cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
3D and 4D noncommutative electromagnetic duality and the role of the slowly varying fields limit
Creators: name: Rodrigues, Davi C.
name: Wotzasek, Clovis
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study classical noncommutative (NC) electromagnetic duality in both 3D and 4D space-times through the Seiberg-Witten (SW) map to all orders in theta. We evaluate the role of space-time dimensions, of the gauge coupling constant g^2 inversion, of the slowly varying fields (SVF) limit and of the rule theta --> g^2 *theta (where * is the Hodge duality operator), which was originally found in the 4D space-time. Among our results, a new scalar picture for NC electromagnetism to second order in theta is established, a formula which simplifies considerably the application of the SW map in 3D is presented and we show that the SVF limit has a crucial role in this duality starting from the third order in theta for any dimension: outside this limit the symmetry between theta and g^2 *theta is lost.
description: 10 pages, PoS style, Fifth International Conference on Mathematical Methods in Physics
Maximum-principle-satisfying discontinuous Galerkin methods for incompressible two-phase immiscible flow
Creators: name: Joshaghani, M. S.
name: Riviere, B.
name: Sekachev, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This paper proposes a fully implicit numerical scheme for immiscible incompressible two-phase flow in porous media taking into account gravity, capillary effects, and heterogeneity. The objective is to develop a fully implicit stable discontinuous Galerkin (DG) solver for this system that is accurate, bound-preserving, and locally mass conservative. To achieve this, we augment our DG formulation with post-processing flux and slope limiters. The proposed framework is applied to several benchmark problems and the discrete solutions are shown to be accurate, to satisfy the maximum principle and local mass conservation.
description: 33 pages, 27 figures
3D-1D coupling on non conforming meshes via three-field optimization based domain decomposition
Creators: name: Berrone, Stefano
name: Grappein, Denise
name: Scialo', Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N30, 65N50, 68U20, 86-08

description: A new numerical approach is proposed for the simulation of coupled three-dimensional and one-dimensional elliptic equations (3D-1D coupling) arising from dimensionality reduction of 3D-3D problems with thin inclusions. The method is based on a well posed mathematical formulation and results in a numerical scheme with high robustness and flexibility in handling geometrical complexities. This is achieved by means of a three-field approach to split the 1D problems from the bulk 3D problem, and then resorting to the minimization of a properly designed functional to impose matching conditions at the interfaces. Thanks to the structure of the functional, the method allows the use of independent meshes for the various subdomains.
title: Организационные основы защиты информации
Creators: name: ELS IPR BOOKS
Publisher: name: Южно-Уральский технологический университет, Челябинский государственный университет
Year: 2025

description: В учебнике излагаются систематизированные базовые положения организационных основ защиты информации. В нем учтены последние изменения и дополнения законодательства, а также современное состояние правоприменительной практики. Соответствует актуальным требованиям федерального государственного образовательного стандарта высшего образования. Предназначен для студентов, изучающих учебную дисциплину: «Правовое регулирование информационной безопасности», направление специальности 40.05.04 Судебная и прокурорская деятельность и содержит основные теоретические вопросы, включаемые в билеты для зачетов и экзаменов.
Additional file 6 of ARTP/EMS-combined multiple mutagenesis efficiently improved production of raw starch-degrading enzymes in Penicillium oxalicum and characterization of the enzyme-hyperproducing mutant
Creators: name: Gu, Li-Sha
name: Tan, Ming-Zhu
name: Li, Shi-Huan
name: Zhang, Ting
name: Zhang, Qi-Qiang
name: Li, Cheng-Xi
name: Luo, Xue-Mei
name: Feng, Jia-Xun
name: Zhao, Shuai
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Table S2. Mutation sites in coding sequences (CDS) in the mutant A2-13 compared with that in OXPoxGA15A.
Whole Earth Telescope observations of the pulsating subdwarf B star PG 0014+067
Creators: name: Vuckovic, M.
name: Kawaler, S. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: PG 0014+067 is one of the most promising pulsating subdwarf B stars for seismic analysis, as it has a rich pulsation spectrum. The richness of its pulsations, however, poses a fundamental challenge to understanding the pulsations of these stars, as the mode density is too complex to be explained only with radial and nonradial low degree (l < 3) p-modes without rotational splittings. One proposed solution, for the case of PG 0014+067 in particular, assigns some modes with high degree (l=3). On the other hand, theoretical models of sdB stars suggest that they may retain rapidly rotating cores, and so the high mode density may result from the presence of a few rotationally-split triplet (l=1), quintuplet (l=2) modes, along with radial (l=0) p-modes. To examine alternative theoretical models for these stars, we need better frequency resolution and denser longitude coverage. Therefore, we observed this star with the Whole Earth Telescope for two weeks in October 2004. In this paper we report the results of Whole Earth Telescope observations of the pulsating subdwarf B star PG 0014+067. We find that the frequencies seen in PG 0014+067 do not appear to fit any theoretical model currently available; however, we find a simple empirical relation that is able to match all of the well-determined frequencies in this star.
description: 19 pages, preprint of paper accepted for publication in The Astrophysical Journal
Ερμηνευτική και νομολογιακή προσέγγιση των ενδίκων βοηθημάτων του αρθ. 6 Ν. 2664/1998
Creators: name: Γάτσιος; Γεώργιος Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Κτηματολόγιο
Ένδικα βοηθήματα
Άρθρο 6 Ν. 2664/1998
Cadastre
Legal remedies
Article 6, Law 2664/1998

description: Σκοπός της μεταπτυχιακής διπλωματικής εργασίας ήταν η ενδελεχής ερμηνευτική και νομολογιακή προσέγγιση των ενδίκων βοηθημάτων που προβλέπονται στις διατάξεις του άρθρου 6 του Ν. 2664/1998 περί εθνικού κτηματολογίου. Αρχικά, εξετάζονται η έννοια της κτηματολογικής εγγραφής και οι επί μέρους διακρίσεις αυτής, ώστε ο αναγνώστης να είναι ευχερέστερο για τον αναγνώστη να κατανοήσει τη φύση και το εύρος των αναφυόμενων ζητημάτων σε περιπτώσεις ανακρίβειάς της. Εν συνεχεία, παρατίθεται με την μέγιστη εφικτή πληρότητα, σαφήνεια, αλλά και συντομία, καθένα από τα ένδικα βοηθήματα που προβλέπονται στο εν λόγω άρθρο, τα νομικά θέματα που απασχόλησαν κι απασχολούν τη θεωρία και τη νομολογία σχετικώς και η γνώμη του συγγραφέα επ’ αυτών, με παραπομπές στη βιβλιογραφία και τις εκδοθείσες αποφάσεις των ελληνικών Δικαστηρίων.
description: The purpose of this postgraduate thesis was to provide a thorough interpretative and legislative approach of the legal remedies referred in the Article 6 of Law, n. 2664/1998 regarding the national cadaster. In the first part of the thesis, the concept of cadastral registration and its subheadings are being examined, in order to make it easier for the reader to understand the nature and width of issues emerging in case of its inaccuracies. Furthermore, it is set out, with the greatest possible completeness and clarity, but also briefly, each of the legal remedies referred in the aforementioned article, the legal issues that have been dealt with this far by both theory and case-law and the author’s opinion on them, with references to bibliography and case-law of Greek Courts.
Casimir forces for the ideal Bose gas in anisotropic optical lattices: the effect of alternating sign upon varying dimensionality
Creators: name: Napiórkowski, Marek
name: Jakubczyk, Pawel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyze the thermodynamic Casimir effect occurring in a gas of non-interacting bosons confined by two parallel walls with a strongly anisotropic dispersion inherited from an underlying lattice. In the direction perpendicular to the confining walls the standard quadratic dispersion is replaced by the term $|{\bf p}|^α$ with $α\geq 2$ treated as a parameter. We derive a closed, analytical expression for the Casimir force depending on the dimensionality $d$ and the exponent $α$, and analyze it for thermodynamic states in which the Bose-Einstein condensate is present. For $α\in\{4,6,8,\dots\}$ the exponent governing the decay of the Casimir force with increasing distance between the walls becomes modified and the Casimir amplitude $Δ_α(d)$ exhibits oscillations of sign as a function of $d$. Otherwise we find that $Δ_α(d)$ features singularities when viewed as a function of $d$ and $α$. Recovering the known previous results for the isotropic limit $α=2$ turns out to occur via a cancellation of singular terms.
description: 15 pages, 3 figures
Correlations in random Apollonian network
Creators: name: Zhang, Zhongzhi
name: Zhou, Shuigeng
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In this paper, by both simulations and theoretical predictions we study two and three node (or degree) correlations in random Apollonian network (RAN), which have small-world and scale-free topologies. Using the rate equation approach under the assumption of continuous degree, we first give the analytical solution for two node correlations, expressed by average nearest-neighbor degree (ANND). Then, we revisit the degree distribution of RAN using rate equation method and get the exact connection distribution, based on which we derive a more accurate result for mean clustering coefficient as an average quantity of three degree correlations than the one previously reported. Analytical results reveal that ANND has no correlations with respect to degree, while clustering coefficient is dependent on degree, showing a power-law behavior as $C(k)\sim k^{-1}$. The obtained expressions are successfully contrasted with extensive numerical simulations.
description: 11 pages, 3 figures. Accepted for publication in Physica A
Probabilistic Modeling of Bursts and Gradual Changes of Diversification Rates in Bird Evolution
Creators: name: Senderov, Viktor
name: Kudlicka, Jan
name: Lartillot, Nicolas
name: Lundén, Daniel
name: Quintero, Ignacio
name: Morlon, Hélène
name: Broman, David
name: Ronquist, Fredrik
Publisher: name: Zenodo
Year: 2022
Subjects: diversification
geometric Brownian motion
phylogenetics
bird evolution
probabilistic programming languages
C++

description: In our previous work, the PhyPPL concept paper [1], we used the sequential Monte-Carlo algorithm in a
probabilistic programming language framework to do a Bayes factor comparison for the diversification models
CRBD, TDBD, BAMM, LSBDS (not shown, a weaker variation of BAMM), and the novel ClaDS on the 40 bird
clades having more than 50 species, taken from https://birdtree.org/. We identified four patterns:
● Group 1 (small trees such as Alcedinidae): simple models are adequate (CRBD as good as the others);
● Group 2 (e.g. Muscicapidae-+): evidence for slowing down of diversification (TDBD outperforms others);
● Group 3 (e.g. Accipitridae): cladogenetic changes in diversification (ClaDS outperforms others);
● Group 4 (e.g. Anatinae): cladogenetic and punctuated anagenetic lineage-specific changes. (ClaDS and BAMM/
LSBDS best).
We introduce two new models (AnaDS-GBM and AnaDS-GBM+LS) to investigate the effect of gradual and
punctuated anagenetic changes in speciation rates. For this poster we tested AnaDS-GBM on one tree per group.
Probabilistic Modeling of Bursts and Gradual Changes of Diversification Rates in Bird Evolution
Creators: name: Senderov, Viktor
name: Kudlicka, Jan
name: Lartillot, Nicolas
name: Lundén, Daniel
name: Quintero, Ignacio
name: Morlon, Hélène
name: Broman, David
name: Ronquist, Fredrik
Publisher: name: Zenodo
Year: 2022
Subjects: diversification
geometric Brownian motion
phylogenetics
bird evolution
probabilistic programming languages
C++

description: In our previous work, the PhyPPL concept paper [1], we used the sequential Monte-Carlo algorithm in a
 probabilistic programming language framework to do a Bayes factor comparison for the diversification models
 CRBD, TDBD, BAMM, LSBDS (not shown, a weaker variation of BAMM), and the novel ClaDS on the 40 bird
 clades having more than 50 species, taken from https://birdtree.org/. We identified four patterns:
 ● Group 1 (small trees such as Alcedinidae): simple models are adequate (CRBD as good as the others);
 ● Group 2 (e.g. Muscicapidae-+): evidence for slowing down of diversification (TDBD outperforms others);
 ● Group 3 (e.g. Accipitridae): cladogenetic changes in diversification (ClaDS outperforms others);
 ● Group 4 (e.g. Anatinae): cladogenetic and punctuated anagenetic lineage-specific changes. (ClaDS and BAMM/
 LSBDS best).
 We introduce two new models (AnaDS-GBM and AnaDS-GBM+LS) to investigate the effect of gradual and
 punctuated anagenetic changes in speciation rates. For this poster we tested AnaDS-GBM on one tree per group.
Διαχρονικές λαϊκοθρησκευτικές παραδόσεις στην Κάρπαθο
Creators: name: Χριστοδουλάκης, Ιωάννης Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Κάρπαθος
Παραδόσεις
Λαογραφία
Karpathos
Traditions
Folklore

description: Σκοπός της διατριβής είναι η αποτύπωση και μελέτη των διαχρονικών λαϊκοθρησκευτικών παραδόσεων των κατοίκων της Καρπάθου. Οι περισσότερες απ’ αυτές τις παραδόσεις δεν προέρχονται από προφορικές πηγές αλλά αποτελούν προσωπικά βιώματα. Στη συνέχεια παρουσιάσαμε αναλυτικά την σχέση του ανθρώπου με το Θείο και τους Αγίους της Ορθοδόξου πίστεως.\Ακόμη αναφερθήκαμε στην επιρροή των διαφόρων προκαταλήψεων στη ζωή του ανθρώπου, από την γέννηση έως τον θάνατό του. Ένα άλλο θέμα που θίξαμε ήταν η αναλυτική εξέταση κάποιων ξεχωριστών Καρπάθικων εθίμων κατά την διάρκεια του έτους.
description: The aim of the present thesis is the imprint and the study of religious and folklore traditions in Karpathos through the ages. Most of those traditions are personal experiences and do not come from only spoken sources. Furthermore, we analyzed the relation between man and divine, man and the Saints of Orthodox Church. We also examined the impact of the folk superstitions on the day life, starting from the birth till the men’s death. Another aim of this study was the comprehensive examination some of the distinct Karpathian customs through out the year.
description: Σε συνεργασία με: Κοινωνικής Θεολογίας (Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών)
Distributed statistical inference with pyhf enabled through funcX
Creators: name: Feickert, Matthew
name: Heinrich, Lukas
name: Stark, Giordon
name: Galewsky, Ben
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In High Energy Physics facilities that provide High Performance Computing environments provide an opportunity to efficiently perform the statistical inference required for analysis of data from the Large Hadron Collider, but can pose problems with orchestration and efficient scheduling. The compute architectures at these facilities do not easily support the Python compute model, and the configuration scheduling of batch jobs for physics often requires expertise in multiple job scheduling services. The combination of the pure-Python libraries pyhf and funcX reduces the common problem in HEP analyses of performing statistical inference with binned models, that would traditionally take multiple hours and bespoke scheduling, to an on-demand (fitting) "function as a service" that can scalably execute across workers in just a few minutes, offering reduced time to insight and inference. We demonstrate execution of a scalable workflow using funcX to simultaneously fit 125 signal hypotheses from a published ATLAS search for new physics using pyhf with a wall time of under 3 minutes. We additionally show performance comparisons for other physics analyses with openly published probability models and argue for a blueprint of fitting as a service systems at HPC centers.
description: 10 pages, 2 figures, 2 listings, 1 table, presented at the 25th International Conference on Computing in High Energy & Nuclear Physics
Search for critical points by measuring spatial correlation lengths via multiplicity density fluctuations
Creators: name: Homma, Kensuke
name: collaboration, the PHENIX
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The nature of phase boundaries in the QCD phase diagram has not been satisfactorily explored by experiments. Based on the Ginzburg-Landau free energy with a spatially inhomogeneous term as a function of a scalar order parameter, it is possible to determine spatial correlation lengths from measured two point correlation functions in general, where a spatially dependent multiplicity fluctuation from the mean value is taken as the order parameter. The divergence of the correlation lengths can be a robust signature of a critical system as well as the disappearance of $$ condensations. Simultaneous observations of such observables can probe the nature of the phase boundary conclusively. In this letter, a present result from the PHENIX experiment will be reported. We will focus whether a critical behavior of the phase transition exists or not by searching for increases of pseudo-rapidity correlation lengths as a function of the number of participant nucleons with dominantly low $p_t$ charged particles where instant fluctuations such as high $p_t$ jets are expected to be negligible. The result shows a non monotonic increase in the correlation lengths which can be a symptom of the critical behavior.
description: 12 pages, 4 figures, The 3rd edition of the International Workshop The Critical Point and Onset of Deconfinement
Additional file 3 of ARTP/EMS-combined multiple mutagenesis efficiently improved production of raw starch-degrading enzymes in Penicillium oxalicum and characterization of the enzyme-hyperproducing mutant
Creators: name: Gu, Li-Sha
name: Tan, Ming-Zhu
name: Li, Shi-Huan
name: Zhang, Ting
name: Zhang, Qi-Qiang
name: Li, Cheng-Xi
name: Luo, Xue-Mei
name: Feng, Jia-Xun
name: Zhao, Shuai
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Fig. S3. Effects of culture conditions and inoculated spore number on RSDE production of P. oxalicum strain A2-13. (A) Initial pH of medium; (B) incubation temperature; (C) Carbon source; (D) Proportions of wheat bran and Avicel; (E) Nitrogen source; (F) NH4NO3 concentration; (G) inoculated spore number. P. oxalicum strains were cultured at 28 °C and 180 rpm for 6 days. Each data point represents mean ± SD. Each experiment contained three biological replicates.
Cognitive or Qualitative? Qualitative Pretest Interviews in Questionnaire Development
Creators: name: Bethmann, Arne
name: Buschle, Christina
name: Reiter, Herwig
Publisher: name: Zenodo
Year: 2019

description: Cognitive interviews have become one of the most important pretest procedures in the development and evaluation of questionnaires. Different techniques such as thinking aloud or different probing approaches examine the comprehensibility of questions and statements and uncover the reasons for difficulties of respondents in answering questionnaires. What is missing in cognitive interviewing is the methodological framing of these techniques. Against this background our contribution proposes such a methodological framing on the basis of similarities of cognitive interviewing procedures with qualitative interviewing strategies. Both involve direct research interactions that can be regarded as communication processes between interviewer and respondent based on intersubjective understanding (Fremdverstehen). We introduce methodically integrated communication strategies of two established qualitative interviewing techniques - the problem-centred interview and the discursive interview - and discuss their potential for the development of a pretest interview approach, which includes the techniques of the cognitive interview and accounts for the essentially social character of processes of clarifying comprehension. We suggest the term Qualitative Pretest Interview (QPI) in order to avoid a narrow understanding of pretest procedures as focused on the problem of ambiguous cognitions. Finally, we discuss the potential practical benefits of this approach of interviewer-respondent interaction for standardized survey research and provide examples from QPIs that were conducted during actual questionnaire development.
Measurements of $W^+W^-+\ge 1~$jet production cross-sections in $pp$ collisions at $\sqrt{s}=13~$TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Fiducial and differential measurements of $W^+W^-$ production in events with at least one hadronic jet are presented. These cross-section measurements are sensitive to the properties of electroweak-boson self-interactions and provide a test of perturbative quantum chromodynamics and the electroweak theory. The analysis is performed using proton$-$proton collision data collected at $\sqrt{s}=13~$TeV with the ATLAS experiment, corresponding to an integrated luminosity of 139$~$fb$^{-1}$. Events are selected with exactly one oppositely charged electron$-$muon pair and at least one hadronic jet with a transverse momentum of $p_{\mathrm{T}}>30~$GeV and a pseudorapidity of $|η|<4.5$. After subtracting the background contributions and correcting for detector effects, the jet-inclusive $W^+W^-+\ge 1~$jet fiducial cross-section and $W^+W^-+$ jets differential cross-sections with respect to several kinematic variables are measured, thus probing a previously unexplored event topology at the LHC. These measurements include leptonic quantities, such as the lepton transverse momenta and the transverse mass of the $W^+W^-$ system, as well as jet-related observables such as the leading jet transverse momentum and the jet multiplicity. Limits on anomalous triple-gauge-boson couplings are obtained in a phase space where interference between the Standard Model amplitude and the anomalous amplitude is enhanced.
description: 58 pages in total, author list starting page 42, 14 figures, 9 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2018-34/
Weakly-Supervised Temporal Action Localization Through Local-Global Background Modeling
Creators: name: Wang, Xiang
name: Qing, Zhiwu
name: Huang, Ziyuan
name: Feng, Yutong
name: Zhang, Shiwei
name: Jiang, Jianwen
name: Tang, Mingqian
name: Shao, Yuanjie
name: Sang, Nong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Weakly-Supervised Temporal Action Localization (WS-TAL) task aims to recognize and localize temporal starts and ends of action instances in an untrimmed video with only video-level label supervision. Due to lack of negative samples of background category, it is difficult for the network to separate foreground and background, resulting in poor detection performance. In this report, we present our 2021 HACS Challenge - Weakly-supervised Learning Track solution that based on BaSNet to address above problem. Specifically, we first adopt pre-trained CSN, Slowfast, TDN, and ViViT as feature extractors to get feature sequences. Then our proposed Local-Global Background Modeling Network (LGBM-Net) is trained to localize instances by using only video-level labels based on Multi-Instance Learning (MIL). Finally, we ensemble multiple models to get the final detection results and reach 22.45% mAP on the test set
description: CVPR-2021 HACS Challenge - Weakly-supervised Learning Track champion solution (1st Place)
Stochastic-field approach to the quench dynamics of the one-dimensional Bose polaron
Creators: name: Jager, Jonas
name: Barnett, Ryan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider the dynamics of a quantum impurity after a sudden interaction quench into a one-dimensional degenerate Bose gas. We use the Keldysh path integral formalism to derive a truncated Wigner like approach that takes the back action of the impurity onto the condensate into account already on the mean-field level and further incorporates thermal and quantum effects up to one-loop accuracy. This framework enables us not only to calculate the real space trajectory of the impurity but also the absorption spectrum. We find that quantum corrections and thermal effects play a crucial role for the impurity momentum at weak to intermediate impurity-bath couplings.Furthermore, we see the broadening of the absorption spectrum with increasing temperature.
What Exactly is the Information Paradox?
Creators: name: Mathur, Samir D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The black hole information paradox tells us something important about the way quantum mechanics and gravity fit together. In these lectures I try to give a pedagogical review of the essential physics leading to the paradox, using mostly pictures. Hawking's argument is recast as a `theorem': if quantum gravity effects are confined to within a given length scale and the vacuum is assumed to be unique, then there will be information loss. We conclude with a brief summary of how quantum effects in string theory violate the first condition and make the interior of the hole a `fuzzball'.
description: Latex, 43 pages, 17 figures (Proceedings of the 4th Aegean Summer School on Black Holes, Mytilene (Greece), September 2007)
Proposal Relation Network for Temporal Action Detection
Creators: name: Wang, Xiang
name: Qing, Zhiwu
name: Huang, Ziyuan
name: Feng, Yutong
name: Zhang, Shiwei
name: Jiang, Jianwen
name: Tang, Mingqian
name: Gao, Changxin
name: Sang, Nong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This technical report presents our solution for temporal action detection task in AcitivityNet Challenge 2021. The purpose of this task is to locate and identify actions of interest in long untrimmed videos. The crucial challenge of the task comes from that the temporal duration of action varies dramatically, and the target actions are typically embedded in a background of irrelevant activities. Our solution builds on BMN, and mainly contains three steps: 1) action classification and feature encoding by Slowfast, CSN and ViViT; 2) proposal generation. We improve BMN by embedding the proposed Proposal Relation Network (PRN), by which we can generate proposals of high quality; 3) action detection. We calculate the detection results by assigning the proposals with corresponding classification results. Finally, we ensemble the results under different settings and achieve 44.7% on the test set, which improves the champion result in ActivityNet 2020 by 1.9% in terms of average mAP.
description: CVPR-2021 ActivityNet Temporal Action Localization Challenge champion solution (1st Place)
The COMPASS Experiment at CERN
Creators: name: COMPASS Collaboration
name: Abbon, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The COMPASS experiment makes use of the CERN SPS high-intensitymuon and hadron beams for the investigation of the nucleon spin structure and the spectroscopy of hadrons. One or more outgoing particles are detected in coincidence with the incoming muon or hadron. A large polarized target inside a superconducting solenoid is used for the measurements with the muon beam. Outgoing particles are detected by a two-stage, large angle and large momentum range spectrometer. The setup is built using several types of tracking detectors, according to the expected incident rate, required space resolution and the solid angle to be covered. Particle identification is achieved using a RICH counter and both hadron and electromagnetic calorimeters. The setup has been successfully operated from 2002 onwards using a muon beam. Data with a hadron beam were also collected in 2004. This article describes the main features and performances of the spectrometer in 2004; a short summary of the 2006 upgrade is also given.
description: 84 papes, 74 figures
The chomskyan paradigm shift of growing language in the mind/brain: A validation of the 'Nama (mind)-Rupa (body) hypothesis'
Creators: name: Pattama Yimsakul
Publisher: name: Nakhon Pathom Rajabhat University
Year: 2019
Subjects: Chomskyan paradigm shift of growing language in the mind/brain, Nama-Rupa hypothesis of ELT/SLA, sequential exploratory mixed-methods design.

description: Journal of Thai Interdisciplinary Research, 14, 3, 27
Pre-main sequence stars in the Lagoon Nebula (M8)
Creators: name: Arias, Julia I.
name: Barba, Rodolfo H.
name: Morrell, Nidia I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of new pre-main sequence (PMS) stars in the Lagoon Nebula (M8) at a distance of 1.25 kpc, based on intermediate resolution spectra obtained with the Boller & Chivens spectrograph at the 6.5-m Magellan I telescope (Las Campanas Observatory, Chile). According to the spectral types, the presence of emission lines and the lithium 6708A absorption line, we are able to identify 27 classical T Tauri stars, 7 weak-lined T Tauri stars and 3 PMS emission objects with spectral type G, which we include in a separated stellar class denominated "PMS Fe/Ge class". Using near-infrared photometry either from 2MASS or from our own previous work we derive effective temperatures and luminosities for these stars and locate them in the Hertzsprung-Russell diagram, in order to estimate their masses and ages. We find that almost all of our sample stars are younger than 3 10^6 years and span over a range of masses between 0.8 and 2.5 Msun. A cross-correlation between our spectroscopic data and the X-ray sources detected with the Chandra ACIS instrument is also presented.
description: 18 pages, 15 figures, MNRAS, in press
Studying the first galaxies with ALMA
Creators: name: Carilli, C. L.
name: Walter, F.
name: Wang, R.
name: Wootten, A.
name: Menten, K.
name: Bertoldi, F.
name: Schinnerer, E.
name: Cox, P.
name: Beelen, A.
name: Omont, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss observations of the first galaxies, within cosmic reionization, at centimeter and millimeter wavelengths. We present a summary of current observations of the host galaxies of the most distant QSOs ($z \sim 6$). These observations reveal the gas, dust, and star formation in the host galaxies on kpc-scales. These data imply an enriched ISM in the QSO host galaxies within 1 Gyr of the big bang, and are consistent with models of coeval supermassive black hole and spheroidal galaxy formation in major mergers at high redshift. Current instruments are limited to studying truly pathologic objects at these redshifts, meaning hyper-luminous infrared galaxies ($L_{FIR} \sim 10^{13}$ L$_\odot$). ALMA will provide the one to two orders of magnitude improvement in millimeter astronomy required to study normal star forming galaxies (ie. Ly-$α$ emitters) at $z \sim 6$. ALMA will reveal, at sub-kpc spatial resolution, the thermal gas and dust -- the fundamental fuel for star formation -- in galaxies into cosmic reionization.
description: to appear in Science with ALMA: a new era for Astrophysics}, ed. R. Bachiller (Springer: Berlin); 5 pages, 7 figures
Direct reading of charge multipliers with a self-triggering CMOS analog chip with 105k pixels at 50 micron pitch
Creators: name: Bellazzini, R.
name: Spandre, G.
name: Minuti, M.
name: Baldini, L.
name: Brez, A.
name: Cavalca, F.
name: Latronico, L.
name: Omodei, N.
name: Massai, M. M.
name: Sgro, C.
name: Costa, E.
name: Krummenacher, P. Soffitta F.
name: DeOliveira, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on a large active area (15x15mm2), high channel density (470 pixels/mm2), self-triggering CMOS analog chip that we have developed as pixelized charge collecting electrode of a Micropattern Gas Detector. This device, which represents a big step forward both in terms of size and performance, is the last version of three generations of custom ASICs of increasing complexity. The CMOS pixel array has the top metal layer patterned in a matrix of 105600 hexagonal pixels at 50 micron pitch. Each pixel is directly connected to the underneath full electronics chain which has been realized in the remaining five metal and two poly-silicon layers of a 0.18 micron VLSI technology. The chip has customizable self-triggering capability and includes a signal pre-processing function for the automatic localization of the event coordinates. In this way it is possible to reduce significantly the readout time and the data volume by limiting the signal output only to those pixels belonging to the region of interest. The very small pixel area and the use of a deep sub-micron CMOS technology has brought the noise down to 50 electrons ENC. Results from in depth tests of this device when coupled to a fine pitch (50 micron on a triangular pattern) Gas Electron Multiplier are presented. The matching of readout and gas amplification pitch allows to get optimal results. The application of this detector for Astronomical X-Ray Polarimetry is discussed. The experimental detector response to polarized and unpolarized X-ray radiation when working with two gas mixtures and two different photon energies is shown. Results from a full MonteCarlo simulation for several galactic and extragalactic atronomical sources are also reported.
description: 14 pages, 18 figures, to be submitted to Nuclear Instruments and methode A
The environment of graphene probed by electrostatic force microscopy
Creators: name: Moser, J.
name: Verdaguer, A.
name: Jimenez, D.
name: Barreiro, A.
name: Bachtold, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We employ electrostatic force microscopy to study the electrostatic environment of graphene sheets prepared with the micro-mechanical exfoliation technique. We detect the electric dipole of residues left from the adhesive tape during graphene preparation, as well as the dipole of water molecules adsorbed on top of graphene. Water molecules form a dipole layer that can generate an electric field as large as 10^9 V/m. We expect that water molecules can significantly modify the electrical properties of graphene devices.
description: to be published in Applied Physics Letters
Optimisation of an active heat engine
Creators: name: Gronchi, Giulia
name: Puglisi, Andrea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Optimisation of heat engines at the micro-scale has applications in biological and artificial nano-technology, and stimulates theoretical research in non-equilibrium statistical physics. Here we consider non-interacting overdamped particles confined by an external harmonic potential, in contact either with a thermal reservoir or with a stochastic self-propulsion force (active Ornstein-Uhlenbeck model). A cyclical machine is produced by periodic variation of the parameters of the potential and of the noise. An exact mapping between the passive and the active model allows us to define the effective temperature $T_{eff}(t)$ which is meaningful for the thermodynamic performance of the engine. We show that $T_{eff}(t)$ is different from all other known active temperatures, typically used in static situations. The mapping allows us to optimise the active engine, whatever are the values of the persistence time or self-propulsion velocity. In particular - through linear irreversible thermodynamics (small amplitude of the cycle) - we give explicit formula for the optimal cycle period and phase delay (between the two modulated parameters, stiffness and temperature) achieving maximum power with Curzon-Ahlborn efficiency. In the quasi-static limit, the formula for $T_{eff}(t)$ simplifies and coincides with a recently proposed temperature for stochastic thermodynamics, bearing a compact expression for the maximum efficiency. A point - overlooked in recent literature - is made about the difficulty in defining efficiency without a consistent definition of effective temperature.
description: 18 pages, 6 pages, submitted for publication
Halpha with Heating by Particle Beams
Creators: name: Kasparova, J.
name: Varady, M.
name: Karlicky, M.
name: Heinzel, P.
name: Moravec, Z.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using 1D NLTE radiative hydrodynamics we model the influence of the particle beams on the Halpha line profile treating the beam propagation and the atmosphere evolution self-consistently. We focus on the influence of the non-thermal collisional rates and the return current. Based on our results, we propose a diagnostic method for determination of the particle beam presence in the formation regions of the Halpha line.
description: In press, "Physics of Chromospheric Plasmas" (Coimbra), ASP 368, 441 (2007)
Variantenmanagement in der Modellbildung und Simulation unter Verwendung des SES/MB Frameworks
Creators: name: Schmidt, Artur
Publisher: name: Universität Rostock
Year: 2018
Subjects: subject: 004 Data processing Computer sciences
subject: 620 Engineering & allied operations
subject: 621.3 Electrical Engineering, Electronics

description: Die vorliegende Arbeit leistet einen Beitrag zur Entwicklung von allgemeinen Methoden zum Variantenmanagement in der Modellbildung und Simulation bis auf die Ebene der Simulationsexperimente und zur automatisierten Ausführung von Simulationsexperimenten. Der Lösungsvorschlag basiert auf der modular-hierarchischen Modellbildung und dem System Entity Structure/Model Base Framework. Das Variantenmanagement umfasst die Phasen Variantenanalyse, -formalisierung, -implementierung und –generierung. Weiterhin wird ein Konzeptrahmen zum automatisierten Experimentieren erarbeitet.
Additional file 4 of ARTP/EMS-combined multiple mutagenesis efficiently improved production of raw starch-degrading enzymes in Penicillium oxalicum and characterization of the enzyme-hyperproducing mutant
Creators: name: Gu, Li-Sha
name: Tan, Ming-Zhu
name: Li, Shi-Huan
name: Zhang, Ting
name: Zhang, Qi-Qiang
name: Li, Cheng-Xi
name: Luo, Xue-Mei
name: Feng, Jia-Xun
name: Zhao, Shuai
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: Fig. S4. Colonic (A) and mycelial (B) analysis of the P. oxalicum strains A2-13 and OXPoxGA15A on plates containing various carbon sources. RNCA: natural raw cassava flour plus Avicel, RNCF: natural raw cassava flour, PDA: potato dextrose agar. Scale bar = 100 μm.
Three-Body Scattering Hypervolume of Particles with Unequal Masses
Creators: name: Wang, Zipeng
name: Tan, Shina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the collision of three particles with arbitrary mass ratio at zero collision energy, assuming arbitrary short-range potentials, and generalize the three-body scattering hypervolume $D$ first defined for identical bosons in 2008. We solve the three-body Schrödinger equation asymptotically when the three particles are far apart or one pair and a third particle are far apart, deriving two asymptotic expansions of the wave function, and the parameter $D$ appears at the order $1/B^4$, where $B$ is the overall size of the triangle formed by the particles. We then analyze the ground state energy of three such particles with vanishing or negligible two-body scattering lengths in a large periodic volume of side length $L$, where the three-body parameter contributes a term of the order $D/L^6$. From this result we derive some properties of a two-component Bose gas with negligible two-body scattering lengths: its energy density at zero temperature, the corresponding generalized Gross-Pitaevskii equation, the conditions for the stability of the two-component mixture against collapse or phase separation, and the decay rates of particle densities due to three-body recombination.
description: 10 pages, no figure
Exact many-electron ground states on the diamond Hubbard chain
Creators: name: Gulacsi, Zsolt
name: Kampf, Arno
name: Vollhardt, Dieter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Exact ground states of interacting electrons on the diamond Hubbard chain in a magnetic field are constructed which exhibit a wide range of properties such as flat-band ferromagnetism and correlation induced metallic, half-metallic or insulating behavior. The properties of these ground states can be tuned by changing the magnetic flux, local potentials, or electron density.
description: 4 pages, 2 figures
Noncentrosymmetric topological Dirac semimetals in three dimensions
Creators: name: Gao, Heng
name: Strockoz, Jeremy
name: Frakulla, Mario
name: Venderbos, Jörn W. F.
name: Weng, Hongming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Topological Dirac semimetals are a class of semimetals that host symmetry-protected Dirac points near the Fermi level, which arise due to a band inversion of the conduction and valence bands. In this work, we study the less explored class of \emph{noncentrosymmetric} topological Dirac semimetals in three dimensions. We identify the noncentrosymmetric crystallographic point groups required to stabilize fourfold degenerate band crossings and derive model Hamiltonians for all distinct types of band inversions allowed by symmetry. Using these model Hamiltonians, which emphasize the physical nature of the allowed couplings, we establish the generic electronic phase diagram noncentrosymmetric Dirac semimetals and show that it generically includes phases with coexistent Weyl point nodes or Weyl line nodes. In particular, for one specific type of band inversion in sixfold symmetric systems we show that Weyl line nodes are always present. Based on first-principles calculations, we predict that BiPd$_2$O$_4$ is a noncentrosymmetric Dirac semimetal under 20 Gpa pressure and hosts topological type-II Dirac points on the fourfold rotation axis. Furthermore, we propose that the hexagonal polar alloy LiZnSb$_{x}$Bi$_{1-x}$ realizes a Dirac semimetal with coexistent Weyl points. Interestingly, the emergence and location of the Weyl points is highly tunable and can be controlled by the alloy concentration $x$. More generally, our results not only establish band-inverted noncentrosymmetric systems as a broad and versatile class of topological semimetals, but also provide a framework for studying the quantum nonlinear Hall effect and nonlinear optical properties in the Dirac semimetals.
description: 17 pages, 10 figures
Cross-lingual keyword assignment
Creators: name: Steinberger, Ralf
Publisher: name: arXiv
Year: 2006
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: H.3.1; H.3.3; H.3.4; H.3.6

description: This paper presents a language-independent approach to controlled vocabulary keyword assignment using the EUROVOC thesaurus. Due to the multilingual nature of EUROVOC, the keywords for a document written in one language can be displayed in all eleven official European Union languages. The mapping of documents written in different languages to the same multilingual thesaurus furthermore allows cross-language document comparison. The assignment of the controlled vocabulary thesaurus descriptors is achieved by applying a statistical method that uses a collection of manually indexed documents to identify, for each thesaurus descriptor, a large number of lemmas that are statistically associated to the descriptor. These associated words are then used during the assignment procedure to identify a ranked list of those EUROVOC terms that are most likely to be good keywords for a given document. The paper also describes the challenges of this task and discusses the achieved results of the fully functional prototype.
description: Precursor paper to cs.CL/0609059. The automatic classification system described here has now matured and is in daily use for document indexing in a European parliament. See http://langtech.jrc.it/Eurovoc.html for more details. 8 pages
An associative memory for the on-line recognition and prediction of temporal sequences
Creators: name: Bose, J.
name: Furber, S. B.
name: Shapiro, J. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper presents the design of an associative memory with feedback that is capable of on-line temporal sequence learning. A framework for on-line sequence learning has been proposed, and different sequence learning models have been analysed according to this framework. The network model is an associative memory with a separate store for the sequence context of a symbol. A sparse distributed memory is used to gain scalability. The context store combines the functionality of a neural layer with a shift register. The sensitivity of the machine to the sequence context is controllable, resulting in different characteristic behaviours. The model can store and predict on-line sequences of various types and length. Numerical simulations on the model have been carried out to determine its properties.
description: Published in IJCNN 2005, Montreal, Canada