The network structure of visited locations according to geotagged social media photos

Businesses, tourism attractions, public transportation hubs and other points of interest are not isolated but part of a collaborative system. Making such collaborative network surface is not always an easy task. The existence of data-rich environments can assist in the reconstruction of collaborative networks. They shed light into how their members operate and reveal a potential for value creation via collaborative approaches. Social media data are an example of a means to accomplish this task. In this paper, we reconstruct a network of tourist locations using fine-grained data from Flickr, an online community for photo sharing. We have used a publicly available set of Flickr data provided by Yahoo! Labs. To analyse the complex structure of tourism systems, we have reconstructed a network of visited locations in Europe, resulting in around 180,000 vertices and over 32 million edges. An analysis of the resulting network properties reveals its complex structure.Comment: 8 pages, 3 figure

Détermination des contraintes résiduelles de dépôts électrolytiques de chrome réalisés à partir d’une solution de chrome hexavalent

Des dépôts de chrome ont été effectués dans un bain standard (250 g/l CrO3, 2,5 g/l H2SO4), à 40 A/dm2 et à différentes températures de chromage (25 à 75°C). Les contraintes résiduelles furent déterminées par rayons X et par flexion d’une lame mince. Les résultats montrent que le niveau des contraintes dépend fortement de la microstructure du chrome. Lorsque celle-ci est équiaxe non texturée (température de chromage inférieure à 40°C), les contraintes sont négligeables. Par contre, lorsque les dépôts sont colonnaires et texturés {111} (température de chromage supérieure à 40°C), les contraintes sont élevées. L’évolution des contraintes en fonction de l’épaisseur déposée prouve que le niveau des tensions est contrôlé par la microstructure. Les modèles de l’hydrure et de la coalescence des cristallites ne sont pas satisfaisants. Les désorientations entre grains et/ou le dégazage via les surfaces de contact entre grains semblent jouer un rôle majeur dans la création des contraintes. Des recherches complémentaires doivent être menées afin de conclure sur la validité de l’un ou l’autre des mécanismes microstructuraux étudiés

Etude préléminaire sur le caractérisation du sous oxyde de bore (B6O) au moyen de la réaction 16O (31H, 10n)18F

International audienc

Towards Automated Business Process Deduction through a Social and Collaborative Platform

Part 12: Collaboration PlatformsInternational audienceThe French project OpenPaaS aims at providing a social and collaborative platform that supports inter-organizational collaborations. This platform is a social network in which subscribing organizations are defined by their profiles (i.e. their capabilities). In response to a collaboration opportunity suggested by an organization, the IT system intends to automatically deduce a corresponding inter-organizational process, meaning that it enables simultaneously (i) the discovery of the collaborative partners and (ii) the building of a collective business process model. This paper aims at describing the interactions that take place first, between the system and the users and second, within the system between the IT components. It also provides an overview of two specific reconciliations in the context of such a design of emerging networks: (i) functional versus non-functional and (ii) business versus technical

Determination of the composition of homogeneous light element binary compounds using charged particle induced nuclear reactions

International audienceIn this paper we describe the application of nuclear reactions induced by charged particles for the instrumental analysis of homogeneous binary compounds. The principle of a very accurate method of calibration, the "average stopping power" method, is given. The overall accuracy of the analytical results is discussed, and examples of analysis are given

Creating agility in traffic management by collaborative service-dominant business engineering

Traffic management is a business domain characterized by an infrastructure-dominant approach to new developments: the focus is typically on innovating assets such as traffic detection systems, road signage and traffic information systems. This domain also has a large number of involved stakeholders, such as road authorities, municipalities, technology providers and road users of various kinds. Faster changing traffic management requirements and increasing complexity of the collaborative networks required to meet these requirements render traditional approaches to business design in traffic management too rigid. We have applied collaborative, service-dominant business engineering to prototype a basis for new levels of business agility in multi-stakeholder traffic management. Collaborative workshops have shown to be a useful means to quickly arrive at agile, customer-centric business models that allow decoupling from long-term infrastructure considerations. This paper demonstrates that service-dominant business engineering can be effective in an asset-dominant domain to increase business resilience in complex environments

Assessment of IS Integration Efforts to Implement the Internet of Production Reference Architecture

Part 9: Information Systems IntegrationInternational audienceAs part of a collaborative network, manufacturing companies are required to be agile and accelerate their decision making. To do so, a high amount of data is available and needs to be utilized. To enable this from a company internal information system perspective, the Internet of Production (IoP) describes a future information system (IS) architecture. Core element of the IoP is a digital platform building the basis for a network of cognitive systems. To implement and continuously further develop the IoP, manufacturing companies need to make architecture-related decisions concerning the accessibility of data, the processing of the data as well as the visualization of the information. The goal of this research is the development of a decision-support methodology to make those decisions, taking under consideration the evaluated IS integration effort. Therefore, this paper describes the allocation of IS functions and identifies the effort drivers for the respective IS integration by analyzing the integration possibilities. Conclusively this approach will be validated in a case study