title:
Informed baseline subtraction of proteomic mass spectrometry data aided
  by a novel sliding window algorithm

abstract:
  Proteomic matrix-assisted laser desorption/ionisation (MALDI) linear
time-of-flight (TOF) mass spectrometry (MS) may be used to produce protein
profiles from biological samples with the aim of discovering biomarkers for
disease. However, the raw protein profiles suffer from several sources of bias
or systematic variation which need to be removed via pre-processing before
meaningful downstream analysis of the data can be undertaken. Baseline
subtraction, an early pre-processing step that removes the non-peptide signal
from the spectra, is complicated by the following: (i) each spectrum has, on
average, wider peaks for peptides with higher mass-to-charge ratios (m/z), and
(ii) the time-consuming and error-prone trial-and-error process for optimising
the baseline subtraction input arguments. With reference to the aforementioned
complications, we present an automated pipeline that includes (i) a novel
`continuous' line segment algorithm that efficiently operates over data with a
transformed m/z-axis to remove the relationship between peptide mass and peak
width, and (ii) an input-free algorithm to estimate peak widths on the
transformed m/z scale. The automated baseline subtraction method was deployed
on six publicly available proteomic MS datasets using six different m/z-axis
transformations. Optimality of the automated baseline subtraction pipeline was
assessed quantitatively using the mean absolute scaled error (MASE) when
compared to a gold-standard baseline subtracted signal. Near-optimal baseline
subtraction was achieved using the automated pipeline. The advantages of the
proposed pipeline include informed and data specific input arguments for
baseline subtraction methods, the avoidance of time-intensive and subjective
piecewise baseline subtraction, and the ability to automate baseline
subtraction completely. Moreover, individual steps can be adopted as
stand-alone routines.


title: Mesons in Nuclei and Partial Restoration of Chiral Symmetry

abstract:
  Recent topics on mesons in nuclei are discussed by especially emphasizing the
role of the partial restoration of chiral symmetry in the nuclear medium. The
spontaneously broken chiral symmetry in vacuum is considered to be incompletely
restored in finite nuclear density systems with moderate reduction of the
magnitude of the quark condensate. On the partial restoration of chiral
symmetry, the wave function renormalization is important to be taken into
account for the Nambu-Goldstone bosons. We also discuss the possible change of
the meson properties in the nuclear medium and meson-nucleus systems for the
$\bar K$, $\eta$, $K^{+}$ and $\eta^{\prime}$ mesons.


title:
Optical and near infrared observations of SN 2014ck: an outlier among
  the Type Iax supernovae

abstract:
  We present a comprehensive set of optical and near-infrared photometric and
spectroscopic observations for SN 2014ck, extending from pre-maximum to six
months later. These data indicate that SN 2014ck is photometrically nearly
identical to SN 2002cx, which is the prototype of the class of peculiar
transients named SNe Iax. Similar to SN 2002cx, SN 2014ck reached a peak
brightness $M_B=-17.37 \pm 0.15$ mag, with a post-maximum decline-rate $\Delta
m_{15} (B) = 1.76 \pm 0.15$ mag. However, the spectroscopic sequence shows
similarities with SN 2008ha, which was three magnitudes fainter and faster
declining. In particular, SN 2014ck exhibits extremely low ejecta velocities,
$\sim 3000$ km s$^{-1}$ at maximum, which are close to the value measured for
SN 2008ha and half the value inferred for SN 2002cx. The bolometric light curve
of SN 2014ck is consistent with the production of $0.10^{+0.04}_{-0.03}
M_{\odot}$ of $^{56}$Ni. The spectral identification of several iron-peak
features, in particular Co II lines in the NIR, provides a clear link to SNe
Ia. Also, the detection of narrow Si, S and C features in the pre-maximum
spectra suggests a thermonuclear explosion mechanism. The late-phase spectra
show a complex overlap of both permitted and forbidden Fe, Ca and Co lines. The
appearance of strong [Ca~II] $\lambda\lambda$7292, 7324 again mirrors the
late-time spectra of SN 2008ha and SN 2002cx. The photometric resemblance to SN
2002cx and the spectral similarities to SN 2008ha highlight the peculiarity of
SN 2014ck, and the complexity and heterogeneity of the SNe Iax class.


title: Possible interrelations among chemical freezeout conditions

abstract:
  At thermal equilibrium, different chemical freezeout conditions have been
proposed so far. They have an ultimate aim of proposing a universal description
for the chemical freezeout parameters ($T_{ch}$ and $\mu_b$), which are to be
extracted from the statistical fitting of different particle ratios measured at
various collision energies with calculations from thermal models. A systematic
comparison between these conditions is presented. The physical meaning of each
of them and their sensitivity to the hadron mass cuts are discussed. Based on
availability, some of them are compared with recent lattice calculations. We
found that most of these conditions are thermodynamically equivalent,
especially at small baryon chemical potential. We propose that further crucial
consistency tests should be performed at low energies. The fireball
thermodynamics is another way of guessing conditions describing the chemical
freezeout parameters extracted from high-energy experiments. We endorse the
possibility that the various chemical freezeout conditions should be
interpreted as different aspects of one universal condition.


title:
Are easily usable security libraries possible and how should experts
  work together to create them?

abstract:
  Due to non-experts also developing security relevant applications it is
necessary to support them too. Some improvements in the current research may
not reach or impact these developers. Nonetheless these developers use security
libraries. There are findings that even their usage is not easily possible and
applications are left vulnerable to supposedly treated threats. So it is
important to improve the usability of the security libraries. This is itself is
not straightforward because of a required maturing process for example. By
getting together experts of different involved areas, especially cryptographic
and API-usability experts, both of the problems can be tackled.


title:
An Adaptive Homomorphic Aperture Photometry Algorithm for Merging
  Galaxies

abstract:
  We present a novel automatic adaptive aperture photometry algorithm for
measuring the total magnitudes of merging galaxies with irregular shapes.
First, we use a morphological pattern recognition routine for identifying the
shape of an irregular source in a background-subtracted image. Then, we extend
the shape of the source by using the Dilation image operation to obtain an
aperture that is quasi-homomorphic to the shape of the irregular source. The
magnitude measured from the homomorphic aperture would thus have minimal
contamination from the nearby background. As a test of our algorithm, we
applied our technique to the merging galaxies observed by the Sloan Digital Sky
Survey (SDSS) and the Canada-France-Hawaii Telescope (CFHT). Our results
suggest that the adaptive homomorphic aperture algorithm can be very useful for
investigating extended sources with irregular shapes and sources in crowded
regions.


title: Genus 2 paramodular Eisenstein congruences

abstract:
  We investigate certain Eisenstein congruences, as predicted by Harder, for
level p paramodular forms of genus 2. We use algebraic modular forms to
generate new evidence for the conjecture. In doing this we see explicit
computational algorithms that generate Hecke eigenvalues for such forms.


title:
Dirichlet-to-Neumann Maps, Abstract Weyl-Titchmarsh $M$-Functions, and a
  Generalized Index of Unbounded Meromorphic Operator-Valued Functions

abstract:
  We introduce a generalized index for certain meromorphic, unbounded,
operator-valued functions. The class of functions is chosen such that energy
parameter dependent Dirichlet-to-Neumann maps associated to uniformly elliptic
partial differential operators, particularly, non-self-adjoint Schr\"odinger
operators, on bounded Lipschitz domains, and abstract operator-valued
Weyl-Titchmarsh $M$-functions and Donoghue-type $M$-functions corresponding to
closed extensions of symmetric operators belong to it.
  The principal purpose of this paper is to prove index formulas that relate
the difference of the algebraic multiplicities of the discrete eigenvalues of
Robin realizations of non-self-adjoint Schr\"{o}dinger operators, and more
abstract pairs of closed operators in Hilbert spaces with the generalized index
of the corresponding energy dependent Dirichlet-to-Neumann maps and abstract
Weyl-Titchmarsh $M$-functions, respectively.


title: Continued decay in the cyclotron line energy in Hercules X-1

abstract:
  The centroid energy Ecyc of the cyclotron line in the spectrum of the binary
X-ray pulsar Her X-1 had been found to decrease with time on a time scale of a
few tens of years - surprisingly short astrophysically. This was found for the
pulse phase averaged line centroid energy using observational data from various
X-ray satellites over the time frame 1996 to 2012, establishing a reduction of
about 4 keV. Here we report on the result of a new observation by NuSTAR
performed in August 2015. The earlier results are confirmed and strengthened,
with respect to both, the dependence of Ecyc on flux (it is still present after
2006) and the dependence on time: the long-term decay continued with the same
rate, corresponding to a reduction of about 5 keV in 20 years.


title:
Extended systematics of alpha decay half lives for exotic superheavy
  nuclei

abstract:
  The experimentally available data on the alpha decay half lives and Q? values
for 96 superheavy nuclei are used to fix the parameters for a modified version
of the Brown empirical formula through two fitting procedures which enables its
comparison with similar fits using Viola-Seaborg and Royer formulas. The new
expressions provide very good agreement with experimental data having fewer or
the same number of parameters. All formulas with the obtained parameters are
then extrapolated to generate half lives predictions for 125 unknown superheavy
alpha emitters. The nuclei where the employed empirical formulas maximally or
minimally diverge are pointed out and a selection of 36 nuclei with exceptional
superposition of predictions was made for experimental reference.


title:
Enhanced nonlinear imaging through scattering media using transmission
  matrix based wavefront shaping

abstract:
  Despite the tremendous progresses in wavefront control through or inside
complex scattering media, several limitations prevent reaching practical
feasibility for nonlinear imaging in biological tissues. While the optimization
of nonlinear signals might suffer from low signal to noise conditions and from
possible artifacts at large penetration depths, it has nevertheless been
largely used in the multiple scattering regime since it provides a guide star
mechanism as well as an intrinsic compensation for spatiotemporal distortions.
Here, we demonstrate the benefit of Transmission Matrix (TM) based approaches
under broadband illumination conditions, to perform nonlinear imaging. Using
ultrashort pulse illumination with spectral bandwidth comparable but still
lower than the spectral width of the scattering medium, we show strong
nonlinear enhancements of several orders of magnitude, through thicknesses of a
few transport mean free paths, which corresponds to millimeters in biological
tissues. Linear TM refocusing is moreover compatible with fast scanning
nonlinear imaging and potentially with acoustic based methods, which paves the
way for nonlinear microscopy deep inside scattering media.


title:
Monolithically integrated single quantum dots coupled to bowtie
  nanoantennas

abstract:
  Deterministically integrating semiconductor quantum emitters with plasmonic
nano-devices paves the way towards chip-scale integrable, true nanoscale
quantum photonics technologies. For this purpose, stable and bright
semiconductor emitters are needed, which moreover allow for CMOS-compatibility
and optical activity in the telecommunication band. Here, we demonstrate
strongly enhanced light-matter coupling of single near-surface ($<10\,nm$) InAs
quantum dots monolithically integrated into electromagnetic hot-spots of
sub-wavelength sized metal nanoantennas. The antenna strongly enhances the
emission intensity of single quantum dots by up to $\sim16\times$, an effect
accompanied by an up to $3.4\times$ Purcell-enhanced spontaneous emission rate.
Moreover, the emission is strongly polarised along the antenna axis with
degrees of linear polarisation up to $\sim85\,\%$. The results unambiguously
demonstrate the efficient coupling of individual quantum dots to
state-of-the-art nanoantennas. Our work provides new perspectives for the
realisation of quantum plasmonic sensors, step-changing photovoltaic devices,
bright and ultrafast quantum light sources and efficent nano-lasers.


title:
Predicting Glaucoma Visual Field Loss by Hierarchically Aggregating
  Clustering-based Predictors

abstract:
  This study addresses the issue of predicting the glaucomatous visual field
loss from patient disease datasets. Our goal is to accurately predict the
progress of the disease in individual patients. As very few measurements are
available for each patient, it is difficult to produce good predictors for
individuals. A recently proposed clustering-based method enhances the power of
prediction using patient data with similar spatiotemporal patterns. Each
patient is categorized into a cluster of patients, and a predictive model is
constructed using all of the data in the class. Predictions are highly
dependent on the quality of clustering, but it is difficult to identify the
best clustering method. Thus, we propose a method for aggregating cluster-based
predictors to obtain better prediction accuracy than from a single
cluster-based prediction. Further, the method shows very high performances by
hierarchically aggregating experts generated from several cluster-based
methods. We use real datasets to demonstrate that our method performs
significantly better than conventional clustering-based and patient-wise
regression methods, because the hierarchical aggregating strategy has a
mechanism whereby good predictors in a small community can thrive.


title: Phase stability of lanthanum orthovanadate at high-pressure

abstract:
  When monoclinic monazite-type LaVO4 (space group P21/n) is squeezed up to 12
GPa at room temperature, a phase transition to another monoclinic phase has
been found. The structure of the high-pressure phase of LaVO4 is indexed with
the same space group (P21/n), but with a larger unit-cell in which the number
of atoms is doubled. The transition leads to an 8% increase in the density of
LaVO4. The occurrence of such a transition has been determined by x-ray
diffraction, Raman spectroscopy, and ab initio calculations. The combination of
the three techniques allows us to also characterize accurately the pressure
evolution of unit-cell parameters and the Raman (and IR)-active phonons of the
low- and high-pressure phase. In particular, room-temperature equations of
state have been determined. The changes driven by pressure in the crystal
structure induce sharp modifications in the color of LaVO4 crystals, suggesting
that behind the monoclinic-to-monoclinic transition there are important changes
of the electronic properties of LaVO4.


title:
Interference features in scanning gate conductance maps of quantum point
  contacts with disorder

abstract:
  We consider quantum point contacts (QPCs) defined within disordered
two-dimensional electron gases as studied by scanning gate microscopy. We
evaluate the conductance maps in the Landauer approach and wave function
picture of electron transport for samples with both low and high electron
mobility at finite temperatures. We discuss the spatial distribution of the
impurities in the context of the branched electron flow. We reproduce the
surprising temperature stability of the experimental interference fringes far
from the QPC. Next, we discuss -- previously undescribed -- funnel-shaped
features that accompany splitting of the branches visible in previous
experiments. Finally, we study elliptical interference fringes formed by an
interplay of scattering by the point-like impurities and by the scanning probe.
We discuss the details of the elliptical features as functions of the tip
voltage and the temperature, showing that the first interference fringe is very
robust against the thermal widening of the Fermi level. We present a simple
analytical model that allows for extraction of the impurity positions and the
electron gas depletion radius induced by the negatively charged tip of the
atomic force microscope, and apply this model on experimental scanning gate
images showing such elliptical fringes.


title:
Excitation and charge transfer in low-energy hydrogen atom collisions
  with neutral atoms: Theory, comparisons, and application to Ca

abstract:
  A theoretical method for the estimation of cross sections and rates for
excitation and charge transfer processes in low-energy hydrogen atom collisions
with neutral atoms, based on an asymptotic two-electron model of ionic-covalent
interactions in the neutral atom-hydrogen atom system, is presented. The
calculation of potentials and non-adiabatic radial couplings using the method
is demonstrated. The potentials are used together with the multi-channel
Landau-Zener model to calculate cross sections and rate coefficients. The main
feature of the method is that it employs asymptotically exact atomic
wavefunctions, which can be determined from known atomic parameters. The method
is applied to Li+H, Na+H, and Mg+H collisions, and the results compare well
with existing detailed full-quantum calculations. The method is applied to the
astrophysically important problem of Ca+H collisions, and rate coefficients are
calculated for temperatures in the range 1000-20000 K.


title: Consistency of non-minimal renormalisation schemes

abstract:
  Non-minimal renormalisation schemes such as the momentum subtraction scheme
(MOM) have frequently been used for physical computations. The consistency of
such a scheme relies on the existence of a coupling redefinition linking it to
MSbar. We discuss the implementation of this procedure in detail for a general
theory and show how to construct the relevant redefinition up to three-loop
order, for the case of a general theory of fermions and scalars in four
dimensions and a general scalar theory in six dimensions.


title: How not to discretize the control

abstract:
  In this short note, we address the discretization of optimal control problems
with higher order polynomials. We develop a necessary and sufficient condition
to ensure that weak limits of discrete feasible controls are feasible for the
original problem. We show by means of a simple counterexample that a naive
discretization by higher order polynomials can lead to non-feasible limits of
sequences of discrete solutions.


title: Magnetic Flux Cancellation in Ellerman Bombs

abstract:
  Ellerman Bombs (EBs) are often found co-spatial with bipolar photospheric
magnetic fields. We use H$\alpha$ imaging spectroscopy along with Fe I 6302.5
\AA\ spectro-polarimetry from the Swedish 1-m Solar Telescope (SST), combined
with data from the Solar Dynamic Observatory (SDO) to study EBs and the
evolution of the local magnetic fields at EB locations. The EBs are found via
an EB detection and tracking algorithm. We find, using NICOLE inversions of the
spectro-polarimetric data, that on average (3.43 $\pm$ 0.49) x 10$^{24}$ ergs
of stored magnetic energy disappears from the bipolar region during the EBs
burning. The inversions also show flux cancellation rates of 10$^{14}$ -
10$^{15}$ Mx s$^{-1}$, and temperature enhancements of 200 K at the detection
footpoints. We investigate near-simultaneous flaring of EBs due to co-temporal
flux emergence from a sunspot, which shows a decrease in transverse velocity
when interacting with an existing, stationary area of opposite polarity
magnetic flux and the EBs are formed. We also show that these EBs can get
fueled further by additional, faster moving, negative magnetic flux regions.


title: Tuning the Cosmological Constant, Broken Scale Invariance, Unitarity

abstract:
  We study gravity coupled to a cosmological constant and a scale but not
conformally invariant sector. In Minkowski vacuum, scale invariance is
spontaneously broken. We consider small fluctuations around the Minkowski
vacuum. At the linearised level we find that the trace of metric perturbations
receives a positive or negative mass squared contribution. However, only for
the Fierz-Pauli combination the theory is free of ghosts. The mass term for the
trace of metric perturbations can be cancelled by explicitly breaking scale
invariance. This reintroduces fine-tuning. Models based on four form field
strength show similarities with explicit scale symmetry breaking due to
quantisation conditions.


title:
Diffusion in the presence of a local attracting factor: Theory and some
  interdisciplinary applications

abstract:
  We study a simple model of a random walker in d dimensions moving in the
presence of a local heterogeneous attracting factor expressed in terms of an
assigned space-dependent "attractiveness function", a situation frequently
encountered in the study of various diffusion problems. The corresponding
drift-diffusion equation and the explicit expressions for the velocity field
and the diffusion coefficient are obtained and discussed. We consider some
examples of applications of the results obtained to chemotactic diffusion
processes and social dynamics.


title: Chiral sine-Gordon model

abstract:
  We investigate the chiral sine-Gordon model using the renormalization group
method. The chiral sine-Gordon model is a model for $G$-valued fields and
describes a new class of phase transitions, where $G$ is a compact Lie group.
We show that the model is renormalizable by means of a perturbation expansion
and we derive beta functions of the renormalization group theory. The
coefficients of beta functions are represented by the Casimir invariants. The
model contains both asymptotically free and ultraviolet strong coupling
regions. The beta functions have a zero which is a bifurcation point that
divides the parameter space into two regions; they are the weak coupling region
and the strong coupling region. A large-$N$ model is also considered. This
model is reduced to the conventional sine-Gordon model that describes the
Kosterlitz-Thouless transition near the fixed point. In the strong-coupling
limit, the model is reduced to a $U(N)$ matrix model.


title:
On sequences of large homoclinic solutions for a difference equations on
  the integers involving oscillatory nonlinearities

abstract:
  In this paper, we determine a concrete interval of positive parameters
$\lambda$, for which we prove the existence of infinitely many homoclinic
solutions for a discrete problem $-\Delta \left( a(k)\phi _{p}(\Delta
u(k-1))\right) +b(k)\phi_{p}(u(k))=\lambda f(k,u(k))$, $k\in Z$; where the
nonlinear term $f : Z \times R \rightarrow R$ has an appropriate oscillatory
behavior at infinity, without any symmetry assumptions. The approach is based
on critical point theory.


title: Prospects for the ensemble asteroseismology in young open clusters

abstract:
  This is a progress report on the ongoing project dealing with ensemble
asteroseismology of B-type stars in young open clusters. The project is aimed
at searches for B-type pulsating stars in open clusters, determination of
atmospheric parameters for some members and seismic modeling of B-type
pulsators. Some results for NGC 457, IC 1805, IC 4996, NGC 6910 and alpha Per
open clusters are presented. For the last cluster, BRITE data for five members
were used.


title: Ion clustering in aqueous salt solutions near the liquid/vapor interface

abstract:
  Molecular dynamics simulations of aqueous NaCl, KCl, NaI, and KI solutions
are used to study the effects of salts on the properties of the liquid/vapor
interface. The simulations use the models which include both charge transfer
and polarization effects. Pairing and the formation of larger ion clusters
occurs both in the bulk and surface region, with a decreased tendency to form
larger clusters near the interface. An analysis of the roughness of the surface
reveals that the chloride salts, which have less tendency to be near the
surface, have a roughness that is less than pure water, while the iodide salts,
which have a greater surface affinity, have a larger roughness. This suggests
that ions away from the surface and ions near the surface affect the interface
in opposite ways.


title: Real-Time Near-Field Terahertz Imaging with Atomic Optical Fluorescence

abstract:
  Terahertz (THz) near-field imaging is a flourishing discipline [1], with
applications from fundamental studies of beam propagation [2,3] to the
characterisation of metameterials [4,5] and waveguides [6,7]. Beating the
diffraction limit typically involves rastering structures or detectors with
length scale shorter than the radiation wavelength; in the THz domain this has
been achieved using a number of techniques including scattering tips [8,9] and
apertures [10]. Alternatively, mapping THz fields onto an optical wavelength
and imaging the visible light removes the requirement for scanning a local
probe, speeding up image collection times [11,12]. Here we report THz to
optical conversion using a gas of highly excited `Rydberg' atoms. By collecting
THz-induced optical fluorescence we demonstrate a real-time image of a THz
standing wave and we use well-known atomic properties to calibrate the THz
field strength. The mono-atomic gas does not distort the THz field and offers
the potential to immerse structures within the THz-to-optical conversion
medium.


title:
Next-to-leading order effective field theory $\Lambda N\to NN$ potential
  in coordinate space

abstract:
  The potential in coordinate space for the $\Lambda N\to NN$ weak transition,
which drives the weak decay of most hypernuclei, is derived within the
effective field theory formalism up to next-to-leading order. This coordinate
space potential allows us to discuss how the different contributions to the
potential add up at the different scales. Explicit expressions are given for
each two-pion-exchange diagram contributing to the interaction. The potential
is also reorganized into spin and isospin operators, and the coefficient for
each operator is given in analytical form and represented in coordinate space.
The relevance of explicitly including the mass differences among the baryons
appearing in the two-pion-exchange diagrams is also discussed in detail.


title: Minimal Model for Dynamic Bonding in Colloidal Transient Networks

abstract:
  We investigate a model for colloidal network formation using Brownian
Dynamics computer simulations. Hysteretic springs establish transient bonds
between particles with repulsive core. If a bonded pair is separated by a
cutoff distance, the spring vanishes and reappears only if the two particles
contact each other. We present results for the the bond lifetime distribution
and investigate the properties of the van Hove dynamical two-body correlation
function. The model displays crossover from fluid-like dynamics, via transient
network formation, to arrested quasi-static network behavior.


title: The Higgs Mechanism from an extra dimension

abstract:
  The standard $SU(2) \times U(1)$ fields are considered in 4D plus one extra
compact dimension. As a result two basic effects are obtained. First, four
Goldstone-like scalars are produced, three of them are used to create
longitudinal modes of the $W,Z$ fields, while the fourth becomes the Higgs-like
scalar. Second, $W$ and $Z$ get their masses from the extra compact dimension
with the standard pattern of symmetry violation. The resulting theory has the
same fields as in the standard model, but without the Higgs vacuum average. The
properties of the new Higgs scalar and its interaction with fermions are
briefly discussed.


title: Generalized upper bound for inelastic diffraction

abstract:
  For the inelastic diffraction, we obtain an upper bound valid in the whole
range of the elastic scattering amplitude variation allowed by unitarity. We
discuss the energy dependence of the inelastic diffractive cross-section on the
base of this bound and recent LHC data.


title: Modeling the Orbital Sampling Effect of Extrasolar Moons

abstract:
  The orbital sampling effect (OSE) appears in phase-folded transit light
curves of extrasolar planets with moons. Analytical OSE models have hitherto
neglected stellar limb darkening and non-zero transit impact parameters and
assumed that the moon is on a circular, co-planar orbit around the planet.
Here, we present an analytical OSE model for eccentric moon orbits, which we
implement in a numerical simulator with stellar limb darkening that allows for
arbitrary transit impact parameters. We also describe and publicly release a
fully numerical OSE simulator (PyOSE) that can model arbitrary inclinations of
the transiting moon orbit. Both our analytical solution for the OSE and PyOSE
can be used to search for exomoons in long-term stellar light curves such as
those by Kepler and the upcoming PLATO mission. Our updated OSE model offers an
independent method for the verification of possible future exomoon claims via
transit timing variations and transit duration variations. Photometrically
quiet K and M dwarf stars are particularly promising targets for an exomoon
discovery using the OSE.


title:
On the generalized Zalcman functional $\lambda a_n^2-a_{2n-1}$ in the
  close-to-convex family

abstract:
  Let ${\mathcal S}$ denote the class of all functions
$f(z)=z+\sum_{n=2}^{\infty}a_{n}z^{n}$ analytic and univalent in the unit disk
$\ID$. For $f\in {\mathcal S}$, Zalcman conjectured that $|a_n^2-a_{2n-1}|\leq
(n-1)^2$ for $n\geq 3$. This conjecture has been verified only certain values
of $n$ for $f\in {\mathcal S}$ and for all $n\ge 4$ for the class $\mathcal C$
of close-to-convex functions (and also for a couple of other classes). In this
paper we provide bounds of the generalized Zalcman coefficient functional
$|\lambda a_n^2-a_{2n-1}|$ for functions in $\mathcal C$ and for all $n\ge 3$,
where $\lambda$ is a positive constant. In particular, our special case settles
the open problem on the Zalcman inequality for $f\in \mathcal C$ (i.e. for the
case $\lambda =1$ and $n=3$).


title: Salt-specific effects in lysozyme solutions

abstract:
  The effects of additions of low-molecular-mass salts on the properties of
aqueous lysozyme solutions are examined by using the cloud-point temperature,
$T_{cloud}$, measurements. Mixtures of protein, buffer, and simple salt in
water are studied at pH=6.8 (phosphate buffer) and pH=4.6 (acetate buffer). We
show that an addition of buffer in the amount above $I_{buffer} = 0.6$ mol
dm$^{-3}$ does not affect the $T_{cloud}$ values. However, by replacing a
certain amount of the buffer electrolyte by another salt, keeping the total
ionic strength constant, we can significantly change the cloud-point
temperature. All the salts de-stabilize the solution and the magnitude of the
effect depends on the nature of the salt. Experimental results are analyzed
within the framework of the one-component model, which treats the
protein-protein interaction as highly directional and of short-range. We use
this approach to predict the second virial coefficients, and liquid-liquid
phase diagrams under conditions, where $T_{cloud}$ is determined
experimentally.


title:
Constraints on non-flat cosmologies with massive neutrinos after Planck
  2015

abstract:
  We investigate two dark energy cosmological models (i.e., the $\Lambda$CDM
and $\phi$CDM models) with massive neutrinos assuming two different neutrino
mass hierarchies in both the spatially flat and non-flat scenarios, where in
the $\phi$CDM model the scalar field possesses an inverse power-law potential,
$V(\phi)\propto {\phi}^{-\alpha}$ ($\alpha>0$). Cosmic microwave background
data from Planck 2015, baryon acoustic oscillations data from 6dFGS, SDSS-MGS,
BOSS-LOWZ and BOSS CMASS-DR11, the JLA compilation of Type Ia supernova
apparent magnitude observations, and the Hubble Space Telescope $H_0$ prior,
are jointly employed to constrain the model parameters. We first determine
constraints assuming three species of degenerate massive neutrinos. In the
spatially flat (non-flat) $\Lambda$CDM model, the sum of neutrino masses is
bounded as $\Sigma m_{\nu} < 0.165 (0.299)$ eV at 95% confidence level (CL).
Correspondingly, in the flat (non-flat) $\phi$CDM model, we find $\Sigma
m_{\nu} < 0.164 (0.301)$ eV at 95% CL. The inclusion of spatial curvature as a
free parameter results in a significant broadening of confidence regions for
$\Sigma m_{\nu}$ and other parameters. In the scenario where the total neutrino
mass is dominated by the heaviest neutrino mass eigenstate, we can obtain the
similar conclusions as those obtained in the degenerate neutrino mass scenario.
In addition, the results show that the bounds on $\Sigma m_{\nu}$ based on two
different neutrino mass hierarchies have insignificant differences in the
spatially flat case for both the $\Lambda$CDM and $\phi$CDM models, however,
the corresponding differences are larger in the non-flat case.


title: Generalized Zalcman conjecture for convex functions of order $\alpha$

abstract:
  Let $\mathcal S$ denote the class of all functions of the form
$f(z)=z+a_2z^2+a_3z^3+\cdots$ which are analytic and univalent in the open unit
disk $\ID$ and, for $\lambda >0$, let $\Phi_\lambda (n,f)=\lambda
a_n^2-a_{2n-1}$ denote the generalized Zalcman coefficient functional. Zalcman
conjectured that if $f\in \mathcal S$, then $|\Phi_1 (n,f)|\leq (n-1)^2$ for
$n\ge 3$. The functional of the form $\Phi_\lambda (n,f)$ is indeed related to
Fekete-Szeg\H{o} functional of the $n$-th root transform of the corresponding
function in $\mathcal S$. This conjecture has been verified for a certain
special geometric subclasses of $\mathcal S$ but the conjecture remains open
for $f\in {\mathcal S}$ and for $n > 6$. In the present paper, we prove sharp
bounds on $|\Phi_\lambda (n,f)|$ for $f\in \mathcal{F}(\alpha )$ and for all
$n\geq 3$, in the case that $\lambda$ is a positive real parameter, where $
\mathcal{F}(\alpha )$ denotes the family of all functions $f\in {\mathcal S}$
satisfying the condition $${\rm Re } \left( 1+\frac{zf''(z)}{f'(z)}\right) >
\alpha ~\mbox{ for $z\in \ID$}, $$ where $-1/2\leq \alpha <1$. Thus, the
present article proves the generalized Zalcman conjecture for convex functions
of order $\alpha$, $\alpha \in [-1/2,1)$.


title:
A Proximal Point Algorithm for Minimum Divergence Estimators with
  Application to Mixture Models

abstract:
  Estimators derived from a divergence criterion such as $\varphi-$divergences
are generally more robust than the maximum likelihood ones. We are interested
in particular in the so-called MD$\varphi$DE, an estimator built using a dual
representation of $\varphi$--divergences. We present in this paper an iterative
proximal point algorithm which permits to calculate such estimator. This
algorithm contains by its construction the well-known EM algorithm. Our work is
based on the paper of \citep{Tseng} on the likelihood function. We provide
several convergence properties of the sequence generated by the algorithm, and
improve the existing results by relaxing the identifiability condition on the
proximal term, a condition which is not verified for most mixture models and
hard to be verified for non mixture ones. Since convergence analysis uses
regularity conditions (continuity and differentiability) of the objective
function, which has a supremal form, we find it useful to present some
analytical approaches for studying such functions. Convergence of the EM
algorithm is discussed here again in a Gaussian and Weibull mixtures in the
spirit of our approach. Simulations are provided to confirm the validity of our
work and the robustness of the resulting estimators against outliers.


title:
Higher dimensional generalization of Buchdahl-Vaidya-Tikekar model for
  super compact star

abstract:
  We obtain higher dimensional solutions for super compact star for the
Buchdahl-Vaidya-Tikekar metric ansatz. In particular, Vaidya and Tikekar
characterized the $3$-geometry by a parameter, $K$ which is related to the sign
of density gradient. It turns out that the key pressure isotropy equation
continues to have the same Gauss form, and hence $4$-dimensional solutions can
be taken over to higher dimensions with $K$ satisfying the relation, $K_n =
(K_4-n+4)/(n-3)$ where subscript refers to dimension of spacetime. Further
$K\geq0$ is required else density would have undesirable feature of increasing
with radius, and the equality indicates a constant density star described by
the Schwarzschild interior solution. This means for a given $K_4$, maximum
dimension could only be $n=K_4+4$, else $K_n$ will turn negative.


title: LikeDM: likelihood calculator of dark matter detection

abstract:
  With the large progress in searches for dark matter (DM) particles with
indirect and direct methods, we develop a numerical tool that enables fast
calculations of the likelihoods of specified DM particle models given a number
of observational data, such as charged cosmic rays from space-borne experiments
(e.g., PAMELA, AMS-02), gamma-rays from the Fermi space telescope, and
underground direct detection experiments. The purpose of this tool --- LikeDM,
likelihood calculator for dark matter detection --- is to bridge the gap
between a particle model of DM and the observational data. The intermediate
steps between these two, including the astrophysical backgrounds, the
propagation of charged particles, the analysis of Fermi gamma-ray data, as well
as the DM velocity distribution and the nuclear form factor, have been dealt
with in the code. We release the first version (v1.0) focusing on the
constraints from indirect detection of DM with charged cosmic and gamma rays.
Direct detection will be implemented in the next version. This manual describes
the framework, usage, and related physics of the code. The code LikeDM can be
download from https://likedm.hepforge.org/

categories: hep-ph astro-ph.HE physics.comp-ph physics.data-an


title: Deep Multimodal Feature Analysis for Action Recognition in RGB+D Videos

abstract:
  Single modality action recognition on RGB or depth sequences has been
extensively explored recently. It is generally accepted that each of these two
modalities has different strengths and limitations for the task of action
recognition. Therefore, analysis of the RGB+D videos can help us to better
study the complementary properties of these two types of modalities and achieve
higher levels of performance. In this paper, we propose a new deep autoencoder
based shared-specific feature factorization network to separate input
multimodal signals into a hierarchy of components. Further, based on the
structure of the features, a structured sparsity learning machine is proposed
which utilizes mixed norms to apply regularization within components and group
selection between them for better classification performance. Our experimental
results show the effectiveness of our cross-modality feature analysis framework
by achieving state-of-the-art accuracy for action classification on five
challenging benchmark datasets.


title: Thermoelectric power quantum oscillations in the ferromagnet UGe$_2$

abstract:
  We present thermoelectric power and resistivity measurements in the
ferromagnet UGe$_2$ as a function of temperature and magnetic field. At low
temperature, huge quantum oscillations are observed in the thermoelectric power
as a function of the magnetic field applied along the $a$ axis. The frequencies
of the extreme orbits are determined and an analysis of the cyclotron masses is
performed following different theoretical approaches for quantum oscillations
detected in the thermoelectric power. They are compared to those obtained by
Shubnikov-de Haas experiments on the same crystal and previous de Haas-van
Alphen experiments. The agreement of the different probes confirms
thermoelectric power as an excellent probe to extract simultaneously both
microscopic and macroscopic information on the Fermi-surface properties.
Band-structure calculations of UGe$_2$ in the ferromagnetic state are compared
to the experiment.


title:
Pattern formation in a two-component reaction-diffusion system with
  delayed processes on a network

abstract:
  Reaction-diffusion systems with time-delay defined on complex networks have
been studied in the framework of the emergence of Turing instabilities. The use
of the Lambert W-function allowed us get explicit analytic conditions for the
onset of patterns as a function of the main involved parameters, the
time-delay, the network topology and the diffusion coefficients. Depending on
these parameters, the analysis predicts whether the system will evolve towards
a stationary Turing pattern or rather to a wave pattern associated to a Hopf
bifurcation. The possible outcomes of the linear analysis overcome the
respective limitations of the single-species case with delay, and that of the
classical activator-inhibitor variant without delay. Numerical results gained
from the Mimura-Murray model support the theoretical approach.


title:
Robust cDNA microarray image segmentation and analysis technique based
  on Hough circle transform

abstract:
  One of the most challenging tasks in microarray image analysis is spot
segmentation. A solution to this problem is to provide an algorithm than can be
used to find any spot within the microarray image. Circular Hough
Transformation (CHT) is a powerful feature extraction technique used in image
analysis, computer vision, and digital image processing. CHT algorithm is
applied on the cDNA microarray images to develop the accuracy and the
efficiency of the spots localization, addressing and segmentation process. The
purpose of the applied technique is to find imperfect instances of spots within
a certain class of circles by applying a voting procedure on the cDNA
microarray images for spots localization, addressing and characterizing the
pixels of each spot into foreground pixels and background simultaneously.
Intensive experiments on the University of North Carolina (UNC) microarray
database indicate that the proposed method is superior to the K-means method
and the Support vector machine (SVM). Keywords: Hough circle transformation,
cDNA microarray image analysis, cDNA microarray image segmentation, spots
localization and addressing, spots segmentation


title: Marangoni driven turbulence in high energy surface melting processes

abstract:
  Experimental observations of high-energy surface melting processes, such as
laser welding, have revealed unsteady, often violent, motion of the free
surface of the melt pool. Surprisingly, no similar observations have been
reported in numerical simulation studies of such flows. Moreover, the published
simulation results fail to predict the post-solidification pool shape without
adapting non-physical values for input parameters, suggesting the neglect of
significant physics in the models employed. The experimentally observed violent
flow surface instabilities, scaling analyses for the occurrence of turbulence
in Marangoni driven flows, and the fact that in simulations transport
coefficients generally have to be increased by an order of magnitude to match
experimentally observed pool shapes, suggest the common assumption of laminar
flow in the pool may not hold, and that the flow is actually turbulent. Here,
we use direct numerical simulations (DNS) to investigate the role of turbulence
in laser melting of a steel alloy with surface active elements. Our results
reveal the presence of two competing vortices driven by thermocapillary forces
towards a local surface tension maximum. The jet away from this location at the
free surface, separating the two vortices, is found to be unstable and highly
oscillatory, indeed leading to turbulence-like flow in the pool. The resulting
additional heat transport, however, is insufficient to account for the observed
differences in pool shapes between experiment and simulations.


title:
Cyclotomic discriminantal arrangements and diagram automorphisms of Lie
  algebras

abstract:
  Recently a new class of quantum integrable models, the cyclotomic Gaudin
models, were described in arXiv:1409.6937, arXiv:1410.7664. Motivated by these,
we identify a class of affine hyperplane arrangements that we call cyclotomic
discriminantal arrangements. We establish correspondences between the flag and
Aomoto complexes of such arrangements and chain complexes for nilpotent
subalgebras of Kac-Moody type Lie algebras with diagram automorphisms.
  As a byproduct, we show that the Bethe vectors of cyclotomic Gaudin models
associated to diagram automorphisms are nonzero.


title:
The effect of stirring on the heterogeneous nucleation of water and of
  clathrates of tetrahydrofuran/water mixtures

abstract:
  The statistics of liquid-to-crystal nucleation are measured for both water
and for clathrate-forming mixtures of tetrahydrofuran (THF) and water using an
automatic lag time apparatus (ALTA). We measure the nucleation temperature
using this apparatus in which a single sample is repeatedly cooled, nucleated
and thawed. The effect of stirring on nucleation has been evaluated numerically
and is discussed. We find that stirring of the solution makes no difference to
the nucleation temperature of a given solution in a given tube.


title: Radon-Nikodym property in L(X,Y)

abstract:
  Let X be a separable Banach space and Y a space which has the Radon-Nikodym
property. In this work, we show that L(X, Y) has the Radon-Nikodym property, if
L(X, Y) is weakly locally uniformly convex or if L(X, Y) is a weakly compactly
gen- erated space.


title:
N$_2$H$^+$ and N$^{15}$NH$^+$ towards the prestellar core 16293E in
  L1689N

abstract:
  Understanding the processes that could lead to enrichment of molecules in
$^{15}$N atoms is of particular interest in order to shed light on the
relatively large variations observed in the $^{14}$N/$^{15}$N ratio in various
solar system environments. Currently, the sample of molecular clouds where
$^{14}$N/$^{15}$N ratios have been measured is small and has to be enlarged in
order to allow statistically significant studies. In particular, the N$_2$H$^+$
molecule currently shows the largest spread of $^{14}$N/$^{15}$N ratios in
high-mass star forming regions. However, the $^{14}$N/$^{15}$N ratio in
N$_2$H$^+$ was obtained in only two low-mass star forming regions (L1544 and
B1b). The current work extends this sample to a third dark cloud. We targeted
the 16293E prestellar core, where the N$^{15}$NH$^+$ $J$=1-0 line was detected.
Using a model previously developed for the physical structure of the source, we
solved the molecular excitation with a non-local radiative transfer code. For
that purpose, we computed specific collisional rate coefficients for the
N$^{15}$NH$^+$-H$_2$ collisional system. As a first step of the analysis, the
N$_2$H$^+$ abundance profile was constrained by reproducing the N$_2$H$^+$
$J$=1-0 and 3-2 maps. A scaling factor was then applied to this profile to
match the N$^{15}$NH$^+$ $J$=1-0 spectrum. We derive a column density ratio
N$_2$H$^+$ / N$^{15}$NH$^+$ = $330^{+170}_{-100}$. The current estimate
$\sim$330 agrees with the value typical of the elemental isotopic ratio in the
local ISM. It is however lower than in some other cores, where values as high
as 1300 have been reported.


title: An observationally-driven kinetic approach to coronal heating

abstract:
  Coronal heating through the explosive release of magnetic energy remains an
open problem in solar physics. Recent hydrodynamical models attempt an
investigation by placing swarms of 'nanoflares' at random sites and times in
modeled one-dimensional coronal loops. We investigate the problem in three
dimensions, using extrapolated coronal magnetic fields of observed solar active
regions. We apply a nonlinear force-free field extrapolation above an observed
photospheric magnetogram of NOAA active region (AR) 11158. We then determine
the locations, energy contents, and volumes of 'unstable' areas, namely areas
prone to releasing magnetic energy due to locally accumulated electric current
density. Statistical distributions of these volumes and their fractal dimension
are inferred, investigating also their dependence on spatial resolution.
Further adopting a simple resistivity model, we infer the properties of the
fractally distributed electric fields in these volumes. Next, we monitor the
evolution of 10^5 particles (electrons and ions) obeying an initial Maxwellian
distribution with a temperature of 10 eV, by following their trajectories and
energization when subjected to the resulting electric fields. For computational
convenience, the length element of the magnetic-field extrapolation is 1
arcsec, much coarser than the particles collisional mean free path in the low
corona. The presence of collisions traps the bulk of the plasma around the
unstable volumes, or current sheets (UCS), with only a tail of the distribution
gaining substantial energy. Assuming that the distance between UCS is similar
to the collisional mean free path we find that the low active-region corona is
heated to 100-200 eV, corresponding to temperatures exceeding 2 MK, within tens
of seconds for electrons and thousands of seconds for ions. Fractally
distributed, nanoflare-triggening fragmented UCS ...


title: One- and two-photon scattering from generalized V-type atoms

abstract:
  The one- and two-photon scattering matrix S is obtained analytically for a
one-dimensional waveguide and a point-like scatterer with N excited levels
(generalized V -type atom). We argue that the two-photon scattering matrix
contains sufficient information to distinguish between different level
structures which are equivalent for single-photon scattering, such as a V -atom
with N = 2 excited levels and two two-level systems. In particular, we show
that the scattering with the V -type atom exhibits a destructive interference
effect leading to two-photon Coupled-Resonator-Induced Transparency, where the
nonlinear part of the two-photon scattering matrix vanishes when each incident
photon fulfills a single-photon condition for transparency.


title: Beyond the Melnikov method: a computer assisted approach

abstract:
  We present a Melnikov type approach for establishing transversal
intersections of stable/unstable manifolds of perturbed normally hyperbolic
invariant manifolds (NHIMs). The method is based on a new geometric proof of
the normally hyperbolic invariant manifold theorem, which establishes the
existence of a NHIM, together with its associated invariant manifolds and
bounds on their first and second derivatives. We do not need to know the
explicit formulas for the homoclinic orbits prior to the perturbation. We also
do not need to compute any integrals along such homoclinics. All needed bounds
are established using rigorous computer assisted numerics. Lastly, and most
importantly, the method establishes intersections for an explicit range of
parameters, and not only for perturbations that are `small enough', as is the
case in the classical Melnikov approach.


title:
Two- and three-phase equilibria in polydisperse Yukawa hard-sphere
  mixture. High temperature and mean spherical approximations

abstract:
  Phase behavior of the Yukawa hard-sphere polydisperse mixture with high
degree of polydispersity is studied using high temperature approximation (HTA)
and mean spherical approximation (MSA). We have extended and applied the scheme
developed to calculate the phase diagrams of polydisperse mixtures described by
the truncatable free energy models, i.e., the models with Helmholtz free energy
defined by the finite number of the moments of the species distribution
function. At high degree of polydispersity, several new features in the
topology of the two-phase diagram have been observed: the cloud and shadow
curves intersect twice and each of them forms a closed loop of the
ellipsoidal-like shape with the liquid and gas branches of the cloud curve
almost coinciding. Approaching a certain limiting value of the polydispersity
index, the cloud and shadow curves shrink and disappear. Beyond this limiting
value, polydispersity induces the appearance of the three-phase equilibrium at
lower temperatures. We present and analyze corresponding phase diagrams
together with distribution functions of three coexisting phases. In general,
good agreement was observed between predictions of the two different
theoretical methods, i.e., HTA and MSA. Our results confirm qualitative
predictions for the three-phase coexistence obtained earlier within the
framework of the van der Waals approach.


title: Ensemble controllability by Lie algebraic methods

abstract:
  We study possibilities to control an ensemble (a parameterized family) of
nonlinear control systems by a single parameter-independent control. Proceeding
by Lie algebraic methods we establish genericity of exact controllability
property for finite ensembles, prove sufficient approximate controllability
condition for a model problem in $\mathbb{R}^3$, and provide a variant of
Rashevsky-Chow theorem for approximate controllability of control-linear
ensembles.


title:
Recovering quantum properties of continuous-variable states in the
  presence of measurement errors

abstract:
  We present two results which combined enable one to reliably detect
multimode, multipartite entanglement in the presence of measurement errors. The
first result leads to a method to compute the best (approximated) physical
covariance matrix given a measured non-physical one. The other result states
that a widely used entanglement condition is a consequence of negativity of
partial transposition. Our approach can quickly verify entanglement of
experimentally obtained multipartite states, which is demonstrated on several
realistic examples. Compared to existing detection schemes, ours is very simple
and efficient. In particular, it does not require any complicated
optimizations.


title: Simplicial Complex Entropy

abstract:
  We propose an entropy function for simplicial complices. Its value gives the
expected cost of the optimal encoding of sequences of vertices of the complex,
when any two vertices belonging to the same simplex are indistinguishable. We
show that the proposed entropy function can be computed efficiently. By
computing the entropy of several complices consisting of hundreds of simplices,
we show that the proposed entropy function can be used in the analysis of the
large sequences of simplicial complices that often appear in computational
topology applications.


title: Unveiling the origin of the radio emission in radio-quiet quasars

abstract:
  The origin of the radio emission in radio-quiet quasars (RQQs) has been a
matter of debate for a long time. It is not well understood whether the
emission is caused by star formation in the host galaxy or by black hole
activity of the active galactic nuclei (AGN). We shed some light on these
questions using the Very Long Baseline Interferometry (VLBI) technique to
search for RQQs in the field of the Cosmological Evolution Survey (COSMOS). The
extensive multi-wavelength coverage of the field (from radio to X-rays) was
used to classify RQQs, and the milli-arcsecond resolution of VLBI provides a
direct way to identify AGNs. In a sample of 18 RQQs we detected 3 using the
Very Long Baseline Array (VLBA) at 1.4 GHz. In this letter we report for the
first time on a sample of RQQs with a measured lower limit on the fraction of
radio emission coming from the AGN, thus demonstrating that the radio emission
of at least some RQQs is dominated by an AGN.


title:
Time-delayed quantum coherent Pyragas feedback control of photon
  squeezing in a degenerate parametric oscillator

abstract:
  Quantum coherent feedback control is a measurement-free control method fully
preserving quantum coherence. In this paper we show how time-delayed quantum
coherent feedback can be used to control the degree of squeezing in the output
field of a cavity containing a degenerate parametric oscillator. We focus on
the specific situation of Pyragas-type feedback control where time-delayed
signals are fed back directly into the quantum system. Our results show how
time-delayed feedback can enhance or decrease the degree of squeezing as a
function of time delay and feedback strength.


title: Isospin dynamics on neck fragmentation in isotopic nuclear reactions

abstract:
  The neck dynamics in Fermi-energy heavy-ion collisions, to probe the nuclear
symmetry energy in the domain of sub-saturation densities, is investigated
within an isospin dependent transport model. The single and double ratios of
neutron/proton from free nucleons and light clusters (complex particles) in the
isotopic reactions are analyzed systematically. Isospin effects of particles
produced from the neck fragmentations are explored, which are constrained
within the midrapidities ($|y/y_{proj}|<$0.3) and azimuthal angles
(70$^{o}\sim$110$^{o}$, 250$^{o}\sim$290$^{o}$) in semiperipheral nuclear
collisions. It is found that the ratios of the energetic isospin particles
strongly depend on the stiffness of nuclear symmetry energy and the effects
increase with softening the symmetry energy, which would be a nice probe for
extracting the symmetry energy below the normal density in experimentally. A
flat structure appears at the tail spectra from the double ratio distributions.
The neutron to proton ratio of light intermediate mass fragments (IMFs) with
charged number Z$\leq$8 is related to the density dependence of symmetry energy
with less sensitivity in comparison to the isospin ratios of nucleons and light
particles.


title: On the existence of almost Fano threefolds with del Pezzo fibrations

abstract:
  By Jahnke-Peternell-Radloff and Takeuchi, almost Fano threefolds with del
Pezzo fibrations were classified. Among them, there exists 10 classes such that
the existence of members of these was not proved. In this paper, we construct
such examples belonging to each of 10 classes.


title: Compact radio cores in radio-quiet AGNs

abstract:
  The mechanism of radio emission in radio-quiet (RQ) active galactic nuclei
(AGN) is still debated and might arise from the central AGN, from star
formation activity in the host, or from either of these sources. A direct
detection of compact and bright radio cores embedded in sources that are
classified as RQ can unambiguously determine whether a central AGN
significantly contributes to the radio emission. We search for compact,
high-surface-brightness radio cores in RQ AGNs that are caused unambiguously by
AGN activity. We used the Australian Long Baseline Array to search for compact
radio cores in four RQ AGNs located in the Extended Chandra Deep Field South
(ECDFS). We also targeted four radio-loud (RL) AGNs as a control sample. We
detected compact and bright radio cores in two AGNs that are classified as RQ
and in one that is classified as RL. Two RL AGNs were not imaged because the
quality of the observations was too poor. We report on a first direct evidence
of radio cores in RQ AGNs at cosmological redshifts. Our detections show that
some of the sources that are classified as RQ contain an active AGN that can
contribute significantly (about 50% or more) to the total radio emission.


title: BreakingNews: Article Annotation by Image and Text Processing

abstract:
  Building upon recent Deep Neural Network architectures, current approaches
lying in the intersection of computer vision and natural language processing
have achieved unprecedented breakthroughs in tasks like automatic captioning or
image retrieval. Most of these learning methods, though, rely on large training
sets of images associated with human annotations that specifically describe the
visual content. In this paper we propose to go a step further and explore the
more complex cases where textual descriptions are loosely related to the
images. We focus on the particular domain of News articles in which the textual
content often expresses connotative and ambiguous relations that are only
suggested but not directly inferred from images. We introduce new deep learning
methods that address source detection, popularity prediction, article
illustration and geolocation of articles. An adaptive CNN architecture is
proposed, that shares most of the structure for all the tasks, and is suitable
for multitask and transfer learning. Deep Canonical Correlation Analysis is
deployed for article illustration, and a new loss function based on Great
Circle Distance is proposed for geolocation. Furthermore, we present
BreakingNews, a novel dataset with approximately 100K news articles including
images, text and captions, and enriched with heterogeneous meta-data (such as
GPS coordinates and popularity metrics). We show this dataset to be appropriate
to explore all aforementioned problems, for which we provide a baseline
performance using various Deep Learning architectures, and different
representations of the textual and visual features. We report very promising
results and bring to light several limitations of current state-of-the-art in
this kind of domain, which we hope will help spur progress in the field.


title:
CRPropa 3 - a Public Astrophysical Simulation Framework for Propagating
  Extraterrestrial Ultra-High Energy Particles

abstract:
  We present the simulation framework CRPropa version 3 designed for efficient
development of astrophysical predictions for ultra-high energy particles. Users
can assemble modules of the most relevant propagation effects in galactic and
extragalactic space, include their own physics modules with new features, and
receive on output primary and secondary cosmic messengers including nuclei,
neutrinos and photons. In extension to the propagation physics contained in a
previous CRPropa version, the new version facilitates high-performance
computing and comprises new physical features such as an interface for galactic
propagation using lensing techniques, an improved photonuclear interaction
calculation, and propagation in time dependent environments to take into
account cosmic evolution effects in anisotropy studies and variable sources.
First applications using highlighted features are presented as well.

categories: astro-ph.IM astro-ph.CO astro-ph.GA astro-ph.HE


title: The design and performance of an improved target for MICE

abstract:
  The linear motor driving the target for the Muon Ionisation Cooling
Experiment has been redesigned to improve its reliability and performance. A
new coil-winding technique is described which produces better magnetic
alignment and improves heat transport out of the windings. Improved
field-mapping has allowed the more precise construction to be demonstrated, and
an enhanced controller exploits the full features of the hardware, enabling
increased acceleration and precision. The new user interface is described and
analysis of performance data to monitor friction is shown to allow quality
control of bearings and a measure of the ageing of targets during use.


title:
Ab initio molecular dynamics study of collective excitations in liquid
  H$_2$O and D$_2$O: Effect of dispersion corrections

abstract:
  The collective dynamics in liquid water is an active research topic
experimentally, theoretically and via simulations. Here, ab initio molecular
dynamics simulations are reported in heavy and ordinary water at temperature
323.15 K, or 50$^\circ$C. The simulations in heavy water were performed both
with and without dispersion corrections. We found that the dispersion
correction (DFT-D3) changes the relaxation of density-density time correlation
functions from a slow, typical of a supercooled state, to exponential decay
behaviour of regular liquids. This implies an essential reduction of the
melting point of ice in simulations with DFT-D3. Analysis of longitudinal (L)
and transverse (T) current spectral functions allowed us to estimate the
dispersions of acoustic and optic collective excitations and to observe the L-T
mixing effect. The dispersion correction shifts the L and T optic (O) modes to
lower frequencies and provides by almost thirty per cent smaller gap between
the longest-wavelength LO and TO excitations, which can be a consequence of a
larger effective high-frequency dielectric permittivity in simulations with
dispersion corrections. Simulation in ordinary water with the dispersion
correction results in frequencies of optic excitations higher than in D$_2$O,
and in a long-wavelength LO-TO gap of 24 ps$^{-1}$ (127 cm$^{-1}$).


title:
Highly Excited H2 in Herbig-Haro 7: Formation Pumping in Shocked
  Molecular Gas?

abstract:
  We have obtained K-band spectra at R~5,000 and angular resolution 0.3" of a
section of the Herbig-Haro 7 (HH7) bow shock, using the Near-Infrared Integral
Field Spectrograph at Gemini North. Present in the portion of the data cube
corresponding to the brightest part of the bow shock are emission lines of H2
with upper state energies ranging from ~6,000 K up to the dissociation energy
of H2, ~50,000 K. Because of low signal-to-noise ratios, the highest excitation
lines cannot be easily seen elsewhere in the observed region. However,
excitation temperatures, measured throughout much of the observed region using
lines from levels as high as 25,000 K, are a strong function of upper level
energy, indicating that the very highest levels are populated throughout. The
level populations in the brightest region are well fit by a two-temperature
model, with 98.5% of the emitting gas at T=1800 K and 1.5% at T=5200 K. The
bulk of the H2 line emission in HH7, from the 1,800 K gas, has previously been
well modeled by a continuous shock, but the 5,200 K component is inconsistent
with standalone standard continuous shock models. We discuss various possible
origins for the hot component and suggest that this component is H2 newly
reformed on dust grains and then ejected from them, presumably following
dissociation of some of the H2 by the shock.


title:
Reciprocity breaking during nonlinear propagation of adapted beams
  through random media

abstract:
  Adaptive optics (AO) systems rely on the principle of reciprocity, or
symmetry with respect to the interchange of point sources and receivers. These
systems use the light received from a low power emitter on or near a target to
compensate profile aberrations acquired by a laser beam during linear
propagation through random media. If, however, the laser beam propagates
nonlinearly, reciprocity is broken, potentially undermining AO correction. Here
we examine the consequences of this breakdown. While discussed for general
random and nonlinear media, we consider specific examples of Kerr-nonlinear,
turbulent atmosphere.


title:
Frustration of freezing in a two dimensional hard-core fluid due to
  particle shape anisotropy

abstract:
  The freezing mechanism suggested for a fluid composed of hard disks [Huerta
et al., Phys. Rev. E, 2006, 74, 061106] is used here to probe the
fluid-to-solid transition in a hard-dumbbell fluid composed of overlapping hard
disks with a variable length between disk centers. Analyzing the trends in the
shape of second maximum of the radial distribution function of the planar
hard-dumbbell fluid it has been found that the type of transition could be
sensitive to the length of hard-dumbbell molecules. From the ${NpT}$ Monte
Carlo simulations data we show that if a hard-dumbbell length does not exceed
15% of the disk diameter, the fluid-to-solid transition scenario follows the
case of a hard-disk fluid, i.e., the isotropic hard-dumbbell fluid experiences
freezing. However, for a hard-dumbbell length larger than 15% of disk diameter,
there is evidence that fluid-to-solid transition may change to continuous
transition, i.e., such an isotropic hard-dumbbell fluid will avoid freezing.


title:
Variational principle for theories with dissipation from analytic
  continuation

abstract:
  The analytic continuation from the Euclidean domain to real space of the
one-particle irreducible quantum effective action is discussed in the context
of generalized local equilibrium states. Discontinuous terms associated with
dissipative behavior are parametrized in terms of a conveniently defined sign
operator. A generalized variational principle is then formulated, which allows
to obtain causal and real dissipative equations of motion from the analytically
continued quantum effective action. Differential equations derived from the
implications of general covariance determine the space-time evolution of the
temperature and fluid velocity fields and allow for a discussion of entropy
production including a local form of the second law of thermodynamics.


title: Fluid of fused spheres as a model for protein solution

abstract:
  In this work we examine thermodynamics of fluid with "molecules" represented
by two fused hard spheres, decorated by the attractive square-well sites.
Interactions between these sites are of short-range and cause association
between the fused-sphere particles. The model can be used to study the
non-spherical (or dimerized) proteins in solution. Thermodynamic quantities of
the system are calculated using a modification of Wertheim's thermodynamic
perturbation theory and the results compared with new Monte Carlo simulations
under isobaric-isothermal conditions. In particular, we are interested in the
liquid-liquid phase separation in such systems. The model fluid serves to
evaluate the effect of the shape of the molecules, changing from spherical to
more elongated (two fused spheres) ones. The results indicate that the effect
of the non-spherical shape is to reduce the critical density and temperature.
This finding is consistent with experimental observations for the antibodies of
non-spherical shape.


title: The Anatomy of a Search and Mining System for Digital Archives

abstract:
  Samtla (Search And Mining Tools with Linguistic Analysis) is a digital
humanities system designed in collaboration with historians and linguists to
assist them with their research work in quantifying the content of any textual
corpora through approximate phrase search and document comparison. The
retrieval engine uses a character-based n-gram language model rather than the
conventional word-based one so as to achieve great flexibility in language
agnostic query processing.
  The index is implemented as a space-optimised character-based suffix tree
with an accompanying database of document content and metadata. A number of
text mining tools are integrated into the system to allow researchers to
discover textual patterns, perform comparative analysis, and find out what is
currently popular in the research community.
  Herein we describe the system architecture, user interface, models and
algorithms, and data storage of the Samtla system. We also present several case
studies of its usage in practice together with an evaluation of the systems'
ranking performance through crowdsourcing.


title:
Ejecta Cloud from a Kinetic Impact on the Secondary of a Binary
  Asteroid: I. Mechanical Environment and Dynamic Model

abstract:
  An understanding of the post-impact dynamics of ejecta clouds are crucial to
the planning of a kinetic impact mission to an asteroid, and also has great
implications for the history of planetary formation. The purpose of this
article to track the evolution of ejecta produced by AIDA mission, which
targets for kinetic impact the secondary of near-Earth binary asteroid 65803
Didymos on 2022, and to feedback essential informations to AIDA's ongoing
phase-A study. We present a detailed dynamic model for the simulation of an
ejecta cloud from a binary asteroid that synthesizes all relevant forces based
on a previous analysis of the mechanical environment. We apply our method to
gain insight into the expected response of Didymos to the AIDA impact,
including the subsequent evolution of debris and dust. The crater scaling
relations from laboratory experiments are employed to approximate the
distributions of ejecta mass and launching speed. The size composition of
fragments is modeled with a power law fitted from observations of real asteroid
surface. A full-scale demonstration is simulated using parameters specified by
the mission. We report the results of the simulation, which include the
computed spread of the ejecta cloud and the recorded history of ejecta
accretion and escape. The violent period of the ejecta evolution is found to be
short, and is followed by a stage where the remaining ejecta is gradually
cleared. Solar radiation pressure proves to be efficient in cleaning dust-size
ejecta, and the simulation results after two weeks shows that large debris on
polar orbits (perpendicular to the binary orbital plane) has a survival
advantage over smaller ejecta and ejecta that keep to low latitudes.


title:
The contribution of electrostatic interactions to the collapse of
  oligoglycine in water

abstract:
  Protein solubility and conformational stability are a result of a balance of
interactions both within a protein and between protein and solvent. The
electrostatic solvation free energy of oligoglycines, models for the peptide
backbone, becomes more favorable with an increasing length, yet longer peptides
collapse due to the formation of favorable intrapeptide interactions between CO
dipoles, in some cases without hydrogen bonds. The strongly repulsive solvent
cavity formation is balanced by van der Waals attractions and electrostatic
contributions. In order to investigate the competition between solvent
exclusion and charge interactions we simulate the collapse of a long
oligoglycine comprised of 15 residues while scaling the charges on the peptide
from zero to fully charged. We examine the effect this has on the
conformational properties of the peptide. We also describe the approximate
thermodynamic changes that occur during the scaling both in terms of
intrapeptide potentials and peptide-water potentials, and estimate the
electrostatic solvation free energy of the system.


title: Uniqueness of immersed spheres in three-manifolds

abstract:
  Let $\mathcal{A}$ be a class of immersed surfaces in a three-manifold $M$,
and assume that $\mathcal{A}$ is modeled by an elliptic PDE over each tangent
plane. In this paper we solve the so-called Hopf uniqueness problem for the
class $\mathcal{A}$ under the only mild assumption of the existence of a
transitive family of candidate surfaces $\mathcal{S}\subset \mathcal{A}$.
Specifically, we prove that any compact immersed surface of genus zero in the
class $\mathcal{A}$ is a candidate sphere. This theorem unifies and extends
many previous uniqueness results of different contexts. As an application, we
settle in the affirmative a 1956 conjecture by A.D. Alexandrov on the
uniqueness of immersed spheres with prescribed curvatures in $\mathbb{R}^3$.


title: Analytical results on the polymerisation random graph model

abstract:
  The step-growth polymerisation of a mixture of arbitrary-functional monomers
is viewed as a time-continuos random graph process with degree bounds that are
not necessarily the same for different vertices. The sequence of degree bounds
acts as the only input parameter of the model. This parameter entirely defines
the timing of the phase transition. Moreover, the size distribution of
connected components features a rich temporal dynamics that includes: switching
between exponential and algebraic asymptotes and acquiring oscillations. The
results regarding the phase transition and the expected size of a connected
component are obtained in a closed form. An exact expression for the size
distribution is resolved up to the convolution power and is computable in
subquadratic time. The theoretical results are illustrated on a few special
cases, including a comparison with Monte Carlo simulations.


title: Modelling elliptically polarised Free Electron Lasers

abstract:
  A model of a Free Electron Laser operating with an elliptically polarised
undulator is presented. The equations describing the FEL interaction, including
resonant harmonic radiation fields, are averaged over an undulator period and
generate a generalised Bessel function scaling factor, similar to that of
planar undulator FEL theory. Comparison between simulations of the averaged
model with those of an unaveraged model show very good agreement in the linear
regime. Two unexpected results were found. Firstly, an increased coupling to
harmonics for elliptical rather than planar polarisarised undulators. Secondly,
and thought to be unrelated to the undulator polarisation, a signficantly
different evolution between the averaged and unaveraged simulations of the
harmonic radiation evolution approaching FEL saturation.


title: The Particle Enigma

abstract:
  The idea that particles are the basic constituents of all matter dates back
to ancient times and formed the basis of physical thought well into modern
times. The debate about whether light was a wave or a stream of particles also
lasted until relatively recently. It was the advent of de Broglie's work and
its implications that revolutionized the concept of an elementary particle --
but unfortunately did not banish the idea of a point particle despite its
difficulties in both classical and quantum physics. Some of these problems are
discussed in this essay, which covers chiral oscillations, Penrose's "zigzag"
picture of particles satisfying the Dirac equation, and some ideas derived from
string theory.


title: Tweaking Synchronisation by Link Addition

abstract:
  Natural and man-made networks often possess locally tree-like sub-structures.
Taking such tree networks as our starting point, we show how the addition of
links changes the synchronization properties of the network. We focus on two
different methods of link addition. The first method adds single links that
create cycles of a well-defined length. Following a topological approach we
introduce cycles of varying length and analyze how this feature, as well as the
position in the network, alters the synchronous behaviour. We show that in
particular short cycles can lead to a maximum change of the Laplacian's
eigenvalue spectrum, dictating the synchronization properties of such networks.
The second method connects a certain proportion of the initially unconnected
nodes. We simulate dynamical systems on these network topologies, with the
nodes' local dynamics being either a discrete or continuous. Here our main
result is that a certain amount of additional links, with the relative position
in the network being crucial, can be beneficial to ensure stable
synchronization.


title:
On the existence of positive solutions for a quasilinear Schr\"{o}dinger
  equation

abstract:
  This paper is concerned with the quasilinear Schr\"{o}dinger equation
\begin{equation*} -\Delta u+V(x)u- \Delta(u^2)u =h(u), \ \ \mbox{in} \
\mathbb{R}^N, \end{equation*} where $N\geq 3$. Under appropriate assumptions on
$V$ and $h$, we establish the existence of positive solutions. The main novelty
is that, unlike most other papers on this problem, we do not assume $h$ is
4-superlinear at infinity.


title:
Demonstration of quantum error correction for enhanced sensitivity of
  photonic measurements

abstract:
  The sensitivity of classical and quantum sensing is impaired in a noisy
environment. Thus, one of the main challenges facing sensing protocols is to
reduce the noise while preserving the signal. State of the art quantum sensing
protocols that rely on dynamical decoupling achieve this goal under the
restriction of long noise correlation times. We implement a proof-of-principle
experiment of a protocol to recover sensitivity by using an error correction
for photonic systems that does not have this restriction. The protocol uses a
protected entangled qubit to correct a single error. Our results show a
recovery of about 87% of the sensitivity, independent of the noise rate.


title:
Optimal amount of entanglement to distinguish quantum states
  instantaneously

abstract:
  We introduce a new aspect of nonlocality which arises when the task of
quantum states distinguishability is considered under local operations and
shared entanglement in the absence of classical communication. We find the
optimal amount of entanglement required to accomplish the task perfectly for
sets of orthogonal states and argue that it quantifies information nonlocality.


title:
Towards an ab initio theory for metal L-edge soft X-ray spectroscopy of
  molecular aggregates

abstract:
  The Frenkel exciton model was adapted to describe X-ray absorption and
resonant inelastic scattering spectra of polynuclear transition metal complexes
by means of restricted active space self-consistent field method. The proposed
approach allows to substantially decrease the requirements to computational
resources if compared to a full supermolecular quantum chemical treatment. This
holds true in particular in cases where the dipole approximation to the
electronic transition charge density can be applied. The computational protocol
was applied to the calculation of X-ray spectra of the hemin complex, which
forms dimers in aqueous solution. The aggregation effects were found to be
comparable to the spectral alterations due to the replacement of the axial
ligand by solvent molecules.


title: From maps between coloured operads to Swiss-Cheese algebras

abstract:
  In the present work, we extract pairs of topological spaces from maps between
coloured operads. We prove that those pairs are weakly equivalent to explicit
algebras over the one dimensional Swiss-Cheese operad SC_{1}. Thereafter, we
show that the pair formed by the space of long knots and the polynomial
approximation of (k)-immerions from R^{d} to R^{n} is an SC_{d+1}-algebra
assuming the Dwyer-Hess'conjecture.


title:
A Chandra Study of the Interstellar Metallicity in the Large Magellanic
  Cloud Using Supernova Remnants

abstract:
  We report on the results from our measurements of the interstellar medium
(ISM) abundances for the elements O, Ne, Mg, Si, and Fe in the Large Magellanic
Cloud (LMC). We used the archival Chandra data for sixteen supernova remnants
(SNRs) in the LMC (0453--68.5, DEM L71, N23, 0519--69.0, N49B, N132D, N49,
N206, 0534--69.9, DEM L238, N63A, Honeycomb, N157B, 0540--69.3, DEM L316B, and
0548--70.4). Our results represent LMC abundance measurements based on the
modern Chandra data. We place tight constraints on our measured elemental
abundances and find lower abundances than previous measurements by Hughes et
al. (1998) (by a factor of ~2 on average except for Si) who utilized similar
methods based on a smaller sample of ASCA data of SNRs in the LMC. We discuss
origins of the discrepancy between our Chandra and the previous ASCA
measurements. We also discuss our results in comparisons with the LMC abundance
measurements in literatures.


title: A model of viscoelasticity with time-dependent memory kernels

abstract:
  We consider the model equation arising in the theory of viscoelasticity
$$\partial_{tt} u-h_t(0)\Delta u -\int_{0}^\infty h_t'(s)\Delta u(t-s)d s+ f(u)
= g.$$ Here, the main feature is that the memory kernel $h_t(\cdot)$ depends on
time, allowing for instance to describe the dynamics of aging materials. From
the mathematical viewpoint, this translates into the study of dynamical systems
acting on time-dependent spaces, according to the newly established theory of
Di Plinio et al. In this first work, we give a proper notion of solution, and
we provide a global well-posedness result. The techniques naturally extend to
the analysis of the longterm behavior of the associated process, and can be
exported to cover the case of general systems with memory in presence of
time-dependent kernels.


title:
The internal energy expression of a long-range interaction complex
  system and its statistical physical properties

abstract:
  Considering the interactions of two arbitrary particles, we obtain an
internal energy expression of the complex system having long-range
interactions. Based on the postulate of "equal-probability principle" for all
microstates, the probability distribution function of the system is derived,
and consequently, some main statistical physical properties of the system are
revealed. It is important to find that the properties of a long-range
interaction system are very closely dependent on the interaction coefficient
and particle number.


title: Schwinger effect and backreaction in de Sitter spacetime

abstract:
  We consider the particle-antiparticle pairs produced by both a strong
electric field and de Sitter curvature. We investigate in 1 + 1 D the
backreaction of the pairs on the electromagnetic field. To do so we describe
the canonical quantization of an electromagnetic field in de Sitter space and
add in the Einstein-Maxwell equation the fermionic current induced by the
pairs. After solving this equation, we find that the electric field gets either
damped or unaffected depending on the value of the pair mass and the gauge
coupling. No enhancement of the electromagnetic field to support a
magnetogenesis scenario is found. The physical picture is that the Schwinger
pairs locally created screen the production and amplification of the
electromagnetic field. However, if one considers light bosons created by the
Schwinger mechanism, we report a solution to the Einstein-Maxwell equation with
an enhancement of the electromagnetic field. This solution could be a new path
to primordial magnetogenesis.


title: Non-autonomous interacting particle systems in continuum

abstract:
  A conservative Feller evolution on continuous bounded functions is
constructed from a weakly continuous, time-inhomogeneous transition function
describing a pure jump process on a locally compact Polish space. The
transition function is assumed to satisfy a Foster-Lyapunov type condition. The
results are applied to interacting particle systems in continuum, in particular
to general birth-and-death processes (including jumps). Particular examples
such as the BDLP and Dieckmann-Law model are considered in the end.


title: Popular matchings with two-sided preferences and one-sided ties

abstract:
  We are given a bipartite graph $G = (A \cup B, E)$ where each vertex has a
preference list ranking its neighbors: in particular, every $a \in A$ ranks its
neighbors in a strict order of preference, whereas the preference lists of $b
\in B$ may contain ties. A matching $M$ is popular if there is no matching $M'$
such that the number of vertices that prefer $M'$ to $M$ exceeds the number of
vertices that prefer $M$ to~$M'$. We show that the problem of deciding whether
$G$ admits a popular matching or not is NP-hard. This is the case even when
every $b \in B$ either has a strict preference list or puts all its neighbors
into a single tie. In contrast, we show that the problem becomes polynomially
solvable in the case when each $b \in B$ puts all its neighbors into a single
tie. That is, all neighbors of $b$ are tied in $b$'s list and $b$ desires to be
matched to any of them. Our main result is an $O(n^2)$ algorithm (where $n = |A
\cup B|$) for the popular matching problem in this model. Note that this model
is quite different from the model where vertices in $B$ have no preferences and
do not care whether they are matched or not.


title:
A data analysis method for isochronous mass spectrometry using two
  time-of-flight detectors at CSRe

abstract:
  The concept of isochronous mass spectrometry (IMS) applying two
time-of-flight (TOF) detectors originated many years ago at GSI. However, the
corresponding method for data analysis has never been discussed in detail.
Recently, two TOF detectors have been installed at CSRe and the new working
mode of the ring is under test. In this paper, a data analysis method for this
mode is introduced and tested with a series of simulations. The results show
that the new IMS method can significantly improve mass resolving power via the
additional velocity information of stored ions. This improvement is especially
important for nuclides with Lorentz factor $\gamma$-value far away from the
transition point $\gamma _t$ of the storage ring CSRe.


title: Applications of the Hermite-Hadamard inequality

abstract:
  We show how the recent improvement of the Hermite-Hadamard inequality can be
applied to some (not necessarily convex) planar figures and three-dimensional
bodies satisfying some kind of regularity.


title: Twists of superelliptic curves without rational points

abstract:
  Let $n\geq 2$ be an integer, $F$ a number field, $O_F$ the integral closure
of $\mathbb{Z}$ in $F$ and $N$ a positive multiple of $n$. The paper deals with
degree $N$ polynomials $P(T) \in O_F[T]$ such that the superelliptic curve
$Y^n=P(T)$ has twists $Y^n=d\cdot P(T)$ without $F$-rational points. We show
that this condition holds if the Galois group of $P(T)$ over $F$ has an element
which fixes no root of $P(T)$. Two applications are given. Firstly, we prove
that the proportion of degree $N$ polynomials $P(T) \in O_F[T]$ with height
bounded by $H$ and such that the associated curve satisfies the desired
condition tends to 1 as $H$ tends to $\infty$. Secondly, we connect the problem
with the recent notion of non-parametric extensions and give new examples of
such extensions with cyclic Galois groups.


title: Limit laws for self-loops and multiple edges in the configuration model

abstract:
  We consider self-loops and multiple edges in the configuration model as the
size of the graph tends to infinity. The interest in these random variables is
due to the fact that the configuration model, conditioned on being simple, is a
uniform random graph with prescribed degrees. Simplicity corresponds to the
absence of self-loops and multiple edges. We show that the number of self-loops
and multiple edges converges in distribution to two independent Poisson random
variables when the second moment of the empirical degree distribution
converges. We also provide an estimate on the total variation distance between
the number of self-loops and multiple edges and the Poisson limit of their sum.
This revisits previous works of Bollob\'as, of Janson, of Wormald and others.
The error estimates also imply sharp asymptotics for the number of simple
graphs with prescribed degrees. The error estimates follow from an application
of Stein's method for Poisson convergence, which is a novel method for this
problem. The asymptotic independence of self-loops and multiple edges follows
from a Poisson version of the Cram\'er-Wold device using thinning, which is of
independent interest. When the degree distribution has infinite second moment,
our general results break down. We can, however, prove a central limit theorem
for the number of self-loops, and for the multiple edges between vertices of
degrees much smaller than the square root of the size of the graph, or when we
truncate the degrees similarly. Our results and proofs easily extend to
directed and bipartite configuration models.


title:
Deductive Refinement of Species Labelling in Weakly Labelled Birdsong
  Recordings

abstract:
  Many approaches have been used in bird species classification from their
sound in order to provide labels for the whole of a recording. However, a more
precise classification of each bird vocalization would be of great importance
to the use and management of sound archives and bird monitoring. In this work,
we introduce a technique that using a two step process can first automatically
detect all bird vocalizations and then, with the use of 'weakly' labelled
recordings, classify them. Evaluations of our proposed method show that it
achieves a correct classification of 61% when used in a synthetic dataset, and
up to 89% when the synthetic dataset only consists of vocalizations larger than
1000 pixels.


title:
Tentative guidelines for the implementation of meta-structural and
  network software models of collective behaviours

abstract:
  We present some practical guidelines for software implementations of the
meta-structure project introduced in previous contributions. The purpose of the
meta-structure project is to implement models not only to detect, but also to
induce, change and maintain properties acquired by collective behaviours. We
consider the simplified case given by simulated collective behaviours where all
the microscopic spatial information (x, y, z) for each interacting agent per
instant are available ex-post in a suitable file. In particular, we introduce
guidelines to identify suitable mesoscopic variables (clusters) and
meta-structural properties suitable for representing coherence of collective
behaviours to be also used to induce coherence in non-coherent Brownian
behaviours. Furthermore, on the basis of previous contributions which studied
in real flocks properties related to topological distances as topological
ranges of interaction and scale invariance, here we introduce some comments and
proposals to be further studied and implemented for network models of
collective behaviours.
  Keywords: Cluster, Coherence, Ergodicity, Mesoscopic, Meta-Structure,
Network, Threshold.


title:
On Ambrosetti-Malchiodi-Ni conjecture on two-dimensional smooth bounded
  domains

abstract:
  We consider the problem $$
  \epsilon^2 \Delta
u-V(y)u+u^p\,=\,0,~~u>0~~\quad\mbox{in}\quad\Omega,~~\quad\frac {\partial
u}{\partial \nu}\,=\,0\quad\mbox{on}~~~\partial \Omega, $$ where $\Omega$ is a
bounded domain in $\mathbb R^2$ with smooth boundary, the exponent $p>1$,
$\epsilon>0$ is a small parameter, $V$ is a uniformly positive, smooth
potential on $\bar{\Omega}$, and $\nu$ denotes the outward normal of $\partial
\Omega$. Let $\Gamma$ be a curve intersecting orthogonally with $\partial
\Omega$ at exactly two points and dividing $\Omega$ into two parts. Moreover,
$\Gamma$ satisfies stationary and non-degeneracy conditions with respect to the
functional $\int_{\Gamma}V^{\sigma}$, where $\sigma=\frac {p+1}{p-1}-\frac 12$.
We prove the existence of a solution $u_\epsilon$ concentrating along the whole
of $\Gamma$, exponentially small in $\epsilon$ at any positive distance from
it, provided that $\epsilon$ is small and away from certain critical numbers.
In particular, this establishes the validity of the two dimensional case of a
conjecture by A. Ambrosetti, A. Malchiodi and W.-M. Ni(p.327, [4]).


title:
A comparative review of four formulations of noncommutative quantum
  mechanics

abstract:
  Four formulations of quantum mechanics on noncommutative Moyal phase spaces
are reviewed. These are the canonical, path-integral, Weyl-Wigner and
systematic formulations. Although all these formulations represent quantum
mechanics on a phase space with the same deformed Heisenberg algebra, there are
mathematical and conceptual differences which we discuss.


title:
Nonequilibrium self-energy functional approach to the dynamical Mott
  transition

abstract:
  The real-time dynamics of the Fermi-Hubbard model, driven out of equilibrium
by quenching or ramping the interaction parameter, is studied within the
framework of the nonequilibrium self-energy functional theory. A dynamical
impurity approximation with a single auxiliary bath site is considered as a
reference system and the time-dependent hybridization is optimized as
prescribed by the variational principle. The dynamical two-site approximation
turns out to be useful to study the real-time dynamics on short and
intermediate time scales. Depending on the strength of the interaction in the
final state, two qualitatively different response regimes are observed. For
both weak and strong couplings, qualitative agreement with previous results of
nonequilibrium dynamical mean-field theory is found. The two regimes are
sharply separated by a critical point at which the low-energy bath degree of
freedom decouples in the course of time. We trace the dependence of the
critical interaction of the dynamical Mott transition on the duration of the
interaction ramp from sudden quenches to adiabatic dynamics, and therewith link
the dynamical to the equilibrium Mott transition.


title:
Kinetic Study of anti-HIV drugs by Thermal Decomposition Analysis: A
  Multilayer Artificial Neural Network Propose

abstract:
  Kinetic study by thermal decomposition of antiretroviral drugs, Efavirenz
(EFV) and Lamivudine (3TC), usually present in the HIV cocktail, can be done by
individual adjustment of the solid decomposition models. However, in some cases
unacceptable errors are found using this methodology. To circumvent this
problem, here is proposed to use a multilayer perceptron neural network (MLP),
with an appropriate algorithm, which constitutes a linearization of the network
by setting weights between the input layer and the intermediate one and the use
of Kinetic models as activation functions of neurons in the hidden layer. The
interconnection weights between that intermediate layer and output layer
determines the contribution of each model in the overall fit of the
experimental data. Thus, the decomposition is assumed to be a phenomenon that
can occur following different kinetic processes. In the investigated data, the
kinetic thermal decomposition process was best described by R1 and D4 model for
all temperatures to EFV and 3TC, respectively. The residual error adjustment
over the network is on average 10$^{3}$ times lower for EFV and 10$^{2}$ times
lower for 3TC compared to the best individual kinetic model that describes the
process. These improvements in physical adjustment allow detailed study of the
process and therefore a more accurate calculation of the kinetic parameters
such as the activation energy and frequency factor. It was found Ea=75.230
kJ/mol and ln(A)=3.2190x10$^{-16}$ s$^{-1}$ for EFV and Ea=103.25 kJ/mol and
ln(A)= 2.5587X10$^{3}$ s$^{-1}$ for 3TC.


title: Minuscule weights and Chevalley groups

abstract:
  The traditional construction of Chevalley groups relies on the choice of
certain signs for a Chevalley basis of the underlying Lie
algebra~$\mathfrak{g}$. Recently, Lusztig simplified this construction for
groups of adjoint type by using the "canonical basis" of the adjoint
representation of~$\mathfrak{g}$, in particular, no choices of signs are
required. The purpose of this note is to extend this to Chevalley groups which
are not necessarily of adjoint type, using Jantzen's explicit models of the
minuscule highest weight representations of~$\mathfrak{g}$.