References of "2010"
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See detailA GPS/GNSS dense network used to monitor ionospheric positioning error
Wautelet, Gilles ULg; Lejeune, Sandrine; Warnant, René ULg

Poster (2010, December)

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See detailRapport 2010- Windsteel : développement de solutions en acier pour la construction éolienne
Rigo, Philippe ULg; Amrane, Amirouche ULg; Thiry

Report (2010)

Un logiciel appelé EOL-OS a été développé dans le cadre des WP4 et 5 du projet « Windsteel : développement de solutions en acier pour la construction éolienne ». Cet outil informatique est essentiellement ... [more ▼]

Un logiciel appelé EOL-OS a été développé dans le cadre des WP4 et 5 du projet « Windsteel : développement de solutions en acier pour la construction éolienne ». Cet outil informatique est essentiellement destiné au dimensionnement et à l’optimisation structurelle des éoliennes offshores de type monopile en acier. Toutefois, lors des développements effectués dans le courant du second semestre de l’année 2010, son application aux éoliennes onshore en acier a été rendue également possible. Ce document s’inscrit dans la continuité du rapport technique semestriel S1 de 2010. Il est laissé au lecteur le soin de se référer à ce dernier pour ce qui concerne la nomenclature utilisée pour décrire les structures étudiées ainsi que le détail des modules implémentés au terme des 6 premiers mois de 2010. La première partie du présent rapport concerne les développements effectués sur le logiciel EOL-OS et se focalise en particulier sur les modules implémentés dans le courant du semestre S2 de 2010. La seconde partie traite des résultats d’optimisation obtenus au terme des différentes simulations et tirent des conclusions générales sur le dimensionnement des structures support des éoliennes. [less ▲]

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See detailConsensus in non-commutative spaces
Sepulchre, Rodolphe ULg; Sarlette, Alain ULg; Rouchon, Pierre

in Proceedings of the 49th IEEE Conference on Decision and Control (2010, December)

Convergence analysis of consensus algorithms is revisited in the light of the Hilbert distance. The Lyapunov function used in the early analysis by Tsitsiklis is shown to be the Hilbert distance to ... [more ▼]

Convergence analysis of consensus algorithms is revisited in the light of the Hilbert distance. The Lyapunov function used in the early analysis by Tsitsiklis is shown to be the Hilbert distance to consensus in log coordinates. Birkhoff theorem, which proves contraction of the Hilbert metric for any positive homogeneous monotone map, provides an early yet general convergence result for consensus algorithms. Because Birkhoff theorem holds in arbitrary cones, we extend consensus algorithms to the cone of positive definite matrices. The proposed generalization finds applications in the convergence analysis of quantum stochastic maps, which are a generalization of stochastic maps to non-commutative probability spaces. [less ▲]

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See detailDe l'initiative citoyenne à l'entreprise d'économie sociale
Mertens de Wilmars, Sybille ULg

in Collard marie-Caroline (Ed.) Initiatives citoyennes, l'économie sociale de demain ? (2010)

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See detailReal-time synchronization feedbacks for single-atom frequency standards: V- and Lambda-structure systems
Mirrahimi, Mazyar; Sarlette, Alain ULg; Rouchon, Pierre

in Proceedings of the 49th IEEE Conference on Decision and Control (2010, December)

This paper proposes simple feedback loops, inspired from extremum-seeking, that use the photon emission times of a single quantum system following quantum Monte-Carlo trajectories in order to lock in real ... [more ▼]

This paper proposes simple feedback loops, inspired from extremum-seeking, that use the photon emission times of a single quantum system following quantum Monte-Carlo trajectories in order to lock in real time a probe frequency to the system’s transition frequency. Two specific settings are addressed: a 3-level system coupling one ground to two excited states (one highly unstable and one metastable) and a 3-level system coupling one excited to two ground states (both metastable). Analytical proofs and simulations show the accurate and robust convergence of probe frequency to system-transition frequency in the two cases. [less ▲]

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See detailPregnancy-Associated Glycoprotein and Progesterone Concentrations during Pregnancy Failure in Bedouin Goat from the Southwest of Algeria.
Charallah, Salima; Amirat, Z.; Sulon, Joseph et al

in Reproduction in Domestic Animals (2010), 45(6), 213-238

Contents Thirteen female Bedouin goats living in arid land of Algeria Sahara desert were used in this study. These goats were pregnant but they sustained an abortion because of unidentified causes. None ... [more ▼]

Contents Thirteen female Bedouin goats living in arid land of Algeria Sahara desert were used in this study. These goats were pregnant but they sustained an abortion because of unidentified causes. None of the goats showed any signs of general disease. Plasma concentrations of caprine pregnancy-associated glycoproteins (cPAGs) and progesterone (P4) were determined during pregnancy using radioimmunoassay. The cPAGs concentration was undetectable (<0.8 ng/ml) throughout the first 2 weeks of gestation. From week 3 after mating, cPAGs concentration was detectable with significant individual variations (p < 0.05) reaching a maximum secretion (436.1 ng/ml). Throughout gestation, cPAGs concentration remained relatively constant but decreased few days before abortion, on an average of 9.2 +/- 1.2 days (n = 11), except for two females where the concentrations decreased later (1-2 days before abortion). One or two peaks of cPAGs concentrations (in 4/13 and in 9/13 females, respectively) have been measured few weeks before abortion (77-124 days after mating), when a decline of cPAGs was detected. The P4 concentration increased after mating, and was high from the first week till the end of pregnancy. The P4 concentration (9.1 +/- 0.9 ng/ml) decreased rapidly (<0.5 ng/ml) after 4 +/- 0.7 days (n = 6) or 9.4 +/- 1.6 days (n = 7) before abortion. A positive relationship (p < 0.01) was found between P4 and cPAGs concentrations during gestation. Results indicate that cPAGs and P4 measurements can be used for monitoring gestation and for abortion prediction. [less ▲]

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See detailDiagnosis and Screening for Cytomegalovirus Infection in Pregnant Women in Cuba as Pronostic Markers of Congenital Infection in Newborns: 2007-2008
Kouri, Vivian; Correa, Consuelo B; Verdasquera, Denis et al

in The Pediatrics Infectious Disease Journal (2010), 29(12), 1105-1110

Background: Human cytomegalovirus (HCMV) has established itself as the most significant cause of congenital infection in the developed world. The objective of this research was prenatal identification of ... [more ▼]

Background: Human cytomegalovirus (HCMV) has established itself as the most significant cause of congenital infection in the developed world. The objective of this research was prenatal identification of pregnant women at risk for developing active infection due to HCMV as well as to diagnose congenitally infected newborns. Methods: A diagnostic algorithm based on specific immunoglobulin G (IgG), IgM, and, IgG avidity was used to screen serum from 1131 pregnant women enrolled prospectively from 3 municipalities from Havana City, Cuba during 2007–2008. Qualitative multiplex nested PCR and quantitative real time-based PCR testing for HCMV DNA were performed on urine and saliva specimens from women detected with active infection and from their newborns. Results: Most women were seropositive to HCMV (92.7%), with 2.38% (27 women) having active infection. Primary infection was detected in 20 pregnant women (1.77%) while 7 patients (0.62%) had active nonprimary infection. HCMV DNA was detected in specimens from 9 of the 27 pregnant women by both PCR methods. HCMV congenital infection was diagnosed in 12 (1.06%) of the 26 live children born from 25 mothers with active infection, for a vertical transmission rate of 46.2%. Two fetal deaths were reported from 2 women with active infection; furthermore 2 newborns were symptomatic at birth and 2 showed sequelae during the follow-up done until 6 months age. Conclusions: Mothers with active infection during the pregnancy and with HCMV excretion had significant risks, RR = 1.16 and RR = 1.35, respectively, to have congenitally infected children. [less ▲]

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See detailContract 21539/08/NL/SFe - Advancement of mechanical verification methods for non-linear spacecraft: Nonlinearity identification methods: predictive analyses
Kerschen, Gaëtan ULg; Noël, Jean-Philippe ULg

Report (2010)

The objective of this technical note is to explore the applicability of nonlinear system identification techniques to spacecraft structures. To this end, numerical experiments carried out using the finite ... [more ▼]

The objective of this technical note is to explore the applicability of nonlinear system identification techniques to spacecraft structures. To this end, numerical experiments carried out using the finite element model of the SmallSat spacecraft are used, without, however, having access to the model itself. The constraints imposed by the considered techniques for breadboard testing are also highlighted. [less ▲]

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See detailL2MA-2 Langage oral, langage écrit, mémoire, attention
Chevrie-Muller, Claude; Maillart, Christelle ULg; Simon, Anne-Marie et al

Book published by ECPA (2010)

Batterie d'évaluation du langage oral et écrit destinée aux enfants de CE1 (2ème primaire) à la 6ème.

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See detailSustainable social enterprise : model and development strategy
Phang, Hanam; Eum, Hyung Sik ULg

Report (2010)

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See detailTowards a Taxonomy of Explanatory Failure Patterns for Small Firms: A Quantitative Research
Crutzen, Nathalie ULg; Van Caillie, Didier ULg

in Review of Business and Economics (2010), 55(4), 438-463

Whereas it is obvious that the failure process can vary from one firm to another (Argenti, 1976; D'Aveni, 1989; Laitinen, 1991), to date, few researchers have worked on the detection of several ... [more ▼]

Whereas it is obvious that the failure process can vary from one firm to another (Argenti, 1976; D'Aveni, 1989; Laitinen, 1991), to date, few researchers have worked on the detection of several explanatory failure patterns. In addition, none of the reviewed research really focuses on small firms while their failure is important and particular (Julien, 2005). Considering these observations and on the basis of two complementary statistical analyses (Thiétart, 2003), this article identifies, among a sample of 208 small Belgian distressed firms, a taxonomy of five explanatory business failure patterns, i.e. five homogeneous groups of small firms on the basis of the reasons for their failure. As the detection of the fundamental explanatory failure factors is the basis of failure prevention (Argenti, 1976), the identification of these patterns is of crucial importance for a better understanding and for a better prevention of this phenomenon [less ▲]

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See detailLe mythe de la jeunesse : Sartre et les générations des Trente Glorieuses
Sindaco, Sarah ULg

Article for general public (2010)

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See detailFINE-SCALE HABITAT SELECTION BY TWO SPECIALIST WOODPECKERS OCCURRING IN BEECH AND OAK-DOMINATED FORESTS IN SOUTHERN BELGIUM
Delahaye, Laurence; Monticelli, David; Lehaire, François ULg et al

in Ardeola (2010), 57(2), 339-362

We studied the identification of key habitat parameters for two specialist woodpecker species (middle spotted woodpecker Dendrocopos medius and lesser spotted woodpecker D. minor) associated with mature ... [more ▼]

We studied the identification of key habitat parameters for two specialist woodpecker species (middle spotted woodpecker Dendrocopos medius and lesser spotted woodpecker D. minor) associated with mature broadleaved forests ecosystems in Europe, and the modelling of their specific requirements with a view to assist forest managers. The study was conducted in four beech and oak-dominated forests (Haut-Fays, Halma, Gembes and Croix-Scaille) located in the Ardennes Region of Southern Belgium. The study sites covered a total area of ca. 20 km². A census of woodpecker occurrence (presenceabsence) was implemented from 2000 to 2003 within 255 1-ha plots. Habitat variables describing stand age, tree density, snag density, stand composition and vertical vegetation structure were also sampled at the same plots to develop both logistic and autologistic regression models describing habitat use.Middle spotted woodpecker (MSW) uses the oak-rich locations (mean basal area of 15.6 m²/ha), with selection of areas with the largest, oldest oak trees (mean circumference > 150 cm), and with a high diversity of tree species in the overstory. Similarly, the lesser spotted woodpecker (LSW) was detected in areas presenting the highest percentage cover of oak trees but with a selection of younger stands, with a high density of snags and dead wood (mean of 9 m³/ha). The integration of an autocorrelation term improved model performance for the LSW but not for MSW. Our results highlight the importance of a high disponibility of oak trees for these two sympatric species. The climax forest in northwest Europe is beech so that public and private owners must develop appropriate forest management plans to prevent the conversion of oak to beech forests. In particular, forest managers can promote an active oakregeneration management to obtain a balanced representation of age classes. They must also aim to maintain/increase the volume of dead wood resources by reserving all trees produced by storms or any other cause of natural mortality. [less ▲]

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See detailCompte-rendu de l'ouvrage de G. Sena Chiesa (dir.), Gemme dei Civici Musei d’Arte di Verona
Veymiers, Richard ULg

in Bryn Mawr Classical Review [=BMCR] (2010), 2010.12.33

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See detailProgrammes et actions publiques pour stimuler l’innovation régionale dans la compétitivité mondiale
Doloreux, D.; Devillet, Guénaël ULg; Melançon, Y.

in Canadian Public Administration / Administration publique du Canada (2010), 53

Abstract: Theobjectiveofthisarticleistoanalysepublicinitiativestostimulateregional innovation in Walloon region in Belgium and in the Province of Quebec. The empirical analysis relies on the competitive ... [more ▼]

Abstract: Theobjectiveofthisarticleistoanalysepublicinitiativestostimulateregional innovation in Walloon region in Belgium and in the Province of Quebec. The empirical analysis relies on the competitive poles program in Walloon and on the ACCORD project (Action Concerte ́e de Coope ́ration Re ́gionale de De ́veloppement) in Quebec. The comparison will allow discussing the implementation and regional embedding of these programs and will reveal the similarities and the differences between the structure, the organization and the deployment of these strategies in the various regions targeted. [less ▲]

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See detailNightglow investigation around 1.27 µm with VIRTIS/Venus-Express
Migliorini, A.; Piccioni, G.; Gérard, Jean-Claude ULg et al

Conference (2010, December)

In this study we report about the investigation of the spectral region 1.22-1.32 µm of the night side of Venus, observed by the VIRTIS instrument (Visible and InfraRed Spectral Imaging Spectrometer) on ... [more ▼]

In this study we report about the investigation of the spectral region 1.22-1.32 µm of the night side of Venus, observed by the VIRTIS instrument (Visible and InfraRed Spectral Imaging Spectrometer) on board the Venus Express spacecraft. This spectral region is characterized by the presence of the extensively studied (a1Δg – X3Σg-) (0,0) O2 nightglow band, the most intense emission observed on the night side of Venus. However, the comparison between data and synthetic spectra from the (0,0) band only, lacks a good match at wavelengths longer than 1.27 μm, especially in the region around 1.28-1.29 μm. The effects of temperature, CO2 and the (8,5) OH emission at 1.28 µm were investigated as a possible cause to the spectral disagreement, but they all are not enough to explain the observed difference. Instrumental effects were also excluded as possible cause of the mismatch. We found that the inclusion of the (1,1) band O2 emission in the synthetic spectra, originating from the upper vibrational level ν=1 of the (a1Δg – X3Σg-) transition centered at 1.28 μm, in addition to the (0,0), significantly improves the agreement between simulated spectra and observed data in the region at 1.28-1.29 μm. A synthetic spectrum, including the (0,0) and the (1,1) is produced and compared to 4 observed VIRTIS spectra, as an example. From the analyzed data, it results that the (1,1) band with an intensity ranging from the 8 to 15% of the (0,0) band is required to best reproduce the observed VIRTIS spectra. This corresponds to a (1,1) band intensity equal to 3.1-5.8 MR, in limb view, in agreement with the upper limit set by Connes et al., (1979), on their ground-based observations of the oxygen nightglow of Venus. [less ▲]

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See detailConservation of endemic plants from the Katanga copper belt (DR Congo)
Lebrun, Julie ULg; Minengo Handjila, Guylain; Weiskopf, Thomas et al

Poster (2010, December)

The Katanga copper belt, where natural outcrops of copper-rich rocks are colonised by highly original plant communities, has been recognised as a hotspot for metallophyte species. The flora comprises more ... [more ▼]

The Katanga copper belt, where natural outcrops of copper-rich rocks are colonised by highly original plant communities, has been recognised as a hotspot for metallophyte species. The flora comprises more than 600 species from which 30 are endemics. These plants represent a valuable phytogenetic resource for revegetation and restoration programs, for the phytostabilisation and for the remediation of heavy metal pollutions. However, the flora of metalliferous soils is threatened by mining activities in Katanga. Actions aiming at preserving these species are therefore urgent. Since 2007, a unique conservation project has been launched by scientists supported by a mining company. The aim is to elaborate a program that allows biodiversity conservation while being compatible with mining activities. The project combines in-situ and ex-situ conservation strategies involving ecosystem reconstruction, species translocations, protected areas designation and the development of seed banks in Belgium and in Katanga. [less ▲]

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See detailAttogram level measurement of POPs in human: From adipose tissue to DBS
Focant, Jean-François ULg; Welch; Turner et al

Conference (2010, December)

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