text
stringlengths 231
473k
|
|---|
Jean Luc Godard's Marxist polemic is as close to unwatchable a film as you're likely to see from an internationally respected filmmaker. Bits of political theater, mind-numbingly boring and interminable, are interspersed with the making of "Sympathy for the Devil", featuring the Rolling Stones in the studio.<br /><br />The process of the song's development, from Mick Jagger playing a demo on acoustic guitar, to the backing vocals being recorded towards the end, is fascinating, and it's worth renting this film just to see the bits with the Stones. Almost half the movie is devoted to this, so thanks to the miracle of chapter stops, you can skip all the bizarre political skits and just watch the Stones put a song together.<br /><br />When I had this on laserdisc, I valiantly attempted to watch it all, but I don't see how anyone could get through it. I finally gave up and just chapter-skipped my way to the Stones segments.
|
Aims. Taking account of steady flow in solar prominences, we study its
effects on spatial damping of small-amplitude non-adiabatic magnetoacoustic
waves in a homogeneous, isothermal, and unbounded prominence plasma. Methods.
We model the typical feature of observed damped oscillatory motion in
prominences, removing the adiabaticity assumption through thermal conduction,
radiation and heating. Invoking steady flow in MHD equations, we linearise them
under small-amplitude approximation and obtain a new general dispersion
relation for linear non-adiabatic magnetoacoustic waves in prominences Results.
The presence of steady flow breaks the symmetry of forward and backward
propagating MHD wave modes in prominences. The steady flow has dramatic
influence on the propagation and damping of magnetoacoustic and thermal waves.
Depending upon the direction and strength of flow the magnetoacoustic and
thermal modes can show both the features of wave amplification and damping. At
the wave period of 5 min where the photospheric power is maximum, the slow mode
shows wave amplification. However, in the absence of steady flow the slow mode
wave shows damping. Conclusions. For the wave period between 5 min and 15 min,
the amplification length for slow mode, in the case of prominence regime 1.1,
varies between 3.4*10^11 m to 2*10^12 m. Dramatic influence of steady flow on
small-amplitude prominence oscillations is likely to play an important role in
both wave detection and prominence seismology.
|
Stellar population (SP) models are an essential tool to understand the
observations of galaxies and clusters. One of the main ingredients of a SP
model is a library of stellar spectra, and both empirical and theoretical
libraries can been used for this purpose. Here I will start by giving a short
overview of the pros and cons of using theoretical libraries, i.e. model stars,
to produce our galaxy models. Then I will address the question on how
theoretical libraries can be used to model stellar populations, in particular
to explore the effect of $\alpha$-enhancement on spectral observables.
|
Naturalistic driving trajectories are crucial for the performance of
autonomous driving algorithms. However, most of the data is collected in safe
scenarios leading to the duplication of trajectories which are easy to be
handled by currently developed algorithms. When considering safety, testing
algorithms in near-miss scenarios that rarely show up in off-the-shelf datasets
is a vital part of the evaluation. As a remedy, we propose a near-miss data
synthesizing framework based on Variational Bayesian methods and term it as
Conditional Multiple Trajectory Synthesizer (CMTS). We leverage a generative
model conditioned on road maps to bridge safe and collision driving data by
representing their distribution in the latent space. By sampling from the
near-miss distribution, we can synthesize safety-critical data crucial for
understanding traffic scenarios but not shown in neither the original dataset
nor the collision dataset. Our experimental results demonstrate that the
augmented dataset covers more kinds of driving scenarios, especially the
near-miss ones, which help improve the trajectory prediction accuracy and the
capability of dealing with risky driving scenarios.
|
For the first time post-1945, (with the possible exception of the Frei Demokratische Partei (FDP)), both the German ruling parties and opposition parties are staunchly anti-American.
Gone are the days of Konrad Adenauer, Willy Brandt, Helmut Kohl, and even G. Schröder (even Schröder played nice with the Americans before he went to work for Putin).
This means that US must be very careful with its remaining allies: the UK, Australia, the RoK, and Japan as she faces existential threats from NK, China, Russia, and Iran.
In case of any conflict -- e.g. with NK -- Germany would probably remain neutral, even if NK attacked the US first.
Germany would be mostly useless if Putin attacked the Baltic States.
Under Merkel Germany has drifted closer to totalitarian regimes such as China and Iran, thereby fatally undermining the NATO alliance.
Hence it could be plausibly argued that Merkel's goal has been to undermine the West and that she has succeeded in realizing her goal.
Sehr schlecht.
|
Using data from Gaia DR2, we study the radial number density profiles of the
Galactic globular cluster sample. Proper motions are used for accurate
membership selection, especially crucial in the cluster outskirts. Due to the
severe crowding in the centres, the Gaia data is supplemented by literature
data from HST and surface brightness measurements, where available. This
results in 81 clusters with a complete density profile covering the full tidal
radius (and beyond) for each cluster. We model the density profiles using a set
of single-mass models ranging from King and Wilson models to generalised
lowered isothermal limepy models and the recently introduced spes models, which
allow for the inclusion of potential escapers. We find that both King and
Wilson models are too simple to fully reproduce the density profiles, with King
(Wilson) models on average underestimating(overestimating) the radial extent of
the clusters. The truncation radii derived from the limepy models are similar
to estimates for the Jacobi radii based on the cluster masses and their orbits.
We show clear correlations between structural and environmental parameters, as
a function of Galactocentric radius and integrated luminosity. Notably, the
recovered fraction of potential escapers correlates with cluster pericentre
radius, luminosity and cluster concentration. The ratio of half mass over
Jacobi radius also correlates with both truncation parameter and PE fraction,
showing the effect of Roche lobe filling.
|
This paper is a continuation of [GLT], which develops a level theory and
establishes strong character bounds for finite simple groups of linear and
unitary type in the case that the centralizer of the element has small order
compared to $|G|$ in a logarithmic sense. We strengthen the results of [GLT]
and extend them to all groups of classical type.
|
We propose a nonparametric test of independence, termed optHSIC, between a
covariate and a right-censored lifetime. Because the presence of censoring
creates a challenge in applying the standard permutation-based testing
approaches, we use optimal transport to transform the censored dataset into an
uncensored one, while preserving the relevant dependencies. We then apply a
permutation test using the kernel-based dependence measure as a statistic to
the transformed dataset. The type 1 error is proven to be correct in the case
where censoring is independent of the covariate. Experiments indicate that
optHSIC has power against a much wider class of alternatives than Cox
proportional hazards regression and that it has the correct type 1 control even
in the challenging cases where censoring strongly depends on the covariate.
|
We introduce a topological combinatorial game called the Region Smoothing
Swap Game. The game is played on a game board derived from the connected shadow
of a link diagram on a (possibly non-orientable) surface by smoothing at
crossings. Moves in the game are performed on regions of the diagram and can
switch the direction of certain crossings' smoothing. The players' goals relate
to the connectedness of the diagram produced by game play.
|
Recent advances on quantum computing hardware have pushed quantum computing
to the verge of quantum supremacy. Random quantum circuits are outstanding
candidates to demonstrate quantum supremacy, which could be implemented on a
quantum device that supports nearest-neighbour gate operations on a
two-dimensional configuration. Here we show that using the Projected
Entangled-Pair States algorithm, a tool to study two-dimensional strongly
interacting many-body quantum systems, we can realize an effective
general-purpose simulator of quantum algorithms. This technique allows to
quantify precisely the memory usage and the time requirements of random quantum
circuits, thus showing the frontier of quantum supremacy. With this approach we
can compute the full wave-function of the system, from which single amplitudes
can be sampled with unit fidelity. Applying this general quantum circuit
simulator we measured amplitudes for a $7\times 7$ lattice of qubits with depth
$1+40+1$ and double-precision numbers in 31 minutes using less than $93$ TB
memory on the Tianhe-2 supercomputer.
|
We introduce the unification of dynamical mean field theory (DMFT) and
linear-scaling density functional theory (DFT), as recently implemented in
ONETEP, a linear-scaling DFT package, and TOSCAM, a DMFT toolbox. This code can
account for strongly correlated electronic behavior while simultaneously
including the effects of the environment, making it ideally suited for studying
complex and heterogeneous systems containing transition metals and lanthanides,
such as metalloproteins. We systematically introduce the necessary formalism,
which must account for the non-orthogonal basis set used by ONETEP. In order to
demonstrate the capabilities of this code, we apply it to carbon
monoxide-ligated iron porphyrin and explore the distinctly quantum-mechanical
character of the iron $3d$ electrons during the process of photodissociation.
|
Localizing a cloud of points from noisy measurements of a subset of pairwise
distances has applications in various areas, such as sensor network
localization and reconstruction of protein conformations from NMR measurements.
In [1], Drineas et al. proposed a natural two-stage approach, named SVD-MDS,
for this purpose. This approach consists of a low-rank matrix completion
algorithm, named SVD-Reconstruct, to estimate random missing distances, and the
classic multidimensional scaling (MDS) method to estimate the positions of
nodes. In this paper, we present a detailed analysis for this method. More
specifically, we first establish error bounds for Euclidean distance matrix
(EDM) completion in both expectation and tail forms. Utilizing these results,
we then derive the error bound for the recovered positions of nodes. In order
to assess the performance of SVD-Reconstruct, we present the minimax lower
bound of the zero-diagonal, symmetric, low-rank matrix completion problem by
Fano's method. This result reveals that when the noise level is low, the
SVD-Reconstruct approach for Euclidean distance matrix completion is suboptimal
in the minimax sense; when the noise level is high, SVD-Reconstruct can achieve
the optimal rate up to a constant factor.
|
In fact I almost feel like it made him more active rather than calming him
I really don't think I could tell a difference after giving this to my dog. In fact I almost feel like it made him more active rather than calming him. He did enjoy eating the treat size morsel so it wasn't difficult to get my dog to eat.
|
We report the first NMR investigation of spin dynamics in the overdoped
non-superconducting regime of Ba(Fe[1-x]Co[x])2As2 up to x =0.26. We
demonstrate that the absence of inter-band transitions with large momentum
transfer Q(AF) ~ (pi, 0) between the hole and electron Fermi surfaces results
in complete suppression of antiferromagnetic spin fluctuations for x > 0.15.
Our experimental results provide direct evidence for a correlation between Tc
and the strength of Q(AF) antiferromagnetic spin fluctuations.
|
The acting was not great but it wasn't so terrible that I hated the ...
The acting was not great but it wasn't so terrible that I hated the film. I actually likeed the story but like everyone else I didn't like the ending. Unfortunately this ending happens sometimes in reality so it's not that far off. I think Remy Mars has some potential but he should take some acting classes to work on his inflection to make what he's saying come to life a little more. Overall I think it was a good effort for people who have not been in any type of movie that didn't require them to actually just be porn actors. (i.e. The Skinny or anything on Signal 23) I would probably watch it again.
|
The concept of hyperuniformity has been introduced by Torquato and Stillinger
in 2003 as a notion to detect structural behaviour intermediate between
amorphous disorder and crystalline order. The present paper studies a
generalisation of this concept to the unit sphere. It is shown that several
well studied determinantal point processes are hyperuniform, one recently
introduced process, the projective ensemble, is shown not to be hyperuniform.
|
Power Switch failed to work.
Received product on time, however the product failed to work. I hired a professional to install the this product. When installed the Bluetooth worked perfectly, however the power buttons failed to work. The professional said that these were faulty switches. I would not recommend this product based on the professional installers advice. I have a Ashley power recliner with a Apex motor.
|
Water bottles
I thought I was getting a VARIETY of different colored caps and bottles as it shows in the picture. But all four are exactly the same Yellow neon color. The reason why I wanted colored coded bottles is because I make smoothies and do juicing and I didn't want the veggies and fruits to be used in the same bottle. green juicing tends to stain bottles or give it a funny smell. So I wanted to keep that bottle for veggies. but they are all the same color, I had to permanently mark the bottoms. Wish they were as advertised as that was my reason for buying them. Overall all a great bottle, not to big for my commuter bag, fits on my bike bottle holder, the hook can hook around your finger so you don't have to constantly hold it in your hand .... But the colors are not what you see in the picture.
|
Spinless Salpeter equation for two bound particles is analyzed. We use the
fact that in relativistic kinematics the spatial two particle relative momentum
is relativistic invariant. Free particle hypothesis for the bound state is
developed: comstituents move as free particles inside of the system. The
Shr\"odinger-type wave equation is derived. Three equivalent forms of the
eigenvalue equation are given. Relative motion of quarks in eigen states is
described by the asymptotic solution in the form of the standing wave of
$\cos(kx+a)$ for each spatial degree of freedom. To test the model the spin
center-of-gravity energy levels for the hydrogen atom are calculated and
compared with the NIST data. Complex eigenmasses for the $H$ atom are obtained.
|
We show that techniques of spatial adiabatic passage can be used to realise
an electron interferometer in a geometry analogous to a conventional
Aharonov-Bohm ring, with transport of the particle through the device modulated
using coherent transport adiabatic passage. This device shows an interesting
interplay between the adiabatic and non-adiabatic behaviour of the system. The
transition between non-adiabatic and adiabatic behaviour may be tuned via
system parameters and the total time over which the protocol is enacted.
Interference effects in the final state populations analogous to the
electrostatic Aharonov-Bohm effect are observed.
|
Characterisation of the long-term variations in the broad line region in a
luminous blazar, where Comptonisation of broad-line emission within a
relativistic jet is the standard scenario for production of gamma-ray emission
that dominates the spectral energy distribution. We analysed ten years of
optical spectroscopic data from the Steward Observatory for the blazar 3C
454.3, as well as gamma-ray data from the Fermi Large Area Telescope (LAT). The
optical spectra are dominated by a highly variable non-thermal synchrotron
continuum with a prominent Mg II broad emission line. The line flux was
obtained by spectral decomposition including significant contribution from the
Fe II pseudo-continuum. Three methods were used to characterise variations in
the line flux: (1) stacking of the continuum-subtracted spectra, (2)
subtracting the running mean light curves calculated for different timescales,
and (3) evaluating potential time delays via the discrete correlation function
(DCF). Despite very large variations in the gamma-ray and optical continua, the
line flux changes only moderately (< 0.1 dex). The data suggest that the line
flux responds to a dramatic change in the blazar activity from a very high
state in 2010 to a deep low state in 2012. Two interpretations are possible:
either the line flux is anti-correlated with the continuum or the increase in
the line luminosity is delayed by ~600 days. If this time delay results from
the reverberation of poorly constrained accretion disc emission in both the
broad-line region (BLR) and the synchrotron emitting blazar zone within a
relativistic jet, we would obtain natural estimates for the BLR radius
[R_{BLR,MgII} >~ 0.28 pc] and for the supermassive black hole mass [M_SMBH ~
8.5x10^8 M_sun]. We did not identify additional examples of short-term 'flares'
of the line flux, in addition to the previously reported case observed in 2010.
|
Good for fashion statement..
These are awesome mittens good for hanging onto the steering wheel in just going into town and for fashion they will not keep your hands warm for a long time they are not very thick they are thin but very beautiful I bought these just to go into town and back for fashion fashion fashion...
|
Sturdy
My toddler is hard on crayons, as is typical. These are great because she's less inclined to break them when she's gripping them properly. In addition, they don't roll off the table all the time, so I'm able to spend more time coloring with her instead of constantly picking them up. I'm very pleased, all the way around!
|
wondering how long smell will last length is good color is nice medium blue not light or dark ...
smells extreme strong chemical smell my whole bathroom stinks, wondering how long smell will last length is good color is nice medium blue not light or dark suction cups work good BUT SMELL IS VERY BAD!!!!!! plastic rubber smell extremely STRONG!!
|
We investigate the effects of (2+1)d event-by-event fluctuating hydrodynamic
backgrounds on the nuclear modification factor and momentum anisotropies of
heavy-flavor mesons. Using the state-of-the-art D and B mesons modular
simulation code (the so-called DAB-mod), updated recently with heavy-light
quark coalescence, we perform a systematic comparison of different transport
equations, including two energy loss models and a relativistic Langevin model
with two drag parametrizations. We present the resulting D$^0$ meson $R_{AA}$,
$v_2$ and $v_3$, using the multiparticle cumulant method, in Pb-Pb collisions
at $\sqrt{s_{\rm NN}}=5.02$ TeV and compare them to the latest experimental
data. We investigate the $v_2\{4\}/v_2\{2\}$ ratio as a function of centrality
for different initial conditions (MCKLN vs. Trento) and different system
geometries and sizes (coming from Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$
TeV, spherical and prolate Xe-Xe collisions at $\sqrt{s_{\rm NN}}=5.44$ TeV).
|
Microblogs are widely used to express people's opinions and feelings in daily
life. Sentiment analysis (SA) can timely detect personal sentiment polarities
through analyzing text. Deep learning approaches have been broadly used in SA
but still have not fully exploited syntax information. In this paper, we
propose a syntax-based graph convolution network (GCN) model to enhance the
understanding of diverse grammatical structures of Chinese microblogs. In
addition, a pooling method based on percentile is proposed to improve the
accuracy of the model. In experiments, for Chinese microblogs emotion
classification categories including happiness, sadness, like, anger, disgust,
fear, and surprise, the F-measure of our model reaches 82.32% and exceeds the
state-of-the-art algorithm by 5.90%. The experimental results show that our
model can effectively utilize the information of dependency parsing to improve
the performance of emotion detection. What is more, we annotate a new dataset
for Chinese emotion classification, which is open to other researchers.
|
Excellent Case!!!
This is the best case I ever bought for any phone I have ever owned. The built-in front screen protector has all the correct cutouts for camera, speakers and sensors. The edge of the case is made of soft rubber that provides easy grip and the back is clear hard plastic (you can actually see your phone). The cut-out for the USB-C connector is big enough to actually allow for the headphone connector to fit properly and at the top of the case there is a cut-out for the microphone.
|
To aid the development of spreadsheet debugging tools, a knowledge of
end-users natural behaviour within the Excel environment would be advantageous.
This paper details the design and application of a novel data acquisition tool,
which can be used for the unobtrusive recording of end-users mouse, keyboard
and Excel specific actions during the debugging of Excel spreadsheets. A
debugging experiment was conducted using this data acquisition tool, and based
on analysis of end-users performance and behaviour data, the authors developed
a "spreadsheet cell coverage feedback" debugging tool. Results from the
debugging experiment are presented in terms of enduser debugging performance
and behaviour, and the outcomes of an evaluation experiment with the debugging
tool are detailed.
|
In Twitter, there is a rising trend in abusive behavior which often leads to
incivility. This trend is affecting users mentally and as a result they tend to
leave Twitter and other such social networking sites thus depleting the active
user base. In this paper, we study factors associated with incivility. We
observe that the act of incivility is highly correlated with the opinion
differences between the account holder (i.e., the user writing the incivil
tweet) and the target (i.e., the user for whom the incivil tweet is meant for
or targeted), toward a named entity. We introduce a character level CNN model
and incorporate the entity-specific sentiment information for efficient
incivility detection which significantly outperforms multiple baseline methods
achieving an impressive accuracy of 93.3% (4.9% improvement over the best
baseline). In a post-hoc analysis, we also study the behavioral aspects of the
targets and account holders and try to understand the reasons behind the
incivility incidents. Interestingly, we observe that there are strong signals
of repetitions in incivil behavior. In particular, we find that there are a
significant fraction of account holders who act as repeat offenders - attacking
the targets even more than 10 times. Similarly, there are also targets who get
targeted multiple times. In general, the targets are found to have higher
reputation scores than the account holders.
|
Context: This is the first of a series of papers presenting VLBI observations
of the 293 Caltech-Jodrell Bank Flat-Spectrum (hereafter CJF) sources and their
analysis. Aims: One of the major goals of the CJF is to make a statistical
study of the apparent velocities of the sources. Methods: We have conducted
global VLBI and VLBA observations at 5 GHz since 1990, accumulating thirteen
separate observing campaigns. Results: We present here an overview of the
observations, give details of the data reduction and present the source
parameters resulting from a model-fitting procedure. For every source at every
observing epoch, an image is shown, built up by restoring the model-fitted
components, convolved with the clean beam, into the residual image, which was
made by Fourier transforming the visibility data after first subtracting the
model-fitted components in the uv-plane. Overplotted we show symbols to
represent the model components. Conclusions: We have produced VLBI images of
all but 5 of the 293 sources in the complete CJF sample at several epochs and
investigated the kinematics of 266 AGN.
|
Given a graph $G$ of $n$ vertices, where each vertex is initially attached an
opinion of either red or blue. We investigate a random process known as the
Best-of-three voting. In this process, at each time step, every vertex chooses
three neighbours at random and adopts the majority colour. We study this
process for a class of graphs with minimum degree $d = n^{\alpha}$\,, where
$\alpha = \Omega\left( (\log \log n)^{-1} \right)$. We prove that if initially
each vertex is red with probability greater than $1/2+\delta$, and blue
otherwise, where $\delta \geq (\log d)^{-C}$ for some $C>0$, then with high
probability this dynamic reaches a final state where all vertices are red
within $O\left( \log \log n\right) + O\left( \log \left( \delta^{-1} \right)
\right)$ steps.
|
We study Laplace-type operators on hybrid manifolds, i.e. on configurations
consisting of closed two-dimensional manifolds and one-dimensional segments.
Such an operator can be constructed by using the Laplace-Beltrami operators on
each component with some boundary conditions at the points of gluing. The large
spectral parameter expansion of the trace of the second power of the resolvent
is obtained. Some questions of the inverse spectral theory are adressed.
|
We demonstrate how the observed H2O ice column densities toward three dense
globules in the Southern Coalsack could be used to constrain the ages of these
sources. We derive ages of ~10^5 yr, in agreement with dynamical studies of
these objects. We have modelled the chemical evolution of the globules, and
show how the molecular abundances are controlled by both the gas density and
the initial chemical conditions as the globules formed. Based on our derived
ages, we predict the column densities of several species of interest. These
predictions should be straightforward to test by performing molecular line
observations
|
We consider a family $\{L_t,\, t\in [0,T]\}$ of closed operators generated by
a family of regular (non-symmetric) Dirichlet forms $\{(B^{(t)},V),t\in[0,T]\}$
on $L^2(E;m)$. We show that a bounded (signed) measure $\mu$ on $(0,T)\times E$
is smooth, i.e. charges no set of zero parabolic capacity associated with
$\frac{\partial}{\partial t}+L_t$, if and only if $\mu$ is of the form
$\mu=f\cdot m_1+g_1+\partial_tg_2$ with $f\in L^1((0,T)\times E;dt\otimes m)$,
$g_1\in L^2(0,T;V')$, $g_2\in L^2(0,T;V)$. We apply this decomposition to the
study of the structure of additive functionals in the Revuz correspondence with
smooth measures. As a by-product, we also give some existence and uniqueness
results for solutions of semilinear equations involving the operator
$\frac{\partial}{\partial t}+L_t$ and a functional from the dual $\mathcal{W}'$
of the space $\mathcal{W}=\{u\in L^2(0,T;V):\partial_t u\in L^2(0,T;V')\}$ on
the right-hand side of the equation.
|
Automatic emotion recognition is a challenging task. In this paper, we
present our effort for the audio-video based sub-challenge of the Emotion
Recognition in the Wild (EmotiW) 2018 challenge, which requires participants to
assign a single emotion label to the video clip from the six universal emotions
(Anger, Disgust, Fear, Happiness, Sad and Surprise) and Neutral. The proposed
multimodal emotion recognition system takes audio, video and text information
into account. Except for handcraft features, we also extract bottleneck
features from deep neutral networks (DNNs) via transfer learning. Both temporal
classifiers and non-temporal classifiers are evaluated to obtain the best
unimodal emotion classification result. Then possibilities are extracted and
passed into the Beam Search Fusion (BS-Fusion). We test our method in the
EmotiW 2018 challenge and we gain promising results. Compared with the baseline
system, there is a significant improvement. We achieve 60.34% accuracy on the
testing dataset, which is only 1.5% lower than the winner. It shows that our
method is very competitive.
|
We consider symplectic cohomology twisted by sphere bundles, which can be
viewed as an analogue of local systems. Using the associated Gysin exact
sequence, we prove the uniqueness of part of the ring structure on cohomology
of fillings for those asymptotically dynamically convex manifolds with
vanishing property considered in [30,31]. In particular, for simply connected
$4n+1$ dimensional flexible fillable contact $Y$, we show that real cohomology
$H^*(W)$ is unique as a ring for any Liouville filling $W$ of $Y$ as long as
$c_1(W)=0$. Uniqueness of real homotopy type of Liouville fillings is also
obtained for a class of flexibly fillable contact manifolds.
|
CUPID-0 is the first large mass array of enriched Zn$^{82}$Se scintillating
low temperature calorimeters, operated at LNGS since 2017. During its first
scientific runs, CUPID-0 collected an exposure of 9.95 kg yr. Thanks to the
excellent rejection of $\alpha$ particles, we attained the lowest background
ever measured with thermal detectors in the energy region where we search for
the signature of $^{82}$Se neutrinoless double beta decay. In this work we
develop a model to reconstruct the CUPID-0 background over the whole energy
range of experimental data. We identify the background sources exploiting their
distinctive signatures and we assess their extremely low contribution (down to
$\sim10^{-4}$ counts/(keV kg yr)) in the region of interest for $^{82}$Se
neutrinoless double beta decay search. This result represents a crucial step
towards the comprehension of the background in experiments based on
scintillating calorimeters and in next generation projects such as CUPID.
|
This paper proves universality of the distribution of the smallest and
largest gaps between eigenvalues of generalized Wigner matrices, under some
smoothness assumption for the density of the entries.
The proof relies on the Erd{\H o}s-Schlein-Yau dynamic approach. We exhibit a
new observable that satisfies a stochastic advection equation and reduces local
relaxation of the Dyson Brownian motion to a maximum principle. This observable
also provides a simple and unified proof of universality in the bulk and at the
edge, which is quantitative. To illustrate this, we give the first explicit
rate of convergence to the Tracy-Widom distribution for generalized Wigner
matrices.
|
Indians, Native Americans if you wish, should be on the warpath against Warren for claiming she was Native American to get preferential treatment in advancing her legal and academic careers without any evidence to prove her claimed Native American ancestry. I believe she is a “transracer. It is a mental disorder known as “race dysphoria” or “race identity disorder.”
|
Using embeddings as representations of products is quite commonplace in
recommender systems, either by extracting the semantic embeddings of text
descriptions, user sessions, collaborative relationships, or product images. In
this paper, we present an approach to extract style embeddings for using in
fashion recommender systems, with a special focus on style information such as
textures, prints, material, etc. The main issue of using such a type of
embeddings is its high dimensionality. So, we propose feature reduction
solutions alongside the investigation of its influence in the overall task of
recommending products of the same style based on their main image. The feature
reduction we propose allows for reducing the embedding vector from 600k
features to 512, leading to a memory reduction of 99.91\% without critically
compromising the quality of the recommendations.
|
Conrad Radzoff(Ferdy Mayne), a hammy cult icon, dies from a heart ailment(not before disposing of an ungrateful assistant and TV commercial director, both of whom disrespected him with showers of insults). His body is removed from his mausoleum by some film students(they wish to "invite him to dinner"..they are quite big fans). What these kids(..including a young Jeffrey Combs)don't expect is that Radzoff will be resurrected by a medium to wreak havoc on those who removed him from his place of rest.<br /><br />The list of violent acts include Radzoff pulling one guy's tongue out, setting a woman on fire, elevating a casket which crushes a woman's face, decapitates one fellow, and cremates another guy alive in a coffin. A really weird soundtrack and pesky fog wraps around Radzoff's ghoulish activities.<br /><br />Silly hokum from Troma is limited by a very, very low budget and slowwwwww pace. The film feels a lot longer than it is. The film isn't really that gory and we can hardly see much violence because the film is often too damn dark. At times, Radzoff is an ominous presence, yet at other times he just looks real silly.
|
We investigate the building of models with Dirac gauginos and perturbative
gauge coupling unification. Here, in contrast to the MSSM, additional fields
are required for unification, and these can naturally play the role of the
messengers of supersymmetry breaking. We present a framework within which such
models can be constructed, including the constraints that the messenger sector
must satisfy; and the renormalisation group equations for the soft parameters,
which differ from those of the MSSM. For illustration, we provide the spectrum
at the electroweak scale for explicit models whose gauge couplings unify at the
scale predicted by heterotic strings.
|
Nice while it lasted - but 4 months later stopped working
Unfortunately - product stopped working after 4 months. Prior to this - the switch on time was too short, but brightness, install, handling was easy. Now need to try to figure out how to get the 12 month warranty honored.
|
We present a new method for detecting and identifying bacteria by measuring
impedance fluctuations (impedance noise) caused by ion release by the bacteria
during phage infestation. This new method significantly increases the measured
signal strength and reduces the negative effects of drift, material aging,
surface imperfections, 1/f potential fluctuations, thermal noise, and amplifier
noise.
Comparing BIPIF with another well-known method, bacteria detection by SEnsing
of Phage Triggered Ion Cascades (SEPTIC), we find that the BIPIF algorithm is
easier to implement, more stable and significantly more sensitive (by several
orders of magnitude). We project that by using the BIPIF method detection of a
single bacterium will be possible.
|
According to the standard cold dark matter (CDM) cosmology, the structure of
dark halos including those of galaxy clusters reflects their mass accretion
history. Older clusters tend to be more concentrated than younger clusters.
Their structure, represented by the characteristic radius $r_s$ and mass $M_s$
of the Navarro--Frenk--White (NFW) density profile, is related to their
formation time. In~this study, we showed that $r_s$, $M_s$, and the X-ray
temperature of the intracluster medium (ICM), $T_X$, form a thin plane in the
space of $(\log r_s, \log M_s, \log T_X)$. This tight correlation indicates
that the ICM temperature is also determined by the formation time of individual
clusters. Numerical simulations showed that clusters move along the fundamental
plane as they evolve. The plane and the cluster evolution within the plane
could be explained by a similarity solution of structure formation of the
universe. The angle of the plane shows that clusters have not achieved "virial
equilibrium" in the sense that mass/size growth and pressure at the boundaries
cannot be ignored. The distribution of clusters on the plane was related to the
intrinsic scatter in the halo concentration--mass relation, which originated
from the variety of cluster ages. The well-known mass--temperature relation of
clusters ($M_\Delta\propto T_X^{3/2}$) can be explained by the fundamental
plane and the mass dependence of the halo concentration without the assumption
of virial equilibrium. The fundamental plane could also be used for calibration
of cluster masses.
|
Excellent and happy with it!
Excellent! It works well and easy to maintain. It is made very well with the idea that hair, and small objects can clog the tubes. The design is made to easily unclog the tubes. With a house of cats, dogs and kids little toys this is an awesome design feature you really want when owning a vacuum cleaner.
|
In this paper we extend the results of Lenci and Rey-Bellet on the large
deviation upper bound of the distribution measures of local Hamiltonians with
respect to a Gibbs state, in the setting of translation-invariant finite-range
interactions. We show that a certain factorization property of the reference
state is sufficient for a large deviation upper bound to hold and that this
factorization property is satisfied by Gibbs states of the above kind as well
as finitely correlated states. As an application of the methods the Chernoff
bound for correlated states with factorization property is studied. In the
specific case of the distributions of the ergodic averages of a one-site
observable with respect to an ergodic finitely correlated state the spectral
theory of positive maps is applied to prove the full large deviation principle.
|
We study a multi-player one-round game termed Stackelberg Network Pricing
Game, in which a leader can set prices for a subset of $m$ priceable edges in a
graph. The other edges have a fixed cost. Based on the leader's decision one or
more followers optimize a polynomial-time solvable combinatorial minimization
problem and choose a minimum cost solution satisfying their requirements based
on the fixed costs and the leader's prices. The leader receives as revenue the
total amount of prices paid by the followers for priceable edges in their
solutions, and the problem is to find revenue maximizing prices. Our model
extends several known pricing problems, including single-minded and unit-demand
pricing, as well as Stackelberg pricing for certain follower problems like
shortest path or minimum spanning tree. Our first main result is a tight
analysis of a single-price algorithm for the single follower game, which
provides a $(1+\epsilon) \log m$-approximation for any $\epsilon >0$. This can
be extended to provide a $(1+\epsilon)(\log k + \log m)$-approximation for the
general problem and $k$ followers. The latter result is essentially best
possible, as the problem is shown to be hard to approximate within
$\mathcal{O(\log^\epsilon k + \log^\epsilon m)$. If followers have demands, the
single-price algorithm provides a $(1+\epsilon)m^2$-approximation, and the
problem is hard to approximate within $\mathcal{O(m^\epsilon)$ for some
$\epsilon >0$. Our second main result is a polynomial time algorithm for
revenue maximization in the special case of Stackelberg bipartite vertex cover,
which is based on non-trivial max-flow and LP-duality techniques. Our results
can be extended to provide constant-factor approximations for any constant
number of followers.
|
ok - not long lasting
I'm not sure why but these don't seem to last a long time. When they work, they are really nice but they do go bad. Ordered these for our office and my guess is that approximately 85% will last a few years but the others last less and need to be replaced.
|
Recent research discovered that charge transfer processes in chiral molecules
can be spin selective and named the effect chiral-induced spin selectivity
(CISS). Follow-up work studied hybrid spintronic devices with conventional
electronic materials and chiral (bio)molecules. However, a theoretical
foundation for the CISS effect is still in development and the spintronic
signals were not evaluated quantitatively. We present a circuit-model approach
that can provide quantitative evaluations. Our analysis assumes the scheme of a
recent experiment that used photosystem~I (PSI) as spin injectors, for which we
find that the experimentally observed signals are, under any reasonable
assumptions on relevant PSI time scales, too high to be fully due to the CISS
effect. We also show that the CISS effect can in principle be detected using
the same type of solid-state device, and by replacing silver with graphene, the
signals due to spin generation can be enlarged four orders of magnitude. Our
approach thus provides a generic framework for analyzing this type of
experiments and advancing the understanding of the CISS effect.
|
Finite difference schemes are the method of choice for solving nonlinear,
degenerate elliptic PDEs, because the Barles-Sougandis convergence framework
[Barles and Sougandidis, Asymptotic Analysis, 4(3):271-283, 1991] provides
sufficient conditions for convergence to the unique viscosity solution
[Crandall, Ishii and Lions, Bull. Amer. Math Soc., 27(1):1-67, 1992]. For
anisotropic operators, such as the Monge-Ampere equation, wide stencil schemes
are needed [Oberman, SIAM J. Numer. Anal., 44(2):879-895]. The accuracy of
these schemes depends on both the distances to neighbors, $R$, and the angular
resolution, $d\theta$. On uniform grids, the accuracy is $\mathcal O(R^2 +
d\theta)$. On point clouds, the most accurate schemes are of $\mathcal O(R +
d\theta)$, by Froese [Numerische Mathematik, 138(1):75-99, 2018]. In this work,
we construct geometrically motivated schemes of higher accuracy in both cases:
order $\mathcal O(R + d\theta^2)$ on point clouds, and $\mathcal O(R^2 +
d\theta^2)$ on uniform grids.
|
We explore the dynamical evolution of an ensemble of non-interacting
particles propagating freely in an elliptical billiard with harmonically driven
boundaries. The existence of Fermi acceleration is shown thereby refuting the
established assumption that smoothly driven billiards whose static counterparts
are integrable do not exhibit acceleration dynamics. The underlying mechanism
based on intermittent phases of laminar and stochastic behavior of the strongly
correlated angular momentum and velocity motion is identified and studied with
varying parameters. The diffusion process in velocity space is shown to be
anomalous and we find that the corresponding characteristic exponent depends
monotonically on the breathing amplitude of the billiard boundaries. Thus it is
possible to tune the acceleration law in a straightforwardly controllable
manner.
|
Tweet classification has attracted considerable attention recently. Most of
the existing work on tweet classification focuses on topic classification,
which classifies tweets into several predefined categories, and sentiment
classification, which classifies tweets into positive, negative and neutral.
Since tweets are different from conventional text in that they generally are of
limited length and contain informal, irregular or new words, so it is difficult
to determine user intention to publish a tweet and user attitude towards
certain topic. In this paper, we aim to simultaneously classify tweet purpose,
i.e., the intention for user to publish a tweet, and position, i.e.,
supporting, opposing or being neutral to a given topic. By transforming this
problem to a multi-label classification problem, a multi-label classification
method with post-processing is proposed. Experiments on real-world data sets
demonstrate the effectiveness of this method and the results outperform the
individual classification methods.
|
I think everyone was quite disappointed with this sci-fi flick. For one thing, it was directed by Tim Burton. Another thing, it's a remake of what is supposed to be a classic. I found it boring, gross, and ridiculous. If you've seen it, you know what I mean. Just about everyone at Imdb say it's crap and boy, are they right! If you haven't, avoid it. It's a snorer. 1 out of 10.
|
We present an accurate implementation of total energy calculations into the
local density approximation plus dynamical mean-field theory (LDA+DMFT) method.
The electronic structure problem is solved through the full potential linear
Muffin-Tin Orbital (FP-LMTO) and Korringa-Kohn-Rostoker (FP-KKR) methods with a
perturbative solver for the effective impurity suitable for moderately
correlated systems. We have tested the method in detail for the case of Ni and
investigated the sensitivity of the results to the computational scheme and to
the complete self-consistency. It is demonstrated that the LDA+DMFT method can
resolve a long-standing controversy between the LDA/GGA density functional
approach and experiment for equilibrium lattice constant and bulk modulus of
Mn.
|
The Liberals have no issue with paying $10.5 million tax free to someone (and their lawyers) who has fought for the enemy and has done things likely to have caused the death and injury of our own and allied soldiers while using Canada as a base. But they have a real issue with someone who distributes dividends (from a company he/she built) to family members all the while employing other Canadians in meaningful work. My god!!! What is the world coming to???? Canada just can not stand for these fair share hogging types. It is just not Canadian. That money belongs to the government so they can dole it out to their friends not the idiot who made it.
|
In this note, we state a theorem of compution of the unipotent radical of the
Galois group of an object $U$ of a tannakian category defined over a field of
positive characteristic, extension of the unit object by a semi-simple one. We
then give a criteria of algebricity of solutions of the objects in terms of
linear dependences in groups of extension. We apply these results to the
tanakian framework of $t$-motives developped by M. Papanikolas; in particular,
we give an alternative proof of the algebraic independence of Carlitz
logarithms.
|
I guess it all comes down to what you want for the country. Obvviously you do not believe in the sanctity of human life? Life is a priviledge, nothing more? Well then you better make health care a basic right. It was just repointed that we are lbehind life expectancy when compared to S. Korea. Be proud republicans, this is the obvious result of having a health care system second to just about any other system in the industrialized world and is only interested in making big bucks as opposed to making people healthly..
|
Glasses at low temperature fluctuate around their inherent states; glassy
anomalies reflect the structure of these states. Recently there have been
numerous observations of long-range stress correlations in glassy materials,
from supercooled liquids to colloids and granular materials, but without a
common explanation. Herein it is shown, using a field theory of inherent
states, that long-range stress correlations follow from mechanical equilibrium
alone, with explicit predictions for stress correlations in 2 and 3 dimensions.
`Equations of state' relating fluctuations to imposed stresses are derived, as
well as field equations that fix the spatial structure of stresses in arbitrary
geometries. Finally, a new holographic quantity in 3D amorphous systems is
identified.
|
The identification and modeling of the terrain from point cloud data is an
important component of Terrestrial Remote Sensing (TRS) applications. The main
focus in terrain modeling is capturing details of complex geological features
of landforms. Traditional terrain modeling approaches rely on the user to exert
control over terrain features. However, relying on the user input to manually
develop the digital terrain becomes intractable when considering the amount of
data generated by new remote sensing systems capable of producing massive
aerial and ground-based point clouds from scanned environments. This article
provides a novel terrain modeling technique capable of automatically generating
accurate and physically realistic Digital Terrain Models (DTM) from a variety
of point cloud data. The proposed method runs efficiently on large-scale point
cloud data with real-time performance over large segments of terrestrial
landforms. Moreover, generated digital models are designed to effectively
render within a Virtual Reality (VR) environment in real time. The paper
concludes with an in-depth discussion of possible research directions and
outstanding technical and scientific challenges to improve the proposed
approach.
|
Uplink synchronization in orthogonal frequency-division multiple-access
(OFDMA) systems is a challenging task. In IEEE 802.16-based networks, users
that intend to establish a communication link with the base station must go
through a synchronization procedure called Initial Ranging (IR). Existing IR
schemes aim at estimating the timing offsets and power levels of ranging
subscriber stations (RSSs) without considering possible frequency misalignments
between the received uplink signals and the base station local reference. In
this work, we present a novel IR scheme for OFDMA systems where carrier
frequency offsets, timing errors and power levels are estimated for all RSSs in
a decoupled fashion. The proposed frequency estimator is based on a subspace
decomposition approach, while timing recovery is accomplished by measuring the
phase shift between the users'channel responses over adjacent subcarriers.
Computer simulations are employed to assess the effectiveness of the proposed
solution and to make comparisons with existing alternatives.
|
Loved them so much the first time...what happened?!
The first time I ordered these I loved them! Finally a wipe that doesn’t break, has no scent, and the package lasts long. Ordered them a second time and it’s almost like the wipes were switched. They smelled like cleaning wipes and gave my husband and I a rash. Don’t know what happened but I was so excited to finally find these. I won’t purchase again because well, I don’t wanna pay this much to get a rash and smell like a Clorox wipe.
|
We investigate the Jordan-H\"older property (JHP) in exact categories. First,
we show that (JHP) holds in an exact category if and only if the Grothendieck
monoid introduced by Berenstein and Greenstein is free. Moreover, we give a
criterion for this which only uses the Grothendieck group and the number of
simple objects. Next, we apply these results to the representation theory of
artin algebras. For a large class of exact categories including functorially
finite torsion(-free) classes, (JHP) holds precisely when the number of
indecomposable projectives is equal to that of simples. We study torsion-free
classes in a quiver of type A in detail using the combinatorics of symmetric
groups. We introduce Bruhat inversions of permutations and show that simples in
a torsion-free class are in bijection with Bruhat inversions of the
corresponding $c$-sortable element. We use this to give a combinatorial
criterion for (JHP).
|
i think it also probably also more is more as you get into the the big schools the ones that the TVs are going to cover and things anyhow when you still have the the lower sides or the smaller schools they're all doing it just for the for the love of the game because they're not getting the big revenues from anyone
|
Impossible Directions. Prepare to be frustrated.
I read most of the other reviews so I knew what to expect. The quality was fine, nothing amazing but by no means poor. Where this piece really fell apart was the instructions. I should start off by saying I have an architecture degree and practice as an architect so I’m familiar with putting things together. These instructions were some of the worst directions I have ever seen. In addition to no pieces being labeled, they leave out a lot of the details which resulted in having to assemble and disassemble several pieces. It ended up taking me more than two hours and I only made progress when I finally just stopped looking at the directions. On top of that, I ended up having to drill out some of the holes which were not drilled out very well and it was missing two bolts. Time will tell about the quality, but if the instructions are any indicator about the craft of the fabricator, I’m not too hopeful.
|
I took it it out and connected it to a cell phone, an ipod, an Ipad, an Iphone, my computer to charge, ran it on solar power, connected a battery pack to it (the connector fit), there really doesn't seem to be a limit to it other than your own ingenuity.
|
This paper proposes a novel generic one-class feature learning method based
on intra-class splitting. In one-class classification, feature learning is
challenging, because only samples of one class are available during training.
Hence, state-of-the-art methods require reference multi-class datasets to
pretrain feature extractors. In contrast, the proposed method realizes feature
learning by splitting the given normal class into typical and atypical normal
samples. By introducing closeness loss and dispersion loss, an intra-class
joint training procedure between the two subsets after splitting enables the
extraction of valuable features for one-class classification. Various
experiments on three well-known image classification datasets demonstrate the
effectiveness of our method which outperformed other baseline models in
average.
|
This 1939 film from director John Ford and writer Lamar Trotti tells a fictional tale of young lawyer Abraham Lincoln, his trials (literally) and his tribulations. It's a sentimental film, reasonably well made but hardly breathtaking. The casting of Henry Fonda as Lincoln seems a mistake, for while the actor had the right doleful qualities for the part, even with several inches of makeup and a false nose he's way too handsome for Honest Abe, who was famously homely. It's a good try from Fonda, who's nothing if not sincere, but his miscasting throws the entire film off. The supporting cast is excellent, though, and includes Alice Brady, Ward Bond and Donald Meek. But Ford is too reverential in his treatment of Lincoln, who is presented as just shy of a saint, and in the final scene the movie goes way over the top.
|
The class of the hypercomplex pseudo-Hermitian manifolds is considered. The
flatness of the considered manifolds with the 3 parallel complex structures is
proved. Conformal transformations of the metrics are introduced. The conformal
invariance and the conformal equivalence of the basic types manifolds are
studied. A known example is characterized in relation to the obtained results.
|
We use Hodge theory and functional analysis to develop a clean approach to
heat flows and Onsager's conjecture on Riemannian manifolds with boundary,
where the weak solution lies in the trace-critical Besov space
$B_{3,1}^{\frac{1}{3}}$. We also introduce heatable currents as the natural
analogue to tempered distributions and justify their importance in Hodge
theory.
|
The B Factories have generated a large amount of new results on the tau
lepton. The present status of some selected topics on tau physics is presented:
charged-current universality tests, bounds on lepton-flavour violation, the
determination of alpha_s from the inclusive tau hadronic width, and the
measurement of |V_{us}| through the Cabibbo-suppressed decays of the tau
lepton.
|
Betty is as an understudy in a production of Verdi's Macbeth who is asked to go on when the diva is hurt in a car accident. However, in the grand tradition of "The Scottish Play", the production seems cursed with problems, not least of which is some madman slicing up the crew. Unfortunately for Betty, the killer seems to have special plans for her ...<br /><br />This is one of several must-see Argento mad-slasher flicks, in this instance primarily for the extraordinary photography by the great British cameraman Ronnie Taylor. I haven't measured it, but I reckon around two-thirds of the shots in this film involve either pans, dollies, tracking or cranes - the sheer amount of camera movement is just astonishing and makes the movie ten times more exciting than a standard thriller. The imagery is wild and dizzying - closeups of the heroine's eyes forced open with nails, a swooping glide around an opera house from a raven's point of view, shots of the killer's brain squirming, a bullet fired through a peephole, a swallowed chain dug out of a victim's trachea. Conceptually it's just amazing and could only be realised by this director. The movie isn't without some shortcomings though; the cast are variable at best - Marsillach and Barberini are both a bit shaky (and his dubbing in the English version is appalling, even by Italian standards), although Argento regular Nicolodi is fun and Charleson gives a thoughtful performance in a role that is more than a little autobiographical (a horror director much maligned for his remoteness and reliance on technique). The material is a nice three-way mix of The Phantom Of The Opera, Shakespeare and slasher flick, scripted by Argento and his usual collaborator, Franco Ferrini, with shifty suspects galore and the usual disdain for boring expository scenes to explain what's actually going on. Full of all sorts of different music - Brian Eno, Claudio Simonetti, Bill Wyman, Puccini, and of course, Verdi. The scenes in the beautiful opera-house were shot at the Teatro Regio in Parma. For some bizarre reason the UK print of this movie has the alternative title Terror At The Opera.
|
Earth is constantly being bombarded with material from space. Most of the
natural material end up being dust grains that litter the surface of Earth, but
larger bodies are known to impact every few decades. The most recent large
impact was Chelyabinsk which set off a 500-kiloton explosion which was 40 times
that of the Hiroshima nuclear explosion. Apart from meteors, there is a growing
threat of space assets deorbiting. With these impending space threats, it is
critical to have a constellation of satellites to autonomously lookout for
meteors and reentering space debris. By using multiple spacecraft, it is
possible to perform multipoint observation of the event. Through multipoint
observation, it is possible to triangulate the location of the observed event.
The detection, tracking, and analysis of these objects all need to be performed
autonomously. Our previous work focused on developing several vision algorithms
including blob-detection, feature detection, and neural network-based image
segment classification. For this multipoint observation to occur, it requires
multiple spacecraft to coordinate their actions particularly fixating on the
space observation target. Furthermore, communication and coordination are
needed for bringing new satellites into observation view and removing other
satellites that have lost their view. In this paper, we analyze
state-of-the-art observation technology for small satellites and perform
detailed design of its implementation. Through this study, we estimate the
error estimates on position, velocity, and acceleration. We presume use of low
to mid-tier cameras for the spacecraft.
|
We report results from joint NuSTAR, Swift and XMM-Newton observations of the
newly discovered black hole X-ray binary candidate Swift J1658.2-4242 in the
intermediate state. We observe a peculiar event in this source, with its X-ray
flux rapidly decreasing by $\sim$45\% in $\sim$40~s, accompanied by only subtle
changes in the shape of the broadband X-ray spectrum. In addition, we find a
sudden turn-on of a transient QPO with a frequency of $6-7$~Hz around the time
of the flux change, and the total fractional rms amplitude of the power
spectrum increases from $\sim$2\% to $\sim$10\%. X-ray spectral and timing
analyses indicate that the flux decrease is driven by intrinsic changes in the
accretion flow around the black hole, rather than intervening material along
the line of sight. In addition, we do not significantly detect any relativistic
disk reflection component, indicating it is much weaker than previously
observed while the source was in the bright hard state. We propose accretion
disk instabilities triggered at a large disk radius as the origin of the fast
transition in spectral and timing properties, and discuss possible causes of
the unusual properties observed in Swift J1658.2-4242. The prompt flux
variation detected along with the emergence of a QPO makes the event an
interesting case for investigating QPO mechanisms in black hole X-ray binaries.
|
Personal assistant AI systems such as Siri, Cortana, and Alexa have become
widely used as a means to accomplish tasks through natural language commands.
However, components in these systems generally rely on supervised machine
learning algorithms that require large amounts of hand-annotated training data,
which is expensive and time consuming to collect. The ability to incorporate
unsupervised, weakly supervised, or distantly supervised data holds significant
promise in overcoming this bottleneck. In this paper, we describe a framework
that leverages user engagement signals (user behaviors that demonstrate a
positive or negative response to content) to automatically create granular
entity labels for training data augmentation. Strategies such as multi-task
learning and validation using an external knowledge base are employed to
incorporate the engagement annotated data and to boost the model's accuracy on
a sequence labeling task. Our results show that learning from data
automatically labeled by user engagement signals achieves significant accuracy
gains in a production deep learning system, when measured on both the sequence
labeling task as well as on user facing results produced by the system
end-to-end. We believe this is the first use of user engagement signals to help
generate training data for a sequence labeling task on a large scale, and can
be applied in practical settings to speed up new feature deployment when little
human annotated data is available.
|
The additive model is one of the most popular semiparametric models. The
backfitting estimation (Buja, Hastie and Tibshirani, 1989, \textit{Ann.
Statist.}) for the model is intuitively easy to understand and theoretically
most efficient (Opsomer and Ruppert, 1997, \textit{Ann. Statist.}); its
implementation is equivalent to solving simple linear equations. However,
convergence of the algorithm is very difficult to investigate and is still
unsolved. For bivariate additive models, Opsomer and Ruppert (1997,
\textit{Ann. Statist.}) proved the convergence under a very strong condition
and conjectured that a much weaker condition is sufficient. In this short note,
we show that a weak condition can guarantee the convergence of the backfitting
estimation algorithm when the Nadaraya-Watson kernel smoothing is used.
|
We investigate the combinatorial and geometric properties of automorphism
groups of universal right-angled Coxeter groups, which are the automorphism
groups of free products of copies of Z_2. It is currently an open question as
to whether or not these automorphism groups have non-positive curvature.
Analogous to Outer Space as a model for Out(F_n), we prove that the natural
combinatorial and topological model for their outer automorphism groups can
\emph{not} be given an equivariant CAT(0) metric. This is particularly
interesting as there are very few non-trivial examples of proving that a model
space of independent interest is not CAT(0).
|
PurposeTo compare different multi-echo combination methods for MRI quantitative susceptibility mapping (QSM). Given the current lack of consensus, we aimed to elucidate how to optimally combine multi-echo gradient-recalled echo (GRE) signal phase information, either before or after applying Laplacian-base methods (LBMs) for phase unwrapping or background field removal.
MethodsMulti-echo GRE data were simulated in a numerical head phantom, and multiecho GRE images were acquired at 3 T in ten healthy volunteers. To enable image-based estimation of GRE signal noise, five volunteers were scanned twice in the same session without repositioning. Five QSM processing pipelines were designed: one applied nonlinear phase fitting over echo times (TEs) before LBMs; two applied LBMs to the TE-dependent phase and then combined multiple TEs via either TE-weighted or signal-to-noise ratio (SNR)-weighted averaging; two calculated TE-dependent susceptibility maps via either multi-step or single-step QSM and then combined multiple TEs via magnitude-weighted averaging. Results from different pipelines were compared using visual inspection; summary statistics of susceptibility in deep gray matter, white matter, and venous regions; phase noise maps (error propagation theory); and, in the healthy volunteers, regional fixed bias analysis (Bland-Altman) and regional differences between the means (nonparametric tests).
ResultsNonlinearly fitting the multi-echo phase over TEs before applying LBMs provided the highest regional accuracy of{chi} and the lowest phase noise propagation compared to averaging the LBM-processed TE-dependent phase. This result was especially pertinent in high-susceptibility venous regions.
ConclusionFor multi-echo QSM, we recommend combining the signal phase by nonlinear fitting before applying LBMs.
|
A double Tavis-Cummings model (DTCM) is developed to simulate the
entanglement dynamics of realistic quantum information processing where two
entangled atom-pairs $AB$ and $CD$ are distributed in such a way that atoms
$AC$ are embedded in a cavity $a$ while $BD$ are located in another remote
cavity $b$. The evolutions of different types of initially shared entanglement
of atoms are studied under various initial states of cavity fields. The results
obtained in the DTCM are compared with that obtained in the double
Jaynes-Cummings model (DJCM) [J. Phys. B \textbf{40}, S45 (2007)] and an
interaction strength theory is proposed to explain the parameter domain in
which the so-called entanglement sudden death occurs for both the DTCM and
DJCM.
|
UFC 55: Fury was a mixed martial arts event held by the Ultimate Fighting Championship on October 7, 2005 at the Mohegan Sun Arena in Uncasville, Connecticut, this would be the last UFC to air live on a Friday until which mixed martial arts pay-per-view event held by the Ultimate Fighting Championship on Friday December 30, 2011, at the MGM Grand Garden Arena in Las Vegas, Nevada?
|
If people didn't want, or have to know why they (or someone else..say a criminal) act the way they do, there wouldn't BE any shrinks. They serve a legitimate purpose, and many of our laws are based on criminalizing aberrant behavior that is unacceptable in society. Do the mores of society change? Sure, and obvious aberrant behavior sometimes is "legitimized", if not as "normal", then "acceptable" to a society on a downward spiral. What is "normal" is based on many factors, biology, culture, religion, etc. among them. Usually, it's just a matter of common sense.
But, I think I'll go with a "court accepted" expert with decades of experience in dealing with those who aren't. If someone else comes up with a more plausible reason for people who seek to destroy our Constitution, Rights, rule of law, family, etc. I'll entertain their view as well!
|
Inflation driven by a single dark spinor field is discussed. We define the
notion of a dark spinor field and derive the cosmological field equations for
such a matter source. The conditions for inflation are determined and an
exactly solvable model is presented. We find the power spectrum of the quantum
fluctuation of this field and compare the results with scalar field inflation.
|
good product
Messed up my order and had it sent to an old address, sent message to company and the resent it to the correct one. The case itself is nice. My phone fits in well. The edge around the phone is just plastic. I wish it was a fabric type material like I have an my tablet case, but that's just personal preference.
|
The boundary element method is applied to investigate the optical forces when
whispering gallery modes (WGMs) are excited by a total internally reflected
wave. Such evanescent wave is particularly effective in exciting the high-$Q$
WGM, while the low angular or high radial order modes are suppressed
relatively. This results in a large contrast between the forces on and off
resonance, and thus allows for high size-selectivity. We fully incorporate the
prism-particle interaction and found that the optical force behaves differently
at different separations. Optimal separation is found which corresponds to a
compromise between intensity and $Q$ factor.
|
An accurate modeling of a Josephson junction that is embedded in an arbitrary
environment is of crucial importance for qubit design. We present a formalism
to obtain a Lindblad master equation that describes the evolution of the
system. As the qubit degrees of freedom oscillate with a well-defined frequency
$\omega_q$, the environment only has to be modeled close to this frequency.
Different from alternative approaches, we show that this goal can be achieved
by modeling the environment with only few degrees of freedom. We treat the
example of a transmon qubit coupled to a stripline resonator. We derive the
parameters of a dissipative single-mode Jaynes-Cummings model starting from
first principles. We show that the leading contribution of the off-resonant
modes is a correlated decay process involving both the qubit and the resonator
mode. In particular, our results show that the effect of the off-resonant modes
in the multi-mode Jaynes-Cummings model is perturbative in $1/ \omega_q$.
|
Due to the great growth of motorcycles in the urban fleet and the growth of
the study on its behavior and of how this vehicle affects the flow of traffic
becomes necessary the development of tools and techniques different from the
conventional ones to identify its presence in the traffic flow and be able to
extract your information. The article in question attempts to contribute to the
study on this type of vehicle by generating a motorcycle image bank and
developing and calibrating a motorcycle classifier by combining the LBP
techniques to create the characteristic vectors and the classification
technique LinearSVC to perform the predictions. In this way the classifier of
vehicles of the type motorcycle developed in this research can classify the
images of vehicles extracted of videos of monitoring between two classes
motorcycles and non-motorcycles with a precision and an accuracy superior to
0,9.
|
We determine the caloric curves of classical self-gravitating systems at
statistical equilibrium in general relativity. In the classical limit, the
caloric curves of a self-gravitating gas depend on a unique parameter
$\nu=GNm/Rc^2$, called the compactness parameter, where $N$ is the particle
number and $R$ the system's size. Typically, the caloric curves have the form
of a double spiral. The "cold spiral", corresponding to weakly relativistic
configurations, is a generalization of the caloric curve of nonrelativistic
classical self-gravitating systems. The "hot spiral'", corresponding to
strongly relativistic configurations, is similar (but not identical) to the
caloric curve of the ultrarelativistic self-gravitating black-body radiation.
We introduce two types of normalization of energy and temperature in order to
obtain asymptotic caloric curves describing respectively the cold and the hot
spirals in the limit $\nu\rightarrow 0$. As the number of particles increases,
the cold and the hot spirals approach each other, merge at $\nu'_S=0.128$, form
a loop above $\nu_S=0.1415$, reduce to a point at $\nu_{\rm max}=0.1764$, and
finally disappear. Therefore, the double spiral shrinks when the compactness
parameter $\nu$ increases, implying that general relativistic effects render
the system more unstable. We discuss the nature of the gravitational collapse
at low and high energies with respect to a dynamical (fast) or a
thermodynamical (slow) instability.
|
right and um um i did get the water pump was shot at the same time so i got the water pump fixed just to carry me over until i could sell the car um which i which surprisingly the car was in great demand um in fact i had a bunch of people come to look at it and they were fighting over how much they were going to pay me for this piece of junk i was amazed
|
De Graaf et al. (2019) suggest that groundwater pumping will bring 42--79\%
of worldwide watersheds close to environmental exhaustion by 2050. We are
skeptical of these figures due to several non-unique assumptions behind the
calculation of irrigation water demands and the perfunctory exploration of the
model's uncertainty space. Their sensitivity analysis reveals a widespread lack
of elementary concepts of design of experiments among modellers, and can not be
taken as a proof that their conclusions are robust.
|
By reinterpreting the familiar tools and ideas of M-theory model building, we
show how a G2-manifold locally engineered to give rise to massless matter
representations of an SU(5) grand unified model can be smoothly unfolded into a
G2-manifold giving rise to SU(3)xSU(2) gauge theory with the corresponding
matter representations. These ideas could lead to new insights in string
phenomenology because much of the arbitrariness of M-theory model building can
be removed by supposing, for example, that the singularities giving rise to
Standard Model particles could arise from unfolding a more singular, grand
unified geometry.
|
We consider the band assignment problem in dual band systems, where the
base-station (BS) chooses one of the two available frequency bands
(centimeter-wave and millimeter-wave bands) to communicate data to the mobile
station (MS). While the millimeter-wave band offers higher data rate when it is
available, there is a significant probability of outage during which the
communication should be carried on the centimeter-wave band.
In this work, we use a machine learning framework to provide an efficient and
practical solution to the band assignment problem. In particular, the BS trains
a Neural Network (NN) to predict the right band assignment decision using
observed channel information. We study the performance of the NN in two
environments: (i) A stochastic channel model with correlated bands, and (ii)
microcellular outdoor channels obtained by simulations with a commercial
ray-tracer. For the former case, for sake of comparison we also develop a
threshold based band assignment that relies on the optimal mean square error
estimator of the best band. In addition, we study the performance of the
NN-based solution with different NN structures and different observed
parameters (position, field strength, etc.). We compare the achieved
performance to linear and logistic regression based solutions as well as the
threshold based solution. Under practical constraints, the learning based band
assignment shows competitive or superior performance in both environments.
|
Recently the BaBar Collaboration published new data on the cross section for
the annihilation e+e- -> phi pi0, obtained using the initial state radiation
technique at a center of mass energy of 10.6 GeV. Such a process represents an
interesting test bed for the quark model. Indeed, since the phi-pi0 production
via e+e- annihilation proceeds through a mechanism which violates the
Okubo-Zweig-Iizuka rule, the corresponding cross section could be characterized
by contributions from non-qqbar bound states, like hybrids or tetraquarks. The
phi-pi0 cross section is analyzed in connection with other data coming from
different processes, that involve the same mesons, using a method which
implements the analyticity in the phi-pi0 transition form factor by means of a
dispersion relation procedure.
|
Very nice
Very nice quality earrings. I took away 1 star because they arent as small as i hoped they would be. I have multiple piercings on my ears and need small/tiny earrings so they will fit. The smallest "diamond" and the small ball are the smallest and only ones that i can use in my cartilage piercing. Other than the size i cannot complain. Good quality product that arrived in a timely manner.
|
We present a comprehensive study on metal-organic vapor phase epitaxy growth
of N-polar and Al-polar AlN on 4H-SiC with 4 deg miscut using constant growth
parameters. At a high temperature of 1165 degC, N-polar AlN layers had high
crystalline quality whereas the Al-polar AlN surfaces had a high density of
etch pits. For N-polar AlN, the V/III ratio below 1000 forms hexagonal
hillocks, while the V/III ratio over 1000 yields step bunching without the
hillocks. 1-um-thick N-polar AlN layer grown in optimal conditions exhibited
FWHMs of 307, 330 and 337 arcsec for (002), (102) and (201) reflections,
respectively.
|
We provide a straightforward and numerically efficient procedure to perform
local density approximation + Hubbard I (LDA+HIA) calculations, including
self-consistency over the charge density, within the full potential linearized
augmented plane wave (FP-LAPW) method. This implementation is all-electron,
includes spin-orbit interaction, and makes no shape approximations for the
charge density. The method is applied to calculate selected heavy actinides in
the paramagnetic phase. The electronic structure and spectral properties of Am
and Cm metals obtained are in agreement with previous dynamical mean-field
theory (LDA+DMFT) calculations and with available experimental data. We point
out that the charge density self-consistent LDA+HIA calculations predict the
$f$ charge on Bk to exceed the atomic integer $f^8$ value by 0.22.
|
We consider a chain of particles connected by an-harmonic springs, with a
boundary force (tension) acting on the last particle, while the first particle
is kept pinned at a point. The particles are in contact with stochastic heat
baths, whose action on the dynamics conserves the volume and the momentum,
while energy is exchanged with the heat baths in such way that, in equilibrium,
the system is at a given temperature $T$. We study the space empirical profiles
of volume stretch and momentum under hyperbolic rescaling of space and time as
the size of the system growth to be infinite, with the boundary tension
changing slowly in the macroscopic time scale. We prove that the probability
distributions of these profiles concentrate on $L^2$-valued weak solutions of
the isothermal Euler equations (i.e. the non-linear wave equation, also called
p-system), satisfying the boundary conditions imposed by the microscopic
dynamics. Furthermore, the weak solutions obtained satisfy the Clausius
inequality between the work done by the boundary force and the change of the
total free energy in the system. This result includes the shock regime of the
system.
|
This paper attempts to throw some light on what is the correct choice of
sources for Einstein's field equations for the gravitational metric, and on the
definition of the Cauchy-Noether energy-momentum tensor of relativistic field
theories, the natural source of Einstein's equation. The paper opens with a
brief review of the development of an idea first advanced by Maupertui (1741):
the Dynamical Action Principle. The story reached a turning point with the
creation of Einstein's theory of General Relativity. The associated work of
Noether served as an inspiration for particle physics for 100 years. The
discovery of gravity waves (LIGO 2016) showed that Gravity is a phenomenon akin
to, and part of, particle physics, to be treated as a canonical field theory,
and eventually quantized. Here the subject is the theory of the classical
metric field in interaction with extended distributions of matter.We determine
a class of Noetherian field theories that provide extended sources for
Einstein's equations and action integrals for classical hydrodynamics. The
intimate relationship between hydrodynamics and General Relativity is
emphasized. Results: The 2-form gauge theory of Ogievetskij and Polubarinov
(1964) makes a crucial contribution to the matter source of gravity. Multiple,
unexpected roles are played by `permittivities'. There is a unique,
relativistic hydrodynamics with 4 degrees of freedom that includes vorticity,
the equation of continuity and a generalization of the Bernoulli equation. It
is based on an action principle and it reduces, in the non relativistic limit,
to a simple generalization of Lagrange theory of 1760, with just one free
parameter..
|
Let's begin with that theme song sung by Christopher Cross. The song is "If you get caught between the moon and New York City." It's a great theme and song even after all these years, it never gets tiring. It really is a great song about New York City as well. Anyway, the great Dudley Moore CBE stars as a spoiled drunken millionaire who is engaged to Jill Eikenberry's character in the film. Jill would later star on LA Law. Anyway, he is served by his wonderful British butler, Sir John Gielgud OM who won an Academy Award for his performance in the film as Best Supporting Actor. Arthur falls in love with Liza Minnelli's character who is perfect in this film besides her performance in her Oscar winning role in Cabaret. No, Liza doesn't get to sing. She plays a diner waitress. Anyway I love Geraldine Fitzgerald as the Bach matriarch of the family who decides the family's fortune. Anyway, she is fabulous and should have gotten an academy award nomination herself for Best Supporting Actress. Barney Martin best known as Jerry's dad on Seinfeld plays Liza's dad. He's great too. The movie was well-written, acted, and delivered to the audience who wanted more of it.
|
For $\varepsilon>0$, let $u_\varepsilon:\Omega\to \mathbb R^2$ be a solution
of the Ginzburg-Landau system $$-\Delta u_\varepsilon=\frac 1{\varepsilon^2}
u_\varepsilon (1-|u_\varepsilon|^2)$$ in a Lipschitz bounded domain $\Omega$.
In an energy regime that excludes interior vortices, we prove that
$1-|u_\varepsilon|$ is uniformly estimated by a positive power of $\varepsilon$
$globally$ in $\Omega$ provided that the energy of $u_\varepsilon$ at the
boundary $\partial \Omega$ does not grow faster than $\varepsilon^{-\alpha}$
with $\alpha\in (0,1)$.
|
It's not a "need", I don't think, to feel that we are in possession of the Great Light, but the reality that God came into time in the Person of Jesus. While there are other faith traditions that may possess elements of truth, its fullness resides in that Church founded by Jesus. One may certainly choose not to believe that, but many of the faith traditions to which you point engender far more incredulity than a monotheistic faith with a personal God. Yes, there is no certainty in some instances, like the fate of the individual unbaptized, for example. But that which is key to our salvation, like our relationship with God the Father or the resurrection of Jesus are just a few of those certainties to which Christians can point as touchstones to their faith. Far from patronizing, it is recognizing that all are called to this relationship and God has granted a way for them (and us) to answer that call.
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.