cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Global and Local D-vortices
Creators: name: Kim, Yoonbai
name: Kyae, Bumseok
name: Lee, Jungjai
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Codimension-two objects on a system of brane-antibrane are studied in the context of Born-Infeld type effective field theory with a complex tachyon and U(1)$\times$U(1) gauge fields. When the radial electric field is turned on in D2${\bar {\rm D}}$2, we find static regular global and local D-vortex solutions which could be candidates of straight cosmic D-strings in a superstring theory. A natural extension to DF-strings is briefly discussed.
description: 24 pages, 10 eps figures
title: Access to Higher Education : What counts as fairness in both an individual and systemic perspective? (LIEPP Working Paper, n°04 bis)
Creators: name: Duru-bellat, Marie
name: Gajdos, Thibault
Publisher: name: Sciences Po - LIEPP
Year: 2012
Subjects: subject: FOS: Social sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Fairness issues are quite widespread in educational research. However, despite the large number of empirical studies on this topic, few question the precise way in which equality is defined and assessed. That is especially true with regards to access to higher education. In most empirical studies, it seems straightforward to consider fair any situation in which the rates of access to both higher education in general as well as to the most desirable tracks are equal irrespective of students’ personal characteristics (gender, social background, etc.) (...).
Volatility Estimation when the Zero-Process is Nonstationary
Creators: name: Francq, Christian
name: Sucarrat, Genaro
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Financial returns are frequently nonstationary due to the nonstationary distribution of zeros. In daily stock returns, for example, the nonstationarity can be due to an upwards trend in liquidity over time, which may lead to a downwards trend in the zero-probability. In intraday returns, the zero-probability may be periodic: It is lower in periods where the opening hours of the main financial centres overlap, and higher otherwise. A nonstationary zero-process invalidates standard estimators of volatility models, since they rely on the assumption that returns are strictly stationary. We propose a GARCH model that accommodates a nonstationary zero-process, derive a 0-adjusted QMLE for the parameters of the model, and prove its consistency and asymptotic normality under mild assumptions. The volatility specification in our model can contain higher order ARCH and GARCH terms, and past zero-indicators as covariates. Simulations verify the asymptotic properties in finite samples, and show that the standard estimator is biased. An empirical study of daily and intradaily returns illustrate our results. They show how a nonstationary zero-process induces time-varying parameters in the conditional variance representation, and that the distribution of zero returns can have a strong impact on volatility predictions.
Fast convolutional neural networks on FPGAs with hls4ml
Creators: name: Aarrestad, Thea
name: Loncar, Vladimir
name: Ghielmetti, Nicolò
name: Pierini, Maurizio
name: Summers, Sioni
name: Ngadiuba, Jennifer
name: Petersson, Christoffer
name: Linander, Hampus
name: Iiyama, Yutaro
name: Di Guglielmo, Giuseppe
name: Duarte, Javier
name: Harris, Philip
name: Rankin, Dylan
name: Jindariani, Sergo
name: Pedro, Kevin
name: Tran, Nhan
name: Liu, Mia
name: Kreinar, Edward
name: Wu, Zhenbin
name: Hoang, Duc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We introduce an automated tool for deploying ultra low-latency, low-power deep neural networks with convolutional layers on FPGAs. By extending the hls4ml library, we demonstrate an inference latency of $5\,μ$s using convolutional architectures, targeting microsecond latency applications like those at the CERN Large Hadron Collider. Considering benchmark models trained on the Street View House Numbers Dataset, we demonstrate various methods for model compression in order to fit the computational constraints of a typical FPGA device used in trigger and data acquisition systems of particle detectors. In particular, we discuss pruning and quantization-aware training, and demonstrate how resource utilization can be significantly reduced with little to no loss in model accuracy. We show that the FPGA critical resource consumption can be reduced by 97% with zero loss in model accuracy, and by 99% when tolerating a 6% accuracy degradation.
description: 18 pages, 18 figures, 4 tables
Probing the Nature of EROs through ASTRO-F/AKARI observations
Creators: name: Mignano, A.
name: Saracco, P.
name: Longhetti, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a preliminary analysis of ASTRO-F data of a complete sample of ~150 EROs (R-K>5) down to K(Vega)<19, for which reliable photometric redshifts are available, in the range 0.8
description: 4 pages, 3 figures. To appear in the proceedings of `A Century of Cosmology', S. Servolo, August 2007, to be published in Il Nuovo Cimento
Explaining the scatter in the galaxy mass-metallicity relation with gas flows
Creators: name: van Loon, Maria L.
name: Mitchell, Peter D.
name: Schaye, Joop
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The physical origin of the scatter in the relation between galaxy stellar mass and the metallicity of the interstellar medium, i.e. the Mass-Metallicity Relation (MZR), reflects the relative importance of key processes in galaxy evolution. The \eagle cosmological hydrodynamical simulation is used to investigate the correlations between the residuals of the MZR and the residuals of the relations between stellar mass and, respectively, specific inflow, outflow and star formation rate as well as the gas fraction for central galaxies. At low redshift, all these residuals are found to be anti-correlated with the residuals of the MZR for $M_\star/\mathrm{M}_\odot \lesssim 10^{10}$. The correlations between the residuals of the MZR and the residuals of the other relations with mass are interrelated, but we find that gas fraction, specific inflow rate and specific outflow rate all have at least some independent influence on the scatter of the MZR. We find that, while for $M_\star/\mathrm{M}_\odot > 10^{10.4}$ the specific mass of the nuclear black hole is most important, for $M_\star/\mathrm{M}_\odot \lesssim 10^{10.3}$ gas fraction and specific inflow rate are the variables that correlate most strongly with the MZR scatter. The timescales involved in the residual correlations and the time that galaxies stay above the MZR are revealed to be a few Gyr. However, most galaxies that are below the MZR at $z=0$ have been below the MZR throughout their lifetimes.
description: Accepted for publication in MNRAS, 13 pages
Ethical Machine Learning in Health Care
Creators: name: Chen, Irene Y.
name: Pierson, Emma
name: Rose, Sherri
name: Joshi, Shalmali
name: Ferryman, Kadija
name: Ghassemi, Marzyeh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The use of machine learning (ML) in health care raises numerous ethical concerns, especially as models can amplify existing health inequities. Here, we outline ethical considerations for equitable ML in the advancement of health care. Specifically, we frame ethics of ML in health care through the lens of social justice. We describe ongoing efforts and outline challenges in a proposed pipeline of ethical ML in health, ranging from problem selection to post-deployment considerations. We close by summarizing recommendations to address these challenges.
description: Annual Reviews in Biomedical Data Science 2021
Kölner (Stadt-)Geschichten um 1800: Köln 1800 - Ein Tag im Leben...
Creators: name: Peterle-Pick, Benjamin
Publisher: name: Zenodo
Year: 2024

description: Dieses Spiel entstand im Wintersemester 2023/24 im Rahmen eines Arbeitskurses am Historischen Institut der Universität zu Köln und basiert auf der Open Source Software Twine.

Um das Spiel zu starten, müssen Sie die Datei downloaden und entpacken. Die „.html“ Datei, die Sie in dem entpackten Ordner finden, lässt sich daraufhin mit jedem gebräuchlichen Internetbrowser öffnen.
Indistinguishable Photons from a Single Molecule
Creators: name: Kiraz, A.
name: Ehrl, M.
name: Hellerer, Th.
name: Mustecaplioglu, O. E.
name: Brauchle, C.
name: Zumbusch, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the results of coincidence counting experiments at the output of a Michelson interferometer using the zero-phonon-line emission of a single molecule at $1.4 K$. Under continuous wave excitation, we observe the absence of coincidence counts as an indication of two-photon interference. This corresponds to the observation of Hong-Ou-Mandel correlations and proves the suitability of the zero-phonon-line emission of single molecules for applications in linear optics quantum computation.
description: To appear in Phys. Rev. Lett
PHENIX measurement of single electrons from charm and bottom decays at mid-rapidity in Au+Au collisions
Creators: name: McGlinchey, Darren
Publisher: name: Zenodo
Year: 2021
Subjects: qm15
phenix
charm
bottom
mid-rapidity
heavy flavor
electron
flow
raa
nuclear
modification
vtx
dca
au+au
d-meson
b-meson

description: Talk presented at the Quark Matter 2015 conference
Ching, Julia, Konfuzianismus und Christentum
Creators: name: Lee-Linke, Sung-Hee
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 39 Nr. 4 (1990): Ökumenische Rundschau, Band 39, Heft 4
It's a Gluino!
Creators: name: Alves, Alexandre
name: Eboli, Oscar
name: Plehn, Tilman
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For a long time it has been known that the like-sign dilepton signature can help establish the existence of a gluino at the LHC. To unambiguously claim that we see a strongly interacting Majorana fermion -- which we could call a gluino -- we need to prove that the particle responsible for the like-sign dilepton events is indeed a fermion. Using only angular correlations in the same gluino decay cascade which is used to measure its mass, we show how to distinguish a universal extra dimensional interpretation with a bosonic heavy gluon from supersymmetry with a fermionic gluino. Assuming a supersymmetric interpretation, we show how the same angular correlations can be used to study the left--right nature of the sfermions appearing in the decay chain.
description: 10 pages, 10 figures, version accepted for publication at Physical Review D
Quantum nonlocality in extended theories of gravity
Creators: name: Bittencourt, Victor A. S. V.
name: Blasone, Massimo
name: Illuminati, Fabrizio
name: Lambiase, Gaetano
name: Luciano, Giuseppe Gaetano
name: Petruzziello, Luciano
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate how pure-state Einstein-Podolsky-Rosen correlations in the internal degrees of freedom of massive particles are affected by a curved spacetime background described by extended theories of gravity. We consider models for which the corrections to the Einstein-Hilbert action are quadratic in the curvature invariants and we focus on the weak-field limit. We quantify nonlocal quantum correlations by means of the violation of the Clauser-Horne-Shimony-Holt inequality, and show how a curved background suppresses the violation by a leading term due to general relativity and a further contribution due to the corrections to Einstein gravity. Our results can be generalized to massless particles such as photon pairs and can thus be suitably exploited to devise precise experimental tests of extended models of gravity.
Supplementary information from Benchmarking Oxford nanopore read assemblers for high-quality molluscan genomes
Creators: name: Sun, Jin
name: Runsheng Li
name: Chen, Chong
name: Sigwart, Julia D.
name: Kocot, Kevin M.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60408 Genomics

description: Supplementary information: the commands used in this study
Fermi polaron in low-density spin-polarized neutron matter
Creators: name: Vidana, Isaac
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the properties of a spin-down neutron impurity immersed in a low-density free Fermi gas of spin-up neutrons. In particular, we analyze its energy ($E_\downarrow$), effective mass ($m^*_\downarrow$) and quasiparticle residue ($Z_\downarrow$). Results are compared with those of state-of-the-art quantum Monte Carlo calculations of the attractive Fermi polaron realized in ultracold atomic gases experiments, and with those of previous studies of the neutron polaron. Calculations are performed within the Brueckner--Hartree--Fock approach using the chiral two-body nucleon-nucleon interaction of Entem and Machleidt at N$^3$LO with a 500 MeV cut-off and the Argonne V18 phenomenological potential. Only contributions from the $^1S_0$ partial wave, which is the dominant one in the low-density region considered, are included. Contributions from three-nucleon forces are expected to be irrelevant at these densities and, therefore, are neglected in the calculation. Our results show that for Fermi momenta between $\sim 0.25$ and $\sim 0.45$ fm$^{-1}$ the energy, effective mass and quasiparticle residue of the impurity vary only slightly, respectively, in the ranges $-0.604\,E_F < E_\downarrow < -0.635\,E_F $, $1.300\,m < m^*_\downarrow < 1.085\, m$ and $0.741
description: 6 pages, 2 figures. Accepted for publication as a Letter in Physical Review C
Yagi, Seiichi, Die Front-Struktur als Brücke vom buddhistischen zum christlichen Denken
Creators: name: Weiß, Thomas
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 39 Nr. 4 (1990): Ökumenische Rundschau, Band 39, Heft 4
Two-dimensional Kinematics of a Bar and Central Disk in NGC5448
Creators: name: Fathi, K.
name: van de Ven, G.
name: Peletier, R.
name: Emsellem, E.
name: Falcon-Barroso, J.
name: Cappellari, M.
name: de Zeeuw, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse SAURON kinematic maps of the inner kpc of the early-type (Sa) barred spiral galaxy NGC 5448. The observed morphology and kinematics of the emission-line gas is patchy and perturbed, indicating clear departures from circular motion. The kinematics of the stars is more regular, and displays a small inner disk-like system embedded in a large-scale rotating structure. We focus on the [OIII] gas, and use a harmonic decomposition formalism to analyse the gas velocity field. The higher-order harmonic terms and the main kinematic features of the observed data are consistent with an analytically constructed simple bar model, which is derived using linear theory. Our study illustrates how the harmonic decomposition formalism can be used as a powerful tool to quantify non-circular motions in observed gas velocity fields.
description: To appear in the conference proceedings for the Island Universes conference (July 8-11, 2005). Please find the high resolution version in http://www.astro.uu.se/~kambiz/DOC/proceeding-terschelling.pdf
Di-Higgs production as a probe of flavor changing neutral Yukawa couplings
Creators: name: He, Shi-Ping
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Top partners are well motivated in many new physics models. Usually, vector like quarks $T_{L,R}$ are introduced to avoid the quantum anomaly. It is crucial to probe their interactions with the standard model particles. However, flavor changing neutral couplings are always difficult to detect directly in the current and future experiments. In this paper, we will show how to constrain the flavor changing neutral Yukawa coupling $Tth$ through the di-Higgs production indirectly. We consider the simplified model including a pair of gauge singlet $T_{L,R}$. Under the perturbative unitarity and experimental constraints, we choose $m_T=400~\mathrm{GeV},s_L=0.2$ and $m_T=800~\mathrm{GeV},s_L=0.1$ as benchmark points. After the analysis of amplitude and evaluation of the numerical cross sections, we find that the present constraints from di-Higgs production have already surpassed the unitarity bound because of the $(y_{L,R}^{tT})^4$ behavior. For the case of $m_T=400~\mathrm{GeV}$ and $s_L=0.2$, $\mathrm{Re}y_{L,R}^{tT}$ and $\mathrm{Im}y_{L,R}^{tT}$ can be bounded optimally in the range $(-0.4, 0.4)$ at HL-LHC with $2σ$ CL. For the case of $m_T=800~\mathrm{GeV}$ and $s_L=0.1$, $\mathrm{Re}y_{L,R}^{tT}$ and $\mathrm{Im}y_{L,R}^{tT}$ can be bounded optimally in the range $(-0.5, 0.5)$ at HL-LHC with $2σ$ CL. The anomalous triple Higgs coupling $δ_{hhh}$ can also affect the constraints on $y_{L,R}^{tT}$. Finally, we find that the top quark electric dipole moment can give stronger bounds of $y_{L,R}^{tT}$ in the off-axis regions for some scenarios.
description: 30 pages, 8 figures, and 5 tables. References added and typos corrected. Comments are welcome
Critical data studies meets discard studies: Waste data reflectivity in digital urban waste tracking system
Creators: name: Strzelecka, Celina
Publisher: name: Zenodo
Year: 2024
Subjects: subject: digitalization
subject: discard studies
subject: waste data
subject: data journey
subject: critical data studies
subject: data reflectivity
subject: dataveillance
subject: Digital Urban Waste Tracking System
subject: Waste management
subject: Smart sensors
subject: Smart cities
subject: smart waste management technology

description: Abstract

This article examines the implementation and impact of the Digital Urban Waste Tracking System (DUWTS) in Poland, a smart waste management technology designed to enhance waste segregation practices in urban environments. DUWTS combines public administration and private sector efforts to oversee proper waste disposal through advanced dataveillance technologies. The system utilizes electronic ground containers equipped with sensors and QR codes to weigh and record waste, aiming to improve recycling levels and manage waste data. The purpose of the research is to critically explore the concept of "waste data reflectivity," highlighting the socio-technological implications of data representation in waste management. The major findings reveal significant distortions and errors in data reflection, impacting various stakeholders, including municipalities, waste disposal companies, and residents. The study concludes that while DUWTS represents a technological advancement, it also perpetuates existing challenges in waste management by obscuring true complexities and responsibilities. Integrating critical discard studies and critical data studies, the article provides a nuanced understanding of the data-driven waste management systems' complexities and challenges.

Keywords: digitalization, discard studies, waste data, data journey, critical data studies, data reflectivity, dataveillance, Digital Urban Waste Tracking System, smart waste management technology

Ethics Approval

The research project description, including ethical considerations, data management plan, and consent forms, is available at the Social Data Repository: https://doi.org/10.60894/ANHJNA.

Funder Statement

This article was written as part of the project AUTO-WELF: Automating Welfare – Algorithmic Infrastructures for Human Flourishing in Europe. The AUTO-WELF project is supported by the National Science Centre, Poland (grant no. 2021/03/Y/HS5/00263) under the CHANSE ERA-NET Co-fund programme, which has received funding from the European Union’s Horizon 2020 Research and Innovation Programme, under Grant Agreement no. 101004509.
DigCom Analyses LCA/LPA
Creators: name: JINGNI HE
name: De Vries, Dian A.
name: Huysmans, Frank
name: Piotrowski, Jessica
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Communication
subject: Online and Distance Education
subject: Science and Technology Studies
subject: Disability and Equity in Education
subject: Science and Technology Policy
subject: Public Policy
subject: Education Policy
subject: Information Literacy
subject: Life Sciences
subject: Social Psychology
subject: Public Affairs, Public Policy and Public Administration
subject: Social Welfare
subject: Education
subject: Social Media
subject: Library and Information Science
subject: Educational Sociology
subject: Social and Behavioral Sciences
subject: Inequality and Stratification
subject: Psychology
subject: FOS: Psychology
subject: Sociology
subject: FOS: Sociology
subject: Communication Technology and New Media
subject: Social Policy
subject: Educational Assessment, Evaluation, and Research
subject: Adult and Continuing Education
subject: digital competence
subject: digital knowledge
subject: digital skills

description: The primary objective of this part of the DigIQ-project is to identify heterogeneity among Dutch citizens in terms of their digital competence. The findings of this analysis will answer one of the research questions of the DigCom project: Which groups within the Dutch population are most in need of support? Specifically, the goal of this pre-registration is to 1) Identify potential variations in Dutch citizens' digital competence profiles; 2) Determine the number of distinct groups that can be classified; 3) Investigate potential relationships between demographic and other characteristics of Dutch citizens and the identified typology.
Woods-Saxon-type of mean-field potentials with effective mass derived from the D1S Gogny force
Creators: name: Bhagwat, A.
name: Centelles, M.
name: Viñas, X.
name: Schuck, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Analytic average mean-field potentials of the Fermi-function (Woods-Saxon) type for the whole nuclear chart with space-dependent effective mass are deduced from the D1S Gogny force. Those ready-for-use potentials are advertised as an alternative to other existing phenomenological mean-field potentials.
description: 14 pages, 5 Figures, 2 Tables
Urb farm : agriculture on the edge
Creators: name: Greig, Bruce
Publisher: name: University of British Columbia
Year: 2009

description: This design thesis explores the relationship between agricultural lands and urban areas in close proximity. The City of Richmond, British Columbia is evaluated for how its landscape structure is defined by its associated agricultural lands. The important pathways by which people move through and between the urban and agricultural landscapes are identified, as these play an important role in shaping the city's identity. A closer look is taken at the Gilmore area in south Richmond; parcel sizes and trends in ownership and land use are used to project the future of this agricultural area which is surrounded by urban development. Eight strategies are developed which aim at protecting agricultural lands, strengthening their connection to urban areas, and/or improving their identity within the larger context. The strategies all have the goal of enhancing the viability of food production in close proximity to the city. At the same time, they aim at achieving a social benefit by making the experience of foodlands a more positive part of the daily life of the city. The strategies vary in their size, form, demographic targets, positive as well as negative side-effects which might impact agricultural lands, and the steps that would be necessary to facilitate their implementation. While the designs demonstrate these strategies as applied to specific sites, it is hoped that the issues they address are sufficiently clear to be applicable to other areas with similar conditions of agricultural/urban proximity.
Physical Process Version of the First Law of Thermodynamics for Black Holes in Higher Dimensional Gravity
Creators: name: Rogatko, Marek
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The problem of physical process version of the first law of black hole thermodynamics for charged rotating black hole in n-dimensional gravity is elaborated. The formulae for the first order variations of mass, angular momentum and canonical energy in Einstein (n-2)-gauge form field theory are derived. These variations are expressed by means of the perturbed matter energy momentum tensor and matter current density.
description: 6 pages, REVTEX, to be published in Phys.Rev.D15
A Price-Anticipating Resource Allocation Mechanism for Distributed Shared Clusters
Creators: name: Feldman, Michal
name: Lai, Kevin
name: Zhang, Li
Publisher: name: arXiv
Year: 2005
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences
subject: C.2.4; D.4.1; D.4.7; K.6.0

description: In this paper we formulate the fixed budget resource allocation game to understand the performance of a distributed market-based resource allocation system. Multiple users decide how to distribute their budget (bids) among multiple machines according to their individual preferences to maximize their individual utility. We look at both the efficiency and the fairness of the allocation at the equilibrium, where fairness is evaluated through the measures of utility uniformity and envy-freeness. We show analytically and through simulations that despite being highly decentralized, such a system converges quickly to an equilibrium and unlike the social optimum that achieves high efficiency but poor fairness, the proposed allocation scheme achieves a nice balance of high degrees of efficiency and fairness at the equilibrium.
Fluctuations of order parameter in an $SU(N_c)$ effective model
Creators: name: Lo, Pok Man
name: Redlich, Krzysztof
name: Sasaki, Chihiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate features of the deconfinement phase transition in an $SU(N_c)$ gauge theory as revealed by fluctuations of the order parameter. The tool of choice is an effective model built from one-loop expressions of the field determinants of gluon and ghost, in the presence of a Polyakov loop background field. We show that the curvature masses associated with the Cartan angles, which serve as a proxy to study the $A_0$-gluon screening mass, show a characteristic dip in the vicinity of the transition temperature. The strength of the observables, which reflects a competition between the confining and the deconfining forces, is sensitive to assumptions of dynamics, thus provides an interesting link between the $Z(N_c)$ vacuum structure and the properties of gluon and ghost propagators.
description: 15 pages, 6 figures, typos. corrected, version appear in PRD
Model-Independent Results for SU(3) Violation in Twist-3 Light-Cone Distribution Functions
Creators: name: Chen, Jiunn-Wei
name: Tsai, Hung-Ming
name: Weng, Ke-Chuan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using chiral symmetry we investigate the leading SU(3) violation in the complete set of quark twist-3 light-cone distribution functions of the pion, kaon, and eta. It is shown that terms non-analytic in the quark masses do not affect the shape, and only appear in the normalization constants. Predictive power is retained including the leading analytic m_{q} operators. With the symmetry violating corrections we derive useful model-independent relations between the distributions of pion, kaon and eta. We also comment on the calculations of the moments of these distributions using lattice QCD and light-cone sum rules.
description: 18 pages, 1 figure
Mahler Measure of 3D Landau-Ginzburg Potentials
Creators: name: Fei, Jiarui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 11R06, Secondary 11F67

description: We express the Mahler measures of $23$ families of Laurent polynomials in terms of Eisenstein-Kronecker series. These Laurent polynomials arise as Landau-Ginzburg potentials on Fano $3$-folds, $16$ of which define $K3$ hypersurfaces of generic Picard rank $19$, and the rest are of generic Picard rank $< 19$. We relate the Mahler measure at each rational singular moduli to the value at $3$ of the $L$-function of some weight-$3$ newform. Moreover, we find $10$ exotic relations among the Mahler measures of these families.
description: 36 pages, many tables, comments are welcome; v2 corrected a few typos, and incorporated non-squarefree cases in Conjecture 4.4
An Accurate Finite Element Method for the Numerical Solution of Isothermal and Incompressible Flow of Viscous Fluid
Creators: name: Abali, Bilen Emek
Publisher: name: Technische Universität Berlin
Year: 2019
Subjects: subject: 600 Technik, Technologie
subject: finite element method
subject: fluid dynamics
subject: computation
subject: viscous fluid flow

description: Despite its numerical challenges, finite element method is used to compute viscous fluid flow. A consensus on the cause of numerical problems has been reached; however, general algorithms—allowing a robust and accurate simulation for any process—are still missing. Either a very high computational cost is necessary for a direct numerical solution (DNS) or some limiting procedure is used by adding artificial dissipation to the system. These stabilization methods are useful; however, they are often applied relative to the element size such that a local monotonous convergence is challenging to acquire. We need a computational strategy for solving viscous fluid flow using solely the balance equations. In this work, we present a general procedure solving fluid mechanics problems without use of any stabilization or splitting schemes. Hence, its generalization to multiphysics applications is straightforward. We discuss emerging numerical problems and present the methodology rigorously. Implementation is achieved by using open-source packages and the accuracy as well as the robustness is demonstrated by comparing results to the closed-form solutions and also by solving well-known benchmarking problems.
Is Ghana Ready to Attain Sustainable Development Goal (SDG) Number 7?—A Comprehensive Assessment of Its Renewable Energy Potential and Pitfalls
Creators: name: Acheampong, Michael
name: Yu, Qiuyan
name: Cansu Ertem, Funda
name: Deba Enomah Ebude, Lucy
name: Tanim, Shakhawat
name: Eduful, Michael
name: Vaziri, Mehrdad
name: Ananga, Erick
Publisher: name: Technische Universität Berlin
Year: 2019
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: renewable energy
subject: Ghana
subject: sustainable development goals
subject: biofuel
subject: solar energy

description: Ghana has declared support for the UN Sustainable Development Goal (SDG) number seven which most importantly target ensuring universal access to affordable, reliable and modern energy services. This target presents a formidable challenge to Ghana because the country still relies mainly on traditional biomass as its primary source of energy coupled with a chronically fragile hydropower sector. In this study, we assess Ghana’s potential in achieving sustainable goal number seven. Specifically, we comprehensively review the breakthroughs and impediments Ghana has experienced in its efforts towards improving its renewable energy potential. We note that while Ghana has made significant stride toward attaining energy efficiency, its effort at large-scale biofuel development hit a snag due to issues of “land grabbing” emanating both from local and foreign entities. In another breadth, several pilot studies and research initiatives have demonstrated the possibility of diversifying the energy sector with other renewable energy options including solar, wind, and small hydro. In spite of challenges encountered with the development of biofuels, our review concludes that Ghana retains vast reserves of renewable energy potential, which can be harnessed with the constantly improving technological advancements as it pursues SDG number seven.
A New Method for Isolating M31 Red Giant Stars: The Discovery of Stars out to a Radial Distance of 165 Kiloparsecs
Creators: name: Gilbert, Karoline M.
name: Guhathakurta, Puragra
name: Kalirai, Jasonjot S.
name: Rich, R. Michael
name: Majewski, Steven R.
name: Ostheimer, James C.
name: Reitzel, David B.
name: Cenarro, A. Javier
name: Cooper, Michael C.
name: Luine, Carynn
name: Patterson, Richard J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a method for isolating a clean sample of red giant stars in the outerregions of the Andromeda spiral galaxy (M31) from an ongoing spectroscopic survey using the DEIMOS instrument on the Keck 10-m telescope. The survey aims to study the kinematics, global structure, substructure, and metallicity of M31's halo. Although most of our spectroscopic targets were photometrically screened to reject foreground Milky Way dwarf star contaminants, the latter class of objects still constitutes a substantial fraction of the observed spectra in the sparse outer halo. Our likelihood-based method for isolating M31 red giants uses five criteria: (1) radial velocity, (2) photometry in the intermediate-width DDO51 band to measure the strength of the MgH/Mgb absorption features, (3) strength of the Na I 8190A absorption line doublet, (4) location within an (I, V-I) color-magnitude diagram, and (5) comparison of photometric (CMD-based) versus spectroscopic (Ca II 8500A triplet-based) metallicity estimates. We also discuss K I and TiO diagnostics for giant/dwarf separation that might be useful in future analyses. Training sets consisting of definite M31 red giants and Galactic dwarf stars are used to derive empirical probabilitydistribution functions for each diagnostic. These functions are used to calculate the likelihood that a given star is a red giant in M31 versus a Milky Way dwarf. By applying this diagnostic method to our spectroscopic data set, we isolate 40 M31 red giants beyond a projected distance of R = 60 kpc from the galaxy's center, including three out at R ~ 165 kpc. The ability to identify individual M31 red giants gives us an unprecedented level of sensitivity in studying the properties of the galaxy's outer halo.
description: Accepted for publication in the Astrophysical Journal (revised relative to original submission): 57 pages, including 5 embedded tables and 19 figures
PHENIX measurements of the collision system dependence of heavy quarkonia production
Creators: name: Frawley, Anthony
Publisher: name: Zenodo
Year: 2021
Subjects: qm15
phenix
heavy flavor
J/Ψ
muon arms
fvtx
u+u
nuclear
modification
raa
multiplicity
p+p
p+al
p+au
mid-rapidity
forward-rapidity
backward-rapidity

description: Talk presented at the Quark Matter 2015 conference
Electroexcitation of nucleon resonances at Q^2=0.65 GeV/c^2 from a combined analysis of single- and double-pion electroproduction data
Creators: name: Aznauryan, I. G.
name: Burkert, V. D.
name: Fedotov, G. V.
name: Ishkhanov, B. S.
name: Mokeev, V. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Data on single- and double-charged pion electroproduction off protons are successfully described in the second and third nucleon resonance regions with common N* photocouplings. The analysis was carried out using separate isobar models for both reactions. From the combined analysis of two exclusive channels, the gamma* p --> N*+ helicity amplitudes are obtained for the resonances P11(1440), D13(1520), S31(1620), S11(1650), F15(1680), D33(1700), D13(1700), and P13(1720) at Q2=0.65 GeV/c^2.
description: 12 pages, 12 figures (eps), Published in PHYSICAL REVIEW C 72, 045201 (2005)
Likeability and Perceived Well-Being
Creators: name: Stewart, Jessica Wallace
name: Biesanz, Jeremy C.
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: This study seeks to better understand the correlates of likeability. Specifically, we are interested in actual well-being and perceived well-being, and how these constructs are related to each other as well as likeability itself.
Trip-Based Public Transit Routing
Creators: name: Witt, Sascha
Publisher: name: Karlsruhe
Year: 2015

description: We study the problem of computing all Pareto-optimal journeys in a public transit network regarding the two criteria of arrival time and number of transfers taken. We take a novel approach, focusing on trips and transfers between them, allowing fine-grained modeling. Our experiments on the metropolitan network of London show that the algorithm computes full 24-hour profiles in 70ms after a preprocessing phase of 30s, allowing fast queries in dynamic scenarios.
Stellar characterisation of FGKM dwarfs. Possible impact on the surface brightness color relation.
Creators: name: Ibañez Bustos, Romina V.
Publisher: name: Zenodo
Year: 2024

description: The study of stellar magnetic activity on different time scales is important because it provides insight into the physical mechanism behind the interaction between convection and the rotation of stars. On the one hand, the study of long-term activity through different spectral lines has been possible using spectroscopic data obtained from ground-based observations. On the other hand, satellite photometric observations (e.g. Kepler and TESS) permit us to deepen the field of short-term studies by obtaining stellar rotation periods and flare frequencies with higher precision. In addition, interferometric data allow us to study these objects in more detail and to characterise them by obtaining angular diameters, limb darkening, etc., which are essential parameters for the analysis of stellar and planetary characterisation.

The combination of the three observational techniques mentioned above allows us to make progress in the understanding of the physical phenomena that govern the interior and exterior of stars, achieving a better understanding from the stellar dynamo to the planets that orbit around dwarf stars.

In this work we present the study of some FGKM dwarf stars by spectroscopic and photometric observations as well as some preliminary results obtained through the interferometric technique using the Stellar Parameters and Images with a Cophased Array (SPICA) interferometer installed at the Center for High Angular Resolution Astronomy (CHARA) at the Mount Wilson Observatory.
The Li-F-H Ternary System at High Pressures
Creators: name: Bi, Tiange
name: Shamp, Andrew
name: Terpstra, Tyson
name: Hemley, Russell J.
name: Zurek, Eva
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Evolutionary crystal structure prediction searches have been employed to explore the ternary Li-F-H system at 300 GPa. Metastable phases were uncovered within the static lattice approximation, with LiF$_3$H$_2$, LiF$_2$H, Li$_3$F$_4$H, LiF$_4$H$_4$, Li$_2$F$_3$H and LiF$_3$H lying within 50 meV/atom of the 0 K convex hull. All of these phases contain H$_n$F$_{n+1}^-$ ($n$ = 1; 2) anions, and Li$^+$ cations. Other structural motifs such as LiF slabs, H$_3^+$ molecules, and F$^{δ-}$ ions are present in some of the low enthalpy Li-F-H structures. The bonding within the H$_n$F$_{n+1}^-$ molecules, which may be bent or linear, symmetric or asymmetric, is analyzed. The five phases closest to the hull are insulators, while LiF$_3$H is metallic and predicted to have a vanishingly small superconducting critical temperature. This study lays the foundation for future investigations of the role of temperature and anharmonicity on the stability and properties of compounds and alloys in the Li-F-H ternary system.
description: 11 pages, 4 figures, 1 table
Infant's Early Understanding of Caregiving Relationships
Creators: name: Steele, Christina M.
name: Azwayla Taylor
name: Tatone, Denis
name: Richardson, Megan
name: Thomas, Ashley J.
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Despite the centrality of caregiving relationships in the lives of infants and children, little is known about whether and how infants represent these relationships. Caregiving relationships are characterized by strong attachment and asymmetry in obligation and skills. The current studies investigate whether 8-to-10-month-old infants recognize caregiving relationships. They test the hypothesis that infants do this by attending to two cues: affiliative touch and physical size, and use this information to predict who will respond to distress.
Theoretical Isochrones with Extinction in the K Band
Creators: name: Kim, Sungsoo S.
name: Figer, Donald F.
name: Lee, Myung Gyoon
name: Oh, Seungkyung
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate theoretical isochrones in a consistent way for five filters (K, K', Ks, F205W, and F222M) in the atmospheric window between 1.9 and 2.5 micron using the Padova stellar evolutionary models by Girardi et al. Even when displayed in the same Vega magnitude system, the near-infrared colors of the same isochrone can differ by up to 0.18 mag at its bright end, depending on the filter. We present magnitude transformations between K-band filters as a function of color from H and K band filters. Isochrones with extinction at K of up to 6 mag are also presented. We find that care is needed when comparing extinction values that are estimated using different filter sets in the K band, in particular when comparing those of atmospheric and space filter sets: extinction values for space filters can be in error by up to 0.3 mag. To reduce this error, we introduce an "effective extinction slope" for each filter set and isochrone model, which describes the extinction behavior of isochrones in the color-magnitude diagram more correctly than the actual extinction law. Our calculation also suggests that the extinction law implied by the observations of Rieke et al. for wavelengths between the H and K bands is better described by a power-law function with an exponent of 1.61 instead of 1.55, which is commonly used with an assumption that the transmission functions of H and K filters are Dirac delta functions.
A Primitive Variable Discrete Exterior Calculus Discretization of Incompressible Navier-Stokes Equations over Surface Simplicial Meshes
Creators: name: Jagad, Pankaj
name: Abukhwejah, Abdullah
name: Mohamed, Mamdouh
name: Samtaney, Ravi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A conservative primitive variable discrete exterior calculus (DEC) discretization of the Navier-Stokes equations is performed. An existing DEC method (Mohamed, M. S., Hirani, A. N., Samtaney, R. (2016). Discrete exterior calculus discretization of incompressible Navier-Stokes equations over surface simplicial meshes. Journal of Computational Physics, 312, 175-191) is modified to this end, and is extended to include the energy-preserving time integration and the Coriolis force to enhance its applicability to investigate the late time behavior of flows on rotating surfaces, i.e., that of the planetary flows. The simulation experiments show second order accuracy of the scheme for the structured-triangular meshes, and first order accuracy for the otherwise unstructured meshes. The method exhibits second order kinetic energy relative error convergence rate with mesh size for inviscid flows. The test case of flow on a rotating sphere demonstrates that the method preserves the stationary state, and conserves the inviscid invariants over an extended period of time.
A Behavioural Approach to Addressing Threats to the Democratic Process
Creators: name: Campbell, Eoin
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Communication
subject: Social Media
subject: Cognitive Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: behavioural
subject: behavioural science
subject: brands
subject: democracy
subject: electoral process
subject: fake news
subject: false information
subject: mis
subject: national statistics
subject: politics
subject: psychology
subject: social media

description: Thinks Behavioural Team, in partnership with Harry-Tattan Birch (UCL) will conduct a randomised control trial will aim to produce new evidence about how to combat electoral mis and disinformation online ahead of the UK’s next general election. The experiment will test the impact of choice architecture (flagging social media posts) and inoculation interventions (training people to spot mis/disinformation) on interaction with both legitimate and mis/disinformation in a social media simulation. It will be conducted with 1,500 participants.