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.     

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.     

Pierre de Villars: An Ormiste after the Fronde

The historiography of the Fronde (1648-1653) suffers from apaucity of social studies, such that the civil war which toreFrance apart during the minority of Louis XIV is usually presentedas a vain reaction against the rise of absolutism. What canthe fate of the Frondeurs after 1653 tell us in this regard?Pierre de Villars was of the main leaders of the Orméeof Bordeaux. The reconstruction of his career, reflected inthe social connotations of the titles he bore, proves that inspite of the solidity and strength of the protection he enjoyed,he had to pay for defeat by abandoning his earlier ambitions.This outcome alters the perspectives and modifies the analysesthat have traditionally been advanced where these events areconcerned.     

Geoarchaeology of Beirut's ancient harbour,Phoenicia

This paper presents geoarchaeological results from the ancient harbour of Beirut (Lebanon). As at Sidon, knowledge of Beirut's ancient tell has advanced significantly over the past decade, thanks namely to redevelopment of the city centre and excavations centred on the modern port. In spite of this research, understanding of the city's coastal palaeoenvironments during antiquity is poor. Buried Iron Age harbourworks presently 300 m from the sea attest to pronounced coastal changes during the past 3000 years. These processes have been significantly accentuated during the last two centuries by redevelopment of the port, which remains in use some 5000 years after its foundation. Here we elucidate the coastal stratigraphy east and west of the Bronze Age tell to yield new insights into the evolution of the Beirut seaboard, in addition to the complex history of human–environment interactions. These chronostratigraphic data are subsequently used to (1) precisely locate the main anchorage haven during antiquity; and (2) propose a chronology for its evolution.