cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Population-expression models of immune response
Creators: name: Stromberg, Sean P
name: Antia, Rustom
name: Nemenman, Ilya
Publisher: name: arXiv
Year: 2012
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: The immune response to a pathogen has two basic features. The first is the expansion of a few pathogen-specific cells to form a population large enough to control the pathogen. The second is the process of differentiation of cells from an initial naive phenotype to an effector phenotype which controls the pathogen, and subsequently to a memory phenotype that is maintained and responsible for long-term protection. The expansion and the differentiation have been considered largely independently. Changes in cell populations are typically described using ecologically based ordinary differential equation models. In contrast, differentiation of single cells is studied within systems biology and is frequently modeled by considering changes in gene and protein expression in individual cells. Recent advances in experimental systems biology make available for the first time data to allow the coupling of population and high dimensional expression data of immune cells during infections. Here we describe and develop population-expression models which integrate these two processes into systems biology on the multicellular level. When translated into mathematical equations, these models result in non-conservative, non-local advection-diffusion equations. We describe situations where the population-expression approach can make correct inference from data while previous modeling approaches based on common simplifying assumptions would fail. We also explore how model reduction techniques can be used to build population-expression models, minimizing the complexity of the model while keeping the essential features of the system. While we consider problems in immunology in this paper, we expect population-expression models to be more broadly applicable.
description: Revised manuscript with an additional included Supplemental. The Supplemental contains two contrasting derivations of the population-expression PDE formulation, one from a fluid-dynamics perspective using the divergence theorem, the other from a statistical physics/systems-biology perspective using a chemical master equation
Keldysh approach for non-equilibrium phase transitions in quantum optics: beyond the Dicke model in optical cavities
Creators: name: Torre, Emanuele G. Dalla
name: Diehl, Sebastian
name: Lukin, Mikhail D.
name: Sachdev, Subir
name: Strack, Philipp
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate non-equilibrium phase transitions for driven atomic ensembles, interacting with a cavity mode, coupled to a Markovian dissipative bath. In the thermodynamic limit and at low-frequencies, we show that the distribution function of the photonic mode is thermal, with an effective temperature set by the atom-photon interaction strength. This behavior characterizes the static and dynamic critical exponents of the associated superradiance transition. Motivated by these considerations, we develop a general Keldysh path integral approach, that allows us to study physically relevant nonlinearities beyond the idealized Dicke model. Using standard diagrammatic techniques, we take into account the leading-order corrections due to the finite number of atoms N. For finite N, the photon mode behaves as a damped, classical non-linear oscillator at finite temperature. For the atoms, we propose a Dicke action that can be solved for any N and correctly captures the atoms' depolarization due to dissipative dephasing.
description: 20 pages, 9 figures. Extended discussion of 1/N corrections
Detecting Historical Terrain Anomalies With UAV-LiDAR Data Using Spline-Approximation and Support Vector Machines
Creators: name: Storch, Marcel
name: De Lange, Norbert
name: Jarmer, Thomas
name: Waske, Björn
Publisher: name: Universität Osnabrück
Year: 2023
Subjects: subject: Historical terrain anomalies
subject: machine learning
subject: splines
subject: UAV-LiDAR
subject: Vegetation mapping
subject: Remote sensing
subject: Cultural differences
subject: Support vector machines
subject: Laser radar
subject: Filtering algorithms
subject: 004 - Informatik
subject: 550 - Geowissenschaften

description: The documentation of historical remains and cultural heritage is of great importance to preserve historical knowledge. Many studies use low-resolution airplane-based laser scanning and manual interpretation for this purpose. In this study, a concept to automatically detect terrain anomalies in a historical conflict landscape using high-resolution UAV-LiDAR data was developed. We applied different ground filter algorithms and included a spline-based approximation step in order to improve the removal of low vegetation. Due to the absence of comprehensive labeled training data, a one-class support vector machine algorithm was used in an unsupervised manner in order to automatically detect the terrain anomalies. We applied our approach in a study site with different densities of low vegetation. The morphological ground filter was the most suitable when dense near-ground vegetation is present. However, with the use of the spline-based processing step, all filters used could be significantly improved in terms of the F1-score of the classification results. It increased by up to 42% points in the area with dense low vegetation and by up to 14% points in the area with sparse low vegetation. The completeness (recall) reached maximum values of 0.8 and 1.0, respectively, when taking into account the results leading to the highest F1-score for each filter. Therefore, our concept can support on-site field prospection.
„In Würde sterben
Creators: name: Schweizer, Dorothea
Publisher: name: DWI-Jahrbuch – Diakoniewissenschaft in Forschung und Lehre
Year: 2019

description: DWI-Jahrbuch – Diakoniewissenschaft in Forschung und Lehre, Bd. 46: (2018/2019): Diakoniewissenschaft in Forschung und Lehre
Modelling grand minima of solar activity using a flux transport dynamo model
Creators: name: Karak, Bidya Binay
name: Choudhuri, Arnab Rai
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The occurrence of grand minima like the Maunder minimum is an intriguing aspect of the sunspot cycle. We use the flux transport dynamo model to explain the grand minima, showing that they arise when either the poloidal field or the meridional circulation falls to a sufficiently low value due to fluctuations. Assuming these fluctuations to be Gaussian and determining the various parameters from the data of the last 28 cycles, we carry on a dynamo simulation with both these fluctuations. The results are remarkably close to the observational data.
description: IAU Symposium 294: Solar and Astrophysical Dynamos and Magnetic Activity. Editors: A.G. Kosovichev, E.M. de Gouveia Dal Pino, & Y.Yan
J. Dülffer, M. Kröger, R. H. Wippich, Vermiedene Kriege. Deeskalation von Konflikten der Großmächte zwischen Krimkrieg und Erstem Weltkrieg (1856–1914), 1997
Creators: name: Maks, H.
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 26 Nr. 3 (1999)
Y. Breton, A. Broder, M. Lutfalla (Hg.), La longue stagnation en France. L'autre grande dépression en France 1873–1897, 1997
Creators: name: Soleymani, D.
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 26 Nr. 3 (1999)
Stability and Convergence of Product Formulas for Operator Matrices
Creators: name: Bátkai, András
name: Csomós, Petra
name: Engel, Klaus-Jochen
name: Farkas, Bálint
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 47D06, 47N40, 65J10, 34K06

description: We present easy to verify conditions implying stability estimates for operator matrix splittings which ensure convergence of the associated Trotter, Strang and weighted product formulas. The results are applied to inhomogeneous abstract Cauchy problems and to boundary feedback systems.
description: to appear in Integral Equations and Operator Theory (ISSN: 1420-8989)
S. M. Lowenstein, P. Mendes-Flohr, P. Pulzer, M. Richarz, Deutsch-jüdische Geschichte in der Neuzeit. Band III: Umstrittene Integration 1871–1918, 1997
Creators: name: Thalmann, R.
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 26 Nr. 3 (1999)
Crop wild relatives and genetic resources for food security
Creators: name: Chala, Desalegn
name: Kusch, Erik
name: Endresen, Dag
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Crop wild relatives

description: Challenges to food security in the 21st century: drastic population growth requiring higher yields environmental stresses testing the resilience of crops homogenisation of domesticated crops limiting their gene pool and adaptability. Novel genetic resources to tackle these challenges are found in crop wild relatives (CWR) - wild plants withing the same genus as a crop by broad definition.- These comprise about 21% of the world flora. Objective: Developing a digital twin prototype to unlock CWR resources and investigate their roles in supporting food security. Modelling tools Modelling the Distribution of Germplasm of Interest (MoDGP) Focused Identification of Germplasm Strategy (FIGS) The poster was first presented at the BioDT Annual Meeting 2023, 13-14 June in Leiden, Netherlands. Learn more
Accelerating Iterative Detection for Spatially Coupled Systems by Collaborative Training
Creators: name: Takeuchi, Keigo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This letter proposes a novel method for accelerating iterative detection for spatially coupled (SC) systems. An SC system is constructed by one-dimensional coupling of many subsystems, which are classified into training and propagation parts. An irregular structure is introduced into the subsystems in the training part so that information in that part can be detected successfully. The obtained reliable information may spread over the whole system via the subsystems in the propagation part. In order to allow the subsystems in the training part to collaborate, shortcuts between them are created to accelerate iterative detection for that part. As an example of SC systems, SC code-division multiple-access (CDMA) systems are considered. Density Evolution for the SC CDMA systems shows that the proposed method can provide a significant reduction in the number of iterations for highly loaded systems.
description: accepted for publication on IEEE Commun. Lett
Dissipationless Spin Current between Two Coupled Ferromagnets
Creators: name: Chen, Wei
name: Horsch, Peter
name: Manske, Dirk
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate the general principle which states that a dissipationless spin current flows between two coupled ferromagnets if their magnetic orders are misaligned. This principle applies regardless the two ferromagnets are metallic or insulating, and also generally applies to bulk magnetic insulators. On a phenomenological level, this principle is analogous to Josephson effect, and yields a dissipationless spin current that is independent from scattering. The microscopic mechanisms for the dissipationless spin current depend on the systems, which are elaborated in details. A uniform, static magnetic field is further proposed to be an efficient handle to create the misaligned configuration and stabilize the dissipationless spin current.
description: 10 pages, 5 figures
Possibility of a minimal purity-measurement scheme critically depends on the parity of dimension of the quantum system
Creators: name: Tanaka, Toru
name: Kimura, Gen
name: Nakazato, Hiromichi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate the possibility of measuring the purity of a quantum state (and the overlap between two quantum states) within a minimal model where the measurement device is minimally composed. The minimality is based on the assumptions that (i) we use a yes-no measurement on a single system to determine the single value of the purity in order not to extract other redundant information, and (ii) we use neither ancilla nor random measurement. We show that the measurability of the purity within this model critically depends on the parity of dimension of the quantum system: the purity measurement is possible for odd dimensional quantum systems, while it is impossible for even dimensional cases.
description: 9pages, 1figure
Hadron physics potential of future high-luminosity B-factories at the Upsilon(5S) and above
Creators: name: Drutskoy, A. G.
name: Guo, Feng-Kun
name: Llanes-Estrada, Felipe J.
name: Nefediev, A. V.
name: Torres-Rincon, Juan M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We point out the physics opportunities of future high-luminosity B-factories at the Upsilon(5S) resonance and above. In this paper we discuss numerous interesting investigations, which can be performed in the e+e- centre-of-mass energy region from the Upsilon(5S) and up to 11.5 GeV, where an efficient data taking operation should be possible with the planned B-factories. These studies include abundant Bs production and decay properties; independent confirmation and if found, exhaustive exploration of Belle's claimed charged bottomonia; clarification of puzzles of interquarkonium dipion transitions; extraction of the light quark mass ratio from hadronic Upsilon(5S) decays; analysis of quarkonium and exotic internal structure from open flavour decays, leading to severe SU(3) symmetry violations; clarification of whether a hybrid state has similar mass to the Upsilon(5S) bottomonium, making it a double state; searches for molecular/tetraquark states that should be more stable with heavy quarks; completion of the table of positive-parity B_J mesons and study of their basic properties; production of Lambda_b\bar{Lambda}_b heavy baryon pairs, that, following weak decay, open vistas on the charmed baryon spectrum and new channels to study CP violation; confirmation or refutation of the deviation from pQCD of the pion transition form factor, by extending the Q^2 reach of current analysis; and possibly reaching the threshold for the production of triply-charmed baryons. If, in addition, the future colliders can be later upgraded to 12.5 GeV, then the possibility of copious production of B_c\bar{B}_c pairs opens, entailing new studies of CP violation and improved, independent tests of the CKM picture (through determination of V_{bc}), and of effective theories for heavy quarks.
description: LaTeX2e, 25 pages, version published in Eur.Phys.J.A
Whose World Music?
Creators: name: Noone, Matthew
Publisher: name: University of Limerick
Year: 2025
Subjects: classificationCode: 3603
subject: Music

description: World music might be defined most benignly as an attempt to conceptualise all of the world’s music. More cynically though, world music can be also seen as just an advertising label for all non-Western music. Many scholars have gone even further and argue that world music is a delusional subjective fantasy, an unreal utopia and an oppressive discourse of western hegemony. Defining what world music is really depends on who is asking the question. Whose world music is it? This paper will focus on the philosophical conundrums of ‘world music’ within the context of the current BA World Music at the Irish World Academy of Music and Dance at the University of Limerick. The paper will be framed through the following questions: what is world music; whose music is it; why should we world music and how it can be done? In this article, I will trace the shifting meanings of world music from its origins as pedagogical framework, to its use as a popular music marketing term and finally its significance as part of a post modern critique of globalisation. I will outline how students at the Irish World Academy engage with ‘world music’ both as a problematic concept but also an exercise in exploring transcultural musical relationships, particularly through practical ensemble work in five different cultural areas: popular music, Javanese gamelan, Indian Classical music, Ewe drum and dance and Turkish maqam. I will also discuss my own journey as a musician and outline how this practice has influenced both my pedagogical and theoretical framing of what it means to be a performer in the contemporary global music landscape.
On some multiplicity and mixed multiplicity formulas (Forum Math. 26(2014), 413-442)
Creators: name: Viet, Duong Quoc
name: Thanh, Truong Thi Hong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13H15 (Primary) 13A02, 13A15, 13A30, 14C17 (Secondary)

description: This paper gives the additivity and reduction formulas for mixed multiplicities of multi-graded modules $M$ and mixed multiplicities of arbitrary ideals, and establishes the recursion formulas for the sum of all the mixed multiplicities of $M.$ As an application of these formulas we get the recursion formulas for the multiplicity of multi-graded Rees modules.
Individual behavioral rules sustain the cell allocation pattern in the combs of honey bee colonies (Apis mellifera)
Creators: name: Montovan, Kathryn J.
name: Karst, Nathaniel J.
name: Jones, Laura E.
name: Seeley, Thomas D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: In the beeswax combs of honey bees, the cells of brood, pollen, and honey have a consistent spatial pattern that is sustained throughout the life of a colony. This spatial pattern is believed to emerge from simple behavioral rules that specify how the queen moves, where foragers deposit honey/pollen and how honey/pollen is consumed from cells. Prior work has shown that a set of such rules can explain the formation of the allocation pattern starting from an empty comb. We show that these rules cannot maintain the pattern once the brood start to vacate their cells, and we propose new, biologically realistic rules that better sustain the observed allocation pattern. We analyze the three resulting models by performing hundreds of simulation runs over many gestational periods and a wide range of parameter values. We develop new metrics for pattern assessment and employ them in analyzing pattern retention over each simulation run. Applied to our simulation results, these metrics show alteration of an accepted model for honey/pollen consumption based on local information can stabilize the cell allocation pattern over time. We also show that adding global information, by biasing the queen's movements towards the center of the comb, expands the parameter regime over which pattern retention occurs.
description: Accepted to Journal of Theoretical Biology
One particle spectral function and analytic continuation for many-body implementation in the EMTO method
Creators: name: Östlin, A.
name: Chioncel, L.
name: Vitos, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate one of the most common analytic continuation techniques in condensed matter physics, namely the Padé approximant. Aspects concerning its implementation in the exact muffin-tin orbitals (EMTO) method are scrutinized with special regard towards making it stable and free of artificial defects. The electronic structure calculations are performed for solid hydrogen, and the performance of the analytical continuation is assessed by monitoring the density of states constructed directly and via the Padé approximation. We discuss the difference between the \textbf{k}-integrated and \textbf{k}-resolved analytical continuations, as well as describing the use of random numbers and pole residues to analyze the approximant. It is found that the analytic properties of the approximant can be controlled by appropriate modifications, making it a robust and reliable tool for electronic structure calculations. At the end, we propose a route to perform analytical continuation for the EMTO + dynamical mean field theory (DMFT) method.
description: 20 pages, 7 figures. Revised version published in PRB
Efficient Point-to-Subspace Query in $\ell^1$ with Application to Robust Object Instance Recognition
Creators: name: Sun, Ju
name: Zhang, Yuqian
name: Wright, John
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Motivated by vision tasks such as robust face and object recognition, we consider the following general problem: given a collection of low-dimensional linear subspaces in a high-dimensional ambient (image) space, and a query point (image), efficiently determine the nearest subspace to the query in $\ell^1$ distance. In contrast to the naive exhaustive search which entails large-scale linear programs, we show that the computational burden can be cut down significantly by a simple two-stage algorithm: (1) projecting the query and data-base subspaces into lower-dimensional space by random Cauchy matrix, and solving small-scale distance evaluations (linear programs) in the projection space to locate candidate nearest; (2) with few candidates upon independent repetition of (1), getting back to the high-dimensional space and performing exhaustive search. To preserve the identity of the nearest subspace with nontrivial probability, the projection dimension typically is low-order polynomial of the subspace dimension multiplied by logarithm of number of the subspaces (Theorem 2.1). The reduced dimensionality and hence complexity renders the proposed algorithm particularly relevant to vision application such as robust face and object instance recognition that we investigate empirically.
description: Revised based on reviewers' feedback; one new experiment on synthesized data added; one section discussing the speed up added
Spin transport and tunable Gilbert damping in a single-molecule magnet junction
Creators: name: Filipovic, Milena
name: Holmqvist, Cecilia
name: Haupt, Federica
name: Belzig, Wolfgang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study time-dependent electronic and spin transport through an electronic level connected to two leads and coupled with a single-molecule magnet via exchange interaction. The molecular spin is treated as a classical variable and precesses around an external magnetic field. We derive expressions for charge and spin currents by means of the Keldysh non-equilibrium Green's functions technique in linear order with respect to the time-dependent magnetic field created by this precession. The coupling between the electronic spins and the magnetization dynamics of the molecule creates inelastic tunneling processes which contribute to the spin currents. The inelastic spin currents, in turn, generate a spin-transfer torque acting on the molecular spin. This back-action includes a contribution to the Gilbert damping and a modification of the precession frequency. The Gilbert damping coefficient can be controlled by the bias and gate voltages or via the external magnetic field and has a non-monotonic dependence on the tunneling rates.
description: 11 pages, 9 figures, final version including corrections to published article
The structure of multidimensional entanglement in multipartite systems
Creators: name: Huber, Marcus
name: de Vicente, Julio I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore the structure of multipartite quantum systems which are entangled in multiple degrees of freedom. We find necessary and sufficient conditions for the characterization of tripartite systems and necessary conditions for any number number of parties. Furthermore we develop a framework of multi-level witnesses for efficient discrimination and quantification of multidimensional entanglement that is applicable for an arbitrary number of systems and dimensions.
description: 5 pages, 2 figures
Continuum Percolation Thresholds in Two Dimensions
Creators: name: Mertens, Stephan
name: Moore, Cristopher
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Geometry (cs.CG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A wide variety of methods have been used to compute percolation thresholds. In lattice percolation, the most powerful of these methods consists of microcanonical simulations using the union-find algorithm to efficiently determine the connected clusters, and (in two dimensions) using exact values from conformal field theory for the probability, at the phase transition, that various kinds of wrapping clusters exist on the torus. We apply this approach to percolation in continuum models, finding overlaps between objects with real-valued positions and orientations. In particular, we find precise values of the percolation transition for disks, squares, rotated squares, and rotated sticks in two dimensions, and confirm that these transitions behave as conformal field theory predicts. The running time and memory use of our algorithm are essentially linear as a function of the number of objects at criticality.
description: 6 pages, 8 figures
Algebraic roots of Newtonian mechanics: correlated dynamics of particles on a unique worldline
Creators: name: Kassandrov, Vladimir V.
name: Khasanov, Ildus Sh.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the development of the old ideas of Stueckelberg-Wheeler-Feynman on the "one-electron Universe", we study the purely algebraic dynamics of the ensemble of(two kinds of) identical point-like particles. These are represented by the(real and complex conjugate) roots of a generic polynomial system of equations that implicitly defines a single "worldline". The dynamics includes events of "merging" of a pair of particles modelling the annihilation/creation processes. Correlations in the location and motion of the particles-roots relate, in particular, to the Vieta formulas. After a special choice of the inertial-like reference frame, the linear Vieta formulas guarantee that, for any worldline, the law of (non-relativistic) momentum conservation is identically satisfied. Thus, the general structure of Newtonian mechanics follows from the algebraic properties of a worldline alone. Some considerations on relativization of the scheme are presented. A simple example of, unexpectedly rich, "polynomial dynamics" is retraced in detail and illustrated via an animation(available from ancillary file enclosed)
description: 22 pages, 10 figures and 1 animation file. Reorganized, references and citations added, put in partial correspondence with the printed version
Approximating classes of functions defined by operators of differentiation or operators of generalised translation by means of algebraic polynomials
Creators: name: Berisha, Nimete Sh.
name: Berisha, Faton M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 41A35, 41A50, 42A16

description: In this paper, approximation by means of algebraic polynomials of classes of functions defined by a generalised modulus of smoothness of operators of differentiation of these functions is considered. We give structural characteristics of classes of functions defined by the order of best approximation by algebraic polynomials.
Stationary Josephson effect in a short multi-terminal junction
Creators: name: Mai, Sebastian
name: Kandelaki, Ervand
name: Volkov, Anatoly
name: Efetov, Konstantin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the dc Josephson effect and the density of states in a multiterminal structure of cross-type geometry which consists of four superconducting electrodes connected by one-dimensional normal or ferromagnetic wires. We find that the Josephson current $I_{Jz}$ has a sinusoidal dependence on the phase difference $ϕ_z$ between the superconductors in the horizontal wire with a critical current $I_c$ that can be varied by changing the phase difference $ϕ_y$ between the superconductors in the vertical wire. The period of the function $I_{Jz}(ϕ_z)$ depends on the ratio of the interface resistances $R_{Sn,z}/R_{Sn,y}$ being equal to $2π$ if this ratio is small and equal to $4π$ in the opposite limit. We also calculate the amplitudes of both the singlet and the odd-frequency triplet component in the system under consideration. The triplet component amplitude may be significantly larger than the amplitude of the singlet component.
description: 12 pages, 8 figures
Anomalous Majorana Neutrino Masses from Torsionful Quantum Gravity
Creators: name: Mavromatos, Nick E.
name: Pilaftsis, Apostolos
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The effect of quantum torsion in theories of quantum gravity is usually described by an axion-like field which couples to matter and to gravitation and radiation gauge fields. In perturbation theory, the couplings of this torsion-descent axion field are of derivative type and so preserve a shift symmetry. This shift symmetry may be broken, if the torsion-descent axion field mixes with other axions, which could be related to moduli fields in string-inspired effective theories. In particular, the shift symmetry may break explicitly via non-perturbative effects, when these axions couple to fermions via chirality changing Yukawa couplings with appropriately suppressed coefficients. We show, how in such theories an effective right-handed Majorana neutrino mass can be generated at two loops by gravitational interactions that involve global anomalies related to quantum torsion. We estimate the magnitude of the gravitationally induced Majorana mass and find that it is highly model dependent, ranging from multi-TeV to keV scale.
description: 9 pages, 1 eps figure, references added, to appear in Physical Review D
Axioms for Higher Twisted Torsion Invariants of Smooth Bundles
Creators: name: Ohrt, Christopher
Publisher: name: arXiv
Year: 2012
Subjects: subject: K-Theory and Homology (math.KT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: This paper attempts to investigate the space of various characteristic classes for smooth manifold bundles with local system on the total space inducing a finite holonomy covering. These classes are known as twisted higher torsion classes. We will give a system of axioms that we require these cohomology classes to satisfy. Higher Franz Reidemeister torsion and twisted versions of the higher Miller-Morita-Mumford classes will satisfy these axioms. We will show that the space oftwisted torsion invariants is two dimensional or one dimensional depending on the torsion degree and spanned by these two classes. The proof will greatly depend on results on the equivariant Hatcher constructions developed in a separate paper.
description: 43 pages, 2 figures
КЛИНИКО-ЭПИДЕМИОЛОГИЧЕСКИЕ АСПЕКТИ ХРОНИЧЕСКОГО БРУЦЕЛЛЕЗА
Creators: name: Фарманова, М.А.
name: Зайниддинова, М.Б.
Publisher: name: Zenodo
Year: 2023

description: Нами было проведено клиническое наблюдение 98 больных  бруцеллезной инфекцией у взрослых. Проанализировано эпидемиологические особенности заболевания, клиническое течение и результаты полученные при диагностике. Результаты показали, что 68(69%) случаев хронического бруцеллеза регистрировалось у мужчин в возрасте 18-30 лет, причем заболеваемость была в 2 раза выше среди мужчин, чем среди женщин.
Charge Renormalization due to Graviton Loops
Creators: name: Narain, Gaurav
name: Anishetty, Ramesh
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The leading term in the gauge coupling beta function comes due to interaction of gauge field with gravitons. It is shown to be a universal quantity for all gauge theories. At one-loop it is found to be zero in four dimensions. This is independent of the gravity action with metric as the field variable, gauge fixing condition and regularization scheme. This term being universally same for all gauge groups is further studied in the case of abelian gauge theories, where due to self-duality this term is shown to be zero to all loops, on-shell. Consequences of this are discussed.
description: 1+10 pages, 1 figure, Published in JHEP
Intrinsic and substrate induced spin-orbit interaction in chirally stacked trilayer graphene
Creators: name: Kormanyos, Andor
name: Burkard, Guido
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a combined group-theoretical and tight-binding approach to calculate the intrinsic spin-orbit coupling (SOC) in ABC stacked trilayer graphene. We find that compared to monolayer graphene, a larger set of d orbitals (in particular the d_{z^2} orbital) needs to be taken into account. We also consider the intrinsic SOC in bilayer graphene, because the comparison between our tight-binding bilayer results and the density functional computations of Ref.[40] allows us to estimate the values of the trilayer SOC parameters as well. We also discuss the situation when a substrate or adatoms induce strong SOC in only one of the layers of bilayer or ABC trilayer graphene. Both for the case of intrinsic and externally induced SOC we derive effective Hamiltonians which describe the low-energy spin-orbit physics. We find that at the K point of the Brillouin zone the effect of Bychkov-Rashba type SOC is suppressed in bilayer and ABC trilayer graphene compared to monolayer graphene.
description: few typos corrected, a new figure added
E. Kleinau, C. Opitz (Hg.) Geschichte der Mädchen- und Frauenbildung. Bd. 1: Vom Mittelalter bis zur Aufklärung, 1996
Creators: name: Le Cam, Jean-Luc
Publisher: name: Francia
Year: 2019

description: E. Kleinau, C. Opitz (Hg.) Geschichte der Mädchen- und Frauenbildung. Bd. 1: Vom Mittelalter bis zur Aufklärung, 1996 (J.-L. Le Cam)
description: Francia, Bd. 30 Nr. 2 (2003)
A fresh look into m_{c,b} and precise f_{D_(s),B_(s)} from heavy-light QCD spectral sum rules
Creators: name: Narison, Stephan
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Using recent values of the QCD (non-) perturbative parameters given in Table 1 and an estimate of the N3LO QCD perturbative contributions based on the geometric growth of the PT series, we re-use QCD spectral sum rules (QSSR) known to N2LO PT series and including all dimension-six NP condensate contributions in the full QCD theory, for improving the existing estimates of {m}_{c,b} and f_{D_(s)}, f_{B_(s)} from the open charm and beauty systems. We especially study the effects of the subtraction point on "different QSSR data" and use (for the first time) the Renormalization Group Invariant (RGI) scale independent quark masses in the analysis. The estimates [rigourous model-independent upper bounds within the SVZ framework] reported in Table 8: f_D/f_π=1.56(5)[< 1.68(1)], f_B/f_π=1.58(5)[< 1.80(3)] and f_{D_s}/f_K= 1.58(4) [< 1.63(1)], f_{B_s}/f_K=1.50(3)[< 1.61(3.5)], which improve previous QSSR estimates, are in perfect agreement (in values and precisions) with some of the experimental data on f_{D,D_s} and on recent lattice simulations within dynamical quarks. These remarkable agreements confirm both the success of the QSSR semi-approximate approach based on the OPE in terms of the quark and gluon condensates and of the Minimal Duality Ansatz (MDA) for parametrizing the hadronic spectral function which we have tested from the complete data of the J/ψand Υsystems. The values of the running quark masses m_c(m_c)=1286(66) MeV and m_b(m_b)= 4236(69) MeV from M_{D,B} are in good agreement though less accurate than the ones from recent J/ψand Υsum rules.
description: 14 pages, 20 figures, 8 tables: partly presented at the 16th QCD international conference (QCD 12), Montpellier, 2-6th july 2012; version which matches with the one to appear in PLB
J. Le Boindre, Débats du Parlement de Paris pendant la Minorité de Louis XIV, t. II. Textes établis et présentés par I. Storez-Brancourt, 2002
Creators: name: Imhoff, Andreas
Publisher: name: Francia
Year: 2019

description: J. Le Boindre, Débats du Parlement de Paris pendant la Minorité de Louis XIV, t. II. Textes établis et présentés par I. Storez-Brancourt, 2002 (A. Imhoff)
description: Francia, Bd. 30 Nr. 2 (2003)
Weitere Informationen zum Thema Lesesozialisation von Mädchen
Creators: name: Querelles-Net, Redaktion
Publisher: name: querelles-net
Year: 2003
Subjects: Jugend; Literatur; Bildung; Geschlecht; Gender

description: Weitere Informationen zum Thema Lesesozialisation von Mädchen
description: querelles-net, Nr. 10 (2003): Kindheit und Jugend
The plasmonic eigenvalue problem
Creators: name: Grieser, Daniel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 78A99, 35Pxx, 31A05

description: A plasmon of a bounded domain $Ω\subset\mathbb{R}^n$ is a non-trivial bounded harmonic function on $\mathbb{R}^n\setminus\partialΩ$ which is continuous at $\partialΩ$ and whose exterior and interior normal derivatives at $\partialΩ$ have a constant ratio. We call this ratio a plasmonic eigenvalue of $Ω$. Plasmons arise in the description of electromagnetic waves hitting a metallic particle $Ω$. We investigate these eigenvalues and prove that they form a sequence of numbers converging to one. Also, we prove regularity of plasmons, derive a variational characterization, and prove a second order perturbation formula. The problem can be reformulated in terms of Dirichlet-Neumann operators, and as a side result we derive a formula for the shape derivative of these operators.
description: 22 pages; replacement 8-March-14: minor corrections; to appear in Review in Mathematical Physics
The Long-Lived UV "Plateau" of SN 2012aw
Creators: name: Bayless, Amanda J.
name: Pritchard, Tyler
name: Roming, Peter W. A.
name: Kuin, Paul
name: Brown, Peter J.
name: Botticella, Maria Teresa
name: Dall'Ora, Massimo
name: Frey, Lucille H.
name: Even, Wesley
name: Fryer, Chris L.
name: Maund, Justyn R.
name: Fraser, Morgan
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Observations with the Swift UVOT have unambiguously uncovered for the first time a long-lived, UV "plateau" in a Type II-P supernova (SN). Although this flattening in slope is hinted at in a few other SNe, due to its proximity and minimal line-of-sight extinction, SN 2012aw has afforded the first opportunity to clearly observe this UV plateau. The observations of SN 2012aw revealed all Swift UV and u-band lightcurves initially declined rapidly, but 27 days after explosion the light curves flattened. Some possible sources of the UV plateau are: the same thermal process that cause the optical plateau, heating from radioactive decay, or a combination of both processes.
description: In press at ApJL. 5 pages. 4 color figures
The U(1) symmetry of the non-tribimaximal pattern in the degenerate mass spectrum case of the neutrino mass matrix
Creators: name: Lashin, E. I.
name: Chamoun, N.
name: Nasri, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: On account of the new neutrino oscillation data signalling a non-zero value for the smallest mixing angle ($θ_z$), we present an explicit realization of the underlying U(1) symmetry characterizing the maximal atmospheric mixing angle ($θ_y = π/ 4$) pattern with two degenerate masses but now with generic values of $θ_z$. We study the effects of the form invariance with respect to U(1), and/or $Z_3$, $Z_2$ subgroups, on the Yukawa couplings and the mass terms. Later on, we specify $θ_z$ to its experimental best fit value ($ \sim 8^o$), and impose the symmetry in an entire model which includes charged leptons, and many Higgs doublets or standard model singlet heavy scalars, to show that it can make room for the charged lepton mass hierarchies. In addition, we show for the non-tribimaximal value of $θ_z \neq 0$ within type-I seesaw mechanism enhanced with flavor symmetry that neutrino mass hierarchies can be generated. Furthermore, lepton/baryogenesis can be interpreted via type-II seesaw mechanism within a setup meeting the flavor U(1)-symmetry.
description: latex, 1 table, 20 pages. Typos are corrected, shortened version to appear in Phys. Rev. D
High-Tc Nodeless s_\pm-wave Superconductivity in (Y,La)FeAsO_{1-y} with Tc=50 K: 75As-NMR Study
Creators: name: Mukuda, H.
name: Furukawa, S.
name: Kinouchi, H.
name: Yashima, M.
name: Kitaoka, Y.
name: Shirage, P. M.
name: Eisaki, H.
name: Iyo, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report 75As-NMR study on the Fe-pnictide high-Tc superconductor Y0.95La0.05FeAsO_{1-y} (Y0.95La0.051111) with Tc=50 K that includes no magnetic rare-earth elements. The measurement of the nuclear-spin lattice-relaxation rate 75(1/T1) has revealed that the nodeless bulk superconductivity takes place at Tc=50 K while antiferromagnetic spin fluctuations (AFSFs) develop moderately in the normal state. These features are consistently described by the multiple fully-gapped s_\pm-wave model based on the Fermi-surface (FS) nesting. Incorporating the theory based on band calculations, we propose that the reason that Tc=50 K in Y0.95La0.051111 is larger than Tc=28 K in La1111 is that the FS multiplicity is maximized, and hence the FS nesting condition is better than that in La1111.
description: 4 pages, 3 figures, accepted for publication in Phys Rev. Lett
РАЗРАБОТКА  СТРУКТУРНОЙ СТРУКТУРЫ ГЕНДЕРНОЙ ОТВЕТСТВЕННОСТИ ЛИЧНОСТИ ПЕДАГОГА
Creators: name: Сагиндикова, Наргиза
Publisher: name: Zenodo
Year: 2023

description: В данной статье конкретизированы структурные особенности гендерной ответственности будущего педагога в первую очередь. Были представлены результаты, полученные от студентов второго, третьего, четвертого курсов, исследован ее анализ с различных сторон.
Optimizing Abstract Abstract Machines
Creators: name: Johnson, J. Ian
name: Labich, Nicholas
name: Might, Matthew
name: Van Horn, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences
subject: F.3.2

description: The technique of abstracting abstract machines (AAM) provides a systematic approach for deriving computable approximations of evaluators that are easily proved sound. This article contributes a complementary step-by-step process for subsequently going from a naive analyzer derived under the AAM approach, to an efficient and correct implementation. The end result of the process is a two to three order-of-magnitude improvement over the systematically derived analyzer, making it competitive with hand-optimized implementations that compute fundamentally less precise results.
description: Proceedings of the International Conference on Functional Programming 2013 (ICFP 2013). Boston, Massachusetts. September, 2013
Stationary rotating black holes in theories with gravitational Chern-Simons Lagrangian term
Creators: name: Bonora, Loriano
name: Cvitan, Maro
name: Prester, Predrag Dominis
name: Pallua, Silvio
name: Smolić, Ivica
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the effects of introducing purely gravitational Chern-Simons Lagrangian terms in ordinary Einstein gravity on stationary rotating black hole solutions and on the associated thermodynamical properties, in a generic number of dimensions which support these terms (i.e. in D = 4k-1). We analyze the conditions, namely the number of vanishing angular momenta, under which the contributions of the Chern-Simons term to the equations of motion and the black hole entropy vanish. The particular case of a 7-dimensional theory in which a purely gravitational Chern-Simons term is added to the Einstein-Hilbert Lagrangian in D=7 dimensions is investigated in some detail. As we have not been able to find exact analytic solutions in nontrivial cases, we turn to perturbation theory and calculate the first-order perturbative correction to the Myers-Perry metric in the case where all angular momenta are equal. The expansion parameter is a dimensionless combination linear in the Chern-Simons coupling constant and the angular momentum. Corrections to horizon and ergosurface properties, as well as black hole entropy and temperature, are presented.
description: 27 pages. Some general improvements, with main results unchanged. Clarification of statements on mass and angular momenta. Version accepted for publishing in Phys. Rev. D
M. König, M. Schulz (Hg.), Die Bundesrepublik Deutschland und die europäische Einigung 1949–2000. Politische Akteure, gesellschaftliche Kräfte und internationale Erfahrungen. Festschrift für Wolf D. Gruner zum 60. Geburtstag, 2003
Creators: name: König, Mareike
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 32 Nr. 3 (2005)