La performance des mécanismes est intimement liée à la précision des surfaces qui composent les liaisons. La démarche habituelle de l'analyse de ces surfaces est basée sur des hypothèses fortes concernant leurs comportements. Ainsi, les défauts de forme et de rugosité sont négligés et les surfaces sont supposées infiniment rigides. L'objectif principal de ces travaux est de développer une méthode permettant d'étudier l'influence des défauts de forme sur les performances des assemblages. Elle repose sur une méthodologie et des outils pour l'identification des défauts qui vont optimiser ou pénaliser les exigences fonctionnelles de l'assemblage. Dans ce manuscrit, deux cas d'étude sont proposés.Dans un premier temps, un montage de type bride (centrage court, appui plan) est étudié afin de valider l'ensemble de la démarche développée. Les outils utilisés reposent essentiellement sur la décomposition et composition modale des défauts, le concept de surface écarts, la recherche de zone d'appui stable ainsi que la quantification des déformations de surfaces de contact basées sur des modèles analytiques ou numériques. L'influence des défauts de forme sur la précision de mise en position est quantifiée par un domaine écart de liaison. Une confrontation entre la démarche théorique et un dispositif expérimental permet de valider l'approche. Par la suite, une liaison sphérique est considérée constituant une prothèse totale de hanche en matériau céramique. Pour ce cas d'étude, l'objectif est d'identifier, au regard des typologies de défauts, leurs conséquences sur l'apparition d'un phénomène sonore assimilable à du grincement appelé le squeaking. La démarche reprend les mêmes étapes que celles utilisées avec l'étude de la bride. Différents dispositifs expérimentaux sont mis en place confirmant la pertinence de cette approche. Des mesures spécifiques apportent des éléments d'analyse et de compréhension sur le comportement dégradé de la liaison. Ce travail de thèse s'inscrit dans une collaboration entre 3 laboratoires : SYMME d'Annecy, I2M-IMC de Bordeaux-Talence, et la société Tural localisée à Marignier (74), laboratoire de recherche industrielle qui travaille sur des implants médicaux.

The research interest is the field of Christianity and culture with specific focus on the interface between the indigenous practice of ilobolo and the Christian faith in South Africa. Comparison and contrasts with other African peoples, especially in the subcontinent, is made. The research is located in Edendale, an urban township of Pietermaritzburg in South Africa. Common wisdom distinguishes between urban and rural Africans whereas under the veneer of urbanisation, the religio-cultural beliefs of Africans on ilobolo remain ingrained almost defying the influence of Westernisation. In the post-apartheid era, ilobolo has become a highly contested issue, strong arguments for and against its retention have been advanced. It is in the light of those complexities that the continued practice of ukulobola and the rituals associated with it are examined. The thesis is partly descriptive but mainly analytical. Consequently, a brief historical background and current practice of ilobolo in an urban setting is offered. The social and religious role played by ilobolo cattle, collectively known as amabheka, is analysed. The central thesis of this work is that ukulobola has continued to be practised among adherents of traditional religions and African Christians. To both it is regarded as a means of establishing and maintaining family ties and, among the former, it is also the accepted means of uniting the respective ancestors From the study it will be apparent that the misuse of ilobolo by those people who make impossible demands on the groom with the consequent commodification of women is due to the fact that such people have a jaundiced understanding of the original purpose and intent of the practice. The study consists of six chapters and a conclusion. Chapter one serves as an introduction to the study. It focuses on technical aspects such as the problem statement, motivation, hypotheses to be tested, theoretical tools used, methodology and a description of the primary site of the research. This leads to a historical chapter based on oral as well as written sources on the origins, purpose and changes that have happened in the practice of ukulobola among AmaZulu. The survey leads to a theological reflection on factors yielded by the historical survey of the evolution of ilobolo. A third chapter is a social and theological critique of the various positions advanced for its continuation or suggestions on why it should be abolished. Chapter four is an assessment of contemporary people's views on ilobolo. The fifth chapter demonstrates how anthropological and theological underpinnings of ilobolo, especially the pivotal role played by cattle, have sustained the practice from pre-colonial times to the present time. Chapter six is the major theological treatise of this study. It looks at issues that emerge when the gospel encounters culture, with ilobolo chosen as a case study. The concluding chapter makes recommendations and gives pointers to future research. I also suggest a liturgy for marriage taking into account ilobolo negotiations. / Thesis (Ph.D.)-University of KwaZulu-Natal, Pietermaritzburg, 2004.

This is a study of the fifteenth-century, “Storie of Asneth,” a late-medieval English translation of a Jewish Hellenistic romance about the Patriarch, Joseph, and his Egyptian wife, Asneth (also spelled Aseneth, Asenath). Belonging to the collection of stories known as The Old Testament Pseudepigrapha and derived from Jewish Midrash, the story was widely read among medieval religious in England in Latin before being translated into the vernacular for devotional purposes. Part of this study considers and identifies the aristocratic female patron (Elizabeth Berkeley) and author (John Walton) of the fifteenth-century Middle English text, based on literary, historical, and manuscript evidence from the sole surviving copy of the text in Huntington Library EL.26.A.13, a manuscript once owned by John Shirley. Also explored is the ritualistic pattern of events in the text (original to its Hellenistic origins) that coincides with ancient female initiation rites as we understand them from recent studies of Greek mythology. Centred in the narrative, culminating Asneth’s liminal seclusion, is her sacred marriage with a heavenly being. The argument suggests that in the Middle Ages this sacred consummation would have been interpreted as the union of God with the soul, similar to the love union in the Song of Songs. In the Christian tradition it is referred to as mystical marriage. Early Christian exegesis supports that Joseph was considered a prefigurement of Christ in the Middle Ages. In her role as divine consort and Joseph’s wife, Asneth would also have been identified as a type of Ecclesia in the Middle Ages—the symbolic bride of Christ. Patterns of female initiation in the story are also reflected in the hagiographical accounts of female saints, female mystics, and the ritual consecration of nuns to their orders, especially where they focus on marriage to Christ. The similarity of Asneth with Ecclesia, and therefore Asneth’s identity as a type of the church in the Middle Ages, is then explored in the context of the theology of the twelfth-century Cistercian prophet, Joachim of Fiore. The thirteenth-century Canterbury manuscript, Cambridge Corpus Christi College MS 288 (CCCC MS 288), which holds a Latin copy of Asneth also contains one of the earliest Joachite prophecies in England, known as Fata Monent. The study suggests Asneth may have held theological currency for early followers of Joachim of Fiore in England. / Graduate

This dissertation compares the family and marriage traditions of the Ashantis of Ghana and Ancient Hebrews. Some common features characterize the two societies, principal among which is the idea that having children is the key purpose of marrieage above love and intimacy. Others are the low status of the wife in the domestic context; endogamy rules based on consanguinity; and payment of bride price. However, the two traditions differ in important areas. For example, the Ashantis follow kinship system based on matrilineal descent, succession and inheritance and the girl child is preferred. The patriarchal system of the Ancient Hebrews invest all authority in the father and the male heirs is preferred. Other defining factor in Ashanti and Pentateuchcal marriage is their religion and belief systems. Much of the marriage traditions seem to be cultural references rather than religious imperatives binding on Christians today. / Biblical and Ancient Studies / Thesis (M.Th.)

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This study aimed to explore how gender is constructed, negotiated and enacted in the customary practice of lobolo. Lobolo, sometimes incorrectly referred to as bridewealth or dowry is a practice that centres around the transference of wealth from the groom or a groom’s family to the bride’s family towards the formalisation of marriage. Framed within an African-centred feminist approach I analyse, through narrative discursive analysis, how 27 men and women ages 27 -71, from Johannesburg and Cape Town account for gender and power dynamics in their narratives of participating in lobolo. The African-centred feminist approach I employ critically engages with historical as well as present-day reproductions of patriarchy, capitalism, heteronormativity and other mechanisms of exclusion that are perpetuated through the cultural practice of lobolo. I show how masculinities and femininities are constituted, negotiated and disputed in the narratives of men and women who have participated in lobolo. By employing an African-centered feminist approach I show how gendered dynamics within the practice are shaped by historical and contemporary social, political and economic factors which enable and constrain the exercise of power in various ways. By exploring lobolo through an African-centered feminist narrative approach I demonstrate how the process is more than simply a transference of wealth but rather a complex practice that is used as an apparatus to exercise and expand power in the different stages of the lobolo process. Within this African-centered feminist approach, I argue that lobolo functions to legitimise particular gender positions that can be adopted through marriage; but it can also be used to challenge and contest these roles. The findings of this study suggested that the different stages and process of lobolo reflect a gendered script, which determines the position that men and women are able to adopt, and that this script sets the parameters for the ways in which these roles may be enacted. I find also that the meanings and descriptions of lobolo are embedded within, and reproduce gendered identities but that these identities are not fixed but rather are constantly renegotiated. I conclude that lobolo is not only a custom for formalising marriages but also a tool used by men and women to perform a range of sometimes contradictory functions, including at times establishing and strengthening hegemonic masculinities and femininities but at other times challenging and dismantling these. / Psychology / Ph. D. (Psychology)

Cette thèse analyse les causes profondes du sous-développement et des inégalités de genre en Afrique Sub-Saharienne. Le premier chapitre teste empiriquement l’hypothèse de Engels (1884) selon laquelle l’origine des inégalités de genre en Afrique serait la domestication historique des bovins. Pour résoudre les problèmes de biais d’endogenéités dans le choix de la domestication des bovins, j’adopte la stratégie des variables instrumentales en exploitant les facteurs géo-climatiques qui prédisent les terres les plus adaptées pour l’élevage des bovins. Les résultats des analyses montrent que les sociétés qui ont historiquement domestiquées les bovins ont eu plus d’inégalités de genre qui persistent jusqu’aujourd’hui. Le deuxième chapitre est co-écrit avec Raphael Godefroy et Joshua Lewis. Dans ce chapitre, nous analysons les effets de court et long termes de la grande peste bovine survenue en Afrique dans les années 1890. Nous utilisons la méthode des doubles différences combinant les différences entre les terres favorables pour l’élevage des bovins et les conditions climatiques contemporaines. Notre étude montre que les sociétés les plus touchées par la peste bovine sont moins peuplés et ont moins de bovins, de plus les descendants de ces sociétés sont aujourd’hui les plus pauvres. Le dernier chapitre analyse comment le genre des frères et sœurs influence l’âge au mariage des femmes. Les analyses basées sur le sexe du deuxième enfant révèlent que les femmes qui ont une petite sœur se marient plus tôt, ont plus d’enfants et sont moins éduquées. Les effets sont plus accentués dans les groupes ethniques qui utilisent la dot comme norme culturelle du mariage. / This dissertation investigates the deep roots of differences in gender roles and development across societies in Sub-Saharan Africa. Chapter 1 examines the deep origins of differences in gender roles in Africa. I test empirically Engels (1884) hypothesis, that the origin of differences in gender roles in Africa was the historical domestication of cattle. To address potential endogeneity in historical cattle adoption, I adopt an instrumental variables approach that leverages geo-climatic factors affecting the suitability of lands for cattle-raising. I find empirical support for Engels (1884) hypothesis. Further, the results show that these differences in gender roles have persisted to present day. In chapter 2, which is co-authored with Raphael Godefroy and Joshua Lewis, we study the short- and long-run consequences of the 1890s African Rinderpest Epizoodic. We adopt a difference-in-differences strategy that combines differences across ethnic homelands in cattle-suitability with contemporaneous local drought conditions to identify ethnic groups that were more or less exposed to the outbreak. We find that the societies exposed to rinderpest experienced relative decreases in cattle-ownership in the decades after the outbreak. We uncover large relative long-run decreases in wealth among descendants of affected ethnic groups. These persistent economic losses appear to be partially driven by distressed migration. In chapter 3, I investigate how sibling gender composition affects women’s transition to first marriage in sub-Saharan Africa. To address potential endogeneity in the final sibling gender composition, I exploit the random assignment of the second child’s gender in household with at least two children. I find that female with a younger sister get married younger, with negative consequences for her education and literacy. The effects are stronger within countries that traditionally pay bride price at marriage.

For over one hundred years, the music-going public has reflected on the life and influence of America's “March King,” John Philip Sousa. His popularity as a bandleader was unprecedented, and his reputation as an entertainer captivated the imagination and intrigue of a nation. Sousa's fame was attained through the high standards showcased by his unparalleled concert organization, the Sousa Band. He is interminably linked to the march, and for his seventy-seven years he proved to be its prolific and outspoken champion. Sousa's songs, however, were among his favorite works, and their presence on concert programs reinforced a variety of programming that was the hallmark of his success. The Sousa Band served as a cultural and musical ambassador, and annual transcontinental tours brought music to people where they lived. Sousa's songs were highly anticipated concert features, and were presented by soprano soloists known as the “Ladies in White.” A chamber winds instrumentation, rather than employment of the full-forces of the Sousa Band, allowed for an appropriate musical balance between instruments and voice. The “Forgotten Songs of John Philip Sousa Project” involved the research, editing, and performance of songs housed in the Sousa Archives for Band Research at the University of Illinois. Three songs discussed in this study, “Maid of the Meadow,” “The Snow Baby” from The Bride Elect, and “I've Made My Plans for the Summer” have been edited and performed in their intended setting for chamber winds and soprano. The songs in the Sousa collection resonate with a quintessential essence that recalls an American spirit and artistry that are closely linked with John Philip Sousa and his legendary band.

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