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  • [hal-00814394] How to Enhance Privacy within DaaS service Composition?
    17 juillet 2018
    The composition of DaaS (Data-as-a-Service) services is a powerful solution for building value-added applications on top of existing ones. However, privacy concerns are still among the key challenges that keep hampering DaaS composition. Indeed services may follow different, conflicting privacy specifications with respect to the data they use and provide. In this paper, we propose an approach for privacyaware composition of DaaS services. Our approach allows specifying privacy requirements and policies and verifying the compatibility of services involved in a composition. We propose an adaptation protocol that makes it possible to reconcile the privacy specifications of services when incompatibilities arise in a composition. We validate the applicability of our proposal through a set of experiments.
  • [halshs-00687924] Quand les individus et les collectifs sociaux sont mis en danger par le travail en projet
    12 juillet 2018
    L'activité projet incarne dans une certaine littérature managériale le mythe de l'action heureuse. Investissez vous au travail ! Epanouissez vous en projet ! Mais le projet n'est-il pas aussi destructeur de sens, porteur de pathologies et de déstabilisations ? En entreprise, les projets sont devenus de véritables machines à exiger et à juger les individus. Bref, le " coté sombre " des projets existe. Cet article s'efforce d'en proposer une structuration provisoire en mobilisant la littérature managériale, embryonnaire sur le sujet, et de nombreux verbatims d'acteurs projets. Elle distingue trois catégories de risques et d'excès du mode projet : les effets sur l'individu de l'excès d'implication (1. ), les impacts du travail en projet sur les identités professionnelles et sur les modalités d'exercice des expertises (2. ) ainsi que sur les compétences et sur la cohérence du parcours de carrière (3. ).
  • [hal-01409538] Internationalisation et performance : une approche matricielle appliquée au secteur des équipements électriques
    12 juillet 2018
    Depuis plus de quarante ans, les chercheurs ont étudié la relation entre l'internationalisation des entreprises et leur performance financière. Alors que la plupart des études révèlent l'existence d'une relation, les chercheurs sont en désaccord sur la linéarité et la forme de la courbe statistique. Dans cet article, la relation est étudiée en utilisant une approche matricielle, avec une application statistique au secteur des équipements électriques. Les résultats montrent la non-linéarité du lien entre performance financière (ROE) et chiffre d'affaires à l'international.
  • [hal-01088221] Toward an systemic navigation framework to integrate sustainable development into the company
    12 juillet 2018
    In a very uncertain and competitive economy, companies have to cope with external constraints such as environmental and social issues, to gain competitive advantage. Over the last thirty years, numerous initiatives have appeared to deal with socio-environmental issues. However, contexts are complex and dynamics. Many authors therefore point out the need to establish a systemic perspective in order to improve the integration of sustainable issues into all company activities: from strategic decision-making to the end of the project. In addition, companies need to reinforce the relationship between general corporate development and eco-design activities. Based on literature review, this paper assumes that the integration of sustainability can be improved by developing a coherent and system approach between strategic, tactical and operational levels. The authors have chosen to demonstrate this assumption by targeting the environmental aspect of sustainability as a first step of their overall research.In this view, this paper proposes a navigation system composed of three modules: strategic, tactical and operational. This navigation system provides some pragmatic roadmaps for integrating environment into the company. Each module is linked to the others by the use of appropriate metrics. Bottom-up and top-down or middle-to-sides strategies are fully supported.To test this proposal, the navigation system is experimented retrospectively into an industrial process from the textile industry. The comparison between the initial situation and the experimental results allows authors to highlights potential environmental improvements. Some recommendations are made to challenges companies to use this navigation system, which argues in favor of environmental improvements.
  • [hal-00652620] Development of an Assistance Environment for Tutors Based on a Co-Adaptive Design Approach
    12 juillet 2018
    In this paper, we present a co-adaptive design approach named TE-Cap (Tutoring Experience Capitalisation) that we applied for the development of an assistance environment for tutors. Since tasks assigned to tutors in educational contexts are not well defined, we are developing an environment which responds to needs which are not precisely identified or not expressed by these users. Our approach rests on three development cycles which aim at gradually clarifying and refining users' needs and expectations which we translate into computing functionalities. Each cycle is composed of three steps that allow the use of prototypes developed with regard, on the one hand, to theories of users' activities and, on the other hand, to the needs that we have identified to be observed. We finally obtain a stable typology of users' needs and expectations upon which we base the development of the computer environment. We illustrate the two first cycles of this iterative and co-adaptive approach during the development of TE-Cap. We then discuss the difficulties raised by this type of approach.
  • [hal-00652622] Supporting the Interconnection of Communities of Practice: The example of TE-Cap 2
    12 juillet 2018
    In this paper, a general model for the Interconnection of Communities of Practice (ICP) is proposed. This model creates links between local Communities of Practice (CoPs) and global Communities of Practice on the Web. To hit the target platform specifications to support an ICP are first of all proposed, soon after the TE-Cap 2 (Tutoring Experience Capitalisation) platform for an ICP of tutors is made up to support people working on it. This platform allows the capitalisation of tutors' contextualised knowledge, by making it easily retrievable from all the tutors in their daily practice. At last a descriptive investigation over a four-month period and forty-two users registered on the platform is conducted. Results presented in this paper concern the usability of the platform and the relevance of the model with regard to tutors' needs.
  • [hal-01265999] Моралът на мениджъра: социология за управляващи
    12 juillet 2018
    This is a lecture given by a researcher who spent his life watching companies. In my investigation, all the interviewed participate in the scientific debate and the questions worked are questions that matter them. I tried to understand how a factory, a workshop, an office, is able to survive and grow. Factories survival is linked to the mastering of the techniques and the economy and human and management. I observed successes and collapses. Success, I looked for explanatory laws, failures often let me in disarray. I saw how many executives and managers do not know what to do when everything goes wrong. So my lecture aims to fill a gap in the teaching of business schools who teach to manage for the benefit of corporate profitability, but do not teach managers how to protect themselves and others from the decisions they make. The first point attempts to show how the decision requires the autonomy of the manager. The second point shows that the decision comes when management knowledge is unable to cope with situation. The third point shows that in cases of management failures, managers are more likely to take bad decisions and get out of their own morality. Finally, the paper ends with a plea for managers to use all the freedom of action they have.
    12 juillet 2018
    Beyond the debate about cultural obstacles to introducing management in Central Europe, the article highlights some basic principles relevant in any case about HRM practices useful in this region.
  • [hal-01150258] Reflection-in-Action Markers for Reflection-on-Action in Computer-Supported Collaborative Learning Settings
    12 juillet 2018
    We describe an exploratory study on the use of markers set during a synchronous collaborative interaction (reflection-in-action) for later construction of reflection reports upon the collaboration that occurred (reflection-on-action). During two sessions, pairs of students used the Visu videoconferencing tool for synchronous interaction and marker setting (positive, negative or free) and then individual report building on the interaction (using markers or not). A quantitative descriptive analysis was conducted on the markers put in action, on their use to reflect on action and on the reflection categories of the sentences in these reports. Results show that the students (1) used the markers equally as a note-taking and reflection means during the interaction, (2) used mainly positive markers both to reflect in and on action; (3) paid more attention in identifying what worked in their interaction (conservative direction) rather than in planning on how to improve their group work (progressive direction); (4) used mainly their own markers to reflect on action, with an increase in the use of their partners' markers in the second reflection reports; (5) reflected mainly on their partner in the first reflection reports and more on themselves in the second reports to justify themselves and to express their satisfaction.
  • [hal-01130953] A trace-based approach to identifying users’ engagement and qualifying their engaged-behaviours in interactive systems: application to a social game
    12 juillet 2018
    Analysing and monitoring users' engaged-behaviours continuously and under ecologically valid conditions can reveal valuable information for designers and practitioners, allowing them to analyse, design and monitor the interactive mediated activity, and then to adapt and personalise it. An interactive mediated activity is a human activity supported by digital interactive technologies. While classical metric methods fall within quantitative approaches, this paper proposes a qualitative approach to identifying users' engagement and qualifying their engaged-behaviours from their traces of interaction. Traces of interaction represent the users' activities with an interactive environment. The basis of our approach is to transform low-level traces of interaction into meaningful information represented in higher-level traces. For this, our approach combines three theoretical frameworks : the Self-Determination Theory, the Activity Theory and the Trace Theory. Our approach has been implemented and tested in the context of the QUEJANT Projet. QUEJANT targets the development of a system allowing the actors of Social Gaming to analyse players' engagement from an analysis of their activity traces. In order to demonstrate the feasibility of our approach, we implemented the whole process in a prototype and applied it to 12 players' interaction data collected over four months. Based on these interaction data, we were able to identify engaged and non-engaged users and to qualify their types of engaged-behaviours. We also conducted a user study based on a validation of our results by experts. The high prediction rate obtained confirms the performance of our approach. We finally discuss the limitations of our approach, the potential fields of application and the implications for digital behavioural interventions.

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