cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lasing with Topological Weyl Semimetal
Creators: name: Oktay, Güneş
name: Sarisaman, Mustafa
name: Tas, Murat
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Lasing behavior of optically active planar topological Weyl semimetal (TWS) is investigated in view of the Kerr and Faraday rotations. Robust topological character of TWS is revealed by the presence of Weyl nodes and relevant surface conductivities. We focus our attention on the surfaces where no Fermi arcs are formed, and thus Maxwell equations contain topological terms. We explicitly demonstrate that two distinct lasing modes arise because of the presence of effective refractive indices which lead to the birefringence phenomena. Transfer matrix is constructed in such a way that reflection and transmission amplitudes involve $2\times2$ matrix-valued components describing the bimodal character of the TWS laser. We provide associated parameters of the topological laser system yielding the optimal impacts. We reveal that gain values corresponding to the lasing threshold display a quantized behavior, which occurs due to topological character of the system. Our proposal is supported by the corresponding graphical demonstrations. Our observations and predictions suggest a concrete way of forming TWS laser and coherent perfect absorber; and are awaited to be confirmed by an experimental realization based on our computations.
description: 17 pages, 9 figures, 3 tables
ESM from Reproductive skew affects social information use
Creators: name: Smolla, Marco
name: Rosher, Charlotte
name: R. Tucker Gilman
name: Shultz, Susanne
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60801 Animal Behaviour

description: Additional material
Poles and zeros of the scattering matrix associated to defect modes
Creators: name: Felbacq, Didier
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We analyze electromagnetic waves propagation in one-dimensional periodic media with single or periodic defects. The study is made both from the point of view of the modes and of the diffraction problem. We provide an explicit dispersion equation for the numerical calculation of the modes, and we establish a connection between modes and poles and zeros of the scattering matrix.
description: 6 pages (Revtex), no figures
title: EU-citizenship as a resource in marriages with women from less developed countries
title: an analysis of transnational assortative matching based on the German Socio- Economic Panel
titleType: Subtitle
Creators: name: Glowsky, David
Publisher: name: Freie Universität Berlin
Year: 2006
Subjects: subject: 300 Sozialwissenschaften

description: For people from economically weak countries, one possible way of migration to the European Union is marriage with a EU-citizen. This paper examines which factors lead to marriages between German men and women from countries which are less developed. Two hypotheses deduced from exchange theory and the economic theory of the family are tested: 1. Low physical and social attractiveness as well as reduced opportunities to meet German partners lead to marriage with a woman from a poorer country. 2. Because of the economic gap between their countries of origin, German men can marry comparatively more attractive women on the international marriage market than they could hope to attract within Germany. The analysis uses data from the German Socio-Economic Panel (GSOEP, 1984-2005). The results show that men with wives from poorer countries do not differ from men with German wives with regard to their attractiveness and social contacts. A better explanation for these marriages lies in the age-related “marriage squeeze” encountered by German men older than 30 years. Only on account of their age do these men struggle to find a spouse on the German marriage market, which in turn increases the likelihood of them seeking marriage with women from poorer countries. Furthermore, the results do offer strong evidence that the economic gap between their countries of origin does allow German men to marry more attractive women when they opt for partners from poorer countries.
title: The Role of AIS in Organisational Sustainability: An Empirical Study of Saudi Organisations
Creators: name: Al Barrak, Hesham M
Publisher: name: Griffith University
Year: 2013
Subjects: subject: Accounting information system (AIS)
subject: Sustainable organization
subject: Business, Saudi Arabia

description: Over the past 30 years, the concept of sustainability has attracted public attention all over the world, encouraging organisations to progressively seek sustainability. A sustainable organisation is basically an organisation that considers not only financial measures but also non-financial measures to manage its overall performance. The relevant literature suggests that the role of accounting information (AIS) is critical as it provides information on performance leading to facilitation of management decisions. However, the literature is unclear on the role of AIS in helping organisations to manage their sustainable organisational performance (SOP); this results in incomplete understanding of the relationship between AIS and SOP. The present study focused on addressing this gap in knowledge by investigating whether both the quality of AIS and managers' use of AIS information are associated with SOP. Additionally, this study investigated the role of two other independent variables in the relationship, family control of management and industry dynamism. 18 hypotheses were developed based on an integrative review of theories and studies relating to the variables in the research model.
Optimal Stopping under Model Ambiguity: a Time-Consistent Equilibrium Approach
Creators: name: Huang, Yu-Jui
name: Yu, Xiang
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: Optimization and Control (math.OC)
subject: FOS: Economics and business
subject: FOS: Mathematics
subject: 60G40, 91G80, 28A05

description: An unconventional approach for optimal stopping under model ambiguity is introduced. Besides ambiguity itself, we take into account how ambiguity-averse an agent is. This inclusion of ambiguity attitude, via an $α$-maxmin nonlinear expectation, renders the stopping problem time-inconsistent. We look for subgame perfect equilibrium stopping policies, formulated as fixed points of an operator. For a one-dimensional diffusion with drift and volatility uncertainty, we show that every equilibrium can be obtained through a fixed-point iteration. This allows us to capture much more diverse behavior, depending on an agent's ambiguity attitude, beyond the standard worst-case (or best-case) analysis. In a concrete example of real options valuation under volatility uncertainty, all equilibrium stopping policies, as well as the best one among them, are fully characterized. It demonstrates explicitly the effect of ambiguity attitude on decision making: the more ambiguity-averse, the more eager to stop -- so as to withdraw from the uncertain environment. The main result hinges on a delicate analysis of continuous sample paths in the canonical space and the capacity theory. To resolve measurability issues, a generalized measurable projection theorem, new to the literature, is also established.
Quanto dura un giorno su Venere?
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2021

Quanto dura con esattezza un giorno su Venere? Di quanto è inclinato il suo asse di rotazione? E quali sono le dimensioni del nucleo? Un team di astronomi guidato dall’Università della California a Los Angeles (Ucla) ha risposto a queste domande grazie ai dati ottenuti in 14 anni di osservazioni radar. Tutti i dettagli su Nature Astronomy
Fronts and interfaces in bistable extended mappings
Creators: name: Coutinho, R.
name: Fernandez, B.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the interfaces' time evolution in one-dimensional bistable extended dynamical systems with discrete time. The dynamics is governed by the competition between a local piece-wise affine bistable mapping and any couplings given by the convolution with a function of bounded variation. We prove the existence of travelling wave interfaces, namely fronts, and the uniqueness of the corresponding selected velocity and shape. This selected velocity is shown to be the propagating velocity for any interface, to depend continuously on the couplings and to increase with the symmetry parameter of the local nonlinearity. We apply the results to several examples including discrete and continuous couplings, and the planar fronts' dynamics in multi-dimensional Coupled Map Lattices. We eventually emphasize on the extension to other kinds of fronts and to a more general class of bistable extended mappings for which the couplings are allowed to be nonlinear and the local map to be smooth.
description: 27 pages, 3 figures, submitted to Nonlinearity
Extended log-normal method of moments for solving the population balance equation for Brownian coagulation
Creators: name: Wang, Kaiyuan
name: Yu, Suyuan
name: Peng, Wei
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: An extended log-normal method of moments (ELNMOM) is presented in this study for solving the population balance equation (PBE) for Brownian coagulation. The method is an extension of the log-normal method of moments (LNMOM) proposed by Lee in 1983. The ELNMOM uses the superposition of log-normal subdistributions to represent the size distribution. Unlike previous modal studies, the subdistributions are not independent modes but flexible components in this study and the closure of this method is achieved by introducing additional higher-order moment equations. Based on some simplifying assumptions, the ELNMOM is implemented with only four adjustable parameters for a preliminary exploration. The method is then validated by comparing the size distribution parameters predicted by this method with those predicted by the LNMOM and other numerical methods for Brownian coagulation in the continuum regime and the free-molecular regime. The results show that the ELNMOM more accurately predicts the total particle number concentration, the geometric standard deviation and the geometric mean particle volume than the LNMOM while not taking much more computation time. Copyright © 2019 American Association for Aerosol Research
Demographic and Psychiatric Correlates of Suicide Attempt in a Nationally Representative Sample
Creators: Rossi, Adam Joshua
Publisher: name: Columbia University
Year: 2019
Subjects: subject: Clinical psychology
subject: Psychiatry
subject: Suicidal behavior
subject: Demography
subject: FOS: Sociology

description: The increasing prevalence of suicidal behaviors in the United States inflicts massive emotional and economic costs in the United States (CDC, 2012). Efforts to detect and prevent these behaviors have not resulted in overall reduction of these costs, and could be enhanced with new approaches to assessing risk for specific suicide outcomes (Klonsky & May, 2014). Several contemporary theories of suicide make distinctions between suicide outcomes (i.e., suicidal ideation, suicide attempt, suicide death) that are often conflated in studies of suicide risk (Joiner, 2005; O'Connor & Kirtley, 2018). The present research, borne of these theories, sought to examine whether known demographic and psychiatric risk factors for suicide help distinguish between respondents of a nationally-representative survey measure, who reported either a history of suicidal ideation, a history of suicide attempt, or neither of these experiences. Significant differences were observed when comparing individuals reporting a history of attempt or ideation with individuals reporting no suicide history across many of these factors. Significant associations were also observed when comparing those reporting a history of ideation and those reporting a history of attempt, suggesting that these factors may provide some degree of incremental validity for the detection of risk, specifically for suicide attempt. Demographically, race/ethnicity and level of education yielded the most significant distinctions between those reporting a history of ideation and history of attempt. Psychiatrically, antisocial and borderline personality disorders and a history of mania yielded the most significant distinctions between those reporting a history of ideation and history of attempt. These results could be applied in developing screening measures for individuals at increased risk for making suicide attempts, which carry their own emotional and economic costs when not resulting in death, and are also highly associated with eventual mortality by suicide. These applications as well as study limitations will be discussed in detail.
$P$-wave contributions to $B_{(s)}\toψKπ$ decays in perturbative QCD approach
Creators: name: Li, Ya
name: Rui, Zhou
name: Xiao, Zhen-Jun
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we studied the quasi-two-body decays $B_{(s)} \to ψ[K^*(892), K^*(1410),$ $K^*(1680)] \to ψKπ$ by employing the perturbative QCD (PQCD) factorization approach, where the charmonia $ψ$ represents $J/ψ$ and $ψ(2S)$. The corresponding decay channels are studied by constructing the kaon-pion distribution amplitude (DA) $Φ_{K π}^{\rm P}$, which contained the important final state interactions between the kaon and pion in the resonant region. The relativistic Breit-Wigner formulas are adopted to parameterize the time-like form factor $F_{Kπ}$ appeared in the kaon-pion DAs. The SU(3) flavor symmetry breaking effect resulting from the mass difference between kaon and pion is taken into account, which makes significant contributions to the longitudinal polarizations. We accommodate well the observed branching ratios and the polarization fractions of the $B_{(s)} \to ψK^*(892) \to ψKπ$ by tuning the hadronic parameters for the kaon-pion DAs. The PQCD predictions for the $B_{(s)} \to ψ[K^*(1410), K^*(1680)] \to ψKπ$ modes from the same set of parameters can be tested by the future precise data from the LHCb and the Belle II experiments.
description: 18 pages, 3 figures, Final version to be published in Chinese Physics C
A semi-quantum version of the game of Life
Creators: name: Flitney, Adrian P.
name: Abbott, Derek
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A version of John Conway's game of Life is presented where the normal binary values of the cells are replaced by oscillators which can represent a superposition of states. The original game of Life is reproduced in the classical limit, but in general additional properties not seen in the original game are present that display some of the effects of a quantum mechanical Life. In particular, interference effects are seen.
description: RevTeX, 6 pages, 4 figures generated by LaTeX. Presented at the 9th International Symposium on Dynamic Games and Applications, Adelaide, Dec. 2000
Demolition and the Shrinking City: Philadelphia and Camden
Creators: Heo, Jean
Publisher: name: Columbia University
Year: 2014
Subjects: subject: City planning
subject: Demography
subject: FOS: Sociology
subject: Social structure

description: This research will compare the demolition policies and practices of two shrinking cities within one metropolitan statistical area—Philadelphia, Pennsylvania, and Camden, New Jersey. Both cities have experienced major population losses due to deindustrialization and outmigration, and despite their physical proximity, the current states of the two cities are vastly different, with Philadelphia having somewhat stabilized and showing recent upticks in population, while Camden continues to struggle. Both cities have an abundance of abandoned buildings, where demolition is not uncommon. This research, therefore, aims to understand how each cities’ demolition and vacancy policies have affected the current landscape, spatially, socially, economically, and how prominent, if at all, a “smart decline”-oriented framework has been in the implementation of such planning tools.
In so doing, the two research questions to be answered are: one, where does demolition occur—within what social, economic, and spatial contexts, using primarily GIS analysis; and two, to what extent do demolitions happen there, using regression analysis? The data analyses will be restricted to one 5-year time period, from 2008-2012, to correspond to the U.S. Census’ American Community Survey. The aim of answering the questions is central to understanding how actual demolition work and policy discourse stack up against each other, even within this short timeframe. The hope is that officials, researchers, and other scholars will see the importance of knowing both the short- and long-term impacts of demolition in shrinking cities, and how policies have shaped demolition practices, or how policies should be reworked to better reflect a city’s goals.
Camden suffers from mismanagement on the municipal, county, and state levels, which is reflected in both the GIS and regression analyses. Despite the optimistic rhetoric of recent policies, it appears that any demolition strategy fall to the wayside when funds are extremely limited and irregular, and when the city must respond to a great number of imminently dangerous buildings. Philadelphia, on the other, having fully addressed shrinkage, appears to have taken a two-pronged demolition strategy, which aims to address both public safety (imminently dangerous buildings) and site preparation and assemblage for future development.
Stress-Dependent Soil Modulus Subroutine from Numerical techniques for design calculations of longitudinal bending in buried steel pipes subjected to lateral Earth movements
Creators: name: Almahakeri, Mohamed
name: Moore, Ian D.
name: Fam, Amir
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: 90506 Structural Engineering
subject: FOS: Civil engineering
subject: 90599 Civil Engineering not elsewhere classified

description: Subroutine to calculate soil modulus as a as a power function of the confining stresses
title: Governance in Räumen begrenzter Staatlichkeit: neue Formen des Regierens?
title: Das Forschungsprogramm des Sonderforschungsbereichs 700 (SFB 700)
titleType: Subtitle
Creators: name: Risse, Thomas
name: Lehmkuhl, Ursula
Publisher: name: Freie Universität Berlin
Year: 2006
Subjects: subject: 300 Sozialwissenschaften::320 Politikwissenschaft::321 Staatsformen und Regierungssysteme

description: Governance ist zu einem zentralen Thema sozialwissenschaftlicher Forschung geworden. Dabei besteht Übereinstimmung, dass politische Gemeinwesen bestimmte Leistungen in den Bereichen Herrschaft, Sicherheit und Wohlfahrt erbringen sollen. In den Debatten wird aber oft „effektive Gebietsherrschaft“ als Kernelement moderner Staatlichkeit stillschweigend vorausgesetzt, und die Forschung konzentriert sich auf die OECD-Welt. In globaler sowie historischer Perspektive sind autoritative Entscheidungskompetenz und Gewaltmonopol des Staates jedoch die Ausnahme, nicht die Regel. Ein Blick auf die Länder des Südens, „zerfallen(d)e Staaten“ in den Krisenregionen der Welt oder ehemalige Kolonien bestätigt dies. Hier wird politisch gesteuert, ohne dass die vielfältigen Verfahren demokratischer und rechtsstaatlich organisierter Wohlfahrtsstaaten verfügbar wären. Der SFB 700 fragt daher nach den Bedingungen von Governance in diesen Räumen begrenzter Staatlichkeit: Wie und unter welchen Bedingungen werden Governance-Leistungen in den Bereichen Herrschaft, Sicherheit und Wohlfahrt in Räumen begrenzter Staatlichkeit erbracht, und welche Probleme entstehen dabei? Die SFB-Teilprojekte untersuchen, wie dort regiert wird und welche Probleme dabei entstehen. Dabei gehen wir davon aus, dass sich in Räumen begrenzter Staatlichkeit „neue“ Formen des Regierens herausbilden, die vorwiegend „weiche“ Steuerungsformen nutzen, auf vielfältigen Kooperationsformen zwischen staatlichen und nicht- staatlichen Akteuren basieren und durch eine Verschränkung von globalen, nationalen und lokalen Ebenen charakterisiert sind.
Are bootstrapped cointegration test findings unreliable?
Creators: name: Schreiber, Sven
Publisher: name: Freie Universität Berlin
Year: 2018
Subjects: subject: bootstrap
subject: cointegration rank test
subject: empirical size
subject: 300 Sozialwissenschaften::330 Wirtschaft

description: Applied time series research often faces the challenge that (a) potentially relevant variables are unobservable, (b) it is fundamentally uncertain which covariates are relevant. Thus cointegration is often analyzed in partial systems, ignoring potential (stationary) covariates. By simulating hypothesized larger systems Benati (2015) found that a nominally significant cointegration outcome using a bootstrapped rank test (Cavaliere, Rahbek, and Taylor, 2012) in the bivariate sub-system might be due to test size distortions. In this note we review this issue systematically. Apart from revisiting the partial-system results we also investigate alternative bootstrap test approaches in the larger system. Throughout we follow the given application of a long-run Phillips curve (euro-area inflation and unemployment). The methods that include the covariates do not reject the null of no cointegration, but by simulation we find that they display very low power, such that the (bivariate) partial-system approach is still preferred. The size distortions of all approaches are only mild when a standard HP- filtered output gap measure is used among the covariates. The bivariate trace test p-value of 0.027 (heteroskedasticity-consistent wild bootstrap) therefore still suggests rejection of non-cointegration at the 5% but not at the 1% significance level. The earlier findings of considerable test size distortions can be replicated when instead an output gap measure with different longer-run developments is used. This detrimental effect of large borderline-stationary roots reflects an earlier insight from the literature (Cavaliere, Rahbek, and Taylor, 2015).
FORECASTOR -- I. Finding Optics Requirements and Exposure times for the Cosmological Advanced Survey Telescope for Optical and UV Research mission
Creators: name: Cheng, Isaac
name: Woods, Tyrone E.
name: Côté, Patrick
name: Glover, Jennifer
name: Bansal, Dhananjhay
name: Amenouche, Melissa
name: Marshall, Madeline A.
name: Amen, Laurie
name: Hutchings, John
name: Ferrarese, Laura
name: Venn, Kim A.
name: Balogh, Michael
name: Blouin, Simon
name: Cloutier, Ryan
name: Dickson, Nolan
name: Gallagher, Sarah
name: Hellmich, Martin
name: Hénault-Brunet, Vincent
name: Khatu, Viraja
name: Lawlor-Forsyth, Cameron
name: Morgan, Cameron
name: Richer, Harvey
name: Sawicki, Marcin
name: Sorba, Robert
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Cosmological Advanced Survey Telescope for Optical and ultraviolet Research (CASTOR) is a proposed Canadian-led 1m-class space telescope that will carry out ultraviolet and blue-optical wide-field imaging, spectroscopy, and photometry. CASTOR will provide an essential bridge in the post-Hubble era, preventing a protracted UV-optical gap in space astronomy and enabling an enormous range of discovery opportunities from the solar system to the nature of the Cosmos, in conjunction with the other great wide-field observatories of the next decade (e.g., Euclid, Roman, Vera Rubin). FORECASTOR (Finding Optics Requirements and Exposure times for CASTOR) will supply a coordinated suite of mission-planning tools that will serve as the one-stop shop for proposal preparation, data reduction, and analysis for the CASTOR mission. We present the first of these tools: a pixel-based, user-friendly, extensible, multi-mission exposure time calculator (ETC) built in Python, including a modern browser-based graphical user interface that updates in real time. We then provide several illustrative examples of FORECASTOR's use that advance the design of planned legacy surveys for the CASTOR mission: a search for the most massive white dwarfs in the Magellanic Clouds; a study of the frequency of flaring activity in M stars, their distribution and impacts on habitability of exoplanets; mapping the proper motions of faint stars in the Milky Way; wide and deep galaxy surveys; and time-domain studies of active galactic nuclei.
description: Updated references and acknowledgements to match published version. 24 pages, 16 figures, 3 tables, published in AJ
Democratizing National Security: Implications of Human Security Framework on Human Rights and Civil Society in the Republic of Korea
Creators: Kim, Yoo Jin
Publisher: name: Columbia University
Year: 2017
Subjects: Human rights
National security
Civil society
Human security

description: This thesis analyzes the intersection among civil society, human rights, and national security narratives in the Republic of Korea. It first traces the evolution of civil society, human rights, and national security narratives in South Korea, followed by an examination of the aptness of current national security narratives and its impact on human rights and civil society. The thesis attempts to answer the following questions: first, what are the dominant national security narratives in contemporary South Korean society; second, what are the human rights implications of South Korea’s national security narratives; and third, what are the significance and role of South Korean civil society under a new security framework? Finally, it argues for a shift toward a new security framework, namely one based on human security and comprehensive security frameworks.
Democratic Infelicity: Speech, Authority and Disbelief in Malian Politics
Creators: Mendoza Rockwell, Elsa Natalia
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Political oratory
subject: Authority
subject: Speech acts (Linguistics)
subject: Democracy
subject: Africans
subject: Political science
subject: FOS: Political science
subject: Linguistics
subject: FOS: Languages and literature

description: This dissertation is an ethnographic study of institutional politics in postcolonial societies, in this case, contemporary Mali. It examines the ways in which transitions to democracy have transformed everyday politics not only through the creation of new institutional arrangements, but through the promotion of new understandings of social and political authority. In particular, this research examines the expectations that democratic institutions place on political deliberation and public speech, as well as the multiple ways in which democratic political speech has failed to fulfill those expectations. To address these questions, it combines Linguistic and Political Anthropology in the analysis of everyday discussions that took place in institutions of political representation in contemporary Mali—from the National Assembly to local councils and party meetings. This linguistic evidence was collected during fifteen months of fieldwork in Bamako and Kita, Mali, in 2010, 2011, and 2012.
      	Each chapter is centered on one of the various categories that mediate the relationship between political speech and action—such as authority, representation, and intention. My analyses of discursive patterns within the specific political context of Mali lays bare an oscillation between a serious engagement with democratic political discussion on the one hand, and its rejection through expressions of suspicion and disbelief on the other. Drawing on J. L. Austin’s speech act theory, I argue that democratic political speech suffers “infelicity,” or a recurrent difficulty in authenticating formal political speech and investing it with added performative force.
L’evoluzione della nube molecolare W49A
Creators: Laura Leonardi
Publisher: name: Media Inaf
Year: 2021

Una nuova immagine composita in banda radio e nell’infrarosso della nube molecolare W49A, rilevata con i radiotelescopi del Vla, mostra la presenza di una nursery stellare e di altri oggetti altamente energetici. Lo studio è stato guidato da un team dell’Agnes Scott College e pubblicato su The Astronomical Journal
On the noncommutative residue for pseudodifferential operators with log-polyhomogeneous symbols
Creators: name: Lesch, Matthias
Publisher: name: arXiv
Year: 1997
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58G15 (Primary), 58G11 (Secondary)

description: We study various aspects of the noncommutative residue for an algebra of pseudodifferential operators whose symbols have an expansion $a\sim \sum_{j=0}^\infty a_{m-j}, a_{m-j}(x,ξ)=\sum_{l=0}^k a_{m-j,l}(x,ξ) \log^l|ξ|,$ where $a_{m-j,l}$ is homogeneous in $ξ$ of degree $m-j$. We will explain why this algebra of pseudodifferential operators is natural. For a pseudodifferential operator in this class, $A$, and a classical elliptic pseudodifferential operator, $P$, we show that the generalized zeta-function $\Tr(AP^{-s})$ has a meromorphic continuation to the whole complex plane, however possibly with higher order poles. Our algebra of operators has a bigrading given by the order and the highest log-power occuring in the symbol expansion. We construct "higher" noncommutative residue functionals on the subspaces given by the log-grading. However, in contrast to the classical case we prove that the whole algebra does not admit any nontrivial traces. Finally we show that the analogue of the Kontsevich-Vishik trace also exists on our algebra. Our method also provides an alternative approach to the Kontsevich-Vishik trace.
description: LaTeX2e, 35 pages; v2 16 Sept 1997, section on Kontsevich-Vishik added, Final version, 10 July 1998, minor corrections, to appear in Ann. Glob. Anal. Geom
The Twisted Heisenberg Algebra ${\cal U}_{h,w}({\cal H}(4))$
Creators: name: Abdesselam, Boucif
Publisher: name: arXiv
Year: 1996
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: A two parametric deformation of the enveloping Heisenberg algebra ${\cal H}(4)$ which appear as a combination of the standard and a nonstandard quantization given by Ballesteros and Herranz is defined and proved to be Ribbon Hopf algebra. The universal ${\cal R}$-matrix and its associated quantum group are constructed. New solution of Braid group are obtained. The contribution of these parameters in invariants of links and WZW model are analyzed. General results for twisted Ribbon Hopf algebra are derived.
description: 21 pages, latex, no figures, Somes comments and references has been added, version to be published in Journal of Mathematical Physics
The Maxwell-Proca theory: definition and construction
Creators: name: Díez, Verónica Errasti
name: Gording, Brage
name: Méndez-Zavaleta, Julio A.
name: Schmidt-May, Angnis
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a systematic construction of the most general first order Lagrangian describing an arbitrary number of interacting Maxwell and Proca fields on Minkowski spacetime. To this aim, we first formalize the notion of a Proca field, in analogy to the well known Maxwell field. Our definition allows for a non-linear realization of the Proca mass, in the form of derivative self-interactions. Consequently, we consider so-called generalized Proca/vector Galileons. We explicitly demonstrate the ghost-freedom of this complete Maxwell-Proca theory by obtaining its constraint algebra. We find that, when multiple Proca fields are present, their interactions must fulfill non-trivial differential relations in order to ensure the propagation of the correct number of degrees of freedom. These relations had so far been overlooked, which means previous multi-Proca proposals generically contain ghosts. This is a companion paper to arXiv:1905.06968 [hep-th]. It puts on a solid footing the theory there introduced.
description: 9 pages + 8 pages appendix. v2: References added. v3: Footnote 3 deleted. v4: Journal version. This work is dedicated to Mar\'{i}a Jos\'{e} D\'{i}ez Segoviano
Cercava un pianeta, ha trovato un lampo gamma
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2021

Il Transiting Exoplanet Survey Satellite della Nasa, progettato per individuare mondi attorno a stelle diverse dal Sole, ha registrato l’intera evoluzione dell’afterglow ottico di un intenso lampo di raggi gamma, Grb 191016A. Il risultato dimostra come le capacità di Tess possano produrre risultati utili anche per l’astrofisica delle alte energie
Piccole galassie reionizzano
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2021

Uno studio condotto da un team di astrofisici dell'Università del Minnesota (Usa) mostra che la luce ad alta energia proveniente da piccole galassie potrebbe aver giocato un ruolo chiave nell'evoluzione dell’Universo. Ne parliamo con Claudia Scarlata, professoressa all’Università del Minnesota e coautrice dello studio
Maximal violation of Clauser-Horne-Shimony-Holt inequality for two qutrits
Creators: name: Fu, Li-Bin
name: Chen, Jing-Ling
name: Zhao, Xian-Geng
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Bell-Clauser-Horne-Shimony-Holt inequality (in terms of correlation functions) of two qutrits is studied in detail by employing tritter measurements. A uniform formula for the maximum value of this inequality for tritter measurements is obtained. Based on this formula, we show that non-maximally entangled states violate the Bell-CHSH inequality more strongly than the maximally entangled one. This result is consistent with what was obtained by Ac{í}n {\it et al} [Phys. Rev. A {\bf 65}, 052325 (2002)] using the Bell-Clauser-Horne inequality (in terms of probabilities).
description: 6 pages, 3 figures
mshw, a forecasting library to predict short-term electricity demand based on multiple seasonal Holt-Winters
Creators: name: Trull, Oscar
name: García-Díaz, J. Carlos
name: Peiró-Signes, Angel
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Econometrics (econ.EM)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: Transmission system operators have a growing need for more accurate forecasting of electricity demand. Current electricity systems largely require demand forecasting so that the electricity market establishes electricity prices as well as the programming of production units. The companies that are part of the electrical system use exclusive software to obtain predictions, based on the use of time series and prediction tools, whether statistical or artificial intelligence. However, the most common form of prediction is based on hybrid models that use both technologies. In any case, it is software with a complicated structure, with a large number of associated variables and that requires a high computational load to make predictions. The predictions they can offer are not much better than those that simple models can offer. In this paper we present a MATLAB toolbox created for the prediction of electrical demand. The toolbox implements multiple seasonal Holt-Winters exponential smoothing models and neural network models. The models used include the use of discrete interval mobile seasonalities (DIMS) to improve forecasting on special days. Additionally, the results of its application in various electrical systems in Europe are shown, where the results obtained can be seen. The use of this library opens a new avenue of research for the use of models with discrete and complex seasonalities in other fields of application.
description: 40 pages, 8 figures, 6 tables
Axion resonances in binary pulsar systems
Creators: name: Rozner, Mor
name: Grishin, Evgeni
name: Ginat, Yonadav Barry
name: Igoshev, Andrei P.
name: Desjacques, Vincent
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the extent to which resonances between an oscillating background of ultra-light axion and a binary Keplerian system can affect the motion of the latter. These resonances lead to perturbations in the instantaneous time-of-arrivals, and to secular variations in the period of the binary. While the secular changes at exact resonance have recently been explored, the instantaneous effects have been overlooked. In this paper, we examine the latter using N-body simulations including the external oscillatory forcing induced by the axion background. While the secular effects are restricted to a narrow width near the resonance, the instantaneous changes, albeit strongest close to resonances, are apparent for wide range of configurations. We compute the signal-to-noise ratio (SNR) as a function of semi-major axis for a detection of axion oscillations through the R\{o} mer delay. The latter can be extracted from the time-of-arrivals of binary pulsars. The SNR broadly increases with increasing binary eccentricity in agreement with the secular expectation. However, we find that it differs significantly from the scaling a^{5/2} around the lowest orders of resonance. Future observations could probe these effects away from resonances and, therefore, constrain a much broader range of axion masses provided that binary pulsar systems are found near the central region of our Galaxy, and that the time-or-arrival measurement accuracy reaches < 10 ns
description: Published in JCAP
The Distribution of Economic Resources to Children in Germany
Creators: name: Stockhausen, Maximilian
Publisher: name: Freie Universität Berlin
Year: 2017
Subjects: subject: In-kind Benefits
subject: Opportunity Costs
subject: Non-cash Incomes
subject: Extended Income
subject: Economic Inequality
subject: 300 Sozialwissenschaften::330 Wirtschaft
subject: 300 Sozialwissenschaften::330 Wirtschaft::336 Öffentliche Finanzen

description: This paper investigates the redistributive impact of private and public childcare provision and education on children's resources in Germany between 2009 and 2013. It takes account of the multidimensionality of children's needs and access to economic resources by applying an extended income approach. Combining survey data from the Socio-Economic Panel (SOEP) with administrative data from the German Federal Statistical Office, extended disposable income inequality is found to be significantly lower than disposable cash income inequality at the five percent level across all years. However, the extension does not significantly change distributional trends. At the same time, publicly provided childcare and schooling notably decrease inequality among children such that it cushions cash income inequality. One major reason for this effect is that public in-kind benefits profit children living with single parents, which are deprived in terms of cash incomes, most. This gives additional evidence on the importance of publicly provided childcare and schooling as a policy instrument to equalize economic resources and opportunities in children's lives.
Hidden Algebra of Three-Body Integrable Systems
Creators: name: Turbiner, Alexander
Publisher: name: arXiv
Year: 1998
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: It is shown that all 3-body quantal integrable systems that emerge in the Hamiltonian reduction method possess the same hidden algebraic structure. All of them are given by a second degree polynomial in generators of an infinite-dimensional Lie algebra of differential operators. It leads to new families of the orthogonal polynomials in two variables.
description: 11 pages, AMS-LaTeX, no figures, minor typos corrected, to appear in Mod.Phys.Lett.A
Parameter Efficient Finetuning for Speech Emotion Recognition and Domain Adaptation
Creators: name: Lashkarashvili, Nineli
name: Wu, Wen
name: Sun, Guangzhi
name: Woodland, Philip C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Foundation models have shown superior performance for speech emotion recognition (SER). However, given the limited data in emotion corpora, finetuning all parameters of large pre-trained models for SER can be both resource-intensive and susceptible to overfitting. This paper investigates parameter-efficient finetuning (PEFT) for SER. Various PEFT adaptors are systematically studied for both classification of discrete emotion categories and prediction of dimensional emotional attributes. The results demonstrate that the combination of PEFT methods surpasses full finetuning with a significant reduction in the number of trainable parameters. Furthermore, a two-stage adaptation strategy is proposed to adapt models trained on acted emotion data, which is more readily available, to make the model more adept at capturing natural emotional expressions. Both intra- and cross-corpus experiments validate the efficacy of the proposed approach in enhancing the performance on both the source and target domains.
The complete theory of Maxwell and Proca fields
Creators: name: Díez, Verónica Errasti
name: Gording, Brage
name: Méndez-Zavaleta, Julio A.
name: Schmidt-May, Angnis
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the most general ghost-free classical Lagrangian containing first-order derivatives and describing interacting real Abelian spin-one fields on Minkowski spacetime. We study both massive Proca and massless Maxwell fields and allow for a non-linear realization of mass, in the form of derivative self-interactions. Within this context, our construction notoriously extends the existing literature, which is limited to the case of a single Proca field and to multiple interacting Proca fields in the presence of a global rotational symmetry. In the limit of a single Proca field, we reproduce the known healthy interaction terms. We provide the necessary and sufficient conditions to ensure ghost-freedom in any multi-field setup. We observe that, in general, the said conditions are not satisfied by the rotationally symmetric multi-Proca interactions suggested so far, which implies that they propagate ghosts. Our theory admits a plethora of applications in a wide range of subjects. For illustrative purposes, we provide concrete proposals in holographic condensed matter and black hole physics.
description: 6 pages. v2: References added. v3: Single Proca limit modified. v4: Journal version. This work is dedicated to Mar\'{i}a Jos\'{e} D\'{i}ez Segoviano
Heteropachylus Roewer 1913
Creators: name: Mendes, Amanda Cruz
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Opiliones
Gonyleptidae
Heteropachylus

description: HETEROPACHYLUS ROEWER, 1913
 Heteropachylus Roewer, 1913a: 75, 1923: 421, 1929: 185; Mello-Leitão, 1923: 123, 1926: 342, 1932: 185, 1935: 100; Kästner, 1937: 389; Soares & Soares, 1954: 267, 1974: 611. H. Soares, 1968: 140; Muñoz-Cuevas, 1973: 226; Kury, 2003a: 142.
 Aesotrinoma Soares, 1977: 251; Kury, 1994: 350; 2003a: 142 (type species = Aesotrinoma crassicalcanei Soares, 1977, by original designation). syn. nov.
 Chavesincola Soares & Soares, 1946: 238, 1954: 243; Kury, 1994: 350, 2003a: 142. syn. nov.
 Distribution (Fig. 28): BRAZIL. Espírito Santo and Bahia. WWF Ecoregions: NT0103 and NT0104, respectively, Bahia coastal forests and Bahia interior forests.
 Type species: Heteropachylus spiniger Roewer, 1913, by monotypy.
 Diagnosis: Three or four mesotergal areas; mesotergal area III with variable armature. Median armature of free tergite II with length comparable to the length of the tergite (Figs 15A, 17A, 19A, 21A, 23A). Calcaneus I about half the size of the metatarsus and lighter than the astragalus. Femur IV (Figs 15, 18, 20, 22, 24) distinctly curved in dorsal view, with two curvatures (‘S-shaped’) in lateral view; bearing dorsobasal apophysis and row of tubercles on the prolateral margin, rounded at the distal half, larger at the medial portion of the row. Male genitalia (Fig. 25). Dorsal digitiform process in glans mostly absent (except in H. crassicalcanei).
description: Published as part of Mendes, Amanda Cruz, 2011, Phylogeny and taxonomic revision of Heteropachylinae (Opiliones: Laniatores: Gonyleptidae), pp. 437-483 in Zoological Journal of the Linnean Society 163 (2) on page 466, DOI: 10.1111/j.1096-3642.2011.00706.x, http://zenodo.org/record/5441392
Optical responses induced by spin gauge field at the second order
Creators: name: Karashtin, Evgeny
name: Tatara, Gen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Optical responses of ferromagnetic materials with spin gauge field that drives intrinsic spin curren is theoretically studied. The conductivity tensor is calculated based on a linear response theory to the applied electric field taking account of the non-linear effects of the spin gauge field to the second order. We consider the case where the spin gauge field is uniform, realized for spiral magnetization structure or uniform spin-orbit interaction. The spin gauge field, or an intrinsic spin current, turns out to give rise to anisotropic optical responses, which is expected to be useful to experimental detection of magnetization structures.
Schelling and twentieth-century Catholic theology: the case of Walter Kasper
Creators: name: Russo, Antonio
Publisher: name: figshare
Year: 2019
Subjects: subject: 220210 History of Philosophy
subject: FOS: Philosophy, ethics and religion
subject: 220315 Philosophy of Religion

description: The main purpose of the author is to provide an accurate analysis, new considerations and debates on the most important texts published by Card. Walter Kasper on Schelling and on the Tübingen School. The intention is to offer a new approach to Kasper’s opus. The paper comprises two parts: (1) a section about Walter Kasper and his interpretation of Schelling’s philosophy and (2) a shorter section dedicated to some of the most relevant theological developments of Kasper’s theology which he reached in pursuing Schelling’s questions.KEYWORDS: Walter Kasper, Schelling, contemporary theology, Karl Barth, German idealism
Absolute Continuity of the Floquet Spectrum for a Nonlinearly Forced Harmonic Oscillator
Creators: name: Graffi, Sandro
name: Yajima, Kenji
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We prove that the Floquet spectrum of a class of time-periodic Schroedinger equations under a a mildly nonlinear resonant forcing is purely absolutely continuous.
description: 8 pages