The bricolage of a myth: re-reading Derrida reading Lévi-Strauss fifty years after

Of all the presentations at the 1966 symposium ‘The Languages of Criticism and the Sciences of Man’, none have been so thoroughly mythologized as Jacques Derrida’s reading of Claude Lévi-Strauss in ‘Structure, Sign, and Play in the Discourses of the Human Sciences’. With this paper, Derrida was said to have unseated Lévi-Strauss from his privileged position in ethnology, prefiguring a more thorough critique that would appear later in Of Grammatology. However, looking past the now-hegemonic memory of these critiques reveals more nuanced and problematic operations in both writers’ work than the popular histories allow for. By reconsidering Derrida’s readings with a closer attention to Lévi-Strauss’s writing, augmented by an alternate perspective offered by Audre Lorde, one can begin to unravel the texts in question from the myths that have grown around them in order to better understand the role of ethnocentrism and self-criticism in the work of both thinkers

Alveolar Bone Remodeling In Response to Orthodontic Tooth Movement

Objective: Dental protrusion and retrusion are common malocclusions in clinical orthodontics. When teeth are moved orthodontically, the alveolar bone surrounding the teeth remodels. In the past, incisor retraction-associated alveolar bone remodeling has been studied. However, less is known about the alveolar bone remodeling after incisors are proclined. This study aimed to assess the changes in alveolar bone thickness after proclination of maxillary incisors. The null hypothesis was that there is no difference in the surrounding alveolar bone thickness after orthodontic tooth movement. Materials and Methods: Patients were selected under the inclusion criteria of moderate-to-severe bimaxillary dental retrusion (U1-SN \u3c 97°, L1-MP \u3c 88.0°), absence of craniofacial anomalies, non-extraction, absence of missing teeth, with quality pre-and post-treatment lateral cephalometric images. Nineteen patients (10 males, 9 females; mean age 14.7 years) were selected, and their pre-treatment and post-treatment lateral cephalograms were digitally traced using a customized cephalometric analysis to compare changes in labial and lingual alveolar bone thickness (ABT) after orthodontic treatment. A two-sample t-test with R statistical software version 4.1.2 was used to measure the differences between the pre- and post-treatment cephalometric measurements. A p value less than 0.05 was considered statistically significant. Results: According to the SN-7° measurement method, ABT increased at the labial(b) SN-7 (0.27mm ± 0.70; p\u3c0.05) and U1 labial(c) SN-7 (0.79mm ± 1.56; p\u3c0.05) levels; however, ABT decreased at the U1 lingual (c) SN-7 (1.13mm ± 1.35; p\u3c0.05) level. According to the perpendicular of the long axis of U1 root measurement method, ABT increased at the U1 labial(c) ⊥U1 (0.55mm ± 1.35; p\u3c0.05) level while ABT decreased at the U1 lingual (b) ⊥U1 (0.79mm ± 1.03; p\u3c0.05) and U1 lingual (c) ⊥U1 (1.61mm ±1.39; p\u3c0.05) levels. Statistically significant changes were also found in post-treatment incisor angulation U1-SN° (8.05° ± 8.25; p\u3c0.05), U1 – NA° (7.44° ± 8.08; p \u3c 0.05) and post-treatment incisor position U1 – NA (mm) (1.64mm ± 2.63; p\u3c0.05). Conclusion:The null hypothesis was rejected based on our results. There are statistically significant changes to the labial and lingual alveolar bone (ABT) after proclination of the maxillary incisors. Our data support previous findings in orthodontics literature. Further studies should be conducted that can employ larger sample sizes with imaging methods that overcome the limitations of conventional two-dimensional imaging

The weird history of USAmerican Fascism: A guide (1979-2019)

The future, as ever, can be read in comic books. Foretold by the Dark Age of Comics, the doom that now comes to Earth arrives in the form of self-realizing eschatologies, horrors born out of the rutting between unfettered capitalism and its favorite child, technological hubris. When the Big Two comic book publishers began hiring British and Irish authors en masse over the course of the 1980s, these writers brought with them a critical eye sharpened by the political and economic cruelty of the decade. The victims of the Iron Lady came to the New World and set their sights on the empire of the Teflon President, using superhero stories to explore the ideological weapons deployed in the service of global capitalism. The Weird History of USAmerican Fascism tracks the interrelated networks of popular culture and fascism in the United States to demonstrate the degree to which contemporary USAmerican politics embodies the future that the fictional dystopias of the past warned us about. Although the trans-Atlantic political developments of 2016 and their aftermath have sparked a widespread interest in a resurgent Anglophone fascism and its street-level movements – seen most obviously in the loose collection of white supremacists known as the ‘alt-right’ – this interest has been hamstrung by the historical aversion to a serious study of popular and ‘nerd’ culture during the twentieth century. By paying attention to the conceptual and interpersonal networks that emerged from the comic books and videogames of the 1980s, The Weird History of USAmerican Fascism fills a critical lacuna in cultural theory while correcting recent oversights in the academic analysis of contemporary fascism, providing an essential guide to the past, present, and future of the bizarre world of USAmerican politics

Who Believes in Me? The Effect of Student-Teacher Demographic Match on Teacher Expectations

Teachers are an important source of information for traditionally disadvantaged students. However, little is known about how teachers form expectations and whether they are systematically biased. We investigate whether student-teacher demographic mismatch affects high school teachers’ expectations for students’ educational attainment. Using a student fixed effects strategy that exploits expectations data from two teachers per student, we find that non-black teachers of black students have significantly lower expectations than do black teachers. These effects are larger for black male students and math teachers. Our findings add to a growing literature on the role of limited information in perpetuating educational attainment gaps

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

Observation of tW production in the single-lepton channel in pp collisions at root s=13 TeV

A measurement of the cross section of the associated production of a single top quark and a W boson in final states with a muon or electron and jets in proton-proton collisions at root s = 13 TeV is presented. The data correspond to an integrated luminosity of 36 fb(-1) collected with the CMS detector at the CERN LHC in 2016. A boosted decision tree is used to separate the tW signal from the dominant t (t) over bar background, whilst the subleading W+jets and multijet backgrounds are constrained using data-based estimates. This result is the first observation of the tW process in final states containing a muon or electron and jets, with a significance exceeding 5 standard deviations. The cross section is determined to be 89 +/- 4 (stat) +/- 12 (syst) pb, consistent with the standard model.Peer reviewe

Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at root s=13 TeV

Peer reviewe

Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at root s=13 TeV

Abstract:A measurement of the top quark mass is performed using a data sample en-riched with single top quark events produced in thetchannel. The study is based on proton-proton collision data, corresponding to an integrated luminosity of 35.9 fb−1, recorded at√s= 13TeV by the CMS experiment at the LHC in 2016. Candidate events are selectedby requiring an isolated high-momentum lepton (muon or electron) and exactly two jets,of which one is identified as originating from a bottom quark. Multivariate discriminantsare designed to separate the signal from the background. Optimized thresholds are placedon the discriminant outputs to obtain an event sample with high signal purity. The topquark mass is found to be172.13+0.76−0.77GeV, where the uncertainty includes both the sta-tistical and systematic components, reaching sub-GeV precision for the first time in thisevent topology. The masses of the top quark and antiquark are also determined separatelyusing the lepton charge in the final state, from which the mass ratio and difference aredetermined to be0.9952+0.0079−0.0104and0.83+1.79−1.35GeV, respectively. The results are consistentwithCPTinvariance