On religion and the press in Kerala, India.

Les fondements théoriques d'une analyse des activités dans les discours professionnels illustrée par des données issues de rencontres en conseil génétique sont présentés ici. En prenant l'activité comme unité de base de l'action, je me réfère rapidement à «l'activité théorique» proposée par Leontyev, rajoutant les notions de «jeux de langage» de Wittgenstein et de «types d'activités» de Levinson. L'activité d'analyse dans les discours professionnels doit aller au-delà du seul codage des instances de l'usage du langage et doit s'orienter vers la (...) compréhension d'une écologie spécifique de l'activité, incluant les dimensions relationnelles et de rôles des participants présents ou absents. Cette interprétation peut s'analyser en considérant le cadre thématique et interactionnel d'une situation donnée grâce à la prise en compte des propriétés structurelles et relationnelles dans l'usage du langage.In this paper I present a theoretical basis for activity analysis in professional discourse settings followed by an illustration of data from the genetic counseling encounters. By taking activity as the basic unit of action, I briefly draw on "activity theory" as proposed by Leontyev, supplemented by Wittgenstein's notion of "language games" and Levinson's notion of "activity types". I argue that activity analysis in the professional discourse settings has to go beyond mere coding of instances of language use towards an interpretive understanding of the activity-specific ecology, including the role-relational dimensions of co-present and absent participants. Such an interpretive task can be achieved through thematic and interactional mapping of a given encounter by taking into consideration the structural and relational properties situated language use. (shrink)

The prevention, treatment and management of disease are closely linked to how the causes of a particular disease are explained. For multi-factorial conditions, the causal explanations are inevitably complex and competing models may exist to explain the same condition. Selecting one particular causal explanation over another will carry practical and ethical consequences that are acutely relevant for health policy. In this paper our focus is two-fold; the different models of causal explanation that are put forward within current scientific literature for (...) the high and rising prevalence of the common complex conditions of coronary artery disease and type 2 diabetes mellitus ; and how these explanations are taken up within national health policy guidelines. We examine the causal explanations for these two conditions through a systematic database search of current scientific literature. By identifying different causal explanations we propose a three-tier taxonomy of the most prominent models of explanations: evolutionary, lifecourse, and lifestyle and environment. We elaborate this taxonomy with a micro-level thematic analysis to illustrate how some explanations are semantically and rhetorically foregrounded over others. We then investigate the uptake of the scientific causal explanations in health policy documents with regard to the prevention and management recommendations of current National Service Frameworks for CAD and T2D. Our findings indicate a lack of congruence between the complexity and frequent overlap of causal explanations evident in the scientific literature and the predominant focus on lifestyle recommendations found in the mainstream health policy documents. (shrink)

Type II DNA topoisomerase activity is required to change DNA topology. It is important in the relaxation of DNA supercoils generated by cellular processes, such as transcription and replication, and it is essential for the condensation of chromosomes and their segregation during mitosis. In mammals this activity is derived from at least two isoforms, termed DNA topoisomerase IIα and β. The α isoform is involved in chromosome condensation and segregation, whereas the role of the β isoform is not yet clear. (...) DNA topoisomerase IIβ was first reported in 1987. Here we review the research on DNA topoisomerase IIβ over the last 10 years. BioEssays 20:215–226, 1998.© 1998 John Wiley & Sons, Inc. (shrink)