Includes the full and summary reports of State of the Tasmanian Wilderness World Heritage Area: an evaluation of management effectiveness, "bonus material ... and papers describing the management evaluation system."--Container insert. / Title from home page (viewed on June 9, 2005). Full and summary reports also available in print and on the internet.

Le modèle du tas de sable est un modèle de diffusion discret et isotrope introduit par les physiciens Bak, Tang et Wiesenfeld comme illustration de la criticalité auto-organisée. Pour tout graphe, souvent supposé fini, Dhar a formalisé de nombreuses propriétés simplifiant son analyse. Cette thèse propose des études de ce modèle sur la grille bidimensionnelle usuelle et certains de ses sous-graphes également infinis que sont les bandes bi-infinies de hauteur finie. Des approximations du comportement de la pile de sable peuvent se rapprocher de certains modèles de bootstrap percolation avec un support de stabilisation rectangulaire. Les lois sur son demi-périmètre peuvent se décrire à l’aide de statistiques sur les permutations. Un sous-produit de ce travail fait apparaître une différence de deux séries génératrices comptant des permutations selon deux statistiques mahoniennes classiques dont est extrait un polynôme à coefficients entiers et surtout positifs. La suite de cette thèse revisite dans le cadre de ces graphes infinis, des structures jusque-là bien définies uniquement dans le cas des graphes finis, notamment la récurrence. Dans le modèle sur une bande de hauteur finie H, l’existence donnée par Járai et Lyons d’automates finis reconnaissant les configurations récurrentes lues colonne par colonne est étendu par une construction explicite d’automates avec un nombre moindre d’états, se rapprochant de la conjecture de Gamlin. Dans une seconde approche, l’étude se concentre sur les configurations sur la grille entière qui sont périodiques dans les deux directions. Le puits, un sommet du graphe garantissant la terminaison de la stabilisation, est placé à l’infini dans une direction de pente rationnelle. Ceci permet à la fois de préserver la bipériodicité et de proposer une forme affaiblie du critère de Dhar caractérisant ainsi par un algorithme effectif les configurations récurrentes. Ces configurations récurrentes bipériodiques sont des candidates naturelles pour être les éléments de sous-groupes finis de l’éventuel groupe du tas de sable sur la grille. Des éléments de construction de cette loi de groupe donnent expérimentalement quelques sous-groupes finis. / The sandpile model is a discrete model for diffusion of grains on a graph introduced by physicists Bak, Tang and Wiesenfeld as an illustration for self-organised criticality. For any finite graph, Dhar identified many of its numerous structures which simplify its analysis. This thesis focus on the usual square lattice and its subgraphs which are strips of height H, both notions of infinite graphs. Approximations on the behaviour of the stabilisation of a large stack of grains at the origin of the square lattice lead to some random distribution of grains, which stabilisation is connected to some models of bootstrap percolation where modified vertices by this stabilisation forms a rectangle. The laws of the half-perimeter of this rectangle are described by statistics on permutations. As a byproduct, the difference between the generating functions over some permutations of two classical mahonian statistics on permutations appears to mainly be a polynomial with coefficients which are integers and especially positive. Then, this thesis visits in the case of the studied infinite graphs some well-defined structures on finite graphs, in particular the recurrence. In the model on an horizontal strip of height H, we extend the existence of finite automata recognizing recurrent configurations read column by column presented by Járai and Lyons to new automata with significantly less states and these numbers are closer to a conjecture due to Gamlin. An implementation leads to explicit automata for heights 3 and 4 while up to now only the case 2 was obtained by hand. In a second approach, we consider the configurations on the twodimensional square lattice which are periodic in two directions. We suggest to place the sink ensuring that the stabilisation ends at infinity in a direction of rational slope which allows to preserve biperiodicity and a weaker form of Dhar criterion for recurrent configurations. Hence we obtain an effective algorithm defining recurrent configurations among the biperiodic and stable configurations. These biperiodic and recurrent configurations are natural candidates for being the elements of finite subgroups of the hypothetical group on configurations of the sandpile model on the square lattice. We discuss some notions allowing the definition of the law of such a group and experimentally provide some finite subgroups.

Les travaux décrits dans cette thèse portent sur le problème de vérification des systèmes avec espaces d’états infinis, et, en particulier, avec des structures de données chaînées. Plusieurs approches ont émergé, sans donner des solutions convenables et robustes, qui pourrait faire face aux situations rencontrées dans la pratique. Nos travaux proposent une approche nouvelle, qui combine les avantages de deux approches très prometteuses: la représentation symbolique a base d’automates d’arbre, et la logique de séparation. On présente également plusieurs améliorations concernant l’implementation de différentes opérations sur les automates d’arbre, requises pour le succès pratique de notre méthode. En particulier, on propose un algorithme optimise pour le calcul des simulations sur les systèmes de transitions étiquettes, qui se traduit dans un algorithme efficace pour le calcul des simulations sur les automates d’arbre. En outre, on présente un nouvel algorithme pour le problème d’inclusion sur les automates d’arbre. Un nombre important d’expérimentes montre que cet algorithme est plus efficace que certaines des méthodes existantes. / This work addresses verification of infinite-state systems, more specifically, verification of programs manipulating complex dynamic linked data structures. Many different approaches emerged to date, but none of them provides a sufficiently robust solution which would succeed in all possible scenarios appearing in practice. Therefore, in this work, we propose a new approach which aims at improving the current state of the art in several dimensions. Our approach is based on using tree automata, but it is also partially inspired by some ideas taken from the methods based on separation logic. Apart from that, we also present multiple advancements within the implementation of various tree automata operations, crucial for our verification method to succeed in practice. Namely, we provide an optimised algorithm for computing simulations over labelled transition systems which then translates into more efficient computation of simulations over tree automata. We also give a new algorithm for checking inclusion over tree automata, and we provide experimental evaluation demonstrating that the new algorithm outperforms other existing approaches.

京都大学 / 0048 / 新制・課程博士 / 博士(工学) / 甲第17961号 / 工博第3809号 / 新制||工||1583(附属図書館) / 30791 / 京都大学大学院工学研究科マイクロエンジニアリング専攻 / (主査)教授 小寺 秀俊, 教授 中部 主敬, 教授 岩田 博夫 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM

Made available in DSpace on 2015-04-14T13:47:35Z (GMT). No. of bitstreams: 1 433429.pdf: 2714251 bytes, checksum: 13e8d2a9f5f3ff8a83b56e842167a0b1 (MD5) Previous issue date: 2011-08-29 / A presente disserta??o procura sistematizar uma investiga??o que aborde a hist?ria social da m?sica nas Miss?es Jesu?ticas do Rio da Prata entre 1609 e 1768. Foram considerados aspectos de como se desenvolveu a pr?tica musical nas miss?es meridionais; o papel social da m?sica no projeto missioneiro; quest?es a respeito da normatiza??o do tempo e da educa??o musical; e uma progressiva ascens?o social dos m?sicos, discutindo infer?ncias acerca do of?cio art?stico como forma de reconhecimento no espa?o missional. Para tanto, analisou-se a consolida??o pol?tico-administrativa e estrutural dos Trinta Povos como potencializadora para a diferencia??o de grupos sociais naquele espa?o, e a din?mica da pr?tica musical como catalisadora de valores e interesses para a manuten??o dos povos nativos em redu??o. Constatou-se assim, que as incid?ncias em documentos e na historiografia de que se tornar m?sico possu?a um car?ter de status podem se confirmar numa pesquisa de vulto, e que o ineditismo do tema pode abrir espa?o para a explora??o de um novo objeto de estudo

Made available in DSpace on 2015-04-14T13:48:30Z (GMT). No. of bitstreams: 1 397384.pdf: 192236 bytes, checksum: 8c9dce6673543470935b9e4bff3e895b (MD5) Previous issue date: 2007-11-06 / Este estudo se dedica ? din?mica das popula??es missionais do Paraguai Eclesi?stico em per?odos de crises, particularmente durante epis?dios relacionados ?s fomes, epidemias e guerras. As diversas articula??es identit?rias e os m?ltiplos caminhos escolhidos pelos ind?genas dos povoados demonstram o quanto as crises puderam servir de est?mulo ? gera??o de debates com os jesu?tas sobre importantes pr?ticas e cren?as. Com isso, aquelas popula??es participavam de forma ativa na elabora??o de uma pastoral, ou seja, um conjunto de vers?es e propostas eficientes ou criativas, com freq??ncia amb?guas ou tensas, voltadas ? constru??o de um modo de vida conectado ou vi?vel ao mundo colonial em que se envolviam

Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2018-04-12T17:21:23Z No. of bitstreams: 1 LAIS DA SILVA LOUREN?O.pdf: 3680367 bytes, checksum: b27c93094653f6877ebbe136d185e51d (MD5) / Made available in DSpace on 2018-04-12T17:21:23Z (GMT). No. of bitstreams: 1 LAIS DA SILVA LOUREN?O.pdf: 3680367 bytes, checksum: b27c93094653f6877ebbe136d185e51d (MD5) Previous issue date: 2017-12-11 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The present research, looks for analyze the trajectory of Jesuit clergy, settled down in Itu since the ?return? of the Order in 1856 to 1918, when themselves moved to S?o Paulo. Before, as one of the most important shelters of the regalist clergy formation ? like Diogo Ant?nio Feij? ? Itu, became one of the focal point of Jesuits? setting in the moment of the Order?s return to Brazil. This fact reveals itself inside the ultramontane revolts context, starting in 1844, when the priority guidelines was the normalization of clergy formation, the affirmation papal infallibility and the subordination of the church to Rome. Those remodels were realized through the actions from different people, including the laymen ? presents inside the Christian brotherhood ? and religious orders, that settled in Brazil since the second half of XIX century, as well. Between of them, the Jesuits had a remarkable role inside south of Brazil and then, in Itu small village, where it used to be the stage of ultramontane actions. Using the background of that moment, when happened the transition related of the mindset changing about the church and its relationship with the state ? process called ?Romanization? by historiography ? this research, attempts to understand which were the methods of Itu's Jesuits Clergy, figuring out the intern strategies suggested by them and between them which ones, the education and the media were the most fundamental ones. Through the analyze of the religious speech proposed by Orlandi (1983), it looks to comprehend the articulations between the fundamental elements of Order, the instructions from Rome (the dictates of Pope Pio IX, since the Encyclical Quanta Cura by the September convention od 1864, followed by Syllabus Errorum) and, the local contingencies of Itu?s society. It still aims observing the conflict of the dynamic between the representative of the Order and the power instances in local and provincial aspects, minding this action did not restrict only the religious field, ?cause this relation was determined also by the deep and complex relationship of religion and politics as Pierre Bourdieu alerts. In the same way, seeks to understand how the doctrine aspect, based in the order tradition, was modeled and influenced by new representative ideals in occidental modernity, as the progress, the science and the education. Therefore, this research shall collaborate with the comprehension of the assumed directions by ultramontanes reforms happened in Brazil during the XIX century, and the problematization of concepts solidified in historiography about the ?Romanization? process. / A presente pesquisa busca analisar a trajet?ria dos cl?rigos jesu?tas instalados em It?, desde o retorno da Ordem, em 1856, at? 1918, quando transferem-se para S?o Paulo. Antes um dos principais redutos da forma??o regalista de cl?rigos ? como de Diogo Antonio Feij? ?, It? tornou-se um dos locais de fixa??o dos jesu?tas no momento do retorno da Ordem ao Brasil. Tal fen?meno se insere no contexto das reformas ultramontanas, iniciadas em 1844, cujas principais diretrizes eram: a normatiza??o da forma??o clerical, a afirma??o da infalibilidade papal e a subordina??o da Igreja a Roma. Tais reformas foram realizadas atrav?s da a??o de diversos atores, n?o podendo dispensar a participa??o de leigos ? presentes nas irmandades ? e das Ordens Religiosas, as quais instauraram-se no Brasil a partir da segunda metade do s?culo XIX. Dentre estas, os jesu?tas exerceram papel marcante no sul do Brasil e na ent?o Vila de It?, local que se tornara palco da atua??o ultramontana. Tomando como pano de fundo o momento em que se verificava uma transi??o em rela??o ? orienta??o do modelo de Igreja Cat?lica proposto, bem como de seu relacionamento com o Estado - processo denominado pela historiografia como ?romaniza??o? -, a presente pesquisa buscar? compreender quais as estrat?gias de atua??o adotadas pelos cl?rigos jesu?tas instalados em It?, dentre as quais a imprensa e a educa??o demonstraram-se fundamentais. Atrav?s da an?lise do discurso religioso proposta por Orlandi (1983), buscou-se compreender as articula??es entre os princ?pios fundamentais da Ordem, as orienta??es provindas de Roma (os ditames do Papa Pio IX, a partir da enc?clica Quanta Cura de 8 de dezembro de 1864, seguida pelo Syllabus errorum) e as conting?ncias locais da sociedade ituana. Visa, ainda, observar a din?mica conflitiva entre os representantes da Ordem e as inst?ncias do poder local e provincial, compreendendo que sua a??o n?o se restringiu ao campo religioso, j? que tamb?m fora determinada pelas profundas e complexas rela??es entre este campo e o pol?tico, conforme alerta Pierre Bourdieu. Da mesma forma, visa compreender como o aspecto doutrin?rio, baseado na tradi??o da Ordem, fora moldado e influenciado pelos novos ideiais em voga representativos da modernidade ocidental, tais como o progresso, a ci?ncia e a educa??o. Dessa forma, a presente pesquisa busca colaborar na compreens?o dos rumos assumidos pelas reformas ultramontanas ocorridas no Brasil durante o s?culo XIX, bem como na problematiza??o de interpreta??es consagradas pela historiografia sobre o processo de ?romaniza??o?.

O Transtorno de Ansiedade Social (TAS) consiste em um medo acentuado e persistente de situações sociais ou de desempenho nas quais o indivíduo poderia sentir vergonha. Dentre os transtornos de ansiedade, o TAS é um dos mais prevalecentes, sendo considerado o quinto transtorno mais incapacitante, contudo, a busca por tratamento é muito baixa. Diferentes estudos clínicos randomizados evidenciam que a TCCG apresenta resultados satisfatórios e duradouros, sendo considerada padrão ouro de intervenção para TAS, porém, ainda assim, uma parcela de pacientes com TAS não respondem ao tratamento. Assim sendo, o objetivo deste trabalho foi investigar o efeito de uma intervenção em grupo de exposição com alto custo social em pacientes com TAS sobre variáveis psicológicas e também sobre a qualidade de memória. A intervenção utilizada nesse estudo foi a proposta por Hofmann e Otto (2008). Dentre as variáveis psicológicas estudadas foram avaliadas mudanças em sintomas de ansiedade social, ansiedade, medo da avaliação negativa, esquiva e desconforto social, depressão e sintomas de transtornos psiquiátricos comuns. Participaram desse estudo 58 adultos, compondo três grupos experimentais diferentes: o grupo de comparação sem TAS, que consiste em participantes sem sintomas clínicos, o grupo de comparação com TAS, que são participantes portadores de TAS os quais não realizaram a intervenção durante a pesquisa (grupo lista de espera) e o grupo de portadores de TAS participaram da intervenção (grupo TCCG). Um pesquisador independente ao estudo realizou a distribuição aleatória dos participantes com TAS entre os grupos TCCG e lista de espera. Foram realizadas avaliações no pré e pós-teste através do Inventário de Fobia Social (SPIN), Inventários de Ansiedade e Depressão de Beck (BAI e BDI-II), Escala de Medo da Avaliação Negativa (FNE), Escala de Esquiva e Desconforto Social (SADS), Questionário sobre a saúde do paciente (PHQ-9), Questionário de Autorrelato (SRQ) e teste de falsas memórias. Assim, os resultados encontrados evidenciam que a intervenção alcançou redução significativa nos sintomas de ansiedade social, ansiedade geral, depressão e sintomas de transtornos mentais comuns, mostrando que foi uma intervenção efetiva. Além disso, os escores relacionados à ansiedade geral, depressão e sintomas de transtornos mentais comuns, após a intervenção foram equiparados com o escore obtidos pelo grupo de participantes saudáveis, evidenciando a excelente eficácia do processo de intervenção. A eficácia também pode ser constatada a partir da mensuração do tamanho de efeito grande encontrado no estudo relacionado ao principal instrumento de avaliação de TAS utilizado (SPIN), ou seja, esse estudo evidenciou que a forma psicoterápica utilizada atingiu o objetivo esperado da intervenção considerada padrão ouro. No que concerne às medidas relacionadas à qualidade de memória, a hipótese inicial relacionava-se à teoria de que os indivíduos ansiosos sociais apresentariam um número maior de falsas memórias e/ou uma redução de memórias verdadeiras, porém essa hipótese não foi confirmada. / Social Anxiety Disorder (SAD) consists of a marked and persistent fear of social or performance situations in which the individual could feel shame. Among the anxiety disorders, SAD is one of the most prevalent, considered the fifth most disabling disorder, however, the search for treatment is very low. Different randomized clinical trials show that Cognitive-Behavioral Group Therapy (CBGT) presents satisfactory and long-lasting results, which is considered the gold standard of intervention for SAD, however, a portion of patients with SAD do not respond to treatment. Thus, the objective of this study was to investigate the effect of a group intervention related to high social cost exposure in patients with SAD about psychological variables and memory quality. The intervention used in this study was proposed by Hofmann and Otto (2008). Among the psychological variables studied changes in symptoms of social anxiety, anxiety, fear of negative evaluation, avoidance and social discomfort, depression and symptoms of common psychiatric disorders were evaluated. Fifty-five adults participated in this study, composing three different experimental groups: the comparison group without SAD, which consists of participants without clinical symptoms, the comparison group with SAD, participants with SAD who did not receive intervention during the research (Waitlist control condition), and the group of SAD patients who participated in the intervention. An independent researcher to study distributed randomly the participants with SAD between CBGT or Waitlist condition. Assessments were made at pre and post-test using Social Phobia Inventory (SPIN), Beck Anxiety Inventory (BAI), Beck Depression Inventory (BDI-II), Fear of Negative Evaluation (FNE), Social Avoidance and Distress Scale (SADS), Patient Health-Questionnaire (PHQ-9), Self-Report Questionnaire (SRQ), and false memories test in the three groups. The results showed that the intervention achieved a significant reduction in the symptoms of social anxiety, general anxiety, depression and symptoms of common mental disorders, showing that it was an effective intervention. In addition, the scores related to general anxiety, depression and common mental disorder symptoms after the intervention were similar to the scores obtained by the group of healthy participants, evidencing the excellent efficacy of the intervention process. Efficacy can also be seen from the measurement of the large effect size found in the study evaluated by the main evaluation instrument of SAD used (SPIN), this study achieved the expected goal of the gold standard considered intervention. Concerning measures related to memory quality, the initial hypothesis was that social anxious individuals would present a greater number of false memories and / or a reduction of true memories, but this hypothesis was not confirmed.

O Transtorno de Ansiedade Social (TAS) consiste em um medo acentuado e persistente de situações sociais ou de desempenho nas quais o indivíduo poderia sentir vergonha. Dentre os transtornos de ansiedade, o TAS é um dos mais prevalecentes, sendo considerado o quinto transtorno mais incapacitante, contudo, a busca por tratamento é muito baixa. Diferentes estudos clínicos randomizados evidenciam que a TCCG apresenta resultados satisfatórios e duradouros, sendo considerada padrão ouro de intervenção para TAS, porém, ainda assim, uma parcela de pacientes com TAS não respondem ao tratamento. Assim sendo, o objetivo deste trabalho foi investigar o efeito de uma intervenção em grupo de exposição com alto custo social em pacientes com TAS sobre variáveis psicológicas e também sobre a qualidade de memória. A intervenção utilizada nesse estudo foi a proposta por Hofmann e Otto (2008). Dentre as variáveis psicológicas estudadas foram avaliadas mudanças em sintomas de ansiedade social, ansiedade, medo da avaliação negativa, esquiva e desconforto social, depressão e sintomas de transtornos psiquiátricos comuns. Participaram desse estudo 58 adultos, compondo três grupos experimentais diferentes: o grupo de comparação sem TAS, que consiste em participantes sem sintomas clínicos, o grupo de comparação com TAS, que são participantes portadores de TAS os quais não realizaram a intervenção durante a pesquisa (grupo lista de espera) e o grupo de portadores de TAS participaram da intervenção (grupo TCCG). Um pesquisador independente ao estudo realizou a distribuição aleatória dos participantes com TAS entre os grupos TCCG e lista de espera. Foram realizadas avaliações no pré e pós-teste através do Inventário de Fobia Social (SPIN), Inventários de Ansiedade e Depressão de Beck (BAI e BDI-II), Escala de Medo da Avaliação Negativa (FNE), Escala de Esquiva e Desconforto Social (SADS), Questionário sobre a saúde do paciente (PHQ-9), Questionário de Autorrelato (SRQ) e teste de falsas memórias. Assim, os resultados encontrados evidenciam que a intervenção alcançou redução significativa nos sintomas de ansiedade social, ansiedade geral, depressão e sintomas de transtornos mentais comuns, mostrando que foi uma intervenção efetiva. Além disso, os escores relacionados à ansiedade geral, depressão e sintomas de transtornos mentais comuns, após a intervenção foram equiparados com o escore obtidos pelo grupo de participantes saudáveis, evidenciando a excelente eficácia do processo de intervenção. A eficácia também pode ser constatada a partir da mensuração do tamanho de efeito grande encontrado no estudo relacionado ao principal instrumento de avaliação de TAS utilizado (SPIN), ou seja, esse estudo evidenciou que a forma psicoterápica utilizada atingiu o objetivo esperado da intervenção considerada padrão ouro. No que concerne às medidas relacionadas à qualidade de memória, a hipótese inicial relacionava-se à teoria de que os indivíduos ansiosos sociais apresentariam um número maior de falsas memórias e/ou uma redução de memórias verdadeiras, porém essa hipótese não foi confirmada. / Social Anxiety Disorder (SAD) consists of a marked and persistent fear of social or performance situations in which the individual could feel shame. Among the anxiety disorders, SAD is one of the most prevalent, considered the fifth most disabling disorder, however, the search for treatment is very low. Different randomized clinical trials show that Cognitive-Behavioral Group Therapy (CBGT) presents satisfactory and long-lasting results, which is considered the gold standard of intervention for SAD, however, a portion of patients with SAD do not respond to treatment. Thus, the objective of this study was to investigate the effect of a group intervention related to high social cost exposure in patients with SAD about psychological variables and memory quality. The intervention used in this study was proposed by Hofmann and Otto (2008). Among the psychological variables studied changes in symptoms of social anxiety, anxiety, fear of negative evaluation, avoidance and social discomfort, depression and symptoms of common psychiatric disorders were evaluated. Fifty-five adults participated in this study, composing three different experimental groups: the comparison group without SAD, which consists of participants without clinical symptoms, the comparison group with SAD, participants with SAD who did not receive intervention during the research (Waitlist control condition), and the group of SAD patients who participated in the intervention. An independent researcher to study distributed randomly the participants with SAD between CBGT or Waitlist condition. Assessments were made at pre and post-test using Social Phobia Inventory (SPIN), Beck Anxiety Inventory (BAI), Beck Depression Inventory (BDI-II), Fear of Negative Evaluation (FNE), Social Avoidance and Distress Scale (SADS), Patient Health-Questionnaire (PHQ-9), Self-Report Questionnaire (SRQ), and false memories test in the three groups. The results showed that the intervention achieved a significant reduction in the symptoms of social anxiety, general anxiety, depression and symptoms of common mental disorders, showing that it was an effective intervention. In addition, the scores related to general anxiety, depression and common mental disorder symptoms after the intervention were similar to the scores obtained by the group of healthy participants, evidencing the excellent efficacy of the intervention process. Efficacy can also be seen from the measurement of the large effect size found in the study evaluated by the main evaluation instrument of SAD used (SPIN), this study achieved the expected goal of the gold standard considered intervention. Concerning measures related to memory quality, the initial hypothesis was that social anxious individuals would present a greater number of false memories and / or a reduction of true memories, but this hypothesis was not confirmed.

La lixiviation en tas est une méthode industrielle utilisée pour traiter des minerais à basse teneur consistant en la percolation d’une solution de lixiviation à travers un tas de 6 à 9 mètres de haut afin d’en extraire l’élément d’intérêt. Cependant, la présence de nombreuses fines particules et d’argiles au sein du minerai peuvent causer l’apparition de phénomènes de colmatage dans les tas, diminuant l’efficacité de la lixiviation. Afin de résoudre ce problème, les industries du nickel, du cuivre ou encore de l’uranium agglomèrent le minerai, augmentant ainsi sa granulométrie par le rassemblement des fines particules. Néanmoins, l’agglomération de minerais uranifères ainsi que l’impact de la structure des agglomérats sur la lixiviation reste peu étudiée. Cette thèse a permis de caractériser l’évolution structurale et pétro physique des agglomérats de minerais d’uranium au cours de la lixiviation, d’étudier l’influence des conditions d’agglomération sur la structure des agglomérats résultants et enfin d’étudier la lixiviation des agglomérats à l’échelle du tas, par le biais d’essais en colonnes métriques. De plus, les causes de colmatage ont pu être identifiées comme provenant d’une dégradation mécanique des agglomérats entrainant une réduction de la perméabilité et de la porosité du tas / Heap leaching allows processing low grade ores. Basically, this industrial mining process consists in percolating a leaching solution slowly down through an ore heap of 6 to 9 meters high to extract the metals of interest. However, fine particles and clays are often the cause of clogging within heaps, leading to a decrease of leaching efficiency. To solve this problem, copper, nickel and uranium industry uses agglomeration of the ore particles. This process allows adjusting the particle size distribution by gathering fine particles. However uranium-ore agglomeration and the impact of the agglomerates structure on heap leaching remains poorly understood. The current thesis allowed characterizing structural and petrophysical properties of agglomerates and its evolution during leaching, studying the influence of agglomeration conditions on agglomerates structures and finally upscaling there results at the heap scale, using meter scale columns. Clogging phenomena were especially due to the mechanical degradation of agglomerates, causing a decrease of both heap porosity and permeability