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See detailThe Critical Neighbourhood Range for Asymptotic Overlay Connectivity in Ad Hoc Networks
Calomme, Sandrine; Leduc, Guy ULg

in Ad Hoc & Sensor Wireless Networks (2006), 2(2), 169-187

We first motivate the use of ad hoc overlays. In particular, we argue that overlay routing could play a role in the spreading of ad hoc networks. We then define a simple criterion for neighbourhood: two ... [more ▼]

We first motivate the use of ad hoc overlays. In particular, we argue that overlay routing could play a role in the spreading of ad hoc networks. We then define a simple criterion for neighbourhood: two overlay nodes are neighbours if and only if there exists a path between them of at most R hops, and R is called the (overlay) neighbourhood range. A small R may result in a disconnected overlay, while an unnecessarily large R would generate extra control traffic. We are interested in the minimum R ensuring overlay connectivity, the so-called critical R. We study conditions on R to achieve asymptotic connectivity of the overlay almost surely, i.e. connectivity with probability 1 when the number of nodes in the underlying ad hoc network tends to infinity (so-called dense networks) or when the size of the field tends to infinity (socalled sparse networks), under the hypothesis that the underlying ad hoc network is itself asymptotically almost surely connected. For dense networks, we derive a necessary and sufficient condition on R, and for sparse networks we derive distinct necessary and sufficient conditions that are however asymptotically tight. These conditions, though asymptotic, shed some light on the relation linking the critical R to the number of nodes n, the field size the radio transmission range r and the overlay density D (i.e., the proportion of overlay nodes). These conditions can be considered as approximations when the number of nodes (resp. the field) is large enough. Since r is considered as a function of n or l , we are able to study the impact of topology control mechanisms, by showing how the shape of this function impacts the critical R. [less ▲]

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See detailIs it time for implementation of tight glycaemia control by intensive insulin therapy in every ICU?
Devos, P.; Preiser, Jean-Charles ULg

in Critical Care (2006), 10(2), 130

The second study on tight glycaemia control by intensive insulin therapy (IIT) confirmed in medical intensive care unit patients the decrease in hospital mortality reported by the same team in the first ... [more ▼]

The second study on tight glycaemia control by intensive insulin therapy (IIT) confirmed in medical intensive care unit patients the decrease in hospital mortality reported by the same team in the first IIT trial in surgical patients. However, methodological concerns, the high rate of hypoglycaemia in spite of the infusion of large doses of parenteral glucose and the frequent use of steroids presently preclude considering these results as recommendations in other intensive care units, but rather argue for the need for large-scale assessment of the IIT approach by multi-centre studies to confirm the efficacy and safety of this therapeutic modality. [less ▲]

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See detailDevelopment and performance assessment of an improved 8-node mixed type FEM element
Duchene, Laurent ULg; de Montleau, P.; Habraken, Anne ULg

in Juster, Neal; Rosochowski, Andrzej (Eds.) Proceedings of the 9th International ESAFORM Conference on Material Forming (2006)

Several finite element (FE) simulations were investigated using a recently developed mixed type element: the BWD3D. The main formulation of the element is largely described, with particular focus on the ... [more ▼]

Several finite element (FE) simulations were investigated using a recently developed mixed type element: the BWD3D. The main formulation of the element is largely described, with particular focus on the shear locking treatment. The formulation of the former BLZ3D element is also presented for comparison. The examples investigated in the present study were beam bending, large strain torsion, incremental forming and deep drawing .The numerical results obtained with both elements were compared to experiments. [less ▲]

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See detailThe use of various gas chromatography and mass spectrometry techniques for human biomonitoring studies
Patterson, Donald G.; Welch, S. M.; Focant, Jean-François ULg et al

in Organohalogen Compounds (2006), 68

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See detailCompte rendu de l'ouvrage collectif : Medieval Virginities
Delfosse, Annick ULg

in Moyen Age (Le) (2006), 112(2), 402-403

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See detailInter- and intra-guild interactions related to aphids in nettle (Urtica dioica L.) strips closed to field crops.
Alhmedi, A.; Haubruge, Eric ULg; Bodson, Bernard ULg et al

in Communications in Agricultural and Applied Biological Sciences (2006), 71(2 Pt B), 413-23

A field experiment designed to assess the biodiversity related to nettle strips closed to crops, and more particularly the aphid and related beneficial populations, was established in experimental farm ... [more ▼]

A field experiment designed to assess the biodiversity related to nettle strips closed to crops, and more particularly the aphid and related beneficial populations, was established in experimental farm located in Gembloux (Belgium). Margin strips of nettle (Urtica dioica) closed to wheat (Triticum aestivum), green pea (Pisum sativum) and rape (Brassicae napus) fields were investigated. The diversity, abundance of aphids and related predators were analysed according to the plant crop species and the differential pesticide application (treated plot and control). Insects were visually observed every week during all the cultivation season. Two main families of aphidophagous predators were found in all field crops and nettle, the Coccinellidae and Syrphidae. The diversity of the aphidophagous predators was shown to be higher on nettle than in field crops, particularly the Chrysopidae, the Anthocoridae and the Miridae. However, a striking difference of ladybird abundance was observed according to the aphid host plant. In one side, Coccinella septempunctata was much more abundant on Acyrthosiphon pisum infested green pea than on the other host plant species. At the opposite, higher occurrence of Harmonia axyridis was observed on the aphid infested nettle plants than on the crop plants. In particular, none of H. axyridis was found in wheat crop. Also, more than only a significant positive correlation between predator and aphid abundance, specialised relations between particular aphid species and some so-called generalist predators was determined in the fields. Finally, intraguild interactions between the aphidophagous predators was assessed and shown that only a significant negative correlation between Episyrphus balteatus and H. axyridis related to the nettle aphid, Micrlophium carnosum, was observed. The relative distribution of the ladybirds, namely C. septempunctata and H. axyridis according to the host plant, nettle strips and crop plots was discussed in relation to integrated pest management approach. [less ▲]

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See detailL'Interculturalité a-t-elle un avenir ?
Defays, Jean-Marc ULg

in Dufays, Jean-Louis; Collès, Luc; Thyrion, Francine (Eds.) Quelle didactique de l'interculturel dans les nouveaux contextes du FLE/S? (2006)

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See detailVertebrate origins: does the tunic make the man?
Delsuc, Frédéric; Baurain, Denis ULg; Philippe, Hervé

in Medecine Sciences : M/S (2006), 22(8-9, AUG-SEP), 688-690

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See detailBibliographie sélective
Provenzano, François ULg

in Denis, Benoît; De Marneffe, Daphné (Eds.) Les réseaux littéraires (2006)

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See detailDiagnosis of osteoporosis without prevalent fractures: are we missing our main target?
Richy, F.; Reginster, Jean-Yves ULg

in Osteoporosis Action (2006), 1

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See detailEpi Info - Manuel d’utilisation
Donneau, Anne-Françoise ULg

Learning material (2006)

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See detailLa traducción entre siglos: un proyecto nacional
Willson, Patricia ULg

in Rubione, Alfredo (Ed.) Historia crítica de la literatura argentina. Volumen 5: La crisis de las formas (2006)

The formal and thematic novelties or peculiarities contributed by foreign literature, their relationship to national literature, the characterization of the importing agents, and the question of language ... [more ▼]

The formal and thematic novelties or peculiarities contributed by foreign literature, their relationship to national literature, the characterization of the importing agents, and the question of language in concrete strategies of translation constitute decisive elements to establish the history of translation in a given culture. In the context of a specific period in the history of Argentine literature, this chapter delves into the origins and shaping of one of the major publishing undertakings of the turn of the century, «La Biblioteca de La Nación», where translation was central and which, according to our hypothesis, was stimulated by the political ideas of the Generation of the Eighties dating back to the 19th century. [less ▲]

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See detailAURA validation by the baloon-borne MkIV Interferometer.
Toon, G. C.; Kleinboehl, A.; Salawitch, R. J. et al

Scientific conference (2006)

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See detailLe monde des Idées
Lotze, Hermann; Dewalque, Arnaud ULg

in Philosophie (2006), 91

L’interprétation de la théorie platonicienne des Idées défendue par Hermann Lotze dans le troisième livre de sa "Logik" de 1874 consiste à comprendre la « théorie des deux mondes » à partir de la ... [more ▼]

L’interprétation de la théorie platonicienne des Idées défendue par Hermann Lotze dans le troisième livre de sa "Logik" de 1874 consiste à comprendre la « théorie des deux mondes » à partir de la distinction, à tous égards fondamentale, entre d’une part la validité des vérités, et d’autre part l’être spatio-temporel des choses ou celui, temporel, des représentations. En posant la question de la vérité, la logique n’a affaire ni à des choses, ni à des représentations. Cette thèse a conféré au chapitre sur le « monde des Idées » une signification critique de première importance et en a fait, du même coup, une référence privilégiée pour les partisans d’un antinaturalisme et d’un antipsychologisme logique. [less ▲]

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See detailQuantitative approach to the conservation of a tropical seabird population in the western Indian Ocean
Monticelli, David; Ramos, J. A.; Doucet, Jean-Louis ULg et al

Poster (2006)

The roseate tern (Sterna dougalli) is an oceanic seabird species showing mainly a tropical distribution, with a relatively fragile status worldwide. It was still recently considered as a "near-threatened ... [more ▼]

The roseate tern (Sterna dougalli) is an oceanic seabird species showing mainly a tropical distribution, with a relatively fragile status worldwide. It was still recently considered as a "near-threatened" (IUCN red list) due to the strong decline in population trends over the last decades. For instance, the annual breeding population found on Aride Island, western Indian Ocean, has fluctuated between a high of 4,000 in the 1970's to a low of 60-1200 pairs from 2000 onwards. As a result, an intensive monitoring program was conducted on Aride between 1998 and 2006 in order to understand how environmental factors may affects this breeding population. This included the estimation of annual productivity (no of chicks fledged per pair), demographic parameters such as survival rate and recruitment (age-specific breeding probabilities), and their affecting co-factors (e.g. food availability, tick parasitism,...). We suggest that these three parameters (productivity, survival, recruitment) constitute the necessary basis to model the life-cycle of this population, and, ultimately, to provide local managers with conservations measures. [less ▲]

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See detailPreferential risk of HPV16 for squamous cell carcinoma and of HPV18 for adenocarcinoma of the cervix compared to women with normal cytology in The Netherlands.
BULK, Saskia ULg; Berkhof, J.; Bulkmans, N. W. J. et al

in British journal of cancer (2006), 94(1), 171-5

We present the type-distribution of high-risk human papillomavirus (HPV) types in women with normal cytology (n=1467), adenocarcinoma in situ (ACIS) (n=61), adenocarcinoma (n=70), and squamous cell ... [more ▼]

We present the type-distribution of high-risk human papillomavirus (HPV) types in women with normal cytology (n=1467), adenocarcinoma in situ (ACIS) (n=61), adenocarcinoma (n=70), and squamous cell carcinoma (SCC) (n=83). Cervical adenocarcinoma and ACIS were significantly more frequently associated with HPV18 (OR(MH) 15.0; 95% CI 8.6-26.1 and 21.8; 95% CI 11.9-39.8, respectively) than normal cytology. Human papillomavirus16 was only associated with adenocarcinoma and ACIS after exclusion of HPV18-positive cases (OR(MH) 6.6; 95% CI 2.8-16.0 and 9.4; 95% CI 2.8-31.2, respectively). For SCC, HPV16 prevalence was elevated (OR(MH) 7.0; 95% CI 3.9-12.4) compared to cases with normal cytology, and HPV18 prevalence was only increased after exclusion of HPV16-positive cases (OR(MH) 4.3; 95% CI 1.6-11.6). These results suggest that HPV18 is mainly a risk factor for the development of adenocarcinoma whereas HPV16 is associated with both SCC and adenocarcinoma. [less ▲]

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See detailInterventies bij groeps en werkteams
Faulx, Daniel ULg; Delvaux, Sophie; Horion, Emmanuelle

Report (2006)

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See detailAdherence to anti-osteoporotic treatment: does it really matter?
Reginster, Jean-Yves ULg; Rabenda, Véronique ULg

in Future Rheumatology (2006), 1

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