cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Does Python Smell Like Java? Tool Support for Design Defect Discovery in Python
Creators: name: Vavrová, Nicole
name: Zaytsev, Vadim
Publisher: name: arXiv
Year: 2017
Subjects: subject: Software Engineering (cs.SE)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: The context of this work is specification, detection and ultimately removal of detectable harmful patterns in source code that are associated with defects in design and implementation of software. In particular, we investigate five code smells and four antipatterns previously defined in papers and books. Our inquiry is about detecting those in source code written in Python programming language, which is substantially different from all prior research, most of which concerns Java or C-like languages. Our approach was that of software engineers: we have processed existing research literature on the topic, extracted both the abstract definitions of nine design defects and their concrete implementation specifications, implemented them all in a tool we have programmed and let it loose on a huge test set obtained from open source code from thousands of GitHub projects. When it comes to knowledge, we have found that more than twice as many methods in Python can be considered too long (statistically extremely longer than their neighbours within the same project) than in Java, but long parameter lists are seven times less likely to be found in Python code than in Java code. We have also found that Functional Decomposition, the way it was defined for Java, is not found in the Python code at all, and Spaghetti Code and God Classes are extremely rare there as well. The grounding and the confidence in these results comes from the fact that we have performed our experiments on 32'058'823 lines of Python code, which is by far the largest test set for a freely available Python parser. We have also designed the experiment in such a way that it aligned with prior research on design defect detection in Java in order to ease the comparison if we treat our own actions as a replication. Thus, the importance of the work is both in the unique open Python grammar of highest quality, tested on millions of lines of code, and in the design defect detection tool which works on something else than Java.
Decoherence and turbulence sources in a long laser
Creators: name: Roche, Amy
name: Slepneva, Svetlana
name: Kovalev, Anton
name: Pimenov, Alexander
name: Vladimirov, Andrei G.
name: Marconi, Mathias
name: Giudici, Massimo
name: Huyet, Guillaume
Publisher: name: Weierstrass Institute
Year: 2022
Subjects: subject: SOA-fiber laser
subject: optical turbulence
subject: localized structures
subject: laser turn-on
subject: delay differential equation
subject: model
subject: cavity solitons
subject: 78A60
subject: 37N20
subject: 78M35

description: We investigate the turn-on process in a laser cavity where the roundtrip time is several orders of magnitude greater than the active medium timescales. In this long delay limit the electromagnetic field build-up can be mapped experimentally roundtrip after roundtrip. We show how coherence settles down starting from a stochastic initial condition. In the early stages of the turn-on, we show that power drop-outs emerge, persist for several round-trips and seed dark solitons. These latter structures exhibit a chaotic dynamics and emit radiation that can lead to an overall turbulent dynamics depending on the cavity dispersion.
title: 3. Erfurter Tagung : Schnellwachsende Baumarten – Status Quo und neue Entwicklungen: vom 16.11. – 17.11.2023
Creators: name: Landgraf, Dirk
name: Fachhochschule Erfurt, Fakultät
Publisher: name: Fachhochschule Erfurt
Year: 2024
Subjects: subject: 630
subject: 333.7

description: Tagungsband: schnellwachsende Baumarten, vol. 2023, no. 3
20 Years of Digital Medievalist – A Reflection on the Development of a Community
Creators: name: Bleier, Roman
name: Borek, Luise
name: Campagnolo, Alberto
name: Fischer, Franz
name: Gengnagel, Tessa
name: Hodel, Tobias
Publisher: name: Zenodo
Year: 2023
Subjects: Paper
Poster
Scholarly Community
Medieval Studies
Outreach
Community Building
digital ecologies and digital communities creation management and analysis
digital research infrastructures development and analysis
public humanities collaborations and methods
Cultural studies
History
Literary studies

description: Initially, Digital Medievalist was understood to be a group of supportive scholars, that wanted to test digital methods for their research projects. Since then, it has developed into a scholarly community with 1500 members and has become an integral part of the field nowadays called Digital Humanities.
Phase Slips in Superconducting Weak Links
Creators: name: Kimmel, Gregory
name: Glatz, Andreas
name: Aranson, Igor S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Superconducting vortices and phase slips are primary mechanisms of dissipation in superconducting, superfluid, and cold atom systems. While the dynamics of vortices is fairly well described, phase slips occurring in quasi-one dimensional superconducting wires still elude understanding. The main reason is that phase slips are strongly non-linear time-dependent phenomena that cannot be cast in terms of small perturbations of the superconducting state. Here we study phase slips occurring in superconducting weak links. Thanks to partial suppression of superconductivity in weak links, we employ a weakly nonlinear approximation for dynamic phase slips. This approximation is not valid for homogeneous superconducting wires and slabs. Using the numerical solution of the time-dependent Ginzburg-Landau equation and bifurcation analysis of stationary solutions, we show that the onset of phase slips occurs via an infinite period bifurcation, which is manifested in a specific voltage-current dependence. Our analytical results are in good agreement with simulations.
description: 13 pages, 11 figures
Redundant and Physical Black Hole Parameters: Is there an independent physical dilaton charge?
Creators: name: Hajian, K.
name: Sheikh-Jabbari, M. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Black holes as solutions to gravity theories, are generically identified by a set of parameters. Some of these parameters are associated with black hole physical conserved charges, like ADM charges. There can also be some "redundant parameters." We propose necessary conditions for a parameter to be physical. The conditions are essentially integrability and non-triviality of the charge variations arising from "parametric variations," variation of the solution with respect to the chosen parameters. In addition, we prove that variation of the redundant parameters which do not meet our criteria do not appear in the first law of thermodynamics. As an interesting application, we show that dilaton moduli are redundant parameters for black hole solutions to Einstein-Maxwell-(Axion)-Dilaton theories, because variations in dilaton moduli would render entropy, mass, electric charges or angular momenta non-integrable. Our results are in contrast with modification of the first law due to scalar charges suggested in Gibbons-Kallosh-Kol paper arXiv:hep-th/9607108 and its follow-ups. We also briefly discuss implications of our results for the attractor behavior of extremal black holes.
description: 8 pages, published version, supplementary Mathematica code is available in https://drive.google.com/file/d/0B8AqjYFfBKw0ZUc3OFVDT3lVdUE/view?usp=sharing
Static spin susceptibility in magnetically ordered states
Creators: name: Kuboki, Kazuhiro
name: Yamase, Hiroyuki
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report that special care is needed when longitudinal magnetic susceptibility is computed in a magnetically ordered phase, especially in metals. We demonstrate this by studying static susceptibility in both a ferromagnetic and an antiferromagnetic state in the random phase approximation to the two-dimensional Hubbard model on a square lattice. In contrast to the case in the disordered phase, a first derivative of the chemical potential (or the density) with respect to a magnetic field does not vanish in a magnetically ordered phase when the field is applied parallel to the magnetic moment. This effect is crucial and should be included when computing magnetic susceptibility in the ordered phase, otherwise an unphysical result would be obtained. In addition, consequently the magnetic susceptibility becomes different when computed at a fixed density and a fixed chemical potential in the ordered phase. In particular, we cannot employ magnetic susceptibility at a fixed chemical potential to describe a system with a fixed density even if the chemical potential is tuned to reproduce the correct density.
description: 19 pages, 8 figures
Arithmetic of commutative semigroups with a focus on semigroups of ideals and modules
Creators: name: Fan, Yushuang
name: Geroldinger, Alfred
name: Kainrath, Florian
name: Tringali, Salvatore
Publisher: name: arXiv
Year: 2016
Subjects: subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 11P70, 13A05, 13F05, 16D70, 20M12, 20M13

description: Let $H$ be a commutative semigroup with unit element such that every non-unit can be written as a finite product of irreducible elements (atoms). For every $k \in \mathbb N$, let $\mathscr U_k (H)$ denote the set of all $\ell \in \mathbb N$ with the property that there are atoms $u_1, \ldots, u_k, v_1, \ldots, v_{\ell}$ such that $u_1 \cdot \ldots \cdot u_k = v_1 \cdot \ldots \cdot v_{\ell}$ (thus, $\mathscr U_k (H)$ is the union of all sets of lengths containing $k$). The Structure Theorem for Unions states that, for all sufficiently large $k$, the sets $\mathscr U_k (H)$ are almost arithmetical progressions with the same difference and global bound. We present a new approach to this result in the framework of arithmetic combinatorics, by deriving, for suitably defined families of subsets of the non-negative integers, a characterization of when the Structure Theorem holds. This abstract approach allows us to verify, for the first time, the Structure Theorem for a variety of possibly non-cancellative semigroups, including semigroups of (not necessarily invertible) ideals and semigroups of modules. Furthermore, we provide the very first example of a semigroup (actually, a locally tame Krull monoid) that does not satisfy the Structure Theorem.
description: 34 pages, no figures; fixed minor details and made editorial changes; to appear in Journal of Algebra and its Applications
History as a visual concept: editing Peter of Poitiers' "Compendium historiae in genealogia Christi"
Creators: name: Bleier, Roman
name: Cleaver, Laura
name: Fischer, Franz
name: Sahle, Patrick
name: Worm, Andrea
name: Krottmaier, Sina
name: Macchiarelli, Agnese
name: Cugliana, Elisa
name: Goerss, Eleanor
name: Streicher, Maria
name: Rouxel, Lennart
Publisher: name: Zenodo
Year: 2023
Subjects: Paper
Poster
medieval
manuscript
digital edition
semantic web
visualisation of knowledge
data modeling
manuscripts description
representation
and analysis
scholarly editing and editions development
analysis
and methods
Art history
History

description: The poster will report on a new edition of Peter of Poitiers' "Compendium historiae". The highly visual chracter of the work makes editing a challenging task and the project team will report on preliminary work during the first year and present an outlook on future work and the project goals.
SPORTCHILARNING KUN TARTIBIDAGI OVQATLANISH RATSIONI
Creators: name: Shavkatov, Shohjahon
Publisher: name: Zenodo
Year: 2024

description: Maqolada sportchilarning to‘g‘ri ovqatlanish tizimini yo‘lga qo‘yish, O‘zbekiston Milliy Olimpiya qo‘mitsi yordamida va sport shifokorlari assotsatsiyasi bilan hamkorlikda sport turlarini hisobga olgan holda sportchilarning ovqatlanish tizimini to‘g‘ri yo‘lga qo‘yish haqida fikir bildirilgan.
Revisiting the factorization theorem for $ργ^{*} \to π(ρ)$ at twist 3
Creators: name: Cheng, Shan
name: Zhang, Ya-lan
name: Hua, Jun
name: Li, Hsiang-nan
name: Xiao, Zhen-jun
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit the proof of the perturbative QCD factorization for the exclusive processes $ργ^{\star} \to π(ρ)$ at the two-parton twist-3 level. It is pointed out that the residual collinear divergences observed in the literature, which break the factorization of the above processes at the considered accuracy, are attributed to the improper insertion of the Fierz identity for factorizing the fermion flow. We show that the factorization theorem indeed holds at the two-parton twist-3 level after the mishandling is corrected.
description: 7 pages, 2 figures, Accepted for publication in Physical Review D
Cuban digital collections: an approach for collaboration and innovation.
Creators: name: Terrón Quintero, Grisel
name: Guerra Figueredo, Eritk
name: Solernou Ferrer, Alaina
name: Echarri Ramirez, Bryan
Publisher: name: Zenodo
Year: 2023
Subjects: Paper
Poster
cultural heritage
digital collection
museum
library
archive
digital publishing projects
systems
and methods
digitization (2D & 3D)
public humanities collaborations and methods
systems and information architecture and usability
Cultural studies
History
Informatics

description: OHCH is developing a digital transformation plan based on smart-city concepts. The digital collections management system is presented, a virtual space where digital objects are shared to give universal and collaborative access to Cuban cultural wealth. Innovation and collaboration have been the keys for the development of digital collections.
Instability of the non-Fermi liquid state of the Sachdev-Ye-Kitaev Model
Creators: name: Bi, Zhen
name: Jian, Chao-Ming
name: You, Yi-Zhuang
name: Pawlak, Kelly Ann
name: Xu, Cenke
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a series of perturbations on the Sachdev-Ye-Kitaev (SYK) model. We show that the chaotic non-Fermi liquid phase described by the ordinary $q = 4$ SYK model has marginally relevant/irrelevant (depending on the sign of the coupling constants) four-fermion perturbations allowed by symmetry. Changing the sign of one of these four-fermion perturbations leads to a continuous chaotic-nonchaotic quantum phase transition of the system accompanied by a spontaneous time-reversal symmetry breaking. Starting with the SYK$_q$ model with a $q-$fermion interaction, similar perturbations can lead to a series of new interacting conformal field theory fixed points.
description: 11 pages, 8 figures
Three Is the Charm: A New Architecture, New Features and New Projects in EVT 3
Creators: name: Bioglio, Livio
name: Cerretini, Giacomo
name: D'Agostino, Giulia
name: Magnanti, Elisabetta
name: Rosselli Del Turco, Roberto
Publisher: name: Zenodo
Year: 2023
Subjects: Paper
Poster
EVT
interface design
digital scholarly editions
data modeling
information retrieval
Interface design
development
and analysis
scholarly editing and editions development
analysis
and methods
software development
systems
analysis and methods
text encoding and markup language creation
deployment
Computer science
Philology

description: In this poster we would like to present the new architecture and features of EVT 3 (Edition Visualization Technology), an open source Angular-based tool for the visualization of TEI-XML Digital Scholarly Editions. We will use and showcase two digital philology projects as test bed for the new functionalities.
MPEC 2023-F105 : 2019 AN122
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2019 AN122

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Majorana fermions in topological insulator nanowires: from single superconducting nanowires to Josephson junctions
Creators: name: Huang, Guang-Yao
name: Xu, H. Q.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Signatures of Majorana fermion bound states in one-dimensional topological insulator (TI) nanowires with proximity effect induced superconductivity are studied. The phase diagram and energy spectra are calculated for single TI nanowires and it is shown that the nanowires can be in the topological invariant phases of winding numbers $W=0, \pm 1$, and $\pm 2$ corresponding to the cases with zero, one and two pairs of Majorana fermions in the single TI nanowires. It is also shown that the topological winding numbers, i.e., the numbers of pairs of Majorana fermions in the TI nanowires can be extracted from the transport measurements of a Josephson junction device made from two TI nanowires, while the sign in the winding numbers can be extracted using a superconducting quantum interference device (SQUID) setup.
description: 7 pages, 6 figures
DIE STRUKTURELLE ANALYSE VON PARTIKELVERBEN
Creators: name: Mamadjanova, Kamola
Publisher: name: Zenodo
Year: 2024

description: This article discusses the points of view of various linguists on the problem of determining the morphological status of prefix verbs in the context of “preverb + verb” combinations. Particular attention is paid to the position of A. Lüdeling, which is based on a structural analysis of the problem under consideration.
Double resonance of Raman transitions in a degenerate Fermi gas
Creators: name: Lee, Moosong
name: Han, Jeong Ho
name: Kang, Jin Hyoun
name: Kim, Min-Seok
name: Shin, Yong-il
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We measure momentum-resolved Raman spectra of a spin-polarized degenerate Fermi gas of $^{173}$Yb atoms for a wide range of magnetic fields, where the atoms are irradiated by a pair of counterpropagating Raman laser beams as in the conventional spin-orbit coupling scheme. Double resonance of first- and second-order Raman transitions occurs at a certain magnetic field and the spectrum exhibits a doublet splitting for high laser intensities. The measured spectral splitting is quantitatively accounted for by the Autler-Townes effect. We show that our measurement results are consistent with the spinful band structure of a Fermi gas in the spatially oscillating effective magnetic field generated by the Raman laser fields.
description: 7 pages, 6 figures
A Joint Quantile and Expected Shortfall Regression Framework
Creators: name: Dimitriadis, Timo
name: Bayer, Sebastian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistics Theory (math.ST)
subject: Risk Management (q-fin.RM)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Mathematics
subject: FOS: Economics and business

description: We introduce a novel regression framework which simultaneously models the quantile and the Expected Shortfall (ES) of a response variable given a set of covariates. This regression is based on a strictly consistent loss function for the pair quantile and ES, which allows for M- and Z-estimation of the joint regression parameters. We show consistency and asymptotic normality for both estimators under weak regularity conditions. The underlying loss function depends on two specification functions, whose choice affects the properties of the resulting estimators. We find that the Z-estimator is numerically unstable and thus, we rely on M-estimation of the model parameters. Extensive simulations verify the asymptotic properties and analyze the small sample behavior of the M-estimator for different specification functions. This joint regression framework allows for various applications including estimating, forecasting, and backtesting ES, which is particularly relevant in light of the recent introduction of ES into the Basel Accords.
description: 31 pages, 3 figures
de Sitter spacetime with a Becchi-Rouet-Stora quartet
Creators: name: Saitou, Rio
name: Gong, Yungui
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We generalize the topological model recently proposed and investigate the cosmological perturbations of the model. The model has an exact de Sitter background solution associated with a Becchi-Rouet-Stora(BRS) quartet terms which are regarded as a Lagrangian density of the topological field theory. The de Sitter solution can be selected without spontaneously breaking the BRS symmetry, and be interpreted as a gauge fixing of de Sitter spacetime. The BRS symmetry is preserved for the perturbations around the de Sitter background before we solve the constraints of general relativity. We derive action to the second order of the perturbations and confirm that even after solving the constraints, we have the BRS symmetry at least for the second order action. We construct the cosmological perturbation theory involving the BRS sector, and obtain the two point correlation functions for the curvature perturbation and the isocurvature perturbations which compose the BRS sector. Our result gives a new description for de Sitter spacetime and the quantum field theory in de Sitter spacetime.
description: 19 pages, the version to appear in Int.J.Mod.Phys.D
I-Analyzer: a flexible interface for full-text search, filtering and visualization
Creators: name: Janssen, Berit
name: Stiphout, Mees
name: van der Plas, Luka
Publisher: name: Zenodo
Year: 2023
Subjects: subject: Paper
subject: Poster
subject: distant reading
subject: indexing
subject: full-text search
subject: visualization
subject: corpus studies
subject: concordancing and indexing
subject: software development
subject: systems
subject: analysis and methods
subject: text mining and analysis
subject: History
subject: Humanities computing
subject: Political science
subject: FOS: Political science
subject: Translation studies

description: I-Analyzer allows to search, filter and visualize text data from various humanities disciplines. We describe the functionality of the tool, how it can be extended, and its use in research to this point.
title: Évaluer dans une perspective inclusive : mais est-ce si simple d’impliquer les élèves ? étude de cas d’une recherche collaborative sur l’enseignement de l’anglais au primaire
Creators: name: Morales Villabona, Fernando
name: Lepareur, Céline
name: Ducrey Monnier, Mylène
Publisher: name: La Revue LEeE
Year: 2024
Subjects: évaluation-soutien d'apprentissage
implication de l'élève dans l'évaluation
inclusion en éducation
recherche collaborative

description: L’approche de l’Évaluation-soutien d’Apprentissage favorise la motivation et l’engagement des élèves et participe au développement de leur capacité d’autorégulation. En cela, elle constitue un outil pédagogique précieux dans la perspective de l’inclusion scolaire puisqu’elle contribue au désir d’apprendre et a pour but de promouvoir les apprentissages des élèves. Dans cette conception, l’évaluation s’intègre à la planification même de l’enseignement, y compris pour permettre aux élèves de comprendre les objectifs poursuivis ainsi que les critères qui serviront à évaluer leurs productions. C’est sur cette base que les élèves pourront participer à l’évaluation de leur travail et recevoir des rétroactions utiles pour progresser. L’article présente une recherche collaborative, impliquant six enseignantes généralistes au degré primaire, pour concevoir une démarche et des outils d’évaluation des premiers apprentissages de l’anglais à l’école primaire. À partir d’un ensemble de données empiriques récoltées lors d’une formation continue combinée à la mise en place d’expérimentations dans six classes de 7ème année primaire (élèves de 10 à 11 ans), nos résultats permettent de rendre compte de l’usage effectif des outils d’évaluation, avec leurs bénéfices et limites. Les analyses montrent, entre autres, une variété de pratiques pouvant être plus ou moins favorables au soutien des apprentissages. Des leviers et des obstacles à la participation des élèves dans le processus d’évaluation sont mis en évidence. Enfin, en posant un regard critique sur le dispositif de recherche collaborative, nous interrogeons les conditions nécessaires à une transformation des pratiques d’évaluation, pouvant favoriser un accès plus égalitaire aux apprentissages, dans une visée d’école inclusive.
Optical phonon dynamics and electronic fluctuations in the Dirac semimetal Cd3As2
Creators: name: Sharafeev, A.
name: Gnezdilov, V.
name: Sankar, R.
name: Chou, F. C.
name: Lemmens, P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Raman scattering in the three-dimensional Dirac semimetal Cd3As2 shows an intricate interplay of electronic and phonon degrees of freedom. We observe resonant phonon scattering due to interband transitions, an anomalous anharmonicity of phonon frequency and intensity, as well as quasielastic (E~0) electronic scattering. The latter two effects are governed by a characteristic temperature scale T* ~ 100 K that is related to mutual fluctuations of lattice and electronic degrees of freedom. A refined analysis shows that this characteristic temperature corresponds to the energy of optical phonons which couple to interband transitions in the Dirac states of Cd3As2. As electron-phonon coupling in a topological semimetal is primarily related to phonons with finite momenta, the back action on the optical phonons in only observed as anharmonicities via multi-phonon processes involving a broad range of momenta. The resulting energy density fluctuations of the coupled system have previously only been observed in low dimensional or frustrated spin systems with suppressed long range ordering.
description: 9 pages
Low frequency Raman study of the Boson peak in a Tellurite-tungstate glass over temperature
Creators: name: Belançon, Marcos Paulo
name: Simon, Guilhem
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work we present our findings performing low frequency Raman measurements over temperature in a tellurite-tungstate glass sample. The spectra could be fitted by using only two log-Gaussians, which suggests that quasi-elastic light scattering is negligible. The positions of the peaks have the same temperature behavior, being the higher frequency one refered as Boson Peak in literature. The similar temperature behavior and depolarization ratio indicates that the peaks may have the same origin, being linked to the tranversal and longitudinal vibrations of some unit.
Twisted Lorentzian manifolds, a characterization with torse-forming time-like unit vectors
Creators: name: Mantica, Carlo Alberto
name: Molinari, Luca Guido
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 83C20, 53B30

description: Robertson-Walker and Generalized Robertson-Walker spacetimes may be characterized by the existence of a time-like unit torse-forming vector field, with other constrains. We show that Twisted manifolds may still be characterized by the existence of such (unique) vector field, with no other constrain. Twisted manifolds generalize RW and GRW spacetimes by admitting a scale function that depends both on time and space. We obtain the Ricci tensor, corresponding to the stress-energy tensor of an imperfect fluid.
description: 6 pages, marginal errors corrected, reference updated
Nucleon resonances $N(1875)$ and $N(2100)$ as strange partners of LHCb pentaquarks
Creators: name: He, Jun
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work, we investigate the possibility of interpreting two nucleon resonances, the $N(1875)$ and the $N(2100)$, as hadronic molecular states from the $Σ^*K$ and $ΣK^*$ interactions, respectively. With the help of effective Lagrangians in which coupling constants are determined by the SU(3) symmetry, the $Σ^*K$ and $ΣK^*$ interactions are described by the vector-meson and pseudoscalar-meson exchanges. With the one-boson-exchange potential obtained, bound states from the $Σ^*K$ and $ΣK^*$ interactions are searched for in a quasipotential Bethe-Saltpeter equation approach. A bound state with quantum number $I(J^P)=1/2(3/2^-)$ is produced from the $Σ^*K$ interaction, which can be identified as the $N(1875)$ listed in PDG. It can be seen as a strange partner of the LHCb pentaquark $P_c(4380)$ with the same quantum numbers in the molecular state picture. The $ΣK^*$ interaction also produces a bound state with quantum number $I(J^P)=1/2(3/2^-)$, which is related to experimentally observed $N(2100)$ in the $ϕ$ photoproduction. Our results suggest that the $N(2120)$ observed in the $KΛ(1520)$ photoproduction and the $N(2100)$ observed in the $ϕ$ photoproduction have different origins. The former is a conventional three-quark state while the latter is a $ΣK^*$ molecular state, which can be seen as a strange partner of the $P_c(4450)$ with different spin parity.
description: 8 pages, 1 figures. Published version
CIII] Emission in Star-forming Galaxies at z ~ 1
Creators: name: Du, Xinnan
name: Shapley, Alice E.
name: Martin, Crystal L.
name: Coil, Alison L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The CIII]λλ1907, 1909 rest-frame UV emission doublet has recently been detected in galaxies during the epoch of reionization (z > 6), with high equivalent width (>10 Å, rest frame). Currently, it is possible to obtain much more detailed information for star-forming galaxies at significantly lower redshift. Accordingly, studies of their far-UV spectra are useful for understanding the factors modulating the strength of CIII] emission. We present the first statistical sample of CIII] emission measurements in star-forming galaxies at z ~ 1. Our sample is drawn from the DEEP2 survey and spans the redshift 0.64 < z < 1.35 ( = 1.08). We find that the median equivalent width (EW) of individual CIII] detections in our sample (1.30 Å) is much smaller than the typical value observed thus far at z > 6. Furthermore, out of 184 galaxies with coverage of CIII], only 40 have significant detections. Galaxies with individual CIII] detections have bluer colors and lower luminosities on average than those without, implying that strong CIII] emitters are in general young and low-mass galaxies without significant dust extinction. Using stacked spectra, we further investigate how CIII] strength correlates with multiple galaxy properties (M_B, U-B, M*, star-formation rate, specific star-formation rate) and rest-frame near-UV (FeII* and MgII) and optical [OIII] and Hβ) emission line strengths. These results provide a detailed picture of the physical environment in star-forming galaxies at z ~ 1, and motivate future observations of strong CIII] emitters at similar redshifts.
description: 14 pages, 7 figures, ApJ, accepted
VALUABLE Enzymatically produced chitin
Creators: name: Eijsink, Vincent
Publisher: name: Zenodo
Year: 2023

description: The hydrolysis of fungal biomass to produce a hydrolysate rich in non-chitin sugars, peptides and amino acids (Deliverable 2.1) and a chitin-rich, insoluble fraction has been optimized and the content, purity and the applicability of the chitin in the chitin-rich fractions obtained in optimized processes have been assessed. Using the optimized processes, about 131 g of chitin with a purity well above 90 % can be produced from one kilo of dry fungal biomass. Preliminary tests show that this chitin is suitable for the further valorisation steps that are envisaged in the project.
Where do they go? 10 years of professional choices by Digital Humanities Masters graduates (and what we might learn from them)
Creators: name: Edmond, Jennifer
Publisher: name: Zenodo
Year: 2023
Subjects: Paper
Poster
curriculum design
career pathways
graduate destinations
curricular and pedagogical development and analysis
meta-criticism (reflections on digital humanities and humanities computing)
Humanities computing

description: This poster will present the results of a 10-year study into the post-degree professional pathways of the graduates of Trinity College Dublin's MPhil programme in Digital Humanities and Culture. It will also look at curricular changes made because of, and wider questions about DH raised by, these findings.
Ultra Compact Stars: Reconstructing the Perturbation Potential
Creators: name: Völkel, Sebastian H.
name: Kokkotas, Kostas D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we demonstrate how different semi-classical methods can be combined in a novel way to reconstruct the perturbation potential of ultra compact stars. Besides rather general assumptions, the only specific information entering this approach is the spectrum of the $\textit{trapped}$ axial quasi-normal modes. In general it is not possible to find a unique solution for the potential in the inverse problem, but instead a family of potentials producing the same spectrum. Nevertheless, this already determines important properties of the involved potential and can be used to rule out many candidate models. A unique solution was found based on the additional natural assumption that the exterior part ($r \gtrsim 3\,M$) is described by the Regge-Wheeler potential. This is true in general relativity for any non-rotating spherically symmetric object. This technique can be potentially applied for the study of deviations from general relativity. The methods we demonstrate are easy to implement and rather general, therefore we expect them also to be interesting for other fields where inverse spectrum problems are studied, e.g. quantum physics and molecular spectroscopy.
description: Accepted for publication in CQG; 12 pages, 8 figures and 2 tables
Linear and logarithmic time compositions of quantum many-body operators
Creators: name: Motzoi, Felix
name: Kaicher, Michael
name: Wilhelm, Frank
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a generalized framework for constructing many-body-interaction operations either in linear time, or in logarithmic time with a linear number of ancilla qubits. Exact gate decompositions are given in particular for Pauli strings, many-control Toffoli gates, number-~and parity-conserving interactions, Unitary Coupled Cluster operations, and sparse matrix generators. We provide a linear time protocol that works by creating a superposition of exponentially many different possible operator strings and then uses dynamical decoupling methodology to undo all the unwanted terms. A logarithmic time protocol overcomes the speed limit of the first by using ancilla registers to condition evolution to the support of the desired many-body interaction before using parallel chaining operations to expand the string length. The two techniques improve substantially on current strategies (reductions in time and space can range from linear to exponential), are applicable to different physical interaction mechanisms such as CNOT, $XX$, and $XX+YY$, and generalize to a wide range of many-body operators.
description: 8 pages, 4 figures
Understanding the non-linear clustering of high redshift galaxies
Creators: name: Jose, Charles
name: Baugh, Carlton M.
name: Lacey, Cedric G.
name: Subramanian, Kandaswamy
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We incorporate the non-linear clustering of dark matter halos, as modelled by Jose et al. (2016) into the halo model to better understand the clustering of Lyman break galaxies (LBGs) in the redshift range $z=3-5$. We find that, with this change, the predicted LBG clustering increases significantly on quasi-linear scales ($0.1 \leq r\,/\,h^{-1} \,{\rm Mpc} \leq 10$) compared to that in the linear halo bias model. This in turn results in an increase in the clustering of LBGs by an order of magnitude on angular scales $5" \leq θ\leq 100"$. Remarkably, the predictions of our new model on the whole remove the systematic discrepancy between the linear halo bias predictions and the observations. The correlation length and large scale galaxy bias of LBGs are found to be significantly higher in the non-linear halo bias model than in the linear halo bias model. The resulting two-point correlation function retains an approximate power-law form in contrast with that computed using the linear halo bias theory. We also find that the non-linear clustering of LBGs increases with increasing luminosity and redshift. Our work emphasizes the importance of using non-linear halo bias in order to model the clustering of high-z galaxies to probe the physics of galaxy formation and extract cosmological parameters reliably.
description: Accepted for publication in MNRAS
The Journal of Computational Literary Studies (JCLS): Community, review, and editorial workflow in an Open Access Journal
Creators: name: Gius, Evelyn
name: Schöch, Christof
name: Trilcke, Peer
name: Gerstorfer, Dominik
name: Guhr, Svenja
name: Ripoll, Elodie
name: Sluyter-Gäthje, Henny
Publisher: name: Zenodo
Year: 2023
Subjects: Paper
Poster
Open Access
Journal
Publishing
Publishing Workflow
digital publishing projects
systems
and methods
open access methods
Cultural studies
Literary studies

description: This poster reports on the experiences of launching a publisher-independent OA journal, the Journal of Computational Literary Studies (JCLS) and reflects the workflow established so far. It also discusses openess as a practice of opening up diversified communication spaces with regard to community involvement, peer reviewing, and the publishing workflow.
Rotation of an oblate satellite: Chaos control
Creators: name: Tarnopolski, Mariusz
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Chaotic Dynamics (nlin.CD)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Aims. This paper investigates the chaotic rotation of an oblate satellite in the context of chaos control. Methods. A model of planar oscillations, described with the Beletskii equation, was investigated. The Hamiltonian formalism was utilized to employ a control method for suppressing chaos. Results. An additive control term, which is an order of magnitude smaller than the potential, is constructed. This allows not only for significantly diminished diffusion of the trajectory in the phase space, but turns the purely chaotic motion into strictly periodic motion.
description: 9 pages, 4 figures; accepted in A&A
The role of wingbeat frequency and amplitude in flight power: supplementary information
Creators: name: Krishnan, Krishnamoorthy
name: Garde, Baptiste
name: Bennison, Ashley
name: Cole, Nik C.
name: Cole, Emma-L.
name: Darby, Jamie
name: Elliott, Kyle H.
name: Fell, Adam
name: Gómez-Laich, Agustina
name: de Grissac, Sophie
name: Jessopp, Mark
name: Lempidakis, Emmanouil
name: Mizutani, Yuichi
name: Prudor, Aurélien
name: Quetting, Michael
name: Quintana, Flavio
name: Robotka, Hermina
name: Roulin, Alexandre
name: Ryan, Peter G.
name: Schalcher, Kim
name: Schoombie, Stefan
name: Tatayah, Vikash
name: Tremblay, Fred
name: Weimerskirch, Henri
name: Whelan, Shannon
name: Wikelski, Martin
name: Yoda, Ken
name: Hedenström, Anders
name: Shepard, Emily L. C.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: 110601 Biomechanics
subject: FOS: Health sciences

description: This file contains information on ethical approvals for the tagged birds, mixed model results of interaction between wingbeat amplitude, frequency and airspeed for tropic birds and the effect of sampling frequency on the estimation of acceleration signal amplitude for the manuscript "The role of wingbeat frequency and amplitude in flight power" published in the Journal of Royal Society Interface.
P-wave superfluidity of atomic lattice fermions
Creators: name: Fedorov, A. K.
name: Yudson, V. I.
name: Shlyapnikov, G. V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We discuss the emergence of p-wave superfluidity of identical atomic fermions in a two-dimensional optical lattice. The optical lattice potential manifests itself in an interplay between an increase in the density of states on the Fermi surface and the modification of the fermion-fermion interaction (scattering) amplitude. The density of states is enhanced due to an increase of the effective mass of atoms. In deep lattices the scattering amplitude is strongly reduced compared to free space due to a small overlap of wavefunctions of fermion sitting in the neighboring lattice sites, which suppresses the p-wave superfluidity. However, for moderate lattice depths the enhancement of the density of states can compensate the decrease of the scattering amplitude. Moreover, the lattice setup significantly reduces inelastic collisional losses, which allows one to get closer to a p-wave Feshbach resonance. This opens possibilities to obtain the topological $p_x+ip_y$ superfluid phase, especially in the recently proposed subwavelength lattices. We demonstrate this for the two-dimensional version of the Kronig-Penney model allowing a transparent physical analysis.
description: 12 pages, 4 figures; published version
title: Spektrum Patholinguistik Band 15. Schwerpunktthema: Interdisziplinär behandeln – Multiprofessionelle Zusammenarbeit in der Sprachtherapie
Creators: name: Frank, Ulrike
name: Frank, Katrin
name: Mohr, Bettina
name: Kurtenbach, Stephanie
name: Khader-Lindholz, Aischa
name: Sallat, Stephan
name: Wagner, Lilli
name: Düring, Sarah
name: Lubitz, Anika
name: Schnelle, Kirsten
name: Klitsch, Julia
name: Netzebandt, Jonka
name: Fritsche, Tom
name: Uhlemann, Charlotte
name: Wartenburger, Isabell
name: Hilton, Matt
name: Neitzel, Isabel
name: Schmidt, Johanna
name: Eikerling, Maren
name: Cholin, Joana
name: Menze, Clara
name: Stadie, Nicole
name: Schmitz-Antonischki, Dorit
name: Heide, Judith
name: Plath, Almut
name: Corsten, Sabine
name: Hoffmann, Marie
name: Leinweber, Juliane
name: Spelter, Bianca
name: Karstens, Sven
Publisher: name: Universitätsverlag Potsdam
Year: 2022
Subjects: subject: 410 Linguistik

description: Das 15. Herbsttreffen Patholinguistik mit dem Schwerpunktthema »Interdisziplinär (be-)handeln – Multiprofessionelle Zusammenarbeit in der Sprachtherapie« fand am 20.11.2021 als Online-Veranstaltung statt. Das Herbsttreffen wird seit 2007 jährlich vom Verband für Patholinguistik e.V. (vpl), seit 2021 vom Deutschen Bundesverband für akademische Sprachtherapie und Logopädie (dbs) in Kooperation mit der Universität Potsdam durchgeführt. Der vorliegende Tagungsband beinhaltet die Vorträge zum Schwerpunktthema und Informationen aus der Podiumsdiskussion sowie die Posterpräsentationen zu weiteren Themen aus der sprachtherapeutischen Forschung und Praxis.
description: The Fifteenth Autumn Meeting Patholinguistics with its main topic »Interdisciplinary treatment - multiprofessional cooperation in speech/language therapy« took place online on the 20th of November 2021. This annual meeting has been organised since 2007 by the Association for Patholinguistics (vpl), since 2021 by the German Federal Association for Academic Speech/Language Therapy and Logopaedics (dbs) in cooperation with the University of Potsdam. The present proceedings feature the keynote presentations on the main topic and information from the panel discussion as well as articles from the poster session covering a broad range of areas in research and practice of speech/language therapy.
description: Spektrum Patholinguistik; 15
Presentation: The Importance of Digital Branding for Traditional Markets: an Empirical Approach
Creators: name: Didit Welly Udjianto
name: Subagio, Hani
name: Prapcoyo, Hari
name: Ilyasin Aditya Rahman
Publisher: name: Zenodo
Year: 2022

description: This material has presented on 1st International Conference on Advance Research in Social and Economic Science. October 25, 2022
Relaxation of nonequilibrium populations after a pump: the breaking of Mathiessen$'$s rule
Creators: name: Freericks, J. K.
name: Abdurazakov, O.
name: Kemper, A. F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: From the early days of many-body physics, it was realized that the self-energy governs the relaxation or lifetime of the retarded Green$'$s function. So it seems reasonable to directly extend those results into the nonequilibrium domain. But experiments and calculations of the response of quantum materials to a pump show that the relationship between the relaxation and the self-energy only holds in special cases. Experimentally, the decay time for a population to relax back to equilibrium and the linewidth measured in a linear-response angle-resolved photoemission spectroscopy differ by large amounts. Theoretically, aside from the weak-coupling regime where the relationship holds, one also finds deviations and additionally one sees violations of Mathiessen$'$s rule. In this work, we examine whether looking at an effective transport relaxation time helps to analyze the decay times of excited populations as they relax back to equilibrium. We conclude that it may do a little better, but it has a fitting parameter for the overall scale which must be determined.