cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mining Energy-Related Practices in Robotics Software
Creators: name: Albonico, Michel
name: Malavolta, Ivano
name: Pinto, Gustavo
name: Guzman, Emitza
name: Chinnappan, Katerina
name: Lago, Patricia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Robots are becoming more and more commonplace in many industry settings. This successful adoption can be partly attributed to (1) their increasingly affordable cost and (2) the possibility of developing intelligent, software-driven robots. Unfortunately, robotics software consumes significant amounts of energy. Moreover, robots are often battery-driven, meaning that even a small energy improvement can help reduce its energy footprint and increase its autonomy and user experience. In this paper, we study the Robot Operating System (ROS) ecosystem, the de-facto standard for developing and prototyping robotics software. We analyze 527 energy-related data points (including commits, pull-requests, and issues on ROS-related repositories, ROS-related questions on StackOverflow, ROS Discourse, ROS Answers, and the official ROS Wiki). Our results include a quantification of the interest of roboticists on software energy efficiency, 10 recurrent causes, and 14 solutions of energy-related issues, and their implied trade-offs with respect to other quality attributes. Those contributions support roboticists and researchers towards having energy-efficient software in future robotics projects.
description: 11 pages
Quasars at z=6: the survival of the fittest
Creators: name: Volonteri, M.
name: Rees, M. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Sloan Digital Sky survey detected luminous quasars at very high redshift, z>6. Follow-up observations indicated that at least some of these quasars are powered by supermassive black holes (SMBHs) with masses in excess of billion solar masses. SMBHs, therefore, seem to have already existed when the Universe was less than 1 Gyr old, and the bulk of galaxy formation still has to take place. We investigate in this paper to which extent accretion and dynamical processes influence the early growth of SMBHs. We assess the impact of (i) black hole mergers, (ii) the influence of the merging efficiency and (iii) the negative contribution due to dynamical effects which can kick black holes out of their host halos (gravitational recoil). We find that if accretion is always limited by the Eddington rate via a thin disc, the maximum radiative efficiency allowed to reproduce the LF at z=6 is of order 12%, when the adverse effect of the gravitational recoil is taken into consideration. Dynamical effects cannot be neglected in studies of high-redshift SMBHs. If black holes can accrete at super-critical rate during an early phase, reproducing the observed SMBH mass values is not an issue, even in the case that the recoil velocity is in the upper limits range, as the mass ratios of merging binaries are skewed towards low values, where the gravitational recoil effect is very mild. We propose that SMBH growth at early times is very selective, and efficient only for black holes hosted in high density peak halos.
description: Accepted for publication in the ApJ. 9 pages, 6 b/w figures
Theory of inelastic scattering from quantum impurities
Creators: name: Borda, L.
name: Fritz, L.
name: Andrei, N.
name: Zarand, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use the framework set up recently to compute non-perturbatively inelastic scattering from quantum impurities [G. Zaránd {\it et al.}, Phys. Rev. Lett. {\bf 93}, 107204 (2004)] to study the the energy dependence of the single particle $S$-matrix and the inelastic scattering cross section for a number of quantum impurity models. We study the case of the spin $S=1/2$ two-channel Kondo model, the Anderson model, and the usual $S=1/2$ single-channel Kondo model. We discuss the difference between non-Fermi liquid and Fermi liquid models and study how a cross-over between the non-Fermi liquid and Fermi liquid regimes appears in case of channel anisotropy for the $S=1/2$ two-channel Kondo model. We show that for the most elementary non-Fermi liquid system, the two-channel Kondo model, half of the scattering remains inelastic even at the Fermi energy. Details of the derivation of the reduction formulas and a simple path integral approach to connect the $T$-matrix to local correlation functions are also presented.
description: published version
Additional file 3 of Is greater public transport use associated with higher levels of physical activity in a regional setting? Findings from a pilot study
Creators: name: Ragaini, Bruna S.
name: Sharman, Melanie J.
name: Lyth, Anna
name: Jose, Kim A.
name: Blizzard, Leigh
name: Peterson, Corey
name: Johnston, Fay H.
name: Palmer, Andrew
name: Williams, Julie
name: Marshall, Elaine A.
name: Morse, Megan
name: Cleland, Verity J.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 3: Table S3. Results of the confounder analysis examining the associations between sociodemographic variables and frequency of public and private transport use* and physical activity outcomes† (n=743).
Oxidative pressure leaching of chalcocite in sulphuric acid
Creators: name: Grewal, Ishwinder Singh
Publisher: name: University of British Columbia
Year: 2010

description: At INCO's Copper Cliff Copper Refinery, a copper sulphide residue containing precious metals is subjected to a pressure leach at 115°C. Copper occurs predominantly as Cu₂S and Cu₁.₉₆S. The leach produces a slurry of copper sulphate solution and basic copper sulphate and precious metals solids. The basic copper sulphate is dissolved in spent acid from the electrowinning tankhouse leaving a precious metals residue for further processing. The leach periodically develops a problem referred to as a "slow cook" where leaching times are greatly extended and/or incomplete leaching of copper is encountered. Based on earlier work, chalcocite leaching was proposed to occur sequentially via the following reactions: [formula omitted]. The exact reaction path is determined by the initial solution conditions (copper sulphate and sulphuric acid concentrations). Under normal batch makeup conditions, all of the Cu₂S is oxidized to cupric ions and sulphate via reactions 1,2 and 4. If the solution becomes depleted in copper and acid, reaction 3 could occur. Elemental sulphur can be produced via reaction 5. Experimental studies showed that the reactions were nearly sequential. Reactions 1 and 2 were found to be very fast relative to the rate of reaction 4. No slow cook conditions were observed in the laboratory under normal leaching conditions. There is evidence suggesting that the slow cooks are caused by oxygen mass transfer limitations under conditions where the slurry becomes highly viscous and pseudoplastic due to formation of finely divided basic copper sulphate.
Absence of superconductivity in the two-dimensional Hubbard model
Creators: name: Sherman, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The possibility of the superconducting transition in the two-dimensional repulsive Hubbard model is studied using the ladder approximation of the strong coupling diagram technique. The $t$-$U$ and $t$-$t'$-$t''$-$U$ models are considered in the regime of strong correlations, for the on-site Coulomb repulsion $U=8t$, in the range of temperatures $0.02t\lesssim T\lesssim 0.3t$. To avoid the influence of the phase separation and size effects the calculations are performed in an infinite crystal, in the part of the phase diagram without inhomogeneities, for the electron concentration $\bar{n} =0.92$. Solutions of the Eliashberg equation for singlet and triplet pairing, which are transformed according to one-dimensional representations of the lattice point group $D_4$, are considered. For both models and all considered symmetries, eigenvalues of the Eliashberg equation are less than unity and demonstrate no upward trend with decreasing temperature. This result points to the absence of superconductivity in the Hubbard model in the strong-coupling regime. We discuss the reason for the small eigenvalue of the Eliashberg equation in the case of the singlet $d_{x^2-y^2}$ pairing.
description: 9 pages, 6 figures
Quantum Reservoir Computing for chaotic time series and extreme events forecasting
Creators: name: Ahmed, Osama
name: Tennie, Felix
name: Magri, Luca
Publisher: name: Zenodo
Year: 2023

description: Recently, it has been demonstrated that quantum reservoir computing (QRC) is an effective tool for time-series prediction. In this work, QRC is applied for multivariate, non-linear and chaotic time series predictions using the IBM Quantum platform. We compare the results of QRC predictions with its classical counterpart, analysing reservoir dynamics and sizes. Specifically, this comprises time-series prediction, reservoir memory capacity and long-term statistics of the chaotic systems. The analysed chaotic systems are, 3-dimensional Lorenz-63, 10 and 20 dimensional Lorenz-96, and 9-dimensional chaotic shear flow model for extreme events. We show that in comparison to the classical reservoir, fewer hyper-parameters are needed by the quantum reservoir, highlighting the robustness of the method. Furthermore, we have compared ensembles of networks between the quantum and classical schemes, with optimal hyper-parameters chosen through grid search and Bayesian optimization. We find that entanglement in the quantum reservoir enriches reservoir dynamics and prediction capabilities. More specifically, one can reduce the size of the quantum reservoir by comparison to its classical counterpart while preserving accuracy of the output. Finally, we analyse the challenges and opportunities of QRC for recurrent time series predictions on Noisy Intermediate Scale Quantum computing (NISQ)-era quantum processors. This work confirms and highlights the potential of QRC for chaotic time series predictions on near term quantum computers.
Review of Bennet Zon. 2007. Representing Non-Western Music in Nineteenth-Century Britain. Rochester, NY: University of Rochester Press
Creators: name: Revuluri, Sindhumathi
Publisher: name: Current Musicology
Year: 2009

description: Bennet Zon’s Representing Non-Western Music in Nineteenth-Century Britain surveys British Primary sources from the “long” nineteenth century that describe, theorize, and react to various types of music from around the world. Zon shows how discourse around non-Western music in this time and place was shaped by and indebted to the broad intellectual trends in anthropology and psychology, as well as musicology and travel literature. Zon states that this study is mean to rectify the lacuna around how composers or the general populace may have perceived non-Western musics, not simply the way they were imagined in classical compositions. A parallel aim of this study appears explicitly in the epilogue, and deals with establishing a history of British ethnomusicology and redeeming previously overlooked innovators as particular agents in that history.
description: Current Musicology, No 87 (2009): Current Musicology
An expert system to diagnose quality problems in the continuous casting of steel billets
Creators: name: Kumar, Sunil
Publisher: name: University of British Columbia
Year: 2008

description: Quality problems, such as cracks, rhomboidity and breakouts are often observed in continuously cast steel billets. Although information is available in the literature on the causes of, and solutions to, these problems, the transfer of this knowledge to operating personnel is not always an easy task. To address this issue, an expert system has been developed. The important features of knowledge engineering an expert system to diagnose quality problems in the continuous casting of steel billets are described in this thesis. The process used to extract knowledge from the Experts, the experiments employed to represent knowledge indifferent ways, the strategies adopted to accumulate evidence and the methodologies to present coherent recommendations to both experienced and inexperienced operating personnel are discussed. Expertise was derived from diverse sources. On the one hand fundamental knowledge about heat transfer, solidification and mechanical behaviour of steel was applied to identify the origin of a quality problem in the process; on the other, heuristic knowledge associated with billet characteristics, machine design and operating factors was required to focus on the problem causes. Integration of these two different types of knowledge was essential in developing a useful system. From the Experts' viewpoint, this exercise provided them with a formal representation of their knowledge to solve quality problems and identified new areas for future research. Moreover, the Experts actually generated new ideas about the domain which previously were unrecognized. For the users, this system serves two important functions - as a diagnostic tool for analyzing quality problems and as a teaching tool for new operating personnel.
Automatic analysis of artistic paintings using information-based measures
Creators: name: Silva, Jorge Miguel
name: Pratas, Diogo
name: Antunes, Rui
name: Matos, Sérgio
name: Pinho, Armando J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The artistic community is increasingly relying on automatic computational analysis for authentication and classification of artistic paintings. In this paper, we identify hidden patterns and relationships present in artistic paintings by analysing their complexity, a measure that quantifies the sum of characteristics of an object. Specifically, we apply Normalized Compression (NC) and the Block Decomposition Method (BDM) to a dataset of 4,266 paintings from 91 authors and examine the potential of these information-based measures as descriptors of artistic paintings. Both measures consistently described the equivalent types of paintings, authors, and artistic movements. Moreover, combining the NC with a measure of the roughness of the paintings creates an efficient stylistic descriptor. Furthermore, by quantifying the local information of each painting, we define a fingerprint that describes critical information regarding the artists' style, their artistic influences, and shared techniques. More fundamentally, this information describes how each author typically composes and distributes the elements across the canvas and, therefore, how their work is perceived. Finally, we demonstrate that regional complexity and two-point height difference correlation function are useful auxiliary features that improve current methodologies in style and author classification of artistic paintings. The whole study is supported by an extensive website (http://panther.web.ua.pt) for fast author characterization and authentication.
description: Website: http://panther.web.ua.pt 24 Pages; 19 pages article; 5 pages supplementary material
Additional file 1 of Heterogeneous effects of hospital competition on inpatient expenses: an empirical analysis of diseases grouping basing on conditions’ complexity and urgency
Creators: name: Lu, Liyong
name: Lin, Xiaojun
name: Pan, Jay
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1.
Homology of GL_n over algebraically closed fields
Creators: name: Mirzaii, Behrooz
Publisher: name: arXiv
Year: 2007
Subjects: subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 19D55;19D45

description: In this paper we define higher pre-Bloch groups p_n(F) of a field F. When our base field is algebraically closed we study its connection to the homology of the general linear groups with finite coefficient Z/l where l is a positive integer. As a result of our investigation we give a necessary and sufficient condition for the map H_n(GL_{n-1}(F), Z/l) --> H_n(GL_{n}(F), Z/l)$ to be bijective. We prove that this map is bijective for n < 5. We also demonstrate that the divisibility of p_n(C) is equivalent to the validity of the Friedlander-Milnor Isomorphism Conjecture for (n+1)-th homology of GL_n(C).
description: 19 pages, Latex
Degenerate Religion and Masculinity in Parsifal Reception
Creators: name: Kennaway, James
Publisher: name: Current Musicology
Year: 2009

description: The idea that there is something religious about Bayreuth is not new, and goes well beyond cliches about opera houses as the "cathedrals of the bourgeoisie." The words used to describe the festival by Wagnerians and anti-Wagnerians alike have often been consciously religious. One makes a pilgrimage to the holy site, there are acolytes who serve the holy work and the orthodoxy, heretics are excommunicated-the comparisons are all too obvious. Friedrich Nietzsche referred to this phenomenon in a letter to his friend Malwida von Meysenburg when he suggested that "all this Wagnerizing" was "an unconscious emulation of Rome" (Fischer-Dieskau 1974:202). Even in more recent times, after the moral, ideological, and organizational disasters that the festival was caught up in during the twentieth century, the skies above the Festspielhaus were scoured for signs of the white smoke announcing which member of the dysfunctional clan was to succeed the composer's grandson Wolfgang Wagner.
description: Current Musicology, No 88 (2009): Current Musicology
The two-sphere partition function in two-dimensional quantum gravity at fixed area
Creators: name: Mühlmann, Beatrix
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss two-dimensional quantum gravity coupled to conformal matter and fixed area in a semiclassical large and negative matter central charge limit. In this setup the gravity theory -- otherwise highly fluctuating -- admits a round two-sphere saddle. We discuss the two-sphere partition function up to two-loop order from the path integral perspective. This amounts to studying Feynman diagrams incorporating the fixed area constraint on the round two-sphere. In particular we find that all ultraviolet divergences cancel to this order. We compare our results with the two-sphere partition function obtained from the DOZZ formula.
description: 16 pages + appendices. arXiv admin note: text overlap with arXiv:2106.01665
Measuring and upscaling micromechanical interactions in a cohesive granular material
Creators: name: Hemmerle, Arnaud
name: Yamaguchi, Yuta
name: Makowski, Marcin
name: Bäumchen, Oliver
name: Goehring, Lucas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The mechanical properties of a disordered heterogeneous medium depend, in general, on a complex interplay between multiple length scales. Connecting local interactions to macroscopic observables, such as stiffness or fracture, is thus challenging in this type of material. Here, we study the properties of a cohesive granular material composed of glass beads held together by soft polymer bridges. We characterise the mechanical response of single bridges under traction and shear, using a setup based on the deflection of flexible micropipettes. These measurements, along with information from X-ray microtomograms of the granular packings, then inform large-scale discrete element model (DEM) simulations. Although simple, these simulations are constrained in every way by empirical measurement and accurately predict mechanical responses of the aggregates, including details on their compressive failure, and how the material's stiffness depends on the stiffness and geometry of its parts. By demonstrating how to accurately relate microscopic information to macroscopic properties, these results provide new perspectives for predicting the behaviour of complex disordered materials, such as porous rock, snow, or foam.
description: 9 pages, 5 figures
The two-boundary Temperley-Lieb algebra
Creators: name: de Gier, Jan
name: Nichols, Alexander
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study a two-boundary extension of the Temperley-Lieb algebra which has recently arisen in statistical mechanics. This algebra lies in a quotient of the affine Hecke algebra of type C and has a natural diagrammatic representation. The algebra has three parameters and, for generic values of these, we determine its representation theory. We use the action of the centre of the affine Hecke algebra to show that all irreducible representations lie within a finite dimensional diagrammatic quotient. These representations are fully characterised by an additional parameter related to the action of the centre. For generic values of this parameter there is a unique representation of dimension 2^N and we show that it is isomorphic to a tensor space representation. We construct a basis in which the Gram matrix is diagonal and use this to discuss the irreducibility of this representation.
description: 45 pages Latex, 21 eps figures, revised version
Additional file 1 of Latent profile analysis of cognitive decline and depressive symptoms after intracerebral hemorrhage
Creators: name: Keins, Sophia
name: Abramson, Jessica R.
name: Castello, Juan Pablo
name: Pasi, Marco
name: Charidimou, Andreas
name: Kourkoulis, Christina
name: DiPucchio, Zora
name: Schwab, Kristin
name: Anderson, Christopher D.
name: Gurol, M. Edip
name: Greenberg, Steven M.
name: Rosand, Jonathan
name: Viswanathan, Anand
name: Biffi, Alessandro
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology

description: Additional file 1: Supplemental Methods. Supplementary Table I. Multivariable Analyses of Predictors for Cognitive Decline and Depression Onset Profiles after ICH.
Multiscale continuum-velocity kinetic model for vehicular traffic with local and mean field interactions
Creators: name: Calvo, J.
name: Nieto, J.
name: Zagour, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper deals with the modeling and mathematical analysis of vehicular traffic phenomena according to a kinetic theory approach, where the microscopic state of vehicles is described by: (i) position, (ii) velocity, as a continuous variable, and also (iii) activity, namely a variable suited to model the quality of the driver-vehicle micro-system. Interactions at the microscopic scale are modeled by methods of game theory with continuous velocity variable, thus leading to the derivation of mathematical models within the framework of the kinetic theory of active particles. Short-range interactions and mean field interactions are modeled to depict velocity changes related to passing and clustering phenomena. Finally, we perform an analysis of a constructive method to solve the model.
description: 19 pages, 2 figures
Review of Roger Freitas. 2009. Portrait of a Castrato: Politics, Patronage, and Music in the Life of Atto Melani. New Perspectives in Music History and Criticism. Cambridge and New York: Cambridge University Press
Creators: name: Wilbourne, Emily
Publisher: name: Current Musicology
Year: 2009

description: Roger Freitas firmly situates his book, Portrait of a Castrato: Politics, Patronage, and Music in the Life of Atto Melani, as biography, yet the text aspires to something more: both the blurb and the introduction promise to clarify ‘what music at this time actually was.’ More properly, Freitas offers an articulate analysis of the social valence of musical performance within the elite circles of the seventeenth-century Italian courts; he focuses on music as a skill with material benefits. The subject of Freitas’s book, Atto Melani (1626-1714), was a castrato, trained as a singer, although eventually he moved away from performance, spending the latter years of his life as a diplomat. According to Freitas, Atto – referred to by his first name, as per contemporary convention – was the ‘most highly documented’ musician of the seventeenth century. With few exceptions, the documents that survive are letters written by Atto, and addressed to a cross-section of the most important political figures in Italy. In his relationship to courtly culture and as a court musician, Atto participated in an increasingly anachronistic model of ‘musical performance,’ one which persisted in contrast with newer, recognizably modern patterns of professionalization associated with the public operatic stage. This is, perhaps, one of the most valuable aspects of this study: Freitas has ably and coherently mapped out the way in which the intricate and asymmetrical obligations of patron and client functioned in seventeenth-century Italy, situating Atto’s musical skills within a broad range of courtly services and deftly portraying the castrato’s gradual shift from court musician to courtier.
description: Current Musicology, No 88 (2009): Current Musicology
Simple parameterization of nuclear attenuation data
Creators: name: Akopov, N.
name: Grigoryan, L.
name: Akopov, Z.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Based on the nuclear attenuation data obtained by the HERMES experiment on nitrogen and krypton nuclei, it is shown that the nuclear attenuation $R_M^{h}$ can be parametrised in a form of a linear polynomial $P_1=a_{11}$ + $τa_{12}$, where $τ$ is the formation time, which depends on the energy of the virtual photon $ν$ and fraction of that energy $z$ carried by the final hadron. Three widely known parameterizations for $τ$ were used for the performed fit. The fit parameters $a_{11}$ and $a_{12}$ do not depend on $ν$ and $z$.
Physics and Mathematics of Calogero particles
Creators: name: Polychronakos, Alexios P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We give a review of the mathematical and physical properties of the celebrated family of Calogero-like models and related spin chains.
description: Version to appear in Special Issue of Journal of Physics A: Mathematical and General
The effect of R-ratio on the mode II fatigue delamination growth of unidirectional carbon/epoxy composites
Creators: name: Gambone, Livio R.
Publisher: name: University of British Columbia
Year: 2010

description: An investigation of the effect of R-ratio on the mode II fatigue delamination of AS4/3501-6 carbon/epoxy composites has been undertaken. Experiments have been performed on end notched cantilever beam specimens over a wide range of R-ratios (-l ≤R ≤0.50). The measured delamination growth rate data have been correlated with the mode II values of strain energy release rate range ∆G[formula omitted]), maximum strain energy release rate (G[formula omitted]) and stress intensity factor range (∆K[formula omitted]). The growth rate is dependent on the R-ratio over the range tested. For a constant level of ∆G[formula omitted], the crack growth rate decreases with increasing R-ratio. A similar trend is observed when the data is plotted as a function of G[formula omitted]. The effect of plotting the growth rate as a function of ∆K[formula omitted] is to produce an R-ratio dependence opposite to that obtained by either the ∆G[formula omitted] or G[formula omitted] approach. For a constant level of ∆K[formula omitted], the crack growth rate increases with increasing R-ratio. Master equations which completely characterize the fatigue behaviour as a function of ∆G[formula omitted] and ∆K[formula omitted] have been derived, based on the observation that the growth rate law exponent, n and constant, A are unique functions of R-ratio. Values for n are surprisingly large and increase with increasing R-ratio whereas values for A decrease with increasing R-ratio. The effect of time-at-load has been considered in an attempt to explain the existence of the R-ratio dependence of the growth rate. The correct trend can be established for the exponent, n but not for the constant, A. Friction between the crack faces, particularly at higher R-ratios, is proposed as a possible explanation for the observed anomaly. Further evidence of a frictional mechanism operating at higher R-ratios has been discovered through a postmortem fracture surface examination. Additional fractographic observations are presented over the entire range of R-ratios tested. In regions subjected to negative R-ratio cycling, there is no evidence of the characteristic mode II hackle features. Instead, loose rounded particles of matrix material are found. An extensive amount of hackling is observed in regions subjected to low positive R-ratio cycles. The extent of hackle damage visibly decreases in areas where higher levels of R-ratio are imposed. A correlation between the general fracture surface morphology and the fatigue data provides support for the hypothesis that energy for delamination is always available in sufficient quantity, and that growth is dependent on the stresses ahead of the crack tip being sufficiently high.
Two-dimensional topological semimetals
Creators: name: Feng, Xiaolong
name: Zhu, Jiaojiao
name: Wu, Weikang
name: Yang, Shengyuan A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The field of two-dimensional topological semimetals, which emerged at the intersection of two-dimensional materials and topological materials, have been rapidly developing in recent years. In this article, we briefly review the progress in this field. Our focus is on the basic concepts and notions, in order to convey a coherent overview of the field. Some material examples are discussed to illustrate the concepts. We discuss the outstanding problems in the field that need to be addressed in future research.
description: 14 pages, 23 figures
Additional file 1 of Community-level educational attainment and dementia: a 6-year longitudinal multilevel study in Japan
Creators: name: Takasugi, Tomo
name: Tsuji, Taishi
name: Hanazato, Masamichi
name: Miyaguni, Yasuhiro
name: Ojima, Toshiyuki
name: Kondo, Katsunori
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 1: Supplementary Table S1. Criteria of Levels of Cognitive Disability in Japanese Long-Term Care Insurance System. The Ministry of Health, Labor and Welfare in Japan classified eight ranks on a dementia scale according to people’s cognitive disability.
Dephasing in the semiclassical limit is system-dependent
Creators: name: Petitjean, Cyril
name: Jacquod, Philippe
name: Whitney, Robert S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate dephasing in open quantum chaotic systems in the limit of large system size to Fermi wavelength ratio, $L/λ_F >> 1$. We semiclassically calculate the weak localization correction $g^{wl}$ to the conductance for a quantum dot coupled to (i) an external closed dot and (ii) a dephasing voltage probe. In addition to the universal algebraic suppression $g^{wl} \propto (1+τ_D/τ_ϕ)^{-1}$ with the dwell time $τ_D$ through the cavity and the dephasing rate $τ_ϕ^{-1}$, we find an exponential suppression of weak localization by a factor $\propto \exp[-\tildeτ/τ_ϕ]$, with a system-dependent $\tildeτ$. In the dephasing probe model, $\tildeτ$ coincides with the Ehrenfest time, $\tildeτ \propto \ln [L/λ_F]$, for both perfectly and partially transparent dot-lead couplings. In contrast, when dephasing occurs due to the coupling to an external dot, $\tildeτ \propto \ln [L/ξ]$ depends on the correlation length $ξ$ of the coupling potential instead of $λ_F$.
description: 4 pages 3 figures (v2 contains numerous cosmetic changes)
Giuseppe Gerbino. 2009. Music and the Myth of Arcadia in Renaissance Italy. New Perspectives in Music History and Criticism. Cambridge and New York: Cambridge University Press.
Creators: name: Bryant, Brooke
Publisher: name: Current Musicology
Year: 2009

description: In Music and the Myth of Arcadia in Renaissance Italy, Giuseppe Gerbino situates the pastoral as a vital and influential genre in the cultural fabric of sixteenth-century Italy, countering a scholarly tradition that has tradition-ally minimized its importance. This book offers the first comprehensive investigation of pastoral music in sixteenth-century Italy, reclaiming it as a complex subject worthy of in-depth exploration. It is the most recent work in Cambridge University Press's New Perspectives in Music History and Criticism series, edited by Jeffrey Kallberg, Anthony Newcome, and Ruth Solie. Works in this series approach music and its history from innovative points of view, often challenging dominant narratives and discourses.
description: Current Musicology, No 88 (2009): Current Musicology
Quantum transport properties of beta-Bi4I4 near and well beyond the extreme quantum limit
Creators: name: Wang, Peipei
name: Tang, Fangdong
name: Wang, Peng
name: Zhu, Haipeng
name: Cho, Chang-Woo
name: Wang, Junfeng
name: Du, Xu
name: Shao, Yonghong
name: Zhang, Liyuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have investigated the magneto-transport properties of beta-Bi4I4 bulk crystal, which was recently theoretically proposed and experimentally demonstrated to be a topological insulator. At low temperature T and magnetic field B, a series of Shubnikov-De Haas(SdH) oscillations are observed on the magnetoresistivity (MR). The detailed analysis reveals a light cyclotron mass of 0.1 me, and the field angle dependence of MR reveals that the SdH oscillations originate from a convex Fermi surface. In the extreme quantum limit (EQL) region, there is a metal-insulator transition occurring soon after the EQL. We perform the scaling analysis, and all the isotherms fall onto a universal scaling with a fitted critical exponent of 6.5. The enormous value of critical exponent implies this insulating quantum phase originated from strong electron-electron interactions in high fields. However, in the far end of EQL, both the longitudinal and Hall resistivity increase exponentially with B, and the temperature dependence of the MR reveals an energy gap induced by the high magnetic field, signifying a magnetic freeze-out effect. Our findings indicate that bulk beta-Bi4I4 is an excellent candidate for a 3D topological system for exploring EQL physics and relevant exotic quantum phases.
description: 14 pages, 5 figures
Inelastic scattering from quantum impurities
Creators: name: Zarand, G.
name: Borda, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We review the non-perturbative theoretical framework set up recently to compute the inelastic scattering cross section from quantum impurities [G. Zaránd {\it et al.}, Phys. Rev. Lett. {\bf 93}, 107204 (2004)] and show how it can be applied to a number of quantum impurity models. We first use this method for the $S=1/2$ single-channel Kondo model and the Anderson model. In both cases, a large plateau is found in the inelastic scattering rate for incoming energies above $T_K$, and a quasi-linear regime appears in the energy range $0.05 T_K < ω< 0.5 T_K$, in agreement with the experimental observations. We also present results for the 2-channel Kondo model, the prototype of all non-Fermi liquid models, and show that there half of the scattering remains inelastic even at the Fermi energy.
description: Review submitted to the proceedings of the conference DECONS 2006
Improved determination of strange distribution function from the global analysis using BHPS model
Creators: name: Salajegheh, Maral
name: Nejad, S. Mohammad Moosavi
name: Tehrani, S. Atashbar
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the impact of intrinsic strange (IS) component of nucleon sea on the global analysis of parton distribution functions (PDFs) considering a wide range of experimental data. To this aim, we consider two scenarios on the basis of BHPS model results for the IS distribution. In the first scenario, we apply the results presented through the BHPS model and in the second scenario we use its evolved distributions. For each scenarios, we present the limit of the IS probability $ {\cal P}_5^{s\bar{s}} $ for the standard tolerance criteria $ Δχ^2=1 $ and $ 18.112 $ at $ 1σ$ and $ 4σ$ levels. Our results show that the experimental data can tolerate an IS component with a greater probability $ {\cal P}_5^{s\bar{s}} $ if one employs the second scenario. We obtain $ {\cal P}_5^{s\bar{s}}\approx 0.01 $ and $ {\cal P}_5^{s\bar{s}}\approx 0.025 $ for $ Δχ^2=1 $ and $18.112$, respectively, at the $ 4σ$ level. We also calculate the ratio of strange-to-light sea-quark densities $r_s$ in the proton both including and excluding the IS component. Our results show that one can obtain a higher value for the ratio $r_s$ if the IS component is included.
description: 12 pages, 5 figs , 2 tables
The Universal Amplitude Ratio $Γ^{-}/Γ^{+}$ for Two-Dimensional Percolation
Creators: name: Jensen, Iwan
name: Ziff, Robert M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The amplitude ratio of the susceptibility (or second size-moment) for two-dimensional percolation is calculated by two series methods and also by Monte-Carlo simulation. The first series method is a new approach based upon integrating approximations to the scaling function. The second series method directly uses low- and high-density series expansions of the susceptibility, going to unprecedented orders for both bond and site percolation on the square lattice. Putting all methods together we find a consistent value $Γ^{-}/Γ^{+} = 162.5 \pm 2$, a significant improvement over previous results that placed the value of this ratio variously in the range of 14 to 220.
description: 4 pages, 3 figures
Additional file 5 of Fall prevention in community-dwelling adults with mild to moderate cognitive impairment: a systematic review and meta-analysis
Creators: name: Racey, M.
name: Markle-Reid, M.
name: Fitzpatrick-Lewis, D.
name: Ali, M. U.
name: Gagne, H.
name: Hunter, S.
name: Ploeg, J.
name: Sztramko, R.
name: Harrison, L.
name: Lewis, R.
name: Jovkovic, M.
name: Sherifali, D.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 5.
Additional file 6 of Fall prevention in community-dwelling adults with mild to moderate cognitive impairment: a systematic review and meta-analysis
Creators: name: Racey, M.
name: Markle-Reid, M.
name: Fitzpatrick-Lewis, D.
name: Ali, M. U.
name: Gagne, H.
name: Hunter, S.
name: Ploeg, J.
name: Sztramko, R.
name: Harrison, L.
name: Lewis, R.
name: Jovkovic, M.
name: Sherifali, D.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 6.
Additional file 4 of Fall prevention in community-dwelling adults with mild to moderate cognitive impairment: a systematic review and meta-analysis
Creators: name: Racey, M.
name: Markle-Reid, M.
name: Fitzpatrick-Lewis, D.
name: Ali, M. U.
name: Gagne, H.
name: Hunter, S.
name: Ploeg, J.
name: Sztramko, R.
name: Harrison, L.
name: Lewis, R.
name: Jovkovic, M.
name: Sherifali, D.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 4.
Approximation of quantum Levy processes by quantum random walks
Creators: name: Franz, Uwe
name: Skalski, Adam
Publisher: name: arXiv
Year: 2007
Subjects: subject: Functional Analysis (math.FA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary 46L53, Secondary 81S25, 60J10

description: Every quantum Levy process with a bounded stochastic generator is shown to arise as a strong limit of a family of suitably scaled quantum random walks.
description: 7 pages
The Effects of Website Quality on Customer Satisfaction in Mahasarakham Province: A Case Study of WWW.TARAD.COM
Creators: name: Chanla Touch
name: Suteera Puangpronpitag
name: Achariya Issarapaibool
Publisher: name: National Research Council of Thailand
Year: 2015
Subjects: E-commerce,Website Quality,Information Quality,System Quality,Service Quality,Customer Satisfaction

description: 3 (March), 1, Social Science Asia
Additional file 6 of Genomic adaptations of Campylobacter jejuni to long-term human colonization
Creators: name: Bloomfield, Samuel J.
name: Midwinter, Anne C.
name: Biggs, Patrick J.
name: French, Nigel P.
name: Marshall, Jonathan C.
name: Hayman, David T. S.
name: Carter, Philip E.
name: Mather, Alison E.
name: Fayaz, Ahmed
name: Thornley, Craig
name: Kelly, David J.
name: Benschop, Jackie
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6. New Zealand patient gene number modeling.
Exploring the Lived Experiences of High-Performance Micro Entrepreneurs in Malaysia: A Hermeneutic Approach
Creators: name: Hassan, I.S.
name: Salleh, A.
name: Md Saad,N., Krauss,S.E.
name: Mohammed, M.O
Publisher: name: National Research Council of Thailand
Year: 2015
Subjects: Entrepreneurship,microfinance,lived experiences,hermeneutic,micro entrepreneurs

description: 3 (March), 1, Social Science Asia
Trapped Ion Quantum Computing using Optical Tweezers and Electric Fields
Creators: name: Mazzanti, M.
name: Schüssler, R. X.
name: Espinoza, J. D. Arias
name: Wu, Z.
name: Gerritsma, R.
name: Safavi-Naini, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We propose a new scalable architecture for trapped ion quantum computing that combines optical tweezers delivering qubit state-dependent local potentials with oscillating electric fields. Since the electric field allows for long-range qubit-qubit interactions mediated by the center-of-mass motion of the ion crystal alone, it is inherently scalable to large ion crystals. Furthermore, our proposed scheme does not rely on either ground state cooling or the Lamb-Dicke approximation. We study the effects of imperfect cooling of the ion crystal, as well as the role of unwanted qubit-motion entanglement, and discuss the prospects of implementing the state-dependent tweezers in the laboratory.
description: 5 pages, 3 figures
The kinetics of zinc extraction in the di(2-ethylhexyl) phosphoric acid, n-heptane-zinc perchlorate, perchloric acid, water system
Creators: name: MacLean, Donald William John
Publisher: name: University of British Columbia
Year: 2010

description: The kinetics of zinc extraction from perchlorate solutions with di(2-ethylhexyl) phosphoric acid in n-heptane have been measured using the rotating diffusion cell technique. The extraction of zinc is controlled by the mass transfer of reactants (Zn²⁺ and D2EHPA) to the interface. At low zinc concentrations, the system is controlled by the aqueous transport of Zn²⁺ to the interface; at higher zinc concentrations transport of D2EHPA becomes rate controlling. For the range of D2EHPA concentrations examined, the transport of D2EHPA is rate controlling. Bulk pH has a negligible effect, except perhaps at the lowest pH values examined, where there may be a slight decrease in extraction rate. This decrease was attributed to less favourable thermodynamics at low interfacial pH values. It appears that the chemical reaction rate is fast enough that it has a negligible effect on the overall extraction rate. A basic mathematical model was developed which is adequate for predicting the extraction rate under variable conditions of zinc concentration, D2EHPA concentration, and pH. The effect of using a partially loaded organic extractant was also investigated, and the system was found to be mass transfer controlled. An extended mathematical model was developed which predicts that the speciation of organic complexed zinc changes with increasing preload, and at high loadings the direction of ZnL₂HL and ZnL₂(HL)₂ flux reverses, with these species providing extractant to the interface. At very high loadings, ZnL₂HL provides almost all the extractant to the interface. Experimental studies of the effect of temperature on the rate of zinc extraction resulted in a calculation of the activation energy which was consistent with a diffusion controlled mechanism. Finally, the effect of different filter pore sizes on extraction was examined. The extraction rate decreases significantly with a very small filter pore size, while there appeared to be little or no effect for larger filter pore sizes. For the filter pore size used in this study, it was therefore concluded that the filter pores do not pose an additional resistance to mass transfer.
Risk attitudes and game playing experience: The game of hedge accounting tools for foreign currency exchange
Creators: name: Kraiwut Tangsattayacheepa
name: Uthai Tanlamai
Publisher: name: National Research Council of Thailand
Year: 2015
Subjects: Risk Attitudes,Hedge Accounting of Foreign Currency Exchange,Hedge Accounting Tools,Game-play Experience,Information Visualization

description: 3 (March), 1, Social Science Asia
The influencing factors of customer retention in airline industry: a case of drukair royal Bhutan airlines
Creators: name: Melam Zangmo
name: Wasin Liampreecha
name: Sujinda Chemsripong
Publisher: name: National Research Council of Thailand
Year: 2015
Subjects: Service quality,Customer,satisfaction,Customer loyalty,Airline,Drukair, Bhutan

description: 3 (March), 1, Social Science Asia
Additional file 7 of Genomic adaptations of Campylobacter jejuni to long-term human colonization
Creators: name: Bloomfield, Samuel J.
name: Midwinter, Anne C.
name: Biggs, Patrick J.
name: French, Nigel P.
name: Marshall, Jonathan C.
name: Hayman, David T. S.
name: Carter, Philip E.
name: Mather, Alison E.
name: Fayaz, Ahmed
name: Thornley, Craig
name: Kelly, David J.
name: Benschop, Jackie
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7. United Kingdom patient phylogenetic analysis.