cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Novel magnetoelectric effects via penta-linear interactions
Creators: name: Zhao, Hong Jian
name: Grisolia, M. N.
name: Yang, Yurong
name: Iniguez, Jorge
name: Bibes, M.
name: Chen, Xiang Ming
name: Bellaiche, L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applied Physics (physics.app-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Magnetoelectric multiferroic materials, particularly with the perovskite structure, are receiving a lot of attention because of their inherent coupling between electrical polarization and magnetic ordering. However, very few types of direct coupling between polarization and magnetization are known, and it is unclear whether they can be useful to the design of novel spintronic devices exploiting the control of magnetization by electric fields. For instance, the typical bi-quadratic coupling only allows to change the magnitude of the magnetization by an electric field, but it does not permit an electric-field-induced switching of the magnetization. Similarly, the so-called Lifshitz invariants allow an electric-field control of complicated magnetic orderings, but not of the magnetization. Here, we report the discovery of novel direct couplings between polarization and magnetization in epitaxial perovskite films, via the use of first-principles methods and the development of an original Landau-type phenomenological theory. Our results feature penta-linear interactions involving the ferromagnetic and anti-ferromagnetic vectors as well as the polar distortions and oxygen octahedral tilting, and permit a number of striking effects. Examples include a continuous electric-field control of the magnetization magnitude and sign, and the discrete switching of the magnetization magnitude. Thus, the high-order, penta-linear couplings demonstrated in this work may open new paths towards novel magneto-electric effects, as well as, spintronic and magnonic devices.
description: Work supported by ERC Consolidator grant MINT (Contract No. 615759)
Collection, usage and privacy of mobility data in the enterprise and public administrations
Creators: name: Kapp, Alexandra
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Human mobility data is a crucial resource for urban mobility management, but it does not come without personal reference. The implementation of security measures such as anonymization is thus needed to protect individuals' privacy. Often, a trade-off arises as such techniques potentially decrease the utility of the data and limit its use. While much research on anonymization techniques exists, there is little information on the actual implementations by practitioners, especially outside the big tech context. Within our study, we conducted expert interviews to gain insights into practices in the field. We categorize purposes, data sources, analysis, and modeling tasks to provide a profound understanding of the context such data is used in. We survey privacy-enhancing methods in use, which generally do not comply with state-of-the-art standards of differential privacy. We provide groundwork for further research on practice-oriented research by identifying privacy needs of practitioners and extracting relevant mobility characteristics for future standardized evaluations of privacy-enhancing methods.
description: 17 pages, 1 figure, Privacy Enhancing Technologies Symposium
Nonexistence of scattering and modified scattering states for some nonlinear Schrödinger equation with critical homogeneous nonlinearity
Creators: name: Masaki, Satoshi
name: Miyazaki, Hayato
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B44, 35Q55, 35P25

description: We consider large time behavior of solutions to the nonlinear Schrödinger equation with a homogeneous nonlinearity of the critical order which is not necessarily a polynomial. We treat the case in which the nonlinearity contains non-oscillating factor $|u|^{1+2/d}$. The case is excluded in our previous studies. It turns out that there are no solutions that behave like a free solution with or without logarithmic phase corrections. We also prove nonexistence of an asymptotic free solution in the case that the gauge invariant nonlinearity is dominant, and give a finite time blow-up result.
description: 15 pages
MOESM2 of A role of Pumilio 1 in mammalian oocyte maturation and maternal phase of embryogenesis
Creators: name: Mak, Winifred
name: Xia, Jing
name: Cheng, Ee-Chun
name: Lowther, Katie
name: Lin, Haifan
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Evolutionary Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 2: Fig. S2. Two-cell m−z− and m−z+ embryos have more similar transcriptomes to each other than to m+z+ embryos. RNA seq analysis was performed on m+z+ (WT) two-cell embryos from Pum1+/+ reciprocal matings, m−z− (KO) two-cell embryos from Pum1−/− reciprocal matings and m−z+ (HET) two-cell embryos from Pum1−/− females mated with Pum1+/+ male. A The heatmap of Spearman correlation coefficient between the different oocytes and two-cell embryos. B–D Shows the scatterplot for the comparisons of the different two-cell transcriptomes.
Chern Simons invariants in $KK$ theory
Creators: name: Mohsen, Omar
Publisher: name: arXiv
Year: 2018
Subjects: subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics

description: For a unitary representation of the fundamental group of a compact smooth manifold, Atiyah, Patodi, Singer defined the so called alpha-invariant of the representation using Chern-Simons invariants. In this article using traces on C*-algebras, we define intrinsically(i.e without using Chern character) an element in KK-theory with real coefficients theory whose pullback by the representation is the alpha-invariant.
description: Made changes suggested by the referee
Gauge Theory on Noncommutative Supersphere from Supermatrix Model
Creators: name: Iso, Satoshi
name: Umetsu, Hiroshi
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a supermatrix model which has a classical solution representing the noncommutative (fuzzy) two-supersphere. Expanding supermatrices around the classical background, we obtain a gauge theory on a noncommutative superspace on sphere. This theory has $osp(1|2)$ supersymmetry and $u(2L+1|2L)$ gauge symmetry. We also discuss a commutative limit of the model keeping radius of the supersphere fixed.
description: 16 pages, Latex, typos corrected, references added
ОСНОВНЫЕ ПРОБЛЕМЫ ЗАКОНОДАТЕЛЬНОГО РЕГУЛИРОВАНИЯ И НАЛОГООБЛОЖЕНИЯ ИГОРНОГО БИЗНЕСА В РОССИИ
Creators: name: СУЛЕЙМАНОВА А.С.
Publisher: name: УЭПС: управление, экономика, политика, социология
Year: 2018
Subjects: ИГОРНЫЙ БИЗНЕС
АЗАРТНЫЕ ИГРЫ
НАЛОГ НА ИГОРНЫЙ БИЗНЕС
РЕГУЛИРОВАНИЕ ИГОРНОГО БИЗНЕСА
GAMBLING
GAMBLING TAX
GAMBLING REGULATION

description: В данной статье рассматривается основные вопросы зарождения и развития игорного бизнеса в России, а также проблемы, связанные с его законодательным регулированием и налогообложением
Mimicking an Itô process by a solution of a stochastic differential equation
Creators: name: Brunick, Gerard
name: Shreve, Steven
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Given a multi-dimensional Itô process whose drift and diffusion terms are adapted processes, we construct a weak solution to a stochastic differential equation that matches the distribution of the Itô process at each fixed time. Moreover, we show how to match the distributions at each fixed time of functionals of the Itô process, including the running maximum and running average of one of the components of the process. A consequence of this result is that a wide variety of exotic derivative securities have the same prices when the underlying asset price is modeled by the original Itô process or the mimicking process that solves the stochastic differential equation.
Color Diffusion and Conductivity in a Quark-Gluon Plasma
Creators: name: Selikhov, Alexei V.
name: Gyulassy, Miklos
Publisher: name: arXiv
Year: 1993
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Color diffusion is shown to be an important dissipative property of quark-gluon plasmas that rapidly damps collective color modes. We derive the characteristic color relaxation time scale, $t_c\approx (3α_s T \log(m_E/m_M ))^{-1}$, showing its sensitivity to the ratio of the static color electric and magnetic screening masses. This leads to a surprisingly small color conductivity, $σ_c\approx 2 T/\log(m_E/m_M)$, which in fact vanishes in the semi-classical (1-loop) limit.
description: 11 pages, Columbia University Preprint CU-TP-598
Additional file 1 of Insight into the ecology of vaginal bacteria through integrative analyses of metagenomic and metatranscriptomic data
Creators: name: France, Michael
 T.
name: Fu, Li
name: Rutt, Lindsay
name: Yang, Hongqiu
name: Humphrys, Michael S.
name: Narina, Shilpa
name: Gajer, Pawel M.
name: Ma, Bing
name: Forney, Larry J.
name: Ravel, Jacques
Publisher: name: figshare
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Plots that displaying the longitudinal taxonomic composition of the metagenome and metatranscriptome for each subject.
Microstructures minimizing the energy of a two phase elastic composite in two space dimensions.
Creators: name: Grabovsky, Yury
name: Kohn, Robert V.
Publisher: name: Carnegie Mellon University
Year: 1994
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Abstract: "For modeling coherent phase transformations, and for applications to structural optimization, it is of interest to identify microstructures with minimal energy or maximal stiffness. S. Vigdergauz has shown the existence of particularly simple microstructure with extremal elastic behavior, in the context of two-phase composites made from isotropic components in two space dimensions. This 'Vigdergauz microstructure' consists of a periodic array of appropriately shaped inclusions. We provide an alternative discussion of this microstructure and its properties. Our treatment includes an explicit formula for the shape of the inclusion, and an analysis of various limits. We also discuss the significance of this microstructure (i) for minimizing the maximum stress in a composite, and (ii) as a large volume fraction analog of Michell trusses in the theory of structural optimization."
ПРАВОВОЕ РЕГУЛИРОВАНИЕ НАЛОГОВЫХ ВЫЧЕТОВ ПО НАЛОГУ НА ДОХОДЫ ФИЗИЧЕСКИХ ЛИЦ
Creators: name: СУЛЕЙМАНОВА А.С.
Publisher: name: УЭПС: управление, экономика, политика, социология
Year: 2018
Subjects: НАЛОГ НА ДОХОДЫ ФИЗИЧЕСКИХ ЛИЦ
НАЛОГОВЫЕ ВЫЧЕТЫ
НАЛОГОВАЯ БАЗА
НАЛОГОВАЯ ПОЛИТИКА
НАЛОГОПЛАТЕЛЬЩИК
PERSONAL INCOME TAX
TAX DEDUCTIONS
TAX BASE
TAX POLICY
TAXPAYER

description: В статье рассматриваются способы оптимизации и совершенствования налога на доходы физических лиц посредством применения налоговых вычетов. В современных условиях имеет место процесс переориентации НДФЛ от преобладания фискальной к преобладанию социальной функции. При этом механизм исчисления и уплаты НДФЛ постоянно совершенствуется, в том числе путем повышения роли налоговых вычетов
ПУТИ СОВЕРШЕНСТВОВАНИЯ НДФЛ НА ОСНОВЕ ИЗУЧЕНИЯ ЗАРУБЕЖНОГО ОПЫТА
Creators: name: РАСУЛОВА З.Д.
Publisher: name: УЭПС: управление, экономика, политика, социология
Year: 2018
Subjects: PERSONAL INCOME TAX
TAX RATE
PROGRESSIVE TAX SCALE
НАЛОГ НА ДОХОДЫ ФИЗИЧЕСКИХ ЛИЦ
СТАВКА НАЛОГА
ПРОГРЕССИВНАЯ ШКАЛА НАЛОГООБЛОЖЕНИЯ

description: В статье рассмотрен опыт налогообложения доходов физических лиц в разных странах мира. Проанализированы ставки налогообложения по данному виду налога. Обоснована целесообразность применения прогрессивной шкалы налогообложения по НДФЛ в России
Thresholds for hanger slackening and cable shortening in the Melan equation for suspension bridges
Creators: name: Gazzola, Filippo
name: Sperone, Gianmarco
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Physics (physics.class-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Melan equation for suspension bridges is derived by assuming small displacements of the deck and inextensible hangers. We determine the thresholds for the validity of the Melan equation when the hangers slacken, thereby violating the inextensibility assumption. To this end, we preliminarily study the possible shortening of the cables: it turns out that there is a striking difference between even and odd vibrating modes since the former never shorten the cables. These problems are studied both on beams and plates.
Chiral phase from three spin interactions in an optical lattice
Creators: name: D'Cruz, Christian
name: Pachos, Jiannis
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A spin-1/2 chain model that includes three spin interactions can effectively describe the dynamics of two species of bosons trapped in an optical lattice with a triangular-ladder configuration. A perturbative theoretical approach and numerical study of its ground state is performed that reveals a rich variety of phases and criticalities. We identify phases with periodicity one, two or three, as well as critical points that belong in the same universality class as the Ising or the three-state Potts model. We establish a range of parameters, corresponding to a large degeneracy present between phases with period 2 and 3, that nests a gapless incommensurate chiral phase.
description: 8 pages, 9 figures, minor revisions and explanations added
Dual characterization of critical fluctuations: Density functional theory & nonlinear dynamics close to a tangent bifurcation
Creators: name: Riquelme-Galvan, M.
name: Robledo, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We improve on the description of the relationship that exists between critical clusters in thermal systems and intermittency near the onset of chaos in low-dimensional systems. We make use of the statistical-mechanical language of inhomogeneous systems and of the renormalization group (RG) method in nonlinear dynamics to provide a more accurate, formal, approach to the subject. The description of this remarkable correspondence encompasses, on the one hand, the density functional formalism, where classical and quantum mechanical analogues match the procedure for one-dimensional clusters, and, on the other, the RG fixed-point map of functional compositions that captures the essential dynamical behavior. We provide details of how the above-referred theoretical approaches interrelate and discuss the implications of the correspondence between the high-dimensional (degrees of freedom) phenomenon and low-dimensional dynamics.
description: 8 figures
Scalar potential from de Sitter brane in 5D and effective cosmological constant
Creators: name: Ito, Masato
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the scalar potential in zero mode effective action arising from a de Sitter brane embedded in five dimensions with bulk cosmological constant $Λ$. The scalar potential for a scalar field canonically normalized is given by the sum of exponential potentials. In the case of $Λ=0$ and $Λ>0$, we point out that the scalar potential has an unstable local maximum at the origin and exponentially vanishes for large positive scalar field. In the case of $Λ<0$, the scalar potential has an unstable local maximum at the origin and a stable local minimum, it is shown that the positive cosmological constant in brane is reduced by negative potential energy of scalar at minimum.
description: 14 pages, 5 figures, add the section of cosmological implications
A pico-Tesla magnetic sensor with PZT bimorph and permanent magnet proof mass
Creators: name: Srinivasan, G
name: Sreenivasulu, G
name: Qu, Peng
name: Qu, Hongwei
name: Petrov, Vladimir
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Ferromagnetic-ferroelectric composites have attracted interests in recent years for use as magnetic field sensors. The sensing is based on magneto-electric (ME) coupling between the electric and magnetic subsystems and is mediated by mechanical strain. Such sensors for AC magnetic fields require a bias magnetic field to achieve pT-sensitivity. Here we discuss measurements and theory for a novel passive, AC magnetic sensor that does not require a bias magnetic field and is based on a PZT bimorph with a permanent magnet proof mass. Mechanical strain on the PZT bimorph in this case is produced by interaction between the applied AC magnetic field and remnant magnetization of the permanent magnet, resulting in an induced voltage across PZT. Our studies have been performed on sensors with a bimorph of oppositely poled PZT platelets and a NdFeB permanent magnet proof mass. Magnetic floor noise N on the order of 100 pT per sqrHz and 10 nT per sqrHz are measured at 1 Hz and 10 Hz, respectively. When the AC magnetic field is applied at the bending resonance of 40 Hz for the bimorph, the measured N 700 pT per sqrHz. We also discuss a theory for the magneto-electro-mechanical coupling at low frequency and bending resonance in the sensor and theoretical estimates of ME voltage coefficients are in very good agreement with the data.
Forward-backward systems for expected utility maximization
Creators: name: Horst, Ulrich
name: Hu, Ying
name: Imkeller, Peter
name: Réveillac, Anthony
name: Zhang, Jianing
Publisher: name: Weierstrass Institute
Year: 2011
Subjects: subject: Utility maximization
subject: convex duality
subject: maximum principle
subject: coupled quadratic FBSDE
subject: general utility functions
subject: 60H10
subject: 93E20

description: In this paper we deal with the utility maximization problem with a general utility function. We derive a new approach in which we reduce the utility maximization problem with general utility to the study of a fully-coupled Forward-Backward Stochastic Differential Equation (FBSDE).
Bootstrap confidence sets under a model misspecification
Creators: name: Spokoiny, Vladimir
name: Zhilova, Mayya
Publisher: name: Weierstrass Institute
Year: 2014
Subjects: subject: likelihood-based confidence set
subject: misspecified model
subject: finite sample size
subject: multiplier bootstrap
subject: 62F25
subject: 62F40
subject: 62E17
subject: 02.50.Tt
subject: 02.50.Ng

description: A multiplier bootstrap procedure for construction of likelihood-based confidence sets is considered for finite samples and possible model misspecification. Theoretical results justify the bootstrap consistency for small or moderate sample size and allow to control the impact of the parameter dimension: the bootstrap approximation works if the ratio of cube of the parameter dimension to the sample size is small. The main result about bootstrap consistency continues to apply even if the underlying parametric model is misspecified under the so called Small Modeling Bias condition. In the case when the true model deviates significantly from the considered parametric family, the bootstrap procedure is still applicable but it becomes a bit conservative: the size of the constructed confidence sets is increased by the modeling bias. We illustrate the results with numerical examples of misspecified constant and logistic regressions.
On Estimating the QSO Transmission Power Spectrum
Creators: name: Hui, Lam
name: Burles, Scott
name: Seljak, Uros
name: Rutledge, Robert E.
name: Magnier, Eugene
name: Tytler, David
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new methods to minimize the systematic and random errors for measuring the transmission power spectrum from the Lyman-alpha forest. Sources of systematic errors explored include metal line contamination and continuum-fitting. We advocate the technique of trend-removal in place of traditional continuum-fitting -- here, a spectrum is normalized by its (smoothly varying) mean rather than its continuum -- this method is easily automated and removes biases introduced by continuum-fitting. Trend- removal can be easily applied to spectra where continuum-fitting is difficult, such as when the resolution or signal-to-noise is low, or for spectra at high redshifts. Furthermore, a measurement of the continuum power spectrum using trend-removal, from either low redshift quasar spectra or the red-side of Lyman-alpha, allows in principle the removal of spurious power introduced by the continuum and thereby expanding scales probed to larger ones. We also derive expressions for the shot-noise bias and variance of the power spectrum estimate, taking into account the non-Poissonian nature of the shot-noise and the non-Gaussianity of the cosmic fluctuations. An appropriate minimum variance weighting of the data is given. Finally, we give practical suggestions on observing strategy: the desired resolution and S/N for different purposes, and how to distribute one's finite observing time among quasar targets. Also discussed is the quasar spectroscopic study of the Sloan Digital Sky Survey, which has the potential to measure the power spectrum at z ~ 2-4 accurate to better than 1 % per mode -- the techniques presented here will be useful for tackling the anticipated issues of shot-noise and continuum contamination.
description: 35 pages, 14 figures, submitted to ApJ
Microstructures minimizing the energy of a two phase elastic composite in two space dimensions.
Creators: name: Grabovsky, Yury
name: Kohn, Robert V.
Publisher: name: Carnegie Mellon University
Year: 1994
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Abstract: "For modeling coherent phase transformations and for applications to structural optimization, it is of interest to identify microstructures with minimal energy or maximal stiffness. We present a new and appealingly simple class of extremal microstructures, which we call the confocal ellipse construction, for the case of a two-dimensional elastic composite made from two isotropic elastic materials. When the macroscopic stress and strain are isotropic, our construction reduces to the well-known 'coated sphere' microstructure."
Diversity of charge orderings in correlated systems
Creators: name: Kapcia, Konrad Jerzy
name: Barański, Jan
name: Ptok, Andrzej
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The phenomenon associated with inhomogeneous distribution of electron density is known as a charge ordering. In this work, we study the zero-bandwidth limit of the extended Hubbard model, which can be considered as a simple effective model of charge ordered insulators. It consists of the on-site interaction $U$ and the intersite density-density interactions $W_1$ and $W_2$ between nearest-neighbors and next-nearest neighbors, respectively. We derived the exact ground state diagrams for different lattice dimensionalities and discuss effects of small finite temperatures in the limit of high dimensions. In particular, we estimated the critical interactions for which new ordered phases emerge (laminar or stripe and four-sublattice-type). Our analysis show that the ground state of the model is highly degenerated. One of the most intriguing finding is that the nonzero temperature removes these degenerations.
description: 13 pages, 8 figures, ReVTex, submitted to Physical Review E
A density property for fractional weighted Sobolev spaces
Creators: name: Dipierro, Serena
name: Valdinoci, Enrico
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: Weighted fractional Sobolev spaces
subject: density properties
subject: 46E35
subject: 35A15

description: Abstract. In this paper we show a density property for fractional weighted Sobolev spaces. That is, we prove that any function in a fractional weighted Sobolev space can be approximated by a smooth function with compact support. The additional difficulty in this nonlocal setting is caused by the fact that the weights are not necessarily translation invariant.
A phase field approach for optimal boundary control of damage processes in two-dimensional viscoelastic media
Creators: name: Farshbaf Shaker, Mohammad Hassan
name: Heinemann, Christian
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: damage processes
subject: phase field model
subject: viscoelasticity
subject: nonlinear parabolic inclusions
subject: well-posedness
subject: optimal control
subject: 35Q74
subject: 49J20
subject: 35A01
subject: 35A02
subject: 35D35
subject: 35M33
subject: 35M87
subject: 74A45
subject: 74D10
subject: 74F99
subject: 74H20
subject: 74H25
subject: 74P99

description: In this work we investigate a phase field model for damage processes in two-dimensional viscoelastic media with nonhomogeneous Neumann data describing external boundary forces. In the first part we establish global-in-time existence, uniqueness, a priori estimates and continuous dependence of strong solutions on the data. The main difficulty is caused by the irreversibility of the phase field variable which results in a constrained PDE system. In the last part we consider an optimal control problem where a cost functional penalizes maximal deviations from prescribed damage profiles. The goal is to minimize the cost functional with respect to exterior forces acting on the boundary which play the role of the control variable in the considered model. To this end, we prove existence of minimizers and study a family of "local'' approximations via adapted cost functionals.
Interpolation inequalities in pattern formation
Creators: name: Cinti, Eleonora
name: Otto, Felix
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: Interpolation inequalities
subject: optimal transport
subject: pattern formation
subject: 49J40
subject: 47J20

description: We prove some interpolation inequalities which arise in the analysis of pattern formation in physics. They are the strong version of some already known estimates in weak form that are used to give a lower bound of the energy in many contexts (coarsening and branching in micromagnetics and superconductors). The main ingredient in the proof of our inequalities is a geometric construction which was first used by Choksi, Conti, Kohn, and one of the authors in citeCCKO in the study of branching in superconductors.
Additional file 1: of Association between breakfast frequency and physical activity and sedentary time: a cross-sectional study in children from 12 countries
Creators: name: Zakrzewski-Fruer, Julia
name: Gillison, Fiona
name: Katzmarzyk, Peter
name: Mire, Emily
name: Broyles, Stephanie
name: Champagne, Catherine
name: Chaput, Jean-Philippe
name: Denstel, Kara
name: Fogelholm, Mikael
name: Hu, Gang
name: Lambert, Estelle
name: Maher, Carol
name: Maia, JosĂŠ
name: Olds, Tim
name: Onywera, Vincent
name: Sarmiento, Olga
name: Tremblay, Mark
name: Tudor-Locke, Catrine
name: Standage, Martyn
Publisher: name: figshare
Year: 2019
Subjects: subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Table S1. Associations of breakfast frequency defined using two categories with physical activity and sedentary time in children from 12 countries.â Table showing associations of breakfast frequency defined using two categories with physical activity and sedentary time in children from 12 countries. (DOC 121 kb)
Pion-nucleus reactions in a microscopic transport model
Creators: name: Engel, A.
name: Cassing, W.
name: Mosel, U.
name: Schäfer, M.
name: Wolf, Gy.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyse pion-nucleus reactions in a microscopic transport model of the BUU type, which propagates nucleons, pions, deltas and N(1440)-resonances explicitly in space and time. In particular we examine pion absorption and inelastic scattering cross sections for pion kinetic energies T(pi) =85-315MeV and various target masses. In general, the mass-dependence of the experimental data is well described for energies up to the delta-resonance (\approx 160 MeV) while the absorption cross sections are somewhat overestimated for the higher energies. In addition we study the possible dynamical effects of delta- and pion-potentials in the medium on various observables as well as alternative models for the in-medium delta-width.
description: 31 pages, UGI-93-04
Microstructural evolution and metastability in active materials
Creators: name: Kinderlehrer, David
Publisher: name: Carnegie Mellon University
Year: 1998
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Abstract: "Metastable systems pose significant problems in both analysis and simulation. We discuss here the evolution of microstructure in a shape-memory alloy where energetic contributions from disparate scales play determining roles. This is a challenge for modelling since the finest length scales cannot be 'seen' at macroscopic level. We then provide a mechanism for kinetics that gives a different notion [sic] metastability."
Extension of Frohlich's method to 4-fermion interactions
Creators: name: Tarasewicz, Przemyslaw
name: Baran, Dominik
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Higher order terms of the transformed electron-phonon Hamiltonian, obtained by performing the Frohlich's transformation, are investigated. The influence of terms discarded by Frohlich (in particular those proportional to the third power of electron-phonon coupling) on the effective Hamiltonian is examined. To this end a second Frohlich-type transformation is performed, which yields, among others, an effective 4-electron interaction. This interaction is reduced to a form admitting solution of thermodynamics. The form of the coupling of the 4-electron interaction is found. By applying standard approximations, it is shown that this interaction is attractive with interaction coupling given by - D_{k_F}^6 / ω_{k_F}^5, where D_{k} is electron-phonon coupling, ω_{k}$ is phonon energy and k_F is Fermi momentum. The form of higher order terms of the original Frohlich-transformed H_{e-ph} are also found, up to terms proportional to the 6-th power of the coupling, that is up to those, which yield the effective 4-electron interactions.
description: REVTeX4, 25 pages; major changes: added section and appendix about the form of 4-fermion interaction coupling, typos corrected
Solutions of the fractional Allen--Cahn equation which are invariant under screw motion
Creators: name: Cinti, Eleonora
name: Davila, Juan
name: Del Pino, Manuel
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: Fractional Laplacian
subject: entire solutions
subject: nonlocal perimeter
subject: 35J61
subject: 35J20
subject: 35B08
subject: 47J30

description: We establish existence and non-existence results for entire solutions to the fractional Allen--Cahn equation in R3 , which vanish on helicoids and are invariant under screw-motion. In addition, we prove that helicoids are surfaces with vanishing nonlocal mean curvature.
Realization of the N(odd)-dimensional Quantum Euclidean Space by Differential Operators
Creators: name: Li, Yun
name: Jing, Sicong
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The quantum Euclidean space R_{q}^{N} is a kind of noncommutative space which is obtained from ordinary Euclidean space R^{N} by deformation with parameter q. When N is odd, the structure of this space is similar to R_{q}^{3}. Motivated by realization of R_{q}^{3} by differential operators in R^{3}, we give such realization for R_{q}^{5} and R_{q}^{7} cases and generalize our results to R_{q}^{N} (N odd) in this paper, that is, we show that the algebra of R_{q}^{N} can be realized by differential operators acting on C^{infinite} functions on undeformed space R^{N}.
description: 10 pages, LaTex
Block-diagonal idiosyncratic covariance estimation in high-dimensional factor models for financial time series
Creators: name: Žignić, Lucija
name: Begušić, Stjepan
name: Kostanjčar, Zvonko
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Mathematical Finance (q-fin.MF)
subject: Methodology (stat.ME)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: Estimation of high-dimensional covariance matrices in latent factor models is an important topic in many fields and especially in finance. Since the number of financial assets grows while the estimation window length remains of limited size, the often used sample estimator yields noisy estimates which are not even positive definite. Under the assumption of latent factor models, the covariance matrix is decomposed into a common low-rank component and a full-rank idiosyncratic component. In this paper we focus on the estimation of the idiosyncratic component, under the assumption of a grouped structure of the time series, which may arise due to specific factors such as industries, asset classes or countries. We propose a generalized methodology for estimation of the block-diagonal idiosyncratic component by clustering the residual series and applying shrinkage to the obtained blocks in order to ensure positive definiteness. We derive two different estimators based on different clustering methods and test their performance using simulation and historical data. The proposed methods are shown to provide reliable estimates and outperform other state-of-the-art estimators based on thresholding methods.
Valence, exchange interaction, and location of Mn in polycrystalline Mn(x)Ga(1-x)N (x<0.04)
Creators: name: Furrer, A.
name: Kraemer, K. W.
name: Podlesnyak, A.
name: Pomjakushin, V.
name: Sheptyakov, D.
name: Safonova, O. V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an experimental study for polycrystalline samples of the diluted magnetic semiconductor Mn(x)Ga(1-x)N (x<0.04) in order to address some of the existing controversial issues. Different techniques were used to characterize the electronic, magnetic, and structural properties of the samples, and inelastic neutron scattering was employed to determine the magnetic excitations associated with Mn monomers and dimers. Our main conclusions are as follows: (i) The valence of the Mn ions is 2+. (ii) The Mn(2+) ions experience a substantial single-ion axial anisotropy with parameter D=0.027(3) meV. (iii) Nearest-neighbor Mn(2+) ions are coupled antiferromagnetically. The exchange parameter J= 0.140(7) meV is independent of the Mn content x, i.e., there is no evidence for hole-induced modifications of J towards a potentially high Curie temperature postulated in the literature.
description: 19 pages, 1 table, 4 figures
A time domain sampling method for inverse acoustic scattering problems
Creators: name: Guo, Yukun
name: Hömberg, Dietmar
name: Hu, Guanghui
name: Li, Jingzhi
name: Liu, Hongyu
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: inverse acoustic scattering
subject: sampling method
subject: time domain
subject: dynamic measurements
subject: Kirschhoff migration
subject: 74J20
subject: 74J25
subject: 35R30

description: This work concerns the inverse scattering problems of imaging unknown/inaccessible scatterers by transient acoustic near-field measurements. Based on the analysis of the migration method, we propose efficient and effective sampling schemes for imaging small and extended scatterers from knowledge of time-dependent scattered data due to incident impulsive point sources. Though the inverse scattering problems are known to be nonlinear and ill-posed, the proposed imaging algorithms are totally ``direct'' involving only integral calculations on the measurement surface. Theoretical justifications are presented and numerical experiments are conducted to demonstrate the effectiveness and robustness of our methods. In particular, the proposed static imaging functionals enhance the performance of the total focusing method (TFM) and the dynamic imaging functionals show analogous behavior to the time reversal inversion but without solving time-dependent wave equations.
Nereid Has Complex Large-Amplitude Photometric Variability (Due to Chaotic Rotation)
Creators: name: Schaefer, Bradley E.
name: Schaefer, Martha W.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on 224 photometric measurements of Nereid, a small outer satellite of Neptune. Our photometry covers 64 nights from 1987 to 1997 and is primarily in the V-band; we also have 20 measurements in the U, B, R, and I bands. (1) Nereid displays large-amplitude brightness variations with a total amplitude of 1.83 mag on time scales ranging from a few hours to roughly a year. (2) The amplitude as well as the time scale of variation changes greatly from year to year. (3) Nereid's variability is caused by high contrast albedo features along with rotational modulation. (4) The changing amplitudes and time scales demonstrate that the direction and magnitude of Nereid's rotational angular momentum vector is not constant. (5) Such changes are predicted to arise from chaotic rotation during every periapse passage provided that Nereid is more than about 1% nonspherical and is spinning slowly. The match between prediction and observation could be taken as strong evidence for chaotic rotation of Nereid. However, the intranight variability cannot be readily explained by chaotic rotation. (6) The colors of Nereid are U-V=0.84+-0.05, B-V=0.71+-0.04, V-R=0.44+-0.03, V-I=0.72+-0.05, and V-K=1.6. (7) Nereid is likely either an inner moon of Neptune kicked to its current orbit or a captured Kuiper Belt Object or centaur, with the latter possibility being strongly preferred.
description: Icarus, in press. 20 pages, 9 figures
Self-consistent solution of the Schwinger-Dyson equations for the nucleon and meson propagators
Creators: name: Bracco, M. E.
name: Eiras, A.
name: Krein, G.
name: Wilets, L.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Schwinger-Dyson equations for the nucleon and meson propagators are solved self-consistently in an approximation that goes beyond the Hartree-Fock approximation. The traditional approach consists in solving the nucleon Schwinger-Dyson equation with bare meson propagators and bare meson-nucleon vertices; the corrections to the meson propagators are calculated using the bare nucleon propagator and bare nucleon-meson vertices. It is known that such an approximation scheme produces the appearance of ghost poles in the propagators. In this paper the coupled system of Schwinger-Dyson equations for the nucleon and the meson propagators are solved self-consistently including vertex corrections. The interplay of self-consistency and vertex corrections on the ghosts problem is investigated. It is found that the self-consistency does not affect significantly the spectral properties of the propagators. In particular, it does not affect the appearance of the ghost poles in the propagators.
description: REVTEX, 7 figures (available upon request), IFT-P.037/93, DOE/ER/40427-12-N93
Effect of chromatic dispersion on multimode laser dynamics: Delay differential model
Creators: name: Vladimirov, Andrei G.
name: Huyet, Guillaume
name: Pimenov, Alexander
Publisher: name: Weierstrass Institute
Year: 2016
Subjects: subject: Laser dynamics
subject: delay differential model
subject: chromatic dispersion
subject: 42.55.Ah
subject: 42.60.Mi
subject: 42.60.Pk
subject: 42.65.Sf

description: A set of differential equations with distributed delay is derived for modeling of multimode ring lasers with intracavity chromatic dispersion. Analytical stability analysis of continuous wave regimes is performed and it is demonstrated that sufficiently strong anomalous dispersion can destabilize these regimes.
Additional file 2 of Insight into the ecology of vaginal bacteria through integrative analyses of metagenomic and metatranscriptomic data
Creators: name: France, Michael
 T.
name: Fu, Li
name: Rutt, Lindsay
name: Yang, Hongqiu
name: Humphrys, Michael S.
name: Narina, Shilpa
name: Gajer, Pawel M.
name: Ma, Bing
name: Forney, Larry J.
name: Ravel, Jacques
Publisher: name: figshare
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2: Supplementary Figure 1. Linear relationship of the log10 relative expression of each taxon in relation to its log10 relative abundance. Vertical gray lines represent the X intercept of the fit, representing the relative abundance at which each taxon transitions from over- to under-expressive. Supplementary Figure 2. Scatter plot of correlated canonical variables identified in the analysis of L. crispatus (a) L. iners (b) and Gardnerella (c) gene expression. Supplemental Figure 3. Scatter plot of correlated canonical variables identified in the analysis of L. crispatus (a) L. iners (b) and Gardnerella (c) gene expression.
title: Investigation of gene Expression in C2C12 Myotubes Following simvastatin Application and Mechanical Strain
Creators: name: Yu, JG
name: Sewright, K
name: Hubal, MJ
name: Liu, JX
name: Schwartz, LM
name: Hoffman, EP
name: Clarkson, PM
Publisher: name: University of Massachusetts Amherst
Year: 2009
Subjects: subject: Statin
subject: C2C12 cells
subject: Microarray analysis
subject: Mechanical strain
subject: Myopathy
subject: Biology

description: Abstract Aim: The 3-hydroxy-3methylgutaryl coenzyme A (HMG-CoA) reductase inhibitors (statins) are the most effective prescribed drugs for lowering serum cholesterol; however, although statins are extremely safe medications and have brought significant benefits to patients with hypercholesterolemia, they have been shown to produce myalgia, cramps, exercise intolerance and fatigue. The aim of the study was to investigate the molecular mechanisms that may mediate statin myopathy. Methods: We used DNA microarray analysis to examine the changes in gene expression profiles induced by 1 hour and 6 hours of statin treatment on differentiated C2C12 myotubes. Four genes were selected for analysis at the protein level using Western blot analysis on myotubes treated with statin with or without additional mechanical stretching. Results: Eighty-five genes exhibited more than a 2-fold up- or down-regulation in expression, of which 46 have known biological functions related primarily to transmembrane transport, signal transduction, cell growth/maintenance, protein metabolism, or apoptosis. At protein level, three of the four proteins were induced (Adrb1, Socs4 and Cflar) and one was repressed (Birc4). Changes in protein expression largely mirrored the changes in their corresponding transcripts, although the fold-change was less dramatic. The addition of imposed muscle fiber stretching did not exacerbate the expression of these genes at the protein level with the exception of Cflar, a pro-apoptotic protein. Conclusion: These data suggested that alterations in the expressions of some statin-regulated genes could be causative factors for statin toxicity in muscle. Repression of the anti-apoptosis gene (Birc4) and activation of the pro-apoptosis gene (Cflar) indicated that cell death may play an important role in statin-induced myopathy.
ВНУТРЕННИЙ АУДИТ В РОССИИ: СУЩНОСТЬ И ПЕРСПЕКТИВЫ РАЗВИТИЯ
Creators: name: ЮНУСОВА Д.А.
Publisher: name: УЭПС: управление, экономика, политика, социология
Year: 2018
Subjects: ВНУТРЕННИЙ АУДИТ
ЭФФЕКТИВНОСТЬ БИЗНЕСА
АУДИТОРСКИЕ ГАРАНТИИ И КОНСУЛЬТАЦИИ
INTERNAL AUDIT
BUSINESS EFFICIENCY
AUDIT GUARANTEES AND CONSULTATIONS

description: Данная статья посвящена рассмотрению сущности и целей внутреннего аудита, как важнейшего элемента корпоративного управления. Раскрыты основные характеристики внутреннего аудита и формы его организации в различных компаниях. Отмечены тренды и перспективы развития внутреннего аудита в России
title: My tale of the swamp hen and the owl
title: Mon conte de la poule sultane et de la chouette
titleType: AlternativeTitle
title: Kijila-ny i axaleny shaak ma mwen
titleType: AlternativeTitle
Creators: name: Bril, Isabelle
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Nêlêmwa
subject: nee

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
description: Conte pour enfant.
Topological surface Fermi arcs in the magnetic Weyl semimetal Co$_3$Sn$_2$S$_2$
Creators: name: Xu, Qiunan
name: Liu, Enke
name: Shi, Wujun
name: Muechler, Lukas
name: Gayles, Jacob
name: Felser, Claudia
name: Sun, Yan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Very recently, the half-metallic compound Co$_3$Sn$_2$S$_2$ was predicted to be a magnetic WSM with Weyl points only 60 meV above the Fermi level ($E_F$). Owing to the low charge carrier density and large Berry curvature induced,Co$_3$Sn$_2$S$_2$ possesses both a large anomalous Hall conductivity (AHC) and a large anomalous Hall angle (AHA), which provide strong evidence for the existence of Weyl points in Co$_3$Sn$_2$S$_2$. In this work, we theoretically studied the surface topological feature of Co$_3$Sn$_2$S$_2$ and its counterpart Co$_3$Sn$_2$Se$_2$. By cleaving the sample at the weak Sn--S/Se bonds, one can achieve two different surfaces terminated with Sn and S/Se atoms, respectively. The resulting Fermi arc related states can range from the energy of the Weyl points to $E_F$--0.1 eV in the Sn-terminated surface. Therefore, it should be possible to observe the Fermi arcs in angle-resolved photoemission spectroscopy (ARPES) measurements. Furthermore, in order to simulate quasiparticle interference (QPI) in scanning tunneling microscopy (STM) measurements, we also calculated the joint density of states (JDOS) for both terminals. This work would be helpful for a comprehensive understanding of the topological properties of these two magnetic WSMs and further ARPES and STM measurements.