Cette thèse contribue à l'amélioration de la fiabilité des réponses fournies par les systèmes pair-à-pair sémantiques de plusieurs façons. La première partie de la thèse a pour but de garantir de ne produire que des réponses bien-fondées quand le réseau global d'un tel système est inconsistant. Deux algorithmes ont été proposés. Le premier détecte des causes d'inconsistances. Il termine, est décentralisé, complet, correct. Le deuxième profite des résultats du premier pour garantir de ne raisonner que de manière bien-fondée. Il termine, est décentralisé, correct. Des résultats prometteurs ont été obtenus à partir des expérimentations. La seconde partie de la thèse considère le problème de modéliser la confiance des pairs en des réponses obtenues. Basé sur un modèle probabiliste, le modèle de confiance proposé a une sémantique claire et permet aux pairs d'estimer la confiance en des réponses obtenues avec une bonne précision même avec peu observations.

Even if a handover process is a critical stage in the software lifecycle, little is known about the problems encountered when transferring a software system from development to maintenance. In this paper, we have elicited five core handover problems as faced by five IT organizations today. These are (1) insufficient system knowledge, (2) lack of domain knowledge, (3) insufficient communication, (4) inadequate documentation, and (5) difficulties in tracking changes. / QC 20120223

No description available.

Zugl.: Wien, Univ., Diss., 2007

Research on consumer perceptions towards dairy animal welfare is lacking in Canada. Though consumers are aware of animal welfare issues in other animal industries, the dairy industry remains largely ignored. This thesis employed a mail survey in order to discover the opinions of Canadians towards dairy animal welfare. Respondents answered questions about the importance of animal welfare and its relative importance in comparison to low milk prices, the current state of dairy animal welfare in Canada and how it compared to the United States and other livestock sectors, practices consumers believed to be important for proper dairy animal welfare, as well as what they would pay for animal welfare friendly milk. The results suggested Canadians believed animal welfare was important and that the Canadian dairy animal was currently acceptable. Consumers believed outdoor access and banning growth hormones were important. Finally, a majority indicated they would purchase animal welfare friendly milk.

This paper proposes a diachronic and synchronic analysis of the extensive use of se in Spanish reflexive and passive constructions with se being discussed in relation to the Unaccusative Hypothesis in Arc Pair Grammar.Universals in Arc Pair Grammar, namely the Unaccusative Law, the 1-Advancement Exclusiveness Law and the Final 1-Arc Law will account for the similarities and differences, first between English and Spanish predicates; and second, between ordinary reflexive constructions and reflexive passive constructions.Evidence from Spanish, primarily synchronic, is presented to analyze reflexive constructions that come from an initial unaccusative stratum. A parallel between these constructions and reflexive passives is established to demonstrate that unaccusative predicates and reflexive passive constructions are very closely related.Diachronically the paper claims that there is a logical and clear evolution of se based on corefentiality, anaphoric chains, unspecified arguments, and self-erasing ghost arcs.Finally this paper attempts to explain why in some instances the predicate will not exhibit agreement with the corresponding nominal. The Chomeur relation and the introduction of ghost arcs according to Arc Pair Grammar Laws and Theorems will provide the basis for this explanation.

国立情報学研究所で電子化したコンテンツを使用している。

Diss. (sammanfattning) Stockholm : Karol. inst., 2001. / Härtill 5 uppsatser.

Diss. (sammanfattning) Uppsala : Uppsala universitet, 2006. / Härtill 4 uppsatser.

Chemnitz, Techn. Univ., Magisterarb., [2006].