170,383 research outputs found
En guise de conclusion
No full textSébillotte Jean, Cochet J.-C. En guise de conclusion. In: Économie rurale. N°93, 1972. Les concepts et les méthodes d'établissement du revenu agricole et des revenus des agriculteurs. pp. 111-113
Evolutionary origins of human handedness : evaluating contrasting hypotheses
No full textVariation in methods and measures, resulting in past dispute over the existence of population handedness in nonhuman great apes, has impeded progress into the origins of human right-handedness and how it relates to the human hallmark of language. Pooling evidence from behavioral studies, neuroimaging and neuroanatomy, we evaluate data on manual and cerebral laterality in humans and other apes engaged in a range of manipulative tasks and in gestural communication. A simplistic human/animal partition is no longer tenable, and we review four (nonexclusive) possible drivers for the origin of population-level right-handedness: skilled manipulative activity, as in tool use; communicative gestures; organizational complexity of action, in particular hierarchical structure; and the role of intentionality in goal-directed action. Fully testing these hypotheses will require developmental and evolutionary evidence as well as modern neuroimaging data.Peer reviewe
Volume computation for polytopes and partition functions for classical root systems
No full textThe paper describe an algorithm to compute the value of
the inverse Laplace transforms of rational functions with poles on arrangements
of hyperplanes with applications to partition function for classical root system
Une date consulaire (213 après J.-C.) sur un tuyau de plomb viennois
No full textA piece of a Roman lead pipe of a large bore, coming nearly certainly from the river Rhône right bank, opposite Vienne (Isère), bears, besides a Vienne plumber's new stamp, a consular date. It bears evidence of great hydraulic works for public purposes under Caracalla in A.D. 213. That brings in question the idea too long granted that the early third century was a period of decline for Vienne and saw the beginning of the desertion of the right bank district.Un fragment de tuyau de plomb romain de grand calibre, provenant à peu près certainement de la rive droite du Rhône en face de Vienne (Isère), porte, outre une marque nouvelle d'un plombier viennois, une date consulaire. Il témoigne de grands travaux hydrauliques à des fins publiques sous Caracalla, en 213 après J.-C. Ce qui remet en question l'idée trop longtemps admise que le début du IIIe s. fut une période de déclin pour Vienne et vit le commencement de l'abandon du quartier de la rive droite.Burdy Jean, Cochet André. Une date consulaire (213 après J.-C.) sur un tuyau de plomb viennois. In: Gallia, tome 49, 1992. pp. 89-97
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
The influence of auranofin, a clinically established antiarthritic gold drug, on bone metabolism: analysis of its effects on human multipotent adipose-derived stem cells, taken as a model
No full textDispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Influence du gel sur les propriétés des polychloroprènes/Effect of the gel contents on the properties of Polychloroprene
No full textInternational audienceThe effects of the gel content of polychloroprene films from latex coalescence on the development of crystallinity and on the dynamic mechanical properties has been studied. The experimental techniques were differential scanning calorimetry (DSC), X Rays diffraction and small angle diffusion, and finally Dynamic Mechanical analysis (DMA). The results show that the gel causes a retardation of the crystallinity development and a strong decrease of the mechanical modulus. To cite this article: F. Cochet et al., C. R. Physique 6 (2005)
Influence du gel sur les propriétés des polychloroprènes/Effect of the gel contents on the properties of Polychloroprene
No full textInternational audienceThe effects of the gel content of polychloroprene films from latex coalescence on the development of crystallinity and on the dynamic mechanical properties has been studied. The experimental techniques were differential scanning calorimetry (DSC), X Rays diffraction and small angle diffusion, and finally Dynamic Mechanical analysis (DMA). The results show that the gel causes a retardation of the crystallinity development and a strong decrease of the mechanical modulus. To cite this article: F. Cochet et al., C. R. Physique 6 (2005)
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