582 research outputs found
Extent and structure of intervening absorbers from absorption lines redshifted on quasar emission lines
We wish to study the extent and subparsec scale spatial structure of
intervening quasar absorbers, mainly those involving neutral and molecular gas.
We have selected quasar absorption systems with high spectral resolution and
good S/N data, with some of their lines falling on quasar emission features. By
investigating the consistency of absorption profiles seen for lines formed
either against the quasar continuum source or on the much more extended
emission line region (ELR), we can probe the extent and structure of the
foreground absorber over the extent of the ELR (0.3-1 pc). The spatial covering
analysis provides constraints on the transverse size of the absorber and thus
is complementary to variability or photoionisation modelling studies. The
methods we used to identify spatial covering or structure effects involve line
profile fitting and curve of growth analysis.We have detected three absorbers
with unambiguous non uniformity effects in neutral gas. For one extreme case,
the FeI absorber at z_abs=0.45206 towards HE 0001-2340, we derive a coverage
factor of the ELR of at most 0.10 and possibly very close to zero; this implies
an absorber overall size no larger than 0.06 pc. For the z_abs=2.41837 CI
absorber towards QSO J1439+1117, absorption is significantly stronger towards
the ELR than towards the continuum source in several CI and CI* velocity
components pointing to factors of about two spatial variations of their column
densities and the presence of structures at the 100 au - 0.1 pc scale. The
other systems with firm or possible effects can be described in terms of
partial covering of the ELR, with coverage factors in the range 0.7 - 1. The
overall results for cold, neutral absorbers imply a transverse extent of about
five times or less the ELR size, which is consistent with other known
constraints.Comment: Accepted in A&A, 17 pages, 14 figure
DostoĂŻevski, le prophĂšte. Remarques sur LâEurope russe annoncĂ©e par DostoĂŻevski (1948) de Paul Morand
FĂ©ru de littĂ©rature russe, Paul Morand a Ă©tĂ© tout spĂ©cialement marquĂ© par sa lecture de DostoĂŻevski. Si Gogol, Tourgueniev et TolstoĂŻ lâont ramenĂ© vers la tradition du rĂ©alisme balzacien, lâauteur du Journal dâun Ă©crivain lâa influencĂ© sur un plan qui dĂ©passe la littĂ©rature. Ă preuve, un essai qui occupe une place discrĂšte dans lâoeuvre de Morand, mais qui constitue un filon de premier ordre : LâEurope russe annoncĂ©e par DostoĂŻevski (1948). Cet article se propose dâexaminer lâimportance de DostoĂŻevski Ă travers le contexte moral dans lequel Morand a Ă©laborĂ© ses grands rĂ©cits dâaprĂšs-guerre, tels Le flagellant de SĂ©ville et « Le dernier jour de lâInquisition ».Keenly interested in Russian literature, Paul Morand was especially marked by his reading of Dostoevsky. If Gogol, Turgenev and Tolstoy steered him towards the tradition of Balzacian realism, the author of The Writerâs Diary influenced him in a way that went beyond literature. The proof lies in an essay that occupies a discrete place in Morandâs work but constitutes a mother lode: LâEurope russe annoncĂ©e par DostoĂŻevski (1948) (Russian Europe heralded by Dostoevsky). This article purports to examine Dostoevskyâs importance using the moral context in which Morand outlined his major post-War narratives such as Le flagellant de SĂ©ville (The Flogger of Seville) and Le dernier jour de lâInquisition (The Last Day of the Inquisition)
CĂ©leste Ugolin (1926) de Georges Ribemont-Dessaignes et lâinfluence dâAlfred Jarry dans le roman
Le passage Ă la postĂ©ritĂ© de lâĂ©crivain français Georges Ribemont-Dessaignes (1884-1974) est assurĂ© en ce qui concerne ses activitĂ©s de poĂšte, de polĂ©miste et de dramaturge au sein du groupe Dada ; il lâest moins, en revanche, en ce qui a trait Ă son oeuvre romanesque, pourtant abondante et diversifiĂ©e. Afin dâinviter Ă une (re)dĂ©couverte de lâoeuvre de ce romancier hors sĂ©rie, qui sut, sans sây cantonner, rester fidĂšle Ă lâesprit subversif et rageusement libĂ©rateur de Dada, cet article se propose dâexaminer comment CĂ©leste Ugolin (1926), rĂ©cit du dĂ©tachement et de lâagression continus, rĂ©emploie avec profit une conception ultramoderne de la littĂ©rature, auparavant illustrĂ©e dans lâoeuvre dramatique et romanesque dâAlfred Jarry (1874-1907), et centrĂ©e sur une logique en deux temps : dĂ©molir â reconstruire. Davantage quâune Ă©tude de filiation littĂ©raire, cet article a pour visĂ©e de replacer Ribemont-Dessaignes au rang des romanciers marquants du premier demi-siĂšcle, aux cĂŽtĂ©s dâAragon, de Cendrars et de Camus.Georges Ribemont-Dessaignesâs (1884-1974) literary legacy is well established with regard to his activities as poet, polemicist and playwright working within the Dada movement. His importance as a novelist, however, remains to be acknowledged. In order to contribute to the (re)discovery of this atypical French writer, who managed to remain faithful â but not enslaved â to Dadaâs subversive and liberating spirit, the present contribution offers a new reading of CĂ©leste Ugolin (1926), a novel which constantly alternates between indifference and aggressivity, and its affinities with the works by Alfred Jarry (1874-1907). Inspired by Jarryâs ultramodern ideas of literature, Ribemont-Dessaignes implements a binary logic of destruction and reconstruction. More than a study in literary influences, this paper seeks to establish Ribemont-Dessaignesâs place among important early twentieth-century novelists like Aragon, Cendrars and Camus
Continuity, capture, network: The professional logics of the organization of care
Cooperation in medicine, as in all group activity, is a key problem both for the actors involved and for sociologists. Classical studies in the sociology of health and medicine are moreover of little help in conceptualizing this problem. While arguing against the idea that affiliation with an institutional structure â such as a part of a professional segment or an area of expertise â determines relations between actors, our analysis seeks to move beyond the description of what is presented as being purely contingent. To understand phenomena related to cooperation and conflict, it is possible and worthwhile to distinguish between professionals according to their position in the therapeutic chain and their form of involvement in the strategy of care. Cooperation is based, in particular, on the match between âacquisitiveâ professionals who feel it is their duty to coordinate medical care and follow-up on a patient throughout the healing process, and other professionals who see their intervention as being limited to one phase in the therapeutic itinerary
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