cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 2 of Lingering symptoms in non-hospitalized patients with COVID-19 – a prospective survey study of symptom expression and effects on mental health in Germany
Creators: name: Rohde, Jörn
name: Bundschuh, René
name: Kaußner, Yvonne
name: Simmenroth, Anne
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Mental Health

description: Supplementary Material 2.
Hyperon Dynamics in Heavy-ion Collisions near threshold energy
Creators: name: Zhang, Ding-Chang
name: Cheng, Hui-Gan
name: Feng, Zhao-Qing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Within the framework of quantum molecular dynamics transport model, the isospin and in-medium effects on the hyperon production in the reaction of $^{197}$Au + $^{197}$Au are investigated thoroughly. A repulsive hyperon-nucleon potential from the chiral effective field theory is implemented into the model, which is related to the hyperon momentum and baryon density. The correction on threshold energy of the elementary hyperon cross section is taken into account. It is found that the $Σ$ yields are suppressed in the domain of midrapidity and kinetic energy spectra with the potential. The hyperons are emitted in the reaction plane because of the strangeness exchange reaction and reabsorption process in nuclear medium. The $Σ^{-}/Σ^{+}$ ratio depends on the stiffness of nuclear symmetry energy, in particular in the high-energy region (above 500 MeV).
description: 5 pages, 4 figures
On explicit free field realizations of current algebras
Creators: name: Yang, Wen-Li
name: Zhang, Yao-Zhong
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the explicit free field representations of the current algebras $so(2n)_k$, $so(2n+1)_k$ and $sp(2n)_k$ for a generic positive integer $n$ and an arbitrary level $k$. The corresponding energy-momentum tensors and screening currents of the first kind are also given in terms of free fields.
description: Latex file, 25 pages
Configuration Mixing within the Energy Density Functional Formalism: Removing Spurious Contributions from Non-Diagonal Energy Kernels
Creators: name: Lacroix, D.
name: Duguet, T.
name: Bender, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Multi-reference calculations along the lines of the Generator Coordinate Method or the restoration of broken symmetries within the nuclear Energy Density Functional (EDF) framework are becoming a standard tool in nuclear structure physics. These calculations rely on the extension of a single-reference energy functional, of the Gogny or the Skyrme types, to non-diagonal energy kernels. There is no rigorous constructive framework for this extension so far. The commonly accepted way proceeds by formal analogy with the expressions obtained when applying the generalized Wick theorem to the non-diagonal matrix element of a Hamilton operator between two product states. It is pointed out that this procedure is ill-defined when extended to EDF calculations as the generalized Wick theorem is taken outside of its range of applicability. In particular, such a procedure is responsible for the appearance of spurious divergences and steps in multi-reference EDF energies, as was recently observed in calculations restoring particle number or angular momentum. In the present work, we give a formal analysis of the origin of this problem for calculations with and without pairing, i.e. constructing the density matrices from either Slater determinants or quasi-particle vacua. We propose a correction to energy kernels that removes the divergences and steps, and which is applicable to calculations based on any symmetry restoration or generator coordinate. The method is formally illustrated for particle number restoration and is specified to configuration mixing calculations based on Slater determinants.
description: 27 pages, 1 figure, accepted for publication in PRC
title: Rahmenkonzept der Universitätsschule Potsdam
Creators: name: Apelojg, Benjamin
name: Bosse, Stefanie
name: Geschke, Doreen
name: Hausner, Christian
name: Jennek, Julia
name: Liebner, Saskia
name: Lipka, Marlies
name: Marx, Alexandra
name: Plötner, Kathleen
name: Reimann, Christina
name: Sievert, Florian
name: Spörer, Nadine
name: Teke, Gülay
name: Völkner, Katrin
name: Wabnitz, Juliane
name: Waschke, Lene
name: Zielke, Sonja
name: Zrenner, Laura
name: Konzeptteam Universitätsschule Potsdam
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 370 Bildung und Erziehung
subject: Bildungsgerechtigkeit
subject: Forschung-Praxis-Kooperation
subject: Lehrkräftebildung
subject: Universitätsschule
subject: Wissenstransfer

description: Das Rahmenkonzept der Universitätsschule Potsdam beschreibt die Wertegrundlage und das  pädagogisch-didaktische sowie das wissenschaftliche Fundament einer zu gründenden Universitätsschule Potsdam. Wie andere Universitätsschulen soll sich auch diese Schule durch eine enge und institutionalisierte Beziehung zwischen Schule und Universität auszeichnen, die den ständigen Wissenstransfer zwischen Schulpraxis, Wissenschaft, Lehrkräftebildung und Schulverwaltung unterstützt. Das Rahmenkonzept legt die Grundlagen für eine inklusive Schule, deren Schüler:innen einen Querschnitt der Gesellschaft abbilden, und die in ungleichheitssensiblen Bildungsangeboten alle Bildungsabschlüsse des Landes Brandenburg anbietet. Die Universitätsschule soll den starken Segregationsprozessen in Potsdam entgegenwirken.
Im Leitbild werden die Grundwerte (Nachhaltigkeit, Inklusion und Bildungsgerechtigkeit, Menschenrechte und Demokratie, Gemeinschaft, Ganzheitlichkeit) und die Bildungsziele (Transferfähigkeit, kritisch-reflexives Denken und lebensbegleitendes Lernen, Diversitätsbewusstsein und Transkulturalität, Selbstkompetenz und Beziehungskompetenz, Kulturtechniken und digitale Kompetenz) der Universitätsschule dargestellt. Das Pädagogische Konzept veranschaulicht, wie Werte und Bildungsziele in den Bereichen Schulform, Schulkultur, Lernkultur sowie Lernorte und Lernumgebung ausgestaltet werden können. Schließlich wird die Universitätsschule als lernende und lehrende Institution beschrieben, die ein Ort des Transfers von Bildungsinnovationen ist. Dafür soll eine Transferwerkstatt in der Schule verankert werden, die den Wissensaustausch der schulrelevanten Akteur:innen unterstützt und gestaltet.
Infrared Renormalons in Collider Processes
Creators: name: Ravasio, Silvia Ferrario
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Precise theoretical predictions are a key ingredient for an accurate determination of the structure of the Langrangian of particle physics, including its free parameters, which summarizes our understanding of the fundamental interactions among particles. Furthermore, due to the absence of clear new-physics signals, precise theoretical calculations are required in order to pin down possible subtle deviations from the Standard Model predictions. The error associated with such calculations must be scrutinized, as non-perturbative power corrections, dubbed infrared renormalons, can limit the ultimate precision of truncated perturbative expansions in quantum chromodynamics. In this review we focus on linear power corrections that can arise in certain kinematic distributions relevant for collider phenomenology where an operator product expansion is missing, e.g. those obtained from the top-quark decay products, shape observables and the transverse momentum of massive gauge bosons. Only the last one is found to be free from such corrections, while the mass of the system comprising the top decay products has a larger power correction if the perturbative expansion is expressed in terms of a short-distance mass instead of the pole mass. A proper modelization of non-perturbative corrections is crucial in the context of shape observables to obtain reliable strong coupling constant extractions.
description: Contribution to EPJ ST "Renormalons and Hyperasymptotics in QCD"
Model ages and applied whole rock geochemistry of Ag-Pb-Zn veins, Keno Hill - Galena Hill Mining Camp, Yukon Territory
Creators: name: Tessari, Oscar Jose
Publisher: name: University of British Columbia
Year: 2010

description: A detailed methodology has been devised and tested for establishing metal zoning patterns in and about oreshoots within the plane of Ag-Pb-Zn veins of the Keno Hill - Galena Hill mining camp, Yukon Territory, using whole rock vein geochemistry of run-of-mine samples. These ideal metal distribution patterns are easily interpretable in more classical zoning terms as mineral distribution patterns. To establish a zoning model samples that span a wide range of grades are rearranged in order of decreasing silver contents. The resulting "rearranged" profiles for other elements are then evaluated relative to silver. Computer-based curve fitting methods are useful means of generalizing these "rearranged" metal profiles. The foregoing procedure has been used to develop a general model for the Keno Hill - Galena Hill camp based on analytical results from 3 main deposits (Keno, Husky, No Cash) including 6 veins. Essential character of the model is embodied in analyses of Ag, Pb, Zn, and Ca and the Zn/Ag ratio. Additional but in cases ambiguous detail is added to the model by Hg, and Co and/or Ni analyses. These elements allow vein mineralogy to be monitored in a quantitative manner and provide a practical zoning model that can be used as an exploration, tool in evaluating underground workings for proximity to oreshoots in the more than 60 deposits known in the camp. A companion study involving whole rock K-Ar age determinations of small stockwork zones adjacent to Ag-Pb-Zn veins indicated an age of mineralization of about 87±2 Ma. for the Ag-Pb-Zn veins.
Additional file 1 of Variations in adverse pregnancy and birth outcomes among Latin American and Caribbean-Born birthing people by region of origin, California birth cohort, 2007–2020
Creators: name: Iraqi, Salma
name: Goldenberg, Shira
name: Baer, Rebecca J.
name: Lemus, Hector
name: Bandoli, Gretchen
Publisher: name: figshare
Year: 2025
Subjects: Cell Biology
Molecular Biology
Biotechnology
Biological Sciences not elsewhere classified
Developmental Biology
Cancer
Science Policy
Mental Health

description: Supplementary Material 1
Chiral Properties of Baryon Fields with Flavor SU(3) Symmetry
Creators: name: Chen, Hua-Xing
name: Dmitrasinovic, V.
name: Hosaka, Atsushi
name: Nagata, Keitaro
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate chiral properties of local (non-derivative) fields of baryons consisting of three quarks with flavor SU(3) symmetry. We construct explicitly independent local three-quark fields belonging to definite Lorentz and flavor representations. Chiral symmetry is spontaneously broken and therefore the baryon fields can have different chiral representations. It turns out that the allowed chiral representations are strongly correlated with the Lorentz group representations due to the color and spatial structure of the local three-quark fields. We discuss some implications of the allowed chiral symmetry representations on phenomenological Lagrangians with chiral U(3)_L \otimes U(3)_R symmetry.
description: 21 pages, comments and suggestions welcome
Obscured star formation in intermediate-density environments: A Spitzer study of the Abell 901/902 supercluster
Creators: name: Gallazzi, A.
name: Bell, E. F.
name: Wolf, C.
name: Gray, M. E.
name: Papovich, C.
name: Barden, M.
name: Peng, C. Y.
name: Meisenheimer, K.
name: Heymans, C.
name: van Kampen, E.
name: Gilmour, R.
name: Balogh, M.
name: McIntosh, D. H.
name: Bacon, D.
name: Barazza, F. D.
name: Boehm, A.
name: Caldwell, J. A. R.
name: Haeussler, B.
name: Jahnke, K.
name: Jogee, S.
name: Lane, K.
name: Robaina, A. R.
name: Sanchez, S. F.
name: Taylor, A.
name: Wisotzki, L.
name: Zheng, X.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore the amount of obscured star-formation as a function of environment in the A901/902 supercluster at z=0.165 in conjunction with a field sample drawn from the A901 and CDFS fields, imaged with HST as part of the STAGES and GEMS surveys. We combine the COMBO-17 near-UV/optical SED with Spitzer 24um photometry to estimate both the unobscured and obscured star formation in galaxies with Mstar>10^{10}Msun. We find that the star formation activity in massive galaxies is suppressed in dense environments, in agreement with previous studies. Yet, nearly 40% of the star-forming galaxies have red optical colors at intermediate and high densities. These red systems are not starbursting; they have star formation rates per unit stellar mass similar to or lower than blue star-forming galaxies. More than half of the red star-forming galaxies have low IR-to-UV luminosity ratios, relatively high Sersic indices and they are equally abundant at all densities. They might be gradually quenching their star-formation, possibly but not necessarily under the influence of gas-removing environmental processes. The other >40% of the red star-forming galaxies have high IR-to-UV luminosity ratios, indicative of high dust obscuration. They have relatively high specific star formation rates and are more abundant at intermediate densities. Our results indicate that while there is an overall suppression in the star-forming galaxy fraction with density, the small amount of star formation surviving the cluster environment is to a large extent obscured, suggesting that environmental interactions trigger a phase of obscured star formation, before complete quenching.
description: 18 pages, 14 figures, ApJ in press, corrected and added references
Code for the accepted paper "Dense and fast: Achieving shortest unimpeded retrieval with a minimum number of empty cells in puzzle-based storage systems"
Creators: name: Yu, Hu
Publisher: name: Zenodo
Year: 2021

description: Source code for deriving the results shown in Figure 15, Figure 17, and Figure 18 of the paper titled "Dense and fast: Achieving shortest unimpeded retrieval with a minimum number of empty cells in puzzle-based storage systems" .
Lift force acting on an intruder in dense, granular shear flows
Creators: name: Liu, Meng
name: Müller, Christoph R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report a new lift force model for intruders in dense, granular shear flows. Our derivation is based on the thermal buoyancy model of Trujillo & Hermann[L. Trujillo and H. J. Herrmann, Physica A 330, 519 (2003).], but takes into account both granular temperature and pressure differences in the derivation of the net buoyancy force acting on the intruder. In a second step the model is extended to take into account also density differences between the intruder and the bed particles. The model predicts very well the rising and sinking of intruders, the lift force acting on intruders as determined by discrete element model (DEM) simulations and the neutral-buoyancy limit of intruders in shear flows. Phenomenologically, we observe a cooling upon the introduction of an intruder into the system. This cooling effect increases with intruder size and explains the sinking of large intruders. On the other hand, the introduction of small to mid-sized intruders, i.e. up to 4 times the bed particle size, leads to a reduction in the granular pressure compared to the hydrostatic pressure, which in turn causes the rising of small to mid-sized intruders.
description: 13 pages
The I^G J^{PC}=1^- 1^{-+} Tetraquark States
Creators: name: Chen, Hua-Xing
name: Hosaka, Atsushi
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the tetraquark states with I^G J^{PC}=1^- 1^{-+} in the QCD sum rule. After exhausting all possible flavor structures, we analyses both the SVZ and finite energy sum rules. Both approaches lead to a mass around 1.6 GeV for the state with the quark contents q q q_bar q_bar, and around 2.0 GeV for the state with the quark contents q s q_bar s_bar. The flavor structure 3_bar * 6_bar + 6 * 3 is preferred. Our analysis strongly indicates that both pi1(1600) and pi1(2015) are also compatible with the exotic tetraquark interpretation, which are sometimes labeled as candidates of the 1^{-+} hybrid mesons. Moreover one of their dominant decay modes is a pair of axial-vector and pseudoscalar mesons such as b1(1235) pi, which is sometimes considered as the characteristic decay mode of the hybrid mesons.
description: 18 pages, 14 figures, revised version to appear in Phys. Rev. D
Additional file 1 of AIP, fatty liver, and HbA1c as modifiers of the C-index and diabetes risk relationship
Creators: name: Liu, Yanmei
name: Shi, Rui
name: Cao, Huiying
name: Zhang, Jian
name: Li, Shuangyue
name: Kang, Xilin
name: Ma, Yongjuan
name: Wu, Yudian
name: Guo, Yangfan
name: Feng, Lei
Publisher: name: figshare
Year: 2025
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Virology

description: Supplementary Material 1
The Powers of Deconfinement
Creators: name: Megias, E.
name: Arriola, E. Ruiz
name: Salcedo, L. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The trace anomaly of gluodynamics encodes the breakdown of classical scale invariance due to interactions around the deconfinement phase transition. While it is expected that at high temperatures perturbation theory becomes applicable we show that current lattice calculations are far from the perturbative regime and are dominated instead by inverse even power corrections in the temperature, while the total perturbative contribution is estimated to be extremely small and compatible with zero within error bars. We provide an interpretation in terms of dimension-two gluon condensate of the dimensionally reduced theory which value agrees with a similar analysis of power corrections from available lattice data for the renormalized Polyakov loop and the heavy quark-antiquark free energy in the deconfined phase of QCD.
description: To appear in the proceedings of 14th High-Energy Physics International Conference in Quantum Chromodynamics (QCD 08), Montpellier, France, 7-12 Jul 2008
title: Frontmatter, Table of Contents, Preface, Conference Organization
Creators: name: Jones, Andrew V.
name: Ng, Nicholas
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2013
Subjects: subject: Frontmatter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Frontmatter, Table of Contents, Preface, Conference Organization
description: OASIcs, Vol. 35, 2013 Imperial College Computing Student Workshop, pages i-xi
On the minima and convexity of Epstein Zeta function
Creators: name: Lim, S. C.
name: Teo, L. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 11E45, 26B15

description: Let $Z_n(s; a_1,..., a_n)$ be the Epstein zeta function defined as the meromorphic continuation of the function \sum_{k\in\Z^n\setminus\{0\}}(\sum_{i=1}^n [a_i k_i]^2)^{-s}, \text{Re} s>\frac{n}{2} to the complex plane. We show that for fixed $s\neq n/2$, the function $Z_n(s; a_1,..., a_n)$, as a function of $(a_1,..., a_n)\in (\R^+)^n$ with fixed $\prod_{i=1}^n a_i$, has a unique minimum at the point $a_1=...=a_n$. When $\sum_{i=1}^n c_i$ is fixed, the function $$(c_1,..., c_n)\mapsto Z_n(s; e^{c_1},..., e^{c_n})$$ can be shown to be a convex function of any $(n-1)$ of the variables $\{c_1,...,c_n\}$. These results are then applied to the study of the sign of $Z_n(s; a_1,..., a_n)$ when $s$ is in the critical range $(0, n/2)$. It is shown that when $1\leq n\leq 9$, $Z_n(s; a_1,..., a_n)$ as a function of $(a_1,..., a_n)\in (\R^+)^n$, can be both positive and negative for every $s\in (0,n/2)$. When $n\geq 10$, there are some open subsets $I_{n,+}$ of $s\in(0,n/2)$, where $Z_{n}(s; a_1,..., a_n)$ is positive for all $(a_1,..., a_n)\in(\R^+)^n$. By regarding $Z_n(s; a_1,..., a_n)$ as a function of $s$, we find that when $n\geq 10$, the generalized Riemann hypothesis is false for all $(a_1,...,a_n)$.
description: 27 pages
DivergentNets: Medical Image Segmentation by Network Ensemble
Creators: name: Thambawita, Vajira
name: Hicks, Steven A.
name: Halvorsen, Pål
name: Riegler, Michael A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Detection of colon polyps has become a trending topic in the intersecting fields of machine learning and gastrointestinal endoscopy. The focus has mainly been on per-frame classification. More recently, polyp segmentation has gained attention in the medical community. Segmentation has the advantage of being more accurate than per-frame classification or object detection as it can show the affected area in greater detail. For our contribution to the EndoCV 2021 segmentation challenge, we propose two separate approaches. First, a segmentation model named TriUNet composed of three separate UNet models. Second, we combine TriUNet with an ensemble of well-known segmentation models, namely UNet++, FPN, DeepLabv3, and DeepLabv3+, into a model called DivergentNets to produce more generalizable medical image segmentation masks. In addition, we propose a modified Dice loss that calculates loss only for a single class when performing multiclass segmentation, forcing the model to focus on what is most important. Overall, the proposed methods achieved the best average scores for each respective round in the challenge, with TriUNet being the winning model in Round I and DivergentNets being the winning model in Round II of the segmentation generalization challenge at EndoCV 2021. The implementation of our approach is made publicly available on GitHub.
description: the winning model of the segmentation generalization challenge at EndoCV 2021
Additional file 1 of Interleukin-21 engineering enhances CD19-specific CAR-NK cell activity against B-cell lymphoma via enriched metabolic pathways
Creators: name: He, Bailin
name: Chen, Hong
name: Wu, Jiaxu
name: Qiu, Shiqiu
name: Mai, Qiusui
name: Zeng, Qing
name: Wang, Cong
name: Deng, Shikai
name: Cai, Zihong
name: Liu, Xiaoli
name: Xuan, Li
name: Li, Chengyao
name: Zhou, Hongsheng
name: Liu, Qifa
name: Xu, Na
Publisher: name: figshare
Year: 2025
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Supplementary materials 1.
DriveLaB: An Experimental Platform for Telematics
Creators: name: Pedersen, Kasper F.
name: Torp, Kristian
Publisher: name: Zenodo
Year: 2021
Subjects: ITS, platform, smartphone GPS

description: Speed is a major killer in traffic. This paper presents
 the DriveLaB telematics platform that monitors drivers in real-
 time and provides feedback if they are speeding. The platform has
 been developed in collaboration with a major Danish insurance
 company and used in three larger field trials. The platform uses
 an Android/iOS smartphone app at the client side and does
 all data processing at the server-side, e.g., map-matching. The
 paper first provides an overview of the entire platform and then
 focuses on three major technical challenges: 1) A trip scoring
 algorithm that allows for comparison of scores across trip length.
 2) A notification system that provides both positive and negative
 real-time feedback to the drivers, without leading the drivers’
 attention away from traffic. 3) Auto start of the cross-platform
 app to make it convenient for drivers to participate in the field
 trials. Three field trials, with 32 participants driving 57,933 km
 has been conducted. The results of these trials validates that
 trip scores can be compared across trip length. Further, we
 demonstrate that doing all data-processing on the server side is a
 viable approach also for real-time notifications and that drivers
 are notified with reasonable delays. Finally, we show that the
 client auto start is fast, robust, and convenie
Particle-Number Restoration within the Energy Density Functional Formalism
Creators: name: Bender, M.
name: Duguet, T.
name: Lacroix, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We give a detailed analysis of the origin of spurious divergences and finite steps that have been recently identified in particle-number restoration calculations within the nuclear energy density functional framework. We isolate two distinct levels of spurious contributions to the energy. The first one is encoded in the definition of the basic energy density functional itself whereas the second one relates to the canonical procedure followed to extend the use of the energy density functional to multi-reference calculations. The first level of spuriosity relates to the long-known self-interaction problem and to the newly discussed self-pairing interaction process which might appear when describing paired systems with energy functional methods using auxiliary reference states of Bogoliubov or BCS type. A minimal correction to the second level of spuriosity to the multi-reference nuclear energy density functional proposed in [D. Lacroix, T. Duguet, M. Bender, arXiv:0809.2041] is shown to remove completely the anomalies encountered in particle-number restored calculations. In particular, it restores sum-rules over (positive) particle numbers that are to be fulfilled by the particle-number-restored formalism. The correction is found to be on the order of several hundreds of keVs up to about 1 MeV in realistic calculations, which is small compared to the total binding energy, but often accounts for a substantial percentage of the energy gain from particle-number restoration and is on the same energy scale as the excitations one addresses with multi-reference energy density functional methods.
description: 37 pages, 14 figures, accepted for publication in PRC
Effects of Spatial Discretization in Lyman-alpha Line Radiation Transfer Simulations
Creators: name: Camps, Peter
name: Behrens, Christoph
name: Baes, Maarten
name: Kapoor, Anand Utsav
name: Grand, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We describe the addition of Lyman-alpha resonant line transfer to our dust continuum radiation transfer code SKIRT, verifying our implementation with published results for spherical problems and using some self-designed three-dimensional setups. We specifically test spatial discretization through various grid types, including hierarchical octree grids and unstructured Voronoi tessellations. We then use a radiation transfer post-processing model for one of the spiral galaxies produced by the Auriga cosmological zoom simulations to investigate the effect of spatial discretization on the synthetic observations. We find that the calculated Lyman-alpha line profiles exhibit an extraordinarily strong dependence on the type and resolution of the spatial grid, rendering the results untrustworthy at best. We attribute this effect to the large gradients in the hydrogen density distribution over small distances, which remain significantly under-resolved in the input model. We therefore argue that further research is needed to determine the required spatial resolution of a hydrodynamical simulation snapshot to enable meaningful Lyman-alpha line transfer post-processing.
description: Accepted for publication in The Astrophysical Journal
title: Frontmatter, Table of Contents, Preface, Workshop Organization
Creators: name: Turau, Volker
name: Kwiatkowska, Marta
name: Mangharam, Rahul
name: Weyer, Christoph
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2014
Subjects: subject: Frontmatter
subject: Table of Contents
subject: Preface
subject: Workshop Organization

description: Frontmatter, Table of Contents, Preface, Workshop Organization
description: OASIcs, Vol. 36, 5th Workshop on Medical Cyber-Physical Systems, pages i-x
Security proof of differential phase shift quantum key distribution in the noiseless case
Creators: name: Zhao, Yi-Bo
name: Fung, Chi-Hang Fred
name: Han, Zheng-Fu
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Differential phase shift quantum key distribution systems have a high potential for achieving high speed key generation. However, its unconditional security proof is still missing, even though it has been proposed for many years. Here, we prove its security against collective attacks with a weak coherent light source in the noiseless case (i.e. no bit error). The only assumptions are that quantum theory is correct, the devices are perfect and trusted and the key size is infinite. Our proof works on threshold detectors. We compute the lower bound of the secret key generation rate using the information-theoretical security proof method. Our final result shows that the lower bound of the secret key generation rate per pulse is linearly proportional to the channel transmission probability if Bob's detection counts obey the binomial distribution.
description: Published version, 13 pages, 4 figures, minor changes, references added, acknowledgement added
Channel Estimation Based on Machine Learning Paradigm for Spatial Modulation OFDM
Creators: name: Badi, Ahmed M.
name: Elganimi, Taissir Y.
name: Alkishriwo, Osama A. S.
name: Adem, Nadia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In this paper, deep neural network (DNN) is integrated with spatial modulation-orthogonal frequency division multiplexing (SM-OFDM) technique for end-to-end data detection over Rayleigh fading channel. This proposed system directly demodulates the received symbols, leaving the channel estimation done only implicitly. Furthermore, an ensemble network is also proposed for this system. Simulation results show that the proposed DNN detection scheme has a significant advantage over classical methods when the pilot overhead and cyclic prefix (CP) are reduced, owing to its ability to learn and adjust to complicated channel conditions. Finally, the ensemble network is shown to improve the generalization of the proposed scheme, while also showing a slight improvement in its performance.
description: 4 pages, 5 figures, 2021 IEEE 1st International Maghreb Meeting of the Conference on Sciences and Techniques of Automatic Control and Computer Engineering MI-STA
Phase Diagram of the Attractive Hubbard Model with Inhomogeneous Interactions
Creators: name: Shenoy, Vijay B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The phase diagram of the attractive Hubbard model with spatially inhomogeneous interactions is obtained using a single site dynamical mean field theory like approach. The model is characterized by three parameters: the interaction strength, the active fraction (fraction of sites with the attractive interaction), and electron filling. The calculations indicate that in a parameter regime with intermediate values of interaction strength (compared to the bare bandwidth of the electrons), and intermediate values of the active fraction, "non-BCS" superconductivity is obtained. The results of this work are likely to be relevant to many systems with spatially inhomogeneous superconductivity such as strongly correlated oxides, systems with negative U centers, and, in future, cold atom optical lattices.
description: 9 pages, 7 figures, to appear in Physical Review B
Optimized Design of Silicon Heterojunction Solar Cells for Field Operating Conditions
Creators: name: Cattin, Jean
name: Dupré, Olivier
name: Aïssa, Brahim
name: Haschke, Jan
name: Ballif, Christophe
name: Boccard, Mathieu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Solar modules are currently characterized at standard test conditions (STC), defined at 1000W/m2 and 25 °C. However, solar modules in actual outdoor operating conditions typically operate at lower illumination and higher temperature than STC, which significantly affects their performance ratio (average harvesting efficiency over efficiency in STC). Silicon heterojunction (SHJ) technology displays both good temperature coefficient and good low-illumination performances, leading to outstanding performance ratios. We investigate here SHJ solar cells that use a-SiCx(n) layer as front doped layer with different carbon contents under different climates conditions. Adding carbon increases transparency but also resistive losses at room temperature (compared with carbon-free layers), leading to a significant decrease in efficiency at STC. We demonstrate that despite this difference at STC, the difference in energy harvesting efficiency is much smaller in all investigated climates. Furthermore, we show that a relative gain of 0.4 to 0.8 percent in harvesting efficiency is possible by adding a certain content of carbon in the front (n) layer, compared with carbon-free cells optimized for STC.
"GiGa": the Billion Galaxy HI Survey -- Tracing Galaxy Assembly from Reionization to the Present
Creators: name: Windhorst, R. A.
name: Cohen, S. H.
name: Hathi, N. P.
name: Jansen, R. A.
name: Ryan, R. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we review the Billion Galaxy Survey that will be carried out at radio--optical wavelengths to micro--nanoJansky levels with the telescopes of the next decades. These are the Low-Frequency Array, the Square Kilometer Array and the Large Synoptic Survey Telescope as survey telescopes, and the Thirty Meter class Telescopes for high spectral resolution+AO, and the James Webb Space Telescope (JWST) for high spatial resolution near--mid IR follow-up. With these facilities, we will be addressing fundamental questions like how galaxies assemble with super-massive black-holes inside from the epoch of First Light until the present, how these objects started and finished the reionization of the universe, and how the processes of star-formation, stellar evolution, and metal enrichment of the IGM proceeded over cosmic time. We also summarize the high-resolution science that has been done thus far on high redshift galaxies with the Hubble Space Telescope (HST). Faint galaxies have steadily decreasing sizes at fainter fluxes and higher redshifts, reflecting the hierarchical formation of galaxies over cosmic time. HST has imaged this process in great structural detail to z
description: 8 pages, LaTeX2e requires 'aip' style (included), 8 postscript figures. To appear in the proceedings of the `The Evolution of Galaxies through the Neutral Hydrogen Window' conference, Arecibo Observatory Feb 1-3, 2008; Eds. R. Minchin & E. Momjian, AIP Conf Proc
A mixed-frequency approach for exchange rates predictions
Creators: name: Mattera, Raffaele
name: Misuraca, Michelangelo
name: Scepi, Germana
name: Spano, Maria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: 62J05

description: Selecting an appropriate statistical model to forecast exchange rates is still today a relevant issue for policymakers and central bankers. The so-called Meese and Rogoff puzzle assesses that exchange rate fluctuations are unpredictable. In the literature, a lot of studies tried to solve the puzzle finding alternative predictors and statistical models based on temporal aggregation. In this paper, we propose an approach based on mixed frequency models to overcome the lack of information caused by temporal aggregation. We show the effectiveness of our approach in comparison with other proposed methods by performing CAD/USD exchange rate predictions.
Reconstructing SUSY and R-Neutrino Masses in SO(10)
Creators: name: Deppisch, F.
name: Freitas, A.
name: Porod, W.
name: Zerwas, P. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We report on the extrapolation of scalar mass parameters in the lepton sector to reconstruct SO(10) scenarios close to the unification scale. The method is demonstrated for an example in which SO(10) is broken directly to the Standard Model, based on the expected precision from coherent LHC and ILC collider analyses. In addition to the fundamental scalar mass parameters at the unification scale, the mass of the heaviest right-handed neutrino can be estimated in the seesaw scenario.
description: Submitted for the SUSY08 proceedings, 3 pages, LaTeX, 2 eps figures
Differential rotation in giant planets maintained by density-stratified turbulent convection
Creators: name: Glatzmaier, Gary A.
name: Evonuk, Martha
name: Rogers, Tamara M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The zonal winds on the surfaces of giant planets vary with latitude. Jupiter and Saturn, for example, have several bands of alternating eastward (prograde) and westward (retrograde) jets relative to the angular velocity of their global magnetic fields. These surface wind profiles are likely manifestations of the variations in depth and latitude of angular velocity deep within the liquid interiors of these planets. Two decades ago it was proposed that this differential rotation could be maintained by vortex stretching of convective fluid columns that span the interiors of these planets from the northern hemisphere surface to the southern hemisphere surface. This now classic mechanism explains the differential rotation seen in laboratory experiments and in computer simulations of, at best, weakly turbulent convection in rotating constant-density fluid spheres. However, these experiments and simulations are poor approximations for the density-stratified strongly-turbulent interiors of giant planets. The long thin global convective columns predicted by the classic geostrophic theory for these planets would likely not develop. Here we propose a much more robust mechanism for maintaining differential rotation in radius based on the local generation of vorticity as rising plumes expand and sinking plumes contract. Our high-resolution two-dimensional computer simulations demonstrate how this mechanism could maintain either prograde or retrograde surface winds in the equatorial region of a giant planet depending on how the density scale height varies with depth.
description: Geophysical and Astrophysical Fluid Dynamics, in press
Influence of local surface defects on the minority-carrier lifetime of passivating-contact solar cells
Creators: name: Cattin, Jean
name: Haschke, Jan
name: Ballif, Christophe
name: Boccard, Matthieu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Unlocking the full potential of passivating contacts, increasingly popular in the silicon solar cell industry, requires determining the minority carrier lifetime. Minor passivation drops limit the functioning of solar cells, however, they are not detected in devices with open-circuit voltages below 700 mV. In this work, simulations and experiments were used to show the effect of localized surface defects on the overall device performance. Although the defects did not significantly affect lifetime measurements prior to electrode deposition or open-circuit voltage measurements at standard-test conditions, it had a significant impact on the point of operation and, in turn, device efficiency (up to several percent efficiency drop). Furthermore, this study demonstrates that localized defects can have a detrimental effect on well-passivated areas located several centimeters away through electrical connection by the electrode. This leads to a low-injection lifetime drop after electrode deposition. Thus, commonly measured lifetime curves before metallization (and therefore internal voltage) are usually not representative of their respective values after metallization. The low-injection lifetime drop often observed after electrode deposition can derive from such local surface defects, and not from a homogeneous passivation drop.
DATA POLICY AND CHALLENGES FOR MARINE ROBOTICS
Creators: name: Ferretti, Roberta
name: Aracri, Simona
Publisher: name: Zenodo
Year: 2022

description: The lecture focuses on the meaning of self-describing data, i.e. minimum metadata required. It describes the difficulties that arise analysing non-standardised data and it highlights the best practices to be used to create a seamless data treatment approach, from acquisition to interpretation. Whilst in marine sciences data policies are relatively defined, in marine robotics this is an unexplored ground. The purpose of the lecture is to stimulate a discussion and to lay out a common path to define a set of metadata and shared vocabulary for the data gathered by novel robotic platforms.
Stability of higher dimensional Reissner-Nordstrom-anti-de Sitter black holes
Creators: name: Konoplya, R. A.
name: Zhidenko, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate stability of the D-dimensional Reissner-Nordstrom-anti-de-Sitter metrics as solutions of the Einstein-Maxwell equations. We have shown that asymptotically anti-de Sitter black holes are dynamically stable for all values of charge and anti-de Sitter radius in $D=5,6...11$ dimensional space-times. This does not contradict to dynamical instability of RN-AdS black holes found by Gubser in $\mathcal{N}=8$ gauged supergravity, because the latter instability comes from the tachyon mode of the scalar field, coupled to the system. Asymptotically AdS black holes are known to be thermodynamically unstable for some region of parameters, yet, as we have shown here, they are stable against gravitational perturbations.
description: 9 pages, 2 tables, a lot of figures, RevTex
Peluang dan Tantangan Jurnal BIPA
Creators: name: Mulyaningsih, Indrya
Publisher: name: Zenodo
Year: 2021
Subjects: Pendidikan Bahasa Indonesia
BIPA
artikel ilmiah
publikasi ilmiah

description: Disampaikan pada Lokakarya Penghimpunan Bahan Jurnal Bahasa Indonesia bagi Penutur Asing (BIPA) yang diselenggarakan oleh Pusat Pengembangan dan Pelindungan Bahasa dan Sastra, Senin s.d. Selasa, 22 s.d. 23 November 2021.
Got S(e)oul?: The Cultural Implications of Performing Blackness in K-pop on South Korean Youthin K-pop on South Korean Youth
Creators: name: Williams, Alissa
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: Culture
Black Studies
Cross-cultural
Comparative

description: My thesis examines the appropriation of Black culture into Korean Popular music, or K-pop, as a) a tool that is used to authenticate the performances of K-pop idols, and b) an aspect of the industry that perpetuates negative stereotypes about Black people and exacerbates the discrimination and racism that occurs in South Korean society. Drawing on literature from sociology, performance studies, gender studies, cultural studies, media studies, Black studies, and Asian Studies, I offer insight into the formation of the K-pop industry, the fundamentals of its current state, and the roles that Black music and performance play in both. I also analyze trends in the consumption of Black music within the South Korean music market between the years 1959 and 1992 using chart archives from the South Korean music platform Melon. In particular, I highlight the consistent affinity that South Korean consumers demonstrated for Black artists under the Motown record label, which I assert had significant implications for its company model being utilized as a blueprint for the infrastructure of the K-pop industry. Furthermore, I dissect the visual components of three K-pop music videos to highlight patterns in the usage of Black cultural elements only within the context of certain themes or topics that sustain overgeneralized negative perceptions of hip hop culture. However, despite these criticisms, my thesis ultimately argues that with our society’s increasing interconnectedness through the use of interactive digital platforms such as social media which make limitations in the spread of information across cultures due to geographical barriers obsolete, the K-pop industry can come to be leveraged as a tool that can shift the conversations being had on race among South Korean youth youth.
Elephants or Goldfish? An Empirical Analysis of Carrier Reciprocity in Dynamic Freight Markets
Creators: name: Acocella, Angela
name: Caplice, Chris
name: Sheffi, Yossi
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Finance (q-fin.GN)
subject: FOS: Economics and business

description: Dynamic macroeconomic conditions and non-binding truckload freight contracts enable both shippers and carriers to behave opportunistically. We present an empirical analysis of carrier reciprocity in the US truckload transportation sector to demonstrate whether consistent performance and fair pricing by shippers when markets are in their favor result in maintained primary carrier tender acceptance when markets turn. The results suggest carriers have short memories; they do not remember shippers' previous period pricing, tendering behavior, or performance when making freight acceptance decisions. However, carriers appear to be myopic and respond to shippers' current market period behaviors, ostensibly without regard to shippers' previous behaviors.
Worldsheet theories for non-geometric string backgrounds
Creators: name: Dall'Agata, Gianguido
name: Prezas, Nikolaos
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that twisted doubled tori can be used to construct a general class of worldsheet models describing non-geometric string backgrounds. By employing a first order formulation of interacting chiral bosons, we first refine the analysis on the general conditions of worldsheet Lorentz invariance and then prove that twisted doubled tori provide good duality symmetric backgrounds. Subsequently we apply our general analysis to several examples which enable us to gain new insight on the difference between geometric, locally geometric and genuine non-geometric backgrounds.
description: Latex, 25 pages; v2 Fixed typos; v3 Sections 2 and 3 expanded; v4 Published version