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See detailA cascade optimization methodology for automatic parameter identification and shape/process optimization in metal forming simulation
Ponthot, Jean-Philippe ULg; Kleinermann, Jean-Pascal

in Computer Methods in Applied Mechanics & Engineering (2006), 195(41-43), 5472-5508

Computer simulations of metal forming processes using the finite element method (FEM) are, today, well established. This form of simulation uses an increasing number of sophisticated geometrical and ... [more ▼]

Computer simulations of metal forming processes using the finite element method (FEM) are, today, well established. This form of simulation uses an increasing number of sophisticated geometrical and material models, relying on a certain number of input data, which are not always readily available. The aim of inverse problems, which will be considered here, is to determine one or more of the input data relating to these forming process simulations, thereby leading to a desired result. In this paper, we will focus on two categories of such inverse problems. The first category consists of parameter identification inverse problems. These involve evaluating the material parameters for material constitutive models that would lead to the most accurate results with respect to physical experiments, i.e. minimizing the difference between experimental results and FEM simulations. The second category consists of shape/process optimization inverse problems. These involve determining the initial geometry of the specimen and/or the shape of the forming tools, as well as some parameters of the process itself, in order to provide the desired final geometry after the forming process. These two categories of inverse problems can be formulated as optimization problems in a similar way, i.e. by using identical optimization algorithms. In this paper, we intend firstly to solve these two types of optimization problems by using different non-linear gradient based optimization methods and secondly to compare their efficiency and robustness in a variety of numerical applications. (c) 2005 Elsevier B.V. All rights reserved. [less ▲]

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See detailQuantification of Bifidobacterium spp. and Lactobacillus spp. in rat fecal samples by real-time PCR.
Delroisse, Jean-Marc; Boulvin, Anne-Lise; Parmentier, Isabelle et al

in Microbiological research (2006), (5),

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See detailMotivation et volition: une distinction incontournable
Broonen, Jean-Paul ULg

in Education-Formation (2006), 284(December), 62-71

Firstly, in this paper the historical analysis of volition as a specific construct in front of motivation and conation is developed. From the middle of the eighties volition is focused in empirical ... [more ▼]

Firstly, in this paper the historical analysis of volition as a specific construct in front of motivation and conation is developed. From the middle of the eighties volition is focused in empirical literature as a central concept in goal-directed learning behaviours, especially when goals are difficult to reach. Secondly, limits of motivation (values, expectations) to explain reaching complex learning goals which imply overcoming internal or external obstacles are heightened and volition (action control strategies and implementation intentions) is proved to basically contribute to initiate goal-directed actions and bring them to a successful conclusion. [less ▲]

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See detailTécnicas IBA: Aplicaciones en arte y arqueología
Calvo Del Castillo, Helena ULg

Scientific conference (2006)

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See detailLe Technology Assessment en question. Une analyse comparative
Delvenne, Pierre ULg; Brunet, Sébastien ULg

in Courrier Hebdomadaire du CRISP (2006), n° 1909-1910

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See detailLes compétences numériques préverbales : une revue critique
Rousselle, Laurence ULg; Seron, Xavier

in ANAE : Approche Neuropsychologique des Apprentissages chez l'Enfant (2006), 85

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See detailWind tunnel protocol for spray drift assessment
Lebeau, F.; Stainier, C.; Destain, M.-F. et al

in Parasitica (2006), 62(1-2), 22

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See detailRole of tumor-associated lipogenesis in the formation and composition of membrane microdomains
Timmermans, L.; Kischel, Philippe; Beckers, Albert ULg et al

Conference (2006)

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See detailEffect of increased CO2 in the second half of incubation on embryonic growth and on the hatching process
Everaert, Nadia ULg; Bruggeman, V.; De Smit, L. et al

Conference (2006)

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See detailComparison of ultrasound and pregnancy associated glycoproteins to diagnose and follow ongoing or failing pregnancy in pregnant heifers on the market
Prvanović, N; Beckers, Jean-François ULg; Sulon, J et al

in Slovenian veterinary research (2006), 43(10), 41-43

The objective of the present study was to compare transrectal ultrasonography and pregnancy associated glycoprotein (PAG) tests for determination of pregnancy in 72 Holstein-Friesian heifers imported from ... [more ▼]

The objective of the present study was to compare transrectal ultrasonography and pregnancy associated glycoprotein (PAG) tests for determination of pregnancy in 72 Holstein-Friesian heifers imported from Holland to Croatia. All heifers came to Croatia with written confirmation of pregnancy. During caranteen we preformed rectal and ultrasound exploration of heifers and simultaneously collected blood samples from each heifer. PAG concentrations were determined by a RIA immunoassay using bovine PAG 67 KDa as a tracer and standard. In our study 68 heifers were confirmed to be pregnant by both methods and 4 cows were confirmed for abortion by PAG test and nonpregnant according to ultrasound checking. Transrectal ultrasonography is accurate test for pregnancy diagnosis in pregnant heifers but it is impossible to say only on basis of ultrasound examination if heifers conceived and aborted or they failed to conceive in the first place. PAG RIA test is not only highly accurate and reliable method to distinguish between pregnant and nonpregnant heifers on the market. It is also useful to determine whether heifers were pregnant and embryo died and was absorbed during the transfer or heifers failed to conceive. It is possible because level of PAG persists in circulation after abortion or embrional death. In doubtful cases it can be used as a proof of pregnancy existence in heifers later confirmed to be nonpregnant. [less ▲]

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See detailQuestion à Françoise Dastur
Dewalque, Arnaud ULg

in Dewalque, Arnaud (Ed.) Alter - Revue de phénoménologie 14 (2006), p.265 sq. (2006)

J'adresse ici à Françoise Dastur une question d’ordre très général qui touche aux principes de la méthode phénoménologique et, conjointement, au statut – critique, théorique ou scientifique – du discours ... [more ▼]

J'adresse ici à Françoise Dastur une question d’ordre très général qui touche aux principes de la méthode phénoménologique et, conjointement, au statut – critique, théorique ou scientifique – du discours philosophique. Cette question concerne plus exactement ce que Husserl a nommé, au § 7 du deuxième tome des Recherches logiques, « le principe de l’absence de présupposition en théorie de la connaissance ». [less ▲]

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See detailLa sociologie de Max Scheler : une ressource phénoménologique pour un régime d’action philia au cœur de l’économie solidaire
Frère, Bruno ULg

in Social Sciences Information = Information sur les Sciences Sociales (2006), 45(4), 561-599

The present paper has a double goal. Firstly, it tries to rediscover a little used sociological system (Max Scheler’s). Secondly, it tries to propose a thematic analysis of the third sector actors’ ... [more ▼]

The present paper has a double goal. Firstly, it tries to rediscover a little used sociological system (Max Scheler’s). Secondly, it tries to propose a thematic analysis of the third sector actors’ justifications with a specific action regime (also not much discussed). These attempts merge very fast because this retrospective becomes the limits of this very (particular?) regime. It formalizes the search for social bonds in the third sector engagement. The latter could be understood as a search for philia – in the vocabulary of the regimes of action sociology – or a sympathy search – in the vocabulary of Max Scheler’s. This search for social bonds appears as a strong opposition to “capitalist mind set (Capitalistich Geist)”. [less ▲]

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