title:
The nest site lottery: how selectively neutral density dependent growth
  suppression induces frequency dependent selection

abstract:
  Modern developments in population dynamics emphasize the role of the turnover
of individuals. In the new approaches stable population size is a dynamic
equilibrium between different mortality and fecundity factors instead of an
arbitrary fixed carrying capacity. The latest replicator dynamics models assume
that regulation of the population size acts through feedback driven by density
dependent juvenile mortality. Here, we consider a simplified model to extract
the properties of this approach. We show that at the stable population size,
the structure of the frequency dependent evolutionary game emerges. Turnover of
individuals induces a lottery mechanism where for each nest site released by a
dead adult individual a single newborn is drawn from the pool of newborn
candidates. This frequency dependent selection leads toward the strategy
maximizing the number of newborns per adult death. However, multiple strategies
can maximize this value. Among them, the strategy with the greatest mortality
(which implies greater instantaneous growth rate) is selected. This result is
important for the discussion about universal fitness measures and which
parameters are maximized by natural selection. This is related to the fitness
measures R0 and r, because the number of newborns per single dead individual
equals lifetime production of newborn R0 in models without ageing. Our model
suggests the existence of another fitness measure which is the combination of
R0 and r. According to the nest site lottery mechanism, at stable population
size, selection favours strategies with the greatest r from those with the
greatest R0.


title:
Fine topological structure of coherent complex light created by carbon
  nanocomposites in LC

abstract:
  Fine complex light structure, optical singularities and electroconductivty of
nematic 5CB doped by multi-walled carbon nanotubes (MWCNTs) were investigated.
MWCNTs gather spontaneously to system of micro scale clusters with random
fractal borders at small enough concentration. They are surrounded by the
striped micro scale cladding which creates optical singularities in propagating
laser beam. Applied transverse electric field above the Freedericksz initiates
homeotropic arrangement of 5CB and the striped inversion walls between
nanotubes clusters what diminishes free energy of a composite. Theory of their
appearance and properties was built. Simultaneously the striped cladding
disappears what can be treated as new mechanism of structure orientation
nonlinearity in nonlinear photonics. Polarization singularities (circular C
points) were measured firstly. Percolation of clusters enhances strongly
electrical conductivity of the system and creates inversion walls even without
applied field. Carbon nanotubes composites in LC form bridge between nano
dopants and micro/macro system and are promising for applications. Elaborated
protocol of singular optics inspection and characterization of LC
nanocomposites is promising tool for applications in modern nanosience and
technique.


title:
Arabic documents classification using fuzzy R.B.F. classifier with
  sliding window

abstract:
  In this paper, we propose a system for contextual and semantic Arabic
documents classification by improving the standard fuzzy model. Indeed,
promoting neighborhood semantic terms that seems absent in this model by using
a radial basis modeling. In order to identify the relevant documents to the
query. This approach calculates the similarity between related terms by
determining the relevance of each relative to documents (NEAR operator), based
on a kernel function. The use of sliding window improves the process of
classification. The results obtained on a arabic dataset of press show very
good performance compared with the literature.


title: Adjacent-Channel Interference in Frequency-Hopping Ad Hoc Networks

abstract:
  This paper considers ad hoc networks that use the combination of coded
continuous-phase frequency-shift keying (CPFSK) and frequency-hopping multiple
access. Although CPFSK has a compact spectrum, some of the signal power
inevitably splatters into adjacent frequency channels, thereby causing
adjacent-channel interference (ACI). The amount of ACI is controlled by setting
the fractional in-band power; i.e., the fraction of the signal power that lies
within the band of each frequency channel. While this quantity is often
selected arbitrarily, a tradeoff is involved in the choice. This paper presents
a new analysis of frequency-hopping ad hoc networks that carefully incorporates
the effect of ACI. The analysis accounts for the shadowing, Nakagami fading,
CPFSK modulation index, code rate, number of frequency channels, fractional
in-band power, and spatial distribution of the interfering mobiles. Expressions
are presented for both outage probability and transmission capacity. With the
objective of maximizing the transmission capacity, the optimal fractional
in-band power that should be contained in each frequency channel is identified.


title: A Class of Permutation Trinomials over Finite Fields

abstract:
  Let $q>2$ be a prime power and $f=-{\tt x}+t{\tt x}^q+{\tt x}^{2q-1}$, where
$t\in\Bbb F_q^*$. We prove that $f$ is a permutation polynomial of $\Bbb
F_{q^2}$ if and only if one of the following occurs: (i) $q$ is even and
$\text{Tr}_{q/2}(\frac 1t)=0$; (ii) $q\equiv 1\pmod 8$ and $t^2=-2$.


title:
Low temperature phase transformations in 4-cyano-4'-pentylbiphenyl (5CB)
  filled by multiwalled carbon nanotubes

abstract:
  The effects of multiwalled carbon nanotubes (NTs) on low-temperature phase
transformations in 5CB were studied by means of differential scanning
calorimetry (DSC), low-temperature photoluminescence and measurements of
electrical conductivity. The concentration of NTs was varied within 0-1% wt.
The experimental data, obtained for pure 5CB by DSC and measurements of
photoluminescence in the heating mode, evidenced the presence of two
crystallization processes at T->229 K and T->262 K, which correspond to
C1a->C1b, and C1b->C2 phase transformations. Increase of temperature T from 10
K to 229 K provoked the red shift of photoluminescence spectral band that was
explained by flattening of 5CB molecule conformation. Moreover, the
photoluminescence data allow to conclude that crystallisation at T=229 K
results in conformation transition to non-planar 5CB structure characteristic
to ideal crystal. The non-planar conformations were dominating in nematic
phase, i.e., at T>297 K. Electrical conductivity data for NTs-5CB composites
revealed supplementary anomaly inside the stable crystalline phase C2,
identified earlier in the temperature range 229 K-296.8 K. It can reflect the
influence of phase transformation of 5CB in interfacial layers on the transport
of charge carriers between NTs.


title: Fifty two years ago in Jerusalem

abstract:
  Short information about the conference in 1960 in Jerusalem is presented
together with an interesting photo where we can find several famous
mathematicians participated in this conference. To recognize the people on the
photo and collect their date of birth and death took me over five years. It was
plan to have ready this note in 2010 on fifty years after conference.
Unfortunately, this was not possible. Stil there are three persons which are
not recognized. Maybe this publication will help to recognize them. In May 2012
I was trying to publish this article in Mathematical Intelligencer, but they
would be willing to consider a longer, substantially revised, version. Also
Notices AMS does not publish articles about conferences.


title:
Measurement of an Excess of B -> D(*) Tau Nu Decays and Implications for
  Charged Higgs Bosons

abstract:
  Based on the full BaBar data sample, we report improved measurements of the
ratios R(D(*)) = B(B -> D(*) Tau Nu)/B(B -> D(*) l Nu), where l is either e or
mu. These ratios are sensitive to new physics contributions in the form of a
charged Higgs boson. We measure R(D) = 0.440 +- 0.058 +- 0.042 and R(D*) =
0.332 +- 0.024 +- 0.018, which exceed the Standard Model expectations by 2.0
sigma and 2.7 sigma, respectively. Taken together, our results disagree with
these expectations at the 3.4 sigma level. This excess cannot be explained by a
charged Higgs boson in the type II two-Higgs-doublet model. Kinematic
distributions presented here exclude large portions of the more general type
III two-Higgs-doublet model, but there are solutions within this model
compatible with the results.


title: New Non-asymptotic Random Channel Coding Theorems

abstract:
  New non-asymptotic random coding theorems (with error probability $\epsilon$
and finite block length $n$) based on Gallager parity check ensemble and
Shannon random code ensemble with a fixed codeword type are established for
discrete input arbitrary output channels. The resulting non-asymptotic
achievability bounds, when combined with non-asymptotic equipartition
properties developed in the paper, can be easily computed. Analytically, these
non-asymptotic achievability bounds are shown to be asymptotically tight up to
the second order of the coding rate as $n$ goes to infinity with either
constant or sub-exponentially decreasing $\epsilon$. Numerically, they are also
compared favourably, for finite $n$ and $\epsilon$ of practical interest, with
existing non-asymptotic achievability bounds in the literature in general.


title:
Roughening transition and universality of single step growth models in
  (2+1)-dimensions

abstract:
  We study (2+1)-dimensional single step model (SSM) for crystal growth
including both deposition and evaporation processes parametrized by a single
control parameter $p$. Using extensive numerical simulations with a relatively
high statistics, we estimate various interface exponents such as roughness,
growth and dynamic exponents as well as various geometric and distribution
exponents of height clusters and their boundaries (or iso-height lines) as
function of $p$. We find that, in contrary to the general belief, there exists
a critical value $p_c\approx 0.25$ at which the model undergoes a roughening
transition from a rough phase with $p<p_c$ in the Kardar-Parisi-Zhang (KPZ)
universality to a smooth phase with $p>p_c$, asymptotically in the
Edwards-Wilkinson (EW) class. We validate our conclusion by estimating the
effective roughness exponents and their extrapolation to the infinite-size
limit.


title:
Gravitino Decays and the Cosmological Lithium Problem in Light of the
  LHC Higgs and Supersymmetry Searches

abstract:
  We studied previously the impact on light-element abundances of gravitinos
decaying during or after Big-Bang nucleosynthesis (BBN). We found regions of
the gravitino mass m_{3/2} and abundance zeta_{3/2} plane where its decays
could reconcile the calculated abundance of Li7 with observation without
perturbing the other light-element abundances unacceptably. Here we revisit
this issue in light of LHC measurements of the Higgs mass and constraints on
supersymmetric model parameters, as well as updates in the astrophysical
measurements of light-element abundances. In addition to the constrained
minimal supersymmetric extension of the Standard Model with universal soft
supersymmetry-breaking masses at the GUT scale (the CMSSM) studied previously,
we also study models with universality imposed below the GUT scale and models
with non-universal Higgs masses (NUHM1). We calculate the total likelihood
function for the light-element abundances, taking into account the
observational uncertainties. We find that gravitino decays provide a robust
solution to the cosmological Li7 problem along strips in the (m_{3/2},
zeta_{3/2}) plane along which the abundances of deuterium, He4 and Li7 may be
fit with chi^2_min < 3, compared with chi^2 ~ 34 if the effects of gravitino
decays are unimportant. The minimum of the likelihood function is reduced to
chi^2 < 2 when the uncertainty on D/H is relaxed and < 1 when the lithium
abundance is taken from globular cluster data.


title: Algebraic vector bundles on punctured affine spaces and smooth quadrics

abstract:
  We construct examples of non-isomorphic algebraic vector bundles on the
punctured affine space with isomorphic pullbacks to the smooth quadric.


title: Fourier transform of algebraic measures

abstract:
  These are notes of a talk based on the work arXiv:1212.3630 joint with A.
Aizenbud.
  Let V be a finite-dimensional vector space over a local field F of
characteristic 0. Let f be a function on V of the form $f(x)= \psi (P(x))$,
where P is a polynomial on V and $\psi$ is a nontrivial additive character of
F. Then it is clear that the Fourier transform of f is well-defined as a
distribution on $V^*$. Due to J.Bernstein, Hrushovski-Kazhdan, and
Cluckers-Loeser, it is known that the Fourier transform is smooth on a
non-empty Zariski-open conic subset of $V^*$. The goal of these notes is to
sketch a proof of this result (and some related ones), which is very simple
modulo resolution of singularities (the existing proofs use D-module theory in
the Archimedean case and model theory in the non-Archimedian one).


title: Unified Theoretical Framework for Polycrystalline Pattern Evolution

abstract:
  The rate of curvature-driven grain growth in polycrystalline materials is
well-known to be limited by interface dissipation. We show analytically and by
simulations that, for systems forming modulated phases or non-equilibrium
patterns with crystal ordering, growth is limited by bulk dissipation
associated with lattice translation, which dramatically slows down grain
coarsening. We also show that bulk dissipation is reduced by thermal noise so
that those systems exhibit faster coarsening behavior dominated by interface
dissipation for high Peierls barrier and high noise. Those results provide a
unified theoretical framework for understanding and modeling polycrystalline
pattern evolution in diverse systems over a broad range of length and time
scales.


title: Quantum Filtering in Coherent States

abstract:
  We derive the form of the Belavkin-Kushner-Stratonovich equation describing
the filtering of a continuous observed quantum system via non-demolition
measurements when the statistics of the input field used for the indirect
measurement are in a general coherent state.


title:
Renormalization group analysis of competing quantum phases in the J1-J2
  Heisenberg model on the kagome lattice

abstract:
  Recent discoveries in neutron scattering experiments for Kapellasite and
Herbertsmithite as well as theoretical calculations of possible spin liquid
phases have revived interest in magnetic phenomena on the kagome lattice. We
study the quantum phase diagram of the S=1/2 Heisenberg kagome model as a
function of nearest neighbor coupling J1 and second neighbor coupling J2.
Employing the pseudofermion functional renormalization group, we find four
types of magnetic quantum order (q=0 order, cuboc order, ferromagnetic order,
and Sqrt{3}x\Sqrt{3} order) as well as extended magnetically disordered regions
by which we specify the possible parameter regime for Kapellasite. In the
disordered regime J2/J1<<1, the flatness of the magnetic susceptibility at the
zone boundary which is observed for Herbertsmithite can be reconciled with the
presence of small J2>0 coupling. In particular, we analyze the dimer
susceptibilities related to different valence bond crystal (VBC) patterns,
which are strongly inhomogeneous indicating the rejection of VBC order in the
RG flow.


title: A Redshift Dependent Color-Luminosity Relation in Type 1a Supernovae

abstract:
  Type 1a supernova magnitudes are used to fit cosmological parameters under
the assumption the model will fit the observed redshift dependence. We test
this assumption with the Union 2.1 compilation of 580 sources. Several
independent tests find the existing model fails to account for a significant
correlation of supernova color and redshift. The correlation of magnitude
residuals relative to the $\Lambda CDM$ model and $color \times redshift$ has a
significance equivalent to 13 standard deviations, as evaluated by randomly
shuffling the data. Extending the existing $B-V$ color correction to a relation
linear in redshift improves the goodness of fit $\chi^{2}$ by more than 50
units, an equivalent 7-$\sigma$ significance, while adding only one parameter.
The $color-redshift$ correlation is quite robust, cannot be attributed to
outliers, and passes several tests of consistency. We review previous hints of
redshift dependence in color parameters found in bin-by-bin fits interpreted as
parameter bias. We show that neither the bias nor the change $\Delta \chi^{2}$
of our study can be explained by those effects. The previously known relation
that bluer supernovae have larger absolute luminosity tends to empirically
flatten out with increasing redshift. The best-fit cosmological dark energy
density parameter is revised from $ \Omega_{\Lambda} =0.71 \pm 0.02$ to $
\Omega_{\Lambda} = 0.74 \pm 0.02$ assuming a flat universe. One possible
physical interpretation is that supernovae or their environments evolve
significantly with increasing redshift.


title: Abundant rich phase transitions in step skew products

abstract:
  We study phase transitions for the topological pressure of geometric
potentials of transitive sets. The sets considered are partially hyperbolic
having a step skew product dynamics over a horseshoe with one-dimensional
fibers corresponding to the central direction. The sets are genuinely
non-hyperbolic containing intermingled horseshoes of different hyperbolic
behavior (contracting and expanding center).
  We prove that for every $k\ge 1$ there is a diffeomorphism $F$ with a
transitive set $\Lambda$ as above such that the pressure map $P(t)=P(t\,
\varphi)$ of the potential $\varphi= -\log \,\lVert dF|_{E^c}\rVert$ ($E^c$ the
central direction) defined on $\Lambda$ has $k$ rich phase transitions. This
means that there are parameters $t_\ell$, $\ell=1,...,k$, where $P(t)$ is not
differentiable and this lack of differentiability is due to the coexistence of
two equilibrium states of $t_\ell\,\varphi$ with positive entropy and different
Birkhoff averages. Each phase transition is associated to a gap in the central
Lyapunov spectrum of $F$ on $\Lambda$.


title:
Multiple Kernel Sparse Representations for Supervised and Unsupervised
  Learning

abstract:
  In complex visual recognition tasks it is typical to adopt multiple
descriptors, that describe different aspects of the images, for obtaining an
improved recognition performance. Descriptors that have diverse forms can be
fused into a unified feature space in a principled manner using kernel methods.
Sparse models that generalize well to the test data can be learned in the
unified kernel space, and appropriate constraints can be incorporated for
application in supervised and unsupervised learning. In this paper, we propose
to perform sparse coding and dictionary learning in the multiple kernel space,
where the weights of the ensemble kernel are tuned based on graph-embedding
principles such that class discrimination is maximized. In our proposed
algorithm, dictionaries are inferred using multiple levels of 1-D subspace
clustering in the kernel space, and the sparse codes are obtained using a
simple levelwise pursuit scheme. Empirical results for object recognition and
image clustering show that our algorithm outperforms existing sparse coding
based approaches, and compares favorably to other state-of-the-art methods.


title: Pressure Dependent Wall Relaxation in Polarized $^3$He Gaseous Cells

abstract:
  Pressure dependence of longitudinal relaxation time (T$_1$) due to the cell
wall was observed previously at both room temperature and low temperature in
valved Rb-coated refillable $^3$He gaseous cells in \cite{Zheng2}. The
diffusion of $^3$He from measurement cell through a capillary tube to the valve
and the subsequent depolarization on the surface of the valve was proposed to
possibly explain such a pressure dependence at room temperature \cite{Saam}. In
this paper, we investigate this diffusion effect through measurements of T$_1$
with newly designed Rb-coated Pyrex glass cells at 295 K as well as finite
element analysis (FEA) studies. Both the experimental results and FEA studies
show that the diffusion effect is insufficient to explain the observed linear
pressure-dependent behavior of T$_1$.


title: Univalent categories and the Rezk completion

abstract:
  We develop category theory within Univalent Foundations, which is a
foundational system for mathematics based on a homotopical interpretation of
dependent type theory. In this system, we propose a definition of "category"
for which equality and equivalence of categories agree. Such categories satisfy
a version of the Univalence Axiom, saying that the type of isomorphisms between
any two objects is equivalent to the identity type between these objects; we
call them "saturated" or "univalent" categories. Moreover, we show that any
category is weakly equivalent to a univalent one in a universal way. In
homotopical and higher-categorical semantics, this construction corresponds to
a truncated version of the Rezk completion for Segal spaces, and also to the
stack completion of a prestack.


title: Slippery Wave Functions V2.01

abstract:
  Superfluids and superconductors are ordinary matter that show a very
surprising behavior at low temperatures. As their temperature is reduced,
materials of both kinds can abruptly fall into a state in which they will
support a persistent, essentially immortal, flow of particles. Unlike anything
in classical physics, these flows engender neither friction nor resistance. A
major accomplishment of Twentieth Century physics was the development of an
understanding of this very surprising behavior via the construction of
partially microscopic and partially macroscopic quantum theories of superfluid
helium and superconducting metals. Such theories come in two parts: a theory of
the motion of particle-like excitations, called quasiparticles, and of the
persistent flows itself via a huge coherent excitation, called a condensate.
Two people, above all others, were responsible for the construction of the
quasiparticle side of the theories of these very special low-temperature
behaviors: Lev Landau and John Bardeen. Curiously enough they both partially
ignored and partially downplayed the importance of the condensate. In both
cases, this neglect of the actual superfluid or superconducting flow interfered
with their ability to understand the implications of the theory they had
created. They then had difficulty assessing the important advances that
occurred immediately after their own great work.
  Some speculations are offered about the source of this unevenness in the
judgments of these two leading scientists.


title: Lagrangian caps

abstract:
  We establish an $h$-principle for exact Lagrangian embeddings with concave
Legendrian boundary. We prove, in particular, that in the complement of the
unit ball $B$ in the standard symplectic $\R^{2n}, 2n\geq 6$, there exists an
embedded Lagrangian $n$-disc transversely attached to $B$ along its Legendrian
boundary.


title: The homology groups of certain moduli spaces of plane sheaves

abstract:
  Using the Bialynicki-Birula method, we determine the additive structure of
the integral homology groups of the moduli spaces of semi-stable sheaves on the
projective plane having rank and Chern classes (5, 1, 4), (7, 2, 6),
respectively, (0, 5, 19). We compute the Hodge numbers of these moduli spaces.


title: Constructing exact Lagrangian immersions with few double points

abstract:
  We establish an $h$-principle for exact Lagrangian immersions with transverse
self-intersections and the minimal, or near-minimal number of double points.
One corollary of our result is that any orientable closed 3-manifold admits an
exact Lagrangian immersion into standard symplectic 6-space $\R^6_\st$ with
exactly one transverse double point. Our construction also yields a Lagrangian
embedding $S^1\times S^2\to\R^6_\st$ with vanishing Maslov class.


title:
A globally convergent algorithm for the frequency sounding and
  Slichter-Langer-Tikhonov problem of electrical prospecting

abstract:
  The paper presents a globally convergent algorithm for solving coefficient
inverse problems. Being rooted in the globally convergent numerical method
(SIAM J. Sci. Comput., 31, No.1 (2008), pp. 478-509) for solving
multidimensional coefficient inverse problems, it has two distinctive features:
the new iterative and refinement procedures. These novelties enhance, sometimes
significantly, both the spatial and contrast resolutions. The computational
effectiveness of the proposed technique is demonstrated in numerical
experiments with two applied coefficient inverse problems: electromagnetic or
acoustic frequency sounding and electrical prospecting of layered media. The
Slichter-Langer-Tikhonov formulation is exploited as a mathematical model of
the latter.


title:
Inhomogeneous dynamic nuclear polarization and suppression of
  electron-polarization decay in a quantum dot

abstract:
  We investigate the dynamic nuclear polarization process by frequently
injecting polarized electron spins into a quantum dot. Due to the suppression
of the direct dipolar and indirect electron-mediated nuclear spin interactions,
by the frequently injected electron spins, the analytical predictions under the
independent spin approximation agree well with quantum numerical simulations.
Our results show that the acquired nuclear polarization is highly
inhomogeneous, proportional to the square of the local electron-nuclear
hyperfine interaction constant, if the injection frequency is high. Utilizing
the inhomogeneously polarized nuclear spins as an initial state, we further
show that the electron-polarization decay time can be extended 100 times even
at a relatively low nuclear polarization (<20%), without much suppression of
the fluctuation of the Overhauser field. Our results lay the foundation for
future investigations of the effect of DNP in more complex spin systems, such
as double quantum dots and nitrogen vacancy centers in diamonds.


title:
Intrinsically discrete channel-gating dynamics at small membrane patch
  area for the Hodgkin-Huxley neurons

abstract:
  This paper has been withdrawn by the author due to some incorrect
presentation in the results and discussion part.


title:
Random Beamforming with Heterogeneous Users and Selective Feedback:
  Individual Sum Rate and Individual Scaling Laws

abstract:
  This paper investigates three open problems in random beamforming based
communication systems: the scheduling policy with heterogeneous users, the
closed form sum rate, and the randomness of multiuser diversity with selective
feedback. By employing the cumulative distribution function based scheduling
policy, we guarantee fairness among users as well as obtain multiuser diversity
gain in the heterogeneous scenario. Under this scheduling framework, the
individual sum rate, namely the average rate for a given user multiplied by the
number of users, is of interest and analyzed under different feedback schemes.
Firstly, under the full feedback scheme, we derive the closed form individual
sum rate by employing a decomposition of the probability density function of
the selected user's signal-to-interference-plus-noise ratio. This technique is
employed to further obtain a closed form rate approximation with selective
feedback in the spatial dimension. The analysis is also extended to random
beamforming in a wideband OFDMA system with additional selective feedback in
the spectral dimension wherein only the best beams for the best-L resource
blocks are fed back. We utilize extreme value theory to examine the randomness
of multiuser diversity incurred by selective feedback. Finally, by leveraging
the tail equivalence method, the multiplicative effect of selective feedback
and random observations is observed to establish the individual rate scaling.


title: Nonlocal Minimal Lawson Cones

abstract:
  We prove the existence of the analog of Lawson's minimal cones for a notion
of nonlocal minimal surface introduced by Caffarelli, Roquejoffre and Savin,
and establish their stability/instability in low dimensions. In particular we
find that there are nonlocal stable minimal cones in dimension 7, in contrast
with the case of classical minimal surfaces.


title: On the Coherence Properties of Random Euclidean Distance Matrices

abstract:
  In the present paper we focus on the coherence properties of general random
Euclidean distance matrices, which are very closely related to the respective
matrix completion problem. This problem is of great interest in several
applications such as node localization in sensor networks with limited
connectivity. Our results can directly provide the sufficient conditions under
which an EDM can be successfully recovered with high probability from a limited
number of measurements.


title: On the Dirichlet problem for Monge-Ampere type equations

abstract:
  In this paper, we prove second derivative estimates together with classical
solvability for the Dirichlet problem of certain Monge-Ampere type equations
under sharp hypotheses. In particular we assume that the matrix function in the
augmented Hessian is regular in the sense used by Trudinger and Wang in their
study of global regularity in optimal transportation [28] as well as the
existence of a smooth subsolution. The latter hypothesis replaces a barrier
condition also used in their work. The applications to optimal transportation
and prescribed Jacobian equations are also indicated.


title: Limits on Lepton Flavor Violation from \mu-e-conversion

abstract:
  We revisit the status of Lepton Flavor Violating (LFV) \mu e qq contact
interactions from the view point of \mu - e -conversion in nuclei. We consider
their contribution to this LFV process via the two mechanisms on the hadronic
level: direct nucleon and meson exchange ones. In the former case the quarks
are embedded directly into the nucleons while in the latter in mesons which
then interact with nucleons in a nucleus. We revise and in some cases
reevaluate the hadronic parameters relevant for both mechanisms and calculate
the contribution of the above mentioned contact interactions in coherent \mu -
e -conversion in various nuclei. Then we update the existing upper bounds and
also derive new ones for the scales of the \mu e qq contact interactions from
the experimental limits on the capture rates of \mu - e -conversion. We compare
these limits with the ones derived in the literature from other LFV processes
and comment on the prospects of LHC searches related to the contact \mu e qq
interactions.


title:
The Velocity of Censorship: High-Fidelity Detection of Microblog Post
  Deletions

abstract:
  Weibo and other popular Chinese microblogging sites are well known for
exercising internal censorship, to comply with Chinese government requirements.
This research seeks to quantify the mechanisms of this censorship: how fast and
how comprehensively posts are deleted.Our analysis considered 2.38 million
posts gathered over roughly two months in 2012, with our attention focused on
repeatedly visiting "sensitive" users. This gives us a view of censorship
events within minutes of their occurrence, albeit at a cost of our data no
longer representing a random sample of the general Weibo population. We also
have a larger 470 million post sampling from Weibo's public timeline, taken
over a longer time period, that is more representative of a random sample.
  We found that deletions happen most heavily in the first hour after a post
has been submitted. Focusing on original posts, not reposts/retweets, we
observed that nearly 30% of the total deletion events occur within 5- 30
minutes. Nearly 90% of the deletions happen within the first 24 hours.
Leveraging our data, we also considered a variety of hypotheses about the
mechanisms used by Weibo for censorship, such as the extent to which Weibo's
censors use retrospective keyword-based censorship, and how repost/retweet
popularity interacts with censorship. We also used natural language processing
techniques to analyze which topics were more likely to be censored.


title:
A Newer User Authentication, File encryption and Distributed Server
  Based Cloud Computing Security Architecture

abstract:
  The cloud computing platform gives people the opportunity for sharing
resources, services and information among the people of the whole world. In
private cloud system, information is shared among the persons who are in that
cloud. For this, security or personal information hiding process hampers. In
this paper we have proposed new security architecture for cloud computing
platform. This ensures secure communication system and hiding information from
others. AES based file encryption system and asynchronous key system for
exchanging information or data is included in this model. This structure can be
easily applied with main cloud computing features, e.g. PaaS, SaaS and IaaS.
This model also includes onetime password system for user authentication
process. Our work mainly deals with the security system of the whole cloud
computing platform.


title: Compound Perfect Squared Squares of the Order Twenties

abstract:
  P. J. Federico used the term low-order for perfect squared squares with at
most 28 squares in their dissection. In 2010 low-order compound perfect squared
squares (CPSSs) were completely enumerated. Up to symmetries of the square and
its squared subrectangles there are 208 low-order CPSSs in orders 24 to 28. In
2012 the CPSSs of order 29 were completely enumerated, giving a total of 620
CPSSs up to order 29.


title: Optical Control of a Quantum Rotor

abstract:
  The possibility to coherently control a quantum rotor is investigated
theoretically. The rotor is realized by an antiferromagnetic spin-1
Bose-Einstein condensate, trapped in the optical field of a Fabry-Perot
resonator. By tuning the pumping field of the resonator, coherent control over
the rotor is achieved. The technique is illustrated by the numerical simulation
of a protocol that transforms the rotor's ground state into a squeezed state.
The detection of the squeezed state via measurement of intensity-correlations
of the cavity field is proposed.


title: Introduction of the CDEX experiment

abstract:
  Weakly Interacting Massive Particles (WIMPs) are the candidates of dark
matter in our universe. Up to now any direct interaction of WIMP with nuclei
has not been observed yet. The exclusion limits of the spin-independent cross
section of WIMP-nucleon which have been experimentally obtained is about
10^{-7}pb at high mass region and only 10^{-5}pb} at low mass region. China
Jin-Ping underground laboratory CJPL is the deepest underground lab in the
world and provides a very promising environment for direct observation of dark
matter. The China Dark Matter Experiment (CDEX) experiment is going to directly
detect the WIMP flux with high sensitivity in the low mass region. Both CJPL
and CDEX have achieved a remarkable progress in recent two years. The CDEX
employs a point-contact germanium semi-conductor detector PCGe whose detection
threshold is less than 300 eV. We report the measurement results of Muon flux,
monitoring of radioactivity and Radon concentration carried out in CJPL, as
well describe the structure and performance of the 1 kg PCGe detector CDEX-1
and 10kg detector array CDEX-10 including the detectors, electronics, shielding
and cooling systems. Finally we discuss the physics goals of the CDEX-1,
CDEX-10 and the future CDEX-1T detectors.

categories: physics.ins-det astro-ph.IM hep-ex hep-ph


title: Two particular EA-type binaries in the globular cluster omega Centauri

abstract:
  We analyzed the B and V light curves of two EA-type binaries V211 and NV358
using the WD code for the first time. Our analysis shows that V211 is a typical
Algol-type binary and NV358 is a well detached binary system. As the two
binaries are definite proper motion members of omega Centauri, we estimated
their physical parameters, obtaining M_1=1.13\pm0.03M_\odot,
R_1=0.98\pm0.01R_\odot and M_2=0.33\pm0.01M_\odot, R_2=0.92\pm0.01R_\odot for
V211; M_1=1.30\pm0.05M_\odot, R_1=1.03\pm0.01R_\odot and
M_2=0.58\pm0.02M_\odot, R_2=0.78\pm0.01R_\odot for NV358. On the
color-magnitude diagram of omega Centauri, V211 is located in the faint blue
straggler region and its primary component is more massive than a star at the
main-sequence turnoff. Therefore, V211 is a blue straggler and should be formed
by mass transfer from the secondary component to the primary. The age of NV358
is less than 1.93 Gyr, indicating that it is much younger than first-generation
stars in omega Centauri. As NV364 in omega Centauri, NV358 should be a
second-generation binary.


title:
A scheme for realizing continuously tunable spectrum in the visible
  light region based on monatomic carbon chains

abstract:
  We propose a scheme for realizing the continuously tunable spectrum based on
monatomic carbon chains. By hybrid density functional calculations, we first
show that the direct band gap of monatomic carbon chains change continuously
from 1.58 to 3.8 eV as strain is applied from -5 to 10% to the chain, with
separated Van Hove singularity peaks enhanced. To realize this tunability, a
realistic stretching device is proposed by contacting the chain with graphene
sheets, which can apply up to 9% elongation to the chain, yielding tunable
light-emitting wavelengths from 345 to 561 nm.


title:
Reflection-asymmetric nuclear deformations within the Density Functional
  Theory

abstract:
  Within the nuclear density functional theory (DFT) we study the effect of
reflection-asymmetric shapes on ground-state binding energies and binding
energy differences. To this end, we developed the new DFT solver AxialHFB that
uses an approximate second-order gradient to solve the Hartree-Fock-Bogoliubov
equations of superconducting DFT with the quasi-local Skyrme energy density
functionals. Illustrative calculations are carried out for even-even isotopes
of radium and thorium.


title:
Explicit Constructions of Large Families of Generalized More Sums Than
  Differences Sets

abstract:
  A More Sums Than Differences (MSTD) set is a set of integers A contained in
{0, ..., n-1} whose sumset A+A is larger than its difference set A-A. While it
is known that as n tends to infinity a positive percentage of subsets of {0,
..., n-1} are MSTD sets, the methods to prove this are probabilistic and do not
yield nice, explicit constructions. Recently Miller, Orosz and Scheinerman gave
explicit constructions of a large family of MSTD sets; though their density is
less than a positive percentage, their family's density among subsets of {0,
..., n-1} is at least C/n^4 for some C>0, significantly larger than the
previous constructions, which were on the order of 1 / 2^{n/2}. We generalize
their method and explicitly construct a large family of sets A with |A+A+A+A| >
|(A+A)-(A+A)|. The additional sums and differences allow us greater freedom
than in Miller, Orosz and Scheinerman, and we find that for any epsilon>0 the
density of such sets is at least C / n^epsilon. In the course of constructing
such sets we find that for any integer k there is an A such that |A+A+A+A| -
|A+A-A-A| = k, and show that the minimum span of such a set is 30.


title: Quantum Information Transmission over a Partially Degradable Channel

abstract:
  We investigate a quantum coding for quantum communication over a PD
(partially degradable) degradable quantum channel. For a PD channel, the
degraded environment state can be expressed from the channel output state up to
a degrading map. PD channels can be restricted to the set of optical channels
which allows for the parties to exploit the benefits in experimental quantum
communications. We show that for a PD channel, the partial degradability
property leads to higher quantum data rates in comparison to those of a
degradable channel. The PD property is particular convenient for quantum
communications and allows one to implement the experimental quantum protocols
with higher performance. We define a coding scheme for PD-channels and give the
achievable rates of quantum communication.


title: Sterile Neutrino Search Using China Advanced Research Reactor

abstract:
  We study the feasibility of a sterile neutrino search at the China Advanced
Research Reactor by measuring $\bar {\nu}_e$ survival probability with a
baseline of less than 15 m. Both hydrogen and deuteron have been considered as
potential targets. The sensitivity to sterile-to-regular neutrino mixing is
investigated under the "3(active)+1(sterile)" framework. We find that the
mixing parameter $\sin^2(2\theta_{14})$ can be severely constrained by such
measurement if the mass square difference $\Delta m_{14}^2$ is of the order of
$\sim$1 eV$^2$.


title:
Iterative conformal mapping approach to diffusion-limited aggregation
  with surface tension effect

abstract:
  We present a simple method for incorporating the surface tension effect into
an iterative conformal mapping model of two-dimensional diffusion-limited
aggregation. A curvature-dependent growth probability is introduced and the
curvature is given by utilizing the branch points of a conformal map. The
resulting cluster exhibits a crossover from compact to fractal growth. In the
fractal growth regime, it is confirmed, by the conformal map technique, that
the fractal dimension of its area and perimeter length coincide.


title: Space--Time Tradeoffs for Subset Sum: An Improved Worst Case Algorithm

abstract:
  The technique of Schroeppel and Shamir (SICOMP, 1981) has long been the most
efficient way to trade space against time for the SUBSET SUM problem. In the
random-instance setting, however, improved tradeoffs exist. In particular, the
recently discovered dissection method of Dinur et al. (CRYPTO 2012) yields a
significantly improved space--time tradeoff curve for instances with strong
randomness properties. Our main result is that these strong randomness
assumptions can be removed, obtaining the same space--time tradeoffs in the
worst case. We also show that for small space usage the dissection algorithm
can be almost fully parallelized. Our strategy for dealing with arbitrary
instances is to instead inject the randomness into the dissection process
itself by working over a carefully selected but random composite modulus, and
to introduce explicit space--time controls into the algorithm by means of a
"bailout mechanism".


title:
QCD sum rule study on the $f_0(980)$ structure as a pure $K \bar{K}$
  bound state

abstract:
  We perform a QCD sum rule analysis for the scalar $f_0(980)$ meson to
investigate whether it can be described as a pure bound state of $K$ and
$\bar{K}$ mesons. Based on the QCD sum rule with the operators of up to
dimension 10 within the operator product expansion, we found that it is hard to
treat the $f_0(980)$ as a simple $K\bar{K}$ bound state, which implies that the
$f_0(980)$ scalar meson has more complicated structure being mixed states of
various configurations.


title: Detection of supernova neutrinos on the Earth for large theta13

abstract:
  Supernova (SN) neutrinos detected on the Earth are subject to the shock wave
effects, the Mikheyev-Smirnov-Wolfenstein (MSW) effects, the neutrino
collective effects and the Earth matter effects. Considering the recent
experimental result about the large mixing angle $\theta_{13}$
($\backsimeq8.8^{\circ}$) provided by the Daya Bay Collaboration and applying
the available knowledge for the neutrino conversion probability in the high
resonance of SN, $P_{H}$, which is in the form of hypergeometric function in
the case of large $\theta_{13}$, we deduce the expression of $P_{H}$ taking
into account the shock wave effects. It is found that $P_{H}$ is not zero in a
certain range of time due to the shock wave effects. After considering all the
four physical effects and scanning relevant parameters, we calculate the event
numbers of SN neutrinos detected at the Daya Bay experiment. From the numerical
results, it is found that the behaviors of neutrino event numbers detected on
the Earth depend on the neutrino mass hierarchy and neutrino spectrum
parameters including the temperature $T_{\alpha}$, the dimensionless pinching
parameter $\eta_{\alpha}$ or $\beta_{\alpha}$ (where $\alpha$ refers to
neutrino flavor), the average energy $< E_{\alpha}>$, and the SN neutrino
luminosities $L_{\alpha}$. We also compare the results of two parametrization
methods for the neutrino energy distributions and give the ranges of SN
neutrino event numbers that will be detected at the Daya Bay experiment.


title: Multifractal Distribution of Dendrite on One-dimensional Support

abstract:
  We apply multifractal analysis to an experimentally obtained
quasi-two-dimensional crystal with fourfold symmetry, in order to characterize
the sidebranch structure of a dendritic pattern. In our analysis, the stem of
the dendritic pattern is regarded as a one-dimensional support on which a
measure is defined and the measure is identified with the area, perimeter
length, and growth rate distributions. It is found that these distributions
have multifractality and the results for the area and perimeter length
distributions, in the competitive growth regime of sidebranches, are
phenomenologically understood as a simple partitioning process.


title: On families of lagrangian tori on hyperkaehler manifolds

abstract:
  This is a note on Beauville's problem (solved by Greb, Lehn and Rollenske in
the non-algebraic case and by Hwang and Weiss in general) whether a lagrangian
torus on an irreducible holomorphic symplectic manifold is a fiber of a
lagrangian fibration. We provide a different, very short solution in the
non-algebraic case and make some observations suggesting a different approach
in the algebraic case.


title: Bounding the speed of `spooky action at a distance'

abstract:
  In the well-known EPR paper, Einstein et al. called the nonlocal correlation
in quantum entanglement as `spooky action at a distance'. If the spooky action
does exist, what is its speed? All previous experiments along this direction
have locality loopholes and thus can be explained without having to invoke any
`spooky action' at all. Here, we strictly closed the locality loopholes by
observing a 12-hour continuous violation of Bell inequality and concluded that
the lower bound speed of `spooky action' was four orders of magnitude of the
speed of light if the Earth's speed in any inertial reference frame was less
than 10^(-3) times of the speed of light.


title:
Construction of Fractal Surfaces by Recurrent Fractal Interpolation
  Curves

abstract:
  A method to construct fractal surfaces by recurrent fractal curves is
provided. First we construct fractal interpolation curves using a recurrent
iterated functions system(RIFS) with function scaling factors and estimate
their box-counting dimension. Then we present a method of construction of wider
class of fractal surfaces by fractal curves and Lipschitz functions and
calculate the box-counting dimension of the constructed surfaces. Finally, we
combine both methods to have more flexible constructions of fractal surfaces.


title:
Assessment of various natural orbitals as the basis of large active
  space density matrix renormalization group calculations

abstract:
  It is well-known that not only the orbital ordering but also the choice of
the orbitals themselves as the basis may significantly influence the
computational efficiency of density-matrix renormalization group (DMRG)
calculations. In this study, for assessing the efficiency of using various
natural orbitals (NOs) as the DMRG basis, we performed benchmark DMRG
calculations with different bases, which included the NOs obtained by various
traditional electron correlation methods, as well as NOs acquired from
preliminary moderate DMRG calculations (e.g., preserved states less than 500).
The tested systems included N$_2$, transition metal Cr$_2$ systems, as well as
1-D hydrogen polyradical chain systems under equilibrium and dissociation
conditions and 2-D hydrogen aggregates. The results indicate that a good
compromise between the requirement for low computational costs of acquiring NOs
and the demand for high efficiency of NOs as the basis of DMRG calculations may
be very dependent on the studied systems' diverse electron correlation
characteristics and the size of the active space. It is also shown that a
DMRG-complete active space configuration interaction (DMRG-CASCI) calculation
in a basis of carefully chosen NOs can provide a less expensive alternative to
the standard DMRG-CASSCF calculation and avoid the convergence difficulties of
orbital optimization for large active spaces. The effect of different NO
ordering schemes on DMRG-CASCI calculations is also discussed.


title:
Calculating excited states of molecular aggregates by the renormalized
  excitonic method

abstract:
  In this paper, we apply the recently developed ab initio renormalized
excitonic method (REM) to the excitation energy calculations of various
molecular aggregates, through the extension of REM to the time-dependent
density functional theory (TDDFT). Tested molecular aggregate systems include
one-dimensional hydrogen-bonded water chains, ring crystals with $\pi$-$\pi$
stacking or van-der Waals interactions and the general aqueous systems with
polar and non-polar solutes. The basis set factor as well as the effect of the
exchange-correlation functionals are also investigated. The results indicate
that the REM-TDDFT method with suitable basis set and exchange-correlation
functionals can give good descriptions of excitation energies and excitation
area for lowest electronic excitations in the molecular aggregate systems with
economic computational costs. It's shown that the deviations of REM-TDDFT
excitation energies from those by standard TDDFT are much less than 0.1 eV and
the computational time can be reduced by one order.


title:
Convergence of The Relative Value Iteration for the Ergodic Control
  Problem of Nondegenerate Diffusions under Near-Monotone Costs

abstract:
  We study the relative value iteration for the ergodic control problem under a
near-monotone running cost structure for a nondegenerate diffusion controlled
through its drift. This algorithm takes the form of a quasilinear parabolic
Cauchy initial value problem in $\RR^{d}$. We show that this Cauchy problem
stabilizes, or in other words, that the solution of the quasilinear parabolic
equation converges for every bounded initial condition in $\Cc^{2}(\RR^{d})$ to
the solution of the Hamilton--Jacobi--Bellman (HJB) equation associated with
the ergodic control problem.


title:
Switching of anisotropy and phase diagram of a Heisenberg square lattice
  S=1/2 antiferromagnet Cu(pz)2(ClO4)2

abstract:
  Experiments in the antiferromagnetic phase of a quasi 2D $S=1/2$ quasi-square
lattice antiferromagnet Cu(pz)2(ClO4)2 reveal a biaxial type of the anisotropy,
instead of the easy-plane one, considered before. The weak in-plane anisotropy,
found by means of electron spin resonance spectroscopy and magnetization
measurements, is about an order of magnitude weaker, than the off-plane
anisotropy. The weak in-plane anisotropy results in a spin-flop phase
transition for the magnetic field aligned along easy axis, and, thereby, in a
bicritical point on the phase diagram. A remarkable feature of the weak
in-plane anisotropy is the abrupt change of its sign at the spin-flop point.
This anisotropy switching disappears at the tilting of magnetic field to the
easy axis by the angle of 10$^\circ$ within the plane. The nature of the abrupt
anisotropy reversal remains unclear. The phase diagram is characterized by the
increase of the ordering temperature in the magnetic field used, except for a
dip near the bicritical point.


title:
Effects of pulse collisions in a multilayer system with noninstantaneous
  cubic nonlinearity

abstract:
  The numerical simulations of an ultrashort pulse propagation in a
one-dimensional nonlinear photonic crystal are carried out. It is known that
the relaxation of cubic nonlinearity is the reason for the effect of pulse
self-trapping in such multilayer system. In this paper we study further
implications of this effect. It is shown that the trapped light absorbs
additional low-intensity pulses which cannot be self-trapped \textit{per se}.
On the other hand, such low-intensity pulses are subject of the so-called
induced trapping when light gets trapped due to a collision of two such pulses.
We consider the conditions for this effect in both cases of co- and
counter-propagating pulses.


title:
Potential energy surfaces of actinide and transfermium nuclei from
  multi-dimensional constraint covariant density functional theories

abstract:
  Multi-dimensional constrained covariant density functional theories were
developed recently. In these theories, all shape degrees of freedom
\beta_{\lambda\mu} deformations with even \mu are allowed, e.g., \beta_{20},
\beta_{22}, \beta_{30}, \beta_{32}, \beta_{40}, \beta_{42}, \beta_{44}, and so
on and the CDFT functional can be one of the following four forms: the meson
exchange or point-coupling nucleon interactions combined with the non-linear or
density-dependent couplings. In this contribution, some applications of these
theories are presented. The potential energy surfaces of actinide nuclei in the
(\beta_{20}, \beta_{22}, \beta_{30}) deformation space are investigated. It is
found that besides the octupole deformation, the triaxiality also plays an
important role upon the second fission barriers. The non-axial
reflection-asymmetric \beta_{32} shape in some transfermium nuclei with N =
150, namely 246Cm, 248Cf, 250Fm, and 252No are studied.


title:
Elimination of the Landau pole in QCD with the spontaneously generated
  anomalous three-gluon interaction

abstract:
  We apply the Bogoliubov compensation principle to QCD. The non-trivial
solution of compensation equations for a spontaneous generation of the
anomalous three-gluon interaction leads to the determination of parameters of
the theory, including behavior of the gauge coupling $\alpha_s(Q^2)$ without
the Landau singularity, the gluon condensate $V_2\,\simeq\,0.01\,GeV^4$, mass
of the lightest glueball $M_G\,\simeq\,1500\,MeV$ in satisfactory agreement
with the phenomenological knowledge. The results strongly support the
applicability of N.N. Bogoliubov compensation approach to gauge theories of the
Standard Model.


title:
Noncyclic geometric phase in counting statistics and its role as an
  excess contribution

abstract:
  We propose an application of fiber bundles to counting statistics. The
framework of the fiber bundles gives a splitting of a cumulant generating
function for current in a stochastic process, i.e., contributions from the
dynamical phase and the geometric phase. We will show that the introduced
noncyclic geometric phase is related to a kind of excess contributions, which
have been investigated a lot in nonequilibrium physics. Using a specific
nonequilibrium model, the characteristics of the noncyclic geometric phase are
discussed; especially, we reveal differences between a geometric contribution
for the entropy production and the `excess entropy production' which has been
used to discuss the second law of steady state thermodynamics.


title:
Broad K$\alpha$ iron line from accretion disks around traversable
  wormholes

abstract:
  It has been proposed that the supermassive black hole candidates at the
centers of galaxies might be wormholes formed in the early Universe and
connecting our Universe with other sister Universes. The analysis of the
profile of the relativistic K$\alpha$ iron line is currently the only available
approach to probe the spacetime geometry around these objects. In this paper, I
compute the expected K$\alpha$ iron line in some wormhole spacetimes and I
compare the results with the line produced around Kerr black holes. The line
produced in accretion disks around non-rotating or very slow-rotating wormholes
is relatively similar to the one expected around Kerr black holes with mid or
high value of spin parameter and current observations are still marginally
compatible with the possibility that the supermassive black hole candidates in
galactic nuclei are these objects. For wormholes with spin parameter $a_*
\gtrsim 0.02$, the associated K$\alpha$ iron line is instead quite different
from the one produced around Kerr black holes, and their existence may already
be excluded.


title:
Galilean Invariant Fluid-Solid Interfacial Dynamics in Lattice Boltzmann
  Simulations

abstract:
  Galilean invariance is a fundamental property; however, although the lattice
Boltzmann equation itself is Galilean invariant, this property is usually not
taken into account in the treatment of the fluid-solid interface. Here, we show
that consideration of Galilean invariance in fluid-solid interfacial dynamics
can greatly enhance the computational accuracy and robustness in a numerical
simulation. Surprisingly, simulations are so vastly improved that the force
fluctuation is very small and a time average becomes unnecessary.


title: Variation on a Theorem by Mues and Steinmetz

abstract:
  Let $f$ be a meromorphic function. We suggest a generalization of $f$ and its
derivative $f'$ sharing a nonzero value $a$ IM that does not impose any a
priori restrictions on the ramification of $f$. Then we discuss some results
around the question whether the famous theorem on entire functions $f$ that
share two values IM with $f'$ still holds for this weaker notion.


title: A few remarks on orthogonal polynomials

abstract:
  Knowing a sequence of moments of a given, infinitely supported, distribution
we obtain quickly: coefficients of the power series expansion of monic
polynomials $\left\{ p_{n}\right\} _{n\geq 0}$ that are orthogonal with respect
to this distribution, coefficients of expansion of $x^{n}$ in the series of
$p_{j},$ $j\leq n$, two sequences of coefficients of the 3-term recurrence of
the family of $\left\{ p_{n}\right\} _{n\geq 0}$, the so called "linearization
coefficients" i.e. coefficients of expansion of $% p_{n}p_{m}$ in the series of
$p_{j},$ $j\leq m+n.$\newline Conversely, assuming knowledge of the two
sequences of coefficients of the 3-term recurrence of a given family of
orthogonal polynomials $\left\{ p_{n}\right\} _{n\geq 0},$ we express with
their help: coefficients of the power series expansion of $p_{n}$, coefficients
of expansion of $x^{n}$ in the series of $p_{j},$ $j\leq n,$ moments of the
distribution that makes polynomials $\left\{ p_{n}\right\} _{n\geq 0}$
orthogonal. \newline Further having two different families of orthogonal
polynomials $\left\{ p_{n}\right\} _{n\geq 0}$ and $\left\{ q_{n}\right\}
_{n\geq 0}$ and knowing for each of them sequences of the 3-term recurrences,
we give sequence of the so called "connection coefficients" between these two
families of polynomials. That is coefficients of the expansions of $p_{n}$ in
the series of $q_{j},$ $j\leq n.$\newline We are able to do all this due to
special approach in which we treat vector of orthogonal polynomials $\left\{
p_{j}\left( x)\right) \right\} _{j=0}^{n}$ as a linear transformation of the
vector $\left\{ x^{j}\right\} _{j=0}^{n}$ by some lower triangular $(n+1)\times
(n+1)$ matrix $\mathbf{\Pi }_{n}.$


title:
The Yang-Mills \alpha -flow in vector bundles over four manifolds and
  its applications

abstract:
  In this paper, we introduce an \alpha -flow for the Yang-Mills functional in
vector bundles over four dimensional Riemannian manifolds, and establish global
existence of a unique smooth solution to the \alpha -flow with smooth initial
value. We prove that the limit of solutions of the \alpha -flow as \alpha\to 1
is a weak solution to the Yang-Mills flow. By an application of the \alpha
-flow, we then follow the idea of Sacks and Uhlenbeck to prove some existence
results for Yang-Mills connections and improve the minimizing result of the
Yang-Mills functional of Sedlacek.


title: Recent results from Kaon Physics

abstract:
  A short review of recent results and future prospects in kaon physics is
presented. Recent measurements performed at the NA48, NA62, KLOE and KTeV
experiments on CP and Lepton Flavour violation and rare decays will be
summarised, together with measurements of CKM elements and Chiral Perturbation
Theory tests.


title:
Exact conservation and breaking of pseudospin symmetry in single
  particle resonant states

abstract:
  In this contribution we present some results on the study of pseudospin
symmetry (PSS) in single particle resonant states. The PSS is a relativistic
dynamical symmetry connected with the small component of the nucleon Dirac wave
function. Many efforts have been made to study this symmetry in bound states.
We recently gave a rigorous justification of the PSS in single particle
resonant states by examining the zeros of Jost functions corresponding to the
small components of the radial Dirac wave functions and phase shifts of
continuum states [1, Phys. Rev. Lett. 109 (2012) 072501]. We have shown that
the PSS in single particle resonant states in nuclei is conserved when the
attractive scalar and repulsive vector potentials have the same magnitude but
opposite sign. Examples of exact conservation and breaking of this symmetry in
single particle resonances are given for spherical square-well and Woods-Saxon
potentials.


title: Modeling for the Dynamics of Human Innovative Behaviors

abstract:
  How to promote the innovative activities is an important problem for modern
society. In this paper, combining with the evolutionary games and information
spreading, we propose a lattice model to investigate dynamics of human
innovative behaviors based on benefit-driven assumption. Simulations show
several properties in agreement with peoples' daily cognition on innovative
behaviors, such as slow diffusion of innovative behaviors, gathering of
innovative strategy on "innovative centers", and quasi-localized dynamics.
Furthermore, our model also emerges rich non-Poisson properties in the
temporal-spacial patterns of the innovative status, including the scaling law
in the interval time of innovation releases and the bimodal distributions on
the spreading range of innovations, which would be universal in human
innovative behaviors. Our model provide a basic framework on the study of the
issue relevant to the evolution of human innovative behaviors and the promotion
measurement of innovative activities.


title:
Supplement to "Reversible MCMC on Markov equivalence classes of sparse
  directed acyclic graphs"

abstract:
  This supplementary material includes three parts: some preliminary results,
four examples, an experiment, three new algorithms, and all proofs of the
results in the paper "Reversible MCMC on Markov equivalence classes of sparse
directed acyclic graphs".


title:
Omega Model for Human Detection and Counting for application in Smart
  Surveillance System

abstract:
  Driven by the significant advancements in technology and social issues such
as security management, there is a strong need for Smart Surveillance System in
our society today. One of the key features of a Smart Surveillance System is
efficient human detection and counting such that the system can decide and
label events on its own. In this paper we propose a new, novel and robust
model, The Omega Model, for detecting and counting human beings present in the
scene. The proposed model employs a set of four distinct descriptors for
identifying the unique features of the head, neck and shoulder regions of a
person. This unique head neck shoulder signature given by the Omega Model
exploits the challenges such as inter person variations in size and shape of
peoples head, neck and shoulder regions to achieve robust detection of human
beings even under partial occlusion, dynamically changing background and
varying illumination conditions. After experimentation we observe and analyze
the influences of each of the four descriptors on the system performance and
computation speed and conclude that a weight based decision making system
produces the best results. Evaluation results on a number of images indicate
the validation of our method in actual situation.


title:
Indian Sign Language Recognition Using Eigen Value Weighted Euclidean
  Distance Based Classification Technique

abstract:
  Sign Language Recognition is one of the most growing fields of research
today. Many new techniques have been developed recently in these fields. Here
in this paper, we have proposed a system using Eigen value weighted Euclidean
distance as a classification technique for recognition of various Sign
Languages of India. The system comprises of four parts: Skin Filtering, Hand
Cropping, Feature Extraction and Classification. Twenty four signs were
considered in this paper, each having ten samples, thus a total of two hundred
forty images was considered for which recognition rate obtained was 97 percent.


title:
Recognition of Facial Expression Using Eigenvector Based Distributed
  Features and Euclidean Distance Based Decision Making Technique

abstract:
  In this paper, an Eigenvector based system has been presented to recognize
facial expressions from digital facial images. In the approach, firstly the
images were acquired and cropping of five significant portions from the image
was performed to extract and store the Eigenvectors specific to the
expressions. The Eigenvectors for the test images were also computed, and
finally the input facial image was recognized when similarity was obtained by
calculating the minimum Euclidean distance between the test image and the
different expressions.


title:
Ground-state phase diagram and magnetization process of the exactly
  solved mixed spin-(1,1/2) Ising diamond chain

abstract:
  The ground state and magnetization process of the mixed spin-(1,1/2) Ising
diamond chain is exactly solved by employing the generalized
decoration-iteration mapping transformation and the transfer-matrix method. The
decoration-iteration transformation is first used in order to establish a
rigorous mapping equivalence with the corresponding spin-1
Blume-Emery-Griffiths chain in a non-zero magnetic field, which is subsequently
exactly treated within the framework of the transfer-matrix technique. It is
shown that the ground-state phase diagram includes just four different ground
states and the low-temperature magnetization curve may exhibit an intermediate
plateau precisely at one half of the saturation magnetization. Our rigorous
results disprove recent Monte Carlo simulations of Zihua Xin et al. [Z. Xin, S.
Chen, C. Zhang, J. Magn. Magn. Mater. 324 (2012) 3704], which imply an
existence of the other magnetization plateaus at 0.283 and 0.426 of the
saturation magnetization.


title: Ramsey interferometry using the Zeeman sublevels in a spin-2 Bose gas

abstract:
  We perform atom interferometry using the Zeeman sublevels of a spin-2
Bose-Einstein condensate of $^{87}$Rb. The observed fringes are strongly
peaked, and fringe repetition rates higher than the fundamental Ramsey
frequency are found in agreement with a simple theory based on spin rotations.
With a suitable choice of initial states, the interferometer could function as
a useful tool for magnetometry and studies of spinor dynamics in general.


title: Early UV/Optical Emission of The Type Ib SN 2008D

abstract:
  We propose an alternative explanation for the post-breakout emission of SN
2008D associated with the X-ray transient 080109. Observations of this object
show a very small contrast of 0.35 dex between the light-curve minimum
occurring soon after the breakout, and the main luminosity peak that is due to
radioactive heating of the ejecta. Hydrodynamical models show that the cooling
of a shocked Wolf-Rayet star leads to a much greater difference (> 0.9 dex).
Our proposed scenario is that of a jet produced during the explosion which
deposits 56Ni-rich material in the outer layers of the ejecta. The presence of
high-velocity radioactive material allows us to reproduce the complete
luminosity evolution of the object. Without outer 56Ni it could be possible to
reproduce the early emission purely from cooling of the shocked envelope by
assuming a larger progenitor than a Wolf-Rayet star, but that would require an
initial density structure significantly different from what is predicted by
stellar evolution models. Analytic models of the cooling phase have been
proposed reproduce the early emission of SN 2008D with an extended progenitor.
However, we found that the models are valid only until 1.5 days after the
explosion where only two data of SN 2008D are available. We also discuss the
possibility of the interaction of the ejecta with a binary companion, based on
published analytic expressions. However, the binary separation required to fit
the early emission should be < 3 Rsun which is too small for a system
containing two massive stars.


title:
Comparing Hydrodynamic Models with Observations of Type II Plateau
  Supernovae

abstract:
  In this Thesis I developed a one-dimensional Lagrangian hydrodynamic code
with flux-limited radiation diffusion including gamma-ray transfer in gray
approximation for any given distribution of 56Ni. The code was used to model
bolometric light curves of Type II Plateau supernovae (SNe II-P). Using the
models I performed a consistent comparison with our own large dataset of highly
precise, well-sampled BVI light curves and spectra of SNe II-P. I studied
observational and physical properties of our set of SNe II-P and I analyzed the
correlations between different observed and physical parameters with the aim of
characterizing the explosion and progenitor properties of such events.


title: Topological stirring of two-dimensional atomic Bose-Einstein condensates

abstract:
  We stir vortices into a trapped quasi two-dimensional atomic Bose-Einstein
condensate by moving three laser stirrers. We apply stirring protocols
introduced by Boyland et. al. (2000) that efficiently build in topological
chaos in classical fluids and are classified as Pseudo-Anosov stirring
protocols. These are compared to their inefficient mixing counterparts,
finite-order stirring protocols. We investigate if inefficient stirring
protocols result in a more clustered distribution of vortices. The efficiency
with which vortices are 'mixed' or distributed in a condensate is important for
investigating dynamics of continuously forced quantum turbulence and the
existence of the inverse cascade in turbulent two-dimensional superfluids.


title:
Landau-Zener tunneling in 2D periodic structures in the presence of a
  gauge field II: Electric breakdown

abstract:
  We analyze dynamics of a quantum particle in a square lattice in the Hall
configuration beyond the single-band approximation. For vanishing gauge
(magnetic) field this dynamics is defined by the inter-band Landau-Zener
tunneling, which is responsible for the phenomenon known as the electric
breakdown. We show that in the presence of a gauge field this phenomenon is
absent, at least, in its common sense. Instead, the Landau-Zener tunneling
leads to appearance of a finite current which flows in the direction orthogonal
to the vector of a potential (electric) field.


title: Bayesian Compressed Regression

abstract:
  As an alternative to variable selection or shrinkage in high dimensional
regression, we propose to randomly compress the predictors prior to analysis.
This dramatically reduces storage and computational bottlenecks, performing
well when the predictors can be projected to a low dimensional linear subspace
with minimal loss of information about the response. As opposed to existing
Bayesian dimensionality reduction approaches, the exact posterior distribution
conditional on the compressed data is available analytically, speeding up
computation by many orders of magnitude while also bypassing robustness issues
due to convergence and mixing problems with MCMC. Model averaging is used to
reduce sensitivity to the random projection matrix, while accommodating
uncertainty in the subspace dimension. Strong theoretical support is provided
for the approach by showing near parametric convergence rates for the
predictive density in the large p small n asymptotic paradigm. Practical
performance relative to competitors is illustrated in simulations and real data
applications.


title: Alignment of the photoelectron spectroscopy beamline at NSRL

abstract:
  The photoelectron spectroscopy beamline at National Synchrotron Radiation
Laboratory (NSRL) is equipped with a spherical grating monochromator with the
included angle of 174 deg. Three gratings with line density of 200, 700 and
1200 lines/mm are used to cover the energy region from 60 eV to 1000 eV. After
several years operation, the spectral resolution and flux throughput were
deteriorated, realignment is necessary to improve the performance. First, the
wavelength scanning mechanism, the optical components position and the exit
slit guide direction are aligned according to the design value. Second, the
gratings are checked by Atomic Force Microscopy (AFM). And then the gas
absorption spectrum is measured to optimize the focusing condition of the
monochromator. The spectral resolving power is recovered to the designed value
of 1000@244eV. The flux at the end station for the 200 lines/mm grating is
about 10^10 photons/sec/200mA, which is in accordance with the design. The
photon flux for the 700 lines/mm grating is about 5 X 10^8 photons/sec/200mA,
which is lower than expected. This poor flux throughput may be caused by carbon
contamination on the optical components. The 1200 lines/mm grating has
roughness much higher than expected so the diffraction efficiency is too low to
detect any signal. A new grating would be ordered. After the alignment, the
beamline has significant performance improvements in both the resolving power
and the flux throughput for 200 and 700 lines/mm gratings and is provided to
users.


title:
Automatic symmetry based cluster approach for anomalous brain
  identification in PET scan image : An Analysis

abstract:
  Medical image segmentation is referred to the segmentation of known anatomic
structures from different medical images. Normally, the medical data researches
are more complicated and an exclusive structures. This computer aided diagnosis
is used for assisting doctors in evaluating medical imagery or in recognizing
abnormal findings in a medical image. To integrate the specialized knowledge
for medical data processing is helpful to form a real useful healthcare
decision making system. This paper studies the different symmetry based
distances applied in clustering algorithms and analyzes symmetry approach for
Positron Emission Tomography (PET) scan image segmentation. Unlike CT and MRI,
the PET scan identifies the structure of blood flow to and from organs. PET
scan also helps in early diagnosis of cancer and heart, brain and gastro
intestinal ailments and to detect the progress of treatment. In this paper, the
scope diagnostic task expands for PET image in various brain functions.


title:
Symmetry Based Cluster Approach for Automatic Recognition of the
  Epileptic Focus in Brain Using PET Scan Image : An Analysis

abstract:
  Recognition of epileptic focal point is the important diagnosis when
screening the epilepsy patients for latent surgical cures. The accurate
localization is challenging one because of the low spatial resolution images
with more noisy data. Positron Emission Tomography (PET) has now replaced the
issues and caring a high resolution. This paper focuses the research of
automated localization of epileptic seizures in brain functional images using
symmetry based cluster approach. This approach presents a fully automated
symmetry based brain abnormality detection method for PET sequences. PET images
are spatially normalized to Digital Imaging and Communications in Medicine
(DICOM) standard and then it has been trained using symmetry based cluster
approach using Medical Image Processing, Analysis & Visualization (MIPAV) tool.
The performance evolution is considered by the metric like accuracy of
diagnosis. The obtained result is surely assists the surgeon for the automated
identification of seizures focus.


title: The Zen of Multidisciplinary Team Recommendation

abstract:
  In order to accomplish complex tasks, it is often necessary to compose a team
consisting of experts with diverse competencies. However, for proper
functioning, it is also preferable that a team be socially cohesive. A team
recommendation system, which facilitates the search for potential team members
can be of great help both for (i) individuals who need to seek out
collaborators and (ii) managers who need to build a team for some specific
tasks.
  A decision support system which readily helps summarize such metrics, and
possibly rank the teams in a personalized manner according to the end users'
preferences, can be a great tool to navigate what would otherwise be an
information avalanche.
  In this work we present a general framework of how to compose such subsystems
together to build a composite team recommendation system, and instantiate it
for a case study of academic teams.


title:
Spatial Fuzzy C Means PET Image Segmentation of Neurodegenerative
  Disorder

abstract:
  Nuclear image has emerged as a promising research work in medical field.
Images from different modality meet its own challenge. Positron Emission
Tomography (PET) image may help to precisely localize disease to assist in
planning the right treatment for each case and saving valuable time. In this
paper, a novel approach of Spatial Fuzzy C Means (PET SFCM) clustering
algorithm is introduced on PET scan image datasets. The proposed algorithm is
incorporated the spatial neighborhood information with traditional FCM and
updating the objective function of each cluster. This algorithm is implemented
and tested on huge data collection of patients with brain neuro degenerative
disorder such as Alzheimers disease. It has demonstrated its effectiveness by
testing it for real world patient data sets. Experimental results are compared
with conventional FCM and K Means clustering algorithm. The performance of the
PET SFCM provides satisfactory results compared with other two algorithms


title: A priori bounds for positive solutions of subcritical elliptic equations

abstract:
  We provide a-priori $L^\infty$ bounds for positive solutions to a class of
subcritical elliptic problems in bounded $C^2$ domains. Our arguments rely on
the moving planes method applied on the Kelvin transform of solutions. We prove
that locally the image through the inversion map of a neighborhood of the
boundary contains a convex neighborhood; applying the moving planes method, we
prove that the transformed functions have no extremal point in a neighborhood
of the boundary of the inverted domain. Retrieving the original solution $u$,
the maximum of any positive solution in the domain $\Om,$ is bounded above by a
constant multiplied by the maximum on an open subset strongly contained in
$\Om.$ The constant and the open subset depend only on geometric properties of
$\Om,$ and are independent of the non-linearity and on the solution $u$. Our
analysis answers a longstanding open problem.


title: Emergent Novel Metallic State in a Disordered 2D Mott Insulator

abstract:
  It is well established that for non-interacting electrons, increasing
disorder drives a metal into a gapless localized Anderson insulator. While in
three dimensions a threshold in disorder must be crossed for the transition, in
two dimensions and lower, the smallest amount of disorder destabilizes the
metal. The nature of the metal-insulator transition in an interacting system
remains unresolved. Here we explore the effect of disorder on a strongly
correlated Mott insulator without changing the carrier concentration. Angle
resolved photoemission spectroscopy (ARPES) measurements on copper intercalated
single crystals of the layered dichalcogenide 1T-TaS2 reveal the presence of
new delocalized states within the Mott gap. This is the first experimental
realization of a novel disorder-induced metal that was theoretically predicted
to exist between the Mott insulator and Anderson insulator.


title:
Multiscaling in Hall-Magnetohydrodynamic Turbulence: Insights from a
  Shell Model

abstract:
  We show that a shell-model version of the three-dimensional
Hall-magnetohydrodynamic (3D Hall-MHD) equations provides a natural theoretical
model for investigating the multiscaling behaviors of velocity and magnetic
structure functions. We carry out extensive numerical studies of this shell
model, obtain the scaling exponents for its structure functions, in both the
low-$k$ and high-$k$ power-law ranges of 3D Hall-MHD, and find that the
extended-self-similarity (ESS) procedure is helpful in extracting the
multiscaling nature of structure functions in the high-$k$ regime, which
otherwise appears to display simple scaling. Our results shed light on
intriguing solar-wind measurements.


title: Fine gradings and gradings by root systems on simple Lie algebras

abstract:
  Given a fine abelian group grading on a finite dimensional simple Lie algebra
over an algebraically closed field of characteristic zero, with universal
grading group $G$, it is shown that the induced grading by the free group
$G/\tor(G)$ is a grading by a (not necessarily reduced) root system.
  Some consequences for the classification of fine gradings on the exceptional
simple Lie algebras are drawn.


title:
Signature of proximity induced triplet superconductivity in junctions
  made of the doped topological insulator $\rm Bi_2Se_3$ and the s-wave
  superconductor NbN

abstract:
  Thin film junctions and bilayers of the doped topological insulator $\rm
Bi_2Se_3$ and the s-wave superconductor NbN were found to exhibit conductance
spectra with prominent zero bias and coherence peaks. Various tunneling models
with different pair potentials have failed to fit our data, except for the
triplet $p_x+ip_y$ pair potential, which breaks time reversal symmetry, but
yielded reasonably good fits. This provides evidence for proximity induced
triplet superconductivity in the $\rm Bi_2Se_3$ layer near the interface with
the NbN film.


title:
Final state Coulomb interaction and asymmetry of pair production close
  to threshold in $e^+e^-$ annihilation

abstract:
  We investigate a contribution of the $d$ wave to the cross section of
$e^+e^-$ annihilation to the pair of charged leptons or nucleons close to
threshold of the process. In contrast to the point of view accepted in
literature, due to the Coulomb final state interaction this contribution does
not vanish even at zero relative velocity of produced particles. This results
in the nonzero asymmetry in angular distribution at threshold. Though value of
the asymmetry is small, observation of this effect is not hopeless.


title:
Environmental Time Series Interpolation Based on Spartan Random
  Processes

abstract:
  In many environmental applications, time series are either incomplete or
irregularly spaced. We investigate the application of the Spartan random
process to missing data prediction. We employ a novel modified method of
moments (MMoM) for parameter inference. The CPU time of MMoM is shown to be
much faster than that of maximum likelihood estimation and almost independent
of the data size. We formulate an explicit Spartan interpolator for estimating
missing data. The model validation is performed on both synthetic data and real
time series of atmospheric aerosol concentrations. The prediction performance
is shown to be comparable with that attained by the best linear unbiased
(Kolmogorov-Wiener) predictor at reduced computational cost.


title:
Locally Lipschitz contractibility of Alexandrov spaces and its
  applications

abstract:
  We prove that any finite dimensional Alexandrov space with a lower curvature
bound is locally Lipschitz contractible. As applications, we obtain a
sufficient condition for solving the Plateau problem in an Alexandrov space
considered by Mese and Zulkowski.


title: Properties of derivations on some convolution algebras

abstract:
  For all the convolution algebras $L^1[0,1),\ L^1_{\text{loc}}$ and
$A(\omega)=\bigcap_n L^1(\omega_n)$, the derivations are of the form $D_{\mu}
f=Xf*\mu$ for suitable measures $\mu$, where $(Xf)(t)=tf(t)$. We describe the
(weakly) compact as well as the (weakly) Montel derivations on these algebras
in terms of properties of the measure $\mu$. Moreover, for all these algebras
we show that the extension of $D_{\mu}$ to a natural dual space is weak-star
continuous.


title: An Erd\H os--Ko--Rado theorem for cross $t$-intersecting families

abstract:
  Two families $\mathcal{A}$ and $\mathcal{B}$, of $k$-subsets of an $n$-set,
are {\em cross $t$-intersecting} if for every choice of subsets $A \in
\mathcal{A}$ and $B \in \mathcal{B}$ we have $|A \cap B| \geq t$. We address
the following conjectured cross $t$-intersecting version of the Erd\H
os--Ko--Rado Theorem: For all $n \geq (t+1)(k-t+1)$ the maximum value of
$|\mathcal{A}||\mathcal{B}|$ for two cross $t$-intersecting families
$\mathcal{A}, \mathcal{B} \subset\binom{[n]}{k}$ is $\binom{n-t}{k-t}^2$. We
verify this for all $t \geq 14$ except finitely many $n$ and $k$ for each fixed
$t$. Further, we prove uniqueness and stability results in these cases,
showing, for instance, that the families reaching this bound are unique up to
isomorphism. We also consider a {\em $p$-weight} version of the problem, which
comes from the product measure on the power set of an $n$-set.


title: Geometry on Big-Tangent Manifolds

abstract:
  Motivated by generalized geometry, we discuss differential geometric
structures on the total space $\mathfrak{T}M$ of the bundle $TM\oplus T^*M$,
where $M$ is a differentiable manifold; $\mathfrak{T}M$ is called a big-tangent
manifold. The vertical leaves of the bundle are para-Hermitian vector spaces.
The big-tangent manifolds are endowed with canonical presymplectic, Poisson and
2-nilpotent structures. We discuss lifting processes from $M$ to
$\mathfrak{T}M$. From the point of view of the theory of $G$-structures, the
structure of a big-tangent manifold is equivalent with a suitable triple
$(P,Q,S)$, where $P$ is a regular bivector field, $Q$ is a 2-contravariant
symmetric tensor field of the same rank as $P$ and $S$ is a 2-nilpotent
$(1,1)$-tensor field. The integrability conditions include the annulation of
the Schouten-Nijenhuis bracket $[P,P]$, the annulation of the Nijenhuis tensor
$\mathcal{N}_S$ and conditions that connect between the three tensor fields. We
discuss horizontal bundles and associated linear connections with the Bott
property. Then, we discuss metrics on the vertical bundle that are compatible
with the para-Hermitian metric of the leaves. Together with a horizontal
bundle, such metrics may be seen as a generalization of the double fields of
string theory with the role of double fields over a manifold. We define a
canonical connection and the action functional of such a field.


title: Jet Production in $pp$ Collisions: Dependence on Jet Algorithm

abstract:
  We report on a recent calculation of single-inclusive high-$p_T$ jet
production in unpolarized and longitudinally polarized $pp$ collisions at RHIC,
investigating the effect of the algorithm adopted to define the jets on the
numerical results for cross sections and spin asymmetries.


title:
Complete Analysis on the Short Distance Contribution of $B_s\to
  \ell^+\ell^-\gamma$ in Standard Model

abstract:
  Using the $B_s$ meson wave function extracted from non-leptonic $B_s$ decays,
we evaluate the short distance contribution of rare decays $B_s\to
\ell^+\ell^-\gamma(\ell=e,\mu)$ in the standard model, including all the
possible diagrams. We focus on the contribution from four-quark operators which
are not taken into account properly in previous researches. We found that the
contribution is large, leading to the branching ratio of $B_s\to
\ell^+\ell^-\gamma$ being nearly enhanced by a factor 3 and up to $1.7\times
10^{-8}$. The predictions for such processes can be tested in the LHC-b and B
factories in near future.


title:
Perfectly conducting channel on the dark surface of weak topological
  insulators

abstract:
  A weak topological insulator (WTI) bears, generally, an even number of Dirac
cones on its surface; they are susceptible of doubling, while on the surface of
a certain orientation it shows no Dirac cone. On this "dark" surface of a WTI,
we predict the existence of a single pair of isolated 1D perfectly conducting
channels that forms either a closed loop or a segment of a line. The former is
associated typically with a single atomic-layer-thick island formed on the dark
surface, while the latter is shown to be the consequence of a pair of crystal
(screw) dislocations terminating on the dark surface.


title: Theory of weights in p-adic cohomology

abstract:
  Let k be a finite field of characteristic p>0. We construct a theory of
weights for overholonomic complexes of arithmetic D-modules with Frobenius
structure on varieties over k. The notion of weight behave like Deligne's one
in the l-adic framework: first, the six operations preserve weights, and
secondly, the intermediate extension of an immersion preserves pure complexes
and weights.


title: Denoising Deep Neural Networks Based Voice Activity Detection

abstract:
  Recently, the deep-belief-networks (DBN) based voice activity detection (VAD)
has been proposed. It is powerful in fusing the advantages of multiple
features, and achieves the state-of-the-art performance. However, the deep
layers of the DBN-based VAD do not show an apparent superiority to the
shallower layers. In this paper, we propose a denoising-deep-neural-network
(DDNN) based VAD to address the aforementioned problem. Specifically, we
pre-train a deep neural network in a special unsupervised denoising greedy
layer-wise mode, and then fine-tune the whole network in a supervised way by
the common back-propagation algorithm. In the pre-training phase, we take the
noisy speech signals as the visible layer and try to extract a new feature that
minimizes the reconstruction cross-entropy loss between the noisy speech
signals and its corresponding clean speech signals. Experimental results show
that the proposed DDNN-based VAD not only outperforms the DBN-based VAD but
also shows an apparent performance improvement of the deep layers over
shallower layers.


title: CO Induced Adatom Sintering in a Model Catalyst: Pd/Fe3O4

abstract:
  The coarsening of catalytically-active metal clusters is often accelerated by
the presence of gases through the formation of mobile intermediates, though the
exact mechanism through which this happens is often subject to debate. We use
scanning tunneling microscopy (STM) to follow the CO induced coalescence of Pd
adatoms supported on the Fe3O4(001) surface at room temperature. We show that
highly-mobile Pd-carbonyl species, formed via the so-called skyhook effect, are
temporarily trapped at other Pd adatoms. Once these reach a critical density,
clusters nucleate; subsequent coarsening occurs through cluster diffusion and
coalescence. While CO increases the mobility in the Pd/Fe3O4 system, surface
hydroxyls have the opposite effect. Pd atoms transported to surface OH groups
are no longer susceptible to the skyhook effect and remain isolated. Following
the evolution from well-dispersed metal adatoms into clusters, atom-by-atom,
allows identification of the key processes that underlie gas-induced mass
transport.


title: Personalized News Recommendation with Context Trees

abstract:
  The profusion of online news articles makes it difficult to find interesting
articles, a problem that can be assuaged by using a recommender system to bring
the most relevant news stories to readers. However, news recommendation is
challenging because the most relevant articles are often new content seen by
few users. In addition, they are subject to trends and preference changes over
time, and in many cases we do not have sufficient information to profile the
reader.
  In this paper, we introduce a class of news recommendation systems based on
context trees. They can provide high-quality news recommendation to anonymous
visitors based on present browsing behaviour. We show that context-tree
recommender systems provide good prediction accuracy and recommendation
novelty, and they are sufficiently flexible to capture the unique properties of
news articles.


title:
Recent progress in spin calculations in the post-Newtonian framework and
  applications

abstract:
  Recently we derived the next-to-next-to-leading order post-Newtonian
Hamiltonians at spin-orbit and spin(1)-spin(2) level for a binary system of
compact objects. In this talk the derivation of them will be shortly outlined
at an introductory level. We will also discuss some checks of our (complicated
and long) results in the first part of the talk. In the second part we will
show how to apply our results to the calculation of the last stable circular
orbit of such a binary system of black holes or neutron stars.


title: Query Expansion Using Term Distribution and Term Association

abstract:
  Good term selection is an important issue for an automatic query expansion
(AQE) technique. AQE techniques that select expansion terms from the target
corpus usually do so in one of two ways. Distribution based term selection
compares the distribution of a term in the (pseudo) relevant documents with
that in the whole corpus / random distribution. Two well-known
distribution-based methods are based on Kullback-Leibler Divergence (KLD) and
Bose-Einstein statistics (Bo1). Association based term selection, on the other
hand, uses information about how a candidate term co-occurs with the original
query terms. Local Context Analysis (LCA) and Relevance-based Language Model
(RM3) are examples of association-based methods. Our goal in this study is to
investigate how these two classes of methods may be combined to improve
retrieval effectiveness. We propose the following combination-based approach.
Candidate expansion terms are first obtained using a distribution based method.
This set is then refined based on the strength of the association of terms with
the original query terms. We test our methods on 11 TREC collections. The
proposed combinations generally yield better results than each individual
method, as well as other state-of-the-art AQE approaches. En route to our
primary goal, we also propose some modifications to LCA and Bo1 which lead to
improved performance.


title:
Probing Supersymmetric Model with Heavy Sfermions Using Leptonic Flavor
  and CP Violations

abstract:
  We study leptonic flavor and CP violating observables in supersymmetric
(SUSY) models with heavy sfermions, which is motivated by the recent results of
the LHC experiments (i.e., the discovery of the Higgs-like boson with the mass
of about 126 GeV and the negative searches for the superparticles). Even if the
sfermion masses are of O(10-100 TeV), signals may be within the reach of future
leptonic flavor- and CP-violation experiments assuming that the off-diagonal
elements of the sfermion mass matrices are unsuppressed compared to the
diagonal ones. We also consider the SUSY contribution to the K0-K0bar mixing
paraemters; we show that the leptonic observables can become as powerful as
those in K0-K0bar mixing to constrain SUSY models.


title: Second Order Asymptotics for Random Number Generation

abstract:
  We treat a random number generation from an i.i.d. probability distribution
of $P$ to that of $Q$. When $Q$ or $P$ is a uniform distribution, the problems
have been well-known as the uniform random number generation and the
resolvability problem respectively, and analyzed not only in the context of the
first order asymptotic theory but also that in the second asymptotic theory. On
the other hand, when both $P$ and $Q$ are not a uniform distribution, the
second order asymptotics has not been treated. In this paper, we focus on the
second order asymptotics of a random number generation for arbitrary
probability distributions $P$ and $Q$ on a finite set. In particular, we derive
the optimal second order generation rate under an arbitrary permissible
confidence coefficient.


title:
Penalized Likelihood and Bayesian Function Selection in Regression
  Models

abstract:
  Challenging research in various fields has driven a wide range of
methodological advances in variable selection for regression models with
high-dimensional predictors. In comparison, selection of nonlinear functions in
models with additive predictors has been considered only more recently. Several
competing suggestions have been developed at about the same time and often do
not refer to each other. This article provides a state-of-the-art review on
function selection, focusing on penalized likelihood and Bayesian concepts,
relating various approaches to each other in a unified framework. In an
empirical comparison, also including boosting, we evaluate several methods
through applications to simulated and real data, thereby providing some
guidance on their performance in practice.


title: How Uncertainty bounds the shape index of simple cells

abstract:
  We propose a theoretical motivation to quantify actual physiological
features, such as the shape index distributions measured by Jones and Palmer in
cats and by Ringach in macaque monkeys. We will adopt the Uncertainty Principle
associated to the task of detection of position and orientation as the main
tool to provide quantitative bounds on the family of simple cells concretely
implemented in primary visual cortex.


title:
What The $K_{E4}$ Decay Tells Us On A Value Of $\Sigma$-Particle Mass
  And On A Nature Of The Spin-1 Mesons

abstract:
  The data on the form factors of the $K_{e4}$ decay permit to fix a value of
the non-specified in the theory parameter entering in the lagrangian of the
system of $0^+$ and $0^-$ mesons . Then, for a mass of the lightest
$\sigma$-meson we find: $m_{\sigma}$=663 MeV. As for a nature of the spin-1
mesons, also contributing into $K_{e4}$ form factors, the data do not allow to
interpret them as the gauge bosons of the chiral theory.


title:
Hybrid-Lambda: simulation of multiple merger and Kingman gene
  genealogies in species networks and species trees

abstract:
  Hybrid-Lambda is a software package that simulates gene trees under Kingman
or two Lambda-coalescent processes within species networks or species trees. It
is written in C++, and re- leased under GNU General Public License (GPL)
version 3. Users can modify and make new dis- tribution under the terms of this
license. For details of this license, visit http://www.gnu.org/licenses/.
Hybrid Lambda is available at https://code.google.com/p/hybrid-lambda.