cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Submodular Approach for Electricity Distribution Network Reconfiguration
Creators: name: Khodabakhsh, Ali
name: Yang, Ger
name: Basu, Soumya
name: Nikolova, Evdokia
name: Caramanis, Michael C.
name: Lianeas, Thanasis
name: Pountourakis, Emmanouil
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Distribution network reconfiguration (DNR) is a tool used by operators to balance line load flows and mitigate losses. As distributed generation and flexible load adoption increases, the impact of DNR on the security, efficiency, and reliability of the grid will increase as well. Today, heuristic-based actions like branch exchange are routinely taken, with no theoretical guarantee of their optimality. This paper considers loss minimization via DNR, which changes the on/off status of switches in the network. The goal is to ensure a radial final configuration (called a spanning tree in the algorithms literature) that spans all network buses and connects them to the substation (called the root of the tree) through a single path. We prove that the associated combinatorial optimization problem is strongly NP-hard and thus likely cannot be solved efficiently. We formulate the loss minimization problem as a supermodular function minimization under a single matroid basis constraint, and use existing algorithms to propose a polynomial time local search algorithm for the DNR problem at hand and derive performance bounds. We show that our algorithm is equivalent to the extensively used branch exchange algorithm, for which, to the best of our knowledge, we pioneer in proposing a theoretical performance bound. Finally, we use a 33-bus network to compare our algorithm's performance to several algorithms published in the literature.
description: 10 pages, 6 figures, to appear in 51st Hawaii International Conference on System Sciences (HICSS), Hawaii, USA, Jan. 3-6, 2018
Co-tunneling spin blockade observed in a three-terminal triple quantum dot
Creators: name: Noiri, A.
name: Takakura, T.
name: Obata, T.
name: Otsuka, T.
name: Nakajima, T.
name: Yoneda, J.
name: Tarucha, S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We prepare a triple quantum dot with a separate contact lead to each dot to study Pauli spin blockade in the tunnel-coupled three dots in a row. We measure the tunneling current flowing between the center dot and either the left or right dot with the left and right leads as a common source and the center lead as a drain. In the biased stability diagram, we establish Pauli spin blockade in the respective neighboring dots, with features similarly obtained in double quantum dot systems. We further realize Pauli spin blockade with two different conditions by tuning the inter-dot coupling gates: strong and weak inter-dot tunnel coupling regimes. In the strong-coupling regime we observe significant suppression of co-tunneling through the respective double dots due to Pauli spin blockade. We reveal the influence from the third dot in the triple dot device on this co-tunneling Pauli spin blockade and clarify that the co-tunneling Pauli spin blockade is lifted by the resonant coupling of excited states to the third dot level as well as spin exchange of the left and right dots with the adjacent reservoir.
A Short and Elementary Proof of the Two-sidedness of the Matrix-Inverse
Creators: name: Paparella, Pietro
Publisher: name: arXiv
Year: 2017
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics
subject: 15A09

description: An elementary proof of the two-sidedness of the matrix-inverse is given using only linear independence and the reduced row-echelon form of a matrix. In addition, it is shown that a matrix is invertible if and only if it is row-equivalent to the identity matrix without appealing to elementary matrices. This proof underscores the importance of a basis and provides a proof of the invertible matrix theorem.
description: To appear as a classroom-capsule in the The College Mathematics Journal
Accelerator and reactor complementarity in coherent neutrino scattering
Creators: name: Dent, James B.
name: Dutta, Bhaskar
name: Liao, Shu
name: Newstead, Jayden L.
name: Strigari, Louis E.
name: Walker, Joel W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the complementarity between accelerator and reactor coherent elastic neutrino-nucleus elastic scattering (CE$ν$NS) experiments for constraining new physics in the form of non-standard neutrino interactions (NSI). Firstly, considering just data from the recent observation by the COHERENT experiment, we explore interpretive degeneracies that emerge when activating either two or four unknown NSI parameters. Next, we demonstrate that simultaneous treatment of reactor and accelerator experiments, each employing at least two distinct target materials, can break a degeneracy between up and down flavor-diagonal NSI terms that survives analysis of neutrino oscillation experiments. Considering four flavor-diagonal ($ee/μμ$) up and down-type NSI parameters, we find that all terms can be measured with high local precision (to a width as small as $\sim$5\% in Fermi units) by next-generation experiments, although discrete reflection ambiguities persist.
description: 20 pages, 8 figures
Beam steering with dielectric metalattices
Creators: name: Liu, Wei
name: Miroshnichenko, Andrey E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study optical wave manipulations through high-index dielectric metalattices in both diffractionless metasurface and diffractive metagrating regimes. It is shown that the collective lattice couplings can be employed to tune the excitation efficiencies of all electric and magnetic multipoles of various orders supported by each particle within the metalattice. The interferences of those adjusted multipoles lead to highly asymmetric angular scattering patterns that are totally different from those of isolated particles, which subsequently enables flexible beam manipulations, including perfect reflection, perfect transmission and efficient large-angle beam steering. The revealed functioning mechanism of manipulated interplays between lattice couplings and multipolar interferences can shed a new light on both photonic branches of metasurfaces and metagratings, which can potentially inspire many advanced applications related to optical beam controls.
description: 29 pages, 7 figures and comments welcomed
Photoproduction of pions and etas in nuclei
Creators: name: Effenberger, M.
name: Hombach, A.
name: Teis, S.
name: Mosel, U.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the cross sections for inclusive one-pion, two-pion and eta photoproduction in nuclei in the photon energy range from 300 MeV to 900 MeV within the framework of a semi-classical BUU transport model. Our results are compared with existing experimental data and discussed with respect to a calculation of the total photoabsorption cross section.
description: 30 pages LaTeX including 13 postscript figures
Additional file 1 of Efficacy of adjuvant treatment for fracture nonunion/delayed union: a network meta-analysis of randomized controlled trials
Creators: name: Yang, Jun
name: Zhang, Xiangmin
name: Liang, Wangbo
name: Chen, Guo
name: Ma, Yanbo
name: Zhou, Yonghua
name: Fen, Rong
name: Jiang, Kaichang
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Cell Biology
Biotechnology
Cancer
Science Policy

description: Additional file 1.
Statistical Methods to Evaluate Geographically-Targeted Economic Development Programs
Creators: name: Bondonio, Daniele
Publisher: name: Carnegie Mellon University
Year: 2000
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: In recent years an increasing amount of efforts has been devoted to the evaluation of geographically-targeted economic development (GTED) programs. In the U.S. and in Great Britain, geographically-targeted business incentives (denominated Enterprise Zone programs) are an important policy instrument to revitalize local communities. Within the E.U., interest on the evaluation of GTED programs is fueled by the number of development programs cofunded by the European Regional Development Fund, the European Social Fund and the European Agricultural Guidance and Guarantee Fund. The surging interest for the evaluation of GTED programs is challenged by the difficulty to assess the causality link between the program intervention and the observed changes in the economic outcomes of interest. Evaluating GTED programs is a difficult task because it requires the evaluator to distinguish changes due to the program from changes due to the many factors independent from the program intervention. Such a task is particularly difficult also due to the lack of experimental data available to the evaluator. This paper illustrates the sources of the potential biases that can affect impact estimates of GTED programs, and develop a number of statistical methods that control for such sources. The proposed methods are then grouped and sorted out in a decision tree algorithm that provides guidance to select the most appropriate methodology for the analysis, based on the program characteristics and on the type of data available. An evaluation of the impact of the U.S. Enterprise Zones on local employment concludes the paper as an empirical application of the methods and the decision tree algorithm proposed. This application highlights how seriously distorted impact estimates can be when they are obtained using unsophisticated tools for the analysis. The methods proposed in the paper proved instead to be effective tools to avoid these distortions.
Statistical Data Stewardship in the 21st Century: An Academic Perspective
Creators: name: Duncan, George
Publisher: name: Carnegie Mellon University
Year: 2002
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: This paper presents an academic perspective on a broad spectrum of ideas and best practices for statistical data collectors to ensure proper stewardship for personal information that they collect, process and disseminate. Academic researchers in confidentiality address statistical data stewardship both because of its inherent importance to society and because the mathematical and statistical problems that arise challenge their creativity and capability. To provide a factual basis for policy decisions, an information organization (IO) engages in a two-stage process: (1) It gathers sensitive personal and proprietary data of value for analysis from respondents who depend on the IO for confidentiality protection. (2) From these data, it develops and disseminates data products that are both useful and have low risk of confidentiality disclosure. The IO is a broker between the respondent who has a primary concern for confidentiality protection and the data user who has a primary concern for the utility of the data. This inherent tension is difficult to resolve because deidentification of the data is generally inadequate to protect their confidentiality against attack by a data snooper. Effective stewardship of statistical data requires restricted access or restricted data procedures. In developing restricted data, IOs apply disclosure limitation techniques to the original data. Desirably, the resulting restricted data have both high data utility U to users (analytically valid data) and low disclosure risk R (safe data). This paper explores the promise of the R-U confidentiality map, a chart that traces the impact on R and U of changes in the parameters of a disclosure limitation procedure. Theory for the R-U confidentiality map is developed for additive noise. By an implementation through simulation methods, an IO can develop an empirical R-U confidentiality map. Disclosure limitation for tabular data is discussed and a new method, called cyclic perturbation, is introduced. The challenges posed by on-line access are explored.
Non-Minimal String Corrections And Supergravity
Creators: name: Bellucci, S.
name: O'Reilly, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We reconsider the well-known issue of string corrections to Supergravity theory. Our treatment is carried out to second order in the string slope parameter. We establish a procedure for solving the Bianchi identities in the non minimal case, and we solve a long standing problem in the perturbative expansion of D=10, N=1 string corrected Supergravity, obtaining the H sector tensors, torsions and curvatures.
description: 19 pages, PACS number: 04.65.+e
X-ray spectral features from GRBs: Predictions of progenitor models
Creators: name: Boettcher, M.
name: Fryer, C. L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the potentially observable prompt or delayed X-ray spectral features from the currently popular gamma-ray burst (GRB) models. During the evolution of many GRB progenitors, a disk around the central GRB source is produced. Shock heating as the GRB ejecta collide with the disk may produce observable X-ray features. We first summarize predictions deduced from previous calculations which invoke photoionization and relativistic blast waves. We then calculate the quasi-thermal X-ray line features produced assuming the ejecta are nonrelativistic (which is more likely for the disk interactions of many GRB models). In the framework of the Hypernova/Collapsar model, delayed (a few days - several months after the GRB) bursts of line-dominated, thermal X-ray emission may be expected. The He-merger scenario predicts similar X-ray emission line bursts
description: 20 pages, including 8 figures and 3 tables. Uses epsf.sty, rotate.sty. Final version, accepted for publication in to ApJ. Revised analytical estimate of maximum emission line luminosity. Numerical results and conclusions unchanged
Zeuxia bohemani Rondani 1862
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sarcophagidae
Zeuxia
Zeuxia bohemani

description: Zeuxia bohemani Rondani, 1862
ORIGINAL DESCRIPTION: 1862c: 142 (key), 144 (description).
 TYPE LOCALITY: “ in Dalecarlia [= Dalarna (Sweden)]” (Zetterstedt 1844: 1279) [locality for Dexia cristata Meigen, 1826 sensu Zetterstedt (1844)]; “ in Insubria … in Pedemontio [Insubria (= Lombardy) … Piedmont (Italy)]” (Rondani 1862c: 144) [type locality for Zeuxia bohemani Rondani, 1862].
 TYPE MATERIAL: 1 ♀, lectotype (MZUF: Box C): Zeuxia Meign. / Zeuxia bohemani 360 ♀ R., Alpi / Lectotype ♀ Zeuxia bohemani Rondani, 1862, Cerretti and Tschorsnig des. 2011 / Estheria bohemani (Rondani, 1862), Cerretti & Tschorsnig det. 2011 / 393 360.
 PARALECTOTYPES EXAMINED: 2 ♀♀ (MZUF: Box 18): Zeuxia Mgn. / bohemani Rnd., ♀.
 PARALECTOTYPES NOT EXAMINED: 1 ♀ (missing left fore-, hind- and right mid-legs) (MSNC: Box DIPTERA Ex collezione Rondani - I): Zeuxia bohemani R. 184 ♀ Pedem. [= Piedmont] / Coll. Rondani, scatola n° 2, posiz. H-13 / Museo di Storia Naturale Università di Pisa, Calci (PI) ex collezione Rondani; 1 ♀ (NHRS: General Collection): Estheria bohemani (Rondani, 1862) / bohemani R. / Dlc. [= Dalecarnia (= Dalarna, Sweden)] / Bhn [= Boheman] / Estheria bohemani (Rondani) # det. C. Bergström 2001.
 CURRENT STATUS: valid species, as Estheria bohemani (Herting & Dely-Draskovits 1993: 363, Pape et al. 1995: 28, Cerretti 2010: 436, O’Hara et al. 2020: 46).
 REMARKS: Rondani (1862c: 144) proposed Zeuxia bohemani for Dexia cristata Meigen, 1826 sensu Zetterstedt (1844: 1279), which he considered a new species. Rondani referred to Zetterstedt’s redescription of Dexia cristata, which was based on an unspecified number of specimens, and to an unspecified number of females received from G. De Cristoforis, G. Galezzi, M. Spinola and L. Bellardi. Zetterstedt (1844: 1279) indicated having studied a single female collected by E. Boheman. Therefore, the type material is in the collections of Boheman (NHRS) and Rondani (MZUF). Cerretti & Tschorsnig (2012: 272) designated a lectotype (♀) and paralectotypes (2 ♀♀) in the MZUF, but did not mention an additional two females: one in the MSNC and one in the NHRS (both of these additional specimens are paralectotypes).
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on pages 362-363, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Electronic States of Graphene Nanoribbons
Creators: name: Brey, L.
name: Fertig, H. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the electronic states of narrow graphene ribbons (``nanoribbons'') with zigzag and armchair edges. The finite width of these systems breaks the spectrum into an infinite set of bands, which we demonstrate can be quantitatively understood using the Dirac equation with appropriate boundary conditions. For the zigzag nanoribbon we demonstrate that the boundary condition allows a particle- and a hole-like band with evanescent wavefunctions confined to the surfaces, which continuously turn into the well-known zero energy surface states as the width gets large. For armchair edges, we show that the boundary condition leads to admixing of valley states, and the band structure is metallic when the width of the sample in lattice constant units is divisible by 3, and insulating otherwise. A comparison of the wavefunctions and energies from tight-binding calculations and solutions of the Dirac equations yields quantitative agreement for all but the narrowest ribbons.
description: 5 pages, 6 figures
Static and Dynamic Pricing in Online Markets: Evidence from Books
Creators: name: Clay, Karen
name: Smith, Michael
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Commentators have observed that the ease of monitoring competitors on the Internet may allow Internet retailers to engage in non-competitive pricing. Using data on the daily prices of 399 books at 26 online bookstores between August 1999 and January 2000, we investigate firm pricing behavior in the online book market. Although sales in the Internet channel were growing very rapidly at the time, we find that relative prices differed across the three categories of bookstores (big three, active fringe, and inactive fringe), and these differences were remarkably stable over time. We present a simple model in which cross-channel competition and differentially informed consumers lead to the observed (static) pricing patterns. Although relative prices were stable, prices did change and were on average increasing over time. We document the dynamic strategic interaction across firm categories and across individual firms. Ten pairs of firms involving seven individual firms changed prices in the same direction on the same book within three days in an (one standard deviation) above average number of cases and respond more than 25 percent of the time to competitors’ price changes. Given the behavior of these firms and the large market shares held by the top three firms, we formally test a number of oligopoly and non-oligopoly explanations for the observed price changes. We find that the observed patterns were not consistent with the predictions of oligopoly pricing in the Haltiwanger and Harrington (1991) model or with other explanations such as customer loyalty, inventory considerations or changes in elasticity of demand associated with holidays. We conjecture that the observed cases of parallel pricing were largely attributable to experimentation on the part of the initiator and learning or competitive response on the part of the responder.
Coherent Signal Amplification in Bistable Nanomechanical Oscillators by Stochastic Resonance
Creators: name: Badzey, R. L.
name: Mohanty, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Stochastic resonance is a counter-intuitive concept[1,2], ; the addition of noise to a noisy system induces coherent amplification of its response. First suggested as a mechanism for the cyclic recurrence of ice ages, stochastic resonance has been seen in a wide variety of macroscopic physical systems: bistable ring lasers[3], SQUIDs[4,5], magnetoelastic ribbons[6], and neurophysiological systems such as the receptors in crickets[7] and crayfish[8]. Although it is fundamentally important as a mechanism of coherent signal amplification, stochastic resonance is yet to be observed in nanoscale systems. Here we report the observation of stochastic resonance in bistable nanomechanical silicon oscillators, which can play an important role in the realization of controllable high-speed nanomechanical memory cells. Our nanomechanical systems were excited into a dynamic bistable state and modulated in order to induce controllable switching; the addition of white noise showed a marked amplification of the signal strength. Stochastic resonance in nanomechanical systems paves the way for exploring macroscopic quantum coherence and tunneling, and controlling nanoscale quantum systems for their eventual use as robust quantum logic devices.
description: 18 pages, 4 figures
State Taxation of Internet Activities: What Role for the Federal Government?
Creators: name: Strauss, Robert
Publisher: name: Carnegie Mellon University
Year: 2001
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Heinz College paper
Relación burlesca de don Juan Ferlaque francés: Digital edition
Creators: name: Leblanc Elina
Publisher: name: Zenodo
Year: 2024
Subjects: Spanish literature
Digital edition
XML-TEI

description: Digital edition of a Spanish pliego de cordel, published by the Andalusian printer José María Moreno (19th c.). It contains the XML-TEI file of the edition, as well as the files that led to this edition, i.e. the digital facsimiles (raw and retouched), and the transcription produced by the OCR tool Transkribus (PAGE-XML). This digital edition is a part of the research project Desenrollando el cordel / Untangling the cordel / Démêler le cordel (2020-2024), led by professor Constance Carta at the University of Geneva and supported by the philanthropic Sandoz-Monique de Meuron Family Foundation.
Dibaryon Condensate in Nuclear Matter and Neutron Stars: Exact Analysis in One-Dimensional Models
Creators: name: Buchmann, A. J.
name: Faessler, Amand
name: Krivoruchenko, M. I.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate dense nuclear matter with a dibaryon Bose-Einstein condensate as a possible intermediate state before the quark-gluon phase transition. An exact analysis of this state of matter is presented in a one-dimensional model. The analysis is based on a reduction of the quantization rules for the N-body problem to N coupled algebraic transcendental equations. We observe that when the Fermi momentum approaches the resonance momentum, the one-particle distribution function increases near the Fermi surface. When the Fermi momentum is increased beyond the resonance momentum, the equation of state becomes softer. The observed behavior can be interpreted in terms of formation of a Bose-Einstein condensate of two-fermion resonances (dibaryons). In cold nuclear matter, it should occur if 2(m_N + epsilon_F) is greater or equal to m_D, where m_N and m_D are respectively the nucleon and dibaryon masses and epsilon_F is the nucleon Fermi energy.
description: 25 pages, LaTeX, 2 Postscript figures, to appear in Annals of Physics
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VI, Cart. 190 (11 H 75), 316 folios, f. 0019r
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/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VI, Archives départementales de la Côte-d'Or, Cart. 190 (11 H 75), 316 folios, f. 0019r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VI, Archives départementales de la Côte-d'Or, Cart. 190 (11 H 75), 316 folios, f. 0019r, 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
Linear Systems over Join-Blank Algebras
Creators: name: Jananthan, Hayden
name: Kim, Suna
name: Kepner, Jeremy
Publisher: name: arXiv
Year: 2017
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: A central problem of linear algebra is solving linear systems. Regarding linear systems as equations over general semirings (V,otimes,oplus,0,1) instead of rings or fields makes traditional approaches impossible. Earlier work shows that the solution space X(A;w) of the linear system Av = w over the class of semirings called join-blank algebras is a union of closed intervals (in the product order) with a common terminal point. In the smaller class of max-blank algebras, the additional hypothesis that the solution spaces of the 1x1 systems Av = w are closed intervals implies that X(A;w) is a finite union of closed intervals. We examine the general case, proving that without this additional hypothesis, we can still make X(A;w) into a finite union of quasi-intervals.
Exact Solutions of the Klein-Gordon Equation in the Presence of a Dyon, Magnetic Flux and Scalar Potential in the Specetime of Gravitational Defects
Creators: name: de Oliveira, A. L. Cavalcanti
name: de Mello, E. R. Bezerra
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we analyse the relativistic quantum motion of a charged spin-0 particle in the presence of a dyon, Aharonov-Bohm magnetic field and scalar potential, in the spacetimes produced by an idealized cosmic string and global monopole. In order to develop this analysis, we assume that the dyon and the Aharonov-Bohm magnetic field are superposed to both gravitational defects. Two distinct configurations for the scalar potential, $S(r)$, are considered: $i)$ the potential proportional to the inverse of the radial distance, i.e., $S\propto1/r$, and $ii)$ the potential proportional to this distance, i.e., $S\propto r$. For both cases the center of the potentials coincide with the dyon's position. In the case of the cosmic string the Aharonov-Bohm magnetic field is considered along the defect, and for the global monopole this magnetic field pierces the defect. The energy spectra are computed for both cases and explicitly shown their dependence on the electrostatic and scalar coupling constants. Also we analyse scattering states of the Klein-Gordon equations, and show how the phase shifts depend on the geometry of the spacetime and on the coupling constants parameter.
description: To be published in CQG. Minor comments added
Standards Competition in the Presence of Digital Conversion Technology: An Empirical Analysis of the Flash Memory Card Market
Creators: name: Liu, Charles Z.
name: Kemerer, Chris F.
name: Slaughter, Sandra A.
name: Smith, Michael
Publisher: name: Carnegie Mellon University
Year: 2010
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Theoretical and empirical evidence suggest that in many markets with standards competition, network effects make the strong grow stronger and can “tip” the market toward a single, winner-take-all standard. We hypothesize, however, that this sort of standards-induced market dominance may be less common in the context of digital systems, where the presence of low cost conversion technologies may facilitate easy compatibility across competing standards. We empirically test our hypotheses in the context of the digital flash memory card market. We first test for the presence of network effects in this market, and find that network effects strongly influence competition between flash memory standards. We then analyze whether these network effects are moderated by the adoption of digital converters, and find that the availability of digital converters provides a measurable reduction in the price premium of the leading flash card formats relative to that of formats with lower market shares. These market dynamics imply that producers of non-dominant digital goods standards are better off with the provision of conversion technology, as this technology tends to neutralize the impact of network effects. In addition, further analysis shows that market concentration in the flash memory market decreases as converters become more widely available.
Nonmonotonic magnetoresistance of a two-dimensional viscous electron-hole fluid in a confined geometry
Creators: name: Alekseev, P. S.
name: Dmitriev, A. P.
name: Gornyi, I. V.
name: Kachorovskii, V. Yu.
name: Narozhny, B. N.
name: Titov, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Ultra-pure conductors may exhibit hydrodynamic transport where the collective motion of charge carriers resembles the flow of a viscous fluid. In a confined geometry (e.g., in ultra-high quality nanostructures) the electronic fluid assumes a Poiseuille-like flow. Applying an external magnetic field tends to diminish viscous effects leading to large negative magnetoresistance. In two-component systems near charge neutrality the hydrodynamic flow of charge carriers is strongly affected by the mutual friction between the two constituents. At low fields, the magnetoresistance is negative, however at high fields the interplay between electron-hole scattering, recombination, and viscosity results in a dramatic change of the flow profile: the magnetoresistance changes its sign and eventually becomes linear in very high fields. This novel non-monotonic magnetoresistance can be used as a fingerprint to detect viscous flow in two-component conducting systems.
description: 10 pages, 8 figures
Spreadsheet Errors and Decision Making: Evidence from Field Interviews
Creators: name: Caulkins, Jonathan
name: Morrison, Erica Layne
name: Weidemann, Timothy
Publisher: name: Carnegie Mellon University
Year: 2005
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: There is consensus in the literature that spreadsheets are both ubiquitous and error-prone, but little direct evidence concerning whether spreadsheet errors frequently lead to bad decision making. We interviewed 45 executives and senior managers/analysts in the private, public, and non-profit sectors about their experiences with spreadsheet errors and quality control procedures. Differences across sectors do not seem pronounced. Almost all respondents report that spreadsheet errors are common. Most can report instances in which the errors directly led to losses or bad decisions, but opinions differ as to whether the consequences of spreadsheet errors are severe. Error checking and quality control procedures are in most cases informal. A significant minority of respondents believe such ad hoc processes are sufficient because the “human in the loop” can detect any gross errors. Others thought more formal spreadsheet quality control processes could be beneficial.
Scalar Fields, Hierarchical UV/IR Mixing and The Weak Gravity Conjecture
Creators: name: Lust, Dieter
name: Palti, Eran
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Weak Gravity Conjecture (WGC) bounds the mass of a particle by its charge. It is expected that this bound can not be below the ultraviolet cut-off scale of the effective theory. Recently, an extension of the WGC was proposed in the presence of scalar fields. We show that this more general version can bound the mass of a particle to be arbitrarily far below the ultraviolet cut-off of the effective theory. It therefore manifests a form of hierarchical UV/IR mixing. This has possible implications for naturalness. We also present new evidence for the proposed contribution of scalar fields to the WGC by showing that it matches the results of dimensional reduction. In such a setup the UV/IR mixing is tied to the interaction between the WGC and non-local gauge operators.
description: 22 pages. v2: Added clarifying details and a comment on neutrino bound states
Spreadsheet Errors and Decision Making: Evidence from Field Interviews
Creators: name: Caulkins, Jonathan P.
name: Morrison, Erika Layne
name: Weidemann, Timothy
Publisher: name: Carnegie Mellon University
Year: 2005
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: There is consensus in the literature that spreadsheets are both ubiquitous and error-prone, but little direct evidence concerning whether spreadsheet errors frequently lead to bad decision making. We interviewed 45 executives and senior managers/analysts in the private, public, and non-profit sectors about their experiences with spreadsheet errors and quality control procedures. Differences across sectors do not seem pronounced. Almost all respondents report that spreadsheet errors are common. Most can report instances in which the errors directly led to losses or bad decisions, but opinions differ as to whether the consequences of spreadsheet errors are severe. Error checking and quality control procedures are in most cases informal. A significant minority of respondents believe such ad hoc processes are sufficient because the “human in the loop” can detect any gross errors. Others thought more formal spreadsheet quality control processes could be beneficial.
Relación burlesca de don Juan Ferlaque francés: Digital edition
Creators: name: Leblanc Elina
Publisher: name: Zenodo
Year: 2021
Subjects: Spanish literature
Digital edition
XML-TEI

description: Digital edition of a Spanish pliego de cordel, published by the Andalusian printer José María Moreno (19th c.). It contains the XML-TEI file of the edition, as well as the files that led to this edition, i.e. the digital facsimiles (raw and retouched), and the transcription produced by the OCR tool Transkribus (PAGE-XML). This digital edition is a part of the research project Desenrollando el cordel / Untangling the cordel / Démêler le cordel (2020-2022), led by the professor Constance Carta at the University of Geneva and supported by the philanthropic Sandoz-Monique de Meuron Family Foundation.
Relación burlesca de don Juan Ferlaque francés: Digital edition
Creators: name: Leblanc Elina
Publisher: name: Zenodo
Year: 2022
Subjects: Spanish literature
Digital edition
XML-TEI

description: Digital edition of a Spanish pliego de cordel, published by the Andalusian printer José María Moreno (19th c.). It contains the XML-TEI file of the edition, as well as the files that led to this edition, i.e. the digital facsimiles (raw and retouched), and the transcription produced by the OCR tool Transkribus (PAGE-XML). This digital edition is a part of the research project Desenrollando el cordel / Untangling the cordel / Démêler le cordel (2020-2024), led by the professor Constance Carta at the University of Geneva and supported by the philanthropic Sandoz-Monique de Meuron Family Foundation.
Optical and Infrared photometry of the type IIn SN 1998S:Days 11-146
Creators: name: Fassia, A.
name: Meikle, W. P. S.
name: Vacca, W. D.
name: Kemp, S. N.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present contemporaneous optical and infrared photometric observations of the type IIn SN 1998S covering the period between 11 and 146 days after discovery. The infrared data constitute the first ever infrared light curves of a type IIn supernova. We use blackbody and spline fits to the photometry to examine the luminosity evolution. During the first 2--3 months, the luminosity is dominated by the release of shock-deposited energy in the ejecta. After $\sim$100 days the luminosity is powered mostly by the deposition of radioactive decay energy from 0.15$\pm$0.05 M$_{\odot}$ of $^{56}$Ni which was produced in the explosion. We also report the discovery of an astonishingly high infrared (IR) excess, $K-L'=2.5$, that was present at day 130. We interpret this as being due to thermal emission from dust grains in the vicinity of the supernova. We argue that to produce such a high IR luminosity so soon after the explosion, the dust must be {\it pre-existing} and so is located in the circumstellar medium of the progenitor. The dust could be heated either by the UV/optical flash (IR echo) or by the X-rays from the interaction of the ejecta with the circumstellar material
description: (accepted in MNRAS, 12 pages, 9 figures, MNRAS style file included)
Zeuxia palumbii Rondani 1865
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sarcophagidae
Zeuxia
Zeuxia palumbii

description: Zeuxia palumbii Rondani, 1865
ORIGINAL DESCRIPTION:1865c: 226.
 TYPE LOCALITY: “ In Agro Panormitano [Palermo’s territory (Italy)]”.
 TYPE MATERIAL: 1 ♀, syntype (MZUF: Box 18): Zeuxia Mgn / palumbii Rnd., Sicil. [= Sicily] / 988.
 CURRENT STATUS: junior synonym of Zeuxia aberrans (Loew, 1847) (Herting & Dely-Draskovits 1993: 369).
 REMARKS: Rondani (1865c: 226) described Zeuxia palumbii from just the female sex, without specifying either the number or the length of the specimens, from material received from F. Minà Palumbo. We found one syntype in this study.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 363, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
QCD Sum Rules: Isospin Symmetry Breakings in Pion-Nucleon Couplings
Creators: name: Hwang, W-Y. P.
name: Yang, Ze-sen
name: Zhong, Y. S.
name: Zhou, Z. N.
name: Zhu, Shi-lin
Publisher: name: arXiv
Year: 1996
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We use the method of QCD sum rules in the presence of an external pion field to investigate isospin symmetry breakings in pion-nucleon couplings. Possible manifestations of such isospin symmetry breaking are examined in the context of low-energy nucleon-nucleon ($NN$) scattering. We discuss numerical results in relation to both the existing data and other theoretical predictions.
description: 14 pages, 4 figures (upon request), LateX
Spiny CACTOS: OSN Users Attitudes and Perceptions Towards Cryptographic Access Control Tools
Creators: name: Ero  Balsa
name: Brandimarte, Laura
name: Acquisti, Alessandro
name: Diaz, Claudia
name: Gurses, Seda
Publisher: name: Carnegie Mellon University
Year: 2014
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Cryptographic access control tools for online social networks (CACTOS) allow users to enforce their privacy settings online without relying on the social network provider or any other third party. Many such tools have been proposed in the literature, some of them implemented and currently publicly available, and yet they have seen poor or no adoption at all. In this paper we investigate which obstacles may be hindering the adoption of these tools. To this end, we perform a user study to inquire users about key issues related to the desirability and general perception of CACTOS. Our results suggest that, even if social network users would be potentially interested in these tools, several issues would effectively obstruct their adoption. Participants in our study perceived that CACTOS are a disproportionate means to protect their privacy online. This in turn may have been motivated by the explicit use of cryptography or the fact that users do not actually share on social networks the type of information they would feel the need to encrypt. Moreover, in this paper we point out to several key elements that are to be considered for the improvement and better usability of CACTOS.
Scattering Cross Section and Stability of Global Monopoles
Creators: name: Pitelli, J. P. M.
name: Barroso, V. S.
name: Richartz, Maurício
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the scattering of scalar waves propagating on the global monopole background. Since the scalar wave operator in this topological defect is not essentially self-adjoint, its solutions are not uniquely determined until a boundary condition at the origin is specified. As we show, this boundary condition manifests itself in the differential cross section and can be inferred by measuring the amplitude of the backscattered wave. We further demonstrate that whether or not the spacetime is stable under scalar perturbations also relies on the chosen boundary condition. In particular, we identify a class of such boundary conditions which significantly affects the differential cross section without introducing an instability.
description: 6 pages, 1 figure. To appear in Phys Rev D
Spatio-Temporal Forecasting of Crime: Application of Classical and Neural Network Methods
Creators: name: Olligschlaeger, Andreas
name: Wilpen  Gorr
Publisher: name: Carnegie Mellon University
Year: 1997
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: This paper introduces a new spatio-temporal forecasting methodology that combines artificial neural networks and cellular automata with GIS-based data. The technique, which we refer to as chaotic cellular forecasting (CCF) is similar to spatial adaptive filtering due to Foster and Gorr (1986) and weighted spatial adaptive filtering due to Gorr and Olligschlaeger (1994) in that it uses contiguity relationships and the geographer’s assumption that influence between data points decays with distance. As with spatial adaptive filtering the methodology uses an iterative process to arrive at a solution. Unlike spatial adaptive filtering, however, chaotic forecasting uses a gradient descent method rather than a grid search to find the optimal set of parameters (or, in the case of artificial neural networks, weights). In addition, and most importantly, CCF has the nonlinear and multi-model functional form commonly used in neural net modeling, allowing for increased pattern recognition and accommodation of spatio-temporal heterogeneity. The result is a robust spatio-temporal forecasting method that requires very little model specification, is self - adaptive and performs very well on data sets that exhibit non-traditional statistical behavior.
SMMM: A Metric Based Framework to Evaluate the Scalability of Multiple Model Methodologies
Creators: name: Akhilesh  Bajaj
Publisher: name: Carnegie Mellon University
Year: 2000
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Multiple Model Methodologies (MMM) have become ubiquitous in the area of conceptual modeling. Thus, the Unified Modeling Language (UML) is a popular MMM in software engineering, while MMMs are also used in enterprise modeling. Over the last few years, the size problem domains being modeled by MMMs has also grown. Thus, software is now bigger, and enterprises are significantly larger in scale than the problem domains modeled when building the legacy systems. These trends in the area of conceptual modeling raise an important question about the scalability of MMMs, as they are applied to domains of increasing size. In this work, we present a comprehensive, metric based framework called SMMM (Scalability of MMM). SMMM assumes that the only obstacle to the scalability of an MMM is the complexity that users face when using the MMM to create models of the underlying reality, as this reality grows in size. SMMM extends previous work in the area of complexity measurement in the following ways. First, SMMM is comprehensive, and yet parsimonious. Second, metrics in earlier works have made explicit assumptions about the relative cognitive difficulties of modeling different categories of concepts. SMMM makes no assumptions about any concept being harder to model than another. Third, previous work on metric development has omitted the role of empirical work in understanding complexity. The SMMM framework explicitly recognizes the role of empirical work in evaluating cognitive difficulty. Fourth, SMMM measures both intra-model and intermodel complexity. Intra-model complexity values show which models in the MMM are the source of complexity. Inter-model complexity values measure the complexity by the interaction between different models in the MMM.