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Strict function | In computer science and computer programming, a function f is said to be strict if, when applied to a non-terminating expression, it also fails to terminate. A strict function in the denotational semantics of programming languages is a function f where =⊥ . The entity ⊥ , called bottom, denotes an expression that does not return a normal value, either because it loops endlessly or because it aborts due to an error such as division by zero. A function that is not strict is called non-strict. A strict programming language is one in which user-defined functions are always strict. |
Penultimate Glacial Period | The Penultimate Glacial Period (PGP) is the glacial age that occurred before the Last Glacial Period. The penultimate glacial period is officially unnamed just like the Last Glacial Period. The word penultimate simply means second to last. While the PGP is a part of the ongoing Quaternary ice age, which began 2.58 million years ago, the PGP lasted from ~194,000 years ago, to ~135,000 years ago. The PGP also occurred during the Marine Isotope age 6 (MIS6). At the glacial ages’ height, it is known to be the most extensive expansion of glaciers in the last 400,000 years over Eurasia, and could be the second or third coolest glacial period over the last 1,000,000 years, as shown by ice cores. Due to this, the global sea level dropped to between 92 and 150 metres below modern-day global mean sea level. The penultimate glacial period expanded ice sheets and shifted temperature zones worldwide, which had a variety of effects on the world's environment, and the organisms that lived in it. At its height, the penultimate glacial period was a more severe glaciation than the Last Glacial Maximum. The PGP is an unofficial name for the last period of the Saalian glaciation, called the Wolstonian Stage in Britain. |
Ecosophy | Ecosophy or ecophilosophy (a portmanteau of ecological philosophy) is a philosophy of ecological harmony or equilibrium. The term was coined by the French post-structuralist philosopher and psychoanalyst Félix Guattari and the Norwegian father of deep ecology, Arne Næss. |
Gog (Marvel Comics) | == G-Type == G-Type is a fictional character from Marvel comics. |
Parkerian Hexad | The Parkerian hexad is a set of six elements of information security proposed by Donn B. Parker in 1998. The Parkerian hexad adds three additional attributes to the three classic security attributes of the CIA triad (confidentiality, integrity, availability). |
Casas-Alvero conjecture | In mathematics, the Casas-Alvero conjecture is an open problem about polynomials which have factors in common with their derivatives, proposed by Eduardo Casas-Alvero in 2001. |
Nabataean (Unicode block) | Nabataean is a Unicode block containing characters for writing the ancient Nabataean language. |
BookBrowse | BookBrowse is an online magazine and website that provides book reviews, author interviews, book previews, and reading guides. The magazine is independent of publishers and does not sell books that it reviews. The site offers both free and premium content that is available by subscription. |
Embedded database | An embedded database system is a database management system (DBMS) which is tightly integrated with an application software; it is embedded in the application. It is a broad technology category that includes: database systems with differing application programming interfaces (SQL as well as proprietary, native APIs) database architectures (client-server and in-process) storage modes (on-disk, in-memory, and combined) database models (relational, object-oriented, entity–attribute–value model, network/CODASYL) target marketsThe term embedded database can be confusing because only a small subset of embedded database products are used in real-time embedded systems such as telecommunications switches and consumer electronics. (See mobile database for small-footprint databases that could be used on embedded devices.) |
Trismus | Trismus, commonly called lockjaw as associated with tetanus, is a condition of limited jaw mobility. It may be caused by spasm of the muscles of mastication or a variety of other causes. Temporary trismus occurs much more frequently than permanent trismus. It is known to interfere with eating, speaking, and maintaining proper oral hygiene. This interference, specifically with an inability to swallow properly, results in an increased risk of aspiration. In some instances, trismus presents with altered facial appearance. The condition may be distressing and painful. Examination and treatments requiring access to the oral cavity can be limited, or in some cases impossible, due to the nature of the condition itself. |
Resource-oriented computing | Resource Oriented Computing (ROC) is a simple abstract computing model used for describing, designing, and implementing software and software systems. The fundamental idea behind ROC is derived from the World Wide Web, Unix, and other sources as well as original research conducted at HP Laboratories. |
HD 15558 | HD 15558 (HIP 11832) is a massive O-type multiple star system in Cassiopeia and is specifically in our galaxy's Heart Nebula in open cluster IC 1805. The primary is a very massive star with 152 M☉ and 660,000 L☉. |
Centrifugal abdominal lipodystrophy | Centrifugal abdominal lipodystrophy is a skin condition characterized by areas of subcutaneous fat loss that slowly enlarge.: 496–7 |
3-Nitrochlorobenzene | 3-Nitrochlorobenzene is an organic compound with the formula C6H4ClNO2. It is a yellow crystalline solid that is important as a precursor to other compounds due to the two reactive sites present on the molecule. |
Windows 9x | Windows 9x is a generic term referring to a series of Microsoft Windows computer operating systems produced from 1995 to 2000, which were based on the Windows 95 kernel and its underlying foundation of MS-DOS, both of which were updated in subsequent versions. The first version in the 9x series was Windows 95, which was succeeded by Windows 98 and then Windows Me, which was the third and last version of Windows on the 9x line, until the series was superseded by Windows XP.Windows 9x is predominantly known for its use in home desktops. In 1998, Windows made up 82% of operating system market share.Internal release versions for versions of Windows 9x are 4.x. The internal versions for Windows 95, 98, and Me are 4.0, 4.1, and 4.9, respectively. Previous MS-DOS-based versions of Windows used version numbers of 3.2 or lower. Windows NT, which was aimed at professional users such as networks and businesses, used a similar but separate version number between 3.1 and 4.0. All versions of Windows from Windows XP onwards are based on the Windows NT codebase. |
V-Prop | The V-Prop is an automatic self-powering electronic variable-pitch propeller developed by Silence Aircraft, the manufacturers of the Silence Twister single-seat elliptical-winged kitplane. |
Expressions of dominance | Power and dominance-submission are two key dimensions of relationships, especially close relationships in which parties rely on one another to achieve their goals and as such it is important to be able to identify indicators of dominance.Power is the ability to influence behavior and may not be fully assessable until it is challenged with equal force. Unlike power, which can be latent, dominance is a manifest condition characterized by individual, situational and relationship patterns in which attempts to control another party or parties may or may not be accepted. Moskowitz, Suh, and Desaulniers (1994) describe two similar ways that people can relate to society as parties to interpersonal relationships: agency and communion. Agency includes status and is on a continuum from assertiveness-dominance to passive-submissiveness; it can be measured by subtracting submissiveness from dominance. Communion includes love and falls on a continuum from warm-agreeable to cold-hostile-quarrelsome. Those with the greatest and least power typically do not assert dominance while those with more equal relationships make more control attempts.Power and dominance are closely related concepts that greatly impact relationships. In order to understand how dominance captures relationships one must understand the influence of gender and social roles while watching for verbal and nonverbal indicators of dominance. |
Simplex signaling | Simplex signaling (SX) is signaling in which two conductors are used for a single telecommunication circuit, and a center-tapped coil, or its equivalent, is used to split the signaling current equally between the two conductors. The return path for the current is through ground. It is distinct from a phantom circuit in which the return current path for power or signaling is provided through different signal conductors. |
Overcategorization | Overcategorization, overcategorisation or category clutter is the process of assigning too many categories, classes or index terms to a given document. It is related to the Library and Information Science (LIS) concepts of document classification and subject indexing. |
Electric shaver | An electric shaver (also known as the dry razor, electric razor, or simply shaver) is a razor with an electrically powered rotating or oscillating blade. The electric shaver usually does not require the use of shaving cream, soap, or water. The razor may be powered by a small DC motor, which is either powered by batteries or mains electricity. Many modern ones are powered using rechargeable batteries. Alternatively, an electro-mechanical oscillator driven by an AC-energized solenoid may be used. Some very early mechanical shavers had no electric motor and had to be powered by hand, for example by pulling a cord to drive a flywheel. |
Imageability | Imageability is a measure of how easily a physical object, word or environment will evoke a clear mental image in the mind of any person observing it. It is used in architecture and city planning, in psycholinguistics, and in automated computer vision research. In automated image recognition, training models to connect images with concepts that have low imageability can lead to biased and harmful results. |
Show, don't tell | Show, don't tell is a narrative technique used in various kinds of texts to allow the reader to experience the story through actions, words, subtext, thoughts, senses, and feelings rather than through the author's exposition, summarization, and description. It avoids adjectives describing the author's analysis and instead describes the scene in such a way that readers can draw their own conclusions. The technique applies equally to nonfiction and all forms of fiction, literature including haiku and Imagism poetry in particular, speech, movie making, and playwriting.The concept is often attributed to Russian playwright Anton Chekhov, reputed to have said "Don't tell me the moon is shining; show me the glint of light on broken glass." In a letter to his brother, Chekhov actually said, "In descriptions of Nature one must seize on small details, grouping them so that when the reader closes his eyes he gets a picture. For instance, you’ll have a moonlit night if you write that on the mill dam a piece of glass from a broken bottle glittered like a bright little star, and that the black shadow of a dog or a wolf rolled past like a ball."It has become, by the mid-twentieth century, an important element in Anglo-Saxon narratological theory, according to dramatist and author Arthur E. Krows, the American dramatist Mark Swan told Krows about the playwriting motto "Show – not tell" on an occasion during the 1910s. In 1921, the same distinction, but in the form picture-versus-drama, was utilized in a chapter of Percy Lubbock's analysis of fiction, The Craft of Fiction. In 1927, Swan published a playwriting manual that made prominent use of the showing-versus-telling distinction throughout. |
Mr. Ouch | Mr. Ouch is a hazard symbol developed by the US’s National Electrical Manufacturers Association (NEMA) to represent electrical hazard within pad-mounted transformers. Unlike other high-voltage warning symbols, Mr. Ouch was specifically designed with young children in mind. It is part of NEMA Standard 260-1996, Safety Labels for Pad-Mounted Switchgear and Transformers Sited in Public Areas, which lays out design guidelines for a complete label design that incorporates the Mr. Ouch symbol.Mr. Ouch is similar in name, purpose, and concept to the UPMC Children's Hospital of Pittsburgh's "Mr. Yuk" design used to label poisonous substances, although the two symbols were developed independently. |
Charge contrast imaging | Charge contrast imaging is a scanning electron microscope imaging mode which can produce images of otherwise invisible microstructures in insulating materials and in fossils. While the technique clearly illustrates changes in minerals which reflect genuine compositional differences, the method by which such phenomena occur is not understood. It is thought to involve the interaction of several electronic forces, including the incoming electrons emitted by the SEM machine, local charge variations in the sample being imaged, the flow of ions in the sample, and any electric fields existing; these may be controlled by structures within the sample which assist in the accumulation of charge. |
Voltage controller | A voltage controller, also called an AC voltage controller or AC regulator is an electronic module based on either thyristors, triodes for alternating current, silicon-controlled rectifiers or insulated-gate bipolar transistors, which converts a fixed voltage, fixed frequency alternating current (AC) electrical input supply to obtain variable voltage in output delivered to a resistive load. This varied voltage output is used for dimming street lights, varying heating temperatures in homes or industry, speed control of fans and winding machines and many other applications, in a similar fashion to an autotransformer. Voltage controller modules come under the purview of power electronics. Because they are low-maintenance and very efficient, voltage controllers have largely replaced such modules as magnetic amplifiers and saturable reactors in industrial use. |
DAVID | DAVID (the database for annotation, visualization and integrated discovery) is a free online bioinformatics resource developed by the Laboratory of Human Retrovirology and Immunoinformatics (LHRI). All tools in the DAVID Bioinformatics Resources aim to provide functional interpretation of large lists of genes derived from genomic studies, e.g. microarray and proteomics studies. DAVID can be found at https://david.ncifcrf.gov/ The DAVID Bioinformatics Resources consists of the DAVID Knowledgebase and five integrated, web-based functional annotation tool suites: the DAVID Gene Functional Classification Tool, the DAVID Functional Annotation Tool, the DAVID Gene ID Conversion Tool, the DAVID Gene Name Viewer and the DAVID NIAID Pathogen Genome Browser. The expanded DAVID Knowledgebase now integrates almost all major and well-known public bioinformatics resources centralized by the DAVID Gene Concept, a single-linkage method to agglomerate tens of millions of diverse gene/protein identifiers and annotation terms from a variety of public bioinformatics databases. For any uploaded gene list, the DAVID Resources now provides not only the typical gene-term enrichment analysis, but also new tools and functions that allow users to condense large gene lists into gene functional groups, convert between gene/protein identifiers, visualize many-genes-to-many-terms relationships, cluster redundant and heterogeneous terms into groups, search for interesting and related genes or terms, dynamically view genes from their lists on bio-pathways and more. |
Nanochannel glass materials | Nanochannel glass materials are an experimental mask technology that is an alternate method for fabricating nanostructures, although optical lithography is the predominant patterning technique.Nanochannel glass materials are complex glass structures containing large numbers of parallel hollow channels. In its simplest form, the hollow channels are arranged in geometric arrays with packing densities as great as 1011 channels/cm2. Channel dimensions are controllable from micrometers to tens of nanometers, while retaining excellent channel uniformity. Exact replicas of the channel glass can be made from a variety of materials. This is a low cost method for creating identical structures with nanoscale features in large numbers. |
Acyltransferase like 2 | Acyltransferase like 2 (or lysophosphatidylcholine acyltransferase) is an enzyme which converts lysophospatidylcholine and phosphatidylcholine. |
Pettis integral | In mathematics, the Pettis integral or Gelfand–Pettis integral, named after Israel M. Gelfand and Billy James Pettis, extends the definition of the Lebesgue integral to vector-valued functions on a measure space, by exploiting duality. The integral was introduced by Gelfand for the case when the measure space is an interval with Lebesgue measure. The integral is also called the weak integral in contrast to the Bochner integral, which is the strong integral. |
Loosemore–Hanby index | The Loosemore–Hanby index measures disproportionality of electoral systems, how much the principle of one person, one vote is violated. It computes the absolute difference between votes cast and seats obtained using the formula: LH=12∑i=1n|vi−si| ,where vi is the vote share and si the seat share of party i such that Σivi=Σisi=1 and n is the overall number of parties.
This index is minimized by the largest remainder (LR) method with the Hare quota. Any apportionment method that minimizes it will always apportion identically to LR-Hare. Other methods, including the widely used divisor methods such as the Webster/Sainte-Laguë method or the D'Hondt method minimize the Sainte-Laguë index instead.
The index is named after John Loosemore and Victor J. Hanby, who first published the formula in 1971 in a paper entitled "The Theoretical Limits of Maximum Distortion: Some Analytic Expressions for Electoral Systems". Along with Douglas W. Rae's, the formula is one of the two most cited disproportionality indices. |
Sic1 | Sic1, a protein, is a stoichiometric inhibitor of Cdk1-Clb (B-type cyclins) complexes in the budding yeast Saccharomyces cerevisiae. Because B-type cyclin-Cdk1 complexes are the drivers of S-phase initiation, Sic1 prevents premature S-phase entry. Multisite phosphorylation of Sic1 is thought to time Sic1 ubiquitination and destruction, and by extension, the timing of S-phase entry. |
Solar eclipse of June 20, 1974 | A total solar eclipse occurred on June 20, 1974. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. |
Comparison of browser synchronizers | The following tables compare general and technical information for a number of web-based browser synchronizers. Please see the individual products' articles for further information. Unless otherwise specified in footnotes, comparisons are based on the stable versions. |
Tongue diagnosis | Tongue diagnosis in Chinese Medicine is a method of diagnosing disease and disease patterns by visual inspection of the tongue and its various features. It is one of the major diagnostic methods in Chinese Medicine since the time of the Yellow Emperor's Inner Classic. It is considered a part of the “Inspection” method within the four methods of diagnosis. Practitioners claim that the tongue provides important clues reflecting the conditions of the internal organs. Like other diagnostic methods in Traditional Chinese Medicine, tongue diagnosis is based on the “outer reflects the inner” principle, which is that external structures often reflect the conditions of the internal structures and can give us important indications of internal disharmony. |
KNDy neuron | Kisspeptin, neurokinin B, and dynorphin (KNDy) neurons are neurons in the hypothalamus of the brain that are central to the hormonal control of reproduction.
KNDy neurons in the hypothalamus coexpress kisspeptin, neurokinin B (NKB) and dynorphin. They are involved in the negative feedback of gonadotropin-releasing hormone (GnRH) release in the hypothalamic–pituitary–gonadal (HPG) axis. Sex steroids released from the gonads act on KNDy neurons as inhibitors of kisspeptin release. This inhibition provides negative feedback control on the HPG axis. |
Folk psychology | In philosophy of mind and cognitive science, folk psychology, or commonsense psychology, is a human capacity to explain and predict the behavior and mental state of other people. Processes and items encountered in daily life such as pain, pleasure, excitement, and anxiety use common linguistic terms as opposed to technical or scientific jargon.Traditionally, the study of folk psychology has focused on how everyday people—those without formal training in the various academic fields of science—go about attributing mental states. This domain has primarily been centred on intentional states reflective of an individual's beliefs and desires; each described in terms of everyday language and concepts such as "beliefs", "desires", "fear", and "hope".Eliminative materialism is the claim that folk psychology is false and should be discarded (or "eliminated"). |
Japanese Pharmacopoeia | The Japanese Pharmacopoeia (日本薬局方) is the official pharmacopoeia of Japan. It is published by the Pharmaceuticals and Medical Devices Agency (独立行政法人 医薬品医療機器総合機構, Dokuritsu-gyōsei hōjin iyakuhin-iryō-kiki-sōgō-kikō). The first edition was published on 25 June 1886, with revisions being issued from time to time. The current revision is number 18, issued electronically on 7 June 2021. An official English translation is in preparation (status: 06 Aug 2021). |
Ore genesis | Various theories of ore genesis explain how the various types of mineral deposits form within Earth's crust. Ore-genesis theories vary depending on the mineral or commodity examined.
Ore-genesis theories generally involve three components: source, transport or conduit, and trap. (This also applies to the petroleum industry: petroleum geologists originated this analysis.) Source is required because metal must come from somewhere, and be liberated by some process.
Transport is required first to move the metal-bearing fluids or solid minerals into their current position, and refers to the act of physically moving the metal, as well as to chemical or physical phenomena which encourage movement.
Trapping is required to concentrate the metal via some physical, chemical, or geological mechanism into a concentration which forms mineable ore.The biggest deposits form when the source is large, the transport mechanism is efficient, and the trap is active and ready at the right time. |
Kōauau | A kōauau is a small flute, ductless and notchless, four to eight inches (ten to twenty centimetres) long, open at both ends and having from three to six fingerholes placed along the pipe. |
Environmental Fluid Mechanics | Environmental Fluid Mechanics is a bimonthly peer-reviewed scientific journal on Earth sciences published by Springer Science+Business Media. |
Oxford Formation | The Oxford Formation is a geologic formation in Ontario, Canada. It preserves fossils dating back to the Ordovician period. |
PRKACA | The catalytic subunit α of protein kinase A is a key regulatory enzyme that in humans is encoded by the PRKACA gene. This enzyme is responsible for phosphorylating other proteins and substrates, changing their activity. Protein kinase A catalytic subunit (PKA Cα) is a member of the AGC kinase family (protein kinases A, G, and C), and contributes to the control of cellular processes that include glucose metabolism, cell division, and contextual memory. PKA Cα is part of a larger protein complex that is responsible for controlling when and where proteins are phosphorylated. Defective regulation of PKA holoenzyme activity has been linked to the progression of cardiovascular disease, certain endocrine disorders and cancers. |
Simulcast | Simulcast (a portmanteau of simultaneous broadcast) is the broadcasting of programmes/programs or events across more than one resolution, bitrate or medium, or more than one service on the same medium, at exactly the same time (that is, simultaneously). For example, Absolute Radio is simulcast on both AM and on satellite radio. Likewise, the BBC's Prom concerts were formerly simulcast on both BBC Radio 3 and BBC Television. Another application is the transmission of the original-language soundtrack of movies or TV series over local or Internet radio, with the television broadcast having been dubbed into a local language. |
International Journal of Humanoid Robotics | The International Journal of Humanoid Robotics is a quarterly peer-reviewed scientific journal covering the development of intelligent humanoid robots, both theoretical and practical, with an emphasis on future projections. Some areas covered include design, mental architecture, kinematics, visual perception and human–robot interaction. It was established in 2004 and is published by World Scientific. The editors-in-chief are Ming Xie (Nanyang Technological University), Juyang Weng (Michigan State University), and Jean-Guy Fontaine (Istituto Italiano di Tecnologia). |
Endpaper | The endpapers or end-papers of a book (also known as the endsheets) are the pages that consist of a double-size sheet folded, with one half pasted against an inside cover (the pastedown), and the other serving as the first free page (the free endpaper or flyleaf). Thus, the front endpapers precede the title page and the text, whereas the back endpapers follow the text. Booksellers sometimes refer to the front endpaper as FEP. |
Isoliquiritigenin | Isoliquiritigenin is a phenolic chemical compound found in licorice. |
Hover cover | A hover cover is a specialised hovercraft used at major cricket grounds to cover and protect the cricket pitch from inclement weather, particularly showers of rain. The hover cover can be stored close to the edge of the cricket field, and when required can be moved over the pitch within minutes, and then removed easily when weather conditions improve. A hover cover can be used instead of more traditional wheeled covers, typically with a metal frame covered with fabric or metal, but two or three separate sections are necessary to cover the pitch completely, which take much longer and require more effort to push into place and remove. |
Rose position | Rose position is a position in which a patient is placed while undergoing a tonsillectomy, adenoidectomy or uvulopalatopharyngoplasty. |
Website defacement | Website defacement is an attack on a website that changes the visual appearance of a website or a web page. These are typically the work of defacers, who break into a web server and replace the hosted website with malware or a website of their own. Defacement is generally meant as a kind of electronic graffiti and, like other forms of vandalism, is used to spread messages by politically motivated "cyber protesters" or hacktivists. Website defacement can involve adding questionable content or removing or changing the content to make it questionable, or including nonsensical or whimsical references to websites or publicly editable repositories to harm its reputation. Methods such as a web shell may be used to aid in website defacement. |
Sleeper Either Class | A Sleeper Either class (SLE) and Sleeper Either class with Pantry (SLEP) are a type of railway sleeping car used in Great Britain. Some units were later modified for better wheelchair access as Sleeper Either class Disabled (SLED). A smaller number reused in Denmark were classified as WLABr.A total of 208 vehicles were built at Derby Litchurch Lane Works by British Rail Engineering Limited between 1982–1984 to the British Rail Mark 3A profile for British Rail. They were introduced to replace an ageing fleet of Mark 1 sleeper cars built to various designs and which dated from the late 1950s to early 1960s. The order consisted of 88 SLE variants, numbered 10646–10733, were constructed with thirteen bedrooms each, and 120 SLEP variants, numbered 10500–10619 constructed with twelve bedrooms with the last compartment used for an attendant. The Mark 3 air-conditioned sleeping cars were introduced including many additional safety features that had been lacking in the Mark 1 carriages that had caught fire at Taunton. The Night Riviera stock was the first on the route fitted with controlled emission toilets.As of October 2019, the only mainline operator of this type of carriages are Great Western Railway on the Night Riviera, whose fleet was refurbished in 2017.With the decline of overnight sleeper services in the United Kingdom shortly after their introduction at the end of the 1980s, many of the carriages later were moved to heritage railways to provide sleeping accommodation for heritage staff and volunteers. |
Glycoside hydrolase family 77 | In molecular biology, glycoside hydrolase family 77 is a family of glycoside hydrolases. |
Volcanic plateau | A volcanic plateau is a plateau produced by volcanic activity. There are two main types: lava plateaus and pyroclastic plateaus. |
Bit plane | A bit plane of a digital discrete signal (such as image or sound) is a set of bits corresponding to a given bit position in each of the binary numbers representing the signal.For example, for 16-bit data representation there are 16 bit planes: the first bit plane contains the set of the most significant bit, and the 16th contains the least significant bit. |
Octorad | Octorad is a term coined to describe a style of stadium architecture in the late 1960s. The term suggests eight radiuses, the design incorporating four arcs of a large circle to comprise most of the structure, and four arcs of a smaller circle to round out the corners. It was a variant on the archetypal multi-purpose stadiums of the time, many of which were either conventionally circular or oval, and were often criticized for poor sight line angles for many spectators at baseball and football games. |
Elsevier | Elsevier (Dutch: [ˈɛlzəviːr]) is a Dutch academic publishing company specializing in scientific, technical, and medical content. Its products include journals such as The Lancet, Cell, the ScienceDirect collection of electronic journals, Trends, the Current Opinion series, the online citation database Scopus, the SciVal tool for measuring research performance, the ClinicalKey search engine for clinicians, and the ClinicalPath evidence-based cancer care service. Elsevier's products and services include digital tools for data management, instruction, research analytics, and assessment.Elsevier is part of the RELX Group, known until 2015 as Reed Elsevier, a publicly-traded company. According to RELX reports, in 2022 Elsevier published more than 600,000 articles annually in over 2,800 journals; as of 2018 its archives contained over 17 million documents and 40,000 e-books, with over one billion annual downloads.Researchers have criticized Elsevier for its high profit margins and copyright practices. The company earned £942 million in profit with an adjusted operating margin of 37% in 2018. Much of the research that Elsevier publishes is publicly funded; its high costs have led to accusations of rent-seeking, boycotts, and the rise of alternate avenues for publication and access, such as preprint servers and shadow libraries. |
Bean bag round | A bean bag round, also known by its trademarked name flexible baton round, is a type of baton round, fired from a shotgun, and used for less lethal apprehension of suspects. |
Paczyński–Wiita potential | The Paczyński–Wiita potential is an approximation of the gravitational potential around a non-rotating black hole. It was introduced by Bohdan Paczyński and Paul Wiita in 1980. The article is one of the 40 most-cited from the first 40 years of the journal Astronomy & Astrophysics. The mathematical form of the potential is ΦPW(r)=−GMr−rS where r is the radial distance from the black hole, G is the gravitational constant, M is the mass of the black hole, and rS=2GM/c2 is its Schwarzschild radius. ( c is the speed of light.) The potential exactly reproduces the locations of the innermost stable circular orbit and the marginally bound orbit. It also exactly reproduces the form of the angular momentum distribution and accurately approximates the Keplerian angular velocity and epicyclic frequency. Because the Paczyński–Wiita potential reproduces these general relativistic effects and is easy to calculate, it is widely used in analytical studies and numerical simulations of black hole accretion. |
Schimmelbusch mask | The Schimmelbusch mask is an open breathing system for delivering an anesthetic. The device was invented by Curt Schimmelbusch in 1889, and was used until the 1950s (though it is still applied in some developing countries). The device consists of a wire frame which is covered with several beds of gauze and applied to the patient's face over the mouth and nose. Then high-volatility anesthetic (usually diethyl ether or halothane, and historically chloroform) is dripped on it, allowing the patient to inhale a mix of the evaporated anesthetic and air. The device is designed to prevent the anesthetic from coming in contact with the patient's skin, where it can cause irritation. |
Hysteroid dysphoria | Hysteroid dysphoria is a name given to repeated episodes of depressed mood in response to feeling rejected.Hysteroid dysphoria has been described in outpatient populations and is thought to be a subtype of atypical depression involving rejection sensitivity and therapeutic response to monoamine oxidase inhibitors.While some research shows that hysteroid dysphoria responds well to MAOIs, other research has suggested that the difference actually comes from the condition being less sensitive to tricyclic antidepressants.Other studies have examined the symptoms associated with hysteroid dysphoria and found that while the symptoms are observable, they are not unique or distinct enough to be considered their own condition. |
G protein-coupled receptor kinase 3 | G-protein-coupled receptor kinase 3 (GRK3) is an enzyme that in humans is encoded by the ADRBK2 gene. GRK3 was initially called Beta-adrenergic receptor kinase 2 (βARK-2), and is a member of the G protein-coupled receptor kinase subfamily of the Ser/Thr protein kinases that is most highly similar to GRK2. |
Peter Hedström | Peter Hedström is one of the founders of the field of analytical sociology. He has made contributions to the analysis of social contagion processes and complex social networks, as well as to the philosophical and meta-theoretical foundations of analytical sociology. He is one of the key contributors to the literature on social mechanisms. |
Reed switch | The reed switch is an electromechanical switch operated by an applied magnetic field. It was invented in 1922 by professor Valentin Kovalenkov at the Petrograd Electrotechnical University, and later evolved at Bell Telephone Laboratories in 1936 by Walter B. Ellwood into the reed relay. In its simplest and most common form, it consists of a pair of ferromagnetic flexible metal contacts in a hermetically sealed glass envelope. The contacts are usually normally open, closing when a magnetic field is present, or they may be normally closed and open when a magnetic field is applied. The switch may be actuated by an electromagnetic coil, making a reed relay, or by bringing a permanent magnet near it. When the magnetic field is removed, the contacts in the reed switch return to their original position. The "reed" is the metal part inside the reed switch envelope that is relatively thin and wide to make it flexible. It somewhat resembles part of some reed plants. The term "reed" may also include the external wire lead as well as the internal part.A common example of a reed switch application is to detect the opening of a door or windows, for a security alarm. |
Unistd.h | In the C and C++ programming languages, unistd.h is the name of the header file that provides access to the POSIX operating system API. It is defined by the POSIX.1 standard, the base of the Single Unix Specification, and should therefore be available in any POSIX-compliant operating system and compiler. For instance, this includes Unix and Unix-like operating systems, such as GNU variants, distributions of Linux and BSD, and macOS, and compilers such as GCC and LLVM. |
Bolast Formation | The Bolast Formation is a geologic formation in France. It preserves fossils dating back to the Devonian period. |
Hydrocodone/ibuprofen | Hydrocodone/ibuprofen (INNs), sold under the brand name Vicoprofen, is a fixed-dose combination analgesic medication used in short-term therapy to relieve severe pain. Vicoprofen combines the analgesic and antitussive properties of hydrocodone with the analgesic, anti-inflammatory, and antipyretic properties of ibuprofen. In contrast to hydrocodone/acetaminophen combination analgesics such as Vicodin, this hydrocodone/ibuprofen avoids some of the liver toxicity which may occur from acetaminophen, but still presents significant dangers in hydrocodone overdose, namely respiratory depression. Vicoprofen is supplied in a fixed dose combination tablet which contains hydrocodone bitartrate, USP 7.5 mg with ibuprofen, USP 200 mg. Additional strengths of generic Vicoprofen are now available, in combinations of 5 mg/200 mg and 10 mg/200 mg respectively. |
Tropical Storm Amy | The name Amy or Ami has been used for sixteen tropical cyclones worldwide: one in the Atlantic Ocean, two in the Australian region of the Indian Ocean, one in the South-West Indian Ocean, one in the South Pacific Ocean, and eleven in the Western Pacific Ocean. |
Aho–Corasick algorithm | In computer science, the Aho–Corasick algorithm is a string-searching algorithm invented by Alfred V. Aho and Margaret J. Corasick in 1975. It is a kind of dictionary-matching algorithm that locates elements of a finite set of strings (the "dictionary") within an input text. It matches all strings simultaneously. The complexity of the algorithm is linear in the length of the strings plus the length of the searched text plus the number of output matches. Note that because all matches are found, there can be a quadratic number of matches if every substring matches (e.g. dictionary = a, aa, aaa, aaaa and input string is aaaa). |
Slice of life | Slice of life is a depiction of mundane experiences in art and entertainment. In theater, slice of life refers to naturalism, while in literary parlance it is a narrative technique in which a seemingly arbitrary sequence of events in a character's life is presented, often lacking plot development, conflict and exposition, as well as often having an open ending. |
Daz (detergent) | Daz is the name of a laundry detergent on the market in the United Kingdom and Ireland. It was introduced in February 1953. It is manufactured by Procter & Gamble and is lower priced than P&G's main brand, Ariel. |
Friendly political wager | A friendly political wager is a largely symbolic form of sports betting made between politicians representing two cities or areas on the outcome of an important sports contest between teams representing those same two cities or areas. These wagers are most commonly made in the United States and Canada on the results of playoffs in the National Hockey League, National Football League and Major League Baseball as well as, on occasion, the Olympic Games. Although they are technically a form of gambling, friendly political wagers are generally tolerated by the sports leagues and regulatory authorities as harmless publicity stunts and gestures of regional pride. |
Transitus (education) | Transitus is the name given to a year in a number of independent schools in Scotland. As the name would suggest, this year is offered as a bridge between 'primary' and 'secondary' education.
Transitus replaces the final year of primary education used in state schools, often referred to as Primary 7 (P7). In preparatory schools, it may also share the 'P7' designation, although in this case it is instead the abbreviation of 'Prep'. |
Martin Greven | Martin Greven is a Distinguished McKnight University Professor at the University of Minnesota, specializing in experimental condensed matter physics. He is the Director of the University of Minnesota Center for Quantum Materials. His research group investigates quantum many-body phenomena in correlated-electron materials with spectroscopic, transport and other experimental methods. |
Pad abort test | A pad abort test is a test of a launch escape system to determine how well the system could get the crew of a spacecraft to safety in an emergency on the launch pad. |
Drive (charity) | In charitable organizations, a drive is a collection of items for people who need them, such as clothing, used items, books, canned food, cars, etc. Some drives are that people go through their inventory, bag the items up, and put them in a giveaway bin, or charitable organizations such as Big Brothers Big Sisters, The Salvation Army come to the house and pick them up. They then put the items in their thrift stores or, if they don't have any, sell them to thrift stores to raise money for their organization. |
Ejaculatory duct obstruction | Ejaculatory duct obstruction (EDO) is a pathological condition which is characterized by the obstruction of one or both ejaculatory ducts. Thus, the efflux of (most constituents of) semen is not possible. It can be congenital or acquired. It is a cause of male infertility and/or pelvic pain. Ejaculatory duct obstruction must not be confused with an obstruction of the vas deferens. |
Currency Symbols (Unicode block) | Currency Symbols is a Unicode block containing characters for representing unique monetary signs. Many currency signs can be found in other Unicode blocks, especially when the currency symbol is unique to a country that uses a script not generally used outside that country. |
Hydrogenated polydec-1-ene | Hydrogenated poly-1-decene is a colourless glazing agent. It is "a mixture of isoparaffinic molecules of known structure, prepared by hydrogenation of mixtures of tri-, tetra- penta- and hexa-1-decenes". It was reviewed in 2001 by the Scientific Committee on Food of the DG Health. It was "proposed as a substitute for white mineral oil. The food additive applications include those of glazing agent for confectionery and dried fruit, and processing aid uses as a lubricant and release agent, especially in bread baking using tins. It has been permitted for use in Finland, and a “Case of Need” has been accepted in the United Kingdom." The substance is a mix of inert saturated hydrocarbons, which are not easily metabolised. |
Hypertensive kidney disease | Hypertensive kidney disease is a medical condition referring to damage to the kidney due to chronic high blood pressure. It manifests as hypertensive nephrosclerosis (sclerosis referring to the stiffening of renal components). It should be distinguished from renovascular hypertension, which is a form of secondary hypertension, and thus has opposite direction of causation. |
Sphalerite | Sphalerite (sometimes spelled sphaelerite) is a sulfide mineral with the chemical formula (Zn,Fe)S. It is the most important ore of zinc. Sphalerite is found in a variety of deposit types, but it is primarily in sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide deposits. It is found in association with galena, chalcopyrite, pyrite (and other sulfides), calcite, dolomite, quartz, rhodochrosite, and fluorite.German geologist Ernst Friedrich Glocker discovered sphalerite in 1847, naming it based on the Greek word sphaleros, meaning "deceiving", due to the difficulty of identifying the mineral.In addition to zinc, sphalerite is an ore of cadmium, gallium, germanium, and indium. Miners have been known to refer to sphalerite as zinc blende, black-jack, and ruby blende. Marmatite is an opaque black variety with a high iron content. |
Landau reflex | Landau reflex or Landau reaction refers to a reflex seen in infants when held horizontally in the air in the prone position. It emerges 3 months after birth and lasts until up to 12 months to 24 months of age. A normal response of infants when held in a horizontal prone position is to maintain a convex arc with the head raised and the legs slightly flexed. It is poor in those with floppy infant syndrome and exaggerated in hypertonic and opisthotonic infants. |
Slurry transport | Slurry transport uses several methods: hydraulic conveying; conventional lean slurry conveying; and high concentration slurry disposal (HCSD). The latter, HCSD, is a relatively modern approach, which is used to transfer high throughputs of fine fly ash over long distances (>10 km or 6.2 mi) using high pressure diaphragm pumps with velocities of around 2 m/s. Ash disposal is simple as the ash solidifies easily and the system does not produce the waste water or leachate problems which can often be associated with ash lagoons. |
Villin-1 | Villin-1 is a 92.5 kDa tissue-specific actin-binding protein associated with the actin core bundle of the brush border. Villin-1 is encoded by the VIL1 gene. Villin-1 contains multiple gelsolin-like domains capped by a small (8.5 kDa) "headpiece" at the C-terminus consisting of a fast and independently folding three-helix bundle that is stabilized by hydrophobic interactions. The headpiece domain is a commonly studied protein in molecular dynamics due to its small size and fast folding kinetics and short primary sequence. |
KG-84 | The KG-84A and KG-84C are encryption devices developed by the U.S. National Security Agency (NSA) to ensure secure transmission of digital data. The KG-84C is a Dedicated Loop Encryption Device (DLED), and both devices are General-Purpose Telegraph Encryption Equipment (GPTEE). The KG-84A is primarily used for point-to-point encrypted communications via landline, microwave, and satellite systems. The KG-84C is an outgrowth of the U.S. Navy high frequency (HF) communications program and supports these needs. The KG-84A and KG-84C are devices that operate in simplex, half-duplex, or full-duplex modes. The KG-84C contains all of the KG-84 and KG-84A modes, plus a variable update counter, improved HF performance, synchronous out-of-sync detection, asynchronous cipher text, plain text, bypass, and European TELEX protocol. The KG-84 (A/C) is certified to handle data at all levels of security. The KG-84 (A/C) is a Controlled Cryptographic Item (CCI) and is unclassified when unkeyed. Keyed KG-84 equipment assumes the classification level equal to that of the keying material used. |
Immunology Letters | Immunology Letters is a peer-reviewed academic journal of immunology. The journal was established in 1979 and is published by Elsevier on behalf of the European Federation of Immunological Societies on a monthly basis. The current editor is Vaclav Horejsi. |
Gliese 876 e | Gliese 876 e is an exoplanet orbiting the star Gliese 876 in the constellation of Aquarius. It is in a 1:2:4 Laplace resonance with the planets Gliese 876 c and Gliese 876 b: for each orbit of planet e, planet b completes two orbits and planet c completes four. This configuration is the second known example of a Laplace resonance after Jupiter's moons Io, Europa and Ganymede. Its orbit takes 124 days to complete. |
4DX | 4DX is a 4D film presentation system developed by CJ 4DPlex, a subsidiary of South Korean cinema chain CJ CGV. It allows films to be augmented with various practical effects, including motion-seats, wind, strobe-lights, simulated-snow, and scents. First introduced commercially in 2009, it presents films in both stereoscopic 3-D and monoscopic 2-D formats.CJ has licensed the technology worldwide. As of September 2019, CJ 4DPlex operates 678 4DX theaters in 65 countries through partnerships with more than 80 theaters, including Wanda Cinemas, Cineworld, Regal Cinemas, Kinepolis, Cinépolis, Event Cinemas, Village Cinemas, and Nu Metro. The company recorded an annual growth rate of more than 50 percent from 2013 to 2018. |
Fungal prion | A fungal prion is a prion that infects hosts which are fungi. Fungal prions are naturally occurring proteins that can switch between multiple, structurally distinct conformations, at least one of which is self-propagating and transmissible to other prions. This transmission of protein state represents an epigenetic phenomenon where information is encoded in the protein structure itself, instead of in nucleic acids. Several prion-forming proteins have been identified in fungi, primarily in the yeast Saccharomyces cerevisiae. These fungal prions are generally considered benign, and in some cases even confer a selectable advantage to the organism.Fungal prions have provided a model for the understanding of disease-forming mammalian prions. Study of fungal prions has led to a characterisation of the sequence features and mechanisms that enable prion domains to switch between functional and amyloid-forming states. |
N conjecture | In number theory the n conjecture is a conjecture stated by Browkin & Brzeziński (1994) as a generalization of the abc conjecture to more than three integers. |
Nodal homolog | Nodal homolog is a secretory protein that in humans is encoded by the NODAL gene which is located on chromosome 10q22.1. It belongs to the transforming growth factor beta superfamily (TGF-β superfamily). Like many other members of this superfamily it is involved in cell differentiation in early embryogenesis, playing a key role in signal transfer from the primitive node, in the anterior primitive streak, to lateral plate mesoderm (LPM).Nodal signaling is important very early in development for mesoderm and endoderm formation and subsequent organization of left-right axial structures. In addition, Nodal seems to have important functions in neural patterning, stem cell maintenance and many other developmental processes, including left/right handedness. |
Periodontal disease | Periodontal disease, also known as gum disease, is a set of inflammatory conditions affecting the tissues surrounding the teeth. In its early stage, called gingivitis, the gums become swollen and red and may bleed. It is considered the main cause of tooth loss for adults worldwide. In its more serious form, called periodontitis, the gums can pull away from the tooth, bone can be lost, and the teeth may loosen or fall out. Bad breath may also occur.Periodontal disease is generally due to bacteria in the mouth infecting the tissue around the teeth. Factors that increase the risk of disease include smoking, diabetes, HIV/AIDS, family history, and certain medications. Diagnosis is by inspecting the gum tissue around the teeth both visually and with a probe and X-rays looking for bone loss around the teeth.Treatment involves good oral hygiene and regular professional teeth cleaning. Recommended oral hygiene include daily brushing and flossing. In certain cases antibiotics or dental surgery may be recommended. Clinical investigations demonstrate that quitting smoking and making dietary changes enhance periodontal health. Globally 538 million people were estimated to be affected in 2015 and has been known to affect 10–15% of the population generally. In the United States nearly half of those over the age of 30 are affected to some degree, and about 70% of those over 65 have the condition. Males are affected more often than females. |
Certance | Certance, LLC, was a privately held company engaged in design and manufacture of computer tape drives. Based in Costa Mesa, California, Certance designed and manufactured drives using a variety of tape formats, including Travan, DDS, and Linear Tape-Open computer tape drives. Certance was one of the three original technology partners, (Certance, IBM, and Hewlett-Packard), that created the Linear Tape-Open technology. In 2005, Certance was acquired by Quantum Corporation. |
Zeroth-order logic | Zeroth-order logic is a branch of logic without variables or quantifiers. Some authors use the phrase "zeroth-order logic" as a synonym for the propositional calculus, but an alternative definition extends propositional logic by adding constants, operations, and relations on non-Boolean values. Every zeroth-order language in this broader sense is complete and compact. |
Position line | A position line or line of position (LOP) is a line (or, on the surface of the earth, a curve) that can be both identified on a chart (nautical chart or aeronautical chart) and translated to the surface of the earth. The intersection of a minimum of two position lines is a fix that is used in position fixing to identify a navigator's location. |
Through line | A through line is a connecting theme or plot used in media such as films and books. It is sometimes also called the 'spine', and was first suggested by Konstantin Stanislavski as a simplified way for actors to think about characterization. He believed actors should not only understand what their character was doing, or trying to do (their objective), in any given unit, but should also strive to understand the through line that linked these objectives together and thus pushed the character forward through the narrative. |
Audio tour | An audio tour or audio guide provides a recorded spoken commentary, normally through a handheld device, to a visitor attraction such as a museum. They are also available for self-guided tours of outdoor locations, or as a part of an organised tour. It provides background, context, and information on the things being viewed. Audio guides are often in multilingual versions and can be made available in different ways. Some of the more elaborate tours may include original music and interviews. They are traditionally rented on the spot, more recently downloaded from the Internet, or available via the mobile phone network. Some audio guides are free or included in the entrance fee, others have to be purchased separately. |
Constantan | Constantan is a proprietary name for a copper–nickel alloy also known as Eureka, Advance, and Ferry. It usually consists of 55% copper and 45% nickel. Its main feature is the low thermal variation of its resistivity, which is constant over a wide range of temperatures. Other alloys with similarly low temperature coefficients are known, such as manganin (Cu [86%] / Mn [12%] / Ni [2%] ). |
Admittance parameters | Admittance parameters or Y-parameters (the elements of an admittance matrix or Y-matrix) are properties used in many areas of electrical engineering, such as power, electronics, and telecommunications. These parameters are used to describe the electrical behavior of linear electrical networks. They are also used to describe the small-signal (linearized) response of non-linear networks. Y parameters are also known as short circuited admittance parameters. They are members of a family of similar parameters used in electronic engineering, other examples being: S-parameters, Z-parameters, H-parameters, T-parameters or ABCD-parameters. |
GNU Compiler for Java | The GNU Compiler for Java (GCJ) is a discontinued free compiler for the Java programming language. It was part of the GNU Compiler Collection.GCJ compiles Java source code to Java virtual machine (JVM) bytecode or to machine code for a number of CPU architectures. It could also compile class files and whole JARs that contain bytecode into machine code. |
IEFBR14 | IEFBR14 is an IBM mainframe utility program. It runs in all IBM mainframe environments derived from OS/360, including z/OS. It is a placeholder that returns the exit status zero, similar to the true command on UNIX-like systems. |
Group Shot | Group Shot is a photo combining program developed by Microsoft Research. Its purpose is to solve the problem of individuals in group photographs that might be doing undesirable things such as looking elsewhere, closing their eyes, not smiling, etc. The principle of Group Shot is that multiple group photographs will be taken in each session. Multiple images from a session are loaded into the application, and then the user selects the best parts from all of the different photos and merges them into one. |
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