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See detailVIEW-INVARIANT ACTION RECOGNITION FROM RGB DATA VIA 3D POSE ESTIMATION
Baptista, Renato UL; Ghorbel, Enjie UL; Papadopoulos, Konstantinos UL et al

in IEEE International Conference on Acoustics, Speech and Signal Processing, Brighton, UK, 12–17 May 2019 (2019, May)

In this paper, we propose a novel view-invariant action recognition method using a single monocular RGB camera. View-invariance remains a very challenging topic in 2D action recognition due to the lack of ... [more ▼]

In this paper, we propose a novel view-invariant action recognition method using a single monocular RGB camera. View-invariance remains a very challenging topic in 2D action recognition due to the lack of 3D information in RGB images. Most successful approaches make use of the concept of knowledge transfer by projecting 3D synthetic data to multiple viewpoints. Instead of relying on knowledge transfer, we propose to augment the RGB data by a third dimension by means of 3D skeleton estimation from 2D images using a CNN-based pose estimator. In order to ensure view-invariance, a pre-processing for alignment is applied followed by data expansion as a way for denoising. Finally, a Long-Short Term Memory (LSTM) architecture is used to model the temporal dependency between skeletons. The proposed network is trained to directly recognize actions from aligned 3D skeletons. The experiments performed on the challenging Northwestern-UCLA dataset show the superiority of our approach as compared to state-of-the-art ones. [less ▲]

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See detailA View-invariant Framework for Fast Skeleton-based Action Recognition Using a Single RGB Camera
Ghorbel, Enjie UL; Papadopoulos, Konstantinos UL; Baptista, Renato UL et al

in 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, Prague, 25-27 February 2018 (2019, February)

View-invariant action recognition using a single RGB camera represents a very challenging topic due to the lack of 3D information in RGB images. Lately, the recent advances in deep learning made it ... [more ▼]

View-invariant action recognition using a single RGB camera represents a very challenging topic due to the lack of 3D information in RGB images. Lately, the recent advances in deep learning made it possible to extract a 3D skeleton from a single RGB image. Taking advantage of this impressive progress, we propose a simple framework for fast and view-invariant action recognition using a single RGB camera. The proposed pipeline can be seen as the association of two key steps. The first step is the estimation of a 3D skeleton from a single RGB image using a CNN-based pose estimator such as VNect. The second one aims at computing view-invariant skeleton-based features based on the estimated 3D skeletons. Experiments are conducted on two well-known benchmarks, namely, IXMAS and Northwestern-UCLA datasets. The obtained results prove the validity of our concept, which suggests a new way to address the challenge of RGB-based view-invariant action recognition. [less ▲]

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See detailViewing Time Effects Revisited: Prolonged Response Latencies for Sexually Attractive Targets Under Restricted Task Conditions
Imhoff, Roland; Schmidt, Alexander F. UL; Nordsiek, Uta et al

in ARCHIVES OF SEXUAL BEHAVIOR (2010), 39(6), 1275-1288

Sexually attractive stimuli are watched longer than unattractive stimuli. The processes underlying this robust and reliable viewing time effect are presently not well understood. In the present research ... [more ▼]

Sexually attractive stimuli are watched longer than unattractive stimuli. The processes underlying this robust and reliable viewing time effect are presently not well understood. In the present research comprising four experiments (total N = 250), four classes of potential explanations are proposed and the derived implications were experimentally tested. Contrary to explanations based on either deliberate delay or attentional adhesion to sexually attractive stimuli, prolonged response latencies were also found under restricted task conditions. Sexually preferred targets elicited longer response latencies in a self-paced evaluation task when stimulus pictures were presented for 750 ms (Experiment 1) or for 500 ms and followed by a pattern mask (Experiment 2). Prolonged latencies for sexually preferred targets were also observed when sexual attractiveness was rated in a speeded binary decision task with a response window of 1000 ms (Experiment 3). Eventually, it was shown that the response latency effect in the speeded binary choice task was still preserved when only the heads of target individuals were presented instead of the bodies (Experiment 4). Mate identification and schematic processes are discussed as the remaining plausible mechanisms for prolonged response latencies for sexually attractive targets under restricted conditions. [less ▲]

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See detailViewpoint: Atomic-Scale Design Protocols toward Energy, Electronic, Catalysis, and Sensing Applications
Belviso, Florian; Claerbout, Victor E. P.; Comas-Vives, Aleix et al

in INORGANIC CHEMISTRY (2019), 58(22), 14939-14980

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See detailThe views of key stakeholders on an evolving food risk governance framework: Results from a Delphi study
Wentholt, M.T.A.; Rowe, G.; König, Ariane UL et al

in Food Policy (2009), 34(6), 539-548

Evidence of a decline in public trust associated with food risk governance over recent years has called into question the appropriateness of the current dominant risk analysis framework. Within the EU ... [more ▼]

Evidence of a decline in public trust associated with food risk governance over recent years has called into question the appropriateness of the current dominant risk analysis framework. Within the EU-funded SAFE FOODS project a novel risk analysis framework has been developed that attempts to address potential shortcomings by increasing stakeholder (including consumer) input, improving transparency, and formally incorporating benefit and non-health aspects into the analysis. To assess the viability of this novel framework, the views of food risk experts from the EU and beyond were sought using a distributed online questionnaire process called Delphi. In this paper the main results of this survey are described, revealing varying levels of support for the key innovations of the novel framework. Implications of our results for the new and old frameworks, for the future of risk analysis, and for the policy community more widely, are discussed. [less ▲]

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See detailViews on Ageing - A Lifespan Approach
Kornadt, Anna Elena UL; Kessler, Eva-Marie; Wurm, Susanne et al

in European Journal of Ageing (2020), 17

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See detailViews on Aging and Well-Being in the Covid Crisis – A Longitudinal Study in Luxembourg
Kornadt, Anna Elena UL; Hoffmann, Martine; Murdock, Elke UL et al

in Innovation in Aging (2020), 4(Supplement_1), 961-961

During the Covid-Crisis, stereotypes of older adults as helpless and vulnerable were spread, and intergenerational conflict was stirred more or less openly. We thus focused on perceived ageism during the ... [more ▼]

During the Covid-Crisis, stereotypes of older adults as helpless and vulnerable were spread, and intergenerational conflict was stirred more or less openly. We thus focused on perceived ageism during the crisis and its effects on well-being and health of older adults. Since views on aging are multifaceted and can be both, risk and resource for individual development, we assessed people’s self-perceptions of aging (SPA) as social loss, continued growth and physical decline and subjective age (SA). We hypothesized that people with SPA of social loss and physical decline would be more susceptible to negative effects of perceived ageism, whereas those with SPA of continued growth and younger SA would be less affected. NT1 = 611 community-dwelling adults aged 60 – 98 (Mage = 69.92 years) were recruited in June 2020 online and via phone in Luxembourg. In September 2020, participants will be contacted again for a follow-up. Analyses with cross-sectional data show that participants who felt more discriminated reported lower life satisfaction after the onset of the crisis (r = -.35) and worse subjective health (r = -.14). SPA of social loss and higher SA increased the negative effect of ageism on well-being (beta = -.57) and subjective health (beta = -.53), respectively. Our results point to mid- and long-term consequences of age discriminatory and stereotype-based crisis communication for the well-being of older adults and the importance of individual SPA in critical situations. [less ▲]

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See detailViews on Aging – Current Trends and Future Directions for Cross- Cultural Research
Kornadt, Anna Elena UL; De Paula Couto, Clara M. P.; Rothermund, Klaus

in Online Readings in Psychology and Culture (2022), 6(2),

The investigation of what enables societies and individuals to age well remains one of the greatest challenges of our time. Views on aging are a decisive factor in this process, and thus, improving their ... [more ▼]

The investigation of what enables societies and individuals to age well remains one of the greatest challenges of our time. Views on aging are a decisive factor in this process, and thus, improving their understanding through cross-cultural research is of utmost importance. In the current review, we address the role of socio-ecological variables and cultural values and beliefs when investigating country differences in what people think about older persons and getting old themselves. Several complexities are introduced in terms of a differentiated conceptualization of views on aging that takes life domains and normative prescriptions into account, and also in terms of a differentiated and extended view on the factors through which societal and cultural aspects and views on aging mutually influence each other. We propose that an encompassing, lifespan framework on views on aging enhances our understanding of aging well in different cultural and societal contexts. [less ▲]

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See detailViews on aging: Domain-specific approaches and implications for developmental regulation
Kornadt, Anna Elena UL; Rothermund, Klaus

in Annual Review of Gerontology and Geriatrics (2015)

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See detailVIEWS ON AGING: NEW PERSPECTIVES FOR THEORY AND RESEARCH
Klusmann, Verena; Kornadt, Anna Elena UL

in Innovation in Aging (2019), 3(Supplement_1), 786-786

Over the past 20 years, research on views on aging has substantiated their importance for successful development and sustained quality of life over the full length of the life span. However, a deep ... [more ▼]

Over the past 20 years, research on views on aging has substantiated their importance for successful development and sustained quality of life over the full length of the life span. However, a deep understanding of the origins of views on aging and the underlying processes of their lifespan development and manifestation is lacking. Since 2017, the scientific network “Images of Aging” funded by the German Research Foundation (http://www.health.uni-konstanz.de/images-of-aging) assembles national and international renowned experts in the field. The network engages in empirical clarifications on both the distinctness and validity of the construct (contribution of Klusmann et al.) as well as in critically reviewing terminology and measures of views on aging (contribution of Notthoff et al.). The network aims to help clarifying the dynamic interplay of determinants and outcomes in the context of health (contribution of Wolff et al.) as well as disentangling intra- and intergenerational stereotypic perceptions (contribution of Kornadt et al.). Both of these are understudied issues with highly practical implications for two of the largest demographic challenges: shaping the coexistence of generations as well as providing adequate health care supply. Integrating both pertinent theoretical approaches and empirical findings the network regards views on aging under a lifespan perspective. Recently, it suggested three core principles of views on aging regarding lifelong bio-psycho-social development, their multidimensional nature, and their impact across life. These considerations provide a background for an integrative discussion of the symposium’s contributions. [less ▲]

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See detailLa vigueur des garanties et sûretés personnelles dans les procédures collectives
Prüm, André UL

in Revue de Droit de l'ULB (2001), 24

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See detailLa vigueur des garanties et sûretés personnelles dans les procédures collectives
Prüm, André UL

in Vers l'harmonisation en Europe du droit de l'insolvabilité et des garanties, 24/2001-2 (2001)

Detailed reference viewed: 69 (1 UL)
See detailVillanova Truschedu
Camarda, Sandra UL

in Brigaglia, Manlio; Tola, Salvatore (Eds.) Dizionario storico-geografico dei Comuni della Sardegna Vol. 5 (2009)

Detailed reference viewed: 60 (0 UL)
See detailVillaurbana
Camarda, Sandra UL

in Brigaglia, Manlio; Tola, Salvatore (Eds.) Dizionario storico-geografico dei Comuni della Sardegna Vol. 5 (2009)

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See detailLa ville comme arrière-texte : de Hugo à Aragon
Roelens, Nathalie UL

in Approches interdisciplinaires de la lecture (2010), 5

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See detailLa Ville de Luxembourg et sa périphérie - Luxemburg-Stadt im Vergleich zum Umland und dem Großherzogtum
Heinz, Andreas UL; Peltier, François; Thill, Germaine et al

E-print/Working paper (2013)

95 058 personnes vivaient dans la capitale à la date du recensement (1er février 2011), soit 24.0% de plus qu’en 2001. Avec ce taux, la croissance démographique de la Ville de Luxembourg a dépassé celle ... [more ▼]

95 058 personnes vivaient dans la capitale à la date du recensement (1er février 2011), soit 24.0% de plus qu’en 2001. Avec ce taux, la croissance démographique de la Ville de Luxembourg a dépassé celle de sa périphérie, c’est-à-dire Luxembourg-Campagne1 (dont la population a augmenté de 17.0% de 2001 à 2011), mais aussi celle de l’ensemble du pays (+16.6%). Luxembourg-Ville et Luxembourg-Campagne représentaient ensemble 29.6% des habitants du pays en 2011, contre 28.4% en 2001. Seul un tiers des habitants de la capitale sont des Luxembourgeois (35.1%), suivis par les Français (14.3%) et les Portugais (14.1%). La sur-face moyenne des logements dans la Ville de Luxembourg est de 105.5 m² et se situe largement en-dessous de la surface moyenne des logements dans l’ensemble du pays (129.9 m²) et dans la périphérie de la Ville (144.8 m² à Luxembourg-Campagne). Cependant, la taille moyenne des ménages à Luxembourg-Ville (1.94 personnes par ménage) est également plus réduite que dans l’ensemble du pays (2.41) et à Luxembourg-Cam-pagne (2.47). Avec 26.4%, la part des habitants vivant seuls est près de deux fois plus élevée dans la capitale que dans le pays pris dans son en-semble (13.8%). 40.3% des habitants de la capitale vivent dans des ménages constitués par un couple avec enfant(s), alors que dans le pays le pourcen-tage correspondant atteint les 51.8%. Les habitants de la Ville de Luxembourg ont souvent des niveaux d‘éducation plus élevés que dans le reste du pays. La part des personnes ayant un diplôme de type « master » ou un doctorat (33.9%) est plus de deux fois plus élevé que dans le pays en général (14.8%). En revanche, les niveaux d’éducation faibles ou moyens sont moins fréquents dans la capitale que dans le reste du pays. [less ▲]

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See detailLa ville et ses prosopopées fabuleuses
Roelens, Nathalie UL

in The Imaginary : Word and Image/ L’imaginaire : texte et image, Word & Image (2015)

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See detailVille infectée, ville déshumanisée. Reconstructions littéraires françaises et francophones des espaces sociopolitiques, historiques et scientifiques de l'extrême contemporain
Freyermuth, Sylvie UL; Bonnot, Jean-François; Obergöker, Timo

Book published by PIE-Peter Lang (2014)

Le programme de recherche Reconstructions littéraires françaises et francophones des espaces sociopolitiques, historiques et scientifiques de l’extrême contemporain a réuni des chercheurs européens dont ... [more ▼]

Le programme de recherche Reconstructions littéraires françaises et francophones des espaces sociopolitiques, historiques et scientifiques de l’extrême contemporain a réuni des chercheurs européens dont les travaux, présentés ici, sont entrés en dialogue au sujet de la catégorie de l’espace, en étroite relation avec la géographie, l’histoire, les sciences sociales et politiques, et enfin les sciences cognitives et la cybernétique. L’espace est soumis aux tensions des difficiles premières années du XXIe siècle (guerres, peurs et fantasmes « terroristes », etc.), de surcroît marquées par une crise économico-financière sans précédent depuis 1929, de telle sorte que les groupes sociaux et les individus s’inscrivent dans des situations très nouvelles dans lesquelles se trouvent réactivés soupçons et défiances à l’égard des institutions politiques et de leurs administrations. Aucun domaine n’est épargné, qu’il s’agisse de l’éducation, de la recherche scientifique ou des activités de diffusion de l’information. Ce volume explore et analyse la création, essentiellement romanesque, de l’extrême contemporain, où l’espace s’impose avec force, comme en témoigne le rôle rempli par les lieux archétypiques de la « surmodernité » – prisons, usines, périphéries urbaines, voire centrales nucléaires, ensemble de lieux « sans qualités apparentes ». C’est parce que la littérature est à la fois une caisse de résonance des fantasmes et des terreurs et une conscience critique, que ces contributions veulent rendre compte de ce rapport avec l’espace, dont l’humain a lui-même organisé la planétarisation et – paradoxalement – la déshumanisation. [less ▲]

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See detailVille jordanienne, refuge palestinien
Oesch, Lucas UL

Article for general public (2011)

Detailed reference viewed: 75 (11 UL)
See detailUne ville plus que millénaire
Pauly, Michel UL

Article for general public (2007)

Detailed reference viewed: 42 (0 UL)