L’objectif de ce travail a été de proposer une méthode de détection de défaut pour le déplacement longitudinal du chariot mobile du Radiotélescope de Nançay. L’importance de l’implémentation d’une procédure de détection des défauts a été mise en évidence grâce à la description des besoins du personnel en charge de la maintenance de cet instrument scientifique. Ce mémoire débute par un état de l’art sur différentes méthodes de diagnostic (détection et isolation des défauts), une analyse critique de ces méthodes est réalisée. Nous rappelons ensuite les notions d’observabilité avant de présenter l’observateur de Newton et l’observateur de Ciccarella. L’extension de ce dernier aux systèmes MIMO est réalisée par la suite. Une comparaison de ces différents observateurs termine le chapitre 2. Le chapitre 3 présente le Radiotélescope de Nançay et plus particulièrement la modélisation du déplacement longitudinal du chariot mobile. Une étude des propriétés du modèle est abordée par la suite. Le dernier chapitre traite de la validation partielle du modèle obtenu au chapitre précédent. Ensuite, l’utilisation des relations de redondances analytiques a permis de mettre en évidence la faisabilité du diagnostic sur l’application. L’utilisation de l’extension de l’observateur de Ciccarella pour le diagnostic permet de réaliser la détection de défaut capteur en utilisant un banc d’observateurs. Le suivi de paramètres du modèle permet de suivre l’évolution du système (vieillissement par exemple) et la détection de défaut actionneurs. Dans l’ensemble, les résultats obtenus permettent de conclure sur la bonne détection des défauts capteurs et actionneurs. / The aim of this work was to propose a fault detection method for the longitudinal displacement of the mobile cart of the Radiotelescope of Nançay. The importance of the implementation of a procedure of detection of the defects was highlighted thanks to the description the needs of the personnel in charge of maintenance for this scientific instrument. This memory begin with a state of the art on various methods of diagnosis (detection and isolation of the default), a critical analysis of these methods is carried out. We point out then the concepts of observability before presenting the Newton observer and the Ciccarella observer. The extension of this last to systems MIMO is carried out thereafter. A comparison of these various observers finishes chapter 2. Chapter 3 presents the Radiotelescope of Nançay and more particularly the modelling of the longitudinal displacement of the mobile cart. A study of the properties of the model is approached thereafter. The final chapter covers validation partial of the model obtained in the preceding Chapter. Then, the use of analytical redundancy relations made it possible to highlight the feasibility of the diagnosis on the application. The use of the extension of the Ciccarella observer for the diagnosis makes it possible to carry out the detection of sensor fault by using a bench of observers. The follow-up of parameters of the model makes it possible to follow the evolution of the system (ageing for example) and the detection of defect actuators. As a whole, the results obtained make it possible to conclude on good detection from the sensor and actuator faults.

No / This paper examines humeral cross-sectional properties in two different samples of later medieval date: a group of blade-injured males from the sites of Towton, North Yorkshire, and Fishergate in the City of York, England, and a comparative group of nonblade-injured males also from the site of Fishergate in York. CT image slices were taken of the humeral shaft at 20%, 35%, 50%, 65%, and 80% from the distal end to investigate population differences in levels and patterns of mechanical loading. Bilateral asymmetry is investigated and comparisons are made with different populations of varying activity levels. Architectural changes such as humeral torsion are also investigated to determine the relationship between architectural changes and biomechanical efficiency. Results show significant differences in diaphyseal robusticity between the Towton sample and the comparative population, as well as significant differences in diaphyseal shape both between limbs within the Towton sample and between blade-injured samples. Population differences were also identified in the level of bilateral asymmetry, further demonstrating the differences in movement and activity patterns both between and within samples. These variations may relate to distinctive, more strenuous weapon use and differences in strenuous movement patterns in the two groups.

This dissertation presents an investigation of the place of the horse in Roman society, within the context of its roles as equus publicus, which derived ultimately from that of the cavalry mount, and race-horse. Consideration of the ceremonial role of the horse provides a clearer understanding of the value placed upon horses and horsemanship in the Roman world, thus permitting inferences to be drawn regarding the role played by the horse in the development of the equester ordo. Evidence is drawn from both literary and archaeological sources to shed light on the management and training of the horses of equestrian Rome. Chariot racing is also re-examined from the perspective of its equine players, and evidence is drawn from various sources to provide a more complete picture of the Roman horse-racing industry as a social structure. The importance of the racehorse in Roman society is examined and the symbolism of the victorious horse as represented in Roman art is discussed. / Classics & Modern European Languages / M.A. (Ancient Languages and Cultures)

This dissertation presents an investigation of the place of the horse in Roman society, within the context of its roles as equus publicus, which derived ultimately from that of the cavalry mount, and race-horse. Consideration of the ceremonial role of the horse provides a clearer understanding of the value placed upon horses and horsemanship in the Roman world, thus permitting inferences to be drawn regarding the role played by the horse in the development of the equester ordo. Evidence is drawn from both literary and archaeological sources to shed light on the management and training of the horses of equestrian Rome. Chariot racing is also re-examined from the perspective of its equine players, and evidence is drawn from various sources to provide a more complete picture of the Roman horse-racing industry as a social structure. The importance of the racehorse in Roman society is examined and the symbolism of the victorious horse as represented in Roman art is discussed. / Classics and Modern European Languages / M.A. (Ancient Languages and Cultures)

La passion des Romains pour les jeux du cirque, et surtout pour les courses de chars, apparaît comme un topos dans la littérature ancienne. Si les auteurs anciens ont maintes fois évoqué l’état d’excitation du public, les jugements moraux et les stéréotypes l’emportent sur toute tentative d’analyse et très peu d’amateurs de courses ont laissé de témoignage, comme la première partie de cette thèse le met en évidence. Il nous a donc fallu dépasser ces préjugés afin d’expliquer les raisons d’un tel engouement. La confrontation des données issues des sources textuelles aux résultats de travaux récents en psychologie des émotions et en sociologie du sport nous a permis de démontrer, dans la seconde partie, le lien entre la passion des jeux et les émotions provoquées par ces spectacles. En effet, cette passion se nourrissait largement des émotions intenses éprouvées par les spectateurs, elles-mêmes conséquence d’un phénomène d’hyperstimulation sensorielle auquel ils étaient soumis depuis leur arrivée aux abords du bâtiment jusqu’à la fin des jeux. Cet engouement pour les ludi circenses avait donc des causes intrinsèques aux spectacles. Face à ce constat et à l’intérêt croissant du pouvoir pour les circenses dès la fin de la République, la troisième partie de cette thèse examine la question de l’instrumentalisation de ces jeux à des fins politiques. Si des chefs d’armées, comme Pompée ou Jules César, comprirent tout le bénéfice qu’ils pouvaient en retirer en terme de popularité et si, à partir d’Auguste, les circenses font partie intégrante de la politique impériale, il serait néanmoins erroné de percevoir les spectateurs du cirque comme une foule manipulée par le pouvoir. Ils jouissaient en ce lieu d’une autorité considérable, non seulement sur le déroulement des jeux, mais aussi à l’égard de l’empereur, à tel point que le rapport de force avec ce dernier pouvait même éventuellement s’inverser. Le cirque a été en effet parfois le cadre de manifestations d’hostilité de la foule à l’encontre de l’empereur ou de ses proches et dans la plupart des cas les manifestants ont obtenu gain de cause. La clémence du prince semble donc avoir été l’usage en ce lieu. Cependant, il convient de ne pas réduire les acteurs de ces mouvements de protestation à la plèbe. Ces manifestations étaient vraisemblablement souvent orchestrées et soigneusement préparées à l’avance, or il nous est apparu que seuls des membres de l’ordre sénatorial ou équestre avaient les moyens humains et logistiques d’y parvenir. / Passion for Roman circus games, and especially for chariot races, appears as a topos in ancient literature. Even if ancient authors frequently evoke the excitement of the audience, this excitement often attracts moral condemnations and stereotypes rather than critical analysis and there are very few testimonies coming from chariot races enthusiasts, as it may be noted in the first part of the thesis. This study aims to overcome these prejudices in order to explain the reasons for such an enthusiasm. In the second part, after confronting data coming from textual sources with what recent works in psychology of emotion and sociology of sport can teach us, we demonstrate the link between passion for the games and the emotions provoked by those spectacles. This passion, indeed, was mainly entertained by the intensity of the emotions, resulting themselves from the sensory overload which the spectators experienced, from the moment they were reaching the circus to the end of the games. This passion may be due to factors intrinsic to the show. Considering this aspect as well as the growing interest of the power for circenses at the end of the Republic, the third part examines the exploitation of the games for political purposes. Even if army leaders, such as Pompey and Caesar, well understood all the benefits they could derive in terms of popularity, and even if the circenses started to be, from Augustus on, an integral part of imperial policy, it would be a mistake to see the spectators simply as a crowd manipulated by political power. It appears that the spectators enjoyed considerable authority over this place, not only in relation to the conduct of the games, but also even in relation to the emperor, insomuch as the power struggle between the emperor and his subjects could sometimes be reversed. On several occasions, indeed, the circus was the scene of the crowd’s hostility against the emperor or his relatives, and in many such cases, the demonstrators were successful. It seems that it was customary for the emperor to show clemency within the circus. However, it is important not to generalise about the participants of protests and not to consider them simply as a plebeian mob. Such protests were in all likelihood often carefully orchestrated and planned in advance; it seems clear that only members of the senatorial or equestrian orders had the human resources and logistical capacity to achieve that.

The Battle of Kadesh fought between the Hittites and Egyptians in Syria is one of the biggest chariot battles in ancient Near Eastern history. Previous research has shown that the significance of the Battle of Kadesh is derived predominately from a tactical and strategic level. This dissertation introduces the idea that although this is a tactical battle, its overall importance comes from applying a holistic approach, in particular, investigating the causes and consequences, alongside the battle. By extending prior work on tactics and strategy to include an identified cause, the Zannanza Affair, and the consequences, the Treaty of Kadesh and the Royal Marriages it makes allowances for a wider evaluation of the battle. Attention is paid to textual, iconographical and archaeological sources to gain a better understanding of the battle. The findings provide support for the argument that the murder of the Hittite prince in the Zannanza Affair led to crucial military innovations and operational changes adopted by the Hittites and Egyptians, which impacted how they fought on the battlefield. While a considerable amount of research has been done on the Hittite and Egyptian military organisations, the role of the elite units on the battlefield has largely not been explored. The Treaty of Kadesh and the Royal Marriages were a critical turning point in Hittite-Egyptian relations offering a strong alliance and unprecedented peace in the ancient Near East. Traditionally, the Battle of Kadesh has been viewed as a tactical battle. However, for further advances, the contribution of this study prompts a rethinking of the latter by placing the operational details of the battle in a broader context encouraging new research on the social, cultural and political aspects, which is crucial for the understanding of the importance of the Battle of Kadesh, on and off the battlefield. / Biblical and Ancient Studies / M. A. (Ancient Near Eastern Studies)