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See detailA general framework and an R package for the detection of dichotomous differential item functioning
Magis, David ULg; Béland, Sébastien; Tuerlinckx, Francis et al

in Behavior Research Methods (2010), 42

Differential item functioning (DIF) is an important issue of interest in psychometrics and educational measurement. Several methods have been proposed in the last decades to identify items that function ... [more ▼]

Differential item functioning (DIF) is an important issue of interest in psychometrics and educational measurement. Several methods have been proposed in the last decades to identify items that function differently between two (or more) groups of examinees. Starting from a framework for classifying DIF detection methods and from a comparative overview of the most traditional methods, an R package for nine methods, called difR, is presented. The commands and options are briefly described, and the package is illustrated through the analysis of a data set on verbal aggression. [less ▲]

Detailed reference viewed: 47 (4 ULg)
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See detailGeneral Framework for Describing and Evaluating Suboptimum Techniques for STAP
De grève, Sébastien; Lapierre, Fabian D.; Verly, Jacques ULg

Conference (2003)

Detailed reference viewed: 6 (0 ULg)
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See detailA general framework for power system transient stability control
Pavella, Mania ULg; Ernst, Damien ULg; Ruiz-Vega, Daniel

in IEEE Power Engineering Society Letters (1999), 19(10), 45-46

Detailed reference viewed: 47 (6 ULg)
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See detailA general functional characterization of the microlocal singularities
Bastin, Françoise ULg; Laubin, Pascal

in Journal of Mathematical Sciences, The University of Tokyo (1995), 2(1), 155-164

Detailed reference viewed: 11 (1 ULg)
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See detailGeneral guidelines for planning and conducting round robins in EGOLF
Dumont, Fabien ULg; Steen-Hansen, Anne

Report (2014)

Conducting round robin exercises is one of EGOLF's key activities. A round robin exercise is a necessary tool to improve and maintain a good level of quality within EGOLF. A good plan of the round robin ... [more ▼]

Conducting round robin exercises is one of EGOLF's key activities. A round robin exercise is a necessary tool to improve and maintain a good level of quality within EGOLF. A good plan of the round robin exercise will make the work easier, and will help avoid problems and misunderstandings. The intention is to give general guidelines on how to organize round robins in a standardized way within EGOLF. The document is divided into the following parts - Preparing and planning the round robin - Testing - Data analysis and reporting These guidelines comply with the ISO 5725 prescriptions. [less ▲]

Detailed reference viewed: 33 (5 ULg)
See detailGeneral issues relating to pupil achievement
de Landsheere, Gilbert ULg

in Weston, Penelope B. (Ed.) Assessment of pupil achievement : motivation and school success : report of the Educational Research Workshop held in Liège 12-15 September 1989 (1991)

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See detailA general lot-sizing problem in a closed-loop supply chain with returns
Amand, Guillaume ULg; Arda, Yasemin ULg

Conference (2013, February 08)

We consider a stochastic version of the multi-product multi-level capacitated lotsizing and scheduling problem with sequence-dependent setups. A bottler needs to determine its production schedule over a ... [more ▼]

We consider a stochastic version of the multi-product multi-level capacitated lotsizing and scheduling problem with sequence-dependent setups. A bottler needs to determine its production schedule over a finite horizon in order to satisfy a deterministic demand. The raw materials are supplied through two different sources: uncapacitated reserves of new bottles and the uncertain returns of used bottles. We present results for the single-item case. [less ▲]

Detailed reference viewed: 109 (8 ULg)
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See detailA General Lotsizing and Scheduling Problem with Stochastic Product Returns
Amand, Guillaume ULg; Arda, Yasemin ULg

Conference (2014, July 15)

We consider a multi-product capacitated lotsizing and scheduling problem with sequence-dependent setups and stochastic product returns. The returned products accumulate in an input inventory and can be ... [more ▼]

We consider a multi-product capacitated lotsizing and scheduling problem with sequence-dependent setups and stochastic product returns. The returned products accumulate in an input inventory and can be sold as new items after a remanufacturing process. The deterministic demand of end items can also be satisfied through a manufacturing process that is fed by an unlimited source of raw materials. An approximate dynamic algorithm is developed to solve both single-item and multi-items cases. [less ▲]

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See detailGeneral lotsizing in a closed-loop supply chain with uncertain returns
Amand, Guillaume ULg; Arda, Yasemin ULg

Conference (2013, July 03)

We consider a multi-product capacitated lotsizing and scheduling prob- lem with sequence-dependent setups and stochastic product returns. The returned products accumulate in an input inventory and can be ... [more ▼]

We consider a multi-product capacitated lotsizing and scheduling prob- lem with sequence-dependent setups and stochastic product returns. The returned products accumulate in an input inventory and can be sold as new items after a remanufacturing process. The determinis- tic demand of end items can also be satisfied through a manufacturing process that is fed by an unlimited source of raw materials. An ap- proximate dynamic algorithm is developed to solve both single-item and multi-items cases. [less ▲]

Detailed reference viewed: 43 (5 ULg)
See detailA general lotsizing problem with uncertain product returns
Amand, Guillaume ULg; Arda, Yasemin ULg

Conference (2015, July 15)

We consider a single-stage system that produces a range of final products. The demands of the final products are supposed deterministic over a finite planning horizon. Each unit of demand has to be ... [more ▼]

We consider a single-stage system that produces a range of final products. The demands of the final products are supposed deterministic over a finite planning horizon. Each unit of demand has to be fulfilled at the period that it appears using either the production of that period or the inventory carried over from the earlier periods. The final products can either be manufactured using purchased materials or remanufactured using remanufacturable returned products. For each final product, the manufactured and remanufactured items are perfectly substitutable. The returned products are collected at the start of each period but the quantities obtained are unknown until the collection. The return inventories accumulate as remanufacturable returned items are received. The manufacturing and remanufacturing processes of all the final products are executed on a same machine. In each time period, multiple products can be processed but the total production quantity is limited by the time availability of the machine during this period. Whenever production is switched from one final product to another, a sequence dependent setup cost is incurred and a sequence depen- dent setup time is consumed from the available time capacity. Different stochastic combinatorial optimization methods as well as dynamic programming methods are proposed, tested and compared. [less ▲]

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See detailGeneral Method for Labeling siRNA by Click Chemistry with Fluorine-18 for the Purpose of PET Imaging
Mercier, Frédéric; Paris, Jérôme ULg; Kaisin, Geoffroy ULg et al

in Bioconjugate Chemistry (2011), 22(1), 108-114

Detailed reference viewed: 54 (18 ULg)
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See detailA General Method for the Analysis and the Logical Generation of Discrete Mathematical Systems in Programmable Logical Controller
Dubois, Daniel ULg; Mascia, Antonio

in Trappl, Robert (Ed.) CYBERNETICS AND SYSTEMS 2010 (2010)

This paper deals with a general method for the analysis and the logical generation of discrete systems in Programmable Logical Controller (PLC). The Boolean operators are implemented with a generic and ... [more ▼]

This paper deals with a general method for the analysis and the logical generation of discrete systems in Programmable Logical Controller (PLC). The Boolean operators are implemented with a generic and unique algebraic model as event-dependent discrete equations, which can be executed in a sequential order. With this method, a generator of sequential logical tables can be designed, simulated and executed for implementing discrete dynamical systems. The purpose of this research is to design self-rewrite operating systems in PLC, which automatically checks the logic of the implemented discrete dynamical systems, for simulation and execution of sequential operations. [less ▲]

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See detailA general method for the chemical synthesis of gamma-P-32-labeled or unlabeled nucleoside 5 '-triphosphates and thiamine triphosphate
Bettendorff, Lucien ULg; Nghiem, Hoang O; Wins, Pierre et al

in Analytical Biochemistry (2003), 322(2), 190-197

Several methods for the chemical synthesis of gamma-P-32-labeled and unlabeled nucleoside 5'-triphosphates and thiamine triphosphate (ThTP) have been described. They often proved unsatisfactory because of ... [more ▼]

Several methods for the chemical synthesis of gamma-P-32-labeled and unlabeled nucleoside 5'-triphosphates and thiamine triphosphate (ThTP) have been described. They often proved unsatisfactory because of low yield, requirement for anhydrous solvents, procedures involving several steps or insufficient specific radioactivity of the labeled triphosphate. In the method described here, all these drawbacks are avoided. The synthesis of [gamma-P-32]TbTP was carried out in one step, using 1,3-dicyclohexyl carbodiimide as condensing agent for thiamine diphosphate and phosphoric acid in a dimethyl sulfoxide/pyridine solvent mixture. Anhydrous solvents were not required and the yield reached 90%. After purification, [gamma-P-32]ThTP had a specific radioactivity of 11 Ci/mmol and was suitable for protein phosphorylation. The method can also be used for the synthesis Of [gamma-P-32]ATP of the desired specific radioactivity. It can easily be applied to the synthesis of unlabeled ThTP or ribo- and deoxyribonucleoside 5'-triphosphates. In the latter case, inexpensive 5'-monophosphate precursors can be used as reactants in a 20-fold excess of phosphoric acid. Deoxyribonucleoside 5'-triphosphates were obtained in 6 h with a yield of at least 70%. After purification, the nucleotides were found to be suitable substrates for Taq polymerase during polymerase chain reaction cycling. Our method can easily be scaled up for industrial synthesis of a variety of labeled and unlabeled triphosphoric derivatives from their mono- or diphosphate precursors. (C) 2003 Elsevier Inc. All rights reserved. [less ▲]

Detailed reference viewed: 68 (2 ULg)
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See detailA General Method for the Frequency Domain FE Modelling of Rotating Electromagnetic Devices
Gyselinck, J.; Vandevelde, L.; Dular, Patrick ULg et al

in IEEE Transactions on Magnetics (2003), 39(3), 1147--1150

Detailed reference viewed: 22 (3 ULg)
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See detailA General Method for the Harmonic Balance Finite Element Modelling of Rotating Electromagnetic Devices
Gyselinck, J.; Vandevelde, L.; Dular, Patrick ULg et al

in Proceedings of the 10th IEEE Conference on Electromagnetic Field Computation (CEFC'2002) (2002)

Detailed reference viewed: 10 (3 ULg)
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See detailA general method to compute source fields without defining cuts nor using Biot-Savart
Henrotte, F.; Dular, Patrick ULg; Geuzaine, Christophe ULg et al

in Proceedings of the 4th International Workshop on Electric and Magnetic Fields, EMF 1998 (1998)

Detailed reference viewed: 23 (1 ULg)
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See detailA general methodology for optimal load management with distributed renewable energy generation and storage in residential housing
Georges, Emeline ULg; Braun, James; Lemort, Vincent ULg

in Journal of Building Performance Simulation [=JBPS] (2016)

In the US, buildings represent around 40% of the primary energy consumption and 74% of the electrical energy consumption [U.S. Department of Energy (DOE). 2012. 2011 Buildings Energy Data Book. Energy ... [more ▼]

In the US, buildings represent around 40% of the primary energy consumption and 74% of the electrical energy consumption [U.S. Department of Energy (DOE). 2012. 2011 Buildings Energy Data Book. Energy Efficiency & Renewable Energy]. Incentives to promote the installation of on-site renewable energy sources have emerged in different states, including net metering programmes. The fast spread of such distributed power generation represents additional challenges for the management of the electricity grid and has led to increased interest in smart control of building loads and demand response programmes. This paper presents a general methodology for assessing opportunities associated with optimal load management in response to evolving utility incentives for residential buildings that employ renewable energy sources and energy storage. An optimal control problem is formulated for manipulating thermostatically controlled domestic loads and energy storage in response to the availability of renewable energy generation and utility net metering incentives. The methodology is demonstrated for a typical American house built in the 1990s and equipped with a single-speed air-to-air heat pump, an electric water heater and photovoltaic (PV) collectors. The additional potential associated with utilizing electrical batteries is also considered. Load matching performance for on-site renewable energy generation is characterized in terms of percentage of the electricity production consumed on-site and the proportion of the demand covered. For the purpose of assessing potential, simulations were performed assuming perfect predictions of the electrical load profiles. The method also allows determination of the optimal size of PV systems for a given net metering programme. Results of the case study showed significant benefits associated with control optimization including an increase of load matching between 3% and 28%, with the improvement dependent on the net metering tariff and available storage capacity. The estimated cost savings for the consumer ranged from 6.4% to 27.5% compared to no optimization with a unitary buy-back ratio, depending on the available storage capacity. Related reduction in CO2 emissions were between 11% and 46%. Optimal load management of the home thermal systems allowed an increase in the optimal size of the PV system in the range of 13–21%. [less ▲]

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See detailGeneral MSSM signatures at the LHC with and without R-parity
Dreiner, H. K.; Staub, F.; Vicente, Avelino ULg et al

in Physical Review. D, Particles, Fields, Gravitation, and Cosmology (2012), 86

Detailed reference viewed: 11 (0 ULg)