Using an enactive approach to trail runners’ activity, this study sought to identify and characterize runners’ phenomenological gestalts, which are forms of experience that synthesize the heterogeneous sensorimotor, cognitive and emotional information that emerges in race situations. By an in-depth examination of their meaningful experiences, we were able to highlight the different typologies of interactions between bodily processes (e.g., sensations, pains), behaviors (e.g., actions, strategies) and environment (e.g., meteorological conditions, route profile). Ten non-professional runners who ran an ultra-trail running race (...) (330 kilometers, 24,000 meters of elevation gain) volunteered to participate in the study. Data were collected in two steps: (1) collection of past activity traces (i.e., race maps, field notes and self-assessment scales) and (2) enactive interviews using the past activity traces in which the runners were invited to relive their experience and describe their activity. The enactive interviews were coded using the course-of-experience methodology to identify the phenomenological gestalts that emerged from activity and scaffolded the runners’ courses of experience. The results revealed that runners typically enact three phenomenological gestalts: controlling global ease, enduring general fatigue and experiencing difficult situations, and feeling freedom in the running pace. These phenomenological gestalts were made up of specific behaviors, involvements and meaningful situated elements that portrayed various ways of achieving an ultra-endurance performance in the race situation. They also highlighted how runners enact a meaningful world by acting in relation to the fluctuations in physical sensations and environmental conditions during an ultra-trail race. Practical applications for preparation, race management and sports psychology interventions are proposed to enrich the existing recommendations. In conclusion, this approach provides new research perspectives by offering a more holistic grasp of activity in trail running through an in-depth analysis of athletes’ experience. In doing so, we may expect that runners can connect these typical gestalts to their own personal experiences and stories as trail runners in order to sustain a viable approach to their sport. (shrink)

Evolution has shaped all living organisms on Earth, although many details of this process are shrouded in time. However, it is possible to see, with one's own eyes, evolution as it happens by performing experiments in defined laboratory conditions with microbes that have suitably fast generations. The longest‐running microbial evolution experiment was started in 1988, at which time twelve populations were founded by the same strain ofEscherichia coli. Since then, the populations have been serially propagated and have evolved for tens (...) of thousands of generations in the same environment. The populations show numerous parallel phenotypic changes, and such parallelism is a hallmark of adaptive evolution. Many genetic targets of natural selection have been identified, revealing a high level of genetic parallelism as well. Beneficial mutations affect all levels of gene regulation in the cells including individual genes and operons all the way to global regulatory networks. Of particular interest, two highly interconnected networks—governing DNA superhelicity and the stringent response—have been demonstrated to be deeply involved in the phenotypic and genetic adaptation of these experimental populations. BioEssays 29:846–860, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

J. K. Rowling's dragons follow in the lineage of legendary creatures as they have been remembered in the medieval novels: they are large reptiles with wings that breathe fire. In addition, they often keep a treasure. These dragons are often aggressive with humans. However, even though they are aggressive, they are not evil in Harry Potter. Besides, Voldemort and his Death Eaters are only indirectly associated with a dragon. They are aggressive because they are wild animals. Man should not try (...) to tame them. We must understand them and protect them by adopting an ecological approach to the preservation of dragons. (shrink)

Quasi-classical logic is a propositional logic for reasoning under inconsistency pointed out recently in the literature [3] [21]. Compared with several other paraconsistent logics, it has the nice feature that no special attention needs to be paid to a special form of premises. However, only few is known about its computational behaviour up to now. In this paper, we fill this gap by pointing out a linear time translation that maps every instance of the quasi-classical entailment problem for CNF formulas (...) into an instance of the classical entailment problem. This enables us to show that quasi-classical entailment for CNF formulas is “only” coNP -complete, take advantage of all existing automated reasoning techniques for classical entailment in order to improve quasi-classical inference from the practical side. Especially, tractable classes of formulas for quasi-classical entailment are pointed out. (shrink)

Le Relais de Sceaux (clinique Dupré, Fondation santé des étudiants de France), qui reçoit des adolescents et jeunes adultes et leurs familles, est une porte d’entrée aux soins médico-psychologiques. À partir de 2013, l’ouverture de l’accueil aux 11-15 ans a bouleversé le fonctionnement de départ du Relais. À côté du dispositif d’accueil sans rendez-vous des 16-25 ans, un protocole spécifique adapté aux collégiens a été mis en place. Il s’appuie sur un contact téléphonique avec les parents préparant la première rencontre. (...) Via une situation clinique, les auteurs, psychologues et psychiatres exerçant au Relais de Sceaux, exposent les spécificités cliniques de collégiens pour lesquels la rencontre familiale est un préalable indispensable à l’instauration d’un soin psychique individualisé. (shrink)