cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
D3.5: QuantumDynamics E-CAM modules IV
Creators: name: Ahai Chen
Publisher: name: Zenodo
Year: 2019
Subjects: Quantum Dynamics
Surface Hopping
Exact Factorization

description: In this report for Deliverable 3.5 of E-CAM, 6 software modules in quantum dynamics are presented.
 All modules stem from the activities initiated during the State-of-the-Art Workshop (https://www.cecam.org/workshop1774/) held at Lyon (France) in June 2019 and the Extended Software Development Workshop in Quantum Dynamics (https://www.cecam.org/workshop1697/), held at Durham University (UK) in July 2019. The modules originate from the input of E-CAM's academic user base. They have been developed by members of the project (S. Bonella EPF-L), established collaborators (G. Worth University College London, S. Gomez University of Vienna, C. Sanz University of Madrid, D. Lauvergnat Univeristy of Paris Sud) and new contributors to the E-CAM repository (F. Agostini University of Paris Sud, Basile Curchod University of Durham, A. Schild ETH Zurich, S. Hupper and T. Plé Sorbonne University, G. Christopoulou University College London). The presence of new contributors indicates the interest of the community in our efforts. Furthermore, the contributors to modules in WP3 continue to be at different stages of their careers (in particular, Thomas Plé and G. Christopoulou are PhD students) highlighting the training value of our activities. Following the order of presentation, the 6 modules are named: CLstunfti, PIM_QTB, PerGauss, Direct Dynamics Database, Exact Factorization Analysis Code (EFAC), and GuessSOC. In this report, a short description is written for each module, followed by a link to the respective Merge-Request document on the GitLab service of E-CAM. These merge requests contain detailed information about the code development, testing and documentation of the modules.
Galactic Rings Revisited. I. CVRHS Classifications of 3962 Ringed Galaxies from the Galaxy Zoo 2 Database
Creators: name: Buta, R. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Rings are important and characteristic features of disc-shaped galaxies. This paper is the first in a series which re-visits galactic rings with the goals of further understanding the nature of the features and for examining their role in the secular evolution of galaxy structure. The series begins with a new sample of 3962 galaxies drawn from the Galaxy Zoo 2 citizen science database, selected because zoo volunteers recognized a ring-shaped pattern in the morphology as seen in Sloan Digital Sky Survey colour images. The galaxies are classified within the framework of the Comprehensive de Vaucouleurs revised Hubble-Sandage (CVRHS) system. It is found that zoo volunteers cued on the same kinds of ring-like features that were recognized in the 1995 Catalogue of Southern Ringed Galaxies (CSRG). This paper presents the full catalogue of morphological classifications, comparisons with other sources of classifications, and some histograms designed mainly to highlight the content of the catalogue. The advantages of the sample are its large size and the generally good quality of the images; the main disadvantage is the low physical resolution which limits the detectability of linearly small rings such as nuclear rings. The catalogue includes mainly inner and outer disc rings and lenses. Cataclysmic ("encounter-driven") rings (such as ring and polar ring galaxies) are recognized in less than 1\% of the sample.
description: Accepted for publication in Monthly Notices of the Royal Astronomical Society (146 pages with 10 figures and 11 tables)
Hidden invariance in Gurzadyan-Xue cosmological models
Creators: name: Vereshchagin, G. V.
name: Yegorian, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The dark energy formula derived by Gurzadyan and Xue which leads to a value fitting the SN data, provides a scaling relation between the physical constants and cosmological parameters and defines a set of cosmological models. In previous works we have considered several of those models and derived the cosmological equations for each case. In this letter, we present the phase portrait analysis of those models. Surprisingly we found, first, that the separatrix in the phase space which determines the character of solutions depends solely on the value of the current matter density. Namely, at $Ω_m>2/3$ the equations describe Friedmannian Universe with the classical singularity at the beginning. While at $Ω_m<2/3$ all solutions for all models start with zero density and non vanishing scale factor. Secondly, more remarkable, the value $Ω_{sep}=2/3$ defining the separatrix is the same for all models, which reveales an underlying invariance hidden in the models, possibly, due to the basic nature of the GX-scaling.
description: to appear in Physics Letters B
Additional file 1 of Antibiotic artificial bone implantation and external fixation for the treatment of infection after intramedullary nail fixation: a retrospective study of 33 cases
Creators: name: Hua, Haotian
name: Zhang, Lei
name: Guo, Zairan
name: Zhong, Wenlong
name: Chen, Jiangfei
name: Wang, Shilin
name: Guo, Jiangang
name: Wang, Xinwei
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Additional file 1.
Phase Structure of Z(3)-Polyakov-Loop Models
Creators: name: Wozar, Christian
name: Kaestner, Tobias
name: Wipf, Andreas
name: Heinzl, Thomas
name: Pozsgay, Balazs
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study effective lattice actions describing the Polyakov loop dynamics originating from finite-temperature Yang-Mills theory. Starting with a strong-coupling expansion the effective action is obtained as a series of Z(3)-invariant operators involving higher and higher powers of the Polyakov loop, each with its own coupling. Truncating to a subclass with two couplings we perform a detailed analysis of the statistical mechanics involved. To this end we employ a modified mean field approximation and Monte Carlo simulations based on a novel cluster algorithm. We find excellent agreement of both approaches concerning the phase structure of the theories. The phase diagram exhibits both first and second order transitions between symmetric, ferromagnetic and anti-ferromagnetic phases with phase boundaries merging at three tricritical points. The critical exponents nu and gamma at the continuous transition between symmetric and anti-ferromagnetic phases are the same as for the 3-state Potts model.
description: 20 pages, 22 figures
The effects of increased ground moisture on permafrost sustainability
Creators: name: Kerr, Mary
name: Roy-Léveillée, Pascale
Publisher: name: figshare
Year: 2018
Subjects: subject: 50101 Ecological Impacts of Climate Change
subject: FOS: Earth and related environmental sciences
subject: Environmental Science
subject: 40601 Geomorphology and Regolith and Landscape Evolution
subject: Soil Science
subject: 40607 Surface Processes

description:
Kerr, M., Roy-Leveillee, P. 2018. The effects of increased ground moisture on permafrost sustainability. 2018 Biology Graduate Seminar at Laurentian University, April 2018, Sudbury, ON. doi:10.6084/m9.figshare.6167927

Early stages of permafrost degradation and thermokarst development in Arctic and subarctic lowlands are often characterized by increased soil moisture due to thawing ground ice. In the field, increased soil moisture has been linked to two contradictory effects on ground temperatures: a cooling effect due to the high thermal conductivity of ice compared to water, and a warming effect due to the latent heat of ground moisture slowing ground-frost penetration in early winter. However, the factors controlling which effect will dominate at a given site, and whether increased soil moisture will facilitate or inhibit further permafrost degradation remain unclear. This research investigates the response of increased soil moisture on permafrost temperatures under different climatic conditions using numerical modelling and field data. It aims to identify the conditions under which increasing soil moisture transitions from having a ground cooling effect to having a warming effect that may facilitate continuous thermokarst development. A one-dimensional, heat conduction numerical model will be used to predict active layer depth and mean annual temperature at the top of permafrost based on air temperature, snow pack development, and ground thermal properties. The model will be calibrated with field data from monitoring stations located in peatlands of the discontinuous and continuous permafrost zones in three latitudinal gradients of Northern Canada. This will allow us to examine the effects of current increasing ground moisture, snow cover and air temperature. This research aims to improve the understanding of positive and negative feedback cycles that contribute to permafrost degradation during the early stages of thermokarst development and provide new insights into the timeline of these events. Knowledge of thermokarst development will better inform future restoration and adaptive management practices in response to climate change.
Casimir and Casimir-Polder forces with dissipation from first principles
Creators: name: Bordag, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider Casimir-Polder and Casimir forces with finite dissipation by coupling heat baths to the dipoles introducing, this way, dissipation from 'first principles'. We derive a representation of the free energy as an integral over real frequencies, which can be viewd as an generalization of the 'remarkable formula' introduced by Ford et. al. 1985. For instance, we obtain a nonperturbative representation for the atom-atom and atom-wall interactions. We investigate several limiting cases. From the limit $T\to0$ we show that the third law of thermodynamics cannot be violated within the given approach, where the dissipation parameter cannot depend on temperature 'by construction'. We conclude, that the given approach is insufficient to resolve the thermodynamic puzzle connected with the Drude model when inserted into the Lifshitz formula. Further we consider the transition to Matsubara representation and discuss modifications of the contribution from the zeroth Matsubara frequency.
description: 20 pages, several misprints corrected
Improving Logic Bomb Identification in Android Apps via Context-Aware Anomaly Detection
Creators: name: Alecci, Marco
name: Samhi, Jordan
name: Li, Li
name: Bissyandé, Tegawendé
name: Klein, Jacques
Publisher: name: CISPA
Year: 2024

description: One prominent tactic used to keep malicious behavior from being detected during dynamic test campaigns is logic bombs, where malicious operations are triggered only when specific conditions are satisfied. Defusing logic bombs remains an unsolved problem in the literature. In this work, we propose to investigate Suspicious Hidden Sensitive Operations (SHSOs) as a step toward triaging logic bombs. To that end, we develop a novel hybrid approach that combines static analysis and context-aware anomaly detection techniques to uncover SHSOs, which we predict as likely implementations of logic bombs. Concretely, DIFUZER++ identifies SHSO entry-points using an instrumentation engine and conducting an inter-procedural data-flow analysis. Subsequently, it extracts trigger-specific features to characterize SHSOs. To detect abnormal triggers, we utilize multiple One-Class SVM models, each trained on distinct sets of similar apps to more effectively capture normal behavior patterns. To assess the added value of the context-aware analysis, we compare DIFUZER++ against a baseline approach with no context (that we name DIFUZER). We show that the context-aware analysis leads to a significant improvement in both the precision and F1 score. Furthermore, the probability of successfully triaging logic bombs among HSOs increases from 29.7% to 58.8%. All our artifacts are released to the community.
Hamiltonian structure of the guiding center plasma model
Creators: name: Burby, J. W.
name: Sengupta, W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The guiding center plasma model (also known as kinetic MHD) is a rigorous sub-cyclotron-frequency closure of the Vlasov-Maxwell system. While the model has been known for decades, and it plays a fundamental role in describing the physics of strongly-magnetized collisionless plasmas, its Hamiltonian structure has never been found. We provide explicit expressions for the model's Poisson bracket and Hamiltonian, and thereby prove that the model is an infinite-dimensional Hamiltonian system. The bracket is derived in a manner that ensures it satisfies the Jacobi identity. We also report on several previously-unknown circulation theorems satisfied by the guiding center plasma model. Without knowledge of the Hamiltonian structure, these circulation theorems would be difficult to guess.
description: 5 pages with references, v. 2.0
The Number of Particles Released in Gauge Cosmic String Formation
Creators: name: Jensen, Bjørn
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a simple derivation of a new formal expression for the number of particles produced from a conformal scalar field vacuum due to the creation of a gauge cosmic string. We find that the number of particles released in string formation may be substantially lower than what previous estimates have indicated. Our derivation also indicates that there always exists at least one critical angle deficit less than $2π$, at which the particle production attains a maximum value. At the end we argue that additional (quantum) effects will occur in string formation. In particular, a new mechanism to produce small scale structure on strings is proposed.
description: 4 pages, twocolumn, RevTex, to appear in Phys.Lett.B
RENEWABLE ENERGY IN MEXICO: DEVELOPMENT AND OUTLOOK OF PHOTOVOLTAIC (PV) ENERGY / OBNOVLJIVI IZVORI ENERGIJE U MEKSIKU: RAZVOJ I OUTLOOK FOTONAPONSKE (PV) ENERGIJE
Creators: name: EL-Shimy, Mohamed
name: Vargas-Hernández, José G.
name: Rangel, Arturo Córdova
name: Nađ, Lucija
Publisher: name: figshare
Year: 2018
Subjects: subject: 90608 Renewable Power and Energy Systems Engineering (excl. Solar Cells)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: From the energy resources point of view, Mexico has an advanced worldwide rank in the availability of fossil resources as well as renewable energy resources. The major abundant conventional resources are oil and natural gas while the abundant renewable energy resources include solar, wind, hydro, geothermal, and biomass. Due to the geographical and topological conditions of Mexico, the meteorological conditions of various locations in Mexico are significantly Locational-dependent. In addition, the potential of the major renewable energy resources (i.e. wind, solar, and hydro) is neither fully explored nor exploited. With a focus of solar-PV energy, this paper analyzes the renewable energy industry in Mexico and investigates the most suitable way for promoting the public policies and finding the absolute advantages. In doing so, the international theories and experiences are considered as a development guide. International experiences show that it is possible to establish ‘green energy’ markets in which the end users cover their costs. These emerging markets are identified to be highly profitable for both sides i.e. the energy provider and the energy consumers. It can also be seen that government programs are available for supporting these markets; a fact that makes the green energy alternatives tempting for the investment of national and international firms. Some of the data presented in the presented study are based on techniques such as Herfindal-Hirshman Concentration Index (HHI), Pascual concentration indices, and game theory
title: ADCO, Boursier de Cîteaux : comptes (1489-1493) (11 H 1166), f. 00380
Creators: name: de la Côte-d'Or, Archives départementales
name: CBMA/CG21/F.PETOT/2019
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: comptes
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166), f. 00380, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Overlap Hypercube Fermions in QCD Simulations Near the Chiral Limit
Creators: name: Bietenholz, W.
name: Shcheredin, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The overlap hypercube fermion is a variant of a chirally symmetric lattice fermion, which is endowed with a higher level of locality than the standard overlap fermion. We apply this formulation in quenched QCD simulations with light quarks. In the p-regime we evaluate the masses of light pseudoscalar and vector mesons, as well as the pion decay constant and the renormalisation constant Z_A. In the epsilon-regime we present results for the leading Low Energy Constants of the chiral Lagrangian, Sigma and F_pi. To this end, we perform fits to predictions by chiral Random Matrix Theory and by different versions of quenched Chiral Perturbation Theory, referring to distinct correlation functions. These results, along with an evaluation of the topological susceptibility, are also compared to the outcome based on the standard overlap operator.
description: 41 pages, 20 figures
"Suche stets, mein Sohn nach Weisheit ..."
Creators: name: (:Unkn) Unknown
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1851
Subjects: subject: 090

description: Stammbuchspruch, von Zunz "in Theodor Sachs Notizbuch, 1851, 7 März eingeschrieben".
Quantum corrections for D=4 black holes and D=5 strings
Creators: name: Behrndt, Klaus
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In recent times quantum corrections for N=2 black holes in 4 dimensions have been addressed in the framework of double extreme black hole solutions, which are characterised by constant scalar fields. In this paper we generalize these solutions to non-constant scalar fields. This enables us to discuss quantum corrections for massless black holes and for configurations that are classically singular. We also discuss the relation to the 5-dimensional magnetic string solution.
description: Latex, 10 pages, errors/typos corrected (mainly in the appendix)
Data for "Para-hydrogen induced polarization applied to NMR and NAD(P)H-fluorescence lifetime imaging synergistically reveal enzymatic changes in human lymphoma cells upon Nicotinamide phosphoribosyltransferase inhibition: a proof-of-principle."
Creators: name: Niesner, Raluca
name: Ruth, Leben
Publisher: name: Zenodo
Year: 2024

description: Raw and analyzed data  "Para-hydrogen induced polarization applied to NMR and NAD(P)H-fluorescence lifetime imaging synergistically reveal enzymatic changes in human lymphoma cells upon Nicotinamide phosphoribosyltransferase inhibition: a proof-of-principle."
Nodal Statistics On Quantum Graphs
Creators: name: Alon, Lior
name: Band, Ram
name: Berkolaiko, Gregory
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34B45, 81Q35

description: It has been suggested that the distribution of the suitably normalized number of zeros of Laplacian eigenfunctions contains information about the geometry of the underlying domain. We study this distribution (more precisely, the distribution of the "nodal surplus") for Laplacian eigenfunctions of a metric graph. The existence of the distribution is established, along with its symmetry. One consequence of the symmetry is that the graph's first Betti number can be recovered as twice the average nodal surplus of its eigenfunctions. Furthermore, for graphs with disjoint cycles it is proven that the distribution has a universal form --- it is binomial over the allowed range of values of the surplus. To prove the latter result, we introduce the notion of a local nodal surplus and study its symmetry and dependence properties, establishing that the local nodal surpluses of disjoint cycles behave like independent Bernoulli variables.
description: 39 pages, 16 color figures; to appear in Communications in Mathematical Physics
Efficient Photoionization-Loading of Trapped Cadmium Ions with Ultrafast Pulses
Creators: name: Deslauriers, L.
name: Acton, M.
name: Blinov, B. B.
name: Brickman, K. -A.
name: Haljan, P. C.
name: Hensinger, W. K.
name: Hucul, D.
name: Katnik, S.
name: Kohn,, R. N.
name: Lee, P. J.
name: Madsen, M. J.
name: Maunz, P.
name: Olmschenk, S.
name: Moehring, D. L.
name: Stick, D.
name: Sterk, J.
name: Yeo, M.
name: Younge, K. C.
name: Monroe, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Atomic cadmium ions are loaded into radiofrequency ion traps by photoionization of atoms in a cadmium vapor with ultrafast laser pulses. The photoionization is driven through an intermediate atomic resonance with a frequency-quadrupled mode-locked Ti:Sapphire laser that produces pulses of either 100 fsec or 1 psec duration at a central wavelength of 229 nm. The large bandwidth of the pulses photoionizes all velocity classes of the Cd vapor, resulting in high loading efficiencies compared to previous ion trap loading techniques. Measured loading rates are compared with a simple theoretical model, and we conclude that this technique can potentially ionize every atom traversing the laser beam within the trapping volume. This may allow the operation of ion traps with lower levels of background pressures and less trap electrode surface contamination. The technique and laser system reported here should be applicable to loading most laser-cooled ion species.
description: 11 pages, 12 figures
LDPTrace: Locally Differentially Private Trajectory Synthesis.
Creators: name: Du, Yuntao
name: Hu, Yujia
name: Zhang, Zhikun
name: Fang, Ziquan
name: Chen, Lu
name: Zheng, Baihua
name: Gao, Yunjun
Publisher: name: CISPA
Year: 2024

description: Trajectory data has the potential to greatly benefit a wide-range of real-world applications, such as tracking the spread of the disease through people's movement patterns and providing personalized location-based services based on travel preference. However, privacy concerns and data protection regulations have limited the extent to which this data is shared and utilized. To overcome this challenge, local differential privacy provides a solution by allowing people to share a perturbed version of their data, ensuring privacy as only the data owners have access to the original information. Despite its potential, existing point-based perturbation mechanisms are not suitable for real-world scenarios due to poor utility, dependence on external knowledge, high computational overhead, and vulnerability to attacks. To address these limitations, we introduce LDPTrace, a novel locally differentially private trajectory synthesis framework. Our framework takes into account three crucial patterns inferred from users' trajectories in the local setting, allowing us to synthesize trajectories that closely resemble real ones with minimal computational cost. Additionally, we present a new method for selecting a proper grid granularity without compromising privacy. Our extensive experiments using real-world as well as synthetic data, various utility metrics and attacks, demonstrate the efficacy and efficiency of LDPTrace.
The Design of POD Considering Conventional and Renewable Power Generation
Creators: name: EL-Shimy, Mohamed
name: M. Mandour
name: F. Bendary
name: W.M. Mansour
Publisher: name: figshare
Year: 2018
Subjects: subject: 90608 Renewable Power and Energy Systems Engineering (excl. Solar Cells)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 90607 Power and Energy Systems Engineering (excl. Renewable Power)

description: FACTS devices employ high speed, and high power semi-conductor technologies to help better regulate the power systems. To improve the damping of oscillations in power systems, supplementary control laws can be applied to the existing FACTS devices. These supplementary actions are referred to as power oscillation damping (POD) control. In this paper, the POD controllers are designed using the frequency response method as a conventional design method. The POD will be designed in two test systems, the first one is a SMIB test system including conventional generation and series connected TCSC while the second system is a weakly interconnected power system including conventional and renewable wind power generation and shunt connected SVCs. In the weakly interconnected power system, the impact of wind power on the dynamic stability is considered and two situations are covered. The first one is the replacement of conventional power by wind power while the second one includes the addition of wind power to an existing conventional power generation system. The considered weakly interconnected power system is composed of two weakly interconnected areas. The objectives of wind power are to reduce the dependency between the two areas and the reduction of conventional fuel use while keeping acceptable damping levels. Two popular wind energy technologies are considered which are fixed speed SCIGs and the variable speed DFIGs. The results show that the wind power causes reduction in the damping of power system oscillations. Therefore, power oscillation damping controllers (POD) are integrated with the available SVCs. The modal analysis and the time-domain simulation are used for validating the POD efficient design.
Bericht über eine Ehrengabe der Jüdischen Gemeinde Berlin an Leopold Zunz
Creators: name: (:Unkn) Unknown
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1875
Subjects: subject: 090

description: Schilderung der Umstände, unter denen Leopold Zunz durch die Jüdische Gemeinde aus einer finanziellen Notlage geholfen wurde
Abelian Schur groups of odd order
Creators: name: Ponomarenko, Ilia
name: Ryabov, Grigory
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A finite group $G$ is called a Schur group if any Schur ring over $G$ is associated in a natural way with a subgroup of $Sym(G)$ that contains all right translations. It is proved that the group $C_3\times C_3\times C_p$ is Schur for any prime $p$. Together with earlier results, this completes a classification of the abelian Schur groups of odd order.
description: 15 pages
First Detection of NaI D lines in High-Redshift Damped Lyman-alpha Systems
Creators: name: Kondo, Sohei
name: Kobayashi, Naoto
name: Minowa, Yosuke
name: Tsujimoto, Takuji
name: Churchill, Christopher W.
name: Takato, Naruhisa
name: Iye, Masanori
name: Kamata, Yukiko
name: Terada, Hiroshi
name: Pyo, Tae-Soo
name: Takami, Hideki
name: Hayano, Yutaka
name: Kanzawa, Tomio
name: Saint-Jacques, D.
name: Gaessler, Wolfgang
name: Oya, Shin
name: Nedachi, Ko
name: Tokunaga, Alan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A Near-infrared (1.18-1.35 micron) high-resolution spectrum of the gravitationally-lensed QSO APM 08279+5255 was obtained with the IRCS mounted on the Subaru Telescope using the AO system. We detected strong NaI D 5891,5897 doublet absorption in high-redshift DLAs at z=1.062 and 1.181, confirming the presence of NaI, which was first reported for the rest-frame UV NaI 3303.3,3303.9 doublet by Petitjean et al. This is the first detection of NaI D absorption in a high-redshift (z>1) DLA. In addition, we detected a new NaI component in the z=1.062 DLA and four new components in the z=1.181 DLA. Using an empirical relationship between NaI and HI column density, we found that all "components" have large HI column density, so that each component is classified as DLA absorption. We also detected strong NaI D absorption associated with a MgII system at z=1.173. Because no other metal absorption lines were detected in this system at the velocity of the NaI absorption in previously reported optical spectra (observed 3.6 years ago), we interpret this NaI absorption cloud probably appeared in the line of sight toward the QSO after the optical observation. This newly found cloud is likely to be a DLA based upon its large estimated HI column density. We found that the N(NaI)/N(CaII) ratios in these DLAs are systematically smaller than those observed in the Galaxy; they are more consistent with the ratios seen in the Large Magellanic Cloud. This is consistent with dust depletion generally being smaller in lower metallicity environments. However, all five clouds of the z=1.181 system have a high N(NaI)/N(CaII) ratio, which is characteristic of cold dense gas. We tentatively suggest that the host galaxy of this system may be the most significant contributor to the gravitational-lens toward APM 08279+5255.
description: 22 pages, 6 Postscript figures, 3 tables, ApJ in press (Vol.643, 2 June 2006)
Quantum Mechanical Treatment of Two-Level Atoms Coupled to Continuum with an Ultraviolet Cutoff
Creators: name: Dinç, Fatih
name: Ercan, İlke
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we provide a rigorous quantum mechanical derivation for the coherent photon transport characteristics of a two-level atom coupled to a waveguide without linearizing the coupling coefficient between the light and the atom. We propose a novel single frequency sampling method utilizing a UV-cutoff that allows us to treat the singularities in real space scattering potential despite the non-convergence property. We also study the conditions under which the linearization of the coupling coefficient is an accurate assumption and find the resulting spontaneous emission and transport characteristics taking the radiative and non-radiative decay rates into account. This allows us to confirm and expand on the findings of the existing literature while obtaining the dynamic electronic polarizability for the two-level atom confined to a 1-D waveguide while using an interaction Hamiltonian with the rotating-wave approximation.
description: 3 figures, 7 pages
Reliability, Availability, and Maintainability (RAM) Analysis of Utility Power Transformers in Egypt
Creators: name: EL-Shimy, Mohamed
name: M. Abdelfatah
name: Hanafy Ismail1
Publisher: name: figshare
Year: 2018
Subjects: subject: 91507 Risk Engineering (excl. Earthquake Engineering)
subject: FOS: Other engineering and technologies

description: Estimation of the reliability, availability, and maintainability (RAM) for power transformers provides the ability to predict their techno-economical performance and to assess the economic impact of their forced outages on power systems. In addition, RAM analysis can be used, for example, to enhance utility reliability planning, influence transformer design/technology, and improve maintenance/condition monitoring practices. In this paper, RAM analysis of power transformers in Egypt’s power network is performed. The data are obtained from the Egyptian Electricity Transmission Company (EETC). The collected data are in the form of transformer outage reports for eight years, from 2002 to 2009, where the average number of transformers is 1922 in voltage populations ranging from 33 kV to 500 kV and MVA rating from 5 MVA to 500 MVA. Results show that true and estimated failure rates of power transformers in all voltage subpopulation are very high in comparison with the IEEE 1979 survey. In addition, the hazard functions show that the utility transformers in Egypt are operating in the wear out phase. It is also found that the availability and maintainability of the considered transformers are high in comparison with the IEEE 1979 survey.
Quantum Fluctuations and Dynamical Chaos: An Effective Potential Approach
Creators: name: Matinyan, Sergei G.
name: Müller, Berndt
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the intimate connection between the chaotic dynamics of a classical field theory and the instability of the one-loop effective action of the associated quantum field theory. Using the example of massless scalar electrodynamics, we show how the radiatively induced spontaneous symmetry breaking stabilizes the vacuum state against chaos, and we speculate that monopole condensation can have the same effect in non-Abelian gauge theories.
description: 12 pages, contribution to a special volume of ``Foundations in Physics'' commemorating L.C. Biedenharn (minor corrections)
Steady state modeling and analysis of DFIG for variable-speed variable-pitch wind turbines
Creators: name: EL-Shimy, Mohamed
Publisher: name: figshare
Year: 2018
Subjects: subject: 90608 Renewable Power and Energy Systems Engineering (excl. Solar Cells)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Due to its advantages, doubly-fed induction generator (DFIG) based variable-speed wind turbines (VSWT) are recently the most widely used topology of wind energy conversion systems (WECS). This paper provides a steady-state modeling and analysis of DFIG systems. A steady-state model for DFIG is derived based on a wound-rotor induction machine 3rd order model with a stator flux-oriented control scheme. This model is used for steady-state performance analysis of DFIG system connected directly to an infinite bus considering the optimal operation through following of the maximum power tracking characteristics. A fundamental steady-state stability criterion based on DFIG power-slip characteristics is used to study the steady-state stability of the system considering the entire maximum power-tracking characteristics. Also, the solo effect of the rotor voltage d-q components on the doubly fed induction machine (DFIM) steady-state performance and stability is analyzed. The results illustrate the steady-state stability limitations, as well as causes of steady-state instabilities of DFIG system as affected by the stator power demanded and the rotor-impressed variables. Moreover, DFIG rotor-speed range limitation causes and indicators that hinder steady-state stability are assessed. Therefore, the presented work is valuable for steady-state operation management of DFIG systems. Future work may include experimental verification of the given results and finding ways for improving stability of DFIG.
Magnetic proximity effect of a topological insulator and a ferromagnet in thin film bilayers of $BiSbTe_3$ and $SrRuO_3$
Creators: name: Koren, Gad
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic proximity effect of a topological insulator in contact with a ferromagnet is reported in thin film bilayers of 15 nm thick $BiSbTe_3$ on either 15 or 40 nm thick $SrRuO_3$ on (100) $SrTiO_3$ wafers. Magneto transport results of the bilayers were compared with those of reference films of 15 nm $BiSbTe_3$ and 15 or 40 nm $SrRuO_3$. Comparison of the temperature coefficient of resistance [(1/R)$\times$dR/dT which is qualitatively proportional to the magnetization] of the bilayer and reference ferromagnetic film normalized above $T_c$, shows a clear suppression in the bilayer by about 50% just below $T_c$, indicating a weaker proximity magnetization in the bilayer. Resistance hysteresis loops versus field at 1.85$\pm$0.05 K in the bilayer and reference films show a clear magnetic proximity effect, where the peak resistance of the bilayer at the coercive field shifts to lower fields by $\sim$30% compared to a hypothetical bilayer of two resistors connected in parallel with no interaction between the layers. Narrowing of the coercive peaks of the bilayers as compared to those of the reference ferromagnetic films by 25-35% was also observed, which represents another signature of the magnetic proximity effect.
description: This v2 version is the as published version in Phys. Rev. B, and it includes a new supplement at the end of this file
Strong-Isospin Violation in the Neutron-Proton Mass Difference from Fully-Dynamical Lattice QCD and PQQCD
Creators: name: Beane, Silas R.
name: Orginos, Kostas
name: Savage, Martin J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We determine the strong-isospin violating component of the neutron-proton mass difference from fully-dynamical lattice QCD and partially-quenched QCD calculations of the nucleon mass, constrained by partially-quenched chiral perturbation theory at one-loop level. The lattice calculations were performed with domain-wall valence quarks on MILC lattices with rooted staggered sea-quarks at a lattice spacing of b=0.125 fm, lattice spatial size of L=2.5 fm and pion masses ranging from m_pi ~ 290 MeV to ~ 350 MeV. At the physical value of the pion mass, we predict M_n - M_p |(d-u) = 2.26 +- 0.57 +- 0.42 +- 0.10 MeV where the first error is statistical, the second error is due to the uncertainty in the ratio of light-quark masses, eta=m_u/m_d, determined by MILC, and the third error is an estimate of the systematic due to chiral extrapolation.
description: 14 pages, 11 figures
Brief von S. Lindheim, Linz, Pfungst und L. A. Wolff von Vorstand der israelitischen Religionsgemeinde und der Landjudenschaft Darmstadt an Leopold Zunz, 09.10.1833
Creators: name: (:Unkn) Unknown
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1833
Subjects: subject: 090

description: Mitteilung, dass Leopold Zunz ihr Favorit für die Stelle des Oberrabbiners und Predigers ist
Universal Mixing of Quantum Walk on Graphs
Creators: name: Carlson, W.
name: Ford, A.
name: Harris, E.
name: Rosen, J.
name: Tamon, C.
name: Wrobel, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the set of probability distributions visited by a continuous-time quantum walk on graphs. An edge-weighted graph G is universal mixing if the instantaneous or average probability distribution of the quantum walk on G ranges over all probability distributions on the vertices as the weights are varied over non-negative reals. The graph is uniform mixing if it visits the uniform distribution. Our results include the following: (a) All weighted complete multipartite graphs are instantaneous universal mixing. This is in contrast to the fact that no unweighted complete multipartite graphs are uniform mixing (except for the four-cycle). (b) The weighted claw or star graph is a minimally connected instantaneous universal mixing graph. In fact, as a corollary, the unweighted claw is instantaneous uniform mixing. This adds a new family of uniform mixing graphs to a list that so far contains only the hypercubes. (c) Any weighted graph is average almost-uniform mixing unless its spectral type is sublinear in the size of the graph. This provides a nearly tight characterization for average uniform mixing on circulant graphs. (d) No weighted graphs are average universal mixing. This shows that weights do not help to achieve average universal mixing, unlike the instantaneous case. Our proofs exploit the spectra of the underlying weighted graphs and path collapsing arguments.
description: 14 pages, 4 figures
Annealing Search Based Algorithm for Sectionalizing Switches Placement on Radial Distribution Feeders for Reliability Enhancement
Creators: name: EL-Shimy, Mohamed
Publisher: name: figshare
Year: 2018
Subjects: subject: 90607 Power and Energy Systems Engineering (excl. Renewable Power)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The selection of an adequate number of switches and their location is a difficult task in distribution system planning. However, Distribution feeder sectionalization plays a key role in reliability enhancement, balancing, loss reduction, and automation of power distribution systems. The problem of placement of sectionalizing switches in radial distribution system (RDS) falls into the class of discrete variable optimization problem with single minimum. This paper presents the use of simulated annealing (SA) search algorithm in conjunction of previously published general-search technique to determine the optimal number and location of sectionalizing switches in RDSs based on techno-economical feasibility maximization. The problem formulation takes into account reliability, investment, and maintenance costs. The use of SA search greatly reduces the number of candidate locations of the sectionalizing switches with respect to the standalone general search technique. Optimal placement of sectionalizing switches is determined in a variety of distribution feeders. The results show that the combined SA-search technique offers an accurate method for placemat of sectionalizing switches in distribution systems.
Hidden universality in the merger rate distribution in the primordial black hole scenario
Creators: name: Kocsis, Bence
name: Suyama, Teruaki
name: Tanaka, Takahiro
name: Yokoyama, Shuichiro
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It has been proposed that primordial black holes (PBHs) form binaries in the radiation dominated era. Once formed, some fraction of them may merge within the age of the Universe by gravitational radiation reaction. We investigate the merger rate of the PBH binaries when the PBHs have a distribution of masses around ${\cal O}(10) M_\odot$, which is a generalization of the previous studies where the PBHs are assumed to have the same mass. After deriving a formula for the merger time probability distribution in the PBH mass plane, we evaluate it under two different approximations. We identify a quantity constructed from the mass-distribution of the merger rate density per unit cosmic time and comoving volume $\mathcal{R}(m_1,m_2)$, $α= -{(m_1+m_2)}^2\partial^2 \ln\mathcal{R}/\partial m_1\partial m_2 $, which universally satisfies $0.97 \lesssim α\lesssim 1.05$ for all binary masses independently of the PBH mass function. This result suggests that the measurement of this quantity is useful for testing the PBH scenario.
description: 13 pages, 3 figures. Accepted for publication in ApJ
title: ADCO, Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Cart. 32 (G 136), 745 folios, f. 0736
Creators: name: de la Côte d'Or, Archives départementales
name: CG21/F.PETOT/2012
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0736, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0736, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Modal based analysis of induction generator infinite-bus system
Creators: name: EL-Shimy, Mohamed
Publisher: name: figshare
Year: 2018
Subjects: subject: 90607 Power and Energy Systems Engineering (excl. Renewable Power)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Induction machines continue to be one of the most important inventions for mechanical power production when operated as motors and for electric power production when operated as generators. This paper presents a linearized model for a simple system consisting of an induction generator (IG) connected to an infinite bus through a linear passive transmission network. This model is used for studying small signal stability and for modal analysis of the system as affected by the network parameters and initial operating conditions. The considered network parameters are the series impedance of the interconnecting network and the shunt capacitive susceptance at the generator terminals. Moreover, a general algorithm is given for selecting the external network parameters that secure system stability and generator terminal voltage level. The work in this paper is valuable in both the design stage and analysis of induction generator based systems.
Classical corrections to black hole entropy in $d$ dimensions: a rear window to quantum gravity?
Creators: name: Blaschke, Martin
name: Stuchlík, Zdeněk
name: Blaschke, Filip
name: Blaschke, Petr
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We provide a simple derivation of the corrections for Schwarzschild and Schwarzschild-Tangherlini black hole entropy without knowing the details of quantum gravity. We will follow Bekenstein, Wheeler and Jaynes ideas, using summations techniques without calculus approximations, to directly find logarithmic corrections to well-known entropy formula for black holes. Our approach is free from pathological behaviour giving negative entropy for small values of black hole mass $M$. With the aid of Universality principle we will argue that this purely classical approach could open a window for exploring properties of quantum gravity.
description: arXiv admin note: text overlap with arXiv:0709.1812, arXiv:0906.4194 by other authors