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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

Avmystifieringen av medvetandet : Daniel Dennetts Multiple Drafts Model / Demystification of consciousness : Daniel Dennett’s Multiple Drafts Model

Prem, Waltraud January 2024 (has links)
This paper compares two models of the philosophy of mind: René Descartes' substance dualism and Daniel Dennett's multiple-drafts model. Descartes posits that the body and consciousness are distinct substances capable of independent existence, with the pineal gland serving as the point of interaction between the physical and conscious realms. Conversely, Dennett rejects this dualist approach, proposing that consciousness and all mental activities emerge from complex, multitrack neurophysiological processes distributed across various brain regions. Additionally, the paper examines the knowledge argument as a significantchallenge to physicalism. The study aims to demonstrate that Dennett's physicalist model, grounded in contemporary neuroscience, offers a more plausible explanation for the emergence of consciousness through neuronal activity, whereas substance dualism fails to elucidate the phenomenon and instead contributes to its mystification. / I denna uppsats jämförs två modeller av medvetandefilosofin, den substansdualistiska modellen av René Descartes och the multiple drafts model av fysikalisten Daniel Dennett. Descartes ser kropp och medvetande som två skilda substanser som kan existera oberoende av varandra. Enligt Descartes är tallkottkörteln den fysiska platsen där det fysiska och medvetandet kommer i kontakt med varandra. Dennett förkastar Descartes teori och beskriver uppkomsten av medvetande och alla former av mental aktivitet som ett resultat av komplexa flerspåriga neurofysiologiska processer på olika platser i hjärnan. Uppsatsen tar också upp och analyserar ett viktigt argument mot fysikalismen, kunskapsargumentet eller Mary i det svartvita rummet. Syftet med uppsatsen är att visa att Dennetts fysikalistiska modell är en samtida, neurovetenskapligt välgrundad och lämplig modell för att förklara uppkomsten av medvetandet som en produkt av neuronal aktivitet i hjärnan och att substansdualism inte ger förklaringar till fenomenet medvetande, utan snarare stöder ämnets mystifiering.
142

Association entre le profil de force musculaire et les capacités fonctionnelles aux membres inférieurs chez les personnes atteintes des phénotypes adulte classique et adulte tardif de dystrophie myotonique de type 1 / Relationships between lower limb muscle strength and mobility capacities in myotonic dystrophy type 1 adult and late onset phenotype

Petitclerc, Émilie January 2015 (has links)
Résumé: But : Les objectifs étaient de 1) décrire les profils de force musculaires aux membres inférieurs (MIs) et les capacités aux déplacements des personnes présentant les phénotypes adulte classique (DM1-AC) et adulte tardif (DM1-AT) de la dystrophie myotonique de type 1 (DM1), et 2) d’explorer l’influence de la faiblesse des MIs sur les capacités aux déplacements dans cette population. Méthode : Cette étude consiste en une analyse secondaire de données issues d’une plus large recherche qui visait à identifier les déterminants de la participation sociale et de la qualité de vie de personnes atteintes de DM1 (n = 158 DM1-AC et n = 42 DM1-AT). La force de quatre groupes musculaires des MIs a été mesurée à l’aide du bilan musculaire manuel (BMM) et du bilan musculaire quantitatif (BMQ) par dynamométrie manuelle. Les capacités aux déplacements ont été évaluées à l’aide de tests standardisés (échelle d’équilibre de Berg, vitesse de marche et Timed Up & Go). Résultats : Le phénotype DM1-AT présente moins de faiblesse et d’incapacités que le phénotype DM1-AC (p < 0,001 – 0,020). Le BMM ne détecte pas de faiblesse chez le phénotype DM1-AT mais des pertes de force au BMQ de 12 % à 20 % ont été identifiées chez ce phénotype, excepté pour les fléchisseurs du genou, entrainant des limitations aux déplacements chez 22 % à 48 % de ces individus. Dans le phénotype DM1-AC, l’atteinte musculaire était légèrement plus importante en distal qu’en proximal. Selon ces résultats, les phénotypes DM1-AC et DM1-AT présentent des portraits distincts et les données relatives à chacun devraient être analysées séparément. Une progression générale de la faiblesse au BMQ et des scores aux tests fonctionnels a été observée en fonction des cotes de l’échelle Muscular Impairment Rating Scale (MIRS). Un déficit de force au BMQ (excepté pour les fléchisseurs du genou) et des incapacités fonctionnelles ont aussi été observés dès les premières cotes de la MIRS. Finalement, les dorsifléchisseurs de la cheville et les extenseurs du genou semblent être de bons indicateurs de la fonction des membres inférieurs en DM1. Conclusion : Cette étude a permis de dresser un portrait des atteintes de la force musculaire aux MIs et des capacités fonctionnelles liées aux déplacements pour chacun des phénotypes DM1-AC et DM1-AT de la DM1, ainsi que d’explorer la contribution de la faiblesse des groupes musculaires évaluées sur les capacités aux déplacements dans cette population. Ces résultats contribueront à mieux déterminer les cibles d’évaluation et d’interventions en réadaptation et à mieux définir le processus d’évaluation dans le contexte des essais thérapeutiques à venir. / Abstract: Purpose: The purposes of this study were 1) to describe lower limbs muscle strength and mobility capacities, and 2) to explore the respective contribution of lower limb muscle weaknesses on mobility in the adult and late-onset phenotypes of myotonic dystrophy type 1 (DM1). Methods: This study is a secondary analysis of part of the results of a larger study, whose purpose was to identify social participation and quality-of-life determinants in 200 DM1 patients (158 adult and 42 late-onset). The strength of four lower limb muscle groups was assessed using manual muscle testing (MMT) and handheld dynamometry quantitative muscle testing (QMT). Mobility capacities were assessed using standardized tests (Berg balance scale, 10 Meter Walk Test and Timed Up & Go). Results: Although the late-onset phenotype showed less weaknesses and mobility limitations than the adult phenotype (p <0.001-0.020), and although MMT showed no weakness in the late-onset phenotype, quantitative strength losses of 12-20% were measured in this phenotype, with the exception of the knee flexors. These weaknesses led to mobility limitations in 22-48% of participants with the late-onset phenotype. In the adult phenotype, muscle strength impairment was slightly more important distally than proximally (2-2.5/10 and 5.8-8.2% for MMT and QMT, respectively) (p <0.001-0.002). According to those results, the adult and late-onset phenotypes show different profiles of lower limb impairment, and should not be pooled for data analysis. A general progression of quantitative muscle weakness and of mobility scores was observed according to the Muscular Impairment Rating Scale (MIRS) classification. Quantitative weaknesses, with the exception of the knee flexors, and mobility limitations were observed from the first MIRS grades. QMT is therefore definitely a more effective tool for measuring weakness in DM1. Finally, ankle dorsiflexors and knee extensors seem to be good indicators of lower limb function in DM1. Conclusion: This study allowed a better characterization of lower limb weaknesses and mobility limitations in the adult and late-onset phenotypes of DM1, and explored the contribution of lower limb weaknesses on mobility capacities in this population. These results will be useful for developing more specific rehabilitation programs and for optimizing the evaluation of these impairments in the context of the upcoming therapeutic trials. Keywords: Myotonic dystrophy type 1, phenotypes, muscle strength, mobility capacities, lower limbs, explanatory variables, physiotherapy.
143

大學生生活壓力、解釋風格與情緒幸福感之關係研究 / The relationships among life stress, explanatory style, and emotional well-being of college students.

楊晴如, Yang, Ching Ju Unknown Date (has links)
在急速變遷與多元渾沌的現今,如何轉化複雜且遽增的壓力以提升個體本身的幸福感實屬一重要的議題。本研究主要目的在建立生活壓力、解釋風格與情緒幸福感的結構方程式模型,藉以探討之間的影響關係,進而瞭解解釋風格在這關係中所扮演的中介效果。 本研究以兩組各644位政治大學的大學生為研究對象,採問卷調查法施以生活壓力量表、解釋風格量表及情緒幸福感量表,使用的資料分析方法包括:t考驗、單因子變異數分析、因素分析、及結構方程式模型。本研究以第一組樣本探究不同性別與不同年級在研究變項上的差異,接著,經建構與修正模式後提出最終的關係模式,最後,以第二組樣本驗證最終模式的穩定性。主要結果茲分述如下: 一、在背景變項方面: (一)不同性別與不同年級大學生在「生活壓力」與「解釋風格」上有顯著差 異。 (二)不同性別與不同年級大學生在「情緒幸福感」上未有顯著差異。 二、在結構模式方面: (一)課業壓力、人際壓力對解釋風格有直接正向效果。 (二)課業壓力、人際壓力對情緒幸福感有直接負向效果。 (三)解釋風格對情緒幸福感有直接負向效果。 (四)人際壓力能直接影響情緒幸福感,也能透過解釋風格間接影響情緒幸福感。 (五)解釋風格在課業壓力與情緒幸福感間扮演完全中介變項的角色。 (六)最終模式的交叉驗證具有模式穩定性。 最後,根據研究結果提出建議,供諮商輔導實務及未來研究參考。 / With the rapid change and the multicultural context of the modern society, how to deal with the complicated and hastily increased stress and to promote people’s well-being is an important issue. The main purpose of this study is to construct the structural equation modeling (SEM) of stress, explanatory style, and emotional well-being. By this way, the researcher can explore the relationship among the three variables, and know the mediator variable of explanatory style. The participants were two groups of students at National Chengchi University, and each group included 644 college students. The data was collected by questionnaires, including the stress scale, the explanatory style scale, and the emotional well-being scale. Moreover, the data were analyzed by t-test, ANOVA, factor analysis, and SEM. The study, firstly, used the first group to explore the differences of gender and grade, and constructed the final structural model after setting and modifying model. Finally, the researcher used the second group to verify the stability of the model. The main results were summarized as follows: About the background variables: 1.Students with different gender and grade were significantly different in the scores of stress and explanatory style. 2.Students with different gender and grade were not significantly different in the scores of emotional well-being. About the structural model: 1.Academic stress and relationship stress had positive influence on explanatory style directly. 2.Academic stress and relationship stress had negative influence on emotional well-being directly. 3.Explanatory style had negative influence on emotional well-being directly. 4.Relationship stress had influence on emotional well-being directly, and it also affected emotional well-being through explanatory style. 5.Explanatory style was a mediator variable between academic stress and emotional well-being. 6.Through the cross-validation, the final structural model was of model stability. Finally, based on the findings of the study, the researcher made some practical strategies for counselor and some suggestions for further studies.
144

Developing a theory of psychopathological perfectionism within a cognitive behavioural framework

Baker, David January 2012 (has links)
Background: Psychological perfectionism, from a clinical perspective, started to be a topic of interest for cognitive behavioural clinicians at the beginning of the 1950s. Whilst many studies have identified perfectionism as a pivotal motivator in different conditions of neurosis, the exact nature of its interactions remains unclear. In the research community there is still a debate as to whether there is such a thing as good perfectionism, and there remains no consensual theory of psychopathological perfectionism. Aims: The aim of the study was to investigate why the nature of the phenomena remains a contentious issue, and to develop a robust theory of psychopathological perfectionism, within a cognitive behavioural framework, which will find general acceptance. From the literature review this appears to be the first qualitative study to develop such a theory. Method: Substantive grounded theory was developed within a framework of methodical hermeneutics which, it is argued, is capable of generating formative theory. 20 volunteers who came forward in response to advertisements became participants in semi-structured interviews using a post classic qualitative methodology, from which emerging data became the basis of categories leading to the development of the theory, and functions of the phenomena. Results and Conclusions: The study sets out reasons why there remains an impasse amongst researchers and clinicians about the condition of psychopathological perfectionism. A parsimonious theory of pathological perfectionism has been developed, the constructs of which are just necessary and sufficient to describe the condition. The developed theory makes a contribution to theories proposed prior to 1990 and to contemporary research. However as with all theories it is necessarily provisional, so that its usefulness is in need of further research and development. Psychopathological perfectionism has only two constructs, namely a demand to achieve perfectionism in at least one idiosyncratic sphere, which is in response to a core schema of conditional worth. A number of symptoms or functions of psychopathological perfectionism have also been identified, and there are suggestions as to how the condition develops and is maintained to the detriment of the sufferer. The study synthesizes over fifty years of theory and research into the phenomena. The developed theory and its symptoms or functions have important implications for clinical interventions, training, and for further psychological and psychosocial research. These implications are discussed.
145

Identification et modélisation lexicographique des dépendances syntaxiques régies du français: le cas des dépendances nominales

Arbour Barbaud, Évelyne 04 1900 (has links)
Cette recherche porte sur l’interface entre la sémantique lexicale et la syntaxe, et elle s’inscrit dans le cadre du projet de base lexicale DiCo (acronyme pour Dictionnaire de combinatoire) à l’Observatoire de Linguistique Sens-Texte [OLST] de l’Université de Montréal. Le projet découle d'une volonté d'inscrire de façon concise et complète, à même le dictionnaire, le comportement syntaxique typique à chaque unité lexicale. Dans cette optique, nous encodons la cooccurrence des lexies nominales du DiCo avec leurs actants à l'intérieur d'un tableau de régime lexical (aussi connu sous le nom de schéma valenciel, structure argumentale, cadre de sous-catégorisation, structure prédicats-arguments, etc.), en notant entre autres les dépendances syntaxiques de surface impliquées. Dans ce mémoire, nous présentons les propriétés syntaxiques d'une dépendance nominale du français, celle que nous avons nommée attributive adnominale, de façon à exposer une méthodologie d'identification et de caractérisation des dépendances syntaxiques de surface. Nous donnons également la liste des dépendances nominales régies identifiées au cours de ce travail. Par la suite, nous exposons la création d'une base de données de régimes généralisés du français nommée CARNAVAL. Finalement, nous discutons des applications possibles de notre travail, particulièrement en ce qui a trait à la création d'une typologie des régimes lexicaux du français. / This research focuses on the interface between lexical semantics and syntax, and is part of the lexical database project called DiCo (acronym for Dictionnaire de combinatoire) at the Observatoire de Linguistique Sens-Texte [OLST] at the University of Montreal. The project aims to register in a concise and complete way the typical syntactic behavior of each lexical unit directly in the dictionary. To this end, we encode the co-occurrence of the DiCo's nominal lexical units with their actants within a government pattern (also known as valency structure, subcategorization frame, predicate-argument structure, etc.), using, among other things, the surface syntactic dependencies involved. In this dissertation, we present the syntactic properties of a French nominal dependency, the one that we named attributive adnominale, so as to expose a methodology for the identification and the characterization of surface syntactic dependencies. We also give the list of valence-controlled nominal dependencies that were identified in our work. Subsequently, we describe the creation of a database of generalized French government patterns named CARNAVAL. Finally, we discuss possible applications of our work, particularly in regard to the creation of a typology of French government patterns.
146

The Double Pareto-Lognormal Distribution and its applications in actuarial science and finance

Zhang, Chuan Chuan 01 1900 (has links)
Le but de ce mémoire de maîtrise est de décrire les propriétés de la loi double Pareto-lognormale, de montrer comment on peut introduire des variables explicatives dans le modèle et de présenter son large potentiel d'applications dans le domaine de la science actuarielle et de la finance. Tout d'abord, nous donnons la définition de la loi double Pareto-lognormale et présentons certaines de ses propriétés basées sur les travaux de Reed et Jorgensen (2004). Les paramètres peuvent être estimés en utilisant la méthode des moments ou le maximum de vraisemblance. Ensuite, nous ajoutons une variable explicative à notre modèle. La procédure d'estimation des paramètres de ce mo-\\dèle est également discutée. Troisièmement, des applications numériques de notre modèle sont illustrées et quelques tests statistiques utiles sont effectués. / The purpose of this Master's thesis is to describe the double Pareto-lognormal distribution, show how the model can be extended by introducing explanatory variables in the model and present its large potential of applications in actuarial science and finance. First, we give the definition of the double Pareto-lognormal distribution and present some of its properties based on the work of Reed and Jorgensen (2004). The parameters could be estimated by using the method of moments or maximum likelihood. Next, we add an explanatory variable to our model. The procedure of estimation for this model is also discussed. Finally, some numerical applications of our model are illustrated and some useful statistical tests are conducted.
147

Var är meningen? : Elevtexter och undervisningspraktiker

Bergh Nestlog, Ewa January 2012 (has links)
This is about how pupils in years 4 to 6 of compulsory school and their teachers make meaning in teaching activities and texts. The aim of the study is to investigate the teaching and learning of writing and the pupils’ discursive texts. Another aim is to use linguistic theories and develop methods and analytical concepts for studying teaching practices. Sources for the material are the teaching practices in two classes, the teachers and the pupils. The field studies lasted for two years, consisting of observations and interviews. Twelve pupils’ texts and four writing projects are studied in depth. The theoretical framework is linked to systemic functional linguis­tics, critical discourse analysis, dialogical conception of language and new literacy studies. Analytical tools are also derived from rhetorical structure theory, relief theory and theory of text sequences. These tools have been adap­ted and are also applied in the analysis of the teaching practice. To analyse pupils’ meaning making in their texts, a theory of mobility in texts is used. The analyses show two different categories of texts and teaching practices. The hierarchically composed texts are characterized by hierarchies concerning the entire text. The sequentially coupled texts are charac­terized by many vague relations between text entities. One conclusion is that the students in the hierarchically composed texts develop knowledge during writing. They make meaning recursively when writing and they seem to grasp the text as a whole in a way they do not in the sequentially coupled ones. In the sequentially coupled texts, pupils seem to develop knowledge mostly before they write the text, rather than during the writing. In the hierarchically composed practice the pupils deepen their knowledge about text. The result can be interpreted as showing that pupils primarily need education about global text levels in order to develop text knowledge and subject knowledge. Teaching practice seems to promote all pupils’ meaning making if the practice is characterized by many interpersonal relations in the chains of spoken and written texts and if pupils learn to write texts that can structure their meaning making in a functional way.
148

The Transcendental Path

Song, Bo 02 January 2019 (has links)
Die vorliegende Arbeit beschäftigt sich mit Kants Projekt der transzendentalen Deduktion der reinen Verstandesbegriffe hinsichtlich ihrer Fragen, Annahmen, und Argumente. Anders als viele Interpreten schlage ich vor, dass Kants Fragestellung in der transzendentalen Deduktion im metaphysischen Sinne meta-semantisch ist. Indem er alle möglichen konkurrierenden Theorien ablehnt, zeigt Kant überzeugend die Notwendigkeit seiner kopernikanischen Lösung und die Plausibilität der Auffassung von „keiner notwendigen Verknüpfung ohne notwendige Instanziierung“. Ich werde argumentiert, dass Kant verschiedene Argumentationsansätze in der transzendentalen Deduktion entwickelt: das Argument aus der Erkenntnis, das Argument aus dem Selbstbewusstsein, das Argument aus dem Urteil und das Argument aus der Wahrnehmung, und dass sie alle in erster Linie nicht im Wesen anti-skeptisch, sondern erklärend sind. Diese von mir vorgeschlagene Interpretation von Kants transzendentaler Deduktion zeigt, wie ernst Kant seinen transzendentalen Weg für notwendig hält und warum Kants Ansatz vor allem als problemorientiert, nicht aber als gründungsmotiviert angesehen werden sollte. / This present work addresses Kant’s project of transcendental deduction of the pure concepts of understanding with regard to its question, assumptions, and arguments. Unlike many interpreters, I propose that Kant’s question in transcendental deduction is meta-semantic in the metaphysical sense. By rejecting all the possible rival theories, Kant convincingly shows the necessity of his Copernican solution and the plausibility of the view of “no necessary connection without necessary instantiation”. I argue that Kant develops different lines of arguments in transcendental deduction: the argument from cognition, the argument from self-consciousness, the argument from judgment and the argument from perception, and that all of them are primarily not anti-skeptical, but explanatory in character. This interpretation of Kant’s transcendental deduction reveals how seriously Kant takes his transcendental path to be necessary and why Kant’s approach should be viewed as problem-oriented, rather than foundation-motivated.
149

Um enfoque da organização composicional de textos bem formados , segundo a Fuvest / Focus on compositional organization of "Well formed" texts according to Fuvest

Castelhano, Telma Cristina da Silva Frasca 10 March 2016 (has links)
Made available in DSpace on 2016-04-28T19:34:04Z (GMT). No. of bitstreams: 1 Telma Cristina da Silva Frasca Castelhano.pdf: 5832237 bytes, checksum: cfac7ff79d546b1edcbf34af81098c6f (MD5) Previous issue date: 2016-03-10 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This work is related to the research line "Text and Discourse in oral and written forms" of Postgraduate Program in Portuguese Language of PUC-SP. The general objective is to contribute to teachers and students regarding the preparation for taking entrance examinations with results that might provide a guideline on textual production of dissertative texts. The specific objectives are: highlight the text sequences and their encrustation on the textual scheme of the texts that are considered as model by the board that corrects the exams of Fuvest; confront the point of view projected by the reduced text proposed by Fuvest as a starting point for the production of essays by the applicant, with the projection of a new point of view selected by the candidate, having as parameter the understanding of the reduced proposed theme, i.e. the strategy used for the opinionated construction; highlight the theming and expansions by semantic progression of essays considered "well written", i.e. referral. The theoretical foundation is based on Textual Linguistics and, more specifically, in Textual Analysis of Discourses. To achieve our goal, we followed the study of textual sequences of Adam (2011) and the studies of Silveira (2012) on the argumentative text of a thesis and two theses. The results of the analyzes indicate that: the hierarchical explanatory sequence is most frequent in the texts published by Fuvest compared with the argumentative sequence; there is semantic progression by theming through the new point of view selected by the candidate / Esta dissertação se insere na linha de pesquisa Texto e Discurso nas modalidades oral e escrita , do Programa de Pós-Graduados em Língua Portuguesa da PUC-SP. O objetivo geral é contribuir com professores e alunos na situação de preparação para prestar o vestibular, com resultados que possam oferecer orientações a respeito da produção de textos dissertativos. Os objetivos específicos são: destacar as sequências textuais e suas incrustações no esquema textual dos textos considerados modelo pela banca corretora da Fuvest; confrontar o ponto de vista projetado pelo texto reduzido proposto pela Fuvest como ponto de partida para a produção das redações pelo candidato, com a projeção de um novo ponto de vista selecionado pelo candidato, tendo por parâmetro a compreensão do tema reduzido proposto, ou seja, a estratégia utilizada para a construção opinativa; evidenciar a tematização e expansões por progressão semântica das redações consideradas bem escritas , ou seja, a referenciação. A fundamentação teórica situa-se na Linguística Textual e, mais especificamente, na Análise Textual dos Discursos. Para atingirmos nossos objetivos, buscamos os estudos das sequências textuais em Adam (2011) e os estudos de Silveira (2012) sobre o gênero dissertativo de uma tese e de duas teses. Os resultados obtidos das análises apontam que: a sequência explicativa hierarquizada é mais recorrente nos textos publicados pela Fuvest que a sequência argumentativa; há progressão semântica por tematização por meio do ponto de vista novo selecionado pelo candidato
150

Structure lexico-syntaxique des locutions du français et incidence sur le combinatoire / Impact of lexico-syntactic structures of French idioms on their combinatory

Pausé, Marie-Sophie 03 November 2017 (has links)
En tant que syntagmes sémantiquement non-compositionnels, les locutions sont des unités lexicales à part entière, qui doivent avoir leur propre entrée dans un modèle du lexique. Elles doivent donc recevoir une définition lexicographique, ainsi qu’une description de leurscaractéristiques grammaticales. De plus, en vertu de leur signifiant syntagmatique, les locutionstémoignent – à des degrés divers – d’une flexibilité formelle (passivation, insertion de modificateurs, substitution de certains constituants, etc.).Notre thèse défend l’idée selon laquelle une description des locutions combinant à la fois l’identification des unités lexicales qui les composent et l’identification des relations de dépendance syntaxique qui unissent les unités constituantes, permettra de prédire leurs différents emplois possibles dans la phrase. Une telle description n’est possible que dans un modèle du lexique décrivant précisément la combinatoire des lexies. Notre recherche, basée sur les principes de la Lexicologie Explicative et Combinatoire, exploite et enrichit les données du Réseau Lexical du Français (RL-fr), ressource en cours de développement à l’ATILF.La thèse a deux principaux apports. Le premier est le développement d’un modèle de description lexico-syntaxique relativement fine des locutions du français. Le second est l’identification et l’étude de différentes variations structurales, syntaxiques et lexicales liées à la flexibilité formelle des locutions. Les variations des locutions sont mises en corrélation avec leurs structures lexico-syntaxiques, mais également avec leurs définitions lexicographiques. Ceci nous conduit à introduire la notion de projection structurale, centrale dans le continuum de la flexibilité formelle des locutions / As semantically non-compositional phrases, idioms are lexical units. Consequently, they must have their own entries in a lexical resource, with a lexicographic definition and grammatical characteristics. Furthermore, because of their phrasal signifier, idioms show – to varying degrees – a formal flexibility (passivization, attachment of modifiers, substitution of components,etc.)Our thesis defends the view that a description of idioms that combine identification of their lexical components and identification of dependency links between these components will permit to predict their formal variations. Such a description is possible only in a model of lexicon that describes precisely combinatorial proprieties of lexical units. Our thesis, based on the Explanatory Combinatorial Lexicology’s framework, exploits and enhances the data of the French Lexical Network (fr-LN). This resource is being developed at the laboratory ATILF (Nancy, France).The thesis makes two principal contributions to the study of phraseology. The first contribution is the development of a precise description of idioms’ lexico-syntactic structures. The second contribution is the indentification and the study of structural, syntactic and lexical variations linked to idioms’ formal flexibility. Idioms’ formal variations are correlated with their lexico-syntactic structures, but also with their lexicographic definitions. This work leads us to introduce the notion of structural projection, that plays a central role in the continuum of idiom’s formal flexibility

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