cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Gaia-ESO Survey: metallicity and kinematic trends in the Milky Way bulge
Creators: name: Rojas-Arriagada, A.
name: Recio-Blanco, A.
name: Hill, V.
name: de Laverny, P.
name: Schultheis, M.
name: Babusiaux, C.
name: Zoccali, M.
name: Minniti, D.
name: Gonzalez, O. A.
name: Feltzing, S.
name: Gilmore, G.
name: Randich, S.
name: Vallenari, A.
name: Alfaro, E. J.
name: Bensby, T.
name: Bragaglia, A.
name: Flaccomio, E.
name: Lanzafame, A. C.
name: Pancino, E.
name: Smiljanic, R.
name: Bergemann, M.
name: Costado, M. T.
name: Damiani, F.
name: Hourihane, A.
name: Jofré, P.
name: Lardo, C.
name: Magrini, L.
name: Maiorca, E.
name: Morbidelli, L.
name: Sbordone, L.
name: Worley, C. C.
name: Zaggia, S.
name: Wyse, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (Abridged) We analyzed the stellar parameters and radial velocities of ~1200 stars in five bulge fields as determined from the Gaia-ESO survey data (iDR1). We use VISTA Variables in The Via Lactea (VVV) photometry to obtain reddening values by using a semi-empirical T_eff-color calibration. From a Gaussian decomposition of the metallicity distribution functions, we unveil a clear bimodality in all fields, with the relative size of components depending of the specific position on the sky. In agreement with some previous studies, we find a mild gradient along the minor axis (-0.05 dex/deg between b=-6 and b=-10) that arises from the varying proportion of metal-rich and metal-poor components. The number of metal-rich stars fades in favor of the metal-poor stars with increasing b. The K-magnitude distribution of the metal-rich population splits into two peaks for two of the analyzed fields that intersects the near and far branches of the X-shaped bulge structure. In addition, two lateral fields at (l,b)=(7,-9) and (l,b)=(-10,-8) present contrasting characteristics. In the former, the metallicity distribution is dominated by metal-rich stars, while in the latter it presents a mix of a metal-poor population and and a metal-intermediate one, of nearly equal sizes. Finally, we find systematic differences in the velocity dispersion between the metal-rich and the metal-poor components of each field. Our chemo-kinematical analysis is consistent with a varying field-to-field proportion of stars belonging to (i) a metal-rich boxy/peanut X-shaped component, with bar-like kinematics, and (ii) a metal-poor more extended rotating structure with a higher velocity dispersion that dominates far from the Galactic plane. These first GES data allow studying the detailed spatial dependence of the Galactic bulge populations, thanks to the analysis of individual fields with relatively high statistics.
description: Accepted for publication in Astronomy and Astrophysics
Utilisation des TICE pour favoriser l'appropriation de la notion de fonctions et de leurs graphes
Creators: name: Delmonico, Cédric
Publisher: name: Unknown
Year: 0
Subjects: subject: Fonction affine
subject: Fonction quadratique
subject: Représntation graphique
subject: Représentation algébrique
subject: TICE

description: Dans ce travail, nous nous intéressons à l’apprentissage de la notion de fonction au Secondaire II, particulièrement dans les classes de première année maturité en mathématiques de niveau standard. Nous partons du constat, qu’en fin de cursus gymnasial, le élèves ont une faible représentation graphique et intuitive des fonctions alors que l’étude de fonction constitue un des sujets majeurs de leur formation mathématique. Nous nous posons dès lors la question suivante: Est-il possible de faire cohabiter une notion intuitive et graphique des fonctions avec les aspects techniques et algébriques de l’analyse de fonction ? Nous proposons deux séquences d’enseignement, l’une sur les fonctions affines, l’autre sur les fonctions quadratiques que nous avons testées avec deux classes. Nous nous intéressons notamment à la pertinence de l’utilisation des TICE dans l’enseignement de la notion de fonction. Nous avons construit deux leçons sur un support informatique (Moodle) et élaboré des applets avec le logiciel GeoGebra permettant aux élèves de manipuler les coefficients des expressions algébriques de fonctions affines ou quadratiques et d’observer leur influence sur les graphes. Nous montrons que l’utilisation des TICE est appropriée pour l’enseignement des fonctions, moyennant une préparation attentive et chronophage des supports de cours informatisés. Nous avons observé un effet positif sur la motivation et la participation des élèves lors de ces leçons. Nous sommes convaincus par l’efficacité de tels outils sur l’apprentissage, plus particulièrement sur le changement de cadre algébrique-graphique. Toutefois, nous pensons que l’utilisation des TICE doit être intégrée dans la séquence comme complément aux leçons «classiques». Par exemple, des exercices papier-crayon nous semblent indispensables pour l’appropriation de la notion de valeur d’une fonction en un point.
description: Mémoire professionnel, Diplôme d'enseignement pour le degré secondaire II
The Romano-British farmstead and its cemetery at Lynch Farm, near Peterborough
Creators: name: Jones, Richard F J
Publisher: name: Archaeology Data Service
Year: 2020

description: Northamptonshire Archaeology, 10, 94-137
description: Part of a cropmark site was examined in advance of gravel-working. Pits and ditches attested occupation throughout 3rd and at least early 4th century AD. An adjoining cemetery, containing one cremation and at least 50 inhumations, presumably served the farmstead; wooden coffins and stone cists were used, and some grave-plots were re-used repeatedly. Grave goods were rare. Pottery (treated quantitatively), animal bones and human bones are reported.
Ultrashort pulse generation from a graphene-coupled passively mode-locked terahertz laser
Creators: name: Riccardi, Elisa
name: Pistore, Valentino
name: Kang, Seonggil
name: Seitner, Lukas
name: De Vetter, Anna
name: Jirauschek, Christian
name: Mangeney, Juliette
name: Li, Lianhe
name: Davies, A. Giles
name: Linfield, Edmund H.
name: Ferrari, Andrea C.
name: Dhillon, Sukhdeep S.
name: Vitiello, Miriam S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The generation of stable trains of ultra-short (fs-ps), terahertz (THz)-frequency radiation pulses, with large instantaneous intensities, is an underpinning requirement for the investigation of light-matter interactions, for metrology and for ultra-high-speed communications. In solid-state electrically-pumped lasers, the primary route for generating short pulses is through passive mode-locking. However, this has not yet been achieved in the THz range, defining one of the longest standing goals over the last two decades. In fact, the realization of passive mode-locking has long been assumed to be inherently hindered by the fast recovery times associated with the intersubband gain of THz lasers. Here, we demonstrate a self-starting miniaturized ultra-short pulse THz laser, exploiting an original device architecture that includes the surface patterning of multilayer-graphene saturable absorbers distributed along the entire cavity of a double-metal semiconductor 2.30-3.55 THz wire laser. Self-starting pulsed emission with 4.0-ps-long pulses in a compact, all-electronic, all-passive and inexpensive configuration is demonstrated.
description: 20 pages, 4 figures
title: L'institution
title: matrice des apprentissages des praticiens formateurs : le lien entre les Etablissements partenaires de formation et la Haute école pédagogique de Lausanne : comment donner de la cohésion et de la pertinence à la formation pratique dans un établissement scolaire pour les étudiants de la HEP et pour les praticiens formateurs d'un Etablissement partenaire de formation ?
titleType: Subtitle
Creators: name: Perroud, Nathalie
Publisher: name: Unknown
Year: 0
Subjects: subject: formation pratique
subject: Etablissement partenaire de formation
subject: systémique
subject: management
subject: communication
subject: organisation apprenante

description: Dans le cadre de ce mémoire, nous abordons une réflexion qui porte sur comment donner de la cohésion et de la pertinence à la formation pratique dans un établissement scolaire du canton de Vaud pour les étudiants de la HEP et pour les praticiens formateurs d'un Etablissement Partenaire de Formation. Nous abordons des notions de management, de communication et de systémiqueet essayons de développer des concepts pour rendre plus efficiente la formation pratique. Une analyse finedu contexte est faite. Nous essayons de relever les forces et les faiblesses existantes du système que nous présentons. L'idée étant de mettre en évidence quels sont les problèmes d’interactions engendrés par le système. Celuique nous avons choisi d'analyser est complexe, c’est d’ailleurs la raison pour laquelle il nous intéresse ici. Au travers de ce travail, nous souhaitons trouver des pistes afin d'améliorer la circulation de l’information, par-là même, la gestion de la communication externe à l'Etablissement Partenaire de Formation et interneà celui-ci. Ceci nous amène à clarifier les rôles (informer, répondre à des demandes d’informations, disposer d’information, les exploiter, prélever de l’information sur l’environnement, stocker cette information sont autant d’activités qui sont liées au système) nous avons besoin de rendre visible la communication externe ou interne en fonction des situations et de définir les moyens à utiliser ce qui nous conduisentà élaborer des outils. L'apport de ce travail estla construction d'un modèle de réflexiondans lecadre d'un EPF concernant l'organisation de la formation pratique. Cela permetdes propositions de mesures visant à amener l'institution vers une organisation apprenante en devenir.
description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
Impacto de enfriamiento de vacas Holstein durante el periodo seco en variables fisiológicas preparto y productivas posparto en verano /
Creators: name: Lindquist Fuentes, Brisa Guadalupe
Publisher: name: Universidad Autónoma de Baja California, Mexicali.
Year: 2023
Subjects: subject: Ganado||Holstein-Friesian||Tesis y disertaciones académicas||lemb
subject: SF199.H75 L55 2022

description: Se condujeron dos experimentos para determinar si el enfriamiento de vacas Holstein durante el periodo seco mejora su estado fisiológico en el preparto y el desempeño productivo posparto. Se usaron 28 vacas Holstein en dos veranos consecutivos (n1=12 y n2=16, respectivamente) que se dividieron en dos corrales sujetos a dos tratamientos: 1) con sombra y sin enfriamiento y 2) con sombra y enfriamiento (abanicos y aspersores). En preparto se midió frecuencia respiratoria (FR) y temperatura rectal (TR) en tres horarios (10:00, 14:00 y 18:00 h) y en posparto se midieron parámetros productivos y reproductivos. El modelo estadístico incluyó los efectos año, tratamiento y semana, así como sus interacciones. Las vacas enfriadas tuvieron menor (P<0.05) FR y TR en el preparto a las 14:00 y 18:00 h que vacas sin enfriamiento. La producción de leche y grasa, así como la energía en leche, fueron mayores (P<0.05) en el grupo enfriado conforme las semanas avanzaron (semanas 5 a la 8). El peso de las crías al nacimiento tendió a ser mayor (P=0.10) en el grupo enfriado, mientras que servicios por concepción y días abiertos fueron mayores (P<0.05) en el grupo sin enfriamiento. Las crías de vacas enfriadas fueron significativamente (P<0.05) más pesadas ( 37.91 kg) que crías de vacas no enfriadas (33.72 kg). Enfriar vacas lecheras Holstein con aspersores y abanicos durante 60 d preparto mejoró la fisiología preparto y la producción de leche, así como el peso al nacimiento de sus crías.
Changes In Cigar Leaf Tobacco Acreage
Creators: name: Braden, Johnny D.
name: Braden, Johnny D.
Publisher: name: Unknown
Year: 1973
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Labor and Human Capital
subject: Productivity Analysis
subject: Research Methods/ Statistical Methods
subject: Cigar tobacco
subject: Acreage
subject: Economic trends
subject: Regression analysis

description: Cigar tobacco—filler, binder, and wrapper—was produced in seven States in 1971 and accounted for 3.9 percent of total U.S. tobacco production. General economic trends, rising imports, and industrial developments brought a two-thirds decline in cigar tobacco acreage during 1950-71, thus reducing acreage to 37,000. In six of the seven producing States, farm employment declined. Farm wage rates more than doubled, but tobacco prices did not keep pace. Regression analysis for 1957-71 explained 98 percent of the year-to-year variations in filler and binder acreage and 91 percent in wrapper. Farm tobacco prices and trend were the major factors associated with acreage variations. Further acreage decline is likely in the future.
Imaging an Event Horizon: Mitigation of Scattering Toward Sagittarius A*
Creators: name: Fish, Vincent L.
name: Johnson, Michael D.
name: Lu, Ru-Sen
name: Doeleman, Sheperd S.
name: Bouman, Katherine L.
name: Zoran, Daniel
name: Freeman, William T.
name: Psaltis, Dimitrios
name: Narayan, Ramesh
name: Pankratius, Victor
name: Broderick, Avery E.
name: Gwinn, Carl R.
name: Vertatschitsch, Laura E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The image of the emission surrounding the black hole in the center of the Milky Way is predicted to exhibit the imprint of general relativistic (GR) effects, including the existence of a shadow feature and a photon ring of diameter ~50 microarcseconds. Structure on these scales can be resolved by millimeter-wavelength very long baseline interferometry (VLBI). However, strong-field GR features of interest will be blurred at lambda >= 1.3 mm due to scattering by interstellar electrons. The scattering properties are well understood over most of the relevant range of baseline lengths, suggesting that the scattering may be (mostly) invertible. We simulate observations of a model image of Sgr A* and demonstrate that the effects of scattering can indeed be mitigated by correcting the visibilities before reconstructing the image. This technique is also applicable to Sgr A* at longer wavelengths.
description: 7 pages, accepted to ApJ
Poisson structures for lifts and periodic reductions of integrable lattice equations
Creators: name: Kouloukas, Theodoros E.
name: Tran, Dinh T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We introduce and study suitable Poisson structures for four dimensional maps derived as lifts and specific periodic reductions of integrable lattice equations. These maps are Poisson with respect to these structures and the corresponding integrals are in involution.
title: Pediatric intradural-extramedullary spinal schwannoma: A case of acute coxalgia
Creators: name: Quercioli, Giulia
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Musculoskeletal system
subject: Musculoskeletal spine
subject: Neuroradiology spine
subject: Paediatric
subject: MR
subject: Ablation procedures
subject: Clinical Cases

description: Clinical History: An 11-year-old girl experienced nocturnal right coxalgia, progressing to lumbosacral spine pain and walking difficulties. Despite negative inflammatory markers, she displayed joint limitations, lumbar tenderness, and abnormal patellar reflexes. Neurological examination revealed mobile right hip, with pain during Mingazzini II manoeuvre. The clinical presentation defied specific diagnoses, posing a diagnostic challenge.

description: 11 years, female
Rapid Growth of Galactic Supermassive Black Holes through Accreting Giant Molecular Clouds during Major Mergers of their Host Galaxies
Creators: name: Lin, Chi-Hong
name: Chen, Ke-Jung
name: Hwang, Chorng-Yuan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Understanding the formation of the supermassive black holes (SMBHs) present in the centers of galaxies is a crucial topic in modern astrophysics. Observations have detected the SMBHs with mass $M$ of $10^{9}\, \rm M_\odot$ in the high-redshift galaxies with $\rm z\sim7$. However, how SMBHs grew to such huge masses within the first billion years after the big bang remains elusive. One possible explanation is that SMBHs grow quickly through the frequent mergers of galaxies, which provides sustainable gas to maintain rapid growth. This study presents the hydrodynamics simulations of the SMBHs' growth with their host galaxies using the GIZMO code. In contrast to previous simulations, we have developed a giant molecular cloud (GMC) model by separating molecular-gas particles from the atomic-gas particles and then evolving them independently. During major mergers, we show that the more massive molecular gas particles cloud bear stronger dynamical friction. Consequently, GMCs are substantially accreted onto the galactic centers that grow SMBHs from $\sim 10^{7}$ $\rm M_\odot$ to $\sim 10^{9}\, \rm M_\odot$ within $300$ Myr, explaining the rapid growth of SMBHs, and this accretion also triggers a violent starburst at the galactic center. Furthermore, we examine the impact of minor mergers on the bulge of a Milky-Way-like galaxy and find that the size and mass of the bulge can increase from $0.92$ kpc to $1.9$ kpc and from $4.7\times 10^{10}\, \rm M_\odot$ to $7\times 10^{10}\, \rm M_\odot$.
description: 17 pages, 9 figures. Accepted for publication in ApJ
Numerical evaluation of stress intensity factors and T-stress for interfacial cracks and cracks terminating at the interface without asymptotic enrichment
Creators: name: Natarajan, Sundararajan
name: Song, Chongmin
name: Belouettar, Salim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we extend the recently proposed extended scaled boundary finite element method (xSBFEM)~\cite{natarajansong2013} to study fracture parameters of interfacial cracks and cracks terminating at the interface. The approach is also applied to crack growth along the interface and crack deflecting into the material within the context of linear elastic fracture mechanics. Apart from the stress intensity factors, the T-stress can be computed directly from the definitions, without any requirement of path independent integrals. The method aims at improving the capability of the extended finite element method in treating crack tip singularities of cracks at interfaces. An optimum size of the scaled boundary region is presented for multimaterial junctions. The proposed method: (1) does not require special numerical integration technique; (2) does not require a priori knowledge of the asymptotic fields and (3) the stiffness of the region containing the crack tip is computed directly. The robustness of the proposed approach is demonstrated with a few examples in the context of linear elastic fracture mechanics. A discussion on the crack growth along the interface and crack deflecting into the material is also presented.
Surface chemistry in the Interstellar Medium II. $\mathrm{H}_2$ formation on dust with random temperature fluctuations
Creators: name: Bron, Emeric
name: Bourlot, Jacques Le
name: Petit, Franck Le
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The $\mathrm{H}_2$ formation on grains is known to be sensitive to dust temperature, which is also known to fluctuate for small grain sizes due to photon absorption. We aim at exploring the consequences of simultaneous fluctuations of the dust temperature and the adsorbed H-atom population on the $\mathrm{H}_2$ formation rate under the full range of astrophysically relevant UV intensities and gas conditions. The master equation approach is generalized to coupled fluctuations in both the grain's temperature and its surface population and solved numerically. The resolution can be simplified in the case of the Eley-Rideal mechanism, allowing a fast computation. For the Langmuir-Hinshelwood mechanism, it remains computationally expensive, and accurate approximations are constructed. We find the Langmuir-Hinshelwood mechanism to become an efficient formation mechanism in unshielded photon dominated region (PDR) edge conditions when taking those fluctuations into account, despite hot average dust temperatures. It reaches an importance comparable to the Eley-Rideal mechanism. However, we show that a simpler rate equation treatment gives qualitatively correct observable results in full cloud simulations under most astrophysically relevant conditions. Typical differences are a factor of 2-3 on the intensities of the $\mathrm{H}_2$ $v=0$ lines. We also find that rare fluctuations in cloud cores are sufficient to significantly reduce the formation efficiency. Our detailed analysis confirms that the usual approximations used in numerical models are adequate when interpreting observations, but a more sophisticated statistical analysis is required if one is interested in the details of surface processes.
description: 21 pages, 28 figures, accepted in A&A
Validación de la administración a distancia de neuropsi breve en adultos mayores en aislamiento por COVID-19 una orientación a la calidad de vida /
Creators: name: Alvarado Barajas, Mario Enrique
Publisher: name: Universidad Autónoma de Baja California, Mexicali.
Year: 2023
Subjects: subject: Neuropsicología clínica||Tesis y disertaciones académicas||Sistema nervioso||Enfermedades||Diagnóstico||Tesis y disertaciones académicas||lemb
subject: RC386.6.N48 A58 2022

description: De acuerdo a el ciclo de desarrollo humano, en específico a partir de la adultez tardía un adulto mayor conforme avanza en edad (se desarrolla a ritmo diferente) es propenso a presentar diversos cambios tanto físicas como psicológicas (Papalia, Feldman, & Martorell; 2012, pp. 548-616), suponiendo en muchos casos un problema que compromete la calidad de vida tanto para el adulto mayor como para quienes se relacionan con ellos debido a los distintos factores de cada individuo (emocional, social, psicológico físico y económico). Aspectos como adherencia a los tratamientos y los hábitos de la vida diaria son ejemplos de áreas que se ven afectadas debido al deterioro de las diferentes capacidades. Dentro de lo anterior, las funciones ejecutivas, atención y memoria juegan un papel importante ya que facilitan la toma de mejores decisiones de manera general al igual que personal. La condición de aislamiento social, modificó drásticamente la vida de las personas y las necesidades de los clínicos (Psicólogos) para realizar valoraciones e intervenciones neuropsicológicas. El presente trabajo tuvo como objetivo validar mediante la comparación de los resultados de la aplicación a distancia de NEUROPSI Breve a una muestra de adultos mayores con una muestra valorada presencialmente. Par ello se valoró a distancia a un grupo de 13 adultos mayores (edad media de 68 años con 6.67 σ), agregando de manera presencial a un grupo de 20 adultos mayores (edad media de 76 años y 8.40 σ), para ello se aplicó una entrevista estructurada y NEUROPSI breve donde los resultados mostraron que existe diferencia significativa entre Neuropsi total (gl = 31, p < .001) concentración (gl = 31, p < .001), lenguaje (gl = 31, p < .001) y Orientación (gl = 31, p < .043) lo cual marca un problema en la aplicación de dichas áreas en comparación con su versión a papel; por otro lado, áreas como Funciones Ejecutivas (gl = 31, p < .127) y memoria (gl = 31, p < .058) no muestran diferencias en su aplicación, siendo viables en aplicación digital.
title: Wissenschaftliche Begleituntersuchung zu digitalen Zwillingen von Kommunen im Bundesgebiet
title: REACT-EU - Digitaler Innenstadt-Zwilling: Unterstützung bei der inhaltlichen und technischen Konzeptionierung von Anwendungsfällen für ein digitales, raumbezogenes Abbild der Regensburger Innenstadt
titleType: Subtitle
Creators: name: von Richthofen, Aurel
name: Saad, Ali
name: Cyganski, Jan
name: Sanchez, Maria Aranda
name: Kroeske, Marlen
name: Kniffki, Simon
name: Vogt, Lisa
name: Skulic, Emir
name: Berres, Laura
Publisher: name: Stadt Regensburg, Amt für Stadtentwicklung
Year: 2023
Subjects: urban data platform
digital twin
public administration
digitalization
smart city
digitaler zwilling
deutsche Kommune
datenplattform
kommunale zwillinge

description: Die vorliegende Studie analysiert umgesetzte oder in der Umsetzung fortgeschrittene Fallbeispiele digitaler (Stadt-) Zwillinge und Anwendungsfälle ("Use Cases") aus Kommunen in Deutschland anhand von ausgewählten Kriterien, die für die geplante Entwicklung und Umsetzung eines digitalen Zwillings und verschiedener Use Cases in Regensburg relevant sind. Ein Stadtzwilling wird im Rahmen dieser Studie als besondere, auf städtische Bedürfnisse wie Planung, Steuerung und Beteiligung im urbanen Kontext zugeschnittene, Form von digitalen Zwillingen aufgefasst. Im Sinne der Lesbarkeit wird im Folgenden von digitalen Zwillingen gesprochen, wenn solche Stadtzwillinge gemeint sind. Die Informationen sollen der Stadt Regensburg helfen die Planung ihres digitalen Zwillings, hinsichtlich personeller, finanzieller und technischer Aspekte, präzisieren zu können.
Convex hulls of random walks and their scaling limits
Creators: name: Wade, Andrew R.
name: Xu, Chang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G50, 60D05 (Primary), 60J65, 60F05, 60F17 (Secondary)

description: For the perimeter length and the area of the convex hull of the first $n$ steps of a planar random walk, we study $n \to \infty$ mean and variance asymptotics and establish non-Gaussian distributional limits. Our results apply to random walks with drift (for the area) and walks with no drift (for both area and perimeter length) under mild moments assumptions on the increments. These results complement and contrast with previous work which showed that the perimeter length in the case with drift satisfies a central limit theorem. We deduce these results from weak convergence statements for the convex hulls of random walks to scaling limits defined in terms of convex hulls of certain Brownian motions. We give bounds that confirm that the limiting variances in our results are non-zero.
description: 19 pages, 1 colour figure
title: Elèves allophones
title: quels sont les facteurs favorisant une intégration scolaire réussie ?
titleType: Subtitle
Creators: name: Mitrovic, Sanja
Publisher: name: Unknown
Year: 0
Subjects: subject: Allophonie
subject: bilinguisme
subject: immigration
subject: intégration
subject: interculturalité
subject: langue

description: En tant que personne allophone, je me suis toujours intéressée au lien existant entre l’allophonie et le parcours scolaire, sans avoir eu l’occasion d’approfondir davantage cette question. En débutant ce travail, j’ai découvert que les statistiques démontrent que les élèves allophones sont surreprésentés dans les filières à exigences moins élevées, ce qui suppose des difficultés scolaires. En parallèle, les apports du bilinguisme sur les compétences cognitives sont régulièrement mis en avant par de nombreuses études. J’ai souhaité comprendre ce paradoxe entre répercussions apparemment négatives de l’allophonie et l’impact positif entraîné par un bilinguisme. Cela m’a conduit aux différents types de bilinguisme que l’on peut rencontrer et à leurs conséquences. Ainsi, dans quelles circonstances le bilinguisme est-il un avantage ou au contraire source de difficulté ? Par la suite et après diverses recherches théoriques,j’ai pu prendre en considération un certain nombre de facteurs dits favorables à une réussite scolaire des élèves allophones. En fonction de ces éléments, j’ai menédes entretiens avec des élèves allophones dont les résultats scolaires démontrent une réussite. Dès lors, je me suis appuyée sur leurs vécus et discours respectifs afin de déterminer les facteurs qui leur ont permis de réussir scolairement.
description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
Dynamic cloaking of a diamond-shaped hole in elastic plate
Creators: name: Tang, Kun
name: Luz, Eitam
name: Amram, David
name: Kadysz, Luna
name: Guenneau, Sebastien
name: Sebbah, Patrick
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Physics (physics.class-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Invisibility cloaks for flexural waves have been mostly examined in the continuous-wave regime, while invisibility is likely to deteriorate for short pulses. Here, we propose the practical realization of a unidirectional invisibility cloak for flexural waves based on an area-preserving coordinate transformation. Time-resolved experiments reveal how the invisibility cloak deviates a pulsed plane-wave from its initial trajectory, and how the initial wavefront perfectly recombines behind the cloak, leaving the diamond-shaped hole invisible, notwithstanding the appearance of a forerunner. Three-dimensional full-elasticity simulations support our experimental observations.
Theoretical investigation on electronic properties and carrier mobilities of armchair graphyne nanoribbons
Creators: name: Ge, Hongyu
name: Wang, Guo
name: Liao, Yi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Seven types of armchair graphyne nanoribbons are investigated with HSE06 functional. The quantum confinements in the graphyne nanoribbons open or increase the band gaps of the corresponding two-dimensional graphynes, which is crucial to high on/off ratio in electronic device operation. The major carrier mobilities of the graphyne nanoribbons with high percentage of sp hybridized carbon atoms are very large. The sparse linking pattern results in small number of frontier crystal orbitals and small deformation potential constants, which are responsible for the large carrier mobilities. Some graphyne nanoribbons have band gaps larger than 0.4 eV. Meanwhile, they have both high hole and electron mobilities. These benefit current complementary circuit with low power dissipation. Especially, the hole and electron mobilities of 14,14,18-graphyne nanoribbons are more than an order larger than those of the armchair graphene nanoribbons, indicating that they have potential applications in high speed electronic devices.
Code used to generate optimized wind farm portfolios for minimizing overall power fluctuations
Creators: name: Poulsen, Turið
Publisher: name: Zenodo
Year: 2022

description: These codes were used to generate results for the article "Optimization of wind farm portfolios for minimizing overall power fluctuations at selective frequencies – a case study of the Faroe Islands" (Journal: Wind Energy Science), using the software MATLAB R2021b.
Kinematic Lensing Inference I: Characterizing Shape Noise with Simulated Analyses
Creators: name: S., Pranjal R.
name: Krause, Elisabeth
name: Huang, Hung-Jin
name: Huff, Eric
name: Xu, Jiachuan
name: Eifler, Tim
name: Everett, Spencer
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The unknown intrinsic shape of source galaxies is one of the largest uncertainties of weak gravitational lensing (WL). It results in the so-called shape noise at the level of $σ_ε^{\mathrm{WL}} \approx 0.26$, whereas the shear effect of interest is of order percent. Kinematic lensing (KL) is a new technique that combines photometric shape measurements with resolved spectroscopic observations to infer the intrinsic galaxy shape and directly estimate the gravitational shear. This paper presents a KL inference pipeline that jointly forward-models galaxy imaging and slit spectroscopy to extract the shear signal. We build a set of realistic mock observations and show that the KL inference pipeline can robustly recover the input shear. To quantify the shear measurement uncertainty for KL, we average the shape noise over a population of randomly oriented disc galaxies and estimate it to be $σ_ε^{\mathrm{KL}}\approx 0.022-0.041$ depending on emission line signal-to-noise. This order of magnitude improvement over traditional WL makes a KL observational program feasible with existing spectroscopic instruments. To this end, we characterize the dependence of KL shape noise on observational factors and discuss implications for the survey strategy of future KL observations. In particular, we find that prioritizing quality spectra of low inclination galaxies is more advantageous than maximizing the overall number density.
Supplementary Material;Supplementary Figure 1;Supplementary Figure 2;Supplementary Figure 3 from Fluctuations in tissue growth portray homeostasis as a critical state and long-time non-Markovian cell proliferation as Markovian
Creators: name: Lavalle, Natalia G.
name: Chara, Osvaldo
name: Grigera, Tomás S.
Publisher: name: The Royal Society
Year: 2023
Subjects: Biophysics
Computational Biology
Biological Mathematics

description: Supplementary figure 1: Extinction probability for the different regimes of the Markovian model. The extinction probability Pe(t) (the probability that the system becomes extinct at or before t) starting with n0=50 for the decline phase (A), growth phase (B) and homeostatic state (C). When t→∞, Pe tends to 1 in the homeostatic and decline regimes, and to a value (κ/σ)n0<1 in the growth regime (D). Note the singularity at κ/σ=1.;Supplementary figure 2: The growth of two different samples is approximately related by a time shift. A) Number of cells vs. time for two samples of the numerical simulation of the Markovian model. B) Same curves with the curve of sample 2 shifted in time by 18 time steps. This shows that the exponential growth in both samples is essentially amplifying the initial small fluctuations among samples, so that growth in different samples is approximately related by a time shift. After the first few steps, if one sample has a larger population than another one, it is extremely unlikely that the size relation will invert later in time.;Supplementary figure 3: The temporal evolution of the number of cells shows damped oscillatory behaviour superimposed over the growth. In orange, temporal evolution (500 simulation steps) of the average number of cells over 200 samples of a tissue. In green temporal evolution of 20 samples.
Two Iron Age sites north of Kettering, Northamptonshire
Creators: name: Jackson, Dennis A
Publisher: name: Archaeology Data Service
Year: 2020

description: Northamptonshire Archaeology, 11, 71-88
description: In 1969, ironstone quarrying at Glendon Quarry in Weekley parish led to the discovery of an early Iron Age settlement, defined mainly by a series of postholes. Fieldwork has brought to light a number of Iron Age and Romano-British sites to the north of Kettering threatened or destroyed by quarrying and housing development. The Iron Age sites described here lay in the parish of Rushton and comprised ditches containing pottery of the middle to late Iron Age.
Le manuel d'anglais More ! 7e pour enseigner la communication orale au cycle 2 ?
Creators: name: Reift, Olivia Charlotte
Publisher: name: Unknown
Year: 0
Subjects: subject: Didactique des langues étrangères
subject: manuel scolaire
subject: tâche en langue étrangère
subject: enseignement de l’anglais L3
subject: production orale
subject: capacité langagière vs compétence langagière

description: Dans le canton de Vaud, à la rentrée 2015 - et à la rentrée 2013 prochaine pour le reste de la Romandie - l’anglais entrera en vigueur comme seconde langue étrangère, après l’allemand, enseignée aux élèves dès la 7è HarmoS. Comme le stipule la CDIP (Conférence des directeurs de l’instruction publique, 2011), l’accent est mis, dans l’apprentissage précoce des langues étrangères, sur le développement de compétences de communication orale et écrite. Dans cette recherche, nous nous proposons d’analyser les tâches conçues dans les manuels de la collection MORE ! 7e, retenue comme moyen officiel pour les élèves de 7H, avec la focale production orale. Notre but premier est de nous familiariser, en tant qu’enseignants, avec cette collection. Nous souhaitons non seulement comprendre la structure, la complétude et la cohérence ou non des manuels proposés à l’enseignant et à ses élèves, mais aussi explorer les tâches qui nous permettront d’amener nos élèves à produire oralement. Grâce à ces analyses nous pourrons émettre des hypothèses sur le ou les modèles théoriques, de didactique des langues étrangères, que les auteurs de MORE 7e ont choisies. Notre méthodologie d’analyse des manuels par les tâches se veut transposable à d’autres manuels de langue. Car il s’agit bien d’une compétence réflexive d’analyse, pour tout enseignant, que nous proposons de mettre en œuvre ici. Loin d’être exhaustive, cette recherche fixe donc néanmoins des pistes d’analyse. Elle pourrait constituer un point de départ pour tout chercheur qui voudrait poursuivre ce travail et l’étendre à la collection MORE 7e entière voire, de manière synchronique, à d’autres manuels de langue étrangère destinés aux mêmes élèves.
description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
Arithmetic Structures in Random Sets
Creators: name: Hamel, Mariah
name: Laba, Izabella
Publisher: name: Zenodo
Year: 2008

description: We extend two well-known results in additive number theory, Sárközy's theorem on square differences in dense sets and a theorem of Green on long arithmetic progressions in sumsets, to subsets of random sets of asymptotic density 0. Our proofs rely on a restriction-type Fourier analytic argument of Green and Green-Tao.
Le rôle du conseil de classe dans la régulation des conflits entre élèves
Creators: name: Arean, Alba
name: Hofer, Cristina
Publisher: name: Unknown
Year: 0
Subjects: subject: Conseil de classe
subject: médiation
subject: conflit
subject: mode de résolution
subject: régulation
subject: dialogue

description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
Slow transport and bound states for spinless fermions with long-range Coulomb interactions on one-dimensional lattices
Creators: name: Li, Zhi-hua
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study transport and relaxation of spinless fermions with long-range Coulomb interactions at high temperatures through numerical simulations of out-of-equilibrium dynamics. We find that the transport and relaxation are continuously slowing down for increasing coupling $V$, and that there is a transition in the type of transport. For intermediate couplings, the system exhibits normal diffusive transport but the time scale for the onset of that is long. For large couplings, it exhibits subdiffusive transport, while at the same time the relaxation time diverges exponentially with system lengths, featuring an MBL-like phase. We attribute the slow transport to formation of slow bound states and stable clusters of particles. For few-particle systems we prove existence, visualize the slowness and analyze collision properties of the bound states. For many particles at high densities there should be a hierarchy of clusters of particles on many different length scales. We argue that at large couplings the average maximal size of the stable clusters should scale linearly with the length of the lattice, which is in accordance with the MBL-like behavior.
description: 11 pages, 11 figures; almost identical to the published version
Les stratégies motivationnelles
Creators: name: Beutler, Alyssia
Publisher: name: Unknown
Year: 0
Subjects: subject: La motivation
subject: la dynamique motivationnelle
subject: l'activité
subject: les neuf stratégies
subject: la relation pédagogique
subject: Rolland Viaud (1994)

description: Les enfants sont toujours motivés lorsqu’il s’agit de jouer ou de regarder un film. Pourquoi ne le sont-ils pas lorsqu’il s’agit d’aller à l’école ou d’apprendre ? Nous savons à quel point la motivation tient un rôle important dans la vie quotidienne, mais plus particulièrement pour pouvoir entrer dans des apprentissages. Aujourd’hui, il est de plus en plus difficile pour les enseignants de motiver leurs élèves. Lors de mes différents stages, j’ai pu observer diverses pratiques, manières de travailler. C’est à ce moment que je me suis rendu compte que je n’étais pas la seule à avoir des difficultés à motiver les élèves. Le plus souvent, les élèves passent de fiche en fiche sans en retirer aucun plaisir ni aucun apprentissage. C’est à partir de là que j’ai construit ma question de recherche : Comment les enseignants du primaire pensent-ils favoriser la motivation de leurs élèves ? La motivation étant un sujet très personnel, complexe et difficilement observable, j’ai procédé à des entretiens avec différents enseignants. J’ai donc construit un cadre théorique autour de la motivation, de la relation pédagogique, de l’évaluation et de l’activité puis, j’ai construit une grille d’entretien et une grille d’analyse. Pour pouvoir répondre à ma question, j’ai donc fait quatre entretiens avec des enseignants, je les ai analysés et je les ai mis en lien avec mon cadre théorique. Bien que ce mémoire ne permette pas d’affirmer exactement comme les enseignants motivent leurs élèves, il a néanmoins permis de définir quelques axes principaux et créé quelques liens entre différentes notions.
description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
The chemical composition of red giants in 47 Tucanae I: Fundamental parameters and chemical abundance patterns
Creators: name: Thygesen, A. O.
name: Sbordone, L.
name: Andrievsky, S.
name: Korotin, S.
name: Yong, D.
name: Zaggia, S.
name: Ludwig, H. -G.
name: Collet, R.
name: Asplund, M.
name: D'Antona, F.
name: Meléndez, J.
name: D'Ercole, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: The study of chemical abundance patterns in globular clusters is of key importance to constrain the different candidates for intra-cluster pollution of light elements. Aims: We aim at deriving accurate abundances for a large range of elements in the globular cluster 47 Tucanae (NGC 104) to add new constraints to the pollution scenarios for this particular cluster, expanding the range of previously derived element abundances. Methods: Using tailored 1D LTE atmospheric models together with a combination of equivalent width measurements, LTE, and NLTE synthesis we derive stellar parameters and element abundances from high-resolution, high signal-to-noise spectra of 13 red giant stars near the tip of the RGB. Results: We derive abundances of a total 27 elements (O, Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Mo, Ru, Ba, La, Ce, Pr, Nd, Eu, Dy). Departures from LTE were taken into account for Na, Al and Ba. We find a mean [Fe/H] = $-0.78\pm0.07$ and $[α/{\rm Fe}]=0.34\pm0.03$ in good agreement with previous studies. The remaining elements show good agreement with the literature, but the inclusion of NLTE for Al has a significant impact on the behaviour of this key element. Conclusions: We confirm the presence of an Na-O anti-correlation in 47 Tucanae found by several other works. Our NLTE analysis of Al shifts the [Al/Fe] to lower values, indicating that this may be overestimated in earlier works. No evidence for an intrinsic variation is found in any of the remaining elements.
description: 22 pages, 16 figures. Accepted for publication in A&A
Iron Age enclosures at the Queensway Health Centre site, Hardwick Park, Wellingborough
Creators: name: Everson, Paul
Publisher: name: Archaeology Data Service
Year: 2020

description: Northamptonshire Archaeology, 11, 89-99
description: In the autumn of 1972 a development site on the western outskirts of Wellingborough was stripped for construction. The main feature was a curvilinear ditch forming the southern end of an enclosure. The pottery is dated to the middle Iron Age.
An Anti_Turing Test: Reduced Variables for Social Network Friends' Recommendations
Creators: name: Exman, Iaakov
name: Krepch, Alex
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Retrieval (cs.IR)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: H.3.3

description: A routine activity of social networks servers is to recommend candidate friends that one may know and stimulate addition of these people to one's contacts. An intriguing issue is how these recommendation lists are composed. This work investigates the main variables involved in the recommendation activity, in order to reproduce these lists including its time dependent characteristics. We propose relevant algorithms. Besides conventional approaches, such as friend_of_a_friend, two techniques of importance have not been emphasized in previous works: randomization and direct use of interestingness criteria. An automatic software tool to implement these techniques is proposed. Its architecture and implementation are discussed. After a preliminary analysis of actual data collected from social networks, the tool is used to simulate social network friends' recommendations.
description: 11 pages, 4 figures, Extended version of paper originally published in the SKY International Workshop on Software Knowledge, September 2013
Mather $β$-function for ellipses and rigidity
Creators: name: Bialy, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: The goal of the first part of this note is to get an explicit formula for rotation number and Mather $β$-function for ellipse. This is done here with the help of non-standard generating function of billiard problem. In this way the derivation especially simple. In the second part we discuss application of Mather $β$-function to rigidity problem.
O'ZBEKISTONDA MILLIY-HUDUDIY CHEGARALANISHDA SURXONDARYO OKRUGIDA RAHBAR XODIMLARNING MILLIY TARKIBIGA MUNOSABAT
Creators: name: Qorajayeva, Dilorom
Publisher: name: Zenodo
Year: 2023

description: Ushbu tadqiqot O'zbekistonning milliy-hududiy chegarasida joylashgan Surxondaryo tumanidagi rahbarlarning milliy tarkibiga munosabatini o'rganadi. Maqsad, odamlarning turli ma'lumoti, boshqa xususiyatlaridan kelib chiqishi bo'lgan liderlarni qanday qabul qilishini va ularga qanday munosabatda bo'lishini tushunish, xususan, ularning yetakchilik lavozimlarida xilma-xillik va inklyuzivlikka bo'lgan munosabatiga e'tibor qaratishdir. Miqdoriy so'rovlar va sifatli intervyular kombinatsiyasi orqali ushbu munosabatlarga ta'sir qiluvchi omillar haqida tushunchaga ega bo'lish uchun ma'lumotlar yig'iladi. Ushbu tadqiqot natijalari O'zbekiston kabi ko'p madaniyatli jamiyatda etnik va yetakchilik o'rtasidagi dinamikani yaxshiroq tushunishga yordam beradi.