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See detailThe 1988-2003 Greenland ice sheet melt extent by passive microwave satellite data and a regional climate model
Fettweis, Xavier ULg; Gallée, Hubert; Lefebre, Filip et al

in Climate Dynamics (2006), 27(5), 531-541

Measurements from ETH-Camp and JAR1 AWS (West Greenland) as well as coupled atmosphere-snow regional climate simulations have highlighted flaws in the cross-polarized gradient ratio (XPGR) technique used ... [more ▼]

Measurements from ETH-Camp and JAR1 AWS (West Greenland) as well as coupled atmosphere-snow regional climate simulations have highlighted flaws in the cross-polarized gradient ratio (XPGR) technique used to identify melt from passive microwave satellite data. It was found that dense clouds (causing notably rainfall) on the ice sheet severely perturb the XPGR melt signal. Therefore, the original XPGR melt detection algorithm has been adapted to better incorporate atmospheric variability over the ice sheet and an updated melt trend for the 1988–2003 period has been calculated. Compared to the original algorithm, the melt zone area increase is eight times higher (from 0.2 to 1.7% year−1). The increase is higher with the improved XPGR technique because rainfall also increased during this period. It is correlated to higher atmospheric temperatures. Finally, the model shows that the total ice sheet runoff is directly proportional to the melt extent surface detected by satellites. These results are important for the understanding of the effect of Greenland melting on the stability of the thermohaline circulation. [less ▲]

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See detailContributions possibles des innovations genetiques pour l'amelioration de la competitivite des filieres cotonnieres africaines.
Mergeai, Guy ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2006), 10(4), 345-350

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See detailThe Belgian Contribution
Noels-Grötsch, Arlette ULg; Aerts, Conny; Plesseria, Jean-Yves ULg et al

in Fridlund, M.; Baglin, A.; Lochard, J. (Eds.) et al Proceedings of "The CoRoT Mission Pre-Launch Status - Stellar Seismology and Planet Finding" (2006)

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See detailDétection et localisation d’endommagements structuraux par la méthode des sous-espaces, le modèle de Kalman et la méthode d’analyse en composantes principales
Yan, Ai-Min; De Boe, Pascal; Golinval, Jean-Claude ULg

in Mécanique & Industries (2006), 7

This paper deals with the application of statistical process control techniques for damage diagnosis based on vibration measurements. The first approach considered in this work is based the Stochastic ... [more ▼]

This paper deals with the application of statistical process control techniques for damage diagnosis based on vibration measurements. The first approach considered in this work is based the Stochastic Subspace Identification (SSI) algorithm, from which a Kalman model is constructed to fit the measured response histories of the undamaged (reference) structure. This model may be used to make a prediction of the newly measured responses. The residual error between the model predictions and the actual measurements is defined as a damage-sensitive feature. Outlier statistics provides then a quantitative indicator of damage. The advantage of the method is that model extraction has to be performed only once using the reference data and that no further modal identification is needed. Thus on-line structural health monitoring may easily be realized. In the second approach, principal component analysis (PCA) of the sensor time-responses is used to extract principal directions (i.e. features), which define a subspace that is representative of the dynamics of the instrumented structure. Any change in the response of a single sensor affects the subspace spanned by the complete sensor response set. It follows that the subspace corresponding to the current state of the structure can be compared to the subspace of the initial state of the structure, assumed to be healthy, in order to diagnose possible damage. Principal component analysis may also be performed for every potential subset of damaged sensors in order to identify the involved sensor, and, therefore, the damaged substructure. [less ▲]

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See detailPsoriasis et arthrite psoriasique
Henno, Audrey ULg; Rausin, Annick ULg; Malaise, Michel ULg et al

in Revue Médicale de Liège (2006), 61(5-6, May-Jun), 334-340

Psoriasis is a frequent multifactorial chronic skin disease that can lead to a decreased quality of life. Some patients also present arthritis. Those two complex inflammatory diseases share some of their ... [more ▼]

Psoriasis is a frequent multifactorial chronic skin disease that can lead to a decreased quality of life. Some patients also present arthritis. Those two complex inflammatory diseases share some of their characteristics, but several clinical manifestations can be distinguished in each of them. In addition to classical medications (constituted of topical treatments, methotrexate, ciclosporin and retinoids for cutaneous psoriasis and non steroidal anti-inflammatory drugs or methotrexate for psoriatic arthritis), they are the target of a new generation of therapies: the biologics. [less ▲]

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See detailGlaciaçoes neodevonianas E Eocarboniferas na America do sul.
Caputo, M.V.; Streel, Maurice ULg; Melo, H.G. et al

in Simposio da Amazonias (2006)

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See detailThe use of impact indicators for the evaluation of farm investment support - A case study based on the rural development programme for Wallonia (2000-2006)
Beck, Monika; Dogot, Thomas ULg

in Bergschmidt, Angela; Dirksmeyer, Walter; Efken, Josef (Eds.) et al Proceedings of the European Workshop on the Evaluation of farm investment support, investment support for improvement of processing and marketing of agricultural products (2006)

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See detailBilan classique en neuropsychologie du langage
Poncelet, Martine ULg

in Estienne, Françoise; Piérart, Bernadette (Eds.) Les bilans de langage et de voix (2006)

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See detailStudy of thermal effects in bulk RE-BCO superconductors submitted to a variable magnetic field
Laurent, Philippe; Fagnard, Jean-François ULg; Mathieu, J.-P. et al

in Journal of Physics: Conference Series (2006), 43

When bulk RE-BCO superconductors are used as permanent magnets in engineering applications, they are likely to experience transient variations of the applied magnetic field. The resulting vortex motion ... [more ▼]

When bulk RE-BCO superconductors are used as permanent magnets in engineering applications, they are likely to experience transient variations of the applied magnetic field. The resulting vortex motion may cause a significant temperature increase. As a consequence the initial trapped flux is reduced. In the present work, we first focus on the cause of a temperature increase. The temperature distribution within a superconducting finite cylinder subjected to an alternating magnetic field is theoretically predicted. Results are compared to experimental data obtained by two temperature sensors attached to a bulk YBCO pellet. Second, we consider curative methods for reducing the effect of heat flux on the temperature increase. Hall-probe mappings on YBCO samples maintained out of the thermal equilibrium are performed for two different morphologies : a plain single domain and a single domain with a regularly spaced hole array. The drilled single-domain displays a trapped induction which is weakly affected by the local heating while displaying a high trapped field. [less ▲]

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See detailHet recht op aftrek ratione temporis bis
Peeters, Bart ULg

in Tijdschrift voor Fiscaal Recht (2006)

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See detailStructural and electrical properties of tellurovanadate glasses containing Li2O
Krins, Natacha ULg; Vertruyen, Bénédicte ULg; Lepot, Laurent et al

Conference (2006)

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See detailRépublique démocratique du Congo. Le système politique de la troisième république : Genèse d’une démocratie attendue
Kabamba, Bob ULg; Verjans, Pierre ULg

in Revue de la Faculté de Droit de l'Université de Liège (2006), (n°2006/4), 561-582

Les élections de 2006 en République démocratique du Congo sont la conséquence d'un long processus commencé par les accords de paix à l'issue de la guerre qui a déchiré le pays. Elles sont aussi le début d ... [more ▼]

Les élections de 2006 en République démocratique du Congo sont la conséquence d'un long processus commencé par les accords de paix à l'issue de la guerre qui a déchiré le pays. Elles sont aussi le début d'un processus démocratique classique. Les résultats de ces élections méritent d'être analysés en terme politique mais aussi démographique. [less ▲]

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See detailMichael Krüger: "Die Turiner Komödie". Mit einer literarischen Speisekarte
Küpper, Achim ULg

E-print/Working paper (2006)

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