Un peu moins de vingt mille incipit inédits de Georges Perec

Un peu moins de vingt mille incipit inédits de Georges Pere

Quantum correlations of twophoton polarization states in the parametric down-conversion process

We consider correlation properties of twophoton polarization states in the parametric down-conversion process. In our description of polarization states we take into account the simultaneous presence of colored and white noise in the density matrix. Within the considered model we study the dependence of the von Neumann entropy on the noise amount in the system and derive the separability condition for the density matrix of twophoton polarization state, using Perec-Horodecki criterion and majorization criterion. Then the dependence of the Bell operator (in CHSH form) on noise is studied. As a result, we give a condition for determining the presence of quantum correlation states in experimental measurements of the Bell operator. Finally, we compare our calculations with experimental data [doi:10.1103/PhysRevA.73.062110] and give a noise amount estimation in the photon polarization state considered there.Comment: 10 pages, 7 figures; corrected typo

Georges Perec’s experimental fieldwork; Perecquian fieldwork

© 2016 Informa UK Limited, trading as Taylor & Francis GroupThis paper traces key themes in contemporary experimental fieldwork – explorations of ordinary places by artists, writers, activists, enthusiasts, students and researchers – to the works of Georges Perec. Preoccupations of this work – including playfulness, attention to the ordinary, and writing as a fieldwork practice – are all anticipated and elaborated in Perec’s oeuvre, where they converge around an ‘essayistic’ approach. Exhibiting these traits, some contemporary fieldwork is more convincingly Perecquian than psychogeographical or Situationist, despite the tendency to identify it with the latter. Through Perec, it is therefore possible to bring contemporary experimental fieldwork into focus, identifying a coherence and sense of project within it, while speaking to the question of what it means and could mean to conduct fieldwork experimentally. Particular attention is paid in this paper to Perec’s most accomplished and sustained field texts, both of which have been translated into English: An Attempt at Exhausting a Place in Paris (2010, from 1975 original in French) and Species of Spaces (1999/1974)

Improving Care of Behavioral Health Patients in a Rural Emergency Department: A Needs Assessment

Leadership and staff at a rural Critical Access Hospital (CAH)have identified the need for interventions to address the specific care issue of behavioral health patients presenting to the emergency department (ED). The ED has experienced a higher than expected number of visits, which has presented the department with challenges, especially in finding placements for patients who need inpatient treatment. ED management and staff have reported many patients have experienced long lengths of stay in the ED while waiting for beds. A needs assessment attempts to identify characteristics of patients who remain in the ED for extended lengths of time, and the hospital and systems factors associated with these incidences. A key part of this needs assessment was identifying delays in throughput experienced by behavioral health patients. ED records for visits that took place within a13 month period were reviewed, including a total of 519 records. Three variables were identified as being associated with increased length of stay.These were whether or not patients were screened by a Community Mental Health (CMH) social worker; whether or not law enforcement was involved with the patient encounter; and whether or not the patient was dispositioned to inpatient behavioral health treatment. Information obtained during the needs assessment was used to inform the creation of a quality improvement tool for the purpose of continued data collection

Aqua(2,2′-bipyridyl-N,N′)(thiodiacetato-0,0′,S)zinc(II) tetrahydrate

The title complex, aqua(2,2′-bipyridy-N,N′(3-thiapentanedioate-O,S,O′)zinc(II) tetrahydrate, [Zn(C4H4-O4S)(C10H8N 2)(H2O)].4H2O, is mononuclear with a coordination sphere consisting of one S, two N and three O atoms. The Zn atom is linked to a tridentate thiodiacetate ligand, a bidentate 2,2′-bipyridine ligand and an aqua ligand resulting in a slightly distorted octahedral coordination geometry. The molecular units are linked together in the crystal by an extensive hydrogen-bonding network and by intermolecular S⋯S interactions.Fil:Baggio, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Perec, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina

Soundwalking: deep listening and spatio-temporal montage

The bicentenary of the 1817 Pentrich Revolution provided an opportunity for the composition of a series of soundwalks that, in turn, offer themselves up as a case study in an exposition of spatial bricolage, from the perspective of an interdisciplinary artist working with the medium of locative sound. Informed by Doreen Massey's definition of space as 'a simultaneity of stories so far', the author’s approach involves extracting sounds from the contemporary soundscape and re-introducing them in the form of multi-layered compositions. This article conducts an analysis of the author's soundwalking practice according to Max van Manen's formulation of four essential categories of experience through which to consider our 'lived world': spatiality, temporality, corporeality, and relationality. Drawing upon theorists whose concerns include cinematic, mobile and environmental sound, such as Chion, Chambers and Schafer, the author proposes the soundwalk as as an expanded form of cinema, with the flexibility to provoke states of immersion was well as critical detachment. A case is made for the application of the medium within the artistic investigation into ecological and socio-political issues alongside aesthetic concerns

The five-coordinate cadmium halide bis(diethyldithiocarbamate) complexes [PPh4][Cd(S2CNEt2)2Cl] and [PPh4][Cd(S2CNEt2)2Br]

The title compounds, tetraphenylphosphonium chlorobis(diethyldithiocarbamato-S,S)cadmium(II), (C24H20P)-[CdCl(C5H10NS 2)2], (1), and tetraphenylphosphonium bromobis(diethyldithiocarbamato-S,S)cadmium(II), (C24-H20P)[CdBr(C5H10NS 2)2], (2), are isomorphous. The compexes are mononuclear with coordination spheres of the types S4Cl and S4Br, respectively. The central Cd atom is linked to four S atoms and two bidentate dithiocarbamate ligands and to the halide atom. The resulting Cd-atom coordination geometry is halfway between trigonal bipyrimidal and square pyramidal. Principal dimensions include: Cd-S 2.573 (1)-2.682 (1) in (1) and 2.571 (3)-2.736 (2) Å in (2); Cd-Cl and Cd-Br 2.462 (1) and 2.626 (1) Å, respectively.Fil:Baggio, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Perec, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina

Professionalism in sport; advantages and disadvantages

Ovim radom nastoji se ukazati na ubrzani razvoj profesionalnog sporta u Hrvatskoj, okarakterizirati ga navodeći njegove prednosti i nedostatke te istaknuti njegovu važnost u stvaranju uspješne sportske karijere svakog sportaša. Sport u tom kontekstu čine aktivnosti čija je dominanta jačanje igrom i radom istovremeno, korištenjem vlastitog slobodnog vremena za treninge i natjecanja s mogućnošću preobrazbe navedenih rekreativnih u profesionalni oblik sportskih aktivnosti. Proces profesionalizacije sporta odnosi se na razvoj sporta kao profitabilne profesije kojom sportaši i ostali akteri sporta zarađuju za život, a najzastupljeniji je u ekipnim sportovima. Promjene u njegovoj strukturi rada i rast popularnosti doveli su do veće međusobne ovisnosti sporta i medija, ponekad za sportaša pozitivne, ponekad negativne. Veličanje sportskih uspjeha pojedinaca, nije jedino što ispunjava stranice poznatih tabloida. Često se neuspjeh i privatan život sportaša kritizira više nego što se njihov uspjeh hvali. Stoga se sa sigurnošću može reći da profesionalno bavljenje sportom sa sobom, osim brojne prednosti potrebnih za razvoj sportske karijere, donosi i nedostatke s kojima se često puno teže nositi. Prednosti su profesionalnog sporta financijska sigurnost koja osigurava lakše pokrivanje životnih troškova, ozbiljnost, disciplina i odgovornost sportaša koja se razvija prilikom profesionalnog bavljenja sportom, zdrave navike kretanja, raznovrsnost prehrane koja je neophodna u sportskom svijetu za postizanje uspjeha, ali i izuzetna dinamičnost života ispunjena putovanjima, iskustvima te uspomenama koje ostaju za čitav život. Nedostaci su velika medijska popularnost i zadiranje u privatan život sportaša koji stvaraju stres, visok pritisak i osjećaj podcijenjenosti, veća mogućnost ozljeđivanja koja narušava opće fizičko stanje pojedinca, veća odgovornost koja prouzrokuje strah od neuspjeha, ali i ograničava mogućnost doškolovanja sportaša zbog velikog broja sportskih obaveza. Međutim, najveći nedostatak profesionalnog sporta je asocijalnost uzrokovana nedostatkom vremena koja stvara osjećaj gubitka dodira s društvom, obitelji i prijateljima. Stoga je potrebno prihvatiti njegove obje strane te pokušati izvući maksimum iz svake situacije kako bi se postigla željena slava

Síntesis, estructura y propiedades del difluoroborano

Fil: Perec, Mireille. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina