title: Evolution to the Quark-Gluon Plasma

abstract:
  Theoretical studies on the early-time dynamics in the ultra-relativistic
heavy-ion collisions are reviewed including pedagogical introductions on the
initial condition with small-x gluons treated as a color glass condensate, the
bottom-up thermalization scenario, plasma/glasma instabilities, basics of some
formulations such as the kinetic equations and the classical statistical
simulation. More detailed discussions follow to make an overview of recent
developments on the fast isotropization, the onset of hydrodynamics, and the
transient behavior of momentum spectral cascades.


title:
Enhanced Robot Audition Based on Microphone Array Source Separation with
  Post-Filter

abstract:
  We propose a system that gives a mobile robot the ability to separate
simultaneous sound sources. A microphone array is used along with a real-time
dedicated implementation of Geometric Source Separation and a post-filter that
gives us a further reduction of interferences from other sources. We present
results and comparisons for separation of multiple non-stationary speech
sources combined with noise sources. The main advantage of our approach for
mobile robots resides in the fact that both the frequency-domain Geometric
Source Separation algorithm and the post-filter are able to adapt rapidly to
new sources and non-stationarity. Separation results are presented for three
simultaneous interfering speakers in the presence of noise. A reduction of log
spectral distortion (LSD) and increase of signal-to-noise ratio (SNR) of
approximately 10 dB and 14 dB are observed.


title: The simplest possible bouncing quantum cosmological model

abstract:
  We present and expand the simplest possible quantum cosmological bouncing
model already discussed in previous works: the trajectory formulation of
quantum mechanics applied to cosmology (through the Wheeler-De Witt equation)
in the FLRW minisuper- space without spatial curvature. The initial conditions
that were previously assumed were such that the wave function would not change
its functional form but instead provide a dynamics to its parameters. Here, we
consider a more general situation, in practice con- sisting of modified
Gaussian wave functions, aiming at obtaining a non singular bounce from a
contracting phase. Whereas previous works consistently obtain very symmetric
bounces, we find that it is possible to produce highly non symmetric solutions,
and even cases for which multiple bounces naturally occur. We also introduce a
means of treating the shear in this category of models by quantizing in the
Bianchi I minisuperpace.


title:
The intersection cohomology of the Satake compactification of ${\mathcal
  A}_g$ for $g\le 4$

abstract:
  We completely determine the intersection cohomology of the Satake
compactifications of the moduli space of principally polarized abelian
varieties in genera 2,3,4, except for the degree 10 intersection cohomology in
genus 4. We also determine all the ingredients appearing in the decomposition
theorem applied to the map from a toroidal compactification to the Satake
compactification in these genera. As a byproduct we obtain in addition several
results about the intersection cohomology of the link bundles involved.


title: Optimal Link Adaptation for Multicarrier Communication Systems

abstract:
  Link adaptation is the terminology used to describe techniques that improve
multicarrier communication systems performance by dynamically adapting the
transmission parameters, i.e., transmit power and number of bits per
subcarrier, to the changing quality of the wireless link. The research
literature has focused on single objective optimization techniques to optimize
the multicarrier communication systems performance, e.g., maximizing the
throughput/capacity or minimizing the transmit power subject to a set of
constraints. In this dissertation, we adopt a novel optimization concept,
namely multiobjective optimization, where our objective is to simultaneously
optimize the conflicting and incommensurable throughput and power objectives.
  More specifically, in some of the following Chapters, we propose novel
algorithms that jointly maximize the multicarrier system throughput and
minimize its total transmit power subject to quality-of-service, total transmit
power, and maximum allocated bits per subcarrier constraints. The proposed
algorithms require prior knowledge about the importance of the competing
objective functions in terms of pre-determined weighting coefficients, or they
can adapt the weighting coefficients during the solution process while meeting
the constraints, in order to reduce the computational complexity. Simulation
results show significant performance gains in terms of the achieved throughput
and transmit power when compared to single optimization approaches, at the cost
of no additional complexity.


title: Hand Segmentation for Hand-Object Interaction from Depth map

abstract:
  Hand segmentation for hand-object interaction is a necessary preprocessing
step in many applications such as augmented reality, medical application, and
human-robot interaction. However, typical methods are based on color
information which is not robust to objects with skin color, skin pigment
difference, and light condition variations. Thus, we propose hand segmentation
method for hand-object interaction using only a depth map. It is challenging
because of the small depth difference between a hand and objects during an
interaction. To overcome this challenge, we propose the two-stage random
decision forest (RDF) method consisting of detecting hands and segmenting
hands. To validate the proposed method, we demonstrate results on the publicly
available dataset of hand segmentation for hand-object interaction. The
proposed method achieves high accuracy in short processing time comparing to
the other state-of-the-art methods.


title:
Pertinency of Hopf actions and quotient categories of Cohen-Macaulay
  algebras

abstract:
  We study invariants and quotient categories of fixed subrings of
Artin-Schelter regular algebras under Hopf algebra actions.


title: Motion Planning for Fluid Manipulation using Simplified Dynamics

abstract:
  We present an optimization-based motion planning algorithm to compute a
smooth, collision-free trajectory for a manipulator used to transfer a liquid
from a source to a target container. We take into account fluid dynamics
constraints as part of trajectory computation. In order to avoid the high
complexity of exact fluid simulation, we introduce a simplified dynamics model
based on physically inspired approximations and system identification. Our
optimization approach can incorporate various other constraints such as
collision avoidance with the obstacles, kinematic and dynamics constraints of
the manipulator, and fluid dynamics characteristics. We demonstrate the
performance of our planner on different benchmarks corresponding to various
obstacles and container shapes. Furthermore, we also evaluate its accuracy by
validating the motion plan using an accurate but computationally costly
Navier-Stokes fluid simulation.


title: Pfaffian States in Coupled Atom-Cavity Systems

abstract:
  Coupled atom-cavity arrays, such as those described by the Jaynes-Cummings
Hubbard model, have the potential to emulate a wide range of condensed matter
phenomena. In particular, the strongly correlated states of the fractional
quantum Hall effect can be realised. At some filling fractions, the fraction
quantum Hall effect has been shown to possess ground states with non-abelian
excitations. The most well studied of these states is the Pfaffian state of
Moore and Read, which is the groundstate of a Hall Liquid with a 3-body
interaction. In this paper we show how an effective 3-body interaction can be
generated within the Cavity QED framework, and that a Pfaffian-like groundstate
of these systems exists.


title:
The Virasoro vertex algebra and factorization algebras on Riemann
  surfaces

abstract:
  This paper focuses on the connection of holomorphic two-dimensional
factorization algebras and vertex algebras which has been made precise in the
forthcoming book of Costello-Gwilliam. We provide a construction of the
Virasoro vertex algebra starting from a local Lie algebra on the complex plane.
Moreover, we discuss an extension of this factorization algebra to a
factorization algebra on the category of Riemann surfaces. The factorization
homology of this factorization algebra is computed as are the correlation
functions. We provide an example of how the Virasoro factorization algebra
implements conformal symmetry of the beta-gamma system using the method of
effective BV quantization.


title:
Three-dimensional simulations of long duration gamma-ray burst jets:
  time scales from variable engines

abstract:
  Gamma-ray burst light curves are characterized by marked variability, each
showing unique properties. The origin of such variability, at least for a
fraction of long GRBs, may be the result of an unsteady central engine. It is
thus important to study the effects that an episodic central engine has on the
jet propagation and, eventually, on the prompt emission within the collapsar
scenario. Thus, in this study we follow the interaction of pulsed outflows with
their progenitor stars with hydrodynamic numerical simulations in both two and
three dimensions. We show that the propagation of unsteady jets is affected by
the interaction with the progenitor material well after the break-out time,
especially for jets with long quiescent times, comparable to or larger than a
second. We also show that this interaction can lead to an asymmetric behavior
in which pulse durations and quiescent periods are systematically different.
After the pulsed jets drill through the progenitor and the interstellar medium,
we find that, on average, the quiescent epochs last longer than the pulses
(even in simulations with symmetrical active and quiescent engine times). This
could explain the asymmetry detected in the light curves of long-quiescent
times duration gamma-ray bursts.


title:
Biologically inspired model simulating visual pathways and cerebellum
  function in human - Achieving visuomotor coordination and high precision
  movement with learning ability

abstract:
  In recent years, the interdisciplinary research between information science
and neuroscience has been a hotspot. In this paper, based on recent biological
findings, we proposed a new model to mimic visual information processing, motor
planning and control in central and peripheral nervous systems of human. Main
steps of the model are as follows: 1) Simulating "where" pathway in human: the
Selective Search method is applied to simulate the function of human dorsal
visual pathway to localize object candidates; 2) Simulating "what" pathway in
human: a Convolutional Deep Belief Network is applied to simulate the
hierarchical structure and function of human ventral visual pathway for object
recognition; 3) Simulating motor planning process in human: habitual motion
planning process in human is simulated, and motor commands are generated from
the combination of control signals from past experiences; 4) Simulating precise
movement control in human: calibrated control signals, which mimic the
adjustment for movement from cerebellum in human, are generated and updated
from calibration of movement errors in past experiences, and sent to the
movement model to achieve high precision. The proposed framework mimics
structures and functions of human recognition, visuomotor coordination and
precise motor control. Experiments on object localization, recognition and
movement control demonstrate that the new proposed model can not only
accomplish visuomotor coordination tasks, but also achieve high precision
movement with learning ability. Meanwhile, the results also prove the validity
of the introduced mechanisms. Furthermore, the proposed model could be
generalized and applied to other systems, such as mechanical and electrical
systems in robotics, to achieve fast response, high precision movement with
learning ability.


title:
Systematic Low-Thrust Trajectory Optimization for a Multi-Rendezvous
  Mission using Adjoint Scaling

abstract:
  A deep-space exploration mission with low-thrust propulsion to rendezvous
with multiple asteroids is investigated. Indirect methods, based on the optimal
control theory, are implemented to optimize the fuel consumption. The
application of indirect methods for optimizing low-thrust trajectories between
two asteroids is briefly given. An effective method is proposed to provide
initial guesses for transfers between close near-circular near-coplanar orbits.
The conditions for optimality of a multi-asteroid rendezvous mission are
determined. The intuitive method of splitting the trajectories into several
legs that are solved sequentially is applied first. Then the results are
patched together by a scaling method to provide a tentative guess for
optimizing the whole trajectory. Numerical examples of optimizing three probe
exploration sequences that contain a dozen asteroids each demonstrate the
validity and efficiency of these methods.


title: H^1_ar for arithmetic surface is finite

abstract:
  For an arithmetic surface X and a Weil divisor $D$, there are natural
arithmetic cohomology groups $H_{\mathrm{ar}}^i(X, \mathcal O_X (D))$
$(i=0,1,2)$. Using ind-pro topology on adelic space $\mathbb A_{X,
012}^{\mathrm{ar}}$, we show that $H_{\mathrm{ar}}^0(X, \mathcal O_X (D))$ is
discrete, $H_{\mathrm{ar}}^1(X, \mathcal O_X (D))$ is finite, and
$H_{\mathrm{ar}}^2(X, \mathcal O_X (D))$ is compact. Moreover, we prove that
all possible summations of canonical subspaces $\mathbb
A_{X,i}^{\mathrm{ar}}(D),$ $\mathbb A_{X, kl}^{\mathrm{ar}}(D)$ $(i,k,l=0,1,2)$
are closed in $\mathbb A_{X,012}^{\mathrm{ar}}$, and hence complete our proof
of topological dualities of among $H^i_{\mathrm{ar}}$'s.


title: Stock Selection as a Problem in Phylogenetics -- Evidence from the ASX

abstract:
  We report the results of fifteen sets of portfolio selection simulations
using stocks in the ASX200 index for the period May 2000 to December 2013. We
investigated five portfolio selection methods, randomly and from within
industrial groups, and three based on neighbor-Net phylogenetic networks. We
report that using random, industrial groups, or neighbor-Net phylogenetic
networks alone rarely produced statistically significant reduction in risk,
though in four out of the five cases in which it did so, the portfolios
selected using the phylogenetic networks had the lowest risk. However, we
report that when using the neighbor-Net phylogenetic networks in combination
with industry group selection that substantial reductions in portfolio return
spread were achieved.


title:
Arithmetic Central Extensions and Reciprocity Laws for Arithmetic
  Surface

abstract:
  Three types of reciprocity laws for arithmetic surfaces are established. For
these around a point or along a vertical curve, we first construct $K_2$ type
central extensions, then introduce reciprocity symbols, and finally prove the
law as an application of Parshin-Beilinson's theory of adelic complex. For
reciprocity law along a horizontal curve, we first introduce a new type of
arithmetic central extensions, then apply our arithmetic adelic cohomology
theory and arithmetic intersection theory to prove the related reciprocity law.
  All this can be interpreted within the framework of arithmetic central
extensions. We add an appendix to deal with some basic structures of such
extensions.


title:
Measuring the distance-redshift relation with the cross-correlation of
  gravitational wave standard sirens and galaxies

abstract:
  Gravitational waves from inspiraling compact binaries are known to be an
excellent absolute distance indicator, yet it is unclear whether
electromagnetic counterparts of these events are securely identified for
measuring their redshifts, especially in the case of black hole-black hole
mergers such as the one recently observed with the Advanced LIGO. We propose to
use the cross-correlation between spatial distributions of gravitational wave
sources and galaxies with known redshifts as an alternative means of
constraining the distance-redshift relation from gravitational waves. In our
analysis, we explicitly include the modulation of the distribution of
gravitational wave sources due to weak gravitational lensing. We show that the
cross-correlation analysis in next-generation observations will be able to
tightly constrain the relation between the absolute distance and the redshift,
and therefore constrain the Hubble constant as well as dark energy parameters.


title:
Investigation of superconducting and normal-state properties of the
  filled-skutterudite system PrPt$_{4}$Ge$_{12-x}$Sb$_{x}$

abstract:
  We report a study of the superconducting and normal-state properties of the
filled-skutterudite system PrPt$_{4}$Ge$_{12-x}$Sb$_x$. Polycrystalline samples
with Sb concentrations up to $x =$ 5 were synthesized and investigated by means
of x-ray diffraction, electrical resistivity, magnetic susceptibility, and
specific heat measurements. We observed a suppression of superconductivity with
increasing Sb substitution up to $x =$ 4, above which, no signature of
superconductivity was observed down to 140 mK. The Sommerfeld coefficient,
$\gamma$, of superconducting specimens decreases with increasing $x$ up to $x
=$ 3, suggesting that superconductivity may depend on the density of electronic
states in this system. The specific heat for $x =$ 0.5 exhibits an exponential
temperature dependence in the superconducting state, reminiscent of a nodeless
superconducting energy gap. We observed evidence for a weak "rattling" mode
associated with the Pr ions, characterized by an Einstein temperature
$\Theta_{\mathrm{E}} \sim$ 60 K for 0 $\leq x \leq$ 5; however, the rattling
mode may not play any role in suppressing superconductivity.


title:
Detection of gamma-ray emission from globular clusters M 15, NGC 6397,
  NGC 5904, NGC 6218 and NGC 6139 with Fermi-LAT

abstract:
  In the third Fermi catalogue (3FGL) there are sixteen gamma-ray globular
clusters. After analyzing the recent released Pass 8 data of Fermi Large Area
Telescope (LAT), we report the discovery of significant gamma-ray emission from
M 15 and NGC 6397, confirm that NGC 5904 is a gamma-ray emitter and find
evidence of gamma-ray emission from NGC 6218 and NGC 6139. Inter- estingly, in
the globular clusters M 15, NGC 6397 and NGC 5904, millisecond pulsars (MSPs)
have been found in radio or X-rays, which are strongly in support of the MSP
origin of the gamma-ray emission. However, due to the relative low luminosity
of the gamma-ray emission we do not find any evidence for the gamma-ray
pulsation or flux variability of these sources.


title:
Quasiconformal Group Approach to Higher Spin Algebras, their
  Deformations and Supersymmetric Extensions

abstract:
  The quasiconformal method provides us with a unified approach to the
construction of minimal unitary representations (minrep) of noncompact groups,
their deformations as well as their supersymmetric extensions. We review the
quasiconformal construction of the minrep of SO(d,2), its deformations and
their applications to unitary realizations of AdS_{(d+1)}/CFT_d higher spin
algebras and their deformations for arbitrary d and supersymmetric extensions
for dimensions d less than seven. AdS_{(d+1)}/CFT_d higher spin algebras, their
deformations and supersymmetric extensions are given by the enveloping algebras
of the quasiconformal realizations of the minrep, its deformations and
supersymmetric extensions, respectively, and are in one-to-one correspondence
with massless conformal fields for arbitrary d and massless conformal
supermultiplets for dimensions d less than seven.


title:
Non-Markov property of afterpulsing effect in single-photon avalanche
  detector

abstract:
  Single-photon avalanche photodiode(SPAD) has been widely used in researching
of quantum optics. Afterpulsing effect, which is an intrinsic character of
SPAD, affects the system performance in most of the experiments and needs to be
carefully handled. For a long time, afterpulsing has been presumed to be
determined by the pre-ignition avalanche. We studied the afterpulsing effect of
a commercial InGaAs/InP SPAD (APD: Princeton Lightwave PGA-300) and
demonstrated that its afterpulsing is non-Markov, which has memory effect of
the avalanching history. Theoretical analysis and the experimental results
clearly indicate that the embodiment of this memory effect is the afterpulsing
probability, which increases as the number of ignition-avalanche pulses
increase. The conclusion makes the principle of afterpulsing effect clearer and
is instructive to the manufacturing processes and afterpulsing evaluation of
high-count-rate SPADs. It can also be regarded as an fundamental premise to
handle the afterpulsing signals in many applications, such as quantum
communication and quantum random number generator.


title:
Global dynamics above the first excited energy for the nonlinear
  Schr\"odinger equation with a potential

abstract:
  Consider the focusing nonlinear Schr\"odinger equation with a potential with
a single negative eigenvalue. It has solitons with negative small energy, which
are asymptotically stable, and solitons with positive large energy, which are
unstable. We classify the global dynamics into 9 sets of solutions in the phase
space including both solitons, restricted by small mass, radial symmetry, and
an energy bound slightly above the second lowest one of solitons. The
classification includes a stable set of solutions which start near the first
excited solitons, approach the ground states locally in space for large time
with large radiation to the spatial infinity, and blow up in negative finite
time.


title: Spectral term structure models

abstract:
  This note studies a certain stochastic evolution equation in the space of
probability measures, including existence and uniqueness results. A solution of
this equation gives rise, in a natural way, to an interest rate term structure
model, in the same spirit as the Heath-Jarrow-Morton framework.


title:
Mid- and far-infrared properties of Spitzer Galactic bubbles revealed by
  the AKARI all-sky surveys

abstract:
  We have carried out a statistical study on the mid- and far-infrared (IR)
properties of Galactic IR bubbles observed by Spitzer. Using the Spitzer 8
${\mu}{\rm m}$ images, we estimated the radii and covering fractions of their
shells, and categorized them into closed, broken and unclassified bubbles with
our data analysis method. Then, using the AKARI all-sky images at wavelengths
of 9, 18, 65, 90, 140 and 160 ${\mu}{\rm m}$, we obtained the spatial
distributions and the luminosities of polycyclic aromatic hydrocarbon (PAH),
warm and cold dust components by decomposing 6-band spectral energy
distributions with model fitting. As a result, 180 sample bubbles show a wide
range of the total IR luminosities corresponding to the bolometric luminosities
of a single B-type star to many O-type stars. For all the bubbles, we
investigated relationships between the radius, luminosities and luminosity
ratios, and found that there are overall similarities in the IR properties
among the bubbles regardless of their morphological types. In particular, they
follow a power-law relation with an index of $\sim$3 between the total IR
luminosity and radius, as expected from the conventional picture of the
Str$\rm{\ddot{o}}$mgren sphere. The exceptions are large broken bubbles; they
indicate higher total IR luminosities, lower fractional luminosities of the PAH
emission, and dust heating sources located nearer to the shells. We discuss the
implications of those differences for a massive star-formation scenario.


title:
Probing nuclear bubble configuration by the $\pi^{-}/\pi^{+}$ ratio in
  heavy-ion collisions

abstract:
  It is theoretically and experimentally argued that there may exist bubble or
toroid-shaped configurations in some nucleus systems. Based on the nuclear
transport model, it is shown that compared with the collision of normal nuclei,
there is a depletion of central density of compression with bubble
configurations in projectile and target nuclei. This depletion of central
compression density may affect some observables in heavy-ion collisions.


title: On the Polar Code Encoding in Fading Channels

abstract:
  Besides the determined construction of polar codes in BEC channels, different
construction techniques have been proposed for AWGN channels. The current
state-of-the-art algorithm starts with a design-SNR (or an operating SNR) and
then processing is carried out to approximate each individual bit channel.
However, as found in this paper, for fading channels, an operating SNR can not
be directly used in approximating the bit channels. To achieve a better BER
performance, the input SNR for the polar code construction in fadding channels
is derived. A selection of the design-SNR for both the AWGN and the fading
channels from an information theoretical point of view is studied. Also
presented in this paper is the study of sacrificing a small data rate to gain
orders of magnitude increase in the BER performance.


title: Local Partial Clique Covers for Index Coding

abstract:
  Index coding, or broadcasting with side information, is a network coding
problem of most fundamental importance. In this problem, given a directed
graph, each vertex represents a user with a need of information, and the
neighborhood of each vertex represents the side information availability to
that user. The aim is to find an encoding to minimum number of bits (optimal
rate) that, when broadcasted, will be sufficient to the need of every user. Not
only the optimal rate is intractable, but it is also very hard to characterize
with some other well-studied graph parameter or with a simpler formulation,
such as a linear program. Recently there have been a series of works that
address this question and provide explicit schemes for index coding as the
optimal value of a linear program with rate given by well-studied properties
such as local chromatic number or partial clique-covering number. There has
been a recent attempt to combine these existing notions of local chromatic
number and partial clique covering into a unified notion denoted as the local
partial clique cover (Arbabjolfaei and Kim, 2014).
  We present a generalized novel upper-bound (encoding scheme) - in the form of
the minimum value of a linear program - for optimal index coding. Our bound
also combines the notions of local chromatic number and partial clique covering
into a new definition of the local partial clique cover, which outperforms both
the previous bounds, as well as beats the previous attempt to combination.
  Further, we look at the upper bound derived recently by Thapa et al., 2015,
and extend their $n$-$\mathsf{GIC}$ (Generalized Interlinked Cycle)
construction to $(k,n)$-$\mathsf{GIC}$ graphs, which are a generalization of
$k$-partial cliques.


title:
Kolmogorov's Equations for Jump Markov Processes with Unbounded Jump
  Rates

abstract:
  As well-known, transition probabilities of jump Markov processes satisfy
Kolmogorov's backward and forward equations. In the seminal 1940 paper, William
Feller investigated solutions of Kolmogorov's equations for jump Markov
processes. Recently the authors solved the problem studied by Feller and showed
that the minimal solution of Kolmogorov's backward and forward equations is the
transition probability of the corresponding jump Markov process if the
transition rate at each state is bounded. This paper presents more general
results. For Kolmogorov's backward equation, the sufficient condition for the
described property of the minimal solution is that the transition rate at each
state is locally integrable, and for Kolmogorov's forward equation the
corresponding sufficient condition is that the transition rate at each state is
locally bounded.


title: A New Result on Packing Unit Squares into a Large Square

abstract:
  In their 2009 note: \emph{Packing equal squares into a large square}, Chung
and Graham proved that the uncovered area of a large square of side length $x$
is $O\left(x^{(3+\sqrt{2})/7}\log x\right)$ after maximum number of
non-overlapping unit squares are packed into it, which improved the earlier
results of Erd\H{o}s-Graham, Roth-Vaughan, and Karabash-Soifer. Here we further
improve the result to $O(x^{5/8})$ that also helps to improve the bound for the
dual problem: finding the minimum number of unit squares needed for covering
the large square, from $x^2+O\left(x^{(3+\sqrt{2})/7}\log x\right)$ to
$x^2+O(x^{5/8})$.


title:
Emergence of massless Dirac quasiparticles in correlated hydrogenated
  graphene with broken sublattice symmetry

abstract:
  Using the variational cluster approximation (VCA) and the cluster
perturbation theory, we study the finite temperature phase diagram of a
half-depleted periodic Anderson model on the honeycomb lattice at half filling
for a model of graphone, i.e., single-side hydrogenated graphene. The ground
state of this model is found to be ferromagnetic (FM) semi-metal. The spin wave
dispersion in the FM state is linear in momentum at zero temperature but
becomes quadratic at finite temperatures, implying that the FM state is fragile
against thermal fluctuations. Indeed, our VCA calculations find that the
paramagnetic (PM) state dominates the finite temperature phase diagram. More
surprisingly, we find that massless Dirac quasiparticles with the linear energy
dispersion emerge at the Fermi energy upon introducing the electron correlation
$U$ at the impurity sites in the PM phase. The Dirac Fermi velocity is found to
be highly correlated to the quasiparticle weight of the emergent massless Dirac
quasiparticles at the Fermi energy and monotonically increases with $U$. These
unexpected massless Dirac quasiparticles are also examined with the Hubbard-I
approximation and the origin is discussed in terms of the spectral weight
redistribution involving a large energy scale of $U$. Considering an effective
quasiparticle Hamiltonian which reproduces the single-particle excitations
obtained by the Hubbard-I approximation, we argue that the massless Dirac
quasiparticles are protected by the electron correlation. Our finding is
therefore the first example of the emergence of massless Dirac quasiparticles
due to dynamical electron correlations without breaking any spatial symmetry.
The experimental implications of our results for graphone as well as a graphene
sheet on transition metal substrates are also briefly discussed.


title:
Experimentally Feasible Quantum-Key-Distribution Scheme Using Qubit-Like
  Qudits And Its Comparison With Existing Qubit- and Qudit-Based Protocols

abstract:
  Recently, Chau introduced an experimentally feasible qudit-based
quantum-key-distribution (QKD) scheme. In that scheme, one bit of information
is phase encoded in the prepared state in a $2^n$-dimensional Hilbert space in
the form $(|i\rangle\pm|j\rangle)/\sqrt{2}$ with $n\ge 2$. For each qudit
prepared and measured in the same two-dimensional Hilbert subspace, one bit of
raw secret key is obtained in the absence of transmission error. Here we show
that by modifying the basis announcement procedure, the same experimental setup
can generate $n$ bits of raw key for each qudit prepared and measured in the
same basis in the noiseless situation. The reason is that in addition to the
phase information, each qudit also carries information on the Hilbert subspace
used. The additional $(n-1)$ bits of raw key comes from a clever utilization of
this extra piece of information. We prove the unconditional security of this
modified protocol and compare its performance with other existing provably
secure qubit- and qudit-based protocols on market in the one-way classical
communication setting. Interestingly, we find that for the case of $n=2$, the
secret key rate of this modified protocol using non-degenerate random quantum
code to perform one-way entanglement distillation is equal to that of the
six-state scheme.


title: Interactive Browsing and Navigation in Relational Databases

abstract:
  Although researchers have devoted considerable attention to helping database
users formulate queries, many users still find it challenging to specify
queries that involve joining tables. To help users construct join queries for
exploring relational databases, we propose ETable, a novel presentation data
model that provides users with a presentation-level interactive view. This view
compactly presents one-to-many and many-to-many relationships within a single
enriched table by allowing a cell to contain a set of entity references. Users
can directly interact with this enriched table to incrementally construct
complex queries and navigate databases on a conceptual entity-relationship
level. In a user study, participants performed a range of database querying
tasks faster with ETable than with a commercial graphical query builder.
Subjective feedback about ETable was also positive. All participants found that
ETable was easier to learn and helpful for exploring databases.


title:
Quasi-isometry classification of right-angled Artin groups II: several
  infinite out cases

abstract:
  We are motivated by the question that for which class of right-angled Artin
groups (RAAG's), the quasi-isometry classification coincides with
commensurability classification. This is previously known for RAAG's with
finite outer automorphism groups. In this paper, we identify two classes of
RAAG's, where their outer automorphism groups are allowed to contain adjacent
transvections and partial conjugations, hence infinite. If $G$ belongs to one
of these classes, then any other RAAG $G'$ is quasi-isometric to $G$ if and
only if $G'$ is commensurable to $G$. We also show that in this case, there
exists an algorithm to determine whether two RAAG's are quasi-isometric by
looking at their defining graphs. Compared to the finite out case, as well as
the previous quasi-isometry rigidity results for symmetric spaces, thick
Euclidean buildings and mapping class groups, the main issue we need to deal
with here is the reconstruction map may not have nice properties as before, or
may not even exist. We introduce a deformation argument, as well as techniques
from cubulation to deal with this issue.


title: On point processes in multitarget tracking

abstract:
  The finite-set statistics (FISST) approach to multitarget tracking was
introduced in the mid-1990s. Its current extended form dates from 2001. In
2008, an "elementary" alternative to FISST was proposed, based on "finite point
processes" rather than RFS's. This was accompanied by single-sensor and
multisensor versions of a claimed generalization of the PHD filter, the
"iFilter." Then in 2013 in the Journal of Advances in Information Fusion (JAIF)
and elsewhere, the same author went on to claim that the FISST
p.g.fl./functional derivative approach is actually "due to" (a "corollary" of)
a 50-year-old pure-mathematics paper by Moyal; and described a "point process"
p.g.fl./functional derivative approach to multitarget tracking supposedly based
on it. In this paper it is shown that: (1)non-RFS point processes are a
phenomenologically erroneous foundation for multitarget tracking; (2) nearly
every equation, concept, discussion, derivation, and methodology in the JAIF
paper originally appeared in FISST publications, without being so attributed;
(3) FISST cannot possibly be "due to Moyal"; (4) the "point process" approach
described in JAIF differs from FISST only in regard to terminology and
notation, and thus in this sense appears to be an obscured, phenomenologically
erroneous, and improperly attributed copy of FISST. It is also shown that the
derivations of the single-sensor and multisensory iFilter appear to have had
major errors, as did a subsequent recasting of the multisensor iFilter as a
"traffic mapping filter."


title:
"Unusual Rainbow and White Rainbow" A new auroral candidate in oriental
  historical sources

abstract:
  Solar activity has been recorded as auroras or sunspots in various historical
sources. These records are of much importance for investigating both long-term
solar activities and extremely intense solar flares. In previous studies, they
were recorded as "vapor," "cloud," or "light," especially in oriental
historical sources; however, the terminology was not discussed adequately and
is still quite vague. In this paper, we suggest the possibility of "unusual
rainbow" and "white rainbow" as candidates of historical auroras in oriental
historical sources and examine if it is probable. This discovery will help us
to make more comprehensive historical auroral catalogues and require us to add
these terms to auroral candidates in oriental historical sources.


title: Physical Resources for Quantum-enhanced Phase Estimation

abstract:
  We study the role of quantum entanglement (particle entanglement and mode
entanglement) in optical phase estimation by employing the first and second
quantization formalisms of quantum mechanics. The quantum Fisher information
(QFI) is expressed as a function of the first and second order optical
coherence functions. The resulting form of the QFI elucidates the deriving
metrological resources for quantum phase estimation: field intensity and photon
detection correlations. In addition, our analysis confirms that mode
entanglement is not required for quantum-enhanced interferometry, whereas
particle entanglement is a necessary requirement.


title: Coupled channel analysis of molecule picture of $P_{c}(4380)$

abstract:
  We construct a potential obtained by one-pion exchange for the coupled
channel $\Sigma_c^\ast$$\bar{D}$-$\Sigma_c$$\bar{D}^\ast$, and solve the
coupled Schr\"{o}dinger equations to determine the binding energy. We find that
there exists one or two bound states with the binding energy of several MeV
below the threshold of $\Sigma_c^\ast$ and $\bar{D}$, dominantly made from a
$\Sigma_c^\ast$ baryon and a $\bar{D}$ meson, with the size of about $1.5$fm
for wide parameter region. We also study the pentaquark states including a $b$
quark and/or an anti-$b$ quark. We show that there exist pentaquarks including
$c\bar{b}$, $b\bar{c}$ and $b\bar{b}$, all of which lie at about $10$MeV below
the corresponding threshold and have size of about $1.5$fm.


title:
The Mysteries of Security Games: Equilibrium Computation Becomes
  Combinatorial Algorithm Design

abstract:
  The security game is a basic model for resource allocation in adversarial
environments. Here there are two players, a defender and an attacker. The
defender wants to allocate her limited resources to defend critical targets and
the attacker seeks his most favorable target to attack. In the past decade,
there has been a surge of research interest in analyzing and solving security
games that are motivated by applications from various domains. This paper
examines security games from a theoretical perspective and provides a unified
view of various security game models. In particular, each security game can be
characterized by a set system $E$ which consists of the defender's pure
strategies, The defender's best response problem can be viewed as a
combinatorial optimization problem over $E$. Our framework captures most of the
basic security game models in the literature, including all the deployed
systems, The set system $E$ arising from various domains encodes standard
combinatorial problems like bipartite matching, maximum coverage, min-cost
flow, packing problems, etc. Our main result shows that equilibrium computation
in security games is essentially a combinatorial problem. In particular, we
prove that, for any set system $E$, the following problems can be reduced to
each other in polynomial time: (0) combinatorial optimization over $E$, (1)
computing the minimax equilibrium for zero-sum security games over $E$, (2)
computing the strong Stackelberg equilibrium for security games over $E$, (3)
computing the best or worst (for the defender) Nash equilibrium for security
games over $E$. Here, by "games over $E$" we mean the class of security games
with arbitrary payoff structures, but a fixed set $E$ of defender pure
strategies. This shows that the complexity of a security game is essentially
determined by the set system $E$.


title:
Disaggregated Benders Decomposition for solving a Network Maintenance
  Scheduling Problem

abstract:
  We consider a problem concerning a network and a set of maintenance requests
to be undertaken. We wish to schedule the maintenance in such a way as to
minimise the impact on the total throughput of the network. We apply
disaggregated Benders cuts and lazy constraints to solve the problem to
optimality, as well as exploring the strengths and weaknesses of the technique.
We prove that our Benders cuts are pareto optimal. Solutions to the LP
relaxation also provide further valid inequalities to reduce total solve time.
We implement these techniques on simulated data presented in previous papers,
and compare our solution technique to previous methods and a direct MIP
formulation. We prove optimality in many problem instances that have not
previously been proven.


title: An Easton like theorem in the presence of Shelah Cardinals

abstract:
  We show that Shelah cardinals are preserved under the canonical $GCH$ forcing
notion. We also show that if $GCH$ holds and $F:REG\rightarrow CARD$ is an
Easton function which satisfies some weak properties, then there exists a
cofinality preserving generic extension of the universe which preserves Shelah
cardinals and satisfies $\forall \kappa\in REG,~ 2^{\kappa}=F(\kappa)$. This
gives a partial answer to a question asked by Cody [1] and independently by
Honzik [5]. We also prove an indestructibility result for Shelah cardinals.


title:
Combinatorial decompositions, Kirillov-Reshetikhin invariants and the
  Volume Conjecture for hyperbolic polyhedra

abstract:
  We suggest a method of computing volume for a simple polytope $P$ in
three-dimensional hyperbolic space $\mathbb{H}^3$. This method combines the
combinatorial reduction of $P$ as a trivalent graph $\Gamma$ (the $1$-skeleton
of $P$) by $I-H$, or Whitehead, moves (together with shrinking of triangular
faces) aligned with its geometric splitting into generalised tetrahedra. With
each decomposition (under some conditions) we associate a potential function
$\Phi$ such that the volume of $P$ can be expressed through a critical values
of $\Phi$. The results of our numeric experiments with this method suggest that
one may associated the above mentioned sequence of combinatorial moves with the
sequence of moves required for computing the Kirillov-Reshetikhin invariants of
the trivalent graph $\Gamma$. Then the corresponding geometric decomposition of
$P$ might be used in order to establish a link between the volume of $P$ and
the asymptotic behaviour of the Kirillov-Reshetikhin invariants of $\Gamma$,
which is colloquially know as the Volume Conjecture.


title:
The Effect of Communication Topology on Scalar Field Estimation by
  Networked Robotic Swarms

abstract:
  This paper studies the problem of reconstructing a two-dimensional scalar
field using a swarm of networked robots with local communication capabilities.
We consider the communication network of the robots to form either a chain or a
grid topology. We formulate the reconstruction problem as an optimization
problem that is constrained by first-order linear dynamics on a large,
interconnected system. To solve this problem, we employ an optimization-based
scheme that uses a gradient-based method with an analytical computation of the
gradient. In addition, we derive bounds on the trace of observability Gramian
of the system, which helps us to quantify and compare the estimation capability
of chain and grid networks. A comparison based on a performance measure related
to the H2 norm of the system is also used to study robustness of the network
topologies. Our resultsare validated using both simulated scalar fields and
actual ocean salinity data.


title: A Castelnuovo-Mumford regularity bound for scrolls

abstract:
  Let $X \subseteq \mathbb{P}^r$ be a scroll of codimension $e$ and degree $d$
over a smooth projective curve of genus $g$. The purpose of this paper is to
prove a linear Castelnuovo-Mumford regularity bound that reg$(X) \leq
d-e+1+g(e-1)$. This bound works over an algebraically closed field of arbitrary
characteristic.


title:
The spatial distribution of neutral hydrogen as traced by low HI mass
  galaxies

abstract:
  The formation and evolution of galaxies with low neutral atomic hydrogen (HI)
masses, M$_{\rm HI}$$<$10$^{8}h^{-2}$M$_{\odot}$, are affected by host dark
matter halo mass and photoionisation feedback from the UV background after the
end of reionization. We study how the physical processes governing the
formation of galaxies with low HI mass are imprinted on the distribution of
neutral hydrogen in the Universe using the hierarchical galaxy formation model,
GALFORM. We calculate the effect on the correlation function of changing the HI
mass detection threshold at redshifts $0 \le z \le 0.5$. We parameterize the
clustering as $\xi(r)=(r/r_{0})^{-\gamma}$ and we find that including galaxies
with M$_{\rm HI}$$<$10$^{8}h^{-2}$M$_{\odot}$ increases the clustering
amplitude $r_{0}$ and slope $\gamma$ compared to samples of higher HI masses.
This is due to these galaxies with low HI masses typically being hosted by
haloes with masses greater than 10$^{12}{h}^{-1}$M$_{\odot}$, and is in
contrast to optically selected surveys for which the inclusion of faint, blue
galaxies lowers the clustering amplitude. We show the HI mass function for
different host dark matter halo masses and galaxy types (central or satellite)
to interpret the values of $r_{0}$ and $\gamma$ of the clustering of
HI-selected galaxies. We also predict the contribution of low HI mass galaxies
to the 21cm intensity mapping signal. We calculate that a dark matter halo mass
resolution better than $\sim$10$^{10}{h}^{-1}$M$_{\odot}$ at redshifts higher
than 0.5 is required in order to predict converged 21cm brightness temperature
fluctuations.


title:
Column Generation and Lazy Constraints for solving the Liner Ship Fleet
  Repositioning Problem with cargo flows

abstract:
  We consider an important problem in the shipping industry known as the liner
shipping fleet repositioning problem (LSFRP). We examine a public data set for
this problem including many instances which have not previously been solved to
optimality. We present several improvements on a previous mathematical
formulation, however the largest instances still result in models too difficult
to solve in reasonable time. The implementation of column generation reduces
the model size significantly, allowing all instances to be solved, with some
taking two to three hours. A novel application of lazy constraints further
reduces the size of the model, and results in all instances being solved to
optimality in under four minutes.


title: Explicit Geodesics in Gromov-Hausdorff Space

abstract:
  We provide an alternative, constructive proof that the collection
$\mathcal{M}$ of isometry classes of compact metric spaces endowed with the
Gromov-Hausdorff distance is a geodesic space. The core of our proof is a
construction of explicit geodesics on $\mathcal{M}$. We also provide several
interesting examples of geodesics on $\mathcal{M}$, including a geodesic
between $\mathbb{S}^0$ and $\mathbb{S}^n$ for any $n\geq 1$.


title: Cofree Objects in The Centralizer and The Center Categories

abstract:
  We study cocompleteness, co-wellpoweredness and generators in the centralizer
category of an object or morphism in a monoidal category, and the center or the
weak center of a monoidal category. We explicitly give some answers for when
colimits, cocompleteness, co-wellpoweredness and generators in these monoidal
categories can be inherited from their base monidal categories. Most
importantly, we investigate cofree objects of comonoids in these monoidal
categories.


title: Hermitian symmetric space, flat bundle and holomorphicity criterion

abstract:
  Let $K\backslash G$ be an irreducible Hermitian symmetric space of noncompact
type and $\Gamma \,\subset\, G$ a closed torsionfree discrete subgroup. Let $X$
be a compact K\"ahler manifold and $\rho\, :\, \pi_1(X, x_0)\,\longrightarrow\,
\Gamma$ a homomorphism such that the adjoint action of $\rho(\pi_1(X, x_0))$ on
$\text{Lie}(G)$ is completely reducible. A theorem of Corlette associates to
$\rho$ a harmonic map $X\, \longrightarrow\, K\backslash G/\Gamma$. We give a
criterion for this harmonic map to be holomorphic. We also give a criterion for
it to be anti--holomorphic.


title:
Efficient Optimal Joint Channel Estimation and Data Detection for
  Massive MIMO Systems

abstract:
  In this paper, we propose an efficient optimal joint channel estimation and
data detection algorithm for massive MIMO wireless systems. Our algorithm is
optimal in terms of the generalized likelihood ratio test (GLRT). For massive
MIMO systems, we show that the expected complexity of our algorithm grows
polynomially in the channel coherence time. Simulation results demonstrate
significant performance gains of our algorithm compared with suboptimal
non-coherent detection algorithms. To the best of our knowledge, this is the
first algorithm which efficiently achieves GLRT-optimal non-coherent detections
for massive MIMO systems with general constellations.


title: Cosmic distances probed using the BAO ring

abstract:
  The cosmic distance can be precisely determined using a `standard ruler'
imprinted by primordial baryon acoustic oscillation (hereafter BAO) in the
early Universe. The BAO at the targeted epoch is observed by analysing galaxy
clustering in redshift space (hereafter RSD) for which a theoretical
formulation is not yet fully understood, and thus makes this methodology
unsatisfactory. The BAO analysis following a full RSD modelling is contaminated
by systematic uncertainties due to a non-linear smearing effects such as
non-linear corrections and by random viral velocity of galaxies. However, the
BAO can be probed independently of RSD contamination using the BAO peak
positions located in the 2D anisotropic correlation function. A new methodology
is presented to measure peak positions, to test whether it is also contaminated
by the same systematics in RSD, and to provide the radial and transverse cosmic
distances determined by the 2D BAO peak positions. We find that in our model
independent anisotropic clustering analysis we can obtain about $2\%$ and $5\%$
constraints on $D_A$ and $H^{-1}$ respectively with current BOSS data, which is
competitive with other analysis.


title: Shear induced solidification of athermal systems with weak attraction

abstract:
  We find that unjammed packings of frictionless particles with rather weak
attraction can always be driven into solid-like states by shear. The structure
of shear-driven solids evolves continuously with packing fraction from gel-like
to jamming-like, but is almost independent of the shear stress. In contrast,
both the density of vibrational states (DOVS) and force network evolve
progressively with the shear stress. There exists a packing fraction
independent shear stress $\sigma_c$, at which the shear-driven solids are
isostatic and have a flattened DOVS. Solid-like states induced by a shear
stress greater than $\sigma_c$ possess properties of marginally jammed solids
and are thus strictly-defined shear jammed states. Below $\sigma_c$, states at
all packing fractions are under isostaticity and share common features in the
DOVS and force network, although their structures can be rather different. Our
study reveals the significance of the shear stress in determining properties of
shear-driven solids and leads to an enriched jamming phase diagram for weakly
attractive particles.


title: Remarks on the distribution of the primitive roots of a prime

abstract:
  Let $\mathbb{F}_p$ be a finite field of size $p$ where $p$ is an odd prime.
Let $f(x)\in\mathbb{F}_p[x]$ be a polynomial of positive degree $k$ that is not
a $d$-th power in $\mathbb{F}_p[x]$ for all $d\mid p-1$. Furthermore, we
require that $f(x)$ and $x$ are coprime. The main purpose of this paper is to
give an estimate of the number of pairs $(\xi,\xi^\alpha f(\xi))$ such that
both $\xi$ and $\xi^\alpha f(\xi)$ are primitive roots of $p$ where $\alpha$ is
a given integer. This answers a question of Han and Zhang.


title:
How important is tropospheric humidity for coastal rainfall in the
  tropics?

abstract:
  Recent research has community have shown that tropical convection and
rainfall is sensitive to mid-tropospheric humidity. Therefore it has been
suggested to improve the representation of moist convection by making cumulus
parameterizations more sensitive to mid-tropospheric moisture. Climate models
show considerable rainfall biases in coastal tropical areas, where approx. 33 %
of the overall rainfall received is associated with coastal land-sea
interaction. Building on an algorithm to objectively identify rainfall that is
associated with land-sea interaction we investigate whether the relationship
between rainfall in coastal regions and atmospheric humidity differs from that
over the open ocean or over inland areas. We combine 3-hourly satellite
estimates of rainfall with humidity estimates from reanalyses and investigate
if coastal rainfall reveals the well known relationship between area-averaged
precipitation and column integrated moisture. We find that rainfall that is
associated with coastal land-sea effects occurs under much drier
mid-tropospheric conditions than that over the ocean and doesn't exhibit a
pronounced critical value of humidity. In addition, the dependence of the
amount of rainfall on mid-tropospheric moisture is significantly weaker when
the rainfall is coastally influenced. Our findings indicate that the
representation of convection in weather and climate models must cater for the
special character near coasts rather than rely on a common set of rules across
the globe.


title: Microprocessor Optimizations for the Internet of Things: A Survey

abstract:
  The Internet of Things (IoT) refers to a pervasive presence of interconnected
and uniquely identifiable physical devices. These devices' goal is to gather
data and drive actions in order to improve productivity, and ultimately reduce
or eliminate reliance on human intervention for data acquisition,
interpretation, and use. The proliferation of these connected low-power devices
will result in a data explosion that will significantly increase data
transmission costs with respect to energy consumption and latency. Edge
computing reduces these costs by performing computations at the edge nodes,
prior to data transmission, to interpret and/or utilize the data. While much
research has focused on the IoT's connected nature and communication
challenges, the challenges of IoT embedded computing with respect to device
microprocessors has received much less attention. This paper explores IoT
applications' execution characteristics from a microarchitectural perspective
and the microarchitectural characteristics that will enable efficient and
effective edge computing. To tractably represent a wide variety of
next-generation IoT applications, we present a broad IoT application
classification methodology based on application functions, to enable quicker
workload characterizations for IoT microprocessors. We then survey and discuss
potential microarchitectural optimizations and computing paradigms that will
enable the design of right-provisioned microprocessors that are efficient,
configurable, extensible, and scalable. This paper provides a foundation for
the analysis and design of a diverse set of microprocessor architectures for
next-generation IoT devices.


title:
Quantum many-body simulation using monolayer exciton-polaritons in
  coupled-cavities

abstract:
  Quantum simulation is a promising approach to understand complex strongly
correlated many-body systems using relatively simple and tractable systems.
Photon-based quantum simulators have great advantages due to the possibility of
direct measurements of multi-particle correlations and ease of simulating
non-equilibrium physics. However, interparticle interaction in existing
photonic systems is often too weak limiting the potential of quantum
simulation. Here we propose an approach to enhance the interparticle
interaction using exciton-polaritons in MoS$_2$ monolayer quantum-dots embedded
in 2D photonic crystal microcavities. Realistic calculation yields optimal
repulsive interaction in the range of $1$-$10$~meV --- more than an order of
magnitude greater than the state-of-art value. Such strong repulsive
interaction is found to emerge neither in the photon-blockade regime for small
quantum dot nor in the polariton-blockade regime for large quantum dot, but in
the crossover between the two regimes with a moderate quantum-dot radius around
20~nm. The optimal repulsive interaction is found to be largest in MoS$_2$
among commonly used optoelectronic materials. Quantum simulation of strongly
correlated many-body systems in a finite chain of coupled cavities and its
experimental signature are studied via exact diagonalization of the many-body
Hamiltonian. A method to simulate 1D superlattices for interacting
exciton-polariton gases in serially coupled cavities is also proposed.
Realistic considerations on experimental realizations reveal advantages of
transition metal dichalcogenide monolayer quantum-dots over conventional
semiconductor quantum-emitters.


title:
Damping of the Higgs and Nambu-Goldstone modes of superfluid Bose gases
  at finite temperatures

abstract:
  We study collective modes of superfluid Bose gases in optical lattices at
commensurate fillings. We focus on the vicinity of the quantum phase transition
to the Mott insulator, where there exists the Higgs amplitude mode in addition
to the Nambu-Goldstone phase mode associated with the spontaneous U(1) symmetry
breaking. We analyze finite-temperature effects on the damping of the
collective modes by using an effective spin-1 model and the field theoretical
methods based on the finite-temperature Green's function. We calculate the
damping rates up to 1-loop order and evaluate them analytically and
numerically. We show that the damping rate of the Higgs mode increases with
increasing the temperature but it remains underdamped up to a typical
temperature achieved in experiments. Moreover, we find that the Nambu-Goldstone
mode attenuates via a Landau damping process resulting from interactions with
the Higgs mode and it can be overdamped at the typical temperature in a certain
parameter region.


title: The Design Principles of Konrad Zuse's Mechanical Computers

abstract:
  Konrad Zuse built the Z1, a mechanical programmable computing machine,
between 1935/36 and 1937/38. The Z1 was a binary floating-point computing
device. The individual logical gates were constructed using metallic plates and
interconnection rods. This paper describes the design principles Zuse followed
in order to complete a complex calculating machine, as the Z1 was. Zuse called
his basic switching elements "mechanical relays" in analogy to the electrical
relays used in telephony.


title:
SDSS J163459.82+204936.0: A Ringed Infrared-Luminous Quasar with
  Outflows in both Absorption and Emission Lines

abstract:
  SDSS J1634+2049 is a local (z = 0.1293) infrared-luminous quasar with LIR=
10^11.91 Lsun. We present a detailed multiwavelength study of both the host
galaxy and the nucleus. The host galaxy demonstrates violent, obscured star
formation activities with SFR ~ 140 Msun yr^-1, estimated from either the PAH
emission or IR luminosity. The optical to NIR spectra exhibit a blueshifted
narrow cuspy component in Hb, HeI5876,10830 and other emission lines
consistently with an offset velocity of ~900 km/s, as well as additional
blueshifting phenomena in high-ionization lines , while there exist blueshifted
broad absorption lines (BALs) in NaID and HeI*3889,10830, indicative of the AGN
outflows producing BALs and emission lines. Constrained mutually by the several
BALs with CLOUDY, the physical properties of the absorption-line outflow are
derived as follows: 10^4 < n_H <= 10^5 cm^-3, 10^-1.3 <= U <= 10^-0.7 and
10^22.5<= N_H <= 10^22.9 cm^-2 , similar to those derived for the emission-line
outflows. The similarity suggests a common origin. Taking advantages of both
the absorption lines and outflowing emission lines, we find that the outflow
gas is located at a distance of 48 - 65 pc from the nucleus, and that the
kinetic luminosity of the outflow is 10^44-10^46 erg s^-1. J1634+2049 has a
off-centered galactic ring on the scale of ~ 30 kpc that is proved to be formed
by a recent head-on collision by a nearby galaxy. Thus this quasar is a
valuable object in the transitional phase emerging out of dust enshrouding as
depicted by the co-evolution scenario.


title: The phase transition of higher dimensional Charged black holes

abstract:
  In this paper,we have studied phase transitions of higher dimensional charge
black hole with spherical symmetry. we calculated the local energy and local
temperature, and find that these state parameters satisfy the first law of
thermodynamics. We analyze the critical behavior of black hole thermodynamic
system by taking state parameters $(Q,\Phi)$ of black hole thermodynamic
system, in accordance with considering to the state parameters $(P,V)$ of Van
der Waals system respectively. we obtain the critical point of black hole
thermodynamic system, and find the critical point is independent of the dual
independent variables we selected. This result for asymptotically flat space is
consistent with that for AdS spacetime, and is intrinsic property of black hole
thermodynamic system.


title: The spectrum of geodesic balls on spherically symmetric manifolds

abstract:
  We study the Dirichlet spectrum of the Laplace operator on geodesic balls
centred at a pole of spherically symmetric manifolds. We first derive a
Hadamard--type formula for the dependence of the first eigenvalue $\lambda_{1}$
on the radius $r$ of the ball, which allows us to obtain lower and upper bounds
for $\lambda_{1}$ in specific cases. For the sphere and hyperbolic space, these
bounds are asymptotically sharp as $r$ approaches zero and we see that while in
two dimensions $\lambda_{1}$ is bounded from above by the first two terms in
the asymptotics for small $r$, for dimensions four and higher the reverse
inequality holds.
  In the general case we derive the asymptotic expansion of $\lambda_{1}$ for
small radius and determine the first three terms explicitly. For compact
manifolds we carry out similar calculations as the radius of the geodesic ball
approaches the diameter of the manifold. In the latter case we show that in
even dimensions there will always exist logarithmic terms in these expansions.


title:
Zero-sum Risk-sensitive Stochastic Games for Continuous Time Markov
  Chains

abstract:
  We study infinite horizon discounted-cost and ergodic-cost risk-sensitive
zero-sum stochastic games for controlled continuous time Markov chains on a
countable state space. For the discounted-cost game we prove the existence of
value and saddle-point equilibrium in the class of Markov strategies under
nominal conditions. For the ergodic-cost game we prove the existence of values
and saddle point equilibrium by studying the corresponding
Hamilton-Jacobi-Isaacs equation under a certain Lyapunov condition.


title: On the expectation of operator norms of random matrices

abstract:
  We prove estimates for the expected value of operator norms of Gaussian
random matrices with independent and mean-zero entries, acting as operators
from $\ell^m_{p^*}$ to $\ell_q^n$, $1\leq p^* \leq 2 \leq q \leq \infty$.


title:
Inverse scattering for the magnetic Schr\"odinger operator on surfaces
  with Euclidean ends

abstract:
  We prove a fixed frequency inverse scattering result for the magnetic
Schr\"odinger operator (or connection Laplacian) on surfaces with Euclidean
ends. We show that, under suitable decaying conditions, the scattering matrix
for the operator determines both the gauge class of the connection and the
zeroth order potential.


title: Gravitational Baryogenesis after Anisotropic Inflation

abstract:
  The gravitational baryogensis may not generate a sufficient baryon asymmetry
in the standard thermal history of the Universe when we take into account the
gravitino problem. Hence it has been suggested that anisotropy of the Universe
can enhance the generation of the baryon asymmetry through the increase of the
time change of the Ricci scalar curvature. We study the gravitational
baryogenesis in the presence of anisotropy, which is produced at the end of an
anisotropic inflation. Although we confirm that the generated baryon asymmetry
is enhanced compared with the original isotropic cosmological model, taking
into account the constraint on the anisotropy by the recent CMB observations,
we find that it is still difficult to obtain the observed baryon asymmetry only
through the gravitational baryogenesis without suffering from the gravitino
problem.


title: UV and X-Ray Variability of the Narrow-Line Seyfert 1 Galaxy Ark 564

abstract:
  We analyse eight XMM-Newton observations of the bright Narrow-Line Seyfert 1
galaxy Arakelian 564 (Ark 564). These observations, separated by ~6 days, allow
us to look for correlations between the simultaneous UV emission (from the
Optical Monitor) with not only the X-ray flux but also with the different X-ray
spectral parameters. The X-ray spectra from all the observations are found to
be adequately fitted by a double Comptonization model where the soft excess and
the hard X-ray power law are represented by thermal Comptonization in a low
temperature plasma and hot corona, respectively. Apart from the fluxes of each
component, the hard X-ray power law index is found to be variable. These
results suggest that the variability is associated with changes in the geometry
of the inner region. The UV emission is found to be variable and well
correlated with the high energy index while the correlations with the fluxes of
each component are found to be weaker. Using viscous time-scale arguments we
rule out the possibility that the UV variation is due to fluctuating accretion
rate in the outer disc. If the UV variation is driven by X-ray reprocessing,
then our results indicate that the strength of the X-ray reprocessing depends
more on the geometry of the X-ray producing inner region rather than on the
X-ray luminosity alone.


title:
Space reconstruction of the morphology and kinematics of axisymmetric
  radio sources

abstract:
  The unprecedented quality of the observations available from the Atacama
Large Millimetre/sub-millimetre Array (ALMA) calls for analysis methods making
the best of them. Reconstructing in space the morphology and kinematics of
radio sources is an underdetermined problem that requires imposing additional
constraints for its solution. The hypothesis of rotational invariance about a
well-defined star axis, which is a good approximation to the description of the
gas envelopes of many evolved stars and protostars, is particularly efficient
in this role. In the first part of the article, a systematic use of simulated
observations allows for identifying the main problems and for constructing
quantities aimed at solving them. In particular the evaluation of the
orientation of the star axis in space and the differentiation between expansion
along the star axis and rotation about it are given special attention. The use
of polar rather than Cartesian sky coordinates is shown to better match the
morphology and kinematics of actual stars. The radial dependence of the gas
density and temperature and the possible presence of velocity gradients are
briefly considered. In the second part, the results obtained in the first part
are applied to a few stars taken as examples with the aim of evaluating their
usefulness when applied to concrete cases. A third part takes stock of what
precedes and formulates some guidelines for modelling the radio emission of
axisymmetric radio sources, limited however to the mathematics and geometry of
the problem, physics considerations being ignored.


title: Weakly Coupled Oscillators in a Slowly Varying World

abstract:
  We extend the theory of weakly coupled oscillators to incorporate slowly
varying inputs and parameters. We employ a combination of regular perturbation
and an adiabatic approximation to derive equations for the phase-difference
between a pair of oscillators. We apply this to the simple Hopf oscillator and
then to a biophysical model. The latter represents the behavior of a neuron
that is subject to slow modulation of a muscarinic current such as would occur
during transient attention through cholinergic activation. Our method extends
and simplifies the recent work of Kurebayashi (Physical Review Letters, 111,
214101, 2013) to include coupling. We apply the method to an all-to-all network
and show that there is a waxing and waning of synchrony of modulated neurons.


title:
Quantum theory as plausible reasoning applied to data obtained by robust
  experiments

abstract:
  We review recent work that employs the framework of logical inference to
establish a bridge between data gathered through experiments and their
objective description in terms of human-made concepts. It is shown that logical
inference applied to experiments for which the observed events are independent
and for which the frequency distribution of these events is robust with respect
to small changes of the conditions under which experiments are carried out
yields, without introducing any concept of quantum theory, the quantum
theoretical description in terms of the Schr\"odinger or the Pauli equation,
the Stern-Gerlach or Einstein-Podolsky-Rosen-Bohm experiments. The
extraordinary descriptive power of quantum theory then follows from the fact
that it is plausible reasoning, that is common sense, applied to reproducible
and robust experimental data.


title:
Observation of $B^0_s\to\bar{D}^0 K^0_S$ and evidence for
  $B^0_s\to\bar{D}^{*0} K^0_S$ decays

abstract:
  The first observation of the $B^0_s\to\bar{D}^0 K^0_S$ decay mode and
evidence for the $B^0_s\to\bar{D}^{*0} K^0_S$ decay mode are reported. The data
sample corresponds to an integrated luminosity of 3.0 $\text{fb}^{-1}$
collected in $pp$ collisions by LHCb at center-of-mass energies of 7 and 8 TeV.
The branching fractions are measured to be \begin{align*}
\mathcal{B}(B^0_s\to\bar{D}^0 \bar{K}^0) &=
(4.3\pm0.5(\text{stat})\pm0.3(\text{syst})\pm0.3(\text{frag})\pm0.6(\text{norm}))\times10^{-4},\\
\mathcal{B}(B^0_s\to\bar{D}^{*0} \bar{K}^0) &=
(2.8\pm1.0(\text{stat})\pm0.3(\text{syst})\pm0.2(\text{frag})\pm0.4(\text{norm}))\times10^{-4},
\end{align*} where the uncertainties are due to contributions coming from
statistical precision, systematic effects, and the precision of two external
inputs, the ratio $f_s/f_d$ and the branching fraction of $B^0\to\bar{D}^0
K^0_S$, which is used as a calibration channel.


title: Dimensional crossover of nonrelativistic bosons

abstract:
  We investigate how confining a transverse spatial dimension influences the
few- and many-body properties of non-relativistic bosons with pointlike
interactions. Our main focus is on the dimensional crossover from three to two
dimensions, which is of relevance for ultracold atom experiments. Using
Functional Renormalization Group equations and T-matrix calculations we study
how the phase transition temperature changes as a function of the spatial
extent of the transverse dimension and relate the 3D and 2D s-wave scattering
lengths. The analysis reveals how the properties of the lower-dimensional
system are inherited from the higher-dimensional one during the renormalization
group evolution. We limit the discussion to confinements in a potential well
with periodic boundary conditions and argue why this qualitatively captures the
physics of other compactifications such as transverse harmonic confinement as
in cold atom experiments.


title:
Upper limits from five years of blazar observations with the VERITAS
  Cherenkov telescopes

abstract:
  Between the beginning of its full-scale scientific operations in 2007 and
2012, the VERITAS Cherenkov telescope array observed more than 130 blazars; of
these, 26 were detected as very-high-energy (VHE; E>100 GeV) {\gamma}-ray
sources. In this work, we present the analysis results of a sample of 114
undetected objects. The observations constitute a total live-time of ~570
hours. The sample includes several unidentified Fermi-Large Area Telescope
(LAT) sources (located at high Galactic latitude) as well as all the sources
from the second Fermi-LAT catalog which are contained within the field of view
of the VERITAS observations. We have also performed optical spectroscopy
measurements in order to estimate the redshift of some of these blazars that do
not have a spectroscopic distance estimate. We present new optical spectra from
the Kast instrument on the Shane telescope at the Lick observatory for 18
blazars included in this work, which allowed for the successful measurement or
constraint on the redshift of four of them. For each of the blazars included in
our sample we provide the flux upper limit in the VERITAS energy band. We also
study the properties of the significance distributions and we present the
result of a stacked analysis of the data-set, which shows a 4 {\sigma} excess.


title:
Andreev reflection and bound state formation in a ballistic
  two-dimensional electron gas probed by a quantum point contact

abstract:
  We study coherent transport and bound-state formation of Bogoliubov
quasiparticles in a high-mobility In$_{0.75}%$Ga$_{0.25}$As two-dimensional
electron gas (2DEG) coupled to a superconducting Nb electrode by means of a
quantum point contact (QPC) as a tunable single-mode probe. Below the
superconducting critical temperature of Nb, the QPC shows a single-channel
conductance greater than the conductance quantum $2e^{2}/h$ at zero bias, which
indicates the presence of Andreev-reflected quasiparticles, time-reversed
states of the injected electron, returning back through the QPC. The marked
sensitivity of the conductance enhancement to voltage bias and perpendicular
magnetic field suggests a mechanism analogous to reflectionless tunneling--a
hallmark of phase-coherent transport, with the boundary of the 2DEG cavity
playing the role of scatters. When the QPC transmission is reduced to the
tunneling regime, the differential conductance vs bias voltage probes the
single-particle density of states in the proximity area. Measured conductance
spectra show a double peak within the superconducting gap of Nb, demonstrating
the formation of Andreev bound states in the 2DEG. Both of these results,
obtained in the open and closed geometries, underpin the coherent nature of
quasiparticles, i.e., phase-coherent Andreev reflection at the InGaAs/Nb
interface and coherent propagation in the ballistic 2DEG.


title:
Stochastic dual averaging methods using variance reduction techniques
  for regularized empirical risk minimization problems

abstract:
  We consider a composite convex minimization problem associated with
regularized empirical risk minimization, which often arises in machine
learning. We propose two new stochastic gradient methods that are based on
stochastic dual averaging method with variance reduction. Our methods generate
a sparser solution than the existing methods because we do not need to take the
average of the history of the solutions. This is favorable in terms of both
interpretability and generalization. Moreover, our methods have theoretical
support for both a strongly and a non-strongly convex regularizer and achieve
the best known convergence rates among existing nonaccelerated stochastic
gradient methods.


title: Dynamic Clustering in Social Networks using Louvain and Infomap Method

abstract:
  Finding communities or clusters in social networks is a fa- mous topic in
social network analysis. Most algorithms are limited to static snapshots, so
they cannot handle dynamics within the underlying graph. In this paper we
present a modification of the Louvain community detec- tion method to handle
changes in the graph without rerunning the full algorithm. Also, we adapted the
Louvain greedy approach to optimize the Infomap measure. The main idea is, to
recalculate only a small area around the changes. Depending on the graph size
and the amount of changes, this yields a massive runtime decrease. As
validation data, we provide a graph generator, which produces spe- cific
community structures, at given times and also intermediate steps to transform
the graph from one to another specific graph. Experiments show that runtime
decrease is possible without much loss of quality. These values depend on the
reprocessed area inside the graph.


title:
The Health-Mortality Approach in Estimating the Healthy Life Years Lost
  Compared to the Global Burden of Disease Studies and Applications

abstract:
  We propose a series of methods and models in order to explore the Global
Burden of Disease Study and the provided healthy life expectancy HALE estimates
from the World Health Organization WHO based on the mortality mx of a
population provided in a classical life table and a mortality diagram. Our
estimates are compared with the HALE estimates for the World territories and
the WHO regions along with providing comparative results with to findings of
Chang, Molla, Truman et al. (2015) on the Differences in healthy life
expectancy for the US population by sex, race or ethnicity and geographic
region in 2008 and from Yong and Saito (2009) regarding Trends in healthy life
expectancy in Japan. From the mortality point of view we have developed a
simple model for the estimation of a characteristic parameter b related to the
healthy life years lost to disability and providing full application details
along with characteristic parameter selection and stability of the
coefficients. We also provide a direct estimation method of the parameter b
from the life tables. We straighten the importance of our methodology by
proposing and applying estimates of the parameter b by using the Gompertz and
the Weibull models. From the Health State point of view we summarize the main
points of the first exit time theory to life table data and present the basic
models starting from the first related model published by Janssen and Skiadas
(1995). Even more we develop the simpler 2-parameter health state model and an
extension of a model expressing the infant mortality to a 4-parameter model
which is the simpler model providing very good fitting on the logarithm of the
force of mortality. More important is the use of the Health State Function and
the relative impact on mortality to find an estimate for the healthy life years
lost to disability.


title:
A trio of horseshoes: past, present and future dynamical evolution of
  Earth co-orbital asteroids 2015 XX169, 2015 YA and 2015 YQ1

abstract:
  It is widely accepted that a quasi-steady-state flux of minor bodies moving
in and out of the co-orbital state with the Earth may exist. Some of these
objects are very good candidates for future in situ study due to their
favourable dynamical properties. In this paper, we show that the recently
discovered near-Earth asteroids 2015 XX169, 2015 YA and 2015 YQ1 are small
transient Earth co-orbitals. These new findings increase the tally of known
Earth co-orbitals to 17. The three of them currently exhibit asymmetric
horseshoe behaviour subjected to a Kozai resonance and their short-term orbital
evolution is rather unstable. Both 2015 YA and 2015 YQ1 may leave Earth's
co-orbital zone in the near future as they experience close encounters with
Venus, the Earth-Moon system and Mars. Asteroid 2015 XX169 may have remained in
the vicinity of, or trapped inside, the 1:1 mean motion resonance with our
planet for many thousands of years and may continue in that region for a
significant amount of time into the future.


title:
Correlation Measure Equivalence in Dynamic Causal Structures of Quantum
  Gravity

abstract:
  We prove an equivalence transformation between the correlation measure
functions of the causally-unbiased quantum gravity space and the
causally-biased standard space. The theory of quantum gravity fuses the dynamic
(nonfixed) causal structure of general relativity and the quantum uncertainty
of quantum mechanics. In a quantum gravity space, the events are causally
nonseparable and all time bias vanishes, which makes it no possible to use the
standard causally-biased entropy and the correlation measure functions. Since a
corrected causally-unbiased entropy function leads to an undefined, obscure
mathematical structure, in our approach the correction is made in the data
representation of the causally-unbiased space. Here we prove that the standard
causally-biased entropy function with a data correction can be used to identify
correlations in dynamic causal structures. As a corollary, all mathematical
properties of the causally-biased correlation measure functions are preserved
in the causally-unbiased space. The equivalence transformation allows us to
measure correlations in a quantum gravity space with the stable, well-defined
mathematical background and apparatus of the causally-biased functions of
quantum Shannon theory.


title:
From single-shot to general work extraction with bounded fluctuations in
  work

abstract:
  In the standard framework of thermodynamics the work produced or consumed in
a process is a random variable whose average value is bounded by the change in
the free energy of the system. This work is calculated without regard for the
size of its fluctuations. We find that in some processes, such as reversible
cooling, the fluctuations of the work can diverge. Small or fragile thermal
machines may be unable to cope with large fluctuations. Hence, with the present
focus on nano- scale thermodynamics, we analyse how thermodynamic efficiency
rates are modified when the size of the fluctuations around the average is
restricted. We quantify the work content and work of formation of any state
when the work fluctuations are bounded by a given amount c. By varying c we
interpolate between the standard free energy c = infinity and the min-free
energy c = 0, defined in the context of single-shot thermodynamics. We derive
fundamental relations between average work and its fluctuations, and explore
the emergence of irreversibility and partial order on state transformations
when bounding fluctuations. We also study the efficiency a single qubit thermal
engine model with constrained fluctuations, and derive the corrections to the
Carnot efficiency.


title: Alignments of Radio Galaxies in Deep Radio Imaging of ELAIS N1

abstract:
  We present a study of the distribution of radio jet position angles of radio
galaxies over an area of 1 square degree in the ELAIS N1 field. ELAIS N1 was
observed with the Giant Metrewave Radio Telescope at 612 MHz to an rms noise
level of 10 $\mu$Jy and angular resolution of $6"\times 5"$. The image contains
65 resolved radio galaxy jets. The spatial distribution reveals a prominent
alignment of jet position angles along a "filament" of about 1$^{\circ}$. We
examine the possibility that the apparent alignment arises from an underlying
random distribution and find that the probability of chance alignment is less
than 0.1%. An angular covariance analysis of the data indicates the presence of
spatially coherence in position angles on scales $>0.5^{\circ}$. This angular
scales translates to a co-moving scale of $>20h^{-1}$Mpc at a redshift of 1.
  The implied alignment of the spin axes of massive black holes that give rise
the radio jets suggest the presence of large-scale spatial coherence in angular
momentum. Our results reinforce prior evidence for large-scale spatial
alignments of quasar optical polarisation position angles.


title:
An Evolvable Fuzzy Logic System for handoff management in heterogeneous
  Wireless Networks

abstract:
  One of the features of the Next Generation Wireless Networks (NGWNs) is its
heterogeneous communication environment. Heterogeneous networks are ranging
from wireless WAN, LAN, MAN and PAN. The most important parameters in this
regard are different data rates and coverage of these networks. In this paper,
we propose an evolvable fuzzy logic-based algorithm for managing handover
process in heterogeneous wireless networks. We use fuzzy logic system to
determine the right time of initiating the handoff procedure and utilize
Genetic Algorithm (GA) to predict the best form of rules of the fuzzy module.
We implement our proposed scheme on a special simulation model and discuss
about the impact of evolution on the algorithm.


title: New indices of coherence for one or two-dimensional fields

abstract:
  The modern definition of optical coherence highlights a frequency dependent
function based on a matrix of spectra and cross-spectra. Due to general
properties of matrices, such a function is invariant in changes of basis. In
this article, we attempt to measure the proximity of two stationary fields by a
real and positive number between 0 and 1. The extremal values will correspond
to uncorrelation and linear dependence, similar to a correlation coefficient
which measures linear links between random variables. We show that these
"indices of coherence" are generally not symmetric, and not unique. We study
and we illustrate this problem together for one-dimensional and two-dimensional
fields in the framework of stationary processes.


title:
Numerical simulation of liquid jet breakup using smoothed particle
  hydrodynamics (SPH)

abstract:
  In this paper, breakup of liquid jet is simulated using smoothed particle
hydrodynamics (SPH) which is a meshless Lagrangian numerical method. For this
aim, flow governing equations are discretized based on SPH method. In this
paper, SPHysics open source code has been utilized for numerical solutions.
Therefore, the mentioned code has been developed by adding the surface tension
effects. The proposed method is then validated using dam break with obstacle
problem. Finally, simulation of twodimensional liquid jet flow is carried out
and its breakup behavior considering one-phase flow is investigated. Length of
liquid breakup in Rayleigh regime is calculated for various flow conditions
such as different Reynolds and Weber numbers and the results are validated by
an experimental correlation. The whole numerical solutions are accomplished for
both Wendland and cubic spline kernel functions and Wendland kernel function
gave more accurate results. The results are compared to MPS method for inviscid
liquid as well. The accomplished modeling showed that smoothed particle
hydrodynamics (SPH) is an efficient method for simulation of liquid jet breakup
phenomena.


title:
Weak convergence of Galerkin approximations of stochastic partial
  differential equations driven by additive L\'evy noise

abstract:
  This work considers weak approximations of stochastic partial differential
equations (SPDEs) driven by L\'evy noise. The SPDEs at hand are parabolic with
additive noise processes. A weak-convergence rate for the corresponding
Galerkin approximation is derived. The convergence result is derived by use of
the Malliavin derivative rather then the common approach via the Kolmogorov
backward equation.


title: 3D-modelling of the stellar auroral radio emission

abstract:
  The electron cyclotron maser is the coherent emission process that gives rise
to the radio lighthouse effect observed in the hot magnetic chemically peculiar
star CU Virginis. It has also been proposed to explain the highly circularly
polarized radio pulses observed on some ultra cool dwarfs, with spectral type
earlier than M7. Such kind of coherent events resemble the auroral radio
emission from the magnetized planets of the solar system. In this paper, we
present a tridimensional model able to simulate the timing and profile of the
pulses emitted by those stars characterized by a dipolar magnetic field by
following the hypothesis of the laminar source model, used to explain the
beaming of the terrestrial auroral kilometric radiation. This model proves to
be a powerful tool to understand the auroral radio-emission phenomenon,
allowing us to derive some general conclusions about the effects of the model's
free parameters on the features of the coherent pulses, and to learn more about
the detectability of such kind of pulsed radio emission.


title:
Investigation of activation cross sections of proton induced reactions
  on indium up to 70 MeV for practical applications

abstract:
  Excitation functions were measured for production of the $^{113,111,110}$Sn,
$^{115m,114m,113m,112m,111g,110g}$In and $^{111m,109}$Cd radioisotopes by
bombardment of In targets with proton beams up to 70 MeV, some of them for the
first time. The new results are compared with the earlier experimental data and
with the theoretical data in the TENDL-2014 (Talys1.6 based) library. Thick
target yields were deduced and application of the new data for production of
medically relevant $^{110m}$In, $^{111g}$In, $^{113m}$In and $^{114m}$In, as
well as applicability for thin layer activation (TLA) are discussed.


title:
Pressure-induced stabilization of carbonic acid and other compounds in
  the C-H-O system

abstract:
  The physicochemical behavior of elements and compounds is heavily altered by
high pressure. The occurrence of pressure-induced reactions and phase
transitions can be revealed by crystal structure prediction approaches. In this
work, we explore the C-H-O phase diagram up to 400 GPa exploiting an
evolutionary algorithm for crystal structure predictions along with ab initio
calculations. Besides uncovering new stable polymorphs of high-pressure
elements and known molecules, we predicted the formation of new compounds. A
2CH4:3H2 inclusion compound forms at low pressure and remains stable up to 215
GPa. Carbonic acid (H2CO3), highly unstable at ambient conditions, was
predicted to form exothermically at mild pressure (about 1 GPa). As pressure
rises, it polymerizes and, above 300 GPa, reacts with water to form
orthocarbonic acid (H4CO4). This unexpected high-pressure chemistry is
rationalized by analyzing charge density and electron localization function
distributions, and implications for general chemistry and planetary science are
also discussed.


title:
Robust static output feedback control using a Particle Swarm
  Optimization-DE-linear matrix inequality algorithm hybrid algorithm

abstract:
  Under the multi-objective framework, this paper presents a hybrid algorithm
to solve robust static output feedback control problem for continuous
poly-topic uncertain system. To obtain static output feedback gain, a new
hybrid algorithm is proposed by combination of a hybrid algorithm of the
Particle Swarm Optimization and Differential Evolution (DE), and the linear
matrix inequality method. The proposed algorithm is used to solve a
optimization problem with a bi-linear matrix inequality constraints. The
Particle Swarm Optimization-DE hybrid algorithm was used to obtain a population
of controllers, and linear matrix inequality approach was used to optimize a
performance criterion of the system. Taking a hybrid H 2/H infinite control
problem as example, the detailed algorithm is presented to solve robust static
output feedback control problem. The simulation results show that the proposed
hybrid algorithm improves the convergence rate and accuracy of iterative
methods and the original DE-linear matrix inequality algorithm.


title:
Global effect of local skin friction drag reduction in spatially
  developing turbulent boundary layer

abstract:
  A numerical investigation of two locally applied drag reducing control
schemes is carried out in the configuration of a spatially developing turbulent
boundary layer (TBL). One control is designed to damp near-wall turbulence and
the other induces constant mass flux in the wall-normal direction. Both control
schemes yield similar local drag reduction rates within the control region.
However, the flow development downstream of the control significantly differs:
persistent drag reduction is found for the uniform blowing case whereas drag
increase is found for the turbulence damping case. In order to account for this
difference the formulation of a global drag reduction rate is suggested. It
represents the reduction of the streamwise force exerted by the fluid on a
finite length plate. Furthermore, it is shown that the far downstream
development of the TBL after the control region can be described by a single
quantity, namely a streamwise shift of the uncontrolled boundary layer, i.e. a
changed virtual origin. Based on this result, a simple model is developed that
allows relating for the local drag reduction rate to the global one without the
need of conducting expensive simulations or measurements far downstream of the
control region.


title: Upper k-tuple total domination in graphs

abstract:
  Let $G=(V,E)$ be a simple graph. For any integer $k\geq 1$, a subset of $V$
is called a $k$-tuple total dominating set of $G$ if every vertex in $V$ has at
least $k$ neighbors in the set. The minimum cardinality of a minimal $k$-tuple
total dominating set of $G$ is called the $k$-tuple total domination number of
$G$. In this paper, we introduce the concept of upper $k$-tuple total
domination number of $G$ as the maximum cardinality of a minimal $k$-tuple
total dominating set of $G$, and study the problem of finding a minimal
$k$-tuple total dominating set of maximum cardinality on several classes of
graphs, as well as finding general bounds and characterizations. Also, we find
some results on the upper $k$-tuple total domination number of the Cartesian
and cross product graphs.


title:
A mixed-element two-grid discretization for Helmholtz transmission
  eigenvalues

abstract:
  The Helmholtz transmission eigenvalue problem has received much concern in
materials science, so it's significant to explore the efficient calculational
method of the problem to mathematics and mechanics community. In this paper,
based on a variational formulation proposed by Cakon, Monk and Sun, we
introduce a mixed-element two-grid discretization and prove error estimates for
this method theoretically. Some numerical results are presented to confirm the
theoretical analysis and show that the method here is efficient.


title: Double Total Domination in Harary Graphs

abstract:
  Let $G$ be a graph with minimum degree at least 2. A set $D\subseteq V$ is a
double total dominating set of $G$ if each vertex is adjacent to at least two
vertices in $D$. The double total domination number $\gamma _{\times 2,t}(G)$
of $G$ is the minimum cardinality of a double total dominating set of $G$. In
this paper, we will find double total domination number of Harary graphs.


title:
Energy spectrum of confined positively charged excitons in single
  quantum dots

abstract:
  A theoretical model, which relates the binding energy of a positively charged
exciton in a quantum dot with the confinement energy is presented. It is shown
that the binding energy, defined as the energy difference between the
corresponding charged and neutral complexes confined on the same excitonic
shell strongly depends on the shell index. Moreover, it is shown that the ratio
of the binding energy for positively charged excitons from the $p$- and
$s$-shells of a dot depends mainly on the nearly perfect confinement in the
dot, which is due to the "hidden symmetry" of the multi-electron-hole system.
We applied the theory to the excitons confined to a single GaAlAs/AlAs quantum
dots. The relevant binding energy was determined using the
micro-photoluminescence and micro-photoluminescence excitation
magneto-spectroscopy. We show that within our theory, the confinement energy
determined using the ratio of the binding energy corresponds well to the actual
confinement energy of the investigated dot.


title:
Pressure-driven flow of oligomeric fluid in nano-channel with complex
  structure. A dissipative particle dynamics study

abstract:
  We develop a simulational methodology allowing for simulation of the
pressure-driven flow in the pore with flat and polymer-modified walls. Our
approach is based on dissipative particle dynamics and we combine earlier ideas
of fluid-like walls and reverse flow. As a test case we consider the oligomer
flow through the pore with flat walls and demonstrate good thermostatting
qualities of the proposed method. We found the inhomogeneities in both oligomer
shape and alignment across the pore leading to a non-parabolic velocity
profiles. The method is subsequently applied to a nano-channel decorated with a
polymer brush stripes arranged perpendicularly to the flow direction. At
certain threshold value of a flow force we find a pillar-to-lamellar
morphological transition, which leads to the brush enveloping the pore wall by
a relatively smooth layer. At higher flow rates, the flow of oligomer has
similar properties as in the case of flat walls, but for the narrower effective
pore size. We observe stretching and aligning of the polymer molecules along
the flow near the pore walls.


title: k-Tuple Restrained Domination in Graphs

abstract:
  For $k \ge 1$ an integer, a set $S$ of vertices in a graph $G$ with minimum
degree at least~$k-1$ is a $k$-tuple dominating set of $G$ if every vertex of
$S$ is adjacent to at least $k-1$ vertices in $S$ and every vertex of $V(G)
\setminus S$ is adjacent to at least $k$ vertices in $S$; that is, $|N_G[v]
\cap S| \ge k$ for every vertex $v$ of $G$ where $N_G[v]$ denotes the closed
neighborhood of $v$ which consists of $v$ and all neighbors of $v$. A $k$-tuple
restrained dominating set of $G$ is a $k$-tuple dominating set $S$ of $G$ with
the additional property that every vertex outside $S$ has at least $k$
neighbors outside $S$. The minimum cardinality of a $k$-tuple restrained
dominating set of $G$ is the $k$-tuple restrained domination number of $G$.
When $k=1$, the $k$-tuple restrained domination number is the well-studied
restrained domination number. In this paper, we determine the $k$-tuple
restrained domination number of several classes of graphs. Tight upper bounds
on the $k$-tuple restrained domination number of a general graph are
established. We present basic properties of the $k$-tuple restrained domatic
number of a graph which is the maximum number of the classes of a partition of
$V(G)$ into $k$-tuple restrained dominating sets of $G$.