Analytical evaluation of virgin olive oils produced from three varieties Koroneiki , Arbequina and Arbosana grown in east of Morocco

Poster (2013, April)

An in-line shearography setup based on circular polarization gratings

in Optics & Lasers in Engineering (2013)

The shearing amount defines the resolution of a speckle shearing interferometer and the shearing direction defines the sensitivity direction of the setup. The properties of circular (cycloid) holographic ... [more ▼]

The shearing amount defines the resolution of a speckle shearing interferometer and the shearing direction defines the sensitivity direction of the setup. The properties of circular (cycloid) holographic polarization gratings recorded in liquid crystal polymers can be used to build a new multi-shearing direction and amount shearography setup. The polarization states of the diffracted beams offer an easy way to produce phase shifts and thus to compute the phase contained in the shearograms. The theoretical bases of such a device are highlighted and an original compact and full in-line setup is proposed. First experimental results of delamination detection and flaw detection by shearography are presented. A discussion on the importance of the grating recording and the polarization orientation points out the best working requirements. [less ▲]

Quadratization of symmetric pseudo-Boolean functions

Conference (2013, April)

We consider the problem of minimizing an arbitrary pseudo-Boolean function f(x), that is, a real-valued function of 0-1 variables. In recent years, several authors have proposed to reduce this problem to ... [more ▼]

We consider the problem of minimizing an arbitrary pseudo-Boolean function f(x), that is, a real-valued function of 0-1 variables. In recent years, several authors have proposed to reduce this problem to the quadratic case by expressing f(x) as min{g(x,y):y∈{0,1}^m}, where g(x,y) is a quadratic pseudo-Boolean function of x and of additional binary variables y. We say that g(x,y) is a quadratization of f. In this talk, we investigate the number of additional variables needed in a quadratization when f is a symmetric function of the x-variables. The cases where f is either a positive or a negative monomial are of particular interest, but some of our techniques also extend to more complex functions, like k-out-of-n or parity functions. Joint work with Martin Anthony, Endre Boros and Aritanan Gruber [less ▲]

Carnet de pédiatrie: propédeutique clinique et d'imagerie

Learning material (2013)

Des manuels scolaires pour mettre l'élève en état de recherche

Article for general public (2013)

Cet interview a été réalisé suite à l'obtention par Jean-Louis Jadoulle du Prix Zénobe 2012, décerné par le Conseil Economique et Social Wallon.

Thérapeutiques récentes des tendinopathies du sportif (ondes de choc, injections de plaquettes, ...)

in Abstract book du 21ème Séminaire hivernal de Médecine sportive 2013 (2013, April)

The effect of heterogeneity of diffusion parameters on chloride transport in low-permeability argillites

in Environmental Earth Sciences (2013), 68(7), 1835-1848

Understanding flow and transport in low-permeability media is very important in the context of nuclear waste disposal, oil and gas reservoirs and long term evolution of groundwater systems. In low ... [more ▼]

Understanding flow and transport in low-permeability media is very important in the context of nuclear waste disposal, oil and gas reservoirs and long term evolution of groundwater systems. In low-permeability media, transport by diffusion is often the most important mass transport process. This study investigates the effect of the heterogeneity of diffusion parameters on mass transport in low-permeability media. A geostatistical approach for integrating heterogeneity of diffusion parameters in groundwater flow and transport models is proposed and applied to the Toarcian argillites in France which are studied in the framework of feasibility of storing radioactive waste in deep clayey massifs. Stochastic fields of the diffusion parameters of the Toarcian argillites (France) are generated based on 64 measured values of diffusion coefficient and diffusion accessible porosity and used as input for a 3D local-scale groundwater flow and transport model. The chloride concentrations computed by these heterogeneous models are compared to the measured chloride concentrations and to concentrations calculated with a model in which the Toarcian argillites are subdivided into several homogeneous zones. The heterogeneous simulations result in a slightly better correspondence between measured and calculated values and have the additional advantage that the measured diffusion coefficient values in the Toarcian are perfectly honored in the model. This study shows that small-scale variability of diffusion parameters has a significant effect on solute concentrations and omitting this heterogeneity may be a problem in transport calculations in low-permeability media, depending on the specific setting and objectives of the study. [less ▲]

Clauses d'élection de for et procédures concurrentes : les nouveautés du Règlement Bruxelles Ibis

Conference (2013, April)

Ces documents constituent le support de présentation utilisé lors d'une conférence consacrée au Règlement Bruxelles Ibis. Ils font le point sur les nouveautés apportées au régime des clauses d'élection de ... [more ▼]

Ces documents constituent le support de présentation utilisé lors d'une conférence consacrée au Règlement Bruxelles Ibis. Ils font le point sur les nouveautés apportées au régime des clauses d'élection de for ainsi qu'au traitement réservé aux procédures concurrentes [less ▲]

L’Europe face à la montée en puissance de la Chine : miracle ou péril jaune?

in Revue Nouvelle (2013)

Par-delà le volontarisme des discours officiels, la montée en puissance de la Chine n’est pas sans impact sur l’UE ni sur l’évolution des relations sino-européennes. Considérant la place de l’économie ... [more ▼]

Par-delà le volontarisme des discours officiels, la montée en puissance de la Chine n’est pas sans impact sur l’UE ni sur l’évolution des relations sino-européennes. Considérant la place de l’économie dans leurs stratégies respectives pour s’établir comme « puissance » mondiale, cet article tente de comprendre les enjeux clés de la « stratégie » économique chinoise et d’identifier les incitants et contraintes pour l’Europe d’un accroissement de ses échanges avec Pékin. Dans un contexte de crise où la réalité macroéconomique les enjoint à repenser leur « modèle » de développement, la Chine : miracle ou péril jaune pour l’Europe ? [less ▲]

Evolving science, technology and innovation policies in Belgium: a comparative study

Conference (2013, April)

Science, technology and innovation (STI) policies have gone through deep changes since the early 80’s. Multiple scholars have shown that there are new forms of links, or a renewed “contract” between ... [more ▼]

Science, technology and innovation (STI) policies have gone through deep changes since the early 80’s. Multiple scholars have shown that there are new forms of links, or a renewed “contract” between science, as an institution, and the society: effects of neoliberalism, public controversies or technology assessment (TA) practices are some common features of this transformation. Innovation is pushed forward by policymakers as a crucial tool for economic growth and competitiveness of political entities. In other words, there is a new regime of STI governance. As a PhD student, I investigate the policies of science and innovation in Belgium. Since the regionalization of these competences in the 1980’s, the STI regimes have evolved separately in Flanders and Wallonia. The goal of my research is to depict and compare how constitutive elements of the regimes such as discourses, tools, institutions, networks, etc. have changed in the two Regions. Adopting a cognitive approach in policy analysis, I focus on the imaginaries or master narratives that shape programs and individuals at different policy levels. These levels range from the “micro” (individual interactions in the institutions) to the “macro” (the EU and OECD), the “meso” level being the core of the research question (regional programs and institutions). I seek to point out the local enactment of ideas such as “regional competitiveness”, “innovation-led growth”, “clustering” and its impact on STI regime. The research relies on document analysis, participant observation, and in depth semi-structured interviews designed as life stories of key STI informants. [less ▲]