title:
Gravitational Radiation from Post-Newtonian Sources and Inspiralling
  Compact Binaries

abstract:
  To be observed and analyzed by the network of gravitational wave detectors on
ground (LIGO, VIRGO, etc.) and by the future detectors in space (LISA, etc.),
inspiralling compact binaries --- binary star systems composed of neutron stars
and/or black holes in their late stage of evolution --- require high-accuracy
templates predicted by general relativity theory. The gravitational waves
emitted by these very relativistic systems can be accurately modelled using a
high-order post-Newtonian gravitational wave generation formalism. In this
article, we present the current state of the art on post-Newtonian methods as
applied to the dynamics and gravitational radiation of general matter sources
(including the radiation reaction back onto the source) and inspiralling
compact binaries. We describe the post-Newtonian equations of motion, in
Lagrangian and Hamiltonian formalisms, pay attention to the self-field
regularizations at work, discuss several notions of innermost circular orbits
and make comparisons with numerical gravitational self-force computations. The
gravitational waveform and energy flux are obtained with high post-Newtonian
precision. Some landmark results are discussed in the case of eccentric compact
binaries moving on quasi-elliptical orbits, and on spin-orbit coupling effects
in black hole binaries.


title: On Braided Linear Gr-categories

abstract:
  We provide explicit and unified formulae for the normalized 3-cocycles on
arbitrary finite abelian groups. As an application, we compute all the braided
monoidal structures on linear Gr-categories.


title:
Multi-channel Wireless Networks with Infrastructure Support: Capacity
  and Delay

abstract:
  In this paper, we propose a novel multi-channel network with infrastructure
support, called an \textit{MC-IS} network, which has not been studied in the
literature. To the best of our knowledge, we are the first to study such an
\textit{MC-IS} network. Our \textit{MC-IS} network is equipped with a number of
infrastructure nodes which can communicate with common nodes using a number of
channels where a communication between a common node and an infrastructure node
is called an infrastructure communication and a communication between two
common nodes is called an ad-hoc communication. Our proposed \textit{MC-IS}
network has a number of advantages over three existing conventional networks,
namely a single-channel wireless ad hoc network (called an \textit{SC-AH}
network), a multi-channel wireless ad hoc network (called an \textit{MC-AH}
network) and a single-channel network with infrastructure support (called an
\textit{SC-IS} network). In particular, the \textit{network capacity} of our
proposed \textit{MC-IS} network is $\sqrt{n \log n}$ times higher than that of
an \textit{SC-AH} network and an \textit{MC-AH} network and the same as that of
an \textit{SC-IS} network, where $n$ is the number of nodes in the network. The
\textit{average delay} of our \textit{MC-IS} network is $\sqrt{\log n/n}$ times
lower than that of an \textit{SC-AH} network and an \textit{MC-AH} network, and
$\min(C_I,m)$ times lower than the average delay of an \textit{SC-IS} network,
where $C_I$ and $m$ denote the number of channels dedicated for infrastructure
communications and the number of interfaces mounted at each infrastructure
node, respectively.


title:
DeCAF: A Deep Convolutional Activation Feature for Generic Visual
  Recognition

abstract:
  We evaluate whether features extracted from the activation of a deep
convolutional network trained in a fully supervised fashion on a large, fixed
set of object recognition tasks can be re-purposed to novel generic tasks. Our
generic tasks may differ significantly from the originally trained tasks and
there may be insufficient labeled or unlabeled data to conventionally train or
adapt a deep architecture to the new tasks. We investigate and visualize the
semantic clustering of deep convolutional features with respect to a variety of
such tasks, including scene recognition, domain adaptation, and fine-grained
recognition challenges. We compare the efficacy of relying on various network
levels to define a fixed feature, and report novel results that significantly
outperform the state-of-the-art on several important vision challenges. We are
releasing DeCAF, an open-source implementation of these deep convolutional
activation features, along with all associated network parameters to enable
vision researchers to be able to conduct experimentation with deep
representations across a range of visual concept learning paradigms.


title: Equation of State of Dark Matter after Planck Data

abstract:
  In this paper, we loosen the zero equation of state of dark matter to a
constant $w_{dm}$. By using the currently available cosmic observations which
include the type-Ia supernovae, the baryon acoustic oscillation, the WiggleZ
measurements of matter power spectrum and the cosmic microwave background
radiation from the firs release of {\it Planck} dat through the Markov chain
Monte Carlo method, we found the equation of state of dark matter in $3\sigma$
regions:
$w_{dm}=0.000707_{-0.000747-0.00149-0.00196}^{+0.000746+0.00146+0.00193}$. The
difference of the minimum $\chi^2$ between the $\Lambda$CDM and $\Lambda$wDM
models is $\Delta\chi^2_{min}=0.446$ for one extra model parameter $w_{dm}$.
Although the currently available cosmic observations favor the $\Lambda$wDM
mildly, no significant deviation from the $\Lambda$CDM model is found in
$1\sigma$ regions.


title:
CAM: Causal additive models, high-dimensional order search and penalized
  regression

abstract:
  We develop estimation for potentially high-dimensional additive structural
equation models. A key component of our approach is to decouple order search
among the variables from feature or edge selection in a directed acyclic graph
encoding the causal structure. We show that the former can be done with
nonregularized (restricted) maximum likelihood estimation while the latter can
be efficiently addressed using sparse regression techniques. Thus, we
substantially simplify the problem of structure search and estimation for an
important class of causal models. We establish consistency of the (restricted)
maximum likelihood estimator for low- and high-dimensional scenarios, and we
also allow for misspecification of the error distribution. Furthermore, we
develop an efficient computational algorithm which can deal with many
variables, and the new method's accuracy and performance is illustrated on
simulated and real data.


title:
Spin-directed network model for the surface states of weak
  three-dimensional $\mathbb{Z}^{\,}_{2}$ topological insulators

abstract:
  A two-dimensional spin-directed $\mathbb{Z}^{\,}_{2}$ network model is
constructed that describes the combined effects of dimerization and disorder
for the surface states of a weak three-dimensional $\mathbb{Z}^{\,}_{2}$
topological insulator. The network model consists of helical edge states of
two-dimensional layers of $\mathbb{Z}^{\,}_{2}$ topological insulators which
are coupled by time-reversal symmetric interlayer tunneling. It is argued that,
without dimerization of interlayer couplings, the network model has no
insulating phase for any disorder strength. However, a sufficiently strong
dimerization induces a transition from a metallic phase to an insulating phase.
The critical exponent $\nu$ for the diverging localization length at
metal-insulator transition points is obtained by finite-size scaling analysis
of numerical data from simulations of this network model. It is shown that the
phase transition belongs to the two-dimensional symplectic universality class
of Anderson transition.


title: Legendrian torus knots in S^1\times S^2

abstract:
  We classify the Legendrian torus knots in S^1\times S^2 with its standard
tight contact structure up to Legendrian isotopy.


title: An information spectrum approach to the capacity region of GIFC

abstract:
  In this paper, we present a general formula for the capacity region of a
general interference channel with two pairs of users. The formula shows that
the capacity region is the union of a family of rectangles, where each
rectangle is determined by a pair of spectral inf-mutual information rates.
Although the presented formula is usually difficult to compute, it provides us
useful insights into the interference channels. In particular, when the inputs
are discrete ergodic Markov processes and the channel is stationary memoryless,
the formula can be evaluated by BCJR algorithm. Also the formula suggests us
that the simplest inner bounds (obtained by treating the interference as noise)
could be improved by taking into account the structure of the interference
processes. This is verified numerically by computing the mutual information
rates for Gaussian interference channels with embedded convolutional codes.
Moreover, we present a coding scheme to approach the theoretical achievable
rate pairs. Numerical results show that decoding gain can be achieved by
considering the structure of the interference.


title:
SIMD Parallel MCMC Sampling with Applications for Big-Data Bayesian
  Analytics

abstract:
  Computational intensity and sequential nature of estimation techniques for
Bayesian methods in statistics and machine learning, combined with their
increasing applications for big data analytics, necessitate both the
identification of potential opportunities to parallelize techniques such as
MCMC sampling, and the development of general strategies for mapping such
parallel algorithms to modern CPUs in order to elicit the performance up the
compute-based and/or memory-based hardware limits. Two opportunities for
Single-Instruction Multiple-Data (SIMD) parallelization of MCMC sampling for
probabilistic graphical models are presented. In exchangeable models with many
observations such as Bayesian Generalized Linear Models, child-node
contributions to the conditional posterior of each node can be calculated
concurrently. In undirected graphs with discrete nodes, concurrent sampling of
conditionally-independent nodes can be transformed into a SIMD form.
High-performance libraries with multi-threading and vectorization capabilities
can be readily applied to such SIMD opportunities to gain decent speedup, while
a series of high-level source-code and runtime modifications provide further
performance boost by reducing parallelization overhead and increasing data
locality for NUMA architectures. For big-data Bayesian GLM graphs, the
end-result is a routine for evaluating the conditional posterior and its
gradient vector that is 5 times faster than a naive implementation using
(built-in) multi-threaded Intel MKL BLAS, and reaches within the striking
distance of the memory-bandwidth-induced hardware limit. The proposed
optimization strategies improve the scaling of performance with number of cores
and width of vector units (applicable to many-core SIMD processors such as
Intel Xeon Phi and GPUs), resulting in cost-effectiveness, energy efficiency,
and higher speed on multi-core x86 processors.


title: Intersection Information based on Common Randomness

abstract:
  The introduction of the partial information decomposition generated a flurry
of proposals for defining an intersection information that quantifies how much
of "the same information" two or more random variables specify about a target
random variable. As of yet, none is wholly satisfactory. A palatable measure of
intersection information would provide a principled way to quantify slippery
concepts, such as synergy. Here, we introduce an intersection information
measure based on the G\'acs-K\"orner common random variable that is the first
to satisfy the coveted target monotonicity property. Our measure is imperfect,
too, and we suggest directions for improvement.


title:
Conic structure of the non-negative operator convex functions on
  $(0,\infty)$

abstract:
  The conic structure of the convex cone of non-negative operator convex
functions on $(0,\infty)$ (also on $(-1,1)$) is clarified. We completely
determine the extreme rays, the closed faces, and the simplicial closed faces
of this convex cone.


title:
Three-Way Dissection of a Game-CAPTCHA: Automated Attacks, Relay
  Attacks, and Usability

abstract:
  Existing captcha solutions on the Internet are a major source of user
frustration. Game captchas are an interesting and, to date, little-studied
approach claiming to make captcha solving a fun activity for the users. One
broad form of such captchas -- called Dynamic Cognitive Game (DCG) captchas --
challenge the user to perform a game-like cognitive task interacting with a
series of dynamic images. We pursue a comprehensive analysis of a
representative category of DCG captchas. We formalize, design and implement
such captchas, and dissect them across: (1) fully automated attacks, (2)
human-solver relay attacks, and (3) usability. Our results suggest that the
studied DCG captchas exhibit high usability and, unlike other known captchas,
offer some resistance to relay attacks, but they are also vulnerable to our
novel dictionary-based automated attack.


title:
Macroscale, slowly varying, models emerge from the microscale dynamics
  in long thin domains

abstract:
  Many practical approximations in physics and engineering invoke a relatively
long physical domain with a relatively thin cross-section. In this scenario we
typically expect the system to have structures that vary slowly in the long
dimension. Extant mathematical approximation methodologies are typically
self-consistency or limit arguments as the aspect ratio becomes unphysically
infinite. The proposed new approach is to analyse the dynamics based at each
cross-section in a rigorous Taylor polynomial. Then centre manifold theory
supports the local modelling of the system's dynamics with coupling to
neighbouring locales treated as a non-autonomous forcing. The union over all
cross-sections then provides powerful new support for the existence and
emergence of a centre manifold model global in the long domain, albeit finite
sized. Our resolution of the coupling between neighbouring locales leads to
novel quantitative estimates of the error induced by long slow space
variations. Four examples help develop and illustrate the approach and results.
The approach developed here may be used to quantify the accuracy of known
approximations, to extend such approximations to mixed order modelling, and to
open previously intractable modelling issues to new tools and insights.


title: Compressive force generation by a bundle of living biofilaments

abstract:
  To study the compressional forces exerted by a bundle of living stiff
filaments pressing on a surface, akin to the case of an actin bundle in
filopodia structures, we have performed particulate Molecular Dynamics
simulations of a grafted bundle of parallel living (self-assembling) filaments,
in chemical equilibrium with a solution of their constitutive monomers.
Equilibrium is established as these filaments, grafted at one end to a wall of
the simulation box, grow at their chemically active free end and encounter the
opposite confining wall of the simulation box. Further growth of filaments
requires bending and thus energy, which automatically limit the populations of
longer filaments. The resulting filament sizes distribution and the force
exerted by the bundle on the obstacle are analyzed for different grafting
densities and different sub- or supercritical conditions, these properties
being compared with the predictions of the corresponding ideal confined bundle
model. In this analysis, non-ideal effects due to interactions between
filaments and confinement effects are singled out. For all state points
considered at the same temperature and at the same gap width between the two
surfaces, the force per filament exerted on the opposite wall appears to be a
function of a rescaled free monomer density $\hat{\rho}_1^{\rm eff}$. This
quantity can be estimated directly from the characteristic length of the
exponential filament size distribution $P$ observed in the size domain where
these grafted filaments are not in direct contact with the wall. We also
analyze the dynamics of the filament contour length fluctuations in terms of
effective polymerization ($U$) and depolymerization ($W$) rates, where again it
is possible to disentangle non-ideal and confinement effects.


title: Weierstrass semigroups on double covers of genus four curve

abstract:
  Let C be a complete non-singular irreducible curve of genus 4 over an
algebraically closed field of characteristic 0. We determine all possible
Weierstrass semigroups of ramification points on double covers of C which have
genus greater than 11. Moreover, we construct double covers with ramification
points whose Weierstrass semigroups are the possible ones.


title:
Explicit formulas for the twisted Koecher-Maass series of the
  Duke-Imamoglu-Ikeda lift and their applications

abstract:
  We give an explicit formula for the twisted Koecher-Maass series of the
Duke-Imamoglu-Ikeda lift. As an application we prove a certain algebraicity
result for the values of twisted Rankin-Selberg series at integers of
half-integral weight modular forms, which was not treated by Shimura.


title:
Learning Hidden Structures with Relational Models by Adequately
  Involving Rich Information in A Network

abstract:
  Effectively modelling hidden structures in a network is very practical but
theoretically challenging. Existing relational models only involve very limited
information, namely the binary directional link data, embedded in a network to
learn hidden networking structures. There is other rich and meaningful
information (e.g., various attributes of entities and more granular information
than binary elements such as "like" or "dislike") missed, which play a critical
role in forming and understanding relations in a network. In this work, we
propose an informative relational model (InfRM) framework to adequately involve
rich information and its granularity in a network, including metadata
information about each entity and various forms of link data. Firstly, an
effective metadata information incorporation method is employed on the prior
information from relational models MMSB and LFRM. This is to encourage the
entities with similar metadata information to have similar hidden structures.
Secondly, we propose various solutions to cater for alternative forms of link
data. Substantial efforts have been made towards modelling appropriateness and
efficiency, for example, using conjugate priors. We evaluate our framework and
its inference algorithms in different datasets, which shows the generality and
effectiveness of our models in capturing implicit structures in networks.


title:
Machine learning with systematic density-functional theory calculations:
  Application to melting temperatures of single and binary component solids

abstract:
  A combination of systematic density functional theory (DFT) calculations and
machine learning techniques has a wide range of potential applications. This
study presents an application of the combination of systematic DFT calculations
and regression techniques to the prediction of the melting temperature for
single and binary compounds. Here we adopt the ordinary least-squares
regression (OLSR), partial least-squares regression (PLSR), support vector
regression (SVR) and Gaussian process regression (GPR). Among the four kinds of
regression techniques, the SVR provides the best prediction. In addition, the
inclusion of physical properties computed by the DFT calculation to a set of
predictor variables makes the prediction better. Finally, a simulation to find
the highest melting temperature toward the efficient materials design using
kriging is demonstrated. The kriging design finds the compound with the highest
melting temperature much faster than random designs. This result may stimulate
the application of kriging to efficient materials design for a broad range of
applications.


title:
Three-body force effect on the properties of nuclear matter under the
  gap and continuous choices within the BHF approach

abstract:
  We have calculated and compared the three-body force effects on the
properties of nuclear matter under the gap and continuous choices for the
self-consistent auxiliary potential within the Brueckner-Hartree-Fock approach
by adopting the Argonne $V18$ and the Bonn B two-body potentials plus a
microscopic three-body force (TBF). The TBF provides a strong repulsive effect
on the equation of state of nuclear matter at high densities for both the gap
and continuous choices. The saturation point turns out to be much closer to the
empirical value when the continuous choice is adopted. In addition, the
dependence of the calculated symmetry energy upon the choice of the
self-consistent auxiliary potential is discussed.


title:
Sub-Ohmic spin-boson model with off-diagonal coupling: Ground state
  properties

abstract:
  We have carried out analytical and numerical studies of the spin-boson model
in the sub-ohmic regime with the influence of both the diagonal and
off-diagonal coupling accounted for via the Davydov D1 variational ansatz.
While a second-order phase transition is known to be exhibited by this model in
the presence of diagonal coupling only, we demonstrate the emergence of a
discontinuous first order phase transition upon incorporation of the
off-diagonal coupling. A plot of the ground state energy versus magnetization
highlights the discontinuous nature of the transition between the isotropic
(zero magnetization) state and nematic (finite magnetization) phases. We have
also calculated the entanglement entropy and a discontinuity found at a
critical coupling strength further supports the discontinuous crossover in the
spin-boson model in the presence of off-diagonal coupling. It is further
revealed via a canonical transformation approach that for the special case of
identical exponents for the spectral densities of the diagonal and the
off-diagonal coupling, there exists a continuous crossover from a single
localized phase to doubly degenerate localized phase with differing
magnetizations.


title: On Lower bounds for variance and moments of unimodal distributions

abstract:
  We provide an elementary proof of the lower bound for the variance of
continuous unimodal distributions and obtain analogous bounds for the higher
order central moments. A lower bound for the rth central moment of discrete
distribution is given and compared favorably with a related bound for discrete
unimodal distribution in literature.


title:
Highly Efficient and Electrically Robust Carbon Irradiated SI-GaAs Based
  Photoconductive THz Emitters

abstract:
  We demonstrate here an efficient THz source with low electrical power
consumption. We have increased the maximum THz radiation power emitted from
SI-GaAs based photoconductive emitters by two orders of magnitude. By
irradiating the SI-GaAs substrate with Carbon-ions up to 2 micron deep, we have
created lot of defects and decreased the life time of photo-excited carriers
inside the substrate. Depending on the irradiation dose we find 1 to 2 orders
of magnitude decrease in total current flowing in the substrate, resulting in
subsequent decrease of heat dissipation in the antenna. This has resulted in
increasing maximum cut-off of the applied voltage across Photo-Conductive
Emitter (PCE) electrodes to operate the device without thermal breakdown from
~35 V to > 150 V for the 25 micron electrode gaps. At optimum operating
conditions, carbon irradiated (10^14 ions/cm^2) PCEs give THz pulses with power
about 100 times higher in comparison to the usual PCEs on SI-GaAs and
electrical to THz power conversion efficiency has improved by a factor of ~
800.


title: Optical Disk with Blu-Ray Technology

abstract:
  Blu-ray is the name of a next-generation optical disc format jointly
developed by the Blu-ray Disc Association a group of the world's leading
consumer electronics, personal computer and media manufacturers. The format was
developed to enable recording, rewriting and playback of high-definition video,
as well as storing large amounts of data. This extra capacity combined with the
use of advanced video and audio codec will offer consumers an unprecedented HD
experience. While current optical disc technologies such as DVD and DVDRAM rely
on a red laser to read and write data, the new format uses a blue-violet laser
instead, hence the name Blu-ray. Blu ray also promises some added security,
making ways for copyright protections. Blu-ray discs can have a unique ID
written on them to have copyright protection inside the recorded streams. Blu
.ray disc takes the DVD technology one step further, just by using a laser with
a nice color.


title: Cache Discovery Policies of MANET

abstract:
  In situations where establishing a network infrastructure is impossible,
Ad-hoc networks are considered particularly important. Most of the previous
research in Ad-hoc networks concentrated on the development and enhancement of
dynamic routing protocols, which could efficiently discover routes between two
communicating nodes. Although routing strategies is an important topic in
MANETs, other topics such as data access are also crucial since the final goal
of using Ad-hoc networks is to provide data access to mobile nodes. One of the
most attractive techniques used to improve the data access performance in MANET
environment is cooperative caching; which means multiple caching nodes share
and cooperatively manage the cached contents. It is lead the research to
important questions, what data should be cached, where, when, and how? A
cooperative caching addressed into two basic issues: cache discovery and cache
management, in other words, how to find requested data efficiently and how to
manage an individual cache to improve the overall capacity of a cooperated
cache. In this paper we have made a review of the existing cache discovery
algorithms to address four stages after application request and before server
response, using an historical file to record the previous data requests, and
proposed cluster architecture with data cluster head election to store
efficient information for future use and reducing the cost of flooding. In
addition, this paper suggests some alternative techniques for cache discovery.
Finally, the paper concludes with a discussion on future research directions.


title:
A Workflow-Forecast Approach To The Task Scheduling Problem In
  Distributed Computing Systems

abstract:
  The aim of this paper is to provide a description of deep-learning-based
scheduling approach for academic-purpose high-performance computing systems.
The share of academic-purpose distributed computing systems (DCS) reaches 17.4
percents amongst TOP500 supercomputer sites (15.6 percents in performance
scale) that makes them a valuable object of research. The core of this approach
is to predict the future workflow of the system depending on the previously
submitted tasks using deep learning algorithm. Information on predicted tasks
is used by the resource management system (RMS) to perform efficient schedule.


title:
PRISM (Polarized Radiation Imaging and Spectroscopy Mission): An
  Extended White Paper

abstract:
  PRISM (Polarized Radiation Imaging and Spectroscopy Mission) was proposed to
ESA in May 2013 as a large-class mission for investigating within the framework
of the ESA Cosmic Vision program a set of important scientific questions that
require high resolution, high sensitivity, full-sky observations of the sky
emission at wavelengths ranging from millimeter-wave to the far-infrared.
PRISM's main objective is to explore the distant universe, probing cosmic
history from very early times until now as well as the structures, distribution
of matter, and velocity flows throughout our Hubble volume. PRISM will survey
the full sky in a large number of frequency bands in both intensity and
polarization and will measure the absolute spectrum of sky emission more than
three orders of magnitude better than COBE FIRAS. The aim of this Extended
White Paper is to provide a more detailed overview of the highlights of the new
science that will be made possible by PRISM


title: Compactly supported Hamiltonian loops with non zero Calabi invariant

abstract:
  We give examples of compactly supported Hamiltonian loops with non zero
Calabi invariant on certain open symplectic manifolds.


title:
Entanglement entropy of low-lying excitation in localized interacting
  system: Signature of Fock space delocalization

abstract:
  The properties of the entanglement entropy (EE) of low-lying excitations in
one-dimensional disordered interacting systems are studied. The ground state EE
shows a clear signature of localization, while low-lying excitation shows a
crossover from metallic behavior at short sample sizes to localized at longer
length. The dependence of the crossover as function of interaction strength and
sample length is studied using the density matrix renormalization group (DMRG).
This behavior corresponds to the presence of the predicted many particle
critical energy in the vicinity of the Fermi energy. Implications of these
results to experiments are discussed.


title:
Algebras whose Coxeter polynomials are products of cyclotomic
  polynomials

abstract:
  Let A be a finite dimensional algebra over an algebraically closed field k.
Assume A is basic connected with n pairwise non-isomorphic simplemodules. We
consider the Coxeter transformation ?A as the automorphism of the Grothendieck
group K0(A) induced by the Auslander-Reiten translation ? in the derived
category Der(modA) of the module category modA of finite dimensional left
A-modules. We say that A is an algebra of cyclotomic type if the characteristic
polynomial ?A of ?A is a product of cyclotomic polynomials. There are many
examples of algebras of cyclotomic type in the representaton theory literature:
hereditary algebras of Dynkin and extended Dynkin types, canonical algebras,
some supercanonical and extended canonical algebras. Among other results, we
show that: (a) algebras satisfying the fractional Calabi-Yau property have
periodic Coxeter transformation and are, therefore, of cyclotomic type, and (b)
algebras whose homological form hA is non-negative are of cyclotomic type. For
an algebra A of cyclotomic type we describe the shape of the Auslander-Reiten
components of Der(modA). 1.


title: Charge-Confining Gravitational Electrovacuum Shock Wave

abstract:
  In previous publications we have extensively studied spherically symmetric
solutions of gravity coupled to a non-standard type of non-linear
electrodynamics containing a square root of the ordinary Maxwell Lagrangian
(the latter is known to yield QCD-like confinement in flat space-time). A class
of these solutions describe non-standard black holes of
Reissner-Nordstroem-(anti-)-de-Sitter type with an additional constant radial
vacuum electric field, in particular, a non-asymptotically flat
Reissner-Nordstroem-type black hole. Here we study the ultra-relativistic boost
(Aichelburg-Sexl-type) limit of the latter and show that, unlike the ordinary
Reissner-Nordstroem case, we obtain a gravitational electrovacuum shock wave as
a result of the persistence of the gauge field due to the "square-root" Maxwell
Lagrangian term. Next, we show that this gravitational electrovacuum shock wave
confines charged test particles (both massive and massless) within a finite
distance from its front.


title:
Multi-wavelength study of 14000 star-forming galaxies from the Sloan
  Digital Sky Survey

abstract:
  (abridged) We studied a large sample of ~14000 dwarf star-forming galaxies
with strong emission lines selected from the Sloan Digital Sky Survey (SDSS)
and distributed in the redshift range of z~0-0.6. We modelled spectral energy
distributions (SED) of all galaxies which were based on the SDSS spectra in the
visible range of 0.38-0.92 micron and included both the stellar and ionised gas
emission. These SEDs were extrapolated to the UV and mid-infrared ranges to
cover the wavelength range of 0.1-22 micron. The SDSS spectroscopic data were
supplemented by photometric data from the GALEX, SDSS, 2MASS, WISE, IRAS, and
NVSS all-sky surveys. We derived global characteristics of the galaxies, such
as their element abundances, luminosities, and stellar masses. The luminosities
and stellar masses range within the sample over ~5 orders of magnitude, thereby
linking low-mass and low-luminosity blue compact dwarf (BCD) galaxies to
luminous galaxies, which are similar to high-redshift Lyman-break galaxies
(LBGs). The luminosity L(Hbeta) of the Hbeta emission line, a characteristic of
the youngest stellar population with an age of a few Myr, is correlated with
luminosities in other wavelength ranges. This implies that the most recent
burst of star formation makes a significant contribution to the emission in the
visible range and dominates in other wavelength ranges. We found 20 galaxies
with very red WISE mid-infrared m(3.4micron)-m(4.6micron) colour (>2 mag),
which suggests the important contribution of the hot (with a temperature of
several hundred degree) dust emission in these galaxies. Our analysis of the
balance between the luminosity in the WISE bands that covered a wavelength
range of 3.4-22 micron and the luminosity of the emission absorbed at shorter
wavelengths showed that the luminosity of the hot dust emission is increased
with increasing L(Hbeta) and EW(Hbeta).


title: Shapes of polyhedra, mixed volumes, and hyperbolic geometry

abstract:
  We are generalizing to higher dimensions the Bavard-Ghys construction of the
hyperbolic metric on the space of polygons with fixed directions of edges.
  The space of convex d-dimensional polyhedra with fixed directions of facet
normals has a decomposition into type cones that correspond to different
combinatorial types of polyhedra. This decomposition is a subfan of the
secondary fan of a vector configuration and can be analyzed with the help of
Gale diagrams.
  We construct a family of quadratic forms on each of the type cones using the
theory of mixed volumes. The Alexandrov-Fenchel inequalities ensure that these
forms have exactly one positive eigenvalue. This introduces a piecewise
hyperbolic structure on the space of similarity classes of polyhedra with fixed
directions of facet normals. We show that some of the dihedral angles on the
boundary of the resulting cone-manifold are equal to \pi/2.


title: Conjugacy class conditions in locally compact second countable groups

abstract:
  Many non-locally compact second countable groups admit a comeagre conjugacy
class. For example, this is the case for the automorphism group of the rational
order and the automorphism group of the random graph [Truss]. A. Kechris and C.
Rosendal ask if a non-trivial locally compact second countable group can admit
a comeagre conjugacy class. We answer the question in the negative via an
analysis of locally compact second countable groups with topological conditions
on a conjugacy class.


title: Dependence Measure for non-additive model

abstract:
  We proposed a new statistical dependency measure called Copula Dependency
Coefficient(CDC) for two sets of variables based on copula. It is robust to
outliers, easy to implement, powerful and appropriate to high-dimensional
variables. These properties are important in many applications. Experimental
results show that CDC can detect the dependence between variables in both
additive and non-additive models.


title: A Support Based Algorithm for Optimization with Eigenvalue Constraints

abstract:
  Optimization of convex functions subject to eigenvalue constraints is
intriguing because of peculiar analytical properties of eigenvalues, and is of
practical interest because of wide range of applications in fields such as
structural design and control theory. Here we focus on the optimization of a
linear objective subject to a constraint on the smallest eigenvalue of an
analytical and Hermitian matrix-valued function. We offer a quadratic support
function based numerical solution. The quadratic support functions are derived
utilizing the variational properties of an eigenvalue over a set of Hermitian
matrices. Then we establish the local convergence of the algorithm under mild
assumptions, and deduce a precise rate of convergence result by viewing the
algorithm as a fixed point iteration. We illustrate its applicability in
practice on the pseudospectral functions.


title:
Next-to-leading order electroweak corrections to pp -> W+W- -> 4 leptons
  at the LHC in double-pole approximation

abstract:
  We present the calculation of next-to-leading-order electroweak corrections
to W-boson pair production at the LHC, taking off-shell effects of the W bosons
and their leptonic decays into account in the framework of the so-called
double-pole approximation. In detail, the lowest-order cross section and the
photonic bremsstrahlung are based on full matrix elements with four-fermion
final states, but the virtual one-loop corrections are approximated by the
leading contributions of a systematic expansion about the resonance poles of
the two W bosons. This expansion classifies the virtual corrections into
factorizable and non-factorizable corrections, the calculation of which is
described in detail. Corrections induced by photons in the initial state, i.e.
photon-photon and quark-photon collision channels, are included and based on
complete matrix elements as well. Our numerical results, which are presented
for realistic acceptance cuts applied to the W-boson decay products,
qualitatively confirm recent results obtained for on-shell W bosons and reveal
electroweak corrections of the size of tens of percent in the TeV range of
transverse momenta and invariant masses. In general, photon-photon and
quark-photon induced contributions amount to 5-10% of the full differential
result. Compared to previous predictions based on stable W bosons electroweak
corrections, however, can change by several percent because of realistic cuts
on the W-boson decay products and corrections to the decays.


title:
The MAGIC telescopes DAQ software and the on-the-fly online analysis
  client

abstract:
  In this contribution we describe the design of the Data AcQuisition (DAQ) and
online analysis software of the MAGIC telescopes after the 2012 upgrade.
Although the final stereo trigger requires coincidence between the two
telescopes, the actual data acquisition is performed independently, producing
two separate data streams. Events are first readout and built from the
front-end electronics and then stored in the DAQs' internal ring buffer for
further processing: pre-calibration and signal extraction. The pixel signals,
previously used only for data quality monitoring, are now also sent
"on-the-fly" to the centralized online analysis program MOLA, which acts as a
single client for the two DAQ data streams, and uses this information to
provide preliminary high level analysis results. The integrated DAQ and online
analysis programs allows an immediate feedback in case of a rapid gamma-ray
flare of the pointed astrophysical source.


title:
Exchangeable stochastic processes and symmetric states in quantum
  probability

abstract:
  We analyze general aspects of exchangeable quantum stochastic processes, as
well as some concrete cases relevant for several applications to Quantum
Physics and Probability. We establish that there is a one-to-one correspondence
between quantum stochastic processes, either preserving or not the identity,
and states on free product C*-algebras, unital or not unital respectively,
where the exchangeable ones correspond precisely to the symmetric states. We
also connect some algebraic properties of exchangeable processes, that is the
fact that they satisfy the product state or the block-singleton conditions, to
some natural ergodic ones. We then specialize the investigation for the
q-deformed Commutation Relations, q in(-1,1) (the case q=0 corresponding to the
reduced group C*-algebra of the free group on infinitely many generators), and
the Boolean ones. We also provide a generalization of De Finetti Theorem to the
Fermi CAR algebra (corresponding to the q-deformed Commutation Relations with
q=-1), by showing that any state is symmetric if and only if it is
conditionally independent and identically distributed with respect to the tail
algebra. The Boolean stochastic processes provide examples for which the
condition to be independent and identically distributed w.r.t. the tail
algebra, without mentioning the {\it a-priori} existence of a preserving
conditional expectation, is in general meaningless in the quantum setting.
Finally, we study the ergodic properties of a class of remarkable states on the
full group C*-algebra of the free group on infinitely many generators, that is
the so-called Haagerup states.


title: Spinning Janus doublets driven in uniform AC electric fields

abstract:
  We provide an experimental proof-of-concept for a robust, continuously
rotating microstructure - consisting of two metallodielectric
(gold-polystyrene)Janus particles rigidly attached to each other - which is
driven in uniform ac fields by asymmetric induced-charge electroosmosis. The
pairs (doublets) are stabilized on the substrate surface which is parallel to
the plane of view and normal to the direction of the applied electric field. We
find that the radius of orbit and angular velocity of the pair are
predominantly dependent on the relative orientations of the interfaces between
the metallic and dielectric hemispheres and that the electrohydrodynamic
particle-particle interactions are small. Additionally, we verify that both the
angular and linear velocities of the pair are proportional to the square of the
applied field which is consistent with the theory for non-linear
electrokinetics. A simple kinematic rigid body model is used to predict the
paths and double velocities (angular and linear) based on their relative
orientations with good agreement.


title: Spectral optimization problems for potentials and measures

abstract:
  In the present paper we consider spectral optimization problems involving the
Schr\"odinger operator $-\Delta +\mu$ on $\R^d$, the prototype being the
minimization of the $k$ the eigenvalue $\lambda_k(\mu)$. Here $\mu$ may be a
capacitary measure with prescribed torsional rigidity (like in the Kohler-Jobin
problem) or a classical nonnegative potential $V$ which satisfies the integral
constraint $\ds \int V^{-p}dx \le m$ with $0<p<1$. We prove the existence of
global solutions in $\R^d$ and that the optimal potentials or measures are
equal to $+\infty$ outside a compact set.


title: On base sizes for algebraic groups

abstract:
  Let $G$ be a permutation group on a set $\Omega$. A subset of $\Omega$ is a
base for $G$ if its pointwise stabilizer is trivial; the base size of $G$ is
the minimal cardinality of a base. In this paper we initiate the study of bases
for algebraic groups defined over an algebraically closed field. In particular,
we calculate the base size for all primitive actions of simple algebraic
groups, obtaining the precise value in almost all cases. We also introduce and
study two new base measures, which arise naturally in this setting. We give an
application concerning the essential dimension of simple algebraic groups, and
we establish several new results on base sizes for the corresponding finite
groups of Lie type. The latter results are an important contribution to the
classical study of bases for finite primitive permutation groups. We also
indicate some connections with generic stabilizers for representations of
simple algebraic groups.


title: Local Maxima of Quadratic Boolean Functions

abstract:
  How many strict local maxima can a real quadratic function on $\{0,1\}^n$
have? Holzman conjectured a maximum of $n \choose \lfloor n/2 \rfloor$. The aim
of this paper is to prove this conjecture. Our approach is via a generalization
of Sperner's theorem that may be of independent interest.


title:
Transmit Beamforming for MIMO Communication Systems with Low Precision
  ADC at the Receiver

abstract:
  Multiple antenna systems have been extensively used by standards designing
multi-gigabit communication systems operating in bandwidth of several GHz. In
this paper, we study the use of transmitter (Tx) beamforming techniques to
improve the performance of a MIMO system with a low precision ADC. We motivate
an approach to use eigenmode transmit beamforming (which imposes a diagonal
structure in the complete MIMO system) and use an eigenmode power allocation
which minimizes the uncoded BER of the finite precision system. Although we
cannot guarantee optimality of this approach, we observe that even low with
precision ADC, it performs comparably to full precision system with no
eigenmode power allocation. For example, in a high throughput MIMO system with
a finite precision ADC at the receiver, simulation results show that for a 3/4
LDPC coded 2x2 MIMO OFDM 16-QAM system with 3-bit precision ADC at the
receiver, a BER of 0.0001 is achieved at an SNR of 26 dB. This is 1 dB better
than that required for the same system with full precision but equal eigenmode
power allocation.


title: Serpentine channels: micro -- rheometers for fluid relaxation times

abstract:
  We propose a novel device capable of measuring the relaxation time of
viscoelastic fluids as small as 1\,ms. In contrast to most rheometers, which by
their very nature are concerned with producing viscometric or
nearly-viscometric flows, here we make use of an elastic instability which
occurs in the flow of viscoelastic fluids with curved streamlines. To calibrate
the rheometer we combine simple scaling arguments with relaxation times
obtained from first normal-stress difference data measured in a classical shear
rheometer. As an additional check we also compare these relaxation times to
those obtained from Zimm theory and good agreement is observed. Once
calibrated, we show how the serpentine rheometer can be used to access smaller
polymer concentrations and lower solvent viscosities where classical
measurements become difficult or impossible to use due to inertial and/or
resolution limitations. In the absence of calibration the serpentine channel
can still be a very useful comparative or index device.


title:
Justifying Typicality Measures of Boltzmannian Statistical Mechanics and
  Dynamical Systems

abstract:
  A popular view in contemporary Boltzmannian statistical mechanics is to
interpret the measures as typicality measures. In measure-theoretic dynamical
systems theory measures can similarly be interpreted as typicality measures.
However, a justification why these measures are a good choice of typicality
measures is missing, and the paper attempts to fill this gap. The paper first
argues that Pitowsky's (2012) justification of typicality measures does not fit
the bill. Then a first proposal of how to justify typicality measures is
presented. The main premises are that typicality measures are invariant and are
related to the initial probability distribution of interest (which are
translation-continuous or translation-close). The conclusion are two theorems
which show that the standard measures of statistical mechanics and dynamical
systems are typicality measures. There may be other typicality measures, but
they agree about judgements of typicality. Finally, it is proven that if
systems are ergodic or epsilon-ergodic, there are uniqueness results about
typicality measures.


title:
Notes on the compatibility of type Ia supernovae data and varying--$G$
  cosmology

abstract:
  Observational data for type Ia supernovae, shows that the expansion of the
universe is accelerated. This accelerated expansion can be described by a
cosmological constant or by dark energy models like quintessence. An
interesting question may be raised here. Is it possible to describe the
accelerated expansion of universe using varying--$G$ cosmological models? Here
we shall show that the price for having accelerated expansion in
slow--varying--$G$ models (in which the dynamical terms of $G$ are ignored) is
to have highly non--conserved matter and also that it is in contradiction with
other data.


title: Reduction of One Loop Feynman Diagrams in Scalar Field Theory

abstract:
  This is a historical note. In 1979 we wrote a paper in a Russian Journal
called Vestnik Leingradskogo Gosudarstvennogo Universiteta. We considered
massive scalar quantum filed theory. One loop Feynman diagrams were evaluated.
Theorem was proved that one loop diagram with many internal lines [more then
dimension of space-time] can be expressed in terms of one loop diagram with
number of internal lines equal to the dimension of space-time [multiplied by
tree diagrams]. This is translation in English.


title: What Are the New Implications of Chaos for Unpredictability?

abstract:
  From the beginning of chaos research until today, the unpredictability of
chaos has been a central theme. It is widely believed and claimed by
philosophers, mathematicians and physicists alike that chaos has a new
implication for unpredictability, meaning that chaotic systems are
unpredictable in a way that other deterministic systems are not. Hence one
might expect that the question 'What are the new implications of chaos for
unpredictability?' has already been answered in a satisfactory way. However,
this is not the case. I will critically evaluate the existing answers and argue
that they do not fit the bill. Then I will approach this question by showing
that chaos can be defined via mixing, which has not been explicitly argued for.
Based on this insight, I will propose that the sought-after new implication of
chaos for unpredictability is the following: for predicting any event all
sufficiently past events are approximately probabilistically irrelevant.


title:
On homological rigidity and flexibility of exact Lagrangian
  endocobordisms

abstract:
  We show that an exact Lagrangian cobordism $L\subset \mathbb R \times P
\times \mathbb R$ from a Legendrian submanifold $\Lambda\subset P\times \mathbb
R$ to itself satisfies $H_i(L;\mathbb F)=H_i(\Lambda;\mathbb F)$ for any field
$\mathbb F$ in the case when $\Lambda$ admits a spin exact Lagrangian filling
and the concatenation of any spin exact Lagrangian filling of $\Lambda$ and $L$
is also spin. The main tool used is Seidel's isomorphism in wrapped Floer
homology. In contrast to that, for loose Legendrian submanifolds of
$\mathbb{C}^n \times \mathbb R$, we construct examples of such cobordisms whose
homology groups have arbitrary high ranks. In addition, we prove that the front
$S^m$-spinning construction preserves looseness, which implies certain
forgetfulness properties of it.


title: Integrability of solutions to mixed stochastic differential equations

abstract:
  We prove that the standard conditions that provide unique solvability of a
mixed stochastic differential equations also guarantee that its solution
possesses finite moments. We also present conditions supplying existence of
exponential moments. For a special equation whose coefficients do not satisfy
the linear growth condition, we find conditions for integrability of its
solution.


title:
Distribution of lifetimes of kinetochore-microtubule attachments:
  interplay of energy landscape, molecular motors and microtubule
  (de-)polymerization

abstract:
  Before a cell divides into two daughter cells, chromosomes are replicated
resulting in two sister chromosomes embracing each other. Each sister
chromosome is bound to a separate proteinous structure, called kinetochore
(kt), that captures the tip of a filamentous protein, called microtubule (MT).
Two oppositely oriented MTs pull the two kts attached to two sister chromosomes
thereby pulling the two sisters away from each other. Here we theoretically
study an even simpler system, namely an isolated kt coupled to a single MT;
this system mimics an {\it in-vitro} experiment where a single kt-MT attachment
is reconstituted using purified extracts from budding yeast. Our models not
only account for the experimentally observed "catch-bond-like" behavior of the
kt-MT coupling, but also make new predictions on the probability distribution
of the lifetimes of the attachments. In principle, our new predictions can be
tested by analyzing the data collected in the {\it in-vitro} experiments
provided the experiment is repeated sufficiently large number of times. Our
theory provides a deep insight into the effects of (a) size, (b) energetics,
and (c) stochastic kinetics of the kt-MT coupling on the distribution of the
lifetimes of these attachments.


title: Flipping surfaces

abstract:
  We study semistable extremal threefold neighborhoods following earlier work
of Mori, Koll\'ar, and Prokhorov. We classify possible flips and extend Mori's
algorithm for computing flips of extremal neighborhoods of type k2A to more
general neighborhoods of type k1A. In fact we show that they belong to the same
deformation family as k2A, and we explicitly construct the universal family of
extremal neighborhoods. This construction follows very closely Mori's division
algorithm, which we interpret as a sequence of mutations in the cluster algebra
of rank 2 with general coefficients. We identify, in the versal deformation
space of a cyclic quotient singularity, the locus of deformations such that the
total space admits a (terminal) antiflip. We show that these deformations come
from at most two irreducible components of the versal deformation space. As an
application, we give an algorithm for computing stable one-parameter
degenerations of smooth projective surfaces (under some conditions) and
describe several components of the Koll\'ar-Shepherd-Barron boundary of the
moduli space of smooth canonically polarized surfaces of geometric genus zero.


title:
Construction of positivity preserving numerical schemes for
  multidimensional stochastic differential equations

abstract:
  In this note we work on the construction of positive preserving numerical
schemes for systems of stochastic differential equations. We use the semi
discrete idea that we have proposed before proposing now a numerical scheme
that preserves positivity on multidimensional stochastic differential equations
converging strongly in the mean square sense to the true solution.


title: Congestion Control using FEC for Conversational Multimedia Communication

abstract:
  In this paper, we propose a new rate control algorithm for conversational
multimedia flows. In our approach, along with Real-time Transport Protocol
(RTP) media packets, we propose sending redundant packets to probe for
available bandwidth. These redundant packets are Forward Error Correction (FEC)
encoded RTP packets. A straightforward interpretation is that if no losses
occur, the sender can increase the sending rate to include the FEC bit rate,
and in the case of losses due to congestion the redundant packets help in
recovering the lost packets. We also show that by varying the FEC bit rate, the
sender is able to conservatively or aggressively probe for available bandwidth.
We evaluate our FEC-based Rate Adaptation (FBRA) algorithm in a network
simulator and in the real-world and compare it to other congestion control
algorithms.


title: Random Walk with Long-Range Constraints

abstract:
  We consider a model of a random height function with long-range constraints
on a discrete segment. This model was suggested by Benjamini, Yadin and
Yehudayoff and is a generalization of simple random walk. The random function
is uniformly sampled from all graph homomorphisms from the graph P_{n,d} to the
integers Z, where the graph P_{n,d} is the discrete segment {0,1,..., n} with
edges between vertices of different parity whose distance is at most 2d+1. Such
a graph homomorphism can be viewed as a height function whose values change by
exactly one along edges of the graph P_{n,d}. We also consider a similarly
defined model on the discrete torus.
  Benjamini, Yadin and Yehudayoff conjectured that this model undergoes a phase
transition from a delocalized to a localized phase when d grows beyond a
threshold c*log(n). We establish this conjecture with the precise threshold
log_2(n). Our results provide information on the typical range and variance of
the height function for every given pair of n and d, including the critical
case when d-log_2(n) tends to a constant.
  In addition, we identify the local limit of the model, when d is constant and
n tends to infinity, as an explicitly defined Markov chain.


title: Grain Size segregation in debris discs

abstract:
  In most debris discs, dust grain dynamics is strongly affected by stellar
radiation pressure. As this mechanism is size-dependent, we expect dust grains
to be spatially segregated according to their sizes. However, because of the
complex interplay between radiation pressure, collisions and dynamical
perturbations, this spatial segregation of the particle size distribution (PSD)
has proven difficult to investigate with numerical models. We propose to
explore this issue using a new-generation code that can handle some of the
coupling between dynamical and collisional effects. We investigate how PSDs
behave in both unperturbed discs "at rest" and in discs pertubed by planetary
objects. We use the DyCoSS code of Thebault(2012) to investigate the coupled
effect of collisions, radiation pressure and dynamical perturbations in systems
having reached a steady state. We consider 2 setups: a narrow ring perturbed by
an exterior planet, and an extended disc into which a planet is embedded. For
both setups we consider an additional unperturbed case with no planet. We also
investigate how possible spatial size segregation affect disc images at
different wavelengths. We find that PSDs are always strongly spatially
segregated. The only case for which they follow a standard dn/dr = C.r**(-3.5)
law is for an unperturbed narrow ring, but only within the parent body ring
itself. For all other configurations, the PSD can strongly depart from such
power laws and have strong spatial gradients. As an example, the geometrical
cross section of the disc is rarely dominated by the smallest grains on bound
orbits, as it is expected to be in standard PSDs in s**q with q<-3. Although
the exact profiles and spatial variations of PSDs are a complex function of the
considered set-up, we are however able to derive some robust results that
should be useful for image-or-SED-fitting models of observed discs.


title: Geodesic Rosen continued fractions

abstract:
  We describe how to represent Rosen continued fractions by paths in a class of
graphs that arise naturally in hyperbolic geometry. This representation gives
insight into Rosen's original work about words in Hecke groups, and it also
helps us to identify Rosen continued fraction expansions of shortest length.


title: Gabriel 2-Quivers for Finitary 2-Categories

abstract:
  We develop the theory of 2-quivers and quiver 2-categories to run in parallel
with the classical theory of quiver algebras. A quiver 2-category is always
finitary, and, conversely, every finitary 2-category will be bi-equivalent with
a quiver 2-category for a unique underlying reduced 2-quiver.
  As an application, we produce an example of a fiat 2-category, one of whose
Duflo involutions is not self-adjoint.


title:
The asymptotic behavior of the density of the supremum of L\'evy
  processes

abstract:
  Let us consider a real L\'evy process X whose transition probabilities are
absolutely continuous and have bounded densities. Then the law of the past
supremum of X before any deterministic time t is absolutely continuous on
(0,\infty). We show that its density f_t(x) is continuous on (0,\infty) if and
only if the potential density h' of the upward ladder height process is
continuous on (0,\infty). Then we prove that f_t behaves at 0 as h'. We also
describe the asymptotic behaviour of f_t, when t tends to infinity. Then some
related results are obtained for the density of the meander and this of the
entrance law of the L\'evy process conditioned to stay positive.


title: Impacting the bioscience progress by backporting software for Bio-Linux

abstract:
  In year 2006 Bio-Linux with the work of Tim Booth and team gives its rising
and provide an operating system that was and still specialized in providing a
bioinformatic specific software environment for the working needs in this
corner of bioscience. It is shown that Bio-Linux is affected by a 2 year
release cycle and with this the final releases of Bio-Linux will not have the
latest bioinformatic software on board. The paper shows how to get around this
huge time gap and bring new software for Bio-Linux on board through a process
that is called backporting. A summary of within the work to this paper just
backported bioinformatic tools is given. A describtion of a workflow for
continuously integration of the newest bioinformatic tools gives an outlook to
further concrete planned developments and the influence of speeding up
scientific progress.


title:
Loops, sign structures and emergent Fermi statistics in
  three-dimensional quantum dimer models

abstract:
  We introduce and study three-dimensional quantum dimer models with positive
resonance terms. We demonstrate that their ground state wave functions exhibit
a nonlocal sign structure that can be exactly formulated in terms of loops, and
as a direct consequence, monomer excitations obey Fermi statistics. The sign
structure and Fermi statistics in these "signful" quantum dimer models can be
naturally described by a parton construction, which becomes exact at the
solvable point.


title: Evolution of the Modern Phase of Written Bangla: A Statistical Study

abstract:
  Active languages such as Bangla (or Bengali) evolve over time due to a
variety of social, cultural, economic, and political issues. In this paper, we
analyze the change in the written form of the modern phase of Bangla
quantitatively in terms of character-level, syllable-level, morpheme-level and
word-level features. We collect three different types of corpora---classical,
newspapers and blogs---and test whether the differences in their features are
statistically significant. Results suggest that there are significant changes
in the length of a word when measured in terms of characters, but there is not
much difference in usage of different characters, syllables and morphemes in a
word or of different words in a sentence. To the best of our knowledge, this is
the first work on Bangla of this kind.


title: A version of Kalton's theorem for the space of regular operators

abstract:
  In this note we extend some recent results in the space of regular operators.
In particular, we provide the following Banach lattice version of a classical
result of Kalton: Let $E$ be an atomic Banach lattice with an order continuous
norm and $F$ a Banach lattice. Then the following are equivalent: (i)
$L^r(E,F)$ contains no copy of $\ell_\infty$, \,\, (ii) $L^r(E,F)$ contains no
copy of $c_0$, \,\, (iii) $K^r(E,F)$ contains no copy of $c_0$, \,\, (iv)
$K^r(E,F)$ is a (projection) band in $L^r(E,F)$, \,\, (v) $K^r(E,F)=L^r(E,F)$.


title: Lattice modes in a dusty plasma crystal

abstract:
  A model is presented to explain the normal mode features of dust particles in
a planar zigzag crystal chain for the first and second neighbors. The degrees
of freedom of particles are the longitudinal and transverse displacements in
plane coupled by the first and second neighbor harmonic forces in
two-dimensions (2D). The constant electric force duded to the electrodes to
keep the zigzag structure is calculated. The coupling between transverse and
longitudinal dust-lattice (DL) modes is derived. The latter is considered due
to the energy of the electrostatic (Yukawa) potential. Moreover coupled
(acoustic and optical) and decoupled (longitudinal and transverse) branches of
dust lattice modes for different lattice parameters and structures are studied.
Propagation of the longitudinal and acoustic modes is found to be strictly
dependent on the value of the distance between the two chains; below that value
mode may not propagate Finally it is shown that the frequencies of the acoustic
(optical) branches increase (decrease) with increasing the distance between the
two chains.


title:
EEG Signal Processing and Classification for the Novel Tactile-Force
  Brain-Computer Interface Paradigm

abstract:
  The presented study explores the extent to which tactile-force stimulus
delivered to a hand holding a joystick can serve as a platform for a brain
computer interface (BCI). The four pressure directions are used to evoke
tactile brain potential responses, thus defining a tactile-force brain computer
interface (tfBCI). We present brain signal processing and classification
procedures leading to successful interfacing results. Experimental results with
seven subjects performing online BCI experiments provide a validation of the
hand location tfBCI paradigm, while the feasibility of the concept is
illuminated through remarkable information-transfer rates.


title:
Calibration of AGILE-GRID with In-Flight Data and Monte Carlo
  Simulations

abstract:
  Context: AGILE is a gamma-ray astrophysics mission which has been in orbit
since 23 April 2007 and continues to operate reliably. The gamma-ray detector,
AGILE-GRID, has observed Galactic and extragalactic sources, many of which were
collected in the first AGILE Catalog. Aims: We present the calibration of the
AGILE-GRID using in-flight data and Monte Carlo simulations, producing
Instrument Response Functions (IRFs) for the effective area A_eff), Energy
Dispersion Probability (EDP), and Point Spread Function (PSF), each as a
function of incident direction in instrument coordinates and energy. Methods:
We performed Monte Carlo simulations at different gamma-ray energies and
incident angles, including background rejection filters and Kalman filter-based
gamma-ray reconstruction. Long integrations of in-flight observations of the
Vela, Crab and Geminga sources in broad and narrow energy bands were used to
validate and improve the accuracy of the instrument response functions.
Results: The weighted average PSFs as a function of spectra correspond well to
the data for all sources and energy bands. Conclusions: Changes in the
interpolation of the PSF from Monte Carlo data and in the procedure for
construction of the energy-weighted effective areas have improved the
correspondence between predicted and observed fluxes and spectra of celestial
calibration sources, reducing false positives and obviating the need for
post-hoc energy-dependent scaling factors. The new IRFs have been publicly
available from the Agile Science Data Centre since November 25, 2011, while the
changes in the analysis software will be distributed in an upcoming release.


title:
New Berry-Esseen bounds for non-linear functionals of Poisson random
  measures

abstract:
  This paper deals with the quantitative normal approximation of non-linear
functionals of Poisson random measures, where the quality is measured by the
Kolmogorov distance. Combining Stein's method with the Malliavin calculus of
variations on the Poisson space, we derive a bound, which is strictly smaller
than what is available in the literature. This is applied to sequences of
multiple integrals and sequences of Poisson functionals having a finite chaotic
expansion. This leads to new Berry-Esseen bounds in de Jong's theorem for
degenerate U-statistics. Moreover, geometric functionals of intersection
processes of Poisson $k$-flats, random graph statistics of the Boolean model
and non-linear functionals of Ornstein-Uhlenbeck-L\'evy processes are
considered.


title: On multiplication of double cosets for $\GL(\infty)$ over a finite field

abstract:
  We consider a group $GL(\infty)$ and its parabolic subgroup $B$ corresponding
to partition $\infty=\infty+m+\infty$. Denote by $P$ the kernel of the natural
homomorphism $B\to GL(m)$. We show that the space of double cosets of
$GL(\infty)$ by $P$ admits a natural structure of a semigroup. In fact this
semigroup acts in subspaces of $P$-fixed vectors of some unitary
representations of $GL(\infty)$ over finite field.


title:
Cross-lingual Pseudo-Projected Expectation Regularization for Weakly
  Supervised Learning

abstract:
  We consider a multilingual weakly supervised learning scenario where
knowledge from annotated corpora in a resource-rich language is transferred via
bitext to guide the learning in other languages. Past approaches project labels
across bitext and use them as features or gold labels for training. We propose
a new method that projects model expectations rather than labels, which
facilities transfer of model uncertainty across language boundaries. We encode
expectations as constraints and train a discriminative CRF model using
Generalized Expectation Criteria (Mann and McCallum, 2010). Evaluated on
standard Chinese-English and German-English NER datasets, our method
demonstrates F1 scores of 64% and 60% when no labeled data is used. Attaining
the same accuracy with supervised CRFs requires 12k and 1.5k labeled sentences.
Furthermore, when combined with labeled examples, our method yields significant
improvements over state-of-the-art supervised methods, achieving best reported
numbers to date on Chinese OntoNotes and German CoNLL-03 datasets.


title: Power-central polynomials on matrices

abstract:
  Any multilinear non-central polynomial $p$ (in several noncommuting
variables) takes on values of degree $n$ in the matrix algebra $M_n(F)$ over an
infinite field $F$. The polynomial $p$ is called {\it $\nu$-central} for
$M_n(F)$ if $p^\nu$ takes on only scalar values, with $k$ minimal such.
Multilinear $\nu$-central polynomials do not exist for any $\nu$ with $n>3$,
thereby answering a question of Drensky. Saltman proved that an arbitrary
polynomial
  $p$ cannot be $\nu$-central for $M_n(F)$ for $n$ odd unless $n$ is prime; we
show for $n$ even, that $\nu$ must be 2.


title:
How can one observe gravitational angular momentum radiation from a
  dynamical source near null infinity?

abstract:
  To answer a question of how can one observed angular momentum radiation near
null infinity, one can first transform the dynamical twisting vacuum solution
and make it satisfy Bondi coordinate conditions in the asymptotical region of
the null infinity. We then obtain the Bondi-Sachs news function and also find
the relationship of how does the angular momentum contribute to the news
functions from the exact solution sense. By using the Komar's integral of
angular momentum, the gravitational angular momentum flux of the dynamical
twisting space-time can be obtained. All of our results can be compared with
the Kerr solution, Robbinson-Trautmann or Schwarzschild solution. This study
can provide a theoretical basis to understand the correlations of gravitational
radiations near a rotating dynamical horizon and null infinity.


title:
Universality of Phase Transition Dynamics: Topological Defects from
  Symmetry Breaking

abstract:
  In the course of a non-equilibrium continuous phase transition, the dynamics
ceases to be adiabatic in the vicinity of the critical point as a result of the
critical slowing down (the divergence of the relaxation time in the
neighborhood of the critical point). This enforces a local choice of the broken
symmetry and can lead to the formation of topological defects. The Kibble-Zurek
mechanism (KZM) was developed to describe the associated nonequilibrium
dynamics and to estimate the density of defects as a function of the quench
rate through the transition. During recent years, several new experiments
investigating formation of defects in phase transitions induced by a quench
both in classical and quantum mechanical systems were carried out. At the same
time, some established results were called into question. We review and analyze
the Kibble-Zurek mechanism focusing in particular on this surge of activity,
and suggest possible directions for further progress.


title: Random Matrix Application to Correlations Among Volatility of Assets

abstract:
  In this paper, we apply tools from the random matrix theory (RMT) to
estimates of correlations across volatility of various assets in the S&P 500.
The volatility inputs are estimated by modeling price fluctuations as
GARCH(1,1) process. The corresponding correlation matrix is constructed. It is
found that the distribution of a significant number of eigenvalues of the
volatility correlation matrix matches with the analytical result from the RMT.
Furthermore, the empirical estimates of short and long-range correlations among
eigenvalues, which are within the RMT bounds, match with the analytical results
for Gaussian Orthogonal ensemble (GOE) of the RMT. To understand the
information content of the largest eigenvectors, we estimate the contribution
of GICS industry groups in each eigenvector. In comparison with eigenvectors of
correlation matrix for price fluctuations, only few of the largest eigenvectors
of volatility correlation matrix are dominated by a single industry group. We
also study correlations among `volatility return' and get similar results.

categories: q-fin.ST physics.data-an q-fin.RM q-fin.TR


title:
Gravitational radiation and angular momentum flux from a spinning
  dynamical black hole

abstract:
  A four-dimensional asymptotic expansion scheme is used to study the next
order effects of the nonlinearity near a spinning dynamical black hole. The
angular momentum flux and energy flux formula are then obtained by asymptotic
expansion and the compatibility of the coupling Newman-Penrose equations. After
constructing the reference frame in terms of the compatible constant spinors,
the energy-momentum flux is derived and it is related to the black hole area
growth. Directly from the flux formula of the spinning dynamical horizon, we
find that the physically reasonable condition on the positivity of the
gravitational energy flux yields that the shear will monotonically decrease
with time.


title: On the genera of certain integral lattices in ternary quadratic spaces

abstract:
  This paper treats certain integral lattices with respect to ternary quadratic
forms, which are obtained from the data of a non-zero element and a maximal
lattice in a quaternary quadratic space. Such a lattice can be described by
means of an order associated with the lattice in the even Clifford algebra of
the ternary form. This provides a correspondence between the genus of the
lattice and that of the order.


title: The Science Cases for Building a Band 1 Receiver Suite for ALMA

abstract:
  We present the various science cases for building Band 1 receivers as part of
ALMA's ongoing Development Program. We describe the new frequency range for
Band 1 of 35-52 GHz, a range chosen to maximize the receiver suite's scientific
impact. We first describe two key science drivers: 1) the evolution of grains
in protoplanetary disks and debris disks, and 2) molecular gas in galaxies
during the era of re-ionization. Studies of these topics with Band 1 receivers
will significantly expand ALMA's Level 1 Science Goals. In addition, we
describe a host of other exciting continuum and line science cases that require
ALMA's high sensitivity and angular resolution. For example, ALMA Band 1
continuum data will probe the Sunyaev-Zel'dovich Effect in galaxy clusters,
Very Small Grains and spinning dust, ionized jets from young stars, spatial and
flaring studies of Sgr A*, the acceleration sites of solar flares, pulsar wind
nebulae, radio supernovae, and X-ray binaries. Furthermore, ALMA Band 1 line
data will probe chemical differentiation in cloud cores, complex carbon chain
molecules, extragalactic radio recombination lines, masers, magnetic fields
through Zeeman effect measurements, molecular outflows from young stars, the
co-evolution of star formation and active galactic nuclei, and the molecular
content of galaxies at z ~ 3. ALMA provides similar to better sensitivities
than the JVLA over 35-50 GHz, with differences increasing with frequency.
ALMA's smaller antennas and shorter baselines, greater number of baselines, and
single-dish capabilities, however, give it a significant edge for observing
extended emission, making wide-field maps (mosaics), or attaining high image
fidelity, as required by the described science cases.


title: Limits on anisotropic inflation from the Planck data

abstract:
  Temperature anisotropy of the cosmic microwave background offers a test of
the fundamental symmetry of spacetime during cosmic inflation. Violation of
rotational symmetry yields a distinct signature in the power spectrum of
primordial fluctuations as $P({\mathbf k})=P_0(k)[1+g_*(\hat{\mathbf
k}\cdot\hat{\mathbf E}_{\rm cl})^2]$, where $\hat{\mathbf E}_{\rm cl}$ is a
preferred direction in space and $g_*$ is an amplitude. Using the
\textit{Planck} 2013 temperature maps, we find no evidence for violation of
rotational symmetry, $g_*=0.002\pm 0.016$ (68% CL), once the known effects of
asymmetry of the \textit{Planck} beams and Galactic foreground emission are
removed.


title: On The Doubly Stochastic Realization Of Spectra

abstract:
  An $n$-list $\lambda:=\left(r; \lambda_2, \ldots, \lambda_n\right)$ of
complex numbers with $r>0,$ is said to be realizable if $\lambda$ is the
spectrum of $n\times n$ nonnegative matrix $A$ and in this case $A$ is said to
be a nonnegative realization of $\lambda$. If, in addition, each row and column
sum of $A$ equals $r$, then $\lambda$ is said to be doubly stochastically
realizable and in such case $A$ is said to be a doubly stochastic realization
for $\lambda$. In 1997, Guo proved that if $\left(\lambda_2,\ldots,
\lambda_n\right)$ is any list of complex numbers which is closed under complex
conjugation then there exists a least real number $\lambda_0$ with
$\max\limits_{2\leq j\leq n}|\lambda_j|\leq\lambda_0\leq 2n\max\limits_{2\leq
j\leq n}|\lambda_j|$ such that the list of complex numbers $\{
\lambda_1,\lambda_2,...,\lambda_n\}$ is realizable if and only if
$\lambda_1\geq \lambda_0$. In 2020, Julio and Soto showed that the upper bound
may be reduced to $(n-1)\max\limits_{2\leq j\leq n}|\lambda_j|$ in the case
when at least one of the $\lambda_i$ is real.
  In this paper, we first describe an algorithm for passing from a nonnegative
realization to a doubly stochastic realization. As applications, we give a new
sufficient condition for a stochastic matrix $A$ to be cospectral to a doubly
stochastic matrix $B$ and in this case $B$ is shown to be the unique closest
doubly stochastic matrix to $A$ with respect to the Frobenius norm. Then, our
next results slightly improve the upper bound for the nonnegative realization
presented by Julio and Soto and in the case when none of the $\lambda_i$ is
real, we also give an improvement of Guo's bound. Then, for doubly stochastic
realizations, we obtain an upper bound that improves Guo's bound as well.
Finally, for certain particular cases, we give a further improvement of our
last bound for doubly stochastic realization.


title:
Weak convergence of probability measures: a topological vector space
  point of view

abstract:
  Weak convergence of probability measures is one of the most important topics
in the field probability and statistics. In this survey paper, we look at weak
convergence of probability measures from the topological vector space point of
view. We start from the key concepts and results about weak topology and weak
convergence under the general framework of topological vector spaces. Then we
restrict our attention to the space of probability measures and see how the
general results specialize to those in probability theory. Finally, we will
review some important facts about the metrizability of weak topology. We hope
the general approach reviewed in this paper can provide an alternative view and
some insights.


title:
Adaptive Multicarrier Quadrature Division Modulation for
  Continuous-Variable Quantum Key Distribution

abstract:
  In a continuous-variable quantum key distribution (CVQKD) system, the
information is conveyed by coherent state carriers. The quantum continuous
variables are sent through a quantum channel, where the presence of the
eavesdropper adds a white Gaussian noise to the transmission. The amount of
tolerable noise and loss is a crucial point in CVQKD, since it determines the
overall performance of the protocol, including the secure key rates and
transmission distances. In this work, we propose the adaptive multicarrier
quadrature division (AMQD) modulation technique for CVQKD. The method
granulates the Gaussian random input into Gaussian subcarrier continuous
variables in the encoding phase, which are then decoded by a continuous unitary
transformation. The subcarrier coherent variables formulate Gaussian
sub-channels from the physical link with strongly diverse transmission
capabilities, which leads to significantly improved transmission efficiency,
higher tolerable loss, and excess noise. We also investigate a
modulation-variance adaption technique within the AMQD scheme, which provides
optimal capacity-achieving communication over the sub-channels in the presence
of a Gaussian noise.


title:
non-Abelian T-duality, G2-structure Rotation and Holographic Duals of
  N=1 Chern-Simons Theories

abstract:
  A new dynamic SU(3)-structure solution in type-IIA is found by T-dualising a
deformation of the Maldacena-Nastase solution along an SU(2) isometry. It is
argued that this is dual to a quiver gauge theory with multiple Chern-Simons
levels. A clear way of defining Chern-Simons levels in terms of Page charges is
presented, which is also used to define a Chern-Simons term for the
G2-structure analogue of Klebanov-Strassler, providing evidence of a cascade in
both the ranks and levels of the dual quiver.


title: Upper bounds for domination related parameters in graphs on surfaces

abstract:
  In this paper we give tight upper bounds on the total domination number, the
weakly connected domination number and the connected domination number of a
graph in terms of order and Euler characteristic. We also present upper bounds
for the restrained bondage number, the total restrained bondage number and the
restricted edge connectivity of graphs in terms of the orientable/nonorientable
genus and maximum degree.


title:
On Uniqueness of Complete Ricci Flow Solution with Curvature Bounded
  from Below

abstract:
  Let $(M,g)$ be a complete noncompact non-collapsing $n$-dimensional
riemannian manifold, whose complex sectional curvature is bounded from below
and scalar curvature is bounded from above. Then ricci flow with above as its
initial data, has at most one solution in the class of complete riemannian
metric with complex sectional curvature bounded from below.


title:
Application of Compressive Sensing Theory for the Reconstruction of
  Signals in Plastic Scintillators

abstract:
  Compressive Sensing theory says that it is possible to reconstruct a measured
signal if an enough sparse representation of this signal exists in comparison
to the number of random measurements. This theory was applied to reconstruct
signals from measurements of plastic scintillators. Sparse representation of
obtained signals was found using SVD transform.


title:
Magnetization Properties and Vortex Phase Diagram in CuxTiSe2 Single
  Crystals

abstract:
  We have investigated the magnetization properties and flux dynamics of
superconducting Cu$_x$TiSe$_2$ single crystals within wide range of copper
concentrations. We find that the superconducting anisotropy is low and
independent on copper concentration ($\gamma\sim1.7$), except in the case of
strongly underdoped samples ($x\leq0.06$) that show a gradual increase in
anisotropy to $\gamma\sim1.9$. The vortex phase diagram in this material is
characterized by broad region of vortex liquid phase that is unusual for such
low-$T_c$ superconductor with low anisotropy. Below the irreversibility line
the vortex solid state supports relatively low critical current densities as
compared to the depairing current limit ($J_c/J_0\sim10^{-7}$). All this points
out that local fluctuations in copper concentration have little effect on bulk
pinning properties in this system.


title:
System Response Kernel Calculation for List-mode Reconstruction in Strip
  PET Detector

abstract:
  Reconstruction of the image in Positron Emission Tomographs (PET) requires
the knowledge of the system response kernel which describes the contribution of
each pixel (voxel) to each tube of response (TOR). This is especially important
in list-mode reconstruction systems, where an efficient analytical
approximation of such function is required. In this contribution, we present a
derivation of the system response kernel for a novel 2D strip PET.


title:
Are Deterministic Descriptions And Indeterministic Descriptions
  Observationally Equivalent?

abstract:
  The central question of this paper is: are deterministic and indeterministic
descriptions observationally equivalent in the sense that they give the same
predictions? I tackle this question for measure-theoretic deterministic systems
and stochastic processes, both of which are ubiquitous in science. I first show
that for many measure-theoretic deterministic systems there is a stochastic
process which is observationally equivalent to the deterministic system.
Conversely, I show that for all stochastic processes there is a
measure-theoretic deterministic system which is observationally equivalent to
the stochastic process. Still, one might guess that the measure-theoretic
deterministic systems which are observationally equivalent to stochastic
processes used in science do not include any deterministic systems used in
science. I argue that this is not so because deterministic systems used in
science even give rise to Bernoulli processes. Despite this, one might guess
that measure-theoretic deterministic systems used in science cannot give the
same predictions at every observation level as stochastic processes used in
science. By proving results in ergodic theory, I show that also this guess is
misguided: there are several deterministic systems used in science which give
the same predictions at every observation level as Markov processes. All these
results show that measure-theoretic deterministic systems and stochastic
processes are observationally equivalent more often than one might perhaps
expect. Furthermore, I criticise the claims of the previous philosophy papers
Suppes (1993, 1999), Suppes and de Barros (1996) and Winnie (1998) on
observational equivalence.

categories: math.DS nlin.CD physics.class-ph physics.hist-ph


title:
HST/COS Observations of the Quasar Q0302-003: Probing the He II
  Reionization Epoch and QSO Proximity Effects

abstract:
  Q0302-003 ($z=3.2860 \pm 0.0005$) was the first quasar discovered that showed
a He II Gunn-Peterson trough, a sign of incomplete helium reionization at $z >
2.9$. We present its HST/Cosmic Origins Spectrograph far-UV medium-resolution
spectrum, which resolves many spectral features for the first time, allowing
study of the quasar itself, the intergalactic medium, and quasar proximity
effects. Q0302-003 has a harder intrinsic extreme-UV spectral index than
previously claimed, as determined from both a direct fit to the spectrum
(yielding $\alpha_{\nu} = -0.8$) and the helium-to-hydrogen ion ratio in the
quasar's line-of-sight proximity zone. Intergalactic absorption along this
sightline shows that the helium Gunn-Peterson trough is largely black in the
range $2.87 < z < 3.20$, apart from ionization due to local sources, indicating
that helium reionization has not completed at these redshifts. However, we
tentatively report a detection of nonzero flux in the high-redshift trough when
looking at low-density regions, but zero flux in higher-density regions. This
constrains the He II fraction to be a few percent, suggesting helium
reionization has progressed substantially by $z \sim 3.1$. The Gunn-Peterson
trough recovers to a He II Ly$\alpha$ forest at $z < 2.87$. We confirm a
transmission feature due to the ionization zone around a $z = 3.05$ quasar just
off the sightline, and resolve the feature for the first time. We discover a
similar such feature possibly caused by a luminous $z = 3.23$ quasar further
from the sightline, which suggests that this quasar has been luminous for >34
Myr.


title:
Edge Couplers with relaxed Alignment Tolerance for Pick-and-Place Hybrid
  Integration of III-V Lasers with SOI Waveguides

abstract:
  We report on two edge-coupling and power splitting devices for hybrid
integration of III-V lasers with sub-micrometric silicon-on-insulator (SOI)
waveguides. The proposed devices relax the horizontal alignment tolerances
required to achieve high coupling efficiencies and are suitable for passively
aligned assembly with pick-and-place tools. Light is coupled to two on-chip
single mode SOI waveguides with almost identical power coupling efficiency, but
with a varying relative phase accommodating the lateral misalignment between
the laser diode and the coupling devices, and is suitable for the
implementation of parallel optics transmitters. Experimental characterization
with both a lensed fiber and a Fabry-P\'erot semiconductor laser diode has been
performed. Excess insertion losses (in addition to the 3 dB splitting) taken as
the worst case over both waveguides of respectively 2 dB and 3.1 dB, as well as
excellent 1 dB horizontal loss misalignment ranges of respectively 2.8 um and
3.8 um (worst case over both in-plane axes) have been measured for the two
devices. Back-reflections to the laser are below -20 dB for both devices within
the 1 dB misalignment range. Devices were fabricated with 193 nm DUV optical
lithography and are compatible with mass-manufacturing with mainstream CMOS
technology.


title: Search for baryon number violation in top-quark decays

abstract:
  A search for baryon number violation (BNV) in top-quark decays is performed
using pp collisions produced by the LHC at sqrt(s) = 8 TeV. The top-quark decay
considered in this search results in one light lepton (muon or electron), two
jets, but no neutrino in the final state. Data used for the analysis were
collected by the CMS detector and correspond to an integrated luminosity of
19.5 inverse femtobarns. The event selection is optimized for top quarks
produced in pairs, with one undergoing the BNV decay and the other the standard
model hadronic decay to three jets. No significant excess of events over the
expected yield from standard model processes is observed. The upper limits at
95% confidence level on the branching fraction of the BNV top-quark decay are
calculated to be 0.0016 and 0.0017 for the muon and the electron channels,
respectively. Assuming lepton universality, an upper limit of 0.0015 results
from the combination of the two channels. These limits are the first that have
been obtained on a BNV process involving the top quark.


title: Heat kernel estimates under the Ricci-Harmonic map flow

abstract:
  The paper considers the Ricci flow, coupled with the harmonic map flow
between two manifolds. We derive estimates for the fundamental solution of the
corresponding conjugate heat equation and we prove an analog of Perelman's
differential Harnack inequality. As an application, we find a connection
between the entropy functional and the best constant in the Sobolev imbedding
theorem in $\mathbb{R}^n$.


title:
On the Observational Equivalence of Continuous-Time Deterministic and
  Indeterministic Descriptions

abstract:
  This paper presents and philosophically assesses three types of results on
the observational equivalence of continuous-time measure-theoretic
deterministic and indeterministic descriptions. The first results establish
observational equivalence to abstract mathematical descriptions. The second
results are stronger because they show observational equivalence between
deterministic and indeterministic descriptions found in science. Here I also
discuss Kolmogorov's contribution. For the third results I introduce two new
meanings of `observational equivalence at every observation level'. Then I show
the even stronger result of observational equivalence at every (and not just
some) observation level between deterministic and indeterministic descriptions
found in science. These results imply the following. Suppose one wants to find
out whether a phenomenon is best modeled as deterministic or indeterministic.
Then one cannot appeal to differences in the probability distributions of
deterministic and indeterministic descriptions found in science to argue that
one of the descriptions is preferable because there is no such difference.
Finally, I criticise the extant claims of philosophers and mathematicians on
observational equivalence.


title:
Dynamical control of state transfer through noisy quantum channels:
  optimal tradeoff of speed and fidelity

abstract:
  We propose a method of optimally controlling state transfer through a noisy
quantum channel (spin-chain). This process is treated as qubit state-transfer
through a fermionic bath. We show that dynamical modulation of the
boundary-qubits levels suffices to ensure fast and high-fidelity state
transfer. This is achievable by dynamically optimizing the transmission
spectrum of the channel. The resulting optimal control is robust against both
static and fluctuating noise.


title: Non-idempotent intersection types and strong normalisation

abstract:
  We present a typing system with non-idempotent intersection types, typing a
term syntax covering three different calculi: the pure {\lambda}-calculus, the
calculus with explicit substitutions {\lambda}S, and the calculus with explicit
substitutions, contractions and weakenings {\lambda}lxr. In each of the three
calculi, a term is typable if and only if it is strongly normalising, as it is
the case in (many) systems with idempotent intersections. Non-idempotency
brings extra information into typing trees, such as simple bounds on the
longest reduction sequence reducing a term to its normal form. Strong
normalisation follows, without requiring reducibility techniques. Using this,
we revisit models of the {\lambda}-calculus based on filters of intersection
types, and extend them to {\lambda}S and {\lambda}lxr. Non-idempotency
simplifies a methodology, based on such filter models, that produces modular
proofs of strong normalisation for well-known typing systems (e.g. System F).
We also present a filter model by means of orthogonality techniques, i.e. as an
instance of an abstract notion of orthogonality model formalised in this paper
and inspired by classical realisability. Compared to other instances based on
terms (one of which rephrases a now standard proof of strong normalisation for
the {\lambda}-calculus), the instance based on filters is shown to be better at
proving strong normalisation results for {\lambda}S and {\lambda}lxr. Finally,
the bounds on the longest reduction sequence, read off our typing trees, are
refined into an exact measure, read off a specific typing tree (called
principal); in each of the three calculi, a specific reduction sequence of such
length is identified. In the case of the {\lambda}-calculus, this complexity
result is, for longest reduction sequences, the counterpart of de Carvalho's
result for linear head-reduction sequences.


title:
Progenitor models of the electromagnetic transient associated with the
  short GRB 130603B

abstract:
  An electromagnetic transient powered by the radioactive decay of r-process
elements, a so-called kilonova/macronova, is one of the possible observable
consequences of compact binary mergers including at east one neutron star.
Recent observations strongly suggest the first discovery of the electromagnetic
transient, which is associated with the short GRB 130603B. We explore a
possible progenitor of this event combining the numerical-relativity
simulations and radiative transfer simulations of the dynamical ejecta of
binary neutron star and black hole - neutron star mergers. We show that the
ejecta models within a realistic parameter range consistently reproduce the
observed near-infrared excess. We also show that the soft equation of state
models for binary neutron star mergers and the stiff equation of state models
for black hole - neutron star mergers are favored to reproduce the observed
luminosity.


title:
Analyticity of the Subcritical and Critical Quasi-Geostrophic equations
  in Besov Spaces

abstract:
  We establish analyticity of the subcritical and critical quasi-geostrophic
equations in critical Besov spaces. The main method is so-called Gevrey
estimates, which is motivated by the work of Foias and Temam. We show that mild
solutions \theta(t), are Gevrey regular, i.e. they satisfy the estimate
\sup_{t>0}\|e^{\alpha t^{1/\gamma}\Lambda_1}\theta(t)\|_{\cap L}<\infty. for a
suitably chosen \alpha>0 and a scaling invariant Besov space {\cap L}.


title: Justifying Definitions in Mathematics---Going Beyond Lakatos

abstract:
  This paper addresses the actual practice of justifying definitions in
mathematics. First, I introduce the main account of this issue, namely
Lakatos's proof-generated definitions. Based on a case study of definitions of
randomness in ergodic theory, I identify three other common ways of justifying
definitions: natural-world-justification, condition-justification and
redundancy-justification. Also, I clarify the interrelationships between the
different kinds of justification. Finally, I point out how Lakatos's ideas are
limited: they fail to show that various kinds of justification can be found and
can be reasonable, and they fail to acknowledge the interplay between the
different kinds of justification.


title:
Global stability of the normal state of superconductors in the presence
  of a strong electric current

abstract:
  We consider the time-dependent Ginzburg-Landau model of superconductivity in
the presence of an electric current flowing through a two-dimensional wire. We
show that when the current is sufficiently strong the solution converges in the
long-time limit to the normal state. We provide two types of upper bounds for
the critical current where such global stability is achieved: by using the
principal eigenvalue of the magnetic Laplacian associated with the normal
magnetic field, and through the norm of the resolvent of the linearized
steady-state operator. In the latter case we estimate the resolvent norm in
large domains by the norms of approximate operators defined on the plane and
the half-plane. We also obtain a lower bound, in large domains, for the above
critical current by obtaining the current for which the normal state looses its
local stability.