cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dilatation symmetry in higher dimensions and the vanishing of the cosmological constant
Creators: name: Wetterich, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A wide class of dilatation symmetric effective actions in higher dimensions leads to a vanishing four-dimensional cosmological constant. This requires no tuning of parameters and results from the absence of an allowed potential for the scalar dilaton field. The field equations admit many solutions with flat four-dimensional space and non-vanishing gauge couplings. In a more general setting, these are candidates for asymptotic states of cosmological runaway solutions, where dilatation symmetry is realized dynamically if a fixed point is approached as time goes to infinity. Dilatation anomalies during the runaway can lift the degeneracy of solutions and lead to an observable dynamical dark energy.
description: 4 pages
Det Nationale Alkoholbehandlingsregister
Creators: Sundhedsstyrelsen
Statens Serum Institut
Sundhedsdatastyrelsen
Publisher: name: Rigsarkivet
Year: 2022

description: Danne grundlag for Sundhedsdatastyrelsens løbende statistik til belysning af alkoholmisbrugets art og omfang B) Forsyne de myndigheder, der er ansvarlige for behandlingen af alkoholikere på såvel overordnet og regionalt niveau med det nødvendige beslutningsgrundlag C) Bidrage til forskning. Indsamle, opbevare, analysere, anonymisere data.
Improving Multimodal fusion via Mutual Dependency Maximisation
Creators: name: Colombo, Pierre
name: Chapuis, Emile
name: Labeau, Matthieu
name: Clavel, Chloe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Multimodal sentiment analysis is a trending area of research, and the multimodal fusion is one of its most active topic. Acknowledging humans communicate through a variety of channels (i.e visual, acoustic, linguistic), multimodal systems aim at integrating different unimodal representations into a synthetic one. So far, a consequent effort has been made on developing complex architectures allowing the fusion of these modalities. However, such systems are mainly trained by minimising simple losses such as $L_1$ or cross-entropy. In this work, we investigate unexplored penalties and propose a set of new objectives that measure the dependency between modalities. We demonstrate that our new penalties lead to a consistent improvement (up to $4.3$ on accuracy) across a large variety of state-of-the-art models on two well-known sentiment analysis datasets: \texttt{CMU-MOSI} and \texttt{CMU-MOSEI}. Our method not only achieves a new SOTA on both datasets but also produces representations that are more robust to modality drops. Finally, a by-product of our methods includes a statistical network which can be used to interpret the high dimensional representations learnt by the model.
An analysis of the oral reading errors of grade one pupils in terms of two teaching emphases
Creators: name: Bryce, Joy Alberta
Publisher: name: University of British Columbia
Year: 2010

description: This study examined differences in oral reading behaviour of 58 grade one children attending achool in Richmond, B.C. Half the subjects received initial reading instruction through a phonics approach; half the subjects received initial reading instruction through a language experience approach. Among the findings were that subjects taught by the phonics approach, which emphasized letter-sound correspondence, produced more oral reading errors, more nonwords, and more substitutions with graphic and sound similarity to the response word than did children instructed by the language experience approach. Subjects taught by the language experience approach produced fewer errors and more substitutions syntactically and semantically acceptable, and more substitutions that did not alter the meaning of the sentence than the children instructed by the phonics approach. An analysis of the children's substitution errors for high, middle and low achievement groups was also discussed.
Galium longipedunculatum Mariath & K. De Toni 2015, comb.nov.
Creators: name: De Toni, Karen L. G.
name: Mariath, Jorge E. A.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Rubiaceae
Galium
Galium longipedunculatum

description: 2. Galium longipedunculatum (Mariath&Ehrendorfer)Mariath&K.De Toni, comb.nov.
Relbunium longipedunculatum Mariath & Ehrendorfer (1977:184).
Type: — BRAZIL. Rio Grande do Sul: Cambará do Sul, Itaimbezinho, 3 December 1971, J.C. Lindeman, F.M. Lindeman, A.M. Girardi & M.L. Porto (holotype ICN 9332!, isotype U 6267).
Additional selected specimens:— BRAZIL. Rio Grande do Sul: Bom Jesus, Serra da Rocinha, 18 January 1950, B. Rambo 45364 (PACA). Cambará do Sul, 26 July 1975, J. Waechter (ICN 29115); Itaimbezinho, 18 December 1950, B. Rambo 49357 (PACA); Jaquirana, 6 April 2002, K. De Toni (RB 444175).
Both species are restricted to mountain top grasslands (Campos de Cima de Serra), a physiographic region located within the states of Rio Grande do Sul and Santa Catarina (above 800 m). These species grow in rocky grasslands (Campos Rupestres) or rocky outcrops. Galium longipedunculatum is also found on basalt cliffs located within the Aparados da Serra and Serra Geral National Parks (Porto et al. 1977).
description: Published as part of De Toni, Karen L. G. & Mariath, Jorge E. A., 2015, New combinations for two species of Galium (Rubiaceae) from southern Brazil, pp. 295-298 in Phytotaxa 218 (3) on page 296, DOI: 10.11646/phytotaxa.218.3.8, http://zenodo.org/record/13635563
Spectral Action of Curvature-Confidence Fields in Higgs-to-Z Simulated Events: A 11.92σ Harmonic Deviation from the Standard Model
Creators: name: Sixta, David
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Quantum field theory
subject: Physics
subject: Particle physics
subject: Theoretical physics

description: We report the emergence of a novel curvature-based observable, the trust vector,  derived from high-statistics simulated DELPHI data. By projecting particle momentum, curvature, and detection confidence into a harmonic vector space, we observe a statistically significant spectral deviation from Standard Model expectations. After incorporating Sixtan Quantum Numbers to account for underlying topological twist manifolds, the cumulative deviation exceeds 11.92σ. This result is invariant across multiple Higgs decay channels and suggests a geometric basis for observer-defined reality embedded within a higher-dimensional phase structure.
Characterizing finite $p$-groups by their Schur multipliers, $t(G)=5$
Creators: name: Niroomand, Peyman
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20D15, 20E34, 20F18

description: Let $G$ be a finite $p$-group of order $p^n$. It is known that $|\mathcal{M}(G)|=p^{\f{1}{2}n(n-1)-t(G)}$ and $t(G)\geq 0$. The structure of $G$ characterized when $t(G)\leq 4$ in \cite{be,el,ni,sa,zh}. The structure description of $G$ is determined in this paper for $t(G)=5$.
description: To appear in Mathematical Reports with small revisions
Calibrating systematic errors in the distance determination with the luminosity-distance space large scale structure of dark sirens and its potential applications
Creators: name: Zhang, Pengjie
name: Yu, Hai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The cosmological luminosity-distance can be measured from gravitational wave (GW) standard sirens, free of astronomical distance ladders and the associated systematics. However, it may still contain systematics arising from various astrophysical, cosmological and experimental sources. With the large amount of dark standard sirens of upcoming third generation GW experiments, such potential systematic bias can be diagnosed and corrected by statistical tools of the large scale structure of the universe. We estimate that, by cross-correlating the dark siren luminosity-distance space distribution and galaxy redshift space distribution, multiplicative error $m$ in the luminosity distance measurement can be constrained with $1σ$ uncertainty $σ_m\sim 0.1$. This is already able to distinguish some binary black hole origin scenarios unambiguously. Significantly better constraints and therefore more applications may be achieved by more advanced GW experiments.
description: Accepted by MNRAS
Pierwszy przypadek zawleczenia do Polski Lasiodites pictus (Macleay, 1825) (Coleoptera: Nitidulidae)
Creators: name: Andrzej Lasoń
name: Dawid Marczak
Publisher: name: Zenodo
Year: 2025
Subjects: Coleoptera, Nitidulidae, introduction, Mazovian Lowland, alien species

description: First recorded introduction of Lasiodites pictus (Macleay, 1825) (Coleoptera: Nitidulidae) into Poland.This study reports the first documented occurrence of the alien species Lasiodites pictus in Poland. It was found in rotten grapes.
A Novel Division Algorithm for the Residue Number System
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 80201 Analysis of Algorithms and Complexity
subject: FOS: Computer and information sciences
subject: 10399 Numerical and Computational Mathematics not elsewhere classified
subject: FOS: Mathematics

description: We present in this paper a novel general algorithm for signed number division in Residue Number Systems (RNS). A parity checking technique is used to accomplish the sign and overflow detection in this algorithm. Compared with conventional methods of sign and overflow detection, the parity checking method is more efficient and practical. Sign magnitude arithmetic division is implemented using binary search. There is no restriction to the dividend and the divisor (except zero divisor), and no quotient estimation is necessary before the division is executed. Only simple operations are needed to accomplish the RNS division. All these characteristics have made our algorithm simple, efficient, and practical to be implemented on a real RNS divider.
LiDAR Inertial Mapping of Non-Manhattan Topologies for UAV-Based Aircraft Inspection in GNSS-Denied Environments
Creators: name: Pugliese, Roland Felix Leonard
name: Abel, Dirk
Publisher: name: RWTH Aachen University
Year: 2022

description: Preprints, 13th IFAC Symposium on Robot Control : Online, Matsumoto, Japan. October 17-20, 2022 13. IFAC Symposium on Robot Control, SYROCO 2021, online, Japan, 17 Oct 2022 - 20 Oct 2022; 49-54 (2022).
ScanJour Vers. G 8.6.22
Creators: Herlev Hospital
Publisher: name: Rigsarkivet
Year: 2022

description: Sagsbehandling og dokumentation af forhold for Region Hovedstadens drift, forskning, udvikling og udstillingsvirksomhed.
Journalsystemet har til formål:
 - At sikre en hurtig og effektiv sagsbehandling
 - At være registrerings-og kontrolsystem for den administrative håndtering af Herlev Hospital sager
 - At være genfindingssystem for det emnemæssige indhold i Herlev Hospitals sager
 - At sikre sagernes rette nummerering
 - At sikre vidensdeling
Quarkonia as probes of the QGP and the initial stages of the heavy-ion collisions with ALICE
Creators: name: Lofnes, Ingrid McKibben
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Studies of quarkonium production in heavy-ion collisions can be used for probing QGP properties. The suppression and regeneration of bound quarkonium states is sensitive to the medium properties. Modifications of the quarkonium polarization in Pb-Pb collisions with respect to pp collisions may give further insight into the suppression and regeneration mechanisms in the QGP. Quarkonia are also sensitive to the initial stages of heavy-ion collisions, and measurements in photonuclear collisions may help constrain the nuclear gluon-distribution at low Bjorken-$x$. In this work, recent quarkonium measurements performed by ALICE in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}~=~5.02$ TeV will be discussed. Preliminary measurements of the inclusive J/$ψ$ $R_{\rm AA}$ measured at both forward and midrapidity will be presented. The J/$ψ$ polarization measured for the first time in Pb-Pb collisions, as well as preliminary measurements of the coherent J/$ψ$ photoproduction cross section, will be discussed.
description: Proceedings of the International Conference on Strangeness in Quark Matter 2021 (SQM 2021), New York, USA (online), May 17-22, 2021. 4 pages, 3 figures; Submitted to EPJ Web of Conference
The canonical embedding of an unramified morphism in an étale morphism
Creators: name: Rydh, David
Publisher: name: arXiv
Year: 2009
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14A20

description: We show that every unramified morphism X->Y has a canonical and universal factorization X->E->Y where the first morphism is a closed embedding and the second is etale (but not separated).
description: 18 pages (uses TikZ for figures); some minor corrections; correct proof that E_{X/Y} is locally of finite presentation (Lemma 3.2 and Appendix C); final version to appear in Math. Z
Using a hazard profiling approach for developing an occupational health and safety management system in small to medium sized enterprises
Creators: name: Bogna, Frank
Publisher: name: CQUniversity
Year: 2021
Subjects: subject: 150312 Organisational Planning and Management
subject: FOS: Economics and business
subject: 150314 Small Business Management

description: This study examines whether safety risks can be identified and managed in small to medium sized enterprises (SMEs) through the use of a hazard profile, and in turn assist in the development of safety plans for the enterprise.
SECTEUR QUATERNAIRE ET COMPÉTITIVITÉ AU SÉNÉGAL : LE RÔLE STRATÉGIQUE DE L'INTELLIGENCE ÉCONOMIQUE
Creators: name: Birame MBODJ
Publisher: name: Zenodo
Year: 2025

description: Cet article explore le rôle stratégique de l’intelligence économique (IE) dans le développement du secteur quaternaire au Sénégal. L’IE, en tant qu’outil de collecte, d’analyse et de diffusion de l’information stratégique, constitue un levier clé pour améliorer la prise de décision, renforcer l’innovation et anticiper les évolutions du marché. À travers une analyse comparative avec d’autres pays émergents et une revue des bonnes pratiques, cette étude met en évidence les opportunités offertes par l’IE pour accroître la compétitivité du Sénégal.      Les résultats soulignent la nécessité de mettre en place une politique nationale d’intelligence économique, impliquant une meilleure coordination entre les acteurs publics et privés, une intégration accrue de l’IE dans les formations académiques et un soutien renforcé aux start-ups technologiques et aux infrastructures numériques. L’article propose ainsi plusieurs recommandations stratégiques, notamment la création d’un observatoire national de l’IE, le développement d’incubateurs spécialisés et l’amélioration des mécanismes de veille et de cyber sécurité.
Spectroscopic observations of PHz G237.01+42.50: A galaxy protocluster at z=2.16 in the Cosmos field
Creators: name: Polletta, M.
name: Soucail, G.
name: Dole, H.
name: Lehnert, M. D.
name: Pointecouteau, E.
name: Vietri, G.
name: Scodeggio, M.
name: Montier, L.
name: Koyama, Y.
name: Lagache, G.
name: Frye, B. L.
name: Cusano, F.
name: Fumana, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Planck satellite has identified more than 2000 protocluster candidates with extreme star formation rates (SFRs). Here, we present the spectroscopic identification of a Planck-selected protocluster located in the Cosmos field, PHz G237.01+42.50 (G237). G237 contains a galaxy overdensity of 31 spectroscopically identified galaxies at z~2.16 (significant at 5.4 sigma) in a 10'x11' region. The overdensity contains two substructures or protoclusters at ~2.16 and 2.195 with estimated halo masses at z=0 of ~(5-6)x10^14 Msun. The overdensity total SFR, ~4000 Msun/yr, is higher than predicted by simulations but much smaller than the SFR derived from the Planck data. The analysis of the Herschel data, in combination with the available ancillary data, shows that such a difference is due to an effect of source alignment along the line of sight that produces a 5 sigma overdensity of red Herschel sources in the field. We analyze the members' UV spectra and UV-far-infrared spectral energy distributions to derive their SFR, stellar mass, and metallicity. Galaxy members include blue star-forming galaxies and AGN with SFRs and stellar masses consistent with the main sequence. AGN, identified through optical spectroscopy or X-ray data, represent a significant fraction (20+/-10%) of all members of the protocluster at z=2.16, and they are powerful enough to produce radiative feedback. The core of this protocluster, besides being denser, includes members that are, on average, more massive and star-forming and contains a larger fraction of AGN and Herschel-detected galaxies than the full sample, suggesting an environmental effect on galaxy growth. A comparison between G237 and other protoclusters in the literature at similar redshifts reveals some common traits and differences that reflect both observational biases and a diversity in intrinsic properties that is not yet fully understood.
description: (40 pages, 28 figures) Accepted for publication in A&A
Attitudes of secondary school graduates and teachers towards the literacy skills of university-bound students in British Columbia
Creators: name: Mackworth, Marian E.
Publisher: name: University of British Columbia
Year: 2010

description: Surveys two populations, teachers of grade 12 English in the province of British Columbia and recent high school graduates who are now in English 100 at the University of British Columbia, to ascertain the differing perspectives held by those two groups toward certain literacy and communication skills deemed to be relevant to successful university or college study. Respondents were asked to rate the frequency of teaching of each skill, the strength of the average university-bound student (or the student respondent) in each skill, and the importance of each skill to university study. All student-completed questionnaires were considered usable. A 76% return was obtained from teachers in the Province. Results, reported in descriptive terms, were analyzed by computer using programs from SPSS Statistical Package for the Social Sciences. It was found that teachers agree with students as to the freguency of the teaching of skills and the importance of those skills to university study. However, students and teachers show less agreement in rating the strength that students have in individual skills.
The Bethe Ansatz for AdS5 x S5 Bound States
Creators: name: de Leeuw, M
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We reformulate the nested coordinate Bethe ansatz in terms of coproducts of Yangian symmetry generators. This allows us to derive the nested Bethe equations for the bound state string S-matrices. We find that they coincide with the Bethe equations obtained from a fusion procedure. The bound state number dependence in the Bethe equations appears through the parameters x^{\pm} and the dressing phase only.
description: typos corrected
Digital como Ciência
Creators: name: De Brito Lucindo Da Silva, Otavio Alves
Publisher: name: Zenodo
Year: 2021
Subjects: Humanidades Digitais
Ideologia Neoliberal
Neoliberalismo
Computação e Tecnologia em Todas as Ciências
Otávio Brito

description: Slide e apresentação no evento: Jornada Científica Favelades Universitáries: Quais os caminhos levam os favelades à Universidade e a Universidade à Favela? Link da apresentação gravada: https://youtu.be/OnGZ6_MRSFg
Collapse of the mean curvature flow for isoparametric submanifolds in non-compact symmetric spaces
Creators: name: Koike, Naoyuki
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C44, 53C35

description: It is known that principal orbits of Hermann actions on a symmetric space of non-compact type are curvature-adapted isoparametric submanifolds having no focal point of non-Euclidean type on the ideal boundary of the ambient symmetric space. In this paper, we investigate the mean curvature flows for such a curvature-adapted isoparametric submanifold and its focal submanifold. Concretely the investigation is performed by investigating the mean curvature flows for the lift of the submanifold to an infinite dimensional pseudo-Hilbert space through a pseudo-Riemannian submersion.
description: 30pages
Defect studies in strain-relaxed Si$_{1-x}$Ge$_x$ alloys
Creators: name: Kalem, Seref
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Raman light scattering, low-temperature photoluminescence, light-scattering tomography, and hydrogenation were used to investigate optical properties of defects in strain-relaxed Si_{1-x}Ge_x (0.05 \le x \le 0.50) alloys. The photoluminescence emission was characterized by typical zero-phonon, phonon-assisted, and dislocations-related emissions, which are dependent on Ge composition x. However, luminescence spectra exhibited above band-gap features, which are likely associated with the presence of Si-rich regions in the alloys. The results are correlated with light-scattering tomography, revealing the presence of dislocations and Si precipitates. The excess peak at 519 cm^{-1} in Ge-rich samples is supportive of this observation. At low Ge content, a dislocation-related band (D2 line) at 14,204 Å dominates D-band emission for x < 0.25 while overall D-band emission intensity decreases with x. Hydrogenation was found to enhance D-band emission, indicating a passivation of nonradiative recombination centers inside dislocation cores. Si-Si, Si-Ge, and Ge-Ge phonons (TO, TA, and LA), which are participating in luminescence emission, evolve with increasing Ge content and Ge-Ge and Si-Ge TO lines dominate the Raman spectrum to the detriment of the Si-Si TO phonon line. Raman spectra reveal the presence of alloy fluctuations and possible presence of Ge particles, particularly in Ge-rich samples.
Observability of Quantum Criticality and a Continuous Supersolid in Atomic Gases
Creators: name: Diehl, S.
name: Baranov, M.
name: Daley, A. J.
name: Zoller, P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We analyze the Bose-Hubbard model with a three-body hardcore constraint by mapping the system to a theory of two coupled bosonic degrees of freedom. We find striking features that could be observable in experiments, including a quantum Ising critical point on the transition from atomic to dimer superfluidity at unit filling, and a continuous supersolid phase for strongly bound dimers.
description: 4 pages, 2 figures, published version (Editor's suggestion)
Serverless Architecture for Service Robot Management System
Creators: name: Nishimiya, Kenji
name: Imai, Yuta
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: We have developed service robot management system to facilitate effective collaboration between multiple units and types of robots in operation. This system is implemented by serverless architecture on cloud and using cellular based IoT communication. So it has not only usual cloud system advantage that it is not necessary to prepare dedicated server and network equipment, but it reduces management efforts of servers. We have tested the system with robots in a public facility, and successfully confirmed its performance and functionality.
Vacuum effects in a vibrating cavity: time refraction, dynamical Casimir effect, and effective Unruh acceleration
Creators: name: Mendonca, J. T.
name: Brodin, G.
name: Marklund, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Two different quantum processes are considered in a perturbed vacuum cavity: time refraction and dynamical Casimir effect. They are shown to be physically equivalent, and are predicted to be unstable, leading to an exponential growth in the number of photons created in the cavity. The concept of an effective Unruh acceleration for these processes is also introduced, in order to make a comparison in terms of radiation efficiency, with the Unruh radiation associated with an accelerated frame in unbounded vacuum.
description: 5 pages, version to appear in Physics Letters A
The Deep Consensus Principle: A Methodological Tool for the Foundation of Rational Argumentation and Dialogue
Creators: name: Tuimala, Tuomas Tapani
Publisher: name: Zenodo
Year: 2025

description: This article introduces the Deep Consensus Principle (DCP), a methodological tool designed to anchor rational argumentation and dialogue in observational-level expert consensus, independent of worldview or metaphysical differences. In scientific, philosophical, and societal discussions, disputes often arise not from facts but from their interpretations. The DCP addresses this by providing a systematic framework to distinguish shared observational facts—such as rising global temperatures or DNA’s coding nature—from divergent conclusions, fostering intellectually honest conversation. The article defines the DCP’s three criteria (expert consensus, worldview neutrality, empirical anchoring), explores its applications in fields like historical research, biology, and ethics, and examines its limitations. Originally developed as a practical tool for writing and teaching, the DCP offers value to researchers, educators, and anyone seeking clarity in complex debates. First published at www.tuomastuimala.fi on March 31, 2025, this work is licensed under CC BY-SA 4.0.
Uniq Omsorg
Creators: Brønderslev-Dronningelund Kommune
Brønderslev Kommune
Publisher: name: Rigsarkivet
Year: 2022

description: At kunne dokumentere, hvilke indsatser og faglige vurderinger, der er leveret til borgerne på følgende områder:
* hjemmepleje
* sygepleje
* træning
Nature of electrons from oxygen vacancies and polar catastrophe at LaAlO3/SrTiO3 interfaces
Creators: name: Zhou, Xiaorong
name: Liu, Zhiqi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The relative significance of quantum conductivity correction and magnetic nature of electrons in understanding the intriguing low-temperature resistivity minimum and negative magnetoresistance of the two-dimensional electron gas at LaAlO3/SrTiO3 interfaces has been a long outstanding issue since its discovery. Here we report a comparative magnetotransport study on amorphous and oxygen-annealed crystalline LaAlO3/SrTiO3 heterostructures at a relatively high-temperature range, where the orbital scattering is largely suppressed by thermal fluctuations. Despite of a predominantly negative out-of-plane magnetoresistance effect for both, the magnetotransport is isotropic for amorphous LaAlO3/SrTiO3 while strongly anisotropic and well falls into a two-dimensional quantum correction frame for annealed crystalline LaAlO3/SrTiO3. These results clearly indicate that a large portion of electrons from oxygen vacancies are localized at low temperatures, serving as magnetic centers, while the electrons from the polar field are only weakly localized due to constructive interference between time-reversed electron paths in the clean limit and no signature of magnetic nature is visible.
description: 9 pages, 4 figures. Accepted in Journal of Physics: Condensed Matter
The current state and future directions of modeling thermosphere density enhancements during extreme magnetic storms
Creators: name: Oliveira, Denny M.
name: Zesta, Eftyhia
name: Mehta, Piyush M.
name: Licata, Richard J.
name: Pilinski, Marcin D.
name: Tobiska, W. Kent
name: Hayakawa, Hisashi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Space Physics (physics.space-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Satellites, crewed spacecraft and stations in low-Earth orbit (LEO) are very sensitive to atmospheric drag. A satellite's lifetime and orbital tracking become increasingly inaccurate or uncertain during magnetic storms. Given the planned increase of government and private satellite presence in LEO, the need for accurate density predictions for collision avoidance and lifetime optimization, particularly during extreme events, has become an urgent matter and requires comprehensive international collaboration. Additionally, long-term solar activity models and historical data suggest that solar activity will significantly increase in the following years and decades. In this article, we briefly summarize the main achievements in the research of thermosphere response to extreme magnetic storms occurring particularly after the launching of many satellites with state-of-the-art accelerometers from which high-accuracy density can be determined. We find that the performance of an empirical model with data assimilation is higher than its performance without data assimilation during all extreme storm phases. We discuss how forecasting models can be improved by looking into two directions: first, to the past, by adapting historical extreme storm datasets for density predictions, and second, to the future, by facilitating the assimilation of large-scale thermosphere data sets that will be collected in future events. Therefore, this topic is relevant to the scientific community, government agencies that operate satellites, and the private sector with assets operating in LEO.
description: 14 pages, 2 figures
On hypercomplex pseudo-Hermitian manifolds
Creators: name: Gribachev, Kostadin
name: Manev, Mancho
name: Dimiev, Stancho
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C15, 53C50 (Primary) 32Q60, 32Q15 (Secondary)

description: The class of the hypercomplex pseudo-Hermitian manifolds is considered. The flatness of the considered manifolds with the 3 parallel complex structures is proved. Conformal transformations of the metrics are introduced. The conformal invariance and the conformal equivalence of the basic types manifolds are studied. A known example is characterized in relation to the obtained results.
description: 12 pages, presented on The Sixth International Workshop on Complex Structures and Vector Fields, St Konstantin, Bulgaria, 3-6 September 2002
Flow regimes of submerged gas jets
Creators: name: Hoefele, Enrique Oscar
Publisher: name: University of British Columbia
Year: 2010

description: The behaviour of a gas jet injected into a liquid has been studied as a function of gas and liquid densities, gas flow rate, tuyere diameter and tuyere design. A novel technique has been developed to study the interaction of a submerged gas jet into injected opaque liquids. The jet is blown through a "half-tuyere" fastened to the plexiglas side wall of the liquid-containing vessel. In this way the jet can be viewed and photographed with a high speed camera. Also pressure measurements have been made at various points along the tuyere using a fast-response pressure transducer. This method was employed to study air, helium and argon injected into mercury, zinc chloride solution and water, as a function of gas rate. The results of pressure and cinematography show that two limiting types of behaviour can be identified: jet pulsations at low gas flow rates and steady jetting at high gas rates. For a high-density liquid the transition occurs at the point where, with increasing back pressure, the jet becomes underexpanded. Industrial experiments performed in a nickel converter confirmed that these two types of regimes are also found when blowing into a high-temperature melt. From the results obtained, a modified operating practice for matte converting has been suggested, in order to improve substantially tuyere and refractory life.
Steady state of overdamped particles in the non-conservative force field of a simple non-linear model of optical trap
Creators: name: Mangeat, M.
name: Guérin, T.
name: Dean, D. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Optically trapped particles are often subject to a non-conservative scattering force arising from radiation pressure. In this paper we present an exact solution for the steady state statistics of an overdamped Brownian particle subjected to a commonly used force field model for an optical trap. The model is the simplest of its kind that takes into account non-conservative forces. In particular, we present exact results for certain marginals of the full three dimensional steady state probability distribution as well as results for the toroidal probability currents which are present in the steady state, as well as for the circulation of theses currents. Our analytical results are confirmed by numerical solution of the steady state Fokker-Planck equation.
description: 14 pages, 3 figures
Data Tables for Mars Flooding Triggered by Atmospheric Collapse
Creators: name: Buhler, Peter
Publisher: name: figshare
Year: 2021
Subjects: Planetary Science

description: Data Tables Description for: Buhler, P.B., 2021. Mars global-scale flooding triggered by atmospheric collapse. Submitted. Planetary Science Institute, 1700 East Fort Lowell, Suite 106, Tucson, AZ 85719, USA E-mail address: pbuhler@psi.edu (P.B. Buhler) Version Date 2021.11.18 I have provided the data tables for all figures and thermal column model routine used in Buhler (2021). The regolith adsorption model can be found in Buhler and Piqueux (2021). The full description can be found in Data Tables Description_v1.0.pdf
Onboard Multivariable Controller Design for a Small Scale Helicopter Using Coefficient Diagram Method
Creators: name: Budiyono, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences
subject: I.2.9

description: A mini scale helicopter exhibits not only increased sensitivity to control inputs and disturbances, but also higher bandwidth of its dynamics. These properties make model helicopters, as a flying robot, more difficult to control. The dynamics model accuracy will determine the performance of the designed controller. It is attractive in this regards to have a controller that can accommodate the unmodeled dynamics or parameter changes and perform well in such situations. Coefficient Diagram Method (CDM) is chosen as the candidate to synthesize such a controller due to its simplicity and convenience in demonstrating integrated performance measures including equivalent time constant, stability indices and robustness. In this study, CDM is implemented for a design of multivariable controller for a small scale helicopter during hover and cruise flight. In the synthesis of MIMO CDM, good design common sense based on hands-on experience is necessary. The low level controller algorithm is designed as part of hybrid supervisory control architecture to be implemented on an onboard computer system. Its feasibility and performance are evaluated based on its robustness, desired time domain system responses and compliance to hard-real time requirements.
description: 8 pages, 6 figures
Short-recurrence Krylov subspace methods for the overlap Dirac operator at nonzero chemical potential
Creators: name: Bloch, Jacques C. R.
name: Breu, Tobias
name: Frommer, Andreas
name: Heybrock, Simon
name: Schäfer, Katrin
name: Wettig, Tilo
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The overlap operator in lattice QCD requires the computation of the sign function of a matrix, which is non-Hermitian in the presence of a quark chemical potential. In previous work we introduced an Arnoldi-based Krylov subspace approximation, which uses long recurrences. Even after the deflation of critical eigenvalues, the low efficiency of the method restricts its application to small lattices. Here we propose new short-recurrence methods which strongly enhance the efficiency of the computational method. Using rational approximations to the sign function we introduce two variants, based on the restarted Arnoldi process and on the two-sided Lanczos method, respectively, which become very efficient when combined with multishift solvers. Alternatively, in the variant based on the two-sided Lanczos method the sign function can be evaluated directly. We present numerical results which compare the efficiencies of a restarted Arnoldi-based method and the direct two-sided Lanczos approximation for various lattice sizes. We also show that our new methods gain substantially when combined with deflation.
description: 14 pages, 4 figures; as published in Comput. Phys. Commun., modified data in Figs. 2,3 and 4 for improved implementation of FOM algorithm, extended discussion of the algorithmic cost
Mantelzorgers van mensen met dementie
Creators: name: Francke, Anneke
name: Netherlands Institute for Health Services Research
Publisher: name: Zenodo
Year: 2024
Subjects: dementia
gender
healthcare
diversity

description: Factsheet and knowledgeclip describing the results of the research: verankering van sekse, gender en andere diversiteitskenmerken in dementiezorgonderzoek.
Réflexions sur la transversalité scientifique du droit des activités à risque : entre tradition de l'autonomie et nécessité d'ouverture
Creators: name: KOUSSIE EWANE Gabin
Publisher: name: Zenodo
Year: 2025

description: Le droit des activités à risque est un droit en transition qui impose une démarche réflexive. Ainsi, au regard de l’évolution des dynamiques sociales complexes, les besoins du moment commandent une approche écosystémique interdisciplinaire pour conférer plus d’objectivité à la règle de droit tout en garantissant la sécurité des personnes et des biens.
Solar Neutrinos as Background in Direct Dark Matter Searches
Creators: name: Vergados, J. D.
name: Ejiri, H.
name: Giomataris, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The coherent contribution of all neutrons in neutrino nucleus scattering due to the neutral current is examined considering the boron solar neutrinos. These neutrinos could potentially become a source of background in the future dark matter searches aiming at nucleon cross sections in the region well below the few events per ton per year.
description: 6 pages, 5 figures, Submitted for the DSU proceedings to be published by the American institute of Physics (AIP). References added
RAM Dagpenge-udbetaling (DP)
Creators: Arbejdsdirektoratet
Arbejdsmarkedsstyrelsen
Styrelsen for Arbejdsmarked og Rekruttering
Publisher: name: Rigsarkivet
Year: 2022

description: Jf. lovbekendtgørelse nr. 225 af 20. marts 2018 indberetter a-kasser udbetalinger af arbejdsløshedsdagpenge. RAM ("Register for Arbejdsmarkedet") er et fagsystem i Styrelsen for Arbejdsmarked og Rekruttering, der indeholder indberetninger fra arbejdsløshedskasserne vedr. udbetaling af dagpenge, feriedagpenge, efterløn og beskæftigelsesindsats mv. Formålet med RAM er at danne grundlag for udarbejdelse af statistikker, analyser mv. om arbejdsmarkedet og ændringer i forhold vedrørende arbejdsmarkedet.
Evaluating Collaborative Filtering Models in Music Recommender Systems: Enhancing Diversity and Long-Tail Metrics with a Multi-Stakeholder Approach
Creators: name: Tyman Rondiak, Diana
Publisher: name: Zenodo
Year: 2024
Subjects: music recommender systems
collaborative filtering
diversity

description: This thesis investigates the challenges and opportunities in enhancing fairness, diversity and long-tail content coverage in music recommender systems from a multi-stakeholder perspective. Music streaming platforms are pivotal in shaping music discovery, and the recommendations generated by these systems significantly impact user satisfaction as well as the visibility and success of artists. In this study, two collaborative filtering models are developed and evaluated: a simple model representing traditional approaches and an enhanced model incorporating advanced techniques such as diversity ranking and long-tail promotion. These enhancements aim to address the limitations of conventional music recommender systems, which often favour popular content, thereby reducing the diversity of recommendations. The effectiveness of these models is assessed using the metrics: Aggregate Diversity, Long-Tail Coverage and User Popularity Deviation. The results demonstrate that the enhanced model significantly improves diversity and long-tail coverage, suggesting its potential to offer more equitable and varied recommendations. However, the findings also highlight the complexity of balancing these improvements with user satisfaction, as increased diversity sometimes comes at the expense of relevance and personalization. This research underscores the importance of considering multiple stakeholders in the design of ethical and effective music recommendation systems. The study advocates for moving beyond user-centred approaches to include the perspectives of artists and platforms, thereby fostering a more balanced and inclusive ecosystem.
Large-N Solution of the Heterotic CP(N-1) Model with Twisted Masses
Creators: name: Bolokhov, P.
name: Shifman, M.
name: Yung, A
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We address a number of unanswered questions in the N=(0,2)-deformed CP(N-1) model with twisted masses. In particular, we complete the program of solving CP(N-1) model with twisted masses in the large-N limit. In hep-th/0512153 nonsupersymmetric version of the model with the Z_N symmetric twisted masses was analyzed in the framework of Witten's method. In arXiv:0803.0698 this analysis was extended: the large-N solution of the heterotic N=(0,2) CP(N-1) model with no twisted masses was found. Here we solve this model with the twisted masses switched on. Dynamical scenarios at large and small m are studied (m is the twisted mass scale). We found three distinct phases and two phase transitions on the m plane. Two phases with the spontaneously broken Z_N-symmetry are separated by a phase with unbroken Z_N. This latter phase is characterized by a unique vacuum and confinement of all U(1) charged fields ("quarks"). In the broken phases (one of them is at strong coupling) there are N degenerate vacua and no confinement, similarly to the situation in the N=(2,2) model. Supersymmetry is spontaneously broken everywhere except a circle |m|=Λin the Z_N-unbroken phase. Related issues are considered. In particular, we discuss the mirror representation for the heterotic model in a certain limiting case.
description: 69 pages, 14 figures; typos corrected, final version to appear in PRD; v Jan. 2014 Erratum added on p. 50, two references added and two references updated
Flux-Limited Diffusion Approximation Models of Giant Planet Formation by Disk Instability. II. Quadrupled Spatial Resolution
Creators: name: Boss, Alan P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: While collisional accumulation is nearly universally accepted as the formation mechanism of rock and ice worlds, the situation regarding gas giant planet formation is more nuanced. Gas accretion by solid cores formed by collisional accumulation is the generally favored mechanism, but observations increasingly suggest that gas disk gravitational instability might explain the formation of at least the massive or wide-orbit gas giant exoplanets. This paper continues a series aimed at refining three-dimensional (3D) hydrodynamical models of disk instabilities, where the handling of the gas thermodynamics is a crucial factor. Boss (2017, 2019, 2021) used the $β$ cooling approximation (Gammie 2001) to calculate 3D models of disks with initial masses of 0.091 $M_\odot$ extending from 4 to 20 au around 1 $M_\odot$ protostars. Here we employ 3D flux-limited diffusion (FLD) approximation models of the same disks, in order to provide a superior treatment of disk gas thermodynamics. The new models have quadrupled spatial resolution compared to previous 3D FLD models (Boss 2008, 2012), in both the radial and azimuthal spherical coordinates, resulting in the highest spatial resolution 3D FLD models to date. The new models continue to support the hypothesis that such disks can form self-gravitating, dense clumps capable of contracting to form gas giant protoplanets, and suggest that the FLD models yield similar numbers of clumps as $β$ cooling models with $β\sim$ 1 to $\sim$ 10, including the critical value of $β$ = 3 for fragmentation proposed by Gammie (2001).
description: 26 pages, 7 figures, 3 tables, accepted by ApJ. arXiv admin note: text overlap with arXiv:2103.02566
Modelling an Ammonium Transporter with SCLS
Creators: name: Coppo, Mario
name: Damiani, Ferruccio
name: Grassi, Elena
name: Guether, Mike
name: Troina, Angelo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: F.3.3; J.3; F.1.2

description: The Stochastic Calculus of Looping Sequences (SCLS) is a recently proposed modelling language for the representation and simulation of biological systems behaviour. It has been designed with the aim of combining the simplicity of notation of rewrite systems with the advantage of compositionality. It also allows a rather simple and accurate description of biological membranes and their interactions with the environment. In this work we apply SCLS to model a newly discovered ammonium transporter. This transporter is believed to play a fundamental role for plant mineral acquisition, which takes place in the arbuscular mycorrhiza, the most wide-spread plant-fungus symbiosis on earth. Due to its potential application in agriculture this kind of symbiosis is one of the main focuses of the BioBITs project. In our experiments the passage of NH3 / NH4+ from the fungus to the plant has been dissected in known and hypothetical mechanisms; with the model so far we have been able to simulate the behaviour of the system under different conditions. Our simulations confirmed some of the latest experimental results about the LjAMT2;2 transporter. The initial simulation results of the modelling of the symbiosis process are promising and indicate new directions for biological investigations.