From nuclear physics to semiconductor manufacturing: the making of ion implantation

This article examines the emergence of ion implantation as a major semiconductor manufacturing process from the early 1960s through the late 1970s. Ion implantation techniques originated in nuclear physics research and were first employed to make solar cells for military satellites at the Ion Physics Corporation (IPC). This work at IPC inspired a research group at Sprague Electric to use ion implantation techniques to make transistors. Sprague's process development work, and its key finding that ion implantation enabled the control of critical transistor characteristics, were both exploited by Mostek, a semiconductor start‐up funded by Sprague. Mostek's engineers incorporated ion implantation into their manufacturing process to produce a string of integrated circuits that other firms could not make. Mostek's market success encouraged semiconductor firms to embrace ion implantation in the early and mid 1970s. By the end of the decade, ion implantation was used in the manufacture of virtually all advanced integrated circuits. This article improves our understanding of the development and adoption of semiconductor, and more generally high technology, manufacturing processes. It also advances our knowledge of the ways in which new technologies developed in the Cold War context made their way into the manufacturing economy.     

Saul le nazir ou la Legende d'un roi

Si nous apportons de l'attention a certaines difficultes presentes en 1 Samuel au lieu de les contourner par des approches synchroniques, on identifie des indices qui, mis en relation, peuvent nous permettre de remonter a une legende de Saul. Loin de commencer en 1 Samuel 9-10, le proto-cycle du roi debutait des le chapitre 1 pour se terminer au chapitre 14, tout en englobant le recit du coffre de Yhwh: dans cette legende, Saul etait un nazir qui reprit le coffre a Gibea dans le but de vaincre les Philistins.     

Actualité

This article critically examines the first instances of homosexuality in French youth literature in the 1990s. It starts with a literature review of the fictional texts published specifically for a youth audience, around four key themes: same-sex love stories between teenagers; adult homosexuality and homoparentalité; HIV/AIDS; coming out and homophobia. This review is followed by an analysis of the factors accounting for the appearance and development of homosexuality (through LGBT characters, feelings and situations) in French youth literature in the last decade of the twentieth century. The final part of the article discusses the importance and political function of youth literature with regards to LGBT issues in the French context.     

Coordinating Transport and Urban Planning: From Ideologies to Local Realities

In Europe, the idea that coordinating transportation and urban planning is a necessary condition for setting sustainable urban development into motion has spread throughout academic and professional circles. While this concern is not new, the objectives underlying transport and urban planning coordination have deeply changed over the last decades. How have local authorities translated the requirements and objectives of national laws? How have they accounted for the evolution of these global objectives? What factors explain innovation and continuity in the relationship between land use planning and transport policies? In a comparative research between Switzerland and France, we addressed the question of political change by reconstituting the “trajectories” of four urban areas: Geneva and Bern in Switzerland and Strasbourg and Bordeaux in France. We have described the policy paths of these urban areas since the end of the 1960s by focusing on the contents of master plans, the principal technical solutions and projects that have been implemented, and the means of inter-sectorial coordination used. For each case, factors of change or inertia have been identified by focusing on three main variables that are often studied alternatively in public policy analysis: ideas, institutions and interests.     

Le Concept de « Démocratie Raciale » dans L’Histoire Intellectuelle Brésilienne

This article aims to reconstruct the history of the term “racial democracy” in Brazilian sociological literature. This term, usually associated with the idea of “myth”, is used in many studies of race relations without little definition or clarity. This article retraces its origins, in particular by showing that the concept is not the invention of Gilberto Freyre. It then examines the evolution of its use with particular emphasis on Unesco’s research in the 1950s and the texts of Florestan Fernandes in the 1960s.     

Ethnic Performance and the State in Laos: The Boun Greh Annual Festival of the Khmou

Following the 1975 revolution, the Laotian statesmen adopted a modernising discourse that targeted “backward” traditions as undesirable. But since the 1990s, authorities have mitigated this standpoint, distinguishing “good” from “bad” traditions according to their compatibility with the program of national development, and professing their will to (re)instate the former as suitable expressions of culture in a multi-ethnic nation. This is manifest everywhere from the National Constitution to TV shows and ethnic catalogues. This paper analyses the implementation of these principles through the case of the boun greh New Year festival, an invented ethnic tradition of the Khmou, the largest ethnic minority in Laos. The article demonstrates that this implementation has consequentially implied the adoption of a grammar of national ethnicity; that this official framework paradoxically allows the Khmou to articulate demands for better recognition of their group; and that this process does not mute expressions of “cultural intimacy” at variance with this matrix. The official frame of ethnicity has been eventually adopted by the Khmou, but this state effect has multiplied the layers of expressed ethnicity: it cannot be equated with a unilateral regimentation that would deprive the Khmou of their agency.     

ESR dose response of Al center measured in quartz samples from the Yellow River (China): Implications for the dating of Upper Pleistocene sediment

The ESR dating method requires to describe the evolution of the ESR signal intensities vs. increasing gamma doses, then to extrapolate the equivalent dose of radiation received by the sample since its deposition using mathematical fitting. The function classically used to describe the growth curves of ESR aluminium signal in quartz was recently discussed and challenged for Lower Pleistocene sediments. In the present work, some alluvial sediments sampled in Upper Pleistocene fluvial terraces of the Yellow River system (China) permit us to test the application of another extrapolation function (linear + exponential) recently proposed for Lower Pleistocene sediments. The equivalent doses obtained here for the recent deposits of the Yellow River system and the corresponding ages are promising and indicate the potential of ESR to date quartz deposits from Upper Pleistocene times.     

Notice of an Example of Decorative Coloured Brickwork in the Neighbourhood of Rouen

The Mycenaean world of the late Bronze Age was one of domination and expansion. Such expansion can be seen in the distribution of Mycenaean ceramics in the eastern and western Mediterranean basin. In contrast to the west, Mycenaean culture in the east came into contact and perhaps conflict with well established cultural traditions and civilizations which had achieved a marked degree of sophistication. These native cultural traditions effectively limited the external growth of the Mycenaean world to the coastal fringes of the Near East. However, the impact of Mycenaean culture is evident, especially in the adaptation and imitation of ceramic styles and motifs typically classified as Mycenaean. Such influence is readily seen in south-western Turkey as Mycenaean cultural traditions penetrated inland to distant inland sites in the lower Maeander river valley.