cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Beyond the Spin Model Approximation for Ramsey Spectroscopy
Creators: name: Koller, A. P.
name: Beverland, M.
name: Gorshkov, A. V.
name: Rey, A. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Ramsey spectroscopy has become a powerful technique for probing non-equilibrium dynamics of internal (pseudospin) degrees of freedom of interacting systems. In many theoretical treatments, the key to understanding the dynamics has been to assume the external (motional) degrees of freedom are decoupled from the pseudospin degrees of freedom. Determining the validity of this approximation -- known as the spin model approximation -- is complicated, and has not been addressed in detail. Here we shed light in this direction by calculating Ramsey dynamics exactly for two interacting spin-1/2 particles in a harmonic trap. We focus on $s$-wave-interacting fermions in quasi-one and two-dimensional geometries. We find that in 1D the spin model assumption works well over a wide range of experimentally-relevant conditions, but can fail at time scales longer than those set by the mean interaction energy. Surprisingly, in 2D a modified version of the spin model is exact to first order in the interaction strength. This analysis is important for a correct interpretation of Ramsey spectroscopy and has broad applications ranging from precision measurements to quantum information and to fundamental probes of many-body systems.
Características granulométricas de los sedimentos modernos de Bahía Concepción, Baja California Sur, México /
Creators: name: Motolinia Hidalgo, Jose Manuel
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: QE472 M68 1996

description: Con el fin de analizar características granulométricas de Bahía Concepción, se realizaron 13 transectos a lo largo y ancho de la Bahía, obteniendo 60 muestras de sedimento, de las cuales 44 fueron analizadas en laboratorio.
Energy, Life, and Morality in California
Creators: name: Cook, Evan
Publisher: name: Unknown
Year: 2023
Subjects: subject: solar energy
subject: ecofeminism
subject: oil
subject: energy saving
subject: corporate governance
subject: individual responsibility
subject: pollution
subject: nuclear energy
subject: coal
subject: oil spills
subject: energy independence
subject: disasters
subject: wind energy
subject: energy futures

description: Evan Cook interviews his grandparents, Judy and Ron Cook, about the energy transitions they have witnessed in their lifetimes. Judy discusses the merits of solar energy over oil, the malfeasance of energy corporations and the California power utility PG&E, waste, pollution, the individual responsibility for saving energy, and the gendered nature of consumption. Ron discusses the invisibility of energy, early solar energy, coal mining and its perils, oil spills, the risks of nuclear energy, and the ecological degradation facing future generations.
Experimental detection of entanglement with optimal-witness families
Creators: name: Dai, Jibo
name: Len, Yink Loong
name: Teo, Yong Siah
name: Englert, Berthold-Georg
name: Krivitsky, Leonid A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report an experiment in which one determines, with least tomographic effort, whether an unknown two-photon polarization state is entangled or separable. The method measures whole families of optimal entanglement witnesses. We introduce adaptive measurement schemes that greatly speed up the entanglement detection. The experiments are performed on states of different ranks, and we find good agreement with results from computer simulations.
description: Accepted for PRL. V3 includes an appendix which we comment on related work, discuss more general adaptive schemes, provide some technical details of the experiment. We thank the anonymous referees for critical suggestions and comments
Off line LC x SFC in the prospect of upgrading natural or recycled products.
Creators: name: Karine, Faure
Publisher: name: Zenodo
Year: 2023
Subjects: liquid chromatography
supercritical fluid chromatography

description: Presentation provided on the 6th STARSS Conference on Separation Science, held on the 17th-19th october 2022 at Hradec Kralove (Czech Republic).
Landauer, Kubo, and microcanonical approaches to quantum transport and noise: A comparison and implications for cold-atom dynamics
Creators: name: Chien, Chih-Chun
name: Di Ventra, Massimiliano
name: Zwolak, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We compare the Landauer, Kubo, and microcanonical [J. Phys. Cond. Matter {\bf 16}, 8025 (2004)] approaches to quantum transport for the average current, the entanglement entropy and the semiclassical full-counting statistics (FCS). Our focus is on the applicability of these approaches to isolated quantum systems such as ultra-cold atoms in engineered optical potentials. For two lattices connected by a junction, we find that the current and particle number fluctuations from the microcanonical approach compare well with the values predicted by the Landauer formalism and FCS assuming a binomial distribution. However, we demonstrate that well-defined reservoirs (i.e., particles in Fermi-Dirac distributions) are not present for a substantial duration of the quasi-steady state. Thus, the Landauer assumption of reservoirs and/or inelastic effects is not necessary for establishing a quasi-steady state. Maintaining such a state indefinitely requires an infinite system, and in this limit well-defined Fermi-Dirac distributions can occur. A Kubo approach -- in the spirit of the microcanonical picture -- bridges the gap between the two formalisms, giving explicit analytical expressions for the formation of the steady state. The microcanonical formalism is designed for closed, finite-size quantum systems and is thus more suitable for studying particle dynamics in ultra-cold atoms. Our results highlight both the connection and differences with more traditional approaches to calculating transport properties in condensed matter systems, and will help guide the way to their simulations in cold-atom systems.
description: 16 pages, 15 figures
Gauge Theory of Maxwell-Weyl Group
Creators: name: Cebecioğlu, O.
name: Kibaroğlu, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting from Maxwell-Weyl algebra we found the transformation rules for generalized space-time coordinates and the differential realization of corresponding generators. By treating local gauge invariance of Maxwell-Weyl group, we presented the Einstein-Cartan-Weyl gravity with the additional terms containing the gauge fields associated with the antisymmetric generators.
Alice Guy Blaché at Columbia University: One Hundred Years Later
Creators: Saccone, Kate
Publisher: name: Columbia University
Year: 2017
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: Earlier this spring, while rereading a portion of Alison McMahan’s book Alice Guy Blaché: Lost Visionary of the Cinema, I was reminded that, in the summer of 1917, Columbia University invited the eponymous film director, producer, screenwriter, and studio head to come give two lectures on the art of cinema. These lectures took place on the evenings of July 13 and August 3, 1917, two Fridays during the university’s notable Summer Session. Having been involved with the Women Film Pioneers Project for a while, I have always been aware that Guy Blaché visited Columbia at some point, but I knew nothing else and, admittedly, hardly thought about it. However, realizing that the centennial was approaching, I wanted to learn more. With no idea if there was anything more to even find (or what I was looking for), I began to dig. As you would expect, my small-scale archival scavenger hunt was ultimately one with infuriating absences, endless questions, and fascinating contradictions. It also was an exciting opportunity to reflect on WFPP’s mission and its place within the broader history of film studies at Columbia.
Hot-electron intraband luminescence from single hot spots in noble-metal nanoparticle films
Creators: name: Haug, Tobias
name: Klemm, Philippe
name: Bange, Sebastian
name: Lupton, John M.
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 530 Physik

description: Disordered noble-metal nanoparticle films exhibit highly localized and stable non-linear light emission from sub-diffraction regions upon illumination by near-infrared femtosecond pulses. Such hot spot emission spans a continuum in the visible and near-infrared spectral range. Strong plasmonic enhancement of light-matter interaction and the resulting complexity of experimental observations have prevented the development of a universal understanding of the origin of light emission. Here, we study the dependence of emission spectra on excitation irradiance and provide the most direct evidence yet that the continuum emission observed from both silver and gold nanoparticle aggregate surfaces is caused by recombination of hot electrons within the conduction band. The electron gas in the emiting particles, which is effectively decoupled from the lattice temperature for the duration of emission, reaches effective temperatures of several thousand Kelvin and acts as a sub-diffraction incandescent light source on sub-picosecond time scales.
Clustering GCG: a viable option for unified dark matter-dark energy?
Creators: name: Kumar, Sumit
name: Sen, Anjan A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the clustering Generalized Chaplygin Gas (GCG) as a possible candidate for dark matter-dark energy unification. The vanishing speed of sound ($c_{s}^2 = 0$) for the GCG fluid can be obtained by incorporating higher derivative operator in the original K-essence Lagrangian. The evolution of the density fluctuations in the GCG+Baryon fluid is studied in the linear regime. The observational constraints on the model are obtained using latest data from SNIa, $H(z)$, BAO and also for the $fσ_{8}$ measurements. The matter power spectra for the allowed parameter values are well behaved without any unphysical features.
description: 11 pages, Latex style, 6 eps figures
Table S1;Table S2;Tables S3-18 from Age, empathy, familiarity, domestication and call features enhance human perception of animal emotion expressions
Creators: name: Greenall, Jasmin Sowerby
name: Cornu, Lydia
name: Maigrot, Anne-Laure
name: de la Torre, Monica Padilla
name: Briefer, Elodie F.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour

description: Description of the participants (number of respondents in each demographic category) who took part in the survey. ;Overview of number of correct responses, incorrect responses and questions answered as ‘not sure’, for each species and each dimension.;Summary of the model outputs.
Consistent high-energy constraints in the anomalous QCD sector
Creators: name: Roig, Pablo
name: Cillero, Juan José Sanz
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The anomalous Green function and related form-factors (pi^0 to gamma^* gamma^* and tau^- to X^- nu_tau vector form-factors, with X^-=(KKpi)^-, phi^- gamma, (phi V)^-) are analyzed in this letter in the large-N_C limit. Within the single (vector and pseudoscalar) resonance approximation and the context of Resonance Chiral Theory, we show that all these observables over-determine in a consistent way a unique set of compatible high-energy constraints for the resonance couplings. This result is in agreement with analogous relations found in the even intrinsic-parity sector of QCD like, e.g., F_V^2 = 3 F^2. The antisymmetric tensor formalism is considered for the spin-one resonance fields. Finally, we have also worked out and provide here the relation between the two bases of odd intrinsic-parity Lagrangian operators commonly employed in the literature.
description: 11 pages, no figures. Comparison with the phenomenology extended. Matches version to be published in PLB
THE ROLE OF INTERNAL AUDIT ON INTERNAL CONTROL IN BANKING LENDING
Creators: name: K. AMBARWATI
name: BUDI SANTOSO
name: SITI MALIKHATUN BADRIYAH
Publisher: name: Zenodo
Year: 2023
Subjects: Role, Internal Auditor, Internal Control, Credit, Banking.

description: Abstract
This study aims to analyze the role of internal audit in internal control in providing bank credit. The research method used is qualitative. The results showed that internal audit is a monitoring element of the internal control structure in an organization, which is designed to monitor the effectiveness of elements of the internal control structure. The purpose of the audit carried out by the internal auditor is to assist all company leaders (management) in carrying out their responsibilities by providing analysis, assessment, suggestions and comments regarding the activities they examine. Seven main principles of internal control, namely: 1) Clear assignment of responsibilities, 2) Administration of company records, 3) Insurance of company assets and employees, 3) Separation of equipment and storage of assets, 4) Separation of responsibilities for related transactions, 5) Implementation independent inspection, 6) Use of mechanical equipment whenever possible.
A Generalized Quantum Theory
Creators: name: Niestegge, Gerd
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81P10, 46L70

description: In quantum mechanics, the selfadjoint Hilbert space operators play a triple role as observables, generators of the dynamical groups and statistical operators defining the mixed states. One might expect that this is typical of Hilbert space quantum mechanics, but it is not. The same triple role occurs for the elements of a certain ordered Banach space in a much more general theory based upon quantum logics and a conditional probability calculus (which is a quantum logical model of the Lueders-von Neumann measurement process). It is shown how positive groups, automorphism groups, Lie algebras and statistical operators emerge from one major postulate - the non-existence of third-order interference (third-order interference and its impossibility in quantum mechanics were discovered by R. Sorkin in 1994). This again underlines the power of the combination of the conditional probability calculus with the postulate that there is no third-order interference. In two earlier papers, its impact on contextuality and nonlocality had already been revealed.
description: 14 pages, Found. Phys. 2014
Custom instrumentation for hydrology and water monitoring
Creators: name: Nigro, Matteo
Publisher: name: Zenodo
Year: 2023
Subjects: Open source
Hydrology logger

description: The detailed monitoring of any water body, both superficial water and groundwater, obviously requires dedicated field automated instrumentations. Moreover, the number of monitoring devices is often crucial for a good characterization of the observed water system. Often commercial devices require significant investments of money, which rapidly grow with the number of acquired parameters and device functionalities (such as solar recharger, GSM connectivity, etc). This limits the number of devices that can be used in such monitoring studies. Additionally, commercial options usually lack modularity, which may be necessary for adapting to different environments and monitoring objectives. Open-source electronics platforms offer both low-cost components and modularity of the devices. Particularly, the Arduino platform, an open-source and low-cost prototyping platform allows for building and developing versatile and effective water monitoring loggers. Moreover, due to its long presence on the market, the Arduino platform has a consistent community of users both from the hobbyist and the scientific world which represents a wide source of information and inspiration. In the present work, a few basic information about the microcontrollers and the Arduino board will be presented. Then we’ll report an example of an Arduino Nano board-based datalogger for monitoring water temperature and water level, with a particular focus on the hardware part of the logger and different sensor options.
Lattice Gerbe Theory
Creators: name: Lipstein, Arthur E.
name: Reid-Edwards, Ronald A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We formulate the theory of a 2-form gauge field on a Euclidean spacetime lattice. In this approach, the fundamental degrees of freedom live on the faces of the lattice, and the action can be constructed from the sum over Wilson surfaces associated with each fundamental cube of the lattice. If we take the gauge group to be $U(1)$, the theory reduces to the well-known abelian gerbe theory in the continuum limit. We also propose a very simple and natural non-abelian generalization with gauge group $U(N) \times U(N)$, which gives rise to $U(N)$ Yang-Mills theory upon dimensional reduction. Formulating the theory on a lattice has several other advantages. In particular, it is possible to compute many observables, such as the expectation value of Wilson surfaces, analytically at strong coupling and numerically for any value of the coupling.
description: 53 pages, 25 figures. Mathematica notebooks for numerically computing Wilson surfaces in 3d and 6d abelian gerbe theory using the heat bath algorithm are attached. References added. Published version
Pair double heavy diquark production in high energy proton-proton collisions
Creators: name: Martynenko, A. P.
name: Trunin, A. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: On the basis of perturbative QCD and relativistic quark model we calculate relativistic and bound state corrections in the production processes of a pair of double heavy diquarks. Relativistic factors in the production amplitude connected with the relative motion of heavy quarks and the transformation law of the bound state wave function to the reference frame of the moving S-wave diquark bound states are taken into account. For the gluon and quark propagators entering the amplitudes we use a truncated expansion in relative quark momenta up to the second order. Relativistic corrections to the quark-quark bound state wave functions in the rest frame are considered by means of the Breit-like potential. It turns out that the examined effects significantly decrease nonrelativistic cross sections.
description: 20 pages, 5 figures
Sequential Complexity as a Descriptor for Musical Similarity
Creators: name: Foster, Peter
name: Mauch, Matthias
name: Dixon, Simon
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: FOS: Computer and information sciences

description: We propose string compressibility as a descriptor of temporal structure in audio, for the purpose of determining musical similarity. Our descriptors are based on computing track-wise compression rates of quantised audio features, using multiple temporal resolutions and quantisation granularities. To verify that our descriptors capture musically relevant information, we incorporate our descriptors into similarity rating prediction and song year prediction tasks. We base our evaluation on a dataset of 15500 track excerpts of Western popular music, for which we obtain 7800 web-sourced pairwise similarity ratings. To assess the agreement among similarity ratings, we perform an evaluation under controlled conditions, obtaining a rank correlation of 0.33 between intersected sets of ratings. Combined with bag-of-features descriptors, we obtain performance gains of 31.1% and 10.9% for similarity rating prediction and song year prediction. For both tasks, analysis of selected descriptors reveals that representing features at multiple time scales benefits prediction accuracy.
description: 13 pages, 9 figures, 8 tables. Accepted version
Sensualization of Holy Scripture and Profanation of the Gospel: Unraveling the Neo-Paganistic Tapestry of Cacodemonic Christianity Culpable for the Assassination and Martyr of Christ, (I)
Creators: name: Clark, Tamah Jada
Publisher: name: figshare
Year: 2023
Subjects: Religion, society and culture
Religion curriculum and pedagogy
Philosophy of religion
History of religion
Studies in religious traditions (excl. Eastern, Jewish, Christian and Islamic traditions)
Jewish studies
Theology
Transnational history
Middle Eastern and North African history
Global Indigenous studies culture, language and history
Sub-Saharan African history
History of empires, imperialism and colonialism

description: It has oft been said that history is written by the victors of war. The Roman Catholic Church undoubtedly has an extensive chronology of brutal warfare, in addition to an expansive portfolio of religious and political conquests-- since antiquity. It has played a role in nearly every major conflict recorded in the annals of European, Middle Eastern, Asian, and African history. That is, the Church of Rome is perhaps the most fierce vanquisher of the Old World. Having amassed unfathomable wealth, and notorious for its unparalleled decadence with which the throne of its uniquely sovereign city-state is adorned to this day; aside from doctrine-based skepticism, the coherent intellect must consider: To what extent has the Church participated in the scripting of history?
Scaling of Clusters near Discontinuous Percolation Transitions in Hyperbolic Networks
Creators: name: Singh, Vijay
name: Boettcher, Stefan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the onset of the discontinuous percolation transition in small-world hyperbolic networks by studying the systems-size scaling of the typical largest cluster approaching the transition, $p\nearrow p_{c}$. To this end, we determine the average size of the largest cluster $\left\langle s_{\rm max}\right\rangle \sim N^{Ψ\left(p\right)}$ in the thermodynamic limit using real-space renormalization of cluster generating functions for bond and site percolation in several models of hyperbolic networks that provide exact results. We determine that all our models conform to the recently predicted behavior regarding the growth of the largest cluster, which found diverging, albeit sub-extensive, clusters spanning the system with finite probability well below $p_{c}$ and at most quadratic corrections to unity in $Ψ\left(p\right)$ for $p\nearrow p_{c}$. Our study suggest a large universality in the cluster formation on small-world hyperbolic networks and the potential for an alternative mechanism in the cluster formation dynamics at the onset of discontinuous percolation transitions.
description: Pages 12, For more information visit: http://www.physics.emory.edu/faculty/boettcher/
The Flavour of Natural SUSY
Creators: name: Brümmer, Felix
name: Kraml, Sabine
name: Kulkarni, Suchita
name: Smith, Christopher
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An inverted mass hierarchy in the squark sector, as in so-called "natural supersymmetry", requires non-universal boundary conditions at the mediation scale of supersymmetry breaking. We propose a formalism to define such boundary conditions in a basis-independent manner and apply it to generic scenarios where the third-generation squarks are light, while the first two generation squarks are heavy and near-degenerate. We show that not only is our formalism particularly well-suited to study such hierarchical squark mass patterns, but in addition the resulting soft terms at the TeV scale are manifestly compatible with the principle of minimal flavour violation, and thus automatically obey constraints from flavour physics.
description: 19 pages, 4 figures; v2: matches journal version
Rejoinder: "A significance test for the lasso"
Creators: name: Lockhart, Richard
name: Taylor, Jonathan
name: Tibshirani, Ryan J.
name: Tibshirani, Robert
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Rejoinder of "A significance test for the lasso" by Richard Lockhart, Jonathan Taylor, Ryan J. Tibshirani, Robert Tibshirani [arXiv:1301.7161].
description: Published in at http://dx.doi.org/10.1214/14-AOS1175REJ the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org). With Correction
Energy Transitions in Israel
Creators: name: Barnea, Ariel
Publisher: name: Unknown
Year: 2023
Subjects: subject: Holocaust
subject: communal living
subject: infrastructure
subject: economic development
subject: oil
subject: war
subject: American Dream
subject: climate change
subject: water
subject: Israel
subject: kitchen
subject: electrical appliances
subject: technology

description: Ariel Barnea interviews his grandfather, Benjamin Barnea, about the energy transformations he has witnessed during his lifetime. Ben, a Holocaust survivor, discusses his early life experiencing a pogrom in Romania in the 1930s, the family's deportation to a ghetto in Ukraine, and his immigration to Israel. He describes his time living and working on a kibbutz and serving in the Israeli army. He draws comparisons between Israel and the United States, noting the importance of consumption to the American Dream. Ben describes the gradual improvement of infrastructure in Israel as it became a "start-up nation," and the challenges the country faces both in the Middle East and from drought and climate change.
title: Методика выбора языка программирования на основе мягких моделей
title: Method for Selecting a Programming Language Based on Soft Models
Creators: name: Акперов, Гурру Имранович
name:  Александрова, Татьяна Сергеевна
name: Дегтярев, Владимир Владимирович
name: Храмов, Владимир Викторович
Publisher: name: Издательский центр СурГУ
Year: 2022

description: Предлагается методика выбора языка программирования для разработки средств поддержки управления образовательным процессом в региональном вузе, ориентированная на мягкие модели и вычисления. Показано, что в условиях «турбулентности» региональным вузам необходимо иметь дополнительный запас устойчивости при наличии значительного числа НЕ-факторов, влияющих как на сам учебный процесс, так и на его организацию. Рассмотрен вариант реализации заявлен-ной методики. Сделан вывод о том, что в условиях неопределенности в качестве программных средств предлагается использовать следующие языки программирования: DELPHI, Visual Basic, а также более востребованный в современных приложениях язык программирования Python.
description: The methodology for selecting a programming language is proposed to develop support tools for managing the educational process in a regional university, with focus on soft models and calcula-tions. The study shows that it is necessary to provide additional stability for a regional university in “turbu-lent” conditions in the case of a significant number of non-factors affecting both the educational process it-self and its management. The study presents an implementation of the method claimed. It is proposed to use the following programming languages under conditions of uncertainty: DELPHI, Visual Basic, and Python, the most common one in modern applications.
La computación paralela en la solución numérica de la ecuación no-lineal de advección-dispersión /
Creators: name: Aranda Alvarez, Juan Alberto
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: QA76.642 A73 1997

description: Con el objetivo general de analizar las ventajas de la computación en paralelo en la investigación de los procesos físicos, se parte de un programa FORTRAN de Wang y Anderson (1982) de la solución numérica de las ecuaciones de movimiento para el problema de advección-dispersión de un contaminante en un acuífero, usando el método de elemento finito y se desarrolla un programa en paralelo usando PVM con algunos elementos C++ que resuelve el mismo problema.
Towards an Economic Approach to Identity and Access Management Systems Using Decision Theory
Creators: name: Weishäupl, Eva
name: Kunz, Michael
name: Yasasin, Emrah
name: Wagner, Gerit
name: Prester, Julian
name: Schryen, Guido
name: Pernul, Günther
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Identity and Access Management; Economic Decision Making; Information Systems; Information Security Investment; Decision Theory
subject: 004 Informatik

description: Nowadays, providing employees with failure-free access to various systems, applications and services is a crucial factor for organizations’ success as disturbances potentially inhibit smooth workflows and thereby harm productivity. However, it is a challenging task to assign access rights to employees’ accounts within a satisfying time frame. In addition, the management of multiple accounts and identities can be very onerous and time consuming for the responsible administrator and therefore expensive for the organization. In order to meet these challenges, firms decide to invest in introducing an Identity and Access Management System (IAMS) that supports the organization by using policies to assign permissions to accounts, groups, and roles. In practice, since various versions of IAMSs exist, it is a challenging task to decide upon introduction of an IAMS. The following study proposes a first attempt of a decision support model for practitioners which considers four alternatives: Introduction of an IAMS with Role-based Access Control RBAC) or without and no introduction of IAMS again with or without RBAC. To underpin the practical applicability of the proposed model, we parametrize and operationalize it based on a real world use case using input from an expert interview.
title: World History Connected, Vol. 14 No. 1: Winter 2017
title: Winter 2017
titleType: AlternativeTitle
Creators: name: World History Connected
Publisher: name: World History Connected
Year: 2023

description: Stewart Gordon, Shackles of Iron: Slavery beyond the Atlantic Ross E. Dunn, Laura J. Mitchell, and Kerry Ward, eds., The New World History: A Field Guide for Teachers and Researchers. Second Edition Mark Philip Bradley, The World Reimagined: Americans and Human Rights in the Twentieth Century Hideaki Suzuki, Abolitions as a Global Experience Carla J. Mulford, Benjamin Franklin and the Ends of Empire Jurgen Kocka, Capitalism: A Short History Richard Foltz, Iran in World History Yasmin Khan. India at War: The Subcontinent and the Second World War Sarah K. Croucher, Capitalism and Cloves: An Archaeology of Plantation Life on Nineteenth-century Zanzibar John Cox, To Kill a People: Genocide in the Twentieth Century Vanessa Ogle, The Global Transformation of Time: 1870–1950 Digital Resources for Comparative Studies in World History Chersonesus Between Greece and Scythia New Biographies for Teaching African History Big Empire, Little Stories: Biography, Microhistory, and Eurasian History Gendered Metaphors: Historicizing Female Professionals in Early Twentieth-Century Brazil Illustrating Empire: A Soldier's Life and Trans-imperial Encounters in the Eighteenth Century Introduction: Moving Beyond the "Usual Suspects" Editor's Message
Finite Dimensional KP τ-functions I. Finite Grassmannians
Creators: name: Balogh, F.
name: Fonseca, T.
name: Harnad, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We study τ-functions of the KP hierarchy in terms of abelian group actions on finite dimensional Grassmannians, viewed as subquotients of the Hilbert space Grassmannians of Sato, Segal and Wilson. A determinantal formula of Gekhtman and Kasman involving exponentials of finite dimensional matrices is shown to follow naturally from such reductions. All reduced flows of exponential type generated by matrices with arbitrary nondegenerate Jordan forms are derived, both in the Grassmannian setting and within the fermionic operator formalism. A slightly more general determinantal formula involving resolvents of the matrices generating the flow, valid on the big cell of the Grassmannian, is also derived. An explicit expression is deduced for the Plücker coordinates appearing as coefficients in the Schur function expansion of the τ-function.
description: 45 pages. References updated
Gelation properties of amino-acid-based bis-urea compounds in organic solvents and in the presence of surfactants
Creators: name: Magdato, Kyra Danielle C.
name: Paderes, Monissa C.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Infectious Diseases
subject: FOS: Health sciences

description: Self-assembled systems based on low-molecular-weight gelators (LMWGs) and micelle-forming surfactants are stabilized by non-covalent and non-interfering interactions. The simultaneous self-assembly of LMWGs and surfactants in a solution could lead to the formation of fibrillar networks with encapsulated surfactant micelles. In this study, the gelation properties of amino-acid-derived low-molecular-weight bis-urea compounds in water, various organic solvents, and surfactant solutions, including anionic surfactants sodium dodecyl sulfate and dodecylbenzene sulfonic acid, cationic surfactant cetrimonium bromide, and nonionic surfactants polysorbate 80 and octyl-β-d-glucopyranoside, were investigated. In the presence of surfactants, the nature of the linker of the bis-urea compounds influences the aggregation between gelator molecules. Compounds with cyclic and aromatic linkers effectively form gels at surfactant concentrations above a critical micelle concentration (CMC). The different fiber morphologies observed for surfactant gels based on imaging analysis suggest that the structure of the bis-urea compounds influences self-assembly. Rheological measurements revealed the solid-like nature of the gels and their high thermal stability. The viscoelastic nature of the surfactant gels offers potential use in various commercial applications, including home care products.
Mononuclear photoluminescent salicylaldimato copper(II) complex: synthesis, characterization, mesomorphic investigation and DFT study
Creators: name: Pramanik, Harun A. R.
name: Kharpan, Bandashisha
name: Bhattacharya, Barnali
name: Bhattacharjee, Chira R.
name: Paul, Pradip C.
name: Sarkar, Utpal
name: Prasad, S. Krishna
name: Rao, D. S. Shankar
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Cancer

description: A new photoluminescent disc-like copper (II) metallomesogen of the type [CuL2] {H2L = 2,4-bis((E)-((4-(hexadecyloxy)phenyl)imino)methyl)phenol} have been synthesized. The compounds were characterized by elemental analyses, Fourier transform infrared spectroscopy (FTIR), 1H, 13C nuclear magnetic resonance (NMR), ultraviolet – visible spectroscopy (UV – Vis), thermogravimetric analysis (TGA) and high-resolution mass spectrometry. Mesomorphic behavior of the compounds was probed with the help of polarizing optical microscopy (POM) and differential scanning calorimetry (DSC). The organization of the molecules in the mesophase was investigated by X-ray diffraction techniques. The ligand is non-mesogenic but the copper complex exhibited thermally stable columnar mesophases at about 86°C. The copper complex is a blue-light emitter both in solution and in the solid state. The Density Functional Theory (DFT) study was carried out using 6–31 G (d, p) basis set with unrestricted B3LYP level to obtain a stable, optimized structure, which revealed a distorted square-planar geometry for the copper complexes.
Estudio comparativo de los diversos enfoques en la descripción del tunelaje resonante /
Creators: name: Lopez Dominguez, Julio Cesar
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: QC611.97 .T86 L66 1999

description: Se realizó un estudio comparativo del método de García-Calderón, Romo y Rubio para la descripción de los fenómenos del tunelaje resonante, con el método de Shao y Porod.
Functional renormalization group approach to neutron matter
Creators: name: Drews, Matthias
name: Weise, Wolfram
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The chiral nucleon-meson model, previously applied to systems with equal number of neutrons and protons, is extended to asymmetric nuclear matter. Fluctuations are included in the framework of the functional renormalization group. The equation of state for pure neutron matter is studied and compared to recent advanced many-body calculations. The chiral condensate in neutron matter is computed as a function of baryon density. It is found that, once fluctuations are incorporated, the chiral restoration transition for pure neutron matter is shifted to high densities, much beyond three times the density of normal nuclear matter.
description: 5 pages, 4 figures, to appear in Phys. Lett. B
A unified proof of Brooks' theorem and Catlin's theorem
Creators: name: Sivaraman, Vaidy
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15

description: We give a new proof of Brooks' theorem that immediately implies a strengthening of Brooks' theorem, known as Catlin's theorem.
description: Proof rewritten based on referee's report
Tunable double optomechanically induced transparency in an optomechanical system
Creators: name: Ma, Peng-Cheng
name: Zhang, Jian-Qi
name: Xiao, Yin
name: Feng, Mang
name: Zhang, Zhi-Ming
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dynamics of a driven optomechanical cavity coupled to a charged nanomechanical resonator via Coulomb interaction, in which the tunable double optomechanically induced transparency (OMIT) can be observed from the output field at the probe frequency by controlling the strength of the Coulomb interaction. We calculate the splitting of the two transparency windows, which varies near linearly with the Coulomb coupling strength in a robust way against the cavity decay. Our double-OMIT is much different from previously mentioned double-EIT and can be applied to measure Coulomb coupling strength.
description: 7Pages, 7 figures
Compuestos biológicamente activos de la esponja Chondrilla nucula /
Creators: name: Montiel Pichardo, Alfredo
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: QP517 .B44 M65 1999

description: Se llevaron a cabo tres colectas de la esponja marina Chondrilla nucula, esta se realizó en Bahía Concepción en la plata Santispac, Bsja California Sur, México.
Opportunistic Downlink Interference Alignment
Creators: name: Yang, Hyun Jong
name: Shin, Won-Yong
name: Jung, Bang Chul
name: Suh, Changho
name: Paulraj, Arogyaswami
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we propose an opportunistic downlink interference alignment (ODIA) for interference-limited cellular downlink, which intelligently combines user scheduling and downlink IA techniques. The proposed ODIA not only efficiently reduces the effect of inter-cell interference from other-cell base stations (BSs) but also eliminates intra-cell interference among spatial streams in the same cell. We show that the minimum number of users required to achieve a target degrees-of-freedom (DoF) can be fundamentally reduced, i.e., the fundamental user scaling law can be improved by using the ODIA, compared with the existing downlink IA schemes. In addition, we adopt a limited feedback strategy in the ODIA framework, and then analyze the required number of feedback bits leading to the same performance as that of the ODIA assuming perfect feedback. We also modify the original ODIA in order to further improve sum-rate, which achieves the optimal multiuser diversity gain, i.e., $\log \log N$, per spatial stream even in the presence of downlink inter-cell interference, where $N$ denotes the number of users in a cell. Simulation results show that the ODIA significantly outperforms existing interference management techniques in terms of sum-rate in realistic cellular environments. Note that the ODIA operates in a distributed and decoupled manner, while requiring no information exchange among BSs and no iterative beamformer optimization between BSs and users, thus leading to an easier implementation.
description: 25 pages, 6 figures, Submitted to IEEE Transactions on Signal Processing. Part of this paper is to be presented at the IEEE International Conference on Acoustics, Speech and Signal Processing, Florence, Italy, May 2014 and the IEEE International Symposium on Information Theory, Honolulu, HI, June/July 2014
AGN Type-casting: Mrk 590 No Longer Fits the Role
Creators: name: Denney, K. D.
name: De Rosa, G.
name: Croxall, K.
name: Gupta, A.
name: Bentz, M. C.
name: Fausnaugh, M. M.
name: Grier, C. J.
name: Martini, P.
name: Mathur, S.
name: Peterson, B. M.
name: Pogge, R. W.
name: Shappee, B. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present multi-wavelength observations that trace more than 40 years in the life of the active galactic nucleus (AGN) in Mrk 590, traditionally known as a classic Seyfert 1 galaxy. From spectra recently obtained from HST, Chandra, and the Large Binocular Telescope, we find that the activity in the nucleus of Mrk 590 has diminished so significantly that the continuum luminosity is a factor of 100 lower than the peak luminosity probed by our long baseline observations. Furthermore, the broad emission lines, once prominent in the UV/optical spectrum, have all but disappeared. Since AGN type is defined by the presence of broad emission lines in the optical spectrum, our observations demonstrate that Mrk 590 has now become a "changing look" AGN. If classified by recent optical spectra, Mrk 590 would be a Seyfert ~1.9-2, where the only broad emission line still visible in the optical spectrum is a weak component of Halpha. As an additional consequence of this change, we have definitively detected UV narrow-line components in a Type 1 AGN, allowing an analysis of these emission-line components with high-resolution COS spectra. These observations challenge the historical paradigm that AGN type is only a consequence of the line of sight viewing angle toward the nucleus in the presence of a geometrically-flattened, obscuring medium (i.e., the torus). Our data instead suggest that the current state of Mrk 590 is a consequence of the change in luminosity, which implies the black hole accretion rate has significantly decreased.
description: Accepted for publication in the Astrophysical Journal. This version includes minor modifications to the text and one figure in response to suggestions from the anonymous referee and members of the community
Seeking the balance: Patching double and exceptional field theories
Creators: name: Papadopoulos, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the patching of double and exceptional field theories. In double field theory the patching conditions imposed on the spacetime after solving the strong section condition imply that the 3-form field strength $H$ is exact. A similar conclusion can be reached for the form field strengths of exceptional field theories after some plausive assumptions are made on the relation between the transition functions of the additional coordinates and the patching data of the form field strengths. We illustrate the issues that arise, and explore several alternative options which include the introduction of C-folds and of the topological geometrisation condition.
description: substantial changes, section with example added, to appear in jhep, 24 pages
Evidence for Electroweak Production of $W^{\pm}W^{\pm}jj$ in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This Letter presents the first study of $W^{\pm}W^{\pm}jj$, same-electric-charge diboson production in association with two jets, using 20.3 fb$^{-1}$ of proton--proton collision data at $\sqrt{s}=8$ TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with two reconstructed same-charge leptons ($e^\pm e^\pm$, $e^\pm μ^\pm$, and $μ^\pm μ^\pm$) and two or more jets are analyzed. Production cross sections are measured in two fiducial regions, with different sensitivities to the electroweak and strong production mechanisms. First evidence for $W^{\pm}W^{\pm}jj$ production and electroweak-only $W^{\pm}W^{\pm}jj$ production is observed with a significance of $4.5$ and $3.6$ standard deviations respectively. The measured production cross sections are in agreement with Standard Model predictions. Limits at 95% confidence level are set on anomalous quartic gauge couplings.
description: 7 pages plus author list (20 pages total), 3 figures,2 tables, submitted to PRL, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2013-06/
Integration by parts and representation of information functionals
Creators: name: Nourdin, Ivan
name: Peccati, Giovanni
name: Swan, Yvik
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We introduce a new formalism for computing expectations of functionals of arbitrary random vectors, by using generalised integration by parts formulae. In doing so we extend recent representation formulae for the score function introduced in Nourdin, Peccati and Swan (JFA, to appear) and also provide a new proof of a central identity first discovered in Guo, Shamai, and Verd{ú} (IEEE Trans. Information Theory, 2005). We derive a representation for the standardized Fisher information of sums of i.i.d. random vectors which use our identities to provide rates of convergence in information theoretic central limit theorems (both in Fisher information distance and in relative entropy).
description: Accepted for publication in the Proceedings of the 2014 IEEE International Symposium on Information Theory