Search results for "Competitive interaction"
showing 5 items of 5 documents
A Grounded Theory of Elite Male Table Tennis Players’ Activity during Matches
2006
International audience; This article describes the main features of a collaborative project involving researchers, coaches, and elite table tennis players. The project was carried out between 1997 and 2002 with funding from the French Ministry of Youth and Sports, in response to a request by French Table Tennis Team coaches to improve the training of table tennis players. Matches were videotaped during international meets and followed by interviews during which the players described and commented on their activity as they viewed the tapes. A grounded theory of players' activity emerged from the data collected and the ensuing theoretical issues that were raised. The findings on table tennis …
Competitive interaction between chronic obstructive pulmonary disease and CHA2DS2-VASc score in predicting incident atrial fibrillation
2018
Background: Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity and mortality, and an emerging risk factor for atrial fibrillation (AF). CHADS2 and CHA2DS2-VASc scores are significantly associated with incident AF independently of other risk factors. The aim of this study was to demonstrate a possible interaction between COPD and CHA2DS2-VASc in predicting incident AF. Methods: This observational prospective cohort study included 4322 Caucasians with cardiovascular risk factors, stratified by CHA2DS2-VASc score (> 2 vs < 2) and presence/absence of COPD. To detect AF appearance, patients underwent, every 6 months, physical examination, standard 12‑lead electrocardiog…
CO Oxidation on Cationic Gold Clusters: A Theoretical Study
2008
Aiming at understanding the elementary steps governing the oxidation of CO catalyzed by dispersed or supported gold nanoclusters, the reactivity of molecular species, such as O2 and CO, on neutral and positively charged Au13 clusters have been studied using a DFT approach. Two CO oxidation mechanisms have been simulated, involving respectively the adsorption of CO and O2 on adjacent catalytic sites (two-sites mechanism) and the competitive interaction of the reactants on the same site (single-site mechanism). It is demonstrated that in the former scheme a definite interaction of CO and O2 with both the charged and neutral cluster is effective, but that a chemical reaction between the adsorb…
Analysis of contextual information sharing during table tennis matches: An empirical study on coordination in sports
2009
Abstract This study examined contextual information sharing between table tennis players during competitive interaction (two opponents during singles) and cooperative interaction (two partners during doubles) in a study based on the notion of shared context (Salembier & Zouinar, 2000) and conducted within the semiological framework of the course‐of‐action (Theureau, 2003). Matches were videotaped and players’ verbalizations as they viewed the tapes were collected a posteriori. The analysis and comparison of their courses of action served to characterize the nature and content of the contextual information that was shared between the players during singles and doubles matches. The results re…
Intraguild interactions between two egg parasitoids of a true bug in semi-field and field conditions.
2014
International audience; Research on interspecific competitive interactions among insect parasitoids has often been characterized by laboratory studies in which host insects are exposed to female parasitoids of different species in various sequences and combinations. In the last years, an increasing number of studies have investigated interspecific interactions under field and semi-field conditions although just a few number of works focused on egg parasitoids. In this work, we undertook a two-year study to investigate interspecific interactions between Trissolcus basalis (Wollaston) (Hymenoptera: Platygastridae) and Ooencyrtus telenomicida (Vassiliev) (Hymenoptera: Encyrtidae), two egg para…