Last 7 days     Results 1701-1720 of 56970.   81 82 83 84 85 86 87 88 89 90 91   Les mustères de la "Viege noire" ou comment se passe la demande d'allocation de handicapMarquet, Françoise; RADERMECKER, Régis in Revue de l'Association Belge du Diabète (2016), 59(4), 9-13Detailed reference viewed: 20 (1 ULg) How should we study the light distribution of strong lensing galaxies ?Biernaux, Judith Poster (2016, July)Detailed reference viewed: 9 (1 ULg) Integration of Composites for Greener Engine - Rapport scientifique & techniqueAatach, Mohamed ; Gaydardzhiev, Stoyan Report (2016)The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main ... [more ▼]The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main parts of this project. The focus is on the review of technologies, reuse and resulting properties on the recycling of fibre reinforced polymers and the development of new processes for end-of-life aerospace grade advanced carbon fiber reinforced composite materials (electrodynamic and conventional fragmentation, physicochemical characterization, environmental impact assessment, etc.) [less ▲]Detailed reference viewed: 25 (1 ULg) Quadratic reformulations of nonlinear binary optimization problemsCrama, Yves Conference (2016, July)A {\em pseudo-Boolean function} is a real-valued function $f(x)=f(x_1,x_2,\ldots,x_n)$ of $n$ binary variables, that is, a mapping from $\{0,1\}^n$ to $\mathbf R$. \emph{Nonlinear binary optimization ... [more ▼]A {\em pseudo-Boolean function} is a real-valued function $f(x)=f(x_1,x_2,\ldots,x_n)$ of $n$ binary variables, that is, a mapping from $\{0,1\}^n$ to $\mathbf R$. \emph{Nonlinear binary optimization problems} of the form $$\label{eq:PBO} \min \{ f(x) : x \in \{0,1\}^n \},$$, where $f$ is a pseudo-Boolean function expressed as a multilinear polynomial in its variables, are notoriously difficult. For a pseudo-Boolean function $f(x)$ on $\{0,1\}^n$, we say that $g(x,y)$ is a \emph{quadratization} of $f$ if $g(x,y)$ is a quadratic polynomial depending on $x$ and on $m$ \emph{auxiliary} binary variables $y_1,y_2,\ldots,y_m$ such that $f(x)= \min \{ g(x,y) : y \in \{0,1\}^m \}$ for all $x \in \{0,1\}^n$. By means of quadratizations, minimization of $f$ is reduced to minimization (over the extended set of variables) of the quadratic function $g(x,y)$. This is of practical interest because minimization of quadratic functions has been thoroughly studied for the last few decades, and much progress has been made in solving such problems exactly or heuristically. This talk addresses two main types of questions. First, we want to determine the minimum number of auxiliary $y$-variables required in a quadratization of an arbitrary function~$f$. This question is rather natural since the complexity of minimizing the quadratic function $g(x,y)$ heavily depends (among other factors) on the number of binary variables~$(x,y)$. We establish tight lower and upper bounds on the number of auxiliary variables needed in such a reformulation. Next, we determine more precisely the number of auxiliary variables required by quadratizations of \emph{symmetric} pseudo-Boolean functions $f(x)$, i.e., functions whose value only depends on the number of variables equal to~$1$. [less ▲]Detailed reference viewed: 13 (1 ULg) Real-time capture of the folding-unfolding transitions in a single oligorotaxane foldamerSluysmans, Damien ; Hubert, Sandrine ; Bruns, Carson et alPoster (2016, July)Detailed reference viewed: 22 (0 ULg) On the relations between nonlinear resonances and nonlinear normal modesDetroux, Thibaut ; Noël, Jean-Philippe ; Kerschen, Gaëtan Conference (2016, July)Detailed reference viewed: 11 (2 ULg) De l’activation à la précarité : analyse de deux dispositifs d’intervention socialeGérard, Julie ; Vrancken, Didier Conference (2016, July)La lutte contre le chômage de longue durée et l’exclusion sociale par un retour à l’emploi représentent des enjeux essentiels des politiques actives du marché du travail. C’est pourquoi, cette ... [more ▼]La lutte contre le chômage de longue durée et l’exclusion sociale par un retour à l’emploi représentent des enjeux essentiels des politiques actives du marché du travail. C’est pourquoi, cette communication s’intéresse aux effets de l’intervention sociale sur les demandeurs d’emploi à partir de l’analyse de deux dispositifs d’activation situés en Belgique francophone : une Entreprise de Formation par le Travail et une agence de Titres-Services. Au moyen d’une étude qualitative reposant sur une soixantaine d’observations de situations d’interactions réalisée entre bénéficiaires et « travailleurs du social » (consultant, assistant social, formateur, etc.) et, d’une quarantaine d’entretiens semi-directifs, nous rendrons compte de l’action de ces deux dispositifs dans le domaine de l’insertion-socioprofessionnelle. Nous illustrerons combien, par l’articulation de politiques d’emploi à vocation universelle et de politiques particularistes destinées aux personnes les plus fragiles, ces dispositifs génèrent de véritables trappes à précarité. À terme, nous montrerons combien le maintien de ces dernières soulève la question du développement progressif d’un nouveau régime de protections, opérant a minima, voire par défaut, auprès des publics peu qualifiés face à la menace sourde que font peser le marché noir et, plus largement, l’informalité du travail. [less ▲]Detailed reference viewed: 59 (7 ULg) Disrupted interaction between self and memory in patients with Alzheimer’s diseaseGenon, Sarah ; Salmon, Eric ; Collette, Fabienne et alConference (2016, July)In humans, self and memory processes interact as evidenced by the self reference (SRE) and self reference recollection effects (SRRE). However, in patients with Alzheimer’s disease (AD), this relationship ... [more ▼]In humans, self and memory processes interact as evidenced by the self reference (SRE) and self reference recollection effects (SRRE). However, in patients with Alzheimer’s disease (AD), this relationship can be disrupted. This was evidenced by impaired SRE and SRRE in AD for recognition of adjectives previously judged for self-relevance, as well as recall of names of people previously linked to the self. For both materials, a qualitative impairment of the recollective experience for the self-related items was also observed in AD. A neuroimaging approach suggested that reduced SRE is related to decreased grey matter volume in the lateral prefrontal cortex (lPFC). Thus, retrieval of recent self-related memories is impaired in relation to altered high-order processes in lPFC in AD. [less ▲]Detailed reference viewed: 70 (4 ULg) European Commission, trade agreements, and diversity of cultural expressions: between autonomy and influenceVlassis, Antonios in European Journal of Communication (2016), 31(4)The Convention on diversity of cultural expressions – adopted by United Nations Educational, Scientific and Cultural Organization in 2005 – is a main international instrument within the global governance ... [more ▼]The Convention on diversity of cultural expressions – adopted by United Nations Educational, Scientific and Cultural Organization in 2005 – is a main international instrument within the global governance of cultural and audiovisual industries. For its part, the European Commission played a critical role in the negotiation, leading to the Convention on Diversity of Cultural Expressions’ adoption. In this respect, the article aims to explore why and how the Commission uses the Convention on Diversity of Cultural Expressions throughout the recent European Union trade negotiations, for which purposes and how the Convention on Diversity of Cultural Expressions influences the European Union foreign policy and its objectives. The article is more concerned with analysing the policy process through which the Commission’s strategy is formulated in light of the Convention on Diversity of Cultural Expressions and of the place of cultural and audiovisual industries within the European Union trade agreements and also concerned with understanding whether the Commission’s autonomy is transformed into influence within the policy process. [less ▲]Detailed reference viewed: 12 (3 ULg) Interactions entre élèves et phase de correction collective face à une tâche complexe de mathématiques : facteurs susceptibles de soutenir les apprentissages ou prothèses externes pour résoudre ?Fagnant, Annick ; Demonty, Isabelle; Dupont, Virginie et alConference (2016, July)Detailed reference viewed: 27 (2 ULg) The mechanical control of peri-implant bone remodeling investigated by in vivo imaging and in silico modelingLi, Zihui; Betts, Duncan; Kuhn, Gisela et alConference (2016, July)Detailed reference viewed: 12 (1 ULg) Meet the DamselfishesParmentier, Eric ; Frederich, Bruno in Frederich, Bruno; Parmentier, Eric (Eds.) Biology of Damselfishes (2016)Detailed reference viewed: 19 (3 ULg) Ontogeny and Early Life Stages of DamselfishesKavanagh, Kathryn; Frederich, Bruno in Frederich, Bruno; Parmentier, Eric (Eds.) Biology of Damselfishes (2016)Detailed reference viewed: 6 (0 ULg) Cerato-Mandibular Ligament: a Key Trait in Damselfishes?Olivier, Damien ; Frederich, Bruno ; Parmentier, Eric in Frederich, Bruno; Parmentier, Eric (Eds.) Biology of Damselfishes (2016)Detailed reference viewed: 14 (2 ULg) Trophic Ecology of DamselfishesFrederich, Bruno ; Olivier, Damien ; Gajdzik, Laura et alin Frederich, Bruno; Parmentier, Eric (Eds.) Biology of Damselfishes (2016)Detailed reference viewed: 30 (3 ULg) Analysis of SMOS sea surface salinity data using DINEOFAlvera Azcarate, Aïda ; Barth, Alexander ; Parard, Gaëlle et alin Remote Sensing of Environment (2016), 180n analysis of daily Sea Surface Salinity (SSS) at 0.15 ° × 0.15° spatial resolution from the Soil Moisture and Ocean Salinity (SMOS) satellite mission using DINEOF (Data Interpolating Empirical Orthogonal ... [more ▼]n analysis of daily Sea Surface Salinity (SSS) at 0.15 ° × 0.15° spatial resolution from the Soil Moisture and Ocean Salinity (SMOS) satellite mission using DINEOF (Data Interpolating Empirical Orthogonal Functions) is presented. DINEOF allows reconstructing missing data using a truncated EOF basis, while reducing the amount of noise and errors in geophysical datasets. This work represents a first application of DINEOF to SMOS SSS. Results show that a reduction of the error and the amount of noise is obtained in the DINEOF SSS data compared to the initial SMOS SSS data. Errors associated to the edge of the swath are detected in 2 EOFs and effectively removed from the final data, avoiding removing the data at the edges of the swath in the initial dataset. The final dataset presents a centered root mean square error of 0.2 in open waters when comparing with thermosalinograph data at their original spatial and temporal resolution. Constant biases present near land masses, large scale biases and latitudinal biases cannot be corrected with DINEOF because persistent signals are retained in high order EOFs, and therefore these need to be corrected separately. The signature of the Douro and Gironde rivers is detected in the DINEOF SSS. The minimum SSS observed in the Gironde plume corresponds to a flood event in June 2013, and the shape and size of the Douro river shows a good agreement with chlorophyll-a satellite data. These examples show the capacity of DINEOF to remove noise and provide a full SSS dataset at a high temporal and spatial resolution with reduced error, and the possibility to retrieve physical signals in zones with high initial errors. [less ▲]Detailed reference viewed: 56 (11 ULg) Ecomorphology and Iterative Ecological Radiation of DamselfishesFrederich, Bruno ; Cooper, W. James; Aguilar-Medrano, Rosaliain Frederich, Bruno; Parmentier, Eric (Eds.) Biology of Damselfishes (2016)Detailed reference viewed: 10 (0 ULg) Bioclimatism in Architecture : an evolutionary perspective from vernacular architecture to eco-adaptive architectureNguyen, Anh Tuan; Reiter, Sigrid Conference (2016, July)The well-known Darwinian evolutionary theory (1859) introduced natural selection as the most important mechanism of evolutionary processes at every level from biological systems, including species ... [more ▼]The well-known Darwinian evolutionary theory (1859) introduced natural selection as the most important mechanism of evolutionary processes at every level from biological systems, including species, individual organisms… to molecules such as DNA or proteins. In architecture we observe similar evolution processes which lead to the development of various architectural movements and concepts from common primitive living structures. The study points out that the development of bioclimatism in architecture has followed the pattern of a natural evolutionary process in which “natural selection” is likely motivated by several factors, including resources and environment problems, and driven by different mechanisms including novel building design concepts and methods, new standards and codes, discoveries in building science and construction costs. Finally, this study investigates new motivations in the era of climate change whose effects are expected to introduce more challenges as well as more trends towards a sustainable built environment through the new concept of Eco-adaptive architecture. [less ▲]Detailed reference viewed: 38 (3 ULg) On (Eventually) Monotone Dynamical Systems and Positive Koopman SemigroupsSootla, Aivar ; Mauroy, Alexandre Conference (2016, July)Monotone systems are dynamical systems whose solutions preserve a partial order in initial conditions for all times. It stands to reason that some systems may preserve a partial order only after an ... [more ▼]Monotone systems are dynamical systems whose solutions preserve a partial order in initial conditions for all times. It stands to reason that some systems may preserve a partial order only after an initial transient. These systems are usually called eventually monotone. While monotone systems have an easy characterization in terms of the sign pattern of the Jacobian matrix (i.e. Kamke-M\"uller condition), eventually monotone systems have not been characterized in such an explicit manner. In order to provide such a characterization, we drew inspiration from the results for linear systems, where eventually monotone (positive) systems are studied using the spectral properties of the system (i.e. Perron-Frobenius property). In the case of nonlinear systems, a spectral characterization of nonlinear eventually monotone systems is not straightforward, but can be obtained in the framework of the so-called Koopman operator. Additionally, we explore connections between (eventual) monotonicity and (eventual) positivity of the Koopman semigroup. This allows to view our results as a generalization of the Perron-Frobenius theory to nonlinear dynamical systems. We consider a biologically inspired example to illustrate the applicability of eventual monotonicity. [less ▲]Detailed reference viewed: 28 (4 ULg) Magnetocapillary self-assemblies: Swimming and micromanipulationGrosjean, Galien ; Hubert, Maxime ; Lagubeau, Guillaume et alPoster (2016, July)Floating magnetic particles can self-assemble into structures, by a combination of a magnetic dipole-dipole interaction and an attraction due to the interfacial deformation. These structures are ... [more ▼]Floating magnetic particles can self-assemble into structures, by a combination of a magnetic dipole-dipole interaction and an attraction due to the interfacial deformation. These structures are periodically deformed in a non reciprocal way using magnetic ﬁelds, which leads to controllable low Reynolds number locomotion. Such microswimmers provide a basis for micromanipulation applications such as transport of micro-objects, local mixing of ﬂuids or surface cleaning. [less ▲]Detailed reference viewed: 28 (10 ULg)