cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Developing a novel quantitative framework for business continuity planning
Creators: name: Hojat Rezaei Soufi
name: S. Ali Torabi
name: Sahebjamnia, Navid
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Today’s competitive and turbulent environment persuades every organisation to implement a business continuity management system (BCMS) for dealing with disruptive incidents such as earthquake, flood, and terrorist attacks. Within a BCMS, effective and efficient business continuity plans (BCPs) must be provided to ensure the continuity of organisation’s key products. This study develops a novel approach to select the most appropriate BCPs which can meet the business continuity key measures. First, a risk assessment process is conducted to define the disruptive incidents for which the organisation should have suitable BCPs. Then, two different possibilistic programming models including hard and soft BCP selection models are developed to determine appropriate BCPs under epistemic uncertainty of input data. These models aim to maximise the resilience level of the organisation while minimising the establishment cost of selected BCPs.‏ Finally, a real case study is provided whose results demonstrate the applicability and usefulness of the proposed approach.
Yangian Symmetry of Long-Range gl(N) Integrable Spin Chains
Creators: name: Beisert, Niklas
name: Erkal, Denis
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: An interesting type of spin chain has appeared in the context of the planar AdS/CFT correspondence: It is based on an integrable nearest-neighbor spin chain, and it is perturbatively deformed by long-range interactions which apparently preserve the integrable structure. Similar models can be constructed by demanding the existence of merely one conserved local charge. Although the latter is not a sufficient integrability condition in general, the models often display convincing signs of full integrability. Here we consider a class of long-range spin chains with spins transforming in the fundamental representation of gl(N). For the most general such model with one conserved local charge we construct a conserved Yangian generator and show that it obeys the Serre relations. We thus provide a formal proof of integrability for this class of models.
description: 27 pages, v2: minor changes, references added, figures updated, v3: minor corrections, references added, to appear in JSTAT
Joint Optimization Framework for Learning with Noisy Labels
Creators: name: Tanaka, Daiki
name: Ikami, Daiki
name: Yamasaki, Toshihiko
name: Aizawa, Kiyoharu
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Deep neural networks (DNNs) trained on large-scale datasets have exhibited significant performance in image classification. Many large-scale datasets are collected from websites, however they tend to contain inaccurate labels that are termed as noisy labels. Training on such noisy labeled datasets causes performance degradation because DNNs easily overfit to noisy labels. To overcome this problem, we propose a joint optimization framework of learning DNN parameters and estimating true labels. Our framework can correct labels during training by alternating update of network parameters and labels. We conduct experiments on the noisy CIFAR-10 datasets and the Clothing1M dataset. The results indicate that our approach significantly outperforms other state-of-the-art methods.
description: To appear at CVPR 2018 (poster), including supplementary material
HB Morphology and Age Indicators for Metal-Poor Stellar Systems with Age in the Range of 1 to 20 Gyr
Creators: name: Caputo, F.
name: Degl'Innocent, S.
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Isochrone computations and horizontal branch (HB) models for Y(MS)=0.23 and two values of Z (0.0001, 0.0004)are used to derive constraints on the age indicators and HB morphology of metal-poor clusters with age t (in Gyrs) in the range of 1< t < 20.It is found that for fixed metallicity the luminosity L(3.83) of the zero age horizontalbranch (ZAHB) at the RR Lyrae gap depends on age and that the difference in visual magnitude between main sequence turn-off (TO) and ZAHB may be calibrated in terms of age and metallicity. The results of synthetic HB computations show that at fixed metallicity the mean luminosity of RR Lyraes depends on HB morphology, as well as that the mean luminosity of purely red horizontal branches depends on the age and amount of mass loss during the red giant phase. Such features should be properly taken into account when the cluster age is derived from the observed difference in magnitude between main sequence TO and actual horizontal branch (rather than ZAHB). Moreover, it is shown that the observed HB morphology provides us with an easy estimate of the upper limit of the cluster age. Some useful constraints to the cluster metallicity could be also derived.
description: postscript file of 19 pages plus 8 tables,rep. 2, The tex file and the 18 not postscript figures are available upon request at scilla@vaxfe.fe.infn.it,rep. 2
Clients
Creators: name: Gallagher, James
name: Potter, Nathan
name: West, Patrick
Publisher: name: Zenodo
Year: 2007

description: This presentation was part of a 2-day workshop provided for the Australian Bureau of Meteorology during 15-16 October 2007. The workshop targets system administrators whose task is to setup a data service for interactive users, batch processes, and high level web services, that will access netcdf, hdf, or freeform data in a file system or SQL data in a database. The workshop provides them with the information they need to install and configure Hyrax along with some background on available clients so they can test their servers and give basic advice to users.

Summary of the slide deck: 

The slide deck covers various aspects of accessing data with DAP (Data Access Protocol), client options, demonstrations, and strategies for finding data:

Accessing Data with DAP: It introduces different client options, including web browsers, graphical clients like ncBrowse, command-line clients such as getdap, and custom clients developed in various programming languages.

Using a Graphical Client: A walkthrough of using the OPeNDAP Data Connector (ODC) is provided, illustrating how to search for, access, and plot data using a graphical interface.

Using a Command-line Client: Demonstrates using Matlab and NCO (NetCDF Operators), highlighting how command-line clients are used to move data, create custom interfaces, and perform dataset-specific processing.

NetCDF Operators (NCO): Explains how NCO, a Unix command-line client, utilizes the netCDF client library to interact with a DAP server and manipulate data.

Finding Data: Discusses various methods for locating data, including the OPeNDAP Data Set List, GCMD (Global Change Master Directory), TPAC (Terrestrial and Planetary Atmospheres Collection), Google, and THREDDS catalogs, noting differences in their approach and maintenance.

Common Features: Highlights the active community involvement in building data catalogs and the distinction between static documents and crawlers for data discovery.

Differentiating Features: Compares features of data location methods like Google, TPAC, static lists, GCMD, and THREDDS catalogs, emphasizing factors like metadata requirements, maintenance, and quality.

Finding Data Summary: Summarizes the complexity of data location strategies, emphasizing the need for diverse approaches and the importance of active maintenance in ensuring data accessibility.

Overall, the slide deck provides insights into accessing, manipulating, and discovering data using various DAP clients and strategies, catering to different user needs and preferences.
Emergence of Coherent Long Wavelength Oscillations After a Quench: Application to QCD
Creators: name: Rajagopal, Krishna
name: Wilczek, Frank
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Condensed Matter (cond-mat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: To model the dynamics of the chiral order parameter in a far from equilibrium phase transition, we consider quenching in the O(4) linear sigma model. We argue, and present numerical evidence, that in the period immediately following the quench long wavelength modes of the pion field are amplified. This results in large regions of coherent pion oscillations, and could lead to dramatic phenomenological consequences in heavy ion collisions.
description: 18 pages, 4 figures included (uuencoded and compressed); uses phyzzx; PUPT-1389, IASSNS-HEP-93/16
Towards Sub-Quadratic Diameter Computation in Geometric Intersection Graphs
Creators: name: Bringmann, Karl
name: Kisfaludi‑Bak, Sándor
name: Künnemann, Marvin
name: Nusser, André
name: Parsaeian, Zahra
name: Goaoc, Xavier
name: Kerber, Michael
Publisher: name: Schloss Dagstuhl - Leibniz-Zentrum für Informatik (LZI)
Year: 2022
Subjects: Hardness in P
Geometric Intersection Graph
Graph Diameter
Orthogonal Vectors
Hyperclique Detection

description: We initiate the study of diameter computation in geometric intersection graphs from the fine-grained complexity perspective. A geometric intersection graph is a graph whose vertices correspond to some shapes in d-dimensional Euclidean space, such as balls, segments, or hypercubes, and whose edges correspond to pairs of intersecting shapes. The diameter of a graph is the largest distance realized by a pair of vertices in the graph.
Computing the diameter in near-quadratic time is possible in several classes of intersection graphs [Chan and Skrepetos 2019], but it is not at all clear if these algorithms are optimal, especially since in the related class of planar graphs the diameter can be computed in $𝒪̃(n^{5/3})$ time [Cabello 2019, Gawrychowski et al. 2021].
In this work we (conditionally) rule out sub-quadratic algorithms in several classes of intersection graphs, i.e., algorithms of running time $𝒪(n^{2-δ})$ for some $δ > 0$. In particular, there are no sub-quadratic algorithms already for fat objects in small dimensions: unit balls in $ℝ^3$ or congruent equilateral triangles in $ℝ^2$. For unit segments and congruent equilateral triangles, we can even rule out strong sub-quadratic approximations already in $ℝ^2$. It seems that the hardness of approximation may also depend on dimensionality: for axis-parallel unit hypercubes in $ℝ^{12}$, distinguishing between diameter 2 and 3 needs quadratic time (ruling out $(3/2-ε)$- approximations), whereas for axis-parallel unit squares, we give an algorithm that distinguishes between diameter 2 and 3 in near-linear time.
Note that many of our lower bounds match the best known algorithms up to sub-polynomial factors. Ultimately, this fine-grained perspective may enable us to determine for which shapes we can have efficient algorithms and approximation schemes for diameter computation.
Stationary Reflection
Creators: name: Hayut, Yair
name: Unger, Spencer
Publisher: name: arXiv
Year: 2018
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03E35, 03E55

description: We improve the upper bound for the consistency strength of stationary reflection at successors of singular cardinals.
Can the Couplings in the Fermion-Higgs Sector of the Standard Model be Strong?
Creators: name: Bock, Wolfgang
name: Frick, Christoph
name: Smit, Jan
name: Vink, Jeroen C.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results for the renormalized quartic self-coupling $λ_R$ and the Yukawa coupling $y_R$ in a lattice fermion-Higgs model with two SU(2)$_L$ doublets, mostly for large values of the bare couplings. One-component (`reduced') staggered fermions are used in a numerical simulation with the Hybrid Monte Carlo algorithm. The fermion and Higgs masses and the renormalized scalar field expectation value are computed on $L^3 24$ lattices, where $L$ ranges from $6$ to $16$. In the scaling region these quantities are found to have a $1/L^2$ dependence, which is used to determine their values in the infinite volume limit. We then calculate the $y_R$ and $λ_R$ from their tree level definitions in terms of the masses and renormalized scalar field expectation value, extrapolated to infinite volume. The scalar field propagators can be described for momenta up to the cut-off by one fermion loop renormalized perturbation theory and the results for $λ_R$ and $y_R$ come out to be close to the tree level unitarity bounds. There are no signs that are in contradiction with the triviality of the Yukawa and quartic self-coupling.
description: 36 pages + 12 postscript figures (appended), Amsterdam ITFA 92-23, HLRZ Juelich 92-58, UCSD/PTH 92-38
A Generalization of A Leibniz Geometrical Theorem
Creators: name: Bencze, Mihaly
name: Popovici, Florin
name: Smarandache, Florentin
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 51F20

description: In this article we present a generalization of a Leibniz's geometrical theorem and an application of it.
description: 5 pages
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Cart. 192 (11 H 77), 295 folios, f. 0010r
Creators: name: de la Côte d'Or, Archives départementales
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0010r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0010r, 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
Constrained dynamics of two interacting relativistic particles in the Faddeev-Jackiw symplectic framework
Creators: name: Rodríguez-Tzompantzi, Omar
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Faddeev-Jackiw symplectic formalism for constrained systems is applied to analyze the dynamical content of a model describing two massive relativistic particles with interaction, which can also be interpreted as a bigravity model in one dimension. We systematically investigate the nature of the physical constraints, for which we also determine the zero-modes structure of the corresponding symplectic matrix. After identifying the whole set of constraints, we find out the transformation laws for all the set of dynamical variables corresponding to gauge symmetries, encoded in the remaining zero-modes. In addition, we use an appropriate gauge-fixing procedure, the conformal gauge, to compute the quantization brackets (Faddeev-Jackiw brackets) and also obtain the number of physical degree of freedom. Finally, we argue that this symplectic approach can be helpful for assessing physical constraints and understanding the gauge structure of theories of interacting spin-2 fields.
Physically Detached "Compact Groups"
Creators: name: Hernquist, Lars
name: Katz, Neal
name: Weinberg, David
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A small fraction of galaxies appear to reside in dense compact groups, whose inferred crossing times are much shorter than a Hubble time. These short crossing times have led to considerable disagreement about the dynamical state of these systems. We suggest that many of the observed groups are not physically bound but are chance projections of galaxies well-separated along the line of sight. Unlike earlier similar proposals, ours does not require that the galaxies in the compact group be members of a more diffuse, but physically bound entity. The probability of physically separated galaxies projecting into an apparent compact group is non-negligible if most galaxies are distributed, as observed, in thin filaments. We illustrate this general point with a specific example: a simulation of a cold dark matter universe, in which hydrodynamic effects are included to identify galaxies. The simulated galaxy distribution is filamentary, and end-on views of these filaments produce apparent galaxy associations that have sizes and velocity dispersions similar to those of observed compact groups. The frequency of such projections can explain the observed space-density of groups in the Hickson catalog. We discuss the implications of our proposal for the formation and evolution of groups and elliptical galaxies. The proposal can be tested by using redshift-independent distance estimators to measure the line-of-sight spatial extent of nearby compact groups.
description: 18 pp of uu-postscript w/ figs, replaced because of apparent transmission error in original; submitted to ApJ, preprint IASSNS-AST 94/38
Ferromagnetic Peierls insulator state in $\mathit{A}$Mg$_4$Mn$_6$O$_{15}$ ($\mathit{A}$ = K, Rb, Cs)
Creators: name: Yamaguchi, T.
name: Sugimoto, K.
name: Ohta, Y.
name: Tanaka, Y.
name: Sato, H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using the density-functional-theory based electronic structure calculations, we study the electronic state of recently discovered mixed-valent manganese oxides $A$Mg$_4$Mn$_6$O$_{15}$ ($A=$ K, Rb, Cs), which are fully spin-polarized ferromagnetic insulators with a cubic crystal structure. We show that the system may be described as a three-dimensional arrangement of the one-dimensional chains of a $2p$ orbital of O and a $3d$ orbital of Mn running along the three axes of the cubic lattice. We thereby argue that in the ground state the chains are fully spin polarized due to the double-exchange mechanism and are distorted by the Peierls mechanism to make the system insulating.
description: 5 pages, 5 figures
As tecnologias da informação e comunicação nos labirintos da prática educativa
Creators: name: Fávero, Altair Alberto
name: Possel, Bianca
Publisher: name: figshare
Year: 2018
Subjects: subject: 80706 Librarianship
subject: FOS: Media and communications
subject: Library and Information Studies

description: Trata-se de uma resenha da obra As TICs nos Labirintos da Prática Educativa da autoria de Arnaldo Nogaro e Elisabete Cerutti publicada em 2016 pela Editora CRV de Curitiba. A obra se divide em 7 capítulos, além das considerações finais, sendo eles: Capítulo 1 - Aprender e ensinar: o trabalho do professor na sociedade complexa e cibercultural; Capítulo 2 - Mudanças antropológicas decorrentes do uso das TICs: o que há ainda por saber e por vir?; Capítulo 3 - As TICs como aporte para uma prática educativa orientada para a pesquisa; Capítulo 4 - Aprendizado para uso das TICs como ferramentas para a prática da pesquisa em educação; Capítulo 5 - Reflexões sobre a formação de professores na cibercultura; Capítulo 6 - As tecnologias digitais e a aula: tendências às práticas educativas na cibercultura; Capítulo 7 - As práticas interativas no ensino superior: entre a pedagogia da parceria e o ensino híbrido; E as considerações finais - Entre os labirintos da educação e das tecnologias: caminhos possíveis e reflexões necessárias.
A model for calorimetric measurements in an open quantum system
Creators: name: Donvil, Brecht
name: Muratore-Ginanneschi, Paolo
name: Pekola, Jukka P.
name: Schwieger, Kay
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the experimental setup proposed in [New J. Phys., 15, 115006 (2013)] for calorimetric measurements of thermodynamic indicators in an open quantum system. As theoretical model we consider a periodically driven qubit coupled with a large yet finite electron reservoir, the calorimeter. The calorimeter is initially at equilibrium with an infinite phonon bath. As time elapses, the temperature of the calorimeter varies in consequence of energy exchanges with the qubit and the phonon bath. We show how under weak coupling assumptions, the evolution of the qubit-calorimeter system can be described by a generalized quantum jump process including as dynamical variable the temperature of the calorimeter. We study the jump process by numeric and analytic methods. Asymptotically with the duration of the drive, the qubit-calorimeter attains a steady state. In this same limit, we use multiscale perturbation theory to derive a Fokker--Planck equation governing the calorimeter temperature distribution. We inquire the properties of the temperature probability distribution close and at the steady state. In particular, we predict the behavior of measurable statistical indicators versus the qubit-calorimeter coupling constant.
description: 16 pages, 8 figures
title: Dissemina Lab
title: novos enfoques de gênero e raça na mídia contemporânea
titleType: Subtitle
Creators: name: Rodrigues, Geisa
name: Santos, Pedro Henrique Conceição dos
name: Paulla, Monique
Publisher: name: ICNOVA, Faculdade de Ciências Sociais e Humanas, Universidade NOVA de Lisboa
Year: 2021

description: Este artigo investiga o papel da Mídia na configuração das relações raciais brasileiras no contexto contemporâneo. Partindo do trabalho desenvolvido no grupo de estudos Dissemina Lab, composto por alunes negres da Universidade Federal Fluminense, reforça a importância da formação de profissionais na área da Comunicação Social nas universidades, com um olhar crítico sobre a participação da Mídia na estruturação das relações raciais brasileiras. A partir da categoria de 'neurose cultural brasileira' (Gonzalez [1983] 2020a), entende-se que o racismo midiático é recalcado e instaura, em seu discurso, relações de poder que submetem pessoas negras à exclusão, em um regime racializado de representação (Hall 2016). Através da análise de alguns exemplos contemporâneos, foram observadas diferentes estratégias de ocultamento do racismo na mídia. Palavras-chave: Dissemina Lab; racismo midiático; racismo recalcado; discurso e poder; mulheres negras
description: Rodrigues, Geisa, Santos, Pedro Henrique Conceição dos, Paulla, Monique. 2021. Dissemina Lab – novos enfoques de gênero e raça na mídia contemporânea. Revista de Comunicação e Linguagens 54: 84-103. ISSN 2183-7198
Gamificação como um processo de mudança no estilo de ensino aprendizagem no ensino superior: um relato de experiência
Creators: name: Thaís Branquinho Oliveira Fragelli
Publisher: name: figshare
Year: 2018
Subjects: subject: 80706 Librarianship
subject: FOS: Media and communications
subject: Library and Information Studies

description: Debates atuais têm enfatizado a mudança do comportamento do discente em relação ao seu processode aprendizagem. Observa-se que o estudante atual tem a necessidade de informações em um curto espaço detempo e, por muitas vezes, se dispersam com facilidade em contextos de aulas exclusivamente tradicionais e expositivas. Considerando esse aspecto, o presente trabalho tem o objetivo de relatar a experiência com o uso da gamificação em uma turma de 4o e outra de 7o semestres da grade curricular obrigatória e, em uma turma de disciplina optativa do curso de graduação em fisioterapia, participando assim 90 alunos, na tentativa deaproximar o aluno do conteúdo, motivar o aprendizado e tornar o ambiente da sala de aula mais próximo e maisatrativo ao estudante. Ao final das aulas foram aplicados questionários para que o estudante pudesse avaliar aexperiência. A avaliação realizada pelos estudantes relacionou-se a relatos de maior motivação, e o despertar do interesse para um aprofundamento maior do conteúdo.
Solar cycle dependence of spatial correlation in the solar wind
Creators: name: Wicks, R. T.
name: Chapman, S. C.
name: Dendy, R. O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Geophysics (physics.geo-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We investigate the spatial correlation properties of the solar wind using simultaneous observations by the ACE and WIND spacecraft. We use mutual information as a nonlinear measure of correlation and compare this to linear correlation. We find that the correlation lengthscales of fluctuations in density and magnetic field magnitude vary strongly with the solar cycle, whereas correlation lengths of fluctuations in B field components do not. We find the correlation length of |B| ~ 120 Re at solar minimum and ~ 270 Re at maximum and the correlation length of density ~ 75 Re at minimum and ~ 170 Re at minimum. The components of the B field have correlation lengths ~ correlation length |B| at minimum.
description: 4 pages, 4 figures, will be presented at Fall AGU 2007
Collection of polar self-propelled particles with a modified alignment interaction
Creators: name: Pattanayak, Sudipta
name: Mishra, Shradha
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We study the disorder-to-order transition in a collection of polar self-propelled particles interacting through a distance dependent alignment interaction. Strength of the interaction, $a^{d}$ ($00$, the system shows a transition from a disordered to an ordered state as a function of noise strength. We calculate the critical noise strength, $η_c(a)$ for different $a$ and compare it with the mean-field result. Nature of the disorder-to-order transition continuously changes from discontinuous to continuous with decreasing $a$. We numerically estimate tri-critical point $a_{TCP}$ at which the nature of transition changes from discontinuous to continuous. The density phase separation is large for ${\it a}$ close to unity, and it decays with decreasing $a$. We also write the coarse-grained hydrodynamic equations of motion for general ${\it a}$, and find that the homogeneous ordered state is unstable to small perturbation as ${\it a}$ approaches to $1$. The instability in the homogeneous ordered state is consistent with the large density phase separation for ${\it a}$ close to unity.
description: 17 pages and 7 figures
Time-dependent correlation functions in a one-dimensional asymmetric exclusion process
Creators: name: Schuetz, Gunter
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study a one-dimensional anisotropic exclusion process describing particles injected at the origin, moving to the right on a chain of $L$ sites and being removed at the (right) boundary. We construct the steady state and compute the density profile, exact expressions for all equal-time n-point density correlation functions and the time-dependent two-point function in the steady state as functions of the injection and absorption rates. We determine the phase diagram of the model and compare our results with predictions from dynamical scaling and discuss some conjectures for other exclusion models.
description: LATEX-file, 32 pages, Weizmann preprint WIS/93/01/Jan-PH
STREAMFINDER I: A New Algorithm for detecting Stellar Streams
Creators: name: Malhan, Khyati
name: Ibata, Rodrigo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have designed a powerful new algorithm to detect stellar streams in an automated and systematic way. The algorithm, which we call the STREAMFINDER, is well suited for finding dynamically cold and thin stream structures that may lie along any simple or complex orbits in Galactic stellar surveys containing any combination of positional and kinematic information. In the present contribution we introduce the algorithm, lay out the ideas behind it, explain the methodology adopted to detect streams and detail its workings by running it on a suite of simulations of mock Galactic survey data of similar quality to that expected from the ESA/Gaia mission. We show that our algorithm is able to detect even ultra-faint stream features lying well below previous detection limits. Tests show that our algorithm will be able to detect distant halo stream structures $>10^{\circ}$ long containing as few as $\sim 15$ members ($Σ_{\rm G} \sim 33.6\, {\rm mag \, arcsec^{-2}}$) in the Gaia dataset.
description: 16 pages, 13 figures, accepted for publication in MNRAS
AI's Impact on Traditional Software Development
Creators: name: Madupati, Bhanuprakash
Publisher: name: arXiv
Year: 2025
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: I.2
subject: 97P40

description: The application of artificial intelligence (AI) has brought key shifts in conventional tactical software development, including code generation, testing and debugging, and deployment. Waterfall and Agile development approaches, which have been used for a long time, also widely employ manual and well-planned steps. However, with the help of automated tools and models such as OpenAI Codex and GPT-4, many aspects of the Software Development Life Cycle (SDLC) have been made possible. This paper examines the technical aspect of integrating AI into prior traditional software development life cycle methodologies, emphasizing code automation, intelligent testing frameworks, AI-based debugging, and continuous integration and deployment pipelines. The analysis is also based on the advantages of utilizing AI for optimizations in efficiency, accuracy, and development speed alongside issues like over-dependence on AI, ethical questions, and technical constraints. Based on the case and example given in this paper, it is clearly shown that the self-improvement of AI in software development makes the process more dynamic, autonomous, and optimized.
description: 10 Pages , 5 figures
Uma instituição de ensino superior na formação de professores: uma metáfora construída por dentro
Creators: name: Duarte, Pedro
name: Diogo, Fernando
Publisher: name: figshare
Year: 2018
Subjects: subject: 80706 Librarianship
subject: FOS: Media and communications
subject: Library and Information Studies

description: O presente trabalho visa, através da análise de 32 inquéritos, verificar a possibilidade de construiruma metáfora explicativa, tendo por base a perspectiva dos inquiridos. Pretende-se, mais do que dar uma visãoexterna da Instituição do Ensino Superior de Formação de Professores em análise, perceber qual é a perspectivados diferentes elementos que a compõem. Deste modo, na fase inicial, optou-se por, sumariamente, explorar asvárias perspectivas e visões possíveis da escola e das organizações educativas. Para desenvolver esse processo,utilizaram-se os modelos/ metáforas tradicionais de análise das organizações. Numa fase posterior, exploram-seos dados resultantes dos inquéritos para verificar que tendências significativas poderiam servir de base para a(re)construção de uma metáfora explicativa do funcionamento da Instituição do Ensino Superior de Formação de Professores estudada. A análise, tendo em conta o número de elementos da amostra e o instrumento de recolha de dados utilizado, foi, no seu essencial, sustentada numa perspectiva quantitativa. Na fase final, e face aos dois aspetos anteriores, propõe-se uma metáfora que seja capaz de explicar, tomando por base a perspectiva dos inquiridos, a forma como a Instituição de Ensino Superior de Formação de Professores se estrutura, organiza e funciona: A Escola como Casa na Árvore.
The Efficacy of Calcium Supplementation for the treatment of Premenstrual disorders: A systematic Review and Meta-analysis Protocol
Creators: name: Radi, Ibrahim
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 320221
subject: Psychiatry (incl. psychotherapy)
classificationCode: 321502
subject: Obstetrics and gynaecology

description: This meta-analysis will include studies investigating the effect of calcium supplementation of at least 500 mg alone or in combination with other vitamins or minerals in any formulation or other non-pharmacological therapies in premenstrual disorders.
Hadron Mass Predictions of the Valence Approximation to Lattice QCD
Creators: name: Butler, F.
name: Chen, H.
name: Sexton, J.
name: Vaccarino, A.
name: Weingarten, D.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We evaluate the infinite volume, continuum limits of eight hadron mass ratios predicted by lattice QCD with Wilson quarks in the valence (quenched) approximation. Each predicted ratio differs from the corresponding observed value by less than 6\%.
description: 13 pages of Latex + 2 PostScript files attached, IBM/HET 92-3
Spin asymmetry at large x_F and k_T
Creators: name: Jarvinen, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We suggest that the large single spin asymmetries observed at high momentum fractions x_F and transverse momenta k_T of the pion in p^\uparrow p -> π(x_F,k_T)+X arise from the coherence of the soft interactions with the hard parton scattering process. Such coherence can be maintained if x_F -> 1 as k_T -> \infty, while k_T^2(1-x_F) ~ Λ_{QCD}^2 stays fixed. Analogous coherence effects have been seen experimentally in the Drell-Yan process at high x_F. We find that the p^\uparrow p -> πX production amplitudes have large dynamic phases and that helicity flip contributions are unsuppressed in this limit, giving rise to potentially large single spin asymmetries.
description: 3 pages, 1 figure. Talk given at EPS HEP 2007, Manchester
First Order Inflation in General Relativity
Creators: name: Wands, David
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I give a general formulation of the constraints on models of inflation ended by a first order phase transition arising from the requirement that they do not produce too many large (observable) true vacuum voids -- the `big bubble problem'. It is shown that this constraint can be satisfied by a simple model in Einstein gravity -- a variant of `hybrid' or `false vacuum' inflation. (Talk presented at `Birth of the Universe' workshop Rome, May 1994)
description: 4 pages, plain LaTeX, 2 figures available on request from author, SUSSEX-AST-94/7-1
Cosmological aspects of the Eisenhart-Duval lift
Creators: name: Cariglia, M.
name: Galajinsky, A.
name: Gibbons, G. W.
name: Horvathy, P. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A cosmological extension of the Eisenhart-Duval metric is constructed by incorporating a cosmic scale factor and the energy-momentum tensor into the scheme. The dynamics of the spacetime is governed the Ermakov-Milne-Pinney equation. Killing isometries include spatial translations and rotations, Newton--Hooke boosts and translation in the null direction. Geodesic motion in Ermakov-Milne-Pinney cosmoi is analyzed. The derivation of the Ermakov-Lewis invariant, the Friedmann equations and the Dmitriev-Zel'dovich equations within the Eisenhart--Duval framework is presented.
description: Minor corrections and precisions, a couple of references added. 34 pages, 3 figures. To be published in European Physical Journal C
Aspherical Properties of Hydrodynamics and Nucleosynthesis in Jet-induced Supernovae
Creators: name: Tominaga, Nozomu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Jet-induced supernovae (SNe) have been suggested to occur in gamma-ray bursts (GRBs) and highly-energetic SNe (hypernovae). I investigate hydrodynamical and nucleosynthetic properties of the jet-induced explosion of a population III $40_\odot$ star with a two-dimensional special relativistic hydrodynamical code. The abundance distribution after the explosion and the angular dependence of the yield are obtained for the models with high and low energy deposition rates $\dot{E}_{\rm dep}=120\times10^{51} {\rm ergs s^{-1}}$ and $1.5\times10^{51} {\rm ergs s^{-1}}$. The ejection of Fe-peak products and the fallback of unprocessed materials in the jet-induced SNe account for the abundance patterns of the extremely metal-poor (EMP) stars. It is also found that the peculiar abundance pattern of a Si-deficient metal-poor star HE 1424--0241 is reproduced by the angle-delimited yield for $θ=30^\circ-35^\circ$ of the model with $\dot{E}_{\rm dep}=120\times10^{51} {\rm ergs s^{-1}}$. Furthermore, I compare the yield of the jet-induced explosion with that of the spherical explosion and confirm the ejection and fallback in the jet-induced explosion is almost equivalent to the "mixing-fallback" in spherical explosions. In contrast to the spherical models, however, the high-entropy environment is realized in the jet-induced explosion and thus [(Sc, Ti, V, Cr, Co, Zn)/Fe] are enhanced. The enhancements of [Sc/Fe] and [Ti/Fe] improve agreements with the abundance patterns of the EMP stars.
description: 12 pages, 11 figures. Accepted for publication in the Astrophysical Journal
The Coleman-Weinberg Mechanism and First Order Phase Transitions
Creators: name: Shen, Yue
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Revised and reduced the size of the text. Removed figure 2 in previous text. So, old figure 3 and 4 become new figure 2 and 3, respectively. Added figure 4 for first order phase transition observation in the strong coupling region. Postscript files for the figures are available upon request. To be published in Phys. Lett. B.
description: 8 pages, 4 figures. BUHEP-93-5, hep-lat/9303014
Quark model estimate of hidden-charm pentaquark resonances
Creators: name: Hiyama, Emiko
name: Hosaka, Atsushi
name: Oka, Makoto
name: Richard, Jean-March
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A quark model, which reproduces the ground-state mesons and baryons, i.e., the threshold energies, is applied to the $qqqc\bar c$ configurations, where $q$ is a light quark and~$c$ the charmed quark. In the calculation, several open channels are explicitly included such as $\Jpsi +N$, $η_c+N$, $Λ_c +D$, etc. To distinguish genuine resonances and estimate their width, we employ Gaussian Expansion Method supplemented by the real scaling method (stabilization). No resonance is found at the energies of the $P_c(4380)$ and $P_c(4450)$ pentaquarks. On the other hand, there is a sharp resonant state at 4690\,MeV with $J=1/2^-$ state and another one at 4920\,MeV with $J=3/2^-$ state, which have a compact structure.
description: 9 pages, 9 figures
Calculating the Isgur-Wise Function on the Lattice
Creators: name: Bernard, Claude
name: Shen, Yue
name: Soni, Amarjit
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the Isgur-Wise function by measuring the heavy-heavy meson transition matrix element on the lattice. The standard Wilson action is used for both the heavy and light quarks. Our first numerical results are presented.
description: 4 pages, 1 postscript figure attached
SU(2) meets SU(3) in lattice-Landau-gauge gluon and ghost propagators
Creators: name: Cucchieri, A.
name: Mendes, T.
name: Oliveira, O.
name: Silva, P. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A comparative study of the lattice Landau gauge gluon and ghost propagators for SU(2) and SU(3) pure Yang-Mills theories is carried out. The data were specially produced with equivalent lattice parameters to allow for a careful comparison of the two cases. We find very good agreement between the two theories. Our results seem to confirm the predicton of Schwinger-Dyson equations that the infrared exponents are independent of the gauge group SU(N).
description: Talk presented at Lattice2007, Regensburg, July 30 - August 4, 2007 References corrected and added a new reference
The Density-Magnetic Field Relation in the Atomic ISM
Creators: name: Gazol, Adriana
name: Villagran, Marco
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present numerical experiments aimed to study the correlation between the magnetic field strength, $B$, and the density, $n$, in the cold atomic interstellar medium (CNM). We analyze 24 magneto-hydrodynamic models with different initial magnetic field intensities ($B_0=$0.4, 2.1, 4.2, and 8.3 $μ$G) and/or mean densities (2, 3, and 4 cm$^{-3}$), in the presence of driven and decaying turbulence, with and without self-gravity, in a cubic computational domain with 100 pc by side. Our main findings are: i) For forced simulations, which reproduce the main observed physical conditions of the CNM in the Solar neighborhood, a positive correlation between $B$ and $n$ develops for all the $B_0$ values. ii) The density at which this correlation becomes significant ($\lesssim 30$ cm$^{-3}$) depends on $B_0$ but is not sensitive to the presence of self-gravity. iii) The effect of self-gravity, when noticeable, consists of producing a shallower correlation at high densities, suggesting that, in the studied regime, self-gravity induces motions along the field lines. iv) Self-gravitating decaying models where the CNM is subsonic and sub-Alfvénic with $β\lesssim 1$ develop a high density positive correlation whose slopes are consistent with a constant $β(n)$. v) Decaying models where the low density CNM is subsonic and sub-Alfvénic with $β>1$ show a negative correlation at intermediate densities, followed by a high density positive correlation.
description: Accepted for publication in MNRAS, 10 pages, 11 figures
Quantum size effects in solitary wires of bismuth
Creators: name: Farhangfar, Shadyar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have performed four-probe electrical transport measurements on solitary highly crystalline wires of semimetallic bismuth with aspect ratios up to 60 at room and at cryogenic temperatures. By proper choice of the substrate material and the film deposition parameters, lithographic wires with lateral dimensions of down to one single grain, $\sim 250$ nm, were fabricated. The electrical resistance of each wire was measured against its thickness through successive reactive ion etching of the self-same wire. Quantum size effects revealed themselves as regular oscillations in the electrical resistance. Some evidence for the semimetal-to-semiconductor phase transition has been detected. The measured data are discussed within the framework of the existing theoretical models.
description: 5 pages, 6 figures, and the LaTeX source
The Case for a Hubble Constant of 30 km/s/Mpc
Creators: name: Bartlett, J. G.
name: Blanchard, A.
name: Silk, J.
name: Turner, M. S.
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Although cosmologists have been trying to determine the value of the Hubble constant for nearly 65 years, they have only succeeded in limiting the range of possibilities: most of the current observational determinations place the Hubble constant between 50 km/s/Mpc and 90 km/s/Mpc. The uncertainty is unfortunate because this fundamental parameter of cosmology determines both the distance scale and the time scale, and thereby affects almost all aspects of cosmology. Here we make the case for a Hubble constant that is even smaller than the lower bound of the accepted range, arguing on the basis of the great advantages, all theoretical in nature, of a Hubble constant of around 30 km/s/Mpc. Those advantages are: (1) a comfortable expansion age that avoids the current age crisis; (2) a cold dark matter power spectrum whose shape is in good agreement with the observational data and (3) which predicts an abundance of clusters in close agreement with that of x-ray selected galaxy clusters; (4) a nonbaryonic to baryonic mass ratio that is in better agreement with recent determinations based upon cluster x-ray studies. In short, such a value for the Hubble constant cures almost all the ills of the current theoretical orthodoxy, a flat Universe comprised predominantly of cold dark matter.
description: 14 pages of uuencoded, compressed PostScript with 4 figures. Submitted to Nature