title:
On Performance Modeling for MANETs under General Limited Buffer
  Constraint

abstract:
  Understanding the real achievable performance of mobile ad hoc networks
(MANETs) under practical network constraints is of great importance for their
applications in future highly heterogeneous wireless network environments. This
paper explores, for the first time, the performance modeling for MANETs under a
general limited buffer constraint, where each network node maintains a limited
source buffer of size $B_s$ to store its locally generated packets and also a
limited shared relay buffer of size $B_r$ to store relay packets for other
nodes. Based on the Queuing theory and birth-death chain theory, we first
develop a general theoretical framework to fully depict the source/relay buffer
occupancy process in such a MANET, which applies to any distributed MAC
protocol and any mobility model that leads to the uniform distribution of
nodes' locations in steady state. With the help of this framework, we then
derive the exact expressions of several key network performance metrics,
including achievable throughput, throughput capacity, and expected end-to-end
delay. We further conduct case studies under two network scenarios and provide
the corresponding theoretical/simulation results to demonstrate the application
as well as the efficiency of our theoretical framework. Finally, we present
extensive numerical results to illustrate the impacts of buffer constraint on
the performance of a buffer-limited MANET.


title:
Distributed Nash equilibrium seeking for aggregative games with coupled
  constraints

abstract:
  In this paper, we study a distributed continuous-time design for aggregative
games with coupled constraints in order to seek the generalized Nash
equilibrium by a group of agents via simple local information exchange. To
solve the problem, we propose a distributed algorithm based on projected
dynamics and non-smooth tracking dynamics, even for the case when the
interaction topology of the multi-agent network is time-varying. Moreover, we
prove the convergence of the non-smooth algorithm for the distributed game by
taking advantage of its special structure and also combining the techniques of
the variational inequality and Lyapunov function.


title: Sisyphus Laser Cooling of a Polyatomic Molecule

abstract:
  We perform magnetically-assisted Sisyphus laser cooling of the triatomic free
radical strontium monohydroxide (SrOH). This is achieved with principal optical
cycling in the rotationally closed $P\left(N"=1\right)$ branch of either the
$\tilde{X}^{2}\Sigma^{+}\left(000\right)\leftrightarrow\tilde{A}^{2}\Pi_{1/2}\left(000\right)$
or the
$\tilde{X}^{2}\Sigma^{+}\left(000\right)\leftrightarrow\tilde{B}^{2}\Sigma^{+}\left(000\right)$
vibronic transitions. Molecules lost into the excited vibrational states during
the cooling process are repumped back through the $\tilde{B}\left(000\right)$
state for both the $\left(100\right)$ level of the Sr-O stretching mode and the
$\left(02^{0}0\right)$ level of the bending mode. The transverse temperature of
a SrOH molecular beam is reduced in one dimension by two orders of magnitude to
$\sim700\ {\rm \mu K}$. This approach opens a path towards creating a variety
of ultracold polyatomic molecules, including much larger ones, by means of
direct laser cooling.


title:
The geometry properties of parity and time reversal operators in two
  dimensional spaces

abstract:
  The parity operator $\cal P$ and time reversal operator $\cal T$ are two
important operators in the quantum theory, in particular, in the $\cal
PT$-symmetric quantum theory. By using the concrete forms of $\cal P$ and $\cal
T$, we discuss their geometrical properties in two dimensional spaces. It is
showed that if $\cal T$ is given, then all $\cal P$ links with the quadric
surfaces; if $\cal P$ is given, then all $\cal T$ links with the quadric
curves. Moreover, we give out the generalized unbroken $\cal PT$-symmetric
condition of an operator. The unbroken $\cal PT$-symmetry of a Hermitian
operator is also showed in this way.


title:
The 26 December 2001 Solar Event Responsible for GLE63. I. Observations
  of a Major Long-Duration Flare with the Siberian Solar Radio Telescope

abstract:
  Ground Level Enhancements (GLEs) of cosmic-ray intensity occur, on average,
once a year. Due to their rareness, studying the solar sources of GLEs is
especially important to approach understanding their origin. The SOL2001-12-26
eruptive-flare event responsible for GLE63 seems to be challenging in some
aspects. Deficient observations limited its understanding. Analysis of extra
observations found for this event provided new results shading light on the
flare. This article addresses the observations of this flare with the Siberian
Solar Radio Telescope (SSRT). Taking advantage of its instrumental
characteristics, we analyze the detailed SSRT observations of a major
long-duration flare at 5.7 GHz without cleaning the images. The analysis
confirms that the source of GLE63 was associated with an event in active region
9742 that comprised two flares. The first flare (04:30-05:03 UT) reached a GOES
importance of about M1.6. Two microwave sources were observed, whose brightness
temperatures at 5.7 GHz exceeded 10 MK. The main flare, up to the M7.1
importance, started at 05:04 UT, and occurred in strong magnetic fields. The
observed microwave sources reached about 250 MK. They were not static. Having
appeared on the weaker-field periphery of the active region, the microwave
sources moved toward each other nearly along the magnetic neutral line,
approaching a stronger-field core of the active region, and then moved away
from the neutral line like expanding ribbons. These motions rule out an
association of the non-thermal microwave sources with a single flaring loop.


title:
Spine decomposition and $L\log L$ criterion for superprocesses with
  non-local branching mechanisms

abstract:
  In this paper, we provide a pathwise spine decomposition for superprocesses
with both local and non-local branching mechanisms under a martingale change of
measure. This result complements the related results obtained in Evans (1993),
Kyprianou et al. (2012) and Liu, Ren and Song (2009) for superprocesses with
purely local branching mechanisms and in Chen, Ren and Song (2016) and
Kyprianou and Palau (2016) for multitype superprocesses. As an application of
this decomposition, we obtain necessary/sufficient conditions for the limit of
the fundamental martingale to be non-degenerate. In particular, we obtain
extinction properties of superprocesses with non-local branching mechanisms as
well as a Kesten-Stigum $L\log L$ theorem for the fundamental martingale.


title: Tighter bound of Sketched Generalized Matrix Approximation

abstract:
  Generalized matrix approximation plays a fundamental role in many machine
learning problems, such as CUR decomposition, kernel approximation, and matrix
low rank approximation. Especially with today's applications involved in larger
and larger dataset, more and more efficient generalized matrix approximation
algorithems become a crucially important research issue. In this paper, we find
new sketching techniques to reduce the size of the original data matrix to
develop new matrix approximation algorithms. Our results derive a much tighter
bound for the approximation than previous works: we obtain a $(1+\epsilon)$
approximation ratio with small sketched dimensions which implies a more
efficient generalized matrix approximation.


title:
Self-triggered Model Predictive Control for Continuous-Time Systems: A
  Multiple Discretizations Approach

abstract:
  In this paper, we propose a new self-triggered formulation of Model
Predictive Control for continuous-time linear networked control systems. Our
control approach, which aims at reducing the number of transmitting control
samples to the plant, is derived by parallelly solving optimal control problems
with different sampling time intervals. The controller then picks up one
sampling pattern as a transmission decision, such that a reduction of
communication load and the stability will be obtained. The proposed strategy is
illustrated through comparative simulation examples.


title:
Spectral and scattering theory for Gauss-Bonnet operators on perturbed
  topological crystals

abstract:
  In this paper we investigate the spectral and the scattering theory of
Gauss--Bonnet operators acting on perturbed periodic combinatorial graphs. Two
types of perturbation are considered: either a multiplication operator by a
short-range or a long-range potential, or a short-range type modification of
the graph. For short-range perturbations, existence and completeness of local
wave operators are proved. In addition, similar results are provided for the
Laplacian acting on edges.


title: Three-dimensional network of Drosophila brain hemisphere

abstract:
  The first step to understanding brain function is to determine the brain's
network structure. We report a three-dimensional analysis of the brain network
of the fruit fly Drosophila melanogaster by synchrotron-radiation tomographic
microscopy. A skeletonized wire model of the left half of the brain network was
built by tracing the three-dimensional distribution of X-ray absorption
coefficients. The obtained models of neuronal processes were classified into
groups on the basis of their three-dimensional structures. These classified
groups correspond to neuronal tracts that send long-range projections or
repeated structures of the optic lobe. The skeletonized model is also composed
of neuronal processes that could not be classified into the groups. The
distribution of these unclassified structures correlates with the distribution
of contacts between neuronal processes. This suggests that neurons that cannot
be classified into typical structures should play important roles in brain
functions. The quantitative description of the brain network provides a basis
for structural and statistical analyses of the Drosophila brain. The challenge
is to establish a methodology for reconstructing the brain network in a
higher-resolution image, leading to a comprehensive understanding of the brain
structure.


title:
Kleitman's conjecture about families of given size minimizing the number
  of $k$-chains

abstract:
  A central theorem in combinatorics is Sperner's Theorem, which determines the
maximum size of a family $\mathcal{F}\subseteq \mathcal{P}(n)$ that does not
contain a $2$-chain $F_1\subsetneq F_2$. Erd\H{o}s later extended this result
and determined the largest family not containing a $k$-chain $F_1\subsetneq
\ldots \subsetneq F_k$. Erd\H{o}s and Katona and later Kleitman asked how many
such chains must appear in families whose size is larger than the corresponding
extremal result.
  This question was resolved for $2$-chains by Kleitman in $1966$, who showed
that amongst families of size $M$ in $\mathcal{P}(n)$, the number of $2$-chains
is minimized by a family whose sets are taken as close to the middle layer as
possible. He also conjectured that the same conclusion should hold for all $k$,
not just $2$. The best result on this question is due to Das, Gan and Sudakov
who showed that Kleitman's conjecture holds for families whose size is at most
the size of the $k+1$ middle layers of $\mathcal{P}(n)$, provided $k\leq n-6$.
Our main result is that for every fixed $k$ and $\epsilon>0$, if $n$ is
sufficiently large then Kleitman's conjecture holds for families of size at
most $(1-\epsilon)2^n$, thereby establishing Kleitman's conjecture
asymptotically. Our proof is based on ideas of Kleitman and Das, Gan and
Sudakov. Several open problems are also given.


title: X-ray microtomography in biology

abstract:
  Progress in high-resolution x-ray microtomography has provided us with a
practical approach to determining three-dimensional (3D) structures of opaque
samples at micrometer to submicrometer resolution. In this review, we give an
introduction to hard x-ray microtomography and its application to the
visualization of 3D structures of biological soft tissues. Practical aspects of
sample preparation, handling, data collection, 3D reconstruction, and structure
analysis are described. Furthermore, different sample contrasting methods are
approached in detail. Examples of microtomographic studies are overviewed to
present an outline of biological applications of x-ray microtomography. We also
provide perspectives of biological microtomography as the convergence of
sciences in x-ray optics, biology, and structural analysis.


title: A dilaton-pion mass relation

abstract:
  Recently, Golterman and Shamir presented an effective field theory which is
supposed to describe the low-energy physics of the pion and the dilaton in an
$SU(N_c)$ gauge theory with $N_f$ Dirac fermions in the fundamental
representation. By employing this formulation with a slight but important
modification, we derive a relation between the dilaton mass squared~$m_\tau^2$,
with and without the fermion mass~$m$, and the pion mass squared~$m_\pi^2$ to
the leading order of the chiral logarithm. This is analogous to a similar
relation obtained by Matsuzaki and~Yamawaki on the basis of a somewhat
different low-energy effective field theory. Our relation reads
$m_\tau^2=m_\tau^2|_{m=0}+KN_f\hat{f}_\pi^2m_\pi^2/(2\hat{f}_\tau^2)+O(m_\pi^4\ln
m_\pi^2)$ with~$K=9$, where $\hat{f}_\pi$ and~$\hat{f}_\tau$ are decay
constants of the pion and the dilaton, respectively. This mass relation differs
from the one derived by Matsuzaki and~Yamawaki on the points that
$K=(3-\gamma_m)(1+\gamma_m)$, where $\gamma_m$ is the mass anomalous dimension,
and the leading chiral logarithm correction is~$O(m_\pi^2\ln m_\pi^2)$.
For~$\gamma_m\sim1$, the value of the decay constant~$\hat{f}_\tau$ estimated
from our mass relation becomes $\sim50\%$ larger than $\hat{f}_\tau$ estimated
from the relation of Matsuzaki and~Yamawaki.


title:
Defect production in nonequilibrium phase transitions: Experimental
  investigation of the Kibble-Zurek mechanism in a two-qubit quantum simulator

abstract:
  Systems passing through quantum critical points at finite rates have a finite
probability of undergoing transitions between different eigenstates of the
instantaneous Hamiltonian. This mechanism was proposed by Kibble as the
underlying mechanism for the formation of topological defects in the early
universe and by Zurek for condensed matter systems. Here, we use a system of
nuclear spins as an experimental quantum simulator undergoing a non-equilibrium
quantum phase transition. The experimental data confirm the validity of the
Kibble-Zurek mechanism of defect formation.


title: Inverse Compton emission from a cosmic-ray precursor in RX J1713.7-3946

abstract:
  Recently, the High Energy Stereoscopic System (H.E.S.S.) reported two new
interesting results for a gamma-ray emitting supernova remnant, RX J1713.7-3946
(G347.3-0.5). The first result is the establishment of a broken power-law
spectrum of GeV-TeV gamma-rays. The other is a more extended gamma-ray spatial
profile than the one in the X-ray band. In this paper, we show both of these
results can be explained by inverse Compton emission from accelerated
electrons. If the maximum energy of electrons being accelerated decreases with
time, the broken power-law spectrum can be generated by accumulation.
Furthermore, the extended component of gamma-ray profile can be interpreted as
a CR precursor of currently accelerated electrons.


title:
Contact Binaries as Viable Distance Indicators: New, Competitive (V)JHKs
  Period-Luminosity Relations

abstract:
  Based on the largest catalogs currently available, comprising 6090 contact
binaries (CBs) and 2167 open clusters, we determine the near-infrared $JHK_{\rm
s}$ CB period--luminosity (PL) relations, for the first time achieving the low
levels of intrinsic scatter that make these relations viable as competitive
distance calibrators. To firmly establish our distance calibration on the basis
of open cluster CBs, we require that (i) the CB of interest must be located
inside the core radius of its host cluster; (ii) the CB's proper motion must be
located within the $2\sigma$ distribution of that of its host open cluster; and
(iii) the CB's age, $t$, must be comparable to that of its host cluster, i.e.,
$\Delta \log (t\mbox{ yr}^{-1}) <0.3$. We thus select a calibration sample of
66 CBs with either open cluster distances or accurate space-based parallaxes.
The resulting near-infrared PL relations, for both late-type (i.e., W Ursae
Majoris-type) and---for the first time---early-type CBs, are as accurate as the
well-established $JHK_{\rm s}$ Cepheid PL relations, (characterized by
single-band statistical uncertainties of $\sigma < 0.10$ mag). We show that CBs
can be used as viable distance tracers, yielding distances with uncertainties
of better than 5\% for 90\% of the 6090 CBs in our full sample. By combining
the full $JHK_{\rm s}$ photometric data set, CBs can trace distances with an
accuracy, $\sigma=0.05 \mbox{ (statistical)} \pm0.03 \mbox{ (systematic)}$ mag.
The 102 CBs in the Large Magellanic Cloud are used to determine a distance
modulus to the galaxy of $(m-M_V)_0^{\rm LMC}=18.41\pm0.20$ mag.


title:
A method for estimating spatial resolution of real image in the Fourier
  domain

abstract:
  Spatial resolution is a fundamental parameter in structural sciences. In
crystallography, the resolution is determined from the detection limit of
high-angle diffraction in reciprocal space. In electron microscopy, correlation
in the Fourier domain is used for estimating the resolution. In this paper, we
report a method for estimating the spatial resolution of real images from a
logarithmic intensity plot in the Fourier domain. The logarithmic intensity
plots of test images indicated that the full width at half maximum of a
Gaussian point-spread function can be estimated from the images. The spatial
resolution of imaging X-ray microtomography using Fresnel zone-plate optics was
also estimated with this method. A cross section of a test object visualized
with the imaging microtomography indicated that square-wave patterns up to
120-nm pitch were resolved. The logarithmic intensity plot was calculated from
a tomographic cross section of brain tissue. The full width at half maximum of
the point spread function estimated from the plot coincided with the resolution
determined from the test object. These results indicated that the logarithmic
intensity plot in the Fourier domain provides an alternative measure of the
spatial resolution without explicitly defining a noise criterion.


title:
Estimation of presampling modulation transfer function in synchrotron
  radiation microtomography

abstract:
  The spatial resolution achieved by recent synchrotron radiation
microtomographs should be estimated from the modulation transfer function (MTF)
on the micrometer scale. Step response functions of a synchrotron radiation
microtomograph were determined by the slanted edge method by using
high-precision surfaces of diamond crystal and ion-milled aluminum wire. Tilted
reconstruction was introduced to enable any edge to be used as the slanted edge
by defining the reconstruction pixel matrix in an arbitrary orientation. MTFs
were estimated from the step response functions of the slanted edges. The
obtained MTFs coincided with MTF values estimated from square-wave patterns
milled on the aluminum surface. Although x-ray refraction influences should be
taken into account to evaluate MTFs, any flat surfaces with nanometer roughness
can be used to determine the spatial resolutions of microtomographs.


title:
Submicrometer tomographic resolution examined using a micro-fabricated
  test object

abstract:
  To estimate the spatial resolution of microtomographs, a test object on the
submicrometer scale was prepared by focused ion beam milling and subjected to
microtomographic analysis. Since human tissues are composed of cells and
extracellular matrices with micrometer and submicrometer structures, it is
important to investigate the three-dimensional spatial resolution of
microtomographs used to visualize microstructures of human tissues. The
resolutions along the direction within the tomographic slice plane (in-plane
resolution) and perpendicular to it (through-plane resolution) were determined
from the modulation transfer function of square-wave patterns. The in-plane
resolution was estimated to be 1.2 um from the modulation transfer function of
the non-zoom image. In contrast, the zoom image gave the in-plane resolution of
0.8 um. This in-plane resolution is comparable to the through-plane resolution,
which was estimated to be 0.8 um. Although the two-dimensional radiographs were
taken with the pixel width of half the x-ray optics resolution, these
three-dimensional resolution analyses indicated that the zoom reconstruction
should be performed to achieve the in-plane resolution comparable to the x-ray
optics resolution. The submicrometer three-dimensional analysis was applied in
the structural study of human cerebral tissue stained with high-Z elements and
the obtained tomograms revealed that the microtomographic analysis allows
visualization of the subcellular structures of the cerebral tissue.


title: Ashwin: Plug-and-Play System for Machine-Human Image Annotation

abstract:
  We present an end-to-end machine-human image annotation system where each
component can be attached in a plug-and-play fashion. These components include
Feature Extraction, Machine Classifier, Task Sampling and Crowd Consensus.


title: Three-dimensional microtomographic imaging of human brain cortex

abstract:
  This paper describes an x-ray microtomographic technique for imaging the
three-dimensional structure of the human cerebral cortex. Neurons in the brain
constitute a neural circuit as a three-dimensional network. The brain tissue is
composed of light elements that give little contrast in a hard x-ray
transmission image. The contrast was enhanced by staining neural cells with
metal compounds. The obtained structure revealed the microarchitecture of the
gray and white matter regions of the frontal cortex, which is responsible for
the higher brain functions.


title: On the structure of etale motivic cohomology

abstract:
  We discuss the structure of integral etale motivic cohomology groups of
smooth and projective schemes over algebraically closed fields, finite fields,
local fields, and arithmetic schemes.


title:
Pressure-induced topological phase transition in polar semiconductor
  BiTeBr

abstract:
  We performed X-ray diffraction and electrical resistivity measurement up to
pressures of 5 GPa and the first-principles calculations utilizing experimental
structural parameters to investigate the pressure-induced topological phase
transition in BiTeBr having a noncentrosymmetric layered structure (space group
P3m1). The P3m1 structure remains stable up to pressures of 5 GPa; the ratio of
lattice constants, c/a, has a minimum at pressures of 2.5 - 3 GPa. In the same
range, the temperature dependence of resistivity changes from metallic to
semiconducting at 3 GPa and has a plateau region between 50 and 150 K in the
semiconducting state. Meanwhile, the pressure variation of band structure shows
that the bulk band-gap energy closes at 2.9 GPa and re-opens at higher
pressures. Furthermore, according to the Wilson loop analysis, the topological
nature of electronic states in noncentrosymmetric BiTeBr at 0 and 5 GPa are
explicitly revealed to be trivial and non-trivial, respectively. These results
strongly suggest that pressure-induced topological phase transition in BiTeBr
occurs at the pressures of 2.9 GPa.


title:
Uniform Regularity and Vanishing Viscosity limit for the
  chemotaxis-Navier-Stokes system in a 3D bounded domain

abstract:
  We investigate the uniform regularity and vanishing viscosity limit for the
incompressible chemotaxis-Navier-Stokes system in a smooth bounded domain
$\Omega\subset\mathbb{R}^3$. It is shown that there exists a unique strong
solution of the incompressible chemotaxis-Navier-Stokes system in a finite time
interval which is independent of the viscosity coefficient. Moreover, the
solution is uniformly bounded in a conormal Sobolev space, which allows us to
take the vanishing viscosity limit to obtain the incompressible inviscid
chemotaxis-Navier-Stokes system.


title: Exceptional Points in three-dimensional Nanostructures

abstract:
  Exceptional points (EPs) are degeneracies in open wave systems where at least
two energy levels and their corresponding eigenstates coalesce. We report
evidence of the existence of EPs in 3D plasmonic nanostructures. The systems
are composed of coupled plasmonic nanoresonators and can be judiciously and
systematically driven to EPs by controlling symmetry-compatible modes via their
near-field and far-field interactions. The proposed platform opens the way to
the investigation of EPs for enhanced light-matter interactions and
applications in communication, sensing and imaging.


title:
A Decoupling Two-Grid Method for the Steady-State Poisson-Nernst-Planck
  Equations

abstract:
  Poisson-Nernst-Planck equations are widely used to describe the
electrodiffusion of ions in a solvated biomolecular system. Two kinds of
two-grid finite element algorithms are proposed to decouple the steady-state
Poisson-Nernst-Planck equations by coarse grid finite element approximations.
Both theoretical analysis and numerical experiments show the efficiency and
effectiveness of the two-grid algorithms for solving Poisson-Nernst-Planck
equations.


title:
Infrared-Faint Radio Sources in the SERVS deep fields: Pinpointing AGNs
  at high redshift

abstract:
  Infrared-Faint Radio Sources (IFRS) represent an unexpected class of objects
relatively bright at radio wavelength, but unusually faint at infrared (IR) and
optical wavelengths. A recent and extensive campaign on the radio-brightest
IFRSs (S_{1.4GHz} >= 10 mJy) has provided evidence that most of them (if not
all) contain an AGN. Still uncertain is the nature of the radio-faintest ones
(S_{1.4GHz} <= 1 mJy). The scope of this paper is to assess the nature of the
radio-faintest IFRSs, testing their classification and improving the knowledge
of their IR properties making use of the most sensitive IR survey available so
far: the Spitzer Extragalactic Representative Volume Survey (SERVS). We also
explore how the criteria of IFRSs can be fine-tuned to pinpoint radio-loud AGNs
at very high redshift (z > 4). We analysed a number of IFRS samples identified
in SERVS fields, including a new sample (21 sources) extracted from the Lockman
Hole. 3.6 and 4.5 mum IR counterparts of the 64 sources located in the SERVS
fields were searched for, and, when detected, their IR properties were studied.
We compared the radio/IR properties of the IR-detected IFRSs with those
expected for a number of known classes of objects. We found that they are
mostly consistent with a mixture of high-redshift (z >= 3) radio-loud AGNs. The
faintest ones (S_{1.4GHz} ~ 100 muJy), however, could be also associated with
nearer (z ~ 2) dust-enshrouded star-burst galaxies. We also argue that, while
IFRSs with radio-to-IR ratios > 500 can very efficiently pinpoint radio-loud
AGNs at redshift 2 < z < 4, lower radio-to-IR ratios (~ 100--200) are expected
for higher redshift radio-loud AGNs.


title: CERES: A Set of Automated Routines for Echelle Spectra

abstract:
  We present the Collection of Elemental Routines for Echelle Spectra (CERES).
These routines were developed for the construction of automated pipelines for
the reduction, extraction and analysis of spectra acquired with different
instruments, allowing the obtention of homogeneous and standardised results.
This modular code includes tools for handling the different steps of the
processing: CCD image reductions, identification and tracing of the echelle
orders, optimal and rectangular extraction, computation of the wavelength
solution, estimation of radial velocities, and rough and fast estimation of the
atmospheric parameters. Currently, CERES has been used to develop automated
pipelines for thirteen different spectrographs, namely CORALIE, FEROS, HARPS,
ESPaDOnS, FIES, PUCHEROS, FIDEOS, CAFE, DuPont/Echelle, Magellan/Mike,
Keck/HIRES, Magellan/PFS and APO/ARCES, but the routines can be easily used in
order to deal with data coming from other spectrographs. We show the high
precision in radial velocity that CERES achieves for some of these instruments
and we briefly summarize some results that have already been obtained using the
CERES pipelines.


title: Harmonics Effect on Ion-Bulk Waves in CH Plasmas

abstract:
  The harmonics effect on ion-bulk (IBk) waves has been researched by Vlasov
simulation. The condition of excitation of a large-amplitude IBk waves is given
to explain the phenomenon of strong short-wavelength electrostatic activity in
solar wind. When $k$ is much lower than $k_{lor}/2$ ($k_{lor}$ is the wave
number at loss-of-resonance point), the IBk waves will not be excited to a
large amplitude, because a large part of energy will be spread to harmonics.
The nature of nonlinear IBk waves in the condition of $k<k_{lor}/2$ is undamped
Bernstein-Greene-Kruskal-like waves with harmonics superposition. Only when the
wave number $k$ of IBk waves satisfies $k_{lor}/2\lesssim k\leq k_{lor}$, can a
large-amplitude and mono-frequency IBk wave be excited. These results give a
guidance for a novel scattering mechanism related to IBk waves in the field of
laser plasma interaction.


title: Deformable Map Matching for Uncertain Loop-Less Maps

abstract:
  In the classical context of robotic mapping and localization, map matching is
typically defined as the task of finding a rigid transformation (i.e., 3DOF
rotation/translation on the 2D moving plane) that aligns the query and
reference maps built by mobile robots. This definition is valid in loop-rich
trajectories that enable a mapper robot to close many loops, for which precise
maps can be assumed. The same cannot be said about the newly emerging
autonomous navigation and driving systems, which typically operate in loop-less
trajectories that have no large loop (e.g., straight paths). In this paper, we
propose a solution that overcomes this limitation by merging the two maps. Our
study is motivated by the observation that even when there is no large loop in
either the query or reference map, many loops can often be obtained in the
merged map. We add two new aspects to map matching: (1) image retrieval with
discriminative deep convolutional neural network (DCNN) features, which
efficiently generates a small number of good initial alignment hypotheses; and
(2) map merge, which jointly deforms the two maps to minimize differences in
shape between them. To realize practical computation time, we also present a
preemption scheme that avoids excessive evaluation of useless map-matching
hypotheses. To verify our approach experimentally, we created a novel
collection of uncertain loop-less maps by utilizing the recently published
North Campus Long-Term (NCLT) dataset and its ground-truth GPS data. The
results obtained using these map collections confirm that our approach improves
on previous map-matching approaches.


title:
Bell inequality of frequency-bin entangled photon pairs with
  time-resolved detection

abstract:
  Entanglement, describing the inseparability of a quantum multiparty system,
is one of the most intriguing features of quantum mechanics. Violation of Bell
inequality, for ruling out the possibility of local hidden variable theories,
is commonly used as a strong witness for quantum entanglement. In previous Bell
test experiments with photonic entanglement based on two-photon coincidence
measurement, the photon temporal wave packets are absorbed completely by the
detectors. That is, the photon coherence time is much shorter than the
detection time window. Here we demonstrate generation of frequency-bin
entangled narrowband biphotons, and for the first time, test the
Clauser-Horne-Shimony-Holt (CHSH) Bell inequality |S|<= 2 for their nonlocal
temporal correlations with time-resolved detection. We obtain a maximum |S|
value of 2.52+/-0.48 that violates the CHSH inequality. Our result will have
applications in quantum information processing involving time-frequency
entanglement.


title:
The Influence of Environment on the Chemical Evolution in Low-mass
  Galaxies

abstract:
  The mean alpha-to-iron abundance ratio ([$\alpha$/Fe]) of galaxies is
sensitive to the chemical evolution processes at early time, and it is an
indicator of star formation timescale ($\tau_{{\rm SF}}$). Although the
physical reason remains ambiguous, there is a tight relation between
[$\alpha$/Fe] and stellar velocity dispersion ($\sigma$) among massive
early-type galaxies (ETGs). However, no work has shown convincing results as to
how this relation behaves at low masses. We assemble 15 data sets from the
literature and build a large sample that includes 192 nearby low-mass
($18<\sigma<80$~\kms) ETGs. We find that the [$\alpha$/Fe]-$\sigma$ relation
generally holds for low-mass ETGs, except in extreme environments.
Specifically, in normal galaxy cluster environments, the [$\alpha$/Fe]-$\sigma$
relation and its intrinsic scatter are, within uncertainties, similar for
low-mass and high-mass ETGs. However, in the most massive relaxed galaxy
cluster in our sample, the zero point of the relation is higher and the
intrinsic scatter is significantly larger. By contrast, in galaxy groups the
zero point of the relation offsets in the opposite direction, again with
substantial intrinsic scatter. The elevated [$\alpha$/Fe] of low-mass ETGs in
the densest environments suggests that their star formation was quenched
earlier than in high-mass ETGs. For the low-mass ETGs in the lowest density
environments, we suggest that their more extended star formation histories
suppressed their average [$\alpha$/Fe]. The large scatter in [$\alpha$/Fe] may
reflect stochasticity in the chemical evolution of low-mass galaxies.


title:
Learning Action Concept Trees and Semantic Alignment Networks from
  Image-Description Data

abstract:
  Action classification in still images has been a popular research topic in
computer vision. Labelling large scale datasets for action classification
requires tremendous manual work, which is hard to scale up. Besides, the action
categories in such datasets are pre-defined and vocabularies are fixed. However
humans may describe the same action with different phrases, which leads to the
difficulty of vocabulary expansion for traditional fully-supervised methods. We
observe that large amounts of images with sentence descriptions are readily
available on the Internet. The sentence descriptions can be regarded as weak
labels for the images, which contain rich information and could be used to
learn flexible expressions of action categories. We propose a method to learn
an Action Concept Tree (ACT) and an Action Semantic Alignment (ASA) model for
classification from image-description data via a two-stage learning process. A
new dataset for the task of learning actions from descriptions is built.
Experimental results show that our method outperforms several baseline methods
significantly.


title:
Equilibrium binding energies from fluctuation theorems and force
  spectroscopy simulations

abstract:
  Brownian dynamics simulations are used to study the detachment of a particle
from a substrate. Although the model is simple and generic, we attempt to map
its energy, length and time scales onto a specific experimental system, namely
a bead that is weakly bound to a cell and then removed by an optical tweezer.
The external driving force arises from the combined optical tweezer and
substrate potentials, and thermal fluctuations are taken into account by a
Brownian force. The Jarzynski equality and Crooks' fluctuation theorem are
applied to obtain the equilibrium free energy difference between the final and
initial states. To this end, we sample non--equilibrium work trajectories for
various tweezer pulling rates. We argue that this methodology should also be
feasible experimentally for the envisioned system. Furthermore, we outline how
the measurement of a whole free energy profile would allow the experimentalist
to retrieve the unknown substrate potential by means of a suitable
deconvolution. The influence of the pulling rate on the accuracy of the results
is investigated, and umbrella sampling is used to obtain the equilibrium
probability of particle escape for a variety of trap potentials.


title:
Resource Allocation for CoMP in Cellular Networks with Base Station
  Switching

abstract:
  Base station switching (BSS) can results in significant reduction in energy
consumption of cellular networks during low traffic conditions. We show that
the coverage loss due to BSS can be compensated via coordinated multi-point
(CoMP) based transmission in a cluster of base stations. For a BSS with CoMP
based system, we propose various BSS patterns to achieve suitable trade-offs
between energy savings and throughput. We formulate the CoMP resource
allocation and user scheduling as a joint optimization problem. We derive the
optimal time fraction and user scheduling for this problem and use it to
formulate a simplified BSS with CoMP optimization problem. A heuristic that
solves this problem is presented. Through extensive simulations, we show that
suitable trade-offs among energy, coverage, and rate can be achieved by
appropriately selecting the BSS pattern, CoMP cluster, and rate threshold.


title:
A model with interaction of dark components and recent observational
  data

abstract:
  In the proposed model with interaction between dark energy and dark matter,
we consider cosmological scenarios with different equations of state ($w_d$)
for dark energy. For both constant and variable equation of state, we analyze
solutions for dark energy and dark matter in seven variants of the model. We
investigate exact analytic solutions for $w_d={}$ constant equation of state,
and several variants of the model for variable $w_d$. These scenarios are
tested with the current astronomical data from Type Ia Supernovae, baryon
acoustic oscillations, Hubble parameter $H (z)$ and the cosmic microwave
background radiation. Finally, we make a statistical comparison of our
interacting model with $\Lambda$CDM as well as with some other well known
non-interacting cosmological models.


title:
Physical Layer Security-Aware Routing and Performance Tradeoffs in Ad
  Hoc Networks

abstract:
  The application of physical layer security in ad hoc networks has attracted
considerable academic attention recently. However, the available studies mainly
focus on the single-hop and two-hop network scenarios, and the price in terms
of degradation of communication quality of service (QoS) caused by improving
security is largely uninvestigated. As a step to address these issues, this
paper explores the physical layer security-aware routing and performance
tradeoffs in a multi-hop ad hoc network. Specifically, for any given end-to-end
path we first derive its connection outage probability (COP) and secrecy outage
probability (SOP) in closed-form, which serve as the performance metrics of
communication QoS and transmission security, respectively. Based on the
closed-form expressions, we then study the security-QoS tradeoffs to minimize
COP (resp. SOP) conditioned on that SOP (resp. COP) is guaranteed. With the
help of analysis of a given path, we further propose the routing algorithms
which can achieve the optimal performance tradeoffs for any pair of source and
destination nodes in a distributed manner. Finally, simulation and numerical
results are presented to validate the efficiency of our theoretical analysis,
as well as to illustrate the security-QoS tradeoffs and the routing
performance.


title: On the Use of the Tsallis Distribution at LHC Energies

abstract:
  Numerous papers have appeared recently showing fits to transverse momentum
($p_T$) spectra measured at the Large Hadron Collider (LHC) in proton - proton
collisions.This talk focuses on the fits extending to very large values of the
transverse momentum with $p_T$ values up to 200 GeV/c as measured by the ATLAS
and CMS collaborations at $\sqrt{s}$ = 0.9 and 7 TeV. A thermodynamically
consistent form of the Tsallis distribution is used for fitting the transverse
momentum spectra at mid-rapidity. The fits based on the proposed distribution
provide an excellent description over 14 orders of magnitude. Despite this
success, an ambiguity is noted concerning the determination of the parameters
in the Tsallis distribution. This prevents drawing firm conclusions as to the
universality of the parameters appearing in the Tsallis distribution.


title: On Holographic R\'enyi Entropy in Some Modified Theories of Gravity

abstract:
  We perform a detailed analysis of holographic entanglement R\'enyi entropy in
some modified theories of gravity with four dimensional conformal field theory
duals. First, we construct perturbative black hole solutions in a recently
proposed model of Einsteinian cubic gravity in five dimensions, and compute the
R\'enyi entropy as well as the scaling dimension of the twist operators in the
dual field theory. Consistency of these results are verified from the AdS/CFT
correspondence, via a corresponding computation of the Weyl anomaly on the
gravity side. Similar analyses are then carried out for three other examples of
modified gravity in five dimensions that include a chemical potential, namely
Born-Infeld gravity, charged quasi-topological gravity and a class of Weyl
corrected gravity theories with a gauge field, with the last example being
treated perturbatively. Some interesting bounds in the dual conformal field
theory parameters in quasi-topological gravity are pointed out. We also provide
arguments on the validity of our perturbative analysis, whenever applicable.


title: Complement Spaces, Dual Complexes and Polyhedral Product Spaces

abstract:
  In this paper, we define and prove basic properties of complement polyhedral
product spaces, dual complexes and polyhedral join complexes. Then we compute
the universal algebra of polyhedral join complexes under certain split
conditions and the Alexander duality isomorphism on certain polyhedral product
spaces.


title:
The mean number of 3-torsion elements in ray class groups of quadratic
  fields

abstract:
  We determine the average number of $3$-torsion elements in the ray class
groups of fixed (integral) conductor $c$ of quadratic fields ordered by
absolute discriminant, generalizing Davenport and Heilbronn's theorem on class
groups. A consequence of this result is that a positive proportion of such ray
class groups of quadratic fields have trivial 3-torsion subgroup whenever the
conductor $c$ is taken to be a squarefree integer having very few prime factors
none of which are congruent to $1 \bmod 3$. Additionally, we compute the second
main term for the number of $3$-torsion elements in ray class groups with fixed
conductor of quadratic fields with bounded discriminant.


title: Evolution of Strength and Failure of SCC during Early Hydration

abstract:
  The early strength evolution of self-consolidating concrete (SCC) is studied
by a set of non-standard mechanical tests for compressive, tensile, shear and
bending failure. The results are applicable in an industrial environment for
process control, e.g. of slip casting with adaptive molds in robotic
fabrication. A procedure for collapsing data to a master evolution curve is
presented that allows to distinguish two regimes in the evolution. In the
first, the material is capable of undergoing large localized plastic
deformation, as expected from thixotropic yield stress fluids. This is followed
by a transition to cohesive frictional material behavior dominated by crack
growth. The typical differences in tensile and compressive strength of hardened
concrete are observed to originate at the transition. Finally, the evolution of
a limit surface in principal stress space is constructed and discussed.


title: Converting heat into directed transport on a tilted lattice

abstract:
  We present a self-contained engine, which is made of one or more two-level
systems, each of which is coupled to a single bath, as well as to a common load
composed of a particle on a tilted lattice. We show that the energy and the
entropy absorbed by the spins are transferred to the particle thus setting it
into upward motion at an average constant speed, even when driven by a single
spin connected to a single bath. When considering an ensemble of different
spins, the velocity of the particle is larger when the tilt is on resonance
with any of the spins' energy splitting. Interestingly, we find regimes where
the spins' polarization enters periodic cycles with the oscillation period
being determined by the tilt of the lattice.


title: Quantum coherence behaviors of fermionic system in non-inertial frame

abstract:
  In this paper, we analyse the quantum coherence behaviors of a single qubit
in the relativistic regime beyond the single-mode approximation. Firstly, we
investigate the freezing condition of quantum coherence in fermionic system. We
also study the quantum coherence tradeoff between particle and antiparticle
sector. It is found that there exists quantum coherence transfer between
particle and antiparticle sector, but the coherence lost in particle sector is
not entirely compensated by the coherence generation of antiparticle sector.
Besides, we emphatically discuss the cohering power and decohering power of
Unruh channel with respect to the computational basis. It is shown that
cohering power is vanishing and decohering power is dependent of the choice of
Unruh mode and acceleration. Finally, We compare the behaviors of quantum
coherence with geometric quantum discord and entanglement in relativistic
setup. Our results show that this quantifiers in two region converge at
infinite acceleration limit, which implies that this measures become
independent of Unruh modes beyond the single-mode approximations. It is also
demonstrated that the robustness of quantum coherence and geometric quantum
discord are better than entanglement under the influence of acceleration, since
entanglement undergoes sudden death.


title:
On Spaces Associated with Invariant Divisors on Galois Covers of Riemann
  Surfaces and Their Applications

abstract:
  Let $f:X \to S$ be a Galois cover of Riemann surfaces, with Galois group $G$.
In this paper we analyze the $G$-invariant divisors on $X$, and their
associated spaces of meromorphic functions, differentials, and
$q$-differentials. We generalize the trace formula for non-trivial elements of
$G$ on $q$-differentials, as well as the Chevalley--Weil Formula. When $G$ is
Abelian or when the genus of $S$ is 0 we prove additional results, and we also
determine the non-special $G$-invariant divisors when both conditions are
satisfied.


title:
Topological Phase Transition and Chiral-Anomaly Driven Negative
  Magneto-Resistance in Bulk Black Phosphorus

abstract:
  We report the anisotropic magneto-transport measurement on a non-compound
band semiconductor black phosphorus (BP) with magnetic field B up to 16 Tesla
applied in both perpendicular and parallel to electric current I under
hydrostatic pressures. The BP undergoes a topological Lifshitz transition from
band semiconductor to a zero-gap Dirac semimetal state, characterized by a weak
localization-weak antilocaliation transition at low magnetic fields and the
emergence of a nontrivial Berry Phase of detected by SdH magneto-oscillations
in magnetoresistance curves. In the transition region, we observe a
pressure-dependent negative MR only in the B//I configuration. This negative
longitudinal MR is attributed to the Adler-Bell-Jackiw anomaly (topological
E$\cdot$B term) in the presence of weak antilocalization corrections.


title:
Numerical Investigation of Triexciton Stabilization in Diamond with
  Multiple Valleys and Bands

abstract:
  The existence of polyexcitons, the $N$-body complexes of excitons for $N > 2$
in 3D bulk systems, has been controversial for more than 40 years since its
first theoretical suggestion. We investigated the stability of fundamental
excitonic complexes in diamond numerically with the stochastic variational
method (SVM) and an explicitly correlated Gaussian (ECG) basis. The
electron-hole many-body system is described by an effective mass Hamiltonian.
Our model includes the effective mass anisotropy and multiple valley and band
degrees of freedom. We show that the excitons, trions, biexcitons, charged
biexcitons, and triexcitons are stable in diamond. Numerical calculations
reproduce from 81% to 86% of the experimentally reported binding energies for
neutral bound states.


title:
Controllable optical response by modifying the gain and loss of a
  mechanical resonator and cavity mode in an optomechanical system

abstract:
  We theoretically study a strongly-driven optomechanical system which consists
of a passive optical cavity and an active mechanical resonator. When the
optomechanical coupling strength is varied, phase transitions, which are
similar those observed in $\mathcal{PT}$-symmetric systems, are observed. We
show that the optical transmission can be controlled by changing the gain of
the mechanical resonator and loss of the optical cavity mode. Especially, we
find that: (i) for balanced gain and loss, optical amplification and absorption
can be tuned by changing the optomechanical coupling strength through a control
field; (ii) for unbalanced gain and loss, even with a tiny mechanical gain,
both optomechanically-induced transparency and anomalous dispersion can be
observed around a critical point, which exhibits an ultra-long group delay. The
time delay $\tau$ can be optimized by regulating the optomechanical coupling
strength through the control field and improved up to several orders of
magnitude ($\tau\sim2$ $\mathrm{ms}$) compared to that of conventional
optomechanical systems ($\tau\sim1$ $\mu\mathrm{s}$). The presence of
mechanical gain makes the group delay more robust to environmental
perturbations. Our proposal provides a powerful platform to control light
transport using a $\mathcal{PT}$-symmetric-like optomechanical system.


title:
Performance Analysis of CSMA with Multi-Packet Reception: The
  Inhomogeneous Case

abstract:
  The problem of Carrier Sense Multiple Access (CSMA) with multi-packet
reception (MPR) is studied. Most prior work has focused on the homogeneous
case, where all the mobile users are assumed to have identical packet arrival
rates and transmission probabilities. The inhomogeneous case remains largely
open in the literature. In this work, we make a first step towards this open
problem by deriving throughput and delay expressions for inhomogeneous CSMA,
with a particular focus on a family of MPR models called the "all-or-nothing"
symmetric MPR. This family of MPR models allows us to overcome several
technical challenges associated with conventional analysis and to derive
accurate throughput and delay expressions in the large-systems regime.
Interestingly, this family of MPR models is still general enough to include a
number of useful MPR techniques - such as successive interference cancellation
(SIC), compute-and-forward (C&F), and successive compute-and-forward (SCF) - as
special cases. Based on these throughput and delay expressions, we provide
theoretical guidelines for meeting quality-of-service requirements and for
achieving global stability; we also evaluate the performances of various MPR
techniques, highlighting the clear advantages offered by SCF.


title:
On Riemann's Paper, "On the Number of Primes Less Than a Given
  Magnitude"

abstract:
  This paper is devoted to one of the members of the G\"ottingen triumvirate,
Gau{\ss}, Dirichlet and Riemann. It is the latter to whom I wish to pay
tribute, and especially to his world-famous article of 1859, which he presented
in person at the Berlin Academy upon his election as a corresponding member.
His article, entitled, "Uber die Anzahl der Primzahlen unter einer gegebenen
Gr\"o{\ss}e" ("On the Number of Primes Less Than a Given Magnitude"),
revolutionized mathematics worldwide. Included in the present paper is a
detailed analysis of Riemann's article, including such novel concepts as
analytical continuation in the complex plane; the product formula for entire
functions; and, last but not least, a detailed study of the zeros of the
so-called Riemann zeta function and its close relation to determining the
number of primes up to a given magnitude, i.e., an explicit formula for the
prime counting function.


title:
Soft Recovery Through $\ell_{1,2}$ Minimization with Applications in
  Recovery of Simultaneously Sparse and Low-Rank Matrice

abstract:
  This article provides a new type of analysis of a compressed-sensing based
technique for recovering column-sparse matrices, namely minimization of the
$\ell_{1,2}$-norm. Rather than providing conditions on the measurement matrix
which guarantees the solution of the program to be exactly equal to the ground
truth signal (which already has been thoroughly investigated), it presents a
condition which guarantees that the solution is approximately equal to the
ground truth. Soft recovery statements of this kind are to the best knowledge
of the author a novelty in Compressed Sensing. Apart from the theoretical
analysis, we present two heuristic proposes how this property of the
$\ell_{1,2}$-program can be utilized to design algorithms for recovery of
matrices which are sparse and have low rank at the same time.


title:
Divisorial extractions from singular curves in a smooth 3-fold, II: low
  codimension

abstract:
  Following the first paper, we continue to study Mori extractions from
singular curves centred in a smooth 3-fold. We treat the case where the
divisorial extraction exists in relative codimension at most 3.


title:
Mapping the effect of defect-induced strain disorder on the Dirac states
  of topological insulators

abstract:
  We provide a detailed microscopic characterization of the influence of
defects-induced disorder onto the Dirac spectrum of three dimensional
topological insulators. By spatially resolved Landau-levels spectroscopy
measurements, we reveal the existence of nanoscale fluctuations of both the
Dirac point energy as well as of the Dirac-fermions velocity which is found to
spatially change in opposite direction for electrons and holes, respectively.
These results evidence a scenario which goes beyond the existing picture based
on chemical potential fluctuations. The findings are consistently explained by
considering the microscopic effects of local stain introduced by defects, which
our model calculations show to effectively couple to topological states,
reshaping their Dirac-like dispersion over a large energy range. In particular,
our results indicate that the presence of microscopic spatially varying stain,
inevitably present in crystals because of the random distribution of defects,
effectively couple to topological states and should be carefully considered for
correctly describing the effects of disorder.


title: Survey of Consistent Software-Defined Network Updates

abstract:
  Computer networks have become a critical infrastructure. In fact, networks
should not only meet strict requirements in terms of correctness, availability,
and performance, but they should also be very flexible and support fast
updates, e.g., due to policy changes, increasing traffic, or failures. This
paper presents a structured survey of mechanism and protocols to update
computer networks in a fast and consistent manner. In particular, we identify
and discuss the different desirable consistency properties that should be
provided throughout a network update, the algorithmic techniques which are
needed to meet these consistency properties, and the implications on the speed
and costs at which updates can be performed. We also explain the relationship
between consistent network update problems and classic algorithmic optimization
ones. While our survey is mainly motivated by the advent of Software-Defined
Networks (SDNs) and their primary need for correct and efficient update
techniques, the fundamental underlying problems are not new, and we provide a
historical perspective of the subject as well.


title: Symmetric products of a semistable degeneration of surfaces

abstract:
  We explicitly construct a $V$-normal crossing Gorenstein canonical model of
the relative symmetric products of a local semistable degeneration of surfaces
without a triple point by means of toric geometry. Using this model, we
calculate the stringy $E$-polynomial of the relative symmetric product. We also
construct a minimal model of degeneration of Hilbert schemes explicitly.


title: Residual Non-Abelian Dark Matter and Dark Radiation

abstract:
  We propose a novel particle physics model in which vector dark matter (VDM)
and dark radiation (DR) originate from the same non-Abelian dark sector. We
show an illustrating example where dark $SU(3)$ is spontaneously broken into
$SU(2)$ subgroup by the nonzero vacuum expectation value of a complex scalar in
fundamental representation of $SU(3)$. The massless gauge bosons associated
with the residual unbroken $SU(2)$ constitute DR and help to relieve the
tension in Hubble constant measurements between $\textit{Planck}$ and Hubble
Space Telescope. In the meantime, massive dark gauge bosons associated with the
broken generators are VDM candidates. Intrinsically, this non-Abelian VDM can
interact with non-Abelian DR in the cosmic background, which results in a
suppressed matter power spectrum and leads to a smaller $\sigma_8$ for
structure formation.


title: Braun-Le Chatelier principle in dissipative thermodynamics

abstract:
  Braun-Le Chatelier principle is a fundamental result of equilibrium
thermodynamics, showing how stable equilibrium states shift when external
conditions are varied. The principle follows from convexity of thermodynamic
potential. Analogously, from convexity of dissipation potential it follows how
steady non-equilibrium states shift when thermodynamic forces are varied, which
is the extension of the principle to dissipative thermodynamics.


title: Properties of Hamiltonian Variational Integrators

abstract:
  Discrete Hamiltonian variational integrators are derived from Type II and
Type III generating functions for symplectic maps, and in this paper we
establish a variational error analysis result that relates the order of
accuracy of the associated numerical methods with the extent to which these
generating functions approximate the exact discrete Hamiltonians. We also
introduce the notion of an adjoint discrete Hamiltonian, and relate it to the
adjoint of the associated symplectic integrator. We show that when constructing
discrete Lagrangians and discrete Hamiltonians using the Taylor variational
integrator approach, the same underlying one-step method and quadrature rule
does not necessarily lead to the same symplectic integrator, and the same
observation holds when developing variational integrators based on averaging
techniques. Numerical experiments also indicate that the resonance behavior of
variational integrators also depend on the type of generating functions used,
and we relate this resonance behavior to the ill-posedness of the
boundary-value problems used to define the exact discrete Lagrangian and exact
discrete Hamiltonian.


title:
The Probability of Primeness for Specially Structured Polynomial
  Matrices over Finite Fields with Applications to Linear Systems and
  Convolutional Codes

abstract:
  We calculate the probability that random polynomial matrices over a finite
field with certain structures are right prime or left prime, respectively. In
particular, we give an asymptotic formula for the probability that finitely
many nonsingular polynomial matrices are mutually left coprime. These results
are used to estimate the number of reachable and observable linear systems as
well as the number of non-catastrophic convolutional codes. Moreover, we are
able to achieve an asymptotic formula for the probability that a parallel
connected linear system is reachable.


title: NUV signatures of environment driven galaxy quenching in SDSS groups

abstract:
  We have investigated the effect of group environment on residual star
formation in galaxies, using Galex NUV galaxy photometry with the SDSS group
catalogue of Yang et al. (2007). We compared the (NUV $- r$) colours of grouped
and non-grouped galaxies, and find a significant increase in the fraction of
red sequence galaxies with blue (NUV $- r$) colours outside of groups. When
comparing galaxies in mass matched samples of satellite (non-central), and
non-grouped galaxies, we found a > 4{\sigma} difference in the distribution of
(NUV $- r$) colours, and an (NUV $- r$) blue fraction $> 3{\sigma}$ higher
outside groups. A comparison of satellite and non-grouped samples has found the
NUV fraction is a factor of $\sim2$ lower for satellite galaxies between
$10^{10.5}M_{\bigodot}$ and $10^{10.7}M_{\bigodot}$, showing that higher mass
galaxies are more able to form stars when not influenced by a group potential.
There was a higher (NUV $- r$) blue fraction of galaxies with lower Sersic
indices (n < 3) outside of groups, not seen in the satellite sample. We have
used stellar population models of Bruzual & Charlot (2003) with multiple burst,
or exponentially declining star formation histories to find that many of the
(NUV $- r$) blue non-grouped galaxies can be explained by a slow ($\sim 2$ Gyr)
decay of star formation, compared to the satellite galaxies. We suggest that
taken together, the difference in (NUV $- r$) colours between samples can be
explained by a population of secularly evolving, non-grouped galaxies, where
star formation declines slowly. This slow channel is less prevalent in group
environments where more rapid quenching can occur.


title: Charting the Parameter Space of the Global 21-cm Signal

abstract:
  The early star-forming Universe is still poorly constrained, with the
properties of high-redshift stars, the first heating sources, and reionization
highly uncertain. This leaves observers planning 21-cm experiments with little
theoretical guidance. In this work we explore the possible range of
high-redshift parameters including the star formation efficiency and the
minimal mass of star-forming halos; the efficiency, spectral energy
distribution, and redshift evolution of the first X-ray sources; and the
history of reionization. These parameters are only weakly constrained by
available observations, mainly the optical depth to the cosmic microwave
background. We use realistic semi-numerical simulations to produce the global
21-cm signal over the redshift range $z = 6-40$ for each of 193 different
combinations of the astrophysical parameters spanning the allowed range. We
show that the expected signal fills a large parameter space, but with a fixed
general shape for the global 21-cm curve. Even with our wide selection of
models we still find clear correlations between the key features of the global
21-cm signal and underlying astrophysical properties of the high redshift
Universe, namely the Ly$\alpha$ intensity, the X-ray heating rate, and the
production rate of ionizing photons. These correlations can be used to directly
link future measurements of the global 21-cm signal to astrophysical quantities
in a mostly model-independent way. We identify additional correlations that can
be used as consistency checks.


title:
Pathophysiological Domains Underlying the Metabolic Syndrome: An
  Alternative Factor Analytic Strategy

abstract:
  Purpose: Factor analysis (FA) has become part and parcel in metabolic
syndrome (MBS) research. Both exploration- and confirmation-driven factor
analyzes are rampant. However, factor analytic results on MBS differ widely. A
situation that is at least in part attributable to misapplication of FA. Here,
our purpose is (i) to review factor analytic efforts in the study of MBS with
emphasis on misusage of the FA model and (ii) to propose an alternative factor
analytic strategy.
  Methods: The proposed factor analytic strategy consists of four steps and
confronts weaknesses in application of the FA model. At its heart lies the
explicit separation of dimensionality and pattern selection as well as the
direct evaluation of competing inequality-constrained loading patterns. A
high-profile MBS data set with anthropometric measurements on overweight
children and adolescents is reanalyzed using this strategy.
  Results: The reanalysis implied a more parsimonious constellation of
pathophysiological domains underlying phenotypic expressions of MBS than the
original analysis (and many other analyzes). The results emphasize correlated
factors of impaired glucose metabolism and impaired lipid metabolism.
  Conclusions: Pathophysiological domains underlying phenotypic expressions of
MBS included in the analysis are driven by multiple interrelated metabolic
impairments. These findings indirectly point to the possible existence of a
multifactorial aetiology.


title:
The Number of Irreducible Polynomials with the First Two Coefficients
  Fixed over Finite Fields of Odd Characteristic

abstract:
  In this paper we give a different proof of Kuz'min's result on the number of
irreducible polynomials with the first two coefficients fixed. Our technique is
to relate the question to the number of points on a curve, and to calculate the
L-polynomial of the curve.


title: Index of the critical catenoid

abstract:
  In this article, we show that the critical catenoid, as a free boundary
minimal surface of the unit ball in $\mathbb{R}^3$, has index $4$. We also
prove that a free boundary minimal surface of the unit ball in $\mathbb{R}^3$,
that is not a flat disk, has index at least $4$.


title: Ms. Pac-Man Versus Ghost Team CIG 2016 Competition

abstract:
  This paper introduces the revival of the popular Ms. Pac-Man Versus Ghost
Team competition. We present an updated game engine with Partial Observability
constraints, a new Multi-Agent Systems approach to developing Ghost agents and
several sample controllers to ease the development of entries. A restricted
communication protocol is provided for the Ghosts, providing a more challenging
environment than before. The competition will debut at the IEEE Computational
Intelligence and Games Conference 2016. Some preliminary results showing the
effects of Partial Observability and the benefits of simple communication are
also presented.


title:
Thermal and magnetic phase transition properties of a binary alloy
  spherical nanoparticle: A Monte Carlo simulation study

abstract:
  We have used the Monte Carlo (MC) simulation method with Metropolis algorithm
to study the finite temperature phase transition properties of a binary alloy
spherical nanoparticle with radius $r$ of the type $A_{p}B_{1-p}$. The system
consists of two different species of magnetic components, namely, $A$ and $B$,
and the components of the system have been selected $A$ and $B$ to be as
$\sigma = 1/2$ and $S=1$, respectively. A complete picture of phase diagrams,
total magnetizations and susceptibilities in related planes have been
presented, and the main roles of the radius of nanoparticle, active
concentration value of type-$A$ atoms as well as other system parameters on the
thermal and magnetic phase transition features of the considered system have
been discussed in detail. Our MC investigations clearly show that it is
possible to control the critical characteristic behaviors of the system with
the help of adjustable Hamiltonian parameters.


title:
Capacity Lower Bounds of the Noncentral Chi-Channel with Applications to
  Soliton Amplitude Modulation

abstract:
  The channel law for amplitude-modulated solitons transmitted through a
nonlinear optical fibre with ideal distributed amplification and a receiver
based on the nonlinear Fourier transform is a noncentral chi-distribution with
$2n$ degrees of freedom, where $n=2$ and $n=3$ correspond to the single- and
dual-polarisation cases, respectively. In this paper, we study capacity lower
bounds of this channel under an average power constraint in bits per channel
use. We develop an asymptotic semi-analytic approximation for a capacity lower
bound for arbitrary $n$ and a Rayleigh input distribution. It is shown that
this lower bound grows logarithmically with signal-to-noise ratio (SNR),
independently of the value of $n$. Numerical results for other continuous input
distributions are also provided. A half-Gaussian input distribution is shown to
give larger rates than a Rayleigh input distribution for $n=1,2,3$. At an SNR
of $25$ dB, the best lower bounds we developed are approximately $3.68$ bit per
channel use. The practically relevant case of amplitude shift-keying (ASK)
constellations is also numerically analysed. For the same SNR of $25$ dB, a
$16$-ASK constellation yields a rate of approximately $3.45$ bit per channel
use.


title: Pumping dynamics of nuclear spins in GaAs quantum wells

abstract:
  Irradiating a semiconductor with circularly polarized light creates
spin-polarized charge carriers. If the material contains atoms with non-zero
nuclear spin, they interact with the electron spins via the hyperfine coupling.
Here, we consider GaAs/AlGaAs quantum wells, where the conduction-band electron
spins interact with three different types of nuclear spins. The hyperfine
interaction drives a transfer of spin polarization to the nuclear spins, which
therefore acquire a polarization that is comparable to that of the electron
spins. In this paper, we analyze the dynamics of the optical pumping process in
the presence of an external magnetic field while irradiating a single quantum
well with a circularly polarized laser. We measure the time dependence of the
photoluminescence polarization to monitor the buildup of the nuclear spin
polarization and thus the average hyperfine interaction acting on the electron
spins. We present a simple model that adequately describes the dynamics of this
process and is in good agreement with the experimental data.


title:
Distributed agent-based automated theorem proving in order-sorted
  first-order logic

abstract:
  This paper presents a distributed agent-based automated theorem proving
framework based on order-sorted first-order logic. Each agent in our framework
has its own knowledge base, communicating to its neighboring agent(s) using
message-passing algorithms. The communication language between agents is
restricted in such a manner that each agent can only communicate to its
neighboring agent(s) by means of their common language. In this paper we
provide a refutation-complete report procedure for automated theorem proving in
order-sorted first-order logic in a subclass of distributed agent-based
networks. Rather than studying and evaluating the performance improvement of
the automated theorem proving in order-sorted first-order logic using parallel
or distributed agents, this paper focuses on building proofs in order-sorted
first-order logic in a distributed manner under the restriction that agents may
report their knowledge or observations only with their predefined language.


title: Quantum groups based on spatial partitions

abstract:
  We define new compact matrix quantum groups whose intertwiner spaces are dual
to tensor categories of three-dimensional set partitions -- which we call
spatial partitions. This extends substantially Banica and Speicher's approach
of the so called easy quantum groups: It enables us to find new examples of
quantum subgroups of Wang's free orthogonal quantum group $O_n^+$ which do not
contain the symmetric group $S_n$; we may define new kinds of products of
quantum groups coming from new products of categories of partitions; and we
give a quantum group interpretation of certain categories of partitions which
do neither contain the pair partition nor the identity partition.


title:
Classical and Quantum Mechanics with Lie Brackets and Pseudocanonical
  Transformations

abstract:
  We emphasize the usefulness of the Lie brackets in the context of classical
and quantum mechanics. By way of examples we show that many dynamical systems,
especially the ones with (gauge) constraints, can equally be treated in their
time development with non-canonical variables and Hamiltonians. After a short
presentation of the Lie bracket algebra and treating some easier standard
problems with the Lie bracket techniques, we concentrate mainly on charged
particles with gauge constraint in a constant external magnetic field. Since
most of our quantum field theories are meanwhile considered effective, we have
purposely treated our final problems with $c$-number instead of field -operator
Lagrangians. The van Vleck determinant, which is exact for our problems, is
employed to calculate the $c$-number Feynman-Schwinger propagation function.
There is no need for operators or renormalization. In particular, the
non-relativistic propagator in $2+1$ dimensions and the more complicated one in
$3+1$ dimensions are presented in all their glorious detail. On the more
editorial side: we have dispensed with numerating the various problems. They
are not so much disjoint that they needed an extra title. Also, the article is
written in a self-consistent way, meaning one should be able to read it without
time-consuming research in textbooks and journals - with a few exceptions, in
particular Schwinger's paper [J. Schwinger, Phys. Rev. 82, 664 (1951)], which
is the most-cited paper in modern quantum-field-theory physics. Most of the
prerequisites for reading the present article can be found in extenso in [W.
Dittrich and M. Reuter, Classical and quantum dynamics (Springer, Berlin,
Germany, 2016)].


title:
Casimir effect on the lattice: U(1) gauge theory in two spatial
  dimensions

abstract:
  We propose a general numerical method to study the Casimir effect in lattice
gauge theories. We illustrate the method by calculating the energy density of
zero-point fluctuations around two parallel wires of finite static permittivity
in Abelian gauge theory in two spatial dimensions. We discuss various subtle
issues related to the lattice formulation of the problem and show how they can
successfully be resolved. Finally, we calculate the Casimir potential between
the wires of a fixed permittivity, extrapolate our results to the limit of
ideally conducting wires and demonstrate excellent agreement with a known
theoretical result.


title:
Routing-Verification-as-a-Service (RVaaS): Trustworthy Routing Despite
  Insecure Providers

abstract:
  Computer networks today typically do not provide any mechanisms to the users
to learn, in a reliable manner, which paths have (and have not) been taken by
their packets. Rather, it seems inevitable that as soon as a packet leaves the
network card, the user is forced to trust the network provider to forward the
packets as expected or agreed upon. This can be undesirable, especially in the
light of today's trend toward more programmable networks: after a successful
cyber attack on the network management system or Software-Defined Network (SDN)
control plane, an adversary in principle has complete control over the network.
  This paper presents a low-cost and efficient solution to detect misbehaviors
and ensure trustworthy routing over untrusted or insecure providers, in
particular providers whose management system or control plane has been
compromised (e.g., using a cyber attack). We propose
Routing-Verification-as-a-Service (RVaaS): RVaaS offers clients a flexible
interface to query information relevant to their traffic, while respecting the
autonomy of the network provider. RVaaS leverages key features of
OpenFlow-based SDNs to combine (passive and active) configuration monitoring,
logical data plane verification and actual in-band tests, in a novel manner.


title:
B(E2) anomaly in $6^+$ isomers of $^{134-138}$Sn isotopes and neutron
  single-particle energies beyond N=82

abstract:
  Isomeric studies in neutron-rich nuclei present a powerful tool to explore
the structure at the nuclear extremes. We recently used the shell model
calculations with Renormalized Charge Depen- dent Bonn (RCDB) effective
interaction to calculate the properties of the $6^+$ seniority isomers in
$^{134-138}$Sn in an attempt to resolve the anomalous B(E2) behavior of the
$6^+$ isomer in $^{136}$Sn [Phys. Rev. C 91, 024321 (2015)]. We further explore
these isomers by using the generalized seniority scheme for multi-j orbitals
recently presented by us [Phys. Lett. B 753, 122 (2016)]; the B(E2) values so
calculated reproduce the experimental data quite well, including the anomaly at
$^{136}$Sn confirming the generalized seniority nature of the $6^+$ isomers. We
then use the generalized seniority guided Large Scale Shell Model (LSSM)
calculations, along with the latest single particle energies from Jones et al :
[Nature (London) 465, 454 (2010)] and Allmond et al : [Phys. Rev. Lett. 112,
172701 (2014)] to estimate more accurate location of i$_{13/2}$ neutron orbital
in the extreme neutron rich N = 82-126 region. This entails a new sub-shell
closure at N = 112 due to the higher location of i$_{13/2}$ neutron orbital,
also consistent with the choice of orbitals in the generalized seniority
scheme. However, a small reduction in the f$_{7/2}$ two-body matrix elements is
still required in the LSSM calculations to reproduce the experimental level
energies as well as the transition probabilities in $^{134-138}$Sn isotopes in
a consistent way.


title: Batalin-Vilkovisky formalism as a theory of integration for polyvectors

abstract:
  The Batalin-Vilkovisky (BV) formalism is a powerful generalization of the
BRST approach of gauge theories and allows to treat more general field
theories. We will see how, starting from the case of a finite dimensional
configuration space, we can see this formalism as a theory of integration for
polyvectors over the shifted cotangent bundle of the configuration space, and
arrive at a formula that admits a generalization to the infinite dimensional
case. The process of gauge fixing and the observables of the theory will be
presented.


title: Dust grains from the heart of supernovae

abstract:
  Dust grains are classically thought to form in the winds of asymptotic giant
branch (AGB) stars. However, there is increasing evidence today for dust
formation in supernovae (SNe). To establish the relative importance of these
two classes of stellar sources of dust, it is important to know the fraction of
freshly formed dust in SN ejecta that is able to survive the passage of the
reverse shock and be injected in the interstellar medium. We have developed a
new code (GRASH\_Rev) which follows the newly-formed dust evolution throughout
the supernova explosion until the merging of the forward shock with the
circumstellar ISM. We have considered four well studied SNe in the Milky Way
and Large Magellanic Cloud: SN1987A, CasA, the Crab Nebula, and N49. For all
the simulated models, we find good agreement with observations and estimate
that between 1 and 8$\%$ of the observed mass will survive, leading to a SN
dust production rate of $(3.9 \pm 3.7) \times 10^{-4}$ M$_{\odot}$yr$^{-1}$ in
the Milky Way. This value is one order of magnitude larger than the dust
production rate by AGB stars but insufficient to counterbalance the dust
destruction by SNe, therefore requiring dust accretion in the gas phase.


title: Spatiotemporal Structure of Aeolian Particle Transport on Flat Surface

abstract:
  We conduct numerical simulations based on a model of blowing snow to reveal
the long-term properties and equilibrium state of aeolian particle transport
from $10^{-5} \hspace{0.5 ex} \mathrm{m}$ to $10 \hspace{0.5 ex} \mathrm{m}$
above the flat surface. The numerical results are as follows. (i) Time-series
data of particle transport are divided into development, relaxation, and
equilibrium phases, which are formed by rapid wind response below $10
\hspace{0.5 ex} \mathrm{cm}$ and gradual wind response above $10 \hspace{0.5
ex} \mathrm{cm}$. (ii) The particle transport rate at equilibrium is expressed
as a power function of friction velocity, and the index of 2.35 implies that
most particles are transported by saltation. (iii) The friction velocity below
$100 \hspace{0.5 ex} \mu\mathrm{m}$ remains roughly constant and lower than the
fluid threshold at equilibrium. (iv) The mean particle speed above $300
\hspace{0.5 ex} \mu\mathrm{m}$ is less than the wind speed, whereas that below
$300 \hspace{0.5 ex} \mu\mathrm{m}$ exceeds the wind speed because of
descending particles. (v) The particle diameter increases with height in the
saltation layer, and the relationship is expressed as a power function. Through
comparisons with the previously reported random-flight model, we find a crucial
problem that empirical splash functions cannot reproduce particle dynamics at a
relatively high wind speed.


title:
Routing protocol for wireless quantum multi-hop Mesh backbone network
  based on partially entangled GHZ state

abstract:
  Quantum multi-hop teleportation is important in the field of quantum
communication. In this study, we propose a quantum multi-hop communication
model and a quantum routing protocol with multi-hop teleportation for wireless
mesh backbone networks. Based on an analysis of quantum multi-hop protocols, a
partially entangled Greenberger--Horne--Zeilinger (GHZ) state is selected as
the quantum channel for the proposed protocol. Both quantum and classical
wireless channels exist between two neighboring nodes along the route. With the
proposed routing protocol, quantum information can be transmitted hop by hop
from the source node to the destination node. Based on multi-hop teleportation
based on the partially entangled GHZ state, a quantum route established with
the minimum number of hops. The difference between our routing protocol and the
classical one is that in the former, the processes used to find a quantum route
and establish quantum channel entanglement occur simultaneously. The Bell state
measurement results of each hop are piggybacked to quantum route finding
information. This method reduces the total number of packets and the magnitude
of air interface delay. The deduction of the establishment of a quantum channel
between source and destination is also presented here. The final success
probability of quantum multi-hop teleportation in wireless mesh backbone
networks was simulated and analyzed. Our research shows that quantum multi-hop
teleportation in wireless mesh backbone networks through a partially entangled
GHZ state is feasible.


title: Charge-induced optical bistability in thermal Rydberg vapor

abstract:
  We investigate the phenomenon of optical bistability in a driven ensemble of
Rydberg atoms. By performing two experiments with thermal vapors of rubidium
and cesium, we are able to shed light onto the underlying interaction
mechanisms causing such a non-linear behavior. Due to the different properties
of these two atomic species, we conclude that the large polarizability of
Rydberg states in combination with electric fields of spontaneously ionized
Rydberg atoms is the relevant interaction mechanism. In the case of rubidium,
we directly measure the electric field in a bistable situation via two-species
spectroscopy. In cesium, we make use of the different sign of the
polarizability for different l-states and the possibility of applying electric
fields. Both these experiments allow us to rule out dipole-dipole interactions,
and support our hypothesis of a charge-induced bistability.


title: Pleijel's nodal domain theorem for Neumann and Robin eigenfunctions

abstract:
  In this paper, we show that equality in Courant's nodal domain theorem can
only be reached for a finite number of eigenvalues of the Neumann Laplacian, in
the case of an open, bounded and connected set in R n with a C 1,1 boundary.
This result is analogous to Pleijel's nodal domain theorem for the Dirichlet
Laplacian (1956). It confirms, in all dimensions, a conjecture formulated by
Pleijel, which had already been solved by I. Polterovich for a two-dimensional
domain with a piecewise-analytic boundary (2009). We also show that the
argument and the result extend to a class of Robin boundary conditions.


title: The scattering operator on asymptotically hyperbolic manifolds

abstract:
  We obtain a formula for the Schwartz kernel of the scattering operator in
terms of the Schwartz kernel of the fundamental solution of the wave operator
on asymptotically hyperbolic manifolds. If there are no trapped geodesics, this
formula is used to show that the scattering operator is a Fourier integral
operator that quantizes the scattering relation.


title:
Optical and Ultraviolet Observations of the Very Young Type IIP SN
  2014cx in NGC 337

abstract:
  Extensive photometric and spectroscopic observations are presented for SN
2014cx, a type IIP supernova (SN) exploding in the nearby galaxy NGC 337. The
observations are performed in optical and ultraviolet bands, covering from -20
to +400 days from the peak light. The stringent detection limit from
prediscovery images suggests that this supernova was actually detected within
about 1 day after explosion. Evolution of the very early-time light curve of SN
2014cx is similar to that predicted from a shock breakout and post-shock
cooling decline before reaching the optical peak. Our photometric observations
show that SN 2014cx has a plateau duration of ~ 100 days, an absolute V-band
magnitude of ~ -16.5 mag at t~50 days, and a nickel mass of 0.056+-0.008 Msun.
The spectral evolution of SN 2014cx resembles that of normal SNe IIP like SN
1999em and SN 2004et, except that it has a slightly higher expansion velocity
(~ 4200 km/s at 50 days). From the cooling curve of photospheric temperature,
we derive that the progenitor has a pre-explosion radius of ~ 640 Rsun,
consistent with those obtained from SNEC modeling (~ 620 Rsun) and
hydrodynamical modeling of the observables (~ 570 Rsun). Moreover, the
hydrodynamical simulations yield a total explosion energy of ~ 0.4*10e51 erg,
and an ejected mass of ~ 8 Msun. These results indicate that the immediate
progenitor of SN 2014cx is likely a red supergiant star with a mass of ~ 10
Msun.


title: The interaction between trade and FDI: the CEE countries experience

abstract:
  Inside the EU, the commercial integration of the CEE countries has gained
remarkable momentum before the crisis appearance, but it has slightly slowed
down afterwards. Consequently, the interest in identifying the factors
supporting the commercial integration process is high. Recent findings in the
new trade theory suggest that FDI influence the trade intensity but the studies
approaching this relationship for the CEE countries present mixed evidence, and
investigate the commercial integration of CEE countries with the old EU
members. Against this background, the purpose of this paper is to assess the
CEE countries' intra-integration, focusing on the Czech Republic, Hungary,
Poland and the Slovak Republic. For each country we employ a panel
gravitational model for the bilateral trade and FDI, considering its
interactions with the other three countries in the sample on the one hand, and
with the three EU main commercial partners on the other hand. We investigate
different facets of the trade -- FDI nexus, resorting to a fixed effects model,
a random effects model, as well as to an instrumental variable estimator, over
the period 2000-2013. Our results suggest that outward FDI sustains the CEE
countries' commercial integration, while inward FDI has no significant effect.
In all the cases a complementarity effect between trade and FDI is documented,
which is stronger for the CEE countries' historical trade partners.
Consequently, these findings show that CEE countries' policymakers are
interested in encouraging the outward FDI toward their neighbour countries in
order to increase the commercial integration.


title:
Mysterious dimensionality effect: the cancellation of the $N$-coboson
  correlation energy under a BCS-like potential

abstract:
  We use Richardson-Gaudin exact equations to derive the ground-state energy of
$N$ composite bosons (cobosons) interacting via a potential which acts between
fermion pairs having zero center-of-mass momentum, that is, a potential similar
to the reduced BCS potential used in conventional superconductivity. Through a
density expansion, we show that while, for 2D systems, the $N$-coboson
correlation energy undergoes a surprising cancellation which leaves the
interaction part with a $N(N-1)$ dependence only, such a cancellation does not
exist in 1D, 3D, and 4D systems --- which corresponds to 2D parabolic traps ---
nor when the cobosons interact via a similar short-range potential but between
pairs having an arbitrary center-of-mass momentum. This shows that the
previously-found cancellation which exists for the Cooper-pair correlation
energy results not only from the very peculiar form of the reduced BCS
potential, but also from a quite mysterious dimensionality effect, the density
of states for Cooper pairs feeling the BCS potential being essentially
constant, as for 2D systems.


title: A new view on the maximum mass of differentially rotating neutron stars

abstract:
  We study the main astrophysical properties of differentially rotating neutron
stars described as stationary and axisymmetric configurations of a moderately
stiff $\Gamma=2$ polytropic fluid. The high level of accuracy and of stability
of our relativistic multidomain pseudo-spectral code enables us to explore the
whole solution space for broad ranges of the degree of differential rotation,
but also of the stellar density and oblateness. Staying within an
astrophysicaly motivated range of rotation profiles, we investigate the
characteristics of neutron stars with maximal mass for all types of families of
differentially rotating relativistic objects identified in a previous article
Ansorg, Gondek-Rosinsla, Villain (2009). We find that the maximum mass depends
on both the degree of differential rotation and on the type of solution. It
turns out that the maximum allowed mass can be up to 4 times higher than what
it is for non-rotating stars with the same equation of state. Such values are
obtained for a modest degree of differential rotation but for one of the newly
discovered type of solutions. Since such configurations of stars are not that
extreme, this result may have important consequences for the gravitational wave
signal to expect from coalescing neutron star binaries or from some supernovae
events.


title: $T^3$-interferometer for atoms

abstract:
  The quantum mechanical propagator of a massive particle in a linear
gravitational potential derived already in 1927 by Earle H. Kennard
\cite{Kennard,Kennard2} contains a phase that scales with the third power of
the time $T$ during which the particle experiences the corresponding force.
Since in conventional atom interferometers the internal atomic states are all
exposed to the same acceleration $a$, this $T^3$-phase cancels out and the
interferometer phase scales as $T^2$. In contrast, by applying an external
magnetic field we prepare two different accelerations $a_1$ and $a_2$ for two
internal states of the atom, which translate themselves into two different
cubic phases and the resulting interferometer phase scales as $T^3$. We present
the theoretical background for, and summarize our progress towards
experimentally realizing such a novel atom interferometer.


title:
Designing in-plane heterostructures of quantum spin hall insulators from
  first principles: 1T'-MoS2 with adsorbates

abstract:
  Interfaces between normal and topological insulators are bound to host
metallic states that are protected by time-reversal symmetry and are therefore
robust against disorder and interface reconstruction. Two-dimensional
topological insulators (quantum spin Hall insulators) offer a unique
opportunity to change the local topology by adsorption of atoms or molecules
and thus comprise an ideal platform for designing topological heterostructures.
Here, we apply first principles calculations to show that the quantum spin Hall
insulator 1T'-MoS2 exhibits a phase transition to a trivial insulator upon
adsorption of various atoms. It is then demonstrated that one-dimensional
metallic boundary states indeed arise in a ribbon geometry of alternating
regions with and without adsorbed oxygen and that these boundary states
generically constitute simple linear connections between valence and conduction
bands. This is in sharp contrast to topological edge states that typically
exhibit strong dispersion that are sensitively to a particular edge
termination. The heterostructure is also suggestive of a simple design of
one-dimensional metallic networks in sheets of 1T'-MoS2.


title:
A short review and primer on online processing of multiple signal
  sources in human computer interaction applications

abstract:
  The application of psychophysiological in human-computer interaction is a
growing field with significant potential for future smart personalised systems.
Working in this emerging field requires comprehension of an array of
physiological signals and analysis techniques.
  Stream processing sytems (SPS) are emerging computational platforms that can
be utilized in human-computer interaction for real-time analysis of high-volume
multimodal signals. Usage of complementary information contained in multiple
signals is desireable as it can make HCI systems more robust. In this preprint
we review existing software and hardware solutions for HCI-centric stream
processing systems. The preprint also includes a brief introduction into SPS
design considerations and structure from the perspective of analysing
physiological signals.
  This paper aims to serve as a primer for the novice, enabling rapid
familiarisation with the latest core concepts. We put special emphasis on
everyday human-computer interface applications to distinguish from the more
common clinical or sports uses of psychophysiology.
  This paper is an extract from a comprehensive review of the entire field of
ambulatory psychophysiology, including 12 similar chapters, plus application
guidelines and systematic review. Thus any citation should be made using the
following reference: B. Cowley, M. Filetti, K. Lukander, J. Torniainen, A.
Henelius, L. Ahonen, O. Barral, I. Kosunen, T. Valtonen, M. Huotilainen, N.
Ravaja, G. Jacucci. The Psychophysiology Primer: a guide to methods and a broad
review with a focus on human-computer interaction. Foundations and Trends in
Human-Computer Interaction, vol. 9, no. 3-4, pp. 150--307, 2016.


title:
Representations of hypergeometric functions for arbitrary parameter
  values and their use

abstract:
  Integral representations of hypergeometric functions proved to be a very
useful tool for studying their properties. The purpose of this paper is
twofold. First, we extend the known representations to arbitrary values of the
parameters and show that the extended representations can be interpreted as
examples of regularizations of integrals containing Meijer's $G$ function.
Second, we give new applications of both, known and extended representations.
These include: inverse factorial series expansion for the Gauss type function,
new information about zeros of the Bessel and Kummer type functions, connection
with radial positive definite functions and generalizations of Luke's
inequalities for the Kummer and Gauss type functions.


title:
Quasi-particle random phase approximation with quasi-particle-vibration
  coupling: application to the Gamow-Teller response of the superfluid nucleus
  $^{120}$Sn

abstract:
  We propose a self-consistent quasi-particle random phase approximation (QRPA)
plus quasi-particle-vibration coupling (QPVC) model with Skyrme interactions to
describe the width and the line shape of giant resonances in open-shell nuclei,
in which the effect of superfluidity should be taken into account in both the
ground state and the excited states. We apply the new model to the Gamow-Teller
resonance in the superfluid nucleus $^{120}$Sn, including both the isoscalar
spin-triplet and the isovector spin-singlet pairing interactions. The strength
distribution in $^{120}$Sn is well reproduced and the underlying microscopic
mechanisms, related to QPVC and also to isoscalar pairing, are analyzed in
detail.


title: IT formulae for gamma target: mutual information and relative entropy

abstract:
  In this paper, we introduce new Stein identities for gamma target
distribution as well as a new non-linear channel specifically designed for
gamma inputs. From these two ingredients, we derive an explicit and simple
formula for the derivative of the input-output mutual information of this
non-linear channel with respect to the channel quality parameter. This relation
is reminiscent of the well-known link between the derivative of the
input-output mutual information of additive Gaussian noise channel with respect
to the signal-to-noise ratio and the minimum mean-square error. The proof
relies on a rescaled version of De Bruijn identity for gamma target
distribution together with a stochastic representation for the gamma specific
Fisher information. Finally, we are able to derive precise bounds and
asymptotics for the input-output mutual information of the non-linear channel
with gamma inputs.


title: A note on the probabilistic N-Banach spaces

abstract:
  In this paper, we define probabilistic n-Banach spaces along with some
concepts in this field and study convergence in these spaces by some lemmas and
theorem.


title: New solutions in pure gravity with degenerate tetrads

abstract:
  In first order formulation of pure gravity, we find a new class of solutions
to the equations of motion represented by degenerate four-geometries. These
configurations are described by non- invertible tetrads with two zero
eigenvalues and admit non-vanishing torsion. The homogeneous ones among these
infinitely many degenerate solutions admit a geometric classification provided
by the three fundamental geometries that a closed two-surface can accomodate,
namely, E^2 , S^2 and H^2.


title:
Intrinsic characterization and the extension operator in variable
  exponent function spaces on special Lipschitz domains

abstract:
  We study 2-microlocal Besov and Triebel-Lizorkin spaces with variable
exponents on special Lipschitz domains. These spaces are as usual defined by
restriction of the corresponding spaces on $\R^n$. In this paper we give two
intrinsic characterizations of these spaces using local means and the Peetre
maximal operator. Further we construct a linear and bounded extension operator
following the approach done by Rychkov, which at the end also turns out to be
universal.