Une Bibliothèque de Fragments de Méthodes pour la Construction de Méthodes Situationnelles

National audienceLa pratique de l'utilisation des méthodes montre que ces dernières ne sont presque jamais suivies convenablement du fait qu'il n'existe aucune méthode qui satisfasse toutes les situations. Développer une nouvelle méthode pour toute nouvelle situation n'est pas judicieux puisque le coût, en terme de temps, sera très cher. L'approche situationnelle vise à définir des méthodes qui sont construites par assemblage de fragments de méthodes déjà existantes de façon à bien s'adapter à la situation du projet et à gagner en temps de développement. Parmi les approches proposées pour supporter la construction des méthodes situationnelles celle de Colette Rolland [6], qui permet de construire et d'exécuter dynamiquement et d'une manière flexible les modèles de processus. Cette approche est basée sur le concept de carte et sur les aides méthodologiques qui lui sont associées. Notre travail consiste en le développement d'une bibliothèque de fragments de méthodes aidant dans la construction de méthodes situationnelles et mettant en oeuvre l'approche en question. Cette bibliothèque fournit une base où sont décrites les deux facettes des fragments : produits et processus, ainsi que trois modules permettant de gérer la base, de consulter son contenu et de rechercher des fragments selon des critères bien déterminés

Colla-Config: A stakeholders preferences-based approach for product lines collaborative configuration

International audienceDuring collaborative configuration of software product lines (SPL), multiple stakeholders contribute together in building a single product specification. Conflicting situations can arise during the configuration process due to contradictions between some/all stakeholders’ configuration choices. Detecting and resolving such situation rise two major challenges: choosing which choices to omit, and taking stakeholders’ preferences into account. Several SPL collaborative configuration approaches are available. However, they either do not present detailed information on the strategies for conflict resolution, or they rely on a systematic process that resolves conflicts by prioritizing configuration decisions made at earlier stage, constraining therefore some of stakeholders’ choices. The lack of flexibility may hinder conflict resolution as choices taken at earlier stages overlay those at later phases. To mitigate these limitations, we propose a new collaborative configuration approach (Colla-Config) that provides a preference-based conflict resolution method within a free-order configuration process; each stakeholder expresses his/her preferences through a set of substitution rules, and freely makes his/her configuration decisions towards the desired product, without being constrained by the configuration decisions made by the other ones. To assess the feasibility and the usability of the proposed approach, we conducted a usability test designed following the ISO/IEC 25062:2006 Common Industry Format for usability tests. Results of the experiments provide preliminary evidence of the approach feasibility and the tool ability to properly support the SPL collaborative configuration

Colla-Config: A stakeholders preferences-based approach for product lines collaborative configuration

International audienceDuring collaborative configuration of software product lines (SPL), multiple stakeholders contribute together in building a single product specification. Conflicting situations can arise during the configuration process due to contradictions between some/all stakeholders’ configuration choices. Detecting and resolving such situation rise two major challenges: choosing which choices to omit, and taking stakeholders’ preferences into account. Several SPL collaborative configuration approaches are available. However, they either do not present detailed information on the strategies for conflict resolution, or they rely on a systematic process that resolves conflicts by prioritizing configuration decisions made at earlier stage, constraining therefore some of stakeholders’ choices. The lack of flexibility may hinder conflict resolution as choices taken at earlier stages overlay those at later phases. To mitigate these limitations, we propose a new collaborative configuration approach (Colla-Config) that provides a preference-based conflict resolution method within a free-order configuration process; each stakeholder expresses his/her preferences through a set of substitution rules, and freely makes his/her configuration decisions towards the desired product, without being constrained by the configuration decisions made by the other ones. To assess the feasibility and the usability of the proposed approach, we conducted a usability test designed following the ISO/IEC 25062:2006 Common Industry Format for usability tests. Results of the experiments provide preliminary evidence of the approach feasibility and the tool ability to properly support the SPL collaborative configuration

DEVELOPING AN E-COMMERCE SOLUTION ARCHITECTURE BY A COTS-BASED REUSE APPROACH

ABSTRACT- In this paper, we deal with the design and implementation of an e-commerce web site architecture by using a reuse development approach where the architecture of an e-commerce solution is reused with its different components without developing them from scratch. In fact, this architecture is the same for all the commerce web sites and adopting the traditional development life cycle becomes more costly then reusing existing components of the architecture. We deal specifically with a COTS based development approach where COTS components mean Commercial Off The Shelf. Our contribution consists in proposing a process which will guide the developer in his/her choice of the best COTS components for its application of e-commerce, guidelines about which methods to use for selecting and integrating these components. KEY WORDS: e-commerce, merchant web sites, reuse software engineering, COTS-based development. 1

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Partial KCNQ1OT1 hypomethylation: A disguised familial Beckwith–Wiedemann syndrome as a sporadic adrenocortical tumor

Beckwith–Wiedemann syndrome has a wide spectrum of complications such as embryonal tumors, namely adrenocortical tumor. Tumor predisposition is one of the most challenging manifestations of this syndrome. A 45-day old female with a family history of adrenocortical tumor presented with adrenocortical tumor. The case raised suspicion of a hereditary Beckwith–Wiedemann syndrome, therefore molecular analysis was undertaken. The results revealed partial KCNQ1OT1 hypomethylation in the infant's blood DNA which was associated with a complete loss of methylation in the infant's adrenocortical tumor tissue. It is unique for familial Beckwith–Wiedemann syndrome caused by KCNQ1OT1 partial hypomethylation to manifest solely through adrenocortical tumor. Incomplete penetrance and specific tissue mosaicism could provide explanations to this novel hereditary Beckwith–Wiedemann syndrome presentation