title:
Singular Hermitian metrics and positivity of direct images of
  pluricanonical bundles

abstract:
  This is an expository article. In the first part we recall the definition and
a few results concerning singular Hermitian metrics on torsion-free coherent
sheaves. They offer the perfect platform for the study of properties of direct
images of twisted pluricanonical bundles which we will survey in the second
part.


title:
Polynomial Analysis Algorithms for Free Choice Probabilistic Workflow
  Nets

abstract:
  We study Probabilistic Workflow Nets (PWNs), a model extending van der
Aalst's workflow nets with probabilities. We give a semantics for PWNs in terms
of Markov Decision Processes and introduce a reward model. Using a result by
Varacca and Nielsen, we show that the expected reward of a complete execution
of the PWN is independent of the scheduler. Extending previous work on
reduction of non-probabilistic workflow nets, we present reduction rules that
preserve the expected reward. The rules lead to a polynomial-time algorithm in
the size of the PWN (not of the Markov decision process) for the computation of
the expected reward. In contrast, since the Markov decision process of PWN can
be exponentially larger than the PWN itself, all algorithms based on
constructing the Markov decision process require exponential time. We report on
a sample implementation and its performance on a collection of benchmarks.


title:
Large time monotonicity of solutions of reaction-diffusion equations in
  R^N

abstract:
  In this paper, we consider nonnegative solutions of spatially heterogeneous
Fisher-KPP type reaction-diffusion equations in the whole space. Under some
assumptions on the initial conditions, including in particular the case of
compactly supported initial conditions, we show that, above any arbitrary
positive value, the solution is increasing in time at large times. Furthermore,
in the one-dimensional case, we prove that, if the equation is homogeneous
outside a bounded interval and the reaction is linear around the zero state,
then the solution is time-increasing in the whole line at large times. The
question of the monotonicity in time is motivated by a medical imagery issue.


title:
The formation conditions of enstatite chondrites: Insights from trace
  element geochemistry of olivine-bearing chondrules in Sahara 97096 (EH3)

abstract:
  We report in situ LA-ICP-MS trace element analyses of silicate phases in
olivine-bearing chondrules in the Sahara 97096 (EH3) enstatite chondrite. Most
olivine and enstatite present rare earth element (REE) patterns comparable to
their counterparts in type I chondrules in ordinary chondrites. They thus
likely share a similar igneous origin, likely under similar redox conditions.
The mesostasis however frequently shows negative Eu and/or Yb (and more rarely
Sm) anomalies, evidently out of equilibrium with olivine and enstatite. We
suggest that this reflects crystallization of oldhamite during a sulfidation
event, already inferred by others, during which the mesostasis was molten,
where the complementary positive Eu and Yb anomalies exhibited by oldhamite
would have possibly arisen due to a divalent state of these elements. Much of
this igneous oldhamite would have been expelled from the chondrules, presumably
by inertial acceleration or surface tension effects, and would have contributed
to the high abundance of opaque nodules found outside them in EH chondrites. In
two chondrules, olivine and enstatite exhibit negatively sloped REE patterns,
which may be an extreme manifestation of a general phenomenon (possibly linked
to near-liquidus partitioning) underlying the overabundance of light REE
observed in most chondrule silicates relative to equilibrium predictions. The
silicate phases in one of these two chondrules show complementary Eu, Yb and Sm
anomalies providing direct evidence for the postulated occurrence of the
divalent state for these elements at some stage in the formation reservoir of
enstatite chondrites. Our work supports the idea that the peculiarities of
enstatite chondrites may not require a condensation sequence at high C/O ratios
as has long been believed.


title:
Enhanced optical squeezing from a degenerate parametric amplifier via
  time-delayed coherent feedback

abstract:
  A particularly simple setup is introduced to study the influence of
time-delayed coherent feedback on the optical squeezing properties of the
degenerate parametric amplifier (DPA). The possibility for significantly
enhanced squeezing is demonstrated both on resonance and in sidebands, at a
reduced pump power compared to the case without feedback. We study a broad
range of operating parameters and their influence on the characteristic
squeezing of the system. A classical analysis of the system dynamics reveals
the connection between the feedback-modified landscape of stability and
enhanced squeezing.


title:
Exact partition functions for the $\Omega$-deformed $\mathcal N=2^{*}$
  $SU(2)$ gauge theory

abstract:
  We study the low energy effective action of the $\Omega$-deformed $\mathcal N
=2^{*}$ $SU(2) $ gauge theory. It depends on the deformation parameters
$\epsilon_{1},\epsilon_{2}$, the scalar field expectation value $a$, and the
hypermultiplet mass $m$. We explore the plane $(\frac{m}{\epsilon_{1}},
\frac{\epsilon_{2}}{\epsilon_{1}})$ looking for special features in the
multi-instanton contributions to the prepotential, motivated by what happens in
the Nekrasov-Shatashvili limit $\epsilon_{2}\to 0$. We propose a simple
condition on the structure of poles of the $k$-instanton prepotential and show
that it is admissible at a finite set of points in the above plane. At these
special points, the prepotential has poles at fixed positions independent on
the instanton number. Besides and remarkably, both the instanton partition
function and the full prepotential, including the perturbative contribution,
may be given in closed form as functions of the scalar expectation value $a$
and the modular parameter $q$ appearing in special combinations of Eisenstein
series and Dedekind $\eta$ function. As a byproduct, the modular anomaly
equation can be tested at all orders at these points. We discuss these special
features from the point of view of the AGT correspondence and provide explicit
toroidal 1-blocks in non-trivial closed form. The full list of solutions with
1, 2, 3, and 4 poles is determined and described in details.


title: Cosmology and Fundamental Physics with the Euclid Satellite

abstract:
  Euclid is a European Space Agency medium class mission selected for launch in
2020 within the Cosmic Vision 2015 2025 program. The main goal of Euclid is to
understand the origin of the accelerated expansion of the universe. Euclid will
explore the expansion history of the universe and the evolution of cosmic
structures by measuring shapes and redshifts of galaxies as well as the
distribution of clusters of galaxies over a large fraction of the sky. Although
the main driver for Euclid is the nature of dark energy, Euclid science covers
a vast range of topics, from cosmology to galaxy evolution to planetary
research. In this review we focus on cosmology and fundamental physics, with a
strong emphasis on science beyond the current standard models. We discuss five
broad topics: dark energy and modified gravity, dark matter, initial
conditions, basic assumptions and questions of methodology in the data
analysis. This review has been planned and carried out within Euclid's Theory
Working Group and is meant to provide a guide to the scientific themes that
will underlie the activity of the group during the preparation of the Euclid
mission.


title:
The formation of well-defined crystalline structures by UV laser
  irradiation of amorphous silicon films

abstract:
  This study provides a new insight into the processes which occur when thin
film hydrogenated amorphous silicon is subjected to UV laser irradiation in the
presence of oxygen. It achieves this by observing the effects of subjecting the
films to progressively increasing laser radiation doses. This reveals that an
array of nuclei is first created, leading to the formation of a well-defined
crystalline network, consistent with the structure of silicon oxide. Further
irradiation results in the formation of cone-like structures on the crystalline
network, due to silicon-oxygen bond breakage and migration of the resultant
silicon-rich material. Eventually the cone-like structures become the dominant
features, but remain interconnected by nanowire remnants of the original
crystalline structure.


title: On the Troll-Trust Model for Edge Sign Prediction in Social Networks

abstract:
  In the problem of edge sign prediction, we are given a directed graph
(representing a social network), and our task is to predict the binary labels
of the edges (i.e., the positive or negative nature of the social
relationships). Many successful heuristics for this problem are based on the
troll-trust features, estimating at each node the fraction of outgoing and
incoming positive/negative edges. We show that these heuristics can be
understood, and rigorously analyzed, as approximators to the Bayes optimal
classifier for a simple probabilistic model of the edge labels. We then show
that the maximum likelihood estimator for this model approximately corresponds
to the predictions of a Label Propagation algorithm run on a transformed
version of the original social graph. Extensive experiments on a number of
real-world datasets show that this algorithm is competitive against
state-of-the-art classifiers in terms of both accuracy and scalability.
Finally, we show that troll-trust features can also be used to derive online
learning algorithms which have theoretical guarantees even when edges are
adversarially labeled.


title: The classification of 3-dimensional noetherian cubic Calabi-Yau algebras

abstract:
  It is known that every 3-dimensional noetherian Calabi-Yau algebra generated
in degree 1 is isomorphic to a Jacobian algebra of a superpotential. Recently,
S. P. Smith and the first author classified all superpotentials whose Jacobian
algebras are 3-dimensional noetherian quadratic Calabi-Yau algebras. The main
result of this paper is to classify all superpotentials whose Jacobian algebras
are 3-dimensional noetherian cubic Calabi-Yau algebras. As an application, we
show that if $S$ is a 3-dimensional noetherian cubic Calabi-Yau algebra and
$\sigma$ is a graded algebra automorphism of $S$, then the homological
determinant of $\sigma$ can be calculated by the formula $\operatorname{hdet}
\sigma=(\operatorname{det} \sigma)^2$ with one exception.


title:
The Most Bound Halo Particle-Galaxy Correspondence Model: Comparison
  between Models with Different Merger Timescales

abstract:
  We develop a galaxy assignment scheme that populates dark matter halos with
galaxies by tracing the most bound member particles (MBPs) of simulated halos.
Several merger-timescale models based on analytic calculations and numerical
simulations are adopted as the survival time of mock satellite galaxies. We
build mock galaxy samples from halo merger data of the Horizon Run 4 $N$-body
simulation from $z = 12-0$. We compare group properties and two-point
correlation functions (2pCFs) of mock galaxies with those of volume-limited
SDSS galaxies, with $r$-band absolute magnitudes of $\mathcal{M}_r - 5 \log h <
-21$ and $-20$ at $z=0$. It is found that the MBP-galaxy correspondence scheme
reproduces the observed population of SDSS galaxies in massive galaxy groups
($M > 10^{14} h^{-1} M_{\odot}$) and the small-scale 2pCF ($r_{\rm p} < 10
h^{-1} {\rm Mpc}$) quite well for the majority of the merger timescale models
adopted. The new scheme outperforms the previous subhalo-galaxy correspondence
scheme by more than $2\sigma$.


title: A Survey on Learning to Hash

abstract:
  Nearest neighbor search is a problem of finding the data points from the
database such that the distances from them to the query point are the smallest.
Learning to hash is one of the major solutions to this problem and has been
widely studied recently. In this paper, we present a comprehensive survey of
the learning to hash algorithms, categorize them according to the manners of
preserving the similarities into: pairwise similarity preserving, multiwise
similarity preserving, implicit similarity preserving, as well as quantization,
and discuss their relations. We separate quantization from pairwise similarity
preserving as the objective function is very different though quantization, as
we show, can be derived from preserving the pairwise similarities. In addition,
we present the evaluation protocols, and the general performance analysis, and
point out that the quantization algorithms perform superiorly in terms of
search accuracy, search time cost, and space cost. Finally, we introduce a few
emerging topics.


title:
The Internal Polya Inequality for $\mathbb{C}$-convex Domains in
  $\mathbb{C}^n$

abstract:
  Let $K\subset \mathbb{C}$ be a polynomially convex compact set, $f$ be a
function analytic in a domain $\overline{\mathbb{C}}\smallsetminus K$ with
Taylor expansion $f\left( z\right) =\sum_{k=0}^{\infty }\frac{a_{k}}{z^{k+1}} $
at $\infty $, and $H_{s}\left( f\right) :=\det \left( a_{k+l}\right)
_{k,l=0}^{s}$ related Hankel determinants. The classical Polya theorem \cite%
{P} says that \[ \limsup_{s\rightarrow \infty }\left\vert H_{s}\left( f\right)
\right\vert ^{1/s^{2}}\leq d\left( K\right) , \]% where $d\left( K\right) $ is
the transfinite diameter of $K$. The main result of this paper is multivariate
internal analogs of Polya's inequality for $\mathbb{C}$-convex (=strictly
linearly convex) domains $D\subset \mathbb{C}^{n}$ and weighted Hankel-type
determinants, constructed from the Taylor coefficients of a function $f\in
A\left( D\right) $ at a given point $% a\in D$; therewith the weights are
generated by $s$-indicatrices of the sequence of analytic functionals
biorthogonal to the system of monomials in $% \mathbb{C}^{n}$. It is proved by
the reduction to the outer multivariate analog of Polya's inequality
(Zakharyuta, Math. USSR Sbornik, \textbf{25 }% (1975)) and is based on the
characterization of the strict linear convexity in terms of $s$-indicatrices
(S. Znamenskii, Siberian Math. J. \textbf{26 } (1985)).


title: Robust Principal Component Analysis in Hilbert spaces

abstract:
  We propose a stable version of Principal Component Analysis (PCA) in the
general framework of a separable Hilbert space. It consists in interpreting the
projection on the first eigenvectors as a step function applied to the spectrum
of the covariance operator and in replacing it with a smooth cut-off of the
eigenvalues. We study the problem from a statistical point of view, so that we
assume that we do not have direct access to the covariance operator but we have
to estimate it from an i.i.d. sample. We provide some results on the quality of
the approximation of our spectral cut-off in terms of the quality of the
approximation of the eigenvalues of the covariance operator.


title:
Strongly correlated Fermi superfluid near an orbital Feshbach resonance:
  Stability, equation of state and Leggett mode

abstract:
  We theoretically study the superfluid phase of a strongly correlated
$^{173}$Yb Fermi gas near its orbital Feshbach resonance, by developing a
quantitative pair-fluctuation theory within a two-band model. We examine the
density excitation spectrum of the system and determine a stability phase
diagram. We find that the $^{173}$Yb Fermi gas is intrinsically metastable and
has a peculiar equation of state, due to the small but positive singlet
scattering length. The massive Leggett mode, arising from the fluctuation of
the relative phase of two order parameters, is severely damped. We discuss the
parameter space where an undamped Leggett mode may exist.


title: Neural Network Translation Models for Grammatical Error Correction

abstract:
  Phrase-based statistical machine translation (SMT) systems have previously
been used for the task of grammatical error correction (GEC) to achieve
state-of-the-art accuracy. The superiority of SMT systems comes from their
ability to learn text transformations from erroneous to corrected text, without
explicitly modeling error types. However, phrase-based SMT systems suffer from
limitations of discrete word representation, linear mapping, and lack of global
context. In this paper, we address these limitations by using two different yet
complementary neural network models, namely a neural network global lexicon
model and a neural network joint model. These neural networks can generalize
better by using continuous space representation of words and learn non-linear
mappings. Moreover, they can leverage contextual information from the source
sentence more effectively. By adding these two components, we achieve
statistically significant improvement in accuracy for grammatical error
correction over a state-of-the-art GEC system.


title: The Development of Elementary Quantum Theory from 1900 to 1927

abstract:
  Planck's introduction of the quantum of action in 1900 was followed by 25
years of trial and error in quest of the understanding of the quantum world;
different ideas and directions had to be pursued until the path leading to the
elementary quantum theory was discovered. Radical changes away from traditional
perceptions about natural phenomena were necessary, the entire system of basic
concepts in classical physics had to be abandoned and replaced by a new mode of
thought. Continuity and determinism of classical laws were no longer applicable
on the quantum scale, where dynamical behaviour proceeds by discontinuous and
statistical quantum transitions. Albert Einstein laid the essential foundations
for the new concept; Max Born made the decisive step further leading to the
breakthrough in 1925. The development of the ideas, which eventually resulted
in the elementary quantum theory in 1925/26, will be described, relying on
original publications and letters written during that period in time by the
major contributors. The fundamental laws of Quantum Theory derived by Max Born
and Pascual Jordan may mathematically be represented in many different ways,
and particular emphasis is given to the distinction between physical content
and mathematical representation.


title:
A Survey of Anticipatory Mobile Networking: Context-Based
  Classification, Prediction Methodologies, and Optimization Techniques

abstract:
  A growing trend for information technology is to not just react to changes,
but anticipate them as much as possible. This paradigm made modern solutions,
such as recommendation systems, a ubiquitous presence in today's digital
transactions. Anticipatory networking extends the idea to communication
technologies by studying patterns and periodicity in human behavior and network
dynamics to optimize network performance. This survey collects and analyzes
recent papers leveraging context information to forecast the evolution of
network conditions and, in turn, to improve network performance. In particular,
we identify the main prediction and optimization tools adopted in this body of
work and link them with objectives and constraints of the typical applications
and scenarios. Finally, we consider open challenges and research directions to
make anticipatory networking part of next generation networks.


title: Reheating the Standard Model from a hidden sector

abstract:
  We consider a scenario where the inflaton decays to a hidden sector thermally
decoupled from the visible Standard Model sector. A tiny portal coupling
between the hidden and the visible sectors later heats the visible sector so
that the Standard Model degrees of freedom come to dominate the energy density
of the Universe before Big Bang Nucleosynthesis. We find that this scenario is
viable, although obtaining the correct dark matter abundance and retaining
successful Big Bang Nucleosynthesis is not obvious. We also show that the
isocurvature perturbations constituted by a primordial Higgs condensate are not
problematic for the viability of the scenario.


title:
Not dead, just resting: The practical value of per publication citation
  indicators

abstract:
  In the final analysis citation-based indicators are inferior to effective
peer review and even peer review is flawed. It is impossible to accurately
measure the value or impact of scientific research and a key task of
scientometricians should be to produce figures for policy makers and others
that are as informative as it is practical to make them and to ensure that
users are fully aware of their limitations. Although the Abramo and D'Angelo
(2016) suggestions make a lot of theoretical sense and so are a goal that is
worth aiming for, it is unrealistic in practice to advocate their universal use
in the contexts discussed above. This is because the indicators would still
have flaws in addition to the generic limitations of citation-based indicators
and would still be inadequate for replacing peer review. Thus, the expense of
the data gathering does not always justify the value in practice of the extra
accuracy. In the longer term, the restructuring of education needed in order to
get the homogeneity necessary for genuinely comparable statistics would be too
expensive and probably damaging to the research mission, in addition to being
out of proportion to the likely value of any citation-based indicator.


title: Discovery of hard phase lags in the pulsed emission of GRO J1744-28

abstract:
  We report on the discovery and energy dependence of hard phase lags in the
2.14 Hz pulsed profiles of GRO J1744-28. We used data from XMM-Newton and
NuSTAR. We were able to well constrain the lag spectrum with respect to the
softest (0.3--2.3 keV) band: the delay shows increasing lag values reaching a
maximum delay of $\sim$ 12 ms, between 6 and 6.4 keV. After this maximum, the
value of the hard lag drops to 7 ms, followed by a recovery to a plateau at 9
ms for energies above 8 keV. NuSTAR data confirm this trend up to 30 keV, but
the measurements are statistically poorer, and therefore, less constraining.
The lag-energy pattern up to the discontinuity is well described by a
logarithmic function. Assuming this is due to a Compton reverberation
mechanism, we derive a size for the Compton cloud $R_{\rm{cc}}$ $\sim$ 120
$R_{\rm g}$, consistent with previous estimates on the magnetospheric radius.
In this scenario, the sharp discontinuity at $\sim$ 6.5 keV appears difficult
to interpret and suggests the possible influence of the reflected component in
this energy range. We therefore propose the possible coexistence of both
Compton and disk reverberation to explain the scale of the lags and its energy
dependence.


title: Self-stabilizing Reconfiguration

abstract:
  Current reconfiguration techniques are based on starting the system in a
consistent configuration, in which all participating entities are in their
initial state. Starting from that state, the system must preserve consistency
as long as a predefined churn rate of processors joins and leaves is not
violated, and unbounded storage is available. Many working systems cannot
control this churn rate and do not have access to unbounded storage. System
designers that neglect the outcome of violating the above assumptions may doom
the system to exhibit illegal behaviors. We present the first automatically
recovering reconfiguration scheme that recovers from transient faults, such as
temporal violations of the above assumptions. Our self-stabilizing solutions
regain safety automatically by assuming temporal access to reliable failure
detectors. Once safety is re-established, the failure detector reliability is
no longer needed. Still, liveness is conditioned by the failure detector's
unreliable signals. We show that our self-stabilizing reconfiguration
techniques can serve as the basis for the implementation of several dynamic
services over message passing systems. Examples include self-stabilizing
reconfigurable virtual synchrony, which, in turn, can be used for implementing
a self-stabilizing reconfigurable state-machine replication and
self-stabilizing reconfigurable emulation of shared memory.


title:
Trust-free verification of steering: why you can't cheat a quantum
  referee

abstract:
  It was believed until recently that the verification of quantum entanglement
and quantum steering, between two parties, required trust in at least one of
the parties and their devices, in contrast to the verification of Bell
nonseparability. It has since been shown that this is not the case: the need
for trust, in verifying two parties share a given quantum correlation resource,
can be replaced by quantum refereeing, in which the referee sends quantum
signals rather than classical signals to untrusted parties. The existence of
such quantum-refereed games is discussed, with particular emphasis on how they
make it impossible for the parties to cheat. The example of a particular
quantum-refereed steering game is used to show explicitly how
measurement-device independence is achieved via `quantum programming' of
untrusted measurement devices; how cheating is prevented by the steered party
being unable to distinguish sufficiently well between two sets of nonorthogonal
signal states; and that cheating remains impossible when one-way communication
is allowed from the steered party to the unsteered party. This game has been
recently implemented experimentally, and is of particular interest both in
accounting for any imperfections in the referee's preparation of signal states,
and in suggesting the future possibility of secure two-sided quantum key
distribution with Bell-local states.


title:
Collective transport of charges in charge density wave systems based on
  traveling soliton lattices

abstract:
  Solitons are peculiar excitations that appear in a wide range of nonlinear
systems such as in fluids or optics. We show here that the collective transport
of charges observed in charge density wave (CDW) systems can be explained by
using a similar theory based on a traveling soliton lattice. Coherent x-ray
diffraction experiment performed in the sliding state of a CDW material reveals
peculiar diffraction patterns in good agreement with this assumption.
Therefore, the collective transport of charges in CDW systems may be due to a
nonlinear interaction leading to a self-localized excitation, carrying charges
without deformation through the sample, on top of the CDW ground state. This
single theory explains why charges remain spatially correlated over very long
distances and reconciles the main features of sliding CDW systems, either
observed by transport measurements or diffraction.


title:
High-precision broad-band linear polarimetry of early-type binaries I.
  Discovery of variable, phase-locked polarization in HD 48099

abstract:
  We investigate the structure of the O-type binary system HD 48099 by
measuring linear polarization that arises due to light scattering process.
  Linear polarization measurements of HD 48099 in the B, V and R passbands with
the high-precision Dipol-2 polarimeter have been carried out. The data have
been obtained with the 60 cm KVA (Observatory Roque de los Muchachos, La Palma,
Spain) and T60 (Haleakala, Hawaii, USA) remotely controlled telescopes during
31 observing nights. Polarimetry in the optical wavelengths has been
complemented by observations in the X-rays with the SWIFT space observatory.
  Optical polarimetry revealed small intrinsic polarization in HD 48099 with
0.1% peak to peak variation over the orbital period of 3.08 days. The
variability pattern is typical for binary systems, showing strong second
harmonic of the orbital period. We apply our model code for the electron
scattering in the circumstellar matter to put constraints on the system
geometry. A good model fit is obtained for scattering of light on a cloud
produced by the colliding stellar winds. The geometry of the cloud, with a
broad distribution of scattering particles away from the orbital plane, helps
in constraining the (low) orbital inclination. We derive from the polarization
data the inclination i = 17 deg +/- 2deg and the longitude of the ascending
node Omega = 82 deg +/- 1 deg of the binary orbit. The available X-ray data
provide additional evidence for the existence of the colliding stellar winds in
the system. Another possible source of the polarized light could be scattering
from the stellar photospheres. The models with circumstellar envelopes, or
matter confined to the orbital plane, do not provide good constraints on the
low inclination, better than i < 27 deg, as is already suggested by the absence
of eclipses.


title: Matroid Filtrations and Computational Persistent Homology

abstract:
  This technical report introduces a novel approach to efficient computation in
homological algebra over fields, with particular emphasis on computing the
persistent homology of a filtered topological cell complex. The algorithms here
presented rely on a novel relationship between discrete Morse theory, matroid
theory, and classical matrix factorizations. We provide background, detail the
algorithms, and benchmark the software implementation in the Eirene package.


title: A Fast Order-Based Approach for Core Maintenance

abstract:
  Graphs have been widely used in many applications such as social networks,
collaboration networks, and biological networks. One important graph analytics
is to explore cohesive subgraphs in a large graph. Among several cohesive
subgraphs studied, k-core is one that can be computed in linear time for a
static graph. Since graphs are evolving in real applications, in this paper, we
study core maintenance which is to reduce the computational cost to compute
k-cores for a graph when graphs are updated from time to time dynamically. We
identify drawbacks of the existing efficient algorithm, which needs a large
search space to find the vertices that need to be updated, and has high
overhead to maintain the index built, when a graph is updated. We propose a new
order-based approach to maintain an order, called k-order, among vertices,
while a graph is updated. Our new algorithm can significantly outperform the
state-of-the-art algorithm up to 3 orders of magnitude for the 11 large real
graphs tested. We report our findings in this paper.


title: Coulomb dissociation of $^{20,21}$N

abstract:
  Neutron-rich light nuclei and their reactions play an important role for the
creation of chemical elements. Here, data from a Coulomb dissociation
experiment on $^{20,21}$N are reported. Relativistic $^{20,21}$N ions impinged
on a lead target and the Coulomb dissociation cross section was determined in a
kinematically complete experiment. Using the detailed balance theorem, the
$^{19}\mathrm{N}(\mathrm{n},\gamma)^{20}\mathrm{N}$ and
$^{20}\mathrm{N}(\mathrm{n},\gamma)^{21}\mathrm{N}$ excitation functions and
thermonuclear reaction rates have been determined. The
$^{19}\mathrm{N}(\mathrm{n},\gamma)^{20}\mathrm{N}$ rate is up to a factor of 5
higher at $T<1$\,GK with respect to previous theoretical calculations, leading
to a 10\,\% decrease in the predicted fluorine abundance.


title: OWL: a Reliable Online Watcher for LTE Control Channel Measurements

abstract:
  Reliable network measurements are a fundamental component of networking
research as they enable network analysis, system debugging, performance
evaluation and optimization. In particular, decoding the LTE control channel
would give access to the full base station traffic at a 1 ms granularity, thus
allowing for traffic profiling and accurate measurements. Although a few
open-source implementations of LTE are available, they do not provide tools to
reliably decoding the LTE control channel and, thus, accessing the scheduling
information. In this paper, we present OWL, an Online Watcher for LTE that is
able to decode all the resource blocks in more than 99% of the system frames,
significantly outperforming existing non-commercial prior decoders. Compared to
previous attempts, OWL grounds the decoding procedure on information obtained
from the LTE random access mechanism. This makes it possible to run our
software on inexpensive hardware coupled with almost any software defined radio
capable of sampling the LTE signal with sufficient accuracy.


title:
A multi-objective synthesis methodology for majority/minority logic
  networks

abstract:
  New technologies such as Quantum-dot Cellular Automata (QCA), Single Electron
Tunneling (SET), Tunneling Phase Logic (TPL) and all-spin logic (ASL) devices
have been widely advocated in nanotechnology as a response to the physical
limits associated with complementary metal oxide semiconductor (CMOS)
technology in atomic scales. Some of their peculiar features are their smaller
size, higher speed, higher switching frequency, lower power consumption, and
higher scale integration. In these technologies, the majority (or minority) and
inverter gates are employed for the production of the functions as this set of
gates makes a universal set of Boolean primitives in these technologies. An
important step in the generation of Boolean functions using the majority gate
is reducing the number of involved gates. In this paper, a multi-objective
synthesis methodology (with the objective priority of gate counts, gate levels
and the number of inverter gates) is presented for finding the minimal number
of possible majority gates in the synthesis of Boolean functions using the
proposed Majority Specification Matrix (MSM) concept. Moreover, based on MSM, a
synthesis flow is proposed for the synthesis of multi-output Boolean functions.
To reveal the efficiency of the proposed method, it is compared with a
meta-heuristic method, multi-objective Genetic Programing (GP). Besides, it is
applied to synthesize MCNC benchmark circuits. The results are indicative of
the outperformance of the proposed method in comparison to multi-objective GP
method. Also, for the MCNC benchmark circuits, there is an average reduction of
10.5% in the number of levels as well as 16.8% and 33.5% in the number of
majority and inverter gates, as compared to the best available method
respectively.


title:
Phonon-Plasmon Interaction in Metal-Insulator-Metal Localized Surface
  Plasmon Systems

abstract:
  We investigate theoretically and numerically the coupling between elastic and
localized surface plasmon modes in a system of gold nanocylinders separated
from a thin gold film by a dielectric spacer of few nanometers thickness. That
system supports plasmon modes confined in between the bottom of the
nanocylinder and the top of the gold film, which arise from the formation of
interference patterns by short-wavelength metal-insulator-metal propagating
plasmon. First we present the plasmonic properties of the system though
computer-simulated extinction spectra and field maps associated to the
different optical modes. Next a simple analytical model is introduced, which
allows to correctly reproduce the shape and wavelengths of the plasmon modes.
This model is used to investigate the efficiency of the coupling between an
elastic deformation and the plasmonic modes. In the last part of the paper, we
present the full numerical simulations of the phononic properties of the
system, and then compute the acousto-plasmonic coupling between the different
plasmon modes and five acoustic modes of very different shape. The efficiency
of the coupling is assessed first by evaluating the modulation of the resonance
wavelength, which allows comparison with the analytical model, and finally in
term of time-modulation of the transmission spectra on the full visible range,
computed for realistic values of the deformation of the nanoparticle.


title: Ludvig Lorenz, Electromagnetism, and the Theory of Telephone Currents

abstract:
  Ludvig V. Lorenz (1829-1891) was Denmark's first theoretical physicist and
the only one whose work attracted international attention in the second half of
the nineteenth century. This paper presents a survey of Lorenz's contributions
to physics with an emphasis on his work in electrodynamics and electrical
science. His 1867 electrodynamic theory of light was of a theoretical and
foundational nature, while his unpublished theory of telephone currents was
oriented toward practical problems in long-distance telephony. Lorenz's
theories are briefly compared to those of better known physicists such as H. A.
Lorentz, J. C. Maxwell, and O. Heaviside.


title:
Production of high stellar-mass primordial black holes in trapped
  inflation

abstract:
  Trapped inflation has been proposed to provide a successful inflation with a
steep potential. We discuss the formation of primordial black holes in the
trapped inflationary scenario. We show that primordial black holes are
naturally produced during inflation with a steep trapping potential. In
particular, we have given a recipe for an inflaton potential with which
particle production can induce large non-Gaussian curvature perturbation that
leads to the formation of high stellar-mass primordial black holes. These
primordial black holes could be dark matter observed by the LIGO detectors
through a binary black-hole merger. At the end, we have given an attempt to
realize the required inflaton potential in the axion monodromy inflation, and
discussed the gravitational waves sourced by the particle production.


title: iResum: a new paradigm for resumming gravitational wave amplitudes

abstract:
  We introduce a new, resummed, analytical form of the post-Newtonian (PN),
factorized, multipolar amplitude corrections $f_{\ell m}$ of the
effective-one-body (EOB) gravitational waveform of spinning, nonprecessing,
circularized, coalescing black hole binaries (BBHs). This stems from the
following two-step paradigm: (i) the factorization of the orbital
(spin-independent) terms in $f_{\ell m}$; (ii) the resummation of the residual
spin (or orbital) factors. We find that resumming the residual spin factor by
taking its inverse resummed (iResum) is an efficient way to obtain amplitudes
that are more accurate in the strong-field, fast-velocity regime. The
performance of the method is illustrated on the $\ell=2$ and $m=(1,2)$ waveform
multipoles, both for a test-mass orbiting around a Kerr black hole and for
comparable-mass BBHs. In the first case, the iResum $f_{\ell m}$'s are much
closer to the corresponding "exact" functions (obtained solving numerically the
Teukolsky equation) up to the light-ring, than the nonresummed ones, especially
when the black-hole spin is nearly extremal. The iResum paradigm is also more
efficient than including higher post-Newtonian terms (up to 20PN order): the
resummed 5PN information yields per se a rather good numerical/analytical
agreement at the last-stable-orbit, and a well-controlled behavior up to the
light-ring. For comparable mass binaries (including the highest PN-order
information available, 3.5PN), comparing EOB with Numerical Relativity (NR)
data shows that the analytical/numerical fractional disagreement at merger,
without NR-calibration of the EOB waveform, is generically reduced by iResum,
from a $40\%$ of the usual approach to just a few percents. This suggests that
EOBNR waveform models for coalescing BBHs may be improved using iResum
amplitudes.


title:
Quantum gates and architecture for the quantum simulation of the
  Fermi-Hubbard model

abstract:
  Quantum computers are the ideal platform for quantum simulations. Given
enough coherent operations and qubits, such machines can be leveraged to
simulate strongly correlated materials, where intricate quantum effects give
rise to counter-intuitive macroscopic phenomena such as high-temperature
superconductivity. In this paper, we provide a gate decomposition and an
architecture for a quantum simulator used to simulate the Fermi-Hubbard model
in a hybrid variational quantum-classical algorithm. We propose a simple planar
implementation-independent layout of qubits that can also be used to simulate
more general fermionic systems. By working through a concrete application, we
show the gate decomposition used to simulate the Hamiltonian of a cluster of
the Fermi-Hubbard model. We briefly analyze the Trotter-Suzuki errors and
estimate the scaling properties of the algorithm for more complex applications.


title:
All-flavour Search for Neutrinos from Dark Matter Annihilations in the
  Milky Way with IceCube/DeepCore

abstract:
  We present the first IceCube search for a signal of dark matter annihilations
in the Milky Way using all-flavour neutrino-induced particle cascades. The
analysis focuses on the DeepCore sub-detector of IceCube, and uses the
surrounding IceCube strings as a veto region in order to select starting events
in the DeepCore volume. We use 329 live-days of data from IceCube operating in
its 86-string configuration during 2011-2012. No neutrino excess is found, the
final result being compatible with the background-only hypothesis. From this
null result, we derive upper limits on the velocity-averaged self-annihilation
cross-section, < \sigma_A v >, for dark matter candidate masses ranging from 30
GeV up to 10 TeV, assuming both a cuspy and a flat-cored dark matter halo
profile. For dark matter masses between 200 GeV and 10 TeV, the results improve
on all previous IceCube results on < \sigma_A v >, reaching a level of 10^{-23}
cm^3 s^-1, depending on the annihilation channel assumed, for a cusped NFW
profile. The analysis demonstrates that all-flavour searches are competitive
with muon channel searches despite the intrinsically worse angular resolution
of cascades compared to muon tracks in IceCube.


title:
Exploiting N-Best Hypotheses to Improve an SMT Approach to Grammatical
  Error Correction

abstract:
  Grammatical error correction (GEC) is the task of detecting and correcting
grammatical errors in texts written by second language learners. The
statistical machine translation (SMT) approach to GEC, in which sentences
written by second language learners are translated to grammatically correct
sentences, has achieved state-of-the-art accuracy. However, the SMT approach is
unable to utilize global context. In this paper, we propose a novel approach to
improve the accuracy of GEC, by exploiting the n-best hypotheses generated by
an SMT approach. Specifically, we build a classifier to score the edits in the
n-best hypotheses. The classifier can be used to select appropriate edits or
re-rank the n-best hypotheses. We apply these methods to a state-of-the-art GEC
system that uses the SMT approach. Our experiments show that our methods
achieve statistically significant improvements in accuracy over the best
published results on a benchmark test dataset on GEC.


title: Numerical matrix method for quantum periodic potentials

abstract:
  A numerical matrix methodology is applied to quantum problems with periodic
potentials. The procedure consists essentially in replacing the true potential
by an alternative one, restricted by an infinite square well, and in expressing
the wave functions as finite superpositions of eigenfunctions of the infinite
well. A matrix eigenvalue equation then yields the energy levels of the
periodic potential within an acceptable accuracy. The methodology has been
successfully used to deal with problems based on the well-known Kronig-Penney
(KP) model. Besides the original model, these problems are a dimerized KP
solid, a KP solid containing a surface, and a KP solid under an external field.
A short list of additional problems that can be solved with this procedure is
presented.


title: Bulk flow scaling for turbulent channel and pipe flows

abstract:
  We report a theory deriving bulk flow scaling for canonical wall-bounded
flows. The theory accounts for the symmetries of boundary geometry (flat plate
channel versus circular pipe) by a variational calculation for a large-scale
energy length, which characterizes its bulk flow scaling by a simple exponent,
i.e. $m=4$ for channel and 5 for pipe. The predicted mean velocity shows
excellent agreement with several dozen sets of quality empirical data for a
wide range of the Reynolds number (Re), with a universal bulk flow constant
$\kappa\approx0.45$. Predictions for dissipation and turbulent transport in the
bulk flow are also given, awaiting data verification.


title: Stirring by Periodic Arrays of Microswimmers

abstract:
  The interaction between swimming microorganisms or artificial self-propelled
colloids and passive (tracer) particles in a fluid leads to enhanced diffusion
of the tracers. This enhancement has attracted strong interest, as it could
lead to new strategies to tackle the difficult problem of mixing on a
microfluidic scale. Most of the theoretical work on this topic has focused on
hydrodynamic interactions between the tracers and swimmers in a bulk fluid.
However, in simulations, periodic boundary conditions (PBCs) are often imposed
on the sample and the fluid. Here, we theoretically analyze the effect of PBCs
on the hydrodynamic interactions between tracer particles and microswimmers. We
formulate an Ewald sum for the leading-order stresslet singularity produced by
a swimmer to probe the effect of PBCs on tracer trajectories. We find that
introducing periodicity into the system has a surprisingly significant effect,
even for relatively small swimmer-tracer separations. We also find that the
bulk limit is only reached for very large system sizes, which are challenging
to simulate with most hydrodynamic solvers.


title: Nonlinear Spinor field in isotropic space-time and dark energy models

abstract:
  Within the scope of isotropic FRW cosmological model the role of nonlinear
spinor field in the evolution of the Universe is studied. It is found that
unlike in anisotropic cosmological models in the present case the spinor field
does not possess nontrivial non-diagonal components of energy-momentum tensor,
consequently does not impose any additional restrictions on the components of
the spinor field or metric function. The spinor description of different matter
was given and evolution of the Universe corresponding to these sources is
illustrated. In the framework of a three fluid system the utility of spinor
description of matter is established.


title:
PGMPI: Automatically Verifying Self-Consistent MPI Performance
  Guidelines

abstract:
  The Message Passing Interface (MPI) is the most commonly used application
programming interface for process communication on current large-scale parallel
systems. Due to the scale and complexity of modern parallel architectures, it
is becoming increasingly difficult to optimize MPI libraries, as many factors
can influence the communication performance. To assist MPI developers and
users, we propose an automatic way to check whether MPI libraries respect
self-consistent performance guidelines for collective communication operations.
We introduce the PGMPI framework to detect violations of performance guidelines
through benchmarking. Our experimental results show that PGMPI can pinpoint
undesired and often unexpected performance degradations of collective MPI
operations. We demonstrate how to overcome performance issues of several
libraries by adapting the algorithmic implementations of their respective
collective MPI calls.


title:
Coherence, subgroup separability, and metacyclic structures for a class
  of cyclically presented groups

abstract:
  We study a class $\mathfrak{M}$ of cyclically presented groups that includes
both finite and infinite groups and is defined by a certain combinatorial
condition on the defining relations. This class includes many finite metacyclic
generalized Fibonacci groups that have been previously identified in the
literature. By analysing their shift extensions we show that the groups in the
class $\mathfrak{M}$ are are coherent, subgroup separable, satisfy the Tits
alternative, possess finite index subgroups of geometric dimension at most two,
and that their finite subgroups are all metacyclic. Many of the groups in
$\mathfrak{M}$ are virtually free, some are free products of metacyclic groups
and free groups, and some have geometric dimension two. We classify the finite
groups that occur in $\mathfrak{M}$, giving extensive details about the
metacyclic structures that occur, and we use this to prove an earlier
conjecture concerning cyclically presented groups in which the relators are
positive words of length three. We show that any finite group in the class
$\mathfrak{M}$ that has fixed point free shift automorphism must be cyclic.


title: Leibniz triple systems admitting a multiplicative basis

abstract:
  Let $(T,\langle \cdot, \cdot, \cdot \rangle)$ be a Leibniz triple system of
arbitrary dimension, over an arbitrary base field ${\mathbb F}$. A basis
${\mathcal B} = \{e_{i}\}_{i \in I}$ of $T$ is called multiplicative if for any
$i,j,k \in I$ we have that $\langle e_i,e_j,e_k\rangle\in {\mathbb F}e_r$ for
some $r \in I$. We show that if $T$ admits a multiplicative basis then it
decomposes as the orthogonal direct sum $T= \bigoplus_k{\mathfrak I}_k$ of
well-described ideals ${\mathfrak I}_k$ admitting each one a multiplicative
basis. Also the minimality of $T$ is characterized in terms of the
multiplicative basis and it is shown that, under a mild condition, the above
direct sum is by means of the family of its minimal ideals.


title:
Competition between Spin Echo and Spin Self-Rephasing in a Trapped Atom
  Interferometer

abstract:
  We perform Ramsey interferometry on an ultracold 87Rb ensemble confined in an
optical dipoletrap. We use a \pi-pulse set at the middle of the interferometer
to restore the coherence of the spinensemble by canceling out phase
inhomogeneities and creating a spin echo in the contrast. However,for high
atomic densities, we observe the opposite behavior: the \pi-pulse accelerates
the dephasingof the spin ensemble leading to a faster contrast decay of the
interferometer. We understand thisphenomenon as a competition between the
spin-echo technique and an exchange-interaction drivenspin self-rephasing
mechanism based on the identical spin rotation effect. Our experimental data
iswell reproduced by a numerical model.


title: Hyperspectral Subspace Identification Using SURE

abstract:
  Remote sensing hyperspectral sensors collect large volumes of high
dimensional spectral and spatial data. However, due to spectral and spatial
redundancy the true hyperspectral signal lies on a subspace of much lower
dimension than the original data. The identification of the signal subspace is
a very important first step for most hyperspectral algorithms. In this paper we
investigate the important problem of identifying the hyperspectral signal
subspace by minimizing the mean squared error (MSE) between the true signal and
an estimate of the signal. Since the MSE is uncomputable in practice, due to
its dependency on the true signal, we propose a method based on the Stein's
unbiased risk estimator (SURE) that provides an unbiased estimate of the MSE.
The resulting method is simple and fully automatic and we evaluate it using
both simulated and real hyperspectral data sets. Experimental results shows
that our proposed method compares well to recent state-of-the-art subspace
identification methods.


title:
Theory of Orbital Susceptibility in the Tight-Binding Model: Corrections
  to the Peierls Phase

abstract:
  An extended formula for orbital susceptibility including corrections of the
Peierls phase is introduced. By using the new developed formula, the orbital
susceptibility of benzene is estimated analytically on the basis of the $\pi$
electron approximation. As a result, it is found that the orbital
susceptibility is 1.2 times larger than that estimated only from the Peierls
phase. The Coulomb interaction dependence of the orbital susceptibility of
benzene is also discussed by using exact diagonalization. It is found that the
absolute value of the orbital susceptibility decreases as the Coulomb
interaction increases, while the ratio of the orbital susceptibility with and
without the corrections of the Peierls phase increases. Finally, we discuss the
orbital susceptibility of a single-band tight-binding model on a square
lattice. We clarify that the correction of the Peierls phase is comparable to
the Landau--Peierls orbital susceptibility and that it corresponds to the Fermi
sea term.


title: Diameter two properties, convexity and smoothness

abstract:
  We study smoothness and strict convexity of (the bidual) of Banach spaces in
the presence of diameter 2 properties. We prove that the strong diameter 2
property prevents the bidual from being strictly convex and being smooth, and
we initiate the investigation whether the same is true for the (local) diameter
2 property. We also give characterizations of the following property for a
Banach space $X$: "For every slice $S$ of $B_X$ and every norm-one element $x$
in $S$, there is a point $y\in S$ in distance as close to 2 as we want." Spaces
with this property are shown to have non-smooth bidual.


title:
Iterates of systems of operators in spaces of
  $\omega$-ultradifferentiable functions

abstract:
  Given two systems $P=(P_j(D))_{j=1}^N$ and $Q=(Q_j(D))_{j=1}^M$ of linear
partial differential operators with constant coefficients, we consider the
spaces ${\mathcal E}_\omega^P$ and ${\mathcal E}_\omega^Q$ of
$\omega$-ultradifferentiable functions with respect to the iterates of the
systems $P$ and $Q$ respectively. We find necessary and sufficient conditions,
on the systems and on the weights $\omega(t)$ and $\sigma(t)$, for the
inclusion ${\mathcal E}_\omega^P\subseteq{\mathcal E}_\sigma^Q$. As a
consequence we have a generalization of the classical Theorem of the Iterates.


title: Clustering of Self-Propelled Triangles with Surface Roughness

abstract:
  Self-propelled particles can spontaneously form dense phases from a dilute
suspension in a process referred to as motility-induced phase separation. The
properties of the out-of-equilibrium structures that are formed are governed by
the specifics of the particle interactions and the strength of the activity.
Thus far, most studies into the formation of these structures have focused on
spherical colloids, dumbbells, and rod-like particles endowed with various
interaction potentials. Only a few studies have examined the collective
behavior of more complex particle shapes. Here, we increase the geometric
complexity and use Molecular Dynamics simulations to consider the structures
formed by triangular self-propelled particles with surface roughness. These
triangles either move towards their apex or towards their base, i.e., they
possess a polarity. We find that apex-directed triangles cluster more readily,
more stably, and have a smoother cluster interface than their base-directed
counterparts. A difference between the two polarities is in line with the
results of [H.H. Wensink, et al., Phys. Rev. E 89, 010302(R) (2014)], however,
we obtain the reversed result when it comes to clustering, namely that
apex-directed particles cluster more readily. We further show that reducing the
surface roughness negatively impacts the stability of the base-directed
structures, suggesting that their formation is in large part due to surface
roughness. Our results lay a solid foundation for future experimental and
computational studies into the effect of roughness on the collective dynamics
of swimmers.


title:
How the site degree influences quantum probability on inhomogeneous
  substrates

abstract:
  We investigate the effect of the node degree and energy $E$ on the electronic
wave function for regular and irregular structures, namely, regular lattices,
disordered percolation clusters, and complex networks. We evaluate the
dependence of the quantum probability for each site on its degree. For
bi-regular structures, we prove analytically that the probability $P_k(E)$ of
finding the particle on any site with $k$ neighbors is independent of $E$. For
more general structures, the dependency of $P_k(E)$ on $E$ is discussed by
taking into account exact results on a one-dimensional semi-regular chain:
$P_k(E)$ is large for small values of $E$ when $k$ is also small, and its
maximum values shift towards large values of $|E|$ with increasing $k$.
Numerical evaluations of $P_k(E)$ for two different types of percolation
clusters and the Apollonian network suggest that this feature might be
generally valid


title: V4743 Sgr, a magnetic nova?

abstract:
  Two XMM Newton observations of Nova V4743 Sgr (Nova Sgr 2002) were performed
shortly after it returned to quiescence, 2 and 3.5 years after the explosion.
The X-ray light curves revealed a modulation with a frequency of ~0.75 mHz,
indicating that V4743 Sgr is most probably an intermediate polar (IP). The
X-ray spectra have characteristics in common with known IPs, with a hard
thermal plasma component that can be fitted only assuming a partially covering
absorber. In 2004 the X-ray spectrum had also a supersoft blackbody-like
component, whose temperature was close to that of the white dwarf (WD) in the
supersoft X-ray phase following the outburst, but with flux by at least two
orders of magnitude lower. In quiescent IPs, a soft X-ray flux component
originates at times in the polar regions irradiated by an accretion column, but
the supersoft component of V4743 Sgr disappeared in 2006, indicating a possible
origin different from accretion. We suggest that it may have been due to an
atmospheric temperature gradient on the WD surface, or to continuing localized
thermonuclear burning at the bottom of the envelope, before complete turn-off.
An optical spectrum obtained with SALT 11.5 years after the outburst showed a
prominent He II 4686A line and the Bowen blend, which reveal a very hot region,
but with peak temperature shifted to the ultraviolet (UV) range. V4743 Sgr is
the third post-outburst nova and IP candidate showing a low-luminosity
supersoft component in the X-ray flux a few years after the outburst.


title: A Minimax Optimal Algorithm for Crowdsourcing

abstract:
  We consider the problem of accurately estimating the reliability of workers
based on noisy labels they provide, which is a fundamental question in
crowdsourcing. We propose a novel lower bound on the minimax estimation error
which applies to any estimation procedure. We further propose Triangular
Estimation (TE), an algorithm for estimating the reliability of workers. TE has
low complexity, may be implemented in a streaming setting when labels are
provided by workers in real time, and does not rely on an iterative procedure.
We further prove that TE is minimax optimal and matches our lower bound. We
conclude by assessing the performance of TE and other state-of-the-art
algorithms on both synthetic and real-world data sets.


title: A deep ALMA image of the Hubble Ultra Deep Field

abstract:
  We present the results of the first, deep ALMA imaging covering the full 4.5
sq arcmin of the Hubble Ultra Deep Field (HUDF) as previously imaged with
WFC3/IR on HST. Using a mosaic of 45 pointings, we have obtained a homogeneous
1.3mm image of the HUDF, achieving an rms sensitivity of 35 microJy, at a
resolution of 0.7 arcsec. From an initial list of ~50 >3.5sigma peaks, a
rigorous analysis confirms 16 sources with flux densities S(1.3) > 120 microJy.
All of these have secure galaxy counterparts with robust redshifts (<z> =
2.15), and 12 are also detected at 6GHz in new deep JVLA imaging. Due to the
wealth of supporting data in this unique field, the physical properties of the
ALMA sources are well constrained, including their stellar masses (M*) and
UV+FIR star-formation rates (SFR). Our results show that stellar mass is the
best predictor of SFR in the high-z Universe; indeed at z > 2 our ALMA sample
contains 7 of the 9 galaxies in the HUDF with M* > 2 x 10^10 Msun and we detect
only one galaxy at z > 3.5, reflecting the rapid drop-off of high-mass galaxies
with increasing redshift. The detections, coupled with stacking, allow us to
probe the redshift/mass distribution of the 1.3-mm background down to S(1.3) ~
10 micro-Jy. We find strong evidence for a steep `main sequence' for
star-forming galaxies at z ~ 2, with SFR \propto M* and a mean specific SFR =
2.2 /Gyr. Moreover, we find that ~85% of total star formation at z ~ 2 is
enshrouded in dust, with ~65% of all star formation at this epoch occurring in
high-mass galaxies (M* > 2 x 10^10 Msun), for which the average
obscured:unobscured SF ratio is ~200. Finally, we combine our new ALMA results
with the existing HST data to revisit the cosmic evolution of star-formation
rate density; we find that this peaks at z ~ 2.5, and that the star-forming
Universe transits from primarily unobscured to primarily obscured thereafter at
z ~ 4.


title: How do signs organize in directed signed social networks?

abstract:
  We introduce a reshuffled approach to empirical analyze signs' organization
in real directed signed social networks of Epinions and Slashdots from the
global viewpoint. In the reshuffled approach, each negative link has
probability $p_{rs}$ to exchange its sign with another positive link chosen
randomly. Through calculating the entropies of social status ($S_{in}$ and
$S_{out}$) of and mimicking opinion formation of the majority-rule model on
each reshuffled signed network, we find that $S_{in}$ and $S_{out}$ reach their
own minimum values as well as the magnetization $|m^{*}|$ reaches its maximum
value at $p_{rs}=0$. Namely, individuals share the homogeneous properties of
social status and dynamic status in real directed signed social networks. Our
present work provides some interesting tools and perspective to understand the
signs' organization in signed social networks.


title: Uncertainty and filtering of hidden Markov models in discrete time

abstract:
  We consider the problem of filtering an unseen Markov chain from noisy
observations, in the presence of uncertainty regarding the parameters of the
processes involved. Using the theory of nonlinear expectations, we describe the
uncertainty in terms of a penalty function, which can be propagated forward in
time in the place of the filter.


title:
Dynamical Spectral rigidity among $\mathbb Z_2$-symmetric strictly
  convex domains close to a circle

abstract:
  We show that any sufficiently (finitely) smooth $\mathbb Z_2$-symmetric
strictly convex domain sufficiently close to a circle is dynamically spectrally
rigid, i.e. all deformations among domains in the same class which preserve the
length of all periodic orbits of the associated billiard flow must necessarily
be isometric deformations. This gives a partial answer to a question of P.
Sarnak.


title: Conductivity fluctuations in proton-implanted ZnO microwires

abstract:
  The electric noise can be an important limitation for applications of
conducting elements of size in the nanometer range. The intrinsic electrical
noise of prospective materials for opto-spintronics applications like ZnO has
not been characterized yet. In this study we have investigated the conductivity
fluctuations in 10~nm thick current paths produced by proton implantation of
ZnO microwires at room temperature. The voltage noise under a constant dc
current bias in undoped as well as in Li-doped microwires is characterized by
$1/f^a$ power spectra with $a \sim 1$. The noise intensity scales with the
square of the bias current pointing out to bias-independent resistivity
fluctuations as a source of the observed noise. The normalized power spectral
density appears inversely proportional to the number of carriers in the probed
sample volume, in agreement with the phenomenological Hooge law. For the
proton-implanted ZnO microwire and at 1~Hz we obtain a normalized power
spectral density as low as $\sim 10^{-11}~$Hz$^{-1}$.


title:
Can we use altmetrics at the institutional level? A case study analysing
  the coverage by research areas of four Spanish universities

abstract:
  Social media based indicators or altmetrics have been under scrutiny for the
last seven years. Their promise as alternative metrics for measuring scholarly
impact is still far from becoming a reality. Up to now, most studies have
focused on the understanding of the nature and relation of altmetric indicators
with citation data. Few papers have analysed research profiles based on
altmetric data. Most of these have related to researcher profiles and the
expansion of these tools among researchers. This paper aims at exploring the
coverage of the Altmetric.com database and its potential use in order to show
universities' research profiles in relationship with other databases. We
analyse a sample of four different Spanish universities.First, we observe a low
coverage of altmetric indicators with only 36 percent of all documents
retrieved from the Web of Science having an 'altmetric' score. Second, we
observe that for the four universities analysed, the area of Science shows
higher 'altmetric' scores that the rest of the research areas. Finally,
considering the low coverage of altmetric data at the institutional level, it
could be interesting for research policy makers to consider the development of
guidelines and best practices guides to ensure that researchers disseminate
adequately their research findings through social media.


title:
Jackknife resampling technique on mocks: an alternative method for
  covariance matrix estimation

abstract:
  We present a fast and robust alternative method to compute covariance matrix
in case of cosmology studies. Our method is based on the jackknife resampling
applied on simulation mock catalogues. Using a set of 600 BOSS DR11 mock
catalogues as a reference, we find that the jackknife technique gives a similar
galaxy clustering covariance matrix estimate by requiring a smaller number of
mocks. A comparison of convergence rates show that $\sim$7 times fewer
simulations are needed to get a similar accuracy on variance. We expect this
technique to be applied in any analysis where the number of available N-body
simulations is low.


title: Two-Way Visibly Pushdown Automata and Transducers

abstract:
  Automata-logic connections are pillars of the theory of regular languages.
Such connections are harder to obtain for transducers, but important results
have been obtained recently for word-to-word transformations, showing that the
three following models are equivalent: deterministic two-way transducers,
monadic second-order (MSO) transducers, and deterministic one-way automata
equipped with a finite number of registers. Nested words are words with a
nesting structure, allowing to model unranked trees as their depth-first-search
linearisations. In this paper, we consider transformations from nested words to
words, allowing in particular to produce unranked trees if output words have a
nesting structure. The model of visibly pushdown transducers allows to describe
such transformations, and we propose a simple deterministic extension of this
model with two-way moves that has the following properties: i) it is a simple
computational model, that naturally has a good evaluation complexity; ii) it is
expressive: it subsumes nested word-to-word MSO transducers, and the exact
expressiveness of MSO transducers is recovered using a simple syntactic
restriction; iii) it has good algorithmic/closure properties: the model is
closed under composition with a unambiguous one-way letter-to-letter transducer
which gives closure under regular look-around, and has a decidable equivalence
problem.


title: Clustering with phylogenetic tools in astrophysics

abstract:
  Phylogenetic approaches are finding more and more applications outside the
field of biology. Astrophysics is no exception since an overwhelming amount of
multivariate data has appeared in the last twenty years or so. In particular,
the diversification of galaxies throughout the evolution of the Universe quite
naturally invokes phylogenetic approaches. We have demonstrated that Maximum
Parsimony brings useful astrophysical results, and we now proceed toward the
analyses of large datasets for galaxies. In this talk I present how we solve
the major difficulties for this goal: the choice of the parameters, their
discretization, and the analysis of a high number of objects with an
unsupervised NP-hard classification technique like cladistics. 1. Introduction
How do the galaxy form, and when? How did the galaxy evolve and transform
themselves to create the diversity we observe? What are the progenitors to
present-day galaxies? To answer these big questions, observations throughout
the Universe and the physical modelisation are obvious tools. But between
these, there is a key process, without which it would be impossible to extract
some digestible information from the complexity of these systems. This is
classification. One century ago, galaxies were discovered by Hubble. From
images obtained in the visible range of wavelengths, he synthetised his
observations through the usual process: classification. With only one parameter
(the shape) that is qualitative and determined with the eye, he found four
categories: ellipticals, spirals, barred spirals and irregulars. This is the
famous Hubble classification. He later hypothetized relationships between these
classes, building the Hubble Tuning Fork. The Hubble classification has been
refined, notably by de Vaucouleurs, and is still used as the only global
classification of galaxies. Even though the physical relationships proposed by
Hubble are not retained any more, the Hubble Tuning Fork is nearly always used
to represent the classification of the galaxy diversity under its new name the
Hubble sequence (e.g. Delgado-Serrano, 2012). Its success is impressive and can
be understood by its simplicity, even its beauty, and by the many correlations
found between the morphology of galaxies and their other properties. And one
must admit that there is no alternative up to now, even though both the Hubble
classification and diagram have been recognised to be unsatisfactory. Among the
most obvious flaws of this classification, one must mention its monovariate,
qualitative, subjective and old-fashioned nature, as well as the difficulty to
characterise the morphology of distant galaxies. The first two most significant
multivariate studies were by Watanabe et al. (1985) and Whitmore (1984). Since
the year 2005, the number of studies attempting to go beyond the Hubble
classification has increased largely. Why, despite of this, the Hubble
classification and its sequence are still alive and no alternative have yet
emerged (Sandage, 2005)? My feeling is that the results of the multivariate
analyses are not easily integrated into a one-century old practice of modeling
the observations. In addition, extragalactic objects like galaxies, stellar
clusters or stars do evolve. Astronomy now provides data on very distant
objects, raising the question of the relationships between those and our
present day nearby galaxies. Clearly, this is a phylogenetic problem.
Astrocladistics 1 aims at exploring the use of phylogenetic tools in
astrophysics (Fraix-Burnet et al., 2006a,b). We have proved that Maximum
Parsimony (or cladistics) can be applied in astrophysics and provides a new
exploration tool of the data (Fraix-Burnet et al., 2009, 2012, Cardone \&
Fraix-Burnet, 2013). As far as the classification of galaxies is concerned, a
larger number of objects must now be analysed. In this paper, I

categories: astro-ph.IM math.ST q-bio.QM stat.ML stat.TH


title: Persistence probabilities for stationary increment processes

abstract:
  We study the persistence probability for processes with stationary
increments. Our results apply to a number of examples: sums of stationary
correlated random variables whose scaling limit is fractional Brownian motion,
random walks in random sceneries, random processes in Brownian scenery, and the
Matheron-de Marsily model in Z^2 with random orientations of the horizontal
layers. Using a new approach, strongly related to the study of the range, we
obtain an upper bound of optimal order in the general case and improved lower
bounds (compared to previous literature) for many processes.


title: The HOMFLYPT polynomials of sublinks and the Yokonuma-Hecke algebras

abstract:
  We describe completely the link invariants constructed using Markov traces on
the Yokonuma-Hecke algebras in terms of the linking matrix and the HOMFLYPT
polynomials of sublinks.


title: Tropical totally positive matrices

abstract:
  We investigate the tropical analogues of totally positive and totally
nonnegative matrices. These arise when considering the images by the
nonarchimedean valuation of the corresponding classes of matrices over a real
nonarchimedean valued field, like the field of real Puiseux series. We show
that the nonarchimedean valuation sends the totally positive matrices precisely
to the Monge matrices. This leads to explicit polyhedral representations of the
tropical analogues of totally positive and totally nonnegative matrices. We
also show that tropical totally nonnegative matrices with a finite permanent
can be factorized in terms of elementary matrices. We finally determine the
eigenvalues of tropical totally nonnegative matrices, and relate them with the
eigenvalues of totally nonnegative matrices over nonarchimedean fields.


title:
Symplectic Instanton Homology: twisting, connected sums, and Dehn
  surgery

abstract:
  We define a twisted version of Manolescu and Woodward's Symplectic Instanton
homology, prove that this invariant fits into the framework of Wehrheim and
Woodward's Floer Field theory, and describe its behaviour for connected sum and
Dehn surgery.


title:
Using network centrality measures to improve national journal
  classification lists

abstract:
  In countries like Denmark and Spain classified journal lists are now being
produced and used in the calculation of nationwide performance indicators. As a
result, Danish and Spanish scholars are advised to contribute to journals of
high 'authority' (as in the former) or those within a high class (as in the
latter). This can create a few problems. The aim of this paper is to analyse
the potential use of network centrality measures to identify possible
mismatches of journal categories. It analysis the Danish National Authority
List and the Spanish CIRC Classification. Based on a sample of Library and
Information Science publications, it analyses centrality measures that can
assess on the importance of journals to given fields, correcting mismatches in
these classifications. We conclude by emphasising the use of these measures to
better calibrate journal classifications as we observe a general bias in these
lists towards older journals. Centrality measures can allow to identify
periphery-to-core journals' transitions.


title:
Entanglement and manipulation of the magnetic and spin-orbit order in
  multiferroic Rashba semiconductors

abstract:
  The interplay between electronic eigenstates, spin, and orbital degrees of
freedom, combined with fundamental breaking of symmetries is currently one of
the most exciting fields of research. Multiferroics such as (GeMn)Te fulfill
these requirements providing unusual physical properties due to the coexistence
and coupling between ferromagnetic and ferroelectric order in one and the same
system. Here we show that multiferroic (GeMn)Te inherits from its parent
ferroelectric {\alpha}-GeTe compound a giant Rashba splitting of
three-dimensional bulk states which competes with the Zeeman spin splitting
induced by the magnetic exchange interactions. The collinear alignment of
ferroelectric and ferromagnetic polarization leads to an opening of a tunable
Zeeman gap of up to 100 meV around the Dirac point of the Rashba bands, coupled
with a change in spin texture by entanglement of magnetic and spin-orbit order.
Through applications of magnetic fields, we demonstrate manipulation of spin-
texture by spin resolved photoemission experiments, which is also expected for
electric fields based on the multiferroic coupling. The control of spin
helicity of the bands and its locking to ferromagnetic and ferroelectric order
opens fascinating new avenues for highly multifunctional multiferroic Rashba
devices suited for reprogrammable logic and/or nonvolatile memory applications.


title: ctsmr - Continuous Time Stochastic Modeling in R

abstract:
  ctsmr is an R package providing a general framework for identifying and
estimating partially observed continuous-discrete time gray-box models. The
estimation is based on maximum likelihood principles and Kalman filtering
efficiently implemented in Fortran. This paper briefly demonstrates how to
construct a Continuous Time Stochastic Model using multivariate time series
data, and how to estimate the embedded parameters. The setup provides a unique
framework for statistical modeling of physical phenomena, and the approach is
often called grey box modeling. Finally three examples are provided to
demonstrate the capabilities of ctsmr.


title:
Impurity screening and stability of Fermi arcs against Coulomband
  magnetic scattering in a Weyl monopnictide

abstract:
  We present a quasiparticle interference study of clean and Mn surface-doped
TaAs, a prototypical Weyl semimetal, to test the screening properties as well
as the stability of Fermi arcs against Coulomb and magnetic scattering.
Contrary to topological insulators, the impurities are effectively screened in
Weyl semimetals. The adatoms significantly enhance the strength of the signal
such that theoretical predictions on the potential impact of Fermi arcs can be
unambiguously scrutinized. Our analysis reveals the existence of three
extremely short, previously unknown scattering vectors. Comparison with theory
traces them back to scattering events between large parallel segments of
spin-split trivial states, strongly limiting their coherence. In sharp contrast
to previous work [R. Batabyal et al., Sci. Adv. 2, e1600709 (2016)], where
similar but weaker subtle modulations were interpreted as evidence of
quasiparticle interference originating from Femi arcs, we can safely exclude
this being the case. Overall, our results indicate that intra- as well as
inter-Fermi arc scattering are strongly suppressed and may explain why-in spite
of their complex multiband structure-transport measurements show signatures of
topological states in Weyl monopnictides.


title: Tighter spots of light with superposed orbital angular momentum beams

abstract:
  The possibility of focusing light to an ever tighter spot has important
implications for many applications and fields of optics research, such as
nano-optics and plasmonics, laser-scanning microscopy, optical data storage and
many more. The size of lateral features of the field at the focus depends on
several parameters, including the numerical aperture of the focusing system,
but also the wavelength and polarization, phase and intensity distribution of
the input beam. Here, we study the smallest achievable focal feature sizes of
coherent superpositions of two co-propagating beams carrying opposite orbital
angular momentum. We investigate the feature sizes for this class of beams not
only in the scalar limit, but also use a fully vectorial treatment to discuss
the case of tight focusing. Both our numerical simulations and our experimental
results confirm that lateral feature sizes considerably smaller than those of a
tightly focused Gaussian light beam can be observed. These findings may pave
the way for improving the resolution of imaging systems or may find
applications in nano-optics experiments.


title:
PhET. Percepciones y contribucion del uso de simulaciones en el
  aprendizaje de los conceptos de energia para un curso de fisica general de la
  ensenanza tecnica

abstract:
  The physics learning is very important to techniques teaching and the
engineers upbringing. However, there is evidence that science classes from
elementary school through to university are generally failing to provide most
students with an understanding of physics We have explored the use of a novel
aspect of information technology: interactive simulations to learning of
energys concepts. This way, students can construct their understanding through
semi-guided exploration. Research has shown this process to be an effective and
engaging way to learn.


title:
A New PLS-II In-Vacuum Undulator and Characterization of Undulator
  Radiation

abstract:
  This paper describes the result of overall studies from development to
characterization of undulator radiation. After three years of upgrading, PLS-II
[1, 2] has been operating successfully since 21st March 2012. During the
upgrade, we developed and installed an in-vacuum undulator (IVU) that generates
brilliant X-ray beam. The IVU with 3 GeV electron beam generates undulator
radiation up to ~ 21 keV using 11th higher harmonic. The characterizations of
the undulator radiation at an X-ray beam line in PLS-II agreed well with the
simulation. Based on this performance demonstration, the in-vacuum undulator is
successfully operating at PLS-II.


title:
Highly Parallel Demagnetization Field Calculation Using the Fast
  Multipole Method on Tetrahedral Meshes with Continuous Sources

abstract:
  The long-range magnetic field is the most time-consuming part in
micromagnetic simulations. Improvements both on a numerical and computational
basis can relief problems related to this bottleneck. This work presents an
efficient implementation of the Fast Multipole Method [FMM] for the magnetic
scalar potential as used in micromagnetics. We assume linearly magnetized
tetrahedral sources, treat the near field directly and use analytical
integration on the multipole expansion in the far field. This approach tackles
important issues like the vectorial and continuous nature of the magnetic
field. By using FMM the calculations scale linearly in time and memory.


title:
Study of BESIII electromagnetic calorimeter performance with radiative
  lepton pair events

abstract:
  We study the photon detection efficiency and position resolution of the
electromagnetic calorimeter (EMC) of the BESIII detector. The control samples
of the initial-state-radiation (ISR) process of $e^+e^-\rightarrow \gamma
\mu^+\mu^-$ at $J/\psi$ and $\psi(3770)$ resonances are used for the
calibration of the photon cluster shapes and photon detection efficiency study.
The photon detection efficiency is defined as the fraction of predicted photon,
determined by performing a kinematic fit with the four momenta of two charged
tracks only, matched with the actual photons in the EMC. The spatial resolution
of the EMC is studied in polar ($\theta$) and azimuthal ($\phi$) angle
directions in a cylindrical coordinate system centered at the interaction
point, with z-axis along the beam direction.


title:
Strong Klee-And\^o Theorems through an Open Mapping Theorem for
  cone-valued multi-functions

abstract:
  A version of the classical Klee-And\^o Theorem states the following: For
every Banach space $X$, ordered by a closed generating cone $C\subseteq X$,
there exists some $\alpha>0$ so that, for every $x\in X$, there exist
$x^{\pm}\in C$ so that $x=x^{+}-x^{-}$ and
$\|x^{+}\|+\|x^{-}\|\leq\alpha\|x\|$.
  The conclusion of the Klee-And\^o Theorem is what is known as a conormality
property.
  We prove stronger and somewhat more general versions of the Klee-And\^o
Theorem for both conormality and coadditivity (a property that is intimately
related to conormality). A corollary to our result shows that the functions
$x\mapsto x^{\pm}$, as above, may be chosen to be bounded, continuous, and
positively homogeneous, with a similar conclusion yielded for coadditivity.
Furthermore, we show that the Klee-And\^o Theorem generalizes beyond ordered
Banach spaces to Banach spaces endowed with arbitrary collections of cones.
Proofs of our Klee-And\^o Theorems are achieved through an Open Mapping Theorem
for cone-valued multi-functions/correspondences.
  We very briefly discuss a potential further strengthening of The Klee-And\^o
Theorem beyond what is proven in this paper, and motivate a conjecture that
there exists a Banach space $X$, ordered by a closed generating cone
$C\subseteq X$, for which there exist no Lipschitz functions
$(\cdot)^{\pm}:X\to C$ satisfying $x=x^{+}-x^{-}$ for all $x\in X$.


title:
The Probabilities of Large Deviations for the Chi-square and
  Log-likelihood Ratio Statistics

abstract:
  A new large deviation results for the Pearson chi-square and Log-likelihood
ratio statistics are obtained. Here attention is focused on the case when the
number of groups increases to infinity and the probabilities of groups
decreases to zero, as the sample size tends to infinity.


title: Profile-Driven Automated Mixed Precision

abstract:
  We present a scheme to automatically set the precision of floating point
variables in an application. We design a framework that profiles applications
to measure undesirable numerical behavior at the floating point operation
level. We use this framework to perform mixed precision analysis to
heuristically set the precision of all variables in an application based on
their numerical profiles. We experimentally evaluate the mixed precision
analysis to show that it can generate a range of results with different
accuracy and performance characteristics.


title:
Testing High Dimensional Covariance Matrices, with Application to
  Detecting Schizophrenia Risk Genes

abstract:
  Scientists routinely compare gene expression levels in cases versus controls
in part to determine genes associated with a disease. Similarly, detecting
case-control differences in co-expression among genes can be critical to
understanding complex human diseases; however statistical methods have been
limited by the high dimensional nature of this problem. In this paper, we
construct a sparse-Leading-Eigenvalue-Driven (sLED) test for comparing two
high-dimensional covariance matrices. By focusing on the spectrum of the
differential matrix, sLED provides a novel perspective that accommodates what
we assume to be common, namely sparse and weak signals in gene expression data,
and it is closely related with Sparse Principal Component Analysis. We prove
that sLED achieves full power asymptotically under mild assumptions, and
simulation studies verify that it outperforms other existing procedures under
many biologically plausible scenarios. Applying sLED to the largest
gene-expression dataset obtained from post-mortem brain tissue from
Schizophrenia patients and controls, we provide a novel list of genes
implicated in Schizophrenia and reveal intriguing patterns in gene
co-expression change for Schizophrenia subjects. We also illustrate that sLED
can be generalized to compare other gene-gene "relationship" matrices that are
of practical interest, such as the weighted adjacency matrices.


title: On a Topic Model for Sentences

abstract:
  Probabilistic topic models are generative models that describe the content of
documents by discovering the latent topics underlying them. However, the
structure of the textual input, and for instance the grouping of words in
coherent text spans such as sentences, contains much information which is
generally lost with these models. In this paper, we propose sentenceLDA, an
extension of LDA whose goal is to overcome this limitation by incorporating the
structure of the text in the generative and inference processes. We illustrate
the advantages of sentenceLDA by comparing it with LDA using both intrinsic
(perplexity) and extrinsic (text classification) evaluation tasks on different
text collections.


title: A Coalition of Single Slit and Double Slit Diffraction

abstract:
  In this paper, we theoretically investigate a particular experimental setup
which coalesces the concepts of the double slit and single slit diffraction. In
Thomas Young's classic double slit experiment, monochromatic plane light wave
impinges on an opaque screen with two parallel, long and narrow slits and the
resulting intensity pattern is observed on a screen placed at a great distance
placed from the slits. We show, via theoretical calculations that the if
another opaque screen with a single long narrow slit is placed at a distance
from the two slits, the resulting intensity pattern on the observation screen
is nontrivial and interesting.


title: A simple example of pressure excitation:the 3D square well potential

abstract:
  High pressure experiments in diamond anvil cells as well as in geophysics
show that at certain discrete values of pressure abrupt changes of the mass
density and changes of the material structure occur. The aim of this paper is
to discuss the influence of high external pressure on atoms and molecules using
the $3D$ square well potential as a simple solvable quantum mechanical example.
Values of external pressure needed for a transition between energy levels with
different values of the main quantum number $n$, as well as the pressure needed
to expel the particle from this system are calculated. In both cases discrete
values of pressure are obtained.


title: From Graphs to Keyed Quantum Hash Functions

abstract:
  We present two new constructions of quantum hash functions: the first based
on expander graphs and the second based on extractor functions and estimate the
amount of randomness that is needed to construct them. We also propose a keyed
quantum hash function based on extractor function that can be used in quantum
message authentication codes and assess its security in a limited attacker
model.


title:
Estimating the EMG response exclusively to fatigue during sustained
  static maximum voluntary contraction

abstract:
  The increase of surface electromyography (sEMG) root-mean-square (RMS) is
very frequently used to determine fatigue. However, as RMS is also influenced
by muscle force,its effective usage as indicator of fatigue is mainly limited
to isometric, constant force tasks.This research develops a simple me-thodto
preclude the effect of muscle force, hereby estimates the EMG amplitude
response exclusively to fatigue with RMS. Experiment was carried out on the
biceps brachiis of 15 subjects (7males, 8 females) during sustained static
maximum voluntary contractions (sMVC).Result shows that the sEMG RMS response
to fatigue increasesto 21.27% while muscle force decreasing to 50%MVC, which
implies that more and more extra effort is needed as muscle fatigue
intensifies. It would be promising to use the RMS response exclusively to
fatigue as an indicator of muscle fatigue.


title: Quantum consciousness in warm, wet, and noisy brain

abstract:
  The emergence of quantum consciousness stems from dynamic flows of hydrogen
ions in brain liquid. This liquid contains vast areas of the fourth phase of
water with hexagonal packing of its molecules, the so-called exclusion zone
(EZ) of water. The hydrogen ion motion on such hexagonal lattices shows as the
hopping of the ions forward and the holes (vacant places) backward, caused by
the Grotthuss mechanism. By supporting this motion using external infrasound
sources, one may achieve the appearance of the superfluid state of the EZ
water. Flows of the hydrogen ions are described by the modified Navier-Stokes
equation. It, along with the continuity equation, yields the nonlinear
Schrodinger equation, which describes the quantum effects of these flows, such
as the tunneling at long distances or the interference on gap junctions.


title:
Applying Adomian Decomposition Method to Solve Burgess Equation with a
  Non-linear Source

abstract:
  In the present work we consider the mathematical model that describes brain
tumour growth (glioblastomas) under medical treatment. Based on the medical
study presented by R. Stupp et al. (New Engl Journal of Med 352: 987-996, 2005)
which evidence that, combined therapies such as, radiotherapy and chemotherapy,
produces negative tumour-growth, and using the mathematical model of P. K.
Burgess et al. (J Neuropath and Exp Neur 56: 704-713, 1997) as an starting
point, we present a model for tumour growth under medical treatment represented
by a non-linear partial differential equation that is solved using the Adomian
Decomposition Method (ADM). It is also shown that the non-linear term
efficiently models the effects of the combined therapies. By means of a proper
use of parameters, this model could be used for calculating doses in
radiotherapy and chemotherapy.


title:
Generalized diffusion equation with fractional derivatives within Renyi
  statistics

abstract:
  By using the Zubarev nonequilibrium statistical operator method, and the
Liouville equation with fractional derivatives, a generalized diffusion
equation with fractional derivatives is obtained within the Renyi statistics.
Averaging in generalized diffusion coefficient is performed with a power
distribution with the Renyi parameter $q$.


title:
Relationship between Periodontal disease and Asthma among
  overweight/obese adults

abstract:
  Aim: To assess the relationship between oral health and asthma. Methods: Data
from 1,315 overweight or obese individuals, aged 40-65 years was used. Asthma
was self-reported, while periodontitis, bleeding on probing (BOP), and plaque
index were determined by clinical examinations. Results: Using logistic
regression adjusting for gender, smoking status, age, body mass index, family
history of asthma, and income level, revealed that the odds ratio (OR) of
asthma for a participant with severe periodontitis was 0.44 (95% confidence
interval: 0.27, 0.70) that of a participant with none/mild periodontitis . On
the other hand, proportion of BOP sites, and plaque index were not
statistically significant. For a participant with severe periodontitis, the OR
of taking asthma medication was 0.20 (95% confidence interval: 0.09, 0.43) that
of a participant with none/mild periodontitis. Moreover, proportion of BOP
sites was statistically associated to use of asthma medication while plaque
index still remained non-significant. Conclusion: Participants with severe
periodontitis were less likely to have asthma. Stronger evidence of an inverse
association was found when using asthma medication as outcome. Keywords:
asthma; periodontal disease; asthma medication; periodontitis; hygiene
hypothesis


title: Wave propagation in spatially modulated tubes

abstract:
  We investigate wave propagation in rotationally symmetric tubes with a
periodic spatial modulation of cross section. Using an asymptotic perturbation
analysis, the governing quasi two-dimensional reaction-diffusion equation can
be reduced into a one-dimensional reaction-diffusion-advection equation.
Assuming a weak perturbation by the advection term and using projection method,
in a second step, an equation of motion for traveling waves within such tubes
can be derived. Both methods predict properly the nonlinear dependence of the
propagation velocity on the ratio of the modulation period of the geometry to
the intrinsic width of the front, or pulse. As a main feature, we can observe
finite intervals of propagation failure of waves induced by the tube's
modulation. In addition, using the Fick-Jacobs approach for the highly
diffusive limit we show that wave velocities within tubes are governed by an
effective diffusion coefficient. Furthermore, we discuss the effects of a
single bottleneck on the period of pulse trains within tubes. We observe period
changes by integer fractions dependent on the bottleneck width and the period
of the entering pulse train.


title: Generalised block bootstrap and its use in meteorology

abstract:
  In an earlier paper Rakonczai et al. (2014), we have emphasized the effective
sample size for autocorrelated data. The simulations were based on the block
bootstrap methodology. However, the discreteness of the usual block size did
not allow for exact calculations. In this paper we propose a generalisation of
the block bootstrap methodology, relate it to the existing optimisation
procedures and apply it to a temperature data set. Our other focus is on
statistical tests, where quite often the actual sample size plays an important
role, even in case of relatively large samples. This is especially the case for
copulas. These are used for investigating the dependencies among data sets. As
in quite a few real applications the time dependence cannot be neglected, we
investigated the effect of this phenomenon to the used test statistic. The
critical values can be computed by the proposed new block bootstrap simulation,
where the block sizes are determined e.g. by fitting a VAR model to the
observations. The results are illustrated for models of the used temperature
data.


title: Advanced Transport Options for the Dynamic Adaptive Streaming over HTTP

abstract:
  Multimedia streaming over HTTP is no longer a niche research topic as it has
entered our daily live. The common assumption is that it is deployed on top of
the existing infrastructure utilizing application (HTTP) and transport (TCP)
layer protocols as is. Interestingly, standards like MPEG's Dynamic Adaptive
Streaming over HTTP (DASH) do not mandate the usage of any specific transport
protocol allowing for sufficient deployment flexibility which is further
supported by emerging developments within both protocol layers. This paper
investigates and evaluates the usage of advanced transport options for the
dynamic adaptive streaming over HTTP. We utilize a common test setup to
evaluate HTTP/2.0 and Google's Quick UDP Internet Connections (QUIC) protocol
in the context of DASH-based services.


title: Finding Singular Features

abstract:
  We present a method for finding high density, low-dimensional structures in
noisy point clouds. These structures are sets with zero Lebesgue measure with
respect to the $D$-dimensional ambient space and belong to a $d<D$ dimensional
space. We call them "singular features." Hunting for singular features
corresponds to finding unexpected or unknown structures hidden in point clouds
belonging to $\R^D$. Our method outputs well defined sets of dimensions $d<D$.
Unlike spectral clustering, the method works well in the presence of noise. We
show how to find singular features by first finding ridges in the estimated
density, followed by a filtering step based on the eigenvalues of the Hessian
of the density.


title:
Forces between Colloidal Particles in Aqueous Solutions Containing
  Monovalent and Multivalent Ions

abstract:
  The present article provides an overview of the recent progress in the direct
force measurements between individual pairs of colloidal particles in aqueous
salt solutions. Results obtained by two different techniques are being
highlighted, namely with the atomic force microscope (AFM) and optical
tweezers. One finds that the classical theory of Derjaguin, Landau, Verwey, and
Overbeek (DLVO) represents an accurate description of the force profiles even
in the presence of multivalent ions, typically down to distances of few
nanometers. However, the corresponding Hamaker constants and diffuse layer
potentials must be extracted from the force profiles. At low salt
concentrations, double layer forces remain repulsive and may become long
ranged. At short distances, additional short range non-DLVO interactions may
become important. Such an interaction is particularly relevant in the presence
of multivalent counterions.