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The aim of this study is to describe the speech act of girls facing handball play situations and then see how to construct efficient action rules. The used method is choosing a descriptive, exploratory and heuristic analysis of the discursive practices of a group of girls (8 hours of effective lessons, 14 girls aged 14, T = 12 hours of actual practice). The study includes analyze of girl's speech during the debate of idea's situation. On the other hand, we aim the extraction of effective action rules. The quantitative study showed that speech productions increase notably more than the evolution of action rules formulation during the cycle. The qualitative analysis showed that the decisions made by the girls guide to re-question the relationship to knowledge in the educative cycles using collective sport games. Added to that, integrating moments where students can debate and share opinions about the game is didactically interesting in order to broaden and refine their repertoire of solutions to win.

The aim of this study was to assess the sensitivity, internal consistency and the factorial structure of an Arabic version of OMSAT-3 among Tunisian athletes. A translated version of OMSAT-3 was administrated to a total of 526 Tunisian athletes from both sexes divided on elite (n = 240) and non-elite (n = 286) and aged between 16 and 19 years. The results showed robust psychometric properties for the Arabic version of the instrument: it was sensitive according to the level of practice (8/12 subscales could discriminate the elites and non-elites athletes). Cronbach's alpha revealed a good internal consistency (α > 0.70 for all the subscales). Also, confirmatory factor analysis provides a good adjustment index and adequate factorial structure. This version in Arabic language presents acceptable psychometric proprieties to evaluate the mental skills of the athletes in Tunisia and in other Arabic countries.

In the course of developing ultrasensitive and quantitative electrochemical point-of-care analytical tools for genetic detection of infectious diseases, osmium(ii) metallointercalators were revealed to be suitable and efficient redox probes to monitor the in vitro DNA amplification [Defever etal, Anal. Chem., 2011, 83, 1815-1821]. In this work, we thus propose a complete computational protocol in order to evaluate the affinity between Os(ii) complexes with double-stranded DNA. This protocol is based on molecular dynamics, with the parametrization of the GAFF force field for the Os(ii) complexes presenting an octahedral environment with polypyridine ligands, and QM/QM' calculations to evaluate the binding energy. For three Os(ii) probes and different binding sites, molecular dynamics simulations and interaction energies calculated at the QM/QM' level are successively discussed and compared to experimental data in order to identify the most stable binding sites. The computational protocol we propose should then be used to design more efficient Os(ii) metallointercalators.