USURJ: University of Saskatchewan Undergraduate Research Journal
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Cover Artwork: "The Art of Henna in Rural Pakistan"
No full textWarsha Mushtaq is an honours student, majoring in history at the University of Saskatchewan
From debris to remains, an experimental protocol under emergency conditions
No full textInternational audienceThe treatment of the rubble from the fire at the cathedral of Notre-Dame de Paris was the subject of an unprecedented protocol, drafted jointly by several departments of the ministère de la Culture and implemented by these same teams, assisted by compagnons (workers, foremen, forklift operators, automatic machine operators) present on the safety site. The aim of this approach, which was implemented immediately after the disaster, was to identify, from amongst all the collapsed materials on the floor and on the vaults, those that could be recovered, both for restoration purposes and for long-term scientific research - thus passing from the status of debris to that of vestiges. A sampling protocol, using robotic equipment on the ground and rope access technicians on the vaults, was thus organised to document and locate each material recovered (photographs, orthophotographs, geolocation): material specialists and archaeologists took turns for nearly twenty-four (24) months, in a context of lead pollution and according to an extremely constrained schedule, to carry out this sorting and draw up an initial inventory. At the end of this first phase of the scientific project, nearly ten thousand (10,000) pieces of timber, six hundred and fifty (650) pallets of stone items and three hundred and fifty (350) pallets of metal items are now stored in warehouses rented by the project management team, under the responsibility of the ministère de la Culture, and are currently the subject of a detailed inventory. All of the vestiges collected will thus be able to be used for the restoration of the building and, through the many research programmes already underway, contribute to a renewed knowledge of the cathedral of Notre-Dame de Paris
Cartesian Fibrations of -categories
No full text31 pages, comments are welcome!International audienceIn this article we introduce four variance flavours of cartesian 2-fibrations of -bicategories with -bicategorical fibres, in the framework of scaled simplicial sets. Given a map of -bicategories, we define -(co)cartesian arrows and inner/outer triangles by means of lifting properties against . Inner/outer (co)cartesian 2-fibrations are then defined to be maps with enough (co)cartesian lifts for arrows and enough inner/outer lifts for triangles, together with a compatibility property with respect to whiskerings in the outer case. By doing so, we also recover in particular the case of -bicategories fibred in -categories studied in previous work. We also prove that equivalences of such 2-fibrations can be tested fiberwise. As a motivating example, we show that the domain projection is a prototypical example of an outer cartesian 2-fibration, where denotes the -bicategory of functors, lax natural transformations and modifications. We then define inner/outer (co)cartesian 2-fibrations of categories enriched in -categories, and we show that a fibration of such categories is a (co)cartesian inner/outer 2-fibration if and only if the corresponding is a fibration of this type between -bicategories
En couple. Historiennes et historiens de l'art au travail
No full textInternational audienceBernard Berenson and Mary Logan ; Galienne and Pierre Francastel ; Adolph Goldschmidt and Wilhelm Vöge ; Margot and Rudolf Wittkower ; Richard and Trude Krautheimer ; Gabrielle and Léon Rosenthal ; Clementina Anstruther-Thomson and Vernon Lee ; Léon and Sylvia Pressouyre ; Georges-Henri Rivière and Nina Spalding Stevens… Many pair working art historians offer food for thought. However, four-handed writings, the unequal reception of their authors, and private or public associations have rarely attracted the attention of art historians concerned with the history of the discipline. This collective volume aims to explore the possibilities offered – or not – by the couple as well as the distribution of knowledge and tasks within it. By considering the couple as two people united in an activity, the texts gathered here examine its scholarly achievements through the questions of hierarchy, strategy, rivalry and self-effacement that are at work in it, following a still unexplored path in the history of ideas and intellectual processes.Bernard Berenson et Mary Logan ; Galienne et Pierre Francastel ; Adolph Goldschmidt et Wilhelm Vöge ; Margot et Rudolf Wittkower ; Richard et Trude Krautheimer ; Gabrielle et Léon Rosenthal ; Clementina Anstruther-Thomson et Vernon Lee ; Léon et Sylvia Pressouyre ; Georges-Henri Rivière et Nina Spalding Stevens… Nombreux sont les couples d’historiennes et d’historiens de l’art qui offrent matière à réflexion. Les écrits à quatre mains, la postérité inégale de leurs auteurs, les associations privées ou publiques n’ont toutefois que rarement retenu l’attention des chercheurs soucieux d’interroger l’histoire de leur discipline. Ce volume collectif vise à explorer les possibilités offertes – ou non – par le couple ainsi que la répartition des savoirs et des tâches en son sein. En considérant le couple comme une réunion de deux personnes dans une activité, l’ensemble des textes rassemblés ici examine ses productions scientifiques à travers les questions de hiérarchie, stratégie, rivalité et effacement de soi qui y sont à l’œuvre, suivant une voie encore peu empruntée dans l’histoire des idées et des processus intellectuels
Les outils et les parures en matière osseuse
No full textInternational audienceThis monograph presents the findings at Beaumont "le Crot aux Moines" (Yonne), a remarkable archaeological site of the Chasséen Culture. Enclosures, fireplaces and circular structures, with exceptionally abundant associated material, document and renew the regional Chasséen Culture. The high datation of the site's oldest structures, around 4500 BCE, raises the question of the emergence of this culture in Burgundy.Cette monographie présente les vestiges du site de Beaumont (Yonne), un gisement archéologique remarquable. Enceintes, foyers et structures circulaires auxquels un matériel exceptionnellement abondant est associé, documentent tout en les renouvelant le Chasséen régional. La haute datation des plus anciennes structures du site, autour de 4500 BCE, pose la question de l'émergence de cette culture en Bourgogne
Observation of production in collisions at TeV with the ATLAS detector
No full textInternational audienceThis Letter reports the observation of production and a measurement of its cross-section using 140.1 1.2 fb of proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. The production cross-section, with both the and bosons decaying leptonically, (), is measured in a fiducial phase-space region defined such that the leptons and the photon have high transverse momentum and the photon is isolated. The cross-section is found to be 2.01 0.30 (stat.) 0.16 (syst) fb. The corresponding Standard Model predicted cross-section calculated at next-to-leading order in perturbative quantum chromodynamics and at leading order in the electroweak coupling constant is 1.50 0.06 fb. The observed significance of the signal is 6.3, compared with an expected significance of 5.0
Search for non-resonant production of semi-visible jets using Run~2 data in ATLAS
No full textInternational audienceSemi-visible jets, with a significant contribution to the event's missing transverse momentum, can arise in strongly interacting dark sectors. This results in an event topology where one of the jets can be aligned with the direction of the missing transverse momentum. A search for semi-visible jets produced via a -channel mediator exchange is presented. The analysis uses collisions with an integrated luminosity of 139 fb and a centre-of-mass energy of 13 TeV, collected with the ATLAS detector during Run 2 of the LHC. No excess over Standard Model predictions is observed. Assuming a coupling strength of unity between the mediator, a Standard Model quark and a dark quark, mediator masses up to 2.7 TeV can be excluded at the 95% confidence level. Upper limits on the coupling strength are also derived