title:
The $q$-Dixon--Anderson integral and multi-dimensional $_1\psi_1$
  summations

abstract:
  The Dixon--Anderson integral is a multi-dimensional integral evaluation
fundamental to the theory of the Selberg integral. The $_1\psi_1$ summation is
a bilateral generalization of the $q$-binomial theorem. It is shown that a
$q$-generalization of the Dixon--Anderson integral, due to Evans, and
multi-dimensional generalizations of the $_1\psi_1$ summation, due to Milne and
Gustafson, can be viewed as having a common origin in the theory of
$q$-difference equations as expounded by Aomoto. Each is shown to be determined
by a $q$-difference equation of rank one, and a certain asymptotic behavior. In
calculating the latter, essential use is made of the concepts of truncation,
regularization and connection formulae.


title: Minimal Higgs inflation

abstract:
  We consider a possibility that the Higgs field in the Standard Model (SM)
serves as an inflaton when its value is around the Planck scale. We assume that
the SM is valid up to an ultraviolet cutoff scale \Lambda, which is slightly
below the Planck scale, and that the Higgs potential becomes almost flat above
\Lambda. Contrary to the ordinary Higgs inflation scenario, we do not assume
the huge non-minimal coupling, of O(10^4), of the Higgs field to the Ricci
scalar. We find that \Lambda must be less than 5*10^{17}GeV in order to explain
the observed fluctuation of the cosmic microwave background, no matter how we
extrapolate the Higgs potential above \Lambda. The scale 10^{17}GeV coincides
with the perturbative string scale, which suggests that the SM is directly
connected with the string theory. For this to be true, the top quark mass is
restricted to around 171GeV, with which \Lambda can exceed 10^{17}GeV. As a
concrete example of the potential above \Lambda, we propose a simple log type
potential. The predictions of this specific model for the e-foldings N_*=50--60
are consistent with the current observation, namely, the scalar spectral index
is n_s=0.977--0.983 and the tensor to scalar ratio 0<r<0.012--0.010. Other
parameters, dn_s/dlnk, n_t, and their derivatives, are also consistent.


title:
Nonthermal Radiation from Supernova Remnants: Effects of Magnetic Field
  Amplification and Particle Escape

abstract:
  We explore nonlinear effects of wave-particle interactions on the diffusive
shock acceleration (DSA) process in Type Ia-like, SNR blast waves, by
implementing phenomenological models for magnetic field amplification,
Alfv'enic drift, and particle escape in time-dependent numerical simulations of
nonlinear DSA. For typical SNR parameters the CR protons can be accelerated to
PeV energies only if the region of amplified field ahead of the shock is
extensive enough to contain the diffusion lengths of the particles of interest.
Even with the help of Alfv'enic drift, it remains somewhat challenging to
construct a nonlinear DSA model for SNRs in which order of 10 % of the
supernova explosion energy is converted to the CR energy and the magnetic field
is amplified by a factor of 10 or so in the shock precursor, while, at the same
time, the energy spectrum of PeV protons is steeper than E^{-2}. To explore the
influence of these physical effects on observed SNR emissions, we also compute
resulting radio-to-gamma-ray spectra. Nonthermal emission spectra, especially
in X-ray and gamma-ray bands,depend on the time dependent evolution of CR
injection process, magnetic field amplification, and particle escape, as well
as the shock dynamic evolution. This result comes from the fact that the high
energy end of the CR spectrum is composed of the particles that are injected in
the very early stages of blast wave evolution. Thus it is crucial to understand
better the plasma wave-particle interactions associated with collisionless
shocks in detail modeling of nonthermal radiation from SNRs.


title: NGC 5694: another foster son of the Galactic Halo

abstract:
  We present the results of the analysis of high-resolution spectra obtained
with UVES-FLAMES@VLT for six red giant branch stars in the outer-halo
metal-poor ([Fe/H]I=-1.98 and [Fe/H]II=-1.83) Galactic globular cluster NGC
5694, which has been suggested as a possible incomer by Lee et al. (2006) based
on the anomalous chemical composition of a single cluster giant. We obtain
accurate abundances for a large number of elements and we find that: (a) the
six target stars have the same chemical composition within the uncertainties,
except for Na and Al; (b) the average cluster abundance of \alpha\ elements
(with the only exception of Si) is nearly solar, at odds with typical halo
stars and globular clusters of similar metallicity; (c) Y, Ba, La and Eu
abundances are also significantly lower than in Galactic field stars and star
clusters of similar metallicity. Hence we confirm the Lee et al. classification
of NGC 5694 as a cluster of extra-galactic origin. We provide the first insight
on the Na-O and Mg-Al anti-correlations in this cluster: all the considered
stars have very similar abundance ratios for these elements, except one that
has significantly lower [Na/Fe] and [Al/Fe] ratios, suggesting that some degree
of early self-enrichment has occurred also in this cluster.


title:
Spin-polarized electronic structure of the core-shell ZnO/ZnO:Mn
  nanowires probed by x-ray absorption and emission spectroscopy

abstract:
  The combination of x-ray spectroscopy methods complemented with theoretical
analysis unravels the coexistence of paramagnetic and antiferromagnetic phases
in the Zn_0.9Mn_0.1O shell deposited onto array of wurtzite ZnO nanowires. The
shell is crystalline with orientation toward the ZnO growth axis, as
demonstrated by X-ray linear dichroism. EXAFS analysis confirmed that more than
90% of Mn atoms substituted Zn in the shell while fraction of secondary phases
was below 10%. The value of manganese spin magnetic moment was estimated from
the Mn K{\beta} X-ray emission spectroscopy to be 4.3{\mu}B which is close to
the theoretical value for substitutional Mn_Zn. However the analysis of L_2,3
x-ray magnetic circular dichroism data showed paramagnetic behaviour with
saturated spin magnetic moment value of 1.95{\mu}B as determined directly from
the spin sum rule. After quantitative analysis employing atomic multiplet
simulations such difference was explained by a coexistence of paramagnetic
phase and local antiferromagnetic coupling of Mn magnetic moments. Finally,
spin-polarized electron density of states was probed by the spin-resolved Mn
K-edge XANES spectroscopy and consequently analyzed by band structure
calculations.


title: Condensation Under Controlled Cooling: A Simulation Study

abstract:
  The formation, growth, structure and cluster size distribution (CSD)
properties in a two-dimensional system of particles interacting with
Lennard-Jones (LJ) potential under controlled cooling condition have been
studied using Monte-Carlo (MC) method considering modified Metropolis algorithm
to introduce realistic thermal motion of the particles. The system, initially
at relatively higher temperature Ti, undergoes temperature reduction following
exponential law with decay constant a to a lower temperature Tf and
subsequently reaches equilibrium. The equilibrium phase configuration depends
strongly on the number density c of particles and a. The root mean square
particle displacement in the final equilibrium phase shows maximum value for a
= ac ~ 10-3 for all c. The CSD properties obtained at a = 10-3 shows a sharp
peak in the lower cluster size region for low c. The peak shifts towards higher
cluster size for lower a. The CSD fits well with a modified Gamma distribution
function. All of the particles in the system form a single cluster when c is
larger than a critical value cc (~0.5). A compact well-defined ordered
structure is obtained for c > cc and a << ac.


title:
Evolution of oxygen and nitrogen abundances and nitrogen production
  mechanism in massive star-forming galaxies

abstract:
  Utilizing the observational data of 55,318 star-forming galaxies (SFGs)
selected from the catalog of MPA-JHU emission-line measurements for the SDSS
DR8, we investigate the galaxy downsizing effect of their O and N enrichments,
and the nitrogen production mechanism in them. We show the redshift evolution
of O and N abundances and specific star formation rates for different galaxy
mass ranges, demonstrating the galaxy downsizing effect caused by less massive
progenitors of less massive galaxies. The O and N abundances do not remain
constant for different galaxy mass ranges, and the enrichment (and hence star
formation) decreases with increasing galaxy stellar mass. We find evidence of
the O enrichment for galaxies with stellar masses $M_{*}>10^{11.0} $ (in units
of $M_{\odot}$), i.e. $\Delta({\log}({\rm O/H})) \sim 0.10$ and
$\Delta({\log}({\rm N/H})) \sim 0.28$ from redshift 0.023 to 0.30. Based on the
evolutionary schematic model of N/O ratios in Coziol et al., who proposed the
scheme that the production of nitrogen is the consequence of a sequence of
bursts in SFGs, we conclude that the nitrogen production is dominated by the
intermediate-mass stars, which dominate the secondary synthesis in SFGs.
However, for galaxies with $M_{*}>10^{10.35} $ we find evidence of enhanced N/O
abundance ratios, which are significantly above the secondary synthesis line.
This suggests that outflows of massive stars, which deplete oxygen efficiently,
are more important in massive galaxies. Finally we find an excellent linear
relation between $M_{*}$ and log(N/O), indicating that the N/O abundance ratio
is a good indicator of the stellar mass in a SFG and may be used as a standard
candle for studying cosmology, if confirmed with further studies.


title:
Multi-Epoch VERA Observations of Sagittarius A*: I. Images and
  Structural Variability

abstract:
  We report the results of multi-epoch observations of Sgr A* with VLBI
Exploration of Radio Astrometry (VERA) at 43 GHz, carried out from 2004 to
2008. We detected a time variation of flux at 11 % level and intrinsic size at
19 %. In addition, comparisons with previous Very Long Baseline Array (VLBA)
results shows that Sgr A* underwent the flaring event at least longer than 10
days in May 2007. The intrinsic size of Sgr A* remained unchanged within 1
$\sigma$ level from the size before/after the flaring event, indicating that
the brightness temperature of Sgr A* was increased. The flaring event occurred
within 31 d, which is shorter than the refractive time scale. Moreover it is
difficult to explain the increase in the spectral index at the flaring event by
the simple interstellar scattering model. Hence, the flaring event is most
likely associated with the changes in intrinsic properties of Sgr A*. We
considered the origin of the brightness temperature variation, and concluded
that the flaring event of Sgr A* could be explained by the continuous heating
of electrons, such as a standing shock in accretion flow.


title:
Degenerate parabolic equation with zero flux boundary condition and its
  approximations

abstract:
  We study a degenerate parabolic-hyperbolic equation with zero flux boundary
condition. The aim of this paper is to prove convergence of numerical
approximate solutions towards the unique entropy solution. We propose an
implicit finite volume scheme on admissible mesh. We establish fundamental
estimates and prove that the approximate solution converge towards an
entropy-process solution. Contrarily to the case of Dirichlet conditions, in
zero-flux problem unnatural boundary regularity of the flux is required to
establish that entropy-process solution is the unique entropy solution. In the
study of well-posedness of the problem, tools of nonlinear semigroup theory
(stationary, mild and integral solutions) were used in [Andreianov, Gazibo,
ZAMP, 2013] in order to overcome this difficulty. Indeed, in some situations
including the one-dimensional setting, solutions of the stationary problem
enjoy additional boundary regularity. Here, similar arguments are developed
based on the new notion of integral-process solution that we introduce for this
purpose.


title:
Spatio-spectral Formulation and Design of Spatially-Varying Filters for
  Signal Estimation on the 2-Sphere

abstract:
  In this paper, we present an optimal filter for the enhancement or estimation
of signals on the 2-sphere corrupted by noise, when both the signal and noise
are realizations of anisotropic processes on the 2-sphere. The estimation of
such a signal in the spatial or spectral domain separately can be shown to be
inadequate. Therefore, we develop an optimal filter in the joint
spatio-spectral domain by using a framework recently presented in the
literature --- the spatially localized spherical harmonic transform ---
enabling such processing. Filtering of a signal in the spatio-spectral domain
facilitates taking into account anisotropic properties of both the signal and
noise processes. The proposed spatio-spectral filtering is optimal under the
mean-square error criterion. The capability of the proposed filtering framework
is demonstrated with by an example to estimate a signal corrupted by an
anisotropic noise process.


title: Proton-air collisions in a model of soft interactions at high energies

abstract:
  We show that Pomeron interactions generate important corrections to the
Gribov-Glauber formula, which is used to extract proton-proton cross sections
from proton-air collisions at high energy. We show that these corrections are
larger than the errors for proton-air cross sections measured at ultra high
energies in cosmic ray experiments. We present a description of these data in
our model for soft interactions at high energies, which describes all available
accelerator data including that from the LHC.


title: Griffiths phases and the stretching of criticality in brain networks

abstract:
  Hallmarks of criticality, such as power-laws and scale invariance, have been
empirically found in cortical networks and it has been conjectured that
operating at criticality entails functional advantages, such as optimal
computational capabilities, memory, and large dynamical ranges. As critical
behavior requires a high degree of fine tuning to emerge, some type of
self-tuning mechanism needs to be invoked. Here we show that, taking into
account the complex hierarchical-modular architecture of cortical networks, the
singular critical point is replaced by an extended critical-like region which
corresponds --in the jargon of statistical mechanics-- to a Griffiths phase.
Using computational and analytical approaches, we find Griffiths phases in
synthetic hierarchical networks and also in empirical brain networks such as
the human connectome and the caenorhabditis elegans one. Stretched critical
regions, stemming from structural disorder, yield enhanced functionality in a
generic way, facilitating the task of self-organizing, adaptive, and
evolutionary mechanisms selecting for criticality.


title: Heat equation and convolution inequalities

abstract:
  It is known that many classical inequalities linked to convolutions can be
obtained by looking at the monotonicity in time of convolutions of powers of
solutions to the heat equation, provided that both the exponents and the
coefficients of diffusions are suitably chosen and related. This idea can be
applied to give an alternative proof of the sharp form of the classical Young's
inequality and its converse, to Brascamp--Lieb type inequalities, Babenko's
inequality and Pr\'ekopa--Leindler inequality as well as the Shannon's entropy
power inequality. This note aims in presenting new proofs of these results, in
the spirit of the original arguments introduced by Stam to prove the entropy
power inequality.


title: DorFin: WiFi Fingerprint-based Localization Revisited

abstract:
  Although WiFi fingerprint-based indoor localization is attractive, its
accuracy remains a primary challenge especially in mobile environments.
Existing approaches either appeal to physical layer information or rely on
extra wireless signals for high accuracy. In this paper, we revisit the RSS
fingerprint-based localization scheme and reveal crucial observations that act
as the root causes of localization errors, yet are surprisingly overlooked or
even unseen in previous works. Specifically, we recognize APs' diverse
discrimination for fingerprinting a specific location, observe the RSS
inconsistency caused by signal fluctuations and human body blockages, and
uncover the RSS outdated problem on commodity smartphones. Inspired by these
insights, we devise a discrimination factor to quantify different APs'
discrimination, incorporate robust regression to tolerate outlier measurements,
and reassemble different fingerprints to cope with outdated RSSs. Combining
these techniques in a unified solution, we propose DorFin, a novel scheme of
fingerprint generation, representation, and matching, which yields remarkable
accuracy without incurring extra cost. Extensive experiments demonstrate that
DorFin achieves mean error of 2 meters and more importantly, bounds the 95th
percentile error under 5.5 meters; these are about 56% and 69% lower,
respectively, compared with the state-of-the-art schemes such as Horus and
RADAR.


title:
Electron microscopy and diffraction study of high-temperature
  diamond-like Si-based ferromagnetic with self-organized super-lattice
  distribution of Mn impurity

abstract:
  New structure data for the high-temperature diluted magnetic semiconductor
Si:Mn, synthesized by laser method are presented. The higher resolution
transmission electron microscopy and diffraction was applied in two crystal
directions of epitaxial layers of DMS Si:Mn with elimination of the
contribution from GaAs substrate and interface. It is established, that the DMS
Si:Mn can be represent as compound with variable composition Si2+xMn1-x (0 <x
<1), single-phase diamond like structure, high crystal perfection and the
self-organized formation of the super-lattice structures with the period equal
to triple the distance between the nearest (110) atomic layers and interval
between (110) layers which are doped by Mn atoms and orientated along the
direction of Si:Mn film growth. The Si with 15 percent of Mn (or Si2.5Mn0.5)
films consist of blocks with the 15-50 nm sizes and with mutually perpendicular
orientations of the super-lattice modulations. Atoms of manganese in the (110)
layers, doped by these impurity, settle down in the form of strips of an
one-atom thickness. These manganese strips in the given (110) layer alternate
occupy about half of area of the layer (110) in the full consent with the
spectral X-ray analysis and ferromagnetic resonance data.


title:
Ramanujan's $_1\psi_1$ summation theorem --- perspective, announcement
  of bilateral $q$-Dixon--Anderson and $q$-Selberg integral extensions, and
  context

abstract:
  The Ramanujan $_1\psi_1$ summation theorem in studied from the perspective of
$q$-Jackson integrals, $q$-difference equations and connection formulas. This
is an approach which has previously been shown to yield Bailey's
very-well-poised $_6\psi_6$ summation. Bilateral Jackson integral
generalizations of the Dixon--Anderson and Selberg integrals relating to the
type $A$ root system are identified as natural candidates for multidimensional
generalizations of the Ramanujan $_1\psi_1$ summation theorem. New results of
this type are announced, and furthermore they are put into context by reviewing
from previous literature explicit product formulas for Jackson integrals
relating to other roots systems obtained from the same perspective.


title:
Inflation and cosmic (super)strings: implications of their intimate
  relation revisited

abstract:
  We briefly discuss constraints on supersymmetric hybrid inflation models and
examine the consistency of brane inflation models. We then address the
implications for inflationary scenarios resulting from the strong constraints
on the cosmic (super)string tension imposed from the most recent cosmic
microwave background temperature anisotropies data.


title:
$L^2$-asymptotic stability of mild solutions to Navier-Stokes system in
  $R^3$

abstract:
  We consider global-in-time small mild solutions of the initial value problem
to the incompressible Navier-Stokes equations in $R^3$. For such solutions, an
asymptotic stability is established under arbitrarily large initial
$L^2$-perturbations.


title: External Potential Flow Around Multiple Aerofoils

abstract:
  This chapter present a fats boundary integral equation method for numerical
computing of uniform potential flow past multiple aerofoils. The presented fast
multipole-based iterative solution procedure requires only $O(nm\ln n)$
operations where $m$ is the number of aerofoils and $n$ is the number of nodes
in the discretization of each aerofoil's boundary. We demonstrate the
performance of our methods on several numerical examples.


title:
On the differential equation $\dot{\Theta}=(\Theta^{T}-\Theta)\Theta$
  with $\Theta\in{SO(n)}$

abstract:
  In this note we consider the global convergence properties of the
differential equation $\dot{\Theta}=(\Theta^{T}-\Theta)\Theta$ with
$\Theta\in{SO(n)}$, which is a gradient flow of the function
$f:SO(n)\rightarrow\mathbb{R},\Theta\mapsto{2n-2\tr{\Theta}}$. Many of the
presented results are not new, but scattered throughout literature. The
motivation of this note is to summarize and extend the convergence results
known from literature. Rather than giving an exhaustive list of references, the
results are presented in a self-contained fashion.


title: Extensions of the class of multiplicative functions

abstract:
  We consider the classes of quasimultiplicative, semimultiplicative and
Selberg multiplicative functions as extensions of the class of multiplicative
functions. We apply these concepts to Ramanujan's sum and its analogue with
respect to regular integers (mod r).


title:
The detection of Kondo effect in the resistivity of graphene: artifacts
  and strategies

abstract:
  We discuss the difficulties to discover Kondo effect in the resistivity of
graphene. Similarly to the Kondo effect, electron-electron interaction effects
and weak localization appear as logarithmic corrections to the resistance. In
order to disentangle these contributions, a refined analysis of the
magnetoconductance and the magnetoresistance is introduced. We present
numerical simulations which display the discrimination of both effects.
Further, we present experimental data of magnetotransport. When magnetic
molecules are added to graphene, a logarithmic correction to the conductance
occurs, which apparently suggests Kondo physics. Our thorough evaluation
scheme, however, reveals that this interpretation is not conclusive: the data
can equally be explained by electron-electron interaction corrections in an
inhomogeneous sample. Our evaluation scheme paves the way for a more refined
search for the Kondo effect in graphene.


title:
A conservative, skew-symmetric Finite Difference Scheme for the
  compressible Navier--Stokes Equations

abstract:
  We present a fully conservative, skew-symmetric finite difference scheme on
transformed grids. The skew-symmetry preserves the kinetic energy by first
principles, simultaneously avoiding a central instability mechanism and
numerical damping. In contrast to other skew-symmetric schemes no special
averaging procedures are needed. Instead, the scheme builds purely on
point-wise operations and derivatives. Any explicit and central derivative can
be used, permitting high order and great freedom to optimize the scheme
otherwise. This also allows the simple adaption of existing finite difference
schemes to improve their stability and damping properties.


title: The Astrophysics of the Intracluster Plasma

abstract:
  [Abridged] Since 1971 observations in X rays of thousands galaxy clusters
have uncovered huge amounts of hot baryons filling up the deep gravitational
potential wells provided by dark matter (DM) halos with sizes of millions
light-years and masses of some 10^15 M_sun. At temperatures T~10^8 K and with
average densities of n~1 particle per liter, such baryons add up to some 10^14
M_sun. With the neutralizing electrons, they constitute the best
proton-electron plasma in the Universe (Intra Cluster Plasma, ICP). A key
physical feature of the ICP is constituted by its good local Thermal
equilibrium, and by its overall hydrostatic condition in the DM wells,
modulated by entropy. The latter is set up in the cluster center by the initial
halo collapse, and is progressively added at the outgrowing cluster boundary by
standing shocks in the supersonic flow of intergalactic gas into the DM wells.
We review these entropy-based models and discuss their outcomes and predictions
concerning the ICP observables in X rays and in microwaves. The results provide
a baseline for disentangling a number of additional and intriguing physical
processes superposed to the general equilibrium. We cover: the central entropy
erosion produced by radiative cooling vs. the intermittent energy inputs mainly
due to active galactic nuclei and mergers; outer turbulent support linked with
weakening shocks and decreasing inflow through the virial boundary, causing
reduced entropy production; the development from high to low entropy levels
throughout a typical cluster; perturbations of the equilibrium up to outright
disruption due to deep impacts of infalling galaxy groups or collisions with
comparable companion clusters; relativistic energy distributions of electrons
accelerated during such events, producing extended radio emission by
synchrotron radiation, and contributing to non-thermal pressure support for the
ICP.


title: 3+1D Massless Weyl spinors from bosonic scalar-tensor duality

abstract:
  We consider the fermionization of a bosonic free theory characterized by the
3+1D scalar - tensor duality. This duality can be interpreted as the
dimensional reduction, via a planar boundary, of the 4+1D topological BF
theory. In this model, adopting the Sommerfield tomographic representation of
quantized bosonic fields, we explicitly build a fermionic operator and its
associated Klein factor such that it satisfies the correct anticommutation
relations. Interestingly, we demonstrate that this operator satisfies the
massless Dirac equation and that it can be identified with a 3+1D Weyl spinor.
Finally, as an explicit example, we write the integrated charge density in
terms of the tomographic transformed bosonic degrees of freedom.


title: Convex neighborhoods for Lipschitz connections and sprays

abstract:
  We establish that over a C^{2,1} manifold the exponential map of any
Lipschitz connection or spray determines a local Lipeomophism and that,
furthermore, reversible convex normal neighborhoods do exist. To that end we
use the method of Picard-Lindelof approximation to prove the strong
differentiability of the exponential map at the origin and hence a version of
Gauss' Lemma which does not require the differentiability of the exponential
map. Contrary to naive differential degree counting, the distance functions are
shown to gain one degree and hence to be C^{1,1}. As an application to
mathematical relativity, it is argued that the mentioned differentiability
conditions can be considered the optimal ones to preserve most results of
causality theory. This theory is also shown to be generalizable to the Finsler
spacetime case. In particular, we prove that the local Lorentzian(-Finsler)
length maximization property of causal geodesics in the class of absolutely
continuous causal curves holds already for C^{1,1} spacetime metrics. Finally,
we study the local existence of convex functions and show that arbitrarily
small globally hyperbolic convex normal neighborhoods do exist.


title: Critical points and number of master integrals

abstract:
  We consider the question about the number of master integrals for a multiloop
Feynman diagram. We show that, for a given set of denominators, this number is
totally determined by the critical points of the polynomials entering either of
the two representations: the parametric representation and the Baikov
representation. In particular, for the parametric representation the
corresponding polynomial is just the sum of Symanzik polynomials. The relevant
topological invariant is the sum of the Milnor numbers of the proper critical
points. We present a Mathematica package Mint to automatize the counting of the
master integrals.


title: Calculation of thermal noise in grating reflectors

abstract:
  Grating reflectors have been repeatedly discussed to improve the noise
performance of metrological applications due to the reduction or absence of any
coating material. So far, however, no quantitative estimate on the thermal
noise of these reflective structures exists. In this work we present a
theoretical calculation of a grating reflector's noise. We further apply it to
a proposed 3rd generation gravitational wave detector. Depending on the grating
geometry, the grating material and the temperature we obtain a thermal noise
decrease by up to a factor of ten compared to conventional dielectric mirrors.
Thus the use of grating reflectors can substantially improve the noise
performance in metrological applications.


title: Structure of classes of graphs defined by forbidding induced subgraphs

abstract:
  This document is the Habilitation Thesis (Habilitation \`a Diriger des
Recherches) of Nicolas Trotignon. It presents his work in structural graph
theory, from 2001 to 2009.


title: The Software Package for Astronomical Reductions with KMOS: SPARK

abstract:
  KMOS is a multi-object near-infrared integral field spectrometer with 24
deployable cryogenic pick-off arms. Inevitably, data processing is a complex
task that requires careful calibration and quality control. In this paper we
describe all the steps involved in producing science-quality data products from
the raw observations. In particular, we focus on the following issues: (i) the
calibration scheme which produces maps of the spatial and spectral locations of
all illuminated pixels on the detectors; (ii) our concept of minimising the
number of interpolations, to the limiting case of a single reconstruction that
simultaneously uses raw data from multiple exposures; (iii) a comparison of the
various interpolation methods implemented, and an assessment of the performance
of true 3D interpolation schemes; (iv) the way in which instrumental flexure is
measured and compensated. We finish by presenting some examples of data
processed using the pipeline.


title: Translation invariant quadratic forms in dense sets

abstract:
  We generalize Roth's theorem on three term arithmetic progressions to
translation invariant quadratic forms in at least 17 variables. We use
Fourier-analysis, restriction theory, uniformity norms and Roth's density
increment method to show quantitative estimates for subsets of the integers
without any non-trivial solutions.


title: Cohomology of Heisenberg Lie Superalgebras

abstract:
  Suppose the ground field to be algebraically closed and of characteristic
different from $2$ and $3$. All Heisenberg Lie superalgebras consist of two
super versions of the Heisenberg Lie algebras, $\frak{h}_{2m,n}$ and
$\frak{ba}_n$ with $m$ a nonnegative integer and $n$ a positive integer. The
space of a "classical" Heisenberg Lie superalgebra $\frak{h}_{2m,n}$ is the
direct sum of a superspace with a non-degenerate anti-supersymmetric even
bilinear form and a one-dimensional space of values of this form constituting
the even center. The other super analog of the Heisenberg Lie algebra,
$\frak{ba}_n$, is constructed by means of a non-degenerate anti-supersymmetric
odd bilinear form with values in the one-dimensional odd center. In this paper,
we study the cohomology of $\frak{h}_{2m,n}$ and $\frak{ba}_n$ with
coefficients in the trivial module by using the Hochschild-Serre spectral
sequences relative to a suitable ideal. In characteristic zero case, for any
Heisenberg Lie superalgebra, we determine completely the Betti numbers and
associative superalgebra structure for their cohomology. In characteristic
$p>3$ case, we determine the associative superalgebra structures for the
divided power cohomology of $\frak{ba}_n$ and we also make an attempt to
determine the cohomology of $\frak{h}_{2m,n}$ by computing it in a
low-dimensional case.


title:
A Novel Query-Based Approach for Addressing Summarizability Issues in
  XOLAP

abstract:
  The business intelligence and decision-support systems used in many
application domains casually rely on data warehouses, which are
decision-oriented data repositories modeled as multidimensional (MD)
structures. MD structures help navigate data through hierarchical levels of
detail. In many real-world situations, hierarchies in MD models are complex,
which causes data aggregation issues, collectively known as the summarizability
problem. This problem leads to incorrect analyses and critically affects
decision making. To enforce summarizability, existing approaches alter either
MD models or data, and must be applied a priori, on a case-by-case basis, by an
expert. To alter neither models nor data, a few query-time approaches have been
proposed recently, but they only detect summarizability issues without solving
them. Thus, we propose in this paper a novel approach that automatically
detects and processes summarizability issues at query time, without requiring
any particular expertise from the user. Moreover, while most existing
approaches are based on the relational model, our approach focus on an XML MD
model, since XML data is customarily used to represent business data and its
format better copes with complex hierarchies than the relational model.
Finally, our experiments show that our method is likely to scale better than a
reference approach for addressing the summarizability problem in the MD
context.


title:
Benchmarking Summarizability Processing in XML Warehouses with Complex
  Hierarchies

abstract:
  Business Intelligence plays an important role in decision making. Based on
data warehouses and Online Analytical Processing, a business intelligence tool
can be used to analyze complex data. Still, summarizability issues in data
warehouses cause ineffective analyses that may become critical problems to
businesses. To settle this issue, many researchers have studied and proposed
various solutions, both in relational and XML data warehouses. However, they
find difficulty in evaluating the performance of their proposals since the
available benchmarks lack complex hierarchies. In order to contribute to
summarizability analysis, this paper proposes an extension to the XML warehouse
benchmark (XWeB) with complex hierarchies. The benchmark enables us to generate
XML data warehouses with scalable complex hierarchies as well as
summarizability processing. We experimentally demonstrated that complex
hierarchies can definitely be included into a benchmark dataset, and that our
benchmark is able to compare two alternative approaches dealing with
summarizability issues.


title: String Topology, Euler Class and TNCZ free loop fibrations

abstract:
  Let $M$ be a connected, closed oriented manifold. Let $\omega\in H^m(M)$ be
its orientation class. Let $\chi(M)$ be its Euler characteristic. Consider the
free loop fibration $\Omega M\buildrel{i}\over\hookrightarrow
LM\buildrel{ev}\over\twoheadrightarrow M$. For any class $a\in H^*(LM)$ of
positive degree, we prove that the cup product $\chi(M)a\cup ev^*(\omega)$ is
null. In particular, if $i^*:H^*(LM;\mathbb{F}_p)\twoheadrightarrow H^*(\Omega
M;\mathbb{F}_p)$ is onto then $\chi(M)$ is divisible by $p$ (or $M$ is a
point).


title: Rational homotopy -- Sullivan models

abstract:
  This chapter is a short introduction to Sullivan models. In particular, we
find the Sullivan model of a free loop space and use it to prove the
Vigu\'e-Poirrier-Sullivan theorem on the Betti numbers of a free loop space.


title: Amplification of pulses in nonlinear geometric optics

abstract:
  In this companion paper to our study of amplification of wavetrains, we study
weakly stable semilinear hyperbolic boundary value problems with pulse data.
Here weak stability means that exponentially growing modes are absent, but the
so-called uniform Lopatinskii condition fails at some boundary frequency in the
hyperbolic region. As a consequence of this degeneracy there is again an
amplification phenomenon: outgoing pulses of amplitude $O(\eps^2)$ and
wavelength $\eps$ give rise to reflected pulses of amplitude $O(\eps)$, so the
overall solution has amplitude $O(\eps)$. Moreover, the reflecting pulses
emanate from a radiating pulse that propagates in the boundary along a
characteristic of the Lopatinskii determinant. In the case of N*N systems
considered here, a single outgoing pulse produces on reflection a family of
incoming pulses traveling at different group velocities. Unlike wavetrains,
pulses do not interact to produce resonances that affect the leading order
profiles. However, pulse interactions do affect lower order profiles and so
these interactions have to be estimated carefully in the error analysis.
Whereas the error analysis in the wavetrain case dealt with small divisor
problems by approximating periodic profiles by trigonometric polynomials (which
amounts to using a high frequency cutoff), in the pulse case we approximate
decaying profiles with nonzero moments by profiles with zero moments (a low
frequency cutoff). Unlike the wavetrain case, we are now able to obtain a rate
of convergence in the limit describing convergence of approximate to exact
solutions.


title: Image Set based Collaborative Representation for Face Recognition

abstract:
  With the rapid development of digital imaging and communication technologies,
image set based face recognition (ISFR) is becoming increasingly important. One
key issue of ISFR is how to effectively and efficiently represent the query
face image set by using the gallery face image sets. The set-to-set distance
based methods ignore the relationship between gallery sets, while representing
the query set images individually over the gallery sets ignores the correlation
between query set images. In this paper, we propose a novel image set based
collaborative representation and classification method for ISFR. By modeling
the query set as a convex or regularized hull, we represent this hull
collaboratively over all the gallery sets. With the resolved representation
coefficients, the distance between the query set and each gallery set can then
be calculated for classification. The proposed model naturally and effectively
extends the image based collaborative representation to an image set based one,
and our extensive experiments on benchmark ISFR databases show the superiority
of the proposed method to state-of-the-art ISFR methods under different set
sizes in terms of both recognition rate and efficiency.


title:
Self-organization in Pd/W(110): interplay between surface structure and
  stress

abstract:
  It has recently been shown that submonolayer Pd on W(110) forms
highly-ordered linear mesoscopic stripes at high temperatures. The stripes
display an internal Pd superstructure with a nano-scale periodicity along the
direction perpendicular to the periodicity of the stripes. The same type of
superstructure is also observed in a wide range of temperatures below the
stripe formation temperature. We present a combined experimental and
theoretical study of this superstructure of Pd on W(110) and investigate its
influence on the appearance of the linear mesoscopic stripes. By means of
low-energy electron diffraction and low-energy-electron microscopy we show that
it has a far more peculiar dependence on temperature and coverage than expected
from a regular surface reconstruction. Using density-functional theory, we
model the Pd superstructures as periodic vacancy-line type of configurations
and investigate their energetics and elastic properties. From our calculated
surface stresses and anisotropies for the vacancy-line type of configurations,
and based on the continuum elasticity theory, we demonstrate quantitatively
that the vacancy-line type of structure is a prerequisite for the formation of
the linear mesoscopic stripes. Moreover, we show that the physics driving the
formation of the internal superstructure is very similar to the one at play in
forming the mesoscopic stripes themselves.


title: On the local metric dimension of corona product graphs

abstract:
  A vertex $v\in V(G)$ is said to distinguish two vertices $x,y\in V(G)$ of a
nontrivial connected graph $G$ if the distance from $v$ to $x$ is different
from the distance from $v$ to $y$.
  A set $S\subset V(G)$ is a local metric generator for $G$ if every two
adjacent vertices of $G$ are distinguished by some vertex in $S$. A local
metric generator with the minimum cardinality is called a local metric basis
for $G$ and its cardinality, the local metric dimension of G. In this paper we
study the problem of finding exact values for the local metric dimension of
corona product of graphs.


title:
Measurement of the asymmetry in angular distributions of leptons
  produced in dilepton ttbar final states in ppbar collisions at sqrt(s)=1.96
  TeV

abstract:
  We present measurements of asymmetries in angular distributions of leptons
produced in ttbar events in proton-antiproton collisions at the Fermilab
Tevatron Collider. We consider final states where the W bosons from top quark
and antiquark decays both decay into l nu (l=e, mu) resulting in oppositely
charged dilepton final states with accompanying jets. Using 9.7 fb^-1 of
integrated luminosity collected with the D0 detector, we find the asymmetries
in lepton pseudorapidity compatible with predictions based on the standard
model.


title:
Locking of periodic patterns in Cahn-Hilliard models for
  Langmuir-Blodgett transfer

abstract:
  The influence of a periodic spatial forcing on the pattern formation in a
generalized Cahn-Hilliard model is studied in order to describe the pattern
formation in Langmuir-Blodgett transfer onto prestructured substrates. The
occurring synchronization effects enable a control mechanism for the pattern
formation process. In the one dimensional case the parameter range in which
patterns are created is increased and the patterns' properties can be adjusted
in a broader range. In two dimensions, one dimensional stripe patterns can be
destabilized, giving rise to a multitude of new two dimensional patterns,
including oblique and lattice patterns.


title: Noncommutative Gauge Theories: Model for Hodge theory

abstract:
  The nilpotent BRST, anti-BRST, dual-BRST and anti-dual-BRST symmetry
transformations are constructed in the context of noncommutative (NC) 1-form as
well as 2-form gauge theories. The corresponding Noether's charges for these
symmetries on the Moyal plane are shown to satisfy the same algebra as by the
de Rham cohomological operators of differential geometry. The Hodge
decomposition theorem on compact manifold is also studied. We show that
noncommutative gauge theories are field theoretic models for Hodge theory.


title: Transforming planar graph drawings while maintaining height

abstract:
  There are numerous styles of planar graph drawings, notably straight-line
drawings, poly-line drawings, orthogonal graph drawings and visibility
representations. In this note, we show that many of these drawings can be
transformed from one style to another without changing the height of the
drawing. We then give some applications of these transformations.


title: Balancedness of Arnoux-Rauzy and Brun words

abstract:
  We study balancedness properties of words given by the Arnoux-Rauzy and Brun
multi-dimensional continued fraction algorithms. We show that almost all Brun
words on 3 letters and Arnoux-Rauzy words over arbitrary alphabets are finitely
balanced; in particular, boundedness of the strong partial quotients implies
balancedness. On the other hand, we provide examples of unbalanced Brun words
on 3 letters.


title:
Bosonization, Singularity Analysis, Nonlocal Symmetry Reductions and
  Exact Solutions of Supersymmetric KdV Equation

abstract:
  Assuming that there exist at least two fermionic parameters, the classical N=
1 supersymmetric Korteweg-de Vries (SKdV) system can be transformed to some
coupled bosonic systems. The boson fields in the bosonized SKdV (BSKdV) systems
are defined on even Grassmann algebra. Due to the intrusion of other Grassmann
parameters, the BSKdV systems are different from the usual non-supersymmetric
integrable systems, and many more abundant solution structures can be
unearthed. With the help of the singularity analysis, the Painlev\'e property
of the BSKdV system is proved and a B\"acklund transformation (BT) is found.
The BT related nonlocal symmetry, we call it as residual symmetry, is used to
find symmetry reduction solutions of the BSKdV system. Hinted from the symmetry
reduction solutions, a more generalized but much simpler method is established
to find exact solutions of the BSKdV and then the SKdV systems, which actually
can be applied to any fermionic systems.


title: A new randomized algorithm for the Erdos--Hajnal problem

abstract:
  In 1961 Erd\H{o}s and Hajnal introduced the quantity $m(n)$ as the minimum
number of edges in an $n$-uniform hypergraph with chromatic number at least 3.
The best known lower and upper bounds for $ m(n) $ are $ c_1 \sqrt{\frac{n}{\ln
n}} 2^n$ and $c_2 n^2 2^n$ respectively. The lower bound is due to
Radhakrishnan and Srinivasan (see \cite{RS}). A natural generalization for $
m(n) $ is the quantity $ m(n,r) $, which is the minimum number of edges in an
$n$-uniform hypergraph with chromatic number at least $r+1$. In this work, we
present a new randomized algorithm yielding a bound $ m(n,r) \ge c
n^{\frac{r-1}{r}} r^{n-1} $, which improves upon all the previous bounds in a
wide range of the parameters $ n, r $. Moreover, for $ r = 2 $, we get exactly
the same bound as in the work \cite{RS} of Radhakrishnan and Srinivasan, and
our proof is simpler.


title: Detect adverse drug reactions for drug Atorvastatin

abstract:
  Adverse drug reactions (ADRs) are big concern for public health. ADRs are one
of most common causes to withdraw some drugs from markets. Now two major
methods for detecting ADRs are spontaneous reporting system (SRS), and
prescription event monitoring (PEM). The World Health Organization (WHO)
defines a signal in pharmacovigilance as "any reported information on a
possible causal relationship between an adverse event and a drug, the
relationship being unknown or incompletely documented previously". For
spontaneous reporting systems, many machine learning methods are used to detect
ADRs, such as Bayesian confidence propagation neural network (BCPNN), decision
support methods, genetic algorithms, knowledge based approaches, etc. One
limitation is the reporting mechanism to submit ADR reports, which has serious
underreporting and is not able to accurately quantify the corresponding risk.
Another limitation is hard to detect ADRs with small number of occurrences of
each drug-event association in the database. In this paper we propose feature
selection approach to detect ADRs from The Health Improvement Network (THIN)
database. First a feature matrix, which represents the medical events for the
patients before and after taking drugs, is created by linking patients'
prescriptions and corresponding medical events together. Then significant
features are selected based on feature selection methods, comparing the feature
matrix before patients take drugs with one after patients take drugs. Finally
the significant ADRs can be detected from thousands of medical events based on
corresponding features. Experiments are carried out on the drug Atorvastatin.
Good performance is achieved.


title: Rapid Gamma-ray flux variability during the 2013 March Crab Nebula flare

abstract:
  We report on a bright flare in the Crab Nebula detected by the Large Area
Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. The period of
significantly increased luminosity occurred in 2013 March and lasted for
approximately 2 weeks. During this period, we observed flux variability on
timescales of approximately 5\,hours. The combined photon flux above 100 MeV
from the pulsar and its nebula reached a peak value of $(12.5\pm 0.8)\cdot
10^{-6}$\,cm$^{-2}$\,s$^{-1}$ on 2013 March 6. This value exceeds the average
flux by almost a factor of 6 and implies a $\sim20$ times higher flux for the
synchrotron component of the nebula alone. This is the second brightest flare
observed from this source. Spectral and temporal analysis of the LAT data
collected during the outburst reveal a rapidly varying synchrotron component of
the Crab Nebula while the pulsar emission remains constant in time.


title:
The 2XMMi/SDSS Galaxy Cluster Survey. II. The optically confirmed
  cluster sample and the L_X-T relation

abstract:
  We compile a sample of X-ray-selected galaxy groups and clusters from the
XMM-Newton serendipitous source catalogue (2XMMi-DR3) with optical confirmation
and redshift measurement from the Sloan Digital Sky Survey (SDSS). The X-ray
cluster candidates were selected from the 2XMMi-DR3 catalogue in the footprint
of the SDSS-DR7. We developed a finding algorithm to search for overdensities
of galaxies at the positions of the X-ray cluster candidates in the photometric
redshift space and to measure the redshifts of the clusters from the SDSS data.
The detection algorithm provides the photometric redshift of 530 galaxy
clusters. Of these, 310 clusters have a spectroscopic redshift for at least one
member galaxy. About 75 percent of the optically confirmed cluster sample are
newly discovered X-ray clusters. Moreover, 301 systems are known as optically
selected clusters in the literature while the remainder are new discoveries in
X-ray and optical bands. The optically confirmed cluster sample spans a wide
redshift range 0.03-0.70 (median z=0.32). In this paper, we present the
catalogue of X-ray-selected galaxy groups and clusters from the 2XMMi/SDSS
galaxy cluster survey. The catalogue has two subsamples: (i) a cluster sample
comprising 345 objects with their X-ray spectroscopic temperature and flux from
the spectral fitting, and (ii) a cluster sample consisting of 185 systems with
their X-ray flux from the 2XMMi-DR3 catalogue, because their X-ray data are
insufficient for spectral fitting. The updated L_X-T relation of the current
sample with X-ray spectroscopic parameters is presented. We see no evidence for
evolution in the slope and intrinsic scatter of the L_X-T relation with
redshift when excluding the low-luminosity groups.


title:
Spin-motive force and orbital-motive force: from magnon BEC to chiral
  Weyl superfluids

abstract:
  Spin-motive geometric force acting on electrons in metallic ferromagnets is
extended to spin-motive force in magnon BEC, which is represented by
phase-coherent precession of magnetization, and to the orbital-motive force in
superfluid 3He-A. In 3He-A there are two contributions to the orbital-motive
force. One of them comes from the chiral nature of this liquid. Another one
originates from chiral Weyl fermions living in the vicinity of the
topologically protected Weyl points, and is related to the phenomenon of chiral
anomaly.


title: Enhanced Data Integration for LabVIEW Laboratory Systems

abstract:
  Integrating data is a basic concern in many accredited laboratories that
perform a large variety of measurements. However, the present working style in
engineering faculties does not focus much on this aspect. To deal with this
challenge, we developed an educational platform that allows characterization of
acquisition ensembles, generation of Web pages for lessons, as well as
transformation of measured data and storage in a common format. As generally we
had to develop individual parsers for each instrument, we also added the
possibility to integrate the LabVIEW workbench, often used for rapid
development of applications in electrical engineering and automatic control.
This paper describes how we configure the platform for specific equipment, i.e.
how we model it, how we create the learning material and how we integrate the
results in a central database. It also introduces a case study for collecting
data from a thermocouple-based acquisition system based on LabVIEW, used by
students for a laboratory of measurement technologies and transducers.


title:
Adversarial hypothesis testing and a quantum Stein's Lemma for
  restricted measurements

abstract:
  Recall the classical hypothesis testing setting with two convex sets of
probability distributions P and Q. One receives either n i.i.d. samples from a
distribution p in P or from a distribution q in Q and wants to decide from
which set the points were sampled. It is known that the optimal exponential
rate at which errors decrease can be achieved by a simple maximum-likelihood
ratio test which does not depend on p or q, but only on the sets P and Q.
  We consider an adaptive generalization of this model where the choice of p in
P and q in Q can change in each sample in some way that depends arbitrarily on
the previous samples. In other words, in the k'th round, an adversary, having
observed all the previous samples in rounds 1,...,k-1, chooses p_k in P and q_k
in Q, with the goal of confusing the hypothesis test. We prove that even in
this case, the optimal exponential error rate can be achieved by a simple
maximum-likelihood test that depends only on P and Q.
  We then show that the adversarial model has applications in hypothesis
testing for quantum states using restricted measurements. For example, it can
be used to study the problem of distinguishing entangled states from the set of
all separable states using only measurements that can be implemented with local
operations and classical communication (LOCC). The basic idea is that in our
setup, the deleterious effects of entanglement can be simulated by an adaptive
classical adversary.
  We prove a quantum Stein's Lemma in this setting: In many circumstances, the
optimal hypothesis testing rate is equal to an appropriate notion of quantum
relative entropy between two states. In particular, our arguments yield an
alternate proof of Li and Winter's recent strengthening of strong subadditivity
for quantum relative entropy.


title:
First-principles study of spin-transfer torque in Co2MnSi/Al/Co2MnSi
  spin-valve

abstract:
  The spin-transfer torque (STT) in Co2MnSi(CMS)/Al/Co2MnSi spin-valve system
with and without interfacial disorder is studied by a first-principles
noncollinear wave-function-matching method. It is shown that in the case of
clean interface the angular dependence of STT for CoCo/Al (the asymmetry
parameter Lambda approx. 4.5) is more skewed than that for MnSi/Al (Lambda
approx. 2.9), which suggests the clean CoCo/Al architecture is much more
efficient for the application on radio frequency oscillation. We also find that
even with interfacial disorder the spin-valve of half-metallic CMS still has a
relatively large parameter Lambda compared to that of conventional ferromagnet.
In addition, for clean interface the in-plane torkance of MnSi/Al is about
twice as large as that of CoCo/Al. However, as long as the degree of
interfacial disorder is sufficiently large, the CoCo/Al and MnSi/Al will show
approximately the same magnitude of in-plane torkance. Furthermore, our results
demonstrate that CMS/Al/CMS system has very high efficiency of STT to switch
the magnetic layer of spin-valve.


title:
A method for proving the completeness of a list of zeros of certain
  L-functions

abstract:
  When it comes to partial numerical verification of the Riemann Hypothesis,
one crucial part is to verify the completeness of a list of pre-computed zeros.
Turing developed such a method, based on an explicit version of a theorem of
Littlewood on the average of the argument of the Riemann zeta function. In a
previous paper we suggested an alternative method based on the Weil-Barner
explicit formula. This method asymptotically sacrifices fewer zeros in order to
prove the completeness of a list of zeros with imaginary part in a given
interval. In this paper, we prove a general version of this method for an
extension of the Selberg class including Hecke and Artin L-series, L-functions
of modular forms, and, at least in the unramified case, automorphic
L-functions. As an example, we further specify this method for Hecke L-series
and L-functions of elliptic curves over the rational numbers.


title:
Digital breadcrumbs: Detecting urban mobility patterns and transport
  mode choices from cellphone networks

abstract:
  Many modern and growing cities are facing declines in public transport usage,
with few efficient methods to explain why. In this article, we show that urban
mobility patterns and transport mode choices can be derived from cellphone call
detail records coupled with public transport data recorded from smart cards.
Specifically, we present new data mining approaches to determine the spatial
and temporal variability of public and private transportation usage and
transport mode preferences across Singapore. Our results, which were validated
by Singapore's quadriennial Household Interview Travel Survey (HITS), revealed
that there are 3.5 (HITS: 3.5 million) million and 4.3 (HITS: 4.4 million)
million inter-district passengers by public and private transport,
respectively. Along with classifying which transportation connections are weak
or underserved, the analysis shows that the mode share of public transport use
increases from 38 percent in the morning to 44 percent around mid-day and 52
percent in the evening.


title:
Algorithms and Bounds for Drawing Non-planar Graphs with Crossing-free
  Subgraphs

abstract:
  We initiate the study of the following problem: Given a non-planar graph G
and a planar subgraph S of G, does there exist a straight-line drawing {\Gamma}
of G in the plane such that the edges of S are not crossed in {\Gamma} by any
edge of G? We give positive and negative results for different kinds of
connected spanning subgraphs S of G. Moreover, in order to enlarge the subset
of instances that admit a solution, we consider the possibility of bending the
edges of G not in S; in this setting we discuss different trade-offs between
the number of bends and the required drawing area.


title:
An extended Herschel drop-out source in the center of AS1063, a 'normal'
  dusty galaxy at z=6.1 or SZ substructures?

abstract:
  In the course of our 870um APEX/LABOCA follow up of the Herschel Lensing
Survey we have detected a source in AS1063 (RXC J2248.7-4431), that has no
counterparts in any of the Herschel PACS/SPIRE bands, it is a Herschel
'drop-out' with S_870/S_500>0.5. The 870um emission is extended and centered on
the brightest cluster galaxy suggesting either a multiply imaged background
source or substructure in the Sunyaev-Zel'dovich (SZ) increment due to
inhomogeneities in the hot cluster gas of this merging cluster. We discuss both
interpretations with emphasis on the putative lensed source. Based on the
observed properties and on our lens model we find that this source could be the
first SMG with a moderate far infrared luminosity (L_FIR<10^12 L_sol) detected
so far at z>4. In deep HST observations we identified a multiply imaged z~6
source and we measured its spectroscopic redshift z=6.107 with VLT/FORS. This
source could be associated with the putative SMG but it is most likely offset
spatially by 10-30kpc and they could be interacting galaxies. With a FIR
luminosity in the range [5-15]x10^{11} L_sol corresponding to a star formation
rate in the range [80-260]M_sol/yr, this SMG would be more representative than
the extreme starbursts usually detected at z>4. With a total magnification of
~25 it would open a unique window to the 'normal' dusty galaxies at the end of
the epoch of reionization.


title:
An application of the reduction method to Sutherland type many-body
  systems

abstract:
  We study Hamiltonian reductions of the free geodesic motion on a non-compact
simple Lie group using as reduction group the direct product of a maximal
compact subgroup and the fixed point subgroup of an arbitrary involution
commuting with the Cartan involution. In general, we describe the reduced
system that arises upon restriction to a dense open submanifold and interpret
it as a spin Sutherland system. This dense open part yields the full reduced
system in important special examples without spin degrees of freedom, which
include the BC(n) Sutherland system built on 3 arbitrary couplings for m<n
positively charged and (n-m) negatively charged particles moving on the
half-line.


title:
Distributed H-infinity Tracking Control for Discrete-Time Multi-Agent
  Systems with a High-Dimensional Leader

abstract:
  This paper considers the distributed H-infinity leader-following tracking
problem for a class of discrete time multi-agent systems with a
high-dimensional dynamic leader. It is assumed that output information about
the leader is only available to designated followers, and the dynamics of the
followers are subject to perturbations. To achieve distributed H-infinity
leader-following tracking, a new class of control protocols is proposed which
is based on the feedback from the nearest neighbors as well as a distributed
state estimator. Under the assumptions that dynamics of the leader are
detectable and the communication topology contains a directed spanning tree,
sufficient conditions are obtained that enable all followers to track the
leader while achieving a desired H-infinity leader-following tracking
performance. Numerical simulations illustrate the effectiveness of the
theoretical analysis.


title:
Ferromagnetism in a two-component Bose-Hubbard model with a synthetic
  spin-orbit coupling

abstract:
  We study the effect of the synthetic spin-orbit coupling in a two-component
Bose-Hubbard model in one dimension by employing the density-matrix
renormalization group method. A ferromagnetic long-range order emerges in both
Mott insulator and superfluid phases resulting from the spontaneous breaking of
the $Z_2$ symmetry, when the spin-orbit coupling term becomes comparable to the
hopping kinetic energy and the inter-component interaction is smaller than the
intra-one as well. This novel effect is expected to be detectable with the
present realization of the synthetic spin-orbit coupling in experiments.


title: Streamed Graph Drawing and the File Maintenance Problem

abstract:
  In streamed graph drawing, a planar graph, G, is given incrementally as a
data stream and a straight-line drawing of G must be updated after each new
edge is released. To preserve the mental map, changes to the drawing should be
minimized after each update, and Binucci et al.show that exponential area is
necessary and sufficient for a number of streamed graph drawings for trees if
edges are not allowed to move at all. We show that a number of streamed graph
drawings can, in fact, be done with polynomial area, including planar streamed
graph drawings of trees, tree-maps, and outerplanar graphs, if we allow for a
small number of coordinate movements after each update. Our algorithms involve
an interesting connection to a classic algorithmic problem - the file
maintenance problem - and we also give new algorithms for this problem in a
framework where bulk memory moves are allowed.


title: The density in the density of states method

abstract:
  It has been suggested that for QCD at finite baryon density the distribution
of the phase angle, i.e. the angle defined as the imaginary part of the
logarithm of the fermion determinant, has a simple Gaussian form. This
distribution provides the density in the density of states approach to the sign
problem. We calculate this phase angle distribution using i) the hadron
resonance gas model; and ii) a combined strong coupling and hopping parameter
expansion in lattice gauge theory. While the former model leads only to a
Gaussian distribution, in the latter expansion we discover terms which cause
the phase angle distribution to deviate, by relative amounts proportional to
powers of the inverse lattice volume, from a simple Gaussian form. We show that
despite the tiny inverse-volume deviation of the phase angle distribution from
a simple Gaussian form, such non-Gaussian terms can have a substantial impact
on observables computed in the density of states/reweighting approach to the
sign problem.


title: Novel techniques in VUV high-resolution spectroscopy

abstract:
  Novel VUV sources and techniques for VUV spectroscopy are reviewed.
Laser-based VUV sources have been developed via non-linear upconversion of
laser pulses in the nanosecond (ns), the picosecond (ps), and femtosecond (fs)
domain, and are applied in high-resolution gas phase spectroscopic studies.
While the ns and ps pulsed laser sources, at Fourier-transform limited
bandwidths, are used in wavelength scanning spectroscopy, the fs laser source
is used in a two-pulse time delayed mode. In addition a Fourier-transform
spectrometer for high resolution gas-phase spectroscopic studies in the VUV is
described, exhibiting the multiplex advantage to measure many resonances
simultaneously.


title: Energy dissipation of moved magnetic vortices

abstract:
  A two-dimensional easy-plane ferromagnetic substrate, interacting with a
dipolar tip which is magnetised perpendicular with respect to the easy plane is
studied numerically by solving the Landau-Lifshitz Gilbert equation. The
dipolar tip stabilises a vortex structure which is dragged through the system
and dissipates energy. An analytical expression for the friction force in the
v$\rightarrow$0-limit based on the Thiele equation is presented. The
limitations of this result which predicts a diverging friction force in the
thermodynamic limit, are demonstrated by a study of the size dependence of the
friction force. While for small system sizes the dissipation depends
logarithmically on the system size, it saturates at a specific velocity
dependent value. This size can be regarded as an effective vortex size and it
is shown how this effective vortex size agrees with the infinite extension of a
vortex in the thermodynamic limit. A magnetic friction number is defined which
represents a general criterion for the validity of the Thiele equation and
quantifies the degree of nonlinearity in the response of a driven spin
configuration.


title:
An interferometric study of the post-AGB binary 89 Herculis I Spatially
  resolving the continuum circumstellar environment at optical and near-IR
  wavelengths with the VLTI, NPOI, IOTA, PTI, and the CHARA Array

abstract:
  Binary post-AGB stars are interesting laboratories to study both the
evolution of binaries as well as the structure of circumstellar disks. A
multiwavelength high angular resolution study of the prototypical object 89
Herculis is performed with the aim of identifying and locating the different
emission components seen in the SED. A large interferometric data set,
collected over the past decade and covering optical and near-IR wavelengths, is
analyzed with simple geometric models. Combining the interferometric
constraints with the photometry and the optical spectra, we reassess the energy
budget of the post-AGB star and its circumstellar environment. We report the
first (direct) detection of a large (35-40%) optical circumstellar flux
contribution and spatially resolve its emission region. Given this large amount
of reprocessed and/or redistributed optical light, the fitted size of the
emission region is rather compact and fits with(in) the inner rim of the
circumbinary dust disk. This rim dominates our K band data through thermal
emission and is rather compact, emitting significantly already at a radius of
twice the orbital separation. We interpret the circumstellar optical flux as
due to a scattering process, with the scatterers located in the extremely
puffed-up inner rim of the disk and possibly also in a bipolar outflow seen
pole-on. A non-LTE gaseous origin in an inner disk cannot be excluded but is
considered highly unlikely. This direct detection of a significant amount of
circumbinary light at optical wavelengths poses several significant questions
regarding our understanding of both post-AGB binaries and the physics in their
circumbinary disks. Although the identification of the source of
emission/scattering remains inconclusive without further study on this and
similar objects, the implications are manifold.


title: Cryogenic coaxial microwave filters

abstract:
  The careful filtering of microwave electromagnetic radiation is critical for
controlling the electromagnetic environment for experiments in solid-state
quantum information processing and quantum metrology at millikelvin
temperatures. We describe the design and fabrication of a coaxial filter
assembly and demonstrate that its performance is in excellent agreement with
theoretical modelling. We further perform an indicative test of the operation
of the filters by making current-voltage measurements of small, underdamped
Josephson junctions at 15 mK.


title: Hamiltonian Cycle in Semi-Equivelar Maps on the Torus

abstract:
  Semi-Equivelar maps are generalizations of Archimedean solids to the surfaces
other than 2-sphere. There are eight semi-equivelar maps of types
$\{3^{3},4^{2}\}$, $\{3^{2},4,3,4\}$, $\{6,3,6,3\}$, $\{3^{4},6\}$,
$\{4,8^{2}\}$, $\{3,12^{2}\}$, $\{4,6,12\}$, $\{6,4,3,4\}$ exist on the torus.
In this article we show the existence of Hamiltonian cycle in each
semi-equivelar map on the torus except the map of type $\{3,12^{2}\}$. This
result gives the partial solution to the conjecture which is given by
Gr$\ddot{u}$nbaum \cite{grunbaum} and Nash-Williams \cite{nash williams} that
every 4-connected graph on the torus is Hamiltonian.


title:
Reduced-Complexity Semidefinite Relaxations of Optimal Power Flow
  Problems

abstract:
  We propose a new method for generating semidefinite relaxations of optimal
power flow problems. The method is based on chordal conversion techniques: by
dropping some equality constraints in the conversion, we obtain semidefinite
relaxations that are computationally cheaper, but potentially weaker, than the
standard semidefinite relaxation. Our numerical results show that the new
relaxations often produce the same results as the standard semidefinite
relaxation, but at a lower computational cost.


title: Pixelation-free and real-time endoscopic imaging through a fiber bundle

abstract:
  Endoscopy has been an indispensible tool in medical diagnostics, and yet the
demands for reduced unit diameter and enhanced spatial resolution have steadily
been growing for the accurate investigation of distal sites with minimal side
effects. However, the attempts to make use of thin image-guiding media
accompany the degradation in spatial resolution as the micro-optics often
induces aberrations. Here, we present a microendoscope that performs real-time
correction of severe aberrations induced by image-guiding media such as a
bundled fiber. Specifically, we developed a method exploiting the full binary
control of a digital micro-mirror device (DMD) for characterizing the
input-output response of image-guiding media and subsequently compensating the
aberrations. As a proof-of-concept study, we completely eliminated the
pixelation artifact, a severe form of aberration, in endoscopic imaging through
an image fiber bundle and achieved spatial resolution much better than the
diameter of an individual fiber. Our study lays a foundation of applying
extremely thin, but highly aberrant image-guiding media for high-resolution
microendoscopy.


title:
Semilinear fractional elliptic equations with gradient nonlinearity
  involving measures

abstract:
  We study the existence of solutions to the fractional elliptic equation (E1)
$(-\Delta)^\alpha u+\epsilon g(|\nabla u|)=\nu $ in a bounded regular domain
$\Omega$ of $\R^N (N\ge2)$, subject to the condition (E2) $u=0$ in $\Omega^c$,
where $\epsilon=1$ or $-1$, $(-\Delta)^\alpha$ denotes the fractional Laplacian
with $\alpha\in(1/2,1)$, $\nu$ is a Radon measure and $g:\R_+\mapsto\R_+$ is a
continuous function. We prove the existence of weak solutions for problem
(E1)-(E2) when $g$ is subcritical. Furthermore, the asymptotic behavior and
uniqueness of solutions are described when $\nu$ is Dirac mass, $g(s)=s^p$,
$p\geq 1$ and $\epsilon=1$.


title: Discriminative Parameter Estimation for Random Walks Segmentation

abstract:
  The Random Walks (RW) algorithm is one of the most e - cient and easy-to-use
probabilistic segmentation methods. By combining contrast terms with prior
terms, it provides accurate segmentations of medical images in a fully
automated manner. However, one of the main drawbacks of using the RW algorithm
is that its parameters have to be hand-tuned. we propose a novel discriminative
learning framework that estimates the parameters using a training dataset. The
main challenge we face is that the training samples are not fully supervised.
Speci cally, they provide a hard segmentation of the images, instead of a
proba- bilistic segmentation. We overcome this challenge by treating the opti-
mal probabilistic segmentation that is compatible with the given hard
segmentation as a latent variable. This allows us to employ the latent support
vector machine formulation for parameter estimation. We show that our approach
signi cantly outperforms the baseline methods on a challenging dataset
consisting of real clinical 3D MRI volumes of skeletal muscles.


title:
Double diffractive cross-section measurement in the forward region at
  LHC

abstract:
  The first double diffractive cross-section measurement in the very forward
region has been carried out by the TOTEM experiment at the LHC with
center-of-mass energy of sqrt(s)=7 TeV. By utilizing the very forward TOTEM
tracking detectors T1 and T2, which extend up to |eta|=6.5, a clean sample of
double diffractive pp events was extracted. From these events, we measured the
cross-section sigma_DD =(116 +- 25) mub for events where both diffractive
systems have 4.7 <|eta|_min < 6.5 .


title:
Sequences of irreducible polynomials over odd prime fields via elliptic
  curve endomorphisms

abstract:
  In this paper we present and analyse a construction of irreducible
polynomials over odd prime fields via the transforms which take any polynomial
$f \in \mathbf{F}_p[x]$ of positive degree $n$ to $\left(\frac{x}{k} \right)^n
\cdot f(k(x+x^{-1}))$, for some specific values of the odd prime $p$ and $k \in
\mathbf{F}_p$.


title: High-pressure formation and stabilization of iridium hydrides

abstract:
  A class of iridium hydrides, IrH_x (x=0.5, 1-4, 6), is calculated at
ab-initio level using the DFT. A number of hydrides are predicted to stabilize
in the excess hydrogen environment and upon compression. The threshold pressure
for thermodynamical stabilization is calculated to ~5 and ~14 GPa at which,
respectively, a trihydride (P6_3mc) and a dihydride (Ibam) stabilize with
respect to decomposition into pure element. The dihydride (Ibam) is calculated
to stabilize dynamically at P~14 GPa and the trihydride at P > 25 GPa. In both
the di- and trihydride iridium atoms form short directional contacts with
hydrogens, typical for covalent bonds. The trihydride exhibit molecular
character and its relative stability is calculated to be higher than that of
the dihydride, at least up to approx. 75 GPa.


title:
Chirped Frequency Transfer with an accuracy of $10^{-18}$ and its
  Application to the Remote Synchronisation of Timescales

abstract:
  We demonstrate combined high-fidelity long-haul transfer of a linearly
chirped, optical frequency and time transfer. In a proof-of-principle
experiment we transfer an optical frequency with a linear chirp of around 238
kHz/s via a phase-stabilized underground fiber link of 150 km. We find a
fractional frequency transfer instability (Allan deviation, 18000 s averaging
time) and simultaneity of the chirped frequency between both ends on a level of
around $2\times10^{-19}$, where the active phase stabilization suppresses
cumulative, symmetrical effects. In a second step, we demonstrate the remote
measurement of synchronisation taking advantage of chirped-frequency transfer.
The uncertainty of time transfer here is around 500 ps.


title:
J/$\psi$ production and nuclear effects in p-Pb collisions at
  $\sqrt{s_{\rm NN}}=5.02$ TeV

abstract:
  Inclusive J/$\psi$ production has been studied with the ALICE detector in
p-Pb collisions at the nucleon-nucleon center of mass energy $\sqrt{s_{\rm
NN}}$ = 5.02 TeV at the CERN LHC. The measurement is performed in the center of
mass rapidity domains $2.03<y_{\rm cms}<3.53$ and $-4.46<y_{\rm cms}<-2.96$,
down to zero transverse momentum, studying the $\mu^+\mu^-$ decay mode. In this
paper, the J/$\psi$ production cross section and the nuclear modification
factor $R_{\rm pPb}$ for the rapidities under study are presented. While at
forward rapidity, corresponding to the proton direction, a suppression of the
J/$\psi$ yield with respect to binary-scaled pp collisions is observed, in the
backward region no suppression is present. The ratio of the forward and
backward yields is also measured differentially in rapidity and transverse
momentum. Theoretical predictions based on nuclear shadowing, as well as on
models including, in addition, a contribution from partonic energy loss, are in
fair agreement with the experimental results.


title: Pulsed DEMO design assessment studies

abstract:
  Now that ITER is under construction, interest is increasing in the
specification and design of the successor machine, a Demonstration Power Plant
(DEMO), which in Europe is coordinated by the EFDA Power Plant Physics and
Technology programme. This paper summarises the work carried out for EFDA in
2011-2012 on design issues pertinent to a pulsed version of DEMO, intended to
be implemented with little or no extrapolation of technology available today.
The work was carried out by the Euratom Fusion Associations CCFE, CEA, CRPP,
ENEA and KIT, and in addition to a review of recent relevant literature
addressed systems code analyses (pulse length vs. size), erosion of plasma
facing components, thermomechanical fatigue in the blanket and first wall, a
range of energy storage issues, and fatigue life improvements in Nb3Sn CICC
superconductors.


title:
Extension of "Model Parameter Adaptive Approach of Extended Object
  Tracking Using Random Matrix"

abstract:
  This is a draft of summary of multi-model algorithm of extended object
tracking based on random matrix (RMF-MM).


title:
Study of $J/\psi$ production and cold nuclear matter effects in $p$Pb
  collisions at $\sqrt{s_{NN}}=5 \mathrm{TeV}$

abstract:
  The production of $J/\psi$ mesons with rapidity $1.5<y<4.0$ or $-5.0<y<-2.5$
and transverse momentum $p_\mathrm{T}<14 \mathrm{GeV}/c$ is studied with the
LHCb detector in proton-lead collisions at a nucleon-nucleon centre-of-mass
energy $\sqrt{s_{NN}}=5 \mathrm{TeV}$. The analysis is based on a data sample
corresponding to an integrated luminosity of about $1.6 \mathrm{nb}^{-1}$. For
the first time the nuclear modification factor and forward-backward production
ratio are determined separately for prompt $J/\psi$ mesons and $J/\psi$ from
$b$-hadron decays. Clear suppression of prompt $J/\psi$ production with respect
to proton-proton collisions at large rapidity is observed, while the production
of $J/\psi$ from $b$-hadron decays is less suppressed. These results show good
agreement with available theoretical predictions. The measurement shows that
cold nuclear matter effects are important for interpretations of the related
quark-gluon plasma signatures in heavy-ion collisions.


title: Achieving Good Angular Resolution in 3D Arc Diagrams

abstract:
  We study a three-dimensional analogue to the well-known graph visualization
approach known as arc diagrams. We provide several algorithms that achieve good
angular resolution for 3D arc diagrams, even for cases when the arcs must
project to a given 2D straight-line drawing of the input graph. Our methods
make use of various graph coloring algorithms, including an algorithm for a new
coloring problem, which we call localized edge coloring.


title:
Average expansion rate and light propagation in a cosmological Tardis
  spacetime

abstract:
  We construct the first exact statistically homogeneous and isotropic
cosmological solution in which inhomogeneity has a significant effect on the
expansion rate. The universe is modelled as a Swiss Cheese, with dust FRW
background and inhomogeneous holes. We show that if the holes are described by
the quasispherical Szekeres solution, their average expansion rate is close to
the background under certain rather general conditions. We specialise to
spherically symmetric holes and violate one of these conditions. As a result,
the average expansion rate at late times grows relative to the background, i.e.
backreaction is significant. The holes fit smoothly into the background, but
are larger on the inside than a corresponding background domain: we call them
Tardis regions. We study light propagation, find the effective equations of
state and consider the relation of the spatially averaged expansion rate to the
redshift and the angular diameter distance.


title:
Strong converse for the classical capacity of the pure-loss bosonic
  channel

abstract:
  This paper strengthens the interpretation and understanding of the classical
capacity of the pure-loss bosonic channel, first established in [Giovannetti et
al., Physical Review Letters 92, 027902 (2004), arXiv:quant-ph/0308012]. In
particular, we first prove that there exists a trade-off between communication
rate and error probability if one imposes only a mean-photon number constraint
on the channel inputs. That is, if we demand that the mean number of photons at
the channel input cannot be any larger than some positive number N_S, then it
is possible to respect this constraint with a code that operates at a rate
g(\eta N_S / (1-p)) where p is the code's error probability, \eta\ is the
channel transmissivity, and g(x) is the entropy of a bosonic thermal state with
mean photon number x. We then prove that a strong converse theorem holds for
the classical capacity of this channel (that such a rate-error trade-off cannot
occur) if one instead demands for a maximum photon number constraint, in such a
way that mostly all of the "shadow" of the average density operator for a given
code is required to be on a subspace with photon number no larger than n N_S,
so that the shadow outside this subspace vanishes as the number n of channel
uses becomes large. Finally, we prove that a small modification of the
well-known coherent-state coding scheme meets this more demanding constraint.


title: A perturbative QCD study of dijets in p+Pb collisions at the LHC

abstract:
  Inspired by the recent measurements of the CMS collaboration, we report a QCD
study of dijet production in proton+lead collisions at the LHC involving
large-transverse-momentum jets, $p_T \gtrsim 100$ GeV. Examining the inherent
uncertainties of the next-to-leading order perturbative QCD calculations and
their sensitivity to the free proton parton distributions (PDFs), we observe a
rather small, typically much less than 5% clearance for the shape of the dijet
rapidity distribution within approximately 1.5 units around the midrapidity.
Even a more stable observable is the ratio between the yields in the positive
and negative dijet rapidity, for which the baseline uncertainty can be made
negligible by imposing a symmetric jet rapidity acceptance. Both observables
prove sensitive to the nuclear modifications of the gluon distributions, the
corresponding uncertainties clearly exceeding the estimated baseline
uncertainties from the free-proton PDFs and scale dependence. From a
theoretical point of view, these observables are therefore very suitable for
testing the validity of the collinear factorization and have a high potential
to provide precision constraints for the nuclear PDFs.


title:
Multiorbital and hybridization effects in the quasiparticle interference
  of triplet superconductor Sr2RuO4

abstract:
  The tetragonal compound Sr2RuO4 exhibits a chiral p-wave superconducting (SC)
state of its three t2g-type conduction bands. The characteristics of
unconventional gap structure are known from experiment, in particular
field-angle resolved specific heat measurements and from microscopic theories.
A rotated extremal structure on the main active SC band with respect to the
nodal gaps on the passive bands was concluded. We propose that this gap
structure can be further specified by applying the STM- quasiparticle
interference (QPI) method. We calculate the QPI spectrum within a three band
and chiral three gap model and give closed analytical expressions. We show that
as function of bias voltage the chiral three gap model will lead to
characteristic changes in QPI that may be identified and may be used for more
quantitative gap determination of the chiral gap structure.


title:
A linear nonequilibrium thermodynamics approach to optimization of
  thermoelectric devices

abstract:
  Improvement of thermoelectric systems in terms of performance and range of
applications relies on progress in materials science and optimization of device
operation. In this chapter, we focuse on optimization by taking into account
the interaction of the system with its environment. For this purpose, we
consider the illustrative case of a thermoelectric generator coupled to two
temperature baths via heat exchangers characterized by a thermal resistance,
and we analyze its working conditions. Our main message is that both electrical
and thermal impedance matching conditions must be met for optimal device
performance. Our analysis is fundamentally based on linear nonequilibrium
thermodynamics using the force-flux formalism. An outlook on mesoscopic systems
is also given.


title:
Wiretap Channel With Causal State Information and Secure Rate-Limited
  Feedback

abstract:
  In this paper, we consider the secrecy capacity of a wiretap channel in the
presence of causal state information and secure rate-limited feedback. In this
scenario, the causal state information from the channel is available to both
the legitimate transmitter and legitimate receiver. In addition, the legitimate
receiver can send secure feedback to the transmitter at a limited rate Rf . We
shown that the secrecy capacity is bounded. Moreover, when the channel to the
legitimate receiver is less noisy than the channel to the eavesdropper, the
bound is shown to be tight. The capacity achieving scheme is based on both the
Wyner wiretap coding and two steps of shared-key generation: one from the state
information and one via the noiseless feedback. Finally, we consider several
special cases. When state information is available only at the legitimate
receiver, the analysis suggests that unlike previous results involving
feedback, it is better to use the feedback to send the state information to the
transmitter (when possible), rather than send a random key.


title:
Enhanced Tumor Accumulation of Sub-2 nm Gold Nanoclusters for Cancer
  Radiation Therapy

abstract:
  A new type of metabolizable and efficient radiosensitizer for cancer
radiotherapy is presented in this study by combining ultrasmall Au nanoclusters
(NCs, <2 nm) with biocompatible coating ligands (glutathione, GSH). The new
nano-construct (GSH-coated Au25 NCs) inherits attractive features of both the
Au core (strong radiosensitizing effect) and GSH shell (good biocompatibility).
It can preferentially accumulate in tumor via the improved EPR effect, which
leads to strong enhancement for cancer radiotherapy. After the treatment, the
small-sized GSH-Au25 NCs can be efficiently cleared by the kidney, minimizing
any potential side effects due to the accumulation of Au25 NCs in the body.


title: 10 GeV neutralino dark matter and light stau in the MSSM

abstract:
  It has recently been pointed out that a component of the observed gamma ray
emission in the low-latitudes of Fermi Bubble has a spectral shape that can be
explained by a 10 GeV dark matter (DM) annihilating to tau leptons with a
cross-section of 2 x 10^{-27} cm^3/s. Motivated by this possibility, we revisit
the annihilation of a 10 GeV neutralino DM in the MSSM via stau exchange. The
required stau masses and mixing, consistent with LEP direct search and
electroweak precision constraints, are correlated with a possible enhancement
of the Higgs decay rate to two photons. We also explore the implications of
such a scenario for DM relic density and the muon anomalous magnetic moment,
taking into account the recent ATLAS bounds on the chargino and the first two
generation slepton masses, as well as the constraints on the Higgsino fraction
of a 10 GeV neutralino.


title:
Beyond Ohba's Conjecture: A bound on the choice number of $k$-chromatic
  graphs with $n$ vertices

abstract:
  Let $\text{ch}(G)$ denote the choice number of a graph $G$ (also called "list
chromatic number" or "choosability" of $G$). Noel, Reed, and Wu proved the
conjecture of Ohba that $\text{ch}(G)=\chi(G)$ when $|V(G)|\le 2\chi(G)+1$. We
extend this to a general upper bound: $\text{ch}(G)\le
\max\{\chi(G),\lceil({|V(G)|+\chi(G)-1})/{3}\rceil\}$. Our result is sharp for
$|V(G)|\le 3\chi(G)$ using Ohba's examples, and it improves the best-known
upper bound for $\text{ch}(K_{4,\dots,4})$.


title:
Legendre symmetry and first order phase transitions of homogeneous
  systems

abstract:
  In this work we give a characterisation of first order phase transitions as
equilibrium processes on the thermodynamic phase space for which the Legendre
symmetry is broken. Furthermore, we consider generalised theories of
thermodynamics, where the potential is a homogeneous function of any order
$\beta$ and we propose a (contact) Hamiltonian formulation of equilibrium
processes. Indeed we prove that equilibrium corresponds to the zeroth levels of
such function. Using these results we infer that the description in equilibrium
of first order phase transitions is possible only when the potential is a
homogeneous function of order one, unless a generalised Zeroth Law is
postulated in order to allow for equilibrium between sub-parts of the system at
different values of the intensive quantities. Finally, we show the example of
the Tolman-Ehrenfest effect.


title: Higher Spin Cosmology

abstract:
  We construct cosmological solutions of higher spin gravity in 2+1 dimensional
de Sitter space. We show that a consistent thermodynamics can be obtained for
their horizons by demanding appropriate holonomy conditions. This is equivalent
to demanding the integrability of the Euclidean boundary CFT partition
function, and reduces to Gibbons-Hawking thermodynamics in the spin-2 case. By
using a prescription of Maldacena, we relate the thermodynamics of these
solutions to those of higher spin black holes in AdS_3.


title:
Formation and internal structure of superdense dark matter clumps and
  ultracompact minihaloes

abstract:
  We discuss the formation mechanisms and structure of the superdense dark
matter clumps (SDMC) and ultracompact minihaloes (UCMH), outlining the
differences between these types of DM objects. We define as SDMC the
gravitationally bounded DM objects which have come into virial equilibrium at
the radiation-dominated (RD) stage of the universe evolution. Such objects can
be formed from the isocurvature (entropy) density perturbations or from the
peaks in the spectrum of curvature (adiabatic) perturbation. The axion
miniclusters (Kolb and Tkachev 1994) are the example of the former model. The
system of central compact mass (e. g. in the form of SDMC or primordial black
hole (PBH)) with the outer DM envelope formed in the process of secondary
accretion we refer to as UCMH. Therefore, the SDMC can serve as the seed for
the UCMH in some scenarios. Recently, the SDMC and UCMH were considered in the
many works, and we try to systematize them here. We consider also the effect of
asphericity of the initial density perturbation in the gravitational evolution,
which decreases the SDMC amount and, as the result, suppresses the gamma-ray
signal from DM annihilation.


title: Macroscopic Objects, Intrinsic Spin, and Lorentz Violation

abstract:
  The framework of the Standard-Model Extension (SME) provides a relativistic
quantum field theory for the study of Lorentz violation. The classical,
nonrelativistic equations of motion can be extracted as a limit that is useful
in various scenarios. In this work, we consider the effects of certain SME
coefficients for Lorentz violation on the motion of macroscopic objects having
net intrinsic spin in the classical, nonrelativistic limit.


title: Preventing Disclosure of Sensitive Knowledge by Hiding Inference

abstract:
  Data Mining is a way of extracting data or uncovering hidden patterns of
information from databases. So, there is a need to prevent the inference rules
from being disclosed such that the more secure data sets cannot be identified
from non sensitive attributes. This can be done through removing or adding
certain item sets in the transactions Sanitization. The purpose is to hide the
Inference rules, so that the user may not be able to discover any valuable
information from other non sensitive data and any organisation can release all
samples of their data without the fear of Knowledge Discovery In Databases
which can be achieved by investigating frequently occurring item sets, rules
that can be mined from them with the objective of hiding them. Another way is
to release only limited samples in the new database so that there is no
information loss and it also satisfies the legitimate needs of the users. The
major problem is uncovering hidden patterns, which causes a threat to the
database security. Sensitive data are inferred from non-sensitive data based on
the semantics of the application the user has, commonly known as the inference
problem. Two fundamental approaches to protect sensitive rules from disclosure
are that, preventing rules from being generated by hiding the frequent sets of
data items and reducing the importance of the rules by setting their confidence
below a user-specified threshold.


title: Entropy based Anomaly Detection System to Prevent DDoS Attacks in Cloud

abstract:
  Cloud Computing is a recent computing model provides consistent access to
wide area distributed resources. It revolutionized the IT world with its
services provision infrastructure, less maintenance cost, data and service
availability assurance, rapid accessibility and scalability. Grid and Cloud
Computing Intrusion Detection System detects encrypted node communication and
find the hidden attack trial which inspects and detects those attacks that
network based and host based cant identify. It incorporates Knowledge and
behavior analysis to identify specific intrusions. Signature based IDS monitor
the packets in the network and identifies those threats by matching with
database but It fails to detect those attacks that are not included in
database. Signature based IDS will perform poor capturing in large volume of
anomalies. Another problem is that Cloud Service Provider hides the attack that
is caused by intruder, due to distributed nature cloud environment has high
possibility for vulnerable resources. By impersonating legitimate users, the
intruders can use a services abundant resources maliciously. In Proposed System
we combine few concepts which are available with new intrusion detection
techniques. Here to merge Entropy based System with Anomaly detection System
for providing multilevel Distributed Denial of Service. This is done in two
steps: First, Users are allowed to pass through router in network site in that
it incorporates Detection Algorithm and detects for legitimate user. Second,
again it pass through router placed in cloud site in that it incorporates
confirmation Algorithm and checks for threshold value, if its beyond the
threshold value it considered as legitimate user, else its an intruder found in
environment.


title: Scaling functions for systems with finite range of interaction

abstract:
  We present a numerical determination of the scaling functions of the
magnetization, the suscep- tibility, and the Binders cumulant, for two
nonequilibrium model systems with varying range of interactions. We consider
Monte Carlo simulations of the block voter model (BVM) on square lat- tices and
of the majority-vote model (MVM) on random graphs. In both cases, the
satisfactory data collapse obtained for several system sizes and interaction
ranges, supports the hypothesis that these functions are universal. Our
analysis yields an accurate estimation of the long-range exponents, which
govern the decay of the critical amplitudes with the range of interaction, and
is consistent with the assumption that the static exponents are Ising-like for
the BVM and classical for the MVM.


title: Statefinder Diagnostic for Dark Energy Models in Bianchi I Universe

abstract:
  In this paper, we investigate the statefinder, the deceleration and equation
of state parameters when universe is composed of generalized holographic dark
energy or generalized Ricci dark energy for Bianchi I universe model. These
parameters are found for both interacting as well as non-interacting scenarios
of generalized holographic or generalized Ricci dark energy with dark matter
and generalized Chaplygin gas. We explore these parameters graphically for
different situations. It is concluded that these models represent accelerated
expansion of the universe.