cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Semi-Automatic Alerts and Notifications for Emergency Services based on Cross-Platform Social Media Data - Evaluation of a Prototype
Creators: name: Reuter, Christian
name: Amelunxen, Christoph
name: Moi, Matthias
Publisher: name: Gesellschaft für Informatik e.V
Year: 2023

description: The convergence of social networking and mobile media technology is shifting the way how people communicate and gain or share information. People are using social media to a greater extent, also in emergency situations. During disasters throughout the world, such as the 2010 Haiti earthquake, the 2013 European floods, or the terror attacks 2015 in Paris and 2016 in Brussels, this has been illustrated again. Often information about disasters even finds its way faster to social media than it reaches regular news companies and emergency services. However, approaches for processing and analyzing the vast quantities of data produced have even more potential. Yet many emergency services still have not found a way to put this potential to an effective use. Within our project EmerGent we are developing a system to process and analyse information from social media particularly tailored for the specific needs of emergency services. The aim is to transform the high volume of noisy data into a low volume of rich content that is useful to emergency personnel. In the first part of this paper we present our approach from a user interface perspective. The second part deals with the evaluation of the approach and the derivation of future potentials of the approach.
On the p-regularized trust region subproblem
Creators: name: Hsia, Yong
name: Sheu, Ruey-Lin
name: Yuan, Ya-xiang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49K30, 90C46, 90C26

description: The $p$-regularized subproblem (p-RS) is a regularisation technique in computing a Newton-like step for unconstrained optimization, which globally minimizes a local quadratic approximation of the objective function while incorporating with a weighted regularisation term $\fracσ{p} \|x\|^p$. The global solution of the $p$-regularized subproblem for $p=3$, also known as the cubic regularization, has been characterized in literature. In this paper, we resolve both the global and the local non-global minimizers of (p-RS) for $p>2$ with necessary and sufficient optimality conditions. Moreover, we prove a parallel result of Mart\'ınez \cite{Mar} that the (p-RS) for $p>2$, analogous to the trust region subproblem, can have at most one local non-global minimizer. When the (p-RS) is subject to a fixed number $m$ additional linear inequality constraints, we show that the uniqueness of the local solution of the (p-RS) (if exists at all), especially for $p=4$, can be applied to solve such an extension in polynomial time.
description: 19pages
Ring Pearcey vortex beam dynamics through atmospheric turbulence
Creators: name: Singh, Shakti
name: Mishra, Sanjay Kumar
name: Mishra, Akhilesh Kumar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The subject area of free space optical communication with optical beam carrying orbital angular momentum has attracted a great deal of research attention since last two decades. Efforts to understand, model and execute communication links through turbulent atmosphere with OAM beams have gained particular importance. In this regard, different types of shape preserving beams, which can withstand turbulences of varying strengths, have been proposed and studied. In this paper, we present a numerical investigation of the propagation characteristics of ring Pearcey vortex beam through turbulent atmosphere. The study details on both moderate as well as strong atmospheric turbulences. Modified von Karman model has been relied on to model random phase screen. In moderate turbulence, the ring PVB preserved its singularity. In strong turbulence, the ring PVB preserved its singularity for short propagation distances but lost its singularity at longer propagation distances. We found that upon increasing the value of topological charge, aperture averaged scintillation index increases. We calculated the aperture averaged SI for different truncation factors and noticed that the ring PVB with a truncation factor 0.1 performed better in stronger turbulence. In moderate turbulence, the aperture averaged SI performed better for shorter propagation distances and relatively larger truncation factors. Further, we calculated the aperture averaged SI for spatially chirped ring PVB, and it has been found that aperture averaged SI improved largely for negatively chirped ring PVB. Furthermore, on comparing the aperture averaged SI of ring PVB and ring Airy vortex beam, it has been noticed that in strong turbulence ring PVB exhibited better aperture averaged SI. Additionally, we have calculated the beam wander for ring PVB and ring AVB and found that ring PVB demonstrates better beam wander.
description: 14 pages, 11 figures
Relación del consumo máximo de oxígeno con el estado de peso corporal y el consumo de bebidas azucaradas en escolares de 10-12 años de edad
Creators: name: Becerra Magallón, Francisco Antonio
Publisher: name: Universidad Autónoma de Baja California, Tijuana.
Year: 2023
Subjects: subject: Deportes||Tesis y disertaciones académicas||lemb
subject: GV361 B42 2022

description: Introducción. Actualmente, el sobrepeso (SP) y la Obesidad (O) infantil son unos de los problemas de salud pública mundial más importantes del siglo XXI que puede presentarse tanto en países desarrollados como en desarrollo e indistintamente en los estratos socioeconómicos altos, medios o bajos. Las bebidas que contienen sacarosa o jarabe de maíz alto en Fructosa, se asocian con un mayor riesgo de aumentar de peso.
title: Enseigner l'histoire selon le Plan d'études romand ?
title: Analyse conceptuelle du PER et de la méthodologie officielle dans le canton de Vaud pour les années 9 à 11 HarmoS
titleType: Subtitle
Creators: name: Zeller Bersier, Susanne
name: Chevalier, Morgane
Publisher: name: Unknown
Year: 0
Subjects: subject: Histoire (discipline)
subject: PER
subject: Moyen d'enseignement
subject: Compétences
subject: Curriculum
subject: Objectifs

description: A la rentrée scolaire 2012, deux nouveaux outils interviendront dans le quotidien des enseignants d’histoire : le plan d’études romand et les manuels d’histoire Nathan, étiquetés par le département général de l’enseignement obligatoire du canton de Vaud et amenés à devenir la méthodologique vaudoise officielle pour l’enseignement de cette discipline au secondaire I. Comme nous souhaitons maîtriser au mieux ces nouveaux outils pour notre pratique professionnelle à venir, nous nous sommes efforcées de les analyser sous le regard des sciences de l’éducation qui nous offre un cadre théorique précieux pour la lecture des ces deux instruments de l’enseignant. Nous nous sommes intéressées à leurs contenus et à leur articulation d’un point de vue du curriculum, des compétences, des objectifs d’apprentissage et des savoirs. Chacun de ces termes étant définis de manière diverse et multiple, nous avons dû, dans un premier temps opérer des choix parmi les nombreuses définitions, afin de retenir, pour chacun d’entre eux la définition, qui nous permettrait d’analyser le PER et la méthodologie dans le contexte de l’enseignement vaudois au secondaire I et des sciences de l’éducation. Le cadre théorique posé, l’analyse de ces deux instruments de travail s’est révélée surprenante en plusieurs points. Premièrement, par le décalage entre les termes employés dans ces deux outils et les définitions retenues. Deuxièmement, par l’absence de méthode proposée par la méthodologie. Troisièmement, par le manque de guidage proposé aux enseignants, en ce qui concerne le PER, et aux élèves, en ce qui concerne la méthode. Cependant, l’analyse révèle également des points essentiels, comme une clé de lecture du plan d’études romand ou la mise en évidences des compétences travaillées dans les manuels par une observation attentive des exercices proposés.
description: Mémoire professionnel, Master en enseignement pour le degré secondaire I
GTrans: Grouping and Fusing Transformer Layers for Neural Machine Translation
Creators: name: Yang, Jian
name: Yin, Yuwei
name: Yang, Liqun
name: Ma, Shuming
name: Huang, Haoyang
name: Zhang, Dongdong
name: Wei, Furu
name: Li, Zhoujun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Transformer structure, stacked by a sequence of encoder and decoder network layers, achieves significant development in neural machine translation. However, vanilla Transformer mainly exploits the top-layer representation, assuming the lower layers provide trivial or redundant information and thus ignoring the bottom-layer feature that is potentially valuable. In this work, we propose the Group-Transformer model (GTrans) that flexibly divides multi-layer representations of both encoder and decoder into different groups and then fuses these group features to generate target words. To corroborate the effectiveness of the proposed method, extensive experiments and analytic experiments are conducted on three bilingual translation benchmarks and two multilingual translation tasks, including the IWLST-14, IWLST-17, LDC, WMT-14 and OPUS-100 benchmark. Experimental and analytical results demonstrate that our model outperforms its Transformer counterparts by a consistent gain. Furthermore, it can be successfully scaled up to 60 encoder layers and 36 decoder layers.
description: Accepted in IEEE TASLP
title: Les percussions corporelles
title: une taxonomie pour guider les apprentissages
titleType: Subtitle
Creators: name: Gaillard, Ivan
Publisher: name: Unknown
Year: 0
Subjects: subject: Percussions corporelles
subject: Rythme
subject: Habiletés
subject: Compétences
subject: Taxonomie
subject: Apprentissage

description: Quoi de plus fondamental que d'utiliser son corps pour engendrer de la musique ? Chanter, produire des sons, tout cela est fondé, connu, éprouvé depuis des millénaires. L'aire des percussions corporelles a sans doute éclos en même temps que l'Homme. Pourtant cette matière sonore intrigue toujours autant, et un renouveau semble se produire : elle envahit peu à peu la scène musicale actuelle, de même que les salles de musique des établissements scolaires. Le corps fait office d'instrument : il est comme une caisse de résonance à timbres multiples, un peu comme une batterie. Si les mains font office de baguettes, le corps est comme un éventail de tambours, chaque partie du corps ayant son propre son. Cette discipline consiste ainsi à frapper sur différentes parties du corps comme les cuisses, le ventre, le thorax ou les mains pour interpréter des rythmes. Le timbre ou la qualité des sons dépend principalement de la position des mains et du tonus selon la partie du corps frappée. Faire des percussions corporelles implique le corps entier, le côté gauche comme le côté droit, le bas comme le haut, l'avant comme l'arrière. Les frappes peuvent être faites pour leur qualité sonore autant que pour leur qualité visuelle et esthétique : les percussions corporelles sont comme de la danse sonore. Cette recherche a pour but d'explorer le domaine des percussions corporelles à travers les aspects cognitifs, affectifs et psychomoteurs. La démarche a conduit à développer une classification des habiletés et des compétences concernées par cette discipline : une taxonomie des percussions corporelles. Un test diagnostique et des séquences d'enseignement ont permis d'éprouver cette taxonomie, de la confronter à la réalité de l'axe enseignement / apprentissage dans le cadre de cours de musique au secondaire I. Bienvenue dans l'univers du rythme !
description: Mémoire professionnel, Master en enseignement pour le degré secondaire I
Sparse Graph Learning from Spatiotemporal Time Series
Creators: name: Cini, Andrea
name: Zambon, Daniele
name: Alippi, Cesare
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Outstanding achievements of graph neural networks for spatiotemporal time series analysis show that relational constraints introduce an effective inductive bias into neural forecasting architectures. Often, however, the relational information characterizing the underlying data-generating process is unavailable and the practitioner is left with the problem of inferring from data which relational graph to use in the subsequent processing stages. We propose novel, principled - yet practical - probabilistic score-based methods that learn the relational dependencies as distributions over graphs while maximizing end-to-end the performance at task. The proposed graph learning framework is based on consolidated variance reduction techniques for Monte Carlo score-based gradient estimation, is theoretically grounded, and, as we show, effective in practice. In this paper, we focus on the time series forecasting problem and show that, by tailoring the gradient estimators to the graph learning problem, we are able to achieve state-of-the-art performance while controlling the sparsity of the learned graph and the computational scalability. We empirically assess the effectiveness of the proposed method on synthetic and real-world benchmarks, showing that the proposed solution can be used as a stand-alone graph identification procedure as well as a graph learning component of an end-to-end forecasting architecture.
description: Accepted for publication in JMLR
Efficient Adiabatic Rapid Passage in the Presence of Noise
Creators: name: Li, Kehui
name: Spierings, David C.
name: Steinberg, Aephraim M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Adiabatic Rapid Passage (ARP) is a powerful technique for efficient transfer of population between quantum states. In the lab, the efficiency of ARP is often limited by noise on either the energies of the states or the frequency of the driving field. We study ARP in the simple setting of a two-level system subject to sinusoidal fluctuations on the energy level separation by numerically solving the optical Bloch equations in the absence of damping. We investigate the dependence of the efficiency of population transfer on the frequency and amplitude of the perturbation, and find that it is predominantly affected by resonant coupling when the detuning matches the frequency of the noise. We present intuitive principles for when ARP becomes inefficient within this model, and provide a sufficient condition for the population transfer to be above an arbitrary threshold.
description: 7 pages, 8 figures
Supplementary Materials File 1 from Roost selection by synanthropic bats in rural Kenya: implications for human–wildlife conflict and zoonotic pathogen spillover
Creators: name: Jackson, Reilly T.
name: Webala, Paul W.
name: Ogola, Joseph G.
name: Lunn, Tamika J.
name: Forbes, Kristian M.
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Health Care
subject: Diseases
subject: Epidemiology

description: This file contains information to aid in understanding the statistical models used in this manuscript, as well as contextual photographic evidence of the close association between humans and synanthropic bats in our study system.
Central production of lepton-antilepton pairs and heavy quark composite states in hadron diffractive collisions at ultrahigh energies
Creators: name: Anisovich, V. V.
name: Matveev, M. A.
name: Nikonov, V. A.
name: Nyiri, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Central production of lepton-lepton pairs ($e^+e^-$ and $μ^+μ^-$) and heavy quark composite states (charmonia and bottomonia) in diffractive proton collisions (proton momenta transferred ${|\bf q_\perp}|\sim m/\ln s$) are studied at ultrahigh energies ($\ln{s}>>1$), where $σ_{tot}(pp^\pm)\sim\ln^N s$ with $1\la N\la 2$. The $pp^\pm$-rescattering corrections, which are not small, are calculated in terms of the $K$-matrix approach modified for ultrahigh energies. Two versions of hadron interactions are considered in detail: the growth (i) $σ_{tot}(pp^\pm)\sim\ln^2 s$, $σ_{inel}(pp^\pm)\sim\ln^2 s$ within the black disk mode and (ii) $σ_{tot}(pp^\pm)\sim\ln^2 s$, $σ_{inel}(pp^\pm)\sim\ln s$ within the resonant disk mode. The energy behavior of the diffractive production processes differs strongly for these modes, thus giving a possibility to distinguish between the versions of the ultrahigh energy interactions.
description: 10 pages. arXiv admin note: substantial text overlap with arXiv:1408.0692
The UV luminosity functions of Bright z>8 Galaxies: Determination from ~0.41 deg2 of HST Observations along ~sim 300 independent sightlines
Creators: name: Leethochawalit, Nicha
name: Roberts-Borsani, Guido
name: Morishita, Takahiro
name: Trenti, Michele
name: Treu, Tommaso
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We determine the bright end of the rest-frame UV luminosity function (UVLF) at $z=8-10$ by selecting bright $z\gtrsim 8$ photometric candidates from the largest systematic compilation of HST (pure-)parallel observations to date, the Super-Brightest-of-Reionizing-Galaxies (SuperBoRG) data set. The data set includes $\sim300$ independent sightlines from WFC3 observations, totalling $800-1300$ arcmin$^2$ (depending on redshift). We identify 31 $z\gtrsim8$ candidates via colour selection and photo-$z$ analysis with observed magnitude ($24.1< H_{160} <26.6$) and $1σ$ range probability of $58-95\%$ of being true high-z galaxies. Following detailed completeness and source recovery simulations, as well as modelling of interloper contamination, we derive rest-frame UVLFs at $z=8-10$ down to $M_{UV}\simeq-23$. We find that the bright end of the galaxy luminosity function can be described both by a Schechter and by a double power-law function, with our space-based large area determination showing some tentative discrepancies with the luminosity functions derived from ground-based observations at the same redshifts. We identify two possible explanations. The first is that the UVLF includes a substantial contribution from AGNs at magnitudes $M_{UV}<-22$. The UVLF we derive at $z=8$ is consistent with no evolution of the bright end from $z=6-7$ UVLFs that include AGNs. An alternative (and non-exclusive) possibility is that the dust content of the observed galaxies decreases with redshift, thereby countering the naturally expected decrease in the UV luminosity functions because of a decreased star formation rate with increasing redshift. Both scenarios raise interesting prospects to further understand galaxy formation in extreme objects during the epoch of reionisation.
description: 11 pages, 9 figures. Accepted for publication in MNRAS
Magneto-optical Kerr effect and magnetoelasticity in weak ferromagnetic RuF$_4$ monolayer
Creators: name: Wang, Na
name: Chen, Jun
name: Ding, Ning
name: Zhang, Huimin
name: Dong, Shuai
name: Wang, Shan-Shan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Considerable research interest has been attracted to noncollinear magnetic structures for their intriguing physics and promising applications. In this work, based on relativistic density functional theory, we reveal the interesting magnetic order and relevant properties in monolayer RuF$_4$, which can be exfoliated from its bulk phase. Although the spins on Ru ions are almost antiferromagnetically aligned between nearest-neighbors, weak ferromagnetism is generated because of the antisymmetric Dzyaloshinskii-Moriya interaction as well as the single-ion anisotropy. A prominent magneto-optical Kerr effect can be observed for this antiferromagnet, similar to those of regular strong ferromagnets. In addition, a uniaxial strain can induce a ferroelastic switching together with the in-plane rotation of spin direction, giving rise to a strong intrinsic magnetoelasticity. Our work not only suggests an alternative direction for two-dimensional magnetic materials, but also provides hints to future devices based on antiferromagnetic magnetoelastic or magneto-optical materials.
description: 7 pages, 5 figures
L'impact de la pédagogie de projet sur la motivation, le sens et le développement des compétences transversales
Creators: name: Genest, Océane
name: Pellaton, Céline
Publisher: name: Unknown
Year: 0
Subjects: subject: Pédagogie de projet
subject: sens
subject: motivation
subject: compétences transversales
subject: collaboration
subject: communication
subject: stratégies d’apprentissage
subject: pensée créatrice
subject: démarche réflexive

description: La démarche de projet est une méthode d’enseignement active qui promeut l’importance de l’apprentissage par l’expérience. Elle révolutionne les méthodes transmissives de la pédagogie traditionnelle en s’inscrivant davantage dans le courant socio-constructiviste. À travers ce mémoire, nous tentons d’observer en quoi la pédagogie de projet permettrait de solliciter la motivation des élèves et de donner plus de sens à leurs apprentissages. De plus, notre recherche se penche sur le potentiel développement de compétences transversales chez des élèves, à travers la démarche de projet. Nous nous sommes concentrées sur l’observation des compétences transversales que le PER (Plan d’Étude Romand) mentionne comme étant les capacités à développer chez des élèves au secondaire. À savoir : la communication, la collaboration, les stratégies d’apprentissage, la pensée créatrice et la démarche réflexive. L’étude s’est menée dans deux classes différentes (8VSG et OPTI), à travers des projets distincts : le montage d’un court-métrage, ainsi que la création et l’exposition d’oeuvres d’art portant sur le thème de la science-fiction. Ces deux projets nous ont permis de vérifier nos hypothèses de départ tout en les nuançant. En effet, si nous avons, de manière générale, observé que la pédagogie de projet suscite bel et bien la motivation des élèves, cette dernière relève particulièrement de facteurs extrinsèques. Nous relevons également que pour que les élèves trouvent du sens dans leurs apprentissages, il est crucial de définir des objectifs avec eux et de travailler sur leur perception de l’activité. Sans quoi nous constatons que cela peut péjorer l’importance donnée au sens. Enfin, nous remarquons que les compétences transversales développées par les élèves divergent d’une classe à l’autre, et ceci de par la nature différente des projets, de l’âge des élèves, de l’intérêt porté à la tâche, et du rôle des enseignant durant l’élaboration. Bonne lecture !
description: Mémoire professionnel, Master en enseignement pour le degré secondaire I
Initial-State Dependent Optimization of Controlled Gate Operations with Quantum Computer
Creators: name: Jang, Wonho
name: Terashi, Koji
name: Saito, Masahiko
name: Bauer, Christian W.
name: Nachman, Benjamin
name: Iiyama, Yutaro
name: Okubo, Ryunosuke
name: Sawada, Ryu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: There is no unique way to encode a quantum algorithm into a quantum circuit. With limited qubit counts, connectivity, and coherence times, a quantum circuit optimization is essential to make the best use of near-term quantum devices. We introduce a new circuit optimizer called AQCEL, which aims to remove redundant controlled operations from controlled gates, depending on initial states of the circuit. Especially, the AQCEL can remove unnecessary qubit controls from multi-controlled gates in polynomial computational resources, even when all the relevant qubits are entangled, by identifying zero-amplitude computational basis states using a quantum computer. As a benchmark, the AQCEL is deployed on a quantum algorithm designed to model final state radiation in high energy physics. For this benchmark, we have demonstrated that the AQCEL-optimized circuit can produce equivalent final states with much smaller number of gates. Moreover, when deploying AQCEL with a noisy intermediate scale quantum computer, it efficiently produces a quantum circuit that approximates the original circuit with high fidelity by truncating low-amplitude computational basis states below certain thresholds. Our technique is useful for a wide variety of quantum algorithms, opening up new possibilities to further simplify quantum circuits to be more effective for real devices.
description: 17 pages, 7 figures. arXiv admin note: substantial text overlap with arXiv:2102.10008
title: Analyse comparée entre le dessin d'enfant et le dessin d'adolescent
title: dans quelle mesure le dessin d'enfant peut-il servir de tremplin à la créativité de l'adolescent ?
titleType: Subtitle
Creators: name: Gollut, Véronique
name: Boucheteil, Marie
Publisher: name: Unknown
Year: 0
Subjects: subject: enfant
subject: adolescent
subject: dessin
subject: créativité
subject: réinterprétation
subject: inspiration

description: Mémoire professionnel, Master en enseignement pour le degré secondaire I
title: La place de la peur chez les élèves en situation de prise de parole en classe de secondaire I
title: regards croisés entre élèves et enseignants
titleType: Subtitle
Creators: name: Lacharme, Cécile
name: Laurens, Stéphane
Publisher: name: Unknown
Year: 0
Subjects: subject: Parole
subject: Peur
subject: Elèves
subject: Inconfort
subject: Erreur
subject: Jugement/évaluation

description: Le sujet de ce mémoire est né d’une discussion que nous avions eue à propos d’un constat : la résistance, la gêne éprouvée à prendre parfois la parole, à des degrés divers, lorsque l’on est apprenant au sein d’un groupe de personnes. Dans les prémices de notre réflexion, cette « gêne » était seulement une impression peu palpable. Au travers d’échanges, de réflexions, d’analyses, il nous est apparu que l’inconfort ressenti lors d’une prise de parole était, le plus souvent, lié à la peur. Dans le cadre de notre formation HEP et de nos stages en classe de secondaire 1, nous avons enquêté auprès des enseignants et d’élèves d’une classe, à l’aide de questionnaires visant à répondre à la question de recherche : en tant qu’apprenant, prendre la parole en classe engendre-t-il de la peur ? Si oui, quels sont les facteurs pouvant l’alimenter? Quels sont les facteurs minimisants mis en oeuvre ou qui pourraient l’être, de la part de l’élève et de celle de l’enseignant ?
description: Mémoire professionnel, Master en enseignement pour le degré secondaire I
Changing the type of superconductivity by magnetic and potential scattering
Creators: name: Kogan, V. G.
name: Prozorov, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: By evaluating the upper and thermodynamic critical fields, $H_{c2}$ and $H_c$, and their ratio $H_{c2}/H_c $ at arbitrary temperatures, we argue that situations are possible when a type-II material is transformed to type-I by adding magnetic impurities.
Connaissance, visibilité et utilisation de la médiation par les élèves du collège secondaire de Blonay
Creators: name: Gertsch, Jérôme
Publisher: name: Unknown
Year: 0
Subjects: subject: Médiation
subject: Aide
subject: Conflit
subject: Elèves
subject: Sollicitation
subject: Contact
subject: Affiche

description: Ce travail a pour but d’observer dans quelle mesure la médiation au secondaire I est efficace en terme de visibilité, c’est-à-dire si les élèves connaissent les médiateurs dans leur école et savent comment les contacter, s’ils connaissent leur rôle, et s’ils font appel à eux en cas de besoin. Après avoir fait passer un questionnaire à 96 élèves ainsi qu’un questionnaire aux deux médiateurs de l’établissement, les résultats de cette étude montre l’écart flagrant qu’il y a entre le dispositif mis en place dans un collège en particulier (celui de Blonay) et l’utilisation réelle qui en est faite par les élèves. En effet, si les élèves connaissent leurs médiateurs et le soutien que ces derniers peuvent leur apporter, il apparaît néanmoins que le contact direct entre les élèves et les médiateurs n’est pas du tout favorisé, puisque les premiers ne savent pas comment entrer en contact avec les seconds sans passer par une tierce personne. Une amélioration en terme de réseau doit donc absolument être apportée. Le présent mémoire propose des solutions toutes simples et néanmoins efficaces pour que la communication entre les élèves et leurs médiateurs soit facilitée, revalorisant ainsi la médiation et son utilité au sein de l’établissement concerné. L’auteur a créé une affiche, attrayante et efficace, qui met en scène des mannequins en bois illustrant différentes situations dans lesquelles l’élève peut avoir recours à la médiation. De plus, les coordonnées des médiateurs ont été ajoutées afin de rendre la prise de contact plus confidentielle mais également plus moderne (adresses e-mail, page Facebook). L’objectif est ainsi de faciliter la prise de contact entre les élèves et les médiateurs afin de permettre aux premiers de bénéficier des services qu’offre la médiation dans leur établissement.
description: Mémoire professionnel, Master en enseignement pour le degré secondaire I
A constrained gentlest ascent dynamics and its applications to finding excited states of Bose-Einstein condensates
Creators: name: Liu, Wei
name: Xie, Ziqing
name: Yuan, Yongjun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35B38, 35Q55, 49K20, 65M12, 81-08

description: In this paper, the gentlest ascent dynamics (GAD) developed in [W. E and X. Zhou, Nonlinearity, 24 (2011), pp. 1831--1842] is extended to a constrained gentlest ascent dynamics (CGAD) to find constrained saddle points with any specified Morse indices. It is proved that the linearly stable steady state of the proposed CGAD is exactly a nondegenerate constrained saddle point with a corresponding Morse index. Meanwhile, the locally exponential convergence of an idealized CGAD near nondegenerate constrained saddle points with corresponding indices is also verified. The CGAD is then applied to find excited states of single-component Bose--Einstein condensates (BECs) in the order of their Morse indices via computing constrained saddle points of the corresponding Gross--Pitaevskii energy functional under the normalization constraint. In addition, properties of the excited states of BECs in the linear/nonlinear cases are mathematically/numerically studied. Extensive numerical results are reported to show the effectiveness and robustness of our method and demonstrate some interesting physics.
description: 28 pages, 7 figures; Submitted to Journal of Computational Physics on January 30, 2021
Supplementary Information for “Seismic slip channeling along the East Anatolian Fault illuminates long-term supercycle behavior”
Creators: name: Billi, Andrea
name: Corbi, Fabio
name: Cuffaro, Marco
name: Orecchio, Barbara
name: Palano, Mimmo
name: Presti, Debora
name: Totaro, Cristina
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 370609
subject: Seismology and seismic exploration
classificationCode: 370604
subject: Geodynamics

description: The two Mw>7.5 earthquakes that struck the East Anatolian Fault (EAF), Türkiye, in 2023 caused more slip than expected, indicating that they were potentially part of a supercycle, in which the occurrence probability of a large earthquake is determined by accumulated strain rather than time since the last large earthquake. Here, we show two potential supercycles along the EAF, analyzing earthquakes from the last two millennia. Within each supercycle, seismic ruptures originated in the northeast and progressively spread southwestward with an increasing number of earthquakes until a new supercycle began with another large earthquake in the northeast. To understand the supercycle behavior, we analyze the aftershock sequences of the four most recent Mw≥6.1 mainshocks (2010-2023). This series of earthquakes progressed southwestward, characterized by an increasing diversity of focal mechanisms and a heightened dispersion of epicenters across a branched seismotectonic environment. Earthquakes in the northeast exhibit spatial and kinematic channeling along the master fault surface, effectively transferring slip southwestward and there potentially triggering dispersed and heterogeneous earthquakes. This spatiotemporal pattern seems connected with varying levels of a presumably-innate property of fault sections or regions, ruling the process of seismic slip channeling, which could also explain the behavior of long-term supercycles.
How do Clouds stay up? Essential Experiences in Science investigation card (International)
Creators: name: Billingsley, Berry
name: LASAR Research Centre
Publisher: name: Zenodo
Year: 2023
Subjects: Hands on science
Epistemic Insight
Primary education
Water Cycle
Sustainability
Primary science
Practical science

description: The Epistemic Insight "Investigating Big Questions" Discovery Bags contain a variety of scientific equipment and resources to help students 'think like a scholar'. This Investigation Card 'How do Clouds stay up?' demonstrates how two or more scientific explanations can work together to explain something more complicated in the natural world. It focuses on conducting an investigation of the properties of a water droplet with a pipette and a coin to increase understanding of the water cycle through simple observations, expanding the investigation to consider the effect of gravity on clouds. This hands on activity sets the scene to investigate issues of sustainability through science, religion and multidisciplinary perspectives.
title: A vos crayons !
title: ou Comment revisiter le mythe du talent dans les arts visuels
titleType: Subtitle
Creators: name: Golaz, Tiphaine
Publisher: name: Unknown
Year: 0
Subjects: subject: talent
subject: arts visuels
subject: motivation
subject: travail
subject: persévérance
subject: développement

description: Les enseignants en arts visuels doivent régulièrement faire face à la même complainte de leurs élèves : "j’sais pas dessiner alors à quoi bon essayer". Il existe une sorte de croyance populaire qui rendrait le fait de bien dessiner uniquement accessible à un groupe d’individus choisis par une instance suprême. Pourtant le talent artistique est la preuve tangible de compétences acquises, de capacités particulières qui ont été développées. Toutefois pour bon nombre d’individus encore, le dessin relève d’un don vaguement magique. Ce mémoire professionnel se veut plus optimiste et explore à travers un cadre théorique clairement défini les possibilités que peuvent avoir les enseignants pour revisiter ce mythe en prouvant que le talent s’acquiert à force de motivation, de travail et de persévérance. En référence aux différentes théories sur les dessins d’enfant et le sentiment d’efficacité personnelle, ce travail met en lumière les différents aspects dont il faut tenir compte afin de guider au mieux nos élèves et leur permettre de développer leurs capacités dans une branche comme les arts visuels. Quelques pistes de travail expérimentées par l’auteure sont proposées dans ce sens.
description: Mémoire professionnel, Master en enseignement pour le degré secondaire I
Rectangular multiple-relaxation-time lattice Boltzmann method for the Navier-Stokes and nonlinear convection-diffusion equations: General equilibrium and some important issues
Creators: name: Chai, Zhenhua
name: Yuan, Xiaolei
name: Shi, Baochang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In this paper, we develop a general rectangular multiple-relaxation-time lattice Boltzmann (RMRT-LB) method for the Navier-Stokes equations (NSEs) and nonlinear convection-diffusion equation (NCDE) by extending our recent unified framework of MRT-LB method [Z.H. Chai and B.C. Shi, Phys. Rev. E 102, 023306 (2020)], where a rectangular equilibrium distribution function (REDF) [J.H. Lu et al, Phil. Trans. R. Soc. A 369, 2311-2319 (2011)] on a rectangular lattice is utilized. Due to the anisotropy of discrete velocities on a rectangular lattice, the third-order moment of REDF is inconsistent with that of popular LB method, and thus the previous unified framework of MRT-LB method cannot be directly applied to the NSEs using the REDF on the rectangular rDdQq lattice. The macroscopic NSEs can be recovered from the RMRT-LB method through the direct Taylor expansion method by properly selecting the relaxation sub-matrix $\mathbf{S}_2$ which is related to kinetic viscosity and bulk viscosity. While the rectangular lattice does not lead to the change of the zero-th, first and second-order moments of REDF, thus the unified framework of MRT-LB method can be directly applied to the NCDE. It should be noted that the RMRT-LB model for NSEs can be derived on the rDdQq lattice, including rD2Q9, rD3Q19, and rD3Q27 lattices, and the RMRT-LB versions (if existed) of the previous MRT-LB models can be obtained, including those based on raw (natural)-moment, central-moment, Hermite-moment, and central Hermite-moment, respectively.
Active galactic nucleus feedback in NGC 3982
Creators: name: Joseph, Prajwel
name: George, Koshy
name: Paul, K. T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The energetic feedback from supermassive black holes can influence star formation at the centres of galaxies. Observational evidence for active galactic nucleus (AGN) impact on star formation can be searched for in galaxies by combining ultraviolet imaging and optical integral field unit data. The ultraviolet flux directly traces recent star formation, and the integral field unit data can reveal dust attenuation, gas ionisation mechanisms, and gas kinematics from the central regions of the galaxy disk. A pilot study on NGC 3982 shows star formation suppression in the central regions of the galaxy, likely due to negative AGN feedback, and enhanced star formation in the outer regions. The case of NGC 3982 could be observational evidence of AGN feedback operating in a Seyfert galaxy.
description: Published in A&A, 7 pages, 8 figures, interactive online figure at https://prajwel.github.io/NGC3982/
An unstable mode of the stratified atmosphere under the non-traditional Coriolis acceleration
Creators: name: Chew, Ray
name: Schlutow, Mark
name: Klein, Rupert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The traditional approximation neglects the cosine components of the Coriolis acceleration, and this approximation has been widely used in the study of geophysical phenomena. However, the justification of the traditional approximation is questionable under a few circumstances. In particular, dynamics with substantial vertical velocities or geophysical phenomena in the tropics have non-negligible cosine Coriolis terms. Such cases warrant investigations with the non-traditional setting, i.e., the full Coriolis acceleration. In this manuscript, we study the effect of the non-traditional setting on an isothermal, hydrostatic and compressible atmosphere assuming a meridionally homogeneous flow. Employing linear stability analysis, we show that, given appropriate boundary conditions, i.e., a bottom boundary condition that allows for a vertical energy flux and non-reflecting boundary at the top, the atmosphere at rest becomes prone to a novel unstable mode. The validity of assuming a meridionally homogeneous flow is investigated via scale analysis. Numerical experiments were conducted, and Rayleigh damping was used as a numerical approximation for the non-reflecting top boundary. Our three main results are as follows. 1) Experiments involving the full Coriolis terms exhibit an exponentially growing instability, yet experiments subjected to the traditional approximation remain stable. 2) The experimental instability growth rate is close to the theoretical value. 3) A perturbed version of the unstable mode arises even under sub-optimal bottom boundary conditions. Finally, we conclude our study by discussing the limitations, implications, and remaining open questions. Specifically, the influence on numerical deep-atmosphere models and possible physical interpretations of the unstable mode are discussed.
description: 39 pages, 12 figures
Diseño y simulación de nanoestructuras basadas en silicio para aplicaciones en MEMS /
Creators: name: Magaña Cabanillas, Luis Humberto
Publisher: name: Universidad Autónoma de Baja California, Mexicali.
Year: 2023
Subjects: subject: Sistemas microelectromecánicos:||Diseño y construcción||Tesis y disertaciones académicas
subject: TK7875 M33 2023

description: La presente tesis se enfoca en el estudio del diseño y simulación de sistemas microelectromecánicos MEMS (“Micro Electro Mechanical Systems” por sus siglas en inglés) y dispositivos de microfluidos utilizando diferentes softwares de la familia Ansys. Estas herramientas son muy útiles para la optimización de los sistemas estudiados y los procesos de fabricación. De hecho, poder simular un dispositivo electrónico permite resolver problemas antes de que surjan y sirve para ahorrar recursos y tiempo durante los procesos de fabricación. A lo largo de este proyecto se realizaron modelos y simulaciones de micro/nanoestructuras basadas en silicio para aplicaciones en MEMS como son cantilévers simples, cantilévers con películas metálicas, y cantilévers reforzadas con nanofibras (NF) de carbono, acero y cobre con el propósito de comparar resultados y modular sus frecuencias naturales. También se realizaron modelos y simulaciones de dispositivos de microfluídica como separadores de partículas, mezcladores de flujos, disipadores de calor, generadores de gotas, con el propósito de estudiar el comportamiento de fluidos de una o más fases.
Comment les élèves de 1P-2P et 4P HarmoS perçoivent-ils la punition ?
Creators: name: Masson, Chloé
name: Noverraz, Aurélie
Publisher: name: Unknown
Year: 0
Subjects: subject: gestion de classe
subject: règle de vie
subject: discipline
subject: punition
subject: sanction

description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
Rapid formation of large dust grains in the luminous supernova SN 2010jl
Creators: name: Gall, Christa
name: Hjorth, Jens
name: Watson, Darach
name: Dwek, Eli
name: Maund, Justyn R.
name: Fox, Ori
name: Leloudas, Giorgos
name: Malesani, Daniele
name: Day-Jones, Avril C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The origin of dust in galaxies is still a mystery. The majority of the refractory elements are produced in supernova explosions but it is unclear how and where dust grains condense and grow, and how they avoid destruction in the harsh environments of star-forming galaxies. The recent detection of 0.1-0.5 solar masses of dust in nearby supernova remnants suggests in situ dust formation, while other observations reveal very little dust in supernovae the first few years after explosion. Observations of the bright SN 2010jl have been interpreted as pre-existing dust, dust formation or no dust at all. Here we report the rapid (40-240 days) formation of dust in its dense circumstellar medium. The wavelength dependent extinction of this dust reveals the presence of very large (> 1 micron) grains, which are resistant to destructive processes. At later times (500-900 days), the near-IR thermal emission shows an accelerated growth in dust mass, marking the transition of the supernova from a circumstellar- to an ejecta-dominated source of dust. This provides the link between the early and late dust mass evolution in supernovae with dense circumstellar media.
description: 62 pages, 13 figures, 1 table. Author version of the Letter to Nature, published online July 9 2014 (Nature, 511, 7509, pp. 326-329 (2014)), prior to the final editorial changes to conform to Journal style; includes Methods and Extended Data Figures and the Supplementary Information. See published version http://www.nature.com/nature/journal/v511/n7509/full/nature13558.html
Circumpolar Observations and Programmes
Creators: name: Meijers, Andrew
Publisher: name: Zenodo
Year: 2023

description: OCEAN:ICE UK Grant Coordinator, Andrew Meijers presented his talk on Circumpolar Observations and Programmes at the SOOS Symposium from August 14 to 18, 2023 in Hobart, Australia. OCEAN:ICE was presented as a key case study.
The role of language in students’ justifications of chemical phenomena
Creators: name: Deng, Jacky M.
name: Rahmani, Malek
name: Flynn, Alison B.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Making decisions, reasoning, and constructing arguments with scientific evidence are essential skills for all members of society, especially in a world facing complex socioscientific issues such as climate change and pandemics. Argumentation is a complex linguistic practice but little is known about how students from diverse language backgrounds engage in argumentation. The goal of this study was to identify how students’ English language proficiency and history was associated with the reasoning demonstrated in their written arguments. We found that students with lower English proficiency and less English history produced fewer causal responses compared to students with higher English language proficiency and history. Follow-up interviews with fifteen participants revealed that students’ comfort communicating in English on assessments was affected by a combination of general and academic language experiences. Findings suggest a need to identify the barriers encountered by students from diverse language backgrounds during argumentation to ensure students from all language backgrounds have equitable supports and opportunities to demonstrate their scientific abilities.
Report on organizational and legal forms and business models for RECs
Creators: name: Fouquet, Dörte
name: Vollmer, Johannes
Publisher: name: Zenodo
Year: 2021

description: Deliverable 4.1. provides an overview of existing and planned organisational and legal forms and business models of renewable energy communities (RECs) from across Europe. In addition, this report includes - where relevant and not yet described in the COME RES Deliverable 2.1 “Assessment Report on Technical, Legal, Institutional and Policy Conditions”1 - information on local conditions, such as regulatory specificities at local and/or national level, available resources and support mechanisms, as well as further financial conditions and barriers (economic, regulatory, social, technical, related to other local conditions). Business models in this context are understood as models that are financially viable and “provide environmental, economic or social community benefits for its shareholders or members or for the local areas where it operates, rather than financial profits’2”. Further aspects include a community’s main value proposition to its beneficiaries, the key partners, its main activities, drivers and resources that are not monetary.