Indiens Yanomami et chercheurs d'or au Brésil : le massacre de Haximu

Albert Bruce. Indiens Yanomami et chercheurs d'or au Brésil. Le massacre de Haximu. In: Journal de la Société des Américanistes. Tome 80, 1994. pp. 250-257

Marginal analysis of longitudinal count data in long sequences: Methods and applications to a driving study

Most of the available methods for longitudinal data analysis are designed and validated for the situation where the number of subjects is large and the number of observations per subject is relatively small. Motivated by the Naturalistic Teenage Driving Study (NTDS), which represents the exact opposite situation, we examine standard and propose new methodology for marginal analysis of longitudinal count data in a small number of very long sequences. We consider standard methods based on generalized estimating equations, under working independence or an appropriate correlation structure, and find them unsatisfactory for dealing with time-dependent covariates when the counts are low. For this situation, we explore a within-cluster resampling (WCR) approach that involves repeated analyses of random subsamples with a final analysis that synthesizes results across subsamples. This leads to a novel WCR method which operates on separated blocks within subjects and which performs better than all of the previously considered methods. The methods are applied to the NTDS data and evaluated in simulation experiments mimicking the NTDS.Comment: Published in at http://dx.doi.org/10.1214/11-AOAS507 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org

On yanomami warfare : rejoinder

Critique d'interprétation sociobiologique de la guerre yanomami proposée par l'anthropologue américain N.A. Chagnon (2ème partie). (Résumé d'auteur

AGRICULTURAL LOAN EVALUATION WITH DISCRIMINANT ANALYSIS

Agricultural Finance,

The use of medicinal plants by the Yanomami indians of Brazil

The results of the first detailed study of the use of medicinal plants by a group of Yanomami Indians are presented. Contrary to previous assumptions, they are shown to possess a substantial pharmacopoeia, including at least 113 species of plants and fungi. The changes in their use and knowledge of plant medicine are discussed in the context of the past and present influences on the Yanomami by the outside world. (Résumé d'auteur

Greenhouse gas emissions from soils under organic management

This report was presented at the UK Organic Research 2002 Conference. Land emissions of N2O, CO2 and NH3 have been subject to little study under organic systems, yet form important aspects of sustainability of such systems. We describe innovative methods developed at SAC to assess trace gas emission using both automatic closed chamber systems (intensive, short term monitoring) and manually-operated closed chamber systems (occasional, long term monitoring). Long-term data were collected from organic ley-arable rotation trials in North-east of Scotland. Short term data were collected to show the effect of timing and depth of ploughing-out of the ley phase on gas emissions. Ploughing gave a shortterm stimulation of CO2 and, more markedly, of N2O emission. Emissions of N2O from organic grass-clover leys were considerably lower than from conventional grass. However, some N2O emissions from organic arable are higher than from conventional systems, particularly in the first year after ploughing out ley. Ammonia emissions after spreading manure on grass were significant in the summer, though only short-lived

Indian lands, environmental policy and military geopolitics in the development of the brazilian Amazon : the case of the Yanomami

This article examines the realignments of the developmentalist discourse and strategy of the Brazilian military for the Amazon during the civilian government of the "New Republic" (1985-90). It focuses on a case study, i.e. the official expropriation of the lands of the Yanomami Indians in the states of Roraima and Amazonas along the Brazil/Venezuela border. The analysis brings to light how, during this period, the military aimed at neutralizing both the pressure of environmental NGOs on Brazil's international creditors and the emergent democratization of decisions on land use in Amazônia. It shows how such attempts involved manipulating environmental legislation and ecological rhetoric in order to perpetuate militazy hegemony over the development of Amazônia to the manoeuvres to a geopolitical and economical model for Amazonian integration still inspired by the national security doctrine drawn up in the 1950s and 1960s by the Escola Superior de Guerra. (Résumé d'auteur

Yanomami "violence" : inclusive fitness or ethnographer's representation ?

Critique de l'interprétation sociobiologique de la guerre yanomami proposée par l'anthropologue américain N.A. Chagnon dans un article de Science (239 : p. 985-92, 1988). (Résumé d'auteur