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Domain Randomization (DR) is known to require a significant amount of
training data for good performance. We argue that this is due to DR's strategy
of random data generation using a uniform distribution over simulation
parameters, as a result, DR often generates samples which are uninformative for
the learner. In this work, we theoretically analyze DR using ideas from
multi-source domain adaptation. Based on our findings, we propose Adversarial
Domain Randomization (ADR) as an efficient variant of DR which generates
adversarial samples with respect to the learner during training. We implement
ADR as a policy whose action space is the quantized simulation parameter space.
At each iteration, the policy's action generates labeled data and the reward is
set as negative of learner's loss on this data. As a result, we observe ADR
frequently generates novel samples for the learner like truncated and occluded
objects for object detection and confusing classes for image classification. We
perform evaluations on datasets like CLEVR, Syn2Real, and VIRAT for various
tasks where we demonstrate that ADR outperforms DR by generating fewer data
samples.
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We show how to compute the Lagrangian Floer homology in the one-point blow up
of the proper transform of Lagrangians submanifolds, solely in terms of
information of the base manifold. As an example we present an alternative
computation of the Lagrangian quantum homology in the one-point blow up of
(CP^2,\omega) of the proper transform of the Clifford torus.
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Bette Midler is indescribable in this concert. She gives her all every time she is on stage. Whether we are laughing at her jokes and antics or dabbing our eyes at the strains of one of her tremendous ballads, Bette Midler moves her audience. If you can't see it live (which is the best way to see Bette) then this is the next best thing. An interesting thing to look at is how incredible her voice has changed and matured over the years but never lost its power. Her more "vocally correct" version of "Stay With Me" never loses anything in spirit from THE ROSE or DIVINE MADNESS, Here it is just more pure and as heartfelt as ever. I will treasure this concert for a very long time.
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In a recent work, B\"ol and Reese have introduced a discrete model for
polymer networks by means of a finite element modeling. They have also provided
a comparison with real experiments. A key parameter of their model is the size
h of the finite element mesh, that is meant to be small in practice. The aim of
the present work is to study the asymptotic behaviour (and the convergence of
the finite element method) when the meshsize goes to zero. In particular, we
address the properties satisfied by the model at the limit, depending on the
properties of the mesh.
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This paper is concerned with strong blow-up instability (Definition 1.3) for
standing wave solutions to the system of the quadratic nonlinear Klein-Gordon
equations. In the single case, namely the nonlinear Klein-Gordon equation with
power type nonlinearity, stability and instability for standing wave solutions
have been extensively studied. On the other hand, in the case of our system,
there are no results concerning the stability and instability as far as we
know. In this paper, we prove strong blow-up instability for the standing wave
to our system. The proof is based on the techniques in Ohta and Todorova [25].
It turns out that we need the mass resonance condition in two or three space
dimensions whose cases are the mass-subcritical case.
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The Government is to commemorate those who served in the Royal Irish Constabulary (RIC) and the Dublin Metropolitan Police (DMP) prior to independence.
The event, part of the State programme to mark the decade of centenaries, will take place in Dublin Castle on January 17th will be addressed by Minister for Justice Charlie Flanagan and Garda Commissioner Drew Harris.
The RIC was established in 1836 and disbanded after Irish independence in 1922. It operated in all parts of Ireland except in Dublin, where the DMP was the police force during the same period.
Mr Flanagan in September became the first government minister to attend a commemoration service for policemen killed by the IRA in the War of Independence.
Ministers have traditionally shied away from such services because of the role of both forces in opposing those who sought Irish independence through armed actions.
The armed RIC was in the vanguard of British resistence to the IRA during the War of Independence causing thousands to quit the force. Dáil Éireann organised a boycott of the force from April 1919 on and the mass burning of RIC barracks began in January 1920.
When the British government realised the RIC was not up to the task of defending British rule in Ireland, they drafted in the Black and Tans and Auxiliaries, mercenary soldiers from Britain, to take the fight to the IRA.
In September, Mr Flanagan was a guest at the annual interdenominational service for members of the RIC and DMP held at the Church of St Paul of the Cross in Mount Argus in Dublin.
Taoiseach Leo Varadkar was represented by his aide-de-camp Commandant Caroline Burke at the service.
The names of 11 RIC and four DMP men killed in 1919 during the first year of the War of Independence were read out.
Speaking to The Irish Times after the service, Mr Flanagan said he attended because the policemen involved were “doing their job. They were murdered in the line of duty.
“They were doing what police officers do. As they saw it they were protecting communities from harm. They were maintaining the rule of law. These are fundamental to police services everywhere.”
Mr Flanagan described himself as a “pluralist who believes in the co-existence of peoples of different traditions on the island coming together.
“As Minister for Justice, I acknowledge that being a policeman is a very tough job. The men that we commemorated were all killed in the line of duty.”
He added: “I believe very strongly in the spirit of the Good Friday Agreement and, in the spirit of co-existence. These are sensitive ceremonies and they are very important to me.
“The fundamental basis of the Good Friday Agreement brings people together. I see the fundamental principle of Brexit being the opposite.
“These are difficult and sensitive issues. We cannot any longer ignore them or be partisan. I believe I have a duty as Minister for Justice to police officers.”
The decision by the State to hold a service to remember the RIC and DMP has been welcomed by the Historical & Reconciliatory Police (HARP) Society set up in 2012 to remember Irish policemen killed on duty between 1836 and 1922 of whom 525 were killed during the War of Independence.
Spokesman Jim Herlihy said: “The Harp Society are delighted with the initiative now taken by Government in at long last hosting the forthcoming event in Dublin Castle and are also in hope that such an event will lead to the provision of a fitting permanent memorial to commemorate the sacrifice made by the 642 members of Royal Irish Constabulary and the 30 members of the Dublin Metropolitan Police between 1836 and 1922.”
Mr Herlihy said his extensive research over the last number of years reveals that 10,936 Black and Tans and 2,264 Auxiliaries served in Ireland during the War of Independence.
Of those, 152 Black and Tans and 44 Auxilaries were killed.
His research also reveals that 883 Black and Tans were Irish-born and 126 Auxilaries were Irish.
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With developments going from bad to worse for the Iranian regime, the mullahs have decided to play a 40 year-old card. They have orchestrated an attack on a U.S. embassy, this time the one in Baghdad.
President Trump summarized the situation in this tweet:
Iran killed an American contractor, wounding many. We strongly responded, and always will. Now Iran is orchestrating an attack on the U.S. Embassy in Iraq. They will be held fully responsible. In addition, we expect Iraq to use its forces to protect the Embassy, and so notified.
Trump’s expectation of protection from the Iraqi government may be too optimistic. Indeed, Trump seems to recognize this. Reportedly, he is sending additional forces to keep U.S. personnel in Iraq safe.
According to CNN, the number of troops will initially be less than a 1,000. A larger force of several thousand soldiers has also been placed on stand-by and could also be deployed to the region if the need arises.
Let’s hope that Trump is able to avoid an embassy takeover or similar disaster. And if there is an embassy takeover, let’s hope that Trump handles it a whole lot better than Jimmy Carter did 40 years ago.
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We are concerned with the existence of global in time solutions to the Cauchy
problem for semi-linear Klein-Gordon equations with memory-type dissipation in
$\mathbb{R}^n$. In the first place, we consider the linearized equation:
applying the energy method in the Fourier space, we derive the point-wise
estimate of a solution in the Fourier space. However, we found that the
function in energy estimates has a mistake.
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We develope $\mathbb{C}^{\ast}$-equivariant categorical Donaldson-Thomas
theory for local surfaces, i.e. the total spaces of canonical line bundles on
smooth projective surfaces. We introduce $\mathbb{C}^{\ast}$-equivariant DT
categories for local surfaces as Verdier quotients of derived categories of
coherent sheaves on derived moduli stacks of coherent sheaves on surfaces, by
subcategories of objects whose singular supports are contained in unstable
loci. Via Koszul duality, our construction may be regarded as certain gluing of
$\mathbb{C}^{\ast}$-equivariant derived categories of factorizations.
We also develope $\mathbb{C}^{\ast}$-equivariant DT theory for stable
D0-D2-D6 bound states on local surfaces, including categorical
Pandharipande-Thomas theory. The key result toward the construction is the
description of the stack of D0-D2-D6 bound states on the local surface as the
dual obstruction cone over the moduli stack of pairs on the surface. We propose
several conjectures on wall-crossing of PT categories, motivated by
categorifications of wall-crossing formula of PT invariants and d-critical
analogue of D/K equivalence conjecture in birational geometry.
We establish three ways toward the categorical wall-crossing conjecture:
semiorthogonal decomposition via linear Koszul duality, window theorem for DT
categories, and categorified Hall products. These techniques indicate several
implications, e.g. rationality of generating series of PT categories,
wall-crossing equivalence of DT categories for one dimensional stable sheaves,
and categorical MNOP/PT correspondence for reduced curve classes.
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Keeps randomly disconnecting.
I liked Jam Bluetooth speakers, however recently my old one had been randomly disconnecting in the middle of my music. Thinking it just my speaker, I purchased the Jam Classic. However I still have the same problem. I do not have this problem with other bluetooth speakers. Dispite this problem, speaker is easy to use & very nice volume for the size!
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Molybdenum disulfide (MoS$_2$) is one of the most broadly utilized solid
lubricants with a wide range of applications, including but not limited to
those in the aerospace/space industry. Here we present a focused review of
solid lubrication with MoS$_2$ by highlighting its structure, synthesis,
applications and the fundamental mechanisms underlying its lubricative
properties, together with a discussion of their environmental and temperature
dependence. An effort is made to cover the main theoretical and experimental
studies that constitute milestones in our scientific understanding. The review
also includes an extensive overview of the structure and tribological
properties of doped MoS$_2$, followed by a discussion of potential future
research directions.
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In this article, we propose a simple method to perform variable selection as
a post model-fitting exercise using continuous shrinkage priors such as the
popular horseshoe prior. The proposed Signal Adaptive Variable Selector (SAVS)
approach post-processes a point estimate such as the posterior mean to group
the variables into signals and nulls. The approach is completely automated and
does not require specification of any tuning parameters. We carried out a
comprehensive simulation study to compare the performance of the proposed SAVS
approach to frequentist penalization procedures and Bayesian model selection
procedures. SAVS was found to be highly competitive across all the settings
considered, and was particularly found to be robust to correlated designs. We
also applied SAVS to a genomic dataset with more than 20,000 covariates to
illustrate its scalability.
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Being able to see beyond the direct line of sight is an intriguing
prospective and could benefit a wide variety of important applications. Recent
work has demonstrated that time-resolved measurements of indirect diffuse light
contain valuable information for reconstructing shape and reflectance
properties of objects located around a corner. In this paper, we introduce a
novel reconstruction scheme that, by design, produces solutions that are
consistent with state-of-the-art physically-based rendering. Our method
combines an efficient forward model (a custom renderer for time-resolved
three-bounce indirect light transport) with an optimization framework to
reconstruct object geometry in an analysis-by-synthesis sense. We evaluate our
algorithm on a variety of synthetic and experimental input data, and show that
it gracefully handles uncooperative scenes with high levels of noise or
non-diffuse material reflectance.
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Hundreds of millions of structured proteins sustain life through chemical interactions and catalytic reactions1. Though dynamic, these proteins are assumed to be built upon fixed scaffolds of secondary structure, -helices and {beta}-sheets. Experimentally determined structures of over >58,000 non-redundant proteins support this assumption, though it has recently been challenged by [~]100 fold-switching proteins2. These "metamorphic3" proteins, though ostensibly rare, raise the question of how many uncharacterized proteins have shapeshifting-rather than fixed-secondary structures. To address this question, we developed a comparative sequence-based approach that predicts fold-switching proteins from differences in secondary structure propensity. We applied this approach to the universally conserved NusG transcription factor family of [~]15,000 proteins, one of which has a 50-residue regulatory subunit experimentally shown to switch between -helical and {beta}-sheet folds4. Our approach predicted that 25% of the sequences in this family undergo similar -helix {rightleftharpoons} {beta}-sheet transitions, a frequency two orders of magnitude larger than previously observed. Our predictions evade state-of-the-art computational methods but were confirmed experimentally by circular dichroism and nuclear magnetic resonance spectroscopy for all 10 assiduously chosen dissimilar variants. These results suggest that fold switching is a pervasive mechanism of transcriptional regulation in all kingdoms of life and imply that numerous uncharacterized proteins may also switch folds.
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10yo loves it wish it was 2 player or more
Got this for my 10-year-old daughter so they have something to do when her friend sleepover the girls all love it and it’s fun to be able to make your own monster high girl I just wish it was multiplayer so all the girls could play together instead of arguing over who gets it next .
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We study the dissipative dynamics of neutral atoms in anisotropic harmonic
potentials, immersed in a reservoir species that is not trapped by the harmonic
potential. Considering initial motional excitation of the atoms along one
direction, we explore the resulting spontaneous emission of reservoir
excitations, across a range of trap parameters from strong to weak radial
confinement. In different limits these processes are useful as a basis for
analogies to laser cooling, or as a means to introduce controlled dissipation
to many-body dynamics. For realistic experimental parameters, we analyse the
distribution of the atoms during the decay and determine the effects of heating
arising from a finite temperature reservoir.
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We introduce the first work to tackle the image retrieval problem as a
continuous operation. While the proposed approaches in the literature can be
roughly categorized into two main groups: category- and instance-based
retrieval, in this work we show that the retrieval task is much richer and more
complex. Image similarity goes beyond this discrete vantage point and spans a
continuous spectrum among the classical operating points of category and
instance similarity. However, current retrieval models are static and incapable
of exploring this rich structure of the retrieval space since they are trained
and evaluated with a single operating point as a target objective. Hence, we
introduce a novel retrieval model that for a given query is capable of
producing a dynamic embedding that can target an arbitrary point along the
continuous retrieval spectrum. Our model disentangles the visual signal of a
query image into its basic components of categorical and attribute information.
Furthermore, using a continuous control parameter our model learns to
reconstruct a dynamic embedding of the query by mixing these components with
different proportions to target a specific point along the retrieval simplex.
We demonstrate our idea in a comprehensive evaluation of the proposed model and
highlight the advantages of our approach against a set of well-established
discrete retrieval models.
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Choice functions accept a set of alternatives as input and produce a
preferred subset of these alternatives as output. We study the problem of
learning such functions under conditions of context-dependence of preferences,
which means that the preference in favor of a certain choice alternative may
depend on what other options are also available. In spite of its practical
relevance, this kind of context-dependence has received little attention in
preference learning so far. We propose a suitable model based on
context-dependent (latent) utility functions, thereby reducing the problem to
the task of learning such utility functions. Practically, this comes with a
number of challenges. For example, the set of alternatives provided as input to
a choice function can be of any size, and the output of the function should not
depend on the order in which the alternatives are presented. To meet these
requirements, we propose two general approaches based on two representations of
context-dependent utility functions, as well as instantiations in the form of
appropriate end-to-end trainable neural network architectures. Moreover, to
demonstrate the performance of both networks, we present extensive empirical
evaluations on both synthetic and real-world datasets.
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My comments are late because I only stumbled onto this ill conceived and poorly executed piece by accident.
Call me stupid if you like, but I don't see how you say the following: "This media-created narrative threatens and undermines the integrity of SARS, for example, to focus on its core mandate of revenue collection to enhance implementation of government programmes to the disadvantaged majority of this country."
How does media coverage threaten SARS integrity, if what the media does, is question SARS actions and the actions of its leader, and in-actions where action is critical? How does media coverage threaten or undermine SARS integrity to focus on its mandate? If SARS and Moyane's actions demonstrate that it is more important to play political games than to focus on its mandate, then by all means, I think, SOMEONE should focus on SARS' mandate and be commended for the public service they perform. So, thank you, to the media, for focussing on SARS' mandate!!!
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Initially liked the product, but did not last.
At first I loved this band, but after daily wear for three months it needs to be replaced. The strap has started to wear and no longer looks nice. I initially loved this band, however I will be shopping for a different one that will last longer. Even at a low price point I expected to get more than three months wear.
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We present the results of our detailed pseudospectral direct numerical
simulation (DNS) studies, with up to $1024^3$ collocation points, of
incompressible, magnetohydrodynamic (MHD) turbulence in three dimensions,
without a mean magnetic field. Our study concentrates on the dependence of
various statistical properties of both decaying and statistically steady MHD
turbulence on the magnetic Prandtl number ${\rm Pr_M}$ over a large range,
namely, $0.01 \leq {\rm Pr_M} \leq 10$. We obtain data for a wide variety of
statistical measures such as probability distribution functions (PDFs) of
moduli of the vorticity and current density, the energy dissipation rates, and
velocity and magnetic-field increments, energy and other spectra, velocity and
magnetic-field structure functions, which we use to characterise intermittency,
isosurfaces of quantities such as the moduli of the vorticity and current, and
joint PDFs such as those of fluid and magnetic dissipation rates. Our
systematic study uncovers interesting results that have not been noted
hitherto. In particular, we find a crossover from larger intermittency in the
magnetic field than in the velocity field, at large ${\rm Pr_M}$, to smaller
intermittency in the magnetic field than in the velocity field, at low ${\rm
Pr_M}$. Furthermore, a comparison of our results for decaying MHD turbulence
and its forced, statistically steady analogue suggests that we have strong
universality in the sense that, for a fixed value of ${\rm Pr_M}$, multiscaling
exponent ratios agree, at least within our errorbars, for both decaying and
statistically steady homogeneous, isotropic MHD turbulence.
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In this paper, nominal compositions of NdFeAsO0.8F0.2,
NdFeAs0.95Sb0.05O0.8F0.2 and NdFeAs0.95P0.05O0.8F0.2 were prepared by one step
solid state reaction method. The structural, electrical and morphological
properties of samples were characterized through the XRD pattern, the 4 probe
method and SEM, respectively. The crystal structure of our samples was
tetragonal with P4/nmm:2 symmetry group. Also, the (x, y, z) and occupancy of
ions and lattice parameters were changed by isovalent substitution of
Phosphorus P and Antimony Sb in the NdFeAsO0.8F0.2 sample. The alfa and beta
bond angles and Fe-As bond length are changed from the corresponding value of
alfa and beta regular FeAs4 tetrahedron by isovalent doping p/As and Sb/As,
that they are effective on the superconductivity transition temperature. The
microstrain and crystalline size of samples were studied by the Williamson Hall
method. The superconducting critical temperatures were attained at 56K and 46K
for NdFeAsO0.8F0.2, NdFeAs0.95Sb0.05O0.8F0.2, respectively. The
NdFeAs0.95P0.05O0.8F0.2 showed the structural transition temperature at 140K.
It seems that there is a relation between the superconductivity and shrinkage
of the crystal lattice. The flake type of grains was observed by SEM pictures
of samples.
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The Simons Observatory (SO) will make precision temperature and polarization
measurements of the cosmic microwave background (CMB) over angular scales
between 1 arcminute and tens of degrees using over 60,000 detectors and
sampling frequencies between 27 and 270 GHz. SO will consist of a
six-meter-aperture telescope coupled to over 30,000 detectors and an array of
half-meter aperture refractive cameras, coupled to an additional 30,000+
detectors. The unique combination of large and small apertures in a single CMB
observatory will allow us to sample a wide range of angular scales over a
common survey area while providing an important stepping stone towards the
realization of CMB-Stage IV. CMB-Stage IV is a proposed project that will
combine and expand on existing facilities in Chile and Antarctica to reach the
~500,000 detectors required for CMB-Stage IV's science objectives. SO and
CMB-Stage IV will measure fundamental cosmological parameters of our universe,
constrain primordial fluctuations, find high redshift clusters via the
Sunyaev-Zeldovich effect, constrain properties of neutrinos, and trace the
density and velocity of the matter in the universe over cosmic time. The
complex set of technical and science requirements for SO has led to innovative
instrumentation solutions which we will discuss. For instance, the SO large
aperture telescope will couple to a cryogenic receiver that is 2.4 m in
diameter and 2.4 m long. We will give an overview of the drivers for and
designs of the SO telescopes and cameras as well as the current status of the
project. We will also discuss the current status of CMB-Stage IV and important
next steps in the project's development.
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Meal time at Alynn Casgrain's home requires some co-ordination.
While her 11-month-old twin boys, Sam and Jake, wait patiently in their high chairs, four-year-old big sister Noelle cuts the vegetables for a pizza the whole family will soon be eating.
Casgrain and her husband, David Upper, believe their children should eat the same things they eat. That's because the Toronto mom was surprised by the added sugars she found in products designed for infants and toddlers.
"Those yogurt drinks were shocking. Low fat, all sugar," said Casgrain.
A recent study published in the Journal of the Academy of Nutrition and Dietetics backs that up. It found that nearly 61 per cent of infants (6-11 months) and 98 per cent of toddlers (12-23 months) consumed added sugars as part of an average daily diet.
The added sugars were mainly found in flavoured yogurts and fruit drinks.
"We wanted to understand what the consumption of added sugars were among infants and toddlers. It's a group that's not very well studied, so we wanted to add to the research base," said lead investigator Kirsten Herrick, with the U.S. National Cancer Institute in Bethesda, Md.
Nutrition experts warn us to try to limit our intake of added sugars, but they are everywhere: in breakfast cereals, baked goods, even yogurt and pasta sauces. (Jonathan Hayward/Canadian Press)
Herrick's team analyzed data from 1,211 young children. They found that infants consumed about one teaspoon of added sugars daily; toddlers consumed about six teaspoons.
Experts, including the World Health Organization, say children should consume no more than six teaspoons of added sugar daily — an amount equal to about 25 grams.
"What was surprising was how early added sugar consumption started and how quickly it increased,'' she said.
'Kids eat like we do'
Herrick describes added sugars as an extra amount of sweetener that's added to any food product. It could be table sugar, honey, maple syrup or fruit concentrate. And it's "everywhere in the food system," she said, from fruit drinks and baked goods, to yogurts.
Jess Haines, an associate professor of applied nutrition at the University of Guelph, isn't surprised by the findings.
"Kids eat like we do. And adults, both in the U.S and Canada, we eat a fair bit of sugar," she said.
Haines said the university came to similar conclusions in its long-term Guelph Family Health Study, where researchers looked at various routines of children between 18 months and five years of age. When it came to diet, it found that 54 per cent of them exceeded the six teaspoons of sugar per day.
Jess Haines is an associate professor of applied nutrition at the University of Guelph. (Craig Chivers/CBC)
Haines says that all this added sugar can have long-term health effects, starting with cavities.
"We also see that when kids have higher intakes of sugar that's sustained over their lifetime, we can see an increased risk for cardiovascular disease, Type 2 diabetes later in life."
As a parent herself, Haines understands that many babies and toddlers can be picky eaters. She also knows the time constraints many mothers and fathers face during the day, so she tries to recommend solutions that involve re-imagining what a snack can look like.
"Think of snacks, really, as mini-meals. Why not take some of the foods that you've had for either breakfast or lunch, make it smaller and they can have a snack like that during the day," she said.
Alynn Casgrain agrees. She and her husband try to control the added sugar intake of their children, particularly at home, by making much of their food from scratch.
Casgrain hopes this will lay the groundwork for healthy eating decisions later in life — but she knows it won't be easy.
"You have to be realistic about the fact that wherever they go, whether they're going to see friends or grandparents or when they get older and make their own decisions, there's going to be sweet stuff in front of them."
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Dangerous!!! Do not use!!!
I bought about 12 different sized and colored dildos for a bachelorette party in November. I just opened the box and noticed that there was mystery sticky black liquid all over everything. I bought one of these in black and the other in purple. Both melted!!!!! These were stored in my room and not stored in any extreme temperature. These were for bachelorette party decorations and games. I would never put these near the lady parts. Very dangerous!!! Please do not order these!!
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In this paper, we study the graph-based semi-supervised learning for
classifying nodes in attributed networks, where the nodes and edges possess
content information. Recent approaches like graph convolution networks and
attention mechanisms have been proposed to ensemble the first-order neighbors
and incorporate the relevant neighbors. However, it is costly (especially in
memory) to consider all neighbors without a prior differentiation. We propose
to explore the neighborhood in a reinforcement learning setting and find a walk
path well-tuned for classifying the unlabelled target nodes. We let an agent
(of node classification task) walk over the graph and decide where to direct to
maximize classification accuracy. We define the graph walk as a partially
observable Markov decision process (POMDP). The proposed method is flexible for
working in both transductive and inductive setting. Extensive experiments on
four datasets demonstrate that our proposed method outperforms several
state-of-the-art methods. Several case studies also illustrate the meaningful
movement trajectory made by the agent.
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Social media is increasingly being used as a news-platform. To reach their
intended audience, newspapers need for their articles to be well ranked by
Facebook's news-feed algorithm. The number of likes, shares and other reactions
determine the lead scoring criteria. This paper will try to assess how the
reaction volume is impacted by the following criteria: (1) Delay between event
and post release; (2) Time of the day the post is published; and (3) Post
format: video, photo or text. To isolate the effect of the publication time and
post format on a post, we need to control for the news-event and the publishing
newspaper. For that end, a news-aggregator is designed and implemented, to
group together posts that relate to the same news-event. This tool gave some
spin-off results, allowing the ability to map newspapers by similarity and to
detect some topic omissions.
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Few statistically compelling correlations are found in pulsar timing data
between the size of a rotational glitch and the time to the preceding glitch
(backward waiting time) or the succeeding glitch (forward waiting time), except
for a strong correlation between sizes and forward waiting times in PSR
J0537-6910. This situation is counterintuitive, if glitches are
threshold-triggered events, as in standard theories (e.g. starquakes,
superfluid vortex avalanches). Here it is shown that the lack of correlation
emerges naturally, when a threshold trigger is combined with secular stellar
braking slower than a critical, calculable rate. The Pearson and Spearman
correlation coefficients are computed and interpreted within the framework of a
state-dependent Poisson process. Specific, falsifiable predictions are made
regarding what objects currently targeted by long-term timing campaigns should
develop strong size-waiting-time correlations, as more data are collected in
the future.
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We investigate the origin and evolution of fossil groups in a concordance
LCDM cosmological simulation. We consider haloes with masses between
$(1-5)\times10^{13} \hMsun$ and study the physical mechanisms that lead to the
formation of the large gap in magnitude between the brightest and the second
most bright group member, which is typical for these fossil systems. Fossil
groups are found to have high dark matter concentrations, which we can relate
to their early formation time. The large magnitude-gaps arise after the groups
have build up half of their final mass, due to merging of massive group
members. We show that the existence of fossil systems is primarily driven by
the relatively early infall of massive satellites, and that we do not find a
strong environmental dependence for these systems. In addition, we find
tentative evidence for fossil group satellites falling in on orbits with
typically lower angular momentum, which might lead to a more efficient merger
onto the host. We find a population of groups at higher redshifts that go
through a ``fossil phase'': a stage where they show a large magnitude-gap,
which is terminated by renewed infall from their environment.
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... excited I started to use it rt away worked great on the first ball after that not so good
I got this for Christmas I was soo excited I started to use it rt away worked great on the first ball after that not so good, the yarn started to slip on every turn, it did nit matter how tight or loose my tension was, the yarn even got tangled up and it took me awhile to un tangle it.im so disappointed
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Good selection of paintings
I am not sure why this is called an autobiography. What it does offer is a brief commentary by the artist for each painting. But the book is large enough for good-size reproductions and they seem to be of good quality. There are all in color and there are enough paintings included to have a sufficient overview of his best work. It is great to have a fine sampling of Wyeth without the bulk of a heavy, coffee-table sized volume.
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We study power control for an energy harvesting communication system with
independent and identically distributed Bernoulli energy arrivals. It is
assumed that the transmitter is equipped with a finite-sized rechargeable
battery and is able to look ahead to observe a fixed number of future arrivals.
A complete characterization is provided for the optimal power control policy
that achieves the maximum long-term average throughput over an additive white
Gaussian noise channel.
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Context. G24.78+0.08 A1 is a 20 Msun star surrounded by a hypercompact (HC)
HII region, driving a CO bipolar outflow, and located at the center of a
massive rotating toroid undergoing infall towards the HC region. Recent water
maser observations suggest that the HC region is expanding and accretion onto
the star is halted. Aims. This study aims to confirm the expansion scenario
proposed for the HC region on the basis of recent H2O maser observations.
Methods. We carried out continuum VLA observations at 1.3cm and 7mm with the A
array plus Pie Town configuration to map the HC region towards G24 A1. Results.
The emission of the HC region has been resolved and shows a ring shape
structure. The profiles of the emission obtained by taking slices at different
angles passing through the barycenter of the HC region confirm the shell
structure of the emission. The ratio between the inner and the outer radius of
the shell, Ri/Ro, derived fitting the normalized brightness temperature profile
passing through the peak of the 7mm emission, is 0.9, which indicates that the
shell is thin. The deconvolved outer radius estimated from the fit is 590 AU.
These results imply that the HC region in G24 A1 cannot be described in terms
of a classical, homogeneous HII region but is instead an ionized shell. This
gives support to the model of an expanding wind-driven, ionized shell suggested
by the kinematics and distribution of the H2O masers associated with the HC
region. According to this model, the HC region is expanding on very short times
scales, 21-66 yr.
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Upgrading streetlights; sounds like a good idea. Saving money; also a good idea. Pollution sensors; I like that one a lot. Could be useful in fixing bad traffic patterns that stall drivers overlong in certain areas.
Installing video, still cameras, visual tracking of any kind, audio recording capability - No.
Not just no, but HELL no. Enough loss of privacy already. There's enough cameras out there now for every person on the freakin' planet to have their own selfie 24-7. Big Brother needs to be on a short leash - hopefully one so short and tight he's gasping for air.
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Least squares approximation is a technique to find an approximate solution to
a system of linear equations that has no exact solution. In a typical setting,
one lets $n$ be the number of constraints and $d$ be the number of variables,
with $n \gg d$. Then, existing exact methods find a solution vector in
$O(nd^2)$ time. We present two randomized algorithms that provide very accurate
relative-error approximations to the optimal value and the solution vector of a
least squares approximation problem more rapidly than existing exact
algorithms. Both of our algorithms preprocess the data with the Randomized
Hadamard Transform. One then uniformly randomly samples constraints and solves
the smaller problem on those constraints, and the other performs a sparse
random projection and solves the smaller problem on those projected
coordinates. In both cases, solving the smaller problem provides relative-error
approximations, and, if $n$ is sufficiently larger than $d$, the approximate
solution can be computed in $O(nd \log d)$ time.
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A deep wide-field image in the light of the Halpha+[N II] emission lines, of
the planetary nebula HFG1 which surrounds the precataclysmic binary system V664
Cas, has revealed a tail of emission at least 20' long, at a position angle of
316deg. Evidence is presented which suggests that this is an ~10^5 y old trail
of shocked material, left behind V664 Cas as it ejects matter whilst ploughing
through its local interstellar media at anywhere between 29 and 59 km/s
depending on its distance from the Sun.
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The realism of current models of the penumbra is assessed by comparing their
predictions with the plasma properties of penumbral filaments as retrieved from
spectropolarimetric observations. The spectropolarimeter onboard Hinode allows
us to distinguish for the first time the fine structure of the penumbra.
Therefore, we can use one-component inversions to obtain the stratifications of
plasma parameters in each pixel. The correlations between the plasma parameters
and the continuum intensity are studied. We find that, in the outer penumbra,
the stronger flows and higher values of magnetic field inclination tend to be
located in dark filaments. This finding does not seem to be compatible with the
scenario of a field-free gappy penumbra.
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The strongest absorption features with the lower-level excitation potentials
$\chi_{\rm low}<1$ eV are found to be split in the high-resolution optical
spectra of the post-AGB star V354 Lac taken in 2007--2008. Main parameters,
T$_{eff}$=5650 K, $\log g$=0.2, $\xi_t$=5.0 km/s, and the abundances of 22
chemical elements in the star's atmosphere are found. The overabundance of the
$s$-process chemical elements (Ba, La, Ce, Nd) in the star's atmosphere is
partly due to the splitting of strong lines of the ions of these metals. The
peculiarities of the spectrum in the wavelength interval containing the LiI
$\lambda$ 6707 \AA{} line can be naturally explained only by taking the
overabundances of the CeII and SmII heavy-metal ions into account. The best
agreement with the synthetic spectrum is achieved assuming $\epsilon$(LiI)=2.0,
$\epsilon$(CeII)=3.2, and $\epsilon$(SmII)=2.7. The velocity field both in the
atmosphere and in the circumstellar envelope of V354 Lac remained stationary
throughout the last 15 years of our observations.
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In this study, we present the first results of a complete implementation of
the LDBC SNB benchmark -- interactive short, interactive complex, and business
intelligence -- in two native graph database systems---Neo4j and TigerGraph. In
addition to thoroughly evaluating the performance of all of the 46 queries in
the benchmark on four scale factors -- SF-1, SF-10, SF-100, and SF-1000 -- and
three computing architectures -- on premise and in the cloud -- we also measure
the bulk loading time and storage size. Our results show that TigerGraph is
consistently outperforming Neo4j on the majority of the queries---by two or
more orders of magnitude (100X factor) on certain interactive complex and
business intelligence queries. The gap increases with the size of the data
since only TigerGraph is able to scale to SF-1000---Neo4j finishes only 12 of
the 25 business intelligence queries in reasonable time. Nonetheless, Neo4j is
generally faster at bulk loading graph data up to SF-100. A key to our study is
the active involvement of the vendors in the tuning of their platforms. In
order to encourage reproducibility, we make all the code, scripts, and
configuration parameters publicly available online.
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Sturdy shipping method.
Third or fourth time I have ordered these. Very sturdy and great for packaging up sticker sets. The issue I have is that the material they use to make these seems to change every time I order them. Also the last batch the construction is different as well. I still think they are a good product, but would prefer if they didn't change something that was close to perfect.
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A topological space $X$ is cometrizable if it admits a weaker metrizable
topology such that each point $x\in X$ has a (not necessarily open)
neighborhood base consisting of metrically closed sets. We study the relation
of cometrizable spaces to other generalized metric spaces and prove that all
$\mathsf{as}$-cosmic spaces are cometrizable. Also, we present an example of a
regular countable space of weight $\omega_1$, which is not cometrizable. Under
$\omega_1=\mathfrak c$ this space contains no infinite compact subsets and
hence is $\mathsf{cs}$-cosmic. Under $\omega_1<\mathfrak p$ this countable
space is Fr\'echet-Urysohn and is not $\mathsf{cs}$-cosmic.
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We examine the efficacy of streamwise traveling waves generated by a
zero-net-mass-flux surface blowing and suction for controlling the onset of
turbulence in a channel flow. For small amplitude actuation, we utilize weakly
nonlinear analysis to determine base flow modifications and to assess the
resulting net power balance. Receptivity analysis of the velocity fluctuations
around this base flow is then employed to design the traveling waves. Our
simulation-free approach reveals that, relative to the flow with no control,
the downstream traveling waves with properly designed speed and frequency can
significantly reduce receptivity which makes them well-suited for controlling
the onset of turbulence. In contrast, the velocity fluctuations around the
upstream traveling waves exhibit larger receptivity to disturbances. Our
theoretical predictions, obtained by perturbation analysis (in the wave
amplitude) of the linearized Navier-Stokes equations with spatially periodic
coefficients, are verified using full-scale simulations of the nonlinear flow
dynamics in companion paper, Lieu, Moarref & Jovanovi\'c (2010).
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Wave chaos is demonstrated by studying a wave propagation in a periodically
corrugated wave-guide. In the limit of a short wave approximation (SWA) the
underlying description is related to the chaotic ray dynamics. In this case the
control parameter of the problem is characterized by the corrugation amplitude
and the SWA parameter. The considered model is fairly suitable and tractable
for the analytical analysis of a wave localization length. The number of
eigenmodes characterized the width of the localized wave packet is estimated
analytically.
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Entanglement-assisted communication over a random-parameter quantum channel
with either causal or non-causal channel side information (CSI) at the encoder
is considered. This describes a scenario where the quantum channel depends on
the quantum state of the input environment. While Bob, the decoder, has no
access to this state, Alice, the transmitter, performs a sequence of projective
measurements on her environment and encodes her message accordingly. Dupuis
established the entanglement-assisted capacity with non-causal CSI. Here, we
establish characterization in the causal setting, and also give an alternative
proof technique and further observations for the non-causal setting.
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Don't use with a pop socket
You do have to be careful when you charge. It doesn't always catch but others then that has charged pretty quick. Not as fast as a plug in. If you have a pop socket it won't charge at all because it blocks the connection with the phone.
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This paper develops an online algorithm to solve a time-varying optimization
problem with an objective that comprises a known time-varying cost and an
unknown function. This problem structure arises in a number of engineering
systems and cyber-physical systems where the known function captures
time-varying engineering costs, and the unknown function models user's
satisfaction; in this context, the objective is to strike a balance between
given performance metrics and user's satisfaction. Key challenges related to
the problem at hand are related to (1) the time variability of the problem, and
(2) the fact that learning of the user's utility function is performed
concurrently with the execution of the online algorithm. This paper leverages
Gaussian processes (GP) to learn the unknown cost function from noisy
functional evaluation and build pertinent upper confidence bounds. Using the GP
formalism, the paper then advocates time-varying optimization tools to design
an online algorithm that exhibits tracking of the oracle-based optimal
trajectory within an error ball, while learning the user's satisfaction
function with no-regret. The algorithmic steps are inexact, to account for
possible limited computational budgets or real-time implementation
considerations. Numerical examples are illustrated based on a problem related
to vehicle platooning.
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Medical robotics includes assistive devices used by the physician in order to
make his/her diagnostic or therapeutic practices easier and more efficient.
This chapter focuses on such systems. It introduces the general field of
Computer-Assisted Medical Interventions, its aims, its different components and
describes the place of robots in that context. The evolutions in terms of
general design and control paradigms in the development of medical robots are
presented and issues specific to that application domain are discussed. A view
of existing systems, on-going developments and future trends is given. A
case-study is detailed. Other types of robotic help in the medical environment
(such as for assisting a handicapped person, for rehabilitation of a patient or
for replacement of some damaged/suppressed limbs or organs) are out of the
scope of this chapter.
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In this paper, we will show that the sheaf of p-adic vanishing cycles of a
log smooth family over a DVR of mixed characteristic is generated by Milnor
symboles. A key ingredient is a computation (due to K. Kato) on the graded
quotients of a multi-indexed filtration on the sheaf concerned, which has been
used in several papers of the first author.
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We investigate an important question of Hawking-like radiation as seen by an
infalling observer during gravitational collapse. Using the functional
Schrodinger formalism we are able to probe the time dependent regime which is
out of the reach of the standard approximations like the Bogolyubov method. We
calculate the occupation number of particles whose frequencies are measured in
the proper time of an infalling observer in two crucially different space-time
foliations: Schwarzschild and Eddington-Finkelstein. We demonstrate that the
distribution in Schwarzschild reference frame is not quite thermal, though it
becomes thermal once the horizon is crossed. We approximately fit the
temperature and find that the local temperature increases as the horizon is
approached, and diverges exactly at the horizon. In Eddington-Finkelstein
reference frame the temperature at the horizon is finite, since the observer in
that frame is not accelerated. These results are in agreement with what is
generically expected in the absence of backreaction. We also discuss some
subtleties related to the physical interpretation of the infinite local
temperature in Schwarzschild reference frame.
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In this paper, we have studied on adapting to asymmetric cryptography power
Fibonacci sequence module m . To do this, We have restructed Discreate
Logarithm Problem which is one of mathematical difficult problems by using
power Fibonacci sequence module m and by means of this sequences, we have made
the mathematical difficult problem which is used only in prime modules is also
useful for composite modules. Then we have constructed cryptographic system
based on this more difficult problem which we have rearranged. Hence, we have
obtained a new cryptosystem as ElGamal Cryptosystem. Lastly, we have compared
that ElGamal Cryptosystem and a new cryptosystem which we constitute in terms
of cryptography and we have obtained that a new cryptosystem is more
advantageuos than ElGamal Cryptosystem.
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In this paper, we consider the following non-linear equations in unbounded
domains $\Omega$ with exterior Dirichlet condition:
\begin{equation*}\begin{cases} (-\Delta)_p^s u(x)=f(u(x)), & x\in\Omega,\\
u(x)>0, &x\in\Omega,\\ u(x)\leq0, &x\in \mathbb{R}^n\setminus \Omega,
\end{cases}\end{equation*} where $(-\Delta)_p^s$ is the fractional p-Laplacian
defined as \begin{equation} (-\Delta)_p^s
u(x)=C_{n,s,p}P.V.\int_{\mathbb{R}^n}\frac{|u(x)-u(y)|^{p-2}[u(x)-u(y)]}{|x-y|^{n+s
p}}dy \label{0} \end{equation} with $0<s<1$ and $p\geq 2$. We first establish a
maximum principle in unbounded domains involving the fractional p-Laplacian by
estimating the singular integral in (\ref{0}) along a sequence of approximate
maximum points. Then, we obtain the asymptotic behavior of solutions far away
from the boundary. Finally, we develop a sliding method for the fractional
p-Laplacians and apply it to derive the monotonicity and uniqueness of
solutions. There have been similar results for the regular Laplacian
\cite{BCN1} and for the fractional Laplacian \cite{DSV}, which are linear
operators. Unfortunately, many approaches there no longer work for the fully
non-linear fractional p-Laplacian here. To circumvent these difficulties, we
introduce several new ideas, which enable us not only to deal with non-linear
non-local equations, but also to remarkably weaken the conditions on $f(\cdot)$
and on the domain $\Omega$. We believe that the new methods developed in our
paper can be widely applied to many problems in unbounded domains involving
non-linear non-local operators.
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Very recently, the Large Hadron Collider was turned on. There, the
experiments are aiming to test different scenarios for elementary particles
interactions from SUSY, Extra dimensions to others. In fact, SUSY was invented
to kill the conceptual problems existing in the conventional Standard model
\textit{i.e.} the Hierarchy problem. However, in recent years, certain theories
which was rejected in the past like the wrong sign $\phi^{4}$ theory is now
well known to be a truly physically acceptable theory. Here, we analyze the
renormalization group flow of the different parameters in the theory. We find
that, rather than the conventional $\phi^{4}$ theory and because the theory is
asymptotically free, it does not sufferer from the catastrophic blow up of the
mass parameter for UV scales. This feature greatly recommend that this theory
is a plausible candidate to play the role of the $SU(2)\times U(1)$ symmetry
breaking in the standard model. If this picture will agree with the
experimental results from LHC, then the Higgs particle was massless in the far
past. Moreover, the cosmological constant problem as a Hierarchy problem may be
solved too. However, when trying to calculate the metric operator, we expected
that the equivalent Hermitian theory may attain non-remormalizabe terms and
thus the theory is incalculable. In fact, we show that there exists a Hermitian
and renormalizable equivalent theory though of indefinite metric. We
reformulated the Klein-Gordon equation in such a way that the wrong sign in the
propagator attains a new physical meaning that the Higgs particle is made from
exotic matter.
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ARDS due to COVID-19 and other etiologies results from injury to the alveolar epithelial cell (AEC) barrier resulting in noncardiogenic pulmonary edema, which causes acute respiratory failure; clinical recovery requires epithelial regeneration. During physiologic regeneration in mice, AEC2s proliferate, exit the cell cycle, and transiently assume a transitional state before differentiating into AEC1s; persistence of the transitional state is associated with pulmonary fibrosis in humans. It is unknown whether transitional cells emerge and differentiate into AEC1s without fibrosis in human ARDS and why transitional cells differentiate into AEC1s during physiologic regeneration but persist in fibrosis. We hypothesized that incomplete but ongoing AEC1 differentiation from transitional cells without fibrosis may underlie persistent barrier permeability and fatal acute respiratory failure in ARDS. Immunostaining of postmortem ARDS lungs revealed abundant transitional cells in organized monolayers on alveolar septa without fibrosis. They were typically cuboidal or partially spread, sometimes flat, and occasionally expressed AEC1 markers. Immunostaining and/or interrogation of scRNAseq datasets revealed that transitional cells in mouse models of physiologic regeneration, ARDS, and fibrosis express markers of cell cycle exit but only in fibrosis express a specific senescence marker. Thus, in severe, fatal early ARDS, AEC1 differentiation from transitional cells is incomplete, underlying persistent barrier permeability and respiratory failure, but ongoing without fibrosis; senescence of transitional cells may be associated with pulmonary fibrosis.
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Let {X_{t_1,t_2}: t_1,t_2 >= 0} be a two-parameter L\'evy process on R^d. We
study basic properties of the one-parameter process {X_{x(t),y(t)}: t \in T}
where x and y are, respectively, nondecreasing and nonincreasing nonnegative
continuous functions on the interval T. We focus on and characterize the case
where the process has stationary increments.
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Throughout the 1950s and into the 60s, 70s and even into the 80s, a slew of war films were produced in the former Yugoslavia, glorifying the heroism of the "Partisans" civilians who turned out to fight a guerrilla war against the invading German forces. Hajrudin Krvavac, who's generally only known in Eastern Europe, directed quite a few of these "partisan" stories; unfortunately, only a handful of them were ever exported to the rest of the Europe and the United States. "Battle of the Eagles" is a rare, low-budget look at the formation and exploits of the Partisan Air Force.<br /><br />Marshal Tito decrees that a Partisan Air Force must be formed to combat the German Luftwaffe in the skies over Yugoslavia. A group of former pilots join forces with two small biplanes and begin raiding enemy bases and convoys; over the course of several months, more pilots and planes join the ranks, eventually forming a formidable air force. Maybe it's history, or maybe it's fable whatever it is, it sure isn't convincing, but a cast of great actors sure try to make it work.<br /><br />The film opens strongly with a well-shot German air raid on defenseless partisans. The nuts and bolts of the plot come together almost immediately, and for a short while the audience is treated to a rather patriotic series of scenes. Then the action starts, and this title quickly becomes yet another low-budget, by-the-numbers adventure. All of the characters are familiar clichés: Major Dragan (played by a well-meaning Bekim Fehmiu) is our typical patriotic, heroic leading man. He blasts away at strafing planes with a machine-gun and even has an aerial duel with the villainous Klauberg (Radko Polic), a completely predictable and corny climax with an equally predictable outcome. The rest of the partisans are familiar: Ljubisa Samardzic ("The Battle of Neretva") is a Zare, a hotshot playboy; Bata Zivojinovic ("Hell River") is Voss, a veteran flyer who comes out of the woodwork now that his country needs him; and Rados Bajic ("The Day that Shook the World") is Dalibor, a young messenger boy who moves up through the ranks, eventually becoming a seasoned combat pilot. The characters and their stories are familiar to any war fan, and Krvavac doesn't try to build upon these stereotypes. The cast does a fair job, and despite the two-dimensional script, every player is engaging and fun to watch. Bajic, in particular, has some great moments when he's going to take his first flight as a gunner, and later, when he is forced to land a plane after the pilot is killed. The plot merely consists of a string of air raids against the Germans, and subsequent retaliatory acts.<br /><br />Krvavac handles the action sequences competently with a mix of actual footage and miniature effects. Unfortunately, the miniatures are so cheap and false-looking that the transitions between actual aerial photography and toy planes are jarring and laughable. Some of the strafing and bombing scenes look shockingly real, while dogfights involving scale models, complete with action figure pilots, are just plain pathetic. Sometimes smoke puffs from the "machine-guns" are so big that the smoke engulfs the entire model plane. Worse, the editors often superimpose shots of fighters over real footage. Although the aircraft are usually in proper perspective, they're surrounded by a distracting glow which hinders any attempt at realism. All of this action is set to an incredibly familiar and annoying score by Bojan Adamic.<br /><br />"Battle of the Eagles" also suffers from a very poorly edited English-language release. To begin with, 28 minutes of footage is missing cutting the film from 130 minutes to a mere 102. The missing segments were carelessly excised, and the cutting looks very sloppy. Music cues are abruptly cut off and scenes are abandoned before they are resolved. In the last third of the film, the story falls apart, and only some badly-needed action scenes can try to save it from total incomprehensibility. Then, there's the dubbing
all of the scenes revolving around the Partisans are dubbed in English (rather poorly, however), yet several lengthy scenes remain in German, without the benefit of subtitles. The film might have made much more sense had the German-language sequences been excised instead of crucial scenes revolving around the Partisans.<br /><br />On the plus side, Krvavac handles the outdoor footage quite well. There is never a moment where the audience feels like they're on a soundstage. In particular, the German Luftwaffe bases are expansive, complete with dozens of Messerschmitt fighter planes and extras costumed in leather flying jackets. The scenery is fresh and green, and Krvavac isn't afraid to shoot scenes with extremely wide angles or from far away simply to convey the scope of a battle or long trek. A German ambush of a partisan unit early on in the picture stands out, as does a sequence where Zare and Dalibor escape from an enemy base.<br /><br />As it exists on home video, "Battle of the Eagles" is just another of many stories about the Yugoslav Partisan movement. There is nothing to set it apart from the rest of the crop, and the terrible special effects and drastic editing put it a notch below acceptable. Try to avoid this one unless you can find a full-length copy.
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Directing both organismal homeostasis and physiological adaptation, the pituitary is a key endocrine gland in all vertebrates. It communicates the needs of the organism to different organs by secreting hormones into the bloodstream. Here, we have used the model fish medaka to investigate the developmental dynamics in the pituitary using a comprehensive RNA-seq time series. By linking developmental expression trends to single-cell RNA-seq profiles, we show how the transcriptional activities of cell types change during sexual maturation. One of the most prominent changes is the decline of the non-endocrine folliculo-stellate cell populations, and especially of rare cells expressing genes encoding secreted lipid transport proteins. As these genes are typically associated with the liver, this reveals the existence of unexpected connections between endocrine communication, lipid homeostasis, and sexual maturation.
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Finally ...
This issue has been (goofily) going on for so long (for so many decades) that the current decade's plaintiffs (and their government-funded boutique lawyers) have seem to have lost touch. Or been Disney-fied.
At least Tony Soprano was mostly wink-and-nod and up-front about his fund-raising efforts ...
Like ... the Supreme Court of Canada is starting to sense the mood of our nation?
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Synchronization is of importance in both fundamental and applied physics, but
their demonstration at the micro/nanoscale is mainly limited to low-frequency
oscillations like mechanical resonators. Here, we report the synchronization of
two coupled optical microresonators, in which the high-frequency resonances in
optical domain are aligned with reduced noise. It is found that two types of
synchronization emerge with either the first- or second-order transition, both
presenting a process of spontaneous symmetry breaking. In the second-order
regime, the synchronization happens with an invariant topological character
number and a larger detuning than that of the first-order case. Furthermore, an
unconventional hysteresis behavior is revealed for a time-dependent coupling
strength, breaking the static limitation and the temporal reciprocity. The
synchronization of optical microresonators offers great potential in
reconfigurable simulations of many-body physics and scalable photonic devices
on a chip.
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Dave, you should realize that this movement is an attempt to castrate the Electoral College. It is a hack; a bad solution to a real problem. Unfortunately because the Electoral College is so entrenched in our system, there is no good way to dig it out. This is why I support this effort, while holding my nose.
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Good, until the ending
Not bad, until the end. How is it that the hero's daughter, after going through her own mother's death, and the subsequent trauma with her dad... but wait... it gets better... then, at the end of the book being kidnapped and witnessing two people murdered, along with having to save her dad from drowning after he'd been shot... doesn't show any signs of trauma. Yep. Pretty dramatic ending. But, it's all good because they're all going to run in a 10k.
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We give a pedagogical introduction to the study of supersymmetric partition
functions of 3D $\mathcal{N}{=}2$ supersymmetric Chern-Simons-matter theories
(with an $R$-symmetry) on half-BPS closed three-manifolds---including $S^3$,
$S^2 \times S^1$, and any Seifert three-manifold. Three-dimensional gauge
theories can flow to non-trivial fixed points in the infrared. In the presence
of 3D $\mathcal{N}{=}2$ supersymmetry, many exact results are known about the
strongly-coupled infrared, due in good part to powerful localization
techniques. We review some of these techniques and emphasize some more recent
developments, which provide a simple and comprehensive formalism for the exact
computation of half-BPS observables on closed three-manifolds (partition
functions and correlation functions of line operators). Along the way, we also
review simple examples of 3D infrared dualities. The computation of
supersymmetric partition functions provides exceedingly precise tests of these
dualities.
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In this work, we investigate the dynamics of vortex-induced vibration of an
elastically mounted cylinder with very low values of mass and damping. We use
two methods to investigate this canonical problem: first we calculate the
instantaneous phase between the cylinder motion and the fluid forcing; second
we decompose the total hydrodynamic force into drag and lift components that
act along and normal to, respectively, the instantaneous effective angle of
attack. We focus on the phase dynamics in the large-amplitude-response range,
consisting of the initial, upper and lower branches of response. The
instantaneous phase between the transverse force and displacement shows
repeated phase slips separating periods of constant, or continuous-drifting,
phase in the second half of the upper branch. The phase between the lift
component and displacement shows strong phase locking throughout the
large-amplitude range - the average phase varies linearly with the primary
frequency - however the modulation of this phase is largest in the second half
of the upper branch. These observations suggest that the
large-amplitude-response dynamics is driven by two distinct limit cycles - one
that is stable over a very small range of reduced velocity at the beginning of
the upper branch, and another that consists of the lower branch. The chaotic
oscillation between them - the majority of the upper branch - occurs when
neither limit cycle is stable. The transition between the upper and lower
branches is marked by intermittent switching with epochs of time where
different states exist at a constant reduced velocity. These different states
are clearly apparent in the phase between the lift and displacement,
illustrating the utility of the force decomposition employed.
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Elliott dimension drop interval algebra is an important class among all
$C^*$-algebras in the classification theory. Especially, they are building
stones of $\mathcal{AHD}$ algebra and the latter contains all $AH$ algebras
with the ideal property of no dimension growth.
In this paper, we will show two decomposition theorems related to the Elliott
dimension drop interval algebra. Our results are key steps in classifying all
$AH$ algebras with the ideal property of no dimension growth.
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We characterize the accuracy of analyzing the performance of a NOMA system
where users are ranked according to their distances instead of instantaneous
channel gains, i.e., product of distance-based path-loss and fading channel
gains. Distance-based ranking is analytically tractable and can lead to
important insights. However, it may not be appropriate in a multipath fading
environment where a near user suffers from severe fading while a far user
experiences weak fading. Since the ranking of users in a NOMA system has a
direct impact on coverage probability analysis, impact of the traditional
distance-based ranking, as opposed to instantaneous signal power-based ranking,
needs to be understood. This will enable us to identify scenarios where
distance-based ranking, which is easier to implement compared to instantaneous
signal power-based ranking, is acceptable for system performance analysis. To
this end, in this paper, we derive the probability of the event when
distance-based ranking yields the same results as instantaneous signal
power-based ranking, which is referred to as the accuracy probability. We
characterize the probability of accuracy considering Nakagami-m fading channels
and three different spatial distribution models of user locations in NOMA. We
illustrate the impact of accuracy probability on uplink and downlink coverage
probability.
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Causes neck strain because it's too bulky in the back. Pushes your head forward.
This pillow was too bulky. The back portion is so thick it pushes my head forward causing strain on my neck. Attempted using it on an international flight and winded up using it as a lumbar pillow (it worked nicely for that but not why I bought it) and used the flimsy airline pillow on my neck. Super disapointing. Not sure how so many others have had positive reviews. I can only assume they bought it as a gift for someone else or haven't actually tried using it in flight. Would not recommend.
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Beautiful and tasty
Very beautiful wood and clean. No dents or scratches. Arrived with everything separated and bubble wrapped. Took two people to assemble and needed a power drill. Then found there was no netting for my bunny to stay clean. My dad bought some netting from ace hardware for about $10. Added to the bottom like a floor. She looks very happy and clean. The indoor hutch is her favorite to hide away from kids and other dogs. It gave her privacy. However she chewed up the entry to the hutch. Hopefully this home last long for her.
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Pretty but heavy earrings
The earrings are extremely well made and beautiful. Unfortunately they are too heavy for me and pull on my earlobes. The shipping cost is triple what the earrings cost and it is not worth the time or money to return them. I will have to give them away.
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In this paper, we study a macroscopic system of electrically interacting
metallic beads organized as a sequence along an annulus. A random mechanical
shaking mimics the thermal excitation. We exhibit non Fickian diffusion (Single
File Diffusion) at large time. We measure the mobility of the particles, and
compare it to theoretical expectations. We show that our system cannot be
accurately described by theories assuming only hard sphere interactions. Its
behavior is qualitatively described by a theory extended to more realistic
potentials [Kollmann, PRL {\bf 90} 180602, (2003)]. A correct quantitative
agreement is shown, and we interpret the discrepancies by the violation of a
key assumption of the theory, that of overdamped dynamics. We recast previous
results on colloids with known interaction potentials, and compare them
quantitatively to the theory. Focusing on the transition between ordinary and
single file diffusion, we exhibit a dimensionless crossover time that is of
order one both for colloids and our system, although the time and length scales
differ by several orders of magnitude.
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First an explanation on what makes a great movie for me. Excitement about not knowing what is coming next will make me enjoy a movie the first time I watch it (case en point: Twister). There are also other things that go into a great first viewing such as good humor (John Candy in Uncle Buck and The Great Outdoors), good plot with good resolution (Madeline and Matilda), imaginative storytelling (all Star Wars episodes-George Lucas is THE MAN), and good music (again all Star Wars episodes, Wizard of Oz, Sound of Music). What makes me watch a movie at least six times in the theatre and buy a DVD or VHS tape? Characters. With that said, I present Cindy Lou Who and The Grinch. Excellent performance Taylor Momsen and Jim Carrey. The rest of the cast was very good, particularly Jeffery Tambor, Bill Irwin, Molly Shannon, Christine Baranski, and Josh Ryan Evans. But, every single scene with Cindy and The Grinch-together is excellent and very funny and/or heartwarming. Cindy Lou is my favorite character in this movie and the most compelling reason why the movie is better than the cartoon. The Grinch has a strong plot, good conflicts, and a very good theme (I can't get started because I don't want to spoil it). Jim Carrey was very funny as The Grinch-particularly when he interacted with Cindy. And the music! Wow! Excellent music by James Horner. I loved his selection of instruments and the compositions. Very good job Jim Carrey-I didn't know you could sing. Taylor Momsen! Whoa! Your voice is reason enough to see the movie at least once. On your solo - Where Are You Christmas - is your voice really as high as it sounds? Sounds like an F#? That is an obscene range for a 7-year old (obscene meant in the best possible way). Great job. This is the best performance by a child I have ever heard in a movie(Taylor beat out the Von Trapp Children-no small feat!). And now to the actors. Jim Carrey was great, funny, and, surprisingly very sensitive (this really showed through in his scenes with Taylor Momsen). Taylor Momsen's unspoken expressions(one of the secrets to a good acting performance) are very strong-she really becomes Cindy Lou Who. And when she does dialogue she is even stronger.<br /><br />******************************danger:spoiler alert********************* ***********************************************************************<br /><br />Examples: expression when she first sees The Grinch. This is a classic quote ("You're the the the" and then filled in with the Grinch line "da da da THE GRINCH-after which she topples into the sorter and then is rescued by The Grinch). The "Thanks for saving me" quote and subsequent response by The Grinch was also very good.<br /><br />My favorite part of the movie is when Cindy invites The Grinch to be Holiday Cheermeister. This scene is two excellent actors at their best interacting and expressing with each other. Little Taylor Momsen completely holds her own with Jim Carrey in this spot. I sincerely hope we see Taylor Momsen in many more films to come. All in all everything was great about this movie (except maybe the feet and noses).
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Selfdual representations of any group fall into two classes when they are
irreducible: those which carry a symmetric bilinear form, and the others which
carry an alternating bilinear form. The Langlands correspondence, which matches
the irreducible representations \sigma of the Weil group of a local field k of
dimension n with the irreducible representations \pi of the invertible elements
of a division algebra D over k of index n, takes selfdual representations to
selfdual representations. In this paper we use global methods to study how the
Langlands correspondence behaves relative to this distinction among selfdual
representations. We prove in particular that for n even, \sigma is symplectic
if and only if \pi is orthogonal. Our results treat more generally the case of
GL_m(B), for B a division algebra over k of index r, and n=mr.
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More and more evidence indicates that "EIT waves" are strongly related to
coronal mass ejections (CMEs). However, it is still not clear how the two
phenomena are related to each other. We investigate a CME event on 1997
September 9, which was well observed by both EUV imaging telescope (EIT) and
the high-cadence MK3 coronagraph at Mauna Loa Solar Observatory, and compare
the spatial relation between the "EIT wave" fronts and the CME leading loops.
It is found that "EIT wave" fronts are co-spatial with the CME leading loops,
and the expanding EUV dimmings are co-spatial with the CME cavity. It is also
found that the CME stopped near the boundary of a coronal hole, a feature
common to observations of "EIT waves". It is suggested that "EIT
waves"/dimmings are the EUV counterparts of the CME leading loop/cavity, based
on which we propose that, as in the case of "EIT waves", CME leading loops are
apparently-moving density enhancements that are generated by successive
stretching (or opening-up) of magnetic loops.
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The relativistic nuclear recoil, higher-order interelectronic-interaction,
and screened QED corrections to the transition energies in Li-like ions are
evaluated. The calculation of the relativistic recoil effect is performed to
all orders in 1/Z. The interelectronic-interaction correction to the transition
energies beyond the two-photon exchange level is evaluated to all orders in 1/Z
within the Breit approximation. The evaluation is carried out employing the
large-scale configuration-interaction Dirac-Fock-Sturm method. The rigorous
calculation of the complete gauge invariant sets of the screened self-energy
and vacuum-polarization diagrams is performed utilizing a local screening
potential as the zeroth-order approximation. The theoretical predictions for
the 2p_j-2s transition energies are compiled and compared with available
experimental data in the range of the nuclear charge number Z=10-60.
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Was this sitting in a wet basement? Eww
i mean really? I wonder how old this tape is. It looks like it’s been in a wet basement. I know it’s just tape. But I’m disgusted that someone would even send something marked NEW that looks like this. Hope it still works. I won’t be purchasing from this seller again. Disgusting.
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HD 21190 is a known $\delta$ Scuti star showing Ap star characteristics and a
variability period of 3.6 h discovered by the Hipparcos mission. Using Gaia DR1
data for an astrometric analysis, it was recently suggested that HD 21190 forms
a physical binary system with the companion CPD -83$^{\circ}$ 64B. An
atmospheric chemical analysis based on HARPS observations revealed the presence
of overabundances of heavy and rare-earth elements, which are typically
observed in chemically peculiar stars with large-scale organized magnetic
fields. Previous observations of HD 21190 indicated a magnetic field strength
of a few hundred Gauss. The presence of a magnetic field in CPD -83$^{\circ}$
64B remained unexplored. In this work, we reanalyse this system using Gaia DR2
data and present our search for the magnetic field in both stars based on
multi-epoch HARPSpol high-resolution and FORS 2 low-resolution
spectropolarimetric observations. The Gaia DR2 results clearly indicate that
the two star are not physically associated. A magnetic field detection at a
significance level of more than 6$\sigma$ ($\left< B_{\rm z}\right>_{\rm
all}=230\pm38$ G) was achieved for the $\delta$ Scuti variable HD 21190 in FORS
2 observations using the entire spectrum for the measurements. The magnetic
field appears to be stronger in CPD -83$^{\circ}$ 64B. The highest value for
the longitudinal magnetic field in CPD -83$^{\circ}$ 64B, $\left< B_{\rm
z}\right>_{\rm all}=509\pm104$ G, is measured at a significance level of
4.9$\sigma$. Furthermore, the high-resolution HARPS\-pol observations of this
component indicate the presence of pulsational variability on a time scale of
tens of minutes.
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The Sarah Silverman program is very similar to Sarah's own stand up; It's so over the top with prejudice that you can't possibly take it to heart. The fact is, though, that while most all people will "get it," it doesn't mean they will all appreciate it. It's a very polarizing and one dimensional show, so if you don't like it after 10 minutes, you may as well give up there. If you do like it after 10 minutes, stay tuned, because every episode thus far has been as good as the last.<br /><br />Like all shows, though, it is not perfect. Personally I love the program, but there are some huge faults with it. Racist songs are funny, but get older a lot faster than Silverman seems to realize--a problem that I had with "Jesus is Magic" as well. It seems as if Silverman gave herself a quota for songs per episode that doesn't need to exist. Not to mention that while the lyrics to the songs she writes are good, the music, well, isn't.<br /><br />Another thing to keep in mind is that while this show will for some reason appeal to fans of Monty Python, Upright Citizens Brigade, etc., it is nothing like those shows. I can watch Monty Python all day, but, as much as I like this show, I can't watch more than the half hour limit at a time. It gets flat very fast. The repeat value for this show is low too--the second time around an episode is fairly funny, and by the third time, in my opinion, it's boring.<br /><br />Still, that first time around is very, very funny. Give it a shot.
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i lie in bed or is it a coffin it feels more like a coffin not altogether unpleasant just very still i push my legs together and cross my hands i try not to cry i sink downwards hoping for a prick a poke a tube of fluid a needle of
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Not great if your are at the river and walking on ...
Not great if your are at the river and walking on rocks. They get stuck in the bottom. The bottom is a little thin too, so not as comfortable as I originally thought. They are lightweight and easy to put on.
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We present a set of compelling science cases for the ALMA Band 1 receiver
suite. For these cases, we assume in tandem the updated nominal Band 1
frequency range of 35-50 GHz with a likely extension up to 52 GHz; together
these frequencies optimize the Band 1 science return. The scope of the science
cases ranges from nearby stars to the re-ionization edge of the Universe. Two
cases provide additional leverage on the present ALMA Level One Science Goals
and are seen as particularly powerful motivations for building the Band 1
Receiver suite: (1) detailing the evolution of grains in protoplanetary disks,
as a complement to the gas kinematics, requires continuum observations out to
~35 GHz (~9mm); and (2) detecting CO 3-2 line emission from galaxies like the
Milky Way during the epoch of re-ionization, i.e., 6 < z < 10, also requires
Band 1 receiver coverage. The range of Band 1 science is wide, however, and
includes studies of very small dust grains in the ISM, pulsar wind nebulae,
radio supernovae, X-ray binaries, the Galactic Center (i.e., Sgr A*), dense
cloud cores, complex carbon-chain molecules, masers, magnetic fields in the
dense ISM, jets and outflows from young stars, distant galaxies, and galaxy
clusters (i.e., the Sunyaev-Zel'dovich Effect). A comparison of ALMA and the
Jansky VLA (JVLA) at the same frequencies of Band 1 finds similar sensitivity
performance at 40-50 GHz, with a slight edge for ALMA at higher frequencies
(e.g., within a factor of 2 for continuum observations). With its larger number
of instantaneous baselines, however, ALMA Band 1data will have greater fidelity
than those from the JVLA at similar frequencies.
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Nipple leaks with lid on
I really want to love these bottles but the one thing that drives me crazy is that when you put the lid on over the nipple, liquid still leaks out if turned upside down. The lid doesn’t push hard enough against the nipple. Other than that, I like the bottles. Am I doing something wrong?
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Using our new numerical-relativity code SACRA, long-term simulations for
inspiral and merger of black hole (BH)-neutron star (NS) binaries are
performed, focusing particularly on gravitational waveforms. As the initial
conditions, BH-NS binaries in a quasiequilibrium state are prepared in a
modified version of the moving-puncture approach. The BH is modeled by a
nonspinning moving puncture and for the NS, a polytropic equation of state with
$\Gamma=2$ and the irrotational velocity field are employed. The mass ratio of
the BH to the NS, $Q=M_{\rm BH}/M_{\rm NS}$, is chosen in the range between 1.5
and 5. The compactness of the NS, defined by ${\cal C}=GM_{\rm NS}/c^2R_{\rm
NS}$, is chosen to be between 0.145 and 0.178. For a large value of $Q$ for
which the NS is not tidally disrupted and is simply swallowed by the BH,
gravitational waves are characterized by inspiral, merger, and ringdown
waveforms. In this case, the waveforms are qualitatively the same as that from
BH-BH binaries. For a sufficiently small value of $Q \alt 2$, the NS may be
tidally disrupted before it is swallowed by the BH. In this case, the amplitude
of the merger and ringdown waveforms is very low, and thus, gravitational waves
are characterized by the inspiral waveform and subsequent quick damping. The
difference in the merger and ringdown waveforms is clearly reflected in the
spectrum shape and in the "cut-off" frequency above which the spectrum
amplitude steeply decreases. When an NS is not tidally disrupted (e.g., for
Q=5), kick velocity, induced by asymmetric gravitational wave emission, agrees
approximately with that derived for the merger of BH-BH binaries, whereas for
the case that the tidal disruption occurs, the kick velocity is significantly
suppressed.
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The existence of higher-spin quantum conserved currents in two dimensions
guarantees quantum integrability. We revisit the question of whether
classically-conserved local higher-spin currents in two-dimensional sigma
models survive quantization. We define an integrability index $\mathcal{I}(J)$
for each spin $J$, with the property that $\mathcal{I}(J)$ is a lower bound on
the number of quantum conserved currents of spin $J$. In particular, a positive
value for the index establishes the existence of quantum conserved currents.
For a general coset model, with or without extra discrete symmetries, we derive
an explicit formula for a generating function that encodes the indices for all
spins. We apply our techniques to the $\mathbb{CP}^{N-1}$ model, the $O(N)$
model, and the flag sigma model $\frac{U(N)}{U(1)^{N}}$. For the $O(N)$ model,
we establish the existence of a spin-6 quantum conserved current, in addition
to the well-known spin-4 current. The indices for the $\mathbb{CP}^{N-1}$ model
for $N>2$ are all non-positive, consistent with the fact that these models are
not integrable. The indices for the flag sigma model $\frac{U(N)}{U(1)^{N}}$
for $N>2$ are all negative. Thus, it is unlikely that the flag sigma models are
integrable.
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"More Islam is what the world needs. More Muslims to spread the Caliphate for Allah. Damn those Christians who stand in the way. Onward Muslim soldiers. Onward as to war !! Allah Akbar."
That is what we are not supposed to talk about no matter how many times it is proven to be true.
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Repeated root Cyclic and Negacyclic codes over Galois rings have been studied
much less than their simple root counterparts. This situation is beginning to
change. For example, repeated root codes of length $p^s$, where $p$ is the
characteristic of the alphabet ring, have been studied under some additional
hypotheses. In each one of those cases, the ambient space for the codes has
turned out to be a chain ring. In this paper, all remaining cases of cyclic and
negacyclic codes of length $p^s$ over a Galois ring alphabet are considered. In
these cases the ambient space is a local ring with simple socle but not a chain
ring. Nonetheless, by reducing the problem to one dealing with uniserial
subambients, a method for computing the Hamming distance of these codes is
provided.
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This paper presents the characterization of the optical range of the ALHAMBRA
photometric system, a 20 contiguous, equal-width, medium-band CCD system with
wavelength coverage from 3500A to 9700A. The photometric description of the
system is done by presenting the full response curve as a product of the
filters, CCD and atmospheric transmission curves, and using some first and
second order moments of this response function. We also introduce the set of
standard stars that defines the system, formed by 31 classic spectrophotometric
standard stars which have been used in the calibration of other known
photometric systems, and 288 stars, flux calibrated homogeneously, from the
Next Generation Spectral Library (NGSL). Based on the NGSL, we determine the
transformation equations between Sloan Digital Sky Survey (SDSS) ugriz
photometry and the ALHAMBRA photometric system, in order to establish some
relations between both systems. Finally we develop and discuss a strategy to
calculate the photometric zero points of the different pointings in the
ALHAMBRA project.
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This one was truly awful. Watching with fascinated horror, I kept on asking "why have they done this?" That is, taken all the scenarios out of "The Day after Tomorrow", "The Perfect Storm" and "Twister" and remixing them in a three-hour miniseries, directed by long-time junk TV director Dick Lowry, with every disaster movie cliché known to man and not an ounce of real suspense. Many of the cast were unknown Canadians and location filming was done in Canada, Winnepeg doubling for Chicago, so no doubt tax breaks had something to do with it. Although some ambitious special effects were attempted, the execution is so poor no decent spectacle is achieved. The actors may be a competent lot; the script is so bad no-one had a chance to show it, except perhaps for Randy Quaid as Tommy the Tornado chaser, who went right over the top and was quite amusing.<br /><br />Believe it or not, the producers have since made another one of these Canadian disaster turkeys called "Category 7 the End of the World" which was very tastefully shown on CBS in the US a few weeks after Hurricane Katrina. How could the network of Ed Murrow and Walter Cronkite do such a thing? In prime time? PT Barnum "nobody ever went broke underestimating public taste" is proved right once more.
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This is a fascinating account of the hunt for the Soviet Union's first known serial killer. I had tuned in, just expecting a half-decent TV movie, but found myself drawn by the compelling way the story was told. As others have said, there is much to admire here that is sadly lacking in many big screen releases.<br /><br />Much of the credit must go to Chris Gerolmo, whose intelligent screenplay and direction draw the viewer in, until it is impossible not to feel emotionally involved. The acting by the whole cast is also superb, especially that of the two leads, Stephen Rea and Donald Sutherland. Their convincing portrayals give their character arcs a great deal of credibility, and the scene where they have their first committee meeting after Perestroika is genuinely touching.<br /><br />If you prefer your crime films with a bit more depth and a little less sheen, I strongly recommend you look out for 'Citizen X'.<br /><br />
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Let $f: M \to N$ be a holomorphic map between two complex manifolds. Assume
$f$ is flat and sans \'{e}clatement en codimension 0 (no blowup in codimension
0). We study the theory of Lagrangian specialisation for such $f$, and prove a
Gonz\'{a}lez-Sprinberg type formula for the local Euler obstruction relative to
$f$. With the help of this formula and MacPherson's graph construction for the
vector bundle map $f^*T^*N \to T^*M$, we find the Lagrangian cycle of the
Milnor number constructible function $\mu$. As an application, we study the
Chern class transformation of $\mu$ when $f$ has finite contact type.
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A degree-$d$ polynomial $p$ in $n$ variables over a field $\F$ is {\em
equidistributed} if it takes on each of its $|\F|$ values close to equally
often, and {\em biased} otherwise. We say that $p$ has a {\em low rank} if it
can be expressed as a bounded combination of polynomials of lower degree. Green
and Tao [gt07] have shown that bias imply low rank over large fields (i.e. for
the case $d < |\F|$). They have also conjectured that bias imply low rank over
general fields. In this work we affirmatively answer their conjecture. Using
this result we obtain a general worst case to average case reductions for
polynomials. That is, we show that a polynomial that can be {\em approximated}
by few polynomials of bounded degree, can be {\em computed} by few polynomials
of bounded degree. We derive some relations between our results to the
construction of pseudorandom generators, and to the question of testing concise
representations.
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It is widely believed that Type Ia supernovae (SN Ia) originate in binary
systems where a white dwarf accretes material from a companion star until its
mass approaches the Chandrasekhar mass and carbon is ignited in the white
dwarf's core. This scenario predicts that the donor star should survive the
supernova explosion, providing an opportunity to understand the progenitors of
Type Ia supernovae.In this paper we argue that rotation is a generic signature
expected of most non-giant donor stars that is easily measurable.
\citep{2004Natur.431.1069R} examined stars in the center of the remnant of SN
1572 (Tycho's SN) and showed evidence that a subgiant star (Star G by their
naming convention) near the remnant's centre was the system's donor star. We
present high-resolution (R \simeq 40000) spectra taken with the High Dispersion
Spectrograph on Subaru of this candidate donor star and measure the star's
radial velocity as $79\pm 2$ \kms with respect to the LSR and put an upper
limit on the star's rotation of 7.5 \kms. In addition, by comparing images that
were taken in 1970 and 2004, we measure the proper motion of Star G to be
$\mu_l = -1.6 \pm 2.1$ \masyr and $\mu_b = -2.7 \pm 1.6$ \masyr. We demonstrate
that all of the measured properties of Star G presented in this paper are
consistent with those of a star in the direction of Tycho's SN that is not
associated with the supernova event. However, we discuss an unlikely, but still
viable scenario for Star G to be the donor star, and suggest further
observations that might be able to confirm or refute it.
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We use spherically symmetric hydrodynamic simulations to study the dynamical
evolution and internal structure of superbubbles (SBs) driven by clustered
supernovae (SNe), focusing on the effects of thermal conduction and cooling in
the interface between the hot bubble interior and cooled shell. Our simulations
employ an effective diffusivity to account for turbulent mixing from nonlinear
instabilities that are not captured in 1D. The conductive heat flux into the
shell is balanced by a combination of cooling in the interface and evaporation
of shell gas into the bubble interior. This evaporation increases the density,
and decreases the temperature, of the SB interior by more than an order of
magnitude relative to simulations without conduction. However, most of the
energy conducted into the interface is immediately lost to cooling, reducing
the evaporative mass flux required to balance conduction. As a result, the
evaporation rate is typically a factor of $\sim$3-30 lower than predicted by
the classical similarity solution of Weaver et al. (1977), which neglects
cooling. Blast waves from the first $\sim$30 SNe remain supersonic in the SB
interior because reduced evaporation from the interface lowers the mass they
sweep up in the hot interior. Updating the Weaver solution to include cooling,
we construct a new analytic model to predict the cooling rate, evaporation
rate, and temporal evolution of SBs. The cooling rate, and hence the hot gas
mass, momentum, and energy delivered by SBs, is set by the ambient ISM density
and the efficiency of nonlinear mixing at the bubble/shell interface.
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The recent experimental realization of spin-orbit (SO) coupling for ultracold
bosons and fermions opens an exciting avenue for engineering quantum matter
that may be challenging to realize in solid state materials such as SO coupled
spin-1 fermions. While one-dimensional SO coupling for spin-1 bosons has been
experimentally realized, the generation of two-dimensional (2D) SO coupling and
its topological properties are largely unexplored. Here we propose an
experimental scheme for realizing a 2D Dresselhaus-type SO coupling in a square
lattice for spin-1 Fermi gases. Because of the extended spin degree of freedom,
many interesting topological phases could exist without relying on lattice
point group symmetries that are crucial in solid state materials. These exotic
phases include triply-degenerate points, quadratic band touching, a large Chern
number ($C=5$) superfluid with 5 Majorana modes, triple-Weyl fermions, etc. Our
scheme can be generalized to larger spins and provides a new route for
engineering topological quantum matter by utilizing large spin degrees of
freedom, instead of specific lattice symmetries.
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There has been recent interest in the cosmological consequences of
energy-momentum-powered gravity models, in which the matter side of Einstein's
equations is modified by the addition of a term proportional to some power,
$n$, of the energy-momentum tensor, in addition to the canonical linear term.
In this work we treat these models as phenomenological extensions of the
standard $\Lambda$CDM, containing both matter and a cosmological constant. We
also quantitatively constrain the additional model parameters using low
redshift background cosmology data that are specifically from Type Ia
supernovas and Hubble parameter measurements. We start by studying specific
cases of these models with fixed values of $n,$ which lead to an analytic
expression for the Friedmann equation; we discuss both their current
constraints and how the models may be further constrained by future
observations of Type Ia supernovas for WFIRST complemented by measurements of
the redshift drift by the ELT. We then consider and constrain a more extended
parameter space, allowing $n$ to be a free parameter and considering scenarios
with and without a cosmological constant. These models do not solve the
cosmological constant problem per se. Nonetheless these models can
phenomenologically lead to a recent accelerating universe without a
cosmological constant at the cost of having a preferred matter density of
around $\Omega_M\sim0.4$ instead of the usual $\Omega_M\sim0.3$. Finally we
also briefly constrain scenarios without a cosmological constant, where the
single component has a constant equation of state which needs not be that of
matter; we provide an illustrative comparison of this model with a more
standard dynamical dark energy model with a constant equation of state.
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This is smaller than the previous exact same one
This is the second Premium Leather Belt Clip Pouch Case for Samsung Galaxy S5, S6 and S6 Edge (Fits with Otterbox Case I purchased. I wore the first one out and liked it so I purchased another. The Quality is fine. The issue is the newer one is just a little smaller and does not work with my Samsung galaxy 6 with the Otterbox Defender Case on it. The Defender case is large and it is too tight.
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We present a general framework of semi-supervised dimensionality reduction
for manifold learning which naturally generalizes existing supervised and
unsupervised learning frameworks which apply the spectral decomposition.
Algorithms derived under our framework are able to employ both labeled and
unlabeled examples and are able to handle complex problems where data form
separate clusters of manifolds. Our framework offers simple views, explains
relationships among existing frameworks and provides further extensions which
can improve existing algorithms. Furthermore, a new semi-supervised
kernelization framework called ``KPCA trick'' is proposed to handle non-linear
problems.
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Compact nonlocal Abelian gauge theory in (2+1) dimensions, also known as loop
model, is a massless theory with a critical line that is explicitly covariant
under duality transformations. It corresponds to the large N_F limit of
self-dual electrodynamics in mixed three-four dimensions. It also provides a
bosonic description for surface excitations of three-dimensional topological
insulators. Upon mapping the model to a local gauge theory in (3+1) dimensions,
we compute the spectrum of electric and magnetic solitonic excitations and the
partition function on the three torus T_3. Analogous results for the S^2 x S^1
geometry show that the theory is conformal invariant and determine the
manifestly self-dual spectrum of conformal fields, corresponding to
order-disorder excitations with fractional statistics.
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Today's industrial sensor networks require strong reliability and guarantees
on messages delivery. These needs are even more important in real time
applications like control/command, such as robotic wireless communications
where strong temporal constraints are critical. For these reasons, classical
random-based Medium Access Control (MAC) protocols present a non-null frame
collision probability. In this paper we present an original full deterministic
MAC-layer for industrial wireless network and its performance evaluation thanks
to the development of a material prototype.
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We consider geometric variational problems for a functional defined on a
curve in three-dimensional space. The functional is assumed to be written in a
form invariant under the group of Euclidean motions. We present the
Euler-Lagrange equations as equilibrium equations for the internal force and
moment. Classical as well as new examples are discussed to illustrate our
approach. This new form of the equations particularly serves to promote the
study of bio- and nanofilaments.
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I have seen several comments here about Brando using a Southern accent, some of which felt it was a mistake. When this movie was made, racism and discrimination were very strong in the South. The Jim Crow laws were still in effect. Civil Rights was in it's infancy. Could this have possibly been a subtle social commentary, a Southern man in love with a woman of another race? The same way MASH was a subtle criticism of the Viet Nam war? Any thoughts?<br /><br />Another comment was made about Myoshi Umeki appearing "cold". Anyone who has been in Japan would understand. The Japanese people, at least in my experience, did not tend to show emotion in front of strangers. There were strict social rules, especially for men meeting single women. Americans in Japan were totally foreign to this culture, and the blunt attempts to meet women were shocking to the ladies. One trait of the Japanese was to smile when embarrassed or uncomfortable, which many American servicemen took as a sign that their advances were welcomed. Also remember that at the time represented in the movie, Japan had just been defeated, and the occupying forces were treated with reluctant acceptance. I think Myoshi Umeki gave a very credible performance of what her situation would have been. Watching her interaction with the American actors brought back several memories of my own experiences in the country. I was able to meet a pair of lovely young ladies who, after I convinced them I was not the typical American male, taught me their language and their culture during my time in their country.
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The surface area of turbulent/non-turbulent interfaces (TNTIs) is
continuously produced and destroyed via stretching and curvature/propagation
effects. Here, the mechanisms responsible for TNTI area growth and destruction
are investigated in a turbulent flow with and without stable stratification
through the time evolution equation of the TNTI area. We show that both terms
have broad distributions and may locally contribute to either production or
destruction. On average, however, the area growth is driven by stretching,
which is approximately balanced by destruction by the curvature/propagation
term. To investigate the contribution of different length scales to these
processes, we apply spatial filtering to the data. In doing so, we find that
the averages of the stretching and the curvature/propagation terms balance out
across spatial scales of TNTI wrinkles and this scale-by-scale balance is
consistent with an observed scale invariance of the nearby coherent vortices.
Through a conditional analysis, we demonstrate that the TNTI area production
(destruction) localizes at the front (lee) edge of the vortical structures in
the interface proximity. Finally, we show that while basic mechanisms remain
the same, increasing stratification reduces the rates at which TNTI surface
area is produced as well as destroyed. We provide evidence that this reduction
is largely connected to a change in the multiscale geometry of the interface,
which tends to flatten in the wall-normal direction at all active length scales
of the TNTI.
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Current State-of-the-Art models in Named Entity Recognition (NER) are neural
models with a Conditional Random Field (CRF) as the final network layer, and
pre-trained "contextual embeddings". The CRF layer is used to facilitate global
coherence between labels, and the contextual embeddings provide a better
representation of words in context. However, both of these improvements come at
a high computational cost. In this work, we explore two simple techniques that
substantially improve NER performance over a strong baseline with negligible
cost. First, we use multiple pre-trained embeddings as word representations via
concatenation. Second, we constrain the tagger, trained using a cross-entropy
loss, during decoding to eliminate illegal transitions. While training a tagger
on CoNLL 2003 we find a $786$\% speed-up over a contextual embeddings-based
tagger without sacrificing strong performance. We also show that the
concatenation technique works across multiple tasks and datasets. We analyze
aspects of similarity and coverage between pre-trained embeddings and the
dynamics of tag co-occurrence to explain why these techniques work. We provide
an open source implementation of our tagger using these techniques in three
popular deep learning frameworks --- TensorFlow, Pytorch, and DyNet.
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