cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Employing the Digitization in Sudanese Higher Education institutions to Enhance the Decision Making Process: Challenges and Barriers
Creators: name: Osman Abdalla Mohamed Elhadi*
name: Eslam Hassan Gorshi Mohamed
name: Ezaldeen Abdalla Hasabelgawi
Publisher: name: Zenodo
Year: 2025
Subjects: Digitization employment, Decision Making process, Sudan, Sudanese higher education, Digitization Challenges and Barriers.

description: Abstract: This study aims to explores the challenges and barriers impeding the employment of digitization to enhance decision-making processes in Sudanese higher education institutions. Due to expedite Proliferation of digital technologies, the integration of Information and Communication Technology (ICT) with traditional management operations has become vital for organizational transformation, which results in informed and efficient decision-making. The study utilized a quantitative methodology, gathering data from 198 employees across Sudanese higher education institutions through structured questionnaires to investigate the managerial and financial, technological, and social challenges and barriers. Quantitative analytical techniques, such as descriptive statistics, Pearson correlation, and simple linear regression were employed the findings reveals statistically significant impacts across the three challenges and barriers dimensions. The study hypotheses were tested using correlation and simple regression test, the result reveals a strong relation between the dependent variable and independent variables. The results also indicate that managerial challenges and barriers such as strategic discontinuity, limited ICT competencies, and budgetary constraints explain 67% of the changes in digitization employment (R² = 0.669). Technological challenges and barriers, including infrastructure incompatibility and poor internet coverage, account for 70% of the changes in digitization employment (R² = 0.700), while social challenges and barriers including low digital literacy and resistance to change, explain 71% in digitization employment (R² = 0.707).

These findings underscore the necessity for strategic planning and infrastructure development to fully utilize the digitization in managerial decision-making.
Phonon-enhanced superconductivity at the FeSe/SrTiO3 interface
Creators: name: Song, Q.
name: Yu, T. L.
name: Lou, X.
name: Xie, B. P.
name: Xu, H. C.
name: Wen, C. H. P.
name: Yao, Q.
name: Zhang, S. Y.
name: Zhu, X. T.
name: Guo, J. D.
name: Peng, R.
name: Feng, D. L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The dream of room temperature superconductors has inspired intense research effort to find routes for enhancing the superconducting transition temperature (Tc). Therefore, single-layer FeSe on a SrTiO3 substrate, with its extraordinarily high Tc amongst all interfacial superconductors and iron based superconductors, is particularly interesting, but the mechanism underlying its high Tc has remained mysterious. Here we show through isotope effects that electrons in FeSe couple with the oxygen phonons in the substrate, and the superconductivity is enhanced linearly with the coupling strength atop the intrinsic superconductivity of heavily-electron-doped FeSe. Our observations solve the enigma of FeSe/SrTiO3, and experimentally establish the critical role and unique behavior of electron-phonon forward scattering in a correlated high-Tc superconductor. The effective cooperation between interlayer electron-phonon interactions and correlations suggests a path forward in developing more high-Tc interfacial superconductors, and may shed light on understanding the high Tc of bulk high temperature superconductors with layered structures.
description: 21 pages, 4 figures
Interpreting the kinematics of the extended gas in distant radiogalaxies from 8-10m telescope spectra
Creators: name: Villar-Martin, M.
name: Alonso-Herrero, A.
name: Alighieri, S. di Serego
name: Vernet, J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The nature of the extreme kinematics in the extended gas of distant radio galaxies (z>0.7) is still an open question. With the advent of the 8-10 m telescope generation and the development of NIR arrays we are in the position for the first time to develop a more detailed study by using lines other than Lya and [OII]3727 depending on redshift. In this paper we review the main sources of uncertainty in the interpretation of the emission line kinematics: the presence of several kinematic components, Lya absorption by neutral gas/dust and the contribution of scattered light to some of the lines. As an example, several kinematic components can produce apparent, false rotation curves. We propose methods to solve these uncertainties. We propose to extend the methods applied to low redshift radio galaxies to investigate the nature of the kinematics in distant radio galaxies: by means of the spectral decomposition of the strong optical emission lines (redshifted into the NIR) we can isolate the different kinematic components and study the emission line ratios for the individual components. If shocks are responsible for the extreme kinematics, we should be able to isolate a kinematic component (the shocked gas) with large FWHM (>900 km/s), low ionization level [OIII]5007/Hb~2-4 and weak HeII4686/Hb<0.07, together with a narrow component (~few hundred km/s) with higher ionization level and strong HeII emission (HeII/Hb~0.5)
description: 11 pages, 6 Figures, to be published in A&A Supplement Series
Additional file 1: of The development and evaluation of a computerized decision aid for the treatment of psychotic disorders
Creators: name: Tasma, Magda
name: Roebroek, Lukas
name: Liemburg, Edith
name: Knegtering, Henderikus
name: Delespaul, Philippe
name: Boonstra, Albert
name: Swart, Marte
name: Castelein, Stynke
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Science Policy

description: Clinical decision making in daily care - Staff version. (DOCX 41Â kb)
MPEC 2025-D249 : 2024 FP2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: 01_0468
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
title: ADCO, Cartulaire de Fontenay, second fragment (XIIIe siècle), Cart. 201 (15 H 9), folios 47-142, f. 006v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2009
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: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire de Fontenay, second fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), folios 47-142. Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Fontenay, second fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), folios 47-142, f. 006v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb119679755
description: Provenance: https://www.geonames.org/7874015
description: Provenance: http://www.idref.fr/027691802/id
description: Provenance: abbaye de Fontenay
description: Provenance: http://www.wikidata.org/entity/Q464918
Applications and Challenges of Real-time Mobile DNA Analysis
Creators: name: Ko, Steven Y.
name: Sassoubre, Lauren
name: Zola, Jaroslaw
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Genomics (q-bio.GN)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: The DNA sequencing is the process of identifying the exact order of nucleotides within a given DNA molecule. The new portable and relatively inexpensive DNA sequencers, such as Oxford Nanopore MinION, have the potential to move DNA sequencing outside of laboratory, leading to faster and more accessible DNA-based diagnostics. However, portable DNA sequencing and analysis are challenging for mobile systems, owing to high data throughputs and computationally intensive processing performed in environments with unreliable connectivity and power. In this paper, we provide an analysis of the challenges that mobile systems and mobile computing must address to maximize the potential of portable DNA sequencing, and in situ DNA analysis. We explain the DNA sequencing process and highlight the main differences between traditional and portable DNA sequencing in the context of the actual and envisioned applications. We look at the identified challenges from the perspective of both algorithms and systems design, showing the need for careful co-design.
Blackhole-Bigbang Theory Demonstration
Creators: name: Nguyen, Nghi C.
Publisher: name: OSF
Year: 2022
Subjects: #hyperspace
#microgravity
#space
#warpdrive
ftl
hyperdrive
hyperspace
microgravity
space
warpdrive

description: Demonstration of PDF Graphical Codes of BHBB Theory of expansion model.
Timing by Stellar Pulsations as an Exoplanet Discovery Method
Creators: name: Hermes, J. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The stable oscillations of pulsating stars can serve as accurate timepieces, which may be monitored for the influence of exoplanets. An external companion gravitationally tugs the host star, causing periodic changes in pulsation arrival times. This method is most sensitive to detecting substellar companions around the hottest pulsating stars, especially compact remnants like white dwarfs and hot subdwarfs, as well as delta Scuti variables (A stars). However, it is applicable to any pulsating star with sufficiently stable oscillations. Care must be taken to ensure that the changes in pulsation arrival times are not caused by intrinsic stellar variability; an external, light-travel-time effect from an exoplanet identically affects all pulsation modes. With more long-baseline photometric campaigns coming online, this method is yielding new detections of substellar companions.
description: 9 pages, 2 figures: Invited review to appear in 'Handbook of Exoplanets,' Springer Reference Works, edited by Hans J. Deeg and Juan Antonio Belmonte
Anomaly candidates and invariants of D=4, N=1 supergravity theories
Creators: name: Brandt, Friedemann
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: All anomaly candidates and the form of the most general invariant local action are given for old and new minimal supergravity, including the cases where additional Yang--Mills and chiral matter multiplets are present. Furthermore nonminimal supergravity is discussed. In this case local supersymmetry itself may be anomalous and some of the corresponding anomaly candidates are given explicitly. The results are obtained by solving the descent equations which contain the consistency equation satisfied by integrands of anomalies and invariant actions.
description: 19 pages, LaTex, NIKHEF-H 93-12, ITP-UH 07/93
Absence of a true long-range orbital order in a two-leg Kondo ladder
Creators: name: Xavier, J. C.
name: Malvezzi, A. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate, through the density-matrix renormalization group and the Lanczos technique, the possibility of a two-leg Kondo ladder present an incommensurate orbital order. Our results indicate a staggered short-range orbital order at half-filling. Away from half-filling our data are consistent with an incommensurate quasi-long-range orbital order. We also observed that an interaction between the localized spins enhances the rung-rung current correlations.
description: 7 pages, 6 figures, changed the introduction and added some discussions
title: Portal Wissen
title: The Research Magazine of the University of Potsdam
titleType: Subtitle
Creators: name: University Of Potsdam, Press
Publisher: name: Universität Potsdam
Year: 2019

description: Language is perhaps the most universal tool of human beings. It enables us to express ourselves, to communicate and understand, to help and get help, to create and share togetherness. However, that does not completely capture the value of language. “Language belongs to the character of man,” said the English philosopher Sir Francis Bacon. If you believe the poet Johann Gottfried von Herder, a human is “only a human through language”. Ultimately, this means that we live in our world not with, but in, language. We not only describe our reality by means of language, but language is the device through which we open up the world in the first place. It is always there and shapes and influences us and the way we perceive, analyze, describe and ultimately determine everything around us. Since it is so deeply connected with human nature, it is hardly surprising that our language has always been in the center of academic research – and not only in those fields that bear the name linguistics. Philosophy and media studies, neurology and psychology, computer science and semiotics – all of them are based on linguistic structures and their premises and possibilities. Since July 2017, a scientific network at the University of Potsdam has been working on exactly this interface: the Collaborative Research Center “Limits of Variability in Language” (SFB 1287), funded by the German Research Foundation (DFG). Linguists, computer scientists, psychologists, and neurologists examine where language is or is not flexible. They hope to find out more about individual languages and their connections. In this issue of Portal Wissen, we asked SFB spokeswoman Isabell Wartenburger and deputy spokesman Malte Zimmermann to talk about language, its variability and limits, and how they investigate these aspects. We also look over the shoulders of two researchers who are working on sub-projects: Germanist Heike Wiese and her team examine whether the pandemonium of the many different languages spoken at a weekly market in Berlin is creating a new language with its own rules. Linguist Doreen Georgi embarks on a typological journey around the world comparing about 30 languages to find out if they have common limits. We also want to introduce other research projects at the University of Potsdam and the people behind them. We talk to biologists about biodiversity and ecological dynamics, and the founders of the startup “visionYOU” explain how entrepreneurship can be combined with social responsibility. Other discussions center round the effective production of antibodies and the question of whether the continued use of smartphones will eventually make us speechless. But do not worry: we did not run out of words – the magazine is full of them! Enjoy your reading! The Editors
description: Portal Wissen: The research magazine of the University of Potsdam [Englische Ausgabe], 01/2018
Aging Feynman-Kac Equation
Creators: name: Wang, Wanli
name: Deng, Weihua
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Aging, the process of growing old or maturing, is one of the most widely seen natural phenomena in the world. For the stochastic processes, sometimes the influence of aging can not be ignored. For example, in this paper, by analyzing the functional distribution of the trajectories of aging particles performing anomalous diffusion, we reveal that for the fraction of the occupation time $T_+/t$ of strong aging particles, $\langle (T^+(t)^2)\rangle=\frac{1}{2}t^2$ with coefficient $\frac{1}{2}$, having no relation with the aging time $t_a$ and $α$ and being completely different from the case of weak (none) aging. In fact, we first build the models governing the corresponding functional distributions, i.e., the aging forward and backward Feynman-Kac equations; the above result is one of the applications of the models. Another application of the models is to solve the asymptotic behaviors of the distribution of the first passage time, $g(t_a,t)$. The striking discovery is that for weakly aging systems, $g(t_a,t)\sim t_a^{\fracα{2}}t^{-1-\fracα{2}}$, while for strongly aging systems, $g(t_a,t)$ behaves as $ t_a^{α-1}t^{-α}$.
description: 13 pages, 7 figures
MPEC 2025-D250 : 2024 NN11
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Additional file 1: of Comparative genomics reveals phylogenetic distribution patterns of secondary metabolites in Amycolatopsis species
Creators: name: Adamek, Martina
name: Alanjary, Mohammad
name: Sales-Ortells, Helena
name: Goodfellow, Michael
name: Bull, Alan
name: Winkler, Anika
name: Wibberg, Daniel
name: JĂśrn Kalinowski
name: Ziemert, Nadine
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Supplementary Figures. Figure S1-S13 (PDF 6871Â kb)
Violated Rights in Rural Populations Exposed to Transgenic Soybean Crop
Creators: name: S. Benítez-Leite
name: R. Corvalán
Publisher: name: Zenodo
Year: 2021
Subjects: Violated rights
GMO
soybean crops
farmers
critical epidemiology

description: Introduction: In Latin America the introduction of GMO (Genetically Modified Organisms) involves a risk of harm to human health, to the environment and a violation of human rights in exposed populations. Objective: To investigate risk conditions of pesticide exposure in a population devoted to subsistence farming and surrounded by GMO crops, through the analysis of the fulfillment of State obligations to guarantee basic human rights. Methods: A survey was conducted among local farmers in San Juan, in the Canindeyú Department (Py) in January, 2016 concerning farming practices. The compliance with state obligations was performed by analyzing the National Constitution and the Law of Phytosanitary Control. Results: 43 Settlers were interviewed, out of which, a hundred percent (100%) are dedicated to farming, of which 53,5% (23/43) are dedicated to subsistence farming and 46,5% (20/43) are dedicated to income and subsistence. Their median level of education is 4,9 years. The population is surrounded by monocultures that are close to a 100% of the families, climate conditions are not taken into account, nor are they informed, also they were not trained in agrochemical handling and knowledge. An irregular handling of the proper preservation of recipients was described, also a lack of suitable spray equipment, washing of clothes, and child safety inside their home during massive spraying. Conclusion: There is a risk of permanent exposure to pesticides in a context of a repeated violation of human rights of that population.
Origin of the scatter in the X-ray luminosity of early-type galaxies observed with ROSAT
Creators: name: Matsushita, Kyoko
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Statistical properties of X-ray luminosity and temperature are studied for 52 early-type galaxies based on the ROSAT PSPC data. All of the X-ray luminous galaxies show largely extended emission with a radius of a few times of 10$r_e$, while X-ray faint galaxies do not show such a component. This leads to a division of early-type galaxies into two categories: X-ray extended and X-ray compact galaxies. Except for a few galaxies in dense cluster environments, the luminosity and temperature of X-ray compact galaxies are well explained by a kinematical heating of the gas supplied by stellar mass loss. In contrast, X-ray extended galaxies indicate large scatter in the X-ray luminosity. We discuss that X-ray extended galaxies are the central objects of large potential structures, and the presence and absence of this potential is the main origin of the large scatter in the X-ray luminosity.
description: 35 pages, including 8 figures, Accepted for publication in ApJ
Chern - Simons Gauge Field Theory of Two - Dimensional Ferromagnets
Creators: name: Martina, L.
name: Pashaev, O. K.
name: Soliani, G.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A Chern-Simons gauged Nonlinear Schrödinger Equation is derived from the continuous Heisenberg model in 2+1 dimensions. The corresponding planar magnets can be analyzed whithin the anyon theory. Thus, we show that static magnetic vortices correspond to the self-dual Chern - Simons solitons and are described by the Liouville equation. The related magnetic topological charge is associated with the electric charge of anyons. Furthermore, vortex - antivortex configurations are described by the sinh-Gordon equation and its conformally invariant extension. Physical consequences of these results are discussed.
description: 15 pages, Plain TeX, Lecce, June 1993
Optimised frequency modulation for continuous-wave optical magnetic resonance sensing using nitrogen-vacancy ensembles
Creators: name: El-Ella, Haitham A. R.
name: Ahmadi, Sepehr
name: Wojciechowski, Adam M.
name: Huck, Alexander
name: Andersen, Ulrik L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Magnetometers based on ensembles of nitrogen-vacancy centres are a promising platform for continuously sensing static and low-frequency magnetic fields. Their combination with phase-sensitive (lock-in) detection creates a highly versatile sensor with a sensitivity that is proportional to the derivative of the optical magnetic resonance lock-in spectrum, which is in turn dependant on the lock-in modulation parameters. Here we study the dependence of the lock-in spectral slope on the modulation of the spin-driving microwave field. Given the presence of the intrinsic nitrogen hyperfine spin transitions, we experimentally show that when the ratio between the hyperfine linewidth and their separation is $\gtrsim 1/4$, square-wave based frequency modulation generates the steepest slope at modulation depths exceeding the separation of the hyperfine lines, compared to sine-wave based modulation. We formulate a model for calculating lock-in spectra which shows excellent agreement with our experiments, and which shows that an optimum slope is achieved when the linewidth/separation ratio is $\lesssim 1/4$ and the modulation depth is less then the resonance linewidth, irrespective of the modulation function used.
description: 13 pager and 6 figures
Additional file 3: of Determinants of breast cancer early detection for cues to expanded control and care: the lived experiences among women from Western Kenya
Creators: name: Kisiangani, Joyce
name: Baliddawa, Joyce
name: Marinda, Pamela
name: Mabeya, Hillary
name: Choge, Joseph
name: Adino, Eric
name: Khayeka-Wandabwa, Christopher
Publisher: name: figshare
Year: 2018
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Perceived barriers to early breast cancer screening uptake and treatment as mentioned by FGD participants. (DOCX 18Â kb)
An adaptive grid refinement strategy for the simulation of negative streamers
Creators: name: Montijn, C.
name: Hundsdorfer, W.
name: Ebert, U.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The evolution of negative streamers during electric breakdown of a non-attaching gas can be described by a two-fluid model for electrons and positive ions. It consists of continuity equations for the charged particles including drift, diffusion and reaction in the local electric field, coupled to the Poisson equation for the electric potential. The model generates field enhancement and steep propagating ionization fronts at the tip of growing ionized filaments. An adaptive grid refinement method for the simulation of these structures is presented. It uses finite volume spatial discretizations and explicit time stepping, which allows the decoupling of the grids for the continuity equations from those for the Poisson equation. Standard refinement methods in which the refinement criterion is based on local error monitors fail due to the pulled character of the streamer front that propagates into a linearly unstable state. We present a refinement method which deals with all these features. Tests on one-dimensional streamer fronts as well as on three-dimensional streamers with cylindrical symmetry (hence effectively 2D for numerical purposes) are carried out successfully. Results on fine grids are presented, they show that such an adaptive grid method is needed to capture the streamer characteristics well. This refinement strategy enables us to adequately compute negative streamers in pure gases in the parameter regime where a physical instability appears: branching streamers.
description: 46 pages, 19 figures, to appear in J. Comp. Phys
Complex Visibilities of Cosmic Microwave Background Anisotropies
Creators: name: Ng, Kin-Wang
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the complex visibilities of the cosmic microwave background anisotropies that are observables in interferometric observations of the cosmic microwave background, using the multipole expansion methods commonly adopted in analyzing single-dish experiments. This allows us to recover the properties of the visibilities that is obscured in the flat-sky approximation. Discussions of the window function, multipole resolution, instrumental noise, pixelization, and polarization are given.
description: 22 pages, 1 figure included
Structural (B1 to B8) Phase Transition in MnO under Pressure: Comparison of All-electron and Pseudopotential Approaches
Creators: name: Kolorenc, Jindrich
name: Mitas, Lubos
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We employ the density functional theory to study a structural transition of MnO from B1 (rocksalt) to B8 (NiAs) structures that was observed experimentally at pressures around 100 GPa. We utilize all-electron description as well as norm-conserving pseudopotentials and demonstrate that these two approaches can significantly differ in quantitative predictions. We explicitly show that even small-core pseudopotentials exhibit transferability inaccuracies for quantities sensitive to the energy differences between high- and low-spin polarizations of valence electrons.
description: 5 pages, 3 figures, REVTeX4
Mass Spectrum and Correlation Functions of Nonabelian Quantum Magnetic Monopoles
Creators: name: Marino, E. C.
name: Ramos, R. O.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The method of quantization of magnetic monopoles based on the order-disorder duality existing between the monopole operator and the lagrangian fields is applied to the description of the quantum magnetic monopoles of `t Hooft and Polyakov in the SO(3) Georgi-Glashow model. The commutator of the monopole operator with the magnetic charge is computed explicitly, indicating that indeed the quantum monopole carries $4π/g$ units of magnetic charge. An explicit expression for the asymptotic behavior of the monopole correlation function is derived. From this, the mass of the quantum monopole is obtained. The tree-level result for the quantum monopole mass is shown to satisfy the Bogomolnyi bound ($M_{\rm mon} \geq 4 π\frac{M}{g^2}$) and to be within the range of values found for the energy of the classical monopole solution.
description: 30 pages, PUPT-1403, DART-HEP-93/04, 3 Figures (Feynman macros required)
Nonextensive statistical features of the Polish stock market fluctuations
Creators: name: Rak, R.
name: Drozdz, S.
name: Kwapien, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Astrophysics (astro-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: The statistics of return distributions on various time scales constitutes one of the most informative characteristics of the financial dynamics. Here we present a systematic study of such characteristics for the Polish stock market index WIG20 over the period 04.01.1999 - 31.10.2005 for the time lags ranging from one minute up to one hour. This market is commonly classified as emerging. Still on the shortest time scales studied we find that the tails of the return distributions are consistent with the inverse cubic power-law, as identified previously for majority of the mature markets. Within the time scales studied a quick and considerable departure from this law towards a Gaussian can however be traced. Interestingly, all the forms of the distributions observed can be comprised by the single $q$-Gaussians which provide a satisfactory and at the same time compact representation of the distribution of return fluctuations over all magnitudes of their variation. The corresponding nonextensivity parameter $q$ is found to systematically decrease when increasing the time scales.
description: 14 pages. Physica A in print
title: ADCO, Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Cart. 177 (11 H 289), 197 folios, f. 0104
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2015
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: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0104, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0104, 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
Polarizability calculation of vibrating nanoparticles for intensity of low frequency Raman scattering
Creators: name: Murray, Daniel B.
name: Netting, Caleb H.
name: Mercer, Robin D.
name: Saviot, Lucien
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A new numerical method is introduced for calculating the polarizability of an arbitrary dielectric object with position dependent complex permittivity. Three separate numerical approaches are provided to calculate the dipole moment of a nanoparticle embedded in a dielectric matrix in the presence of an applied electric field. Numerical tests confirm the accuracy of this method when applied to several cases for which an exact solution is available. This method is especially well suited for the calculation of absolute Raman scattering intensities due to acoustic phonons in metallic and dielectric nanoparticles embedded in transparent matrices.
description: Submitted to the Journal of Raman Spectroscopy
A Completely Top-Down Hierarchical Structure in Quantum Mechanics
Creators: name: Aharonov, Yakir
name: Cohen, Eliahu
name: Tollaksen, Jeff
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Can a large system be fully characterized using its subsystems via inductive reasoning? Is it possible to completely reduce the behavior of a complex system to the behavior of its simplest "atoms"? In the following paper we answer these questions on the negative for a specific class of systems and measurements. We begin with simple two-particle example, where strong correlations arise between two apparently empty boxes. This leads to new surprising effects within atomic and electromagnetic systems. A general construction based on pre- and post-selected ensembles is then suggested, where the N-body correlation can be genuinely perceived as a global property, as long as one is limited to preforming a small set of measurements which we term "strictly local". We conclude that within time-symmetric quantum mechanics and under certain boundary conditions, high-order correlations can determine low-order ones, but not vice versa. Moreover, the latter seem to provide no information at all regarding the former. This supports a top-down structure in many-body quantum mechanics.
description: 6 pages, 1 figure, comments are welcome
Spacetime Variable Superstring Vacua
Creators: name: Green, Paul S.
name: Hubsch, Tristan
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In a general superstring vacuum configuration, the `internal' space (sector) varies in spacetime. When this variation is non-trivial only in two space-like dimensions, the vacuum contains static cosmic strings with finite energy per unit length and which is, up to interactions with matter, an easily computed topological invariant. The total spacetime is smooth although the `internal' space is singular at the center of each cosmic string. In a similar analysis of the Wick-rotated Euclidean model, these cosmic strings acquire expected self-interactions. Also, a possibility emerges to define a global time in order to rotate back to the Lorentzian case.
description: 24 pages, harvmac, HUPAPP-93/1
Geometrical Optics of Beams with Vortices: Berry Phase and Orbital Angular Momentum Hall Effect
Creators: name: Bliokh, K. Yu.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider propagation of a paraxial beam carrying the spin angular momentum (polarization) and intrinsic orbital angular momentum (IOAM) in a smoothly inhomogeneous isotropic medium. It is shown that the presence of IOAM can dramatically enhance and rearrange the topological phenomena that previously were considered solely in connection to the polarization of transverse waves. In particular, the appearance of a new-type Berry phase that describes the parallel transport of the beam structure along a curved ray is predicted. We derive the ray equations demonstrating the splitting of beams with different values of IOAM. This is the orbital angular momentum Hall effect, which resembles Magnus effect for optical vortices. Unlike the recently discovered spin Hall effect of photons, it can be much larger in magnitude and is inherent to waves of any nature. Experimental means to detect the phenomena is discussed.
description: 5 pages, 2 figures
Microquasars as heating sources of the intergalactic medium during reionisation of the Universe
Creators: name: Douna, Vanesa M.
name: Pellizza, Leonardo J.
name: Laurent, Philippe
name: Mirabel, I. Félix
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The effect of the primeval sources of radiation and particles on the thermodynamical state of the intergalactic medium during the Epoch of Reionisation is still unclear. In this work, we explore the contribution of electrons accelerated in the jets of high-redshift microquasars to heating and ionising the intergalactic medium. We develop Monte Carlo simulations of the propagation and energy deposition of these electrons as they travel away from their sources. We find that microquasars contribute significantly to heating the intergalactic medium and are effective ionisers only near the galaxies. Their effect on heating is of the same order of magnitude than that of CRs from SNe.
description: 13 pages, 13 figures, accepted for publication in MNRAS
The Star Clusters in the Starburst Irregular Galaxy NGC 1569
Creators: name: Hunter, D. A.
name: O'Connell, R. W.
name: Gallagher, J. S.
name: Smecker-Hane, T. A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine star clusters in the irregular, starburst galaxy NGC 1569 from HST images. In addition to the two known super star clusters, we identify 45 other clusters that are compact but resolved. Integrated UVI colors of the clusters span a large range, and suggest that ages range from 3 Myrs to 1 Gyr. However, most of the clusters were formed at the tail end of the recent starburst. Numerous clusters in addition to the know super star clusters are similar in luminosity to a small globular cluster. We examined the radial surface brightness of four of the clusters. Their half-light radii and core radii are in the range observed in present-day globular clusters. Therefore, conditions that produced the recent starburst have also been those necessary for producing compact, bright star clusters. We examine resolved stars in the outer parts of the two super star clusters. Cluster A is dominated by bright blue stars with a small population of red supergiants. Sub-components A1 and A2 have similar colors and a two-dimensional color map does not offer evidence that one component is dominated by red supergiants and the other not. The contradiction of the presence of red super- giants with Wolf-Rayet stars may instead not be a contradiction at all since there coexistence in a coeval population is not inconsistent with the evolution of massive stars. Cluster B is dominated by red supergiants, and this is confirmed by the presence of the stellar CO absorption feature in an integrated spectrum. The various age indicators are consistent with a picture in which cluster B is of order 10--20 Myrs old, and cluster A is >4-5 Myrs old.
description: To be published in AJ, November 2000
Additional file 2: of Using in vivo oxidation status of one- and two-component redox relays to determine H2O2 levels linked to signaling and toxicity
Creators: name: Domènech, Alba
name: Ayté, José
name: Antunes, Fernando
name: Hidalgo, Elena
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Figure S2. Kinetics of OxyR and Tpx1 oxidation. a In cells deficient in Tpx1 or Trx1, HA-OxyR oxidizes at low concentrations of peroxides. Aerobic or anaerobic cultures of strains AD29 (WT), AD61 (Δtrx1), and AD36 (Δtpx1) carrying an integrative sty1 promoter-driven HA-oxyR gene were treated or not with the indicated concentrations of H2O2 for the times indicated. TCA extracts were analyzed as in Fig. 2a. b Cultures of strain AD29 (WT) were treated or not with 20, 50, or 100 μM H2O2 for the times indicated. TCA extracts were analyzed as in Fig. 2a, using antibodies against Tpx1 (ox. Tpx1 dimer is the upper band in the panels; red. Tpx1 monomer is the lower band in the panels). (PDF 476 kb)
title: A new interior-point boundary projection method for solving nonlinear groundwater pollution control problems
Creators: name: Mulligan, AE
name: Ahlfeld, DP
Publisher: name: University of Massachusetts Amherst
Year: 2002

description: A new interior-point algorithm for solving the groundwater-pollution-control design problem is presented. The algorithm requires that the objective function is differentiable in the interior region. For minimization problems with nonlinear constraints and a concave objective function, the technique is shown to be similar to an active set gradient-projection method, where the tangent of the boundary between feasible and infeasible solutions is used to determine a search direction. In this new method, however, the search direction is translated into the interior space of the feasible region. This process allows progress to be made toward improving the objective function while remaining in the feasible space and ultimately converges to a stationary point. Although the solution technique was developed to solve a groundwater control formulation with a linear objective function and nonlinear constraints, the method has been successfully applied to an unconstrained nonconcave/nonconvex formulation and may be applicable to a wide variety of problems.
title: Evaluation 2 projet MATMOS 2014
Creators: name: LabexMed
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2019

description: Évaluation du projet MATMOS-Matériaux des mosaïstes-, réalisée en 2014.
Thouless-Anderson-Palmer equation and self-consistent signal-to-noise analysis for the Hopfield model with three-body interaction
Creators: name: Ichiki, Akihisa
name: Shiino, Masatoshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The self-consistent signal-to-noise analysis (SCSNA) is an alternative to the replica method for deriving the set of order parameter equations for associative memory neural network models and is closely related with the Thouless-Anderson-Palmer equation (TAP) approach. In the recent paper by Shiino and Yamana the Onsager reaction term of the TAP equation has been found to be obtained from the SCSNA for Hopfield neural networks with 2-body interaction. We study the TAP equation for an associative memory stochastic analog neural network with 3-body interaction to investigate the structure of the Onsager reaction term, in connection with the term proportional to the output characteristic to the SCSNA. We report the SCSNA framework for analog networks with 3-body interactions as well as a novel recipe based on the cavity concept that involves two cavities and the hybrid use of the SCSNA to obtain the TAP equation.
description: 4 pages
Bonus--malus systems with different claim types and varying deductibles
Creators: name: Ragulina, Olena
Publisher: name: arXiv
Year: 2017
Subjects: subject: Risk Management (q-fin.RM)
subject: Probability (math.PR)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: The paper deals with bonus-malus systems with different claim types and varying deductibles. The premium relativities are softened for the policyholders who are in the malus zone and these policyholders are subject to per claim deductibles depending on their levels in the bonus-malus scale and the types of the reported claims. We introduce such bonus-malus systems and study their basic properties. In particular, we investigate when it is possible to introduce varying deductibles, what restrictions we have and how we can do this. Moreover, we deal with the special case where varying deductibles are applied to the claims reported by policyholders occupying the highest level in the bonus-malus scale and consider two allocation principles for the deductibles. Finally, numerical illustrations are presented.
description: Published at http://dx.doi.org/10.15559/17-VMSTA80 in the Modern Stochastics: Theory and Applications (https://www.i-journals.org/vtxpp/VMSTA) by VTeX (http://www.vtex.lt/)