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See detailNegative parity baryons in the 1/Nc expansion: the three towers of states revisited.
Matagne, Nicolas; Stancu, Floarea ULg

in Physical Review. D : Particles and Fields (2012), D86

We discuss the compatibility between the quark-shell picture and the meson-nucleon scattering picture in large $N_c$ QCD for mixed symmetric $\ell$ = 1 states previously analyzed by using a simple ... [more ▼]

We discuss the compatibility between the quark-shell picture and the meson-nucleon scattering picture in large $N_c$ QCD for mixed symmetric $\ell$ = 1 states previously analyzed by using a simple Hamiltonian including operators up to order $\mathcal{O}(N^0_c)$ defined in the standard ground state symmetric core + excited quark procedure. Here we introduce a Hamiltonian of order $\mathcal{O}(N^0_c)$ defined in a new approach where the separation of the system into two parts is not required. Three degenerate sets of states (towers) with the same quantum numbers as in the scattering picture and in the standard procedure are obtained. Thus the compatibility is equally achieved. The eigenvalues of the presently chosen Hamiltonian also have simple analytic expressions, depending linearly on the three dynamical coefficients entering the Hamiltonian. This reinforces the validity of the new approach which had already successfully described excited negative parity baryons in a large energy range. [less ▲]

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See detailNegative parity nonstrange baryons in large Nc QCD: quark excitation versus meson-nucleon scattering
Stancu, Floarea ULg; Matagne, Nicolas ULg

in Bled Workshops in Physics (2011), 12(1), 57-63

We show that the two complementary pictures of large $N_c$ baryons - the single-quark orbital excitation about a symmetric core and the meson-nucleon resonance -- are compatible for $\ell$ = 3 SU(4 ... [more ▼]

We show that the two complementary pictures of large $N_c$ baryons - the single-quark orbital excitation about a symmetric core and the meson-nucleon resonance -- are compatible for $\ell$ = 3 SU(4) baryons. The proof is based on a simple Hamiltonian including operators up to order $\mathcal{O}(N^0_c)$ used previously in the literature for $\ell$ = 1. [less ▲]

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See detailNegative polarity as a trigger for the development of modal meaning
Davidse, Kristin; Van linden, An; Brems, Lieselotte ULg

Conference (2014, October)

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See detailNegative purifying selection drives prion and doppel protein evolution
Tsangaras, K.; Kolokotronis, S.-O.; Ulrich, R. G. et al

in Journal of Molecular Evolution (2014), 79(1-2), 12-20

The prion protein (PrP) when misfolded into the pathogenic conformer PrPSc is the major causative agent of several lethal transmissible spongiform encephalopathies in mammals. Studies of evolutionary ... [more ▼]

The prion protein (PrP) when misfolded into the pathogenic conformer PrPSc is the major causative agent of several lethal transmissible spongiform encephalopathies in mammals. Studies of evolutionary pressure on the corresponding gene using different datasets have yielded conflicting results. In addition, putative PrP or PrP interacting partners with strong similarity to PrP such as the doppel protein have not been examined to determine if the same evolutionary mechanisms apply to prion paralogs or if there are coselected sites that might indicate how and where the proteins interact. We examined several taxonomic groups that contain model organisms of prion diseases focusing on primates, bovids, and an expanded dataset of rodents for selection pressure on the prion gene (PRNP) and doppel gene (PRND) individually and for coevolving sites within. Overall, the results clearly indicate that both proteins are under strong selective constraints with relaxed selection on amino acid residues connecting α-helices 1 and 2. © 2014 Springer Science+Business Media New York. [less ▲]

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See detailNegative refraction: theory and application to thin metal layer superlens
Lecler, Sylvain; Frere, Benjamin; Habraken, Serge ULg et al

in Proceedings of SPIE (2008), 6987

The main concepts dealing with negative refraction are clarified in order to understand if a high conductive metal layer thinner than the wavelength can really be considered as a metamaterial with a ... [more ▼]

The main concepts dealing with negative refraction are clarified in order to understand if a high conductive metal layer thinner than the wavelength can really be considered as a metamaterial with a negative refraction index. The theoretical method to find the direction of phase velocity is clearly explained. The use of the causality principle is presented. We discuss why the negative refractive metamaterial has to be regarded as a dispersive one. Discussions are illustrated by means of FDTD simulations. The superlens application is presented. We explain why it is not obvious to consider a thin metal layer as a negative refractive material. [less ▲]

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See detailNegative Relative Clauses in Late Egyptian. A Functional Perspective
Sojic, Nathalie ULg

Poster (2015, August 26)

The poster contains a functional taxonomy of the negative relative clauses in Late Egyptian

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See detailNegative valence affects false working memories too
Dehon, Hedwige ULg; Martial, Charlotte ULg

Poster (2013, May 28)

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See detailNegative wind anomalies generated a diminution of productivity in the North Atlantic in 2010
Troupin, Charles ULg; Machín, Francis

Poster (2012, April 27)

The weakening of the wind intensity in winter 2010, related to a low NAO index, generated unseen temperature anomalies and a significant decrease of biological activity in the Canary Current upwelling ... [more ▼]

The weakening of the wind intensity in winter 2010, related to a low NAO index, generated unseen temperature anomalies and a significant decrease of biological activity in the Canary Current upwelling system. [less ▲]

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See detailNegative wind anomalies generated a diminution of productivity of in the North Atlantic in 2010
Troupin, Charles ULg; Machín, Francisco

Poster (2012, November 14)

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See detailNégativité et finitude de l'élan vital
Caeymaex, Florence ULg

in Annales bergsoniennes (2008), IV

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See detailNegentiende-eeuwse anglofilie in Nederland
Steyaert, Kris ULg

in Spiegel der Letteren (in press), 57(3),

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See detailThe neglected intrinsic resistome of bacterial pathogens.
Fajardo, Alicia; Martinez-Martin, Nadia; Mercadillo, Maria et al

in PloS one (2008), 3(2), 1619

Bacteria with intrinsic resistance to antibiotics are a worrisome health problem. It is widely believed that intrinsic antibiotic resistance of bacterial pathogens is mainly the consequence of cellular ... [more ▼]

Bacteria with intrinsic resistance to antibiotics are a worrisome health problem. It is widely believed that intrinsic antibiotic resistance of bacterial pathogens is mainly the consequence of cellular impermeability and activity of efflux pumps. However, the analysis of transposon-tagged Pseudomonas aeruginosa mutants presented in this article shows that this phenotype emerges from the action of numerous proteins from all functional categories. Mutations in some genes make P. aeruginosa more susceptible to antibiotics and thereby represent new targets. Mutations in other genes make P. aeruginosa more resistant and therefore define novel mechanisms for mutation-driven acquisition of antibiotic resistance, opening a new research field based in the prediction of resistance before it emerges in clinical environments. Antibiotics are not just weapons against bacterial competitors, but also natural signalling molecules. Our results demonstrate that antibiotic resistance genes are not merely protective shields and offer a more comprehensive view of the role of antibiotic resistance genes in the clinic and in nature. [less ▲]

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See detailA Neglected Reservoir of Mamluk Literature: al-Ṣafadī and his Tadhkira
Bauden, Frédéric ULg

Scientific conference (2010, April 16)

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See detailLas negociaciones UE-Mercosur: un juego con pocas cartas en la mesa?
Santander, Sébastian ULg

in Revista de Derecho Internacional y del Mercosur (2003), 2

L'UE et le Mercosur sont engagé depuis de nombreuses années dans des négociations commerciales dans l'objectif de sceller un accord d'association devant intégrer une zone de libre-échange interrégionale ... [more ▼]

L'UE et le Mercosur sont engagé depuis de nombreuses années dans des négociations commerciales dans l'objectif de sceller un accord d'association devant intégrer une zone de libre-échange interrégionale. Plusieurs obstacles affectent les négociations. Pour l'UE l'agriculture reste un domaine très sensible d'autant que les pays d'Amérique du Sud ont d'importants avantages comparatifs dans ce secteur. Pour les économies des pays du Mercosur, l'industrie et les services constituent de véritables sujets sensibles. [less ▲]

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See detailNegociation and Transaction in a context of restructuring. The role of actors: trust and uncertainy
Robert, Jocelyne ULg

Conference (2006, June 12)

In the current context of globalization and industrial restructuring, we find it interesting to analyse a negotiation about a re-opening of a production site within a multinational enterprise. This ... [more ▼]

In the current context of globalization and industrial restructuring, we find it interesting to analyse a negotiation about a re-opening of a production site within a multinational enterprise. This negotiation between trade unions and management representatives was strategic for the revival of production activity and retention of 10,000 direct and indirect jobs. It allows us to illustrate the “structuration’ theory of Giddens (1990) insofar as we cannot ignore neither the importance of structures nor the actions of individuals; each element has an influence on the other and is influenced in return. In a first section, we analyse to what degree trade unions can be considered as ‘stakeholders’ by reviewing different theories of ‘Corporate social responsibility’ and of ‘Corporate Stakeholders’. Our analysis highlights the importance of trade unions as ‘corporate stakeholders’ in a situation of social negotiation on restructuring in a steel group. This analysis cannot however ignore the specific context of the situation: informal feature of the negotiation, unpredictability of the result, international competitive context, conflicting issues of the reorganisation. We present and analyse in the second section the context and the different stages of the negotiation on the reopening of activities at the Belgium steel plant, at the light of interviews with union representatives involved in this negotiation. More than other types of negotiation, those concerning corporate restructuring are stressing and risky because their impacts on the employment of thousands of persons and the economy of a whole region. We analyse the different stages of this negotiation with regard to ethical questioning. Our analysis is mainly based on the point of view expressed by one of the ‘parties’, making thus reference to ‘corporate social responsibility’ theory and more specifically to the ‘stakeholders theory’ through the union lens. We refer to the concept of ‘social transaction’ to analyse the play of the actors in this social negotiation. We will attempt to explain how Corporate Social Responsibility on one side, and relations between various 'stakeholders’ on the other side, give a specific perspective to a negotiation process. The third and final section is devoted to a critical analysis of key features of trust and uncertainty in relation to these negotiations. The concepts of trust and uncertainty notably will permit to explain the importance of taking into consideration the way of how things happen and understand how processes are elaborated. Modern societies are characterised by uncertainty. Faced with it, social actors can search for trust relationship to find some stability. Communication of information can positively contribute to the construction of a climate of trust in organisation. Negotiation spaces may be limited by important constraints but resources could be renewed or created by actors themselves. We will conclude by trying, doubtless in a utopian way, to situate the present case study in respect to a democratic process of social change. A search of compromise could respond to situations of uncertainty. Besides, the process of trust elaboration is a response to uncertain situations. Uncertainty is a fundamental resource of a negotiation and a source of power for those who can control and use it in their transactions. [less ▲]

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See detailNegociation and Transaction in the Context of Restructuring: Ethics, Trust and Social Responsability
Robert, Jocelyne ULg

in Harrisson, Denis; Szell, György; Bourque, Reynald (Eds.) Social Innovation,the Social Economy and World Economic Development (2009)

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See detailLa négociation collective d’une maladie professionnelle : la pneumoconiose des ouvriers mineurs en Belgique (c. 1937- c. 1970)
Geerkens, Eric ULg

in Rainhorn, Judith (Ed.) Santé et travail à la mine XIXe-XXIe siècle (2014)

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See detailLa négociation des contrats publics en cours d'exécution et le droit communautaire
Durviaux, Ann-Lawrence ULg

in Jaarboek Overheidsopdrachten (2011)

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See detailNégociation du sens du travail et définition du groupe interprofessionnel : les cas des projets exploratoires dans le champ de la santé mentale en Belgique
Thunus, Sophie ULg

Conference (2014, June 19)

Au printemps 2010, les ministres en charge de la santé publique ont annoncé la mise en place d’une grande réforme de l’organisation des soins de santé mentale en Belgique. Le modèle d’organisation à ... [more ▼]

Au printemps 2010, les ministres en charge de la santé publique ont annoncé la mise en place d’une grande réforme de l’organisation des soins de santé mentale en Belgique. Le modèle d’organisation à mettre en place et le programme de la réforme étaient exposés dans un petit guide bleu distribué aux participants lors d’un événement national auquel assistaient les acteurs- clé du champ, notamment des professionnels de la santé mentale, les associations d’usagers, les responsables des organisations de soins locales, les autorités administratives régionales, des experts scientifiques. Cette réforme s’inscrivait dans un contexte international caractérisé par une mutation d’un modèle de soins basé sur la psychiatrie résidentielle, vers un modèle de soins de santé mentale communautaire. Au niveau Belge, la réforme était présentée comme l’étape ultime d’un processus qui aurait débuté à la fin des années 1990, par la mise en place de structures de soins alternatives et de projets exploratoires, pour aboutir en 2010, avec l’exploration et l’institutionnalisation progressive d’un modèle de soins résolument communautaire. Aussi, étant donné l’importance des enjeux institutionnels et professionnels associés à ce processus du changement, la réforme reposait sur un dispositif d’action publique original. Celui-ci impliquait directement les acteurs locaux en les invitant à participer à la définition de nouvelles modalités de travail, qui seraient progressivement évaluées et collectées par les autorités publiques. Dans cet article, nous proposons d’analyser ce processus de changement en le replaçant dans le processus temporel et dans le cadre institutionnel dans lequel il prend place. Effectivement, nous souhaitons mettre en évidence que les ressorts du changement, compris comme la capacité à mobiliser des pratiques professionnelles alternatives et des réseaux d’acteurs développés au cours des dernières décennies, sont difficilement compréhensibles en dehors d’une telle conceptualisation. De même, les jeux d’acteurs susceptibles de faire obstacle au changement, ou de lui donner des directions particulières, sont le fruit d’une construction sociale progressive, dont les premières bases ont été posées au lendemain de la seconde guerre. Cette approche du changement dans l’organisation du travail en santé mentale est principalement ancrée en sociologie de l’action collective et en sociologie des professions. Ces deux approches ont connu des évolutions spécifiques dont certaines se sont révélées pertinentes par rapport à notre domaine de recherche. Nous présentons ces développements dans la première partie de cet article, afin d’expliquer le cadre d’analyse qui sous-tend les deux parties suivantes. L’approche interactionniste du changement et les principaux concepts de la sociologie de l’action organisée sont centraux à ce cadre d’analyse. Ils supportent le récit de l’évolution du champ au cours des dernières décennies et celui de la réforme en cours, présentés dans les secondes et troisièmes parties de cet article. Ces deux récits alimentent à leur tour des considérations relatives aux conditions sociales et techniques dans lesquelles des pratiques professionnelles alternatives, ou « marginales », peuvent être utilisées au sein d’un processus de changement portant à la fois sur le modèle professionnel et institutionnel dominant le champ de la santé mentale. Ces considérations sont présentées dans la quatrième et dernière partie de cet article. [less ▲]

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