title:
LHC limits on KK-parity non-conservation in the strong sector of
  universal extra-dimension models

abstract:
  In five-dimensional universal extra-dimensional models compactified on an
$S^1/Z_2$ orbifold four-dimensional kinetic terms are allowed at the two fixed
points. If these terms are unequal then Kaluza-Klein (KK) parity is broken.
Within such a framework we consider resonant production of the n = 1 KK-gluon
at the Large Hadron Collider and its subsequent decay to $t\bar{t}$, where both
production and decay are KK-parity non-conserving. We use, for the first time,
the exclusion data for a $t\bar{t}$ resonance obtained by the ATLAS
collaboration to limit the mass ranges of quark and gluon excitations of the
KK-parity-violating model which are found to be in the ballpark of 900 GeV.


title:
Measuring general relativity effects in a terrestrial lab by means of
  laser gyroscopes

abstract:
  GINGER is a proposed tridimensional array of laser gyroscopes with the aim of
measuring the Lense-Thirring effect, predicted by the General Relativity
theory, in a terrestrial laboratory environment. We discuss the required
accuracy, the methods to achieve it, and the preliminary experimental work in
this direction.


title: Angle-resolved time delay in photoemission of neon

abstract:
  We investigate theoretically the relative time delay of photoelectrons
originating from the different subshells (2s and 2p) of neon. This quantity was
measured via attosecond streaking and studied theoretically by Schultze et al.
[Science 328, 1658 (2010)]. A substantial discrepancy was found between the
measured and the calculated values of the relative time delay. Several
theoretical studies has been put forward to resolve this issue, e.g. by
including correlation effects. In the present paper we explore the directional
dependence of the photoelectron emission and the consequences for the inferred
time delay. Our quantum mechanical calculations for an electron subject to
laser fields and an effective single particle potential show that the time
delay is indeed strongly angular dependent. Compared to strict forward emission
we find that accounting for emission within a cone of 45 deg aperture, leads to
a substantially increase of the relative time delay.


title:
Neural Avalanches at the Critical Point between Replay and Non-Replay of
  Spatiotemporal Patterns

abstract:
  We model spontaneous cortical activity with a network of coupled spiking
units, in which multiple spatio-temporal patterns are stored as dynamical
attractors. We introduce an order parameter, which measures the overlap
(similarity) between the activity of the network and the stored patterns. We
find that, depending on the excitability of the network, different working
regimes are possible. For high excitability, the dynamical attractors are
stable, and a collective activity that replays one of the stored patterns
emerges spontaneously, while for low excitability, no replay is induced.
Between these two regimes, there is a critical region in which the dynamical
attractors are unstable, and intermittent short replays are induced by noise.
At the critical spiking threshold, the order parameter goes from zero to one,
and its fluctuations are maximized, as expected for a phase transition (and as
observed in recent experimental results in the brain). Notably, in this
critical region, the avalanche size and duration distributions follow power
laws. Critical exponents are consistent with a scaling relationship observed
recently in neural avalanches measurements. In conclusion, our simple model
suggests that avalanche power laws in cortical spontaneous activity may be the
effect of a network at the critical point between the replay and non-replay of
spatio-temporal patterns.


title: Boundary reconstruction for the broken ray transform

abstract:
  We reduce boundary determination of an unknown function and its normal
derivatives from the (possibly weighted and attenuated) broken ray data to the
injectivity of certain geodesic ray transforms on the boundary. For
determination of the values of the function itself we obtain the usual geodesic
ray transform, but for derivatives this transform has to be weighted by powers
of the second fundamental form. The problem studied here is related to
Calder\'on's problem with partial data.


title:
Low-Complexity Interactive Algorithms for Synchronization from
  Deletions, Insertions, and Substitutions

abstract:
  Consider two remote nodes having binary sequences $X$ and $Y$, respectively.
$Y$ is an edited version of ${X}$, where the editing involves random deletions,
insertions, and substitutions, possibly in bursts. The goal is for the node
with $Y$ to reconstruct $X$ with minimal exchange of information over a
noiseless link. The communication is measured in terms of both the total number
of bits exchanged and the number of interactive rounds of communication.
  This paper focuses on the setting where the number of edits is
$o(\tfrac{n}{\log n})$, where $n$ is the length of $X$. We first consider the
case where the edits are a mixture of insertions and deletions (indels), and
propose an interactive synchronization algorithm with near-optimal
communication rate and average computational complexity of $O(n)$ arithmetic
operations. The algorithm uses interaction to efficiently split the source
sequence into substrings containing exactly one deletion or insertion. Each of
these substrings is then synchronized using an optimal one-way synchronization
code based on the single-deletion correcting channel codes of Varshamov and
Tenengolts (VT codes).
  We then build on this synchronization algorithm in three different ways.
First, it is modified to work with a single round of interaction. The reduction
in the number of rounds comes at the expense of higher communication, which is
quantified. Next, we present an extension to the practically important case
where the insertions and deletions may occur in (potentially large) bursts.
Finally, we show how to synchronize the sources to within a target Hamming
distance. This feature can be used to differentiate between substitution and
indel edits. In addition to theoretical performance bounds, we provide several
validating simulation results for the proposed algorithms.


title:
Non-Supersymmetric Brane Configurations, Seiberg Duality and Dynamical
  Symmetry Breaking

abstract:
  We consider type IIA brane configurations, similar to those that realize
SO(2N) supersymmetric QCD, that include orientifold planes and anti-branes.
Such brane configurations lead to Sp(2N) field theories that become
supersymmetric in the large-N limit and break supersymmetry upon the inclusion
of 1/N corrections. We argue that this class of field theories admit Seiberg
duality and interpret the potential between branes and orientifolds as field
theory phenomena. In particular we find in the magnetic theory a meson
potential that leads to dynamical symmetry breaking and a meson condensate
similar to the anticipated quark condensate in QCD.


title: Codebook-Based Opportunistic Interference Alignment

abstract:
  Opportunistic interference alignment (OIA) asymptotically achieves the
optimal degrees-of-freedom (DoF) in interfering multiple-access channels
(IMACs) in a distributed fashion, as a certain user scaling condition is
satisfied. For the multiple-input multiple-output IMAC, it was shown that the
singular value decomposition (SVD)-based beamforming at the users fundamentally
reduces the user scaling condition required to achieve any target DoF compared
to that for the single-inputmultiple-output IMAC. In this paper, we tackle two
practical challenges of the existing SVD-based OIA: 1) the need of full
feedforward of the selected users' beamforming weight vectors and 2) a low rate
achieved based on the exiting zero-forcing (ZF) receiver. We first propose a
codebook-based OIA, in which the weight vectors are chosen from a pre-defined
codebook with a finite size so that information of the weight vectors can be
sent to the belonging BS with limited feedforward. We derive the codebook size
required to achieve the same user scaling condition as the SVD-based OIA case
for both Grassmannian and random codebooks. Surprisingly, it is shown that the
derived codebook size is the same for the two considered codebook approaches.
Second, we take into account an enhanced receiver at the base stations (BSs) in
pursuit of improving the achievable rate based on the ZF receiver. Assuming no
collaboration between the BSs, the interfering links between a BS and the
selected users in neighboring cells are difficult to be acquired at the
belonging BS. We propose the use of a simple minimum Euclidean distance
receiver operating with no information of the interfering links. With the help
of the OIA, we show that this new receiver asymptotically achieves the channel
capacity as the number of users increases.


title:
Far-field mapping of the longitudinal magnetic and electric optical
  fields

abstract:
  In this letter, we demonstrate the experimental mapping of the longitudinal
magnetic and electric optical fields with a standard scanning microscope that
involves a high numerical aperture far-field objective. The imaging concept
relies upon the insertion of an azimuthal or a radial polarizer within the
detection path of the microscope which acts as an optical electromagnetic
filter aimed at transmitting selectively to the detector the signal from the
magnetic or electric longitudinal fields present in the detection volume,
respectively. The resulting system is thus versatile, non invasive, of high
resolution, and shows high detection efficiencies. Magnetic optical properties
of physical and biological micro and nano-structures may thus be revealed with
a far-field microscope.


title:
Status of the accretion flow solution in the Golden Jubilee year of the
  discovery of extra-solar X-ray Sources

abstract:
  Fifty years have just passed since the first discovery of the extra-solar
X-ray sources by Giacconi and his team which we know today to be some stellar
mass black holes. By 1973, not only a catalog of these enigmatic objects were
made, and their spectra were obtained. Today, forty years have passed since the
revolutionary idea of the thin, axisymmetric, Keplerian, disk model by Shakura
and Sunyaev was published. Yet, the complete predictability of their radiative
properties remains as illusive as ever. The only available and self-consistent
solution to date is the generalized viscous transonic flow solutions where both
heating and cooling effects are included. I demonstrate that the latest
`Avatar' of the accretion/outflow picture, the Generalized Two Component
Advective Flow (GTCAF), is capable of explaining almost all the black hole
observational results, when the results of the time dependent simulation of
viscous and radiative processes are also taken into consideration. I also
discuss the problems with predictability and argue that understanding
companion's behaviour in terms of its habit of mass loss, ellipticity of its
orbit, magnetic properties, etc. is extremely important for the prediction of
emission properties of the accretion flow.


title: Step-Indexed Relational Reasoning for Countable Nondeterminism

abstract:
  Programming languages with countable nondeterministic choice are
computationally interesting since countable nondeterminism arises when modeling
fairness for concurrent systems. Because countable choice introduces
non-continuous behaviour, it is well-known that developing semantic models for
programming languages with countable nondeterminism is challenging. We present
a step-indexed logical relations model of a higher-order functional programming
language with countable nondeterminism and demonstrate how it can be used to
reason about contextually defined may- and must-equivalence. In earlier
step-indexed models, the indices have been drawn from {\omega}. Here the
step-indexed relations for must-equivalence are indexed over an ordinal greater
than {\omega}.


title: Certain properties of the power graph associated with a finite group

abstract:
  There are a variety of ways to associate directed or undirected graphs to a
group. It may be interesting to investigate the relations between the structure
of these graphs and characterizing certain properties of the group in terms of
some properties of the associated graph. The power graph $\mathcal{P}(G)$ of a
group $G$ is a simple graph whose vertex-set is $G$ and two vertices $x$ and
$y$ in $G$ are adjacent if and only if $y=x^m$ or $x=y^m$ for some positive
integer $m$. We also pay attention to the subgraph $\mathcal{P}^\ast(G)$ of
$\mathcal{P}(G)$ which is obtained by deleting the vertex 1 (the identity
element of $G$). In the present paper, we first investigate some properties of
the power graph $\mathcal{P}(G)$ and the subgraph $\mathcal{P}^\ast(G)$. We
next prove that many of finite groups such as finite simple groups, symmetric
groups and the automorphism groups of sporadic simple groups can be uniquely
determined by their power graphs among all finite groups. We have also
determined up to isomorphism the structure of any finite group $G$ such that
the graph $\mathcal{P}^\ast(G)$ is a strongly regular graph, a bipartite graph,
a planar graph or an Eulerian graph. Finally, we obtained some infinite
families of finite groups such that the graph $\mathcal{P}^\ast(G)$ containing
some cut-edges.


title: Limit theorems for nearly unstable Hawkes processes

abstract:
  Because of their tractability and their natural interpretations in term of
market quantities, Hawkes processes are nowadays widely used in high-frequency
finance. However, in practice, the statistical estimation results seem to show
that very often, only nearly unstable Hawkes processes are able to fit the data
properly. By nearly unstable, we mean that the $L^1$ norm of their kernel is
close to unity. We study in this work such processes for which the stability
condition is almost violated. Our main result states that after suitable
rescaling, they asymptotically behave like integrated Cox-Ingersoll-Ross
models. Thus, modeling financial order flows as nearly unstable Hawkes
processes may be a good way to reproduce both their high and low frequency
stylized facts. We then extend this result to the Hawkes-based price model
introduced by Bacry et al. [Quant. Finance 13 (2013) 65-77]. We show that under
a similar criticality condition, this process converges to a Heston model.
Again, we recover well-known stylized facts of prices, both at the
microstructure level and at the macroscopic scale.


title: Quantum field theories with boundaries and novel instabilities

abstract:
  Quantum physics on manifolds with boundary brings novel aspects due to
boundary conditions. One important feature is the appearance of localised
negative eigenmodes for the Laplacian on the boundary. These can potentially
lead to instabilities. We consider quantum field theories on such manifolds and
interpret these as leading to the onset of phase transitions.


title: A Survey of Quantum Property Testing

abstract:
  The area of property testing tries to design algorithms that can efficiently
handle very large amounts of data: given a large object that either has a
certain property or is somehow "far" from having that property, a tester should
efficiently distinguish between these two cases. In this survey we describe
recent results obtained for quantum property testing. This area naturally falls
into three parts. First, we may consider quantum testers for properties of
classical objects. We survey the main examples known where quantum testers can
be much (sometimes exponentially) more efficient than classical testers.
Second, we may consider classical testers of quantum objects. This is the
situation that arises for instance when one is trying to determine if quantum
states or operations do what they are supposed to do, based only on classical
input-output behavior. Finally, we may also consider quantum testers for
properties of quantum objects, such as states or operations. We survey known
bounds on testing various natural properties, such as whether two states are
equal, whether a state is separable, whether two operations commute, etc. We
also highlight connections to other areas of quantum information theory and
mention a number of open questions.


title: Notes on the sin2\Theta\ theorem

abstract:
  An analogue of the Davis-Kahan sin2\Theta\ theorem from [SIAM J. Numer. Anal.
7 (1970), 1--46] is proved under a general spectral separation condition. This
extends the generic sin2\theta\ estimates recently shown by Albeverio and
Motovilov in [Complex Anal. Oper. Theory 7 (2013), 1389--1416]. The result is
applied to the subspace perturbation problem to obtain a bound on the arcsine
of the norm of the difference of the spectral projections associated with
isolated components of the spectrum of the unperturbed and perturbed operators,
respectively.


title:
Coordinated Beamforming for Energy Efficient Transmission in Multicell
  Multiuser Systems

abstract:
  In this paper we study energy efficient joint power allocation and
beamforming for coordinated multicell multiuser downlink systems. The
considered optimization problem is in a non-convex fractional form and hard to
tackle. We propose to first transform the original problem into an equivalent
optimization problem in a parametric subtractive form, by which we reach its
solution through a two-layer optimization scheme. The outer layer only involves
one-dimension search for the energy efficiency parameter which can be addressed
using the bi-section search, the key issue lies in the inner layer where a
non-fractional sub-problem needs to tackle. By exploiting the relationship
between the user rate and the mean square error, we then develop an iterative
algorithm to solve it. The convergence of this algorithm is proved and the
solution is further derived in closed-form. Our analysis also shows that the
proposed algorithm can be implemented in parallel with reasonable complexity.
Numerical results illustrate that our algorithm has a fast convergence and
achieves near-optimal energy efficiency. It is also observed that at the low
transmit power region, our solution almost achieves the optimal sum rate and
the optimal energy efficiency simultaneously; while at the middle-high transmit
power region, a certain sum rate loss is suffered in order to guarantee the
energy efficiency.


title:
Electron-electron and electron-phonon correlation effects on the finite
  temperature electronic and optical properties of zb-GaN

abstract:
  We combine the effect of the electron-electron and electron-phonon
interactions to study the electronic and optical properties of zb-GaN. We show
that only by treating the two effects at the same time it is possible to obtain
an unprecedented agreement of the zero and finite-temperature electronic gaps
and absorption spectra with the experimental results. Compared to the
state-of-the-art results our calculations predict a large effect on the main
absorption peak position and width as well as on the overall absorption
lineshape. These important modifications are traced back to the combined
electron-phonon damping mechanism and non uniform GW level corrections. Our
results demonstrate the importance of treating on equal footing the electron
and phonon mediated correlation effects to obtain an accurate description of
the III-nitrides group physical properties.


title: Black hole foraging: feedback drives feeding

abstract:
  We suggest a new picture of supermassive black hole (SMBH) growth in galaxy
centers. Momentum-driven feedback from an accreting hole gives significant
orbital energy but little angular momentum to the surrounding gas. Once central
accretion drops, the feedback weakens and swept-up gas falls back towards the
SMBH on near-parabolic orbits. These intersect near the black hole with
partially opposed specific angular momenta, causing further infall and
ultimately the formation of a small-scale accretion disk. The feeding rates
into the disk typically exceed Eddington by factors of a few, growing the hole
on the Salpeter timescale and stimulating further feedback. Natural
consequences of this picture include (i) the formation and maintenance of a
roughly toroidal distribution of obscuring matter near the hole; (ii) random
orientations of successive accretion disk episodes; (iii) the possibility of
rapid SMBH growth; (iv) tidal disruption of stars and close binaries formed
from infalling gas, resulting in visible flares and ejection of hypervelocity
stars; (v) super-solar abundances of the matter accreting on to the SMBH; and
(vi) a lower central dark-matter density, and hence annihilation signal, than
adiabatic SMBH growth implies. We also suggest a simple sub-grid recipe for
implementing this process in numerical simulations.


title:
Quantum Computing's Classical Problem, Classical Computing's Quantum
  Problem

abstract:
  Tasked with the challenge to build better and better computers, quantum
computing and classical computing face the same conundrum: the success of
classical computing systems. Small quantum computing systems have been
demonstrated, and intermediate-scale systems are on the horizon, capable of
calculating numeric results or simulating physical systems far beyond what
humans can do by hand. However, to be commercially viable, they must surpass
what our wildly successful, highly advanced classical computers can already do.
At the same time, those classical computers continue to advance, but those
advances are now constrained by thermodynamics, and will soon be limited by the
discrete nature of atomic matter and ultimately quantum effects. Technological
advances benefit both quantum and classical machinery, altering the competitive
landscape. Can we build quantum computing systems that out-compute classical
systems capable of some $10^{30}$ logic gates per month? This article will
discuss the interplay in these competing and cooperating technological trends.


title: GALAMOST: GPU-accelerated large-scale molecular simulation toolkit

abstract:
  A new molecular simulation toolkit composed of some lately developed force
fields and specified models is presented to study the self-assembly, phase
transition, and other properties of polymeric systems at mesoscopic scale by
utilizing the computational power of GPUs. In addition, the hierarchical
self-assembly of soft anisotropic particles and the problems related to
polymerization can be studied by corresponding models included in this toolkit.


title: Criterion of Local Unitary Equivalence for Multipartite States

abstract:
  We study the local unitary equivalence of arbitrary dimensional multipartite
quantum mixed states. We present a necessary and sufficient criterion of the
local unitary equivalence for general multipartite states based on matrix
realignment. The criterion is shown to be operational even for particularly
degenerated states by detailed examples. Besides, explicit expressions of the
local unitary operators are constructed for locally equivalent states. In
complement to the criterion, an alternative approach based on partial
transposition of matrices is also given, which makes the criterion more
effective in dealing with generally degenerated mixed states.


title:
Correction of the Fokker-Planck equation, and the adequate sense of
  stochastic integration

abstract:
  The Fokker-Planck equation needs to be modified when the diffusion parameters
are not constant, in order to match it with the backward equation. It even
becomes simpler, and the integration of the underlying stochastic differential
equation must obey the "anti-Ito" sense (with the latest evaluation point).


title: An ab initio study of magneto-electric coupling of $\rm YMnO_3$

abstract:
  The present paper proposes the direct calculation of the microscopic
contributions to the magneto-electric coupling, using ab initio methods. The
electrostrictive and the Dzyaloshinskii-Moriya contributions were evaluated
individually. For this purpose a specific method was designed, combining DFT
calculations and embedded fragments, explicitely correlated, quantum chemical
calculations. This method allowed us to calculate the evolution of the magnetic
couplings as a function of an applied electric field. We found that in $\rm
YMnO_3$ the Dzyaloshinskii-Moriya contribution to the magneto-electric effect
is three orders of magnitude weaker than the electrostrictive contribution.
Strictive effects are thus dominant in the magnetic exchange evolution under an
applied electric field, and by extension on the magneto-electric effect. These
effects remain however quite small and the modifications of the magnetic
excitations under an applied electric field will be difficult to observe
experimentally. Another important conclusion is that the amplitude of the
magneto-electric effect is very small. Indeed, it can be shown that the linear
magneto-electric tensor is null due to the inter-layer symmetry operations.


title: A de Bruijn identity for symmetric stable laws

abstract:
  We show how some attractive information--theoretic properties of Gaussians
pass over to more general families of stable densities. We define a new score
function for symmetric stable laws, and use it to give a stable version of the
heat equation. Using this, we derive a version of the de Bruijn identity,
allowing us to write the derivative of relative entropy as an inner product of
score functions. We discuss maximum entropy properties of symmetric stable
densities.


title: Nonparaxial accelerating Bessel-like beams

abstract:
  A new class of nonparaxial accelerating optical waves is introduced. These
are beams with a Bessel-like profile that are capable of shifting laterally
along fairly arbitrary trajectories as the wave propagates in free space. The
concept expands on our previous proposal of paraxial accelerating Bessel-like
beams to include beams with subwavelength lobes and/or large trajectory angles.
Such waves are produced when the phase at the input plane is engineered so that
the interfering ray cones are made to focus along the prespecified path. When
the angle of these cones is fixed, the beams possess a diffraction-free Bessel
profile on planes that stay normal to their trajectory, which can be considered
as a generalized definition of diffractionless propagation in the nonparaxial
regime. The analytical procedure leading to these results is based on a ray
optics interpretation of Rayleigh-Sommerfeld diffraction and is presented in
detail. The evolution of the proposed waves is demonstrated through a series of
numerical examples and a variety of trajectories.


title:
Almost Lipschitz-continuous wavelets in metric spaces via a new
  randomization of dyadic cubes

abstract:
  In any quasi-metric space of homogeneous type, Auscher and Hyt\"onen recently
gave a construction of orthonormal wavelets with H\"older-continuity exponent
$\eta>0$. However, even in a metric space, their exponent is in general quite
small. In this paper, we show that the H\"older-exponent can be taken
arbitrarily close to 1 in a metric space. We do so by revisiting and improving
the underlying construction of random dyadic cubes, which also has other
applications.


title: Minimal graphic functions on manifolds of non-negative Ricci curvature

abstract:
  We study minimal graphic functions on complete Riemannian manifolds $\Si$
with non-negative Ricci curvature, Euclidean volume growth and quadratic
curvature decay. We derive global bounds for the gradients for minimal graphic
functions of linear growth only on one side. Then we can obtain a Liouville
type theorem with such growth via splitting for tangent cones of $\Si$ at
infinity. When, in contrast, we do not impose any growth restrictions for
minimal graphic functions, we also obtain a Liouville type theorem under a
certain non-radial Ricci curvature decay condition on $\Si$. In particular, the
borderline for the Ricci curvature decay is sharp by our example in the last
section.


title: Fast Multi-Instance Multi-Label Learning

abstract:
  In many real-world tasks, particularly those involving data objects with
complicated semantics such as images and texts, one object can be represented
by multiple instances and simultaneously be associated with multiple labels.
Such tasks can be formulated as multi-instance multi-label learning (MIML)
problems, and have been extensively studied during the past few years. Existing
MIML approaches have been found useful in many applications; however, most of
them can only handle moderate-sized data. To efficiently handle large data
sets, in this paper we propose the MIMLfast approach, which first constructs a
low-dimensional subspace shared by all labels, and then trains label specific
linear models to optimize approximated ranking loss via stochastic gradient
descent. Although the MIML problem is complicated, MIMLfast is able to achieve
excellent performance by exploiting label relations with shared space and
discovering sub-concepts for complicated labels. Experiments show that the
performance of MIMLfast is highly competitive to state-of-the-art techniques,
whereas its time cost is much less; particularly, on a data set with 20K bags
and 180K instances, MIMLfast is more than 100 times faster than existing MIML
approaches. On a larger data set where none of existing approaches can return
results in 24 hours, MIMLfast takes only 12 minutes. Moreover, our approach is
able to identify the most representative instance for each label, and thus
providing a chance to understand the relation between input patterns and output
label semantics.


title: A State Of the Art Report on Research in Multiple RGB-D sensor Setups

abstract:
  That the Microsoft Kinect, an RGB-D sensor, transformed the gaming and end
consumer sector has been anticipated by the developers. That it also impacted
in rigorous computer vision research has probably been a surprise to the whole
community. Shortly before the commercial deployment of its successor, Kinect
One, the research literature fills with resumees and state-of-the art papers to
summarize the development over the past 3 years. This particular report
describes significant research projects which have built on sensoring setups
that include two or more RGB-D sensors in one scene.


title:
Distributed Space-Time Coding for Full-Duplex Asynchronous Cooperative
  Communications

abstract:
  In this paper, we propose two distributed linear convolutional space-time
coding (DLC-STC) schemes for full-duplex (FD) asynchronous cooperative
communications. The DLC-STC Scheme 1 is for the case of the complete loop
channel cancellation, which achieves the full asynchronous cooperative
diversity. The DLC-STC Scheme 2 is for the case of the partial loop channel
cancellation and amplifying, where some loop signals are used as the
self-coding instead of treated as interference to be directly cancelled. We
show this scheme can achieve full asynchronous cooperative diversity. We then
evaluate the performance of the two schemes when loop channel information is
not accurate and present an amplifying factor control method for the DLC-STC
Scheme 2 to improve its performance with inaccurate loop channel information.
Simulation results show that the DLC-STC Scheme 1 outperforms the DLC-STC
Scheme 2 and the delay diversity scheme if perfect or high quality loop channel
information is available at the relay, while the DLC-STC Scheme 2 achieves
better performance if the loop channel information is imperfect.


title: Multi-level stochastic approximation algorithms

abstract:
  This paper studies multi-level stochastic approximation algorithms. Our aim
is to extend the scope of the multilevel Monte Carlo method recently introduced
by Giles (Giles 2008) to the framework of stochastic optimization by means of
stochastic approximation algorithm. We first introduce and study a two-level
method, also referred as statistical Romberg stochastic approximation
algorithm. Then, its extension to multi-level is proposed. We prove a central
limit theorem for both methods and describe the possible optimal choices of
step size sequence. Numerical results confirm the theoretical analysis and show
a significant reduction in the initial computational cost.


title: The role of RGB-D benchmark datasets: an overview

abstract:
  The advent of the Microsoft Kinect three years ago stimulated not only the
computer vision community for new algorithms and setups to tackle well-known
problems in the community but also sparked the launch of several new benchmark
datasets to which future algorithms can be compared 019 to. This review of the
literature and industry developments concludes that the current RGB-D benchmark
datasets can be useful to determine the accuracy of a variety of applications
of a single or multiple RGB-D sensors.


title:
Dynamic Monte Carlo simulation of coupled transport through a narrow
  multiply-occupied pore

abstract:
  Dynamic Monte Carlo simulations are used to study coupled transport
(co-transport) through sub-nanometer-diameter pores. In this classic
Hodgkin-Keynes mechanism, an ion species uses the large flux of an abundant ion
species to move against its concentration gradient. The efficiency of
co-transport is examined for various pore parameters so that synthetic
nanopores can be engineered to maximize this effect. In general, the pore must
be narrow enough that ions cannot pass each other and the charge of the pore
large enough to attract many ions so that they exchange momentum. Co-transport
efficiency increases as pore length increases, but even very short pores
exhibit co-transport, in contradiction to the usual perception that long pores
are necessary. The parameter ranges where co-transport occurs is consistent
with current and near-future synthetic nanopore geometry parameters, suggesting
that co-transport of ions may be a new application of nanopores.


title:
Distributed Linear Convolutional Space-Time Coding for Two-Relay
  Full-Duplex Asynchronous Cooperative Networks

abstract:
  In this paper, a two-relay full-duplex asynchronous cooperative network with
the amplify-and-forward (AF) protocol is considered. We propose two distributed
space-time coding schemes for the cases with and without cross-talks,
respectively. In the first case, each relay can receive the signal sent by the
other through the cross-talk link. We first study the feasibility of cross-talk
cancellation in this network and show that the cross-talk interference cannot
be removed well. For this reason, we design space-time codes by utilizing the
cross-talk signals instead of removing them. In the other case, the self-coding
is realized individually through the loop channel at each relay node and the
signals from the two relay nodes form a space-time code. The achievable
cooperative diversity of both cases is investigated and the conditions to
achieve full cooperative diversity are presented. Simulation results verify the
theoretical analysis.


title: Tutte polynomial of a small-world farey graph

abstract:
  In this paper, we find recursive formulas for the Tutte polynomial of a
family of small-world networks: Farey graphs, which are modular and have an
exponential degree hierarchy. Then, making use of these formulas, we determine
the number of spanning trees, as well as the number of connected spanning
subgraphs. Furthermore, we also derive exact expressions for the chromatic
polynomial and the reliability polynomial of these graphs.


title: Precision tests of unitarity in leptonic mixing

abstract:
  In the light of the recent LHC data, we study precision tests sensitive to
the violation of lepton universality, in particular the violation of unitarity
in neutrino mixing. Keeping all data we find no satisfatory fit, even allowing
for violations of unitarity in neutrino mixing. Leaving out sin$^2
\theta_{\scriptsize \mbox{eff}}$ from the hadronic forward-backward asymmetry
at LEP, we find a good fit to the data with some evidence of lepton
universality violation at the $\mathcal{O}(10^{-3})$ level.


title:
Impact of oscillations of photons into axion-like particles on the
  very-high energy gamma-ray spectrum of the blazar PKS1424+240

abstract:
  Very high energy (VHE) gamma-rays undergo pair production with low energy
photons of background radiation fields. This leads to an attenuation of the
primary gamma-ray flux of extragalactic sources in the interaction with the
extragalactic background light (EBL) which stretches from ultraviolet to
far-infrared wavelengths.
  In the presence of magnetic fields, gamma-rays could oscillate into
hypothetical axion-like particles (ALPs). This might lead to a reduced opacity
of the Universe for VHE gamma-rays, as ALPs circumvent pair production. Here,
the impact of photon-ALP conversions on the spectrum of PKS1424+240 is
demonstrated. A lower limit on the redshift of this blazar was recently
determined to be $z \geqslant 0.6035$, making it the farthest source ever
observed at VHE energies. Under the assumption of a specific magnetic field
scenario and EBL model, photon-ALP couplings are derived that lead to an
overall concave intrinsic blazar spectrum.


title: Distributed Coordinate Descent Method for Learning with Big Data

abstract:
  In this paper we develop and analyze Hydra: HYbriD cooRdinAte descent method
for solving loss minimization problems with big data. We initially partition
the coordinates (features) and assign each partition to a different node of a
cluster. At every iteration, each node picks a random subset of the coordinates
from those it owns, independently from the other computers, and in parallel
computes and applies updates to the selected coordinates based on a simple
closed-form formula. We give bounds on the number of iterations sufficient to
approximately solve the problem with high probability, and show how it depends
on the data and on the partitioning. We perform numerical experiments with a
LASSO instance described by a 3TB matrix.


title: The Heavy Photon Search Experiment at Jefferson Lab

abstract:
  The Heavy Photon Search (HPS) is a new experiment at Jefferson Lab that will
search for heavy U(1) vector bosons (heavy photons or dark photons) in the mass
range of 20 MeV/c$^2$ to 1 GeV/c$^2$. Dark photons in this mass range are
theoretically favorable and may mediate dark matter interactions. The dark
photon couples to electric charge through kinetic mixing with the photon,
allowing its production through a process analogous to bremsstrahlung
radiation. HPS will utilize this production mechanism to probe dark photons
with relative couplings of ${\epsilon}^2 = {\alpha}'/{\alpha}$ ~ $10^{-5}$ to
$10^{-10}$ and search for the $e^{+}e^{-}$ or $\mu^{+}\mu^{-}$ decay of the
dark photon via two signatures (invariant mass and displaced vertex). Using
Jefferson Lab's high luminosity electron beam along with a compact large
acceptance forward spectrometer consisting of a silicon vertex tracker, lead
tungstate electromagnetic calorimeter and a muon detector, HPS will access
hitherto unexplored regions in the mass/coupling space.


title:
Mechanism for Radiation Damage Resistance in Yttrium Oxide Dispersion
  Strengthened Steels

abstract:
  ODS steels based on yttrium oxide have been suggested as potential fusion
reactor wall materials due to their observed radiation resistance properties.
Presumably this radiation resistance can be related to the interaction of the
particle with vacancies,self-interstitial atoms (SIAs) and other radiation
damage debris. Density functional theory has been used to investigate this at
the atomic scale. Four distinct interfaces, some based on HRTEM observations,
between iron and yttrium oxide were investigated. It is been shown that the
Y$_2$O$_3$-Fe interface acts as a strong trap with long-range attraction for
both interstitial and vacancy defects, allowing recombination without altering
the interface structure. The catalytic elimination of defects without change to
the microstructure explains the improved behaviour of ODS steels with respect
to radiation creep and swelling.


title:
What about U on Surfaces? - Extended Hubbard Models for Adatom Systems
  from First Principles

abstract:
  Electronic correlations together with dimensional constraints lead to some of
the most fascinating properties known in condensed matter physics. As possible
candidates where these conditions are realized, semiconductor (111) surfaces
and adatom systems on surfaces have been under investigation for quite some
time. However, state-of-the-art theoretical studies on these materials that
include many body effects beyond the band picture are rare. First principles
estimates of inter-electronic Coulomb interactions for the correlated states
are missing entirely, and usually these interactions are treated as adjustable
parameters. In the present work, we report on calculations of the interaction
parameters for the group IV surface-adatom systems in the \alpha-phase series
of Si(111):\{C, Si, Sn, Pb\}. For all systems investigated, interelectronic
Coulomb interactions are indeed large compared to the kinetic energy of the
states in question. Moreover, our study reveals that intersite interactions
cannot be disregarded. We explicitly construct an extended Hubbard model for
the series of group IV surface-adatom systems on silicon, which can be used for
further many-body calculations.


title: Active causation and the origin of meaning

abstract:
  Purpose and meaning are necessary concepts for understanding mind and
culture, but appear to be absent from the physical world and are not part of
the explanatory framework of the natural sciences. Understanding how meaning
(in the broad sense of the term) could arise from a physical world has proven
to be a tough problem. The basic scheme of Darwinian evolution produces
adaptations that only represent apparent ("as if") goals and meaning. Here I
use evolutionary models to show that a slight, evolvable extension of the basic
scheme is sufficient to produce genuine goals. The extension, targeted
modulation of mutation rate, is known to be generally present in biological
cells, and gives rise to two phenomena that are absent from the non-living
world: intrinsic meaning and the ability to initiate goal-directed chains of
causation (active causation). The extended scheme accomplishes this by
utilizing randomness modulated by a feedback loop that is itself regulated by
evolutionary pressure. The mechanism can be extended to behavioural variability
as well, and thus shows how freedom of behaviour is possible. A further
extension to communication suggests that the active exchange of intrinsic
meaning between organisms may be the origin of consciousness, which in
combination with active causation can provide a physical basis for the
phenomenon of free will.


title:
An Independent Planet Search In The Kepler Dataset. II. An extremely
  low-density super-Earth mass planet around Kepler-87

abstract:
  [ABRIDGED]: Aims: two candidates in the KOI 1574 system are relatively
long-period (about 114d and 191d) and in 5:3 resonance. We therefore search for
TTVs in this particularly promising system. Methods: The full Kepler data was
used, allowing to search for TTVs as well as for additional transit-like
signals. Results: We detect strong anti-correlated TTVs of the 114d and 191d
signals, dynamically confirming them as members of the same system. Dynamical
simulations reproducing the observed TTVs allow us to also determine the masses
of the planets. KOI 1574.01 (hereafter Kepler-87 b) was found to have a radius
of 13.49 +/- 0.55 R_earth and a mass of 324.2 +/- 8.8M_earth, and KOI 1574.02
(Kepler-87 c) was found to have a radius of 6.14 +/- 0.29R_earth and a mass of
6.4 +/- 0.8M_earth. Both planets have low densities of 0.729 and 0.152 g cm^-3,
respectively, which is non-trivial for such cold and old (7-8 Gyr) planets.
Specifically, Kepler-87 c is the lowest- density planet in the super-Earth mass
range. Both planets are thus particularly amenable to modeling and planetary
structure studies, and also present an interesting case were ground-based
photometric follow-up of Kepler planets is very desirable. Finally, we also
detect two more short period super-Earth sized planetary (< 2R_earth)
candidates in the system, making the relatively high multiplicity of this
system notable against the general paucity of multiple systems in the presence
of giant planets like Kepler-87 b.


title: Existence of three-phase interlines on a cerium dioxide surface

abstract:
  The three-phase interline described by a statistical continuum limit (i.e.
quasi-boundary) has been postulated to gain a deeper insight into the reduction
of CeO2 to CeO1.940 in a LiCl-KCl eutectic melt. Fabrication of a CeO2
superstructure by a condensed-phase method provided a CeO2 (111) surface at the
nanoscale, which allowed the three-phase interline to be identified given
previously reported quantum confinement effects in quasi-stoichiometric CeO2
nanoparticles. Also, the CeO2 superstructure displays the same crystal lattice
planes as a bulk CeO2 grain but the triply degenerate Raman-active peak of the
grain is higher by a factor of ~ 2.5 with a wider full width at half maximum.


title: A Simplified Approach for Quality Management in Data Warehouse

abstract:
  Data warehousing is continuously gaining importance as organizations are
realizing the benefits of decision oriented data bases. However, the stumbling
block to this rapid development is data quality issues at various stages of
data warehousing. Quality can be defined as a measure of excellence or a state
free from defects. Users appreciate quality products and available literature
suggests that many organization`s have significant data quality problems that
have substantial social and economic impacts. A metadata based quality system
is introduced to manage quality of data in data warehouse. The approach is used
to analyze the quality of data warehouse system by checking the expected value
of quality parameters with that of actual values. The proposed approach is
supported with a metadata framework that can store additional information to
analyze the quality parameters, whenever required.


title: Attosecond pulse shaping using partial phase matching

abstract:
  We propose a method for programmable shaping of the amplitude and phase of
the XUV and x-ray attosecond pulses produced by high-order harmonic generation.
It overcomes the bandwidth limitations of existing spectral filters and enables
removal of the intrinsic attosecond chirp as well as the synthesis of pulse
sequences. It is based on partial phase matching, such as quasi-phase matching,
using a longitudinally addressable modulation.


title: Lazy Updating increases the speed of stochastic simulations

abstract:
  Biological reaction networks often contain what might be called 'hub
molecules', which are involved in many reactions. For example, ATP is commonly
consumed and produced. When reaction networks contain molecules like ATP, they
are difficult to efficiently simulate, because every time such a molecule is
consumed or produced, the propensities of numerous reactions need to be
updated. In order to increase the speed of simulations, we developed 'Lazy
Updating', which postpones some propensity updates until some aspect of the
state of the system changes by more than a defined threshold. Lazy Updating
works with several existing stochastic simulation algorithms, including
Gillespie's direct method and the Next Reaction Method. We tested Lazy Updating
on two example models, and for the larger model it increased the speed of
simulations over eight-fold while maintaining a high level of accuracy. These
increases in speed will be larger for models with more widely connected hub
molecules. Thus Lazy Updating can contribute towards making models with a
limited computing time budget more realistic by including previously neglected
hub molecules.


title:
X-Shooter spectroscopy of young stellar objects: IV -- Accretion in
  low-mass stars and sub-stellar objects in Lupus

abstract:
  We present X-Shooter/VLT observations of a sample of 36 accreting low-mass
stellar and sub-stellar objects (YSOs) in the Lupus star forming region,
spanning a range in mass from ~0.03 to ~1.2Msun, but mostly with 0.1Msun <
Mstar < 0.5Msun. Our aim is twofold: firstly, analyse the relationship between
excess-continuum and line emission accretion diagnostics, and, secondly, to
investigate the accretion properties in terms of the physical properties of the
central object. The accretion luminosity (Lacc), and from it the accretion rate
(Macc), is derived by modelling the excess emission, from the UV to the
near-IR, as the continuum emission of a slab of hydrogen. The flux and
luminosity (Ll) of a large number of emission lines of H, He, CaII, etc.,
observed simultaneously in the range from ~330nm to 2500nm, were computed. The
luminosity of all the lines is well correlated with Lacc. We provide empirical
relationships between Lacc and the luminosity of 39 emission lines, which have
a lower dispersion as compared to previous relationships in the literature. Our
measurements extend the Pab and Brg relationships to Lacc values about two
orders of magnitude lower than those reported in previous studies. We confirm
that different methodologies to measure Lacc and Macc yield significantly
different results: Ha line profile modelling may underestimate Macc by 0.6 to
0.8dex with respect to Macc derived from continuum-excess measures. Such
differences may explain the likely spurious bi-modal relationships between Macc
and other YSOs properties reported in the literature. We derive Macc in the
range 2e-12 -- 4e-8 Msun/yr and conclude that Macc is proportional to
Mstar^1.8(+/-0.2), with a dispersion lower by a factor of about 2 than in
previous studies. A number of properties indicate that the physical conditions
of the accreting gas are similar over more than 5 orders of magnitude in Macc.


title: Inductive dressed ring traps for ultracold atoms

abstract:
  We present two novel dressed inductive ring trap geometries, ideal for atom
interferometry or studies of superfluidity and well-suited to utilisation in
atom chip architectures. The design permits ring radii currently only
accessible via near-diffraction-limited optical traps, whilst retaining the
ultra-smooth magnetic potential afforded by inductive traps. One geometry
offers simple parallel implementation of multiple rings, whereas the other
geometry permits axial beam-splitting of the torus suitable for whole-ring atom
interferometry.


title:
Predicting Students' Performance Using ID3 And C4.5 Classification
  Algorithms

abstract:
  An educational institution needs to have an approximate prior knowledge of
enrolled students to predict their performance in future academics. This helps
them to identify promising students and also provides them an opportunity to
pay attention to and improve those who would probably get lower grades. As a
solution, we have developed a system which can predict the performance of
students from their previous performances using concepts of data mining
techniques under Classification. We have analyzed the data set containing
information about students, such as gender, marks scored in the board
examinations of classes X and XII, marks and rank in entrance examinations and
results in first year of the previous batch of students. By applying the ID3
(Iterative Dichotomiser 3) and C4.5 classification algorithms on this data, we
have predicted the general and individual performance of freshly admitted
students in future examinations.


title: Intermediate inflation from rainbow gravity

abstract:
  It is possible to dualize theories based on deformed dispersion relations and
Einstein gravity so as to map them into theories with trivial dispersion
relations and rainbow gravity. This often leads to "dual inflation" without the
usual breaking of the strong energy condition. We identify the dispersion
relations in the original frame which map into "intermediate" inflationary
models. These turn out to be particularly simple: power-laws modulated by
powers of a logarithm. The fluctuations predicted by these scenarios are near,
but not exactly scale-invariant, with a red running spectral index. These
dispersion relations deserve further study within the context of quantum
gravity and the phenomenon of dimensional reduction in the ultraviolet.


title: The evolution of surface magnetic fields in young solar-type stars

abstract:
  The surface rotation rates of young solar-type stars decrease rapidly with
age from the end of the pre-main sequence though the early main sequence. This
suggests that there is also an important change in the dynamos operating in
these stars, which should be observable in their surface magnetic fields. Here
we present early results in a study aimed at observing the evolution of these
magnetic fields through this critical time period. We are observing stars in
open clusters and stellar associations to provide precise ages, and using
Zeeman Doppler Imaging to characterize the complex magnetic fields. Presented
here are results for six stars, three in the in the beta Pic association (~10
Myr old) and three in the AB Dor association (~100 Myr old).


title: Potential Impact of a New GEM-based Detector on CMS Triggering

abstract:
  With the increases in the LHC instantaneous luminosity, maintaining effective
triggering and avoiding dead time will become especially challenging. As the
sensitivity of many physics studies, depends critically on the ability to
maintain relatively low muon momentum thresholds, the identification of
potential improvements in triggering is particularly important. The addition of
a new muon detector to the existing CMS muon system in the very forward region
allows for a substantial improvement in the performance of muon triggering.
Integration of the new detector and the existing Cathode Strip Chamber system
can improve the muon trigger momentum resolution due to an increase in the
lever arm for the measurement of the muon bending angle.


title: Numerical Methods for a Nonlinear BVP Arising in Physical Oceanography

abstract:
  In this paper we report and compare the numerical results for an ocean
circulation model obtained by the classical truncated boundary formulation, the
free boundary approach and a quasi-uniform grid treatment of the problem. We
apply a shooting method to the truncated boundary formulation and finite
difference methods to both the free boundary approach and the quasi-uniform
grid treatment. Using the shooting method, supplemented by the Newton's
iterations, we show that the ocean circulation model cannot be considered as a
simple test case. In fact, for this method we are forced to use as initial
iterate a value close to the correct missing initial condition in order to be
able to get a convergent numerical solution. The reported numerical results
allow us to point out how the finite difference method with a quasi-uniform
grid is the less demanding approach and that the free boundary approach
provides a more reliable formulation than the classical truncated boundary
formulation.


title:
An Investigation of Methods for Handling Missing Data with Penalized
  Regression

abstract:
  We investigate methods for penalized regression in the presence of missing
observations. This paper introduces a method for estimating the parameters
which compensates for the missing observations. We first, derive an unbiased
estimator of the objective function with respect to the missing data and then,
modify the criterion to ensure convexity. Finally, we extend our approach to a
family of models that embraces the mean imputation method. These approaches are
compared to the mean imputation method, one of the simplest methods for dealing
with missing observations problem, via simulations. We also investigate the
problem of making predictions when there are missing values in the test set.


title:
Wide-band mass measurements with a multi-reflection time-of-flight mass
  spectrograph

abstract:
  We characterize the mass bandwidth of the a multi-reflection time-of-flight
mass spectrograph, showing both the functional and useful mass bandwidth. We
then demonstrate the use of a multi-reflection time-of-flight mass spectrograph
to perform mass measurements in mass bands much wider than the mass bandwidth.


title: Direct deconvolution of radio synthesis images using L1 minimisation

abstract:
  We introduce an algorithm for the deconvolution of radio synthesis images
that accounts for the non-coplanar-baseline effect, allows multiscale
reconstruction onto arbitrarily positioned pixel grids, and allows the antenna
elements to have direcitonal dependent gains. Using numerical L1-minimisation
techniques established in the application of compressive sensing to radio
astronomy, we directly solve the deconvolution equation using GPU (graphics
processing unit) hardware. This approach relies on an analytic expression for
the contribution of a pixel in the image to the observed visibilities, and the
well-known expression for Dirac delta function pixels is used along with two
new approximations for Gaussian pixels, which allow for multi-scale
deconvolution. The algorithm is similar to the CLEAN algorithm in that it fits
the reconstructed pixels in the image to the observed visibilities while
minimising the total flux; however, unlike CLEAN, it operates on the ungridded
visibilities, enforces positivity, and has guaranteed global convergence. The
pixels in the image can be arbitrarily distributed and arbitrary gains between
each pixel and each antenna element can also be specified. Direct deconvolution
of the observed visibilities is shown to be feasible for several deconvolution
problems, including a 1 megapixel wide-field image with over 400,000
visibilities. Correctness of the algorithm is shown using synthetic data, and
the algorithm shows good image reconstruction performance. Though this
algorithm requires significantly more computation than methods based on the
CLEAN algorithm, we demonstrate that it is trivially parallelisable across
multiple GPUs and potentially can be scaled to GPU clusters. We also
demonstrate that a significant speed up is possible through the use of
multi-scale analysis using Gaussian pixels.


title:
Mining The Relationship Between Demographic Variables And Brand
  Associations

abstract:
  This research aims to mine the relationship between demographic variables and
brand associations, and study the relative importance of these variables. The
study is conducted on fast-food restaurant brands chains in Jordan. The result
ranks and evaluates the demographic variables in relation with the brand
associations for the selected sample. Discovering brand associations according
to demographic variables reveals many facts and linkages in the context of
Jordanian culture. Suggestions are given accordingly for marketers to benefits
from to build their strategies and direct their decisions. Also, data mining
technique used in this study reflects a new trend for studying and analyzing
marketing samples.


title: Coherent Dissociation of Relativistic N-12 Nuclei

abstract:
  The dissociation of relativistic $^{12}$N nuclei having a momentum of 2 GeV/c
per nucleon and undergoing the most peripheral interactions in a track emulsion
is studied. The picture of charged topology of product ensembles of
relativistic fragments and special features of their angular distributions are
presented.


title:
Differential elimination by differential specialization of Sylvester
  style matrices

abstract:
  Differential resultant formulas are defined, for a system $\mathcal{P}$ of
$n$ ordinary Laurent differential polynomials in $n-1$ differential variables.
These are determinants of coefficient matrices of an extended system of
polynomials obtained from $\mathcal{P}$ through derivations and multiplications
by Laurent monomials. To start, through derivations, a system $ps(\mathcal{P})$
of $L$ polynomials in $L-1$ algebraic variables is obtained, which is non
sparse in the order of derivation. This enables the use of existing formulas
for the computation of algebraic resultants, of the multivariate sparse
algebraic polynomials in $ps(\mathcal{P})$, to obtain polynomials in the
differential elimination ideal generated by $\mathcal{P}$. The formulas
obtained are multiples of the sparse differential resultant defined by Li, Yuan
and Gao, and provide order and degree bounds in terms of mixed volumes in the
generic case.


abstract:
  Counter-rotating vortices in miscible two-component Bose-Einstein
condensates, in which superflows counter-rotate between the two components
around the overlapped vortex cores, are studied theoretically in a
pancake-shaped potential. In a linear stability analysis with the Bogoliubov-de
Gennes model, we show that counter-rotating vortices are dynamically unstable
against splitting into multiple vortices. The instability shows characteristic
behaviors as a result of countersuperflow instability, which causes relaxation
of relative flows between the two components in binary condensates. The
characteristic behaviors are completely different from those of multiquantum
vortices in single-component Bose-Einstein condensates; the number of vortices
generated by the instability can become larger than the initial winding number
of the counter-rotating vortex. We also investigate the nonlinear dynamics of
the instability by numerically solving the Gross-Pitaevskii equations. The
nonlinear dynamics drastically changes when the winding number of
counter-rotating vortices becomes larger, which lead to nucleation of vortex
pairs outside of the vortex core. The instability eventually develops into
turbulence after the relaxation of the relative rotation between the two
components.


title:
On the Schatten-von Neumann properties of some pseudo-differential
  operators

abstract:
  We obtain a number of explicit estimates for quasi-norms of
pseudo-differential operators in the Schatten-von Neumann classes $S_q$ with
$0<q\le 1$. The estimates are applied to derive semi-classical bounds for
operators with smooth or non-smooth symbols.


title: Facets of chiral perturbation theory

abstract:
  Chiral perturbation theory is the effective field theory of the Standard
Model at low energies. After a short introduction and overview, I discuss three
topics where the chiral approach leads to a deeper understanding of low-energy
hadron physics: radiative kaon decays, carbogenesis in stellar nucleosynthesis
and the interplay of chiral perturbation theory and lattice QCD.


title: A Robust Variational Model for Positive Image Deconvolution

abstract:
  In this paper, an iterative method for robust deconvolution with positivity
constraints is discussed. It is based on the known variational interpretation
of the Richardson-Lucy iterative deconvolution as fixed-point iteration for the
minimisation of an information divergence functional under a multiplicative
perturbation model. The asymmetric penaliser function involved in this
functional is then modified into a robust penaliser, and complemented with a
regulariser. The resulting functional gives rise to a fixed point iteration
that we call robust and regularised Richardson-Lucy deconvolution. It achieves
an image restoration quality comparable to state-of-the-art robust variational
deconvolution with a computational efficiency similar to that of the original
Richardson-Lucy method. Experiments on synthetic and real-world image data
demonstrate the performance of the proposed method.


title:
An Iterative Method Applied to Correct the Actual Compressor Performance
  to the Equivalent Performance under the Specified Reference Conditions

abstract:
  This paper proposes a correction method, which corrects the actual compressor
performance in real operating conditions to the equivalent performance under
specified reference condition. The purpose is to make fair comparisons between
actual performance against design performance or reference maps under the same
operating conditions. Then the abnormal operating conditions or early failure
indications can be identified through condition monitoring, which helps to
avoid mandatory shutdown and reduces maintenance costs. The corrections are
based on an iterative scheme, which simultaneously correct the main performance
parameters known as the polytropic head, the gas power, and the polytropic
efficiency. The excellent performance of the method is demonstrated by
performing the corrections over real industrial measurements.


title:
Crowding Out of Giants by Dwarfs: An Origin for the Lack of Companion
  Planets in Hot Jupiter Systems

abstract:
  We investigate formation of close-in terrestrial planets from planetary
embryos under the influence of a hot Jupiter (HJ) using gravitational N-body
simulations that include gravitational interactions between the gas disk and
the terrestrial planet (e.g., type I migration). Our simulations show that
several terrestrial planets efficiently form outside the orbit of the HJ,
making a chain of planets, and all of them gravitationally interact directly or
indirectly with the HJ through resonance, which leads to inward migration of
the HJ. We call this mechanism of induced migration of the HJ as "crowding
out." The HJ is eventually lost by collision with the central star, and only
several terrestrial planets remain. We also find that the efficiency of the
crowding-out effect depends on model parameters; for example, the heavier the
disk is, the more efficient the crowding out is. When planet formation occurs
in a massive disk, the HJ can be lost to the central star and is never
observed. On the other hand, for a less massive disk, the HJ and terrestrial
planets can coexist; however, the companion planets can be below the detection
limit of current observations. In both cases, systems with the HJ and
terrestrial planets have little chance for detection. Therefore, our model
naturally explains the lack of companion planets in HJ systems regardless of
the disk mass. In effect, our model provide a theoretical prediction for future
observations; additional planets can be discovered just outside the HJ, and
their masses should generally be small.


title: Exotic Higgs Searches in CMS

abstract:
  We present some of the most recent results from the CMS Collaboration on
searches for Higgs-like particles in models beyond the Standard Model. Several
rare and exotic decay modes of the Higgs boson are explored. The results of the
searches are relevant for establishing whether the 125 GeV particle observed in
Higgs boson searches at the LHC has the properties expected for a Standard
Model Higgs boson.


title:
Double four-bar crank-slider mechanism dynamic balancing by
  meta-heuristic algorithms

abstract:
  In this paper, a new method for dynamic balancing of double four-bar crank
slider mechanism by meta- heuristic-based optimization algorithms is proposed.
For this purpose, a proper objective function which is necessary for balancing
of this mechanism and corresponding constraints has been obtained by dynamic
modeling of the mechanism. Then PSO, ABC, BGA and HGAPSO algorithms have been
applied for minimizing the defined cost function in optimization step. The
optimization results have been studied completely by extracting the cost
function, fitness, convergence speed and runtime values of applied algorithms.
It has been shown that PSO and ABC are more efficient than BGA and HGAPSO in
terms of convergence speed and result quality. Also, a laboratory scale
experimental doublefour-bar crank-slider mechanism was provided for validating
the proposed balancing method practically.


title: Exact domain wall theory for deterministic TASEP with parallel update

abstract:
  Domain wall theory (DWT) has proved to be a powerful tool for the analysis of
one-dimensional transport processes. A simple version of it was found very
accurate for the Totally Asymmetric Simple Exclusion Process (TASEP) with
random sequential update. However, a general implementation of DWT is still
missing in the case of updates with less fluctuations, which are often more
relevant for applications. Here we develop an exact DWT for TASEP with parallel
update and deterministic (p=1) bulk motion. Remarkably, the dynamics of this
system can be described by the motion of a domain wall not only on the
coarse-grained level but also exactly on the microscopic scale for arbitrary
system size. All properties of this TASEP, time-dependent and stationary, are
shown to follow from the solution of a bivariate master equation whose
variables are not only the position but also the velocity of the domain wall.
In the continuum limit this exactly soluble model then allows us to perform a
first principle derivation of a Fokker-Planck equation for the position of the
wall. The diffusion constant appearing in this equation differs from the one
obtained with the traditional `simple' DWT.


title: On compacta not admitting a stable intersection in R^n

abstract:
  Compacta X and Y are said to admit a stable intersection in R^n if there are
maps f : X -> R^n and g : Y -> R^n such that for every sufficiently close
continuous approximations f' : X -> R^n and g' : Y -> R^n of f and g we have
f'(X)\cap g'(Y)\neq\emptyset. The well-known conjecture asserting that X and Y
do not admit a stable intersection in R^n if and only if dim X \times Y \leq
n-1 was confirmed in many cases. In this paper we prove this conjecture in all
the remaining cases except the case dim X =dim Y =3, dim X \times Y=4 and n=5
which still remains open.


title: Intersections of adelic groups on a surface

abstract:
  We solve a technical problem related to adeles on an algebraic surface. Given
a finite set of natural numbers up to two, one associates an adelic group. We
show that this operation commutes with taking intersections if the surface is
defined over an uncountable field and we provide a counterexample otherwise.


title: Euclidean quadratic forms are ADC forms: A short proof

abstract:
  This note presents a short, transparent proof of the theorem that every
Euclidean quadratic form over a normed integral domain is an
Aubry-Davenport-Cassels form. The theorem, as formulated in the note, allows
besides quadratic terms also linear and constant terms, imposes no restrictions
on the characteristic of the integral domain, and makes no unnecessary
assumptions about the norm.


title:
Ionization Yield from Nuclear Recoils in Liquid-Xenon Dark Matter
  Detection

abstract:
  The ionization yield in the two-phase liquid xenon dark-matter detector has
been studied in keV nuclear-recoil energy region. The newly-obtained nuclear
quenching as well as the recently-measured average energy required to produce
an electron-ion pair are used to calculate the total electric charges produced.
To estimate the fraction of the electron charges collected, the Thomas-Imel
model is generalized to describing the field dependence for nuclear recoils in
liquid xenon. With free parameters fitted to experiment measured 56.5 keV
nuclear recoils, the energy dependence of ionization yield for nuclear recoils
is predicted, which increases with the decreasing of the recoiling energy and
reaches the maximum value at 2~3 keV. This prediction agrees well with existing
data and may help to lower the energy detection threshold for nuclear recoils
to ~1 keV.


title:
Towards Internet of Things (IOTS):Integration of Wireless Sensor Network
  to Cloud Services for Data Collection and Sharing

abstract:
  Cloud computing provides great benefits for applications hosted on the Web
that also have special computational and storage requirements. This paper
proposes an extensible and flexible architecture for integrating Wireless
Sensor Networks with the Cloud. We have used REST based Web services as an
interoperable application layer that can be directly integrated into other
application domains for remote monitoring such as e-health care services, smart
homes, or even vehicular area networks (VAN). For proof of concept, we have
implemented a REST based Web services on an IP based low power WSN test bed,
which enables data access from anywhere. The alert feature has also been
implemented to notify users via email or tweets for monitoring data when they
exceed values and events of interest.


title:
HST absolute Proper Motions of NGC 6681 (M70) and the Sagittarius Dwarf
  Spheroidal Galaxy

abstract:
  We have measured absolute proper motions for the three populations
intercepted in the direction of the Galactic globular cluster NGC 6681: the
cluster itself, the Sagittarius dwarf spheroidal galaxy and the field. For this
we used Hubble Space Telescope ACS/WFC and WFC3/UVIS optical imaging data
separated by a temporal baseline of 5.464 years. Five background galaxies were
used to determine the zero point of the absolute-motion reference frame. The
resulting absolute proper motion of NGC 6681 is ($\mu_{\alpha}\cos\delta,
\mu_{\delta}$)=($1.58\pm0.18, -4.57\pm0.16$) \masyr. This is the first estimate
ever made for this cluster. For the Sgr dSph we obtain
($\mu_{\alpha}\cos\delta, \mu_{\delta})=(-2.54\pm0.18, -1.19\pm0.16$) \masyr,
consistent with previous measurements and with the values predicted by
theoretical models. The absolute proper motion of the Galaxy population in our
field of view is ($\mu_{\alpha}\cos\delta, \mu_{\delta})=(-1.21\pm0.27,
-4.39\pm0.26$) \masyr. In this study we also use background Sagittarius Dwarf
Spheroidal stars to determine the rotation of the globular cluster in the plane
of the sky and find that NGC 6681 is not rotating significantly:\ $v_{\rm
rot}=0.82\pm1.02$ km$\,$s$^{-1}$ at a distance of 1 arcmin from the cluster
center.


title:
Interface dipoles of organic molecules on Ag(111) in hybrid
  density-functional theory

abstract:
  We investigate the molecular acceptors 3,4,9,10-perylene-tetracarboxylic acid
dianhydride (PTCDA), 2,3,5,6-tetra uoro-7,7,8,8-tetracyanoquinodimethane
(F4TCNQ), and 4,5,9,10-pyrenetetraone (PYTON) on Ag(111) using
densityfunctional theory. For two groups of the HSE(\alpha, \omega) family of
exchange-correlation functionals (\omega = 0 and \omega = 0.2\AA) we study the
isolated components as well as the combined systems as a function of the amount
of exact-exchange (\alpha). We find that hybrid functionals favour electron
transfer to the adsorbate. Comparing to experimental work-function data, we
report for (\alpha) ca. 0.25 a notable but small improvement over (semi)local
functionals for the interface dipole. Although Kohn-Sham eigenvalues are only
approximate representations of ionization energies, incidentally, at this value
also the density of states agrees well with the photoelectron spectra. However,
increasing (\alpha) to values for which the energy of the lowest unoccupied
molecular orbital matches the experimental electron affinity in the gas phase
worsens both the interface dipole and the density of states. Our results imply
that semi-local DFT calculations may often be adequate for conjugated organic
molecules on metal surfaces and that the much more computationally demanding
hybrid functionals yield only small improvements.


title: A short note on the axiomatic requirements of uncertainty measure

abstract:
  In this note, we argue that the axiomatic requirement of range to the measure
of aggregated total uncertainty (ATU) in Dempster-Shafer theory is not
reasonable.


title: Restricting Higgs bundles to curves

abstract:
  We determine some classes of varieties X - that include the varieties with
numerically effective tangent bundle - satisfying the following property: if E
is a Higgs bundle such that f*E is semistable for any morphism f from a smooth
projective curve to X, then E is slope semistable and the discriminant of E is
zero in H4(X,R). We also characterize some classes of varieties such that the
underlying vector bundle of a slope semistable Higgs bundle is always slope
semistable.


title: Balance of enthalpy and entropy in depletion forces

abstract:
  Solutes added to solutions often dramatically impact molecular processes
ranging from the suspension or precipitation of colloids to biomolecular
associations and protein folding. Here we revisit the origins of the effective
attractive interactions that emerge between and within macromolecules immersed
in solutions containing cosolutes that are preferentially excluded from the
macromolecular interfaces. Until recently, these depletion forces were
considered to be entropic in nature, resulting primarily from the tendency to
increase the space available to the cosolute. However, recent experimental
evidence indicates the existence of additional, energetically-dominated
mechanisms. In this review we follow the emerging characteristics of these
different mechanisms. By compiling a set of available thermodynamic data for
processes ranging from protein folding to protein-protein interactions, we show
that excluded cosolutes can act through two distinct mechanisms that correlate
to a large extent with their molecular properties. For many polymers at low to
moderate concentrations the steric interactions and molecular crowding effects
dominate, and the mechanism is entropic. To contrast, for many small excluded
solutes, such as naturally occurring osmolytes, the mechanism is dominated by
favorable enthalpy, whereas the entropic contribution is typically unfavorable.
We review the available models for these thermodynamic mechanisms, and comment
on the need for new models that would be able to explain the full range of
observed depletion forces.


title: Conditions for the vanishing of the genus-2 G-function

abstract:
  In this paper we give some sufficient conditions for the vanishing of the
genus-2 G-function, which was introduced by B. Dubrovin, S. Liu and Y. Zhang in
[DLZ]. As a corollary we prove their conjecture for the vanishing of the
genus-2 G-function for ADE singularities.


title:
Development of Biofeedback Mechanisms in a Procedural Environment Using
  Biometric Sensors

abstract:
  Before the computer age, games were played in the physical world where
players would have to interact with real objects and each other, triggering a
series of emotions. Nowadays, the computer games have become one of the most
popular forms of entertainment due to their high-level of attraction and
accessibility. However, the game industry is always trying to find new ways of
making games more interactive and exciting in order to attract new players, and
one of the recent trends on the area of human-computer interaction is
Biofeedback.
  The goal of this dissertation is to study different approaches on the use of
indirect biofeedback within videogames, with the purpose of creating a better
human-computer interaction, and provide a more appealing and immersive user
experience. For this, we focused on the development of a framework capable of
testing different indirect biofeedback models within a specified game, in order
to assess the effect of each of these variations on the user experience. This
framework is game independent, with the intention of being used on further
studies.


title: Gauge Invariant Photon Mass Induced by Vortex Gauge Interactions

abstract:
  We propose a vortex gauge field theory in which the curl of a Dirac fermion
current density plays the role of the pseudovector charge density. In this
field-theoretic model, vortex interactions are mediated by a single scalar
gauge boson in its antisymmetric tensor formulation. We show that these long
range vortex interactions induce a gauge invariant photon mass in the one-loop
effective action. The fermion loop generates a coupling between photons and the
vortex gauge boson, which acquires thus charge. This coupling represents also
an induced, gauge invariant, topological mass for the photons, leading to the
Meissner effect. The one-loop effective equations of motion for the charged
vortex gauge boson are the London equations. We propose thus vortex gauge
interactions as an alternative, topological mechanism for superconductivity in
which no spontaneous symmetry breaking is involved.


title: Poly-Cauchy and Peters mixed-type polynomials

abstract:
  The Peters polynomials are a generalization of Boole polynomials. In this
paper, we consider Peters and poly-Cauchy mixed type polynomials and
investigate the properties of those polynomials which are derived from umbral
calculus. Finally, we give various identities of those polynomials associated
with special polynomials.


title:
An extensive adiabatic invariant for the Klein-Gordon model in the
  thermodynamic limit

abstract:
  We construct an extensive adiabatic invariant for a Klein-Gordon chain in the
thermodynamic limit. In particular, given a fixed and sufficiently small value
of the coupling constant $a$, the evolution of the adiabatic invariant is
controlled up to times scaling as $\beta^{1/\sqrt{a}}$ for any large enough
value of the inverse temperature $\beta$. The time scale becomes a stretched
exponential if the coupling constant is allowed to vanish jointly with the
specific energy. The adiabatic invariance is exhibited by showing that the
variance along the dynamics, i.e. calculated with respect to time averages, is
much smaller than the corresponding variance over the whole phase space, i.e.
calculated with the Gibbs measure, for a set of initial data of large measure.
All the perturbative constructions and the subsequent estimates are consistent
with the extensive nature of the system.


title:
Simultaneous event detection rates by electromagnetic and gravitational
  wave detectors in the Advanced Era of LIGO and Virgo

abstract:
  We present several estimates of the rate of simultaneous detection of the
merging of a binary system of neutron stars in the electromagnetic and the
gravitational wave domains, assuming that they produce short GRBs. We have
based our estimations on a carefully selected sample of short gamma-ray bursts,
corrected from redshift effects. The results presented in this paper are based
on actual observation only. In the electromagnetic spectrum, we considered
observations by current (Swift and Fermi}) and future (LOFT and SVOM) missions.
In the gravitational wave domain, we consider detections by the Advanced Virgo
instrument alone and the network of both Advanced LIGO and Advanced Virgo. We
discuss on the possible biases present in our sample, and how to fix them. For
present missions, assuming a detection in the following years, we find that we
should observe simultaneously between 0.11 and 4.2 gravitational wave events
per year with Swift} and Fermi} respectively. For future projects (LOFT and
SVOM) we can expect less than one common detection per year. We check the
consistency of our results with several previously published rate of detection
of gravitational waves.


title:
Robotic observations of the most eccentric spectroscopic binary in the
  sky

abstract:
  The visual A component of the Gliese 586AB system is a double-lined
spectroscopic binary consisting of two cool stars with the exceptional orbital
eccentricity of 0.976. Such an extremely eccentric system may be important for
our understanding of low-mass binary formation. We present a total of 598
high-resolution echelle spectra from our robotic facility STELLA from 2006-2012
which we used to compute orbital elements of unprecedented accuracy. The orbit
constrains the eccentricity to 0.97608+/-0.00004 and the orbital period to
889.8195+/-0.0003d. The masses of the two components are 0.87+/-0.05 Msun and
0.58+/-0.03 Msun if the inclination is 5+/-1.5degr as determined from
adaptive-optics images, that is good to only 6% due to the error of the
inclination although the minimum masses reached a precision of 0.3%. The flux
ratio Aa:Ab in the optical is betwee n 30:1 in Johnson-B and 11:1 in I. Radial
velocities of the visual B-component (K0-1V) appear constant to within 130 m/s
over six years. Sinusoidal modulations of Teff of Aa with an amplitude of apprx
55 K are seen with the orbital period. Component Aa appears warmest at
periastron and coolest at apastron, indicating atmospheric changes induced by
the high orbital eccentricity. No light variations larger than approximately 4
mmag are detected for A, while a photometric period of 8.5+/-0.2 d with an
amplitude of 7 mmag is discovered for the active star B, which we interpret to
be its rotation period. We estimate an orbital period of approx 50,000 yr for
the AB system. The most likely age of the AB system is >=2 Gyr, while the
activity of the B component, if it were a single star, would imply 0.5 Gyr.
Both Aa and B are matched with single-star evolutionary tracks of their
respective mass.


title:
Vortex Filament Equation and Non-Lightlike Space Curves in Minkowski
  3-space

abstract:
  In this paper, the parallel transport frames over non-lightlike curves in
Minkowski 3-space are introduced. Evolution equations of these frames with
respect to arc length and time are calculated over the space of these curves.
Then the equivalence of the non-linear Schr\"odinger equation and non-linear
heat system to the vortex filament equation for the binormal motion of
non-lightlike curves is shown by use of the parallel frames and their evolution
equations.


title:
Various methods of optimizing control pulses for quantum systems with
  decoherence

abstract:
  We study three methods of obtaining an approximation of unitary evolution of
a quantum system under decoherence. We use three methods of optimizing the
control pulses: genetic optimization, approximate evolution method and
approximate gradient method. To model the noise in the system we use the
Lindblad equaiton. We obtain results showing that genetic optimization may give
a better approximation of a unitary evolution in the case of high noise.


title: A road map for synthesizing the scaling patterns in ecology

abstract:
  Ecology studies biodiversity in its variety and complexity. It describes how
species distribute and perform in response to environmental changes. Ecological
processes and structures are highly complex and adaptive. In order to quantify
emerging ecological patterns and investigate their hidden mechanisms, we need
to rely on the simplicity of mathematical language. This becomes especially
apparent when dealing with scaling patterns in ecology. Indeed, nearly all of
ecological patterns are scale dependent. Such scale dependence hampers our
predictive power and creates problems in our inference. This challenge calls
for a clear and fundamental understanding of how and why ecological patterns
change across scales. As Simon Levin stated in his MacArthur Award lecture, the
problem of relating phenomena across scales is the central problem in ecology
and other natural sciences. It has become clear that there is currently a drive
in ecology and complexity science to develop new quantitative approaches that
are suitable for analysing and forecasting patterns of ecological systems. Here
I provide a road map for future works on synthesizing the scaling patterns in
ecology, aiming (i) to collect and sort a diverse array of ecological patterns,
(ii) to present the dominant parametric forms of how these patterns change
across spatial and temporal scales, (iii) to detect the processes and
mechanisms using mathematical models, and finally (iv) to probe the physical
meaning of these scaling patterns. This road map is divided into three parts
and covers three main concepts of scale in ecology: heterogeneity, hierarchy
and size. Using scale as a thread, this road map and its following works weave
the kaleidoscope of ecological scaling patterns into a cohesive whole.


title: Automatic code generator for higher order integrators

abstract:
  Some explicit algorithms for higher order symplectic integration of a large
class of Hamilton's equations have recently been discussed by Mushtaq \emph{et.
al}. Here we present a Python program for automatic numerical implementation of
these algorithms for a given Hamiltonian, both for double precision and
multiprecision computations. We provide examples of how to use this program,
and illustrate behaviour of both the code generator and the generated solver
module(s).


title:
A novel method for calculating relative free energy of similar molecules
  in two environments

abstract:
  Calculating relative free energies is a topic of substantial interest and has
many applications including solvation and binding free energies, which are used
in computational drug discovery. However, there remain the challenges of
accuracy, simple implementation, robustness and efficiency, which prevent the
calculations from being automated and limit their use in computational drug
discovery. Here we present an exact and complete decoupling analysis in which
the partition functions of the compared systems decompose into the partition
functions of the common and different subsystems. This decoupling analysis is
applicable to submolecules with coupled degrees of freedom and to any potential
function, enabling to remove less terms in the transformation. Then we show
mathematically, in the context of partition function decoupling, that the two
compared systems can be simulated separately, eliminating the need to design a
composite system. We demonstrate the decoupling analysis and the separate
transformations in an MD calculation of relative free energy for a general
force field which is in agreement with experiments. We present a unified soft
core technique that will ensure the monotonicity of the numerically integrated
function. Finally, we show that when the systems have rugged energy landscape
they can be equilibrated without introducing another sampling dimension. The
concepts presented in the article have implications in accuracy, efficiency,
simplicity and robustness of free energy calculations.


title: Parity odd equilibrium partition function in 2+1 dimensions

abstract:
  We use Schwinger's proper time method to compute the parity odd contributions
to the U(1) current and energy-momentum tensor of an ideal gas of fermions in
2+1 dimensions in the presence of static gauge and gravitational backgrounds.
From these results the equilibrium partition function at first order in the
derivative expansion is explicitly obtained by integration. The form of the
computed partition function is consistent with general arguments based on
Kaluza-Klein and gauge invariance.


title:
Neighbor Joining Plus - algorithm for phylogenetic tree reconstruction
  with proper nodes assignment

abstract:
  Most of major algorithms for phylogenetic tree reconstruction assume that
sequences in the analyzed set either do not have any offspring, or that parent
sequences can maximally mutate into just two descendants. The graph resulting
from such assumptions forms therefore a binary tree, with all the nodes labeled
as leaves. However, these constraints are unduly restrictive as there are
numerous data sets with multiple offspring of the same ancestors. Here we
propose a solution to analyze and visualize such sets in a more intuitive
manner. The method reconstructs phylogenetic tree by assigning the sequences
with offspring as internal nodes, and the sequences without offspring as leaf
nodes. In the resulting tree there is no constraint for the number of adjacent
nodes, which means that the solution tree needs not to be a binary graph only.
The subsequent derivation of evolutionary pathways, and pair-wise mutations,
are then an algorithmically straightforward, with edge's length corresponding
directly to the number of mutations. Other tree reconstruction algorithms can
be extended in the proposed manner, to also give unbiased topologies.


title:
Competition between loss channels in quantum-dot cavity systems:
  unconventional consequences

abstract:
  We demonstrate that in quantum-dot cavity systems, the interplay between
acoustic phonons and photon losses introduces novel features and characteristic
dependencies in the system dynamics. In particular, the combined action of both
loss mechanisms strongly affects the transition from the weak to the strong
coupling regime as well as the shape of Mollow-type spectra in untypical ways.
For weak coupling, where the spectra degenerate to a single line, we predict
that their widths decrease with rising temperature.


title: If graphynes turn into graphene: the thermal stability study

abstract:
  The thermal stability of $\alpha$-, $\beta$-, 6,6,12-graphyne and graphdiyne
was studied by a statistic model, which was seriously tested by classical
molecular dynamics simulations. By first-principles calculations of related
potential energy curves, the model predicts that all the lifetime of
free-standing single layer graphynes considered is more than 10$^{44}$ years at
room temperature. When the temperature gets up to 1000 K, they are still very
stable, but quickly turn into graphene if the temperature is about 2000 K


title:
Top-seeded solution growth of SrTiO3 crystals and phase diagram studies
  in the SrO-TiO2 system

abstract:
  The TiO2 rich part of the (1-x) SrO + x TiO2 phase diagram 0.5 <= x <= 1.0
was redetermined and the eutectic point between SrTiO3 and TiO2 was found at
x_eut=0.7700+/-0.0001; T_eut=(1449+/-3) deg C. From TiO2 rich melt solutions,
x=0.75 centimeter-sized single crystals could be grown. The best crystals with
etch pit density <2 x 10^4/cm^2 were obtained for growth directions <110> and
<100>. AFM investigation of the interface reveals layer-by-layer growth.


title: Finding Dominators via Disjoint Set Union

abstract:
  The problem of finding dominators in a directed graph has many important
applications, notably in global optimization of computer code. Although linear
and near-linear-time algorithms exist, they use sophisticated data structures.
We develop an algorithm for finding dominators that uses only a "static tree"
disjoint set data structure in addition to simple lists and maps. The algorithm
runs in near-linear or linear time, depending on the implementation of the
disjoint set data structure. We give several versions of the algorithm,
including one that computes loop nesting information (needed in many kinds of
global code optimization) and that can be made self-certifying, so that the
correctness of the computed dominators is very easy to verify.


title: Models of the hadron structure and Data of the TOTEM Collaboration

abstract:
  The region of the small and large momentum transfer is examined from a view
point of the contribution of the different parts of the scattering amplitude,
soft and hard pomeron, and odderon contribution. The new model taking into
account the different moments of the General Parton Distribution of the hadron
is presented. The comparison with the preliminary data of the TOTEM
Collaboration at an energy of 7 TeV is made.


title: TempoNest: A Bayesian approach to pulsar timing analysis

abstract:
  A new Bayesian software package for the analysis of pulsar timing data is
presented in the form of TempoNest which allows for the robust determination of
the non-linear pulsar timing solution simultaneously with a range of additional
stochastic parameters. This includes both red spin noise and dispersion measure
variations using either power law descriptions of the noise, or through a
model-independent method that parameterises the power at individual frequencies
in the signal. We use TempoNest to show that at noise levels representative of
current datasets in the European Pulsar Timing Array (EPTA) and International
Pulsar Timing Array (IPTA) the linear timing model can underestimate the
uncertainties of the timing solution by up to an order of magnitude. We also
show how to perform Bayesian model selection between different sets of timing
model and stochastic parameters, for example, by demonstrating that in the
pulsar B1937+21 both the dispersion measure variations and spin noise in the
data are optimally modelled by simple power laws. Finally we show that not
including the stochastic parameters simultaneously with the timing model can
lead to unpredictable variation in the estimated uncertainties, compromising
the robustness of the scientific results extracted from such analysis.


title: Dynamics and termination cost of spatially coupled mean-field models

abstract:
  This work is motivated by recent progress in information theory and signal
processing where the so-called `spatially coupled' design of systems leads to
considerably better performance. We address relevant open questions about
spatially coupled systems through the study of a simple Ising model. In
particular, we consider a chain of Curie-Weiss models that are coupled by
interactions up to a certain range. Indeed, it is well known that the pure
(uncoupled) Curie-Weiss model undergoes a first order phase transition driven
by the magnetic field, and furthermore, in the spinodal region such systems are
unable to reach equilibrium in sub-exponential time if initialized in the
metastable state. By contrast, the spatially coupled system is, instead, able
to reach the equilibrium even when initialized to the metastable state. The
equilibrium phase propagates along the chain in the form of a travelling wave.
Here we study the speed of the wave-front and the so-called `termination
cost'--- \textit{i.e.}, the conditions necessary for the propagation to occur.
We reach several interesting conclusions about optimization of the speed and
the cost.


title:
On the spectral properties of a class of $H$-selfadjoint random matrices
  and the underlying combinatorics

abstract:
  An expansion of the Weyl function of a $H$-selfadjoint random matrix with one
negative square is provided. It is shown that the coefficients converge to a
certain generalization of Catlan numbers. Properties of this generalization are
studied, in particular, a combinatorial interpretation is given.


title: Ground state of the double-well condensate for quantum metrology

abstract:
  We discuss theoretically the ground state of a Bose-Einstein condensate with
attractive atom-atom interactions in a double-well trap as a starting point of
Heisenberg-limited atom interferometry. The dimensionless parameter governing
the quality of the ground state for this purpose is identified. The
near-degeneracy between the ground state and the first excited state severely
curtails the prospects of the thermally prepared ground state in quantum
metrology.


title: Elliptic genera and real Jacobi forms

abstract:
  We construct real Jacobi forms with matrix index using path integrals. The
path integral expressions represent elliptic genera of two-dimensional N=(2,2)
supersymmetric theories. They arise in a family labeled by two integers N and k
which determine the central charge of the infrared fixed point through the
formula c=3N(1+ 2N/k). We decompose the real Jacobi form into a mock modular
form and a term arising from the continuous spectrum of the conformal field
theory. We argue that the Jacobi form represents the elliptic genus of a theory
defined on a 2N dimensional background with U(N) isometry, containing a complex
projective space section, a circle fiber and a linear dilaton direction. We
also present formulas for the elliptic genera of orbifolds of these models.