cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High-energy String Scatterings of Compactified Open String
Creators: name: Lee, Jen-Chi
name: Takimi, Tomohisa
name: Yang, Yi
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate high-energy massive string scattering amplitudes of compactified open string. We derive infinite linear relations, or stringy symmetries, among soft high-energy string scattering amplitudes of different string states in the Gross kinematic regime (GR). In addition, we systematically analyze all hard power-law and soft exponential fall-off regimes of high-energy compactified open string scatterings by comparing the scatterings with their 26D noncompactified counterparts. In particular, we discover the existence of a power-law regime at fixed angle and an exponential fall-off regime at small angle for high-energy compactified open string scatterings. The linear relations break down as expected in all power-law regimes. The analysis can be extended to the high-energy scatterings of the compactified closed string, which corrects and extends the previous results in [28] .
description: 16 pages, 1 table. v2:typos corrected,references added. v3,v4:Eq.(26) typos. Eq.(27) corrected
Homogeneous geodesics in homogeneous Finsler spaces
Creators: name: Latifi, Dariush
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C60; 53C35; 53C30; 53C22

description: In this paper, we study homogeneous geodesics in homogeneous Finsler spaces. We first give a simple criterion that characterizes geodesic vectors. We show that the geodesics on a Lie group, relative to a bi-invariant Finsler metric, are the cosets of the one-parameter subgroups. The existence of infinitely many homogeneous geodesics on compact semi-simple Lie group is established. We introduce the notion of naturally reductive homogeneous Finsler space. As a special case, we study homogeneous geodesics in homogeneous Randers spaces. Finally, we study some curvature properties of homogeneous geodesics. In particular, we prove that the S-curvature vanishes along the homogeneous geodesics.
Symbolic dynamics and synchronization of coupled map networks with multiple delays
Creators: name: Atay, Fatihcan M.
name: Jalan, Sarika
name: Jost, Jürgen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use symbolic dynamics to study discrete-time dynamical systems with multiple time delays. We exploit the concept of avoiding sets, which arise from specific non-generating partitions of the phase space and restrict the occurrence of certain symbol sequences related to the characteristics of the dynamics. In particular, we show that the resulting forbidden sequences are closely related to the time delays in the system. We present two applications to coupled map lattices, namely (1) detecting synchronization and (2) determining unknown values of the transmission delays in networks with possibly directed and weighted connections and measurement noise. The method is applicable to multi-dimensional as well as set-valued maps, and to networks with time-varying delays and connection structure.
description: 13 pages, 4 figures
Michael Rüdiger Gerber, Die Schlesischen Provinzialblätter 1785-1849
Creators: name: Irgang, Winfried
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1996

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 45 Nr. 3 (1996)
Gauge Invariance and k_T-Factorization of Exclusive Processes
Creators: name: Feng, F.
name: Ma, J. P.
name: Wang, Q.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the $k_T$-factorization for exclusive processes, the nontrivial $k_T$-dependence of perturbative coefficients, or hard parts, is obtained by taking off-shell partons. This brings up the question of whether the $k_T$-factorization is gauge invariant. We study the $k_T$-factorization for the case $πγ^* \to γ$ at one-loop in a general covariant gauge. Our results show that the hard part contains a light-cone singularity that is absent in the Feynman gauge, which indicates that the $k_T$-factorization is {\it not} gauge invariant. These divergent contributions come from the $k_T$-dependent wave function of $π$ and are not related to a special process. Because of this fact the $k_T$-factorization for any process is not gauge invariant and is violated. Our study also indicates that the $k_T$-factorization used widely for exclusive B-decays is not gauge invariant and is violated.
description: Add some explanation, conclusion unchanged. Version to appear in PLB
Topological edge states of Kekulé-type photonic crystals induced by a synchronized rotation of unit cells
Creators: name: Zhou, R.
name: Lin, H.
name: Liu, Y.
name: Shi, X.
name: Tang, R.
name: Wu, Y.
name: Yu, Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Generating and manipulating Dirac points in artificial atomic crystals has received attention especially in photonic systems due to their ease of implementation. In this paper, we propose a two-dimensional photonic crystal made of a Kekulé lattice of pure dielectrics, where the internal rotation of cylindrical pillars induces optical Dirac-degeneracy breaking. Our calculated dispersion reveals that the synchronized rotation reverses bands and switches parity as well so as to induce a topological phase transition. Our simulation demonstrates that such topologically protected edge states can achieve robust transmission in defect waveguides under deformation, and therefore provides a pragmatically tunable scheme to achieve reconfigurable topological phases.
description: 11 pages, 7 figures, with updated Fig.~4
Nonlinear elastic stress response in granular packings
Creators: name: Tighe, B. P.
name: Socolar, J. E. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the nonlinear elastic response of a two-dimensional material to a localized boundary force, with the particular goal of understanding the differences observed between isotropic granular materials and those with hexagonal anisotropy. Corrections to the classical Boussinesq result for the stresses in an infinite half-space of a linear, isotropic material are developed in a power series in inverse distance from the point of application of the force. The breakdown of continuum theory on scales of order of the grain size is modeled with phenomenological parameters characterizing the strengths of induced multipoles near the point of application of the external force. We find that the data of Geng et al. on isotropic and hexagonal packings of photoelastic grains can be fit within this framework. Fitting the hexagonal packings requires a choice of elastic coefficients with hexagonal anisotropy stronger than that of a simple ball and spring model. For both the isotropic and hexagonal cases, induced dipole and quadrupole terms produce propagation of stresses away from the vertical direction over short distances. The scale over which such propagation occurs is significantly enhanced by the nonlinearities that generate hexagonal anisotropy.
description: 15 pages, 12 figures; additional discussion added at several points in text
Polyelectrolyte Condensation Induced by Linear Cations
Creators: name: Guáqueta, Camilo
name: Luijten, Erik
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We examine the role of the condensing agent in the formation of polyelectrolyte bundles, via grand-canonical Monte Carlo simulations. Following recent experiments we use linear, rigid divalent cations of various lengths to induce condensation. Our results clarify and explain the experimental results for short cations. For longer cations we observe novel condensation behavior owing to alignment of the cations. We also study the role of the polyelectrolyte surface charge density, and find a nonmonotonic variation in bundle stability. This nonmonotonicity captures two trends that have been observed in separate experiments.
description: To appear in Physical Review Letters
Kazimir Kleofasovič Lavrinovič, Al`bertina. Očerki istorii kenigsbergskogo universiteta
Creators: name: Wörster, Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
H. C. Erik Midelfort, Verrückte Hoheit. Wahn und Kummer in deutschen Herrscherhäusern
Creators: name: Jähnig, Bernhart
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 1 (1998)
Global Fractional Analytic Perturbation Theory in QCD with Selected Applications
Creators: name: Bakulev, Alexander P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give the generalization of Fractional Analytic Perturbation Theory (FAPT) for QCD observables, recently developed both for the Euclidean and Minkowski regions of squared momentum transfer q^2, which takes into account heavy-quark thresholds. The original analytic approach to QCD, initiated by Jones, Solovtsov and Shirkov, is shortly summarized. We also shortly consider the basic aspects of FAPT and then concentrate on the accounting for the heavy-quark thresholds problem and the construction of global version of FAPT. We discuss what one should use as an analytic coupling in the timelike region q^2=s>0 for the e^{+}e^{-}-annihilation and the pion form factor, and consider applications to phenomenologically relevant processes (the factorizable part of the pion form factor and the Higgs boson decay into a b\bar{b} pair), as well as to the summation of perturbative series.
description: 63 pages, 15 figures, in russian (first part of Doktor-Nauk thesis), published in Physics of Particles and Nuclei, typos corrected (English version avalable on request); corrected formulas (3.14b)-(3.14c) and (B9b)
Vytautas Žalys, Ringen um Identität. Warum Litauen zwischen 1923 und 1939 im Memelgebiet keinen Erfolg hatte
Creators: name: Wörster, Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 2 (1998)
Numerical Studies of Quantum Hall Ferromagnetism in Two-Subband Systems
Creators: name: Hao, Xiao-Jie
name: Tu, Tao
name: Zhao, Yong-Jie
name: Guo, Guang-Can
name: Jiang, H. W.
name: Guo, Guo-Ping
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We carry out a numerical study of the quantum Hall ferromagnetism in a two-subband system using a set of experimental parameters in a recently experiment [X. C. Zhang, I. Martin, and H. W. Jiang, Phys. Rev. B \textbf{74}, 073301 (2006)]. Employing the self-consistence local density approximation for growth direction wave function and the Hartree-Fock theory for the pseudospin anisotropy energy, we are able to account for the easy-axis and easy-plane quantum Hall ferromagnetism observed at total filling factor $ν= 3$ and $ν= 4$, respectively. Our study provides some insight of how the anisotropy energy, which highly depends upon the distribution of growth direction wave functions, determines the symmetry of the quantum Hall ferromagnets.
description: 8 pages, 4 figures
Unsupervised Motion Retargeting for Human-Robot Imitation
Creators: name: Annabi, Louis
name: Ma, Ziqi
name: Nguyen, Sao Mai
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This early-stage research work aims to improve online human-robot imitation by translating sequences of joint positions from the domain of human motions to a domain of motions achievable by a given robot, thus constrained by its embodiment. Leveraging the generalization capabilities of deep learning methods, we address this problem by proposing an encoder-decoder neural network model performing domain-to-domain translation. In order to train such a model, one could use pairs of associated robot and human motions. Though, such paired data is extremely rare in practice, and tedious to collect. Therefore, we turn towards deep learning methods for unpaired domain-to-domain translation, that we adapt in order to perform human-robot imitation.
description: Companion of the 2024 ACM/IEEE International Conference on Human-Robot Interactio, Mar 2024, Boulder (CO), United States
Die Geschichte der slawischen Philologie an der Schlesischen Friedrich-Wilhelms-Universität in Breslau
Creators: name: Schaller, Helmut Wilhelm
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 1 (1995)
Magda Ádám, The Little Entente and Europe (1920-1929)
Creators: name: Hoensch, Jörg K.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 2 (1995)
Whale Detection Enhancement through Synthetic Satellite Images
Creators: name: Gaur, Akshaj
name: Liu, Cheng
name: Lin, Xiaomin
name: Karapetyan, Nare
name: Aloimonos, Yiannis
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: With a number of marine populations in rapid decline, collecting and analyzing data about marine populations has become increasingly important to develop effective conservation policies for a wide range of marine animals, including whales. Modern computer vision algorithms allow us to detect whales in images in a wide range of domains, further speeding up and enhancing the monitoring process. However, these algorithms heavily rely on large training datasets, which are challenging and time-consuming to collect particularly in marine or aquatic environments. Recent advances in AI however have made it possible to synthetically create datasets for training machine learning algorithms, thus enabling new solutions that were not possible before. In this work, we present a solution - SeaDroneSim2 benchmark suite, which addresses this challenge by generating aerial, and satellite synthetic image datasets to improve the detection of whales and reduce the effort required for training data collection. We show that we can achieve a 15% performance boost on whale detection compared to using the real data alone for training, by augmenting a 10% real data. We open source both the code of the simulation platform SeaDroneSim2 and the dataset generated through it.
Charge Inversion of Divalent Ionic Solutions in Silica Channels
Creators: name: Lorenz, Christian D.
name: Travesset, Alex
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recent experiments (F.H.J. Van Der Heyden et al., PRL 96, 224502 (2006)) of streaming currents in silica nanochannels with divalent ions report charge inversion, i.e. interfacial charges attracting counterions in excess of their own nominal charge, in conflict with existing theoretical and simulation results. We reveal the mechanism of charge inversion by using all-atomic molecular dynamics simulations. Our results show excellent agreement with experiments, both qualitatively and quantitatively. We further discuss the implications of our study for the general problem of ionic correlations in solutions as well as in regards of the properties of silica-water interfaces.
description: 5 pages, 5 figures
Towards the Secrecy Capacity of the Gaussian MIMO Wire-tap Channel: The 2-2-1 Channel
Creators: name: Shafiee, Shabnam
name: Liu, Nan
name: Ulukus, Sennur
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We find the secrecy capacity of the 2-2-1 Gaussian MIMO wire-tap channel, which consists of a transmitter and a receiver with two antennas each, and an eavesdropper with a single antenna. We determine the secrecy capacity of this channel by proposing an achievable scheme and then developing a tight upper bound that meets the proposed achievable secrecy rate. We show that, for this channel, Gaussian signalling in the form of beam-forming is optimal, and no pre-processing of information is necessary.
description: Submitted to IEEE Transactions on Information Theory
All-Optical Synthesis of an Arbitrary Linear Transformation Using Diffractive Surfaces
Creators: name: Kulce, Onur
name: Mengu, Deniz
name: Rivenson, Yair
name: Ozcan, Aydogan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We report the design of diffractive surfaces to all-optically perform arbitrary complex-valued linear transformations between an input (N_i) and output (N_o), where N_i and N_o represent the number of pixels at the input and output fields-of-view (FOVs), respectively. First, we consider a single diffractive surface and use a matrix pseudoinverse-based method to determine the complex-valued transmission coefficients of the diffractive features/neurons to all-optically perform a desired/target linear transformation. In addition to this data-free design approach, we also consider a deep learning-based design method to optimize the transmission coefficients of diffractive surfaces by using examples of input/output fields corresponding to the target transformation. We compared the all-optical transformation errors and diffraction efficiencies achieved using data-free designs as well as data-driven (deep learning-based) diffractive designs to all-optically perform (i) arbitrarily-chosen complex-valued transformations including unitary, nonunitary and noninvertible transforms, (ii) 2D discrete Fourier transformation, (iii) arbitrary 2D permutation operations, and (iv) high-pass filtered coherent imaging. Our analyses reveal that if the total number (N) of spatially-engineered diffractive features/neurons is N_i x N_o or larger, both design methods succeed in all-optical implementation of the target transformation, achieving negligible error. However, compared to data-free designs, deep learning-based diffractive designs are found to achieve significantly larger diffraction efficiencies for a given N and their all-optical transformations are more accurate for N < N_i x N_o. These conclusions are generally applicable to various optical processors that employ spatially-engineered diffractive surfaces.
description: 46 Pages, 12 Figures
การพัฒนาระบบบูรณาการสารสนเทศสำหรับผู้บริหารมหาวิทยาลัย
Creators: name: สัณชัย ยงกุลวณิช
name: ทองใบ สุดชารี
name: เอื้อน ปิ่นเงิน
name: ทิวัตถ์ มณีโชติ
Publisher: name: มหาวิทยาลัยราชภัฏพระนคร
Year: 2012
Subjects: ระบบบูรณาการ สารสนเทศสำหรับผู้บริหารมหาวิทยาลัย

description: 1, 6, วารสารวิชาการและวิจัย มทร.พระนคร
Klebanov-Witten theory with massive dynamical flavors
Creators: name: Bigazzi, Francesco
name: Cotrone, Aldo L.
name: Paredes, Angel
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the addition of a large number of massive dynamical flavors to the Klebanov-Witten theory, the quiver gauge theory describing the low energy dynamics of Nc D3-branes at the conifold singularity. Massive flavors are introduced by means of Nf D7-branes which are holomorphically embedded and smeared along the transverse directions. After some general comments on the validity of the smearing procedure, we find the full backreacted supergravity solution corresponding to a particular class of massive embeddings. The solution depends on a running effective number of flavors, whose functional form follows from the smeared embedding. The running reflects the integrating in/out of massive degrees of freedom in the dual field theory as the energy scale is changed. We study how the dynamics of the theory depends on the flavor parameters, mainly focusing on the static quark-antiquark potential. As expected, we find that the dynamical flavors tend to screen the static color charges.
description: 31 pages, 8 figures; v2: few comments and a reference added, minor changes
A lower semicontinuous time separation function for $C^0$ spacetimes
Creators: name: Ling, Eric
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The time separation function (or Lorentzian distance function) is a fundamental object used in Lorentzian geometry. For smooth spacetimes it is known to be lower semicontinuous, and in fact, continuous for globally hyperbolic spacetimes. Moreover, an axiom for Lorentzian length spaces - a synthetic approach to Lorentzian geometry - is the existence of a lower semicontinuous time separation function. Nevertheless, the usual time separation function is $\textit{not}$ necessarily lower semicontinuous for $C^0$ spacetimes due to bubbling phenomena. In this paper, we introduce a class of curves called "nearly timelike" and show that the time separation function for $C^0$ spacetimes is lower semicontinuous when defined with respect to nearly timelike curves. Moreover, this time separation function agrees with the usual one when the metric is smooth. Lastly, sufficient conditions are found guaranteeing the existence of a nearly timelike maximizer between two points in a $C^0$ spacetime.
description: 18 pages. v3 agrees with published version
Christine van Eickels, Schlesien im böhmischen Ständestaat. Voraussetzungen und Verlauf der böhmischen Revolution von 1618 in Schlesien
Creators: name: Irgang, Winfried
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1996

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 45 Nr. 3 (1996)
Development of intelligent system of mobile robot movement planning in unknown dynamic environment by means of multi-agent system
Creators: name: Nemeikšis, A.
name: Osadčuks, V.
Publisher: name: Agronomy Research
Year: 2019
Subjects: multi-agent system
unknown environment
neural network
dynamic obstacles
planned track
article

description: Through the ages the world has conceived the projects which are aimed at creating diverse models of robots that would be beneficial for exploration of different dangerous surfaces where human participation is excluded. Therefore, the main task of the study of this article is to develop the researches, the object of which is mobile robot movement in unfamiliar environment, based on multi agent apparatus system and neural networks. The aim of the research is to develop methods for creating intellectual systems for planning mobile robot movement in unfamiliar environment applying the methods of multi agent apparatus and neural networks ensuring the robot executes the planned and adjusted on the way safe trajectory in an environment with unknown obstacles. Accordingly, the entire study of the article is based on a two-stage process. The first stage involves determination of distance between the robot and the obstacles in its operating area as well as classification of the possible location of obstacles, based on the information received from distance sensors, using the model of multilayer neural networks. During the second stage bypassing obstacles, wall tracking, movement-to-destination as well as speed management agents are developed. As the result of the study, a method was suggested for creating neural network model for classification of environment into agents and their consistent switching, which, according to the classification table compiled, involves all the possible locations of obstacles occurring on the robot’s movement trajectory and allows reducing the number of unfamiliar environment situations that are necessary to identify.
The causal effect of environment on halo mass and concentration
Creators: name: Cadiou, Corentin
name: Pontzen, Andrew
name: Peiris, Hiranya V.
name: Lucie-Smith, Luisa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Understanding the impact of environment on the formation and evolution of dark matter halos and galaxies is a crucial open problem. Studying statistical correlations in large simulated populations sheds some light on these impacts, but the causal effect of an environment on individual objects is harder to pinpoint. Addressing this, we present a new method for resimulating a single dark matter halo in multiple large-scale environments. In the initial conditions, we 'splice' (i.e. insert) the Lagrangian region of a halo into different Gaussian random fields, while enforcing consistency with the statistical properties of $Λ$CDM. Applying this technique, we demonstrate that the mass of halos is primarily determined by the density structure inside their Lagrangian patches, while the halos' concentration is more strongly affected by environment. The splicing approach will also allow us to study, for example, the impact of the cosmic web on accretion processes and galaxy quenching.
description: 6 pages, 5 figures. Accepted 2021 September 10. Received 2021 September 9; in original form 2021 July 7
L'epoca d'oro dello star system hollywoodiano (1914-1929)
Creators: name: Boschi, Alberto
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: After taking into consideration the rising and development of Hollywood star  system, this essay focuses on the main star figures, both male and female,  who worked as leading actors in the American movie industry during the  silent era. Such stars have been arranged by five categories: serial heroes  and heroines, Victorian ladies and sophisticated divas, vamps and exotic  beauties, comedians and flappers, American heroes and Latin lovers.
description: Annali Online  Lettere - Ferrara, I 1 (2006)
Coupled-channel meson-meson scattering in the diabatic framework
Creators: name: Bruschini, R.
name: González, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We apply the diabatic framework, a QCD-based formalism for the unified study of quarkoniumlike systems in terms of heavy quark-antiquark and open-flavor meson-meson components, to the description of coupled-channel meson-meson scattering. For this purpose, we first introduce a numerical scheme to find the solutions of the diabatic Schrödinger equation for energies in the continuum, then we derive a general formula for calculating the meson-meson scattering amplitudes from these solutions. We thus obtain a completely nonperturbative procedure for the calculation of open-flavor meson-meson scattering cross sections from the diabatic potential, which is directly connected to lattice QCD calculations. A comprehensive analysis of various elastic cross sections for open-charm and open-bottom meson-meson pairs is performed in a wide range of the center-of-mass energies. The relevant structures are identified, showing a spectrum of quasi-conventional and unconventional quarkoniumlike states. In addition to the customary Breit-Wigner peaks we obtain nontrivial structures such as threshold cusps and minimums. Finally, our results are compared with existing data and with results from our previous bound-state--based analysis, finding full compatibility with both.
description: 15 pages, 3 figures; v2: extended bibliography, new paragraph in Introduction, corrected statement near end of Sec. II, additional minor modifications
A language for mathematical knowledge management
Creators: name: Kieffer, Steven
name: Avigad, Jeremy
name: Friedman, Harvey
Publisher: name: arXiv
Year: 2008
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.4.1; I.2.4

description: We argue that the language of Zermelo Fraenkel set theory with definitions and partial functions provides the most promising bedrock semantics for communicating and sharing mathematical knowledge. We then describe a syntactic sugaring of that language that provides a way of writing remarkably readable assertions without straying far from the set-theoretic semantics. We illustrate with some examples of formalized textbook definitions from elementary set theory and point-set topology. We also present statistics concerning the complexity of these definitions, under various complexity measures.
Non-local magnon transport in a magnetic domain wall wave guide
Creators: name: Hartmann, Dion M. F.
name: Rückriegel, Andreas
name: Duine, Rembert A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetic domain walls function as a wave guide for low energy magnons. In this paper we develop the theory for the non-local transport of these bound magnons through a ferromagnetic insulator that are injected and detected electrically in adjacent normal metal leads by spin-flip scatting processes and the (inverse) spin-Hall effect. Our set-up requires a twofold degeneracy of the magnetic ground state, which we realize by an easy axis and hard axis anisotropy, in the ferromagnetic insulator. This is readily provided by a broad range of materials. The domain wall is a a topologically protected feature of the system and we obtain the non-local spin transport through it. Thereby we provide a framework for reconfigureable magnonic devices.
description: 5 pages, 4 figures
Magnetohydrodynamic experiments on cosmic magnetic fields
Creators: name: Stefani, Frank
name: Gailitis, Agris
name: Gerbeth, Gunter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: It is widely known that cosmic magnetic fields, i.e. the fields of planets, stars, and galaxies, are produced by the hydromagnetic dynamo effect in moving electrically conducting fluids. It is less well known that cosmic magnetic fields play also an active role in cosmic structure formation by enabling outward transport of angular momentum in accretion disks via the magnetorotational instability (MRI). Considerable theoretical and computational progress has been made in understanding both processes. In addition to this, the last ten years have seen tremendous efforts in studying both effects in liquid metal experiments. In 1999, magnetic field self-excitation was observed in the large scale liquid sodium facilities in Riga and Karlsruhe. Recently, self-excitation was also obtained in the French "von Karman sodium" (VKS) experiment. An MRI-like mode was found on the background of a turbulent spherical Couette flow at the University of Maryland. Evidence for MRI as the first instability of an hydrodynamically stable flow was obtained in the "Potsdam Rossendorf Magnetic Instability Experiment" (PROMISE). In this review, the history of dynamo and MRI related experiments is delineated, and some directions of future work are discussed.
description: 25 pages, 26 figures, to appear in ZAMM
Horst-Dieter Freiherr von Enzberg, Die Goetheschule in Graudenz und das deutschpolnische Verhältnis (1920-1945)
Creators: name: Kotowski, Albert S.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
Brachyrhynchus monedulus Stal 1865
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae
Brachyrhynchus
Brachyrhynchus monedulus

description: Brachyrhynchus monedulus Stål, 1865
Mezira rugosa Signoret, 1860: 957 (preoccupied, synonymized by Stål,1865 (3): 34). ST(S): Madagascar; NHMW.
Brachyrhynchus monedula Stål, 1865 (3): 34 (redescr.)
Brachyrhynchus monedulus Kormilev & Froeschner, 1987: 118
Distr.: Madagascar; (Diego Suarez [=Antseranana], Vallée d’Ambolo, Vohibory, Isalo, Bevazaha- Ankarafatsika: Hoberlandt, 1957))
Ref.: Hoberlandt, 1957 (key,redescr.,fig.,distr.), Kormilev & Froeschner, 1987: 118 (cat.)
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on pages 51-52, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
Die Bischöfe des Heiligen Römischen Reiches 1448 bis 1648. Ein biographisches Lexikon
Creators: name: Irgang, Winfried
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 1 (1998)
Exploring the strong interaction of three-body systems at the LHC
Creators: name: ALICE Collaboration
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Deuterons are atomic nuclei composed of a neutron and a proton held together by the strong interaction. Unbound ensembles composed of a deuteron and a third nucleon have been investigated in the past using scattering experiments and they constitute a fundamental reference in nuclear physics to constrain nuclear interactions and the properties of nuclei. In this work, K$^{+}-$d and p$-$d femtoscopic correlations measured by the ALICE Collaboration in proton$-$proton (pp) collisions at $\sqrt{s}=13$ TeV at the Large Hadron Collider (LHC) are presented. It is demonstrated that correlations in momentum space between deuterons and kaons or protons allow us to study three-hadron systems at distances comparable with the proton radius. The analysis of the K$^{+}-$d correlation shows that the relative distances at which deuterons and protons or kaons are produced are around 2 fm. The analysis of the p$-$d correlation shows that only a full three-body calculation that accounts for the internal structure of the deuteron can explain the data. In particular, the sensitivity of the observable to the short-range part of the interaction is demonstrated. These results indicate that correlations involving light nuclei in pp collisions at the LHC will also provide access to any three-body systems in the strange and charm sectors.
description: 26 pages, 3 captioned figures, 3 tables, authors from page 20, published version figures at http://alice-publications.web.cern.ch/node/9595
Evaluating different water-land-boundary approximations to improve sar-derived digital elevation models
Creators: name: Schneider, B.
name: Wortmeyer, E.
name: Schmitz, S.
name: Thiele, A.
name: Havel, P.
name: Dirks, H.
name: Paparoditis N., Lafarge F. Yang M. Y. Hinz S. Feitosa R. Q. Weinmann M. Jutzi B., Mallet C. [Hrsg.]
Publisher: name: International Society for Photogrammetry and Remote Sensing (ISPRS)
Year: 2021

description: The coastline of the German Wadden Sea is constantly subjected to the tides and the tidal-induced environmental changes like erosion and accumulation of sediments need to be monitored constantly. This task requires digital elevation models (DEMs), which are derived from remote sensing data. To model those DEMs, a separation of data collected over landmasses and water bodies is required. In the GeoWAM project the potential of airborne SAR-data (F-SAR) is investigated for monitoring purposes in the Wadden Sea. As part of the project, this paper focuses on the suitability of F-SAR data regarding the derivation of water-land-boundaries (WLBs). Therefore, water-land-boundaries based on independent data sets are compared and evaluated. Analyzed data sets include data collected via F-SAR, airborne laserscanning (ALS), on site GNSS measured WLB points and sea-level data from two acoustic gauges. The algorithms were tested on a study site on Spiekeroog island. Our results show, that the accuracies of the derived WLBs mostly depend on the on-site topography and sediments. The spatial deviation between the reference data and the approximated WLBs is mostly less than 2 m horizontally and 0.15 m vertically. Identified challenges to overcome are mostly related to processing of F-SAR data in areas with highly water saturated sediments. Our results suggest, that F-SAR data in tidal flats is not necessarily dependent on further supplementing surveys, as one of the main advantages of the F-SAR data is the potential to derive DEMs and WLBs from the same data set.
Amphibious Transport of Fluids and Solids by Soft Magnetic Carpets
Creators: name: Demirörs, Ahmet F.
name: Aykut, Sümeyye
name: Ganzeboom, Sophia
name: Meier, Yuki
name: Hardeman, Robert
name: de Graaf, Joost
name: Mathijssen, Arnold J. T. M.
name: Poloni, Erik
name: Carpenter, Julia A.
name: Unlu, Caner
name: Zenhausern, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: One of the major challenges in modern robotics is controlling micromanipulation by active and adaptive materials. In the respiratory system, such actuation enables pathogen clearance by means of motile cilia. While various types of artificial cilia have been engineered recently, they often involve complex manufacturing protocols and focus on transporting liquids only. Here, we create soft magnetic carpets via an easy self-assembly route based on the Rosensweig instability. These carpets can transport liquids but also solid objects that are larger and heavier than the artificial cilia, using a crowd-surfing effect. This amphibious transportation is locally and reconfigurably tuneable by simple micromagnets or advanced programmable magnetic fields with a high degree of spatial resolution. We identify and model two surprising cargo reversal effects due to collective ciliary motion and non-trivial elastohydrodynamics. While our active carpets are generally applicable to integrated control systems for transport, mixing and sorting, these effects could also be exploited for microfluidic viscosimetry and elastometry.
Adaptive estimation of a distribution function and its density in sup-norm loss by wavelet and spline projections
Creators: name: Giné, Evarist
name: Nickl, Richard
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Given an i.i.d. sample from a distribution $F$ on $\mathbb{R}$ with uniformly continuous density $p_0$, purely data-driven estimators are constructed that efficiently estimate $F$ in sup-norm loss and simultaneously estimate $p_0$ at the best possible rate of convergence over Hölder balls, also in sup-norm loss. The estimators are obtained by applying a model selection procedure close to Lepski's method with random thresholds to projections of the empirical measure onto spaces spanned by wavelets or $B$-splines. The random thresholds are based on suprema of Rademacher processes indexed by wavelet or spline projection kernels. This requires Bernstein-type analogs of the inequalities in Koltchinskii [Ann. Statist. 34 (2006) 2593-2656] for the deviation of suprema of empirical processes from their Rademacher symmetrizations.
description: Published in at http://dx.doi.org/10.3150/09-BEJ239 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Marek Andrzejewski, Ludzie Wolnego Miasta Gdańska 1920-1939. Informator biograficzny.
Creators: name: Hartmann, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 2 (1998)
Global solvability for semi-discrete Kirchhoff equation
Creators: name: Hirosawa, Fumihiko
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper, we consider the global solvability and energy conservation for initial value problem of nonlinear semi-discrete wave equation of Kirchhoff type, which is a discretized model of Kirchhoff equation.
"Ne pestifera doctrina corrumpat gregem dominicum". Zur Konfrontation zwischen Wyclifismus und Konziliarismus im Umkreis der Universität Krakau in der ersten Hälfte des 15. Jahrhunderts
Creators: name: Wünsch, Thomas
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 1 (1995)
Renormalization of non-singlet quark operator matrix elements for off-forward hard scattering
Creators: name: Moch, S.
name: Van Thurenhout, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate non-singlet quark operator matrix elements of deep-inelastic scattering in the chiral limit including operators with total derivatives. This extends previous calculations with zero-momentum transfer through the operator vertex which provides the well-known anomalous dimensions for the evolution of parton distributions, as well as calculations in off-forward kinematics utilizing conformal symmetry. Non-vanishing momentum-flow through the operator vertex leads to mixing with total derivative operators under renormalization. In the limit of a large number of quark flavors $n_f$ and for low moments in full QCD, we determine the anomalous dimension matrix to fifth order in the perturbative expansion in the strong coupling $α_s$ in the $\overline{\mbox{MS}}$-scheme. We exploit consistency relations for the anomalous dimension matrix which follow from the renormalization structure of the operators, combined with a direct calculation of the relevant diagrams up to fourth order.
description: 39 pages, LaTeX, 1 figure, journal version
Passing to an effective 4D phantom cosmology from 5D vacuum theory of gravity
Creators: name: Aguilar, Jose Edgar Madriz
name: Bellini, Mauricio
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Starting from a five-dimensional (5D) vacuum theory of gravity where the extra coordinate is considered as noncompact, we investigate the possibility of inducing four-dimensional (4D) phantom scenarios by applying form-invariance symmetry transformations. In particular we obtain phantom scenarios for two cosmological frameworks. In the first framework we deal with an induced 4D de-Sitter expansion and in the second one a 4D induced model where the expansion of the universe is dominated by a decreasing cosmological parameter $Λ(t)$ is discussed.
description: version accepted in Physics Letters B
A note on the connection between the universal relaxation bound and the covariant entropy bound
Creators: name: Pesci, Alessandro
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A recently proposed universal lower-bound to the characteristic relaxation times of perturbed thermodynamic systems, derived from quantum information theory and (classical) thermodynamics and known to be saturated for (certain) black holes, is investigated in the light of the gravity/thermodynamics connection. A statistical-mechanical property, unrelated to gravity, essential for the validity of the generalized covariant entropy bound, namely the existence of a lower-limiting value l* for the size of thermodynamic systems, is found to provide a way to understand the universal relaxation bound, thus regardless of the kind of foundations (i.e. whether conventional or information-based) of the statistical-mechanical description. As a by-product an example of a conventional system (i.e. not a black hole) seemingly saturating the universal relaxation bound is provided.
description: One reference added; some editing
Biomimetic Airfoil Design for Improved Efficiency in Hybrid VTOL Unmanned Aerial Vehicles
Creators: name: Hegde, Dhruv
Publisher: name: AstroGEN
Year: 2023

description: This proposal introduces a paradigm shift in the design of airfoils for scaled unmanned aerial vehicles (UAVs), with a focus on the MQ-9 as a hybrid Vertical Takeoff and Landing (VTOL) platform. Contemporary UAVs often rely on conventional NACA airfoil profiles, such as NACA 0012, for their wings. However, inherent inefficiencies in certain flight conditions have prompted a critical examination of these airfoil structures. This paper expands on the drawbacks associated with conventional airfoils, utilizing statistical evidence to underscore limitations in lift-to-drag ratios and adaptability to variable flight regimes. In response to these challenges, the proposal advocates for a biomimetic approach to airfoil design, drawing inspiration from the diverse structures observed in the wings of various bird species. By delving into the intricate details of bird wing features and leveraging current research on the aerodynamic efficiencies of specific avian designs, this paper seeks to identify novel insights that can be translated into UAV airfoil improvements. The study explores the adaptability and efficiency inherent in natural flight structures, aiming to overcome the limitations of existing UAV airfoils. Emphasizing the importance of specific NACA airfoil choices in UAV design, the proposal suggests a departure from conventional airfoils in favor of tailored biomimetic alternatives. The potential benefits of this shift include significantly improved lift-to-drag ratios, enhanced maneuverability, and increased efficiency across a broader range of operating conditions. To substantiate this proposal, the paper will delve into the structural intricacies of wings from various bird species, highlighting specific wing features that contribute to their aerodynamic efficiencies. Additionally, the research will review current studies on the aerodynamics of birds, identifying key principles that can be incorporated into the design of UAV airfoils.
Denken und Handeln in den polnischen Teilungsgebieten und in Polen nach 1918. Ein politisch-ethischer Vergleich
Creators: name: Strobel, Georg W.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 2 (1995)
Die Herzöge in Preußen und das Bistum Kulm (1525-1691)
Creators: name: Opgenoorth, Ernst
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1996

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 45 Nr. 3 (1996)
Magdalena Niedzielska, Niemieckie towarzystwa naukowe w Prusach Zachodnich w latach 1815-1920
Creators: name: Hartmann, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)