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Ehrlé, Nathalie. "Traitement temporel de l'information auditive et temporal". Reims, 1998. http://www.theses.fr/1998REIML009.
Pełny tekst źródłaMeyer, Thierry. "Saillance de l'environnement et traitement de l'information". Paris 10, 1986. http://www.theses.fr/1986PA100005.
Pełny tekst źródłaBaudouin, Alexia. "Vieillissement cognitif et traitement de l'information temporelle". Tours, 2004. http://www.theses.fr/2004TOUR2008.
Pełny tekst źródłaModels of temporal information processing assume that time estimation depends on a clock mechanism as well as on attention and memory processes. This study examined the relations between age-related temporal performances and both component of psychological time models : slowing down of internal clock, atttention and memory decreases accompanying aging, and general factors of aging. Three experiments are reported comparing young and older adults performances of duration production and reproduction. Results allows us to clarify differential implication of temporal processes in the two tasks and to show the role of executive dysfunctioning and processing speed slowing in age related time estimation
Meyer, Thierry. "Saillance de l'environnement et traitement de l'information". Lille 3 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb375998295.
Pełny tekst źródłaGUILLAUME, DAMIEN. "Recherche, extraction et traitement distribues de l'information en astronomie". Université Louis Pasteur (Strasbourg) (1971-2008), 2000. http://www.theses.fr/2000STR13018.
Pełny tekst źródłaJuhel, Jacques. "Traitement de l'information visuelle et aptitudes spatiales : approche cognitive et différentielle". Rennes 2, 1988. http://www.theses.fr/1988REN20012.
Pełny tekst źródłaIn the first part of this work, we draw the typical stages of the visual information processing and try to show the part of the "encoding opportunities" in the visualization of the corresponding mental representation. We therefore examine the limited capacity of short term visual memory and visual code's sensitivity to presentation's type (successive vs simultaneous). A set of experimental studies using the visual comparison's paradigm are described in the second chapter; they inspect independence and complementarity of internal codes, activated in the post-iconic processing of information. We develop the problem of knowledge representation (propositional vs analogic) and study it experimentally by means of different paradigm (visual synthesis and mental transformation). In the third chapter of this thesis we make out the assessment of the factorial studies on spatial abilities: promising prospects of cognitive and differential approach are recalled. In this context, the last experiment try to understand the differences between individual performance measured by psychometric tests and the one reflected by visual memory tasks
Juhel, Jacques. "Traitement de l'information visuelle et aptitudes spatiales approche cognitive et différentielle /". Lille 3 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37614580d.
Pełny tekst źródłaMekinda, Mengue Leonce. "Mécanismes de cache, traitement et diffusion de l'information dans les réseaux centrés sur l'information (ICN)". Thesis, Paris, ENST, 2016. http://www.theses.fr/2016ENST0075/document.
Pełny tekst źródłaThis thesis investigates how making content caching and forwarding latency-aware can improve data delivery performance in Information-Centric Networks (ICN). We introduce a new mechanism that leverages retrieval time observations to decide whether to store an object in a network cache, based on the expected delivery time improvement. We demonstrate that our distributed latency-aware caching mechanism, LAC+, outperforms state of the art proposals and results in a reduction of the content mean delivery time and standard deviation of LRU caches by up to 60%, along with a fast convergence to these figures. In a second phase, we conjointly optimize the caching function and the multipath request forwarding strategies. To this purpose, we introduce the mixed forwarding strategy LB-Perf, directing the most popular content towards the same next hops to foster egress caches convergence, while load-balancing the others. Third, we address ICN fairness to contents. We show that traditional ICN caching, which favors the most popular objects, does not prevent the network from being globally fair, content-wise. The incidence of our findings comforts the ICN community momentum to improve LFU cache management policy and its approximations. We demonstrate that in-network caching leads to content-wise fair network capacity sharing as long as bandwidth sharing is content-wise fair. Finally, we contribute to the research effort aiming to help ICN Forwarding Information Base scale when confronted to the huge IoT era’s namespace.We propose AFFORD, a novel view on routing in named-data networking that combines machine learning and stochastic forwarding
Mekinda, Mengue Leonce. "Mécanismes de cache, traitement et diffusion de l'information dans les réseaux centrés sur l'information (ICN)". Electronic Thesis or Diss., Paris, ENST, 2016. http://www.theses.fr/2016ENST0075.
Pełny tekst źródłaThis thesis investigates how making content caching and forwarding latency-aware can improve data delivery performance in Information-Centric Networks (ICN). We introduce a new mechanism that leverages retrieval time observations to decide whether to store an object in a network cache, based on the expected delivery time improvement. We demonstrate that our distributed latency-aware caching mechanism, LAC+, outperforms state of the art proposals and results in a reduction of the content mean delivery time and standard deviation of LRU caches by up to 60%, along with a fast convergence to these figures. In a second phase, we conjointly optimize the caching function and the multipath request forwarding strategies. To this purpose, we introduce the mixed forwarding strategy LB-Perf, directing the most popular content towards the same next hops to foster egress caches convergence, while load-balancing the others. Third, we address ICN fairness to contents. We show that traditional ICN caching, which favors the most popular objects, does not prevent the network from being globally fair, content-wise. The incidence of our findings comforts the ICN community momentum to improve LFU cache management policy and its approximations. We demonstrate that in-network caching leads to content-wise fair network capacity sharing as long as bandwidth sharing is content-wise fair. Finally, we contribute to the research effort aiming to help ICN Forwarding Information Base scale when confronted to the huge IoT era’s namespace.We propose AFFORD, a novel view on routing in named-data networking that combines machine learning and stochastic forwarding
Chartier, Daniel. "Traitement analogique et traitement propositionnel des informations dans le raisonnement transitif". Paris 5, 1990. http://www.theses.fr/1990PA05H045.
Pełny tekst źródłaA review of the literature about the development of transitive reasoning in children and the role played by analogical representation in linear syllogism led to the design of an experimental paradigm intended to demonstrate the existence, in this type of reasoning, of two information processing modes, diversely prompted according to premisses learning procedure and or individual preferences of the subjects
Raterron, Jean-Michel. "Réalisation d'un spectrographe acousto-optique : analyse et traitement de l'information". Paris 11, 1985. http://www.theses.fr/1985PA112006.
Pełny tekst źródłaThe work described in this thesis relates the analysis, design and construction of an acousto-optical spectrometer (A. O. S. ) at the Meudon observatory. This instrument developed for decameter wave length observations ([10 - 180] MHz), is designed to be very compact and based on usual standard components. On principle, the acousto-optical interaction gives the instantaneous spectral power density of the signal as a distribution of light intensity. A high performance CCD electronic camera was made to detect and sample the optical signal. A microcomputer checks and manages the data acquisition. The spectrometer has a bandwidth of 30 MHz with an effective resolution of 50 kHz and a dynamic range higher than 30 dB. The temporal resolution is fixed by a microcomputer which performs real time data processing. This instrument is working since summer 1984, and the first results are presented
Batton-Hubert, Mireille. "Modèles et Heuristiques pour le traitement spatio-temporel de l'information environnementale". Habilitation à diriger des recherches, Université Jean Monnet - Saint-Etienne, 2006. http://tel.archives-ouvertes.fr/tel-00362418.
Pełny tekst źródła- volet 1 : Structuration et Modélisation de l'information spatialisée environnementale - aide à la décision en hydrodynamique et Ressources en eaux
- volet 2 : Analyse espace - temps de l'information environnementale
- volet 3 : Justification d'heuristique de la composante espace - temps de l'information environnementale Un rapport annexe contient le syllabus:
- des activités d'enseignement et de responsabilités diverses assurées,
- des thématiques de recherche abordées avec leurs principaux résultats issues :
- des activités d'encadrement doctoral
- de la réalisation de projets de recherche ( académique et appliquée )
- des publications réalisées à ce jour.
Ce document est établi en vue de l'obtention de l'Habilitation à Diriger des Recherches.
Gagnon, Jean-François. "L'interférence et le traitement de l'information visuelle chez les personnes schizophrènes". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0001/MQ38088.pdf.
Pełny tekst źródłaLebel, Jessica. "Le traitement de l'information et la mésestimation du sommeil dans l'insomnie". Master's thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/28060.
Pełny tekst źródłaInsomnia is a psychological disorder which diagnosis is based on subjective data. However, some individuals suffering from insomnia report much greater difficulties than what is objectively observed. These individuals suffer from paradoxical insomnia, where sleep is mistaken for wake, leading to a poor perception of sleep. Models of insomnia link this erroneous perception with, among others, cortical hyperactivation during the night, which explains the retrospective impression of having slept poorly. The objectives of the present study are 1) to clarify the relationship between the treatment of information and the misperception of sleep for the time spent awake after sleep onset and 2) to validate the use of a new index to quantify misperception. Participants, 50 good sleepers, 69 individuals suffering from insomnia (psychophysiological: 40; paradoxical: 29) slept 4 nights in the laboratory. The first night served as a screening and adaptation to the laboratory context. Nights 2 and 3 were used for classification in one of the three groups of sleepers. The event-related potentials protocol was administered on Night 4. Sleep diaries for laboratory nights allowed comparisons of subjective and objective data so to create the misperception index to separate subjects in two groups according to the degree of misperception (moderate or strong). As expected, information processing was more important with rare and intrusive tones. Individuals suffering from paradoxical insomnia presented a larger P2 amplitude than other types of sleepers, P2 being especially large at the beginning of the night. Individuals suffering from paradoxical insomnia who were classified in the moderate misperception group presented had increased information processing compared with other groups of sleepers. The study validates the use of the misperception index for the time spent awake after sleep onset and shows the importance of using an index over several nights rather than just one.
BENHAIM, PATRICK. "Troubles cognitifs et traitement de l'information dans la depression : etude experimentale". Aix-Marseille 2, 1993. http://www.theses.fr/1993AIX20952.
Pełny tekst źródłaFoucher, Samuel. "Analyse multiéchelle d'images radar : application au filtrage, à la classfication et à la fusion d'images radar en optique". Rennes 1, 2001. http://www.theses.fr/2001REN10112.
Pełny tekst źródłaLussier, Jacques. "Vitesse de traitement de l'information et évaluation précoce chez les accidentés vasculaires cérébraux". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0004/MQ41954.pdf.
Pełny tekst źródłaFrey, Aline. "Traitement perceptif et cognitif de l'information auditive et musicale : segmentation des flux et figures sonores". Paris 8, 2009. http://www.theses.fr/2009PA083076.
Pełny tekst źródłaThe aim of this thesis is to study the segmentation of auditory and musical flows. We argue for the existence of temporal figures in segmentation and in auditory perception. Specifically, we are interested in the Temporal Semiotic Units (TSUs) that represent 19 categories of musical segments which acquire meaning through the temporal organization of auditory flows. We tested the cognitive relevance of the TSUs, as well as of the Temporal Configured Patterns (TCPs), that represent a graphic modelling of the TSUs based on temporal functions. Finally, auditory perception requires knowledge to organize the different elements and expert knowledge differ from novice knowledge. Thus, we explored the effect of expertise through our different experiments. Five experiments were conducted that used methods from both cognitive psychology (segmentation task and categorization) and cognitive neurosciences (ERPs). Overall results did not reveal any effect of musical expertise on segmentation or on TSUs and TCPs categorization. These results are discussed in terms of implicit learning that would favour the ability to internalize sound forms like USTs, independently of any musical expertise. Moreover, our results demonstrate the TSUs psychological relevance in that they perceived as a whole, as a temporal sound form. This interpretation is strengthened by the electrophysiological data analyzes showing that a conceptual incongruity in a TSU generate specific changes in the Evoked Potentials. Finally, TSU theorization work is still in progress and some TSUs categories need to be more defined. The fact that TSUs could convey meaning will also be tested in other experimental contexts
Decouchant, Dominique Mossière Jacques Krakowiak Sacha. "Partage et migration de l'information dans un système réparti à objets". S.l. : Université Grenoble 1, 2008. http://tel.archives-ouvertes.fr/tel-00324431.
Pełny tekst źródłaMillêtre, Béatrice. "Habituation visuelle et traitement de l'information chez le nourrisson de 3 et 5 mois". Paris 5, 1991. http://www.theses.fr/1991PA05H063.
Pełny tekst źródłaVisual habituation is often considered as linked to information processing, but very few studies have emphasized the relations. Our work has tried to define the relations between visual habituation and information processing. At the end of our experiments, it clearly appears that informaiton processing is achieved before habituation is reached. Habituation can then be considered as involving two successive operations, the first during which information is encoded and a representation made, the second one during which the perceptive imput is compared with the preceeding mnemonic trace, and information recognized as the same. Habituation shows the sam two operations at 3 and 5 months
Xiao, Haiqiao. "Etude comparée de l'information dans les quotidiens et les journaux télévisés : traitement et présentation". Bordeaux 3, 1992. http://www.theses.fr/1992BOR30004.
Pełny tekst źródłaBrouillet, Denis. "Representation et memoire. Du traitement de l'information a l'elaboration de la signification". Montpellier 3, 1993. http://www.theses.fr/1993MON3A010.
Pełny tekst źródłaThe representations are considered as a mediating system between the environment and the subject. Therefore, they act upon the memory process. Today memory is not only considered as the ability to restore past events, it is looked as various processes which contributs to the construction of the signification. To what extent do the memory contents affect this construction, particulary subjective cognitions ? ourwork concerns the reprocessing of an informations which establishes a close relation with the subject's cognitions. To start with, this relation which is tackled in terms of "congruence" will be considered from the point of view of the relevant that information represents for the suject. To be more acurate subjects are concerned about the given information. Regults show that it is more difficult to generate congruent information than ineffectual information. Subjects cannot find critical information from the available stock of information. We interpret this phenomenon as "confusion". The essence of the confusion result from an interference between representations. The main part of our thesis was to demonstrate that, for subjects, the cognitive activity cannot be confined to the computation of information, in fact it is matter of managing the meaning of the information, most of what it does consists of elaboration of the information. .
Chihi, Mondher. "Représentation et traitement de l'information touristique : apports de l'analyse de corpus : thèse". Nice, 2001. http://www.theses.fr/2001NICE2031.
Pełny tekst źródłaPerbal-Hatif, Séverine. "Estimation du temps, vitesse de traitement de l'information et mémoire : approche neuropsychologique". Paris 6, 2002. http://www.theses.fr/2002PA066291.
Pełny tekst źródłaHuré, Kathleen. "Traitement de l'information sociale et statuts dans le bullying chez les adolescents". Thesis, Tours, 2014. http://www.theses.fr/2014TOUR2012/document.
Pełny tekst źródłaBullying is an insidiously aggressive behavior characterized by repetitiveness, asymmetry (a bully dominating his victim) and intent to do harm (Olweus, 1993). Any individual concerned will fall into one of four categories: bully, victim, bully/victim or not involved. If numerous researchers have taken an interest in the psychopathological impact of bullying on its victims, there have been few studies devoted to the differences in the psychology of adolescents depending on their status in bullying. Our research refers to the theoretical pattern of Crick and Dodge (1994) to process social information. They contend the information will be processed in six stages in interaction with the central nervous system which involves the regulation of emotions and the command of social skills. We have carried out two experiments. In the course of semi-Structured individual interviews, seven hundred and seventeen (717) secondary school students answered different sets of questions about bullying and social information processing mechanisms. In both studies we have performed statistical analyses. The main results show different types of information processing depending on the status in bullying
Hedayat, Sara. "Conception et fabrication de neurones artificiels pour le traitement bioinspiré de l'information". Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1I039/document.
Pełny tekst źródłaCurrent computing technology has now reached its limits and it becomes thus urgent to propose new paradigms for information processing capable of reducing the energy consumption while improving the computing performances. Moreover, the human brain, is a fascinating and powerful organ with remarkable performances in areas as varied as learning, creativity, fault tolerance. Furthermore, with its total 300 billion cells, is able to perform complex cognitive tasks by consuming only around 20W. In this context, we investigated a new paradigm called neuromorphic or bio-inspired information processing.More precisely, the purpose of this thesis was to design and fabricate an ultra-low power artificial neuron using recent advances in neuroscience and nanotechnology. First, we investigated the functionalities of living neurons, their neuronal membrane and explored different membrane models known as Hodgkin Huxley, Wei and Morris Lecar models. Second, based on the Morris Lecar model, we designed analog spiking artificial neurons with different time constants and these neurons were fabricated using 65nm CMOS technology. Then we characterized these artificial neurons and obtained state of the art performances in terms of area, dissipated power and energy efficiency. Finally we investigated the noise within these artificial neurons, compared it with the biological sources of noise in a living neuron and experimentally demonstrated the stochastic resonance phenomenon. These artificial neurons can be extremely useful for a large variety of applications, ranging from data analysis (image and video processing) to medical aspect (neuronal implants)
Pernot, Pascale. "Traitement de l'information et efficacité économique des automatismes : la place du Grafcet". Grenoble 2, 1990. http://www.theses.fr/1990GRE21014.
Pełny tekst źródłaThis research studies information place in a automatized productive activity. Available information is a determinative of time availability of a production process. When the use of information is an internal activity of the production process, information management may not be reducted to a cost production minimazation problem, but possesses qualitative aspects. This research proposes an approach to modelise the relation between information and productivity. The analysis is founded on a particular description tool: the grafcet
Madec, Morgan Hervé Yannick. "Conception, simulation et réalisation d'un processeur optoélectronique pour la reconstruction d'images médicales". Strasbourg : Université Louis Pasteur, 2007. http://eprints-scd-ulp.u-strasbg.fr:8080/630/01/madec2006.pdf.
Pełny tekst źródłaBoutary, Martine. "Le traitement de l'information, comme élément de performance des PME exportatrices". Toulouse 1, 1998. http://www.theses.fr/1998TOU10006.
Pełny tekst źródłaWith plenty of informations and a great development of information technology, medium-sized firms should be very performant. But they have still lots of difficulties for information analysis. This research intents to identify the information process of this kind of firms, particularly the one's which export. The hypothesis is “the information analysis is part of firm performance”. A conceptual study of PME's, information and information systems and them an empirical study allow some interesting analysis. Performances of firms are different according to the type of information analysis. It's important to establish a relation between firm investments and performance on international market
Loquin, Kevin. "De l'utilisation des noyaux maxitifs en traitement de l'information". Phd thesis, Montpellier 2, 2008. http://www.theses.fr/2008MON20108.
Pełny tekst źródłaBeaucoup d'algorithmes en traitement du signal ou en statistiques utilisent, de façon plus ou moins explicite, la notion d'espérance mathématique associée à une représentation probabiliste du voisinage d'un point, que nous appelons noyau sommatif. Nous regroupons ainsi, sous la dénomination d'extraction sommative d'informations, des méthodes aussi diverses que la modélisation de la mesure, le filtrage linéaire, les processus d'échantillonnage, de reconstruction et de dérivation d'un signal numérique, l'estimation de densité de probabilité et de fonction de répartition par noyau ou par histogramme,...
Comme alternative à l'extraction sommative d'informations, nous présentons la méthode d'extraction maxitive d'informations qui utilise l'intégrale de Choquet associée à une représentation possibiliste du voisinage d'un point, que nous appelons noyau maxitif. La méconnaissance sur le noyau sommatif est prise en compte par le fait qu'un noyau maxitif représente une famille de noyaux sommatifs. De plus, le résultat intervalliste de l'extraction maxitive d'informations est l'ensemble des résultats ponctuels des extractions sommatives d'informations obtenues avec les noyaux sommatifs de la famille représentée par le noyau maxitif utilisé. En plus de cette justification théorique, nous présentons une série d'applications de l'extraction maxitive d'informations en statistiques et en traitement du signal qui constitue une boîte à outils à enrichir et à utiliser sur des cas réels.
Loquin, Kevin. "De l'utilisation des noyaux maxitifs en traitement de l'information". Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2008. http://tel.archives-ouvertes.fr/tel-00356477.
Pełny tekst źródłaBeaucoup d'algorithmes en traitement du signal ou en statistiques utilisent, de façon plus ou moins explicite, la notion d'espérance mathématique associée à une représentation probabiliste du voisinage d'un point, que nous appelons noyau sommatif. Nous regroupons ainsi, sous la dénomination d'extraction sommative d'informations, des méthodes aussi diverses que la modélisation de la mesure, le filtrage linéaire, les processus d'échantillonnage, de reconstruction et de dérivation d'un signal numérique, l'estimation de densité de probabilité et de fonction de répartition par noyau ou par histogramme,...
Comme alternative à l'extraction sommative d'informations, nous présentons la méthode d'extraction maxitive d'informations qui utilise l'intégrale de Choquet associée à une représentation possibiliste du voisinage d'un point, que nous appelons noyau maxitif. La méconnaissance sur le noyau sommatif est prise en compte par le fait qu'un noyau maxitif représente une famille de noyaux sommatifs. De plus, le résultat intervalliste de l'extraction maxitive d'informations est l'ensemble des résultats ponctuels des extractions sommatives d'informations obtenues avec les noyaux sommatifs de la famille représentée par le noyau maxitif utilisé. En plus de cette justification théorique, nous présentons une série d'applications de l'extraction maxitive d'informations en statistiques et en traitement du signal qui constitue une boîte à outils à enrichir et à utiliser sur des cas réels.
BAZIN, SABOURAUD NADINE. "Etude des processus implicites de traitement de l'information chez des patients deprimes et des patients schizophrenes : memoire et traitements contextuels". Paris 6, 1997. http://www.theses.fr/1997PA066216.
Pełny tekst źródłaALLAIS, VALERIE. "Mobilisation des connaissances et traitement de l'information dans l'apprentissage incident de regles : verbalisation et application". Montpellier 3, 1994. http://www.theses.fr/1994MON30027.
Pełny tekst źródłaFive experiments, examined conditions to discover transposition rules and the extent of cognitive load in "working-memory" - in each condition, where the complexity are different, we founded three kinds of subjects differing by their verbal knowledge and effective use of the rule. Thus, in incidental learning there are always subjects who verbalized the "key-rule" and applied it in nearly every item ; other subjects who verbalized an other rule and applied the "key-rule" in 2 3 of items. And, last, subjects who don't verbalized brut applied the "key-rule" also in 2 3 items. The subjects able to verbalize the rule are also the same who apply it to salve the problems ; they are also the only ones disturbed should the rule made no valid anymore. They appear to lake time during the solving of the first items, and so planify the solving process of the remaining ones. This has not been observed in subjects unable to verbalise the rule
Ziani, Abdulkrim. "La chaîne Al-Jazira et la guerre contre l'Irak : couverture médiatique et traitement de l'information". Grenoble 3, 2007. http://www.theses.fr/2007GRE39050.
Pełny tekst źródłaThe Anglo-American war against Iraq was the first war ever to be broadcasted live. If is not an exaggeration to say that the viewers took part in this war, by following its events by the hour. Another specificity of this war was that it witnessed the multiplication of Media eager to cover the events. Study deals with the Qatari channel Al Jazeera as a new model of Arab Medias, through the study of the channel as a media organization, from its creation to its funding, to its editorial policy. We also study the constant confrontations of the channel with the authorities of most Arab countries and the numerous campaigns the United States have launched against it. While also taking a look at the international popularity the channel gained, we will try and answer different questions, among which : How did Al Jazeera cover the events of the war against Iraq? Which were the orientations of this coverage? Which models and styles of treatment did the reporters of Al Jazeera use for their coverage? Which information sources did the channel trust? What role did the new communication technologies play in the coverage of the war? The practice of the reporters during their coverage of the war events is also part of our study
Andrieux, Mathieu. "Autocontrôle et adaptation de la difficulté dans l'apprentissage d'une habileté motrice". Toulouse 3, 2011. http://thesesups.ups-tlse.fr/1477/.
Pełny tekst źródłaThis thesis focuses on the study of the cognitive processes underlying the adaptation of task difficulty in motor skill learning. In a series of three experiments, we adapted the task difficulty to the skill level of the learner according to two methods: self-control and performance-based adaptive schedule. The data of the first experiment revealed that participants who can set the level of difficulty, before each trial, in a complex coincidence anticipation task demonstrated a better long-term retention of learning than those for which this parameter was imposed. The data of the second experiment revealed that learners who could adjust the task difficulty during the beginning of the acquisition phase outperformed their counterparts who could freely adjust this parameter during the end of the acquisition phase. In the third experience, we demonstrated that a performance based adaptive schedule led to a better learning that a condition in which the level of difficulty remained maximal and constant. Broadly speaking, a practice condition in which the level of task difficulty change contingent on the learner's performance is supposed to enhance learning: 1) by optimizing the information processing (according to the challenge point hypothesis), and 2) by enhancing the learner's motivation due to his active involvement in the learning process
Loyau, Thierry. "Traitement de l'information pour l'analyse des champs d'intensité acoustique et des sources sonores". Compiègne, 1988. http://www.theses.fr/1988COMPD098.
Pełny tekst źródłaKerouedan, Sylvie. "Conception et réalisation de circuits VLSI-CLF pour le traitement de l'information optique". Brest, 1998. http://www.theses.fr/1998BRES2012.
Pełny tekst źródłaYE, Zi. "Traitement statistique de l'information et du signal pour l'internet des objets sous-marins". Thesis, Institut polytechnique de Paris, 2021. https://tel.archives-ouvertes.fr/tel-03179373.
Pełny tekst źródłaThere has been recently a large development of human activities associated to the ocean world, where no standard has emerged for the Internet of Things (IoT) linked to marine autonomous objects. Though it has a limited bandwidth, the acoustic wave is the only way to communicate over average to large distances and it is thus used by many underwater systems to communicate, navigate, or infer information about the environment. This led to a high demand for wireless networks that require both spectral efficiency and energy efficiency with the associated low-complexity algorithms. Therefore, in this Ph.D. thesis, we proposed several original solutions to face this challenge.Indeed, due to the inherent Signal Space Diversity (SSD), rotated constellations allow better theoretical performance than conventional constellations with no spectral spoilage. We review the structural properties of uniformly projected rotated M-QAM constellations, so as to propose a low complexity soft demapping technique for fading channels. Then, we present an original blind technique for the reduction of the PAPR for OFDM systems using the rotated constellations with SSD. In order to reduce the complexity of blind decoding for this technique, we again rely on the properties of uniformly projected M-QAM rotated constellations to design a low-complexity estimator. Moreover, to face the selectivity of the acoustic channel, we suggest a sparse adaptive turbo detector with only a few taps to be updated in order to lower down the complexity burden. Finally, we have proposed an original self-optimized algorithm for which the step-sizes of both the equalizer and the phase estimator are updated adaptively and assisted by soft-information in an iterative manner, so as to meet the requirement of fast convergence and low MSE over time-varying channels
Loyau, Thierry. "Traitement de l'information pour l'analyse des champs d'intensité acoustique et des sources sonores". Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37615354j.
Pełny tekst źródłaBOUET, MARINETTE. "Traitement de l'information multimedia : modelisation, indexation, traitement de la forme et recherche d'images dans un sgbd a objets". Nantes, 2000. http://www.theses.fr/2000NANT2011.
Pełny tekst źródłaFenouillet, Fabien. "Mémoire et motivation : impact de l'implication de l'ego et du but sur l'organisation de l'information en mémoire". Rennes 2, 1996. http://www.theses.fr/1996REN20031.
Pełny tekst źródłaDifferent experiments, led hitherto, is interested to booms some cognitive motivational mechanisms on the cognitive mnemonic mechanisms. A review of question in the field of the motivation allowed of realize than the mechanisms cognitive interact with the strategies than people utilizes to solve one task. All a flap of the memory interests also to strategies but this time in relationship with the organization of the information in memory. This common point has therefore served of junction among motivation and memory. The different researches, in using either the theory some goals (Locke and Latham, 1990) either the ego involvment, tested this hypothesis with success, and allows therefore to saying than the a some main action of the motivation on memory is an increase of the organization. Memory and motivation: impact of ego involment and goal on the organization of information in memory
Strappazzon, Jean-Pierre. "Espaces de cohérence de l'entreprise et information : l'impact des technologies de traitement de l'information". Grenoble 2, 1997. http://www.theses.fr/1997GRE21011.
Pełny tekst źródłaFor over a decade, have been confronting with arbitration between overall integration and local differenciation. This situation originates organizational tension and generates increasing flows of information. The object of this thesis is to explain the elements of that arbitration by setting out the extent of firm coherence. The thesis supports a multidimensional approach through analysing three strategic spheres of company coherence. A coherence in the links between market and company organization. A coherence between individual behaviours and overall organisation strategy. A coherence between short term experience development and long term skills dynamycs implementation. The first part of this work aims at elaborating a complex analyse framwork i. E. One heterogeneous and eclectic in its mobilizing theorical instruments and conceptual structures. The purpose of the second part, leaving plenty of room for pratical investigations is to discus the impact of data processing technologies on company coherence. Symmetrically, the distinction between an overall, integrated approach of data processing (through the computer integrated manufacturing pattern) and an approach throught differentiated structures which tell apart the spheres of coherence fits in with the processes of the thesis
Piedbois, Pascal. "Stratégies d'informatisation d'un service de cancérologie, et nouvelles approches du traitement graphique de l'information". Paris 12, 1994. http://www.theses.fr/1994PA120023.
Pełny tekst źródłaWERTEL, FOURNIER ISABELLE. "L'iconographe dans le labyrinthe des mots et des images pour un imagier numerique comme espace cartographie de l'iconotheque". Paris 8, 1999. http://www.theses.fr/1999PA081628.
Pełny tekst źródłaCharnois, Thierry. "Accès à l'information : vers une hybridation fouille de données et traitement automatique des langues". Habilitation à diriger des recherches, Université de Caen, 2011. http://tel.archives-ouvertes.fr/tel-00657919.
Pełny tekst źródłaBueno, garcia Mercedes. "Impact d’un systeme anticollision sur le traitement de l'information et le comportement du conducteur". Thesis, Bordeaux 2, 2013. http://www.theses.fr/2013BOR22041/document.
Pełny tekst źródłaThis thesis was focused on the analysis of the impact of a collision warning system on information processing and driver behaviour in simulated driving. The objectives of this work were 1) to determine the impact of a warning signal associated with a collision warning system on the processing of information using evoked potentials, 2) to analyse the effectiveness of such a system according to its reliability, 3) and according to the drivers’ attentional state, 4) to examine the behavioural adaptation to the system over time. Using an electrophysiological and behavioural dual approach, we showed that the warning signal acts at the level of anticipation and response preparation and at the level of cognitive processing. Moreover, we confirmed that collision warning systems do not need to be completely reliable to be effective. We also observed that the effectiveness of the warning signal associated with the collision warning system was lower in distracted subjects, especially when the cognitive load associated with the distraction was high. This suggests that the warning signal requires attentionnal resources in order to be processed and, therefore, to be effective. Concerning behavioural adaptation to the system, the main results showed firstly that the immediate introduction of the system had a positive effect on the driving behaviour and secondly that the process of adaptation of the system at the longer term may be affected if drivers are distracted by high demanding secondary tasks
Schleifer, Jacques. "Traitement de l'information et des connaissances dans la planification des mines à ciel ouvert". Paris, ENMP, 1986. http://www.theses.fr/1986ENMP0139.
Pełny tekst źródłaDucato, Maria Giovanna. "Vulnérabilité psychométrique du traitement de l'information visuelle et des troubles attentionnels dans la schizophrénie". Lille 2, 2006. http://www.theses.fr/2006LIL2S062.
Pełny tekst źródłaGallay, Mathieu. "Le développement de la reconnaissance des visages : traitement de l'information configurale et mouvements oculaires". Paris 5, 2008. http://www.theses.fr/2008PA05H036.
Pełny tekst źródłaFace processing in adults is a highly developed ability for two main reasons First adults deal with faces very frequently since their youngest age. Secondly, the high similarity of faces (all faces made with the same features at the same place) and the great amount of information they convey (age, sex, emotional and features at the same place) requires a very precise analysis of faces characteristics. As a consequence, human evolution led adults to develop an expert processing, involving configural information and mobilizing specific cerebral networks. Moreover, face processing in infancy and chidhood shows an atypic developmental curve: newborns are already able to recognize a face but adult's level of efficiency (the expertise level) is not reached before the age of ten. First, this research has for purpose to show the existence of an early configural processing. Then, we will try to understand why this ability develops slowly, and will attempt to show that particularities of this expert processing are directly related to the informations visual exploration of faces enables us to extract. Finally, our experimental results will be discussed with respect to previous findings
Gibert, Dominique. "Le geoide altimetrique : traitement de l'information et application a la geodynamique de l'atlantique sud". Paris 7, 1988. http://www.theses.fr/1988PA077059.
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