cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Inferring the impact of feedback on the matter distribution using the Sunyaev Zel'dovich effect: Insights from CAMELS simulations and ACT+DES data
Creators: name: Pandey, Shivam
name: Lehman, Kai
name: Baxter, Eric J.
name: Ni, Yueying
name: Anglés-Alcázar, Daniel
name: Genel, Shy
name: Villaescusa-Navarro, Francisco
name: Delgado, Ana Maria
name: di Matteo, Tiziana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Feedback from active galactic nuclei and stellar processes changes the matter distribution on small scales, leading to significant systematic uncertainty in weak lensing constraints on cosmology. We investigate how the observable properties of group-scale halos can constrain feedback's impact on the matter distribution using Cosmology and Astrophysics with MachinE Learning Simulations (CAMELS). Extending the results of previous work to smaller halo masses and higher wavenumber, $k$, we find that the baryon fraction in halos contains significant information about the impact of feedback on the matter power spectrum. We explore how the thermal Sunyaev Zel'dovich (tSZ) signal from group-scale halos contains similar information. Using recent Dark Energy Survey (DES) weak lensing and Atacama Cosmology Telescope (ACT) tSZ cross-correlation measurements and models trained on CAMELS, we obtain $10\%$ constraints on feedback effects on the power spectrum at $k \sim 5\, h/{\rm Mpc}$. We show that with future surveys, it will be possible to constrain baryonic effects on the power spectrum to $\mathcal{O}(<1\%)$ at $k = 1\, h/{\rm Mpc}$ and $\mathcal{O}(3\%)$ at $k = 5\, h/{\rm Mpc}$ using the methods that we introduce here. Finally, we investigate the impact of feedback on the matter bispectrum, finding that tSZ observables are highly informative in this case.
description: 18 pages, 15 figures. Comments are welcome
The Raunds Area Project: second interim report
Creators: name: Dix
Publisher: name: Archaeology Data Service
Year: 2020

description: Northamptonshire Archaeology, 21, 3-29
description: Summary reports on the Irthlingborough barrows, the West Cotton ritual complex, the Crow Hill rectangular ?hillfort with Romano-British and Saxon occupation, the Stanwick Roman villa (mosaics) and large series of enclosures, the Mallows Cotton Roman settlement, the Saxon-medieval occupation at north Raunds, and the West Cotton Saxon-medieval hamlet
Expert susceptibility to deception when discriminating between genuine and deceptive actions
Creators: name: Warren-West, Laurence
Publisher: name: Loughborough University
Year: 2021
Subjects: Other health sciences not elsewhere classified

description: The overarching aim of the current research programme was to gain further insight into expertise and perception of deception. In particular, expert athletes’ susceptibility to deception. In order to achieve this, four experimental studies were conducted, each of which addressed a specific research question. In the first study, rugby players’ susceptibility to, and detection of, deception were examined using earlier times of occlusion than previous perception research. In doing so, it was the first study to examine performer susceptibility to deception. All rugby players, regardless of expertise, were susceptible to deception. Although, experts were less susceptible and displayed a greater ability to detect deception as an action unfolded. The second study examined skill-based differences in perception of deception using the temporal occlusion paradigm. Specifically, how the expert perceptual advantage translated to full-body responses and whether realistic responses provide a more sensitive measure of deception. Analysis of physical responses showed that high-skilled players were less susceptible to deception than recreational players. Moreover, high-skilled players were able to detect deceptive intent earlier than recreational players, reflected by more effective full-body responses. The third study investigated the kinematic differences between deceptive and genuine actions during the time window in which players are susceptible to deception. Statistical Parameter Mapping analysis indicated that to deceive an opponent, expert performers use a combination of exaggerated and minimised cues, relative to the kinematics of genuine actions, prior to the initial fake change of direction. From the differences between actions, candidates for the cause(s) of deception were proposed. The final study examined the effect of systematically exaggerated kinematics on the ability to discriminate between genuine and deceptive actions. Through the use of linear morphed motion capture data, it was revealed that players were more susceptible to deception when the kinematics of the movement were exaggerated and that skill groups were equally sensitive to exaggerated cues. In addition, high-skilled players were more able to discriminate between actions and less biased toward judging actions to be of genuine intent, relative to recreational players. These findings have implications from a theoretical perspective by reconceptualising athlete perception of deception, as well as an applied perspective concerning coaching and training practice. It is concluded that future research should explore the influence ii of segmental parameters, perceptual training interventions, and how postural cues and exaggeration combine with contextual information.
XAIR: A Framework of Explainable AI in Augmented Reality
Creators: name: Xu, Xuhai
name: Yu, Mengjie
name: Jonker, Tanya R.
name: Todi, Kashyap
name: Lu, Feiyu
name: Qian, Xun
name: Belo, João Marcelo Evangelista
name: Wang, Tianyi
name: Li, Michelle
name: Mun, Aran
name: Wu, Te-Yen
name: Shen, Junxiao
name: Zhang, Ting
name: Kokhlikyan, Narine
name: Wang, Fulton
name: Sorenson, Paul
name: Kim, Sophie Kahyun
name: Benko, Hrvoje
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: H.5.2; I.2.m
subject: 68U35

description: Explainable AI (XAI) has established itself as an important component of AI-driven interactive systems. With Augmented Reality (AR) becoming more integrated in daily lives, the role of XAI also becomes essential in AR because end-users will frequently interact with intelligent services. However, it is unclear how to design effective XAI experiences for AR. We propose XAIR, a design framework that addresses "when", "what", and "how" to provide explanations of AI output in AR. The framework was based on a multi-disciplinary literature review of XAI and HCI research, a large-scale survey probing 500+ end-users' preferences for AR-based explanations, and three workshops with 12 experts collecting their insights about XAI design in AR. XAIR's utility and effectiveness was verified via a study with 10 designers and another study with 12 end-users. XAIR can provide guidelines for designers, inspiring them to identify new design opportunities and achieve effective XAI designs in AR.
description: Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems
Ensemble averaging in JT gravity from entanglement in Matrix Quantum Mechanics
Creators: name: Di Ubaldo, Gabriele
name: Policastro, Giuseppe
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider the generalization of a matrix integral with arbitrary spectral curve $ρ_0(E)$ to a 0+1D theory of matrix quantum mechanics (MQM). Using recent techniques for 1D quantum systems at large-$N$, we formulate a hydrodynamical effective theory for the eigenvalues. The result is a simple 2D free boson BCFT on a curved background, describing the quantum fluctuations of the eigenvalues around $ρ_0(E)$, which is now the large-$N$ limit of the quantum expectation value of the eigenvalue density operator $\hatρ(E)$. The average over the ensemble of random matrices becomes a quantum expectation value. Equal-time density correlations reproduce the results (including non-perturbative corrections) of random matrix theory. This suggests an interpretation of JT gravity as dual to a $\textit{one-time-point}$ reduction of MQM. As an application, we compute the Rényi entropy associated to a bipartition of the eigenvalues. We match a previous result by Hartnoll and Mazenc for the $c=1$ matrix model dual to two-dimensional string theory and extend it to arbitrary $ρ_0(E)$. The hydrodynamical theory provides a clear picture of the emergence of spacetime in two dimensional string theory. The entropy is naturally finite and displays a large amount of short range entanglement, proportional to the microcanonical entropy. We also compute the reduced density matrix for a subset of $n
description: 29 pages + refs. No figures. v2 Added refs. and minor changes to discussion
On the Effects of Subvirial Initial Conditions and the Birth Temperature of R136
Creators: name: Caputo, Daniel
name: de Vries, Nathan
name: Zwart, Simon Portegies
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the effect of different initial virial temperatures, Q, on the dynamics of star clusters. We find that the virial temperature has a strong effect on many aspects of the resulting system, including among others: the fraction of bodies escaping from the system, the depth of the collapse of the system, and the strength of the mass segregation. These differences deem the practice of using "cold" initial conditions no longer a simple choice of convenience. The choice of initial virial temperature must be carefully considered as its impact on the remainder of the simulation can be profound. We discuss the pitfalls and aim to describe the general behavior of the collapse and the resultant system as a function of the virial temperature so that a well reasoned choice of initial virial temperature can be made. We make a correction to the previous theoretical estimate for the minimum radius, $R_{min}$, of the cluster at the deepest moment of collapse to include a Q dependency, $R_{min}\approx Q + N^{(-1/3)}$, where $N$ is the number of particles. We use our numerical results to infer more about the initial conditions of the young cluster R136. Based on our analysis, we find that R136 was likely formed with a rather cool, but not cold, initial virial temperature ($Q\approx 0.13$). Using the same analysis method, we examined 15 other young clusters and found the most common initial virial temperature to be between 0.18 and 0.25.
description: Accepted for publication in MNRAS
Complex critical points in Lorentzian spinfoam quantum gravity: 4-simplex amplitude and effective dynamics on double-$Δ_3$ complex
Creators: name: Han, Muxin
name: Liu, Hongguang
name: Qu, Dongxue
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The complex critical points are analyzed in the 4-dimensional Lorentzian Engle-Pereira-Rovelli-Livine (EPRL) spinfoam model in the large-$j$ regime. For the 4-simplex amplitude, taking into account the complex critical point generalizes the large-$j$ asymptotics to the situation with non-Regge boundary data and relates to the twisted geometry. For generic simplicial complexes, we present a general procedure to derive the effective theory of Regge geometries from the spinfoam amplitude in the large-$j$ regime by using the complex critical points. The effective theory is analyzed in detail for the spinfoam amplitude on the double-$Δ_3$ simplicial complex. We numerically compute the effective action and the solution of the effective equation of motion on the double-$Δ_3$ complex. The effective theory reproduces the classical Regge gravity when the Barbero-Immirzi parameter $γ$ is small.
description: 29 pages, 15 figures
title: Dialogues et regards croisés sur les pratiques de l’enseignant spécialisé
title: entre travail prescrit et travail réel, un espace de liberté à apprivoiser
titleType: Subtitle
Creators: name: Pecorelli, Tania
name: Utiger, Seraina
Publisher: name: Unknown
Year: 0
Subjects: subject: Enseignement spécialisé
subject: Rôles
subject: Compétences
subject: Adaptation
subject: Travail prescrit
subject: Travail réel

description: Quelle est la marge de manœuvre possible pour l’enseignant spécialisé dans son travail ? Quel espace de liberté entre le travail prescrit et le travail réel ? Quel rôle occupe-t-il ? Dans ce mémoire, ces interrogations sont discutées au travers de divers regards ; points de vue des auteurs, analyse de pratiques, entretiens effectués auprès d’enseignants spécialisés venant d’horizons variés. Ces moyens nous ont permis cette approche qualitative de la problématique. Cette recherche s’est basée sur l’écriture de notre pratique professionnelle, complétée par les entretiens menés auprès d’enseignants spécialisés. Ce travail aborde également diverses thématiques comme l’autonomie de l’enseignant spécialisé, ses compétences et la liberté de ses choix pédagogiques. Dans la pratique l’enseignant spécialisé est souvent amené à faire face à des situations imprévues en lien avec la dimension relationnelle de la profession. Les enseignants spécialisés font preuve d’adaptation et de spontanéité pour pallier aux événements fortuits. De ce fait, l’enseignant spécialisé portera un regard différent en fonction des situations vécues et son rôle se diversifiera en conséquence. L’écart entre le travail prescrit et le travail réel effectué sur le terrain est un espace à apprivoiser et à composer en fonction de multiples facteurs abordés au fil de ce mémoire.
description: Mémoire professionnel, Master of arts en enseignement spécialisé
title: L'inclusion scolaire
title: les conditions d'inclusion dans une classe régulière sont-elles toujours favorables aux élèves ?
titleType: Subtitle
Creators: name: Gonzalez Jaque, Lucia
Publisher: name: Unknown
Year: 0
Subjects: subject: inclusion scolaire
subject: instruments de l’inclusion
subject: projet EDUCO
subject: sentiment d’efficacité
subject: estime de soi
subject: perception du soutien de l’enseignant
subject: élèves en difficultés

description: L’inclusion scolaire des élèves ayant des besoins particuliers dans les classes ordinaires est maintenant une réalité dans le canton de Vaud, et plus précisément dans certaines écoles lausannoises. Les écoles se voulant inclusives mettent en place des projets éducatifs pour aider l’inclusion de ces élèves pour qu’ils puissent bénéficier des meilleures conditions assurant leurs apprentissages. Ainsi, les écoles cherchent l’épanouissement de chaque élève, indépendamment de sa manière de fonctionner. Cette étude analyse un de ces projets mis en place dans une école primaire du centre lausannois. Des dispositifs d’aide et de soutien ont été mis en place pour les élèves ayant des difficultés dans le but d’assurer une intégration totale à la vie de classe, tant au niveau pédagogique que social. Selon les caractéristiques de ce cas, les conditions de l’inclusion scolaire des élèves du projet sont-elles favorables à tous les élèves de la classe de 6P de cette école du centre lausannois? Se basant sur les interactions des élèves en difficultés avec les autres acteurs de la classe, ainsi que sur les différents instruments de l’inclusion scolaire, tels les scores d’estime de soi et du sentiment d’efficacité chez tous les élèves, cette étude établit que l’inclusion scolaire ne peut être optimale, et donc efficace que sous certaines conditions. L’étude montre par ailleurs que lorsque ces conditions ne sont pas respectées, les conséquences négatives de cette sorte de projets d’inclusion peuvent être néfastes pour tous les élèves, indépendamment de leur statut scolaire. C’est dans la planification de la mise en place de l’inclusion scolaire que se trouve la difficulté et c’est à ce niveau que la classe en question doit se reprendre.
description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
Big Fish in Small Ponds: Massive Stars in the Low Mass Clusters of M83
Creators: name: Andrews, J. E.
name: Calzetti, D.
name: Chandar, R.
name: Elmegreen, B. G.
name: Kennicutt, R. C.
name: Kim, Hwihyun
name: Krumholz, Mark. R.
name: Lee, J. C.
name: McElwee, Sean
name: O'Connell, R. W.
name: Whitmore, B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have used multi-wavelength Hubble Space Telescope WFC3 data of the starbursting spiral galaxy M83 in order to measure variations in the upper end of the stellar initial mass function (uIMF) using the production rate of ionizing photons in unresolved clusters with ages $\leq$ 8 Myr. As in earlier papers on M51 and NGC 4214, the upper end of the stellar IMF in M83 is consistent with an universal IMF, and stochastic sampling of the stellar populations in the $\lessapprox$ 10$^{3}$ Msun clusters are responsible for any deviations in this universality. The ensemble cluster population, as well as individual clusters, also imply that the most massive star in a cluster does not depend on the cluster mass. In fact, we have found that these small clusters seem to have an over-abundance of ionizing photons when compared to an expected universal or truncated IMF. This also suggests that the presence of massive stars in these clusters does not affect the star formation in a destructive way.
description: Accepted for publication in The Astrophysical Journal. arXiv admin note: substantial text overlap with arXiv:1302.5006
Quel est l'impact de l'abolition des enseignants spécialistes au profit des enseignants généralistes sur la qualité de l'enseignement musical dans les niveaux 7-8 Harmos ?
Creators: name: Marazzi, Paola
name: Ismaili, Arbresha
Publisher: name: Unknown
Year: 0

description: Suite à la votation du 4 septembre 2011, la nouvelle loi sur l’enseignement obligatoire est entrée en vigueur. Une des conséquences les plus importantes de cette nouvelle loi a été la primarisation des niveaux 5 et 6 selon l’ancien système. De cela a découlé l’attribution de l’ensemble des branches de l’enseignement vaudois à des enseignants généralistes. Nous faisons l’hypothèse qu’un des avantages de cette décision est la mise en avant des compétences pédagogiques dans la transmission des savoirs. Le bon sens nous mène à croire que les branches utilisées quotidiennement comme le français, les mathématiques et les langues étrangères peuvent être enseignées grâce à une bonne préparation pédagogique des enseignants. Certaines branches, par contre, nécessitent des aptitudes et des connaissances particulières. Nous entendons par ceci, les disciplines comme les travaux manuels (aptitudes psychomotrices et créatives), l’éducation physique (aptitudes psychomotrices, physiques et sociales), les arts visuels (aptitudes psychomotrices et créatives) et la musique (aptitudes psychomotrices, affectives et créatives). Nous faisons l’hypothèse que les branches créatives ne peuvent pas être enseignées par tout un chacun, car elles nécessitent un entraînement spécifique qui ne fait pas forcément partie des activités quotidiennes de l’enseignant primaire
description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
Proposition et application d'une méthodologie de mesure de l'utilisation de la tablette numérique dans les classes secondaires d'un établissement privé équipé depuis cinq ans
Creators: name: Moura, Ivan
Publisher: name: Unknown
Year: 0
Subjects: subject: Mesure
subject: utilisation
subject: tablette
subject: TIC
subject: enseignement
subject: one-to-one (1:1)

description: Le recours aux outils numériques dans le cadre de l’enseignement pose de nombreuses questions quant à leur utilité, leur plus-value, voire leur moins-value. Dans ce contexte, un établissement privé de la région genevoise équipe depuis quelques années l’ensemble de ses élèves et de son corps enseignant avec une tablette numérique. Dans le but mesurer l’utilisation qui est faite de ces tablettes, cet établissement a sollicité la HEP. Ce travail de mémoire vise à répondre à cette demande en proposant dans un premier temps une méthodologie qui établit des critères de mesures pertinents croisant divers types d’utilisation avec les dimensions des processus d’enseignement et d’apprentissage dans le cadre d’une enquête par questionnaires. Dans un deuxième temps, ce travail relate la mise en application de cette contribution théorique dans le contexte de cet établissement. Les résultats sont analysés et discutés puis – forts de résultats très positifs – les préalables à cette démarche d’octroi de tablettes sont confrontés à un référentiel pour l’intégration des outils numériques dans un environnement pédagogique.
description: Mémoire professionnel, Diplôme d'enseignement pour le degré secondaire II
Precision measurement of an electron pump at 2 GHz
Creators: name: Giblin, Stephen
name: Yamahata, Gento
name: Fujiwara, Akira
name: Kataoka, Masaya
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A well-characterised sample of silicon tunable-barrier electron pump has been operated at a frequency of 2 GHz using a custom drive waveform, generating a pump current of 320 pA. Precision measurements of the current were made as a function of pump control parameters, using a blind protocol, over a 7-week campaign. The combined standard uncertainty for each 10 hour measurement was 0.1 parts per million. The pump current exhibits a plateau along the exit gate voltage flat to approximately 0.1 parts per million, but offset from ef by 0.2 parts per million. This offset may be a sign of errors in the current traceability chain, indicating a limit to the accuracy of small current scaling using existing methods based on cryogenic current comparators.
description: 14 pages, 13 figures, including supplementary information in one file
An Iron Age enclosure at Wootton Hill Farm, Northampton
Creators: name: Jackson, Dennis A
Publisher: name: Archaeology Data Service
Year: 2020

description: Northamptonshire Archaeology, 22, 3-21
description: In 1985 advance works for new housing development revealed the deep ditch of a previously unknown Iron Age enclosure. Complete excavation in 1986 by the NCC Archaeological Unit was funded by HBMCE. The enclosure was situated on a spur at 97m OD with the Hunsbury hillfort 0.5km to the south on the highest point of the flattened ridge. The enclosure was square, 42m wide internally, an enclosed space of 0.18ha. The V-shaped enclosure ditch was 2.60-2.75m deep, with an entrance at the centre of the northern arm. Paired post-pits and slots inside the entrance show the presence of a timber gateway, probably set between the terminals of an internal bank. At the southern, downslope, end of the enclosure a gully set parallel to the ditch, probably provided drainage at the base of an internal bank. Within the enclosure there was a single roundhouse ring ditch in the NE corner and a curving ditch probably bounded an animal pen in the NW corner. A large four-post structure in the SW corner may have been a granary and perhaps also served as a watchtower. The site is dated to the late Iron Age, probably the 1st century BC, with a pottery assemblage broadly comparable to the material from the nearby hillfort. It is suggested that this was a satellite settlement to the hillfort, with the deep ditch suggesting that is designed for active defence. Other enclosures with similarly deep ditches are known within the county and beyond, but none are in such close association with a hillfort. Wootton Hill Farm has been adopted as the type-site for an English Heritage class of small late Iron Age enclosures with deep ditches.
The Roman villa at Great Weldon, Northamptonshire
Creators: name: Smith
name: Hird
name: Dix
Publisher: name: Archaeology Data Service
Year: 2020

description: Northamptonshire Archaeology, 22, 23-68
description: The villa was partly excavated and recorded in 1738 and re-excavated in 1953-6. Occupation of the site ranged from c.AD10-400. The first stone-footed structure was an oblong house with a veranda along at least part of one side. It had been destroyed by fire c. AD 200 and was replaced on the same site by a larger house with a corridor. A simple bath-suite lay at one end of the corridor and a separate circular building lay nearby. During the 4th century the main house was embellished with mosaic pavements and extensions of the structure included enlargements of the bath-suite. In front of the house lay a large walled enclosure. The N side of this was flanked by a 4th-century barn, twice destroyed by fire. Another outbuilding stood at the SE angle. Two burials were found N of the barn. The finds include iron-cinder of the period of the first house, derived from large iron smelting furnaces, and carbonised grain and seeds from the barn.
NLO+NLL limits on W' and Z' gauge boson masses in general extensions of the Standard Model
Creators: name: Jezo, T.
name: Klasen, M.
name: Lamprea, D. R.
name: Lyonnet, F.
name: Schienbein, I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: QCD resummation predictions for the production of charged (W') and neutral (Z') heavy gauge bosons decaying leptonically are presented. The results of our resummation code at next-to-leading order and next-to-leading logarithmic (NLO+NLL) accuracy are compared to Monte Carlo predictions obtained with PYTHIA at leading order (LO) supplemented with parton showers (PS) and FEWZ at NLO and next-to-next-to-leading order (NNLO) for the $p_T$-differential and total cross sections in the Sequential Standard Model (SSM) and general SU(2)xSU(2)xU(1) models. The LO+PS Monte Carlo and NNLO fixed-order predictions are shown to agree approximately with those at NLO+NLL at small and intermediate $p_T$, respectively, and the importance of resummation for total cross sections is shown to increase with the gauge boson mass. The theoretical uncertainties are estimated by variations of the renormalisation/factorisation scales and of the parton densities, the former being significantly reduced by the resummation procedure. New limits at NLO+NLL on W' and Z' boson masses are obtained by reinterpreting the latest ATLAS and CMS results in general extensions of the Standard Model.
description: 26 pages, 10 figures, 6 tables
The Anglo-Saxon cemetery at Wakerley, Northamptonshire: Excavations by Mr D Jackson, 1968-9
Creators: name: Williams, David
name: Jackson, Dennis A
name: Badenoch
Publisher: name: Archaeology Data Service
Year: 2020

description: Northamptonshire Archaeology, 22, 69-178
description: The excavation of the Anglo-Cemetery at Wakerley was undertaken between 1968 and 1969 by Mr Dennis Jackson for the Department of the Environment in advance of open-cast iron working. Eighty-five graves were excavated under difficult circumstances, the finds being conserved by the Department of the Environment. It was seen that the cemetery was laid out within a fairly short space of time, although a single period (eg plague) burial has been rejected in favour of a 6th- to early 7th-century date range, covering more than one generation. A group of later 7th-century graves, excavated after the 1968/69 seasons, has been discussed, but it must be stressed that this group was separate from the main cemetery. Grave goods were a mixture of cheap items such as small-long brooches or swastika brooches, with good quality square-headed and florid cruciform. Unusual items included a drinking horn; a lozenge-shaped mount, perhaps from a harness set; a complete example of a florid cruciform brooch of Leeds' type Vj; and a runic inscription scratched on a square-headed brooch. Most pottery was of the plain domestic type with a very few decorated vessels. All the cultural indications suggested second generation settlers using a hybrid Anglo-Saxon grave furniture. Specialist reports were submitted on the pottery and the skeletal and textile remains. From the latter came evidence for a possible coloured pattern weave. Presence of Iron Age and Roman settlement and industry nearby was seen to have had a possible influence on the choice of Wakerley as a settlement. Nevertheless, no continuity could be ascertained between Roman and Saxon settlement or industry.
title: Comment les enfants vivent-ils leur entrée dans la scolarité selon le point de vue des parents et des enseignants ?
title: quel rôle une structure de garde antérieure peut-elle avoir lors de cette transition ?
titleType: Subtitle
Creators: name: Pingeon, Coline
name: Pricam, Alexia
Publisher: name: Unknown
Year: 0
Subjects: subject: Ecole enfantine
subject: rupture
subject: continuité
subject: modes de garde
subject: entrée dans la scolarité
subject: transition

description: Dans notre travail, nous avons décidé d’étudier le vécu par l’enfant de l’entrée à l’école, selon les parents et les enseignants. Nous nous sommes donc posé la question suivante : Comment les enfants vivent-ils leur entrée dans la scolarité selon le point de vue des parents et des enseignants ? Plus précisément, nous nous sommes dirigées sur les influences des modes de garde sur la rentrée dans la scolarité obligatoire en nous posant une deuxième question : Quel rôle une structure de garde antérieure peut-elle avoir lors de cette transition ? Afin de répondre à nos questions, nous nous sommes concentrées sur trois dimensions : l’entrée dans la scolarité, la rupture et la continuité. Celles-ci sont centrales dans le thème de l’entrée dans la scolarité. Nous avons posé l’hypothèse que le mode de garde vécu par l’enfant durant les premières années de sa vie allait influencer positivement ou négativement son entrée dans l’école. Afin de développer notre hypothèse, nous avons choisi deux outils, adressés aux deux acteurs qui entourent l’enfant, l’acteur principal lors de cette transition. Ceux-ci nous ont permis de récolter nos données : l’entretien semi-directif adressé à six enseignantes, et le questionnaire adressé à une cinquantaine de parents d’élève de 1P. Suite à cette récolte, nous avons mis en contraste et comparé les différents points de vue pour ensuite rédiger notre analyse. Notre travail nous a permis de poser un regard plus large sur notre hypothèse de départ. Elle a pu ainsi être confirmée sur certains points et infirmée sur d’autres. Pour la première question, nous avons remarqué que les parents et les enseignants avaient un avis qui se rejoignait : beaucoup d’enfants vivent leur entrée dans la scolarité sereinement. Quant à la deuxième question, le mode de garde peut, parfois, influencer cette transition. En outre, nous avons découvert d’autres facteurs déterminants qui influencent la transition. Celle-ci dépend également beaucoup de l’enfant, des parents et des enseignants.
description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
Dust emission in star-forming dwarf galaxies: General properties and the nature of the sub-mm excess
Creators: name: Izotov, Y. I.
name: Guseva, N. G.
name: Fricke, K. J.
name: Krugel, E.
name: Henkel, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We studied the global characteristics of dust emission in a large sample of emission-line star-forming galaxies. The sample consists of two subsamples. One subsample (SDSS sample) includes ~4000 compact star-forming galaxies from the SDSS, which were also detected in all four bands at 3.4, 4.6, 12, and 22 mum of the WISE all-sky survey. The second subsample (Herschel sample) is a sample of 28 compact star-forming galaxies observed with Herschel in the FIR range. Data of the Herschel sample were supplemented by the photometric data from the Spitzer observations, GALEX, SDSS, WISE, 2MASS, NVSS, and FIRST surveys, as well as optical and Spitzer spectra and data in sub-mm and radio ranges. It is found that warm dust luminosities of galaxies from the SDSS sample and cold and warm dust luminosities of galaxies from the Herschel sample are strongly correlated with Hbeta luminosities, which implies that one of the main sources of dust heating in star-forming galaxies is ionising UV radiation of young stars. Using the relation between warm and cold dust masses for estimating the total dust mass in star-forming galaxies with an accuracy better than ~0.5 dex is proposed. On the other hand, it is shown for both samples that dust temperatures do not depend on the metallicities. The dust-to-neutral gas mass ratio strongly declines with decreasing metallicity, similar to that found in other studies of local emission-line galaxies, high-redshift GRB hosts, and DLAs. On the other hand, the dust-to-ionised gas mass ratio is about one hundred times as high implying that most of dust is located in the neutral gas. It is found that thermal free-free emission of ionised gas in compact star-forming galaxies might be responsible for the sub-mm emission excess. This effect is stronger in galaxies with lower metallicities and is also positively affected by an increased star-formation rate.
description: 22 pages, 15 figures, accepted for publication in Astronomy and Astrophysics
Charged pion electric polarizability from four-point functions in lattice QCD
Creators: name: Lee, Frank X.
name: Alexandru, Andrei
name: Culver, Chris
name: Wilcox, Walter
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Polarizabilities reveal valuable information on the internal structure of hadrons in terms of charge and current distributions. For neutral hadrons, the standard approach is the background field method. But for a charged hadron, its acceleration under the applied field complicates the isolation of the polarization energy. In this work, we explore an alternative method based on four-point functions in lattice QCD. The approach offers a transparent picture on how polarizabilities arise from photon, quark, and gluon interactions. We carry out a proof-of-concept simulation on the electric polarizability of a charged pion, using quenched Wilson action on a $24^3\times 48$ lattice at $β=6.0$ with pion mass from 1100 to 370 MeV. We show in detail the evaluation and analysis of the four-point correlation functions and report results on charge radius and electric polarizability. Our results from connected diagrams suggest that charged pion $α_E$ is due to a cancellation between elastic and inelastic contributions. It would be interesting to see how the cancellation plays out at smaller pion masses in future simulations.
description: 24 pages, 13 figures, 2 tables. Version accepted for publication in PRD
title: Allô les fables, ici l'école
title: des morales au coeur de l'enseignement
titleType: Subtitle
Creators: name: Lacroix, Julie
name: Lincio, Marie-Camille
Publisher: name: Unknown
Year: 0
Subjects: subject: Fable
subject: Développement du jugement moral
subject: Ingénierie didactique
subject: Didactique du français
subject: Discussion philosophique.

description: La recherche qui suit se situe dans la didactique du français. Par une étude approfondie de fables et de leur enseignement, nous cherchons à identifier leurs effets dans le développement du jugement moral des élèves. Nous avons donc monté une ingénierie didactique pour mener une étude comparative entre deux classes. Dans la première, nous avons testé l’entier de notre dispositif d’enseignement, à savoir deux situations initiales, deux séquences d’enseignement sur les fables de La Fontaine, La Colombe et la Fourmi et L’Âne vêtu de la peau du lion et trois situations finales. Les deux fables travaillées avec les élèves devaient aboutir à une discussion philosophique liée, non seulement à la morale de la fable, mais également à des situations du quotidien. Dans la seconde classe, nous avons proposé les situations initiales aux enfants, suivies des lectures-cadeau des deux fables étudiées par l’autre classe et enfin, les situations finales. Nos situations initiales et finales présentent toutes une situation quotidienne, liée à la morale d’une fable. Il a été demandé aux élèves d’argumenter l’attitude qu’ils adopteraient dans cette situation de dilemme. Nous avons, par la suite, classé les arguments des deux classes selon les stades du jugement moral de Kohlberg (1976). Dès ce classement fait, nous avons comparé les résultats des deux classes, en fonction des différentes situations pour aboutir au constat de la réussite partielle de notre recherche. En effet, le dispositif d’enseignement est concluant pour les élèves se trouvant au niveau conventionnel qui correspond au niveau standard du développement du jugement moral, défini par Kohlberg (1976). Cependant, nous avons pu observer que notre dispositif avait tendance à fragiliser les élèves qui se trouvaient au niveau pré-conventionnel, soit les jeunes enfants, car notre enseignement était encore trop abstrait pour eux. Enfin, pour le niveau post-conventionnel, soit une capacité de jugement élevée atteinte par une minorité, le peu de résultats nous laisse penser que notre dispositif serait bénéfique dans le développement du jugement moral, mais nous ne pouvons l’affirmer avec certitude.
description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
Ditchford Bridge, Irchester, Northamptonshire
Creators: name: McKeague
Publisher: name: Archaeology Data Service
Year: 2020

description: Northamptonshire Archaeology, 22, 179-184
description: Archaeological recording of Ditchford Bridge, Irchester, was carried out in advance of and during major repairs to both causewayed approaches of the bridge. Survey results indicated that much of medieval bridge had been extensively refaced or rebuilt.
A method to suppress dielectric breakdowns in liquid argon ionization detectors for cathode to ground distances of several millimeters
Creators: name: Auger, M.
name: Ereditato, A.
name: Goeldi, D.
name: Janos, S.
name: Kreslo, I.
name: Luethi, M.
name: von Rohr, C. Rudolf
name: Strauss, T.
name: Tolba, T.
name: Weber, M. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a method to reach electric field intensity as high as 400 kV/cm in liquid argon for cathode-ground distances of several millimeters. This can be achieved by suppressing field emission from the cathode, overcoming limitations that we reported earlier.
Co-evolution of Dust and Chemistry in Galaxy Simulations with a Resolved Interstellar Medium
Creators: name: Hu, Chia-Yu
name: Sternberg, Amiel
name: van Dishoeck, Ewine F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Nearby dwarf irregular galaxies are ideal laboratories for studying the interstellar medium (ISM) at low metallicity, which is expected to be common for galaxies at very high redshift being observed by the James Webb Space Telescope. We present the first high-resolution ($\sim 0.2$~pc) hydrodynamical simulations of an isolated low-metallicity ($0.1~Z_\odot$) dwarf galaxy coupled with a time-dependent chemistry network and a dust evolution model where dust is locally produced and destroyed by various processes. To accurately model carbon monoxide (CO), we post-process the simulations with a detailed chemistry network including the time-dependent effect of molecular hydrogen (H$_2$). Our model successfully reproduces the observed star formation rate and CO(1-0) luminosity ($L_{\rm CO}$). We find that dust growth in dense gas is required to reproduce the observed $L_{\rm CO}$ as otherwise CO would be completely photodissociated. In contrast, the H$_2$ abundance is extremely small and is insensitive to dust growth, leading to a CO-to-H$_2$ conversion factor that is only slightly higher than the Milky Way value despite the low metallicity. An observationally inferred dust-to-gas ratio is thus underestimated if adopting the metallicity-dependent CO-to-H$_2$ conversion factor. The newly-produced dust in dense gas mixes with the ISM through supernova feedback without being completely destroyed by sputtering, which leads to galactic outflows 20% - 50% dustier than the ISM, providing a possible source for intergalactic dust.
description: ApJ accepted. 19 pages, 10 figures
Gérer les difficultés de comportement en classe
Creators: name: Aeberhard, Christen
name: Berneker, Claire
Publisher: name: Unknown
Year: 0
Subjects: subject: Enseignant
subject: gestion des difficultés de comportement
subject: moyen
subject: prévention
subject: primaire
subject: pratiques déclarées

description: La gestion des difficultés de comportement est un réel défi pour les enseignants. En effet, ces comportements peuvent rapidement nuire au bon fonctionnement de la classe, car l’attention de l’enseignant est partagée entre la gestion de ces comportements perturbateurs et le reste de la classe. C’est pour cela que nous avons décidé de diriger notre travail sur ce sujet. La question que nous nous sommes donc posée est: Quelles sont les méthodes les plus fréquemment utilisées par les enseignants de classes régulières des cycles un et deux dans la gestion des comportements difficiles. Le but de notre recherche est donc de mettre en lumière les pratiques les plus utilisées par les enseignants et de voir si cela correspond à ce qui est prescrit dans la littérature. Nous nous sommes intéressé essentiellement à ce qui peut être mis en place par l’enseignant lui-même et qui ne demande pas l’aide d’un spécialiste. Il nous a donc semblé pertinent d’interroger les pratiques déclarées des enseignants afin de voir quels sont les moyens les plus utilisés. Pour ce faire, nous nous sommes basé sur un questionnaire permettant de mesurer la fréquence, l’efficacité ainsi que la faisabilité de divers moyens, créé dans le cadre d’une étude menée au Québec. Cependant, nous avons dû, par soucis de faisabilité, choisir uniquement de questionner les enseignants sur leur fréquence d’utilisation de ces divers moyens. Nous avons ensuite distribué les questionnaires dans deux établissements du canton de Vaud. En parallèle à cela, nous avons fait une revue de la littérature concernant la compréhension, la prévention ainsi que la gestion des difficultés de comportement. C’est grâce à ce cadre théorique que nous avons pu analyser et discuter nos résultats. Les résultats de notre recherche nous ont permis de voir que l’ « aménagement de la classe » est la dimension la plus fréquemment utilisée par les enseignants. Ceci est significatif, car il s’agit de moyens qui sont mis en place pour prévenir les comportements difficiles. Il est aussi intéressant de noter que la dimension du « renforcement » fait partie des moyens les moins utilisés alors que les recherches montrent la réelle efficacité de cette méthode.
description: Mémoire professionnel, Bachelor of arts en enseignement pour les degrés préscolaire et primaire
The HST/ACS Coma Cluster Survey. X. Nuclear star clusters in low-mass early-type galaxies: scaling relations
Creators: name: Brok, Mark den
name: Peletier, Reynier F.
name: Seth, Anil
name: Balcells, Marc
name: Dominguez, Lilian
name: Graham, Alister W.
name: Carter, David
name: Erwin, Peter
name: Ferguson, Henry C.
name: Goudfrooij, Paul
name: Guzman, Rafael
name: Hoyos, Carlos
name: Jogee, Shardha
name: Lucey, John
name: Phillipps, Steven
name: Puzia, Thomas
name: Valentijn, Edwin
name: Kleijn, Gijs Verdoes
name: Weinzirl, Tim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present scaling relations between structural properties of nuclear star clusters and their host galaxies for a sample of early-type dwarf galaxies observed as part of the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) Coma Cluster Survey. We have analysed the light profiles of 200 early-type dwarf galaxies in the magnitude range $16.0 < m_{F814W} < 22.6 $ mag, corresponding to $-19.0 < M_{F814W} < -12.4 $ mag. Nuclear star clusters are detected in 80% of the galaxies, thus doubling the sample of HST-observed early-type dwarf galaxies with nuclear star clusters. \changed{We confirm that the} nuclear star cluster detection fraction decreases strongly toward faint magnitudes. The luminosities of nuclear star clusters do not scale linearly with host galaxy luminosity. A linear fit yields L$_{nuc} \sim $L$_{gal}^{0.57\pm0.05}$. The nuclear star cluster-host galaxy luminosity scaling relation for low-mass early-type dwarf galaxies is consistent with formation by globular cluster accretion. We find that at similar luminosities, galaxies with higher Sérsic indices have slightly more luminous nuclear star clusters. Rounder galaxies have on average more luminous clusters. Some of the nuclear star clusters are resolved, despite the distance of Coma. We argue that the relation between nuclear star cluster mass and size is consistent with both formation by globular cluster accretion and in situ formation. Our data are consistent with GC inspiraling being the dominant mechanism at low masses, although the observed trend with Sérsic index suggests that in situ star formation is an important second order effect.
description: Accepted for publication in MNRAS
Long-duration Gamma-ray Burst Progenitors and Magnetar Formation
Creators: name: Song, Cui-Ying
name: Liu, Tong
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Millisecond magnetars produced in the center of dying massive stars are one prominent model to power gamma-ray bursts (GRBs). However, their detailed nature remains a mystery. To explore the effects of the initial mass, rotation rate, wind mass loss, and metallicity on the GRB progenitors and the newborn magnetar properties, we evolve 227 of $10-30~M_\odot$ single star models from the pre-main-sequence to core collapse by using the stellar evolution code MESA. The pre-supernova properties, the compactness parameter, and magnetar characteristics of models with different initial parameters are presented. The compactness parameter remains a non-monotonic function of the initial mass and initial rotation rate when the effects of vary metallicity and ``Dutch'' wind scale factor are taken into account. We find that the initial rotation rate and mass play the dominant roles in whether a star can evolve into a GRB progenitor. The minimum rotation rate necessary to generate a magnetar gradually reduces as the initial mass increases. The greater the initial metallicity and ``Dutch'' wind scale factor, the larger the minimum rotation rate required to produce a magnetar. In other words, massive stars with low metallicity are more likely to harbor magnetars. Furthermore, we present the estimated period, magnetic field strength, and masses of magnetars in all cases. The typical rotational energy of these millisecond magnetars is sufficient to power long-duration GRBs.
description: 32 pages, 12 figures in main text, 1 table in appendix, accepted for publication in ApJ