Last 7 days     Results 1341-1360 of 54931.   63 64 65 66 67 68 69 70 71 72 73   Perception of pitch accuracy in melodies: A categorical or continuous phenomenon?Larrouy, Pauline ; Franz, Simone; Poeppel, DavidConference (2016, July)In western music, a semitone constitutes a theoretical and perceptual boundary between tones and is defined as a unit for categorical perception of intervals (Burns & Ward, 1978). However, melodic ... [more ▼]In western music, a semitone constitutes a theoretical and perceptual boundary between tones and is defined as a unit for categorical perception of intervals (Burns & Ward, 1978). However, melodic perception does not rely exclusively on this category but also involves the notion of ‘correctness’. If we usually classify melodies as “in tune” or “out of tune” depending on the size of interval deviations (smaller than a semitone) along melodies, the transition between the two categories remains unclear. This study examines the process involved in pitch accuracy perception. Twenty-five participants identified melodies as “in tune” or “out of tune” and rated their confidence for each answer. The pitch manipulation consisted of the enlargement of an interval in 5 cent steps (from 0 to 50 cent deviation). The interval deviated was either a Major 2nd or a Perfect 4th and occurred in the middle or end of a 6-tone melody. The task was run twice, before and after an explicit definition of the two labels. Repeated measure ANOVAs were conducted to examine the effect of the deviation on the proportion of in- tune answers and on the confidence levels. For the participants who were able to learn the labels (n = 20), the proportion of in tune answers varies greatly according to the amplitude of the deviation and depended on the size of the interval manipulated. Associated with the confidence level measurement, the identification data support a categorical perception process. Interestingly, explicitly learning the labels increased the overall confidence but did not modify drastically the profile of the categories and the process behind the categorization. This study suggests that explicit learning is not necessary to develop higher order categories relative to “correctness”. Nevertheless, such a process seems limited to certain intervals. Further investigation of other intervals and individual differences seems promising to better understand the mechanisms underlying music perception. [less ▲]Detailed reference viewed: 26 (3 ULg) 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: 18 (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: 19 (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: 12 (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: 20 (0 ULg) On the relations between nonlinear resonances and nonlinear normal modesDetroux, Thibaut ; Noël, Jean-Philippe ; Kerschen, Gaëtan Conference (2016, July)Detailed reference viewed: 7 (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: 53 (4 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: 66 (4 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) Heritage Conservation in River Corridor Cities. The Case of Tripoli, Lebanon.Ginzarly, Manal ; Teller, Jacques Conference (2016, July)This article recognizes rivers as cultural heritage landscapes, as an integral component of cities common heritage and an element of collective memory and identity. It is based on the consideration that ... [more ▼]This article recognizes rivers as cultural heritage landscapes, as an integral component of cities common heritage and an element of collective memory and identity. It is based on the consideration that analysis of the socio-spatial relationship between the river and urban structure at different historical period can further lead to knowledge about the river contribution in forming the identity and sense of place of an urban area. This knowledge can be used to inform urban conservation as well as development practices to support the integral spatial and cultural relation between the city and the river in order to maintain the character of river city. This article takes the historic core in the city of Tripoli, Lebanon as a case study where conservation practices have followed a monument centric approach focusing on the restoration of heritage buildings and sites and neglecting the cultural value of the Abu Ali River flowing through the city. It conducts a multi- dimensional morphological analysis that is based on archival review and field work to extract the social value of the river and its contribution to the urban morphology of the city. [less ▲]Detailed reference viewed: 25 (4 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: 25 (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: 54 (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) The role of biochemical of bone turnover markers in osteoporosis and metabolic bone disease: a consensus paper of the Belgian Bone Club.Cavalier, Etienne ; Bergmann, P.; Bruyère, Olivier et alin Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA (2016)The exact role of biochemical markers of bone turnover in the management of metabolic bone diseases remains a topic of controversy. In this consensus paper, the Belgian Bone Club aimed to provide a state ... [more ▼]The exact role of biochemical markers of bone turnover in the management of metabolic bone diseases remains a topic of controversy. In this consensus paper, the Belgian Bone Club aimed to provide a state of the art on the use of these biomarkers in different clinical or physiological situations like in postmenopausal women, osteoporosis in men, in elderly patients, in patients suffering from bone metastasis, in patients with chronic renal failure, in pregnant or lactating women, in intensive care patients, and in diabetics. We also gave our considerations on the analytical issues linked to the use of these biomarkers, on potential new emerging biomarkers, and on the use of bone turnover biomarkers in the follow-up of patients treated with new drugs for osteoporosis. [less ▲]Detailed reference viewed: 13 (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: 36 (3 ULg)