title: A Fresnelet-Based Encryption of Medical Images using Arnold Transform

abstract:
  Medical images are commonly stored in digital media and transmitted via
Internet for certain uses. If a medical information image alters, this can lead
to a wrong diagnosis which may create a serious health problem. Moreover,
medical images in digital form can easily be modified by wiping off or adding
small pieces of information intentionally for certain illegal purposes. Hence,
the reliability of medical images is an important criterion in a hospital
information system. In this paper, Fresnelet transform is employed along with
appropriate handling of the Arnold transform and the discrete cosine transform
to provide secure distribution of medical images. This method presents a new
data hiding system in which steganography and cryptography are used to prevent
unauthorized data access. The experimental results exhibit high
imperceptibility for embedded images and significant encryption of information
images.


title:
Adsorption of silicon on Au(110): an ordered two dimensional surface
  alloy

abstract:
  We report on experimental evidence for the formation of a two dimensional
Si/Au(110) surface alloy. In this study, we have used a combination of scanning
tunneling microscopy, low energy electron diffraction, Auger electron
spectroscopy and ab initio calculations based on density functional theory. A
highly ordered and stable Si-Au surface alloy is observed subsequent to growth
of a sub-monolayer of silicon on an Au(110) substrate kept above the eutectic
temperature.


title: A model-free characterization of recurrences in stationary time series

abstract:
  Study of recurrences in earthquakes, climate, financial time-series, etc. is
crucial to better forecast disasters and limit their consequences. However,
almost all the previous phenomenological studies involved only a long-ranged
autocorrelation function, or disregarded the multi-scaling properties induced
by potential higher order dependencies. Consequently, they missed the facts
that non-linear dependences do impact both the statistics and dynamics of
recurrence times, and that scaling arguments for the unconditional distribution
may not be applicable. We argue that copulas is the correct model-free
framework to study non-linear dependencies in time series and related concepts
like recurrences. Fitting and/or simulating the intertemporal distribution of
recurrence intervals is very much system specific, and cannot actually benefit
from universal features, in contrast to the previous claims. This has important
implications in epilepsy prognosis and financial risk management applications.


title: Partial Third-Party Information Exchange with Network Coding

abstract:
  In this paper, we consider the problem of exchanging channel state
information in a wireless network such that a subset of the clients can obtain
the complete channel state information of all the links in the network. We
first derive the minimum number of required transmissions for such partial
third-party information exchange problem. We then design an optimal
transmission scheme by determining the number of packets that each client
should send, and designing a deterministic encoding strategy such that the
subset of clients can acquire complete channel state information of the network
with minimal number of transmissions. Numerical results show that network
coding can efficiently reduce the number of transmissions, even with only
pairwise encoding.


title:
Narrow Band Source of Transform-Limited Photon Pairs via Four-Wave
  Mixing in a Cold Atomic Ensemble

abstract:
  We observe narrowband pairs of time-correlated photons of wavelengths 776\,nm
and 795\,nm from non-degenerate four-wave mixing in a laser-cooled atomic
ensemble of $^{87}${Rb} using a cascade decay scheme. Coupling the photon pairs
into single mode fibers, we observe an instantaneous rate of 7700 pairs per
second with silicon avalanche photodetectors, and an optical bandwidth below
30\,MHz. Detection events exhibit a strong correlation in time
($g^{(2)}(\tau=0)\approx5800$), and a high coupling efficiency indicated by a
pair-to-single ratio of 23%. The violation of the Cauchy-Schwarz inequality by
a factor of $8.4\times10^6$ indicates a strong non-classical correlation
between the generated fields, while a Hanbury--Brown--Twiss experiment in the
individual photons reveals their thermal nature. The narrow bandwidth and
brightness of our source makes it ideal for interacting with atomic ensembles
in quantum communication protocols.


title: Brane compactifications and 4-dimensional geometry in the IKKT model

abstract:
  We study in detail certain brane solutions with compact extra dimensions M^4
x K in the IKKT matrix model, with K being a two-dimensional rotating torus
embedded in R^6. We focus on the compactification moduli and the fluctuations
of K \subset R^6 and their physical significance. Mediated by the Poisson
tensor, they contribute to the effective 4-dimensional metric on the brane, and
thereby become gravitational degrees of freedom. We show that the zero modes
corresponding to the global symmetries of the model lead to Ricci-flat
4-dimensional metric perturbations, wherever the energy-momentum tensor
vanishes. Their coupling to the energy momentum tensor depends on the extrinsic
curvature of the brane.


title:
Identification of 12 High Mass X-Ray Binaries detected by INTEGRAL
  through NIR photometry and spectroscopy

abstract:
  Since it started observing the sky, the INTEGRAL satellite has revealed new
categories of High Mass X-ray binaries in our Galaxy. These observations raise
important questions on the formation and evolution of such rare and
short-living objects. We present here new observations that enable us to reveal
or constrain the nature of 15 new INTEGRAL sources. After previous photometric
and spectroscopic campaigns of observations in optical and near infrared, new
spectroscopy and photometry were performed at ESO in optical/NIR with EMMI and
SOFI on the NTT in 2008 and 2010 on a sample of INTEGRAL sources. These
observations and precisely the detection of specific features in their spectra
allow the identification of such high-energy objects. Our results indicate
that: 6 of these objects are Be High-Mass X-ray Binaries (BeHMXBs), 6 are
Supergiant High-Mass X-ray Binaries (sgHMXBs) and 3 are still unidentified and
need higher resolution data to be completely unveiled.


title: Unextendible Mutually Unbiased Bases from Pauli Classes

abstract:
  We provide a construction of sets of (d/2+1) mutually unbiased bases (MUBs)
in dimensions d=4,8 using maximal commuting classes of Pauli operators. We show
that these incomplete sets cannot be extended further using the operators of
the Pauli group. However, specific examples of sets of MUBs obtained using our
construction are shown to be strongly unextendible; that is, there does not
exist another vector that is unbiased with respect to the elements in the set.
We conjecture the existence of such unextendible sets in higher dimensions
(d=2^{n}, n>3) as well. Furthermore, we note an interesting connection between
these unextendible sets and state-independent proofs of the Kochen-Specker
Theorem for two-qubit systems. Our construction also leads to a proof of the
tightness of a H_{2} entropic uncertainty relation for any set of three MUBs
constructed from Pauli classes in d=4.


title:
The Physics probed by the P_T Dependence of the Nuclear Suppression
  Factor

abstract:
  The nuclear suppression factor R_AA of single inclusive hadrons measured in
ultrarelativistic heavy-ion collisions was the first observable to study jet
quenching, i.e. the final state interaction of hard parton showers with the
surrounding bulk matter. While its transverse momentum (P_T) dependence of R_AA
observed at RHIC was weak and hence never decisive in constraining models,
there is now a strong and non-trivial P_T dependence observed at the LHC. This
has been a challenge for several models which worked well at RHIC kinematics.
However, in more general terms it is also of importance to understand what
physical properties of the hard process and the parton-medium interaction are
reflected in R_AA(P_T). The results of the work presented here suggest that the
two main effects underlying the P_T dependence are the Quantum-Chromodynamics
scale evolution of the fragmentation function and the limited distance (set by
the typical medium length scale) for which a shower evolves in the medium.


title: The Boardman-Vogt tensor product of operadic bimodules

abstract:
  We define and study a lift of the Boardman-Vogt tensor product of operads to
bimodules over operads.


title:
A fingerprint of surface-tension anisotropy in the free-energy cost of
  nucleation

abstract:
  We focus on the Gibbs free energy $\Delta G$ for nucleating a droplet of the
stable phase (e.g. solid) inside the metastable parent phase (e.g. liquid),
close to the first-order transition temperature. This quantity is central to
the theory of homogeneous nucleation, since it superintends the nucleation
rate. We recently introduced a field theory describing the dependence of
$\Delta G$ on the droplet volume $V$, taking into account besides the
microscopic fuzziness of the droplet-parent interface, also small fluctuations
around the spherical shape whose effect, assuming isotropy, was found to be a
characteristic logarithmic term. Here we extend this theory, introducing the
effect of anisotropy in the surface tension, and show that in the limit of
strong anisotropy $\Delta G(V)$ once more develops a term logarithmic on $V$,
now with a prefactor of opposite sign with respect to the isotropic case. Based
on this result, we argue that the geometrical shape that large solid nuclei
mostly prefer could be inferred from the prefactor of the logarithmic term in
the droplet free energy, as determined from the optimization of its
near-coexistence profile.


title: Phenomenology of charged scalars in the CP-Violating Inert-Doublet Model

abstract:
  We study the production and decay of charged scalars, eta^\pm, in the context
of a CP-Violating Inert-Doublet Model. The model is an extended version of the
Inert Doublet Model with an extra Higgs doublet and provides new sources of CP
violation and a dark matter candidate. As compared with the 2HDM, the particle
spectrum contains two additional neutral scalars and a charged pair. These
particles are subject to a Z_2 symmetry, but can be pair-produced in hadronic
collisions. If a charged scalar is included in the pair, it decays to the
stable dark-matter candidate (i.e., the lightest neutral inert scalar) plus
Standard Model matter that consists of either two jets or a single lepton (from
a virtual or real W or Z) plus missing transverse energy. Since the single
production channel is available only at hadronic colliders, we consider the
Large Hadron Collider environment, hence we discuss experimental perspectives
and possible hallmarks of the model, such as events with a displaced vertex.


title:
Interface currents in topological superconductor-ferromagnet
  heterostructures

abstract:
  We propose the existence of a substantial charge current parallel to the
interface between a noncentrosymmetric superconductor and a metallic
ferromagnet. Our analysis focuses upon two complementary
orbital-angular-momentum pairing states of the superconductor, exemplifying
topologically nontrivial states which are gapped and gapless in the bulk,
respectively. Utilizing a quasiclassical scattering theory, we derive an
expression for the interface current in terms of Andreev reflection
coefficients. Performing a systematic study of the current, we find stark
qualitative differences between the gapped and gapless superconductors, which
reflect the very different underlying topological properties. For the fully
gapped superconductor, there is a sharp drop in the zero-temperature current as
the system is tuned from a topologically nontrivial to a trivial phase. We
explain this in terms of the sudden disappearance of the contribution to the
current from the subgap edge states at the topological transition. The current
in the gapless superconductor is characterized by a dramatic enhancement at low
temperatures, and exhibits a singular dependence on the exchange-field strength
in the ferromagnetic metal at zero temperature. This is caused by the energy
shift of the strongly spin-polarized nondegenerate zero-energy flat bands due
to their coupling to the exchange field. We argue that the interface current
provides a novel test of the topology of the superconductor, and discuss
prospects for the experimental verification of our predictions.


title:
Synthetic photometry for carbon-rich giants. III. Tracing the sequence
  of mass-losing galactic C-type Miras

abstract:
  With the help of model calculations we aim at reproducing the observational
photometric findings for a large sample of well-characterised galactic C-type
Mira variables losing mass at different rates. We used dynamic model
atmospheres, describing the outer layers of C-rich Miras, which are severly
affected by dynamic effects. Based on the resulting structures and under the
assumptions of chemical equilibrium as well as LTE, we computed synthetic
spectra and synthetic broad-band photometry (Johnson-Cousins-Glass). A set of
five representative models with different stellar parameters describes a
sequence from less to more evolved objects with steadily increasing mass-loss
rates. This allowed us to study the significant influence of circumstellar dust
on the spectral energy distributions and the (amplitudes of) lightcurves in
different filters. We tested the photometric properties (mean NIR magnitudes,
colours, and amplitudes) and other characteristics of the models (mass-loss
rates, periods, and bolometric corrections) by comparing these with the
corresponding observational data adopted from the literature. Using different
kinds of diagrams we illustrate where the models are located in a supposed
evolutionary sequence defined by observed C-type Mira samples. Based on
comparisons of galactic targets with empirical relations derived for C stars in
the Large Magellanic Cloud we discuss the relevance of metallicity and excess
carbon (C--O) for the development of dust-driven winds. Having investigated the
dynamic model atmospheres from different (mainly photometric) perspectives, we
conclude that our modelling approach (meaning the combination of numerical
method and a suitable choice of model parameters) is able to describe C-rich
long-period variables over a wide range of mass-loss rates, i.e., from
moderately pulsating objects without any dusty wind to highly dust-enshrouded
Carbon Miras.


title: Around multivariate Schmidt-Spitzer theorem

abstract:
  Given an arbitrary complex-valued infinite matrix A and a positive integer n
we introduce a naturally associated polynomial basis B_A of C[x0...xn]. We
discuss some properties of the locus of common zeros of all polynomials in B_A
having a given degree m; the latter locus can be interpreted as the spectrum of
the m*(m+n)-submatrix of A formed by its m first rows and m+n first columns. We
initiate the study of the asymptotics of these spectra when m goes to infinity
in the case when A is a banded Toeplitz matrix. In particular, we present and
partially prove a conjectural multivariate analog of the well-known
Schmidt-Spitzer theorem which describes the spectral asymptotics for the
sequence of principal minors of an arbitrary banded Toeplitz matrix. Finally,
we discuss relations between polynomial bases B_A and multivariate orthogonal
polynomials.


title: Mixed quasi-\'etale quotients with arbitrary singularities

abstract:
  A mixed quasi-\'etale quotient is the quotient of the product of a curve of
genus at least 2 with itself by the action of a group which exchanges the two
factors and acts freely out of a finite subset. A mixed quasi-\'etale surface
is the minimal resolution of its singularities.
  We produce an algorithm computing all mixed quasi-\'etale surfaces with given
geometric genus, irregularity, and self-intersection of the canonical class. We
prove that all irregular mixed quasi-\'etale surfaces of general type are
minimal.
  As application, we classify all irregular mixed quasi \'etale surfaces of
general type with genus equal to the irregularity, and all the regular ones
with K^2>0, thus constructing new examples of surfaces of general type with
\chi=1. We mention the first example of a minimal surface of general type with
p_g=q=1 and Albanese fibre of genus bigger than K^2.


title:
New insights into the semiclassical Wigner treatment of
  photodissociation dynamics

abstract:
  The \emph{semiclassical Wigner treatment} of Brown and Heller [J. Chem. Phys.
75, 186 (1981)] is applied to triatomic direct photodissociations with the aim
of accurately predicting final state distributions at relatively low
computational cost, and having available a powerful interpretative tool. For
the first time, the treatment is full-dimensional. The proposed formulation
closely parallels the quantum description as far as possible. An approximate
version is proposed, which is still accurate while numerically much more
efficient. In addition to be weighted by usual vibrational Wigner
distributions, final phase space states appear to be weighted by new
\emph{rotational Wigner distributions}. These densities have remarkable
structures clearly showing that classical trajectories most contributing to
rotational state $j$ are those reaching the products with a rotational angular
momentum close to $[j(j+1)]^{1/2}$ (in $\hbar$ unit). The previous methods
involve running trajectories from the reagent molecule onto the products. The
alternative \emph{backward approach} [L. Bonnet, J. Chem. Phys. 133, 174108
(2010)], in which trajectories are run in the reverse direction, is shown to
strongly improve the numerical efficiency of the most rigorous method in
addition to be \emph{state-selective}, and thus, ideally suited to the
description of state-correlated distributions measured in velocity imaging
experiments. The results obtained by means of the previous methods are compared
with rigorous quantum results in the case of Guo's triatomic-like model of
methyl iodide photodissociation [J. Chem. Phys. 96, 6629 (1992)] and an
astonishing agreement is found. In comparison, the standard method of Goursaud
\emph{et al.} [J. Chem. Phys. 65, 5453 (1976)] is only semi-quantitative.


title:
On the limits of the effective description of hyperbolic materials in
  presence of surface waves

abstract:
  Hyperbolic materials are artificially engineered composite media which allow
innovative optical properties that could lead to significant advances in
numerous breakthrough technologies. However, these properties are
conventionally studied by means of an effective medium theory. But this one is
specifically well adapted to describe the optical behaviour of composite
materials in the far field region. Here, we adress the question of the validity
of such an approach in the near field region. We show that the presence of
localized modes such as resonant surface waves drastically limits the validity
of the effective description and requires revisiting the concept of
homogenization in near-field. In particular we demonstrate from exact
calculations that one can find surface modes in spectral regions where the
effective medium theory predicts hyperbolic modes only. Hence, the presence of
surface modes which are not accounted for in the effective medium theory can
lead to physical misinterpretations in the description of hyperbolic materials
and their related properties.


title:
Energy-aware checkpointing of divisible tasks with soft or hard
  deadlines

abstract:
  In this paper, we aim at minimizing the energy consumption when executing a
divisible workload under a bound on the total execution time, while resilience
is provided through checkpointing. We discuss several variants of this
multi-criteria problem. Given the workload, we need to decide how many chunks
to use, what are the sizes of these chunks, and at which speed each chunk is
executed. Furthermore, since a failure may occur during the execution of a
chunk, we also need to decide at which speed a chunk should be re-executed in
the event of a failure. The goal is to minimize the expectation of the total
energy consumption, while enforcing a deadline on the execution time, that
should be met either in expectation (soft deadline), or in the worst case (hard
deadline). For each problem instance, we propose either an exact solution, or a
function that can be optimized numerically. The different models are then
compared through an extensive set of experiments.


title:
Thompson Sampling in Switching Environments with Bayesian Online Change
  Point Detection

abstract:
  Thompson Sampling has recently been shown to be optimal in the Bernoulli
Multi-Armed Bandit setting[Kaufmann et al., 2012]. This bandit problem assumes
stationary distributions for the rewards. It is often unrealistic to model the
real world as a stationary distribution. In this paper we derive and evaluate
algorithms using Thompson Sampling for a Switching Multi-Armed Bandit Problem.
We propose a Thompson Sampling strategy equipped with a Bayesian change point
mechanism to tackle this problem. We develop algorithms for a variety of cases
with constant switching rate: when switching occurs all arms change (Global
Switching), switching occurs independently for each arm (Per-Arm Switching),
when the switching rate is known and when it must be inferred from data. This
leads to a family of algorithms we collectively term Change-Point Thompson
Sampling (CTS). We show empirical results of the algorithm in 4 artificial
environments, and 2 derived from real world data; news click-through[Yahoo!,
2011] and foreign exchange data[Dukascopy, 2012], comparing them to some other
bandit algorithms. In real world data CTS is the most effective.


title: The number of binary rotation words

abstract:
  We consider binary rotation words generated by partitions of the unit circle
to two intervals and give a precise formula for the number of such words of
length n. We also give the precise asymptotics for it, which happens to be
O(n^4). The result continues the line initiated by the formula for the number
of all Sturmian words obtained by Lipatov in 1982, then independently by
Berenstein, Kanal, Lavine and Olson in 1987, Mignosi in 1991, and then with
another technique by Berstel and Pocchiola in 1993.


title: Computing preimages of Boolean Networks

abstract:
  In this paper we present an algorithm to address the predecessor problem of
feed-forward Boolean networks. We propose an probabilistic algorithm, which
solves this problem in linear time with respect to the number of nodes in the
network. Finally, we evaluate our algorithm for random Boolean networks and the
regulatory network of Escherichia coli.


title:
Coherent Population Trapping Resonances in Buffer Gas-filled Cs Vapor
  Cells with Push-Pull Optical Pumping

abstract:
  We report on a theoretical study and experimental characterization of
coherent population trapping (CPT) resonances in buffer gas-filled vapor cells
with push-pull optical pumping (PPOP) on Cs D1 line. We point out that the
push-pull interaction scheme is identical to the so-called lin per lin
polarization scheme. Expressions of the relevant dark states, as well as of
absorption, are reported. The experimental setup is based on the combination of
a distributed feedback (DFB) diode laser, a pigtailed intensity Mach-Zehnder
electro-optic modulator (MZ EOM) for optical sidebands generation and a
Michelson-like interferometer. A microwave technique to stabilize the transfer
function operating point of the MZ EOM is implemented for proper operation. A
CPT resonance contrast as high as 78% is reported in a cm-scale cell for the
magnetic-field insensitive clock transition. The impact of the laser intensity
on the CPT clock signal key parameters (linewidth - contrast -
linewidth/contrast ratio) is reported for three different cells with various
dimensions and buffer gas contents. The potential of the PPOP technique for the
development of high-performance atomic vapor cell clocks is discussed.


title: Thermal phase transitions in Artificial Spin-Ice

abstract:
  We use the sixteen vertex model to describe bi-dimensional artificial spin
ice (ASI). We find excellent agreement between vertex densities in fifteen
differently grown samples and the predictions of the model. Our results
demonstrate that the samples are in usual thermal equilibrium away from a
critical point separating a disordered and an anti-ferromagnetic phase in the
model. The second-order phase transition that we predict suggests that the
spatial arrangement of vertices in near-critical ASI should be studied in more
detail in order to verify whether they show the expected space and time
long-range correlations.


title:
Improved upper and lower bound techniques for monotone switching
  networks for directed connectivity

abstract:
  In this paper, we analyze the monotone space of complexity of directed
connectivity for a large class of input graphs $G$ using the switching network
model. The upper and lower bounds we obtain are a significant generalization of
previous results and the proofs involve several completely new techniques and
ideas.


title: spo(2|2)-Equivariant Quantizations on the Supercircle $S^{1|2}$

abstract:
  We consider the space of differential operators $\mathcal{D}_{\lambda\mu}$
acting between $\lambda$- and $\mu$-densities defined on $S^{1|2}$ endowed with
its standard contact structure. This contact structure allows one to define a
filtration on $\mathcal{D}_{\lambda\mu}$ which is finer than the classical one,
obtained by writting a differential operator in terms of the partial
derivatives with respect to the different coordinates. The space
$\mathcal{D}_{\lambda\mu}$ and the associated graded space of symbols
$\mathcal{S}_{\delta}$ ($\delta=\mu-\lambda$) can be considered as
$\mathfrak{spo}(2|2)$-modules, where $\mathfrak{spo}(2|2)$ is the Lie
superalgebra of contact projective vector fields on $S^{1|2}$. We show in this
paper that there is a unique isomorphism of $\mathfrak{spo}(2|2)$-modules
between $\mathcal{S}_{\delta}$ and $\mathcal{D}_{\lambda\mu}$ that preserves
the principal symbol (i.e. an $\mathfrak{spo}(2|2)$-equivariant quantization)
for some values of $\delta$ called non-critical values. Moreover, we give an
explicit formula for this isomorphism, extending in this way the results of
[Mellouli N., SIGMA 5 (2009), 111, 11 pages, arXiv:0912.5190] which were
established for second-order differential operators. The method used here to
build the $\mathfrak{spo}(2|2)$-equivariant quantization is the same as the one
used in [Mathonet P., Radoux F., Lett. Math. Phys. 98 (2011), 311-331,
arXiv:1003.3320] to prove the existence of a
$\mathfrak{pgl}(p+1|q)$-equivariant quantization on $\mathbb{R}^{p|q}$.


title:
Asteroseismic determination of obliquities of the exoplanet systems
  Kepler-50 and Kepler-65

abstract:
  Results on the obliquity of exoplanet host stars -- the angle between the
stellar spin axis and the planetary orbital axis -- provide important
diagnostic information for theories describing planetary formation. Here we
present the first application of asteroseismology to the problem of stellar
obliquity determination in systems with transiting planets and Sun-like host
stars. We consider two systems observed by the NASA Kepler Mission which have
multiple transiting small (super-Earth sized) planets: the previously reported
Kepler-50 and a new system, Kepler-65, whose planets we validate in this paper.
Both stars show rich spectra of solar-like oscillations. From the asteroseismic
analysis we find that each host has its rotation axis nearly perpendicular to
the line of sight with the sines of the angles constrained at the 1-sigma level
to lie above 0.97 and 0.91, respectively. We use statistical arguments to show
that coplanar orbits are favoured in both systems, and that the orientations of
the planetary orbits and the stellar rotation axis are correlated.


title: Koszul duality theory for operads over Hopf algebras

abstract:
  The transfer of the generating operations of an algebra to a homotopy
equivalent chain complex produces higher operations. The first goal of this
paper is to describe precisely the higher structure obtained when the unary
operations commute with the contracting homotopy. To solve this problem, we
develop the Koszul duality theory of operads in the category of modules over a
cocommutative Hopf algebra. This gives rise to a simpler category of homotopy
algebras and infinity-morphisms, which allows us to get a new description of
the homotopy category of algebras over such operads. The main example of this
theory is given by Batalin-Vilkovisky algebras.


title:
Non-universal parameters, corrections and universality in
  Kardar-Parisi-Zhang growth

abstract:
  We present a comprehensive numerical investigation of non-universal
parameters and corrections related to interface fluctuations of models
belonging to the Kardar-Parisi-Zhang (KPZ) universality class, in d=1+1, for
both flat and curved geometries. We analyzed two classes of models. In the
isotropic models the non-universal parameters are uniform along the surface,
whereas in the anisotropic growth they vary. In the latter case, that produces
curved surfaces, the statistics must be computed independently along fixed
directions. The ansatz h = v t + (\Gamma t)^{1/3} \chi + \eta, where \chi is a
Tracy-Widom (geometry-dependent) distribution and \eta is a time-independent
correction, is probed. Our numerical analysis shows that the non-universal
parameter \Gamma determined through the first cumulant leads to a very good
accordance with the extended KPZ ansatz for all investigated models in contrast
with the estimates of \Gamma obtained from higher order cumulants that indicate
a violation of the generalized ansatz for some of the studied models. We
associate the discrepancies to corrections of unknown nature, which hampers an
accurate estimation of \Gamma at finite times. The discrepancies in \Gamma via
different approaches are relatively small but sufficient to modify the scaling
law t^{-1/3} that characterize the finite-time corrections due to \eta. Among
the investigated models, we have revisited an off-lattice Eden model that
supposedly disobeyed the shift in the mean scaling as t^{-1/3} and showed that
there is a crossover to the expected regime. We have found model-dependent
(non-universal) corrections for cumulants of order n > 1. All investigated
models are consistent with a further term of order t^{-1/3} in the KPZ ansatz.


title:
Jacob's ladders, conjugate integrals, external mean-values and other
  properties of a multiply $\pi(T)$-autocorrelation of the function $|\zf|^2$

abstract:
  In this paper we obtain a new class of transformation formulae (without an
explicit presence of a derivative) for the integrals containing products of
factors $|\zf|^2$ with respect to two components of a disconnected set on the
critical line.


title:
The Minimal and the New Minimal Supersymmetric Grand Unified Theories on
  Noncommutative Space-time

abstract:
  We construct noncommutative versions of both the minimal and the new minimal
supersymmetric Grand Unified Theories. The enveloping-algebra formalism is used
to carry out such constructions. The beautiful formulation of the Higgs sector
of these noncommutative theories is a consequence of fact that, in the GUTs at
hand, the ordinary Higgs fields can be realized as elements of the Clifford
algebra Cl10(C). In the noncommutative supersymmetric GUTs we formulate,
supersymmetry is linearly realized by the noncommutative fields; but it is not
realized by the ordinary fields that define those noncommutative fields via the
Seiberg-Witten map.


title: Hyperbolic metamaterial lens with hydrodynamic nonlocal response

abstract:
  We investigate the effects of hydrodynamic nonlocal response in hyperbolic
metamaterials (HMMs), focusing on the experimentally realizable parameter
regime where unit cells are much smaller than an optical wavelength but much
larger than the wavelengths of the longitudinal pressure waves of the
free-electron plasma in the metal constituents. We derive the nonlocal
corrections to the effective material parameters analytically, and illustrate
the noticeable nonlocal effects on the dispersion curves numerically. As an
application, we find that the focusing characteristics of a HMM lens in the
local-response approximation and in the hydrodynamic Drude model can differ
considerably. Interestingly, sometimes the nonlocal theory predicts
significantly better focusing. Thus, to detect whether nonlocal response is at
work in a hyperbolic metamaterial, we propose to measure the near-field
distribution of a hyperbolic metamaterial lens.


title: Wavelet methods in multi-conjugate adaptive optics

abstract:
  The next generation ground-based telescopes rely heavily on adaptive optics
for overcoming the limitation of atmospheric turbulence. In the future adaptive
optics modalities, like multi-conjugate adaptive optics (MCAO), atmospheric
tomography is the major mathematical and computational challenge. In this
severely ill-posed problem a fast and stable reconstruction algorithm is needed
that can take into account many real-life phenomena of telescope imaging. We
introduce a novel reconstruction method for the atmospheric tomography problem
and demonstrate its performance and flexibility in the context of MCAO. Our
method is based on using locality properties of compactly supported wavelets,
both in the spatial and frequency domain. The reconstruction in the atmospheric
tomography problem is obtained by solving the Bayesian MAP estimator with a
conjugate gradient based algorithm. An accelerated algorithm with
preconditioning is also introduced. Numerical performance is demonstrated on
the official end-to-end simulation tool OCTOPUS of European Southern
Observatory.


title: Equatorial trench at the magnetopause under saturation

abstract:
  Magnetic data from GOES geosynchronous satellites were applied for
statistical study of the low-latitude dayside magnetopause under a strong
interplanetary magnetic field of southward orientation when the reconnection at
the magnetopause was saturated. From minimum variance analysis, we determined
the magnetopause orientation and compared it with predictions of a reference
model. The magnetopause shape was found to be substantially distorted by a
duskward shifting such that the nose region appeared in the postnoon sector. At
equatorial latitudes, the shape of magnetopause was characterized by a
prominent bluntness and by a trench formed in the postnoon sector. The origin
of distortions was regarded in the context of the storm-time magnetospheric
currents and the large-scale quasi-state reconnection at the dayside
magnetopause.


title:
Irreducibility of the moduli space of stable vector bundles of rank two
  and odd degree on a very general quintic surface

abstract:
  The moduli space $M(c_2)$, of stable rank two vector bundles of degree one on
a very general quintic surface $X\subset {\mathbb P}^3$, is irreducible for all
$c_2\geq 4$ and empty otherwise.


title: Actions of groups of homeomorphisms on one-manifolds

abstract:
  In this article, we describe all the group morphisms from the group of
compactly-supported homeomorphisms isotopic to the identity of a manifold to
the group of homeomorphisms of the real line or of the circle.


title: On the free Gamma distributions

abstract:
  For each positive number $\alpha$ we study the analog $\nu_alpha$ in free
probability of the classical Gamma distribution with parameter $\alpha$. We
prove that $\nu_\alpha$ is absolutely continuous and establish the main
properties of the density, including analyticity and unimodality. We study
further the asymptotic behavior of $\nu_\alpha$ as $\alpha\downarrow0$.


title:
The mass of the b-quark from lattice NRQCD and lattice perturbation
  theory

abstract:
  We present a determination of the b-quark mass accurate through O(\alpha_s^2)
in perturbation theory and including partial contributions at O(\alpha_s^3).
Nonperturbative input comes from the calculation of the Upsilon and B_s
energies in lattice QCD including the effect of u, d and s sea quarks. We use
an improved NRQCD action for the b-quark. This is combined with the heavy quark
energy shift in NRQCD determined using a mixed approach of high-beta simulation
and automated lattice perturbation theory. Comparison with experiment enables
the quark mass to be extracted: in the MS bar scheme we find m_b(m_b) =
4.166(43) GeV.


title:
Strong approximations for long memory sequences based partial sums,
  counting and their Vervaat processes

abstract:
  We study the asymptotic behaviour of partial sums of long range dependent
random variables and that of their counting process, together with an
appropriately normalized integral process of the sum of these two processes,
the so-called Vervaat process. The first two of these processes are
approximated by an appropriately constructed fractional Brownian motion, while
the Vervaat process in turn is approximated by the square of the same
fractional Brownian motion.


title:
Upper bounds for Newton's method on monotone polynomial systems, and
  P-time model checking of probabilistic one-counter automata

abstract:
  A central computational problem for analyzing and model checking various
classes of infinite-state recursive probabilistic systems (including
quasi-birth-death processes, multi-type branching processes, stochastic
context-free grammars, probabilistic pushdown automata and recursive Markov
chains) is the computation of {\em termination probabilities}, and computing
these probabilities in turn boils down to computing the {\em least fixed point}
(LFP) solution of a corresponding {\em monotone polynomial system} (MPS) of
equations, denoted x=P(x).
  It was shown by Etessami & Yannakakis that a decomposed variant of Newton's
method converges monotonically to the LFP solution for any MPS that has a
non-negative solution. Subsequently, Esparza, Kiefer, & Luttenberger obtained
upper bounds on the convergence rate of Newton's method for certain classes of
MPSs. More recently, better upper bounds have been obtained for special classes
of MPSs. However, prior to this paper, for arbitrary (not necessarily
strongly-connected) MPSs, no upper bounds at all were known on the convergence
rate of Newton's method as a function of the encoding size |P| of the input
MPS, x=P(x).
  In this paper we provide worst-case upper bounds, as a function of both the
input encoding size |P|, and epsilon > 0, on the number of iterations required
for decomposed Newton's method (even with rounding) to converge within additive
error epsilon > 0 of q^*, for any MPS with LFP solution q^*. Our upper bounds
are essentially optimal in terms of several important parameters.
  Using our upper bounds, and building on prior work, we obtain the first
P-time algorithm (in the standard Turing model of computation) for quantitative
model checking, to within desired precision, of discrete-time QBDs and
(equivalently) probabilistic 1-counter automata, with respect to any (fixed)
omega-regular or LTL property.


title:
Direct CP violation in non-leptonic charm decays: Implications for new
  physics

abstract:
  I review the implications of recent measurements of CP violation in D meson
decays in the context of standard model extensions. Using effective theory
methods, one can derive significant constraints on the possible non-standard
contributions from measurements of neutral D meson mixing and direct CP
violation in kaon decays. Due to an approximate universality of CP violation in
new physics scenarios which only break the SU(3)_Q flavor symmetry of the
standard model kinetic Lagrangian, such contributions are particularly
constrained by epsilon'/epsilon. Explanations of the observed effect within
several explicit well-motivated new physics frameworks are briefly discussed.
Finally, possible future experimental tests able to distinguish standard vs.
non-standard explanations of the observed CP violation in the charm sector are
mentioned.


title:
Effect of sonic poloidal flows in determining flow and density
  asymmetries for trace impurities in the tokamak edge pedestal

abstract:
  The structure of poloidal and toroidal flows of trace impurities in the edge
pedestal of tokamak plasmas is studied analytically and numerically. Parallel
momentum balance is analysed upon retaining the following terms: poloidal and
toroidal centrifugal forces (inertia), pressure force, electric force, and the
friction force. It is shown that, when the poloidal flow is such to produce a
properly defined Mach number of order unity somewhere on the flux surface,
shock fronts can form. The shock fronts can modify the predicted asymmetry
structures in both the flow and the density profile along the poloidal arc.
Predictions of the theory are shown against experimental observations in the
ASDEX Upgrade tokamak, showing good qualitative and quantitative agreement if
the inertia term associated with the poloidal flow is retained.


title:
Local theta lifting of generalized Whittaker models associated to
  nilpotent orbits

abstract:
  Let $(G,\tilde{G})$ be a reductive dual pair over a local field ${\Fontauri
k}$ of characteristic 0, and denote by $V$ and $\tilde{V}$ the standard modules
of $G$ and $\tilde{G}$, respectively. Consider the set $Max Hom(V,\tilde{V})$
of full rank elements in $Hom(V,\tilde{V})$, and the nilpotent orbit
correspondence $\mathcal{O} \subset \mathfrak{g}$ and $\Theta
(\mathcal{O})\subset \tilde{\mathfrak{g}}$ induced by elements of $Max
Hom(V,\tilde{V})$ via the moment maps. Let $(\pi,\mathscr{V})$ be a smooth
irreducible representation of $G$. We show that there is a correspondence of
the generalized Whittaker models of $\pi $ of type $\mathcal{O}$ and of $\Theta
(\pi)$ of type $\Theta (\mathcal{O})$, where $\Theta (\pi)$ is the full theta
lift of $\pi $. When $(G,\tilde{G})$ is in the stable range with $G$ the
smaller member, every nilpotent orbit $\mathcal{O} \subset \mathfrak{g}$ is in
the image of the moment map from $Max Hom (V,\tilde{V})$. In this case, and for
${\Fontauri k}$ non-Archimedean, the result has been previously obtained by
M\oe{}glin in a different approach.


title: Ion sources for high-power hadron accelerators

abstract:
  Ion sources are a critical component of all particle accelerators. They
create the initial beam that is accelerated by the rest of the machine. This
paper will introduce the many methods of creating a beam for high-power hadron
accelerators. A brief introduction to some of the relevant concepts of plasma
physics and beam formation is given. The different types of ion source used in
accelerators today are examined. Positive ion sources for producing H+ ions and
multiply charged heavy ions are covered. The physical principles involved with
negative ion production are outlined and different types of negative ion
sources are described. Cutting edge ion source technology and the techniques
used to develop sources for the next generation of accelerators are discussed.


title:
Adsorption and absorption of Boron, Nitrogen, Aluminium and Phosphorus
  on Silicene: stability, electronic and phonon properties

abstract:
  Ab initio calculations within the density-functional theory formalism are
performed to investigate the chemical functionalization of a graphene-like
monolayer of silicon - silicene - with B, N, Al or P atoms. The structural,
electronic, magnetic and vibrational properties are reported. The most
preferable adsorption sites are found to be valley, bridge, valley and hill
site for B, N, Al and P adatoms, respectively. All the relaxed systems with
adsorbed/substituted atoms exhibit metallic behaviour with strongly bonded B,
N, Al, and P atoms accompanied by an appreciable electron transfer from
silicene to the B, N and P adatom/substituent. The Al atoms exhibit opposite
charge transfer, with n-type doping of silicene and weaker bonding. The
adatoms/substituents induce characteristic branches in the phonon spectrum of
silicene, which can be probed by Raman measurements. Using molecular dynamics
we found that the systems under study are stable up to at least T = 500 K. Our
results demonstrate that silicene has a very reactive and functionalizable
surface.


title: Construction of minimal non-abelian left group codes

abstract:
  Algorithms to construct minimal left group codes are provided. These are
based on results describing a complete set of orthogonal primitive idempotents
in each Wedderburn component of a semisimple finite group algebra FG for a
large class of groups G.
  As an illustration of our methods, alternative constructions to some best
linear codes over F_2 and F_3 are given.


title: Phantom evolving wormholes with big rip singularities

abstract:
  We investigate a family of inhomogeneous and anisotropic gravitational fields
exhibiting a future singularity at a finite value of the proper time. The
studied spherically symmetric spacetimes are asymptotically
Friedmann-Robertson-Walker at spatial infinity and describe wormhole
configurations filled with two matter components: one inhomogeneous and
anisotropic fluid and another isotropic and homogeneously distributed fluid,
characterized by the supernegative equation of state \omega=p/\rho < -1. In
previously constructed wormholes, the notion of the phantom energy was used in
a more extended sense than in cosmology, where the phantom energy is considered
a homogeneously distributed fluid. Specifically, for some static wormhole
geometries the phantom matter was considered as an inhomogeneous and
anisotropic fluid, with radial and lateral pressures satisfying the relations
$p_{r}/\rho<-1$ and $p_{_l} \neq p_r$, respectively. In this paper we construct
phantom evolving wormhole models filled with an isotropic and homogeneous
component, described by a barotropic or viscous phantom energy, and ending in a
big rip singularity. In two of considered cases the equation of state parameter
is constrained to be less than -1, while in the third model the finite-time
future singularity may occur for $\omega<-1$, as well as for $-1 < \omega \leq
1$.


title: Effective System for Pregnant Women using Mobile GIS

abstract:
  World Health Organization showed at one year about 287 000 women died most of
them during and following pregnancy and childbirth in Africa and south Asia.
This paper suggests mHealth system for serving pregnant women, that proposed
system is first an effective mHealth system works base on mobile GIS to select
adjacent care centre or hospital maternity on Google map at online registration
for woman pregnant, that is done when the pregnant woman will send SMS via GPRS
network contains her ID and coordinates (Longitude and Latitude) the server
when receive it will search database support that system and using the same
infrastructure for help the pregnant women at her location (home, market, etc)
in emergency cases when the woman send SMS contains her coordinates for
succoring. Implement the proposed pregnant women system shows more effective
from view of cost than other systems because it works in economic (SMS) mode
and from view of serve the system can easy and rapidly manage when achieving
locally registration, succoring in emergency cases, change the review date of
pregnant woman, as well as different types of advising.
  Keywords Pregnant Women, mHealth System, General Packet Radio Service (GPRS);
Mobile GIS; Short Message Service (SMS), Global Position System (GPS).


title:
Kardar-Parisi-Zhang universality class in 2+1 dimensions: Universal
  geometry-dependent distributions and finite-time corrections

abstract:
  The dynamical regimes of models belonging to the Kardar-Parisi-Zhang (KPZ)
universality class are investigated in d=2+1 by extensive simulations
considering flat and curved geometries. Geometry-dependent universal
distributions, different from their Tracy-Widom counterpart in one-dimension,
were found. Distributions exhibit finite-time corrections hallmarked by a shift
in the mean decaying as t^-\beta, where \beta is the growth exponent. Our
results support a generalization of the ansatz h = v t + (\Gamma t)^\beta \chi
+ \eta + \zeta t^-\beta to higher dimensions, where v, \Gamma, \zeta and \eta
are non-universal quantities whereas \beta and \chi are universal and the last
one depends on the surface geometry. Generalized Gumbel distributions provide
very good fits of the distributions in at least four orders of magnitude around
the peak, which can be used for comparisons with experiments. Our numerical
results call for analytical approaches and experimental realizations of KPZ
class in two-dimensional systems.


title: Wavelets in function spaces on cellular domains

abstract:
  Nowadays the theory and application of wavelet decompositions plays an
important role not only for the study of function spaces (of Lebesgue, Hardy,
Sobolev, Besov, Triebel-Lizorkin type) but also for its applications in signal
and numerical analysis, partial differential equations and image processing. In
this context it it a hard problem to construct wavelet bases for suitable
function spaces on domains, e. g. the unit cube. A big step in this direction
are the contributions of Hans Triebel from 2006 to 2008 where he constructed
Riesz bases for classes of Besov- and Triebel-Lizorkin spaces on domains,
starting with Daubechies wavelets. But there was a problem coming from the
method: He had to exclude a big number of function spaces, in particular a
large class of classical Sobolev spaces. The main goal of this thesis is a
construction of Riesz bases of wavelet systems also for the exceptional cases
using a modification of the function spaces - the so-called reinforced function
spaces.


title: Checkpointing algorithms and fault prediction

abstract:
  This paper deals with the impact of fault prediction techniques on
checkpointing strategies. We extend the classical first-order analysis of Young
and Daly in the presence of a fault prediction system, characterized by its
recall and its precision. In this framework, we provide an optimal algorithm to
decide when to take predictions into account, and we derive the optimal value
of the checkpointing period. These results allow to analytically assess the key
parameters that impact the performance of fault predictors at very large scale.


title: Robust estimation of microbial diversity in theory and in practice

abstract:
  Quantifying diversity is of central importance for the study of structure,
function and evolution of microbial communities. The estimation of microbial
diversity has received renewed attention with the advent of large-scale
metagenomic studies. Here, we consider what the diversity observed in a sample
tells us about the diversity of the community being sampled. First, we argue
that one cannot reliably estimate the absolute and relative number of microbial
species present in a community without making unsupported assumptions about
species abundance distributions. The reason for this is that sample data do not
contain information about the number of rare species in the tail of species
abundance distributions. We illustrate the difficulty in comparing species
richness estimates by applying Chao's estimator of species richness to a set of
in silico communities: they are ranked incorrectly in the presence of large
numbers of rare species. Next, we extend our analysis to a general family of
diversity metrics ("Hill diversities"), and construct lower and upper estimates
of diversity values consistent with the sample data. The theory generalizes
Chao's estimator, which we retrieve as the lower estimate of species richness.
We show that Shannon and Simpson diversity can be robustly estimated for the in
silico communities. We analyze nine metagenomic data sets from a wide range of
environments, and show that our findings are relevant for empirically-sampled
communities. Hence, we recommend the use of Shannon and Simpson diversity
rather than species richness in efforts to quantify and compare microbial
diversity.


title: Study of the distribution of High Mass X-ray Binaries in the Galaxy

abstract:
  Observations of the high energy sky, mainly with the INTEGRAL satellite, have
raised new questions about the formation and evolution of High Mass X-ray
Binaries (HMXBs). The number of detected HMXBs of different types is now high
enough to allow us to carry out a statistical analysis of their distribution in
the Milky Way. For the first time, we derive the distance and absorption of a
sample of HMXBs using a Spectral Energy Distribution fitting procedure, and we
examine the correlation with the distribution of Star Forming Complexes (SFCs)
in the Galaxy. We show that HMXBs are clustered with SFCs with a typical
cluster size of 0.3 +/- 0.05 kpc and a characteristic distance between clusters
of 1.7 +/- 0.3 kpc. Furthermore, we present an investigation of the expected
offset between the position of spiral arms and HMXBs, allowing us to constrain
age and migration distance due to supernova kick for some sources. These new
methods will allow us to assess the influence of the environment on these high
energy objects with unprecedented reliability.


title: Ice condensation as a planet formation mechanism

abstract:
  We show that condensation is an efficient particle growth mechanism, leading
to growth beyond decimeter-sized pebbles close to an ice line in protoplanetary
discs. As coagulation of dust particles is frustrated by bouncing and
fragmentation, condensation could be a complementary, or even dominant, growth
mode in the early stages of planet formation. Ice particles diffuse across the
ice line and sublimate, and vapour diffusing back across the ice line
recondenses onto already existing particles, causing them to grow. We develop a
numerical model of the dynamical behaviour of ice particles close to the water
ice line, approximately 3 AU from the host star. Particles move with the
turbulent gas, modelled as a random walk. They also sediment towards the
midplane and drift radially towards the central star. Condensation and
sublimation are calculated using a Monte Carlo approach. Our results indicate
that, with a turbulent alpha-value of 0.01, growth from millimeter to at least
decimeter-sized pebbles is possible on a time scale of 1000 years. We find that
particle growth is dominated by ice and vapour transport across the radial ice
line, with growth due to transport across the atmospheric ice line being
negligible. Ice particles mix outwards by turbulent diffusion, leading to net
growth across the entire cold region. The resulting particles are large enough
to be sensitive to concentration by streaming instabilities, and in pressure
bumps and vortices, which can cause further growth into planetesimals. In our
model, particles are considered to be homogeneous ice particles. Taking into
account the more realistic composition of ice condensed onto rocky ice nuclei
might affect the growth time scales, by release of refractory ice nuclei after
sublimation. We also ignore sticking and fragmentation in particle collisions.
These effects will be the subject of future investigations.


title: On polarised class groups of orders in quartic CM-fields

abstract:
  We give an explicit necessary condition for pairs of orders in a quartic
CM-field to have the same polarised class group. This generalises a simpler
result for imaginary quadratic fields. We give an application of our results to
computing endomorphism rings of abelian surfaces over finite fields, and we use
our results to extend a completeness result of Murabayashi and Umegaki to a
list of abelian surfaces over the rationals with complex multiplication by
arbitrary orders.


title:
How to predict community responses to perturbations in the face of
  imperfect knowledge and network complexity

abstract:
  It is a challenge to predict the response of a large, complex system to a
perturbation. Recent attempts to predict the behaviour of food webs have
revealed that the effort needed to understand a system grows quickly with its
complexity, because increasingly precise information on the elements of the
system is required. Here, we show that not all elements of the system need to
be measured equally well. This suggests that a more efficient allocation of
effort to understand a complex systems is possible. We develop an iterative
technique for determining an efficient measurement strategy. Finally, in our
assessment of model food webs, we find that it is most important to precisely
measure the mortality and predation rates of long-lived, generalist, top
predators. Prioritizing the study of such species will make it easier to
understand the response of complex food webs to perturbations.


title: On the convexity of Relativistic Hydrodynamics

abstract:
  The relativistic hydrodynamic system of equations for a perfect fluid obeying
a causal equation of state is hyperbolic (Anile 1989 {\it Relativistic Fluids
and Magneto-Fluids} (Cambridge: Cambridge University Press)). In this report,
we derive the conditions for this system to be convex in terms of the
fundamental derivative of the equation of state (Menikoff and Plohr 1989 {\it
Rev. Mod. Phys.} {\bf 61} 75). The classical limit is recovered.


title: Diagonals in 2D-tilings and coincidence densities of substitutions

abstract:
  We study the diagonals of two-dimensional tilings generated by direct product
substitutions. The properties of these diagonals are primarily determined by
the eigenvalues of the substitution matrix, but also the order of the letters
in the substitution plays a role. We show that the diagonals may fail to be
uniformly recurrent, and that the frequencies of letters on the diagonal may
not exist. We also highlight the connection with the density of coincidences
and overlap distributions.


title: Exact Kahler Potential for Calabi-Yau Fourfolds

abstract:
  We study quantum Kahler moduli space of Calabi-Yau fourfolds. Our analysis is
based on the recent work by Jockers et al. which gives a novel method to
compute the Kahler potential on the quantum Kahler moduli space of Calabi-Yau
manifold. In contrast to Calabi-Yau threefold, the quantum nature of higher
dimensional Calabi-Yau manifold is yet to be fully elucidated. In this paper we
focus on the Calabi-Yau fourfold. In particular, we conjecture the explicit
form of the quantum-corrected Kahler potential. We also compute the genus zero
Gromov-Witten invariants and test our conjecture by comparing the results with
predictions from mirror symmetry. Local toric Calabi-Yau varieties are also
discussed.


title:
PARSEC: A Parametrized Simulation Engine for Ultra-High Energy Cosmic
  Ray Protons

abstract:
  We present a new simulation engine for fast generation of ultra-high energy
cosmic ray data based on parametrizations of common assumptions of UHECR origin
and propagation. Implemented are deflections in unstructured turbulent
extragalactic fields, energy losses for protons due to photo-pion production
and electron-pair production, as well as effects from the expansion of the
universe. Additionally, a simple model to estimate propagation effects from
iron nuclei is included. Deflections in galactic magnetic fields are included
using a matrix approach with precalculated lenses generated from backtracked
cosmic rays. The PARSEC program is based on object oriented programming
paradigms enabling users to extend the implemented models and is steerable with
a graphical user interface.


title:
Dilated Matrix Inequalities for Control Design in Systems with Actuator
  Constraint

abstract:
  In this paper, we present a new variation of dilated matrix inequalities
(MIs) for Bounded Real MI, invariant set MI and constraint MI, for both state
and output feedback synthesis problems. In these dilated MIs, system matrices
are separated from Lyapunov matrices to allow the use of different Lyapunov
matrices in multi-objective and robust problems. To demonstrate the benefit of
these new dilated MIs over conventional ones, they are used in solving
controller synthesis problem for systems with bounded actuator in disturbance
attenuation. It is shown that for the resulting multi-objective saturation
problem, the new form of dilated MIs achieves an upper bound for $L_2$ gain
that is less than or equal to the upper bound estimate achieved by conventional
method.


title: Faster exponential-time algorithms in graphs of bounded average degree

abstract:
  We first show that the Traveling Salesman Problem in an n-vertex graph with
average degree bounded by d can be solved in O*(2^{(1-\eps_d)n}) time and
exponential space for a constant \eps_d depending only on d, where the
O*-notation suppresses factors polynomial in the input size. Thus, we
generalize the recent results of Bjorklund et al. [TALG 2012] on graphs of
bounded degree.
  Then, we move to the problem of counting perfect matchings in a graph. We
first present a simple algorithm for counting perfect matchings in an n-vertex
graph in O*(2^{n/2}) time and polynomial space; our algorithm matches the
complexity bounds of the algorithm of Bjorklund [SODA 2012], but relies on
inclusion-exclusion principle instead of algebraic transformations. Building
upon this result, we show that the number of perfect matchings in an n-vertex
graph with average degree bounded by d can be computed in
O*(2^{(1-\eps_{2d})n/2}) time and exponential space, where \eps_{2d} is the
constant obtained by us for the Traveling Salesman Problem in graphs of average
degree at most 2d.
  Moreover we obtain a simple algorithm that counts the number of perfect
matchings in an n-vertex bipartite graph of average degree at most d in
O*(2^{(1-1/(3.55d))n/2}) time, improving and simplifying the recent result of
Izumi and Wadayama [FOCS 2012].


title: Acoustic multipole sources from the Boltzmann equation

abstract:
  By adding a particle source term in the Boltzmann equation of kinetic theory,
it is possible to represent particles appearing and disappearing throughout the
fluid with a specified distribution of particle velocities. By deriving the
wave equation from this modified Boltzmann equation via the conservation
equations of fluid mechanics, multipole source terms in the wave equation are
found. These multipole source terms are given by the particle source term in
the Boltzmann equation. To the Euler level in the momentum equation, a monopole
and a dipole source term appear in the wave equation. To the Navier-Stokes
level, a quadrupole term with negligible magnitude also appears.


title:
Nonlinear effects and the behavior of total hadronic and photonic cross
  sections

abstract:
  In this work we use an eikonalized minijet model where the effects of the
first nonlinear corrections to the DGLAP equations are taken into account. The
contributions coming from gluon recombination effects are included in the
DGLAP+GLRMQ approach for the free proton in the context of saturation models.
The parameters of the model are fixed to fit total $pp$ and $\bar p p$ cross
sections, including the very recent data from LHC, HiRes and P. Auger
Collaborations. Glauber and multiple scattering approximations are then used to
describe the inclusive inelastic proton-Air cross section. Photoproduction
cross sections, without change of parameters fixed before, are also obtained
from the model using Vector Meson Dominance and the Additive Quark Model. We
show and discuss our main results as well as the implications of saturation
effects in the behavior of total hadronic and photonic cross sections at very
high energies.


title: Ergodic currents dual to a real tree

abstract:
  Let $T$ be an $\R$-tree in the boundary of Outer space with dense orbits.
When the free group $\FN$ acts freely on $T$, we prove that the number of
projective classes of ergodic currents dual to $T$ is bounded above by $3N-5$.
  We combine Rips induction and splitting induction to define unfolding
induction for such an $\R$-tree $T$. Given a current $\mu$ dual to $T$, the
unfolding induction produces a sequence of approximations converging towards
$\mu$.
  We also give a unique ergodicity criterion.


title: First Steps into Physics in the Winery

abstract:
  Physics is introduced as a basic matter in the curricula of professional
schools (i.e. schools for agriculture, electronic or chemistry experts).
Students meet physics in the early years of their training and then continue in
vocational subjects where many physics' topics can be useful. Rarely, however,
the connection between physics and professional matters is quite explicit.
Students often feel physics as boring and useless, i.e. very far from their
interests. In these schools it is almost always required the physics lab, but
it does not always exist. The physics teachers of a local Agricultural
Technical Institute asked us to realize a learning path in laboratory for their
students, since in their school the physics lab was missing. This institute is
the only public school in the Chianti area specializing in Viticulture and
Enology, and attending a further year post diploma, allows the achievement of
the qualification of Enologist. We report a learning path realized starting
from thermal equilibrium to a full understanding of the measures made with the
Malligand's ebulliometer, used for determining the alcoholic strength (alcohol
concentration by volume) of an alcoholic beverage and water/alcohol solutions
in general. The aim was to make interesting measures of physical quantities,
calorimetry and state transitions connecting them to the functioning of an
instrument that students use in their professional career. The feedback of
students and the interests of their teachers convinced us to go further in this
way. We intend in the next future to involve teachers of physics and vocational
subjects in the design of a physics curriculum spread over two years in which
the main physics topics will be introduced to explain the functioning of tools
and equipment used, normally, in the winery.


title:
Deviation inequalities for bifurcating Markov chains on Galton-Watson
  tree

abstract:
  We provide deviation inequalities for properly normalized sums of bifurcating
Markov chains on Galton-Watson tree. These processes are extension of
bifurcating Markov chains (which was introduced by Guyon to detect cellular
aging from cell lineage) in case the index set is a binary Galton-Watson
process. As application, we derive deviation inequalities for the least-squares
estimator of autoregressive parameters of bifurcating autoregressive processes
with missing data. These processes allow, in case of cell division, to take
into account the cell's death. The results are obtained under an uniform
geometric ergodicity assumption of an embedded Markov chain.


title:
Spin dynamics of a Mn atom in a semiconductor quantum dot under resonant
  optical excitation

abstract:
  We analyze the spin dynamics of an individual magnetic atom (Mn) inserted in
a II-VI semiconductor quantum dot under resonant optical excitation. In
addition to standard optical pumping expected for a resonant excitation, we
show that for particular conditions of laser detuning and excitation intensity,
the spin population can be trapped in the state which is resonantly excited.
This effect is modeled considering the coherent spin dynamics of the coupled
electronic and nuclear spin of the Mn atom optically dressed by a resonant
laser field. This spin population trapping mechanism is controlled by the
combined effect of the coupling with the laser field and the coherent
interaction between the different Mn spin states induced by an anisotropy of
the strain in the plane of the quantum dot.


title: The Quicksort Process

abstract:
  Quicksort on the fly returns the input of $n$ reals in increasing natural
order during the sorting process. Correctly normalized the running time up to
returning the l-th smallest out of n seen as a process in l converges weakly to
a limiting process with path in the space of cadlag functions.


title: Pricing Step Options under the CEV and other Solvable Diffusion Models

abstract:
  We consider a special family of occupation-time derivatives, namely
proportional step options introduced by Linetsky in [Math. Finance, 9, 55--96
(1999)]. We develop new closed-form spectral expansions for pricing such
options under a class of nonlinear volatility diffusion processes which
includes the constant-elasticity-of-variance (CEV) model as an example. In
particular, we derive a general analytically exact expression for the resolvent
kernel (i.e. Green's function) of such processes with killing at an exponential
stopping time (independent of the process) of occupation above or below a fixed
level. Moreover, we succeed in Laplace inverting the resolvent kernel and
thereby derive newly closed-form spectral expansion formulae for the transition
probability density of such processes with killing. The spectral expansion
formulae are rapidly convergent and easy-to-implement as they are based simply
on knowledge of a pair of fundamental solutions for an underlying solvable
diffusion process. We apply the spectral expansion formulae to the pricing of
proportional step options for four specific families of solvable nonlinear
diffusion asset price models that include the CEV diffusion model and three
other multi-parameter state-dependent local volatility confluent hypergeometric
diffusion processes.


title:
Traveling magnetopause distortion related to a large-scale magnetosheath
  plasma jet: THEMIS and ground-based observations

abstract:
  Here, we present a case study of THEMIS and ground-based observations on the
dayside magnetopause, and geomagnetic field perturbations related to the
interaction of an interplanetary directional discontinuity (DD), as observed by
ACE, within the magnetosphere on 16 June 2007. The interaction resulted in a
large-scale local magnetopause distortion of an
'expansion-compression-expansion' (ECE) sequence that lasted for 15 min. The
compression was caused by a very dense, cold, and fast high-beta magnetosheath
plasma flow, a so-called plasma jet, whose kinetic energy was approximately
three times higher than the energy of the incident solar wind. The plasma jet
resulted in the effective penetration of the magnetosheath plasma inside the
magnetosphere. A strong distortion of the Chapman-Ferraro current in the ECE
sequence generated a tripolar magnetic pulse 'decrease-peak-decrease' (DPD)
that was observed at low and middle latitudes by the INTERMAGNET network of
ground-based magnetometers. The characteristics of the ECE sequence and the
spatial-temporal dynamics of the DPD pulse were found to be very different from
any reported patterns of DD interactions within the magnetosphere. The observed
features only partially resembled structures such as FTE, hot flow anomalies,
and transient density events. Thus, it is difficult to explain them in the
context of existing models.


title: Poisson ensembles of loops of one-dimensional diffusions

abstract:
  We study the analogue of Poisson ensembles of Markov loops ('loop soups') in
the setting of one-dimensional diffusions. We give a detailed description of
the corresponding intensity measure. The properties of this measure on loops
lead us to an extension of Vervaat's bridge-to-excursion transformation that
relates the bridges conditioned by their minimum and the excursions of all the
diffusion we consider and not just the Brownian motion. Further we describe the
Poisson point process of loops, their occupation fields and explain how to
sample these Poisson ensembles of loops using two-dimensional Markov processes.
Finally we introduce a couple of interwoven determinantal point processes on
the line which is a dual through Wilson's algorithm of Poisson ensembles of
loops and study the properties of these determinantal point processes.


title:
Modelling of a captive unmanned aerial system teledetecting oil
  pollution on sea surface

abstract:
  Recent major oil-spills were tracked using observations with sufficient
altitudes over the sea surface, to detect oil slick locations. For oil-spill
responders, we propose a captive Unmanned Aerial System, UAS acting like a
periscope over a ship or supply vessel. The system is composed of an umbilical
deployed from ship deck, and there are few studies that have examined
elasticity within cable dynamic during take-off or landing (TOL) and normal
flight phases. Therefore, the safest approach for the control-commands of the
system is through umbilical dynamic modelling. We give a time-dependant
finite-element formulation, using improved elastic non-linear cable elements.
Two kinds of boundary condition, natural or essential, are discussed for
roll-in or roll-out of the umbilical. A numerical convergence and a validation
with an exact solution are provided, using two examples for the flight
parameters. Finally, sensitivity of the model potentially extends its capacity
for the system equilibrium prediction, under wind primary influence.


title:
Rotational constants of multi-phonon bands in an effective theory for
  deformed nuclei

abstract:
  We consider deformed nuclei within an effective theory that exploits the
small ratio between rotational and vibrational excitations. For even-even
nuclei, the effective theory predicts small changes in the rotational constants
of bands built on multi-phonon excitations that are linear in the number of
excited phonons. In 166Er and 168Er, this explains the main variations of the
rotational constants of the two-phonon gamma vibrational bands. In 232Th, the
effective theory correctly explains the trend that the rotational constants
decrease with increasing spin of the band head. We also study the effective
theory for deformed odd nuclei. Here, time-odd terms enter the Lagrangian and
generate effective magnetic forces that yield the high level densities observed
in such nuclei.


title:
Some aspects of the phase diagram of nuclear matter relevant to compact
  stars

abstract:
  Dense matter as it can be found in core-collapse supernovae and neutron stars
is expected to exhibit different phase transitions which impact the matter
composition and the equation of state, with important consequences on the
dynamics of core-collapse supernova explosion and on the structure of neutron
stars. In this paper we will address the specific phenomenology of two of such
transitions, namely the crust-core solid-liquid transition at sub-saturation
density, and the possible strange transition at super-saturation density in the
presence of hyperonic degrees of freedom. Concerning the neutron star
crust-core phase transition at zero and finite temperature, it will be shown
that, as a consequence of the presence of long-range Coulomb interactions, a
clusterized phase is expected which is not accessible in the grand-canonical
ensemble. A specific quasi-particle model will be introduced and some
quantitative results relevant for the supernova dynamics will be shown. The
opening of hyperonic degrees of freedom at higher densities corresponding to
the neutron stars core also modifies the equation of state. The general
characteristics and order of phase transitions in this regime will be analyzed
in the framework of a self-consistent mean-field approach.


title:
Capacity of the State-Dependent Half-Duplex Relay Channel Without
  Source-Destination Link

abstract:
  We derive the capacity of the state-dependent half-duplex relay channel
without source-destination link. The output of the state-dependent half-duplex
relay channel depends on the randomly varying channel states of the
source-relay and relay-destination links, which are known causally at all three
nodes. For this channel, we prove a converse and show the achievability of the
capacity based on a buffer-aided relaying protocol with adaptive link
selection. This protocol chooses in each times slot one codeword to be
transmitted over either the source-relay or the relay-destination channel
depending on the channel states. Our proof of the converse reveals that
state-dependent half-duplex relay networks offer one additional degree of
freedom which has been previously overlooked. Namely, the freedom of the
half-duplex relay to choose when to receive and when to transmit.


title:
Supersymmetric gauge theories, quantization of moduli spaces of flat
  connections, and conformal field theory

abstract:
  We will propose a derivation of the correspondence between certain gauge
theories with N=2 supersymmetry and conformal field theory discovered by Alday,
Gaiotto and Tachikawa in the spirit of Seiberg-Witten theory. Based on certain
results from the literature we argue that the quantum theory of the moduli
spaces of flat SL(2,R)-connections represents a non-perturbative "skeleton" of
the gauge theory, protected by supersymmetry. It follows that instanton
partition functions can be characterized as solutions to a Riemann-Hilbert type
problem. In order to solve it, we describe the quantization of the moduli
spaces of flat connections explicitly in terms of two natural sets of Darboux
coordinates. The kernel describing the relation between the two pictures
represents the solution to the Riemann Hilbert problem, and is naturally
identified with the Liouville conformal blocks.


title:
Nouvelles problematiques posees par le cyclage thermo-mecanique en
  cavites salines

abstract:
  Storage of natural gas in salt caverns had been developed mainly for seasonal
storage, resulting in a small number of yearly pressure cycles and moderate
gas-production rates. The needs of energy traders are changing towards more
aggressive operational modes. The "high-frequency cycling" operation of salt
caverns raises questions concerning the effects of frequently repeated and
intense mechanical and thermal loading. These questions concern the
constitutive creep laws for salt, laboratory test procedures, criteria to be
used at the design stage to provide operability, and the long-term integrity of
the underground salt caverns.


title: Some a priori estimates for a critical Schrodinger-Newton equation

abstract:
  Under natural energy and decay assumptions, we derive a priori estimates for
solutions of a Schrodinger-Newton type of equation with critical exponent. On
one hand, such an equation generalizes the traditional Schrodinger-Newton and
Choquard equations, while, on the other hand, it is naturally related to
problems involving scalar curvature and conformal deformation of metrics.


title: Two-dimensional ion trap lattice on a microchip

abstract:
  Microfabricated ion traps are a major advancement towards scalable quantum
computing with trapped ions. The development of more versatile ion-trap
designs, in which tailored arrays of ions are positioned in two dimensions
above a microfabricated surface, would lead to applications in fields as varied
as quantum simulation, metrology and atom-ion interactions. Current surface ion
traps often have low trap depths and high heating rates, due to the size of the
voltages that can be applied to them, limiting the fidelity of quantum gates.
Here we report on a fabrication process that allows for the application of very
high voltages to microfabricated devices in general and use this advance to
fabricate a 2D ion trap lattice on a microchip. Our microfabricated
architecture allows for reliable trapping of 2D ion lattices, long ion
lifetimes, rudimentary shuttling between lattice sites and the ability to
deterministically introduce defects into the ion lattice.


title:
Super-Planckian Near-Field Thermal Emission with Phonon-Polaritonic
  Hyperbolic Metamaterials

abstract:
  We study super-Planckian near-field heat exchanges for multilayer hyperbolic
metamaterials using exact S-matrix calculations. We investigate heat exchanges
between two multilayer hyperbolic metamaterial structures. We show that the
super- Planckian emission of such metamaterials can either come from the
presence of surface phonon-polaritons modes or from a continuum of hyperbolic
modes depending on the choice of composite materials as well as the structural
configuration.


title: Variations of the Morse-Hedlund Theorem for $k$-Abelian Equivalence

abstract:
  In this paper we investigate local to global phenomena for a new family of
complexity functions of infinite words indexed by $k \in \Ni \cup \{+\infty\}$
where $\Ni$ denotes the set of positive integers. Two finite words $u$ and $v$
in $A^*$ are said to be $k$-Abelian equivalent if for all $x \in A^*$ of length
less than or equal to $k$, the number of occurrences of $x$ in $u$ is equal to
the number of occurrences of $x$ in $v$. This defines a family of equivalence
relations $\sim_k$ on $A^*$, bridging the gap between the usual notion of
Abelian equivalence (when $k = 1$) and equality (when $k = +\infty$). Given an
infinite word $w \in A^\omega$, we consider the associated complexity function
$\mathcal P^{(k)}_w : \Ni \rightarrow \Ni$ which counts the number of
$k$-Abelian equivalence classes of factors of $w$ of length $n$. As a whole,
these complexity functions have a number of common features: Each gives a
characterization of periodicity in the context of bi-infinite words, and each
can be used to characterize Sturmian words in the framework of aperiodic
one-sided infinite words. Nevertheless, they also exhibit a number of striking
differences, the study of which is one of the main topics of our paper.


title:
Algorithms for Enhanced Inter Cell Interference Coordination (eICIC) in
  LTE HetNets

abstract:
  The success of LTE Heterogeneous Networks (HetNets) with macro cells and pico
cells critically depends on efficient spectrum sharing between high-power
macros and low-power picos. Two important challenges in this context are, {(i)}
determining the amount of radio resources that macro cells should {\em offer}
to pico cells, and {(ii)} determining the association rules that decide which
UEs should associate with picos. In this paper, we develop a novel algorithm to
solve these two coupled problems in a joint manner. Our algorithm has provable
guarantee, and furthermore, it accounts for network topology, traffic load, and
macro-pico interference map. Our solution is standard compliant and can be
implemented using the notion of Almost Blank Subframes (ABS) and Cell Selection
Bias (CSB) proposed by LTE standards. We also show extensive evaluations using
RF plan from a real network and discuss SON based eICIC implementation.


title: Analysis of Descent-Based Image Registration

abstract:
  We present a performance analysis for image registration with gradient
descent methods. We consider a typical multiscale registration setting where
the global 2-D translation between a pair of images is estimated by smoothing
the images and minimizing the distance between them with gradient descent. Our
study particularly concentrates on the effect of noise and low-pass filtering
on the alignment accuracy. We adopt an analytic representation for images and
analyze the well-behavedness of the image distance function by estimating the
neighborhood of translations for which it is free of undesired local minima.
This corresponds to the neighborhood of translation vectors that are correctly
computable with a simple gradient descent minimization. We show that the area
of this neighborhood increases at least quadratically with the smoothing filter
size, which justifies the use of a smoothing step in image registration with
local optimizers such as gradient descent. We then examine the effect of noise
on the alignment accuracy and derive an upper bound for the alignment error in
terms of the noise properties and filter size. Our main finding is that the
error increases at a rate that is at least linear with respect to the filter
size. Therefore, smoothing improves the well-behavedness of the distance
function; however, this comes at the cost of amplifying the alignment error in
noisy settings. Our results provide a mathematical insight about why
hierarchical techniques are effective in image registration, suggesting that
the multiscale coarse-to-fine alignment strategy of these techniques is very
suitable from the perspective of the trade-off between the well-behavedness of
the objective function and the registration accuracy. To the best of our
knowledge, this is the first such study for descent-based image registration.


title:
Secure entanglement distillation for double-server blind quantum
  computation

abstract:
  Blind quantum computation is a new secure quantum computing protocol where a
client, who does not have enough quantum technologies at her disposal, can
delegate her quantum computation to a server, who has a fully-fledged quantum
computer, in such a way that the server cannot learn anything about client's
input, output, and program. If the client interacts with only a single server,
the client has to have some minimum quantum power, such as the ability of
emitting randomly rotated single-qubit states or the ability of measuring
states. If the client interacts with two servers who share Bell pairs but
cannot communicate with each other, the client can be completely classical. For
such a double-server scheme, two servers have to share clean Bell pairs, and
therefore the entanglement distillation is necessary in a realistic noisy
environment. In this paper, we show that it is possible to perform entanglement
distillation in the double-server scheme without degrading the security of the
blind quantum computing.


title: Proposed test of relative phase as hidden variable in quantum mechanics

abstract:
  We consider the possibility that the relative phase in quantum mechanics
plays a role in determining measurement outcome and could therefore serve as a
"hidden" variable. The Born rule for measurement equates the probability for a
given outcome with the absolute square of the coefficient of the basis state,
which by design removes the relative phase from the formulation. The value of
this phase at the moment of measurement naturally averages out in an ensemble,
which would prevent any dependence from being observed, and we show that
conventional frequency-spectroscopy measurements on discrete quantum systems
cannot be imposed at a specific phase due to a straightforward uncertainty
relation. We lay out general conditions for imposing measurements at a specific
value of the relative phase so that the possibility of its role as a hidden
variable can be tested, and we discuss implementation for the specific case of
an atomic two-state system with laser-induced fluorescence for measurement.


title: Suppression and emergence of granular segregation under cyclic shear

abstract:
  While convective flows are implicated in many granular segregation processes,
the associated particle-scale rearrangements are not well understood. A
three-dimensional bidisperse mixture segregates under steady shear, but the
cyclically driven system either remains mixed or segregates slowly. Individual
grain motion shows no signs of particle-scale segregation dynamics that precede
bulk segregation. Instead, we find that the transition from non-segregating to
segregating flow is accompanied by significantly less reversible particle
trajectories, and the emergence of a convective flow field.


title:
Magnetopause expansions for quasi-radial interplanetary magnetic field:
  THEMIS and Geotail observations

abstract:
  We report THEMIS and Geotail observations of prolonged magnetopause (MP)
expansions during long-lasting intervals of quasi-radial interplanetary
magnetic field (IMF) and nearly constant solar wind dynamic pressure. The
expansions were global: the magnetopause was located more than 3 RE and ~7 RE
outside its nominal dayside and magnetotail locations, respectively. The
expanded states persisted several hours, just as long as the quasi-radial IMF
conditions, indicating steady-state situations. For an observed solar wind
pressure of ~1.1-1.3 nPa, the new equilibrium subsolar MP position lay at ~14.5
RE, far beyond its expected location. The equilibrium position was affected by
geomagnetic activity. The magnetopause expansions result from significant
decreases in the total pressure of the high-beta magnetosheath, which we term
the low-pressure magnetosheath (LPM) mode. A prominent LPM mode was observed
for upstream conditions characterized by IMF cone angles less than 20 ~ 25
grad, high Mach numbers and proton plasma beta<1.3. The minimum value for the
total pressure observed by THEMIS in the magnetosheath adjacent to the
magnetopause was 0.16 nPa and the fraction of the solar wind pressure applied
to the magnetopause was therefore 0.2, extremely small. The equilibrium
location of the magnetopause was modulated by a nearly continuous wavy motion
over a wide range of time and space scales.


title:
Reproducible probe-level analysis of the Affymetrix Exon 1.0 ST array
  with R/Bioconductor

abstract:
  The presence of different transcripts of a gene across samples can be
analysed by whole-transcriptome microarrays. Reproducing results from published
microarray data represents a challenge due to the vast amounts of data and the
large variety of pre-processing and filtering steps employed before the actual
analysis is carried out. To guarantee a firm basis for methodological
development where results with new methods are compared with previous results
it is crucial to ensure that all analyses are completely reproducible for other
researchers. We here give a detailed workflow on how to perform reproducible
analysis of the GeneChip Human Exon 1.0 ST Array at probe and probeset level
solely in R/Bioconductor, choosing packages based on their simplicity of use.
To exemplify the use of the proposed workflow we analyse differential splicing
and differential gene expression in a publicly available dataset using various
statistical methods. We believe this study will provide other researchers with
an easy way of accessing gene expression data at different annotation levels
and with the sufficient details needed for developing their own tools for
reproducible analysis of the GeneChip Human Exon 1.0 ST Array.


title: Rotating fermions

abstract:
  We investigate the rigidly rotating quantum thermal distribution of fermions
in flat space-time. We find that thermal states diverge on the speed of light
surface. We remove the divergences by enclosing the system inside a cylindrical
boundary and investigate thermal expectation values and the Casimir effect for
two sets of boundary conditions.


title: Legendrian rational unknots in lens spaces

abstract:
  We classify Legendrian rational unknots with tight complements in the lens
spaces L(p,1) up to coarse equivalence. As an example of the general case, this
classification is also worked out for L(5,2). The knots are described
explicitly in a contact surgery diagram of the corresponding lens space.


title: On the Communication Complexity of Approximate Nash Equilibria

abstract:
  We study the problem of computing approximate Nash equilibria of bimatrix
games, in a setting where players initially know their own payoffs but not the
payoffs of the other player. In order for a solution of reasonable quality to
be found, some amount of communication needs to take place between the players.
We are interested in algorithms where the communication is substantially less
than the contents of a payoff matrix, for example logarithmic in the size of
the matrix. When the communication is polylogarithmic in the number of
strategies n, we show how to obtain epsilon-approximate Nash equilibria for
epsilon approximately 0.438, and for well-supported approximate equilibria we
obtain epsilon approximately 0.732. For one-way communication we show that
epsilon=1/2 is achievable, but no constant improvement over 1/2 is possible,
even with unlimited one-way communication. For well-supported equilibria, no
value of epsilon less than 1 is achievable with one-way communication. When the
players do not communicate at all, epsilon-Nash equilibria can be obtained for
epsilon=3/4, and we also give a lower bound of slightly more than 1/2 on the
lowest constant epsilon achievable.


title: Higgs Precision (Higgcision) Era begins

abstract:
  After the discovery of the Higgs boson at the LHC, it is natural to start the
research program on the precision study of the Higgs-boson couplings to various
standard model (SM) particles. We provide a generic framework for the
deviations of the couplings from their SM values by introducing a number of
parameters. We show that a large number of models beyond the SM can be covered,
including two-Higgs-doublet models, supersymmetric models, little-Higgs models,
extended Higgs sectors with singlets, and fourth generation models. We perform
global fits to the most updated data from CMS, ATLAS, and Tevatron under
various initial conditions of the parameter set. In particular, we have made
explicit comparisons between the fitting results BEFORE and AFTER the Moriond
2013 meetings. Highlights of the results include: (i) the nonstandard decay
branching ratio of the Higgs boson is less than 22%; (ii) the most efficient
way to achieve the best fit for the data before the Moriond update is to
introduce additional particle contributions to the triangular-loop functions of
H\gamma\gamma and Hgg vertices; (iii) the 1\sigma allowed range of the relative
coupling of HVV is 1.01 +0.13 -0.14, which means that the electroweak-symmetry
breaking contribution from the observed Higgs boson leaves only a small room
for other Higgs bosons; (iv) the current data do not rule out pseudoscalar
couplings nor pseudoscalar contributions to the H\gamma\gamma and Hgg vertices;
and (v) the SM Higgs boson provides the best fit to all the current Higgs data.


title:
Structure of the inner jet of OJ 287 VLBA data at 15 GHz in a
  super-resolution mode

abstract:
  In this work we show the results obtained from the VLBA data at 15 GHz of OJ
287 in the super-resolution mode. The data showed a jet configuration in the
form of "fork" where superluminal components emerge via stationary components
at the northwest and the southeast close to the core to form parallel
trajectories along the southwest direction in the plane of the sky. This agrees
with a source structure of an extended, broad morphology of OJ 287.


title:
Thermal field theory at next-to-leading order in the hard thermal loop
  expansion

abstract:
  In this paper we study the hard-thermal-loop effective theory at
next-to-leading order. Standard power-counting predicts that a large number of
diagrams, including 2-loop diagrams, may need to be calculated. In all of the
calculations that have been done however, with the exception of the photon
self-energy, the full next-to-leading order contribution can be obtained by
calculating only soft 1-loop diagrams with effective lines and vertices. It is
of interest to know if the photon self-energy is the only exception to this
rule, or if there are others, and which ones. In this paper we perform a
refined power-counting analysis using real-time finite temperature field theory
which is particularly well suited to the task. We show that the standard
power-counting rules obtained from the imaginary time formalism usually
over-estimate the size of the 2-loop diagrams. We argue that the only
exceptions to the rule that the 1-loop soft diagrams give the next-to-leading
order contribution are $2n$-photon vertices.


title: Traffic jams, gliders, and bands in the quest for collective motion

abstract:
  We study a simple swarming model on a two-dimensional lattice where the
self-propelled particles exhibit a tendency to align ferromagnetically. Volume
exclusion effects are present: particles can only hop to a neighboring node if
the node is empty. Here we show that such effects lead to a surprisingly rich
variety of self-organized spatial patterns. As particles exhibit an
increasingly higher tendency to align to neighbors, they first self-segregate
into disordered particle aggregates. Aggregates turn into traffic jams. Traffic
jams evolve toward gliders, triangular high density regions that migrate in a
well-defined direction. Maximum order is achieved by the formation of elongated
high density regions - bands - that transverse the entire system. Numerical
evidence suggests that below the percolation density the phase transition
associated to orientational order is of first-order, while at full occupancy it
is of second-order. The model highlights the (pattern formation) importance of
a coupling between local density, orientation, and local speed.


title: Silent Transitions in Automata with Storage

abstract:
  We consider the computational power of silent transitions in one-way automata
with storage. Specifically, we ask which storage mechanisms admit a
transformation of a given automaton into one that accepts the same language and
reads at least one input symbol in each step.
  We study this question using the model of valence automata. Here, a finite
automaton is equipped with a storage mechanism that is given by a monoid.
  This work presents generalizations of known results on silent transitions.
For two classes of monoids, it provides characterizations of those monoids that
allow the removal of \lambda-transitions. Both classes are defined by graph
products of copies of the bicyclic monoid and the group of integers. The first
class contains pushdown storages as well as the blind counters while the second
class contains the blind and the partially blind counters.


title: Correlations in complex networks under attack

abstract:
  For any initial correlated network after any kind of attack where either
nodes or edges are removed, we obtain general expressions for the degree-degree
probability matrix and degree distribution. We show that the proposed
analytical approach predicts the correct topological changes after the attack
by comparing the evolution of the assortativity coefficient for different
attack strategies and intensities in theory and simulations. We find that it is
possible to turn an initial assortative network into a disassortative one, and
vice versa, by fine-tuning removal of either nodes or edges. For an initial
uncorrelated network, on the other hand, we discover that only a targeted
edge-removal attack can induce such correlations.


title:
An Enhanced Spectral Efficiency Chaos-Based Symbolic Dynamics
  Transceiver Design

abstract:
  Chaotic synchronization performs poorly in noisy environments, with the main
drawback being that the coherent receiver cannot be implemented in realistic
communication channels. In this paper, we focus our study on a promising
communication system based on chaotic symbolic dynamics. Such modulation shows
a high synchronization quality, without the need for a complex chaotic
synchronization mechanism. Our study mainly concerns an improvement of the
bandwidth efficiency of the chaotic modulator. A new chaotic map is proposed to
achieve this goal, and a receiver based on the maximum likelihood algorithm is
designed to estimate the transmitted symbols. The performance of the proposed
system is analyzed and discussed.