title:
Unsupervised Feature Learning Based on Deep Models for Environmental
  Audio Tagging

abstract:
  Environmental audio tagging aims to predict only the presence or absence of
certain acoustic events in the interested acoustic scene. In this paper we make
contributions to audio tagging in two parts, respectively, acoustic modeling
and feature learning. We propose to use a shrinking deep neural network (DNN)
framework incorporating unsupervised feature learning to handle the multi-label
classification task. For the acoustic modeling, a large set of contextual
frames of the chunk are fed into the DNN to perform a multi-label
classification for the expected tags, considering that only chunk (or
utterance) level rather than frame-level labels are available. Dropout and
background noise aware training are also adopted to improve the generalization
capability of the DNNs. For the unsupervised feature learning, we propose to
use a symmetric or asymmetric deep de-noising auto-encoder (sDAE or aDAE) to
generate new data-driven features from the Mel-Filter Banks (MFBs) features.
The new features, which are smoothed against background noise and more compact
with contextual information, can further improve the performance of the DNN
baseline. Compared with the standard Gaussian Mixture Model (GMM) baseline of
the DCASE 2016 audio tagging challenge, our proposed method obtains a
significant equal error rate (EER) reduction from 0.21 to 0.13 on the
development set. The proposed aDAE system can get a relative 6.7% EER reduction
compared with the strong DNN baseline on the development set. Finally, the
results also show that our approach obtains the state-of-the-art performance
with 0.15 EER on the evaluation set of the DCASE 2016 audio tagging task while
EER of the first prize of this challenge is 0.17.


title: Hierarchical learning for DNN-based acoustic scene classification

abstract:
  In this paper, we present a deep neural network (DNN)-based acoustic scene
classification framework. Two hierarchical learning methods are proposed to
improve the DNN baseline performance by incorporating the hierarchical taxonomy
information of environmental sounds. Firstly, the parameters of the DNN are
initialized by the proposed hierarchical pre-training. Multi-level objective
function is then adopted to add more constraint on the cross-entropy based loss
function. A series of experiments were conducted on the Task1 of the Detection
and Classification of Acoustic Scenes and Events (DCASE) 2016 challenge. The
final DNN-based system achieved a 22.9% relative improvement on average scene
classification error as compared with the Gaussian Mixture Model (GMM)-based
benchmark system across four standard folds.


title:
Breaking the Economic Barrier of Caching in Cellular Networks:
  Incentives and Contracts

abstract:
  In this paper, a novel approach for providing incentives for caching in small
cell networks (SCNs) is proposed based on the economics framework of contract
theory. In this model, a mobile network operator (MNO) designs contracts that
will be offered to a number of content providers (CPs) to motivate them to
cache their content at the MNO's small base stations (SBSs). A practical model
in which information about the traffic generated by the CPs' users is not known
to the MNO is considered. Under such asymmetric information, the incentive
contract between the MNO and each CP is properly designed so as to determine
the amount of allocated storage to the CP and the charged price by the MNO. The
contracts are derived by the MNO in a way to maximize the global benefit of the
CPs and prevent them from using their private information to manipulate the
outcome of the caching process. For this interdependent contract model, the
closed-form expressions of the price and the allocated storage space to each CP
are derived. This proposed mechanism is shown to satisfy the sufficient and
necessary conditions for the feasibility of a contract. Moreover, it is shown
that the proposed pricing model is budget balanced, enabling the MNO to cover
all the caching expenses via the prices charged to the CPs. Simulation results
show that none of the CPs will have an incentive to choose a contract designed
for CPs with different traffic loads.


title:
The origin of the excess transit absorption in the HD 189733 system:
  planet or star?

abstract:
  We have detected excess absorption in the emission cores of Ca II H & K
during transits of HD 189733b for the first time. Using observations of three
transits we investigate the origin of the absorption, which is also seen in
H{\alpha} and the Na I D lines. Applying differential spectrophotometry methods
to the Ca II H and Ca II K lines combined, using respective passband widths of
$\Delta\lambda$ = 0.4 & 0.6 \AA\ yields excess absorption of t$_d$ = 0.0074
$\pm$ 0.0044 (1.7$\sigma$; Transit 1) and 0.0214 +/- 0.0022 (9.8$\sigma$;
Transit 2). Similarly, we detect excess H{\alpha} absorption in a passband of
width $\Delta\lambda$ = 0.7 \AA, with t$_d$ = 0.0084 $\pm$ 0.0016 (5.2$\sigma$)
and 0.0121 $\pm$ 0.0012 (9.9$\sigma$). For both lines, Transit 2 is thus
significantly deeper. Combining all three transits for the Na I D lines yields
excess absorption of t$_d$ = 0.0041 $\pm$ 0.0006 (6.5$\sigma$). By considering
the time series observations of each line, we find that the excess apparent
absorption is best recovered in the stellar reference frame. These findings
lead us to postulate that the main contribution to the excess transit
absorption in the differential light curves arises because the normalising
continuum bands form in the photosphere, whereas the line cores contain a
chromospheric component. We can not rule out that part of the excess absorption
signature arises from the planetary atmosphere, but we present evidence which
casts doubt on recent claims to have detected wind motions in the planet's
atmosphere in these data.


title:
On Solutions for the Maximum Revenue Multi-item Auction under
  Dominant-Strategy and Bayesian Implementations

abstract:
  Very few exact solutions are known for the monopolist's $k$-item $n$-buyer
maximum revenue problem with additive valuation in which $k, n >1$ and the
buyers $i$ have independent private distributions $F^j_i$ on items $j$. In this
paper we derive exact formulas for the maximum revenue when $k=2$ and $F^j_i$
are any IID distributions on support of size 2, for both the dominant-strategy
(DIC) and the Bayesian (BIC) implementations. The formulas lead to the simple
characterization that, the two implementations have identical maximum revenue
if and only if selling-separately is optimal for the distribution. Our results
also give the first demonstration, in this setting, of revenue gaps between the
two implementations. For instance, if $k=n=2$ and
$Pr\{X_F=1\}=Pr\{X_F=2\}=\frac{1}{2}$, then the maximum revenue in the Bayesian
implementation exceeds that in the dominant-strategy by exactly $2\%$; the same
gap exists for the continuous uniform distribution $X_F$ over $[a, a+1]\cup[2a,
2a+1]$ for all large $a$.


title:
Tailored long range forces on polarizable particles by collective
  scattering of broadband radiation

abstract:
  Collective coherent light scattering by polarizable particles creates
surprisingly strong, long range inter-particle forces originating from
interference of the light scattered by different particles. While for
monochromatic laser beams this interaction decays with the inverse distance, we
show here that in general the effective interaction range and geometry can be
controlled by the illumination bandwidth and geometry. As generic example we
study the modifications inter-particle forces within a 1D chain of atoms
trapped in the field of a confined optical nanofiber mode. For two particles we
find short range attraction as well as optical binding at multiple distances.
The range of stable distances shrinks with increasing light bandwidth and for a
very large bandwidth field as e.g. blackbody radiation we find a strongly
attractive potential up to a critical distance beyond which the force gets
repulsive. Including multiple scattering can even lead to the appearance of a
stable configuration at a large distance. Such broadband scattering forces
should be observable contributions in ultra-cold atom interferometers or atomic
clocks setups. They could be studied in detail in 1D~geometries with ultra-cold
atoms trapped along or within an optical nanofiber. Broadband radiation force
interactions might also contribute in astrophysical scenarios as illuminated
cold dust clouds.


title: Critical comments on EEG sensor space dynamical connectivity analysis

abstract:
  Many different analysis techniques have been developed and applied to EEG
recordings that allow one to investigate how different brain areas interact.
One particular class of methods, based on the linear parametric representation
of multiple interacting time series, is widely used to study causal
connectivity in the brain. However, the results obtained by these methods
should be interpreted with great care. The goal of this paper is to show, both
theoretically and using simulations, that results obtained by applying causal
connectivity measures on the sensor (scalp) time series do not allow
interpretation in terms of interacting brain sources. This is because 1) the
channel locations cannot be seen as an approximation of a source's anatomical
location and 2) spurious connectivity can occur between sensors. Although many
measures of causal connectivity derived from EEG sensor time series are
affected by the latter, here we will focus on the well-known time domain index
of Granger causality (GC) and on the frequency domain directed transfer
function (DTF). Using the state-space framework and designing two simulation
studies we show that mixing effects caused by volume conduction can lead to
spurious connections, detected either by time domain GC or by DTF. Therefore,
GC/DTF causal connectivity measures should be computed at the source level, or
derived within analysis frameworks that model the effects of volume conduction.
Since mixing effects can also occur in the source space, it is advised to
combine source space analysis with connectivity measures that are robust to
mixing.


title: The Anarchy of Scheduling Without Money

abstract:
  We consider the scheduling problem on $n$ strategic unrelated machines when
no payments are allowed, under the objective of minimizing the makespan. We
adopt the model introduced in [Koutsoupias, Theory Comput. Syst. (2014)] where
a machine is bound by her declarations in the sense that if she is assigned a
particular job then she will have to execute it for an amount of time at least
equal to the one she reported, even if her private, true processing
capabilities are actually faster. We provide a (non-truthful) randomized
algorithm whose pure Price of Anarchy is arbitrarily close to $1$ for the case
of a single task and close to $n$ if it is applied independently to schedule
many tasks. Previous work considers the constraint of truthfulness and proves a
tight approximation ratio of $(n+1)/2$ for one task which generalizes to
$n(n+1)/2$ for many tasks. Furthermore, we revisit the truthfulness case and
reduce the latter approximation ratio for many tasks down to $n$,
asymptotically matching the best known lower bound. This is done via a detour
to the relaxed, fractional version of the problem, for which we are also able
to provide an optimal approximation ratio of $1$. Finally, we mention that all
our algorithms achieve optimal ratios of $1$ for the social welfare objective.


title:
Which quantum theory must be reconciled with gravity? (And what does it
  mean for black holes?)

abstract:
  We consider the nature of quantum properties in non-relativistic quantum
mechanics (QM) and relativistic QFTs, and examine the connection between formal
quantization schemes and intuitive notions of wave-particle duality. Based on
the map between classical Poisson brackets and their associated commutators,
such schemes give rise to quantum states obeying canonical dispersion
relations, obtained by substituting the de Broglie relations into the relevant
(classical) energy-momentum relation. In canonical QM, this yields a dispersion
relation involving $\hbar$ but not $c$, whereas the canonical relativistic
dispersion relation involves both. Extending this logic to the canonical
quantization of the gravitational field gives rise to loop quantum gravity, and
a map between classical variables containing $G$ and $c$, and associated
commutators involving $\hbar$. This naturally defines a "wave-gravity duality",
suggesting that a quantum wave packet describing {\it self-gravitating matter}
obeys a dispersion relation involving $G$, $c$ and $\hbar$. We propose an
ansatz for this relation, which is valid in the semi-Newtonian regime of both
QM and general relativity. In this limit, space and time are absolute, but
imposing $v_{\rm max} = c$ allows us to recover the standard expressions for
the Compton wavelength $\lambda_C$ and the Schwarzschild radius $r_S$ within
the same ontological framework. The new dispersion relation is based on
"extended" de Broglie relations, which remain valid for slow-moving bodies of
{\it any} mass $m$. These reduce to canonical form for $m \ll m_P$, yielding
$\lambda_C$ from the standard uncertainty principle, whereas, for $m \gg m_P$,
we obtain $r_S$ as the natural radius of a self-gravitating quantum object.
Thus, the extended de Broglie theory naturally gives rise to a unified
description of black holes and fundamental particles in the semi-Newtonian
regime.


title: A Fast Fourier Transform for Fractal Approximations

abstract:
  We consider finite approximations of a fractal generated by an iterated
function system of affine transformations on $\mathbb{R}^d$ as a discrete set
of data points. Considering a signal supported on this finite approximation, we
propose a Fast (Fractal) Fourier Transform by choosing appropriately a second
iterated function system to generate a set of frequencies for a collection of
exponential functions supported on this finite approximation. Since both the
data points of the fractal approximation and the frequencies of the exponential
functions are generated by iterated function systems, the matrix representing
the Discrete Fourier Transform (DFT) satisfies certain recursion relations,
which we describe in terms of Di\c{t}\v{a}'s construction for large Hadamard
matrices. These recursion relations allow for the DFT matrix calculation to be
reduced in complexity to O(N log N ), as in the case of the classical FFT.


title: Sequential Cost-Sensitive Feature Acquisition

abstract:
  We propose a reinforcement learning based approach to tackle the
cost-sensitive learning problem where each input feature has a specific cost.
The acquisition process is handled through a stochastic policy which allows
features to be acquired in an adaptive way. The general architecture of our
approach relies on representation learning to enable performing prediction on
any partially observed sample, whatever the set of its observed features are.
The resulting model is an original mix of representation learning and of
reinforcement learning ideas. It is learned with policy gradient techniques to
minimize a budgeted inference cost. We demonstrate the effectiveness of our
proposed method with several experiments on a variety of datasets for the
sparse prediction problem where all features have the same cost, but also for
some cost-sensitive settings.


title:
Tight upper and lower bounds to the eigenvalues and critical parameters
  of a double well

abstract:
  By means of a suitable rational approximation to the logarithmic derivative
of the wavefunction we obtain tight upper and lower bounds to the eigenvalues
and critical parameters of the quartic double-well potential.


title: Constraining some Horndeski gravity theories

abstract:
  We discuss two spherically symmetric solutions admitted by the Horndeski (or
scalar tensor) theory in the context of solar system and astrophysical
scenarios. One of these solutions is derived for Einstein-Gauss-Bonnet gravity,
while the other originates from the coupling of the Gauss-Bonnet invariant with
a scalar field. Specifically, we discuss the perihelion precession and the
bending angle of light for these two different spherically symmetric spacetimes
derived in references \cite{Maeda:2006hj} and \cite{Sotiriou:2014pfa}
respectively. The later in particular, applies only to the black hole
spacetimes. We further delineate on the numerical bounds of relevant parameters
of these theories from such computations.


title:
Impact of spatially constrained sampling of temporal contact networks on
  the evaluation of the epidemic risk

abstract:
  The ability to directly record human face-to-face interactions increasingly
enables the development of detailed data-driven models for the spread of
directly transmitted infectious diseases at the scale of individuals. Complete
coverage of the contacts occurring in a population is however generally
unattainable, due for instance to limited participation rates or experimental
constraints in spatial coverage. Here, we study the impact of spatially
constrained sampling on our ability to estimate the epidemic risk in a
population using such detailed data-driven models. The epidemic risk is
quantified by the epidemic threshold of the
susceptible-infectious-recovered-susceptible model for the propagation of
communicable diseases, i.e. the critical value of disease transmissibility
above which the disease turns endemic. We verify for both synthetic and
empirical data of human interactions that the use of incomplete data sets due
to spatial sampling leads to the underestimation of the epidemic risk. The bias
is however smaller than the one obtained by uniformly sampling the same
fraction of contacts: it depends nonlinearly on the fraction of contacts that
are recorded and becomes negligible if this fraction is large enough. Moreover,
it depends on the interplay between the timescales of population and spreading
dynamics.


title:
Gas and dust around A-type stars at tens of Myr:signatures of cometary
  breakup

abstract:
  Discs of dusty debris around main-sequence star indicate fragmentation of
orbiting planetesimals, and for a few A-type stars, a gas component is also
seen that may come from collisionally-released volatiles. Here we find the
sixth example of a CO-hosting disc, around the 30Myr old A0-star HD 32297. Two
more of these CO-hosting stars, HD 21997 and 49 Cet, have also been imaged in
dust with SCUBA-2 within the SONS project. A census of 27 A-type debris hosts
within 125 pc now shows 7/16 detections of carbon-bearing gas within the 5-50
Myr epoch, with no detections in 11 older systems. Such a prolonged period of
high fragmentation rates corresponds quite well to the epoch when most of the
Earth was assembled from planetesimal collisions. Recent models propose that
collisional products can be spatially asymmetric if they originate at one
location in the disc, with CO particularly exhibiting this behaviour as it can
photodissociate in less than an orbital period. Of the six CO-hosting systems,
only beta Pic is in clear support of this hypothesis. However, radiative
transfer modelling with the ProDiMo code shows that the CO is also hard to
explain in a proto-planetary disc context.


title:
From Kardar-Parisi-Zhang scaling to explosive desynchronization in
  arrays of limit-cycle oscillators

abstract:
  We study the synchronization physics of 1D and 2D oscillator lattices subject
to noise and predict a dynamical transition that leads to a sudden drastic
increase of phase diffusion. Our analysis is based on the widely applicable
Kuramoto-Sakaguchi model, with local couplings between oscillators. For smooth
phase fields, the time evolution can initially be described by a surface growth
model, the Kardar-Parisi-Zhang (KPZ) theory. We delineate the regime in which
one can indeed observe the universal KPZ scaling in 1D lattices. For larger
couplings, both in 1D and 2D, we observe a stochastic dynamical instability
that is linked to an apparent finite-time singularity in a related KPZ lattice
model. This has direct consequences for the frequency stability of coupled
oscillator lattices, and it precludes the observation of non-Gaussian
KPZ-scaling in 2D lattices.


title: Moduli of cubic surfaces and their anticanonical divisors

abstract:
  We consider the moduli space of log smooth pairs formed by a cubic surface
and an anticanonical divisor. We describe all compactifications of this moduli
space which are constructed using Geometric Invariant Theory and the
anticanonical polarization. The construction depends on a weight on the
divisor. For smaller weights the stable pairs consist of mildly singular
surfaces and very singular divisors. Conversely, a larger weight allows more
singular surfaces, but it restricts the singularities on the divisor. The
one-dimensional space of stability conditions decomposes in a wall-chamber
structure. We describe all the walls and relate their value to the worst
singularities appearing in the compactification locus. Furthermore, we give a
complete characterization of stable and polystable pairs in terms of their
singularities for each of the compactifications considered.


title: Indirect Maximum Entropy Bandwidth

abstract:
  This paper proposes a new method of bandwidth selection in kernel estimation
of density and distribution functions motivated by the connection between
maximisation of the entropy of probability integral transforms and maximum
likelihood in classical parametric models. The proposed estimators are designed
to indirectly maximise the entropy of the leave-one-out kernel estimates of a
distribution function, which are the analogues of the parametric probability
integral transforms.
  The estimators based on minimisation of the Cramer-von Mises discrepancy,
near-solution of the moment-based estimating equations, and inversion of the
Neyman smooth test statistic are discussed and their performance compared in a
simulation study. The bandwidth minimising the Anderson-Darling statistic is
found to perform reliably for a variety of distribution shapes and can be
recommended in practice.
  The results will also be of interest to anyone analysing the cross-validation
bandwidths based on leave-one-out estimates or evaluation of nonparametric
density forecasts.


title: Glancing through the accretion column of EXO 2030+375

abstract:
  We took advantage of the large collecting area and good timing capabilities
of the EPIC cameras on-board XMM-Newton to investigate the accretion geometry
onto the magnetized neutron star hosted in the high mass X-ray binary EXO
2030+375 during the rise of a source Type-I outburst in 2014. We carried out a
timing and spectral analysis of the XMM-Newton observation as function of the
neutron star spin phase. We used a phenomenological spectral continuum model
comprising the required fluorescence emission lines. Two neutral absorption
components are present: one covering fully the source and one only partially.
The same analysis was also carried out on two Suzaku observations of the source
performed during outbursts in 2007 and 2012, to search for possible spectral
variations at different luminosities. The XMM-Newton data caught the source at
an X-ray luminosity of $2\times10^{36}$ erg s$^{-1}$ and revealed the presence
of a narrow dip-like feature in its pulse profile that was never reported
before. The width of this feature corresponds to about one hundredth of the
neutron star spin period. From the results of the phase-resolved spectral
analysis we suggest that this feature can be ascribed to the self-obscuration
of the accretion stream passing in front of the observer line of sight. We
inferred from the Suzaku observation carried out in 2007 that the
self-obscuration of the accretion stream might produce a significantly wider
feature in the neutron star pulsed profile at higher luminosities
($\gtrsim$$2\times10^{37}$ erg s$^{-1}$).


title: UV/Optical emission from the expanding envelopes of type II supernovae

abstract:
  The early part of a supernova (SN) light-curve is dominated by radiation
escaping from the expanding shock-heated progenitor envelope. For polytropic
Hydrogen envelopes, the properties of the emitted radiation are described by
simple analytic expressions and are nearly independent of the polytropic index,
$n$. This analytic description holds at early time, $t<$~few days, during which
radiation escapes from shells initially lying near the stellar surface. We use
numerical solutions to address two issues. First, we show that the analytic
description holds at early time also for non-polytropic density profiles.
Second, we extend the solutions to later times, when the emission emerges from
deep within the envelope and depends on the progenitor's density profile.
Examining the late time behavior of polytropic envelopes with a wide range of
core to envelope mass and radius ratios, $0.1\le M_{\rm c}/M_{\rm env}\le10$
and $10^{-3}\le R_{\rm c}/R\le10^{-1}$, we find that the effective temperature
is well described by the analytic solution also at late time, while the
luminosity $L$ is suppressed by a factor, which may be approximated to better
than $20[30]\%$ accuracy up to $t=t_{\rm tr}/a$ by $A\exp[-(at/t_{\rm
tr})^\alpha]$ with $t_{\rm tr} = 15 (M_{\rm env}/M_\odot)^{3/4}(E/10^{51}{\rm
erg})^{-1/4}~\rm d$, $A=0.9[0.8]$, $a=1.7[4.6]$ and $\alpha=0.8[0.7]$ for
$n=3/2[3]$. This description holds as long as the opacity is approximately that
of a fully ionized gas, i.e. for $T>0.7~\rm eV$, $t<14(R/10^{13.5}{\rm
cm})^{0.55}~\rm d$. The suppression of $L$ at $t_{\rm tr}/a$ obtained for
standard polytropic envelopes may account for the first optical peak of
double-peaked SN light curves, with first peak at a few days for $M_{\rm
env}<1M_\odot$.


title: Ionization and Dust Charging in Protoplanetary Disks

abstract:
  Ionization-recombination balance in dense interstellar and circumstellar
environments is a key factor for a variety of important physical processes,
such as chemical reactions, dust charging and coagulation, coupling of the gas
with magnetic field and development of instabilities in protoplanetary disks.
We determine a critical gas density above which the recombination of electrons
and ions on the grain surface dominates over the gas-phase recombination. For
this regime, we present a self-consistent analytical model which allows us to
exactly calculate abundances of charged species in dusty gas, without making
assumptions on the grain charge distribution. To demonstrate the importance of
the proposed approach, we check whether the conventional approximation of low
grain charges is valid for typical protoplanetary disks, and discuss the
implications for dust coagulation and development of the "dead zone" in the
disk. The presented model is applicable for arbitrary grain-size distributions
and, for given dust properties and conditions of the disk, has only one free
parameter - the effective mass of the ions, shown to have a low effect on
results. The model can be easily included in numerical simulations following
the dust evolution in dense molecular clouds and protoplanetary disks.


title:
An alternative perspective to observe the critical phenomena of dilaton
  AdS black holes

abstract:
  The critical phenomena of dilaton AdS black holes are probed from a totally
different perspective other than the $P-v$ criticality and the $q-U$
criticality discussed in the former literature. We investigate not only the two
point correlation function but also the entanglement entropy of dilaton AdS
black holes. We achieve this goal by solving the equation of motion constrained
by the boundary condition numerically and we concentrate on $\delta L$ and
$\delta S$ which have been regularized by subtracting the terms in pure AdS
with the same boundary region. For both the two point correlation function and
the entanglement entropy, we consider $4\times2\times2=16$ cases due to
different choices of parameters. The van der Waals like behavior can be clearly
witnessed from all the $T-\delta L$ ($T-\delta S$) graphs for $q<q_c$.
Moreover, the effects of dilaton gravity and the spacetime dimensionality on
the phase structure of dilaton AdS black holes are disclosed. Furthermore, we
discuss the stability of dilaton AdS black holes by applying the analogous
specific heat definition and remove the unstable branch by introducing a bar
$T=T_*$. It is shown that the first order phase transition temperature $T_*$ is
affected by both $\alpha$ and $n$. The analogous equal area laws for both the
$T-\delta L$ graph and the $T-\delta S$ graph are examined numerically. The
relative errors for all the cases are small enough that we can safely conclude
that the analogous equal area laws hold for $T-\delta L$ ($T-\delta S$) graph
of dilaton AdS black holes.


title: An Invariance Principle for Stochastic Series II. Non Gaussian Limits

abstract:
  We study the convergence in total variation distance for series of the form
$$
S_{N}(c,Z)=\sum_{l=1}^{N}\sum_{i_{1}<\cdots<i_{l}}c(i_{1},...,i_{l})Z_{i_{1}}\cdots
Z_{i_{l}}, $$ where $Z_{k},k\in {\mathbb{N}}$ are independent centered random
variables with ${\mathbb{E}}(Z_{k}^{2})=1$. This enters in the framework of the
$U$--statistics theory which plays a major role in modern statistic. In the
case when $Z_{k},k\in {\mathbb{N}}$ are standard normal, $S_{N}(c,Z)$ is an
element of the sum of the first $N$ Wiener chaoses and, starting with the
seminal paper of D. Nualart and G. Peccati, the convergence of such functionals
to the Gaussian law has been extensively studied. So the interesting point
consists in studying invariance principles, that is, to replace Gaussian random
variables with random variables with a general law. This has been done in
several papers using the Fortet--Mourier distance, the Kolmogorov distance or
the total variance distance. In particular, estimates of the total variance
distance in terms of the fourth order cumulants has been given in the part I
(Gaussian limits) of the present paper. But, as the celebrated Fourth Moment
Theorem of Nualart and Peccati shows, such estimates are pertinent to deal with
Gaussian limits. In the present paper we study the convergence to general
limits which may be non Gaussian, and then the estimates of the error has to be
done in terms of the low influence factor only.


title: Interior volume of ($1+D$) dimensional Schwarzschild black hole

abstract:
  We calculate the maximum interior volume, enclosed by the event horizon, of a
($1+D$)-dimensional Schwarzschild black hole. Taking into account the mass
change due to Hawking radiation, we show that the volume increases towards the
end of the evaporation. This fact is not new as it has been observed earlier
for four dimensional case. The interesting point we observe is that this
increase rate decreases towards the higher value of space dimensions $D$; i.e.
it is a decelerated expansion of volume with the increase of spacial
dimensions. This implies that for a sufficiently large $D$, the maximum
interior volume does not change. The possible implications of these results are
also discussed.


title:
Possibilistic Networks: Parameters Learning from Imprecise Data and
  Evaluation strategy

abstract:
  There has been an ever-increasing interest in multidisciplinary research on
representing and reasoning with imperfect data. Possibilistic networks present
one of the powerful frameworks of interest for representing uncertain and
imprecise information. This paper covers the problem of their parameters
learning from imprecise datasets, i.e., containing multi-valued data. We
propose in the rst part of this paper a possibilistic networks sampling
process. In the second part, we propose a likelihood function which explores
the link between random sets theory and possibility theory. This function is
then deployed to parametrize possibilistic networks.


title: Classification of simple heavy vector triplet models

abstract:
  We investigate decay modes of spin-1 heavy vector bosons ($V'$) from the
viewpoint of perturbative unitarity in a model-independent manner. Perturbative
unitarity requires some relations among couplings. The relations are called
unitarity sum rules. We derive the unitarity sum rules from processes that
contain two fermions and two gauge bosons. We find the relations between $V'$
couplings to the SM fermions $(f)$ and $V'$ couplings to the SM gauge bosons
($V$). Using the coupling relations, we calculate partial decay widths for $V'$
decays into $VV$ and $ff$. We show that Br($W' \to WZ) \lesssim$ 2$\%$ in the
system that contains $V'$ and CP-even scalars as well as the SM particles. This
result is independent of the number of the CP-even scalars. We also show that
contributions of CP-odd scalars help to make Br($W' \to WZ$) larger than Br($W'
\to ff$) as long as the CP-odd scalars couple to both the SM fermions and the
SM gauge bosons. The existence of the CP-odd scalar couplings is a useful
guideline to construct models that predict Br($W' \to WZ) \gtrsim$ 2$\%$. Our
analysis relies only on the perturbative unitarity of $f\bar{f} \to WW'$.
Therefore our result can be applied to various models.


title:
Re-presenting a Story by Emotional Factors using Sentimental Analysis
  Method

abstract:
  Remembering an event is affected by personal emotional status. We examined
the psychological status and personal factors; depression (Center for
Epidemiological Studies - Depression, Radloff, 1977), present affective
(Positive Affective and Negative Affective Schedule, Watson et al., 1988), life
orient (Life Orient Test, Scheier & Carver, 1985), self-awareness (Core Self
Evaluation Scale, Judge et al., 2003), and social factor (Social Support,
Sarason et al., 1983) of undergraduate students (N=64) and got summaries of a
story, Chronicle of a Death Foretold (Gabriel Garcia Marquez, 1981) from them.
We implement a sentimental analysis model based on convolutional neural network
(LeCun & Bengio, 1995) to evaluate each summary. From the same vein used for
transfer learning (Pan & Yang, 2010), we collected 38,265 movie review data to
train the model and then use them to score summaries of each student. The
results of CES-D and PANAS show the relationship between emotion and memory
retrieval as follows: depressed people have shown a tendency of representing a
story more negatively, and they seemed less expressive. People with full of
emotion - high in PANAS - have retrieved their memory more expressively than
others, using more negative words then others. The contributions of this study
can be summarized as follows: First, lightening the relationship between
emotion and its effect during times of storing or retrieving a memory. Second,
suggesting objective methods to evaluate the intensity of emotion in natural
language format, using a sentimental analysis model.


title: A Problem of Bombieri on Univalent Functions

abstract:
  The famous Bieberbach Conjecture from 1916 on the coefficients of normalized
univalent functions defined in the unit disk that was finally proved by de
Branges some 70 years later, drifted many complex analysts attention to other
subjects. Those who continued to explore de Branges method and push it as far
as possible were not aware of where it may lead. Surprisingly enough, a paper
by X. H. Dong that fell in our hands contained a way to tackle one of the
problems of Bombieri on the behavior of the coefficients of univalent
functions. We shall give an account of the history of the problem and a revised
version of it.


title:
The faint source population at 15.7 GHz - III. A high-frequency study of
  HERGs and LERGs

abstract:
  A complete sample of 96 faint ($S > 0.5$ mJy) radio galaxies is selected from
the Tenth Cambridge (10C) survey at 15.7~GHz. Optical spectra are used to
classify 17 of the sources as high-excitation or low-excitation radio galaxies
(HERGs and LERGs respectively), for the remaining sources three other methods
are used; these are optical compactness, X-ray observations and mid-infrared
colour--colour diagrams. 32 sources are HERGs and 35 are LERGs while the
remaining 29 sources could not be classified. We find that the 10C HERGs tend
to have higher 15.7-GHz flux densities, flatter spectra, smaller linear sizes
and be found at higher redshifts than the LERGs. This suggests that the 10C
HERGs are more core dominated than the LERGs.
  Lower-frequency radio images, linear sizes and spectral indices are used to
classify the sources according to their radio morphology; 18 are Fanaroff and
Riley type I or II sources, a further 13 show some extended emission, and the
remaining 65 sources are compact and are referred to as FR0 sources. The FR0
sources are sub-divided into compact, steep-spectrum (CSS) sources (13 sources)
or GHz-peaked spectrum (GPS) sources (10 sources) with the remaining 42 in an
unclassified class. FR0 sources are more dominant in the subset of sources with
15.7-GHz flux densities $<$1 mJy, consistent with the previous result that the
fainter 10C sources have flatter radio spectra.
  The properties of the 10C sources are compared to the higher-flux density
Australia Telescope 20 GHz (AT20G) survey. The 10C sources are found at similar
redshifts to the AT20G sources but have lower luminosities. The nature of the
high-frequency selected objects change as flux density decreases; at high flux
densities the objects are primarily quasars, while at low flux densities radio
galaxies dominate.


title:
Controlled formation of an isolated miniband in bilayer graphene on an
  almost commensurate $\sqrt{3} \times \sqrt{3}$ substrate

abstract:
  We investigate theoretically the interplay between the effects of a
perpendicular electric field and incommensurability at the interface on the
electronic properties of a heterostructure of bilayer graphene and a
semiconducting substrate with a unit cell almost three times larger then that
of graphene. It is known that the former introduces an asymmetry in the
distribution of the electronic wave function between the layers and opens a
band gap in the electronic spectrum. The latter generates a long wavelength
periodic moir\'{e} perturbation of graphene electrons which couples states in
inequivalent graphene Brillouin zone corners and leads to the formation of
minibands. We show that, depending on the details of the moir\'{e}
perturbation, the miniband structure can be tuned from that with a single band
gap at the neutrality point and over-lapping minibands on the
conduction/valence band side to a situation where a single narrow miniband is
separated by gaps from the rest of the spectrum.


title:
Phase-controlled bistability of a dark soliton train in a polariton
  fluid

abstract:
  We use a one-dimensional polariton fluid in a semiconductor microcavity to
explore the rich nonlinear dynamics of counter-propagating interacting Bose
fluids. The intrinsically driven-dissipative nature of the polariton fluid
allows to use resonant pumping to impose a phase twist across the fluid. When
the polariton-polariton interaction energy becomes comparable to their kinetic
energy, linear interference fringes transform into a train of solitons. A novel
type of bistable behavior controlled by the phase twist across the fluid is
experimentally evidenced.


title:
On the equivalence between the Scheduled Relaxation Jacobi method and
  Richardson's non-stationary method

abstract:
  The Scheduled Relaxation Jacobi (SRJ) method is an extension of the classical
Jacobi iterative method to solve linear systems of equations ($Au=b$)
associated with elliptic problems. It inherits its robustness and accelerates
its convergence rate computing a set of $P$ relaxation factors that result from
a minimization problem. In a typical SRJ scheme, the former set of factors is
employed in cycles of $M$ consecutive iterations until a prescribed tolerance
is reached. We present the analytic form for the optimal set of relaxation
factors for the case in which all of them are different, and find that the
resulting algorithm is equivalent to a non-stationary generalized Richardson's
method. Our method to estimate the weights has the advantage that the explicit
computation of the maximum and minimum eigenvalues of the matrix $A$ is
replaced by the (much easier) calculation of the maximum and minimum
frequencies derived from a von Neumann analysis. This set of weights is also
optimal for the general problem, resulting in the fastest convergence of all
possible SRJ schemes for a given grid structure. We also show that with the set
of weights computed for the optimal SRJ scheme for a fixed cycle size it is
possible to estimate numerically the optimal value of the parameter $\omega$ in
the Successive Overtaxation (SOR) method in some cases. Finally, we demonstrate
with practical examples that our method also works very well for Poisson-like
problems in which a high-order discretization of the Laplacian operator is
employed. This is of interest since the former discretizations do not yield
consistently ordered $A$ matrices. Furthermore, the optimal SRJ schemes here
deduced, are advantageous over existing SOR implementations for high-order
discretizations of the Laplacian operator in as much as they do not need to
resort to multi-coloring schemes for their parallel implementation. (abridged)


title:
Comparison of Models of Fast Saturable Absorption in Passively
  Modelocked Lasers

abstract:
  Fast saturable absorbers (FSAs) play a critical role in stabilizing many
passively modelocked lasers. The most commonly used averaged model to study
these lasers is the Haus modelocking equation (HME) that includes a third-order
nonlinear FSA. However, it predicts a narrow region of stability that is
inconsistent with experiments. To better replicate the laser physics, averaged
laser models that include FSAs with higher-than-third-order nonlinearities have
been introduced. Here, we compare three common FSA models to each other and to
the HME using the recently-developed boundary tracking algorithms. The three
FSA models are the cubic-quintic model, the sinusoidal model, and the algebraic
model. We find that all three models predict the existence of a stable
high-energy solution that is not present in the HME and have a much larger
stable operating region. We also find that all three models predict
qualitatively similar stability diagrams. We conclude that averaged laser
models that include FSAs with higher-than-third-order nonlinearity should be
used when studying the stability of passively modelocked lasers.


title: Sampling on the Sphere by Mutually Orthogonal Subspaces

abstract:
  The purpose of this paper is twofold. First, we provide an optimal
$\Omega(\sqrt{n})$ bits lower bound for any two-way protocol for the Vector in
Subspace Communication Problem which is of bounded total rank. This result
complements Raz's $O(\sqrt{n})$ protocol, which has a simple variant of bounded
total rank. Second, we present a plausible mathematical conjecture on a measure
concentration phenomenon that implies an $\Omega(\sqrt{n})$ lower bound for a
general protocol. We prove the conjecture for the subclass of sets that depend
only on $O(\sqrt{n})$ directions.


title:
Nonideal Quantum Measurement Effects on the Switching Currents
  Distribution of Josephson Junctions

abstract:
  The quantum character of Josephson junctions is ordinarily revealed through
the analysis of the switching currents, i.e. the current at which a finite
voltage appears: A sharp rise of the voltage signals the passage (tunnel) from
a trapped state (the zero voltage solution) to a running state (the finite
voltage solution). In this context, we investigate the probability distribution
of the Josephson junctions switching current taking into account the effect of
the bias sweeping rate and introducing a simple nonideal quantum measurements
scheme. The measurements are modelled as repeated voltage samplings at discrete
time intervals, that is with repeated projections of the time dependent quantum
solutions on the static or the running states, to retrieve the probability
distribution of the switching currents. The distribution appears to be immune
of the quantum Zeno effect, and it is close to, but distinguishable from, the
Wentzel-Kramers-Brillouin approximation. For energy barriers comparable to the
quantum fundamental energy state and in the fast bias current ramp rate the
difference is neat, and remains sizeable in the asymptotic slow rate limit.
This behaviour is a consequence of the quantum character of the system that
confirms the presence of a backreaction of quantum measurements on the outcome
of mesoscopic Josephson junctions.


title:
On extreme points of measures which implement an isometric embedding of
  model spaces

abstract:
  In 1996 A. Alexandrov solved an isometric embedding problem for model spaces
$K_\Theta$ with an arbitrary inner function $\Theta$. We find all extreme
points of this convex set of measures in the case when $\Theta$ is a finite
Blaschke product, and obtain some partial results for generic inner functions.


title: Exploration of heterogeneous treatment effects via concave fusion

abstract:
  Understanding treatment heterogeneity is essential to the development of
precision medicine, which seeks to tailor medical treatments to subgroups of
patients with similar characteristics. One of the challenges to achieve this
goal is that we usually do not have a priori knowledge of the grouping
information of patients with respect to treatment. To address this problem, we
consider a heterogeneous regression model by assuming that the coefficient for
treatment variables are subject-dependent and belong to different subgroups
with unknown grouping information. We develop a concave fusion penalized method
for automatically estimating the grouping structure and the subgroup-specific
treatment effects, and derive an alternating direction method of multipliers
algorithm for its implementation. We also study the theoretical properties of
the proposed method and show that under suitable conditions there exists a
local minimizer that equals the oracle least squares estimator with a priori
knowledge of the true grouping information with high probability. This provides
theoretical support for making statistical inference about the
subgroup-specific treatment effects based on the proposed method. We evaluate
the performance of the proposed method by simulation studies and illustrate its
application by analyzing the data from the AIDS Clinical Trials Group Study.


title:
Streaming Algorithms For Computing Edit Distance Without Exploiting
  Suffix Trees

abstract:
  The edit distance is a way of quantifying how similar two strings are to one
another by counting the minimum number of character insertions, deletions, and
substitutions required to transform one string into the other.
  In this paper we study the computational problem of computing the edit
distance between a pair of strings where their distance is bounded by a
parameter $k\ll n$. We present two streaming algorithms for computing edit
distance: One runs in time $O(n+k^2)$ and the other $n+O(k^3)$. By writing
$n+O(k^3)$ we want to emphasize that the number of operations per an input
symbol is a small constant. In particular, the running time does not depend on
the alphabet size, and the algorithm should be easy to implement.
  Previously a streaming algorithm with running time $O(n+k^4)$ was given in
the paper by the current authors (STOC'16). The best off-line algorithm runs in
time $O(n+k^2)$ (Landau et al., 1998) which is known to be optimal under the
Strong Exponential Time Hypothesis.


title: Ultra-quantum turbulence in a quenched homogeneous Bose gas

abstract:
  Using the classical field method, we study numerically the characteristics
and decay of the turbulent tangle of superfluid vortices which is created in
the evolution of a Bose gas from highly nonequilibrium initial conditions. By
analysing the vortex line density, the energy spectrum and the velocity
correlation function, we determine that the turbulence resulting from this
effective thermal quench lacks the coherent structures and the Kolmogorov
scaling; these properties are typical of both ordinary classical fluids and of
superfluid helium when driven by grids or propellers. Instead, thermal quench
turbulence has properties akin to a random flow, more similar to another
turbulent regime called ultra-quantum turbulence which has been observed in
superfluid helium.


title: The effect of turbulent clustering on particle reactivity

abstract:
  The effect of turbulence on the heterogeneous (solid-fluid) reactions of
solid particles is studied numerically with Direct Numerical Simulations (DNS).
A simplified reaction system is used, where the solid-fluid reaction is
represented by a single isothermal reaction step. It is found that, due to the
clustering of particles by the isotropic turbulence, the overall reaction rate
is entirely controlled by the turbulence for large Damk\"ohler numbers. The
particle clustering significantly slows down the reaction rate for increasing
Damk\"ohler numbers which reaches an asymptotic limit that can be analytically
derived. This implies that the effect of turbulence on heterogeneously reacting
particles should be included in models that are used in CFD simulations of e.g.
char burnout in combustors or gasifiers. Such a model, based on the chemical
and turbulent time scales, is here proposed for the heterogeneous reaction rate
in the presence of turbulence.


title:
Emergent horizon, Hawking radiation and chaos in the collapsed polymer
  model of a black hole

abstract:
  We have proposed that the interior of a macroscopic Schwarzschild black hole
(BH) consists of highly excited, long, closed, interacting strings and, as
such, can be modeled as a collapsed polymer. It was previously shown that the
scaling relations of the collapsed-polymer model agree with those of the BH.
The current paper further substantiates this proposal with an investigation
into some of its dynamical consequences. In particular, we show that the model
predicts, without relying on gravitational effects, an emergent horizon. We
further show that the horizon fluctuates quantum mechanically as it should and
that the strength of the fluctuations is inversely proportional to the BH
entropy. It is then demonstrated that the emission of Hawking radiation is
realized microscopically by the quantum-induced escape of small pieces of
string, with the rate of escape and the energy per emitted piece both
parametrically matching the Hawking temperature. We also show, using standard
methods from statistical mechanics and chaos theory, how our model accounts for
some other known properties of BHs. These include the accepted results for the
scrambling time and the viscosity-to-entropy ratio, which in our model apply
not only at the horizon but throughout the BH interior.


title:
The model parameters of the mean light curves of the variable red giant
  stars in the near infrared colour-bands and compare them with the visual mean
  light curves

abstract:
  The observational data of the near infrared bands (H and K) have been used
for the modeling mean light curves. Also the visual observational data have
been fitted the same. The infrared and visual mean light curves were compared.
All parameters and Fourier-coefficients of the mean light curves were obtained.
The periodogram analysis of the variation of the brightness have been carried
out.


title: Universal Asymmetric Quantum Cloning Revisited

abstract:
  This paper revisits the universal asymmetric $1 \to 2$ quantum cloning
problem. We identify the symmetry properties of this optimisation problem,
giving us access to the optimal quantum cloning map. Furthermore, we use the
bipolar theorem, a famous method from convex analysis, to completely
characterise the set of achievable single quantum clone qualities using the
fidelity as our figure of merit; from this it is easier to give the optimal
cloning map and to quantify the quality tradeoff in universal asymmetric
quantum cloning. Additionally, it allows us to analytically specify the set of
achievable single quantum clone qualities using a range of different figures of
merit.


title:
Quantum limits on detection sensitivity of a linear detector with
  feedback

abstract:
  We show that the detection sensitivity of a linear detector is lower bounded
by some quantum limits. For the force detection, relevant for atomic force
microscopes, the lower bound is given by the so-called ultimate quantum limit.
For the displacement detection, relevant for detecting gravitational waves, a
generalized lower bound is obtained.


title:
Millimeter Wave Receiver Efficiency: A Comprehensive Comparison of
  Beamforming Schemes with Low Resolution ADCs

abstract:
  In this work, we study the achievable rate and the energy efficiency of
Analog, Hybrid and Digital Combining (AC, HC and DC) for millimeter wave (mmW)
receivers. We take into account the power consumption of all receiver
components, not just Analog-to-Digital Converters (ADC), determine some
practical limitations of beamforming in each architecture, and develop
performance analysis charts that enable comparison of different receivers
simultaneously in terms of two metrics, namely, Spectral Efficiency (SE) and
Energy Efficiency (EE). We present a multi-objective utility optimization
interpretation to find the best SE-EE weighted trade-off among AC, DC and HC
schemes. We consider an Additive Quantization Noise Model (AQNM) to evaluate
the achievable rates with low resolution ADCs. Our analysis shows that AC is
only advantageous if the channel rank is strictly one, the link has very low
SNR, or there is a very stringent low power constraint at the receiver.
Otherwise, we show that the usual claim that DC requires the highest power is
not universally valid. Rather, either DC or HC alternatively result in the
better SE vs EE trade-off depending strongly on the considered power
consumption characteristic values for each component of the mmW receiver.


title: Electron hydrodynamics dilemma: whirlpools or no whirlpools

abstract:
  In highly viscous electron systems such as, for example, high quality
graphene above liquid nitrogen temperature, a linear response to applied
electric current becomes essentially nonlocal, which can give rise to a number
of new and counterintuitive phenomena including negative nonlocal resistance
and current whirlpools. It has also been shown that, although both effects
originate from high electron viscosity, a negative voltage drop does not
principally require current backflow. In this work, we study the role of
geometry on viscous flow and show that confinement effects and relative
positions of injector and collector contacts play a pivotal role in the
occurrence of whirlpools. Certain geometries may exhibit backflow at
arbitrarily small values of the electron viscosity, whereas others require a
specific threshold value for whirlpools to emerge.


title: On Thompson's conjecture for alternating group of large degree

abstract:
  For a finite group $G$, let $N(G)$ denote the set of conjugacy class sizes of
$G$. We show that if every finite group $G$ with trivial center such that
$N(G)$ equals to $N(Alt_n)$, where $n>1361$ and at least one of numbers $n$ or
$n-1$ are decomposed into a sum of two primes, then $G\simeq Alt_n$.


title:
Topological invariants from quantum group
  $\mathcal{U}_{\xi}\mathfrak{sl}(2|1)$ at roots of unity

abstract:
  In this article we construct link invariants and 3-manifold invariants from
the quantum group associated with Lie superalgebra $\mathfrak{sl}(2|1)$. This
construction based on nilpotent irreducible finite dimensional representations
of quantum group $\mathcal{U}_{\xi}\mathfrak{sl}(2|1)$ where $\xi$ is a root of
unity of odd order. These constructions use the notion of modified trace and
relative $\mathit{G}$-modular category.


title: The new SOXS instrument for the ESO NTT

abstract:
  SOXS (Son Of X-Shooter) will be a unique spectroscopic facility for the
ESO-NTT 3.5-m telescope in La Silla (Chile), able to cover the optical/NIR band
(350-1750 nm). The design foresees a high-efficiency spectrograph with a
resolution-slit product of ~4,500, capable of simultaneously observing the
complete spectral range 350 - 1750 nm with a good sensitivity, with light
imaging capabilities in the visible band. This paper outlines the status of the
project.


title:
Learning Shallow Detection Cascades for Wearable Sensor-Based Mobile
  Health Applications

abstract:
  The field of mobile health aims to leverage recent advances in wearable
on-body sensing technology and smart phone computing capabilities to develop
systems that can monitor health states and deliver just-in-time adaptive
interventions. However, existing work has largely focused on analyzing
collected data in the off-line setting. In this paper, we propose a novel
approach to learning shallow detection cascades developed explicitly for use in
a real-time wearable-phone or wearable-phone-cloud systems. We apply our
approach to the problem of cigarette smoking detection from a combination of
wrist-worn actigraphy data and respiration chest band data using two and three
stage cascades.


title:
A transportable 40Ca+ single-ion clock with $7.7\times 10^{-17}$
  systematic uncertainty

abstract:
  A transportable optical clock refer to the $4s^2S_{1/2}-3d^2D_{5/2}$ electric
quadrupole transition at 729 nm of single $^{40}Ca^+$ trapped in mini Paul trap
has been developed. The physical system of $^{40}Ca^+$ optical clock is
re-engineered from a bulky and complex setup to an integration of two
subsystems: a compact single ion unit including ion trapping and detection
modules, and a compact laser unit including laser sources, beam distributor and
frequency reference modules. Apart from the electronics, the whole equipment
has been constructed within a volume of 0.54 $m^3$. The systematic fractional
uncertainty has been evaluated to be $7.7\times 10^{-17}$, and the Allan
deviation fits to be $2.3\times {10}^{-14}/\sqrt{\tau}$ by clock
self-comparison with a probe pulse time 20 ms.


title: Asking photons where they have been in plain language

abstract:
  The authors of Phys.Rev.Lett. \textbf{111}, 240402 (2013) conclude that "the
past of the photons is not represented by continuous trajectories". A simple
analysis by standard quantum mechanics shows that this claim is false.


title: Data as processes: introducing measurement data into CARMA models

abstract:
  Measurement data provides a precise and detailed description of components
within a complex system but it is rarely used directly as a component of a
system model. In this paper we introduce a model-based representation of
measurement data and use it together with modeller-defined components expressed
in the CARMA modelling language. We assess both liveness and safety properties
of these models with embedded data.


title: Fast ion swapping for quantum information processing

abstract:
  We demonstrate a SWAP gate between laser-cooled ions in a segmented microtrap
via fast physical swapping of the ion positions. This operation is used in
conjunction with qubit initialization, manipulation and readout, and with other
types of shuttling operations such as linear transport and crystal separation
and merging. Combining these operations, we perform quantum process tomography
of the SWAP gate, obtaining a mean process fidelity of 99.5(5)\%. The swap
operation is demonstrated with motional excitations below 0.05(1)~quanta for
all six collective modes of a two-ion crystal, for a process duration of
42~$\mu$s. Extending these techniques to three ions, we reverse the order of a
three-ion crystal and reconstruct the truth table for this operation, resulting
in a mean process fidelity of 99.96(13)\% in the logical basis.


title: Non-Gaussianity as a Particle Detector

abstract:
  We study the imprints of massive particles with spin on cosmological
correlators. Using the framework of the effective field theory of inflation, we
classify the couplings of these particles to the Goldstone boson of broken time
translations and the graviton. We show that it is possible to generate
observable non-Gaussianity within the regime of validity of the effective
theory, as long as the masses of the particles are close to the Hubble scale
and their interactions break the approximate conformal symmetry of the
inflationary background. We derive explicit shape functions for the scalar and
tensor bispectra that can serve as templates for future observational searches.


title:
Enhancing Students' Understanding of Scientific Equipment: Smartphones
  in the Laboratory

abstract:
  One of the oft-cited qualities sought after in a potential future engineering
employee is an analytical mind that is "continually examining things." In one
sense this examination is discouraged in an instructional laboratory employing
opaque black box data collection devices. Smartphones can be used to gather
such data but also - by their very nature- have the capability of removing the
veil of opacity so as to allow students to examine their operation at a very
fundamental level. By taking advantage of a smartphone's visualization
capabilities one can elucidate core aspects of its operation equally or perhaps
better than a mechanical model might. Through purposeful app and curricular
design based on student feedback, we avoid this commonly perceived pitfall of
electronic devices and encourage student examination of one such device, the
student's own smartphone.


title: A Unified Multicarrier Modulation Framework

abstract:
  Orthogonal frequency division multiplexing (OFDM) has been recently
recognized as inadequate to meet the increased requirements of the next
generation of communication systems. A number of alternative modulation
solutions, based on the use of filter banks, have thus been proposed and are
currently being considered as candidate waveforms for the envisaged air
interface of the future networks. A unified view of these schemes would largely
facilitate a systematic comparison of their pros and cons as well as the study
of methods for related signal processing problems. To this end, a generic
modulator is developed in this paper, following a structured matrix
formulation. With appropriate parameter settings, existing modulation schemes
can result as special cases. Three such popular examples are presented in
detail.


title: Do semantic parts emerge in Convolutional Neural Networks?

abstract:
  Semantic object parts can be useful for several visual recognition tasks.
Lately, these tasks have been addressed using Convolutional Neural Networks
(CNN), achieving outstanding results. In this work we study whether CNNs learn
semantic parts in their internal representation. We investigate the responses
of convolutional filters and try to associate their stimuli with semantic
parts. We perform two extensive quantitative analyses. First, we use
ground-truth part bounding-boxes from the PASCAL-Part dataset to determine how
many of those semantic parts emerge in the CNN. We explore this emergence for
different layers, network depths, and supervision levels. Second, we collect
human judgements in order to study what fraction of all filters systematically
fire on any semantic part, even if not annotated in PASCAL-Part. Moreover, we
explore several connections between discriminative power and semantics. We find
out which are the most discriminative filters for object recognition, and
analyze whether they respond to semantic parts or to other image patches. We
also investigate the other direction: we determine which semantic parts are the
most discriminative and whether they correspond to those parts emerging in the
network. This enables to gain an even deeper understanding of the role of
semantic parts in the network.


title: Generating Cycloidal Gears for 3D Printing

abstract:
  (Shortened version of abstract in article itself)
  This article describes an algorithm for producing, for any desired resolution
and any desired numbers of wheel and pinion teeth, polygonal approximations to
the shapes of a pair of cycloidal gears that mesh correctly. An Octave
implementation of the algorithm, mostly written in 2014, is included. The
Octave implementation contains a (crude, but evidently adequate, at least for
reasonable numbers of wheel and pinion teeth) solution of the problem of
iteratively finding the generating wheel angle corresponding to the tips of the
tooth addenda.
  However, this Octave implementation does not contain a good solution to the
problem of automatically determining the generating wheel angles required to
produce a polygon which approximates the curved addenda to a resolution
specified by the user. A proposed better solution to this problem, involving a
priority queue, is discussed.


title:
Small field models with gravitational wave signature supported by CMB
  data

abstract:
  We study scale dependence of the cosmic microwave background (CMB) power
spectrum in a class of small, single-field models of inflation which lead to a
high value of the tensor to scalar ratio. The inflaton potentials that we
consider are degree 5 polynomials, for which we precisely calculate the power
spectrum, and extract the cosmological parameters: the scalar index $n_s$, the
running of the scalar index $n_{\mathrm{run}}$ and the tensor to scalar ratio
$r$. We find that for non-vanishing $n_{\mathrm{run}}$ and for $r$ as small as
$r=0.001$, the precisely calculated values of $n_s$ and $n_{\mathrm{run}}$
deviate significantly from what the standard analytic treatment predicts. We
study in detail, and discuss the probable reasons for such deviations. As such,
all previously considered models (of this kind) are based upon inaccurate
assumptions. We scan the possible values of potential parameters for which the
cosmological parameters are within the allowed range by observations. The 5
parameter class is able to reproduce all of the allowed values of $n_s$ and
$n_{\mathrm{run}}$ for values of $r$ that are as high as 0.001. Subsequently
this study at once refutes previous such models built using the analytical
Stewart-Lyth term, and revives the small field brand, by building models that
do yield an appreciable $r$ while conforming to known CMB observables.


title:
Whitney regularity and Thom condition for families of non-isolated mixed
  singularities

abstract:
  We investigate the equisingularity question for $1$-parameter deformation
families of mixed polynomial functions $f_t(\mathbf{z},\bar{\mathbf{z}})$ from
the Newton polygon point of view. We show that if the members $f_t$ of the
family satisfy a number of elementary conditions, which can be easily described
in terms of the Newton polygon, then the corresponding family of mixed
hypersurfaces $f_t^{-1}(0)$ is Whitney equisingular (and hence topologically
equisingular) and satisfies the Thom condition.


title: A Statistical Mechanical Model for Mass Stability in the SHP Theory

abstract:
  We construct a model for a particle in the framework of the theory of
Stueckelberg, Horwitz and Piron (SHP) as an ensemble of events subject to the
laws of covariant classical equilibrium statistical mechanics. The canonical
and grand canonical emsembles are constructed without an a priori constraint on
the total mass of the system. We show that the total mass of the system,
corresponding to the mass of this particle, is determined by a chemical
potential. This model has the property that under perturbation, such as
collisions in the SHP theory for which the final asymptotic mass of an
elementary event is not constrained by the basic theory, the particle returns
to its equilibrium mass value. A mechanism similar to the Maxwell construction
for more than one equlibrium mass state may result in several possible masses
in the final state.


title: An exact solution for the Hawking effect in a dispersive fluid

abstract:
  We consider the wave equation for sound in a moving fluid with a fourth-order
anomalous dispersion relation. The velocity of the fluid is a linear function
of position, giving two points in the flow where the fluid velocity matches the
group velocity of low-frequency waves. We find the exact solution for wave
propagation in the flow. The scattering shows amplification of classical waves,
leading to spontaneous emission when the waves are quantized. In the
dispersionless limit the system corresponds to a 1+1-dimensional black-hole or
white-hole binary and there is a thermal spectrum of Hawking radiation from
each horizon. Dispersion changes the scattering coefficients so that the
quantum emission is no longer thermal. The scattering coefficients were
previously obtained by Busch and Parentani in a study of dispersive fields in
de Sitter space [Phys. Rev. D 86, 104033 (2012)]. Our results give further
details of the wave propagation in this exactly solvable case, where our focus
is on laboratory systems.


title: $H$-contact unit tangent sphere bundles of Riemannian manifolds

abstract:
  A contact metric manifold is said to be $H$-contact, if the characteristic
vector field is harmonic. We prove that the unit tangent bundle of a Riemannian
manifold $M$ equipped with the standard contact metric structure is $H$-contact
if and only if $M$ is $2$-stein.


title:
Measurement of exclusive $\gamma\gamma\rightarrow W^+W^-$ production and
  search for exclusive Higgs boson production in $pp$ collisions at $\sqrt{s} =
  8$ TeV using the ATLAS detector

abstract:
  Searches for exclusively produced $W$ boson pairs in the process
$pp(\gamma\gamma) \rightarrow pW^+W^-p$ and exclusively produced Higgs boson in
the process $pp(gg) \rightarrow pHp$ have been performed using
$e^{\pm}\mu^{\mp}$ final states. These measurements use 20.2 fb$^{-1}$ of $pp$
collisions collected by the ATLAS experiment at a center-of-mass energy
$\sqrt{s}=8$ TeV at the LHC. Exclusive production of $W^+W^-$ consistent with
the Standard Model prediction is found with 3.0$\sigma$ significance. The
exclusive $W^+W^-$ production cross-section is determined to be $\sigma
(\gamma\gamma\rightarrow W^{+}W^{-}\rightarrow e^{\pm}\mu^{\mp} X) = 6.9 \pm
2.2 (\mathrm{stat.}) \pm 1.4 (\mathrm{sys.})$ fb, in agreement with the
Standard Model prediction. Limits on anomalous quartic gauge couplings are set
at 95\% confidence-level as $-1.7 \times 10^{-6} < a_0^W/\Lambda^2 < 1.7 \times
10^{-6}$ GeV$^{-2}$and $-6.4 \times 10^{-6} < a_C^W/\Lambda^2 < 6.3 \times
10^{-6}$ GeV$^{-2}$. A 95\% confidence-level upper limit on the total
production cross-section for exclusive Higgs boson is set to 1.2 pb.


title: On Multi Poly-Bernoulli Polynomials

abstract:
  In this paper, we define multi poly-Bernoulli polynomials using multiple
polylogarithm and derive some properties parallel to those of poly-Bernoulli
polynomials. Furthermore, an explicit formula for certain Hurwitz-Lerch type
multi poly-Bernoulli polynomials is established using the $r$-Whitney numbers
of the second kind.


title: Strategies with Parallel Causes

abstract:
  In a distributed game we imagine a team Player engaging a team Opponent in a
distributed fashion. Such games and their strategies have been formalised in
concurrent games based on event structures. However there are limitations in
founding strategies on traditional event structures. Sometimes a probabilistic
distributed strategy relies on certain benign races where, intuitively, several
members of team Player may race each other to make a common move. Although
there are event structures which support such parallel causes, in which an
event is enabled in several compatible ways, they do not support an operation
of hiding central to the composition of strategies; nor do they support
probability adequately. An extension of traditional event structures is devised
which supports parallel causes and hiding, as well as the mix of probability
and nondeterminism needed to account for probabilistic distributed strategies.
The extension is tested in the construction of a bicategory of probabilistic
distributed strategies with parallel causes. The bicategory is rich in
operations relevant to probabilistic as well as deterministic parallel
programming.


title:
Analysis of Software Delivery Process Shortcomings and Architectural
  Pitfalls

abstract:
  This paper highlights the common pitfalls of overcomplicating the software
architecture, development and delivery process by examining two enterprise
level web application products built using Microsoft.Net framework. The aim of
this paper is to identify, discuss and analyze architectural, development and
deployment issues and learn lessons using real world examples from the chosen
software products as case studies.


title: The Impact of Lorentz Violation on the Klein Tunneling Effect

abstract:
  We discuss the impact of a tiny Lorentz-violating $b^\mu$ term on the one
dimensional motion of a Dirac particle scattering on a rectangular barrier. We
assume the experiment is performed in a particular inertial frame, where the
components of $b^\mu$ are assumed constants. The results show that
Lorentz-violation modification to the transmission rate depends on the observer
Lorentz nature of $b^\mu$. For a spacelike or lightlike $b^\mu$ the induced
resonant frequency shift depends on the polarization, while for timelike
$b^\mu$ there is essentially no modification.


title:
Calculation of Regge trajectories of strange resonances and
  identification of the K0*(800) as a non-ordinary meson

abstract:
  We review how the Regge trajectory of an elastic resonance can be obtained
just from its pole position and coupling, using a dispersive formalism. This
allows us to deal correctly with the finite widths of resonances in Regge
trajectories. In this way we can calculate the Regge trajectories for the
$K^*(892)$, $K_1(1400)$ and $K^*_0(1430)$, obtaining ordinary linear Regge
trajectories, expected for $q \bar q$ resonances. In contrast, for the
$K^*_0(800)$ meson, the resulting Regge trajectory is non-linear and with much
smaller slope, strongly supporting its non-ordinary nature.


title: Hydrodynamic limit equation for a lozenge tiling Glauber dynamics

abstract:
  We study a reversible continuous-time Markov dynamics on lozenge tilings of
the plane, introduced by Luby et al. Single updates consist in concatenations
of $n$ elementary lozenge rotations at adjacent vertices. The dynamics can also
be seen as a reversible stochastic interface evolution. When the update rate is
chosen proportional to $1/n$, the dynamics is known to enjoy especially nice
features: a certain Hamming distance between configurations contracts with time
on average and the relaxation time of the Markov chain is diffusive, growing
like the square of the diameter of the system. Here, we present another
remarkable feature of this dynamics, namely we derive, in the diffusive time
scale, a fully explicit hydrodynamic limit equation for the height function (in
the form of a non-linear parabolic PDE). While this equation cannot be written
as a gradient flow w.r.t. a surface energy functional, it has nice analytic
properties, for instance it contracts the $\mathbb L^2$ distance between
solutions. The mobility coefficient $\mu$ in the equation has non-trivial but
explicit dependence on the interface slope and, interestingly, is directly
related to the system's surface free energy. The derivation of the hydrodynamic
limit is not fully rigorous, in that it relies on an unproven assumption of
local equilibrium.


title: Nonparametric Depth and Quantile Regression for Functional Data

abstract:
  We investigate nonparametric regression methods based on spatial depth and
quantiles when the response and the covariate are both functions. As in
classical quantile regression for finite dimensional data, regression
techniques developed here provide insight into the influence of the functional
covariate on different parts, like the center as well as the tails, of the
conditional distribution of the functional response. Depth and quantile based
nonparametric regressions are useful to detect heteroscedasticity in functional
regression. We derive the asymptotic behaviour of nonparametric depth and
quantile regression estimates, which depend on the small ball probabilities in
the covariate space. Our nonparametric regression procedures are used to
analyse a dataset about the influence of per capita GDP on saving rates for 125
countries, and another dataset on the effects of per capita net disposable
income on the sale of cigarettes in some states in the US.


title:
Stability and Fourier-series periodic solution in the binary stellar
  systems

abstract:
  In this paper, we use the restricted three body problem in the binary stellar
systems, taking photogravitational effects of both the stars. The aim of this
study is to investigate the motion of the infinitesimal mass in the vicinity of
the Lagrangian points. We have computed semi-analytical expressions for the
locations of the collinear points with the help of the perturbation technique.
The stability of the triangular points is studied in stellar binary systems
Kepler-34, Kepler-35, Kepler-413 and Kepler-16. To investigate the stability of
the triangular points, we have obtained the expressions for critical mass which
depends on the radiation of both primaries. Fourier-series method is applied to
obtain periodic orbits of the infinitesimal mass around triangular points in
binary stellar systems. We have obtained Fourier expansions of the periodic
orbits around triangular points upto third order terms. A comparison is made
between periodic orbits obtained by Fourier-series method and with Runge-Kutta
integration of fourth order.


title: Herschel Observations of Dusty Debris Disks

abstract:
  We present results from two Herschel observing programs using the
Photodetector Array Camera and Spectrometer. During three separate campaigns,
we obtained Herschel data for 24 stars at 70, 100, and 160 microns. We chose
stars that were already known or suspected to have circumstellar dust based on
excess infrared emission previously measured with IRAS or Spitzer, and used
Herschel to examine long-wavelength properties of the dust. Fifteen stars were
found to be uncontaminated by background sources, and possess infrared emission
most likely due to a circumstellar debris disk. We analyzed the properties of
these debris disks to better understand the physical mechanisms responsible for
dust production and removal. Seven targets were spatially resolved in the
Herschel images. Based on fits to their spectral energy distributions, nine
disks appear to have two temperature components. Of these nine, in three cases,
the warmer dust component is likely the result of a transient process rather
than a steady state collisional cascade. The dust belts at four stars are
likely stirred by an unseen planet, and merit further investigation.


title:
Agnostic conservative down-sampling for optimizing statistical
  representations and PIC simulations

abstract:
  In particle-in-cell simulations and some other statistical computations, the
representation of modelled distributions with tracked macro-particles can
become locally excessive. Merging or resampling dense clusters or
highly-populated phase space volumes may, however, remove or affect small-scale
peculiarities in the modelled distribution or cause local changes of conserved
quantities, such as energy and momenta. This may lead to additional noise,
reduced accuracy or even unphysical effects. Here we describe a probabilistic
algorithm for reducing the number of macro-particles in such clusters or
volumes so that all the distribution functions are not affected on average and
an arbitrary number of conservation laws, distribution central moments and
contributions to the grid quantities (such as charge and current density) are
preserved.


title:
Minimal realization of $\ell$-conformal Galilei algebra, Pais-Uhlenbeck
  oscillators and their deformation

abstract:
  We present the minimal realization of the $\ell$-conformal Galilei group in
2+1 dimensions on a single complex field. The simplest Lagrangians yield the
complex Pais-Uhlenbeck oscillator equations. We introduce a minimal deformation
of the $\ell$=1/2 conformal Galilei (a.k.a. Schr\"odinger) algebra and
construct the corresponding invariant actions. Based on a new realization of
the d=1 conformal group, we find a massive extension of the near-horizon
Kerr-dS/AdS metric.


title: Imaging the water-snow line during a protostellar outburst

abstract:
  A snow-line is the region of a protoplanetary disk at which a major volatile,
such as water or carbon monoxide, reaches its condensation temperature.
Snow-lines play a crucial role in disk evolution by promoting the rapid growth
of ice-covered grains. Signatures of the carbon monoxide snow-line (at
temperatures of around 20 kelvin) have recently been imaged in the disks
surrounding the pre-main-sequence stars TW Hydra and HD163296, at distances of
about 30 astronomical units (au) from the star. But the water snow-line of a
protoplanetary disk (at temperatures of more than 100 kelvin) has not hitherto
been seen, as it generally lies very close to the star (less than 5 au away for
solar-type stars). Water-ice is important because it regulates the efficiency
of dust and planetesimal coagulation, and the formation of comets, ice giants
and the cores of gas giants. Here we report ALMA images at 0.03-arcsec
resolution (12 au) of the protoplanetary disk around V883 Ori, a protostar of
1.3 solar masses that is undergoing an outburst in luminosity arising from a
temporary increase in the accretion rate. We find an intensity break
corresponding to an abrupt change in the optical depth at about 42 au, where
the elevated disk temperature approaches the condensation point of water, from
which we conclude that the outburst has moved the water snow-line. The spectral
behaviour across the snow-line confirms recent model predictions: dust
fragmentation and the inhibition of grain growth at higher temperatures results
in soaring grain number densities and optical depths. As most planetary systems
are expected to experience outbursts caused by accretion during their formation
our results imply that highly dynamical water snow-lines must be considered
when developing models of disk evolution and planet formation.


title:
Complementarity Between Hyperkamiokande and DUNE in Determining Neutrino
  Oscillation Parameters

abstract:
  In this work we investigate the sensitivity to the neutrino mass hierarchy,
the octant of the mixing angle $\theta_{23}$ and the CP phase $\delta_{CP}$ in
the future long-baseline experiments T2HK and DUNE as well as in the
atmospheric neutrino observation at Hyperkamiokande (HK). We show for the first
time that the sensitivity is enhanced greatly if we combine these three
experiments. Our results show that the hierarchy sensitivity of both T2HK and
HK are limited due to the presence of parameter degeneracy. But this degeneracy
is removed when T2HK and HK are added together. With T2HK+HK (DUNE), the
neutrino mass hierarchy can be determined at least at $ 5 \sigma$ (8 $\sigma$)
C.L. for any value of true $\delta_{CP}$. With T2HK+HK+DUNE the significance of
the mass hierarchy increases to almost 15 $\sigma$ for the unfavorable value of
$\delta_{CP}$. For these combined setup, octant can be resolved except
$43.5^\circ < \theta_{23} < 48^\circ$ at $5\sigma$ C.L for both the hierarchies
irrespective of the value of $\delta_{CP}$. The significance of CP violation is
around 10 $\sigma$ C.L. for $\delta_{CP} \sim \pm 90^\circ$. Apart from that
these combined facility has the capability to discover CP violation for at
least $68\%$ fraction of the true $\delta_{CP}$ values at $5 \sigma$ for any
value of true $\theta_{23}$. We also find that, with combination of all these
three, the precision of $\Delta m^2_{{\rm eff}}$, $\sin^2\theta_{23}$ and
$\delta_{CP}$ becomes 0.3%, 2% and 20% respectively. We also clarify how the
octant degeneracy occurs in the HK atmospheric neutrino experiment.


title:
Electronic properties of emergent topological defects in chiral $p$-wave
  superconductivity

abstract:
  Chiral $p$-wave superconductors in applied magnetic field can exhibit more
complex topological defects than just conventional superconducting vortices,
due to the two-component order parameter (OP) and the broken time-reversal
symmetry. We investigate the electronic properties of those exotic states, some
of which contain clusters of one-component vortices in chiral components of the
OP and/or exhibit skyrmionic character in the \textit{relative} OP space, all
obtained as a self-consistent solution of the microscopic Bogoliubov-de Gennes
equations. We reveal the link between the local density of states (LDOS) of the
novel topological states and the behavior of the chiral domain wall between the
OP components, enabling direct identification of those states in scanning
tunneling microscopy. For example, a skyrmion always contains a closed chiral
domain wall, which is found to be mapped exactly by zero-bias peaks in LDOS.
Moreover, the LDOS exhibits electron-hole asymmetry, which is different from
the LDOS of conventional vortex states with the same vorticity. Finally, we
present the magnetic field and temperature dependence of the properties of a
skyrmion, indicating that this topological defect can be surprisingly large in
size, and can be pinned by an artificially indented non-superconducting closed
path in the sample. These features are expected to facilitate the experimental
observation of skyrmionic states, thereby enabling experimental verification of
chirality in emerging superconducting materials.


title: Distributed Games and Strategies

abstract:
  A summary of work on distributed games and strategies done within the first
three years of the ERC project ECSYM is presented.


title:
Forward dispersion relations for pion-kaon scattering and the K*0(800)
  resonance

abstract:
  We review our recent analysis of $\pi K$ scattering data in terms of forward
dispersion relations, and also present the parameters of the strange
resonances. This work consists of fits to the data that are constrained to
satisfy analyticity requirements. The method yields a set of simple and
consistent parameterizations that are compatible with forward dispersion
relations up to 1.6 GeV while still describing the data. We also obtain the
pole parameters of the $K^*_0(800)$ and the $K^*(892)$ resonances.


title:
Wiedemann-Franz-type relation between shot noise and thermal conduction
  of Majorana surface states in a three-dimensional topological superconductor

abstract:
  We compare the thermal conductance $G_{\rm thermal}$ (at temperature $T$) and
the electrical shot noise power $P_{\rm shot}$ (at bias voltage $V\gg k_{\rm
B}T/e$) of Majorana fermions on the two-dimensional surface of a
three-dimensional topological superconductor. We present analytical and
numerical calculations to demonstrate that, for a local coupling between the
superconductor and metal contacts, $G_{\rm thermal}/P_{\rm shot}= {\cal L}T/eV$
(with ${\cal L}$ the Lorenz number). This relation is ensured by the
combination of electron-hole and time-reversal symmetries, irrespective of the
microscopics of the surface Hamiltonian, and provides for a purely electrical
way to detect the charge-neutral Majorana surface states. A surface of aspect
ratio $W/L\gg 1$ has the universal shot-noise power $P_{\rm shot}=(W/L)\times
(e^2/h)\times (eV/2\pi)$


title: Twistor methods for AdS$_5$

abstract:
  We consider the application of twistor theory to five-dimensional anti-de
Sitter space. The twistor space of AdS$_5$ is the same as the ambitwistor space
of the four-dimensional conformal boundary; the geometry of this correspondence
is reviewed for both the bulk and boundary. A Penrose transform allows us to
describe free bulk fields, with or without mass, in terms of data on twistor
space. Explicit representatives for the bulk-to-boundary propagators of scalars
and spinors are constructed, along with twistor action functionals for the free
theories. Evaluating these twistor actions on bulk-to-boundary propagators is
shown to produce the correct two-point functions.


title: Shot Range and High Order Correlations in Proteins

abstract:
  The main chain dihedral angles play an important role to decide the protein
conformation. The native states of a protein can be regard as an ensemble of a
lot of similar conformations, in different conformations the main chain
dihedral angles vary in a certain range. Each dihedral angle value can be
described as a distribution, but only using the distribution can't describe the
real conformation space. The reason is that the dihedral angle has correlation
with others, especially the neighbor dihedral angles in primary sequence. In
our study we analysis extensive molecular dynamics (MD) simulation trajectories
of eleven proteins with different sizes and folds, we found that in stable
second structure the correlations only exist between the dihedrals near to each
other in primary sequence, long range correlations are rare. But in unstable
structures (loop) long range correlations exist. Further we observed some
characteristics of the short range correlations in different second structures
({\alpha}-helix, {\beta}-sheet) and we found that we can approximate good high
order dihedral angle distribution good only use three order distribution in
stable second structure which illustrates that high order correlations (over
three order) is small in stable second structure.


title:
Dynamic recursive tree-based partitioning for malignant melanoma
  identification in skin lesion dermoscopic images

abstract:
  In this paper, multivalued data or multiple values variables are defined.
They are typical when there is some intrinsic uncertainty in data production,
as the result of imprecise measuring instruments, such as in image recognition,
in human judgments and so on. \noindent So far, contributions in symbolic data
analysis literature provide data preprocessing criteria allowing for the use of
standard methods such as factorial analysis, clustering, discriminant analysis,
tree-based methods. As an alternative, this paper introduces a methodology for
supervised classification, the so-called Dynamic CLASSification TREE (D-CLASS
TREE), dealing simultaneously with both standard and multivalued data as well.
For that, an innovative partitioning criterion with a tree-growing algorithm
will be defined. Main result is a dynamic tree structure characterized by the
simultaneous presence of binary and ternary partitions. A real world case study
will be considered to show the advantages of the proposed methodology and main
issues of the interpretation of the final results. A comparative study with
other approaches dealing with the same types of data will be also shown.
D-CLASS TREE outperforms its competitors in terms of accuracy, which is a
fundamental aspect for predictive learning.


title:
AudioPairBank: Towards A Large-Scale Tag-Pair-Based Audio Content
  Analysis

abstract:
  Recently, sound recognition has been used to identify sounds, such as car and
river. However, sounds have nuances that may be better described by
adjective-noun pairs such as slow car, and verb-noun pairs such as flying
insects, which are under explored. Therefore, in this work we investigate the
relation between audio content and both adjective-noun pairs and verb-noun
pairs. Due to the lack of datasets with these kinds of annotations, we
collected and processed the AudioPairBank corpus consisting of a combined total
of 1,123 pairs and over 33,000 audio files. One contribution is the previously
unavailable documentation of the challenges and implications of collecting
audio recordings with these type of labels. A second contribution is to show
the degree of correlation between the audio content and the labels through
sound recognition experiments, which yielded results of 70% accuracy, hence
also providing a performance benchmark. The results and study in this paper
encourage further exploration of the nuances in audio and are meant to
complement similar research performed on images and text in multimedia
analysis.


title:
A study of the lunisolar secular resonance
  $2\dot{\omega}+\dot{\Omega}=0$

abstract:
  The dynamics of small bodies around the Earth has gained a renewed interest,
since the awareness of the problems that space debris can cause in the nearby
future. A relevant role in space debris is played by lunisolar secular
resonances, which might contribute to an increase of the orbital elements,
typically of the eccentricity. We concentrate our attention on the lunisolar
secular resonance described by the relation $2\dot{\omega}+\dot{\Omega}=0$,
where $\omega$ and $\Omega$ denote the argument of perigee and the longitude of
the ascending node of the space debris. We introduce three different models
with increasing complexity. We show that the growth in eccentricity, as
observed in space debris located in the MEO region at the inclination about
equal to $56^\circ$, can be explained as a natural effect of the secular
resonance $2\dot{\omega}+\dot{\Omega}=0$, while the chaotic variations of the
orbital parameters are the result of interaction and overlapping of nearby
resonances.


title:
Fundamental properties of Kepler and CoRoT targets: III. Tuning scaling
  relations using the first adiabatic exponent

abstract:
  So called scaling relations have the potential to reveal the mass and radius
of solar-like oscillating stars, based on oscillation frequencies. In
derivation of these relations, it is assumed that the first adiabatic exponent
at the surface (Gamma_1s) of such stars is constant. However, by constructing
interior models for the mass range 0.8-1.6 Msun, we show that Gamma_1s is not
constant at stellar surfaces for the effective temperature range with which we
deal. Furthermore, the well-known relation between large separation and mean
density also depends on Gamma_1s. Such knowledge is the basis for our aim of
modifying scaling relations. There are significant differences between masses
and radii found from modified and conventional scaling relations. However,
comparison of predictions of these relations with the non-asteroseismic
observations of Procyon A reveals that new scaling relations are effective in
determining the mass and radius of stars. In the present study, solar-like
oscillation frequencies of 89 target stars (mostly Kepler and CoRoT) were
analysed. As well as two new reference frequencies (nu_min1 and nu_min2) found
in the spacing of solar-like oscillation frequencies of stellar interior
models, we also take into account nu_min0. In addition to the frequency of
maximum amplitude, these frequencies have very strong diagnostic potential for
determination of fundamental properties. The present study involves the
application of derived relations from the models to the solar-like oscillating
stars, and computes their effective temperatures using purely asteroseismic
methods. There are in general very close agreements between effective
temperatures from asteroseismic and non-asteroseismic (spectral and
photometric) methods. For the Sun and Procyon A, for example, the agreement is
almost total.


title: Andr\'e-Oort for a Nonholomorphic Modular Function

abstract:
  The modular case of the Andr\'e-Oort Conjecture is a theorem of Andre and
Pila, having at its heart the well-known modular function j. I give an overview
of two other `nonclassical' classes of modular function, namely the
quasimodular (QM) and almost holomorphic modular (AHM) functions. These are
perhaps less well-known than j, but have been studied by various authors
including for example Masser, Shimura and Zagier. It turns out to be sufficient
to focus on a particular QM function $\chi$ and its dual AHM function $\chi^*$,
since these generate the relevant fields. After discussing some of the
properties of these functions, I go on to prove some Ax-Lindemann results for
$\chi$ and $\chi^*$. I then combine these with a fairly standard method of
o-minimality and point counting to prove the central result of the paper; a
natural analogue of the modular Andr\'e-Oort conjecture for the function
$\chi^*$.


title: Ultrastrong coupling dynamics with a transmon qubit

abstract:
  The interaction of light and matter is often described by the exchange of
single excitations. When the coupling strength is a significant fraction of the
system frequencies, the number of excitations are no longer preserved and that
simple picture breaks down. This regime is known as the ultrastrong coupling
regime and is characterized by non-trivial light-matter eigenstates and complex
dynamics. In this work, we propose to use a an array Josephson junctions to
increase the impedance of the light mode enabling ultrastrong coupling to a
transmon qubit. We show that the resulting dynamics can be generated and probed
by taking advantage of the multi-mode structure of the junction array. This
proposal relies on the frequency tunability of the transmon and, crucially, on
the use of a low frequency mode of the array, which allows for non-adiabatic
changes of the ground state.


title:
Evidence for quasi-periodic oscillations in the optical polarization of
  the blazar PKS 2155-304

abstract:
  Evidence for the presence of quasi-periodic oscillations (QPOs) in the
optical polarization of the blazar PKS 2155-304, during a period of enhanced
gamma-ray brightness, is presented. The periodogram of the polarized flux
revealed the existence of a prominent peak at $T\sim 13$ min, detected at
>99.7% significance, and $T\sim 30$ min, which was nominally significant at
>99%. This is the first evidence of QPOs in the polarization of an active
galactic nucleus, potentially opening up a new avenue of studying this
phenomenon.


title: Critical Drying of Liquids

abstract:
  We report a detailed simulation and classical density functional theory study
of the drying transition in a realistic model fluid at a smooth substrate. This
transition (in which the contact angle $\theta\to 180^\circ$) is shown to be
critical for both short ranged and long-ranged substrate-fluid interaction
potentials. In the latter case critical drying occurs at exactly zero
attractive substrate strength. This observation permits the accurate
elucidation of the character of the transition via a finite-size scaling
analysis of the density probability function. We find that the critical
exponent $\nu_\parallel$ that controls the parallel correlation length, i.e.
the extent of vapor bubbles at the wall, is over twice as large as predicted by
mean field and renormalization group calculations. We suggest a reason for the
discrepancy. Our findings shed new light on fluctuation phenomena in fluids
near hydrophobic and solvophobic interfaces.