Alien Registration- Mercier, Anne (Rumford, Oxford County)

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An econometric examination of the adoption and use of microcomputers by Iowa farmers

Given the increasing complexity of U.S. farming over the last several decades, farmers have become acutely aware of the need for information as an input in the farm decision-making process. The utilization of a microcomputer or outside paid computer services for managing the flow of data and the conversion of that data into useful information has the potential to enhance the profitability of any farming operation;The primary objectives of this study are to model both the separate and joint decisions of farmers on the adoption and utilization of personal computers and paid computer services. A profit-maximizing conceptual model is developed, assuming that these innovations fulfill the role of a managerial input. A system of normalized indirect profit functions is derived from this framework, under the presumption that if the farmer perceives that the innovation will increase his profit, he will decide to adopt it. These profit functions are believed to be functions of input and output prices and other fixed factors, such as education level and farm size;The qualitative response model is fitted to data from surveys of Iowa farmers over the period 1982-84, utilizing both probit and logit estimation techniques. The results are consistent with theoretical expectations across both methods, and support the major hypotheses that economies of scale and human capital contribute to increased probability of adoption. These innovations have not been available long enough or used by enough farmers (approximately 6% owned microcomputers in 1984) to pinpoint all potential benefits that such technology can yield. Sufficient information is known to be able to say that the proportion of adopters is increasing becasue those farmers perceive it will be a profitable acquisition

Comparative analysis of phycoerythrin production in cryptophytes

Phycobiliproteins are pigments with uses in pharmacology, cosmetics, foods, and as fluorescent probes in biochemistry. Cryptophyte microalgae are one possible source of phycobiliproteins as well as other molecules such as omega-3 fatty acids. The use of cryptophytes in biotechnology is currently very limited and especially the potential of freshwater species is poorly documented. For commercial microalgae production, it is important to find the best performing strains in terms of growth and yields of the products of interest. Phycoerythrin is a phycobiliprotein with red colour and strong yellow fluorescence. In this study, we evaluate the growth and phycoerythrin production of eight strains of freshwater cryptophytes belonging to the genus Cryptomonas, comparing them to two marine strains. The strains are grown in batch cultures under standardised conditions. Most of the studied freshwater strains have lower growth rates and all of them have lower biomass yields than the marine strains. However, most of them have much higher cellular phycoerythrin concentrations, which in the case of two strains leads them to a significantly higher overall phycoerythrin yield. There is large variation among cryptophytes in growth rates and phycoerythrin content. Our results suggest that freshwater cryptophytes of the genus Cryptomonas may be better sources of phycoerythrin than the more extensively studied marine strains.Peer reviewe

Nelly Chabrol Gagne, Filles d’album. Les représentations du féminin dans l’album

Les études féministes s’intéressent depuis les années 1970 à la culture de l’enfance et de la jeunesse, et particulièrement aux représentations du féminin dans les albums (voir notamment les textes pionniers d’Elena Gianini Belotti et les albums d’Adela Turin), mais c’est depuis les années 2000 que les études sur ce domaine se sont multipliées. Études de sociologues pour la plupart, elles reposaient sur des enquêtes systématiques chiffrées et faisaient le constat que, si l’on assistait à un r..

Christiane Connan-Pintado & Gilles Béhotéguy (dir.), Être une fille, un garçon dans la littérature de jeunesse. France 1945-2012

Ce livre s’inscrit dans l’un des axes du programme de recherches interdisciplinaires Generatio, porté par la Maison des Sciences de l’homme d’Aquitaine, qui a exploré « La construction des jeunes générations en Europe, xixe-xxie siècle ». Le titre de cet ouvrage est fidèle à son contenu : il fait le point sur les nombreuses recherches menées depuis les années 1980 dans le domaine de la place – quantitative et qualitative – accordée au masculin et au féminin dans les ouvrages de littérature de..