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See detailHow to face failure to growth in dogs and cats?
Peeters, Dominique ULiege

in Proceedings of the first Belgium International Congress for Small Animal Veterinarians (Canifelis 2007) (2007, January)

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See detailHow to generate regularly behaved production data? A Monte Carlo experimentation on DEA scale efficiency measurement
Santin, Daniel; Perelman, Sergio ULiege

in European Journal of Operational Research (2009), (199), 303-310

Monte Carlo experimentation is a well-known approach used to test the performance of alternative methodologies under different hypotheses. In the frontier analysis framework, whatever the parametric or ... [more ▼]

Monte Carlo experimentation is a well-known approach used to test the performance of alternative methodologies under different hypotheses. In the frontier analysis framework, whatever the parametric or non-parametric methods tested, experiments to date have been developed assuming single output multi-input production functions. The data generated have mostly assumed a Cobb–Douglas technology. Among other drawbacks, this simple framework does not allow the evaluation of DEA performance on scale efficiency measurement. The aim of this paper is twofold. On the one hand, we show how reliable two-output two-input production data can be generated using a parametric output distance function approach. A variable returns to scale translog technology satisfying regularity conditions is used for this purpose. On the other hand, we evaluate the accuracy of DEA technical and scale efficiency measurement when sample size and output ratios vary. Our Monte Carlo experiment shows that the correlation between true and estimated scale efficiency is dramatically low when DEA analysis is performed with small samples and wide output ratio variations. [less ▲]

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See detailHow to get rid of the two spotted spider mites?
Attia, Sabrine; Grissa, Kaouthar Lebdi; Heuskin, Stéphanie ULiege et al

in Revue des Régions Arides (2014), 35(3), 1739-1748

Two essential oils were tested for their toxicity against eggs and adults of Tetranychus urticae Koch as well as adults of Phytoseiulus persimilis Athias-Henriot, by using a filter paper diffusion ... [more ▼]

Two essential oils were tested for their toxicity against eggs and adults of Tetranychus urticae Koch as well as adults of Phytoseiulus persimilis Athias-Henriot, by using a filter paper diffusion bioassay without allowing direct contact. Responses varied according to oil type and dose, and mite species. The chemical analyses with GC-MS and GC-FID revealed that the two oils differed in their most abundant components. The most abundant components in the Citrus oil were linalyl acetate (41.95%), sabinene (18.60%) and linalool (18.14%) whereas pulegone (41.86%) and menthone (28.33%) were most prevalent in the Mentha oil. Mortality and fecundity were measured with 15 oils concentrations ranged from 0.01 to 8μl/l of air. Tetranychid mortality increased with increasing concentrations with LC50 value of 5.39 and 4.09 μl/l for C. aurantium and M. pulegium, respectively. However few mortality was observed in the case of P. persimilis with LC50 value of 0.46 and 0.26 μl/l for C. aurantium and M. pulegium respectively. For both oils a reduction of fecundity was observed at 0.01 μ/l in the case of T. urticae. The essential oils described herein have potential interest as fumigants for the bio-control of T. urticae. [less ▲]

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See detailHow to get the most information out of your necropsy
Jauniaux, Thierry ULiege; Coignoul, Freddy ULiege

in COST Meeting proceedings (2002)

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See detailHow to implement the recommendations for Quality Physical Education?
Cloes, Marc ULiege; Ralaivao, Michel; Ranaivoson, Patrice et al

Conference (2016, September 03)

According to the growing of the sedentariness over the world and to its negative resulting consequences for the society, it is now mandatory to act. Following the socioecological model, the solution of ... [more ▼]

According to the growing of the sedentariness over the world and to its negative resulting consequences for the society, it is now mandatory to act. Following the socioecological model, the solution of this challenge can be found in a multi-sectoral approach involving all pillars of the society. School represents the corner stone of any project aiming to influence the future. It has been pointed out as a determining element in the impact of projects aiming to promote physical activity in children as well as in adolescents, particularly when combined with other actors such as the community. During school time, several opportunities are available in order to increase the time spent in physically active behavior. A quality physical education (QPE) plays a central role in such action of the school. In 2015, UNESCO proposed guidelines aiming to promote QPE all around the world. In fact, it appears that, in many countries, stakeholders as well as physical educators do not have the resources needed to change the current policies and practices. Moreover, literature does not provide theoretical/practical support that would be necessary to implement new teaching strategies. This symposium will focus on an action research aiming to go from theory to practice on a national level. The study is built on the collaboration between the International Committee of Sport Pedagogy and the ‘Académie Nationale des Sports’ (ANS) of Madagascar. It is designed to reform and modernize physical education and sports organization in this country. The cooperation focused on the improvement of the quality of physical education, school sports, and leisure/competitive sports practice. It is based on a bottom-up process. The major aim of this process is to identify the priorities of the country in order to improve the quality of physical education in schools, sports clubs and communities emphasizing diversity, accessibility, inclusion and equity. Qualitative approaches have been implemented in order to take into account the needs of the people and the available resources. [less ▲]

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See detailHow to improve assessment of tetanus immunity in the Emergency Room: a prospective cost-effectiveness double blind study.
STUBBE, Muriel; SWINNEN, Ronny; DESRUELLES, Didier et al

Poster (2007, May 13)

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See detailHow to Improve Assessment of Tetanus Immunity in the Emergency Room: A Prospective Cost-Effectiveness, Double Blind Study
STUBBE, Muriel; SWINNEN, Ronny; DESRUELLES, Didier et al

in Prehospital & Disaster Medicine (2007), 22(Suppl 1), 86

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See detailHow to improve the ship efficiency
Caprace, Jean-David ULiege

Conference (2011, August)

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See detailHow to improve the valorisationprocess of End-Of-Life vehicles? LCA as a tool to help decision
Belboom, Sandra ULiege; Lewis, Grégory; Bareel, Pierre-François et al

Conference (2016, May 24)

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See detailHow to improve the working conditions with an aerosol delivery equipment suitable for calves ?
Genicot, B.; Peckova, M.; Lamberty, S. et al

in American Journal of Respiratory & Critical Care Medicine (1994), 149

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See detailHow to improve your vocal resonance
Morsomme, Dominique ULiege

in Behrman, Alison; Haskell, John (Eds.) Exercises for Voice Therapy (2013)

Now in its second edition, Exercises for Voice Therapy provides speech-language pathologists with step-by-step instruction for developing session materials for clients-both children and adults-with all ... [more ▼]

Now in its second edition, Exercises for Voice Therapy provides speech-language pathologists with step-by-step instruction for developing session materials for clients-both children and adults-with all types of voice disorders. The new edition includes 17 new expert contributors and 24 new exercises, provinding a greater assortment of exercises and targeting a larger variety of voice disorders. The exercises vary in difficulty and all follow the same format for easy integration into speech-language pathologists' therapy sessions.The accompanying CD contains recordings of many of the exercises to provide an aural model for those that may be difficult to interpret from the text alone. [less ▲]

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See detailHow to include equity in indicators focused on economic and social results of education?
Baye, Ariane ULiege

Scientific conference (2002, June 04)

Detailed reference viewed: 24 (2 ULiège)
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See detailHow to incorporate prior information in geophysical inverse problems: deterministic and geostatistical approaches.
Hermans, Thomas ULiege; Caterina, David ULiege; Martin, Roland et al

in EarthDoc - Near Surface 2011 - 17th European Meeting of Environmental and Engineering Geophysics (2011, September 13)

Many geophysical inverse problems are ill-posed leading to non-uniqueness of the solution. It is thus important to reduce the amount of mathematical solutions to more geologically plausible models by ... [more ▼]

Many geophysical inverse problems are ill-posed leading to non-uniqueness of the solution. It is thus important to reduce the amount of mathematical solutions to more geologically plausible models by regularizing the inverse problem and incorporating all available prior information in the inversion process. We compare three different ways to go beyond standard Occam’s inversion for electrical resistivity tomography (ERT) using electromagnetic logging data in the context of salt water infiltration: a simple reference model, a structural constraint and a geostatistical constraint based on a vertical correlation length. Results with the traditional smoothness constraint yield small contrasts of resistivity, far from the reality revealed by borehole measurements. Incorporating prior information from boreholes clearly improves the misfit with logging data. If a good reference model can always be used, it can lead to misinterpretation if its weight is too strong. When the computation of the correlation length is possible, the geostatistical inversion gives satisfactory results everywhere in the section. In this specific case, the geostatistical approach seems to be a more robust way to incorporate prior information. The structural constraint seems to be more indicated when integrating information from other geophysical methods such as GPR or seismic. [less ▲]

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See detailHow to increase species diversity in phytostabilization strategies near Lubumbashi (D.R.C.)
Boisson, Sylvain ULiege; Collignon, Julien ULiege; Le Stradic, Soizig ULiege et al

Conference (2013, October 08)

Copper contamination of soils represents a threat to natural areas and to human health. Phytostabilization, i.e using plants to immobilize contaminants, represents a well-known technology to hemper heavy ... [more ▼]

Copper contamination of soils represents a threat to natural areas and to human health. Phytostabilization, i.e using plants to immobilize contaminants, represents a well-known technology to hemper heavy metals spread across landscapes. In Katanga (Congo D.R.), Microchloa altera was recently identified as a candidate species to stabilize copper in soil. This grass naturally tolerates and accumulates high copper concentrations and belongs to the typical copper flora of Katanga. However more than 600 species compose this flora and other grasses may be used in phytostabilisation strategies. But little is known about the phenology reproductive strategy and demography of these species, which makes their use in current phytostabilization strategies difficult. The present study aims to characterize the reproduction capacity of seven other dominant grass species for future phytostabilisation tests. A total of 67 quadrats (1m²) were randomly placed across three sites. At two periods over the fruiting season, three inflorescences per species per quadrat were collected in order to estimate the number of spikes, spikelets and viable seeds. All species have sexual reproductive strategy and spikelets number presents little variation between populations. Three species are very common (Andropogon shirensis, Loudetia simplex and Eragrostis racemosa) and represent potential candidates to increase species diversity in phytostabilization strategies in Katanga. Further research, including germination tests and phytostabilization tests in situ, is planned in a near future. [less ▲]

Detailed reference viewed: 83 (18 ULiège)
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See detailHow to increase your impact with Open Access. Bruxelles, 13 février 2007 [compte rendu]
Renaville, François ULiege

in Cahiers de la Documentation = Bladen voor Documentatie (2007), 61(2), 40-42

Compte rendu de la journée nationale "How to increase your impact with Open Access" du 13 février 2007.

Detailed reference viewed: 76 (17 ULiège)