Photographies et monuments historiques : les fonds photographiques de la Médiathèque de l’architecture et du patrimoine

La collection de photographies que conserve la Médiathèque de l’architecture et du patrimoine a été constituée par la commission des monuments historiques à partir de 1851. Elles ont été réalisées pour des raisons diverses : pour documenter un édifice et suivre des restaurations, des reconstructions, voire des constructions. Elles sont aussi des outils de contrôle qui permettent de juger de la pertinence d’un projet de restauration et d’apprécier les résultats obtenus. Au XIXe siècle, la collaboration entre des photographes professionnels et la commission a produit des séries de prises de vues très systématiques. L’apparition d’une photographie « aide-mémoire » qui privilégie les vues de détails est liée à l’évolution du matériel photographique. Ces photographies révèlent aussi la diversité des solutions et des choix techniques des constructeurs et des restaurateurs. Confrontées aux sources textuelles et graphiques, elles peuvent inviter à une relecture de l’histoire des monuments.MAP’s collection of photographs was created by the French Commission des monuments historiques back in 1851. Those photos were taken for various reasons: the documentation of a building, restorations, reconstructions and even constructions. They act also as control tools that gauge the relevance of a restoration project while assessing its results. During the 19th century, the bond between professional photographs and the Commission produced series of systematic shootings. The arrival of a kind of “aide-memoire” photography, that put the emphasis on detailed views, is linked with the evolution of photographic technology. These photos also reveal the variety of solutions as well as technical choices from both the builders and the restorers. They allow to have a fresh look on the history of registered historic monuments as they are confronted with graphic and textual sources.Die in der MAP verwahrte Fotosammlung ist seit 1851 von der Commission des monuments historiques aufgebaut worden. Die Aufnahmen sind zu unterschiedlichem Zweck produziert worden : um einen Bau zu dokumentieren, um Restaurierungsarbeiten, aber auch Rekonstruktionen und Neubauten zu verfolgen ; auch stellen sie ein Kontrollwerkzeug dar, das es erlaubt, die korrekte Ausführung eines Restaurierungsprojektes zu verfolgen und deren Ergebnisse zu bewerten. Im 19. Jahrhundert entstehen aus der Zusammenarbeit von professionellen Fotografen und der Commission eine Reihe systematischer Fotoserien. Durch die Weiterentwicklung des Materials entstehen immer mehr Detailaufnahmen, die zu einer Art "Merkblatt" zusammengestellt werden. Die Bestände der MAP zeugen darüber hinaus von einer großen Breite an restauratorischen und technischen Lösungen der Konservatoren und Restauratoren. Als Ergänzung zu schriftlichen und zeichnerischen Quellen erlauben die fotografischen Aufnahmen eine Neubewertung der Geschichte der Denkmalpflege

Psychosocial work and home stressors predict sickness absence from work

info:eu-repo/semantics/nonPublishe

Dietary lipids fuel GPX4-restricted enteritis resembling Crohn’s disease

Abstract: The increased incidence of inflammatory bowel disease (IBD) has become a global phenomenon that could be related to adoption of a Western life-style. Westernization of dietary habits is partly characterized by enrichment with the ω-6 polyunsaturated fatty acid (PUFA) arachidonic acid (AA), which entails risk for developing IBD. Glutathione peroxidase 4 (GPX4) protects against lipid peroxidation (LPO) and cell death termed ferroptosis. We report that small intestinal epithelial cells (IECs) in Crohn’s disease (CD) exhibit impaired GPX4 activity and signs of LPO. PUFAs and specifically AA trigger a cytokine response of IECs which is restricted by GPX4. While GPX4 does not control AA metabolism, cytokine production is governed by similar mechanisms as ferroptosis. A PUFA-enriched Western diet triggers focal granuloma-like neutrophilic enteritis in mice that lack one allele of Gpx4 in IECs. Our study identifies dietary PUFAs as a trigger of GPX4-restricted mucosal inflammation phenocopying aspects of human CD

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV

Measurement of the top quark mass using charged particles in pp collisions at root s=8 TeV

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Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

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Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at root s=13 TeV

A search is presented for new particles produced at the LHC in proton-proton collisions at root s = 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis is based on a data sample corresponding to an integrated luminosity of 101 fb(-1), collected in 2017-2018 with the CMS detector. Machine learning techniques are used to define separate categories for events with narrow jets from initial-state radiation and events with large-radius jets consistent with a hadronic decay of a W or Z boson. A statistical combination is made with an earlier search based on a data sample of 36 fb(-1), collected in 2016. No significant excess of events is observed with respect to the standard model background expectation determined from control samples in data. The results are interpreted in terms of limits on the branching fraction of an invisible decay of the Higgs boson, as well as constraints on simplified models of dark matter, on first-generation scalar leptoquarks decaying to quarks and neutrinos, and on models with large extra dimensions. Several of the new limits, specifically for spin-1 dark matter mediators, pseudoscalar mediators, colored mediators, and leptoquarks, are the most restrictive to date.Peer reviewe