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The bound states that can occur in a superfluid vortex have recently called
for attention owing to the capability of detecting them experimentally.
However, a detailed theoretical account for the presence of these vortex bound
states is still lacking, for all temperatures in the superfluid phase and
couplings along the BCS-BEC crossover. Here, we fill this gap and present a
systematic theoretical study based on the Bogoliubov-de~Gennes equations for
the bound states that occur over the two characteristic (inner and outer)
spatial ranges in which the extension of a superfluid vortex can be
partitioned. It is found that the total number of bound states decreases from
the BCS (weak-coupling) side of the crossover toward the intermediate-coupling
region where they are still present, whereas the bound states disappear upon
entering the BEC (strong-coupling) side. A scaling relation is also obtained
that connects the number of bound states in the inner spatial range of the
vortex to the depth and width of the vortex itself. A criterion is finally
provided in terms of the local density of states, to distinguish where a given
fermionic superfluid is located in the coupling-temperature phase diagram of
the BCS-BEC crossover.
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Debris disks or belts are important signposts for the presence of colliding
planetesimals and, therefore, for ongoing planet formation and evolution
processes in young planetary systems. Imaging of debris material at small
separations from the star is very challenging but provides valuable insights
into the spatial distribution of so-called hot dust produced by solid bodies
located in or near the habitable zone. We report the first detection of
scattered light from the hot dust around the nearby (d = 28.33 pc) A star HD
172555. We want to constrain the geometric structure of the detected debris
disk using polarimetric differential Imaging (PDI) with a spatial resolution of
25 mas and an inner working angle of about 0.1$''$. We measured the polarized
light of HD 172555, with SPHERE-ZIMPOL, in the very broad band (VBB;
$\lambda=735$ nm) filter for the projected separations between 0.08$''$ (2.3
au) and 0.77$''$ (22 au). We constrained the disk parameters by fitting models
for scattering of an optically thin dust disk taking the limited spatial
resolution and coronagraphic attenuation of our data into account. The
geometric structure of the disk in polarized light shows roughly the same
orientation and outer extent as obtained from thermal emission at 18 $\mu$m.
Our image indicates the presence of a strongly inclined ($i\sim 103.5^\circ$),
roughly axisymmetric dust belt with an outer radius in the range between
0.3$''$ (8.5 au) and 0.4$''$ (11.3 au). We derive a lower limit for the
polarized flux contrast ratio for the disk of $(F_{\rm pol})_{\rm disk}/F_{\rm
\ast}> (6.2 \pm 0.6)\cdot 10^{-5}$ in the VBB filter. This ratio is small, only
9 %, when compared to the fractional infrared flux excess ($\approx 7.2\cdot
10^{-4}$). The model simulations show that more polarized light could be
produced by the dust located inside 2 au, which cannot be detected with the
instrument configuration used.
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We have obtained the exact ground state wave functions of the
Anderson-Hubbard model for different electron fillings on a 4x4 lattice with
periodic boundary conditions - for 1/2 filling such ground states have roughly
166 million states. When compared to the uncorrelated ground states (Hubbard
interaction set to zero) we have found strong evidence of the very effective
screening of the charge homogeneities due to the Hubbard interaction. We have
successfully modelled these local charge densities using a non-interacting
model with a static screening of the impurity potentials. In addition, we have
compared such wave functions to self-consistent real-space unrestricted
Hartree-Fock solutions and have found that these approximate ground state wave
functions are remarkably successful at reproducing the local charge densities,
and may indicate the role of dipolar backflow in producing a novel metallic
state in two dimensions.
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Actually, the movie is neither horror nor Sci-Fi. With a very strong Christian religious theme, this movie delivers minimal content and no suspense. Second-tier actors do half-decent jobs of reading their boring roles. The only good performance is by Sydney Penny who plays a role of a mother of ... I won't spoil the movie, it's either Christ or Anti-Christ. Avoid watching this movie unless you a Christian religious fanatic obsessed with apocalypse.<br /><br />Being a non-Christian, I had to force myself to watch this movie just because I wanted to write this review. It's a pity that Sci-Fi channel had to air this movie at the peak evening time.
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A differential graded algebra can be viewed as an A-infinity algebra. By a
theorem of Kadeishvili, a dga over a field admits a quasi-isomorphism from a
minimal A-infinity algebra. We introduce the notion of a derived A-infinity
algebra and show that any dga A over an arbitrary commutative ground ring k is
equivalent to a minimal derived A-infinity algebra. Such a minimal derived
A-infinity algebra model for A is a k-projective resolution of the homology
algebra of A together with a family of maps satisfying appropriate relations.
As in the case of A-infinity algebras, it is possible to recover the dga up
to quasi-isomorphism from a minimal derived A-infinity algebra model. Hence the
structure we are describing provides a complete description of the
quasi-isomorphism type of the dga.
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We argue that relatively compact charmonium states, $J/\psi$, $\psi(2S)$,
$\chi_c$, can very likely be bound inside light hadronic matter, in particular
inside higher resonances made from light quarks and/or gluons. The charmonium
state in such binding essentially retains its properties, so that the bound
system decays into light mesons and the particular charmonium resonance. Thus
such bound states of a new type, which we call hadro-charmonium, may explain
the properties of some of the recently observed resonant peaks, in particular
of Y(4.26), Y(4.32-4.36), Y(4.66), and Z(4.43). We discuss further possible
implications of the suggested picture for the observed states and existence of
other states of hadro-charmonium and hadro-bottomonium.
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Puzzled or surprised by the almost incredible accuracy occasionally claimed
in the literature to be achievable for numerical outcomes of QCD sum-rule
analyses, we scrutinized the usual procedure employed for the extraction of the
parameters of individual bound states from dispersive sum rules by taking
advantage of the exact solvability of a quantum-mechanical harmonic-oscillator
model: It turns out that the determination of the ground-state parameters (that
is, decay constant and form factor) by requiring independence from the Borel
mass in its stability window does not necessarily yield their exact numerical
values. For instance, the comparison of the sum-rule predictions for
bound-state parameters with their numerical values known precisely in our
harmonic-oscillator model reveals that standard sum-rule procedures
underestimate the ground-state decay constant by some 4% and its form factor by
almost 15%; such systematic uncertainties cannot be inferred from our
correlators' accuracy better than 1% in the window of Borel stability: they are
uncontrollable.
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A new method is proposed for integrating the equations of motion of an
elastic filament. In the standard finite-difference and finite-element
formulations the continuum equations of motion are discretized in space and
time, but it is then difficult to ensure that the Hamiltonian structure of the
exact equations is preserved. Here we discretize the Hamiltonian itself,
expressed as a line integral over the contour of the filament. This discrete
representation of the continuum filament can then be integrated by one of the
explicit symplectic integrators frequently used in molecular dynamics. The
model systematically approximates the continuum partial differential equations,
but has the same level of computational complexity as molecular dynamics and is
constraint free. Numerical tests show that the algorithm is much more stable
than a finite-difference formulation and can be used for high aspect ratio
filaments, such as actin.
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I like my Ronald Colman dashing and debonair, the fellow you see in such films as If I Were King and Kismet. I like him as the epitome of civilization as in The Lost Horrizon and Random Harvest. A brooding Colman isn't a favorite of mine.<br /><br />But in A Double Life precisely because his part as actor Anthony John is so offbeat for him, Colman was recognized with a Best Actor Oscar for 1947. It became his best known part.<br /><br />Colman is an actor who really does take the Method quite seriously. He's just finished a successful run in a comedy of manners and he's quite the jovial fellow. For a change of pace now that that play has concluded its Broadway run, Colman is bringing a revival of Othello to New York. About as opposite a part as you can get.<br /><br />His leading lady in both is his former wife Signe Hasso who loves him dearly, but can't take his change of moods when he's at work. Colman loves her dearly as well and wants her back. But he's heading for a mental breakdown when he starts confusing himself with the jealous Moor Othello and Hasso with her role as Desdemona.<br /><br />Unfortunately Shelley Winters as a poor waitress who a depressed Colman picks up gets in the way of his madness and she winds up like poor Desdemona in the play. Killed in the same manner and now it's a matter for homicide cop Joe Sawyer.<br /><br />Colman's performance is so good that one does kind of wonder is this an occupational hazard with actors? I'd shudder to think so, were there any unsolved homicides in or around Laurence Olivier and Orson Welles then they essayed Othello. <br /><br />I could never quite buy the story for that reason, but I certainly do applaud Ronald Colman and what he did with the part. I'm sure there was a tinge of regret in him winning the Oscar though because one of the other nominees was his good friend William Powell for Life With Father. Others in the running that year were Gregory Peck for Gentlemen's Agreement, John Garfield for Body and Soul, and Michael Redgrave for Mourning Becomes Electra.<br /><br />Colman gets able support from the rest of the cast including Edmond O'Brien who finds himself in the unwanted part of Cassio in Colman's jealous fantasy. Still you will find no Iago equivalent in A Double Life, no one prodding the jealousy, it's all in his own mind.<br /><br />And that from one of the most cultivated and civilized minds of the last century.
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We show asymptotic completeness for the charged Klein-Gordon equation in the
exterior De Sitter-Reissner-Nordstr\"om spacetime when the product of the
charge of the black hole with the charge of Klein-Gordon field is small enough.
We then interpret scattering as asymptotic transports along principal null
geodesics in a Kaluza-Klein extension of the original spacetime.
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A study of fossil tracks of charged particles recorded in crystals of
muscovite has revealed evidence of rare events of cosmological origin. The
events are not compatible with known particle interactions with matter. They
were recorded during a period when the crystals were in a metastable state
during cooling after growth 13km water equivalent underground. In this state a
phase transition can be triggered by low energy events in the range 1eV to
10keV, when the crystals effectively behave as solid-state bubble chambers. At
higher energies the chemical etching technique can be used to reveal massive
damage to the lattice. The rare events show evidence of interaction with the
crystal over a great range of energies. They leave a distinctive record that is
easily recognised.
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Ultrafast processes in matter can be captured and even controlled by using
sequences of few-cycle optical pulses, which need to be well characterized,
both in amplitude and phase. The same degree of control has not yet been
achieved for few-cycle extreme ultraviolet pulses generated by high-order
harmonic generation in gases, with duration in the attosecond range. Here, we
show that by varying the spectral phase and carrier-envelope phase (CEP) of a
high-repetition rate laser, using dispersion in glass, we achieve a high degree
of control of the relative phase and CEP between consecutive attosecond pulses.
The experimental results are supported by a detailed theoretical analysis based
upon the semiclassical three-step model for high-order harmonic generation.
|
Cats hate Velcro.
I should have read the reviews before purchasing. Anyone that knows anything about cats knows that cats HATE the sound of velcro. While my cat doesn’t mind being in this he freaks out when it’s removed from the loud sound. Update: My cat escaped from this holster. Waste of money.
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BackgroundThe increased usage of error-prone long-read sequencing for metabarcoding of fungi has not been matched with adequate public databases and concomitant analysis approaches. We address this gap and present a proof-of-concept study for classifying fungal taxa using linked machine learning classifiers. We demonstrate the capability of linked machine learning classifiers to accurately classify species and strains using real-world and simulated fungal ribosomal DNA datasets, including plant and human pathogens. We benchmark our new approach in comparison to current alignment and k-mer based methods based on synthetic mock communities. We also assess real world applications of species identification in complex unlabelled datasets.
ResultsOur machine learning approach assigned individual nanopore long-read amplicon sequences to fungal species with high recall rates and low false positive rates. Importantly, our approach successfully distinguished between closely-related species and strains when individual read errors were higher than the genetic distance between individual taxa, which the alignment and k-mer methods could not do. The machine learning approach showed an ability to identify key species with high recall rates, even in complex samples of unknown species composition.
ConclusionsA proof of concept machine learning approach using a tree-descent approach on a decision tree of classifiers can identify known taxa with high accuracy, and precisely detect known target species from complex samples with high recall rates. We propose this approach is suitable for detecting the known knowns of pathogens or invasive species in any environment of mostly unknown composition, including agriculture and wild ecosystems.
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Purpose: CMOS pixel sensors have become extremely attractive for future high
performance tracking devices. Initial R\&D work has been conducted for the
vertex detector for the proposed Circular Electron Positron Collider that will
allow precision Higgs measurements. It is critical to achieve low power
consumption to minimize the material budget. This requires careful optimization
of the sensor diode geometry to reach high charge-over-capacitance that allows
reduction in analog power consumption.
Methods: The electrode area and footprint are two critical elements in sensor
diode geometry and have deciding impacts on the sensor charge collection
performance. Prototype CMOS pixel sensor JadePix-1 has been developed with
pixel sectors implementing different electrode area and footprint and their
charge collection performance has been characterized with radioactive
resources.
Results: Charge-to-voltage conversion gains are calibrated with low energy
X-ray. Noise, charge collection efficiency, charge-over-capacitance and
signal-to-noise ratio are obtained for pixel sectors of different electrode
area and footprint.
Conclusion: Small electrode area and large footprint are preferred to achieve
high charge-over-capacitance that promises low analog power consumption.
Ongoing studies on sensor performance before and after irradiation, combined
with this work, will conclude on the diode geometry optimization.
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We investigate the transition to synchronization in the Kuramoto model with
bimodal distributions of the natural frequencies. Previous studies have
concluded that the model exhibits a hysteretic phase transition if the bimodal
distribution is close to a unimodal one, due to the shallowness the central
dip. Here we show that proximity to the unimodal-bimodal border does not
necessarily imply hysteresis when the width, but not the depth, of the central
dip tends to zero. We draw this conclusion from a detailed study of the
Kuramoto model with a suitable family of bimodal distributions.
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Four lectures on invertible field theories at the Park City Mathematics
Institute 2019. Cobordism categories are introduced both as plain categories
and topologically enriched. We then discuss localization of categories and its
relationship to classifying spaces, and state the main theorem of
classification of invertible field theories in these terms. We also discuss
symmetric monoidal structures and their relationship to actions of the little
disk operads. In the final lecture we discuss an application of cobordism
categories to characteristic classes of surface bundles. Emphasis will be on
self-contained definitions and statements, referring to original literature for
proofs. We also include problem sets from the three exercise sessions at the
summer school, and solutions to two problems.
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The Serpens SMM 1 region was observed in the 6.9 mm continuum with an angular
resolution of about 0.6 arcsec. Two sources were found to have steep positive
spectra suggesting emission from dust. The stronger one, SMM 1a, is the driving
source of the bipolar jet known previously, and the mass of the dense molecular
gas traced by the millimeter continuum is about 8 solar mass. The newly found
source, SMM 1b, positionally coincides with the brightest mid-IR source in this
region, which implies that SMM 1b is yet another young stellar object. SMM 1b
seems to be less deeply embedded than SMM 1a. SMM 1 is probably a protobinary
system with a projected separation of 500 AU.
|
We report on the etching of graphene devices with a helium ion beam,
including in situ electrical measurement during lithography. The etching
process can be used to nanostructure and electrically isolate different regions
in a graphene device, as demonstrated by etching a channel in a suspended
graphene device with etched gaps down to about 10 nm. Graphene devices on
silicon dioxide (SiO2) substrates etch with lower He ion doses and are found to
have a residual conductivity after etching, which we attribute to contamination
by hydrocarbons.
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We point out that the nonempty $R_h=ct$ cosmological model has some known
antecedents in the literature. Some of those eternal coasting models are
published even before the discovery of the accelerated expansion of the
universe and were shown to have none of the commonly discussed cosmological
problems and also that $H_0t_0=1$. The $R_h=ct$ model is only the special
(flat) case of the eternal coasting model. An additional feature in the
coasting model is that $\Omega_m/\Omega_{dark \; energy}$ = some constant of
the order of unity, so that also the cosmic coincidence problem is avoided.
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Siamese networks have drawn great attention in visual tracking because of
their balanced accuracy and speed. However, the backbone networks used in
Siamese trackers are relatively shallow, such as AlexNet [18], which does not
fully take advantage of the capability of modern deep neural networks. In this
paper, we investigate how to leverage deeper and wider convolutional neural
networks to enhance tracking robustness and accuracy. We observe that direct
replacement of backbones with existing powerful architectures, such as ResNet
[14] and Inception [33], does not bring improvements. The main reasons are that
1)large increases in the receptive field of neurons lead to reduced feature
discriminability and localization precision; and 2) the network padding for
convolutions induces a positional bias in learning. To address these issues, we
propose new residual modules to eliminate the negative impact of padding, and
further design new architectures using these modules with controlled receptive
field size and network stride. The designed architectures are lightweight and
guarantee real-time tracking speed when applied to SiamFC [2] and SiamRPN [20].
Experiments show that solely due to the proposed network architectures, our
SiamFC+ and SiamRPN+ obtain up to 9.8%/5.7% (AUC), 23.3%/8.8% (EAO) and
24.4%/25.0% (EAO) relative improvements over the original versions [2, 20] on
the OTB-15, VOT-16 and VOT-17 datasets, respectively.
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In the learning to learn (L2L) framework, we cast the design of optimization
algorithms as a machine learning problem and use deep neural networks to learn
the update rules. In this paper, we extend the L2L framework to zeroth-order
(ZO) optimization setting, where no explicit gradient information is available.
Our learned optimizer, modeled as recurrent neural network (RNN), first
approximates gradient by ZO gradient estimator and then produces parameter
update utilizing the knowledge of previous iterations. To reduce high variance
effect due to ZO gradient estimator, we further introduce another RNN to learn
the Gaussian sampling rule and dynamically guide the query direction sampling.
Our learned optimizer outperforms hand-designed algorithms in terms of
convergence rate and final solution on both synthetic and practical ZO
optimization tasks (in particular, the black-box adversarial attack task, which
is one of the most widely used tasks of ZO optimization). We finally conduct
extensive analytical experiments to demonstrate the effectiveness of our
proposed optimizer.
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We show that ground state solutions to the nonlinear, fractional problem
\begin{align*} \left\{
\begin{array}{ll}
(-\Delta)^{s} u + V(x) u = f(x,u) &\quad \mathrm{in} \ \Omega, \newline
u = 0 &\quad \mathrm{in} \ \mathbb{R}^N \setminus \Omega, \end{array} \right.
\end{align*} on a bounded domain $\Omega \subset \mathbb{R}^N$, converge (along
a subsequence) in $L^2 (\Omega)$, under suitable conditions on $f$ and $V$, to
a solution of the local problem as $s \to 1^-$.
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In 1985, Dunwoody showed that finitely presentable groups are accessible.
Dunwoody's result was used to show that context-free groups, groups
quasi-isometric to trees or finitely presentable groups of asymptotic dimension
1 are virtually free. Using another theorem of Dunwoody of 1979, we study when
a group is virtually free in terms of its Cayley graph and we obtain new proofs
of the mentioned results and other previously depending on them.
|
Multipartite quantum entanglement serves as a resource for spatially
separated parties performing distributed quantum information processing. Any
multipartite entangled state can be generated from appropriately distributed
bipartite entangled states by local operations and classical communication
(LOCC), and in this sense, any distributed process based on shared multipartite
entanglement and LOCC is simulatable by using only bipartite entangled states
and LOCC. We show here that this reduction scenario does not hold when there
exists a limitation on the size of the local quantum system of each party.
Under such a limitation, we prove that there exists a set of multipartite
quantum states such that these states in the set cannot be prepared from any
distribution of bipartite entanglement while the states can be prepared from a
common resource state exhibiting multipartite entanglement. We also show that
temporal uses of bipartite quantum communication resources within a limitation
of local system sizes are sufficient for preparing this common resource state
exhibiting multipartite entanglement, yet there also exist other states
exhibiting multipartite entanglement which cannot be prepared even in this
setting. Hence, when the local quantum system sizes are limited, multipartite
entanglement is an indispensable resource without which certain processes still
cannot be accomplished.
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An analogue of the correspondence between GL(k)-conjugacy classes of
matricial polynomials and line bundles is given for K-conjugacy classes, where
K is one of the following: maximal parabolic, maximal torus, GL(k-1) embedded
diagonally. The generalised Legendre transform construction of hyperkaehler
metrics is studied further, showing that many known hyperkaehler metrics
(including the ones on coadjoint orbits) arise in this way, and giving a large
class of new (pseudo-)hyperkaehler metrics, analogous to monopole metrics.
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The length $a(n)$ of the longest common subsequence of the $n$'th Thue-Morse
word and its bitwise complement is studied. An open problem suggested by Jean
Berstel in 2006 is to find a formula for $a(n)$. In this paper we prove new
lower bounds on $a(n)$ by explicitly constructing a common subsequence between
the Thue-Morse words and their bitwise complement. We obtain the lower bound
$a(n) = 2^{n}(1-o(1))$, saying that when $n$ grows large, the fraction of
omitted symbols in the longest common subsequence of the $n$'th Thue-Morse word
and its bitwise complement goes to $0$. We further generalize to any prefix of
the Thue-Morse sequence, where we prove similar lower bounds.
|
These products are good, exactly as described and even came with different ...
These products are good, exactly as described and even came with different grips for inside the ear. The only downfall is the earbuds i ordered were incorrect so i am at this time unable to officially use my straps. But so far they seem very good!!
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We study the solution of the system of equations describing the dynamical
evolution of spontaneous ruptures generated in a prestressed
elastic-gravitational deforming body and governed by rate and state friction
laws. We propose an iterative coupling scheme based on a weak formulation with
nonlinear interior boundary conditions, both for continuous time and with
implicit discretization (backward Euler) in time. We regularize the problem by
introducing viscosity. This guarantees the convergence of the scheme for
solutions of the regularized problems in both cases. We also make precise the
conditions on the relevant coefficients for convergence to hold.
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It’s ok
I HATED the noise it made when I was trying to sleep, so I had to turn it off and didn’t get to wake up to a good scent. Other than that the light change was peaceful, and I was able to turn it on when I was awake and trying to do my homework.
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We consider the quadractic NLS posed on a bidimensional compact Riemannian
manifold $(M, g)$ with $ \partial M \neq \emptyset$. Using bilinear and
gradient bilinear Strichartz estimates for Schr\"odinger operators in
two-dimensional compact manifolds proved by J. Jiang in \cite{JIANG} we deduce
a new evolution bilinear estimates. Consequently, using Bourgain's spaces, we
obtain a local well-posedness result for given data $u_0\in H^s(M)$ whenever
$s> \frac{2}{3}$ in such manifolds.
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I went to see it in hopes of some good old fashioned Alice Entertainment.Once I realized I would not be getting that,I watched it for a pretty well made movie (in terms of filming,and yeah..that was it).But aside from it having a good film quality,considering I had been watching grainy movies all day long,there was nothing good about that movie.<br /><br />He killed 42.Why were Tweedle Dee and Dum played by Mudler and Scully?Serisouly,Who can answer that for me?Who can answer anything awful about this movie for me.<br /><br />I agree with whoever said it was just one big long inside joke for the staff.That's all it seemed to be.<br /><br />Poor Mr.Carroll.I'm so sorry somebody did that to his wonderful tales.
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We study the relation between the causality and the positivity of energy
bounds in Gauss-Bonnet gravity in AdS_7 background and find a precise
agreement. Requiring the group velocity of metastable states to be bounded by
the speed of light places a bound on the value of Gauss-Bonnet coupling. To
find the positivity of energy constraints we compute the parameters which
determine the angular distribution of the energy flux in terms of three
independent coefficients specifying the three-point function of the
stress-energy tensor. We then relate the latter to the Weyl anomaly of the
six-dimensional CFT and compute the anomaly holographically. The resulting
upper bound on the Gauss-Bonnet coupling coincides with that from causality and
results in a new bound on viscosity/entropy ratio.
|
Because of their large number of stars spread over the entire stellar mass
spectrum, starburst clusters are highly suitable to benchmark and calibrate
star formation models and theories. Among the handful of Galactic starburst
clusters, Westerlund 1 with its estimated 150 O-stars, W-R stars, supergiants
and hypergiants is the most massive young cluster identified to date in the
Milky Way. While previous studies of Westerlund 1 focused largely on optical
and X-ray observations of its evolved massive stellar population, we have
analyzed near-infrared data, resulting in the first in depth study of the
``lower-mass'' main sequence and pre-main sequence cluster population, i.e., of
stars in the mass range 0.4 to 30 solar masses. The derived properties of the
cluster population allow us to test theoretical evolutionary tracks. By
comparison of Westerlund 1's half-mass radius with younger starburst clusters
like NGC 3603 YC and Arches, and somewhat older massive clusters like RSGC1 and
RSGC2, we find evidence for a rapid dissolution of Galactic starburst clusters,
which has interesting implications for the long-term survival of starburst
clusters, and the question to which extent Galactic starburst clusters might
mimic proto-globular clusters.
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Attention has become more attractive in person reidentification (ReID) as it
is capable of biasing the allocation of available resources towards the most
informative parts of an input signal. However, state-of-the-art works
concentrate only on coarse or first-order attention design, e.g. spatial and
channels attention, while rarely exploring higher-order attention mechanism. We
take a step towards addressing this problem. In this paper, we first propose
the High-Order Attention (HOA) module to model and utilize the complex and
high-order statistics information in attention mechanism, so as to capture the
subtle differences among pedestrians and to produce the discriminative
attention proposals. Then, rethinking person ReID as a zero-shot learning
problem, we propose the Mixed High-Order Attention Network (MHN) to further
enhance the discrimination and richness of attention knowledge in an explicit
manner. Extensive experiments have been conducted to validate the superiority
of our MHN for person ReID over a wide variety of state-of-the-art methods on
three large-scale datasets, including Market-1501, DukeMTMC-ReID and CUHK03-NP.
Code is available at http://www.bhchen.cn/.
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We explore Carroll limit corresponding to M2 as well as M3 branes propagating
over 11D supergravity backgrounds in M theory. In the first part of the
analysis, we introduce the membrane Carroll limit associated to M2 branes
propagating over M theory supergravity backgrounds. Considering two specific M2
brane embeddings, we further outline the solutions corresponding to the
Hamilton's dynamical equations in the Carroll limit. We further consider the so
called \textit{stringy} Carroll limit associated to M2 branes and outline the
corresponding solutions to the underlying Hamilton's equations of motion by
considering specific M2 brane embeddings over 11D target space geometry. As a
further illustration of our analysis, considering the Nambu-Goto action, we
show the equivalence between different world-volume descriptions in the Carroll
limit of M2 branes. Finally, considering the \textit{stringy} Carroll limit, we
explore the constraint structure as well as the Hamiltonian dynamics associated
to unstable M3 branes in 11D supergravity and obtain the corresponding
effective world-volume description around their respective tachyon vacua.
|
This is a very sad time for baseball fans who cared about a great player with the dedication, determination and excellence of Doc Halladay.
But it must be observed that unlike Barry Bonds whose juicing resulted in close to 50 more pounds and different hat and even shoe sizes and changed him from a speedy base stealing doubles hitter to a slow footed home run slugger with double his previous HR production, Clemens looked the same and pitched the same after using HGHs as he had before. Just saying.
But could we stop parsing every word of posters we don't like long enough to keep from squabbling at such a profoundly sad time for baseball fans and the Halladay family?
Roy "Doc" Halladay was one of and I argue THE greatest home grown pitchers ever produced by the Blue Jays.
Everything else on this sad day is just childish and churlish noise.
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We consider the effect of a periodic perturbation with frequency $\omega$ on
the holographic N=4 plasma represented by the planar AdS black hole. The
response of the system is given by exponentially decaying waves. The
corresponding complex wave numbers can be found by solving wave equations in
the AdS black hole background with infalling boundary conditions on the horizon
in an analogous way as in the calculation of quasinormal modes. The complex
momentum eigenvalues have an interpretation as poles of the retarded Green's
functions, where the inverse of the imaginary part gives an absorption length
$\lambda$. At zero frequency we obtain the screening length for a static field.
These are directly related to the glueball masses in the dimensionally reduced
theory. We also point out that the longest screening length corresponds to an
operator with non-vanishing R-charge and thus does not have an interpretation
as a QCD3 glueball.
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We present new high resolution (R>50,000) absorption measurements of the NaI
doublet (5889 - 5895A) along 482 nearby sight-lines, in addition to 807 new
measurements of the CaII K (3933A) absorption line. We have combined these new
data with previously reported measurements to produce a catalog of absorptions
towards a total of 1857 early-type stars located within 800pc of the Sun. Using
these data we have determined the approximate 3-dimensional spatial
distribution of neutral and partly ionized interstellar gasdensity within a
distance-cube of 300pc from the Sun. All newly recorded spectra were analyzed
by means of a multi-component line profile-fitting program, in most cases using
simultaneous fits to the line doublets. Normalized absorption profiles were
fitted by varying the velocity, doppler width and column density for all
intervening interstellar clouds. The resulting total column densities were then
used in conjunction with the Hipparcos distances of the target stars to
construct inversion maps of the 3-D spatial density distribution of the NaI and
CaII bearing gas. A plot of the equivalent width of NaI versus distance reveals
a wall of neutral gas at ~80pc that can be associated with the boundary wall to
the central rarefied Local Cavity region. In contrast, a similar plot for the
equivalent width of CaII shows no sharply increasing absorption at 80pc, but
instead we observe a slowly increasing value of CaII equivalent width with
increasing sight-line distance sampled.
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Smillie (1984) proved an interesting result on the stability of nonlinear,
time-invariant, strongly cooperative, and tridiagonal dynamical systems. This
result has found many applications in models from various fields including
biology, ecology, and chemistry. Smith (1991) has extended Smillie's result and
proved entrainment in the case where the vector field is time-varying and
periodic. We use the theory of linear totally nonnegative differential systems
developed by Schwarz (1970) to give a generalization of these two results. This
is based on weakening the requirement for strong cooperativity to
cooperativity, and adding an additional observability-type condition.
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Let $\mathcal{C}$ be a decomposable plane curve over an algebraically closed
field $k$ of characteristic 0. That is, $\mathcal{C}$ is defined in $k^2$ by an
equation of the form $g(x) = f(y)$, where $g$ and $f$ are polynomials of degree
at least 2. We use this data to construct 3 pointed Hopf algebras, $A(x,a,g)$,
$A(y,b,f)$ and $A(g,f)$, in the first two of which $g$ [resp. $f$] are skew
primitive central elements, and the third being a factor of the tensor product
of the first two. We conjecture that $A(g,f)$ contains the coordinate ring
$\mathcal{O}(\mathcal{C})$ of $\mathcal{C}$ as a quantum homogeneous space, and
prove this when each of $g$ and $f$ has degree at most 5 or is a power of the
variable. We obtain many properties of these Hopf algebras, and show that, for
small degrees, they are related to previously known algebras. For example, when
$g$ has degree 3 $A(x,a,g)$ is a PBW deformation of the localisation at powers
of a generator of the downup algebra $A(-1,-1,0)$.
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1989 was already a year in where Eddie Murphy wasn't that longer hot and started making movies that soon would be forgotten. Funnily enough, it was also the year in where Murphy directed his first film, but it also would be the first and last experiment. "Harlem nights" wasn't exactly what you can call a success even if it was great to see the two best black comedians together namely Murphy and Richard Pryor. Don't blame it on the actors as they all played their roles like you expected them do, even if you have to face (again) the typical Murphy-laugh. The worst thing from "Harlem nights" are both the scenario and its terrible decors. Everything is set in the roaring twenties and everybody has their profit from the forbidden clubs. Sugar Ray (Pryor) and his adopted son Quickie (Murphy) are gathering easily 10000 dollar per day but of course soon the mob and the corrupt police come around the corner to claim their part of the cookie. Sugar and Quickie aren't guys who give their money for free and have their own plans. You can watch "Harlem Nights" that's for sure, but if you puke from the moment you hear the name Murphy you better avoid as after all this movie is nothing but a lame excuse to see some good jokes.
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As of May 2017, Anthony Joshua is ranked as the world's best heavyweight by the Transnational Boxing Rankings Board and BoxRec, the second British boxer, after which British professional boxer, to win both a gold medal at the Olympics and a world title by a major professional sanctioning body, as well as being the first British heavyweight to do so?
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We consider a four-parameter family of non-Volterra operators defined on the
two-dimensional simplex and show that, with one exception, each such operator
has a unique fixed point. Depending on the parameters, we establish the type of
this fixed point. We study the set of limit points for each trajectory and show
that this set can be a single point or can contain a 2-periodic trajectory.
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Pay back all the money you idiots wasted on "traffic calming devices" over the last 40 years, along with all the road fund money spent on buses and bikes.... with interest. Then come back and tell us how much you need.
We know what ur up to Rob.... Designated funding for roads so you can free up other funding for PERS.
You people need to be fired for negligent mismanagement of taxpayer money.
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In recent years, the task of segmenting foreground objects from background in
a video, i.e. video object segmentation (VOS), has received considerable
attention. In this paper, we propose a single end-to-end trainable deep neural
network, convolutional gated recurrent Mask-RCNN, for tackling the
semi-supervised VOS task. We take advantage of both the instance segmentation
network (Mask-RCNN) and the visual memory module (Conv-GRU) to tackle the VOS
task. The instance segmentation network predicts masks for instances, while the
visual memory module learns to selectively propagate information for multiple
instances simultaneously, which handles the appearance change, the variation of
scale and pose and the occlusions between objects. After offline and online
training under purely instance segmentation losses, our approach is able to
achieve satisfactory results without any post-processing or synthetic video
data augmentation. Experimental results on DAVIS 2016 dataset and DAVIS 2017
dataset have demonstrated the effectiveness of our method for video object
segmentation task.
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Okay, the film festival crowd probably loved it. But your average, popcorn munching movie goer who has scraped to-gether the ten or fifteen bucks it costs to see a movie these days will probably wonder why he or she made this choice. If it's stamped "Copolla" it's automatically great stuff, right? Wrong! It's a neat spoof of filmdom's pretensions. But it's terribly "in." I worry when film makers are more concerned about entertaining themselves rather than the public. It's interesting as a cinematic curio and it does have a chuckle or two in it. But once it's run its course in the movies and on TV, the dust will grow thick on the film cans and tape boxes holding it. Hardly either epochal or an epic!
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We prove asymptotic 0-1 Laws satisfied by diagrams of unimodal sequences of
positive integers. These diagrams consist of columns of squares in the plane,
and the upper boundary is called the shape. For various types, we show that, as
the number of squares tends to infinity, $100\%$ of shapes are near a certain
curve---that is, there is a single {\it limit shape}. Similar phenomena have
been well-studied for integer partitions, so the present work is a natural
extension. One notable corollary is a transferred limit shape for
overpartitions.
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The norm closure of the algebra generated by the set $\{n\mapsto
{\lambda}^{n^k}:$ $\lambda\in{\mathbb {T}}$ and $k\in{\mathbb{N}}\}$ of
functions on $({\mathbb {Z}}, +)$ was studied in \cite{S} (and was named as the
Weyl algebra). In this paper, by a fruitful result of Namioka, this algebra is
generalized for a general semitopological semigroup and, among other things, it
is shown that the elements of the involved algebra are distal. In particular,
we examine this algebra for $({\mathbb {Z}}, +)$ and (more generally) for the
discrete (additive) group of any countable ring. Finally, our results are
treated for a bicyclic semigroup.
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The scheduling and schedulability analysis of real-time directed acyclic
graph (DAG) task systems have received much recent attention. The DAG model can
accurately represent intra-task parallelim and precedence constraints existing
in many application domains. Existing techniques show that analyzing the DAG
model is fundamentally more challenging compared to the ordinary sporadic task
model, due to the complex intra-DAG precedence constraints which may cause
rather pessimistic schedulability loss. However,such increased loss is
counter-intuitive because the DAG structure shall better exploit the
parallelism provided by the multiprocessor platform. Our observation is that
the intra-DAG precedence constraints, if not carefully considered by the
scheduling algorithm, may cause very unpredictable execution behaviors of
subtasks in a DAG and further cause pessimistic analysis. In this paper, we
present a set of novel scheduling and analysis techniques for better supporting
hard real-time sporadic DAG tasks on multiprocessors, through smartly defining
and analyzing the execution order of subtasks in each DAG. Evaluation
demonstrates that our developed utilization-based schedulability test is highly
efficient, which dramatically improves schedulability of existing
utilization-based tests by over 60% on average. Interestingly, when each DAG in
the system is an ordinary sporadic task, our test becomes identical to the
classical density test designed for the sporadic task model.
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Hello, can anybody hear me? I don't know why you came to this page, but if you're a fellow viewer of this movie: join the fanclub! This movie was so unbelievably bad I couldn't stop laughing when I saw it. I think it's a must see, it's bad in a nice way. Every cliche ever invented for a horror movie can be seen here. I'm afraid it's very hard to get a copy of this movie, but it should be in the top 10 of worst movies ever made.
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The dynamics of convecting fluids in rotating spherical shells is governed at
Prandtl numbers of the order unity by the interaction between differential
rotation and roll-like convection eddies. While the differential rotation is
driven by the Reynolds stresses of the eddies, its shearing action inhibits
convection and causes phenomena such as localized convection and turbulent
relaxation oscillations. The response of the system is enriched in the case of
dynamo action. Lorentz forces may brake either entirely or partially the
geostrophic differential rotation and give rise to two rather different dynamo
states. Bistability of turbulent dynamos exists for magnetic Prandtl numbers of
the order unity. While the ratios between mean magnetic and kinetic energies
differ by a factor of 5 or more for the two dynamo states, the mean convective
heat transports are nearly the same. They are much larger than in the absence
of a magnetic field.
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Two new formulations of general relativity are introduced. The first one is a
parabolization of the Arnowitt, Deser, Misner (ADM) formulation and is derived
by addition of combinations of the constraints and their derivatives to the
right-hand-side of the ADM evolution equations. The desirable property of this
modification is that it turns the surface of constraints into a local attractor
because the constraint propagation equations become second-order parabolic
independently of the gauge conditions employed. This system may be classified
as mixed hyperbolic - second-order parabolic. The second formulation is a
parabolization of the Kidder, Scheel, Teukolsky formulation and is a manifestly
mixed strongly hyperbolic - second-order parabolic set of equations, bearing
thus resemblance to the compressible Navier-Stokes equations. As a first test,
a stability analysis of flat space is carried out and it is shown that the
first modification exponentially damps and smoothes all constraint violating
modes. These systems provide a new basis for constructing schemes for long-term
and stable numerical integration of the Einstein field equations.
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In this paper we describe the right-sided combinatorial Hopf structure of
three Hopf algebras appearing in the context of renormalization in quantum
field theory: the non-commutative version of the Fa\`a di Bruno Hopf algebra,
the non-commutative version of the charge renormalization Hopf algebra on
planar binary trees for quantum electrodynamics, and the non-commutative
version of the Pinter renormalization Hopf algebra on any bosonic field. We
also describe two general ways to define the associative product in such Hopf
algebras, the first one by recursion, and the second one by grafting and
shuffling some decorated rooted trees.
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BackgroundAlzheimers disease (AD) is characterized by the presence of both extracellular amyloid-{beta} (A{beta}) plaques and intracellular tau accumulations. The causative interactions between these lesions, and the subsequent neuroinflammation, synaptic alterations and memory impairment are still debated. Intracerebral infusion of human AD brain extracts in A{beta} bearing mice that do not overexpress pathological tau proteins induces widespread A{beta} and tau pathologies following heterotopic seeding of mouse tau. These models provide a unique opportunity to assess relationships between AD lesions and downstream events.
MethodsHuman AD and control-brain extracts (ADbe and Ctrlbe) were infused in the hippocampus of A{beta} plaque-bearing APPswe/PS1dE9 mice. We evaluated the links between A{beta} plaques, tau aggregates, microgliosis, astrogliosis at the inoculation site and in connected regions (perirhinal/entorhinal cortex), and memory impairment and synaptic density 4 and 8 months post-inoculation.
ResultsADbe-inoculated animals displayed memory deficit and synaptic loss in addition to A{beta} and tau pathological aggregates. A{beta} plaques were detected in both ADbe- and Ctrlbe-inoculated APPswe/PS1dE9 mice, but their load was increased close to the inoculation site in ADbe- inoculated animals. Tau-positive neuropil threads and neurofibrillary tangles occurred next to the inoculation site only in ADbe-inoculated animals and were not detected in Ctrlbe mice. These lesions spread to connected regions notably the perirhinal/entorhinal cortex. Tau-positive neuritic plaques were detected in both ADbe- and Ctrlbe-inoculated animals. Unexpectedly, ADbe inoculation did not increase the number of neuritic plaques close to the inoculation site as compared to Ctrlbe inoculation. ADbe inoculation however increased the area of tau-positive elements within these neuritic plaques. Increased tau pathology as well as lower Iba1-positive microglial load in the hippocampus and perirhinal/entorhinal cortex were correlated with memory impairment and with synaptic loss.
ConclusionsThe integrative analysis of pathological events associated with ADbe inoculation in A{beta}-bearing mice highlighted memory and synaptic loss as well as the induction of tau lesions that spread in the brain. Increased tau lesions and lower microglial load are the two main events correlated with memory impairment and synaptic loss. The study suggests that microglial activity may be protective.
Graphical abstract
O_FIG O_LINKSMALLFIG WIDTH=200 HEIGHT=174 SRC="FIGDIR/small/438654v3_ufig1.gif" ALT="Figure 1">
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org.highwire.dtl.DTLVardef@10e62dorg.highwire.dtl.DTLVardef@177b11corg.highwire.dtl.DTLVardef@10cd534org.highwire.dtl.DTLVardef@18178a5_HPS_FORMAT_FIGEXP M_FIG C_FIG
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Many systems have to be maintained while the underlying constraints, costs
and/or profits change over time. Although the state of a system may evolve
during time, a non-negligible transition cost is incured for transitioning from
one state to another. In order to model such situations, Gupta et al. (ICALP
2014) and Eisenstat et al. (ICALP 2014) introduced a multistage model where the
input is a sequence of instances (one for each time step), and the goal is to
find a sequence of solutions (one for each time step) that are both (i) near
optimal for each time step and (ii) as stable as possible. We focus on the
multistage version of the Knapsack problem where we are given a time horizon
t=1,2,...,T, and a sequence of knapsack instances I_1,I_2,...,I_T, one for each
time step, defined on a set of n objects. In every time step t we have to
choose a feasible knapsack S_t of I_t, which gives a knapsack profit. To
measure the stability/similarity of two consecutive solutions S_t and S_{t+1},
we identify the objects for which the decision, to be picked or not, remains
the same in S_t and S_{t+1}, giving a transition profit. We are asked to
produce a sequence of solutions S_1,S_2,...,S_T so that the total knapsack
profit plus the overall transition profit is maximized.
We propose a PTAS for the Multistage Knapsack problem. Then, we prove that
there is no FPTAS for the problem even in the case where T=2, unless P=NP.
Furthermore, we give a pseudopolynomial time algorithm for the case where the
number of steps is bounded by a fixed constant and we show that otherwise the
problem remains NP-hard even in the case where all the weights, profits and
capacities are 0 or 1.
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We investigate the dynamics of semigroups generated by polynomial maps on the
Riemann sphere such that the postcritical set in the complex plane is bounded.
Moreover, we investigate the associated random dynamics of polynomials.
Furthermore, we investigate the fiberwise dynamics of skew products related to
polynomial semigroups with bounded planar postcritical set. Using uniform
fiberwise quasiconformal surgery on a fiber bundle, we show that if the Julia
set of such a semigroup is disconnected, then there exist families of
uncountably many mutually disjoint quasicircles with uniform dilatation which
are parameterized by the Cantor set, densely inside the Julia set of the
semigroup. Moreover, we give a sufficient condition for a fiberwise Julia set
$J_{\gamma}$ to satisfy that $J_{\gamma}$ is a Jordan curve but not a
quasicircle, the unbounded component of the complement of $J_{\gamma}$ is a
John domain and the bounded component of the complement of $J_{\gamma}$ is not
a John domain. We show that under certain conditions, a random Julia set is
almost surely a Jordan curve, but not a quasicircle. Many new phenomena of
polynomial semigroups and random dynamics of polynomials that do not occur in
the usual dynamics of polynomials are found and systematically investigated.
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We report influence of encapsulated C60 molecules on electron transport in
carbon-nanotube peapod quantum dots. We find atomic-like behaviors with doubly
degenerate electronic levels, which exist only around ground states, by single
electron spectroscopy measured at low back-gate voltages (Vbg). Correlation
with presence of nearly free electrons (NFEs) unique to the peapods is
discussed. Moreover, we find anomalously high values of power a observed in
power laws in conductance versus energy relationships, which are strongly
associated with the doubly degenerate levels. It is revealed that the powers
originate from Tomonaga-Luttinger liquid via the occupied doubly degenerate
levels. Our observations clarify that the encapsulated C60 molecules form
doubly degenerate levels only at ground state in peapod quantum dots and do not
eliminate a ballistic charge transport.
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It is known that the biological activity of the brain involves radiation of
electric waves. These waves result from ionic currents and charges traveling
among the brain's neurons. But it is obvious that these ions and charges are
carried by their relevant masses which should give rise, according to the
gravitational theory, to extremely weak gravitational waves.
We use in the following the stochastic quantization (SQ) theory to calculate
the probability to find a large ensemble of brains radiating similar
gravitational waves. We also use this SQ theory to derive the equilibrium state
related to the known Lamb shift.
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The cyclotron gas stopper is a newly proposed device to stop energetic rare
isotope ions from projectile fragmentation reactions in a helium-filled
chamber. The radioactive ions are slowed down by collisions with a buffer gas
inside a cyclotron-type magnet and are extracted via interactions with a Radio
Frequency (RF) field applied to a sequence of concentric electrodes (RF
carpet). The present study focuses on a detailed understanding of space charge
effects in the ion extraction region. The space charge is generated by the
ionized helium gas created by the stopping of the ions and eventually limits
the beam rate. Particle-in-cell simulations of a two-component
(electron-helium) plasma interacting via Coulomb forces were performed in the
space charge field created by the stopping beam.
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We present a general result of transverse nonlinear instability of 1-d
solitary waves for Hamiltonian PDE's for both periodic or localized transverse
perturbations. Our main structural assumption is that the linear part of the 1d
model and the transverse perturbation "have the same sign". Our result applies
to the generalized KP-I equation, the Nonlinear Schr\"odinger equation, the
generalized Boussinesq system and the Zakharov-Kuznetsov equation and we hope
that it may be useful in other contexts.
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No Don, not ad hominem.
“Ad hominem (Latin for "to the man" or "to the person"[1]), short for argumentum ad hominem, is a logical fallacy in which an argument is rebutted by attacking the character, motive, or other attribute of the person making the argument, or persons associated with the argument, rather than attacking the substance of the argument itself.[2]” - https://en.wikipedia.org/wiki/Ad_hominem
I was not attacking your character or motive. I was pointing out that the substance of your comment was plagiarized. Your comment, consisting of 13 words, copied 10 of those words verbatim from the writing of Paul Simon. Without attribution. Plagiarism is stealing, Don. I try to point it out whenever I see it.
On the other hand Don, your reply to my comment was “ad hominem”. You completely ignored the substance of my comment (your plagiarism) and suggested that I had some ulterior motive for making the comment.
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Exclusive $\pi^0$ electroproduction from nucleons at large $Q^2$ can be
described by Generalized Parton Distributions (GPDs), particularly the chiral
odd subset related to transversity. These GPDs can be accessed experimentally
from various cross sections and asymmetries. We calculate these GPDs in a
spectator model, constrained by boundary functions. Alternatively, in a
hadronic picture the meson production amplitudes correspond to C-odd Regge
exchanges with final state interactions. The helicity structure provides
relations between the partonic and the hadronic, Regge description of C-odd,
chiral-odd processes. Calculations show how the tensor charge and other
transversity parameters can be
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Asteroid (16) Psyche is the target of the NASA Psyche mission. It is
considered one of the few main-belt bodies that could be an exposed
proto-planetary metallic core and that would thus be related to iron
meteorites. Such an association is however challenged by both its near- and
mid-infrared spectral properties and the reported estimates of its density.
Here, we aim to refine the density of (16) Psyche to set further constraints on
its bulk composition and determine its potential meteoritic analog.
We observed (16) Psyche with ESO VLT/SPHERE/ZIMPOL as part of our large
program (ID 199.C-0074). We used the high angular resolution of these
observations to refine Psyche's three-dimensional (3D) shape model and
subsequently its density when combined with the most recent mass estimates. In
addition, we searched for potential companions around the asteroid. We derived
a bulk density of 3.99\,$\pm$\,0.26\,g$\cdot$cm$^{-3}$ for Psyche. While such
density is incompatible at the 3-sigma level with any iron meteorites
($\sim$7.8\,g$\cdot$cm$^{-3}$), it appears fully consistent with that of
stony-iron meteorites such as mesosiderites (density
$\sim$4.25\,$\cdot$cm$^{-3}$). In addition, we found no satellite in our images
and set an upper limit on the diameter of any non-detected satellite of
1460\,$\pm$\,200}\,m at 150\,km from Psyche (0.2\%\,$\times$\,R$_{Hill}$, the
Hill radius) and 800\,$\pm$\,200\,m at 2,000\,km (3\%\,$\times$\,$R_{Hill}$).
Considering that the visible and near-infrared spectral properties of
mesosiderites are similar to those of Psyche, there is merit to a
long-published initial hypothesis that Psyche could be a plausible candidate
parent body for mesosiderites.
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Calculations of central exclusive diffractive di-pion continuum production
are presented in the Regge-eikonal approach. Data from ISR, STAR, CDF and CMS
were analyzed and compared with theoretical description. We also consider
theoretical predictions for LHC, possible nuances and problems of calculations
and prospects of investigations at present and future hadron colliders.
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Controllable point junctions between different quantum Hall phases are a
necessary building block for the development of mesoscopic circuits based on
fractionally-charged quasiparticles. We demonstrate how particle-hole duality
can be exploited to realize such point-contact junctions. We show an
implementation for the case filling factors $\nu=1$ and $\nu^*\le1$ in which
both the fractional filling $\nu^*$ and the coupling strength can be finely and
independently tuned. A peculiar crossover from insulating to conducting
behavior as $\nu^*$ goes from 1/3 to 1 is observed. These results highlight the
key role played on inter-edge tunneling by local charge depletion at the point
contact.
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You know how Star Trek fans flocked to all the Star Trek movies, even the really bad ones? Why? To see their heroes in action one more time. That's the way I feel about Doc Savage. I am a major fanatic for the character, and the prospect of seeing Doc and his crew in an adventure was overwhelming. And the first 20 minutes of the film only heightened that feeling of anticipation. Then they decided to crib elements from a number of Doc adventures and throw them into this one movie, resulting in a somewhat disjointed film. There's a lot of promise in here, diluted by a number of unfortunate choices (the music, the "camp" elements, etc.) But the spirit of Doc is there, and that's what those of us familiar with Doc and his crew respond to. So, in my long-winded way, what I'm trying to say is that this is not a bad movie: it's just not as good as it should have been. And anyone who is a fan of Superman, James Bond, Indiana Jones, Buckaroo Banzai, and many other characters ought to check this movie out just to become familiar with the hero who provided inspiration for them all.
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We study here the extreme statistics of Brownian particles escaping from a
cusp funnel: the fastest Brownian particles among $n$ follow an ensemble of
optimal trajectories located near the shortest path from the source to the
target. For the time of such first arrivers, we derive an asymptotic formula
that differs from the classical narrow escape and dire strait obtained for the
mean first passage time. Consequently, when particles are initially distributed
at a given distance from a cusp, the fastest do see some properties
characterizing the cusp geometry. Therefore, when many particles diffuse around
impermeable obstacles, the geometry plays a role in the time to reach a target.
In the biological context of cellular transduction with signalling molecules,
having to escape such cusp-like domains slows down fast signaling. To conclude,
generating multiple copies of the same molecule helps bypass a crowded
environment to transmit a molecular signal quickly.
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The selection of the optimal feature subset and the classification has become
an important issue in the field of iris recognition. In this paper we propose
several methods for iris feature subset selection and vector creation. The
deterministic feature sequence is extracted from the iris image by using the
contourlet transform technique. Contourlet transform captures the intrinsic
geometrical structures of iris image. It decomposes the iris image into a set
of directional sub-bands with texture details captured in different
orientations at various scales so for reducing the feature vector dimensions we
use the method for extract only significant bit and information from normalized
iris images. In this method we ignore fragile bits. And finally we use SVM
(Support Vector Machine) classifier for approximating the amount of people
identification in our proposed system. Experimental result show that most
proposed method reduces processing time and increase the classification
accuracy and also the iris feature vector length is much smaller versus the
other methods.
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Electron conductance in planar magnetic tunnel junctions with long-range
barrier disorder is studied within Glauber-eikonal approximation enabling exact
disorder ensemble averaging by means of the Holtsmark-Markov method. This
allows us to address a hitherto unexplored regime of the tunneling
magnetoresistance effect characterized by the crossover from
momentum-conserving to random tunneling as a function of the defect
concentration. We demonstrate that such a crossover results in a reentrant
magnetoresistance: It goes through a pronounced minimum before reaching
disorder- and geometry-independent Julliere's value at high defect
concentrations.
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"When the power surged at my home while I was away I came back to the flashing LED on the front \\\\\THE LAMP WAS OUT!\\\\\"" Well, after calling any and all of the local and not so local TV shops around the best I could do was around $225 for the Lamp and I would have to get it in 2 weeks."""
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Let $G$ be an additive abelian group. Let $A=\{a_{0}, a_{1},\ldots,
a_{k-1}\}$ be a nonempty finite subset of $G$. For a positive integer $h$
satisfying $1\leq h\leq k$, we let
\[h\hat{}_{\underline{+}}A:=\{\Sigma_{i=0}^{k-1}\lambda_{i} a_{i}:
(\lambda_{0},\lambda_{1}, \ldots, \lambda_{k-1}) \in
\{-1,0,1\}^{k},~\Sigma_{i=0}^{k-1}|\lambda_{i}|=h \},\] be the restricted
signed sumset of $A$. The direct problem for the restricted signed sumset
$h\hat{}_{\underline{+}}A$ is to find the minimum number of elements in
$h\hat{}_{\underline{+}}A$ in terms of $|A|$. The inverse problem for
$h\hat{}_{\underline{+}}A$ is to determine the structure of the finite set $A$
for which $|h\hat{}_{\underline{+}}A|$ is minimal. In this article, we solve
some cases of both direct and inverse problems for $h\hat{}_{\underline{+}}A$,
when $A$ is a finite set of integers. In this connection, we also pose some
questions as conjectures in the remaining cases.
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Collimated outflows (jets) are ubiquitous in the universe appearing around
sources as diverse as protostars and extragalactic supermassive blackholes.
Jets are thought to be magnetically collimated, and launched from a magnetized
accretion disk surrounding a compact gravitating object. We have developed the
first laboratory experiments to address time-dependent, episodic phenomena
relevant to the poorly understood jet acceleration and collimation region. The
experimental results show the periodic ejections of magnetic bubbles naturally
evolving into a heterogeneous jet propagating inside a channel made of
self-collimated magnetic cavities. The results provide a unique view of the
possible transition from a relatively steady-state jet launching to the
observed highly structured outflows.
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Don't mind what this socially retarded person above says, this show is hilarious. It shows how a lot of single men are in a bar atmosphere, and also shows that women are not as gullible as men think they are. <br /><br />The contest aspect of the how is really cool and original. Its not the standard reality show that we are all used to now a days.<br /><br />Give it a chance everyone, we are only one episode in, we finally have some Canadian programming that isn't absolute crap. As Canadians what do we normally get, Bon Cop, Bad Cop, or Corner Gas. Come on people show that we are all not as prudish as the previous reviewer.<br /><br />Way to go Comedy Network, giving a new show a chance. The panel is funny and the contestants so far are pretty good.
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Meta-Learning is a subarea of Machine Learning that aims to take advantage of
prior knowledge to learn faster and with fewer data [1]. There are different
scenarios where meta-learning can be applied, and one of the most common is
algorithm recommendation, where previous experience on applying machine
learning algorithms for several datasets can be used to learn which algorithm,
from a set of options, would be more suitable for a new dataset [2]. Perhaps
the most popular form of meta-learning is transfer learning, which consists of
transferring knowledge acquired by a machine learning algorithm in a previous
learning task to increase its performance faster in another and similar task
[3]. Transfer Learning has been widely applied in a variety of complex tasks
such as image classification, machine translation and, speech recognition,
achieving remarkable results [4,5,6,7,8]. Although transfer learning is very
used in traditional or base-learning, it is still unknown if it is useful in a
meta-learning setup. For that purpose, in this paper, we investigate the
effects of transferring knowledge in the meta-level instead of base-level.
Thus, we train a neural network on meta-datasets related to algorithm
recommendation, and then using transfer learning, we reuse the knowledge
learned by the neural network in other similar datasets from the same domain,
to verify how transferable is the acquired meta-knowledge.
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Sums over inverse s-th powers of semiprimes and k-almost primes are
transformed into sums over products of powers of ordinary prime zeta functions.
Multinomial coefficients known from the cycle decomposition of permutation
groups play the role of expansion coefficients. Founded on a known convergence
acceleration for the ordinary prime zeta functions, the sums and first
derivatives are tabulated with high precision for indices k=2,...,6 and integer
powers s=2,...,8.
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A topological group is constructed which is homotopy equivalent to the
pointed loop space of a path-connected Riemannian manifold $M$ and which is
given in terms of "composable small geodesics" on $M$. This model is analogous
to J. Milnor's free group construction \cite{Milnor} which provides a model for
the pointed loop space of a connected simplicial complex. Related function
spaces are constructed from "composable small geodesics" which provide models
for the free loop space of $M$ as well as the space of continuous maps from a
surface to $M$.
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A girl in a pink shirt and blue jeans sitting on a black chair is holding a small object in her right hand above her head and looking at a container with several similar objects in it, while an Asian man in a blue shirt smiles at her while standing in the background.
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In this paper we first formulate a dually gauged harmonic map model,
suggested from a product Abelian Higgs field theory arising in
impurity-inspired field theories, and obtain a new BPS system of equations
governing coexisting vortices and antivortices, which are topologically
characterized by the first Chern class of the underlying Hermitian bundle and
the Thom class of the associated dual bundle. We then establish existence and
uniqueness theorems for such vortices. For the equations over a compact
surface, we obtain necessary and sufficient conditions for the existence of
solutions. For the equations over the full plane, we obtain all finite-energy
solutions. Besides, we also present precise expressions giving the values of
various physical quantities of the solutions, including magnetic charges and
energies, in terms of the total numbers of vortices and antivortices, of two
species, and the coupling parameters involved.
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We show how to infer deterministic cache replacement policies using
off-the-shelf automata learning and program synthesis techniques. For this, we
construct and chain two abstractions that expose the cache replacement policy
of any set in the cache hierarchy as a membership oracle to the learning
algorithm, based on timing measurements on a silicon CPU. Our experiments
demonstrate an advantage in scope and scalability over prior art and uncover 2
previously undocumented cache replacement policies.
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How many senate hearings have you watched? It common to use testimony that is not a part of the senate nor for that matter in a political position.
C. King was also quoted by males I think the day before. Honestly I don't think it was sexism as much as Warren threatens the established well healed money side of Congress. The are Dem and Republicans with big bucks Wall Street backers. Cutting at Warren is like cutting at candidate Trump, both threaten long established congressional power base. It simple, the chairman doesn't like her- I can't read his mind. He did not treat her equally/fairly- I don't like identity politics either. She's an adult and can defend herself, which she did by reading the exact quote out of chambers. PS. I have no doubt Sessions was a product of the South he knew as a child, People can change.
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The model accepted is one where during the Archean Eon the Earths climate was
clement despite the weaker Sun. The observational evidence that supports this
concept is: the emergence of life, the existence of evaporitic sediments and
the presence of terrigenous sediments, all of which require liquid water and
clement conditions. A theoretical argument used to support this idea is the so
called ice-albedo feedback, which states that if the Earth was frozen, it would
still be frozen.The aim of this document is to present an alternative scenario
in which a frozen world, "snowball" style, with liquid water at the bottom of
the sea, also allows for the emergence of life and evaporitic and terrigenous
sedimentation. Archean climatic evidence, available at present, is discussed
and can be reinterpreted to support the idea that, in Archean times, the
surface of the Earth was frozen. Also, a mathematical model is being developed
to demonstrate that the ice-albedo feedback is not an inevitable consequence of
a frozen Archean Eon. Results: Reinterpretation of the evidence shows that life
could appear within the oceanic depths and not necessarily on the surface. The
evaporitic sediments could have formed by saline saturation of the water
enclosed in the limited cavities of liquid water located at the bottom of the
ocean. Also, the terrigenous sediments could have been formed by catastrophic
currents of liquid water due to the fusion of the ice from the sub glacial
volcanoes. From the mathematical model it is deduced that the defrosting moment
of the Earth is towards the end of the Proterozoic, moment in which the
evidence shows the "snowball" Earth ends.
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The analysis of seismic site effects generally disregards the influence of
surface structures on the free field motion in densely urbanized areas. This
paper aims at investigating this particular problem called site-city
interaction especially by comparison to the "free-field" amplification process.
Several evidences (experimental, analytical, numerical) of the site-city
interaction phenomenon have been given in previous work (Gu\'eguen, Bard,
Semblat 2000). The influence of site city-interaction could be large for
structures having eigenfrequencies close to that of the surface soil layers.
Furthermore, the density of structures is also an important governing parameter
of the problem. Considering a specific site (Nice, France) where site-city
interaction is supposed to be significant, we start from detailed experimental
and numerical studies of seismic site effects giving both amplification levels
and occuring frequencies, as well as the location of the maximum amplification
areas. The influence of site-city interaction is then investigated through
various numerical models considering the boundary element method. The effect of
surface structures with variable urban densities is analysed to estimate the
contribution of overall site-city interaction on surface motion distribution.
The main goal of the paper is to estimate the influence of site-city
interaction not only on amplification levels (the influence can be small), but
also on the modification of both main amplification frequencies and location of
the maximum amplification areas. The main conclusion of this work is to show
the modifications of the free-field amplification due to site-city interaction
and leading to a specific urban field amplification.
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The problem that has developed in most major firms is to answer the following:
WHO IS THE BRAND THE FIRM OR THE INDIVIDUAL "PRIMA DONNAS " ?????
Unless the law firms develop a team culture that encourages all members to have a loyalty to the firm and its members this will continue to occur.
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The performance of single image super-resolution has achieved significant
improvement by utilizing deep convolutional neural networks (CNNs). The
features in deep CNN contain different types of information which make
different contributions to image reconstruction. However, most CNN-based models
lack discriminative ability for different types of information and deal with
them equally, which results in the representational capacity of the models
being limited. On the other hand, as the depth of neural networks grows, the
long-term information coming from preceding layers is easy to be weaken or lost
in late layers, which is adverse to super-resolving image. To capture more
informative features and maintain long-term information for image
super-resolution, we propose a channel-wise and spatial feature modulation
(CSFM) network in which a sequence of feature-modulation memory (FMM) modules
is cascaded with a densely connected structure to transform low-resolution
features to high informative features. In each FMM module, we construct a set
of channel-wise and spatial attention residual (CSAR) blocks and stack them in
a chain structure to dynamically modulate multi-level features in a
global-and-local manner. This feature modulation strategy enables the high
contribution information to be enhanced and the redundant information to be
suppressed. Meanwhile, for long-term information persistence, a gated fusion
(GF) node is attached at the end of the FMM module to adaptively fuse
hierarchical features and distill more effective information via the dense skip
connections and the gating mechanism. Extensive quantitative and qualitative
evaluations on benchmark datasets illustrate the superiority of our proposed
method over the state-of-the-art methods.
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Customized deviders
I like the durability of this one. And that you can customize the size you need for different shoes. Has a cover to keep dust out and handles to pull out from under the bed. I did not like that if you ever pick up the box the shoes slide under the deviders
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It is shown that the application of sufficiently strong magnetic field to the
odd-frequency paired Pair Density Wave state described in Phys. Rev. B 94,
165114 (2016) leads to formation of a low temperature metallic state with zero
Hall response. Applications of these ideas to the recent experiments on
stripe-ordered La_{1.875}Ba_{0.125}CuO_4 are discussed.
|
We elaborate on results obtained in \cite{christen2018} for controlling the
numerical posterior error for Bayesian UQ problems, now considering forward
maps arising from the solution of a semilinear evolution partial differential
equation. Results in \cite{christen2018} demand an estimate for the absolute
global error (AGE) of the numeric forward map. Our contribution is a numerical
method for computing the AGE for semilinear evolution PDEs and shows the
potential applicability of \cite{christen2018} in this important wide range
family of PDEs. Numerical examples are given to illustrate the efficiency of
the proposed method, obtaining numerical posterior distributions for unknown
parameters that are nearly identical to the corresponding theoretical
posterior, by keeping their Bayes factor close to 1.
|
If there's one thing I want to distinguish myself from all the other great reviewers here, it's that I am the Queen of Finding Strange Movies in Thrift and Dollar Stores. That said, you can't possibly imagine how happy I was when I found this one. <br /><br />I can even remember that Saturday morning when *every* station simulcast it, so you were stuck if you wanted to watch something else (then again, I guess that was the idea). As a kid, I didn't know if I liked the way all the different characters were stuck together (there are some crossovers that just do *not* work). But I guess the special had it's intended effect. Don't do drugs because you will have nightmares about the Muppets.<br /><br />Now, if you watch this as an adult, on the other hand, you will be treated to the *strangest* anti-drug movie this side of "Reefer Madness". I think I'll just leave it at that before I get into trouble.
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New York Times
THE REPORT: "No evidence" that Clinton asked for or received approval to conduct official government business on a personal email account run through a private server in her New York home. According to top State Department officials interviewed for the investigation, the departments that oversee security "did not - and would not - approve" her use of a personal account because of security concerns.
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Sooo Michael. Yeah.
So Dru Connelly is due to Marry Michael. I don’t even remember his last name that’s how much I don’t like him. Now this dude is just completely off his rocker with how he handled things with Dru. You learn by the end that they were both at fault for a faulty relationship. But Michael just took the cake. And his friends. Mane they were horrible people. I understand being loyal to your friends but be a decent person at least. I mean dang. But enough about that. Because there just isn’t enough time to highlight how messed up that whole situation was. I was glad and a little weary of Dru just hopping on a plane ✈️ to god knew where. But it turned to it to be the best thing for her. Sebastian Bass turned out to be her saving grace. He was both wild and crazy enough to bring out the original Dru and keep her satisfied. And Dru was everything Sebastian needed to come out of his shell and be everything she needed and more.
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DUII usually results in a ticket, followed by release with a court date a couple weeks away for arraignment.
Sometimes a ticket is delayed if the police/prosecutor thinks a more serious charge may be warranted. Like Assault, for example.
In the meantime, someone who has been to the jail, taken the breathalyzer, fingerprinted, and had their mug shot taken is not usually kept in jail from December 18, 2016 until January 4, 2017.
In Eugene, those accused of felonies aren't likely to be in pre-trial custody that long! At least not until they have three or four prior convictions.
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A search for excited neutrinos is performed using the full $e^{-}p$ data
sample collected by the H1 experiment at HERA at a centre-of-mass energy of 319
GeV, corresponding to a total luminosity of 184 pb$^{-1}$.The electroweak
decays of excited neutrinos ${\nu}^{*}{\to}{\nu}{\gamma}$,
${\nu}^{*}{\to}{\nu}Z$ and ${\nu}^{*}{\to}eW$ with subsequent hadronic or
leptonic decays of the $W$ and $Z$ bosons are considered. No evidence for
excited neutrino production is found. Mass dependent exclusion limits on
$\nu^*$ production cross sections and on the ratio of the coupling to the
compositeness scale $f/{\Lambda}$ are derived within gauge mediated models. A
limit on $f/{\Lambda}$, independent of the relative couplings to the SU(2) and
U(1) gauge bosons, is also determined. These limits extend the excluded region
to higher masses than has been possible in previous excited neutrino searches.
|
This is a funny, intelligent and, in a sense, realistic comedy about a 14-year-old trying to live her first love while on vacation, and also about the complex, sometimes amusing, sometimes touching, relation between a divorced father and her growing daughter... and about how far a women (not only Nicole, the teen-ager) can go to get the man she loves! I laughed a lot with this lively scenario that never drags.
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We report on the criterion for the dynamic transformation of the internal
structure of moving domain walls (DWs) in soft magnetic thin-film nanostripes
above the Walker threshold field, Hw. In order for the process of
transformation from transverse wall (TW) to vortex wall (VW) or antivortex wall
(AVW) occurs, the edge-soliton core of the TW-type DW should grow sufficiently
to the full width at half maximum of the out-of-plane magnetizations of the
core area of the stabilized vortex (or antivortex) by moving inward along the
transverse (width) direction. Upon completion of the nucleation of the vortex
(antivortex) core, the VW (AVW) is stabilized, and then its core accompanies
the gyrotropic motion in a potential well (hill) of a given nanostripe. Field
strengths exceeding the Hw, which is the onset field of DW velocity breakdown,
are not sufficient but necessary conditions for dynamic DW transformation.
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Let $ \{P_{n}\}_{n\geq 0} $ be the sequence of Padovan numbers defined by $
P_0=0 $, $ P_1 =1=P_2$ and $ P_{n+3}= P_{n+1} +P_n$ for all $ n\geq 0 $. In
this paper, we find all repdigits in base $ 10 $ which can be written as a sum
of three Padovan numbers.
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I've been an active volunteer for a non profit and can say that it simply could not function without some full time staff. At an absolute minimum you need someone to answer the phone, coordinate the volunteers, order supplies and pay the bills. If you are building houses this is like being a general contractor. You can see the 990 for this branch of Habitat for Humanity at Charity Navigator. The highest paid employee is listed on these forms. That person make a little over $60,000 a year.
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We consider the two-dimensional simple random walk conditioned on never
hitting the origin, which is,formally speaking, the Doob's $h$-transform of the
simple random walk with respect to the potential kernel. We then study the
behavior of the future minimum distance of the walk to the origin, and also
prove that two independent copies of the conditioned walk, although both
transient, will nevertheless meet infinitely many times a.s.
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We provide a general framework for characterizing the trade-off between
accuracy and robustness in supervised learning. We propose a method and define
quantities to characterize the trade-off between accuracy and robustness for a
given architecture, and provide theoretical insight into the trade-off.
Specifically we introduce a simple trade-off curve, define and study an
influence function that captures the sensitivity, under adversarial attack, of
the optima of a given loss function. We further show how adversarial training
regularizes the parameters in an over-parameterized linear model, recovering
the LASSO and ridge regression as special cases, which also allows us to
theoretically analyze the behavior of the trade-off curve. In experiments, we
demonstrate the corresponding trade-off curves of neural networks and how they
vary with respect to factors such as number of layers, neurons, and across
different network structures. Such information provides a useful guideline to
architecture selection.
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I managed to sneak away one night and go to the movie theater to see this one, thinking I was in for a treat. Boy, was I wrong. Considering the talent involved, this has to be one of the worst movies I've ever seen. Everyone in it was miscast, and I find it incredible to read on this site that there are people out there who actually liked it.
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