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Peer Reviewed
See detailGateways and Walls, or the Power and Pitfalls of Postcolonial Metaphors
Tunca, Daria ULg; Wilson, Janet

in Wilson, Janet; Tunca, Daria (Eds.) Postcolonial Gateways and Walls: Under Construction (in press)

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See detailGathering and Handling of Granular Materials under Microgravity Conditions
Opsomer, Eric ULg

Doctoral thesis (2014)

When a granular material is driven in microgravity environment, one can assist to the formation of dense and slow regions in the system. Indeed, given the dissipative character of the collisions in the ... [more ▼]

When a granular material is driven in microgravity environment, one can assist to the formation of dense and slow regions in the system. Indeed, given the dissipative character of the collisions in the media, energy is lost at each particle interaction and the grains begin to clump locally. The phenomenon has been observed for the first time in the late nineties during sounding rocket experimentation by Falcon and his coworkers and has attracted the interest of many scientists since then. However, precise laws describing the formation and the dynamics of such clusters are still lacking. In order to allow an intensive study of the phenomenon, the European Space Agency set up the SpaceGrains project. Small bronze spheres are enclosed in a rectangular cell and vertically driven by to pistons oscillating in phase opposition. Our work consists in the preparation of the SpaceGrains experiment via molecular dynamics simulations and the elaboration of models predicting the behaviour of the system. Before we started our study concerning SpaceGrains, we reproduced and extended Falcon’s sounding rocket experiments. We showed that, in addition to the granular gas and the cluster, another dynamical regime can be observed in the system. Indeed, for higher filling fractions, the entire granular media behaves like one single completely dissipative particle called the bouncing aggregate. Bouncing modes are observed and can be explained considering the bouncing ball paradigm. Moreover, we highlighted the role of the packing fraction φ as well as the size of the particles R on the different observed dynamics. Within the frame of the SpaceGrains device, we studied the impact of all tunable parameters of the experiment on the dynamics of the system. Thanks to an appropriate scaling all transition points that we obtained by varying the driving amplitude A, the packing fraction and the dimen- sions of the cell L fall along a same theoretical curve. The latter is explained regarding the energy transfer from the piston towards the center of the cell. Once the clustering was controlled, we investigated the handling of the agglomerate. By compartmentalizing the container, local trapping can be achieved and a granular pendant of Maxwell’s demon can be observed in microgravity. Based on the measured particle flux between the compartments, we realized a theoretical model predicting the asymptotic steady state of the system depending on the total number N of particles. In a clustered system, we investigated the impact of asymmetrical driving on the system’s dy- namics. We showed that the mean position of the cluster can be fully controlled via the amplitude ratio a. Moreover, the natural fluctuations of the agglomerate around its equilibrium position are dictated by the driving frequency f and the mass of the cluster. Finally, we realized simulations of driven bi-disperse gases and investigated the segregation phenomena in the system. We showed that clustering and segregation are strongly linked and that the size and the mass of the particles impact the segregation dynamics in different ways. [less ▲]

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See detailLa gauche a-t-elle peur de la sécurité ?
Verjans, Pierre ULg

in Politique : Revue de Débats (2002)

La genèse des partis de gauche ne les pousse pas à valoriser la défense des grands propriétaires mais la responsabilité politique et l'embourgeoisement de la classe ouvrière les pousse à défendre le ... [more ▼]

La genèse des partis de gauche ne les pousse pas à valoriser la défense des grands propriétaires mais la responsabilité politique et l'embourgeoisement de la classe ouvrière les pousse à défendre le patrimoine des petits propriétaires, d'où une tension interne difficile à gérer. [less ▲]

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See detailGauche de la gauche
Durand, Pascal ULg

in Durand, Pascal (Ed.) Les Nouveaux Mots du Pouvoir. Abécédaire critique (2007)

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See detailGauche, droite et engagement public
Italiano, Patrick ULg; Deflandre, Dimitri; Jacquemain, Marc ULg

Conference (2005, April)

The paper examines poll survey data to see if the way people invest in public envolvement is different between thos consider themselves to the left and those who consider themselves to the right. It ... [more ▼]

The paper examines poll survey data to see if the way people invest in public envolvement is different between thos consider themselves to the left and those who consider themselves to the right. It appears that the difference beween rightl and left is small and that the main difference is bewteen those who choose a position and those who refuse to choose or do not answer. Rather interestingly, people that see themselves at the center ressembles strongly to non respondants, as if the center was a "refuge value". [less ▲]

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See detailGaucher Disease and Bone Manifestations
Marcucci, Gemma; Zimran, Ari; Bembi, Bruno et al

in Calcified tissue international (2014), 95(6), 477-494

Gaucher disease is a relatively rare metabolic disease caused by the inherited deficiency of the lysosomal enzyme glucocerebrosidase. Gaucher disease affects multiple organs, among which is the skeleton ... [more ▼]

Gaucher disease is a relatively rare metabolic disease caused by the inherited deficiency of the lysosomal enzyme glucocerebrosidase. Gaucher disease affects multiple organs, among which is the skeleton. Bone involvement occurs frequently in Gaucher disease, and is one of its most debilitating features, reducing the quality of life of patients. Bone status is an important consideration for treatment to ameliorate symptoms and reduce the risk of irreversible complications. We have conducted a systematic review of all the various aspects of Gaucher disease, focusing on different skeletal manifestations, pathophysiology of bone alterations, clinical symptoms, and current diagnostic and therapeutic approaches. [less ▲]

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See detailLes gauches en Europe
Verjans, Pierre ULg

Conference given outside the academic context (2012)

La définition de la gauche, d'après Norberto Bobbio, doit se construire autour du concept d'égalité. L'égalité peut être déclinée dans divers domaines avec des exigences variables. Au niveau européen, les ... [more ▼]

La définition de la gauche, d'après Norberto Bobbio, doit se construire autour du concept d'égalité. L'égalité peut être déclinée dans divers domaines avec des exigences variables. Au niveau européen, les divers partis de gauche ne font pas la même analyse du Traité sur la Stabilité, la Coordination et la Gouvernance. [less ▲]

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See detailGAUFRE: a tool for an automated determination of atmospheric parameters from spectroscopy
Valentini, Marica ULg; Morel, Thierry ULg; Miglio, Andrea et al

in 40th Liege International Astrophysical Colloquium 'Ageing low-mass stars: from red giants to white dwarfs' (2013, January 01)

We present an automated tool for measuring atmospheric parameters (T_eff, log(g), [Fe/H]) for F-G-K dwarf and giant stars. The tool, called GAUFRE, is written in C++ and composed of several routines ... [more ▼]

We present an automated tool for measuring atmospheric parameters (T_eff, log(g), [Fe/H]) for F-G-K dwarf and giant stars. The tool, called GAUFRE, is written in C++ and composed of several routines: GAUFRE-RV measures radial velocity from spectra via cross-correlation against a synthetic template, GAUFRE-EW measures atmospheric parameters through the classic line-by-line technique and GAUFRE-CHI2 performs a chi^2 fitting to a library of synthetic spectra. A set of F-G-K stars extensively studied in the literature were used as a benchmark for the program: their high signal-to-noise and high resolution spectra were analysed by using GAUFRE and results were compared with those present in literature. The tool is also implemented in order to perform the spectral analysis after fixing the surface gravity (log(g)) to the accurate value provided by asteroseismology. A set of CoRoT stars, belonging to LRc01 and LRa01 fields was used for first testing the performances and the behaviour of the program when using the seismic log(g). [less ▲]

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Peer Reviewed
See detailGauge-covariant canonical formalism revisited with application to the proton spin decomposition
Lorce, Cédric ULg

in Physical Review. D, Particles, Fields, Gravitation, and Cosmology (2013), D88

We revisit the gauge-covariant canonical formalism by separating explicitly physical and gauge degrees of freedom. We show in particular that the gauge-invariant linear and angular momentum operators ... [more ▼]

We revisit the gauge-covariant canonical formalism by separating explicitly physical and gauge degrees of freedom. We show in particular that the gauge-invariant linear and angular momentum operators proposed by Chen et al. can consistently be derived from the standard procedure based on Noether’s theorem. Finally, we demonstrate that this approach is essentially equivalent to the gauge-invariant canonical formalism based on the concept of Dirac variables. Because of many similarities with the background field method, the formalism developed here should also be relevant to general relativity and any metric theories. [less ▲]

Detailed reference viewed: 12 (2 ULg)
See detailGauguin et la modernité
Duchesne, Jean-Patrick ULg; Desaive, Pierre-Yves; Henrion, Pierre

in Catalogue de l'exposition Gauguin, Les XX et la Libre Esthétique (1995)

Detailed reference viewed: 31 (3 ULg)
See detailGaussian beams and Fourier Optics
Stijns, Erik; Roose, Stéphane ULg

in Akos, G.; Lippényi, T.; Lupkovics, G. (Eds.) et al Proceedings of the 16th Congress of the international commission for Optics: Optics as a Key to High Technology ICO-16 (1993, July 26)

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See detailA Gaussian mixture approach to model stochastic processes in power systems
Gemine, Quentin ULg; Cornélusse, Bertrand ULg; Glavic, Mevludin ULg et al

in Proceedings of the 19th Power Systems Computation Conference (PSCC'16) (2016, June)

Probabilistic methods are emerging for operating electrical networks, driven by the integration of renewable generation. We present an algorithm that models a stochastic process as a Markov process using ... [more ▼]

Probabilistic methods are emerging for operating electrical networks, driven by the integration of renewable generation. We present an algorithm that models a stochastic process as a Markov process using a multivariate Gaussian Mixture Model, as well as a model selection technique to search for the adequate Markov order and number of components. The main motivation is to sample future trajectories of these processes from their last available observations (i.e. measurements). An accurate model that can generate these synthetic trajectories is critical for applications such as security analysis or decision making based on lookahead models. The proposed approach is evaluated in a lookahead security analysis framework, i.e. by estimating the probability of future system states to respect operational constraints. The evaluation is performed using a 33-bus distribution test system, for power consumption and wind speed processes. Empirical results show that the GMM approach slightly outperforms an ARMA approach. [less ▲]

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Peer Reviewed
See detailGautier rapporteur de la poésie
Durand, Pascal ULg

in Bulletin de la Société Théophile Gautier (2011), 33

Detailed reference viewed: 77 (53 ULg)
See detailGawrah Tepe
Van der Stede, Véronique ULg; Forest, Jean-Daniel

in Anastasio, Stefano; Lebeau, Marc; Sauvage, Martin (Eds.) Atlas of Preclassical Upper Mesopotamia (2004)

Detailed reference viewed: 13 (0 ULg)
See detailGAY ADOPTIVE FAMILIES: WHAT IS THE IMPACT OF THE LEGAL STATUS?A COMPARISON BETWEEN BELGIUM AND FRANCE
Messina, Roberta ULg; D'Amore, Salvatore ULg

Scientific conference (2016, March)

Despite the numerous studies on gay families, the current literature that has focused specifically on gay adoptive parent families remains rather limited. In Europe the laws on adoption by same-sex ... [more ▼]

Despite the numerous studies on gay families, the current literature that has focused specifically on gay adoptive parent families remains rather limited. In Europe the laws on adoption by same-sex couples change radically from a country to another one. That’s why the experience of these families can be very different according to their country of residence. What are the main stressors that gay adoptive parents have to face? What are the strategies of coping built by these families? This exploratory research examines the stressors and the coping strategies of 18 gay adoptive families (12 from France, 6 from Belgium) with children aged from 3 to 10. Participants were recruited via adoption agencies. Belgian parents adopted their children through national full joint adoption. Conversely, French participants became parents through international adoption as “single parents” (even if they were in a relationship, just one of the partners was legally involved in the adoption). Semi-structured interviews were conducted with parents. Using grounded theory methods, analyses revealed that parents face different stressors such as the homophobia by social workers, the lack of support by families of origin and social context, the afraid of not being considered parents "like the others" and the worry about discrimination of their children. In the French sample, these stressors were increased by a long procedure in which the “legal parent” had to lie about his sexual orientation and the other parent had to hide himself in order to assure the success of the adoption procedure. This can have a negative impact on the couple's relationship, on the feeling of legitimacy about parental role, in the relationship with the child and with the extended family. To cope with these stressors, many adaptive strategies have proved to be useful: don’t hide the sexual orientation to the children, join adoption associations, share experiences with other gay parents, take care of the couple relationship, being in touch with accepting people and protect themselves from discriminatory people. This comparison between Belgian and French families’ experience allows us to understand the impact of the legal status on the life of gay parents and their children. [less ▲]

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See detailGay adoptive families: between stressors and losses. 2 contrasted cases
Messina, Roberta ULg; D'Amore, Salvatore ULg

Conference (2016, September)

Gay adoptive families are more and more present in the European context (currently the full joint adoption by same sex couples is granted in 9 European countries and 4 countries permit the step-child ... [more ▼]

Gay adoptive families are more and more present in the European context (currently the full joint adoption by same sex couples is granted in 9 European countries and 4 countries permit the step-child adoption). Despite the numerous studies on lesbian and gay parent- headed families, the current literature that has focused specifically on gay adoptive parent families remains rather limited. This research has the aim of increase the scientific knowledge on this new family form with the purpose to shed light on typical stressors experienced by parents and by children. The specificity of these families consists, among others, to be at the crossroads of two levels of complexity: being adoptive families and being LG families. Like all LG families, gay adoptive families have to face different stressors such as the lack of support by families of origin and social context, the need to hide their parenting project, the fear to not be considered parents "like the others" and the worry that their children are discriminated because of parents’ homosexuality. In addition to these stressors linked to the family structure, there is the challenge to adopt a child already marked by difficult life experiences and abandonment. The specificity of these families is the product of the difficulties encountered from the couples to became parents and of the experience of loss experienced by the child. The result of this whole meeting, is often found in parents’ strategies to face stressors and in the weight that the loss takes on for the child and in the relational dynamics of the family. Through two contrasting cases we will reflect on the possible adaptive strategies of parents and on the importance of integrating the child history in a new family story in which past, present and future come together and don’t know fractures. [less ▲]

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See detailGay and Lesbian Families Well-Beeing: Respectively Ten and Seven years after the legalization of Same-sex Marriage and Same-sex Adoption in Belgium, understanding heterosexual adults' attitudes.
Scali, Thérèse ULg; D'Amore, Salvatore ULg; Green, Robert-Jay

Conference (2014, July)

Belgium is one of the first European country to legalize marriage and adoption for same-sex couples (respectively in 2003 and 2006) and to state anti-discrimination laws (2008). Despite the legalization ... [more ▼]

Belgium is one of the first European country to legalize marriage and adoption for same-sex couples (respectively in 2003 and 2006) and to state anti-discrimination laws (2008). Despite the legalization, what can we say about adults’ attitudes? This study is part of an international project, and aims at studying the attitudes towards different kind of same-sex constellations – single gays and lesbians, couples, and families – and at examining the correlates to those attitudes. Attitudes were assessed through self-report questionnaires in a cohort of 366 heterosexual participants resident in Belgium, 72% females and 28% males aged from 26 to 40 (age class corresponding to transition lifecycle and parenting choices). Participants were asked to answer socio-demographic questions and to self-report their contact with homosexual people (frequency and satisfaction). Then different scales assessed their attitudes toward homosexuality (General Attitudes Toward Homosexuality, Da Costa, 2011; ATLG, Herek), same-sex marriage (Katuzny Scale on Same-Sex Marriage, 2012) and different types of same¬-sex parenting – adoption, alternative insemination, in vitro, ovocyte donation (D’Amore & Green Homoparentality Scale, 2012). It is hypothesized that correlates to positive attitudes will be associated with female gender, lower religiosity, non-protestant religions, liberal political ideology, and higher education and socioeconomic status. This presentation contributes to a better understanding of Belgian’s attitudes toward same-sex couples and same-sex families, by measuring the predictive variables of positive and negative attitudes. [less ▲]

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See detailTHE GAY FAMILY "God will take care of you" : notes de pochette + photo ( Gospel Friend CD PN-1507)
Sacré, Robert ULg

in Sacré, Robert (Ed.) THE GAY FAMILY Notes de pochette CD (2012)

The Gay Family was one of the most outstanding black gospel groups to emerge in Chicago in the '50s and '6os ; it was also one of the most underrated groups. Bad luck, jealousy, ... resulted in a lot of ... [more ▼]

The Gay Family was one of the most outstanding black gospel groups to emerge in Chicago in the '50s and '6os ; it was also one of the most underrated groups. Bad luck, jealousy, ... resulted in a lot of autoproduced records with poor distribution; very few recordings were available untill this massive reissue : 27 tracks ( 1948- 1977) [less ▲]

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See detailGaydar : Les homosexuels ont-ils une aptitude à se reconnaître entre eux? Influence des indices visuels statiques, des stéréotypes et du niveau d'homophobie
Piazza, Aurélie ULg

Master's dissertation (2007)

Au travers de ce mémoire, nous avons tenté de voir si les homosexuels arrivaient à se reconnaître entre eux, sur base d'indices visuels statiques, mieux que ne le feraient les hétérosexuels. Nous avons ... [more ▼]

Au travers de ce mémoire, nous avons tenté de voir si les homosexuels arrivaient à se reconnaître entre eux, sur base d'indices visuels statiques, mieux que ne le feraient les hétérosexuels. Nous avons également étudié les caractéristiques faciales utilisées par les juges pour dire d'une personne qu'elle est homosexuelle et avons étudié l'influence des stéréotypes de masculinité/féminité et d'attractivité dans l'émission d'un jugement d'orientation sexuelle. Enfin, nous avons essayé de savoir si le niveau d'homophobie avait un impact sur le taux de reconnaissance de celle-ci. [less ▲]

Detailed reference viewed: 73 (13 ULg)