1,721,154 research outputs found
Ressources humaines et décisions à long et moyen terme
No full textLes méthodes de planification utilisées en gestion de la production et en gestion des ressources humaines se sont longtemps ignorées. Les premières, issues de la production manufacturière, sont principalement liées aux contraintes des équipements de production : capacité de production, disponibilité des machines, etc. Les secondes, issues du secteur des services, sont focalisées sur les contraintes du personnel : effectifs, horaires de travail, affectation, etc.
Dans le contexte actuel, il apparaît de plus en plus important de considérer ces deux aspects dans les décisions des systèmes productifs, qu'ils soient de biens ou de prestations de services. Cet ouvrage est divisé en trois parties complémentaires, soit les méthodes de planification et d'ordonnancement en production, les méthodes de résolution de
problèmes et les applications industrielles.
Ce livre s'adresse aussi bien aux ingénieurs qu'aux chercheurs intéressés par le domaine de la production de biens ou de services. Il présente de manière originale la gestion de production, dans l'optique du génie industriel, en s'intéressant autant aux moyens de production qu'aux acteurs, et à leurs relations dans le système productif.ou
Introduction
No full textCherche à comprendre, par une enquête réalisée sur deux ans, les raisons des différences de performances dans le management de projet.ou
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
Capacity determinants of an upstream supply chain
No full textCette thèse s’intéresse aux déterminants de la capacité d’une chaîne logistique-amont dont le dernier maillon est une ligne d’assemblage permettant une production de masse de produits fortement diversifiés. La définition de la capacité d’une unité de production élémentaire est relativement aisée dans le cas d’une production homogène. Notre recherche met progressivement en évidence les facteurs qui conditionnent la capacité d’une unité de production de plus en plus complexe, en supposant qu’il ne puisse y avoir de rupture de charge ni de rupture d’approvisionnement. La capacité d’un ensemble constitué de deux maillons successifs de la chaîne logistique correspond à la plus faible des capacités de chacun de ces maillons, à condition que le maillon amont ne travaille que pour le maillon aval et que les règles de pilotage des flux assurent l’indépendance de gestion de chaque maillon. Ces règles sont explorées, avec la mise en évidence de l’intérêt d’une utilisation judicieuse des informations certaines et irréversibles de l’aval, combinées avec les informations de structure au-delà. De plus, nos travaux analysent l’impact du lotissement des approvisionnements qui oblige à détenir un stock de sécurité, même en univers certain. Des études comparatives sont conduites pour montrer la supériorité des règles proposées par rapport à celles utilisées par le constructeur automobile commanditaire de cette recherche. Nous évoquons enfin des situations plus complexes caractérisées par le partage de l’approvisionnement de composants alternatifs entre plusieurs fournisseurs et le cas d’un fournisseur ayant plusieurs clients n’appartenant pas nécessairement à la même chaîne logistiqueThis thesis is interested in capacity determinants of an upstream supply chain, in which the last entity is an assembly line allowing a mass production of customized products. Capacity definition of an elementary production unit is almost easy in the case of an homogeneous production. Our research work progressively highlights the factors that determine the capacity of a more and more complex production unit, assuming that there are no work shortage and no stock-out. The capacity of a group formed by two successive entities of a supply chain is the lowest capacity of these units, under the condition that the supplier works for the industrial customer and the control rules guarantee the management independence for each entity. These rules are explored, to put in evidence good utilization interest of sure and unmoved information from the industrial customer, in addition to structural information for following periods. In addition, our works analyze supplying lot-sizing impact, which leads to have a safety stock even in deterministic universe. Different comparative studies were done to show superiority of the proposed rules, in comparison to those used by the automotive constructor, who is at the origin of this research. We finally handle more complex situations, characterized by alternate components supplying sharing between several suppliers and the case of one supplier providing several industrial customers who don’t necessarily belong to the same supply chai
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