cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evaluation du risque systémique sur les entreprises cotées à la bourse des valeurs de Casablanca
Creators: name: KRAMI, Rachid
name: EL GHARBAOUI, Mohammed
Publisher: name: Zenodo
Year: 2023
Subjects: Risques systémiques ; Conditional Value at Risk (CoVaR) ; Bourse de Casablanca ; pandémie de la Covid-19 ; gestion des risques financiers.

description: Cette étude se situe dans le contexte des crises financières mondiales, mettant en avant l'importance cruciale d'évaluer les risques systémiques dans les marchés financiers, en se focalisant spécifiquement sur la Bourse de Casablanca (BVC). L'analyse porte sur 66 entreprises cotées, réparties dans divers secteurs tels que la finance, l'industrie, et les services aux consommateurs. L'objectif est d'appliquer la méthode du "Conditional Value at Risk" (CoVaR) pour examiner les dynamiques prépandémie et pendant la pandémie de la Covid-19.

Les résultats révèlent des rendements négatifs généralisés pendant la pandémie, exception faite du secteur des services aux consommateurs. Parallèlement, une augmentation globale du risque systémique est observée, mettant en lumière les vulnérabilités accrues du système financier marocain pendant la crise. Des exceptions notables comprennent une diminution du risque systémique dans le secteur des matériaux de base.

Ces conclusions revêtent une importance significative pour les acteurs du marché financier, les régulateurs et les investisseurs, soulignant impérativement la nécessité de mettre en place des mécanismes de gestion des risques plus robustes. Cette étude approfondit la compréhension du risque systémique à la BVC pendant la pandémie, offrant des perspectives pour des recherches futures sur la gestion proactive des risques dans un contexte financier en constante évolution.
Direct Observation of Quantum Coherence in Single-Molecule Magnets
Creators: name: Schlegel, C.
name: van Slageren, J.
name: Manoli, M.
name: Brechin, E. K.
name: Dressel, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Direct evidence of quantum coherence in a single-molecule magnet in frozen solution is reported with coherence times as long as T2 = 630 ns. We can strongly increase the coherence time by modifying the matrix in which the single-molecule magnets are embedded. The electron spins are coupled to the proton nuclear spins of both the molecule itself and interestingly, also to those of the solvent. The clear observation of Rabi oscillations indicates that we can manipulate the spin coherently, an essential prerequisite for performing quantum computations.
description: 5 Pages, 4 Figures, final version published in PRL
Triggering Mechanism for the Filament Eruption on 2005 September 13 in Active Region NOAA 10808
Creators: name: Nagashima, Kaori
name: Isobe, Hiroaki
name: Yokoyama, Takaaki
name: Ishii, Takako T.
name: Okamoto, Takenori J.
name: Shibata, Kazunari
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: On 2005 September 13 a filament eruption accompanied by a halo CME occurred in the most flare-productive active region NOAA 10808 in Solar Cycle 23. Using multi-wavelength observations before the filament eruption on Sep. 13th, we investigate the processes leading to the catastrophic eruption. We find that the filament slowly ascended at a speed of 0.1km/s over two days before the eruption. During slow ascending, many small flares were observed close to the footpoints of the filament, where new magnetic elements were emerging. On the basis of the observational facts we discuss the triggering mechanism leading to the filament eruption. We suggest the process toward the eruption as follows: First, a series of small flares played a role in changing the topology of the loops overlying the filament. Second, the small flares gradually changed the equilibrium state of the filament and caused the filament to ascend slowly over two days. Finally, a C2.9 flare that occurred when the filament was close to the critical point for loss of equilibrium directly led to the catastrophic filament eruption right after itself.
description: 31 pages, 15 figures, 2 tables, accepted for publication in ApJ
First-Principles Prediction of Two-Dimensional B3C2P3 and B2C4P2: Structural Stability, Fundamental Properties, and Renewable Energy Applications
Creators: name: Kistanov, Andrey A.
name: Shcherbinin, Stepan A.
name: Ustiuzhanina, Svetlana V.
name: Huttula, Marko
name: Cao, Wei
name: Nikitenko, Vladimir R.
name: Prezhdo, Oleg V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The existence of two novel hybrid two-dimensional (2D) monolayers, 2D B3C2P3 and 2D B2C4P2, has been predicted based on the density functional theory calculations. It has been shown that these materials possess structural and thermodynamic stability. 2D B3C2P3 is a moderate band gap semiconductor, while 2D B2C4P2 is a zero band gap semiconductor. It has also been shown that 2D B3C2P3 has a highly tunable band gap under the effect of strain and substrate engineering. Moreover, 2D B3C2P3 produces low barriers for dissociation of water and hydrogen molecules on its surface, and shows fast recovery after desorption of the molecules. The novel materials can be fabricated by carbon doping of boron phosphide, and directly by arc discharge and laser ablation and vaporization. Applications of 2D B3C2P3 in renewable energy and straintronic nanodevices have been proposed.
Lacetas Karsch 1890
Creators: name: Sanborn, Allen F.
name: Marshall, David C.
name: Moulds, Maxwell S.
name: Puissant, Stéphane
name: Simon, Chris
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Lacetas

description: The Classification of Lacetas, Iruana and Related African Genera
In the genetic tree (Fig. 4), Lacetas was well separated from Hemidictya and fell closer to Tettigomyia Amyot & Audinet-Serville, 1843, the type genus of subfamily Tettigomyinae. This association is confirmed by our character tabulation (Table 3), which shows no clear conflict with the characters of that subfamily, and we thereby remove Lacetas (and consequently also Lacetasini) from synonymy with Hemidictyini and place it in subfamily Tettigomyiinae as currently classified.
Ruschel & Campos (2019) found that the African genus Iruana grouped with Lacetas and Hemidictya in their tree and that the African genera Bafutalna Boulard, 1993 and Murphyalna Boulard, 2012 were closely allied based on morphology, so these genera were also moved to Hemidictyini in their list of included genera. The date priority of Hemidictyini led them to synonymize Lacetasini with Hemidictyini, an action that we have reversed above. Hemidictya possesses character states associated more with the Tibicininae as outlined above, while all of the African genera possess a non-retractable uncus, partially fused CuP and 1A in the forewing, and hind wing RP and M veins fused at the base, distinguishing them as members of the Tettigomyiinae (Marshall et al. 2018). These morphological characters support the close association of Iruana, Bafutalna, and Murphyalna with Lacetasini (Ruschel & Campos 2019, Figs. 11–12) and not with Hemidictya.
description: Published as part of Sanborn, Allen F., Marshall, David C., Moulds, Maxwell S., Puissant, Stéphane & Simon, Chris, 2020, Redefinition of the cicada tribe Hemidictyini Distant, 1905, status of the tribe Iruanini Boulard, 1993 rev. stat., and the establishment of Hovanini n. tribe and Sapantangini n. tribe (Hemiptera: Cicadidae), pp. 133-155 in Zootaxa 4747 (1) on pages 147-148, DOI: 10.11646/zootaxa.4747.1.5, http://zenodo.org/record/3693495
Universality in the diffusion of knots
Creators: name: Kanaeda, Naoko
name: Deguchi, Tetsuo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We have evaluated a universal ratio between diffusion constants of the ring polymer with a given knot $K$ and a linear polymer with the same molecular weight in solution through the Brownian dynamics under hydrodynamic interaction. The ratio is found to be constant with respect to the number of monomers, $N$, and hence the estimate at some $N$ should be valid practically over a wide range of $N$ for various polymer models. Interestingly, the ratio is determined by the average crossing number ($N_{AC}$) of an ideal conformation of knotted curve $K$, i.e. that of the ideal knot. The $N_{AC}$ of ideal knots should therefore be fundamental in the dynamics of knots.
description: 8 pages, 14 figures
Bayesian Time Delay Interferometry
Creators: name: Page, Jessica
name: Littenberg, Tyson
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Laser frequency noise (LFN) is the dominant source of noise expected in the Laser Interferometer Space Antenna (LISA) mission, at $\sim$7 orders of magnitude greater than the typical signal expected from gravitational waves (GWs). Time-delay interferometry (TDI) suppresses LFN to an acceptable level by linearly combining measurements from individual spacecraft delayed by durations that correspond to their relative separations. Knowledge of the delay durations is crucial for TDI effectiveness. The work reported here extends upon previous studies using data-driven methods for inferring the delays during the post-processing of raw phasemeter data, also known as TDI ranging (TDIR). Our TDIR analysis uses Bayesian methods designed to ultimately be included in the LISA data model as part of a "Global Fit" analysis pipeline. Including TDIR as part of the Global Fit produces GW inferences which are marginalized over uncertainty in the spacecraft separations and allows for independent estimation of the spacecraft orbits. We demonstrate Markov Chain Monte Carlo (MCMC) inferences of the six time-independent delays required in the rigidly rotating approximation of the spacecraft configuration (TDI 1.5) using simulated data. The MCMC uses fractional delay interpolation (FDI) to digitally delay the raw phase meter data, and we study the sensitivity of the analysis to the filter length. Varying levels of complexity in the noise covariance matrix are also examined. Delay estimations are found to result in LFN suppression well below the level of secondary noises and constraints on the armlengths to $\mathcal{O}(30)\ {\rm cm}$ over the ${\sim}2.5\ {\rm Gm}$ baseline.
description: 11 pages, 6 figures, accepted to Physical Review D. Minor revisions in text from initial submission
Reason, virtue and politics, David Hume and the classical republican tradition
Creators: name: Neville, Robert Charles
Publisher: name: University of British Columbia
Year: 2010

description: The relation between David Hume's political ideas and the formal philosophical structures of Book I of his Treatise is an area of long-standing difficulty in the world of Hume studies. Similarly, the relation between Hume's work as a whole and the general tradition of 18th century political writing has proven difficult to characterise. In particular, it has not been easy to find systematic connections between Hume's political writing and those of the classical republicans, the tradition of political discourse to which Hume's political works display the most obvious connections. In an effort to solve this difficulty, and in the absence of such connections, James Moore has argued that we ought to consider Hume as outside of the republican tradition, principally because he abandoned the central republican notion of virtue in his politics. This thesis argues that Moore is mistaken in this, and for two reasons. First, that he, with others, has misunderstood the nature of republican virtue. This virtue was not identical with political independence, as is widely supposed, but actually consisted of an ability to exercise disinterested reason in the public interest. Second, that Hume's philosophy, contrary to an almost universal opinion, made central the operation and protection of disinterested reason in the political process. The discovery of the centrality of a similar form of reason in both Hume and in the classial republican tradition allows the connections between the two to be seen with much great clarity. It will be shown, then, that the classical republican tradition was marked by a structure which made the exercise of reason the sine qua non of a stable republic. And it will be shown that a widely held view of Hume's philosophy is incorrect: Hume did believe that reason could influence both belief and the passions. In the Treatise Hume described how a very particular and important kind of reason, the natural consequence of his psychological and epistemological analysis, could overcome human passion and interest. Hume's described the formation and maintenance of civil society as the direct consequence of certain psychological facts. He saw the structures of government as external parts of a social reasoning process. They served to prevent inevitable failures in individual virtue from ruining civil society and to provide for the existence in society of individuals who could administer laws in freedom from self interest. Hume's psychology and epistemology can thus be seen to penetrate to the core of his political analysis. The kind of reason supported by Hume's philosophy shows deep affinities with that required by the classical republican tradition. A recognition of the importance of reason in Hume's political thought allows us to see more clearly the nature of his reaction to an ancient tradition of political discourse.
Klaus Müller, Slawisches im deutschen Wortschatz (bei Rücksicht auf Wörter aus den finnougrischen wie baltischen Sprachen). Lehn- und Fremdwörter aus einem Jahrtausen
Creators: name: Schaller, Helmut W.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 1 (1998)
Hovana Distant 1905
Creators: name: Sanborn, Allen F.
name: Marshall, David C.
name: Moulds, Maxwell S.
name: Puissant, Stéphane
name: Simon, Chris
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Hovana

description: The Classification of Hovana
Hovana (from the north-west of Madagascar) presents a more difficult problem, both because no genetic data are available and because it possesses a more unusual combination of characters (Tables 2 & 3). The reticulated forewing veins render one of the useful features inapplicable (forewing vein CuA1 division). The remaining characters support the classification of Hovana in Cicadinae, Tettigomyinae, and Tibicininae about equally (Tables 2 & 3). However, there are issues with the known Tibicininae being absent from equatorial and southern Africa or Madagascar (Sanborn 2013; Marshall et al. 2018), and the lack of fused hindwing RP+M and lack of a ventrobasal pocket of the aedeagus suggest that Hovana does not belong in the Tibicininae. Similarly, a retractable uncus is an important genitalic structure found in Cicadinae that is lacking in Hovana. Although there are some contradictory structures in Hovana and other Tettigomyiinae, the long, non-retractable uncus and the turned–back rim of the timbal cavity suggest an affiliation with Tettigomyiinae. Furthermore, one tettigomyiine tribe (Iruanini rev. stat.) is noted to have “distal shoulders developed but fused as one due to apical narrowing of the pygofer” (Marshall et al., 2018, p. 49), and we speculate that the broad dorsal beak of Hovana could represent a continuation of that trend. Because Hovana does not fall within any described Tettigomyiinae tribe, and appears incompatible with other tribes elsewhere, Hovanini n. tribe is proposed here with the type genus Hovana Distant, 1905g.
description: Published as part of Sanborn, Allen F., Marshall, David C., Moulds, Maxwell S., Puissant, Stéphane & Simon, Chris, 2020, Redefinition of the cicada tribe Hemidictyini Distant, 1905, status of the tribe Iruanini Boulard, 1993 rev. stat., and the establishment of Hovanini n. tribe and Sapantangini n. tribe (Hemiptera: Cicadidae), pp. 133-155 in Zootaxa 4747 (1) on page 148, DOI: 10.11646/zootaxa.4747.1.5, http://zenodo.org/record/3693495
Confidence Level and Sensitivity Limits in High Contrast Imaging
Creators: name: Marois, C.
name: Lafreniere, D.
name: Macintosh, B.
name: Doyon, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In long adaptive optics corrected exposures, exoplanet detections are currently limited by speckle noise originating from the telescope and instrument optics, and it is expected that such noise will also limit future high-contrast imaging instruments for both ground and space-based telescopes. Previous theoretical analysis have shown that the time intensity variations of a single speckle follows a modified Rician. It is first demonstrated here that for a circular pupil this temporal intensity distribution also represents the speckle spatial intensity distribution at a fix separation from the point spread function center; this fact is demonstrated using numerical simulations for coronagraphic and non-coronagraphic data. The real statistical distribution of the noise needs to be taken into account explicitly when selecting a detection threshold appropriate for some desired confidence level. In this paper, a technique is described to obtain the pixel intensity distribution of an image and its corresponding confidence level as a function of the detection threshold. Using numerical simulations, it is shown that in the presence of speckles noise, a detection threshold up to three times higher is required to obtain a confidence level equivalent to that at 5sigma for Gaussian noise. The technique is then tested using TRIDENT CFHT and angular differential imaging NIRI Gemini adaptive optics data. It is found that the angular differential imaging technique produces quasi-Gaussian residuals, a remarkable result compared to classical adaptive optic imaging. A power-law is finally derived to predict the 1-3*10^-7 confidence level detection threshold when averaging a partially correlated non-Gaussian noise.
description: 29 pages, 13 figures, accepted to ApJ
ABET Accreditation: A Way Forward for PDC Education
Creators: name: Aly, Sherif G.
name: Harmanani, Haidar
name: Raj, Rajendra K.
name: Sharafeddine, Sanaa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: With parallel and distributed computing (PDC) now wide-spread, modern computing programs must incorporate PDC within the curriculum. ACM and IEEE Computer Society's Computer Science curricular guidelines have recommended exposure to PDC concepts since 2013. More recently, a variety of initiatives have made PDC curricular content, lectures, and labs freely available for undergraduate computer science programs. Despite these efforts, progress in ensuring computer science students graduate with sufficient PDC exposure has been uneven. This paper discusses the impact of ABET's revised criteria that have required exposure to PDC to achieve accreditation for computer science programs since 2018. The authors reviewed 20 top ABET-accredited computer science programs and analyzed how they covered the required PDC components in their curricula. Using their own institutions as case studies, the authors examine in detail how three different ABET-accredited computer science programs covered PDC using different approaches, yet meeting the PDC requirements of these ABET criteria. The paper also shows how ACM/IEEE Computer Society curricular guidelines for computer engineering and software engineering programs, along with ABET accreditation criteria, can cover PDC.
Brachyrhynchus sulcicornis  1860
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae
Brachyrhynchus
Brachyrhynchus sulcicornis

description: Brachyrhynchus sulcicornis (Signoret), 1860
Mezira sulcicornis Signoret, 1861: 956. ST 3: Madagascar; NHMW. Brachyrhynchus sulcicornis Stål, 1865 (3): 33
Brachyrhynchus sulcicornis Kormilev & Froeschner, 1987: 120
Distr.: Madagascar;(Tamatave-forêt d‘ Alahakato, Vallée du Fanajanhira Ibaka, Vallèe d’ Haut Onilahy Imahabo, Vohemar, Ambodivoniho; forêt de l’ Ankarafantsika, Lokobe, Sandrangato: Hoberlandt, 1957). East Africa: Hoberlandt, 1957.
Ref.: Hoberlandt, 1957 (key,redescr.,fig.,distr.); Kormilev & Froeschner, 1987: 120 (cat.)
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on page 52, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
History and results of the Riga dynamo experiments
Creators: name: Gailitis, Agris
name: Gerbeth, Gunter
name: Gundrum, Thomas
name: Lielausis, Olgerts
name: Platacis, Ernests
name: Stefani, Frank
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: On 11 November 1999, a self-exciting magnetic eigenfield was detected for the first time in the Riga liquid sodium dynamo experiment. We report on the long history leading to this event, and on the subsequent experimental campaigns which provided a wealth of data on the kinematic and the saturated regime of this dynamo. The present state of the theoretical understanding of both regimes is delineated, and some comparisons with other laboratory dynamo experiments are made.
description: 8 pages, 5 figure, accepted for publication in Comptes Rendus Physique
Tramificación de la masa de agua superficial 396 (río Duero entre el arroyo Reguera y el arroyo Algodre, Zamora)
Creators: name: Díaz-Redondo, María
Publisher: name: Zenodo
Year: 2021

description: Documento en el que se describen los criterios seguidos para la división de la masa 396 en tramos hidromorfológicos y para la selección de los correspondientes subtramos de muestreo, de acuerdo al Protocolo de Caracterización Hidromorfológica de Masas de Agua de la Categoría Ríos M-R-HMF-2019, de 22 de abril de 2019.
description: This research was funded by the project DRAINAGE, CGL2017–83546–C3–R (MINECO/AEI/FEDER,UE), and it is specifically part of the assessments carried out under the coverage of the sub–project DRAINAGE–2–R (CGL2017–83546–C3–2–R).
How do developers discuss and support new programming languages in technical Q&A site? An empirical study of Go, Swift, and Rust in Stack Overflow
Creators: name: Chakraborty, Partha
name: Shahriyar, Rifat
name: Iqbal, Anindya
name: Uddin, Gias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: New programming languages (e.g., Swift, Go, Rust, etc.) are being introduced to provide a better opportunity for the developers to make software development robust and easy. At the early stage, a programming language is likely to have resource constraints that encourage the developers to seek help frequently from experienced peers active in QA sites such as Stack Overflow (SO). In this study, we have formally studied the discussions on three popular new languages introduced after the inception of SO (2008) and match those with the relevant activities in GitHub whenever appropriate. For that purpose, we have mined 4,17,82,536 questions and answers from SO and 7,846 issue information along with 6,60,965 repository information from GitHub. Initially, the development of new languages is relatively slow compared to mature languages (e.g., C, C++, Java). The expected outcome of this study is to reveal the difficulties and challenges faced by the developers working with these languages so that appropriate measures can be taken to expedite the generation of relevant resources. We have used the LDA method on SO's questions and answers to identify different topics of new languages. We have extracted several features of the answer pattern of the new languages from SO to study their characteristics. These attributes were used to identify difficult topics. We explored the background of developers who are contributing to these languages. We have created a model by combining Stack Overflow data and issues, repository, user data of GitHub. Finally, we have used that model to identify factors that affect language evolution. We believe that the outcome of our study is likely to help the owner/sponsor of these languages to design better features and documentation. It will also help the software developers or students to prepare themselves to work on these languages in an informed way.
description: Information and Software Technology
Probing Quantum Nonlinearities through Neutrino Oscillations
Creators: name: Ng, Wei Khim
name: Parwani, Rajesh R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate potential quantum nonlinear corrections to Dirac's equation through its sub-leading effect on neutrino oscillation probabilities. Working in the plane-wave approximation and in the $μ-τ$ sector, we explore various classes of nonlinearities, with or without an accompanying Lorentz violation. The parameters in our models are first delimited by current experimental data before they are used to estimate corrections to oscillation probabilities. We find that only a small subset of the considered nonlinearities have the potential to be relevant at higher energies and thus possibly detectable in future experiments. A falsifiable prediction of our models is an energy dependent effective mass-squared, generically involving fractional powers of the energy.
QUIC is not Quick Enough over Fast Internet
Creators: name: Zhang, Xumiao
name: Jin, Shuowei
name: He, Yi
name: Hassan, Ahmad
name: Mao, Z. Morley
name: Qian, Feng
name: Zhang, Zhi-Li
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: QUIC is expected to be a game-changer in improving web application performance. In this paper, we conduct a systematic examination of QUIC's performance over high-speed networks. We find that over fast Internet, the UDP+QUIC+HTTP/3 stack suffers a data rate reduction of up to 45.2% compared to the TCP+TLS+HTTP/2 counterpart. Moreover, the performance gap between QUIC and HTTP/2 grows as the underlying bandwidth increases. We observe this issue on lightweight data transfer clients and major web browsers (Chrome, Edge, Firefox, Opera), on different hosts (desktop, mobile), and over diverse networks (wired broadband, cellular). It affects not only file transfers, but also various applications such as video streaming (up to 9.8% video bitrate reduction) and web browsing. Through rigorous packet trace analysis and kernel- and user-space profiling, we identify the root cause to be high receiver-side processing overhead, in particular, excessive data packets and QUIC's user-space ACKs. We make concrete recommendations for mitigating the observed performance issues.
description: 10 pages, 16 figures
Formation OPENOPSE Jour 1 - : gestion des données de la recherche recherche, le contexte de la science ouverte ouverte. 26 octobre 2021 , Dakar, Sénégal.
Creators: name: , Aventurier
name: , Fortuno
Publisher: name: Zenodo
Year: 2021
Subjects: science ouverte
open science
données de recherche
données scientifiques
research data
Senegal
Afrique de l'Ouest
West Africa
OPEN OPSE

description: Dans le cadre du projet FSPI Open OPSE, une formation sur la gestion et l’ouverture des données de recherche est organisée à destination des personnes rattachées aux organismes du consortium OPSE . Cette formation abordera les principes généraux de gestion des données de recherche : Qu’est-ce qu’une donnée de recherche ? Quel est son cycle de vie ? Quand et pourquoi valoriser les données dans le cadre de la science ouverte ? Quel est le cadre juridique du partage de données ? Comment trouver des données existantes ? Quel est le rôle des entrepôts de données ? Comment écrire un Plan de Gestion de Données dans le cadre d’un projet de recherche, d’une thèse ou d’une infrastructure ? voir https://lped.info/wikiObsSN/?FormSo. Ce support correspond à la première journée de formation jour 1 : Introduction à la Science Ouverte et aux données de recherche.
 Fondamentaux de la Science Ouverte : définitions de la Science Ouverte : publications, données, code, avantages, enjeux, outils, cas pratiques, cadre juridique.
 Intervenant.e.s : Pascal Aventurier (IRD), Sophie Fortuno (CIRAD) et Fatou Fofana (ISRA)
description: Financement : FSPI OPEN OPSE
Chaotic Inflation and Reheating in Generalized Scalar-Tensor Gravity
Creators: name: López, Matías
name: Otalora, Giovanni
name: Videla, Nelson
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the present work, we study slow-roll inflation in scalar-tensor gravity theories in the presence of both the non-minimal coupling between the scalar field and curvature, and the Galileon self-interaction of the scalar field. Furthermore, we give predictions for the duration of reheating as well as for the reheating temperature after inflation. After working out the expressions for the power spectra of scalar and tensor perturbations in the case of a general non-minimal coupling function that depends solely on the scalar field and a general scalar potential, we focus on the special cases of the power-law coupling function and chaotic quadratic inflation. Thus, under the slow-roll approximation we confront the predictions of the model with the current PLANCK constraints on the spectral index $n_s$ and the tensor-to-scalar ratio $r$ using the $n_{s}-r$ plane. We found that the combination of the non-minimal coupling and Galileon self-interaction effects allows us to obtain better results for $r$ than in the case in which each effect is considered separately. Particularly, we obtained that the predictions of the model are in agreement with the current observational bounds on $n_{s}$ and $r$ within the $95 \%$ C.L region and also slightly inside the $68 \%$ C.L region. Also, we investigate the oscillatory regime after the end of inflation by solving the full background equations, and then we determine the upper bound for the Galileon and non-minimal coupling parameters under the condition that the scalar field oscillates coherently during reheating. Finally, after approximating reheating by a constant equation of state, we derive the relations between the reheating duration, the temperature at the end of reheating, its equation of state, and the number of $e$-folds of inflation and then we relate them all to the inflationary observables.
description: 26 pages, 8 figures, 2 tables. Accepted version for publication in JCAP
Hartmut Boockmann, Ostpreußen und Westpreußen (Deutsche Geschichte im Osten Europas)
Creators: name: Nieß, Ulrich
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
A dynamical law for slow crack growth in polycarbonate films
Creators: name: Cortet, Pierre-Philippe
name: Vanel, Loic
name: Ciliberto, Sergio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We study experimentally the slow growth of a single crack in polycarbonate films submitted to uniaxial and constant imposed stress. For this visco-plastic material, we uncover a dynamical law that describes the dependence of the instantaneous crack velocity with experimental parameters. The law involves a Dugdale-Barenblatt static description of crack tip plastic zones associated to an Eyring's law and an empirical dependence with the crack length that may come from a residual elastic field.
The Outburst of the Blazar AO 0235+164 in 2006 December: Shock-in-Jet Interpretation
Creators: name: Hagen-Thorn, V. A.
name: Larionov, V. M.
name: Jorstad, S. G.
name: Arkharov, A. A.
name: Hagen-Thorn, E. I.
name: Efimova, N. V.
name: Larionova, L. V.
name: Marscher, A. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of polarimetric ($R$ band) and multicolor photometric ($BVRIJHK$) observations of the blazar AO 0235+16 during an outburst in 2006 December. The data reveal a short timescale of variability (several hours), which increases from optical to near-IR wavelengths; even shorter variations are detected in polarization. The flux density correlates with the degree of polarization, and at maximum degree of polarization the electric vector tends to align with the parsec-scale jet direction. We find that a variable component with a steady power-law spectral energy distribution and very high optical polarization (30-50%) is responsible for the variability. We interpret these properties of the blazar withina model of a transverse shock propagating down the jet. In this case a small change in the viewing angle of the jet, by $\lesssim 1^o$, and a decrease in the shocked plasma compression by a factor of $\sim$1.5 are sufficient to account for the variability.
description: 22 pages, 8 figures, accepted for ApJ
Dependence of the electronic structure of the EuS/InAs interface on the bonding configuration
Creators: name: Yu, Maituo
name: Moayedpour, Saeed
name: Yang, Shuyang
name: Dardzinski, Derek
name: Wu, Chunzhi
name: Pribiag, Vlad S.
name: Marom, Noa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Recently, the EuS/InAs interface has attracted attention for the possibility of inducing magnetic exchange correlations in a strong spin-orbit semiconductor, which could be useful for topological quantum devices. We use density functional theory (DFT) with a machine-learned Hubbard $U$ correction [npj Comput. Mater. 6, 180 (2020)] to elucidate the effect of the bonding configuration at the interface on the electronic structure. For all interface configurations considered here, we find that the EuS valence band maximum (VBM) lies below the InAs VBM. In addition, dispersed states emerge at the top of the InAs VBM at the interface, which do not exist in either material separately. These states are contributed mainly by the InAs layer adjacent to the interface. They are localized at the interface and may be attributed to charge transfer from the EuS to the InAs. The interface configuration affects the position of the EuS VBM with respect to the InAs VBM, as well as the dispersion of the interface state. For all interface configurations studied here, the induced magnetic moment in the InAs is small. This suggests that this interface, in its coherent form studied here, is not promising for inducing equilibrium magnetic properties in InAs.
Hamacantha (Vomerula) acerata Levi 1993
Creators: name: Ekins, Merrick
name: Baker, Soraya
name: Hooper, John N. A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Merliida
Hamacanthidae
Hamacantha
Hamacantha acerata

description: Hamacantha (Vomerula) acerata Lévi, 1993
Figs 1, 2, Tables 1, 2
Hamacantha acerata Lévi, 1993: 36–37, Fig. 13A
Material examined: Holotype MNHN DCL 3594
Description: The skeletal structure was as described by Lévi (1993) so the original description is translated in full here (from the French). “ Description. Sponge attached to various small calcareous debris, light gray-white in colour, measuring 20/15/ 2 mm. The surface is reticulated. The superficial film, very thin, contains sigmanistres and some diancistres. The main skeleton consists of bundles of styles in groups of three, associated in thick or crisscross bundles. Some packets arrange themselves radially around grains of sand.” The spicules of the holotype were, however, examined in this study and measurements of spicules are included in Table 1 and compared to the original description of Lévi as well as another closely related species H. (V.) umisachii Ise, Woo, Tan & Fujita, 2019 from Japan and a new species Hamacantha (Vomerula) novacula sp. nov. from Australia.
Remarks: Hamacantha (V.) acerata Lévi, 1993 is very similar to H. (V.) umisachii differing only in the shape of the diancistra and the cyrtancistra-like diancistra, which Lévi (1993) referred to as sigmancistras. Lévi’s species also has smaller sigmas and slightly larger but overlapping style lengths than H. (V.) umisachii (Tables 1 & 2). Interestingly, when H. (V.) umisachii was initially described by Ise et al. (2019) it was not compared to H. (V.) acerata. The smaller category of diancistra of H. acerata was also overlooked in Table 2 by Castello-Branco & Hajdu (2018) The recovery of more specimens in the future and their molecular sequencing may confirm whether these two nominal species are conspecific. Hamacantha (V.) carteri Topsent, 1904 also has a similar spicule composition as H. (V.) umisachii but with more significantly different spicule sizes (Table 2). As well as H. (V.) acerata, H. (V.) umisachii and H. (V.) mamoi Ise, Woo, Tan & Fujita, 2019, cyrtancistra-like diancistra have also been reported from H. (V.) jeanvaceleti Castello-Branco & Hajdu, 2018, H. (V.) klausruetzleri Castello-Branco & Hajdu, 2018, H. (Zygherpe) desmacelloides Hajdu, Hooker & Willenz, 2015.
description: Published as part of Ekins, Merrick, Baker, Soraya & Hooper, John N. A., 2023, First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species, pp. 382-400 in Zootaxa 5318 (3) on pages 383-384, DOI: 10.11646/zootaxa.5318.3.4, http://zenodo.org/record/8166946
A singlet-triplet hole-spin qubit in MOS silicon
Creators: name: Liles, S. D.
name: Halverson, D. J.
name: Wang, Z.
name: Shamim, A.
name: Eggli, R. S.
name: Jin, I. K.
name: Hillier, J.
name: Kumar, K.
name: Vorreiter, I.
name: Rendell, M.
name: Huang, J. H.
name: Escott, C. C.
name: Hudson, F. E.
name: Lim, W. H.
name: Culcer, D.
name: Dzurak, A. S.
name: Hamilton, A. R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Holes in silicon quantum dots are promising for spin qubit applications due to the strong intrinsic spin-orbit coupling. The spin-orbit coupling produces complex hole-spin dynamics, providing opportunities to further optimize spin qubits. Here, we demonstrate a singlet-triplet qubit using hole states in a planar metal-oxide-semiconductor double quantum dot. We observe rapid qubit control with singlet-triplet oscillations up to 400 MHz. The qubit exhibits promising coherence, with a maximum dephasing time of 600 ns, which is enhanced to 1.3 us using refocusing techniques. We investigate the magnetic field anisotropy of the eigenstates, and determine a magnetic field orientation to improve the qubit initialisation fidelity. These results present a step forward for spin qubit technology, by implementing a high quality singlet-triplet hole-spin qubit in planar architecture suitable for scaling up to 2D arrays of coupled qubits.
Two-dimensional molecular para-hydrogen and ortho-deuterium at zero temperature
Creators: name: Cazorla, C.
name: Boronat, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study molecular para-hydrogen (p-${\rm H_{2}}$) and ortho-deuterium (o-${\rm D_{2}}$) in two dimensions and in the limit of zero temperature by means of the diffusion Monte Carlo method. We report energetic and structural properties of both systems like the total and kinetic energy per particle, radial pair distribution function, and Lindemann's ratio in the low pressure regime. By comparing the total energy per particle as a function of the density in liquid and solid p-${\rm H_{2}}$, we show that molecular para-hydrogen, and also ortho-deuterium, remain solid at zero temperature. Interestingly, we assess the quality of three different symmetrized trial wave functions, based on the Nosanow-Jastrow model, in the p-${\rm H_{2}}$ solid film at the variational level. In particular, we analyze a new type of symmetrized trial wave function which has been used very recently to describe solid $^{4}$He and found that also characterizes hydrogen satisfactorily. With this wave function, we show that the one-body density matrix $\varrho_{1} (r)$ of solid p-${\rm H_{2}}$ possesses off-diagonal long range order, with a condensate fraction that increases sizably in the negative pressure regime.
description: 11 pages, 9 figures
ASASSN-15hy: an under-luminous, red 03fg-like type Ia supernova
Creators: name: Lu, J.
name: Ashall, C.
name: Hsiao, E. Y.
name: Hoeflich, P.
name: Galbany, L.
name: Baron, E.
name: Phillips, M. M.
name: Contreras, C.
name: Burns, C. R.
name: Suntzeff, N. B.
name: Stritzinger, M. D.
name: Anais, J.
name: Anderson, J. P.
name: Brown, P. J.
name: Busta, L.
name: Castellón, S.
name: Davis, S.
name: Diamond, T.
name: Falco, E.
name: Gonzalez, C.
name: Hamuy, M.
name: Holmbo, S.
name: Holoien, T. W. -S.
name: Krisciunas, K.
name: Kirshner, R. P.
name: Kumar, S.
name: Kuncarayakti, H.
name: Marion, G. H.
name: Morrell, N.
name: Persson, S. E.
name: Piro, A. L.
name: Prieto, J. L.
name: Sand, D. J.
name: Shahbandeh, M.
name: Shappee, B. J.
name: Taddia, F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present photometric and spectroscopic observations of the 03fg-like type Ia supernova (SN Ia) ASASSN-15hy from the ultraviolet (UV) to the near-infrared (NIR). ASASSN-15hy shares many of the hallmark characteristics of 03fg-like SNe Ia, previously referred to as "super-Chandrasekhar" SNe Ia. It is bright in the UV and NIR, lacks a clear i-band secondary maximum, shows a strong and persistent C II feature, and has a low Si II $λ$6355 velocity. However, some of its properties are also extreme among the subgroup. ASASSN-15hy is under-luminous (M$_{B,peak}=-19.14^{+0.11}_{-0.16}$ mag), red ($(B-V)_{Bmax}=0.18^{+0.01}_{-0.03}$ mag), yet slowly declining ($Δ{m_{15}}(B)=0.72 \pm 0.04$ mag). It has the most delayed onset of the i-band maximum of any 03fg-like SN. ASASSN-15hy lacks the prominent H-band break emission feature that is typically present during the first month past maximum in normal SNe Ia. Such events may be a potential problem for high-redshift SN Ia cosmology. ASASSN-15hy may be explained in the context of an explosion of a degenerate core inside a non-degenerate envelope. The explosion impacting the non-degenerate envelope with a large mass provides additional luminosity and low ejecta velocities. An initial deflagration burning phase is critical in reproducing the low $^{56}$Ni mass and luminosity, while the large core mass is essential in providing the large diffusion time scales required to produce the broad light curves. The model consists of a rapidly rotating 1.47 $M_{\odot}$ degenerate core and a 0.8 $M_{\odot}$ non-degenerate envelope. This "deflagration core-degenerate" scenario may result from the merger between a white dwarf and the degenerate core of an asymptotic giant branch star.
description: 41 pages, 21 figures, accepted to ApJ
Andreas Fingernagel, Martin Roland, Mitteleuropäische Schulen l (ca. 1250—1350). Text und Tafel- u. Registerband
Creators: name: Hlaváček, Ivan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1998

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 47 Nr. 1 (1998)
Crustal velocity and strain rate fields in the Balearic Islands based on continuous GPS time series from the XGAIB network (2010-2013)
Creators: name: Alzola, A. Sánchez
name: Sánchez, C.
name: Giménez, J.
name: García, P. Alfaro
name: Gelabert, B.
name: Borque-Arancón, M. J.
name: Gil, A. J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: In this paper, we present a first estimation, using the GIPSY-OASIS software, of the crustal velocity and strain rate fields in the Balearic Islands (Spain), based on continuous GPS observations from the XGAIB network spanning the period 2010-2013. The XGAIB network consists of nine permanent, widely distributed stations that have operated continuously since 2010. In this paper, we describe the XGAIB network and the CGPS data processing and present our principle results in terms of the position time series and velocities of all of the sites, which were observed for more than three and a half years. In addition, strain tensors were estimated from the velocity field to obtain the first realistic crustal deformation model of the archipelago. The strains exhibit gradual variation across the Balearic Islands, from WNW-ESE extension in the southwest (Ibiza and Formentera) to NW-SE compression in the northeast (Menorca). These results constitute an advance in our knowledge of the tectonics of the western Mediterranean region.
Jiří Kořalka, Tschechen im Habsburgerreich und in Europa 1815-1914
Creators: name: Hoffmann, Roland J.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 1 (1995)
Thematic Limitations in Academic Publishing: A Scenario in Humanities Academic Development by Sun
Creators: name: Zhang, Hui
Publisher: name: Zenodo
Year: 2023

description: A Scenario in Humanities Academic Development explores the challenges that humanities PhD candidates faces in the context of prevailing thematic preferences in academic publishing.

Sun's research, distinct from the dominant trend in artificial intelligence within social science academia, encountered resistance from journal editors who emphasized the need to align with current societal interests for publication.

This situation is common in the academic publishing environment.

How could researchers contribute to their research balance with their interests in the hot topic?
Preußisches Wörterbuch. Bd. 4. Lfg. 2-7
Creators: name: Scheuermann, Ulrich
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1996

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 45 Nr. 3 (1996)
Conditioning on an extreme component: Model consistency with regular variation on cones
Creators: name: Das, Bikramjit
name: Resnick, Sidney I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Multivariate extreme value theory assumes a multivariate domain of attraction condition for the distribution of a random vector. This necessitates that each component satisfies a marginal domain of attraction condition. An approximation of the joint distribution of a random vector obtained by conditioning on one of the components being extreme was developed by Heffernan and Tawn [12] and further studied by Heffernan and Resnick [11]. These papers left unresolved the consistency of different models obtained by conditioning on different components being extreme and we here provide clarification of this issue. We also clarify the relationship between these conditional distributions, multivariate extreme value theory and standard regular variation on cones of the form $[0,\infty]\times(0,\infty]$.
description: Published in at http://dx.doi.org/10.3150/10-BEJ271 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)