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See detailPASSIVE SUPPRESSION OF AEROELASTIC INSTABILITIES OF IN-FLOW WINGS BY TARGETED ENERGY TRANSFERS TO LIGHTWEIGHT ESSENTIALLY NONLINEAR ATTACHMENTS
lee, Young S.; Vakakis, Alexander F.; Bergman, Lawrence A. et al

in International Forum on Aerolasticity and Strucural Dynamics, Stockholm, 2007 (2007)

Theoretical and experimental suppression of aeroelastic instabilities by means of broadband passive targeted energy transfers has been recently studied. A single-degree-offreedom (SDOF) nonlinear energy ... [more ▼]

Theoretical and experimental suppression of aeroelastic instabilities by means of broadband passive targeted energy transfers has been recently studied. A single-degree-offreedom (SDOF) nonlinear energy sink (NES) was coupled to a 2-DOF rigid wing modeled in the low-speed, subsonic regime with quasi-steady aerodynamic theory. The nonlinear attachment was designed and optimized to suppress the critical nonlinear modal energy exchanges between the flow and the (pitch and heave) wing modes, thus suppressing the (transient) triggering mechanism of aeroelastic instability. We performed bifurcation analysis to find regions of robust passive aeroelastic suppression in parameter space. Then, we employed multi-degreeof-freedom nonlinear energy sinks (MDOF NESs) to improve robustness of the aeroelastic instability suppression. Bifurcation analysis by a numerical continuation technique demonstrated that controlling the occurrence of a limit point cycle (LPC or saddle-node) bifurcation point above a Hopf bifurcation point is crucial to enhancing suppression robustness. MDOF NESs not only can enhance robustness of suppression against even strong gust-like disturbances, but they require lower NES mass compared to SDOF NES designs. The validity of the theoretical findings was proven by a series of wind tunnel experiments. [less ▲]

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See detailPraktisches Verfahren zur Bemessung von Brückenseilen und -hängern zur Vermeidung Regen-Wind-induzierter Schwingungen
Denoël, Vincent ULg; Hortmanns, Michael; Sedlacek, Gerhard

in Stahlbau (2007), 76(2), 126-130

Rain-wind induced vibrations have been widely studied during the last decades. Today it is desirable to use the experience gathered in this field in order to develop a practical design procedure offering ... [more ▼]

Rain-wind induced vibrations have been widely studied during the last decades. Today it is desirable to use the experience gathered in this field in order to develop a practical design procedure offering both security and economy. After a restricted review of some analytical models, this paper points out the need for a semi-empirical method if the complexity of this design procedure has to be kept at its minimum. Based on measured data collected during field tests and wind tunnel experiments, a new proposal is suggested. [less ▲]

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See detailPeaufiner la dermatopathologie fonctionnelle, la dermometrologie et la mecanobiologie.
Pierard, Gérald ULg; Pierard, Claudine ULg; Hermanns-Le, Trinh ULg et al

in Revue Médicale de Liège (2007), 62 Spec No

Dermatopathology is a tool using the microscopic examination for diagnosing cutaneous diseases. The frontiers of its field of interest were extended by exploring the physiopathology of skin functional ... [more ▼]

Dermatopathology is a tool using the microscopic examination for diagnosing cutaneous diseases. The frontiers of its field of interest were extended by exploring the physiopathology of skin functional properties. An example is provided by the evaluation of alterations of skin suppleness in various connective tissue disorders. This approach takes profit from both conventional histology and histochemistry. Immunohistology targeting dermal dendrocytes reveals their various shapes reflecting the modifications in tensegrity under the control of mechanobiology. The latter property is an indicator of the evolution and severity of the connective tissue changes. Electron microscopy is also very instructive in this field. The in vivo examination by dermoscopy highlights a similar mechanism involving the melanocytes. From an engineering point of view, the skin and subcutaneous tissue represent an integrated load-transmitting structure. It is subjected to intrinsic and environmental influences. Some models were offered to explain how skin withstands and transmits loads through deforming appropriately or abnormally according to disorders of the connective tissue structure. We report a brief review of the principles of interpretation of the measurements of the skin biomechanical properties, and the histological presentations of mechanobiology. The applications of such investigations are summarized in the Ehlers-Danlos syndrome, inguinal hernias, gravitational syndrome, diabetes, scleroderma, hemodialysed patients, in case of growth hormone administration and during climacteric. [less ▲]

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See detailReview of Tomi Adeaga's Translating and Publishing African Language(s) and Literature(s): Examples from Nigeria, Ghana and Germany
Tunca, Daria ULg

in Commonwealth : Essays and Studies (2007), 31(1), 119-121

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See detailRevue Internationale des Droits de l'Antiquité LV (2007) (parue en septembre 2008)
Gerkens, Jean-François ULg

in Revue Internationale des Droits de l'Antiquité [= RIDA] (2007), LIV

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See detailMiddle Devonian (Givetian) megaspores from Belgium (Ronquières) and Libya (A1-69 borehole)
De Ville de Goyet, F.; Breuer, P.; Gerrienne, Philippe ULg et al

in Carnets de Géologie = Notebooks on Geology (2007), CG2007(M01/02), 68-73

Preliminary results are presented on newly discovered megaspore assemblages recovered from Givetian localities at Ronquières, Belgium, and a borehole (A1-69) drilled in the Ghadames Basin, Libya, by SHELL ... [more ▼]

Preliminary results are presented on newly discovered megaspore assemblages recovered from Givetian localities at Ronquières, Belgium, and a borehole (A1-69) drilled in the Ghadames Basin, Libya, by SHELL in 1959. The miospore biostratigraphy of the Ronquières and of A1-69 borehole sections has been published (Ville de Goyet, 2005; Gerrienne et alii, 2004; Loboziak & Streel, 1989; Loboziak et alii, 1992; Streel et alii, 1990). [less ▲]

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See detailApprendre et enseigner : du simple au complexe et vice versa
Crahay, Marcel ULg

in Dupriez, Vincent; Chapelle, G. (Eds.) Enseigner (2007)

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See detailFemmes et pèlerinages
Dor, Juliette ULg; Henneau, Marie-Elisabeth ULg

Book published by Compostela Group of Universities (2007)

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See detailRepresentations of Migrant Workers in the Pearl River
Florence, Eric ULg

in Critical Asian Studies (2007), 39(1), 121-150

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See detailLa confrontation de l’offre et de la demande mondiales de céréales fixe désormais le prix payé au producteur européen
Burny, Philippe ULg

in Faculté universitaire des Sciences agronomiques de Gembloux; Centre wallon de Recherches agronomiques (Eds.) 40 ans Livre blanc Céréales-Gembloux février 2007 (2007)

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See detailWhole body vibration in the treatment of fibromyalgia: Influence on muscle performances
Maquet, Didier ULg; Helene, Loic; Demoulin, Christophe ULg et al

in Isokinetics & Exercise Science (2007), 15

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See detailInfrastructure Reform in Developing Economies: Evidence from a Survey of Economic Performance Measures
Estache, Antonio; Perelman, Sergio ULg; Trujillo, Lourdes

in Coelli, Tim; Lawrence, Denis (Eds.) Performance Measurement and Regulation of Network Utilities (2007)

This paper surveys the growing literature on developing countries’ infrastructure performance measured through frontier analysis techniques. The focus is generally on assessments of operators’ efficiency ... [more ▼]

This paper surveys the growing literature on developing countries’ infrastructure performance measured through frontier analysis techniques. The focus is generally on assessments of operators’ efficiency and productivity growth as part of benchmarking exercises. Two broad types of benchmarks are identified in the literature. The first is based on cross-country or cross regional performance comparisons, the second compares performance before and after reforms, including privatization. These benchmarks are often used to assess the impact of potential or actual policy reforms in specific countries. In a growing number of instances, they are also being conducted in the context of tariff revisions to assess the efficiency gains that can be shared with users as part of these revisions. The main policy conclusions are that there is a difference in the performance effect of key reforms, in particular privatization, between the transport sector and the utilities sector but that generally incentive based regulation delivers efficiency in both sectors The main technical conclusion is that even if in developing economies data problems are constraining, these constraints are not as binding as often argued. [less ▲]

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See detailA dataset for hadron elastic scattering
Cudell, Jean-René ULg; Lenguel, Sasha; Martynov, E.

Textual, factual or bibliographical database (2007)

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See detailPrevention and treatment of major blood loss
Detry, Olivier ULg; De Roover, Arnaud ULg; Honore, Pierre ULg

in New England Journal of Medicine [=NEJM] (2007), 357(12), 1261-1261

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See detailHistory of the Common Agricultural Policy : from the origin to the "mid-term review" in 2003
Burny, Philippe ULg

in Czech Presidency at the EU Council-Preparation & Priorities. Prague, the 28-29th November 2007. Proceedings (2007)

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See detailDevelopment of atherosclerosis for the vascular surgeon.
Defraigne, Jean-Olivier ULg

in Liapis, C. D. (Ed.) European Manual of Medicine (2007)

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