Professionnalisation ou professionnalisme ? Discussion de l'ouvrage de N. Vézinat "Les métamorphoses de la poste" (PUF)

Scientific conference (2012, November 30)

Localized electron dynamics in attosecond-pulse-excited molecular systems: Probing the time-dependent electron density by sudden photoionization

in Physical Review. A (2012)

Ultrafast UV excitation can prepare a nonstationary coherent superposition of molecular electronic states. The purely electronic dynamics before the onset of nuclear motion can be probed by a sudden XUV ... [more ▼]

Ultrafast UV excitation can prepare a nonstationary coherent superposition of molecular electronic states. The purely electronic dynamics before the onset of nuclear motion can be probed by a sudden XUV ionization of the electronic wave packet. Dynamical computations at the many-electron level on the LiH and 1-azabicyclo[3.3.3]undecane (C10H19N) molecules showthat molecular frame photoelectron angular distributions reflect the spatial localization and undulations of the electronic coherent superposition accessed by the initial ultrafast UV excitation. The sudden ionization is sensitive to interference effects. [less ▲]

Stéréotypes et âgisme: est-il possible de bien vieillir ?

Scientific conference (2012, November 29)

Le double défi de la nanomédecine

Scientific conference (2012, November 29)

New developments in SAFIR 2013 - New concrete models

Scientific conference (2012, November 29)

Dynamique et perspectives de la filière cotonnière du Burundi

Doctoral thesis (2012)

Cotton cultivation was introduced in Burundi in 1919 under the Belgian mandate with the objective to monetize the rural economy and open the country to international trade. After independence (1962), the ... [more ▼]

Cotton cultivation was introduced in Burundi in 1919 under the Belgian mandate with the objective to monetize the rural economy and open the country to international trade. After independence (1962), the cotton crop continued to flourish as a vertically integrated chain from upstream to downstream in pursuing the objectives of job creation, import substitution and maximizing the added value generated by various cotton products. Since 1993, the cotton is in perpetual decline due to various factors both endogenous and exogenous to reach in 2009 the lowest level in its history. Its competitiveness is challenged by instability of the global market of cotton fiber, policies (subsidies) of large producers (China, India, USA, Pakistan, ...), competition from synthetic textile industry, the prices of agricultural inputs (fertilizers and phytosanitary products) and raw materials for industries, competition for food crops production factors which are already scarce and especially less remunerative producer prices. Survey work on a sample of 120 farms during three seasons (2007/2008, 2008/2009, 2009/2010) as well as interviews with various agents involved in the cotton sector have been conducted to understand the reasons of the decline of the cotton sector and see the adaptation mechanisms implemented in the segment "producers - COGERCO." It appears from these investigations that the cotton is not competitive with food crops. The price paid to growers is not motivating, production costs are expensive and factors of production become increasingly restrictive. COGERCO however, continues to subsidize cotton without benefit. In this context the majority of cotton producers combine beans or cowpeas with cotton to take advantage of subsidies (inputs, management, ...) and other benefits (loans, fields ...) that the company offers to producers without benefit to the company. The latter is in chronic deficit due to poor sector governance which is under pressure of privatization already imposed on other agro-industrial crops of the country (coffee, tea). [less ▲]

Latin Literary Papyri

Scientific conference (2012, November 29)

Microsoft Corp. contre Commission T-167/08, 27 juin 2012

Scientific conference (2012, November 29)

Genetic parameters for individual weights at birth, weaning and 60 days of stress negative Piétrain pigs in the tropics: the case of Vietnam

Poster (2012, November 28)

Data recorded between 2008 and 2012 from Dong Hiep pig farm, Vietnam, was used to stimate genetic parameters for weights at birth (WB), weaning (WW) and 60 days (W60) of stress negative Piétrain pigs ... [more ▼]

Data recorded between 2008 and 2012 from Dong Hiep pig farm, Vietnam, was used to stimate genetic parameters for weights at birth (WB), weaning (WW) and 60 days (W60) of stress negative Piétrain pigs using restricted maximum likelihood methodology. WB, WW and W60 were recorded from 1146, 839 and 610 animals respectively. The data were analyzed according to a mixed model including 4 fixed effects, parity, season, sex, and interaction between halothane genotype and country of origin (Belgium and Vietnam) of sows. Additionally, 3 random effects (maternal common environment for litter, direct and maternal additive genetic) for WB and 2 random effects (maternal common environment for litter and direct additive genetic) for WW and W60 were included in the model. Estimates of direct heritability and proportion of the maternal common environmental variance for WB, WW and W60 were 0.20, 0.13; 0.22, 0.21 and 0.19, 0.30 respectively. In addition, the estimate of maternal heritability for WB was 0.14. These genetic parameters suggest that WB, WW and W60 could be improved by selection using both direct and maternal effects. [less ▲]

Création d'un outil d'évaluation de la durabilité des productions de qualité différenciée en Wallonie

in 12ème Journée d'étude des productions porcines et avicoles (2012, November 28)

L’objectif de cette étude est de comparer simultanément l’impact environnemental, social et économique liés à l’application de différents critères de qualités différenciées. L’outil développé s’articule ... [more ▼]

L’objectif de cette étude est de comparer simultanément l’impact environnemental, social et économique liés à l’application de différents critères de qualités différenciées. L’outil développé s’articule autour de la modélisation des impacts environnementaux d’après la méthodologie ACV et s’appuie sur des matrices techniques (MT) pour l’évaluation sociale et économique. D’un point de vue opérationnel, il s’agit de développer un outil de simulation qui répond aux cahiers des charges minimaux de la qualité différenciée à travers le paramétrage réalisé par l’utilisateur final de l'application. Le modèle est implémenté dans l’environnement de programmation MATLAB R2011a (MathWorks, Natick, MA, USA). [less ▲]