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See detailModel based control for waste heat recovery rankine cycle system in heavy duty trucks
Grelet, Vincent; Dufour, Pascal; Nadri, Madiha et al

in Proceedings of the 3rd ASME International Seminar on ORC Power Systems (ORC) (2015)

Driven by future emissions legislations and increase in fuel prices engine, gas heat recovering has recently attracted a lot of interest. In the past few years, a high number of studies have shown the ... [more ▼]

Driven by future emissions legislations and increase in fuel prices engine, gas heat recovering has recently attracted a lot of interest. In the past few years, a high number of studies have shown the interest of energy recovery Rankine based systems for heavy duty trucks engine compounding. Recent studies have brought a significant potential for such a system in a Heavy Duty (HD) vehicle, which can lead to a decrease in fuel consumption of about 5% [Wang et al. (2011)] and reduce engine emissions. But many challenges still need to be faced before the vehicle integration. This paper presents a control strategy development for waste heat recovery Rankine based systems in heavy duty trucks. Due to the highly transient operating conditions, improving the control strategy of those systems is an important step to their integration into a vehicle. It is shown here that moving to more advanced control strategies than classical PIDs lead to some gains in terms of performance. Due to the limited availability and high operational cost of test bench, the validation of such a controller is done on a representative and previously validated model. [less ▲]

Detailed reference viewed: 41 (3 ULg)
See detailA Model Based Study of Carbon Fluxes at Ten European Forest Sites
Falge, E.; Tenhunen, J.; Aubinet, Marc ULg et al

in Valentini, Riccardo (Ed.) Fluxes of Carbon, Water and Energy of European Forests (2003)

Detailed reference viewed: 20 (0 ULg)
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See detailModel based, gain-scheduled anti-windup control for LPV systems
Forni, Fulvio ULg; Galeani, Sergio

in 46th IEEE Conference on Decision and Control (cdc 2007) (2007)

In this paper we show that a recently proposed technique for anti-windup control of exponentially unstable plants can be easily extended to solve the corresponding robust anti-windup problem for linear ... [more ▼]

In this paper we show that a recently proposed technique for anti-windup control of exponentially unstable plants can be easily extended to solve the corresponding robust anti-windup problem for linear parameter varying systems, for which the time varying parameters are measured online. For this class of plants, it is shown that the proposed technique is minimally conservative with respect to the size of the resulting operating region: in particular, such a region is (up to an arbitrarily small quantity) exactly the largest set on which asymptotic stability can be guaranteed for the considered plant, for the given saturation level and uncertainty characteristics. [less ▲]

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See detailModel calculations of the Sivers function satisfying the Burkardt sum rule
Courtoy, Aurore ULg; Scopetta, S.; Vento, V.

in Physical Review. D, Particles, Fields, Gravitation, and Cosmology (2009), 79(7),

It is shown that, at variance with previous analyses, the MIT bag model can explain the available data of the Sivers function and satisfies the Burkardt sum rule to a few percent accuracy. The agreement ... [more ▼]

It is shown that, at variance with previous analyses, the MIT bag model can explain the available data of the Sivers function and satisfies the Burkardt sum rule to a few percent accuracy. The agreement is similar to the one recently found in the constituent quark model. Therefore, these two model calculations of the Sivers function are in agreement with the present experimental and theoretical wisdom. © 2009 The American Physical Society. [less ▲]

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See detailModel Checking in Practice: An Analysis of the ACCESS.bus Protocol using SPIN
Boigelot, Bernard ULg; Godefroid, Patrice

in Lecture Notes in Computer Science (1996), 1051

This paper presents a case study of the use of model checking for analyzing an industrial protocol, the ACCESS.bus protocol. Our analysis of this protocol was carried out using SPIN, an automated ... [more ▼]

This paper presents a case study of the use of model checking for analyzing an industrial protocol, the ACCESS.bus protocol. Our analysis of this protocol was carried out using SPIN, an automated verification system which includes an implementation of model-checking algorithms. A model of the protocol was developed, and properties expressed by linear-time temporal-logic formulas were checked on this model. This analysis revealed subtle flaws in the design of the protocol. Developers who worked on implementations of ACCESS.bus were unaware of these flaws at a very late stage of their development process. We also present suggestions for solving the detected problems. [less ▲]

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See detailModel complexity and performance: How far can we simplify?
Raick, Caroline ULg; Soetaert, Karline; Grégoire, Marilaure ULg

in Progress in Oceanography (2006), 70(1), 27-57

Handling model complexity and reliability is a key area of research today. While complex models containing sufficient detail have become possible due to increased computing power, they often lead to too ... [more ▼]

Handling model complexity and reliability is a key area of research today. While complex models containing sufficient detail have become possible due to increased computing power, they often lead to too much uncertainty. On the other hand, very simple models often crudely oversimplify the real ecosystem and can not be used for management purposes. Starting from a complex and validated 1D pelagic ecosystem model of the Ligurian Sea (NW Mediterranean Sea), we derived simplified aggregated models in which either the unbalanced algal growth, the functional group diversity or the explicit description of the microbial loop was sacrificed. To overcome the problem of data availability with adequate spatial and temporal resolution, the outputs of the complex model are used as the baseline of perfect knowledge to calibrate the simplified models. Objective criteria of model performance were used to compare the simplified models' results to the complex model output and to the available data at the DYFAMED station in the central Ligurian Sea. We show that even the simplest (NPZD) model is able to represent the global ecosystem features described by the complex model (e.g. primary and secondary productions, particulate organic matter export flux, etc.). However, a certain degree of sophistication in the formulation of some biogeochemical processes is required to produce realistic behaviors (e.g. the phytoplankton competition, the potential carbon or nitrogen limitation of the zooplankton ingestion, the model trophic closure, etc.). In general, a 9 state-variable model that has the functional group diversity removed, but which retains the bacterial loop and the unbalanced algal growth, performs best. (C) 2006 Elsevier Ltd. All rights reserved. [less ▲]

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See detailModel Discrimination Tools in Apoptosis
Cimatoribus, C.; Eißing, T.; N., Elvassore et al

in Foundations of Systems Biology in Engineering, FOSBE 2005 (2005, August)

Detailed reference viewed: 7 (0 ULg)
See detailModel emulsion systems
Blecker, Christophe ULg; Paquot, Michel ULg

Conference (1995, April)

Detailed reference viewed: 51 (31 ULg)
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See detailModel Extension Facilitates Parameter Estimation for Kinetic Reaction Networks
Fey, Dirk; Bullinger, Eric ULg

Poster (2007, September)

Detailed reference viewed: 13 (0 ULg)
See detailModel Extension Facilitates Parameter Estimation for Kinetic Reaction Networks
Fey, Dirk; Bullinger, Eric ULg

Poster (2007, September)

Detailed reference viewed: 2 (0 ULg)
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See detailA model for assessing water chemistry by using aquatic bryophyte assemblages in north-eastern France
Vanderpoorten, Alain ULg; Thiébaut, G.; Trémolières, M. et al

in Verhandlungen der Internationalen Vereinigung für Theoretische und Angewandte Limnologie = Proceedings of the International Association of Theoretical and Applied Limnology (2001), 27

Detailed reference viewed: 11 (1 ULg)
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See detailA MODEL FOR CELL/MATRIX GROWTH ON 3D SURFACES: A COUPLING OF LEVEL SET METHOD AND BRINKMAN EQUATION
Guyot, Yann ULg; Papantoniou, Ioannis; Chai, Yoke Chin et al

Conference (2013, September 11)

Detailed reference viewed: 69 (6 ULg)
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See detailA model for concrete in the fire situation and its application in structural fire engineering
Gernay, Thomas ULg

Scientific conference (2014, October 21)

Detailed reference viewed: 27 (7 ULg)
Peer Reviewed
See detailA model for optimal sea-river shipping management
Marchal, Jean ULg; Zhang, Z. M.

in Proceedings of the Third Research Roundtable Conference on Shortsea Shipping (1996, June)

Detailed reference viewed: 18 (0 ULg)
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See detailA model for promoting poultry industry development in Togo: feeding improvement, capacity building and extension
Tona, K.; Kamers, K.; Teteh, A. et al

in World's Poultry Science Journal (2014), 70

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See detailA model for promoting poultry industry development in Togo: Part 1. Management practices and incubation conditions
Tona, K.; Agbonon, A.; Eklu-Gadegbeku, K. et al

in International Journal of Poultry Science (2014), 13(3), 176-184

In commercial poultry husbandry practice, the hatchery takes over the incubation of bird eggs in order to provide as many day-old chicks as needed at any time to farmers. The main bottleneck for poultry ... [more ▼]

In commercial poultry husbandry practice, the hatchery takes over the incubation of bird eggs in order to provide as many day-old chicks as needed at any time to farmers. The main bottleneck for poultry industry development in Togo is the lack of day-old chick supply. Indeed, there is no proficient hatchery which can cover the needs of the farmers because of lack of information about hatchery management or people trained as hatchery managers. Also, there is lack of information about management practice aspects, etc. With the aim to promote poultry industry in Togo, an interuniversity project [Catholic University of Leuven (KUL) and University of Lome (UL)] as a model of poultry industry development was implemented. Specific objectives of the current project are to implement research and development activities on better conditions of incubation and adapted management practices focusing mainly on (1) Effect of early transferring of layer breeders hatching eggs on embryo parameters and hatchability, (2) Comparison of different chicken genotypes in Embryo Physiology, (3) Effects of heat conditioning at d 16 to 18 of incubation or during early broiler rearing on embryo physiology, post-hatch growth performance and heat tolerance, (4) Effect of low albumen quantity on chick embryo and post-hatch parameters, (5) Effects of In ovo-administration of L-carnitine on hatching events and juvenile performance of layer-type chick, (6) Interaction effects of mixing hatching eggs of differential embryo growth trajectory and incubator CO2 concentration on embryo physiological parameters, (7) Effect of delayed feed access on production and blood parameters of layer-type chicks and (8) Induced moulting of layer chickens. © Asian Network for Scientific Information, 2014. [less ▲]

Detailed reference viewed: 18 (3 ULg)
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See detailA model for ternary projective relations between regions
Billen, Roland ULg; Clementini, Eliseo

in Lecture Notes in Computer Science (2004)

Detailed reference viewed: 22 (3 ULg)