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See detailThe Mathematics of Peter L. Hammer (1936-2006): Graphs, Optimization, and Boolean Models
Boros, Endre; Crama, Yves ULg; de Werra, Dominique et al

in Annals of Operations Research (2011), 188

This volume contains a collection of papers published in memory of Peter L. Hammer (1936-2006). Peter Hammer made substantial contributions to several areas of operations research and discrete mathematics ... [more ▼]

This volume contains a collection of papers published in memory of Peter L. Hammer (1936-2006). Peter Hammer made substantial contributions to several areas of operations research and discrete mathematics, including, in particular, mathematical programming (linear and quadratic 0--1 programming, pseudo-Boolean optimization, knapsack problems, etc.), combinatorial optimization (transportation problems, network flows, MAXSAT, simple plant location, etc.), graph theory (special classes of graphs, stability problems, and their applications), data mining and classification (Logical Analysis of Data), and, last but not least, Boolean theory (satisfiability, duality, Horn functions, threshold functions, and their applications). The volume contains 23 contributed papers along these lines. [less ▲]

Detailed reference viewed: 52 (9 ULg)
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See detailThe Mathematics of Peter L. Hammer (1936-2006): Graphs, Optimization, and Boolean Models
Boros, Endre; Crama, Yves ULg; De Werra, Dominique et al

in Boros, Endre; Crama, Yves; De Werra, Dominique (Eds.) et al The Mathematics of Peter L. Hammer (1936-2006): Graphs, Optimization, and Boolean Models (2011)

This volume of the Annals of Operations Research, contains a collection of papers published in memory of Peter L. Hammer. As we recall further down, Peter made substantial contributions to several areas ... [more ▼]

This volume of the Annals of Operations Research, contains a collection of papers published in memory of Peter L. Hammer. As we recall further down, Peter made substantial contributions to several areas of operations research and discretemathematics, including, in particular, mathematical programming (linear and quadratic 0–1 programming, pseudo-Boolean optimization, knapsack problems, etc.), combinatorial optimization (transportation problems, network flows, MAXSAT, simple plant location, etc.), graph theory (special classes of graphs, stability problems, and their applications), data mining and classification (Logical Analysis of Data), and, last but not least, Boolean theory (satisfiability, duality, Horn functions, threshold functions, and their applications). [less ▲]

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See detailMathematics of the total alkalinity–pH equation – pathway to robust and universal solution algorithms: the SolveSAPHE package v1.0.1
Munhoven, Guy ULg

in Geoscientific Model Development [=GMD] (2013), 6

The total alkalinity–pH equation, which relates total alkalinity and pH for a given set of total concentrations of the acid–base systems that contribute to total alkalinity in a given water sample, is ... [more ▼]

The total alkalinity–pH equation, which relates total alkalinity and pH for a given set of total concentrations of the acid–base systems that contribute to total alkalinity in a given water sample, is reviewed and its mathematical properties established. We prove that the equation function is strictly monotone and always has exactly one positive root. Different commonly used approximations are discussed and compared. An original method to derive appropriate initial values for the iterative solution of the cubic polynomial equation based upon carbonate-borate-alkalinity is presented. We then review different methods that have been used to solve the total alkalinity–pH equation, with a main focus on biogeochemical models. The shortcomings and limitations of these methods are made out and discussed. We then present two variants of a new, robust and universally convergent algorithm to solve the total alkalinity–pH equation. This algorithm does not require any a priori knowledge of the solution. SolveSAPHE (Solver Suite for Alkalinity-PH Equations) provides reference implementations of several variants of the new algorithm in Fortran 90, together with new implementations of other, previously published solvers. The new iterative procedure is shown to converge from any starting value to the physical solution. The extra computational cost for the convergence security is only 10–15% compared to the fastest algorithm in our test series. [less ▲]

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See detailMathematics Teaching and Learning Strategies
Crocker, R.; Glickman, V.; Levin, B. et al

Book published by OECD (2010)

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See detailLa mathématique de la Bible
Fredericq, Léon ULg

in Revue de Belgique (1912), (20), 926-930

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See detailMathématique et Codes secrets
Pays, Isabelle ULg

Scientific conference (1993)

Detailed reference viewed: 17 (0 ULg)
See detailMathématique, quelle psychologie pour quel enseignement
Beckers, Jacqueline ULg

in Education : tribune libre (1988), 211

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See detailMathématiques convoquées par le registre graphique au sein du cours de physique
Renkens, Céline; Henry, Valérie ULg

in Actes de la CIEAEM 66 (in press)

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See detailMathématiques Élémentaires -- Condensé
Merciadri, Luca ULg

E-print/Working paper (2009)

This document is a kind of Math. formula's form. It is majoritarly coming from a volonty of classifying these last so they are easily accessible. Firstly, this document was redacted in order to be ... [more ▼]

This document is a kind of Math. formula's form. It is majoritarly coming from a volonty of classifying these last so they are easily accessible. Firstly, this document was redacted in order to be prepared to the engineering studies (at ULg). Many sections have been added, and it is equivalent to a first-year Math. course for a scientific (who is not a mathematician). For this reason, the text has not been very developped, so this document is as short (and quick) as possible, with no need to read unnecessary sentences which would slow the reading. Principal sentences have been written, to make links, because Math. is not only formula's: speaking is a very important way to communicate ideas and to link concepts, especially in Sciences. Indeed, it would not suffice to copy formula's to redact a summary. It is important to translate them to French too, to ensure their understanding. The aim of this summary is not to assemble mathematical ``tricks.'' Indeed, it would not suffice to apply these ready-made ``recipes'' to have success with the exercises: it would be so easy, and why would there be Math. teachers? Only few proves will be made, to lighten the document; however, formula's will be admitted. Many different notations will be used for the same idea, in order to give the habit of the reader to use different notations (e.g. the notation used for the transposed of a matrix). This synthesis is not comprehensive, and does not pretend to be rigourous. Only the essential chapters and sections have been kept. When prerequisites are necessary, they are announced, even if it is sometimes not possible to develop points before others, because, on one hand, they sometimes call each other, and, on the other hand, some notions have volontarily not been given (limits computing, in Calculus). Indeed, many points are supposed to be known: this document consists only in a set of reminds! [less ▲]

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See detailMathieu Crickboom en Espagne
Pirenne, Christophe ULg

Conference (2000, August 25)

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See detailMaths & Manips
Henry, Valérie ULg; Guissard, Marie-France; Lambrecht, Pauline

in Losanges (2010), 7

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See detailMaths & Manips pour le primaire. Favoriser l'apprentissage des grandeurs par des manipulations
Guissard, Marie-France; Henry, Valérie ULg; Vansimpsen, Sylvie et al

Conference (2012, October)

Detailed reference viewed: 26 (4 ULg)
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See detailMaths et manips : introduction de manipulations dans les classes pour favoriser la construction des apprentissages
Henry, Valérie ULg; Lambrecht, Pauline

in Actes du XXXVIIIè colloque de la COPIRELEM (2012)

Cet atelier rend compte d’une recherche actuellement en cours au CREM . Les Math & Manips sont des activités conçues pour provoquer chez les élèves des conflits entre ce qu’ils pensent et ce qu’ils ... [more ▼]

Cet atelier rend compte d’une recherche actuellement en cours au CREM . Les Math & Manips sont des activités conçues pour provoquer chez les élèves des conflits entre ce qu’ils pensent et ce qu’ils découvrent lors des expérimentations. Nous proposons trois séquences d'apprentissage intégrant des manipulations, et destinées à diverses tranches d'âge de l'enseignement élémentaire voire du début du collège. Pour les enfants de 6 à 8 ans, nous travaillons les grandeurs (longueurs, masses, capacités et aires) avec pour objectif de dégager des méthodes efficaces de comparaison sans unité conventionnelle de référence. Pour les élèves de 8 à 10 ans, il s'agit de faire découvrir l'utilité d'un étalon conventionnel en travaillant les capacités. Pour ceux de 10 à 12 ans, nous proposons une séquence visant l'appropriation de la notion de volume. La discussion avec les participants s’oriente principalement sur les concepts mis en place au cours de chaque activité. [less ▲]

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See detailLa matière des mots: Paroles de Dick Annegarn
Demoulin, Laurent ULg

E-print/Working paper (2011)

Comme Dick Annegarn l'indique lui-même, il ne faut pas confondre poésie et texte de chanson. C'est sur cette base qu'il faut lire les textes de Dick Annegarn. Apparaissent alors l'originalité des ... [more ▼]

Comme Dick Annegarn l'indique lui-même, il ne faut pas confondre poésie et texte de chanson. C'est sur cette base qu'il faut lire les textes de Dick Annegarn. Apparaissent alors l'originalité des métaplasmes qui traversent ses "paroles" et la richesse des thèmes qu'il aborde. [less ▲]

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See detailLa matière en suspension de la couche de surface du plateau continental nord-ouest européen. I. Distribution spatiale de la biomasse et du rapport 13C/12C
Dauby, Patrick ULg; Mosora, Fiorentina; Frankignoulle, Michel et al

in Bulletin de la Société Royale des Sciences de Liège (1992), 61

Detailed reference viewed: 6 (1 ULg)
See detailLa matière en suspension de la couche de surface du plateau continental nord-ouest européen. II. Teneur en métaux lourds et transfert dans la chaîne trophique
Bouquegneau, Jean-Marie ULg; Gobert, Sylvie ULg; Frankignoulle, Michel et al

in Bulletin de la Société Royale des Sciences de Liège (1992), 61

Samples of suspended matter (MS) from the North Sea have been analysed for its heavy metal content. Unexpected high levels of copper have been recorded. The Scheldt Estuary reveals to be an important ... [more ▼]

Samples of suspended matter (MS) from the North Sea have been analysed for its heavy metal content. Unexpected high levels of copper have been recorded. The Scheldt Estuary reveals to be an important source of zinc, lead and cadmium for the sea. The transfer of metals from the MS to mussels is low. [less ▲]

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See detailMatière médicale ou doxographie ? Révision de PSI inv. 3011 (MP3 2388)
Marganne, Marie-Hélène ULg

in Roselli, Amneris; Boudon-Millot, Véronique; Garzya, Antonio (Eds.) et al Histoire de la tradition et édition des médecins grecs. Actes du VIe Colloque international Paris, 12-14 avril 2008 (2010)

The Greek literary papyrus PSI inv. 3011 (MP3 2388, A.D. IIIin., unknown provenance) contains the opinions of four medical authorities (Antoninos of Cos, Niceratos of Athens, a Thessalian and a Milesian ... [more ▼]

The Greek literary papyrus PSI inv. 3011 (MP3 2388, A.D. IIIin., unknown provenance) contains the opinions of four medical authorities (Antoninos of Cos, Niceratos of Athens, a Thessalian and a Milesian names of which are lost) about several medicinal products; without mentioning the authors, Dioscorides (A.D. I) quotes these fragments in his De materia medica I 73, 77, 79, 81. [less ▲]

Detailed reference viewed: 52 (14 ULg)