Analyses synchroniques et diachroniques des thématiques EGC

International audienceScientific papers published in the proceedings of EGC, conference that is held annually since 2001, constitute the richness of these events that put in scene the best of the French research focusing on knowledge extraction and management. In this paper we analyzed the scientific papers of the last 12 editions of EGC in order to highlight the main research subjects that were addresses. First, we detected common terms and specificities between the articles of different editions of the conference and also differences that could appear between consecutive editions. Then we studied how articles can be grouped into separate topics, that we automatically detected, and how these topics evolved since the conference beginnings until 2015.Les articles scientifiques publiés dans les actes des conférences EGC, qui se déroulent chaque année depuis 2001, constituent la richesse de ces évè-nements mettant en avant le fer de lance de la recherche francophone portant sur la gestion et l'extraction de connaissances. Nous nous sommes penchés sur l'analyse de ces publications scientifiques afin d'en extraire l'essence en termes de thématiques de recherches abordées. Premièrement, nous avons analysé les points communs et les spécificités des publications dans les différentes éditions de la conférence ainsi que les principales différences entre les éditions consécu-tives. Puis nous nous sommes intéressés à la façon dont les publications s'arti-culent autour des thématiques extraites et sur lesquelles nous avons essayé de visualiser une approximation sémantique. Enfin nous nous sommes intéressé à l'évolution des thématiques depuis les débuts de cette conférence et jusqu'à l'édition 2015

Les Sciences Humaines et Sociales dans le PRES LSE

Ce rapport donne un aperçu général sur l'activité de recherche en sciences humaines et sociales dans le Pôle de Recherche et d'Enseignement Supérieur de Lyon - Saint-Etienne. Cette description porte à la fois sur les ressources humaines engagées, sur la production scientifique qui en résulte et sur les intéractions entre les acteurs de la recherches eux-mêmes

Towards a typology of desert kites combining quantitative and spatial approaches

International audienc

Location of Franchise Networks in the United States. What Lessons for Networks Strategies?

We present in this paper, an exploratory approach to analyzing the network’s location choices. First, adopting a multivariate statistical approach, we built a typology of franchise networks allowing to define latent strategies. . Then, we present a new indicator, Network Linear Density (NLD) to estimate the distribution of network density from the number of outlets and the spatial distance between the franchisors and the largest state. . We conduct this exploratory analysis on a sample of American franchise networks. Our results support the hypothesis that there is a link between overall franchise network strategy and location strategy

Network strategies in the French franchise systems : A Predictive Model of Stratification

International audienc

Strategic Groups in the French Franchising Sector

International audienc

Mapping herd mobilities and evaluating their role in exchange networks, a preliminary view from Ovçular Tepesi (Nakhchivan, Azerbaijan)

International audienc

Estimation and optimization of flank wear and tool lifespan in finish turning of AISI 304 stainless steel using desirability function approach

The wear of cutting tools remains a major obstacle. The effects of wear are not only antagonistic at the lifespan and productivity, but also harmful with the surface quality. The present work deals with some machinability studies on flank wear, surface roughness, and lifespan in finish turning of AISI 304 stainless steel using multilayer Ti(C,N)/Al2O3/TiN coated carbide inserts. The machining experiments are conducted based on the response surface methodology (RSM). Combined effects of three cutting parameters, namely cutting speed, feed rate and cutting time on the two performance outputs (i.e. VB and Ra), and combined effects of two cutting parameters, namely cutting speed and feed rate on lifespan (T), are explored employing the analysis of variance (ANOVA). The relationship between the variables and the technological parameters is determined using a quadratic regression model and optimal cutting conditions for each performance level are established through desirability function approach (DFA) optimization. The results show that the flank wear is influenced principally by the cutting time and in the second level by the cutting speed. In addition, it is indicated that the cutting time is the dominant factor affecting workpiece surface roughness followed by feed rate, while lifespan is influenced by cutting speed. The optimum level of input parameters for composite desirability was found Vc1-f1-t1 for VB, Ra and Vc1-f1 for T, with a maximum percentage of error 6.38%

Morphological and geographical variability of desert kites

International audienceDesert kites are hunting mega-traps found from the Aralo-Caspian zone to Western Arabia. These structures present a singular and systematic layout suggesting that they were associated with an elaborate and standardized hunting technique. However, the morphology of these structures is very diversified (size, shape, and number of constituent elements) and here we seek to characterize this diversity. We propose a typology based on a previous clustering approach using morphological variables recorded for a representative sample, to which we add a qualitative input, the shape of the enclosures. The different identified types are regionalized and it is possible to propose a map at the scale of the entire distribution area