Last 7 days     Results 1-20 of 3188. 1 2 3 4 5 6   La constitution au fil de ses versionsRegnier, Cindy ; Verjans, Pierre Book published by crisp (in press)Évolution de la Constitution belge depuis 1831Detailed reference viewed: 21 (1 ULiège) Influence of a dynamic seating habit on lumbar control motor in schoolchildrenFettweis, Tatiana ; Onkelinx, Marie-Noëlle; Schwartz, Cédric et alin Journal of Back and Musculoskeletal Rehabilitation (in press)BACKGROUND: Adequate motor control is considered important for spinal stability and the prevention of low back pain in adulthood and in childhood. OBJECTIVE: Given that the sitting position can affect ... [more ▼]BACKGROUND: Adequate motor control is considered important for spinal stability and the prevention of low back pain in adulthood and in childhood. OBJECTIVE: Given that the sitting position can affect proprioception, this study aimed to evaluate the influence of using at school a triangular and dynamic cushion on schoolchildren’s trunk motor control. METHODS: Thirty 8-year-old schoolchildren were randomized into a control group (n=15) and a “cushion group” (n=15), in which the children used the cushion for one year and a half. At the end of this period, a 3D-analysis was used to assess lumbar spine proprioception by means of a trunk repositioning task performed blindfolded in a seated position in two conditions (on a stable and on an unstable surface). RESULTS: The schoolchildren in the cushion group performed better at the trunk repositioning task (p=0.02) and hold their lumbar lordosis (p=0.03) better than the control children, in both conditions (stable and unstable). CONCLUSIONS: This preliminary study suggests that daily use of a triangular dynamic cushion has a beneficial impact on children’s lumbar proprioception. Further studies are needed to confirm these results and investigate the effectiveness of its use to prevent low back pain in adulthood. [less ▲]Detailed reference viewed: 55 (20 ULiège) Les Lettres médiévales à l'aube de l'ère typographiqueAdam, Renaud ; Henrard, Nadine ; Devaux, Jean et alBook published by Classiques Garnier (in press)Detailed reference viewed: 15 (2 ULiège) Stellar parameters for TRAPPIST-1Van Grootel, Valérie ; Silva Fernandes, Catarina ; Gillon, Michaël et alin Astrophysical Journal (in press)TRAPPIST-1 is an ultracool dwarf star transited by seven Earth-sized planets, for which thorough characterization of atmospheric properties, surface conditions encompassing habitability and internal ... [more ▼]TRAPPIST-1 is an ultracool dwarf star transited by seven Earth-sized planets, for which thorough characterization of atmospheric properties, surface conditions encompassing habitability and internal compositions is possible with current and next generation telescopes. Accurate modeling of the star is essential to achieve this goal. We aim to obtain updated stellar parameters for TRAPPIST- 1 based on new measurements and evolutionary models, compared to those used in discovery studies. We present a new measurement for the parallax of TRAPPIST-1, 82.4 $\pm$ 0.8 mas, based on 188 epochs of observations with the TRAPPIST and Liverpool Telescopes from 2013 to 2016. This revised parallax yields an updated luminosity of $L_*=(5.22\pm0.19)\times 10^{-4} L_{\odot}$, very close to the previous estimate but almost twice more precise. We next present an updated estimate for TRAPPIST-1 stellar mass, based on two approaches: mass from stellar evolution modeling, and empirical mass derived from dynamical masses of equivalently classified ultracool dwarfs in astrometric binaries. We combine them through a Monte-Carlo approach to derive a semi-empirical estimate for the mass of TRAPPIST-1. We also derive estimate for the radius by combining this mass with stellar density inferred from transits, as well as estimate for the effective temperature from our revised luminosity and radius. Our final results are $M_*=0.089 \pm 0.006 M_{\odot}$, $R_* = 0.121 \pm 0.003 R_{\odot}$, and $T_{\rm eff} =$ 2516 $\pm$ 41 K. Considering the degree to which TRAPPIST-1 system will be scrutinized in coming years, these revised and more precise stellar parameters should be considered when assessing the properties of TRAPPIST-1 planets. [less ▲]Detailed reference viewed: 26 (1 ULiège) Addressing the determinants of built-up expansion and densification processes at the regional scaleMustafa, Ahmed Mohamed El Saeid ; Van Rompaey, Anton; Cools, Mario et alin Urban Studies (in press)An in-depth understanding of the main factors behind built-up development is a key prerequisite for designing policies dedicated to a more efficient land use. Infill development policies are essential to ... [more ▼]An in-depth understanding of the main factors behind built-up development is a key prerequisite for designing policies dedicated to a more efficient land use. Infill development policies are essential to curb sprawl and allow a progressive recycling of low-density areas inherited from the past. This paper examines the controlling factors of built-up expansion and densification processes in Wallonia (Belgium). Unlike the usual urban/built-up expansion studies, our approach considers various levels of built-up densities to distinguish between different types of developments, ranging from low-density extensions (or sprawl) to high-density infill development. Belgian cadastral data for 1990, 2000, and 2010 were used to generate four classes of built-up areas, namely, non-, low-, medium- and high-density areas. A number of socioeconomic, geographic, and political factors related to built-up development were operationalized following the literature. We then used a multinomial logistic regression model to analyze the effects of these factors on the transitions between different densities in the two decades between 1990 and 2010. The findings indicate that all the controlling factors show distinctive variations based on density. More specifically, the centrality of zoning policies in explaining expansion processes is highlighted. This is especially the case for high-density expansions. In contrast, physical and neighborhood factors play a larger role in infill development, especially for dense infill development. [less ▲]Detailed reference viewed: 54 (7 ULiège) Temporal grouping effects in musical short-term memoryGorin, Simon ; Mengal, Pierre; Majerus, Steve in Memory (in press)Recent theoretical accounts of verbal and visuo-spatial short-term memory (STM) have proposed the existence of domain-general mechanisms for the maintenance of serial order information. These accounts are ... [more ▼]Recent theoretical accounts of verbal and visuo-spatial short-term memory (STM) have proposed the existence of domain-general mechanisms for the maintenance of serial order information. These accounts are based on the observation of similar behavioural effects across several modalities, such as temporal grouping effects. Across two experiments, the present study aimed at extending these findings, by exploring a STM modality that has received little interest so far, STM for musical information. Given its inherent rhythmic, temporal and serial organisation, the musical domain is of interest for investigating serial order STM processes such as temporal grouping. In Experiment 1, the data did not allow to determine the presence or the absence of temporal grouping effects. In Experiment 2, we observed that temporal grouping of tone sequences during encoding improves short-term recognition for serially presented probe tones. Furthermore, the serial position curves included micro-primacy and micro-recency effects, which are the hallmark characteristic of temporal grouping. Our results suggest that the encoding of serial order information in musical STM may be supported by temporal positional coding mechanisms similar to those reported in the verbal domain. [less ▲]Detailed reference viewed: 47 (3 ULiège) Sustainable biofuel: a question of scale and aimsCiervo, Margherita ; Schmitz, Serge in Moravian Geographical Reports (in press), 25(4), The predominant production model of Bioenergy, which is based on first-generation biofuels developed on a global scale, creates ecological impacts throughout the production chain, resulting in a paradox ... [more ▼]The predominant production model of Bioenergy, which is based on first-generation biofuels developed on a global scale, creates ecological impacts throughout the production chain, resulting in a paradox, as well as social unrest and territorial conflict. This paper focuses on agro-energy and second-generation biofuels, investigating the structural differences, the advantages, the potential problems and the possible solutions of some local biofuel initiatives in North-Western Europe. [less ▲]Detailed reference viewed: 26 (8 ULiège) Transitioning from conventional batch to microfluidic processes for the efficient singlet oxygen photooxygenation of methionineMendoza Gallego, Carlos ; Emmanuel, Noémie ; Pàez Martinez, Carlos et alin Journal of Photochemistry and Photobiology A : Chemistry (in press)Singlet oxygen-based photocatalytic oxygenation reactions have emerged as an efficient technology to synthesize value-added organic molecules. Among organic substrates, bio-sourced molecules such as ... [more ▼]Singlet oxygen-based photocatalytic oxygenation reactions have emerged as an efficient technology to synthesize value-added organic molecules. Among organic substrates, bio-sourced molecules such as aminoacids or terpenes have a promising forecast as synthetic building blocks. A pseudo first-order kinetic study for the photocatalytic oxygenation of natural amino acid (L)-methionine was carried out in a macroscopic batch reactor. Various parameters were studied, including the effect of the photosensitizer (Rose Bengal, RB) concentration, the intensity of the light and the O2 flow in terms of apparent kinetic constants and space-time yields. The identification of important limiting parameters as pressure, gas flow or light efficiency during the photocatalytic oxygenation of methionine allowed its transition from macroscopic batch reactor to continuous-flow microreactor. [less ▲]Detailed reference viewed: 32 (7 ULiège) Fib3-3 as a biomarker for osteoarthritis in a rat model with metabolic dysregulationde Visser, Huub; Sanchez, Christelle ; Mastbergen, Simon et alin CARTILAGE (in press)Detailed reference viewed: 10 (0 ULiège) Characterization of fructans and dietary fibre profiles in raw and steamed vegetablesKalala Bolokango, Gaetan ; Kambashi Mutiaka, Bienvenu; Everaert, Nadia et alin International Journal of Food Sciences & Nutrition (in press)Dietary fiber (DF) has many positive effects on human health associated with its functionality in the gastrointestinal tract. These benefits vary according to the type of DF. Vegetables can be a natural ... [more ▼]Dietary fiber (DF) has many positive effects on human health associated with its functionality in the gastrointestinal tract. These benefits vary according to the type of DF. Vegetables can be a natural source of DF in the diet. However, to provide adequate nutritional advice, the content and profile of their various DF types must be characterized. This study aimed to determine the DF profile of 29 vegetables cultivated in Wallonia (Belgium) and the impact of steaming on these profiles. Using a combination of enzymatic, gravimetric and chromatographic methods, fructans, total dietary fiber (TDF), low- and high-molecular-weight soluble dietary fiber (SDF), and insoluble dietary fiber (IDF) were analyzed. Results show that the DF content varies considerably among the 29 investigated vegetable varieties and species, but the influence of steaming is limited to a shift from IDF to high-molecular-weight SDF for 18 of the 29 tested vegetables, while fructans are preserved with not actual reduction in the DP. [less ▲]Detailed reference viewed: 23 (1 ULiège) Suivre ou guider son public ? Le rapport aux lecteurs dans le Journal historique et littéraire de l’antiphilosophe François-Xavier de FellerTeicher, Elie in Revue Belge de Philologie et d'Histoire (in press), 95In the eighteenth century, literary journals have set a specific relationship with their readers. By publishing letters from the public and by answering to their demands (or not), the journalists have ... [more ▼]In the eighteenth century, literary journals have set a specific relationship with their readers. By publishing letters from the public and by answering to their demands (or not), the journalists have established a readers’ community that share a common cultural universe. This article aims at analyzing the relationship between the antiphilosophe François-Xavier de Feller and the readership of his Journal historique et littéraire. The journalist, who wishes to fight against the philosophes and to spread his own radical ideas above all, has however taken his public’s capacity of reaction into account. This article will question the mechanisms of this relationship by considering the letters from the public to the editor but also Feller’s own addresses to his readership published in the journal. Even if he refuses the idea that every man is able to use his own critical reason, the journalist has been influenced by his readership but, more importantly, he has maintained in his public a new form of criticism, radically opposed to the ideas of Enlightenment. [less ▲]Detailed reference viewed: 18 (1 ULiège) Les prestataires belges et suisses à l’épreuve de l’accompagnement des demandeurs d’emploi. Prédominance des jeux d’acteurs ou du cadre de collaboration ?Remy, Céline in Revue Internationale des Sciences Administratives (in press), 86(1), Les services publics de l’emploi ont délégué leur mission d’accompagnement des chômeurs aux prestataires de service. L’article s’intéresse au déroulement des collaborations entre services publics et ... [more ▼]Les services publics de l’emploi ont délégué leur mission d’accompagnement des chômeurs aux prestataires de service. L’article s’intéresse au déroulement des collaborations entre services publics et opérateurs privés d’emploi, en Belgique et en Suisse. Ces partenariats sont confrontés à deux épreuves qui sont le recrutement des candidats dans les projets de formation et la mesure des résultats de la prestation. Notre hypothèse initiale soutient l’idée que les jeux d’acteurs ont plus d’effet dans la résolution des situations critiques que le cadre de collaboration. La comparaison internationale nous permet de faire varier les modalités de création des partenariats et de montrer une articulation particulière entre jeux d’acteurs et cadre de collaboration. [less ▲]Detailed reference viewed: 26 (0 ULiège) Working memory for serial order and numerical cognition: What kind of association?Majerus, Steve ; Attout, Lucie in Henik, Avishai; Fias, Wim (Eds.) Heterogeneity of Function in Numerical Cognition (in press)Detailed reference viewed: 15 (1 ULiège) Beliefs in the population about cracking sounds produced during spinal manipulationDemoulin, Christophe ; Baeri, Damien; TOUSSAINT, Geoffrey et alin Joint Bone Spine (in press)Objectives: To examine beliefs about cracking sounds heard during highvelocity lowamplitude (HVLA) thrust spinal manipulation in individuals with and without personal experience of this technique. Methods ... [more ▼]Objectives: To examine beliefs about cracking sounds heard during highvelocity lowamplitude (HVLA) thrust spinal manipulation in individuals with and without personal experience of this technique. Methods: We included 100 individuals. Among them, 60 had no history of spinal manipulation, including 40whowereasymptomatic with or without a past history of spinal pain and 20whohad nonspecific spinal pain. The remaining 40 patients had a history of spinal manipulation;amongthem, 20 were asymptomatic and 20 had spinal pain. Participants attended a oneonone interview during which they completed a questionnaire about their history of spinal manipulation and their beliefs regarding sounds heard during spinal manipulation. Results: Mean age was 43.5±15.4 years. The sounds were ascribed to vertebral repositioning by 49% of participants and to friction between two vertebras by 23% of participants; only 9% of participants correctly ascribed the sound to the release of gas. The sound was mistakenly considered to indicate successful spinal manipulation by 40% of participants. No differences in beliefs were found between the groups with and without a history of spinal manipulation. Conclusions: Certain beliefs have documented adverse effects. This study showed a high prevalence of unfounded beliefs regarding spinal manipulation. These beliefs deserve greater attention from healthcare providers, particularly those who practice spinal manipulation. [less ▲]Detailed reference viewed: 25 (3 ULiège) Experts/non-experts. (Re)construire l’histoire des musiques populaires — Spec. issue of Volume! La revue des musique spopulaires.Levaux, Christophe Book published by Éditions Mélanie Seteun (in press)Detailed reference viewed: 3 (0 ULiège) Sensitive parameters in local agricultural life cycle assessments: the illustrative case of cereal production in Wallonia, Belgiumvan Stappen, Florence; Mathot, Michael; Loriers, Astrid et alin International Journal of Life Cycle Assessment (in press)Detailed reference viewed: 13 (0 ULiège) Effects of dietary black soldier fly larvae on performance of broilers mediated or not through changes in microbiotaMoula, Nassim ; Hornick, Jean-Luc ; Cabaraux, Jean-François et alin Journal of Insects as Food and Feed (in press)Detailed reference viewed: 93 (4 ULiège) Cultural, ethnic and political dimensions of the transformation of Mediterraneaness in Neapolitan contemporary music.Mazzola, Alessandro in Ethnic and Racial Studies (in press)In the Italian public debate, the Mediterranean has represented a discursive formation employed to describe the South as the Other of the North. It has been associated with ‘soft’ representations of ... [more ▼]In the Italian public debate, the Mediterranean has represented a discursive formation employed to describe the South as the Other of the North. It has been associated with ‘soft’ representations of cultural order and ‘hard’ discourses of civicness that identify the South along a specific set of sociocultural elements, moral norms and forms of civic organization. The Italian city of Naples holds much empirical evidence as an originator of such Mediterranean discursive formation. Since the early 1990s, singer-songwriters and musicians have attempted to transform this discursive formation and to popularize a positive idea of Mediterraneaness on a cultural, ethnic and political dimension. The aim of this article is to explore this process through musical and ethnographic sources. Neapolitan artists Eugenio Bennato, Almamegretta and 99 Posse provide the case studies. [less ▲]Detailed reference viewed: 15 (0 ULiège) Agent-based Identification and Control of Voltage Emergency SituationsRobitzky, Lena; Weckesser, Tilman; Häger, Ulf et alin IET Generation, Transmission & Distribution (in press)Changing dynamics of power systems caused by the migration from conventional to distributed energy sources increase the risk of blackouts due to voltage instability, especially in case of unforeseen ... [more ▼]Changing dynamics of power systems caused by the migration from conventional to distributed energy sources increase the risk of blackouts due to voltage instability, especially in case of unforeseen network conditions (e.g., (N-k)-cases). To enable a both secure and efficient power supply, novel monitoring and emergency control systems for the identification of voltage emergency situations as well as the execution of control actions are required that react reliably in due time and adaptively in case of changing network situations. This paper presents a distributed agent-based approach to counteract voltage instability that is based solely on local measurements and limited inter-agent communication. Distributed agents located at substations in the (sub-)transmission network monitor distribution and transmission voltages as well as load tap changer positions and are able to autonomously curtail load in case system stability is endangered. The applicability of the approach is demonstrated in a co-simulation environment interfacing the multi-agent system with a dynamic power system simulation. The presented approach allows for an early detection of voltage instability as well as a coordinated execution of available control actions. [less ▲]Detailed reference viewed: 41 (3 ULiège) BelgiumMazzola, Alessandro in Wilson, Thomas (Ed.) Europe: An Encyclopedia of Culture and Society (in press)Detailed reference viewed: 13 (0 ULiège)