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See detailTesting the bootstrap constraints in the strange sector
Semenov-Tyan-Shanskiy, Kirill ULg; Vereshagin, Vladimir

in Journal of High Energy Physics [=JHEP] (2013), 1304

In this paper the bootstrap conditions that follow from the general postulates of effective scattering theory (EST) are checked in the strange sector. We construct the system of tree level bootstrap ... [more ▼]

In this paper the bootstrap conditions that follow from the general postulates of effective scattering theory (EST) are checked in the strange sector. We construct the system of tree level bootstrap constraints for the renormalization prescriptions fixing the physical content of the theory. Then we perform the numerical testing of corresponding sum rules for the parameters of strange resonances. It is shown that, generally, the bootstrap constraints turn out consistent with presently known data on the strange resonance parameters. At the same time we point out few sum rules which cannot be saturated with modern data and discuss the possible reasons for such discrepancies. [less ▲]

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See detailAnalytical evaluation of virgin olive oils produced from three varieties Koroneiki , Arbequina and Arbosana grown in east of Morocco
Mansouri, F.; Ben Moumen, A.; Lopez, G. et al

Poster (2013, April)

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See detailComparative study of four safflower oils (Carthamus tinctorius) varieties grown in eastern of Morocco
Ben Moumen, A.; Mansouri, F.; Zraibi, L. et al

Poster (2013, April)

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See detailAn in-line shearography setup based on circular polarization gratings
Blain, Pascal ULg; Piron, Pierre ULg; Renotte, Yvon ULg et al

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 ▲]

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See detailLa gestion de la qualité de l’air en Belgique : une gouvernance multiniveau entre incertitudes politiques et techniques
Vanhaeren, Stéphanie ULg; Feron, Pauline ULg; Hendrickx, Kim ULg et al

in Telescope (2013), 19(hiver),

La gouvernance de l’État belge est caractérisée par un double processus de reconfiguration : vers le haut, par les dynamiques d’européanisation, et vers le bas, par un processus de régionalisation ... [more ▼]

La gouvernance de l’État belge est caractérisée par un double processus de reconfiguration : vers le haut, par les dynamiques d’européanisation, et vers le bas, par un processus de régionalisation approfondi. Par exemple, le domaine de l’environnement est aujourd’hui régionalisé, mais de nombreuses décisions sont prises au niveau de l’Union européenne, dont les instances décisionnelles n’intègrent pas pleinement le fait régional. Cet article s’appuie sur une étude menée auprès des instances fédérales et régionales chargées de la gestion de la qualité de l’air en Belgique. La traduction du cadre européen demanderait le déploiement d’une approche transversale environnement-santé associant tous les niveaux de pouvoir, mais les répondants dénoncent l’absence d’intégration de ces politiques aux niveaux régional et fédéral. Chaque niveau de pouvoir développe une dynamique propre pour réinterpréter la politique et les instruments définis au niveau européen. [less ▲]

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See detailInitiatives populaires de solidarité internationale en Wallonie et à Bruxelles : portrait et enjeux d'une coopération à taille humaine
Godin, Julie ULg

in Mondes en Développement (2013), 161(1), 19-32

Given the increasing number and the diversity of actors who today invest the field of development cooperation, we surveyed 171 popular initiatives of international solidarity in Wallonia and Brussels ... [more ▼]

Given the increasing number and the diversity of actors who today invest the field of development cooperation, we surveyed 171 popular initiatives of international solidarity in Wallonia and Brussels regions. This article aims to profile these actors and the issues they face in implementing their projects, as the one of professionalization which seems to be a key issue for the future. [less ▲]

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See detailQuadratization of symmetric pseudo-Boolean functions
Crama, Yves ULg

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 ▲]

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See detailLa PAC ? Marché conclu ?
Terrones Gavira, François ULg; Burny, Philippe ULg

Article for general public (2013)

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See detailCarnet de pédiatrie: propédeutique clinique et d'imagerie
Battisti, Oreste ULg

Learning material (2013)

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See detailTendinopathies et lésions particulières de la cheville et du pied du sportif
Crielaard, Jean-Michel ULg; Kaux, Jean-François ULg

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

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See detailPlatelet-rich plasma (PRP) to treat chronic upper patellar tendinopathies
Kaux, Jean-François ULg; Croisier, Jean-Louis ULg; Bruyère, Olivier ULg et al

in Abstract Book of the 3rd Congress of the ECOSEP (2013, April)

Background: Upper patellar tendinopathies remain often chronic and rebel to a thorough conservative treatment. Moreover, the option of a surgical treatment could be disappointing. New treatments are being ... [more ▼]

Background: Upper patellar tendinopathies remain often chronic and rebel to a thorough conservative treatment. Moreover, the option of a surgical treatment could be disappointing. New treatments are being developed. Injection of PRP is one of these. Platelets contain lot of growth factors which would have the potentiality to enhance the healing process of tendons. Even if in vitro and animal experiments have demonstrated this stimulation of tendon healing process1, clinical series are subject to controversy2. Methods: Twenty patients with chronic upper patellar tendinopathy were enrolled. Assessments [VAS, clinical examination with an algometer, algofunctional scores (IKDC and VISA-P), functional assessments (isokinetic and Optojump) and imagery (ultrasounds and MRI)]were made before infiltration of PRP, and 6 weeks and 3 months after. The PRP was obtained by an apheresis system (COM.TEC, Fresenius). Six millilitres of PRP were injected without local anaesthetic. One week after infiltration, patients started a 6-week standardised sub-maximal eccentric reeducation. Results: We observed a very significant improvement of the algofunctional status as soon as 6 weeks after the infiltration of PRP, and continued to a lesser extent up to 3 months. During functional evaluation, pain decreased as well, but without significant improvement of performances. No significant improvements in the imagery were observed. Interestingly, patients who had a VAS equal or below 1 after 3 months post-infiltration were younger (24.7 vs 32.2 y.o.). Moreover, these younger patients had a significant increase of the IKDC score (p=0.003), a significant improvement of pain during isokinetic evaluations (p<0.05), and during Optojump assessments (p=0.01). Seventy-five percent of subjects were able to return to sport, even if only half of these patients recovered the same level than before the tendinopathy. Discussion / Conclusions: This study demonstrates that a local infiltration of PRP associated with a submaximal eccentric protocol is efficient to improve symptoms of chronic upper patellar tendinopathies, non-responsive to classical conservative treatments. However, up to now, there is no consensus on the method to prepare the PRP. Indeed, each technique could provide a very different PRP (variations in the platelet concentrations and of the amount of red and white cells). [less ▲]

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See detailDes manuels scolaires pour mettre l'élève en état de recherche
Jadoulle, Jean-Louis ULg

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.

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See detailRegard scientifique sur l'écrivain Hubert Nyssen
Durand, Pascal ULg

Article for general public (2013)

Interview par Henri Deleersnijder à propos de la réédition du Nom de l'arbre (Espace Nord) et de la journée d'étude du 8 mai 2013, "Les écritures d'Hubert Nyssen"

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See detailThérapeutiques récentes des tendinopathies du sportif (ondes de choc, injections de plaquettes, ...)
Crielaard, Jean-Michel ULg; Kaux, Jean-François ULg

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

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See detailFAO Training in Crop Yield Forecasting. Improvement of the Crop Yield Forecasting System (CYFS) in Armenia: a new approach for satellite data integration. ARMENIA - Yerevan - January 2013.
Denis, Antoine ULg

Learning material (2013)

This manual describes a methodology to prepare the remote sensing database needed for the crop yield forecasting methodology developped by the University of Liege, in the case of Armenia.This manual has ... [more ▼]

This manual describes a methodology to prepare the remote sensing database needed for the crop yield forecasting methodology developped by the University of Liege, in the case of Armenia.This manual has been written for the training in Crop Yield Forecasting for Armenia that occurred between 21st and 25th January 2013 in Erevan – Armenia in the framework of the “EC/FAO Programme on information systems to improve food security decision-making in the European Neighbourhood Policy (ENP) East area”. This manual is intended to cover the Remote Sensing part only of the general CYFS. Despite written for the Armenian training this manual can serve as an example for all other countries. [less ▲]

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See detailBoundary lines in symbiosis forms
Parmentier, Eric ULg; Michel, Loïc ULg

in Symbiosis (2013)

Symbiosis can take different forms (parasitism, mutualism, commensalism, etc.) but boundaries between different types of symbiotic interactions are not well defined. The kinds of symbiotic associations ... [more ▼]

Symbiosis can take different forms (parasitism, mutualism, commensalism, etc.) but boundaries between different types of symbiotic interactions are not well defined. The kinds of symbiotic associations between organisms cannot however be restricted to isolated and distinct categories. These associations are part of a broad continuum in which it is difficult to know where one type of association ends and another begins. Moreover, different scientists use the same term to mean different things or different terms tomean the same thing. This can obscure what is biologically important and what is not. This communication proposes a new classification scheme, which simply and comprehensively illustrates relationships between the various kinds of associations. The scheme illustrates relationships clearly and highlights the continuum between types of associations. It further indicates where modifications to the scheme are possible over time. The classification of the association between two organisms can be reduced to two factors: 1) the impact incurred by the host (benefit or damage) and 2) the relative duration of the association (RDA), i.e. the ratio of the duration of the association to the life expectancy of the symbiont. The conceptual figure provides concrete examples and illustrates some relationships that can change during different life stages. This figure should help teachers and students in the understanding of symbiosis, and could be a starting point for future discussions in the continuously developing research fields studying ecological and evolutionary implications of symbiotic relationships. [less ▲]

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See detailClauses d'élection de for et procédures concurrentes : les nouveautés du Règlement Bruxelles Ibis
Wautelet, Patrick ULg

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 ▲]

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See detailRisk Horizon and Expected Market Returns
Hübner, Georges ULg; Lejeune, Thomas ULg

Conference (2013, April)

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See detailL’Europe face à la montée en puissance de la Chine : miracle ou péril jaune?
Wintgens, Sophie ULg

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 ▲]

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