics will never be capable of drinking in moderation, and abstinence is the only recommended philosophy of use for people with alcoholic histories.
Page last updated Sep 23, 2012
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Reality in everyday usage means "everything that exists". The term reality, in its widest sense, includes everything that is, whether it is observable, comprehensible, or self-contradictory by science, philosophy, or any other system of analysis. Reality in this sense may include both being and nothingness, whereas existence is often restricted to being (compare with nature).
In the strict sense of Western philosophy, there are levels or gradation to the nature and conception of reality. These levels include, from the most subjective to the most rigorous: phenomenological reality, truth, fact, and axiom.
Other philosophies, particularly those founded in eastern religions like Hinduism and Buddhism have different explications of reality. Conceptions of reality in Buddhism include: dharma, paramattha dhamma, samsara and maya (illusion in Sanskrit).
== Phenomenological reality =
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Asthma Outreach and Education
Clean Air Council is currently working in medically under-served communities of Philadelphia to educate asthma patients of all ages, parents, and health care professionals about indoor and outdoor environmental asthma triggers. Asthma is a chronic condition of the lungs that makes people more sensitive to air pollution. Asthma is caused by genetics and exposure to pollution, allergens, and toxins found in indoor and outdoor air.
The Council provides information on basic asthma health, air pollution and health, indoor air quality checklists, and the tools available for reducing pollution in your community. The Council has materials created especially for eduacting children, including an interactive asthma triggers game and coloring books. The Council also works to connect community members with free or low-cost health and asthma management services throughout the city.
In addition to offering materials, the Council can also provide your community group or health care organization with a free workshop on indoor and outdoor air pollution, how it affects health, and the many low- to no-cost strategies for reducing exposure.
Feel free to contact us should you like to schedule a workshop or have any questions about how we can meet the needs of your organization.
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Brain Matures a Few Years Late in ADHD
but Follows Normal Pattern
A 2007 press release from the National Institute of Mental Health discusses brain development in ADHD youths. In some cases, brain development is delayed as much as three years. The full release and related video are available on the NIMH site: Brain Matures a Few Years Late in ADHD, but Follows Normal Pattern.
Autistic Spectrum Disorders (ASD):
How to Help Children with Autism Learn
From Dr. Lauer and Dr. Beaulieu's talk
Quick facts about Pervasive Developmental Disorders (PDD)/ Autistic Spectrum Disorders (ASD)
- Autism is a 'spectrum disorder' meaning that it affects children in different ways and at different times in their development.
- Typically, delays and learning problems can emerge in several areas of functioning including social functioning, communication skills, motor skills, and overall intellectual potential.
- Each child has their own learning style that includes specific learning challenges as well as areas of preserved skills and, at times, exceptional abilities.
- Both autism and Asperger's disorder are on the same continuum but are distinct in their expression.
What are the challenges students with PDD/ASD frequently experience?
- Academic difficulties that can often be misinterpreted as learning disabilities.
- Problems with executive functioning skills.
- Difficulty in forming relationships with peers.
- Emotional difficulties due to learning and social problems such as anxiety, depression, low self-esteem.
- Fear of new situations and trouble adjusting to changes.
- May look like or be misconstrued as attention-deficit-hyperactivity disorder (ADHD), Nonverbal Learning Disability (NLD), Oppositional-Defiant Disorder or Obsessive Compulsive Disorder (OCD).
Why choose US to help YOU?
- Our evaluations are conducted by neuropsychologists who have been extensively trained in the early detection of autistic spectrum disorders and in the identification of specific patterns of learning strengths and weaknesses that are often associated with this condition.
- Our evaluations help determine which teaching style is best suited to fit an individuals' specific learning profile; we also offer suggestions regarding compensatory educational approached.
- We work as a team with other learning professionals, advocates and health professionals to enhance the child's potential for success in all settings.
'The design of truly individual treatment plans that exploit strengths and compensate for weaknesses begins with a detailed understanding of how learning is different for children with autism than for those without autism and how learning is different among children with autism.'
— Bryna Siegel, Ph.D., author of Helping Children with Autism Learn
For more information on current research, interventions and programs, follow us on Facebook.
Coming to see you for an evaluation was so helpful and Im so happy that I did this. After struggling for years with ADHD but not knowing thats what it was and almost completely ruining our marriage because of it, your diagnosis helped more than you could know. Now I know that its not just me the diagnosis has turned our lives around and helped me feel more accomplished at work. Thanks again for everything.
Sandy and Bob M.
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