cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-Stationary Texture Synthesis by Adversarial Expansion
Creators: name: Zhou, Yang
name: Zhu, Zhen
name: Bai, Xiang
name: Lischinski, Dani
name: Cohen-Or, Daniel
name: Huang, Hui
Publisher: name: arXiv
Year: 2018
Subjects: subject: Graphics (cs.GR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The real world exhibits an abundance of non-stationary textures. Examples include textures with large-scale structures, as well as spatially variant and inhomogeneous textures. While existing example-based texture synthesis methods can cope well with stationary textures, non-stationary textures still pose a considerable challenge, which remains unresolved. In this paper, we propose a new approach for example-based non-stationary texture synthesis. Our approach uses a generative adversarial network (GAN), trained to double the spatial extent of texture blocks extracted from a specific texture exemplar. Once trained, the fully convolutional generator is able to expand the size of the entire exemplar, as well as of any of its sub-blocks. We demonstrate that this conceptually simple approach is highly effective for capturing large-scale structures, as well as other non-stationary attributes of the input exemplar. As a result, it can cope with challenging textures, which, to our knowledge, no other existing method can handle.
description: Accepted to SIGGRAPH 2018
Dynamical evolution in a one-dimensional incommensurate lattice with $\mathcal{PT}$ symmetry
Creators: name: Xu, Zhihao
name: Chen, Shu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate the dynamical evolution of a parity-time ($\mathcal{PT}$) symmetric extension of the Aubry-André (AA) model, which exhibits the coincidence of a localization-delocalization transition point with a $\mathcal{PT}$ symmetry breaking point. One can apply the evolution of the profile of the wave packet and the long-time survival probability to distinguish the localization regimes in the $\mathcal{PT}$ symmetric AA model. The results of the mean displacement show that when the system is in the $\mathcal{PT}$ symmetry unbroken regime, the wave-packet spreading is ballistic, which is different from that in the $\mathcal{PT}$ symmetry broken regime. Furthermore, we discuss the distinctive features of the Loschmidt echo with the post-quench parameter being localized in different $\mathcal{PT}$ symmetric regimes.
description: 12 pages, 12 figures
Avoiding unphysical kinetic traps in Monte Carlo simulations of strongly attractive particles
Creators: name: Whitelam, Stephen
name: Geissler, Phillip L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We introduce a `virtual-move' Monte Carlo (VMMC) algorithm for systems of pairwise-interacting particles. This algorithm facilitates the simulation of particles possessing attractions of short range and arbitrary strength and geometry, an important realization being self-assembling particles endowed with strong, short-ranged and angularly specific (`patchy') attractions. Standard Monte Carlo techniques employ sequential updates of particles and suffer from low acceptance rates when attractions are strong. Our algorithm avoids this slowing-down by proposing simultaneous moves of collections (clusters) of particles according to gradients of interaction energies. One particle first executes a `virtual' trial move. We determine which of its neighbours move in a similar fashion by calculating individual bond energies before and after the proposed move. We iterate this procedure and update simultaneously the positions of all affected particles. Particles move according to an approximation of realistic dynamics without requiring the explicit computation of forces, and without the step size restrictions required when integrating equations of motion. We also employ a size- and shape-dependent hydrodynamic damping of cluster movements. We discuss the virtual-move algorithm in the context of other Monte Carlo cluster-move schemes, and demonstrate its utility by applying it to a model of biological self-assembly.
description: 22 pages, 14 figures
Effect of the equilibrium pair separation on cluster structures
Creators: name: Yang, Y.
name: Sun, D. Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A simple pair potential, which equilibrium pair separation can be varied under a fixed interaction range, has been proposed. The new potential can make both face-centered-cubic(fcc) and body-centered-cubic(bcc) structure stable by simply changing one parameter. To investigate the general effect of the potential shape on cluster structures, the evolution of cluster structures is calculated for different equilibrium pair separations. The small size clusters($N<25$), which adopt the polytetrahedra, are almost independent on the details of the potential. For the large size clusters($25
Pestalozzi, Hans Conrad & Söhne (Pestaluz)
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1823

description: Ort: Zürich
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Fact or Factitious? Contextualized Opinion Spam Detection
Creators: name: Kennedy, Stefan
name: Walsh, Niall
name: Sloka, Kirils
name: Foster, Jennifer
name: McCarren, Andrew
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.7; I.2.6

description: In this paper we perform an analytic comparison of a number of techniques used to detect fake and deceptive online reviews. We apply a number machine learning approaches found to be effective, and introduce our own approach by fine-tuning state of the art contextualised embeddings. The results we obtain show the potential of contextualised embeddings for fake review detection, and lay the groundwork for future research in this area.
description: 6 pages, 3 figures, presented at the 2019 ACL Conference in Florence, Italy
High-energy zero-norm states and symmetries of string theory
Creators: name: Chan, Chuan-Tsung
name: Ho, Pei-Ming
name: Lee, Jen-Chi
name: Teraguchi, Shunsuke
name: Yang, Yi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: High-energy limit of zero-norm states (HZNS) in the old covariant first quantized (OCFQ) spectrum of the 26D open bosonic string, together with the assumption of a smooth behavior of string theory in this limit, are used to derive infinitely many linear relations among the leading high-energy, fixed angle behavior of four point functions of different string states. As a result, ratios among all high-energy scattering amplitudes of four arbitrary string states can be calculated algebraically and the leading order amplitudes can be expressed in terms of that of four tachyons as conjectured by Gross in 1988. A dual calculation can also be performed and equivalent results are obtained by taking the high-energy limit of Virasoro constraints. Finally, as a consistent sample calculation, we compute all high-energy scattering amplitudes of three tachyons and one massive state at the leading order by saddle-point approximation to justify our results.
description: 10 pages, no figure, modifications of text and references
Solier, Felix & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1823

description: Ort: Marseille
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Johannsen, F., Noormann, H.: Lernen für eine bewohnbare Erde
Creators: name: Weiße, Wolfram
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 40 Nr. 3 (1991): Ökumenische Rundschau, Band 40, Heft 3
p-DG cyclotomic nilHecke algebras II
Creators: name: Qi, You
name: Sussan, Joshua
Publisher: name: arXiv
Year: 2018
Subjects: subject: Representation Theory (math.RT)
subject: K-Theory and Homology (math.KT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 81R50, 16E20, 16E35

description: We categorify tensor products of the fundamental representation of quantum $\mathfrak{sl}_2$ at prime roots of unity building upon earlier work where a tensor product of two Weyl modules was categorified.
description: 80 pages, multiple diagrammatic computations. v2 contains corrections from referee reports. Accepted by the Memoirs of the AMS. Comments welcome
The unsustainability of sustainability: a new perception of applied ecology against the granfalloon’s mission
Creators: name: Fierro, Angelo
Publisher: name: BORNH Bulletin of Regional Natural History
Year: 2021

description: The unsustainability of sustainability wants to underline the improper and widespread use of a complex concept that cannot be trivialized through the proposal of technological solutions. Although technological solutions represent “comfortable” tools for social reassurance, the risk is a social drift generated by the phenomenon of the “granfalloon”. Behind the technological solutions there are new market proposals, which have nothing to do with the real resolution of the sustainability of the global socio-economic system. The perception of the whole socio-economic system as a single metabolic socio-ecological system, makes us interpret the role of technological solutions differently. The knowledge we have gained over the last 50 years on the functioning of natural systems represent consolidated bases for interpreting and providing solutions on the sustainability of mankind. This perception, while providing uncomfortable solutions, should change the perception of applied ecology within the academy community. Therefore, applied ecology no longer as a study of human effects on the ecosphere, but as a discipline that teaches mankind how to structure its socio-economic metabolism compatibly with the constraints imposed by the ecosphere.
description: BORNH Bulletin of Regional Natural History, V. 1 N. 2 (2021): BORNH 02/2021
Coupling Quintessence to Inflation in Supergravity
Creators: name: Brax, Philippe
name: Martin, Jerome
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The evolution of the quintessence field during a phase of chaotic inflation is studied. The inflaton and the quintesssence field are described in a supergravity framework where the coupling between the inflaton and quintessence is induced by non-renormalisable operators suppressed by the Planck mass. We show that the resulting quintessence potential during inflation possesses a time--dependent minimum playing the role of an attractor. The presence of this attractor forces the quintessence field to be small during inflation. These initial conditions are such that the quintessence field is on tracks now.
description: 16 pages, 6 figures
Poepplin, Gebrüder
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1823

description: Ort: Baltimore
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Algebras defined by Lyndon words and Artin-Schelter regularity
Creators: name: Gateva-Ivanova, Tatiana
Publisher: name: arXiv
Year: 2019
Subjects: subject: Rings and Algebras (math.RA)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 16E65, 16S38, 16P90, 16S30, 16S15, 16S37, 16P90, 17B30, 17B35, 17B70

description: Let $X= \{x_1, x_2, \cdots, x_n\}$ be a finite alphabet, and let $K$ be a field. We study classes $\mathfrak{C}(X, W)$ of graded $K$-algebras $A = K\langle X\rangle / I$, generated by $X$ and with a fixed set of obstructions $W$. Initially we do not impose restrictions on $W$ and investigate the case when all algebras in $\mathfrak{C} (X, W)$ have polynomial growth and finite global dimension $d$. Next we consider classes $\mathfrak{C} (X, W)$ of algebras whose sets of obstructions $W$ are antichains of Lyndon words. The central question is "when a class $\mathfrak{C} (X, W)$ contains Artin-Schelter regular algebras?" Each class $\mathfrak{C} (X, W)$ defines a Lyndon pair $(N,W)$ which determines uniquely the global dimension, $gl\dim A$, and the Gelfand-Kirillov dimension, $GK\dim A$, for every $A \in \mathfrak{C}(X, W)$. We find a combinatorial condition in terms of $(N,W)$, so that the class $\mathfrak{C}(X, W)$ contains the enveloping algebra $U\mathfrak{g}$ of a Lie algebra $\mathfrak{g}$. We introduce monomial Lie algebras defined by Lyndon words, and prove results on Groebner-Shirshov bases of Lie ideals generated by Lyndon-Lie monomials. Finally we classify all two-generated Artin-Schelter regular algebras of global dimensions $6$ and $7$ occurring as enveloping $U = U\mathfrak{g}$ of standard monomial Lie algebras. The classification is made in terms of their Lyndon pairs $(N, W)$, each of which determines also the explicit relations of $U$.
description: 51 pages
Examining the complex dynamics of open government: trends, determinants, and impacts
Creators: name: Tai, Kuang-Ting
Publisher: name: No Publisher Supplied
Year: 2021

description: Open government initiatives have been implemented at every level of government around the world in the last decade. These initiatives are fueled by a belief that open government will make governments more transparent, accountable, and collaborative. However, while open government initiatives continue to expand, basic questions remain regarding how this new wave of institutional reform actually impacts the quality of government. To address such ambiguity, this dissertation examines three interrelated research questions that are derived from the framework of the governance model and aim to address the different institutional, organizational, and individual effects of this reform: (1) At the institutional level, how do we conceptualize open government as a means of addressing social problems (e.g., lacking transparency or effectiveness)? (2) At the organizational level, what factors influence an organization’s efforts to implement open government initiatives? (3) At the individual level, can open government initiatives really empower individual users in ways that increase their confidence to participate in public affairs? This dissertation evaluates these questions in three essays which draw on distinct research methods and theoretical lenses, including contingency theory, diffusion of innovation theory, and social cognitive theory. Following the related requirements of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), Study 1 consists of a systematic literature review to examine open government research trends and the conceptualization of open government at different levels of government. Study 2, focusing on open government implementation in the context of New Jersey school districts, uses a qualitative comparative analysis (QCA) to identify combinations of determinants that are consistently associated with school district website openness. Study 3 investigates the causal relationship between the core policy tool of open government initiatives—open government data—and individuals’ perceived self-efficacy to examine whether open government initiatives can really strengthen the perception of empowerment. This study includes two online survey experiments, respectively comprising 840 and 960 American adults.
A "Vertical" Generalization of the binary Goldbach's Conjecture as applied on primes with prime indexes of any order i (i-primes)
Creators: name: Drăgoi, Andrei-Lucian
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: This article is a survey based on our earlier paper ("The 'Vertical' Generalization of the Binary Goldbach's Conjecture as Applied on 'Iterative' Primes with (Recursive) Prime Indexes (i-primeths)" [11]), a paper in which we have proposed a new generalization of the binary/"strong" Goldbach's Conjecture (GC) briefly called "the Vertical Goldbach's Conjecture" (VGC), which is essentially a meta-conjecture, as VGC states an in finite number of Goldbach-like conjectures stronger than GC, which all apply on "iterative" primes with recursive prime indexes (named "i-primes"). VGC was discovered by the author of this paper in 2007, after which it was improved and extended (by computational verifications) until the present (2020). VGC distinguishes as a very important "meta-conjecture" of primes because it states a new class containing an infinite number of conjectures stronger/stricter than GC. VGC has great potential importance in the optimization of the GC experimental verification (including other possible theoretical and practical applications in mathematics and physics). VGC can be also regarded as a very special self-similar property of the distribution of the primes. This present survey contains some new results on VGC.
description: 12 pages, 2 figures, 2 tables, medium-size version of the referenced article given as "Journal reference"
D8.3: Highfrequency data logging with a list of the included sites
Creators: name: Hohenegger, Cathy
name: Pedruzo-Bagazgoitia, Xabier
name: Wieners, Karl-Hermann
Publisher: name: Zenodo
Year: 2022

description: Work package in charge

WP8, Storms & Land

Executive summary

This documentation shows that the high-frequency data logging has been implemented in the two NextGEMS models ICON and IFS and provides instructions on how to use this feature. The documentation also provides a list of sites for which the logging will be enabled, a result of the discussion between scientists and stakeholders. (Task 8.3)

Conclusion & Results

For specified locations on Earth, it is now possible to output variables, for instance temperature or radiation or wind, at a very high frequency, a frequency which can be as high as the model time step (in the order of seconds to a few minutes). As a comparison, over the full Earth, two-dimensional variables are only outputted every 30 min due to the high storage requirement. This high frequency data logging is needed for model evaluation activities and for the NextGEMS pilot project on solar power. Variables, location and sampling frequency can be chosen according to the user needs, as communicated to the modeling centers. After discussion with scientists and stakeholders, 30 locations were chosen for the high frequency data logging. These locations correspond to sites with high quality observations, with a renewable energy park or locations of previous field campaigns.
Wegelin, Melchior
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Diessenhofen TG
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Coherence dynamics induced by attenuation and amplification Gaussian channels
Creators: name: Santos, Jonas F. G.
name: Vieira, C. H. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum Gaussian channels play a key role in quantum information theory. In particular, the attenuation and amplification channels are useful to describe noise and decoherence effects on continuous variables systems. They are directly associated to the beam splitter and two-mode squeezing operations, which have operational relevance in quantum protocols with bosonic models. An important property of these channels is that they are Gaussian completely positive maps and the action on a general input state depends on the parameters characterizing the channels. In this work, we study the coherence dynamics introduced by these channels on input Gaussian states. We derive explicit expressions for the coherence depending on the parameters describing the channels. By assuming a displaced thermal state with initial coherence as input state, for the attenuation case it is observed a revival of the coherence as a function of the transmissivity coefficient, whereas for the amplification channel the coherence reaches asymptotic values depending on the gain coefficient. Further, we obtain the entropy production for these class of operations, showing that it can be reduced by controlling the parameters involved. We write a simple expression for computing the entropy production due to the coherence for both channels. This can be useful to simulate many processes in quantum thermodynamics, as finite-time driving on bosonic modes.
Wenk, Martin, Sohn
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
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Centering ADMM for the Semidefinite Relaxation of the QAP
Creators: name: Kanoh, Shin-ichi
name: Yoshise, Akiko
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We propose a new method for solving the semidefinite (SD) relaxation of the quadratic assignment problem (QAP), called Centering ADMM. Centering ADMM is an alternating direction method of multipliers (ADMM) combining the centering steps used in the interior-point method. The first stage of Centering ADMM updates the iterate so that it approaches the central path by incorporating a barrier function term into the objective function, as in the interior-point method. If the current iterate is sufficiently close to the central path with a sufficiently small value of the barrier parameter, the method switches to the standard version of ADMM. We show that Centering ADMM (not employing a dynamic update of the penalty parameter) has global convergence properties. To observe the effect of the centering steps, we conducted numerical experiments with SD relaxation problems of instances in QAPLIB. The results demonstrate that the centering steps are quite efficient for some classes of instances.
Shear-induced crystallization of a dense rapid granular flow: hydrodynamics beyond the melting point?
Creators: name: Khain, Evgeniy
name: Meerson, Baruch
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate shear-induced crystallization in a very dense flow of mono-disperse inelastic hard spheres. We consider a steady plane Couette flow under constant pressure and neglect gravity. We assume that the granular density is greater than the melting point of the equilibrium phase diagram of elastic hard spheres. We employ a Navier-Stokes hydrodynamics with constitutive relations all of which (except the shear viscosity) diverge at the crystal packing density, while the shear viscosity diverges at a smaller density. The phase diagram of the steady flow is described by three parameters: an effective Mach number, a scaled energy loss parameter, and an integer number m: the number of half-oscillations in a mechanical analogy that appears in this problem. In a steady shear flow the viscous heating is balanced by energy dissipation via inelastic collisions. This balance can have different forms, producing either a uniform shear flow or a variety of more complicated, nonlinear density, velocity and temperature profiles. In particular, the model predicts a variety of multi-layer two-phase steady shear flows with sharp interphase boundaries. Such a flow may include a few zero-shear (solid-like) layers, each of which moving as a whole, separated by fluid-like regions. As we are dealing with a hard sphere model, the granulate is fluidized within the "solid" layers: the granular temperature is non-zero there, and there is energy flow through the boundaries of the "solid" layers. A linear stability analysis of the uniform steady shear flow is performed, and a plausible bifurcation diagram of the system, for a fixed m, is suggested. The problem of selection of m remains open.
description: 11 pages, 7 eps figures, to appear in PRE
KamLAND results and the radiogenic terrestrial heat
Creators: name: Fiorentini, Gianni
name: Lissia, Marcello
name: Mantovani, Fabio
name: Ricci, Barbara
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We find that recent results from the KamLAND collaboration on geologically produced antineutrinos, N(U+Th) = 28+16-15 events, correspond to a radiogenic heat production from Uranium and Thorium decay chains H(U+Th) = 38+35-33 TW. The 99% confidence limit on the geo-neutrino signal translates into the upper bound H(U+Th) < 162 TW, which is much weaker than that claimed by KamLAND, H(U+Th) < 60 TW, based on a too narrow class of geological models. We also performed an analysis of KamLAND data including recent high precision measurements of the C13(α,n)O16 cross section. The result, N(U+Th) = 31+14-13, corroborates the evidence (approx 2.5σ) for geo-neutrinos in KamLAND data.
description: 7 pages (RevTex), 2 figures. Minor changes that match the version accepted for publication on Phys. Lett. B
Wurzbach, Franz Martin
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Nürnberg
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Wieland, Hieronymus & Sohn (Wieland, Jerôme & Fils)
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Zimberlin
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: [Unbekannt]
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
QED: using Quality-Environment-Diversity to evolve resilient robot swarms
Creators: name: Bossens, David M.
name: Tarapore, Danesh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: In swarm robotics, any of the robots in a swarm may be affected by different faults, resulting in significant performance declines. To allow fault recovery from randomly injected faults to different robots in a swarm, a model-free approach may be preferable due to the accumulation of faults in models and the difficulty to predict the behaviour of neighbouring robots. One model-free approach to fault recovery involves two phases: during simulation, a quality-diversity algorithm evolves a behaviourally diverse archive of controllers; during the target application, a search for the best controller is initiated after fault injection. In quality-diversity algorithms, the choice of the behavioural descriptor is a key design choice that determines the quality of the evolved archives, and therefore the fault recovery performance. Although the environment is an important determinant of behaviour, the impact of environmental diversity is often ignored in the choice of a suitable behavioural descriptor. This study compares different behavioural descriptors, including two generic descriptors that work on a wide range of tasks, one hand-coded descriptor which fits the domain of interest, and one novel type of descriptor based on environmental diversity, which we call Quality-Environment-Diversity (QED). Results demonstrate that the above-mentioned model-free approach to fault recovery is feasible in the context of swarm robotics, reducing the fault impact by a factor 2-3. Further, the environmental diversity obtained with QED yields a unique behavioural diversity profile that allows it to recover from high-impact faults.
A step beyond Tsallis and Renyi entropies
Creators: name: Masi, Marco
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Tsallis and Rényi entropy measures are two possible different generalizations of the Boltzmann-Gibbs entropy (or Shannon's information) but are not generalizations of each others. It is however the Sharma-Mittal measure, which was already defined in 1975 (B.D. Sharma, D.P. Mittal, J.Math.Sci \textbf{10}, 28) and which received attention only recently as an application in statistical mechanics (T.D. Frank & A. Daffertshofer, Physica A \textbf{285}, 351 & T.D. Frank, A.R. Plastino, Eur. Phys. J., B \textbf{30}, 543-549) that provides one possible unification. We will show how this generalization that unifies Rényi and Tsallis entropy in a coherent picture naturally comes into being if the q-formalism of generalized logarithm and exponential functions is used, how together with Sharma-Mittal's measure another possible extension emerges which however does not obey a pseudo-additive law and lacks of other properties relevant for a generalized thermostatistics, and how the relation between all these information measures is best understood when described in terms of a particular logarithmic Kolmogorov-Nagumo average.
Degenerate Horava gravity
Creators: name: Barausse, Enrico
name: Crisostomi, Marco
name: Liberati, Stefano
name: ter Haar, Lotte
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Horava gravity breaks Lorentz symmetry by introducing a dynamical timelike scalar field (the khronon), which can be used as a preferred time coordinate (thus selecting a preferred space-time foliation). Adopting the khronon as the time coordinate, the theory is invariant only under time reparametrizations and spatial diffeomorphisms. In the infrared limit, this theory is sometimes referred to as khronometric theory. Here, we explicitly construct a generalization of khronometric theory, which avoids the propagation of Ostrogradski modes as a result of a suitable degeneracy condition (although stability of the latter under radiative corrections remains an open question). While this new theory does not have a general-relativistic limit and does not yield a Friedmann-Robertson-Walker-like cosmology on large scales, it still passes, for suitable choices of its coupling constants, local tests on Earth and in the solar system, as well as gravitational-wave tests. We also comment on the possible usefulness of this theory as a toy model of quantum gravity, as it could be completed in the ultraviolet into a 'degenerate Horava gravity' theory that could be perturbatively renormalizable without imposing any projectability condition.
description: 19 pages, no figures; Comments on the stability under quantum corrections amended in v2; CQG version
Study Pure Annihilation Decays $B_s^0(\bar B_s^0)\to D^{\pm}π^{\mp}$ in PQCD Approach
Creators: name: Li, Ying
name: Lu, Cai-Dian
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The rare decays $B_s^0\to D^\pm π^\mp$ and $\bar B_s^0\to D^\mp π^\pm$ can occur only via annihilation type diagrams in the standard model. In this paper, we calculate branching ratios of these decays in perturbative QCD approach ignoring soft final state interaction. From our calculation, we find that their branching ratios are at $\mathcal{O}(10^{-6})$ with large CP asymmetry, which may be measured in LHC-b experiment in future.
description: 14 pages,4 figures, typos corrected
Coexistence of single-mode and multi-longitudinal mode emission in the ring laser model
Creators: name: Font, J. L.
name: Vilaseca, R.
name: Prati, F.
name: Roldan, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A homogeneously broadened unidirectonal ring laser can emit in several longitudinal modes for large enough pump and cavity length because of Rabi splitting induced gain. This is the so called Risken-Nummedal-Graham-Haken (RNGH) instability. We investigate numerically the properties of the multi-mode solution. We show that this solution can coexist with the single-mode one, and its stability domain can extend to pump values smaller than the critical pump of the RNGH instability. Morevoer, we show that the multi-mode solution for large pump values is affected by two different instabilities: a pitchfork bifurcation, which preserves phase-locking, and a Hopf bifurcation, which destroys it.
description: 14 pages, 7 figures
Classical Solutions and Order of Zeros in Open String Field Theory
Creators: name: Igarashi, Y.
name: Itoh, K.
name: Katsumata, F.
name: Takahashi, T.
name: Zeze, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Earlier an analytic approach is proposed for classical solutions describing tachyon vacuum in open string field theory. Based on the approach, we construct a certain class of classical solutions written in terms of holomorphic functions with higher order zeros. Taking the simplest among the new classical solutions, we study the cohomology of the new BRS charge and make a numerical analysis of the vacuum energy. The results indicate that the new non-trivial solution is another analytic candidate for the tachyon vacuum.
description: 13 pages, 1 figure; references corrected
Paravicini, Gebrüder Rudolf & Emanuel, zum Falken
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1823

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Robust Beamforming Design for Intelligent Reflecting Surface Aided Cognitive Radio Systems with Imperfect Cascaded CSI
Creators: name: Zhang, Lei
name: Pan, Cunhua
name: Wang, Yu
name: Ren, Hong
name: Wang, Kezhi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, intelligent reflecting surface (IRS) is introduced to enhance the network performance of cognitive radio (CR) systems. Specifically, we investigate robust beamforming design based on both bounded channel state information (CSI) error model and statistical CSI error model for primary user (PU)-related channels in IRS-aided CR systems. We jointly optimize the transmit precoding (TPC) at the secondary user (SU) transmitter (ST) and phase shifts at the IRS to minimize the ST' s total transmit power subject to the quality of service of SUs, the limited interference imposed on the PU and unit-modulus of the reflective beamforming. The successive convex approximation (SCA) method, Schur's complement, General sign-definiteness principle, inverse Chi-square distribution and penalty convex-concave procedure are invoked for dealing with these intricate constraints. The non-convex optimization problems are transformed into several convex subproblems and efficient algorithms are proposed. Simulation results verify the efficiency of the proposed algorithms and reveal the impacts of CSI uncertainties on ST's minimum transmit power and feasibility rate of the optimization problems. Simulation results also show that the number of transmit antennas at the ST and the number of phase shifts at the IRS should be carefully chosen to balance the channel realization feasibility rate and the total transmit power.
description: Accept by IEEE Transactions on Cognitive Communications and Networking. Keywords: Reconfigurable Intelligent Surface, Intelligent Reflecting Surface, Cognitive Radio Networks, Robust Design, Imperfect CSI
Singularities of 1/2 Calabi-Yau 4-folds and classification scheme for gauge groups in four-dimensional F-theory
Creators: name: Kimura, Yusuke
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In a previous study, we constructed a family of elliptic Calabi-Yau 4-folds possessing a geometric structure that allowed them to be split into a pair of rational elliptic 4-folds. In the present study, we introduce a method of classifying the singularity types of this class of elliptic Calabi-Yau 4-folds. In brief, we propose a method to classify the non-Abelian gauge groups formed in four-dimensional (4D) $N=1$ F-theory for this class of elliptic Calabi-Yau 4-folds. To demonstrate our method, we explicitly construct several elliptic Calabi-Yau 4-folds belonging to this class and study the 4D F-theory thereupon. These constructions include a 4D model with two U(1) factors.
description: 17 pages
Pestalozzi-Schinz, Salomon, zum Steinbock (Pestaluz)
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1823

description: Ort: Zürich
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Nonequilibrium multicritical behavior in anisotropic Heisenberg ferromagnet driven by oscillating magnetic field
Creators: name: Acharyya, Muktish
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Heisenberg ferromagnet (uniaxially anisotropic along z-direction), in the presence of time dependent (but uniform over space) magnetic field, is studied by Monte Carlo simulation. The time dependent magnetic field was taken as elliptically polarised in such a way that the resulting field vector rotates in the XZ plane. In the limit of low anisotropy, the dynamical responses of the system are studied as functions of temperature and the amplitudes of the magnetic field. As the temperature decreases, it aws found that the system undergoes multiple dynamical phase transitions. In this limit, the multiple transitions were studied in details and the phase diagram for this observed multicritical behaviour was drawn in the field amplitude and temperature palne.The natures (continuous/discontinuous) of the transitions are determined by the temperature variations of fourth order Binder cumulant ratio and the distributions of the order parameter near the transition points. The transitions are supported by finite size study. The temperature variations of the variances of dynamic order parameter components (for different system sizes) indicate the existence of diverging length scale near the dynamic transition points. The frequency dependences of the transition temperatures of the multiple dynamic transition are also studied briefly.
description: 14 Pages Latex, 17 Postscript figures. To appear in Int. J. Mod. Phys. C (2006) May
Correcting a Nonparametric Two-sample Graph Hypothesis Test for Graphs with Different Numbers of Vertices with Applications to Connectomics
Creators: name: Alyakin, Anton A.
name: Agterberg, Joshua
name: Helm, Hayden S.
name: Priebe, Carey E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Random graphs are statistical models that have many applications, ranging from neuroscience to social network analysis. Of particular interest in some applications is the problem of testing two random graphs for equality of generating distributions. Tang et al. (2017) propose a test for this setting. This test consists of embedding the graph into a low-dimensional space via the adjacency spectral embedding (ASE) and subsequently using a kernel two-sample test based on the maximum mean discrepancy. However, if the two graphs being compared have an unequal number of vertices, the test of Tang et al. (2017) may not be valid. We demonstrate the intuition behind this invalidity and propose a correction that makes any subsequent kernel- or distance-based test valid. Our method relies on sampling based on the asymptotic distribution for the ASE. We call these altered embeddings the corrected adjacency spectral embeddings (CASE). We also show that CASE remedies the exchangeability problem of the original test and demonstrate the validity and consistency of the test that uses CASE via a simulation study. Lastly, we apply our proposed test to the problem of determining equivalence of generating distributions in human connectomes extracted from diffusion magnetic resonance imaging (dMRI) at different scales.
Pons, Louis, & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1823

description: Ort: Lyon
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
A Low-Frequency Torsion Pendulum with Interferometric Readout
Creators: name: Ross, M. P.
name: Venkateswara, K.
name: Hagedorn, C. A.
name: Leupold, C. J.
name: Forsyth, P. W. F.
name: Wegner, J. D.
name: Shaw, E. A.
name: Lee, J. G.
name: Gundlach, J. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We describe a torsion pendulum with a large mass-quadrupole moment and a resonant frequency of 2.8 mHz, whose angle is measured using a modified Michelson interferometer. The system achieved noise levels of $\sim200\ \text{prad}/\sqrt{\text{Hz}}$ between 0.2-30 Hz and $\sim10\ \text{prad}/\sqrt{\text{Hz}}$ above 100 Hz. Such a system can be applied to a broad range of fields from the study of rotational seismic motion and elastogravity signals to gravitational wave observation and tests of gravity.
Grohs, Gerhard, Czell, Gernot: Kirche in der Welt - Kirche der Laien?
Creators: name: Schroer, Jürgen
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 40 Nr. 3 (1991): Ökumenische Rundschau, Band 40, Heft 3
Snell, A., & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1823

description: Ort: Rom
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Generating Image Adversarial Examples by Embedding Digital Watermarks
Creators: name: Xiang, Yuexin
name: Li, Tiantian
name: Ren, Wei
name: Zhu, Tianqing
name: Choo, Kim-Kwang Raymond
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences
subject: I.2.0

description: With the increasing attention to deep neural network (DNN) models, attacks are also upcoming for such models. For example, an attacker may carefully construct images in specific ways (also referred to as adversarial examples) aiming to mislead the DNN models to output incorrect classification results. Similarly, many efforts are proposed to detect and mitigate adversarial examples, usually for certain dedicated attacks. In this paper, we propose a novel digital watermark-based method to generate image adversarial examples to fool DNN models. Specifically, partial main features of the watermark image are embedded into the host image almost invisibly, aiming to tamper with and damage the recognition capabilities of the DNN models. We devise an efficient mechanism to select host images and watermark images and utilize the improved discrete wavelet transform (DWT) based Patchwork watermarking algorithm with a set of valid hyperparameters to embed digital watermarks from the watermark image dataset into original images for generating image adversarial examples. The experimental results illustrate that the attack success rate on common DNN models can reach an average of 95.47% on the CIFAR-10 dataset and the highest at 98.71%. Besides, our scheme is able to generate a large number of adversarial examples efficiently, concretely, an average of 1.17 seconds for completing the attacks on each image on the CIFAR-10 dataset. In addition, we design a baseline experiment using the watermark images generated by Gaussian noise as the watermark image dataset that also displays the effectiveness of our scheme. Similarly, we also propose the modified discrete cosine transform (DCT) based Patchwork watermarking algorithm. To ensure repeatability and reproducibility, the source code is available on GitHub.
description: 10 pages, 4 figures
Large Nc Weinberg-Tomozawa interaction and negative parity s--wave baryon resonances
Creators: name: Garcia-Recio, C.
name: Nieves, J.
name: Salcedo, L. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is shown that in the 70 and 700 SU(6) irreducible spaces, the SU(6) extension of the Weinberg-Tomozawa (WT) s-wave meson-baryon interaction incorporating vector mesons ({\it hep-ph/0505233}) scales as ${\cal O}(N_c^0)$, instead of the well known ${\cal O}(N_c^{-1})$ behavior for its SU(3) counterpart. However, the WT interaction behaves as order ${\cal O}(N_c^{-1})$ within the 56 and 1134 meson-baryon spaces. Explicit expressions for the WT couplings (eigenvalues) in the irreducible SU(2$N_F$) spaces, for arbitrary $N_F$ and $N_c$, are given. This extended interaction is used as a kernel of the Bethe-Salpeter equation, to study the large $N_c$ scaling of masses and widths of the lowest--lying negative parity s-wave baryon resonances. Analytical expressions are found in the $N_c\to \infty$ limit, from which it can be deduced that resonance widths and excitation energies $(M_R-M)$ behave as order ${\cal O} (N^0_c)$, in agreement with model independent arguments, and moreover they fall in the 70-plet, as expected in constituent quark models for an orbital excitation. For the 56 and 1134 spaces, excitation energies and widths grow ${\cal O} (N_c^{1/2})$ indicating that such resonances do not survive in the large $N_c$ limit. The relation of this latter $N_c$ behavior with the existence of exotic components in these resonances is discussed. The interaction comes out repulsive in the 700.
description: 21 pages, 3 figures, requires wick.sty and young.sty. Subsection added. Conclusions revised. To appear in Physical Review D
What does it mean to "make sense" of physics?
Creators: name: Odden, Tor Ole B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: What does it mean to "make sense" of physics? It's not a simple question. Most people have an intuitive feeling for when things do (or do not) make sense to them. But, putting this feeling into words--especially actionable words--is another task entirely.
description: Accepted for publication in The Physics Teacher. https://aapt.scitation.org/journal/pte