cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
To Protect and Serve: The Establishment and Reorganization of the Carnegie Mellon Campus Security Office, 1960-1970
Creators: name: Slavishak, Ed
Publisher: name: Carnegie Mellon University
Year: 1997
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: As a leading educational and research institution, Carnegie Mellon University benefits from the numerous rewards that such a position entails— an intelligent and motivated student body, a national reputation for excellence, and innovative ideas often leading to pioneering study. There is more to an institution of higher education than its academic program, though. A university campus as a community within a community is greatly affected by the trends and events of the larger community. As a university located in an urban setting, CMU suffers many problems that are directly related to the surrounding city. These include a high potential for crime, lack of adequate space for parking and facilities, and the difficult situations that arise when private institution is located on seemingly public ground. All three of these problems are encountered on a day-to-day basis by the CMU Campus Police force, whose job it is to provide the basic protective and law enforcement services required to make the campus a place of free inquiry and general security. The nature of security services at CMU and, naturally, all colleges and universities in the country, has changed drastically in the twentieth century. Law enforcement and preventive policing have taken the place of safety monitoring and reactive policing, in reaction to a number of factors that have changed the face of campus life and have forced students and administrators to reconsider the perceived safety of the campus. Among these are rising crime rates, increased student activism and unrest, and new definitions of a university's liability for the welfare of its students. To study the history of a campus security force, then, is to essentially study the campus community and the larger community in which the college or university is located.
An autonomous quantum machine to measure the thermodynamic arrow of time
Creators: name: Monsel, Juliette
name: Elouard, Cyril
name: Auffèves, Alexia
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: According to the Second Law of thermodynamics, the evolution of physical systems has a preferred direction, that is characterized by some positive entropy production. Here we propose a direct way to measure the stochastic entropy produced while driving a quantum open system out of thermal equilibrium. The driving work is provided by a quantum battery, the system and the battery forming an autonomous machine. We show that the battery's energy fluctuations equal work fluctuations and check Jarzynski's equality. Since these energy fluctuations are measurable, the battery behaves as an embedded quantum work meter and the machine verifies a generalized fluctuation theorem involving the information encoded in the battery. Our proposal can be implemented with state-of-the-art opto-mechanical systems. It paves the way towards the experimental demonstration of fluctuation theorems in quantum open systems.
description: 9 pages, 5 figures
Equivalence of BRST cohomologies for 2-d black hole and c=1 Liouville theory
Creators: name: Ishikawa, Hiroshi
name: Kato, Mitsuhiro
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the relation between the $SL(2,R)/U(1)$ black hole and the $c=1$ Liouville theory. A deformation, which interpolates the BRST operators of both models, is explicitly constructed. This interpolation is isomorphic, and the physical spectrum of the black hole is equivalent to that of the $c=1$ model tensored by a topological $U(1)/U(1)$ model. Some implications of the deformation are discussed.
description: latex. 10 pages. UT-Komaba/92-11
IDERHA Corporate slide deck
Creators: name: Löwik, Judy
Publisher: name: Zenodo
Year: 2024

description: IDERHA (Integration of Heterogeneous Data and Evidence towards Regulatory and HTA Acceptance) is a European public-private partnership launched in April 2023. This pioneering project addresses the obstacles in accessing, integrating and analysing health data to maximize their value for patient care and medical research.
Precise Formulation of Neutrino Oscillation in the Earth
Creators: name: Liao, Wei
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We give a perturbation theory of neutrino oscillation in the Earth. The perturbation theory is valid for neutrinos with energy $E \gsim 0.5$ GeV. It is formulated using trajectory dependent average potential. Non-adiabatic contributions are included as the first order effects in the perturbation theory. We analyze neutrino oscillation with standard matter effect and with non-standard matter effect. In a three flavor analysis we show that the perturbation theory gives a precise description of neutrino conversion in the Earth. Effect of the Earth matter is substantially simplified in this formulation.
description: References added, 21 pages, 10 figures, version to appear in PRD
The gluon condensate in an effective SU(2) Yang-Mills theory
Creators: name: Efremov, A. N.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We make progress towards a derivation of a low energy effective theory for SU(2) Yang-Mills theory. This low energy action is computed to 1-loop using the renormalization group technique, taking proper care of the Slavnov-Taylor identities in the Maximal Abelian Gauge. After that, we perform the Spin-Charge decomposition in a way proposed by L.D. Faddeev and A.J. Niemi. The resulting action describes a pair of non-linear O(3) nonlinear sigma models interacting with a scalar field. The potential of the scalar field is a Mexican hat and the location of the minima sets the energy scale of solitonic configurations of the sigma model fields whose excitations correspond to glueball states.
title: Water-soluble organotin compounds
title: syntheses, structures and reactivity towards fluoride anion in water
titleType: AlternativeTitle
Creators: name: Alashkar, Nour
name: Arca, Massimiliano
name: Alnasr, Hazem
name: Lutter, Michael
name: Lippolis, Vito
Publisher: name: TU Dortmund
Year: 2020
Subjects: subject: Tin
subject: Fluorides
subject: Cations
subject: Lewis acids
subject: Structure elucidation
subject: Density functional calculations
subject: 540

description: Herein, we report the syntheses of the water-soluble organotin compounds [{Me2(H)N(CH2)3}2SnX2]Y2 (1, X = Cl, Y = ClO4; 2, X = F, Y = ClO4) and {Me2(H)N(CH2)3}2SnX4 (3, X = Cl; 4, X = F). The compounds were characterized by elemental analysis, electrospray mass spectrometry, 1H, 13C, 19F, and 119Sn NMR spectroscopy, and in the case of compounds 1, 3 and 4, by single-crystal X-ray diffraction analysis. The reaction of compound 2 with fluoride anions in water was investigated by NMR spectroscopy. DFT calculations accompany the experimental work.
description: European journal of inorganic chemistry;2020, Issue 41, pp 3925-3936
To Protect and Serve: The Establishment and Reorganization of the Carnegie Mellon Campus Security Office, 1960-1970
Creators: name: Slavishak, Ed
Publisher: name: Carnegie Mellon University
Year: 1996
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: As a leading educational and research institution, Carnegie Mellon University benefits from the numerous rewards that such a position entails— an intelligent and motivated student body, a national reputation for excellence, and innovative ideas often leading to pioneering study. There is more to an institution of higher education than its academic program, though. A university campus as a community within a community is greatly affected by the trends and events of the larger community. As a university located in an urban setting, CMU suffers many problems that are directly related to the surrounding city. These include a high potential for crime, lack of adequate space for parking and facilities, and the difficult situations that arise when private institution is located on seemingly public ground. All three of these problems are encountered on a day-to-day basis by the CMU Campus Police force, whose job it is to provide the basic protective and law enforcement services required to make the campus a place of free inquiry and general security. The nature of security services at CMU and, naturally, all colleges and universities in the country, has changed drastically in the twentieth century. Law enforcement and preventive policing have taken the place of safety monitoring and reactive policing, in reaction to a number of factors that have changed the face of campus life and have forced students and administrators to reconsider the perceived safety of the campus. Among these are rising crime rates, increased student activism and unrest, and new definitions of a university's liability for the welfare of its students. To study the history of a campus security force, then, is to essentially study the campus community and the larger community in which the college or university is located.
On the Determination of the Gluon Density of the Proton from Heavy-Flavour Production at HERA
Creators: name: Nason, Stefano Frixione Michelangelo L. Mangano Paolo
name: Ridolfi, Giovanni
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using a recent next-to-leading-order calculation of the photoproduction double differential cross section for heavy quarks, we study the possibility of extracting the gluon density of the proton from heavy-quark photoproduction data. We discuss the theoretical uncertainties connected with this method, and we conclude that they are well under control in a wide $x$ domain.
description: CERN-TH.6864/93, GeF-TH-12/93. Latex, 5 topdrawer figures appended at the end
Spatial aggregation of local likelihood estimates with applications to classification
Creators: name: Belomestny, Denis
name: Spokoiny, Vladimir
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G05 (Primary); 62G07, 62G08, 62G32, 62H30 (Secondary)

description: This paper presents a new method for spatially adaptive local (constant) likelihood estimation which applies to a broad class of nonparametric models, including the Gaussian, Poisson and binary response models. The main idea of the method is, given a sequence of local likelihood estimates (``weak'' estimates), to construct a new aggregated estimate whose pointwise risk is of order of the smallest risk among all ``weak'' estimates. We also propose a new approach toward selecting the parameters of the procedure by providing the prescribed behavior of the resulting estimate in the simple parametric situation. We establish a number of important theoretical results concerning the optimality of the aggregated estimate. In particular, our ``oracle'' result claims that its risk is, up to some logarithmic multiplier, equal to the smallest risk for the given family of estimates. The performance of the procedure is illustrated by application to the classification problem. A numerical study demonstrates its reasonable performance in simulated and real-life examples.
description: Published in at http://dx.doi.org/10.1214/009053607000000271 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
The United States Steel Company, 1890- 1920: An Examination of Economic Cooperation and Competition
Creators: name: Jacobs, Paul D.
Publisher: name: Carnegie Mellon University
Year: 2000
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: Beginning in 1890, business and government engaged in a symbiotic relationship which juxtaposed congressional regulation and judicial precedence with the free-market tendency for profit and power, and which subsequently became an indisputable hallmark of American society. To modern businessmen and government policy makers, government regulation that alters and controls the structure of corporate organizations and the decisions of their managerial hierarchies is often contested. On July 2,1890, Congress passed the Sherman Antitrust Act in reaction to the cartels, pools and trusts which had begun to stifle competition and produce monopolistic organizations in the American economy. These trusts and holding companies had the potential to control the prices, production and constitution of diverse markets, especially in the railroad and oil industries. Specifically, Section 3 of the Sherman Act prohibited "every contract, combination in form of trust or otherwise, or conspiracy, in restraint of trade or commerce."1 Thereafter, the federal government's position as regulator of American business could not be questioned. The case against U.S. Steel, regardless of its outcome, established the resolute hold of federal regulators on corporate decisions relating to market positions and monopolistic control.
Lernergebnisse beurteilen und bewerten. Ausbildung – Mentorat Sekundarstufe I. Bausteinheft 5. Studienplan SP21
Creators: name: Borer, Evelyne
name: Egli, Christoph
name: Häcker, Thomas
name: Hippe, Seline
name: Roth, Hans
name: Weil Thommen, Myriam
name: Weingartner, Armin
name: Wespi, Claudia
name: Wildhirt, Susanne
Publisher: name: Zenodo
Year: 2023
Subjects: Pädagogik
Methodik
Didaktik
Sekundarstufe
Lernkontrolle
Leistungsbeurteilung
Bewerten
Beurteilungskompetenz
Diagnosekompetenz
Noten
Förderung
Zeugnis

description: Die in der Ausbildung von Lehrpersonen an der PH Luzern eingesetzten Bausteinhefte sind ein wichtiges Bindeglied zwischen der berufspraktischen Ausbildung in den Praxisschulen und den Lehrveranstaltungen an der Hochschule. Sie legen den Grundstein für eine gemeinsame Sprache zwischen Studierenden, Dozierenden und Praxislehrpersonen.
Das Bausteinheft 5 thematisiert und problematisiert einen hoch sensiblen Bereich im Lehrpersonen-Schülerinnen/Schüler-Verhältnis, indem es sich mit den widersprüchlichen Anforderungen von Lernförderung und Leistungsbewertung auseinandersetzt.
Dieses Bausteinheft leistet einen Beitrag zum Aufbau und zur Entwicklung der Diagnose- und Beurteilungskompetenz von angehenden Lehrerinnen und Lehrern. Es vermittelt den Studierenden anhand von acht Bausteinen wichtige Grundlagen zu den Themen Beobachten, Beurteilen, Bewerten und Beraten. Besprochen werden dabei die Funktionen der Leistungsbeurteilung, die Bezugsnormen und die Bezugsnormorientierung, das Vorbereiten, Durchführen und Korrigieren von Prüfungen, die Notengebung, standardisierte Lernkontrollen, die erweiterte Leistungsbeurteilung, die Selbstbeurteilung und das Arbeiten mit Portfolios.
description: + ID der Publikation: phlu_18494 + Art des Beitrages: Andere Lehr-/Lernmaterialien + Sprache: Deutsch + Bemerkungen: Diese Publication 18494 ersetzt https://doi.org/10.5281/zenodo.215981
Bei Fragen: jolanda.felder@phlu.ch + Letzte Aktualisierung: 2024-02-21 13:30:27
Exact Duality Symmetries in CFT and String Theory
Creators: name: Kiritsis, E.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The duality symmetries of WZW and coset models are discussed. The exact underlying symmetry responsible for semiclassical duality is identified with the symmetry under affine Weyl transformations. This identification unifies the treatement of duality symmetries and shows that in the compact and unitary case they are exact symmetries of string theory to all orders in $α'$ and in the string coupling constant. Non-compact WZW models and cosets are also discussed. A toy model is analyzed suggesting that duality will not generically be a symmetry.
description: 29 pages, Latex
Efficient Bethe-Salpeter equations' treatment in dynamical mean-field theory
Creators: name: Tagliavini, Agnese
name: Hummel, Stefan
name: Wentzell, Nils
name: Andergassen, Sabine
name: Toschi, Alessandro
name: Rohringer, Georg
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present here two alternative schemes designed to correct the high-frequency truncation errors in the numerical treatment of the Bethe-Salpeter equations. The schemes are applicable to all Bethe-Salpeter calculations with a local two-particle irreducible local, which is relevant, e.g., for the dynamical mean-field theory (DMFT) and its diagrammatic extensions. In particular, within a purely diagrammatic framework, we could extend existing algorithms for treating the static case in the particle-hole sector to more general procedures applicable to all bosonic frequencies and all channels. After illustrating the derivation and the theoretical interrelation of the two proposed schemes, these have been applied to the Bethe-Salpeter equations for the auxiliary Anderson impurity models of selected DMFT calculations, where results can be compared against a numerically "exact" solution. The successful performance of the proposed schemes suggests that their implementation can significantly improve the accuracy of dynamical mean-field theory (DMFT) calculations at the two-particle level, in particular for more realistic multi-orbital calculations where the large number of degrees of freedom substantially restricts the actual frequency range for numerical calculations, as well as -on a broader perspective- of the diagrammatic extensions of DMFT.
description: 20 pages, 12 figures
Detecting an Intermediate Mass Charged Higgs at $γγ$ Colliders
Creators: name: Bowser-Chao, David
name: Cheung, Kingman
name: Thomas, Scott
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The detection of an intermediate mass charged Higgs boson at $\gamgam$ colliders via the modes $\gamgam \to H^+ H^- \to ντ^+ \barν τ^-,~ c \bar{s} \bar{c} s,~$ and $ ντ^+ \bar{c}s + c \bar{s} \barν τ^-$ is considered. $W^+ W^-$ boson pair production is the dominant background for these modes. The three modes may be used in a complementary fashion to detect a charged Higgs boson. The mixed leptonic-hadronic mode may be used to determine the charged Higgs mass by reconstructing the invariant hadronic mass. The sensitivity of Br$(H^+ \rightarrow c\bar s,\,ντ^+)$ on the discovery limit of the charged Higgs boson is also discussed.
description: Latex file, 13 pages, 8 figures (available by anonymous ftp at utaphy/UTTG-preprints in the files phohiggs1.ps and phohiggs2.ps), preprint NUHEP-TH-93-7, CPP-93-6, UTTG-8-93 (minor typos corrected)
Shadia Igram Interview
Creators: name: Institute For Diversity & Civic Life
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Religions Texas
Austin
Children
COVID-19
Gender dynamics
Generation X
Home life
Muslim Space
Muslim
Muslim women's leadership
Online community
Online worship
Ramadan
Texas
Youth engagement

description: This interview is with Shadia Igram, founding member and executive director of Muslim Space in Austin, TX. Shadia speaks about the challenges and blessings of leadership and community engagement during the pandemic. She relates the unique opportunities that online worship has raised for Muslim Space to connect with people around the world and push the boundaries of Muslim women’s religious leadership.
title: ADCO, Cartulaire de Cîteaux pour les possessions de Saulon-la-Chapelle et Saulon-la-Rue, Fénay, Noiron et la rivière Cent-fonds (XVe siècle), Cart. 179 (11 H 1075), 70 folios, f. 0103
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
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi

description: Cartulaire de Cîteaux pour les possessions de Saulon-la-Chapelle et Saulon-la-Rue, Fénay, Noiron et la rivière Cent-fonds (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 179 (11 H 1075), 70 folios, f. 0103, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions de Saulon-la-Chapelle et Saulon-la-Rue, Fénay, Noiron et la rivière Cent-fonds (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 179 (11 H 1075), 70 folios, f. 0103, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Determining stellar properties of massive stars in NGC 346 in the SMC with a Bayesian statistic technique -  Additional Information
Creators: name: Rickard, Matthew
name: Hainich, Rainer
name: Pauli, Daniel
name: Hamann, W-R
name: Oskinova, Lida, M
name: Prinja, Raman, K
name: Ramachandran, Varsha
name: Todt, Helge
name: Schösser, Elouise, C
name: Sander, Andreas A, C,
name: Zeidler, Peter
Publisher: name: Zenodo
Year: 2024

description: Additional information from the Astronomy & Astrophysics article titled "Determining stellar properties of massive stars in NGC 346 in the SMC with a Bayesian statistic technique".

DOI and reference details to follow.
The Riddle of the Revised Novels: Nancv Drew in the Depression and Cold War
Creators: name: Fribush, Rebecca S.
Publisher: name: Carnegie Mellon University
Year: 1998
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: Generations of American girls have come of age reading Nancy Drew mystery stories. The first Drew books came out during the 1930s, in the thick of the Great Depression. The series' publishers revised them as the Cold War raged in the late 1950s and early 1960s. A careful study of what changed and what did not suggests that the revisions were designed to transform books whose attitudes were informed by the progressive early 1930s into stories that fit the very different tempo of the strait-laced 1950s and early 1960s. Such a study provides a vivid example of the ways in with American popular culture picks up on and reflects changes in the society at large. Moreover, Nancy Drew novels were aimed at impressionable young girls, who depended on such books for a picture of what the world was like and for help in finding their place in it. Thus, the books' role as barometers of societal change grows even more significant. To demonstrate how completely the Nancy Drews were designed and redesigned to reflect the prevailing cultural winds, it is necessary to compare and contrast the content of both editions of several of these novels with respect to how well they illustrate the broader social climate of their times.
Target Space Description of W-Infinity Symmetry in Coset Models
Creators: name: Bakas, I.
name: Kiritsis, E.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Various typos corrected
description: 8pp, Latex, LPTENS-92-30
PROVINCE OF BRITISH COLUMBIA DEPARTMENT OF LANDS AND FORESTS HON. E. T. KENNEY, Minister G. P. MELROSE, Deputy Minister of Lands Report of the Lands Service containing the reports of the Lands Branch, Surveys and Mapping Branch, and Water Rights Branch together with the Dyking Commissioner, Southern Okanagan Lands Project, University Endowment Lands, and the Coal, Petroleum and Natural Gas Branch Year Ended December 31st 1951
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2017

Abstract
Growing Up Inuk
Creators: name: Harrison, Carla Kristmar
Publisher: name: Canadian Literature
Year: 2018

description: I have reviewed two Inuit young adult novels because I feel it is important that our literary canon in Canada include and embrace Indigenous literature. In particular, I would like to see books like Those Who Run in the Sky and Why the Monster being studied in secondary school classrooms throughout British Columbia.
description: Canadian Literature, No 235 (2017): Concepts of Vancouver: Poetics, Art, Media
The NGC 7742 star cluster luminosity function: A population analysis revisited
Creators: name: de Grijs, Richard
name: Ma, Chao
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We re-examine the properties of the star cluster population in the circumnuclear starburst ring in the face-on spiral galaxy NGC 7742, whose young cluster mass function has been reported to exhibit significant deviations from the canonical power law. We base our reassessment on the clusters' luminosities (an observational quantity) rather than their masses (a derived quantity), and confirm conclusively that the galaxy's starburst-ring clusters---and particularly the youngest subsample, $\log(t \mbox{ yr}^{-1}) \le 7.2$---show evidence of a turnover in the cluster luminosity function well above the 90\% completeness limit adopted to ensure the reliability of our results. This confirmation emphasises the unique conundrum posed by this unusual cluster population.
description: 6 pages, 1 figure; Res. Astron. Astrophys., in press
Singular Scaling Functions in Clustering Phenomena
Creators: name: Barma, Mustansir
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study clustering in a stochastic system of particles sliding down a fluctuating surface in one and two dimensions. In steady state, the density-density correlation function is a scaling function of separation and system size.This scaling function is singular for small argument -- it exhibits a cusp singularity for particles with mutual exclusion, and a divergence for noninteracting particles. The steady state is characterized by giant fluctuations which do not damp down in the thermodynamic limit. The autocorrelation function is a singular scaling function of time and system size. The scaling properties are surprisingly similar to those for particles moving in a quenched disordered environment that results if the surface is frozen.
description: 8 pages, 3 figures, Invited talk delivered at Statphys 23, Genova, July 2007
A simple construction of associative deformations
Creators: name: Sharapov, Alexey A.
name: Skvortsov, Evgeny D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 16S80

description: We propose a simple approach to formal deformations of associative algebras. It exploits the machinery of multiplicative coresolutions of an associative algebra A in the category of A-bimodules. Specifically, we show that certain first-order deformations of A extend to all orders and we derive explicit recurrent formulas determining this extension. In physical terms, this may be regarded as the deformation quantization of noncommutative Poisson structures on A.
description: 17 pages, journal version
Islamic Banking Finance for the Agricultural Sector and its Impact in the Economy: Cases from Selected Muslim Countries
Creators: name: Aljumai, Johara Saleh
Publisher: name: Manara - Qatar Research Repository
Year: 2025
Subjects: classificationCode: 50
subject: Philosophy and religious studies

description: Agricultural activities occupy a central part in the economies of many Muslim countries. Rich oil countries have also given increasing consideration to develop their agricultural sector in recent decades. In fact, the agricultural sector can play an important role in the economic development of the Muslim world. Financing agricultural activities is among factors that are most important for its development. Unlike the past, modern agricultural activities are dependent on machineries, equipment, technology and modern marketing matters that increase the weight and importance of the financial aspect in agricultural development. Farmers and Small Businesses in this sector in many cases lack sufficient financial support from both banks and the government due to many factors. Therefore, though many problems facing the agriculture sector but this research is going to focus on the financial problems. The research would display the size and structure of finance that is flowing to the agricultural sector through the banking system and analyze its suitability, and sufficiency for its growth. However, the main concern of the research is to find out the contribution, in some selected Muslim countries, of Islamic banking finance. Islamic banking is relatively new in many Muslim countries, but theoretically, it can play an important role particularly through specialized modes such as Muzara’a, and Salam. Yet, how far these modes been employed in practice? What kind of problems that may be involved in application of Islamic banking finance in agricultural activities? And what can be done to develop Islamic banking finance to the agricultural sector for purposes of its healthy development? The research would select three countries: Qatar, UAE, and Jordan, which are having interest in developing their agricultural activities. The financial sector in the selected countries has experienced a growing Islamic banking sector. However, the critical question is: how far Islamic Banks have given financial support to this agricultural sector? How far something extra or different is given to this sector by Islamic banks in comparison to conventional interest-based banking system? For the three countries that are selected for study, Qatar is having a small agricultural sector with a tiny weight in its national income, but would benefit much from its development. UAE was having small scale agricultural sector but has done great efforts for its development in the last decade. Jordan has a larger traditional agricultural sector but has gone successfully for its development for decades. Comparison of different conditions for the agricultural sector within different sets of banking systems, and different size of Islamic finance would lead to better understanding of the role that can be played by Islamic banking in financing agriculture and its development.
Gravitational lensing time delays as a tool for testing Lorentz Invariance Violation
Creators: name: Biesiada, Marek
name: Piórkowska, Aleksandra
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Despite the fact that quantum gravity theory still remains elusive, it is generally expected that it will bring the picture of a space-time foam at short distances leading to Lorenz Invariance Violation (LIV) manifested e.g. by energy dependent modification of standard relativistic dispersion relation. One direction of research, pursued intensively is to measure energy dependent time of arrival delays in photons emitted by astrophysical sources located at cosmological distances. This is tempered however by our ignorance of either intrinsic delay (at source frame) in different energy channels or as recently shown, the correct model of the background cosmology. In this paper we propose a new test based on gravitational lensing. Monitoring time delays between images performed in different energy channels (e.g. optical - low energy and TeV photons) may reveal extra delays due to distorted dispersion relation typical in LIV theories - a test which is free from the systematics inherent in other settings.
description: 11 pages, submitted to A&A. Version corrected in order to acknowledge the priority of G. Amelino-Camelia et al. (1998 Nature 393, 763) in formulating the idea of using gravitational time delays for testing LIV
Rapid neutrino cooling in the neutron star MXB 1659-29
Creators: name: Brown, Edward F.
name: Cumming, Andrew
name: Fattoyev, Farrukh J.
name: Horowitz, C. J.
name: Page, Dany
name: Reddy, Sanjay
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We show that the neutron star in the transient system MXB~1659-29 has a core neutrino luminosity that substantially exceeds that of the modified Urca reactions (i.e., $n+n\to n+p+e^{-}+\barν_{e}$ and inverse) and is consistent with the direct Urca reactions ($n\to p+e^{-}+\barν_{e}$ and inverse) occurring in a small fraction of the core. Observations of the thermal relaxation of the neutron star crust following 2.5 years of accretion allow us to measure the energy deposited into the core during accretion, which is then reradiated as neutrinos, and infer the core temperature. For a nucleonic core, this requires that the nucleons are unpaired and that the proton fraction exceed a critical value to allow the direct Urca reaction to proceed. The neutron star in MXB~1659-29 is the first with a firmly detected thermal component in its X-ray spectrum that needs a fast neutrino cooling process. Measurements of the temperature variation of the neutron star core during quiescence would place an upper limit on the core specific heat and serve as a check on the fraction of the neutron star core in which nucleons are unpaired.
description: 5 pages, 3 figures
Validity of Tests for Time-to-Event Endpoints in Studies with the Pocock and Simon Covariate-Adaptive Randomization
Creators: name: Johnson, Victoria P.
name: Gekhtman, Michael
name: Kuznetsova, Olga M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Mathematical Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Randomization procedures that enforce balance in prognostic factors, most commonly stratified randomization, are often employed in clinical trials. When the number of factors or factor levels is large, dynamic allocation procedures, such as the Pocock and Simon’s covariate-adaptive randomization (minimization) are preferred. In their ground-breaking work Ye and Shao identified two classes of covariate-adaptive randomization procedures. They have demonstrated theoretically that for these classes, when the model is misspecified, the robust score test (Lin and Wei) as well as the unstratified log-rank test used for analysis of time-to-event endpoints, are valid or conservative (Ye and Shao). This fact, however, was not established for minimization other than through simulations of survival endpoints. In this article, we point out that the results of Ye and Shao can be expanded to a more general class of randomization procedures. We show, in part theoretically, in part through simulations of the within-strata imbalances, that minimization belongs to this class. Along the way we describe the asymptotic correlation matrix of the normalized within-stratum imbalances following minimization with equal prevalence of all strata. We expand the robust tests proposed by Ye and Shao for stratified randomization to minimization and examine their performance through simulations.
$N_c$-counting rules and the axial vector coupling constant of the constituent quark
Creators: name: Broniowski, W.
name: Lutz, M.
name: Steiner, A.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Instead of using a simple reggeon-exchange model, we provide a model-independent estimate of high-energy contribution to the Adler-Weisberger sum-rule. Results and conclusions of the paper remain unchanged.
description: REVTeX, 9 pages, one figure available upon request
Massive black hole and Population III galaxy formation in over-massive dark matter halos with violent merger histories
Creators: name: Inayoshi, Kohei
name: Li, Miao
name: Haiman, Zoltan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We propose the formation of massive pristine dark-matter (DM) halos with masses of $\sim 10^8~M_\odot$, due to the dynamical effects of frequent mergers in rare regions of the Universe with high baryonic streaming velocity relative to DM. Since the streaming motion prevents gas collapse into DM halos and delays prior star formation episodes, the gas remains metal-free until the halo virial temperatures $\gtrsim 2\times 10^4~{\rm K}$. The minimum cooling mass of DM halos is boosted by a factor of $\sim 10-30$ because frequent major mergers of halos further inhibit gas collapse. We use Monte Carlo merger trees to simulate the DM assembly history under a streaming velocity of twice the root-mean-square value, and estimate the number density of massive DM halos containing pristine gas as $\simeq 10^{-4}~{\rm cMpc}^{-3}$. When the gas infall begins, efficient Ly$α$ cooling drives cold streams penetrating inside the halo and feeding a central galactic disk. When one stream collides with the disk, strong shock forms a dense and hot gas cloud, where the gas never forms H$_2$ molecules due to effective collisional dissociation. As a result, a massive gas cloud forms by gravitational instability and collapses directly into a massive black hole (BH) with $M_\bullet \sim 10^5~M_\odot$. Almost simultaneously, a galaxy with $M_{\star, \rm tot}\sim 10^6~M_\odot$ composed of Population III stars forms in the nuclear region. If the typical stellar mass is as high as $\sim 100~M_\odot$, the galaxy could be detected with the James Webb Space Telescope even at $z\gtrsim 15$. These massive seed BHs would be fed by continuous gas accretion from the host galaxy, and grow to be bright quasars observed at $z\gtrsim 6$.
description: 12 pages, 3 figures, published in MNRAS
Numerical analysis of three-band models for CuO planes as candidates for a spontaneous T violating orbital current phase
Creators: name: Thomale, Ronny
name: Greiter, Martin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently, we have numerically evaluated the current-current correlation function for the ground states of three-band models for the CuO planes of high-Tc superconductors at hole doping x=1/8 using systems with 24 sites and periodic boundary conditions. In this article, the numerical analysis is explicated in detail and extended to a wider range of parameters. Our results show no evidence for the time-reversal symmetry violating current patterns recently proposed by Varma. If such current patterns exist, our results indicate that the energy associated with the loop currents must be smaller than 5 meV per link even if the on-site chemical potential on the oxygen sites, which is generally assumed to be of the order of 3.6 eV, is taken to zero, as advocated by Varma. We also vary the inter-atomic Coulomb repulsion scale and find only a weak dependence on this parameter. So while our studies do not rule out the existence of such current patterns, they do rule out that quantum critical fluctuations of these patterns are responsible for phenomena occurring at significantly higher energies such as the superconductivity or the anomalous properties observed in the strange metal phase provided the CuO superconductors are adequately described by any of the three-band models discussed.
description: 12 pages, 15 figures
Numerical Simulation of Fecal Coliform Dynamics in Luruaco Lake, Colombia
Creators: name: Saita, T. M.
name: Natti, P. L.
name: Cirilo, E. R.
name: Romeiro, N. M. L.
name: Candezano, M. A. C.
name: Acuña, R. B
name: Moreno, L. C. G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Numerical Analysis (math.NA)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 65N06, 65N55

description: The Luruaco Lake located in the Department of Atlántico, Colombia, is damaged by the discharge of untreated sewage, bringing risks to the health of all who use its waters. The present study aims to perform the numerical simulation of the concentration dynamics of fecal coliforms in the lake. The simulation of the hydrodynamic flow is carried out by means of a two-dimensional horizontal (2DH) model, given by a Navier-Stokes system. The simulation of fecal coliform transport is described by a convective-dispersive-reactive equation. These equations are solved numerically by the Finite Difference Method (FDM) and the Mark and Cell (MAC) method, in generalized coordinates. Regarding the construction of the computational mesh of the Luruaco Lake, the cubic spline and multiblock methods were used. The results obtained in the simulations allow a better understanding of the dynamics of fecal coliforms in the Luruaco Lake, showing the more polluted regions. They can also advise public agencies on identifying the emitters of pollutants in the lake and on developing an optimal treatment for the recovery of the polluted environment.
description: 13 pages, in Portuguese, 4 figures
The History of Machupo Virus in Bolivia: Arenavirus Hemorrhagic Fever
Creators: name: Strauchs, Tiffany Y.
Publisher: name: Carnegie Mellon University
Year: 1998
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: Yambuku is what the Africans called the Ebola virus that struck hundreds of victims in Sub-Sahara Africa in 1993 and received so much notoriety in the American news media. What most people do not know is that an outbreak of a "sister" virus to Ebola occurred in a small community in the Amazon Basin in Bolivia about one year later. Similar to its deadly and highly-infectious relative, the Bolivian virus killed mostly the poor indigenous people. El Typho Negro and Machupo are the names given to the virus by the Bolivians. Just as with the Ebola virus, the Machupo virus is also named after the river in the region of the outbreak. This hemorrhagic fever virus appeared in the town of Magdalena in July, 1994. During the first few weeks of July, the Machupo virus woke from its dormancy and emerged from the jungle. Señor Bismar Monasterio, father of three and a cattle rancher on the Campo Alegre ranch, was herding the cattle with the other cowboys. On July 10th, Bismar checked into the primitive hospital in Magdalena. He was experiencing symptoms of dehydration from vomiting and a high temperature. (The doctors suspected that he had salmonella, gave him infusions of an antibacterial drug, and released him.) Three weeks later he returned. This time, he was hemorrhaging blood.
Phenomenology of a Non-Standard Higgs
Creators: name: Chivukula, R. Sekhar
name: Koulovassilopoulos, Vassilis
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The one-Higgs-doublet standard model is necessarily incomplete because of the triviality of the scalar symmetry-breaking sector. If the Higgs mass is approximately 600 GeV or higher, there must be additional dynamics at a scale $Λ$ which is less than a few TeV. In this case the properties of the Higgs resonance can differ substantially from those predicted by the standard model. In this letter we construct an effective Lagrangian description of a theory with a non-standard Higgs boson and analyze the features of a theory with such a resonance coupled to the Goldstone Bosons of the breaking of $\su$. This Lagrangian describes the most general theory in which the Higgs and the Goldstone Bosons are the only particles with a mass small compared to $Λ$. We compute the leading corrections to the decay width of the Higgs boson and the contribution to the Peskin-Takeuchi parameter $S$ and present results for the corrections to Goldstone Boson scattering. We find that the most prominent effects are due to one new parameter, which is directly related to the Higgs boson width.
description: 13 pages, 3 figures, Latex, BUHEP-93-7 (corrects typos in eqn. 21)
Vortex liquid phase in the p-wave ferromagnetic superconductor UCoGe
Creators: name: Wu, Beilun
name: Aoki, Dai
name: Brison, Jean-Pascal
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The upper critical field for field along the b-axis of the p-wave ferromagnetic superconductor UCoGe has a particular S-shape, akin to the re-entrant superconducting phase of URhGe. To explore the evolution of the superconducting phase under this transverse magnetic field, we report the thermal conductivity and resistivity measurements, revealing a possible field-induced vortex liquid phase, and supporting a field-induced change of the superconducting order parameter.
description: 17 pages, 8 figures, includes supplemental material
Randomization-Based Inference for Clinical Trials with Missing Outcome Data
Creators: name: Heussen, Nicole
name: Hilgers, Ralf-Dieter
name: Rosenberger, William F.
name: Tan, Xiao
name: Uschner, Diane
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Plant Biology

description: Randomization-based inference is a natural way to analyze data from a clinical trial. But the presence of missing outcome data is problematic: if the data are removed, the randomization distribution is destroyed and randomization tests have no validity. In this article we describe two approaches to imputing values for missing data that preserve the randomization distribution. We then compare these methods to population-based and parametric imputation approaches that are in standard use to compare error rates under both homogeneous and heterogeneous population models. We also describe randomization-based analogs of standard missing data mechanisms and describe a randomization-based procedure to determine if data are missing completely at random. We conclude that randomization-based methods are a reasonable approach to missing data that perform comparably to population-based methods.