Cette thèse comporte trois essais sur l'existence de cycles endogènes sous efficacité dynamique et compte deux thèmes. Le premier thème est traité dans le chapitre 2 et aborde la relation entre la structure industrielle et l'émergence de fluctuations endogènes. Le deuxième sujet est examiné dans les chapitres 3 et 4, et tente d'améliorer notre compréhension du rôle du commerce international sur l'existence de cycles endogènes.La première contribution analyse dans quelle mesure l'existence de bien durable et non-durable est associée à l'occurrence de cycles endogènes sous efficacité dynamique. Les résultats indiquent que des cycles endogènes existent si la part de la consommation des jeunes allouée au bien non durable est assez petite. Nous démontrons qu'une politique de stabilisation basée sur des taxes et transferts forfaitaires permet dans un même temps d'augmenter le bien-être des agents et de supprimer l'existence des cycles.La seconde contribution considère un modèle à générations imbriquées à deux facteurs, deux biens et deux pays. Cette approche est basée sur l'hypothèse d'immobilité des facteurs de production entre pays. On suppose également que les pays sont identiques en tout point excepté en leur taux d'escompte. Nous établissons à l'aide d'une simulation numérique que des cycles à deux périodes se propagent d'un pays à l'autre.La troisième contribution se situe dans un cadre proche du modèle du chapitre 3 mais se focalise sur des différences technologiques entre pays. Nous mettons en évidence par le biais de simulations numériques que le commerce international peut générer des cycles à deux périodes qui n'existaient pas en économie fermée. / This dissertation consists of three essays on the existence of endogenous cycles under dynamic efficiency and covers two different topics. The first one developed in chapter 2 addresses the relation between the structure of production and the occurrence of endogenous fluctuations. The second topic is developed in chapters 3 and 4, and tries to better understand the role of international trade on the emergence of sunspot cycles. These chapters explain that international trade may have a destabilizing effect.Chapter 2 examines how the existence of durable and non-durable goods are associated with the occurrence of endogenous cycles with dynamic efficiency. Main results indicate that sunspot fluctuations exist if young agents consume less non-durable goods than old agents. In this context, we show that a stabilization policy based on lump-sum taxes and lump-sum transfers allows to increase the welfare of agents and eliminate the existence of endogenous cycles.Chapter 3 analyzes a two-factor, two-good, two-country overlapping generations model. We assume that countries differ only with respect to their discount rate. We suppose that the factor of production are immobile across countries. Using a numerical simulation, we show that period-two cycles spread from one country to another.Chapter 4 considers a framework similar to the model of chapter 3 but with focus on asymmetric technology. We show through numerical simulations that the opening to international trade can create two-period cycles that can exist in the world economy even though the closed-economy equilibrium in each country is saddle-point stable.

Les arguments du mouvement Critical Legal Studies sur l’indétermination du droit ne sont doublés d’aucune théorie sur la légitimité des interprétations qu’offrent les juges et donc d’aucun critère juridique pour critiquer une décision. La théorie pluraliste critique du droit, qui prend acte de la pluralité du droit officiel pour redéfinir le phénomène juridique plutôt que de nier qu’il puisse exister, pourrait toutefois fournir un tel critère. En effet, elle présente plusieurs correspondances avec les travaux de Dworkin, qui défend que les citoyens sont en droit d’obtenir les fruits d’une attitude interprétative en germe dans le concept même de droit. Ces deux théories maintiennent que le droit sert à reconnaître la valeur de l’histoire d’un groupe dans sa conception de lui-même tout en soutenant qu’il doit trouver une pertinence contemporaine pour être effectif et légitime. Les pluralistes priorisent toutefois la résonance actuelle des règles de droit et croient que toute communauté est divisée entre diverses définitions du bien. Selon eux, le droit est avant tout un procédé pour penser la conduite humaine et lui conférer un sens, qui dépend des capacités créatrices des citoyens. Chaque règle est alors la cause d’une pluralité d’ordres juridiques concurrents. Suivant ce portrait, seule l’acceptation d’une interprétation par un groupe, sa capacité à lui reconnaître un sens, pourrait rendre cette interprétation légitime. Ce critère nous mène vers un modèle de justice négociée où deux personnes s’adressent à un juge pour développer une lecture en commun du droit, pour identifier une interprétation légitime dans leurs univers juridiques respectifs. / No theory of the legitimacy of judges accompanies the Critical Legal Studies’ arguments on the indeterminacy of law, which entails there are no criteria to identify a legitimate interpretation. Critical legal pluralism, which redefines law to take account of its inherent plurality rather than denying its very possibility on these grounds, could however provide such criteria. Indeed, it presents many resemblances with Dworkin’s theory of law which argues that citizens are entitled to reap the benefits of the interpretative nature of law. Both theories defend that law allows to bridge a group’s past, which is essential to its self-understanding, with the present, and both insist that law must be made to appear relevant in the present. Pluralists however prioritize the current significance of law and stress that communities are split by a variety of definitions of the good. According to them, law is mainly a process to think about human conduct and grant it meaning, and it depends as such on citizens’ creative capacities. Accordingly, only an interpretation that is accepted by a group and seen as meaningful can be considered legitimate. This criterion forces us to consider a form of negotiated justice, where two persons consult a judge to develop a common reading of a rule which would be legitimate in each person’s legal universe.

The thesis Darkness as a Metaphor in Film Noir explores the theme of darkness in film noir. Darkness is not merely formal, but also metaphorical communication vehicle, which works as a semantic framework and therefore when "reading" interpretive efforts have to be expended. In question of theory the thesis is based on Paul Ricoeur's living metaphor that transmute existing meanings and causes interpretive activities, as well as on conceptualization of the text openness towards the recipient, which is represented by theories of Roman Ingarden's places of indeterminacy, Wolfgang Iser's gaps, and Umberto Eco's open work. The hypothesis is the presumption that film noir can be understood in a way that it brings to viewers a change of perception, or a new visual experience, which was not present in cinema until then and which leads to the perception of "third sense". The thesis provides analyses of film noir movies and highlights their specific narrative and stylistic elements. The research also refers to the history of darkness in visual culture, while asking whether the traditional stereotypes can be separated from the inevitable sensual experience.

Leo Brouwer's Sonata Mitología de las Aguas No. I for flute and guitar, first published in 2017, has taken its place as an important twenty-first-century addition to the flute and guitar duo repertory. I provide a brief historical context for the work, followed by preparation guides for guitar alone and duo passages. My preparation guides include exercises and rehearsal strategies, focusing on those passages of the work that include controlled indeterminacy. The study of indeterminacy in music is unusual in the pedagogy of the classical guitarist; this leaves guitarists unprepared for dealing with pieces, especially chamber works, that use improvisation or aleatoric music as a primary element. I take a multifaceted approach to facilitate the realization of the indeterminate sections of the work; this includes demonstrations of my traditional music notation transcriptions and other rehearsal strategies and the application of music performance study systems by James Thurmond and Marcel Tabuteau. This document aims to provide guidance to creating an organic, natural aesthetic in the actualization of Brouwer's groundbreaking work.

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The dissertation critically examines and compares the decisions of the Constitutional Court and the High Courts in cases dealing with the right to life, as contained in section 11 of the Constitution of South Africa Act 108 of 1996. The dissertation analysis the issues of adjudication and the concept of justice in perspective. The main question is as follows: Are the Constitutional Court decisions objective, based on the interpretation of the constitutional text, or do they rather reflect the individual judge(s) personal perspective(s) or preference(s). The purpose of this dissertation is to undertake a comparative study and analysis of the Constitutional Court decisions on the right to life, same aspect from different perspective, and show that the right to life is not given proper effect to on account of the subjective approach to its interpretation undertaken by the judges. It examines and scrutinises the Constitutional Court’s adjudication process. It found that the law is indeterminable, because the court’s decisions are not based on the interpretation of the law, but on the individual judges’ background and personal preferences. This is so because the court uses the majority rule principle in its decisions: The perception of the majority of the judges becomes a decision of the court. It is argued that when taking a decision a judge does not apply the law but instead uses the law to justify his predetermined decision on the matter. The conclusion supports the critical legal scholars’ theory relating to the indeterminacy of the law. It tests the objectivity of the judges using their own previous decisions. / Criminal & Procedural Law / LLM

The dissertation critically examines and compares the decisions of the Constitutional Court and the High Courts in cases dealing with the right to life, as contained in section 11 of the Constitution of South Africa Act 108 of 1996. The dissertation analysis the issues of adjudication and the concept of justice in perspective. The main question is as follows: Are the Constitutional Court decisions objective, based on the interpretation of the constitutional text, or do they rather reflect the individual judge(s) personal perspective(s) or preference(s). The purpose of this dissertation is to undertake a comparative study and analysis of the Constitutional Court decisions on the right to life, same aspect from different perspective, and show that the right to life is not given proper effect to on account of the subjective approach to its interpretation undertaken by the judges. It examines and scrutinises the Constitutional Court’s adjudication process. It found that the law is indeterminable, because the court’s decisions are not based on the interpretation of the law, but on the individual judges’ background and personal preferences. This is so because the court uses the majority rule principle in its decisions: The perception of the majority of the judges becomes a decision of the court. It is argued that when taking a decision a judge does not apply the law but instead uses the law to justify his predetermined decision on the matter. The conclusion supports the critical legal scholars’ theory relating to the indeterminacy of the law. It tests the objectivity of the judges using their own previous decisions. / Criminal and Procedural Law / LL. M.

本篇論文試圖藉由比較一個產業生產技術為固定規模報酬的經濟體系，如何因外部因素的影響而改變其動態調整方式。在此考慮的外部因素有資本移動的開放與否、生產要素的外部性、及政府對要素報酬的課稅。考慮各種因素後，所得出的結論為在生產函數為Cobb-Douglas型式且產業生產技術為固定規模報酬的情況下： 1.多重均衡路徑在資本帳封閉時期唯有效用函數為特例時才能使其出現，但在資本自由移動時期對於所有的效用函數型態皆會成立。 2.其他條件保持不變之下，單獨存在生產要素外部性或是對要素所得課稅皆可使體系存在多重均衡路徑。 3.其他條件保持不變之下，若生產要素外部性與要素所得稅皆同時存在時，可使體系存在唯一的穩定馬鞍路徑。

Our understanding of the physical world has evolved drastically over the last century and the microstructure described by subatomic physics has been found to be far stranger than we could previously have envisaged. However, our corresponding model of experience and its structure has remained largely untouched. The orthodox view conceives of our experience as made up of a number of different simpler experiences that are largely independent of one another. This traditional atomistic picture is deeply entrenched. But I argue that it is wrong. Our experience is extraordinarily rich and complex. In just a few seconds we may see, hear and smell a variety of things, feel the position and movement of our body, experience a blend of emotions, and undergo a series of conscious thoughts. This very familiar fact generates three puzzling questions. The first question concerns the way in which all these different things are experienced together. What we see, for example, is experienced alongside what we hear. Our visual experience does not occur in isolation from our auditory experience, sealed off and separate. It is fused together in some sense. It is co-conscious. We may then ask the Unity Question: What does the unity of consciousness consist in? The second question is the Counting Question: How many experiences does a unified region of consciousness involve? Should we think of our experience at a time as consisting in just one very rich experience, in a handful of sense-specific experiences, or in many very simple experiences? How should we go about counting experiences? Is there any principled way to do so?The third and final question, the Dependency Question, concerns the degree of autonomy of the various different aspects of our unified experience. For example, would one's visual experience be the same if one's emotional experience differed? Is the apparent colour of a sunset affected by the emotional state that we are in at the time? I offer a new answer to the Unity Question and argue that it has striking implications for the way that we address the Counting Question and the Dependency Question. In particular, it supports the view that our experience at a time consists in just one very rich experience in which all of the different aspects are heavily interdependent.

Erika Cudworth's Developing Ecofeminist Theory provides a helpful foundation for a non-essentialist, properly intersectional ecofeminist account of oppression, marginalization, and domination, but her rejection of what she refers to as "postmodernism" appears to be based on a misreading of Judith Butler. I attempt to provide a synthesis of Cudworth's framework with Butler, particularly through the use of Karen Barad's agential realism, in order to provide possibility for new alliances between ecofeminism and other anti-oppressive frameworks. I then examine what it might look like to do ecofeminist praxis, given the complex view of agency, ontology, and intersectionality rendered by such a synthesis. I draw from bicycling as an example from which to extrapolate what it means to resist oppression, and then draw from the Philosophy for Children movement to consider what such resistance might look like within the classroom. This dissertation thus attempts to move from theory to practice, recognizing that "the real world" is both always at hand and also subject to performative deconstruction.