Dissertations / Theses on the topic 'Résolution de problèmes mathématiques'
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Radford, Luis. "Sur la résolution de problèmes dans la classe de mathématiques." Institut franco-ontarien Université Laurentienne, 1996. https://zone.biblio.laurentian.ca/dspace/handle/10219/223.
Full textTardif-Couture, Roxanne. "Résolution de problèmes en mathématiques chez les élèves allophones du primaire." Master's thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/27352.
Full textPincet, Mailly Gaëlle. "Explosion des solutions de problèmes paraboliques sous conditions au bord dynamiques." Littoral, 2001. http://www.theses.fr/2001DUNK0062.
Full textThis thesis deals with blow up phenomena for parabolic problems in a bounded domain under a dissipative dynamical boundary condition. Several problems are studied as well as reaction-diffusion equations and degenerate equations. The aim of this work is to establish the occurence of finite time blow up. So we are interested in various aspects. The comparison of solutions satisfying different boundary conditions as dynamical, Neumann and Dirichlet conditions underscores the monotonically dependance of the blow up time on the dynamical boundary condition and the damping of solutions. Thanks to comparison techniques, energy methods and spectral comparison, we obtain some lower and upper bounds of the blow up time, and sufficient conditions of finite time blow up. On the other hand, we study the asymptotic behaviour of solutions of some non-degenerate problems : we specify the growth order when approaching the blow up time. Then we caracterize the blow up set and we prove that it consists at most of a single point in the one-dimensional case
Abdelmoula, Amine. "Résolution de problèmes inverses en géodésie physique." Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00990849.
Full textMaheux, Dominique. "Résolution par sous-domaines de problèmes linéaires par la méthode optimisée de Schwarz." Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/29499/29499.pdf.
Full textBourgeois, Emmanuel. "Mécanique des milieux poreux en transormation finie : Formulation des problèmes et métjodes de résolution." Marne-la-vallée, ENPC, 1997. https://pastel.archives-ouvertes.fr/tel-00529407.
Full textThomas-Moinet, Mireille. "Descriptions non cartésiennes et résolution de problèmes géométriques sous contraintes." Châtenay-Malabry, Ecole centrale de Paris, 2008. http://www.theses.fr/2008ECAP1100.
Full textThis thesis an effective method to describe and solve in a declarative way geometrical problems defined by constraints. This method of description is omnipresent in CAD to define the shape of objects. To do it, we relied on works already realized in this domain, especially using non-Cartesian approaches. The first chapter makes the synthesis of the state of the art in declarative modelling of a geometric object. The second chapter deals with the chosen modelling : a non-cartesian approach based on a certain metric tensor perturbation. A format equation and an original resolution method are detailed as well as the algorithms implemented. Numerical examples illustrate the performance of the prototype developed. The third chapter proposes to enrich the previous approach using multivectors. New specifications for the user are available and in return, new types of equations must be a generated. Numerical applications of this multi-vectoriel modelling are done. Finally, in the last chapter, it is proposed to extend the tensor model to a model based on geometric algebra. This new tool and a solution allowing to represent objects and constraints with this language, are presented
Djebali, Karima. "Modélisation et résolution de problèmes d'optimisation combinatoire par la programmation mathématique en variables mixtes." Paris, CNAM, 2003. http://www.theses.fr/2003CNAM0470.
Full textLe, Maître Olivier P. "Contribution numérique à la résolution de problèmes d'interaction fluide-structure non linéaires." Le Havre, 1998. http://www.theses.fr/1998LEHA0007.
Full textSkalka, Jean-Michel. "Système interactif d'aide au choix de méthodes pour la résolution de problèmes." Paris 9, 1986. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=1986PA090035.
Full textMorin, Émélie. "La construction des relations sémantiques en résolution de problèmes mathématiques au deuxième cycle du primaire." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/27800/27800.pdf.
Full textArchimbaud, Emma. "Influences de collectifs d'enseignants sur les pratiques individuelles : la résolution de problèmes mathématiques à l'école." Electronic Thesis or Diss., Université Paris Cité, 2024. http://www.theses.fr/2024UNIP7041.
Full textSchools are constantly encouraging teachers to work together, particularly for the purpose of career-long development, beyond the mere transmission of a professional cultural heritage. This is illustrated by the "constellation" in-service training schemes inspired by lesson studies that have recently been introduced in schools, and the new responsibilities of school headmasters, who are required to coordinate and manage educational "teams". By focusing on the teaching of mathematical problem solving in schools, this research aims to document the possible effects of teachers' activities within collectives on the development of their practice. Based on a theoretical framework borrowing from the didactics of mathematics (Robert & Rogalski, 2002) and professional didactics (Pastré, 2011), teachers' practices are analysed for their cognitive and mediative components, from which the construction of pupils' mathematical knowledge stems, but also for their social, institutional and personal dimensions, which underpin the practise of the profession. Three groups were monitored longitudinally in order to document the processes influencing their member's practice : an affinity group made up of beginner teachers ; a group formed for one school year as part of "constellation" in-service training ; and a group formed as part of an "lieu d'éducation associé", a system inspired by collaborative research. An in-depth analysis of the practices of three teachers per group was carried out. The complexity of the mathematical problem-solving activity and the lack of consensus about how it should be taught led to rich exchanges within the groups. The audio and video recordings of meetings between the members and of classroom teaching sessions, together with the self-confrontation and semi-structured interviews conducted, form the corpus of this research. The analyses of teaching practices that have been carried out call upon the notion of "didactic vigilance" developed in mathematics didactics (Butlen et al., 2010) and lead us to question it by relating it to the model of "double regulation of activity" (Leplat, 1997; Rogalski, 2008). These analyses also contribute to uncovering concepts that organise practices, as developed in professional didactics (Pastré, 2011). The results show that the specific features of each collective - its origin, duration, organisational arrangements, etc. - lead to inter-groups variability regarding how practices were influenced. Intra-group contrasts also emerge depending on the teachers' backgrounds, their relationship with mathematics, their conception of the teaching of this subject, etc. Our results also reveal similar trends concerning, for example, the use of different semiotic registers to support pupils' understanding of problems, in particular the increased use of schematisation
Weinberg, Benjamin. "Analyse et résolution approchée de problèmes d'optimisation combinatoire : application au problème de coloration de graphe." Lille 1, 2004. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2004/50376-2004-Weinberg.pdf.
Full textCherfi, Nawal. "Méthodes de résolution hybrides pour les problèmes de type knapsack." Paris 1, 2008. http://www.theses.fr/2008PA010056.
Full textMancel, Catherine. "Modélisation et résolution de problèmes d'optimisation combinatoire issus d'applications spatiales." Toulouse, INSA, 2004. http://www.theses.fr/2004ISAT0011.
Full textIn this work we are concerned with combinatorial optimization problems stemming from space missions planning. These huge problems have some common features concerning the type of data, constraints and criteria to be optimized. We focus on linear programming for modeling and solving these problems, associated to methods for search space simplification, using decomposition or some constraint propagation techniques. We more particularly address two problems. The first one concerns a mission which aims at a scientific investigation of Mars. It consists in planning both communication slots between martian probes and a satellite, and experiments on probes. We use linear integer programming to model and solve to optimality the sub-problem of communication slots planning, and we develop an decision-aid oriented method using constraint propagation for experiments planning. The second problem occurs in the context of the french program of Earth observing with satellites. It consists in selecting and scheduling images taken by one satellite in order to maximize a quality criterion. We give a linear model and we propose a column generation approach, based on the Dantzig-Wolfe decomposition of the model, to calculate upper bounds for this problem and in order to solve it
Larroze-Marracq, Hervé. "Approche socio-cognitive de la résolution de problèmes mathématiques : le rôle du contexte didactique dans les représentations de l'activité et les stratégies de résolution." Bordeaux 2, 1995. http://www.theses.fr/1995BOR21016.
Full textMost cognitive psychology studies do not take into account the social context in with the task is given. Nevertheless, it appears necessary to study cognitive activity regarding contextual parameters as constituent factors of attitude. The present thesis develops a socio cognitive approach that focuses on the didactic system : teacher-pupil-knowledge, and on the socio-communicative, institutional and sociocultural background of school situation. Through interviews with teachers and class observations, a research program carried out among the ten to eleven year age group in primary schools, has made it possible to specify didactic contexts as regard the solving of mathematical problems. The role of these contexts concerning pupils' conceptions and their attitude in experimental situations is studied by comparing the types of answers produced by several classes and by a factor analysis of correspondences. The results emphasize the importance of the didactic context in which pupils usually work. Some solving strategies show that pupils transfer the meaning from the experimental situation to the rules of the class "didactic contract". Thus they try to satisfy their teachers' expectations through written answers to the experimenter. These pupils propose a "compromise solution" that takes into account both a personal processing of the task and the admissibility of the answer
Krzesaj, Michel. "Modélisation et résolution de problèmes d'optimisation non linéaire de grande taille." Lille 1, 1985. http://www.theses.fr/1985LIL10070.
Full textDang, Duc-Cuong. "Méthodes d'extraction pour la résolution de problèmes d'optimisation combinatoire." Compiègne, 2011. http://www.theses.fr/2011COMP1985.
Full textIn this thesis, we focused on the development of heuristic solutions for solving NP-Hard combinatorial optimization problems. Our main idea is to exploit substructures of the problems for which the resolution is polynomial. We introduced a new resolution approach, called extraction method. Based this method and on a dominance property of saturated tours, we proposed two effective algorithms for solving the Team Orienteering Problem (TOP). Using the same principle, we proposed an advanced hybrid metaheuristic for the Maximum Clique Problem. We have also shown the effectiveness of the developed methods such as destruction/ construction heuristic with an industrial application. The application consists of optimizing the process of organizing water meter readings during the transition to the automatic reading technology
Boutin, Sylvie. "Vers l'apprentissage progressif d'un modèle et de stratégies de résolution de problèmes en mathématiques au primaire." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq25283.pdf.
Full textBemmouna, Benyounes. "Étude des conduites métacognitives d'élèves marocains du secondaire en relation avec la résolution de problèmes mathématiques." Doctoral thesis, Université Laval, 1987. http://hdl.handle.net/20.500.11794/29230.
Full textEscaig, Yves. "Décomposition de domaines multiniveaux et traitements distribués pour la résolution de problèmes de grande taille." Compiègne, 1992. http://www.theses.fr/1992COMPD539.
Full textRachelson, Emmanuel. "Problèmes décisionnels de Markov temporels : formalisation et résolution." Toulouse, ISAE, 2009. http://www.theses.fr/2009ESAE0014.
Full textGoudjo, Aurélien. "Singularités d'arêtes en thermique et résolution de quelques problèmes hyperboliques." Nice, 1990. http://www.theses.fr/1990NICE4362.
Full textMonclar, François-Régis. "Résolution coopérative de problèmes : ELICO et son application à la supervision des réseaux électriques." Montpellier 2, 1998. http://www.theses.fr/1998MON20036.
Full textLasalle, Francis. "Une métaheuristique de résolution de problèmes stochastiques de localisation-transport." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26159/26159.pdf.
Full textThis thesis studies a Stochastic Location-Transportation Problem (SLTP) characterized by multiple transportation options, multiple demand periods and a stochastic stationary demand. We consider the determination of the number and location of the depots required to satisfy a set of customer’s demands, and the mission of these depots in terms of the subset of customers they must supply. The problem is formulated as a stochastic program with recourse, and a hierarchical heuristic solution approach is proposed. It incorporates a Tabu search procedure, an approximate route length formula, and a modified Clarke and Wright procedure. Three neighbourhood exploration strategies are proposed and compared with extensive experiments based on realistic problems.
Jarray, Fethi. "Résolution de problèmes de tomographie discrète : application à la planification du personnel." Paris, CNAM, 2004. http://www.theses.fr/2004CNAM0481.
Full textThis thesis consists in developing the study of discrete tomography problems. My contributions have both theoretic and experimental aspects which are illustrated by applications in workforce scheduling and in image reconstructing. - Theoric contributions. We have determined the complexity and proposed polynomial algorithms to solve general cases of the following problems : Tiling with dominoes and bars. Reconstructing binary matrices under adjacency constraints. Reconstructing binary matrices under alternate periodicity constraints. Reconstructing colored tables. - Experimental contributions. We have proposed an original approach to solve the problem of days-off scheduling with 2-3 or 3-4 consecutive days off per week. . We have proposed an heuristic to help in reconstructing grey-scale images. Finally, we open some theoretic perspectives to study other discrete tomography problems
Chevenet, François. "Un environnement coopératif de résolution de problèmes pour l'analyse statistique en écologie." Lyon 1, 1994. http://www.theses.fr/1994LYO10074.
Full textMatalliotaki, Eirini. "Les pratiques graphiques à l'école maternelle dans un contexte de résolution de problèmes." Paris 5, 2007. http://www.theses.fr/2007PA05H107.
Full textThe reported research focuses on the functions of graphical representations in a context of problem solving by young children (5 to 6,6 yrs old). A study based on 23 mathematical exercises utilising drawings, taken from books for chiidren ofupper kindergarten-age, shows that the inferential function of drawjngs was very littie exploited, contrary to the referential one. Two studies have been carried out with 55 children of medium and upper kindergartenage; One that evaluates the children’s capacity to utilise quantitative notations after being requested to make a calculation (Dénoréco), and another that examines the inference of quantities by the use of quotitive division when initial quantity information is presented verbally and subsequently graphically. The results show that a great part of the chiidren were capable ofutilising efficiently the external graphical representations provided to them, When the exercises were represented graphically, the chiidren were able to demonstrate resolution techniques with gestures, contrary to the verbal representation case, where very few resolution strategies could be clarified. This thesis on its whole provides arguments supporting the early use of external graphical representation within the school-learning frame
Lagoutière, Frédéric. "Modélisation mathématique et résolution numérique de problèmes de fluides à plusieurs constituants." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2000. http://tel.archives-ouvertes.fr/tel-00001385.
Full textGuillot, Jérémy. "Résolution exacte de problèmes de couverture par arborescences sous contraintes de capacité." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0395/document.
Full textIn this document, we study two districting problems and propose several exact methods, based on Dantzig-Wolfe decomposition and column generation, to solve them. For each model, we compare exact approaches based either on compact formulations or on extended formulations obtained using Dantzig-Wolfe decomposition. The first type of model that we propose defines the objective function in a p-median problem fashion. Regarding the methods used to solve that kind of model, we emphasize accelerating the convergence of the column generation algorithm by designing constraint aggregation techniques in order to reduce the degeneracy in the simplex algorithm. Numerical experiments show that this constraint aggregation method indeed reduces the proportion of degenerated iterations. However, it is not enough to speed up the branch-and-price algorithm. Choosing to tackle the problem through either a compact formulation or an extended formulation depends on the structure of the instances to solve. The second type of model formulates the objective function in a way quite similar to that of p-centre problems. Using such an objective function induces complex column generation subproblems. We focus on designing branch-and-bound and dynamic programming algorithms in order to solve them efficiently. Experiments show that the branch-and-price approach surpasses any proposed method based on compact formulations of the problem
Freitas-Santos, Alfranci. "Extension de la méthode des perturbations singulières forcées aux problèmes d'optimisation de trajectoires avec multiclassement : résolution de problèmes aux conditions finales sur les variables rapides." Toulouse, ENSAE, 1985. http://www.theses.fr/1985ESAE0015.
Full textDel, Moral Pierre. "Résolution particulaire des problèmes d'estimation et d'optimisation non-linéaires." Toulouse 3, 1994. http://www.theses.fr/1994TOU30075.
Full textMartinon, Pierre. "Résolution numérique de problèmes de contrôle optimal par une méthode homotopique simpliciale." Phd thesis, Toulouse, INPT, 2005. https://hal.science/tel-04595502.
Full textWe study deals with the numerical resolution of optimal control problems with a low regularity. We primarily use indirect methods, which are both fast and accurate, but suffer from a great sensitiveness to the initialization. This difficulty leads us to introduce a continuation approach, in which we start from a related, but easier to solve problem. The "path following" between the two problems is here implemented with a simplicial method. We first study an orbital transfer problem with payload maximization, then two singular arcs problems. The future perspectives related to this work include in particular the study of state constraints problems, which are difficult to solve with indirect methods. Also, we would like to compare this approach with direct methods, which imply total or partial discretization of the problem
Martinon, Pierre. "Résolution numérique de problèmes de contrôle optimal par une méthode homotopique simpliciale." Phd thesis, Toulouse, INPT, 2005. http://oatao.univ-toulouse.fr/7406/1/martinon.pdf.
Full textBoukebab, Kaouthar. "Etude et résolution de problèmes d'ordonnancement d'opérations d'évacuation." Thesis, Tours, 2015. http://www.theses.fr/2015TOUR4023/document.
Full textThe work presented in this thesis, which is a part of the Franco-German project DSS_Evac_Logistic, aims at proposing methods to calculate macroscopic evacuation plans for mid-size towns after a tremendous disaster. Two evacuation problems have been tackled in this thesis : the bus evacuation problem and bus-and-vehicle evacuation problem. The bus evacuation problem aims at calculating an evacuation plan to relocate evacuees outside the endangered area. In this thesis, we consider three versions of the bus evacuation problem. The first one is a monocriterion problem, where the objective is to minimize the maximum evacuation time. In order to guarantee the safety of evacuees, we have considered a bicriteria problem, which is a generalization of the monocriterion version, in which we take into consideration the risk exposure of the evacuees. Consequently, the bicriteria problem is solved by minimizing the total evacuation time and the risk. The third version is a bicriteria robust version because most of the planning data is subject to uncertainty. The goal is to minimize both the evacuation time and the vulnerability of the schedule that is subject to different evacuation circumstances. To solve all the versions of the bus evacuation problem, we have developed exact solutions based on mathematical formulation to address small instances and heuristic solutions to deal with larger instances
Cocquebert, Cédric. "Méthodes de type "Waveform-FAC" pour la résolution numérique de problèmes paraboliques." Aix-Marseille 1, 1997. http://www.theses.fr/1997AIX11032.
Full textEl, Khoukhi Fatima. "Métaheuristiques hybrides pour la résolution de problèmes d'ordonnancement de type Job Shop." Le Havre, 2009. http://www.theses.fr/2009LEHA0023.
Full textIn most real shop floor, improving the coordination and the planning of the production with respect to the logistic activities, namely resources : machines and material handling equipments, became a great necessity for the lowering of costs and reducing of lead-times delivery. The present thesis is split into four parts. The first one is a survey of the scheduling problems ; the emphasis is on the Job Shop environments. In the second part, we provide a more detailed study of these environments : problematic, state of the art, modelling and methods of resolution. As part of the internal logistics of the production facilities in Job Shop Scheduling Problem, the third part is devoted to showing two problems, the Job Shop Scheduling Problem with transportationfor just-in-time production as well as the flexible Job Shop Scheduling problem with machines availability constraints. Finally, the last part addresses the aircraft landing problem that we formulated as a Job Shop problem. In the various study cases previously cited, our work revolves around a systematic study based on three fundamental processes, a mathematical and/or graphical formulations, and then an approach for resolution optimization based on hybrid metaheuristics, finally a validation of the results by numerical simulations. The objective is to develop dynamic scheduling systems to resolve these NP-hard problems
Lefèvre, Frédéric. "Résolution de problèmes inverses : estimation de sources de chaleur non uniformément réparties." Aix-Marseille 1, 2001. http://www.theses.fr/2001AIX11063.
Full textNguala, Jean. "Multiprésentation de problèmes comme dispositif de ré-apprentissage au cycle 3 de l'école primaire : mise en place, portée et limites." Paris 7, 2009. http://www.theses.fr/2009PA070042.
Full textOur global question is that of helping elementary school students who still have difficulties in problem solving on multiplicative structures after the teacher's instruction. It implies a reflection on a possible additional teaching which would not just be of the same kind as the previous one. In order to fulfil our purpose, we designed and brought into play alternative devices making three experiments necessary. In the first one we wanted to test, with eldest students of elementary school, the local relevance of the multipresentation of problems, a helping device originally designed and experimented by Julo (1995) at junior high school level. Then we got an interest in integrating multi-presentation in a longer period with a rather big sample of student, making use of complementary individual interviews. Our theoretical framework also includes Brousseau 's Theory of Didactical Situations, Margolinas ' structuration of the milieu as well as Vergnaud's works
Cadet, Élysée Robert. "La résolution de problèmes arithmétiques verbaux au primaire : microanalyse de la dialectique sujet/matériel." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30915.
Full textAl, Mikdad Mazen. "Statique et dynamique des poutres en grande rotation et résolution des problèmes d'instabilité non linéaire." Compiègne, 1998. http://www.theses.fr/1998COMP1112.
Full textLetournel, Marc. "Approches duales dans la résolution de problèmes stochastiques." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00938751.
Full textChabot, Thomas. "Résolution des problèmes de tournées de véhicules pour le transport des échantillons biomédicaux au Québec." Master's thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26365.
Full textPerron, Sébastien. "Résolution avec la méthode des volumes finis dirigés de l'équation de la chaleur pour des problèmes diphasiques en 1D et 2D." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq33790.pdf.
Full textDelfini, Pierre. "Méthodes finitaires appliquées à la résolution de certains problèmes d'évolution." Nice, 1990. http://www.theses.fr/1990NICE4369.
Full textHaouari, Mohamed. "Les problèmes de tournées avec fenêtres de temps, modélisation et algorithmes de résolution exacte et heuristique." Châtenay-Malabry, Ecole centrale de Paris, 1991. http://www.theses.fr/1991ECAP0183.
Full textGaraix, Thierry. "Etude et résolution exacte de problèmes de transport à la demande avec qualité de service." Avignon, 2007. http://tel.archives-ouvertes.fr/docs/00/53/48/94/PDF/thesegaraix.pdf.
Full textIn this thesis, we address routing problems deriving from on-demand transport systems (ODT). Such systems, combining taxi flexibility with public transport system advantages (grouping, price) seem well suited to the new mobility needs. We define and classify a large set of quality of service criteria. We select three of them among the most representative : the total distance travelled, the vehicle occupancy rate and the passenger wasted-time. We propose branch-and-price solution schemes for the three cases, under the assumption that demands are known in advance. The original quality of service objectives introduce non-standard features into the vehicle routing model, namely a multigraph and a fractional objective function, therefore inducing non-standard algorithms. This work is part of a multidisciplinary project managed by geographers. The implementation of an operational ODT in the Doubs Central area (France) is used as a testing ground for experimentations. For the practical use of this system, we propose an insertion heuristic in addition to the branch-and-price algorithm. A geomatic analysis of the interactions between quality of service criteria and the geographical area is carried out with a Geographic Information System, with a special focus on route shapes and route sinuosity measures
El, Maliki Abderrahman. "Résolution de problèmes aux limites à l'aide de méthodes itératives hiérarchiques à préconditionneur variable." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24692/24692.pdf.
Full textBouallagui, Sarra. "Techniques d'optimisation déterministe et stochastique pour la résolution de problèmes difficiles en cryptologie." Phd thesis, INSA de Rouen, 2010. http://tel.archives-ouvertes.fr/tel-00557912.
Full textMartin, Bruno. "Diagnostic comportemental et cognitif des erreurs dans la résolution de problèmes arithmétiques." Thesis, Paris 8, 2016. http://www.theses.fr/2016PA080084/document.
Full textResearch in psychology and in Intelligent Learning Environment (ILE) share the goal of a better understanding of the subject, more precisely in its modeling with strong educative perspectives. This Ph.D. Thesis, intrinsically interdisciplinary, aims to strengthen the link between experimental psychology and ILEs, especially in the domain of arithmetical word problem solving (WP) while addressing the more general issue of the integration of cognitive models in the ILEs. In the first part, a behavioral diagnostic module is presented, with a test-based methodology to assess its relevance in the context of experimental psychology studies. A better understanding of word problem solving behavior is a prerequisite of the development of any cognitive diagnostic module. This is the core of the second part, which presents the cognitive models put in place and compare their productions with human data. It has been shown that a large part of WP solving behavior can be explained via the light of keyword-based strategy and the alteration of the meaning of textual propositions. In the last part, in order to address the issue of individual cognitive diagnosis, a metric quantifying the fit of the diagnosis has been developed. A software has also been developed, allowing to build and test simple cognitive models over data coming from ILEs. This metric and this software have been used concretely within the context of an experimentation involving word problem solving