Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
We extend the theory of distributional kernel operators to a framework of generalized functions, in which they are replaced by integral kernel operators. Moreover, in contrast to the distributional case, we show that these generalized integral operators can be composed unrestrictedly. This leads to the definition of the exponential, and more generally entire functions, of a subclass of such operators.
ISSN: 1065-2469

hal-01530753
https://hal.univ-antilles.fr/hal-01530753

Éditeur(s) : HAL CCSD Taylor & Francis (Routledge)
Résumé : International audience
Introduction: The aims of this literature review were to characterize the communications presented during six Association for Research on Intervention in Sport (ARIS) French-speaking congresses from 2000 to 2010 and to compare the research trends between French and English research traditions. The definition of pedagogy is close to the notion of intervention and attempts to study, in an interacting or isolated way, three key components – the educator (professor, coach, teacher's educator), the participants (students, children, adults) and the curriculum/knowledge in specific contexts. The theoretical framework is centred on the social construction of the scientific knowledge. Method: All the communications of the six ARIS congresses (n ¼ 836), reflecting the multiple facets of educational research were analysed. The quantitative treatment of the data, with the assistance of Sphinx software, consisted of univariate (frequencies, percentages) and bi-variate (chi-square statistic) analyses to identify possible significant relations between variables such as the congress, country and sex of author(s), institution, and so on. Findings: The results highlight the commonalties and differences between French and English research about intervention/pedagogy. We notice the continuing expansion of the field of intervention/pedagogy in the Francophone and the Anglophone worlds. But the low participation of the practitioners shows how intricate it is to move educational research closer to everyday practice. The results show that the contexts studied within ARIS are mainly school physical education and teacher's education, then coaching and other contexts. The majority of studies are centred on one component of pedagogy, but rarely on the interactions between the educators and the participants. The Francophone research is essentially descriptive and heuristic, using mostly qualitative methods (interviews and observations). This orientation of Francophone studies towards heuristic research seems to contrast with Anglophone research, even though qualitative research has recently come to dominate. Conclusion: The ARIS researchers have a common object of study (intervention/ pedagogy), share the same ideas and aims, learn how to do it better as they interact regularly and develop a shared repertoire of knowledge, theories and methods. We see here signs of an undeniable wealth of knowledge and the combination of different theories and methods leading to a better understanding of educational phenomena.
ISSN: 1740-8989

hal-01620916
https://hal.univ-antilles.fr/hal-01620916
https://hal.univ-antilles.fr/hal-01620916/document
https://hal.univ-antilles.fr/hal-01620916/file/PESP%20MUSARD%26POGGI%20VA.pdf
DOI : 10.1080/17408989.2013.817008

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
We introduce the notions of conditioning and well-posedness for equilibrium problems. Using these concepts, we obtain finite and strong convergence results for the proximal method that improve, develop, and unify several theorems in optimization and nonlinear analysis.
ISSN: 0163-0563

hal-00779994
https://hal.univ-antilles.fr/hal-00779994
DOI : 10.1080/01630560701766684

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
To analyze the characteristics and outcome of infective endocarditis (IE) according to the time interval between IE first symptoms and diagnosis.
Among the IE cases of a French population-based epidemiological survey, patients having early-diagnosed IE (diagnosis of IE within 1 month of first symptoms) were compared with those having late-diagnosed IE (diagnosis of IE more than 1 month after first symptoms).
Among the 486 definite-IE, 124 (25%) had late-diagnosed IE whereas others had early-diagnosed IE. Early-diagnosed IE were independently associated with female gender (OR = 1.8; 95% CI [1.0-3.0]), prosthetic valve (OR= 2.6; 95% CI [1.4-5.0]) and staphylococci as causative pathogen (OR = 3.7; 95% CI [2.2-6.2]). Cardiac surgery theoretical indication rates were not different between early and late-diagnosed IE (56.3% vs 58.9%), whereas valve surgery performance was lower in early-diagnosed IE (41% vs 53%; p = .03). In-hospital mortality rates were higher in early-diagnosed IE than in late-diagnosed IE (25.1% vs 16.1%; p < .001).
The time interval between IE first symptoms and diagnosis is closely related to the IE clinical presentation, patient characteristics and causative microorganism. Better prognosis reported in late-diagnosed IE may be related to a higher rate of valvular surgery. KEY MESSAGES Infective endocarditis, which time interval between first symptoms and diagnosis was less than one month, were mainly due to Staphylococcus aureus in France. Staphylococcus aureus infective endocarditis were associated with septic shock, transient ischemic attack or stroke and higher mortality rates than infective endocarditis due to other bacteria or infective endocarditis, which time interval between first symptoms and diagnosis was more than one month. Infective endocarditis, which time interval between first symptoms and diagnosis was more than one month, were accounting for one quarter of all infective endocarditis in our study and were associated with vertebral osteomyelitis and a higher rate of cardiac surgery performed for hemodynamic indication than other infective endocarditis.
ISSN: 0785-3890

hal-01509563
https://hal.archives-ouvertes.fr/hal-01509563
PUBMED : 27607562

Éditeur(s) : HAL CCSD Taylor & Francis (Routledge)
Résumé : International audience
This article presents the institutional implications and ideologies in the organisation of a Sports Movement for the disabled, whether a physical or sensory handicap, and focusing particular attention on its development in France, linked with international structures. The emergence and development in France of sports organisations for the disabled is based on a different model from that introduced in England by Guttmann through the Stoke Mandeville Games. From the 1960s, both trends, one supported by physicians and the other by individuals concerned with disabilities, structured the International Movement as a contest of negotiations and competition. The objective of rehabilitating paraplegics put in place at Stoke Mandeville gradually gave way to a sport rational and the integration of all types of disability within the Movement. The desire to unite in a single organisation was the driving force of the Movement in its search for dual recognition, on the one hand, as the representative of all physical and sensory deficiencies and, on the other, by the able-bodied sports councils and, in particular, the International Olympic Committee. However, this raised a number of issues inherent to any deficiency when taking into account its specific peculiarities.
ISSN: 0952-3367

hal-01681857
https://hal.archives-ouvertes.fr/hal-01681857
DOI : 10.1080/09523367.2014.931842

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
Recently Auslender & Crouzeix introduced a well-behaved asymptotical notion for convex functions. The aim of this work is to extend this notion to the saddle case
ISSN: 0163-0563

hal-00773195
https://hal.univ-antilles.fr/hal-00773195
DOI : 10.1080/01630569708816806

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
ISSN: 1065-2469

hal-01529516
https://hal.univ-antilles.fr/hal-01529516

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
Humans may be exposed via their environment to multiple chemicals as a consequence of human activities and use of synthetic products. Little knowledge is routinely generated on the hazards of these chemical mixtures. The metabolomic approach is widely used to identify metabolic pathways modified by diseases, drugs, or exposures to toxicants. This review, based on the state of the art of the current applications of metabolomics in environmental health, attempts to determine whether metabolomics might constitute an original approach to the study of associations between multiple, low-dose environmental exposures in humans. Studying the biochemical consequences of complex environmental exposures is a challenge demanding the development of careful experimental and epidemiological designs, in order to take into account possible confounders associated with the high level of interindividual variability induced by different lifestyles. The choices of populations studied, sampling and storage procedures, statistical tools used, and system biology need to be considered. Suggestions for improved experimental and epidemiological designs are described. Evidence indicates that metabolomics may be a powerful tool in environmental health in the identification of both complex exposure biomarkers directly in human populations and modified metabolic pathways, in an attempt to improve understanding the underlying environmental causes of diseases. Nevertheless, the validity of biomarkers and relevancy of animal-to-human extrapolation remain key challenges that need to be properly explored.
ISSN: 1093-7404

hal-00976116
https://hal-univ-rennes1.archives-ouvertes.fr/hal-00976116
https://hal-univ-rennes1.archives-ouvertes.fr/hal-00976116/document
https://hal-univ-rennes1.archives-ouvertes.fr/hal-00976116/file/Potential_input_from_metabolomics_accepted.pdf
DOI : 10.1080/10937404.2013.860318

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
Overfishing and habitat destruction due to local and global threats are undermining fisheries, biodiversity, and the long-term sustainability of tropical marine ecosystems worldwide, including in the Coral Triangle. Well-designed and effectively managed marine reserve networks can reduce local threats, and contribute to achieving multiple objectives regarding fisheries management, biodiversity conservation and adaptation to changes in climate and ocean chemistry. Previous studies provided advice regarding ecological guidelines for designing marine reserves to achieve one or two of these objectives. While there are many similarities in these guidelines, there are key differences that provide conflicting advice. Thus, there is a need to provide integrated guidelines for practitioners who wish to design marine reserves to achieve all three objectives simultaneously. Scientific advances regarding fish connectivity and recovery rates, and climate and ocean change vulnerability, also necessitate refining advice for marine reserve design. Here we review ecological considerations for marine reserve design, and provide guidelines to achieve all three objectives simultaneously regarding: habitat representation; risk spreading; protecting critical, special and unique areas; reserve size, spacing, location, and duration; protecting climate resilient areas; and minimizing and avoiding threats. In addition to applying ecological guidelines, reserves must be designed to address social and governance considerations, and be integrated within broader fisheries and coastal management regimes.
ISSN: 0892-0753

hal-01333534
https://hal-univ-perp.archives-ouvertes.fr/hal-01333534
DOI : 10.1080/08920753.2014.877763

Éditeur(s) : HAL CCSD Taylor & Francis (Routledge)
Résumé : International audience
The purpose of this study was to determine the effect of triathlon training using multiple, short cycle-run sequences (multicycle-run training) on cycle-run performance. Twelve competitive triathletes, randomized into two groups, underwent multicycle-run training or normal training for 6 weeks. During this period, baseline training remained the same for both groups, and only the high-intensity component differed. The differentiated exercises were performed at or above 100% maximal aerobic velocity. The improvements in overall cycle-run performance were similar (3.3 +/- 1.4 % and 6.1 +/- 1.7% rise in Performance in multicycle-run and normal training, respectively). However, the improvement in performance was significantly greater for the multicycle-run training (-11.2 +/- 6.8 s versus -1.2 +/- 7. 7 s for multicycle-run training and normal training, respectively) during both the cycle-run change and the first 333-m lap, which together are termed the cycle-run transition. We concluded that 6 weeks of multicycle-run training did not induce greater improvement in cycle-run performance than did normal training in competitive triathletes. However, it did induce significant improvement in the cycle-run transition. This finding indicates that multicycle-run training may help competitive triathletes to develop greater skill and better physiological adaptations during this critical transition period of the triathlon race.
ISSN: 0270-1367

hal-00720124
https://hal.univ-antilles.fr/hal-00720124

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
Portable microbial samplers are useful for detecting microorganisms in the air. However, limited data are available on their performance when sampling airborne biological agents in a routine practice. We compared bacterial and fungal concentrations obtained in field conditions using three impactor samplers with different designs (AES Chemunex Sampl'Air, bioMérieux Air Ideal, and Sartorius AirPort MD8/BACTair). The linearity of mold collection was tested in the range of 100 L to 1000 L, and all the devices had a correlation coefficient higher than 0.95. For optimal comparison of the samplers, we performed experiments in different hospital rooms with varying levels of air biocontamination. Each sampling procedure was repeated to assess reproducibility. No significant difference between the samplers was observed for the mold concentrations on Sabouraud agar, whereas Sampl'Air collected significantly more bacteria on tryptic soy agar than Air Ideal or BACTair at one of the sites. Impactor location in the room was nevertheless associated with the variability observed with the three samplers at the highest microbial concentration levels. On the basis of their performance, autonomy and simplicity of use, these three impactors are suitable for routine indoor evaluation of microbial air contamination.
ISSN: 1545-9624

hal-00874614
https://hal.archives-ouvertes.fr/hal-00874614
DOI : 10.1080/15459624.2013.800955
PUBMED : 23799861

Éditeur(s) : HAL CCSD Taylor & Francis: SSH Journals
Résumé : International audience
We analysed stroke phases and arm and leg coordination during front crawl swimming with and without a wet suit. Twelve nationally and internationally ranked French male triathletes performed three swim trials in randomized order using the front crawl stroke with and without a wet suit. All triathletes swam at three different swim velocities, corresponding to the paces appropriate for the 800 m (V800), 100 m (V100) and 50 m (V50) events. The different stroke phases and arm and leg coordination were identified by video analysis. Arm coordination was quantified using a new index of coordination, which expresses the three major modalities of opposition, catch-up and superposition in swimming. At all swim velocities, no significant differences in leg movements with or without the wet suit were noted. However, the wearing of the wet suit was associated with a significantly greater stroke length at the paces appropriate for the 100 and 50 m events (+3.46% and +3.10% at V100 and V50, respectively; P<0.01); a significantly greater stroke index at all three velocities (+5.18%, +5.21% and +5.91% at V800, V100 and V50, respectively; P<0.01); a significantly shorter pulling phase (-10.97%; P<0.05) and lower index of coordination (-21.87%; P<0.01) at the pace appropriate for the 800 m; and a significantly greater entry and catch phase (+9.81%; P<0.05) at the pace appropriate for the 100 m. We conclude that the wet suit amplified the coordination mode of the triathletes (i.e. catch-up coordination) without modifying stroke rate, recovery phase or leg movements.
ISSN: 0264-0414

hal-00720724
https://hal.univ-antilles.fr/hal-00720724

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
This article is concerned with a generalization of the hybrid steepest descent method from variational inequalities to the multivalued case. This will be reached by replacing the multivalued operator by its Yosida approximate, which is always Lipschitz continuous. It is worth mentioning that the hybrid steepest descent method is an algorithmic solution to variational inequality problems over the fixed point set of certain nonexpansive mappings and has remarkable applicability to the constrained nonlinear inverse problems like image recovery and MIMO communication systems
ISSN: 0163-0563

hal-00776641
https://hal.univ-antilles.fr/hal-00776641
DOI : 10.1080/01630563.2011.619676

Éditeur(s) : HAL CCSD Taylor & Francis: STM, Behavioural Science and Public Health Titles
Résumé : International audience
Measurements of daily means of surface solar irradiance made at four ground stations in French Guiana are compared to estimates from the HelioClim-3 database produced by the Heliosat-2 method applied to Meteosat satellite images. The bias ranges from 12 W m−2 (6% of the mean of measurements) to 23 W m−2 (12%), depending on the stations. The root mean square difference ranges between 23 W m−2 (11%) and 35 W m−2 (18%). The correlation coefficient (r) is close to 0.9. Better results are observed during the rainy season than during the dry season. Uncertainties are mainly due to the presence of clouds, large viewing angles of the Meteosat satellite, and limitations of the atmospheric transmittance model under the tropical atmospheric conditions. It is concluded that the Heliosat-2 method provides new knowledge about solar radiation in French Guiana.
International Journal of Remote Sensing

hal-00779675
https://hal-mines-paristech.archives-ouvertes.fr/hal-00779675
https://hal-mines-paristech.archives-ouvertes.fr/hal-00779675/document
DOI : 10.1080/01431161.2012.756598

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
The astronomical and geodetic observatory OCA, located on the karst plateau of Calern (Caussols, France), has been monitoring earth deformation for several years. Two long baseline tiltmeters have been installed in a shaft in 2007, along with classical hydrogeological monitoring tools in order to investigate the relationship between current karst deformation and hydrology. Dye tests have shown that the plateau is drained towards the East, to the spring of Bramafam, except for its Western third. Karst tilting, as recorded by the tiltmeters, is linked to rainfall events. These instruments bring additional information to characterize different reservoirs: the deep karst aquifer of Bramafan with high amplitude oscillations of its water table, up to 100 m, the perched aquifer of Moustiques shaft whose response is attenuated, and several slope aquifers with reduced oscillations (Fontaniers, Castel Bon Pré). Tilt deformation reaches 8 μrad with a definite orientation between N90°E and N100°E. The best correlation between hydrology and tilts is observed for the deep aquifers. If the first autumn rainfall is ineffective on tilt, it recharges the epikarst and refills the reserves. The winter rains cause the water to flush towards the eastern deep aquifer and provokes a quick tilting of the plateau. Finally, the long term variations in tilt and water table show a very good correlation The relationship between current hydrological deformations and tectonics is also analyzed; broken and shifted speleothems in the shafts indicate a general shift of the plateau towards the south.
ISSN: 0985-3111

hal-00708116
https://hal.archives-ouvertes.fr/hal-00708116
https://hal.archives-ouvertes.fr/hal-00708116/document
https://hal.archives-ouvertes.fr/hal-00708116/file/2010_Geodinamica_Calern_final.pdf
BIBCODE : 10.3166/ga.23.49-64

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
With the help of differential algebras of(C,Ep)-type, we construct an algebra of generalized functions which allows us to solve a Gourmet problem with irregular data. For this problem, we perform a qualitative study when the data are Dirac functions.
ISSN: 1065-2469

hal-01545673
https://hal.archives-ouvertes.fr/hal-01545673

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
We study the convergence of a variable version of the Krasnoselski-Mann algorithm applied to a primal dual fixed point problem. The link with Spingarn's partial inverse method is made, and an application to feasibility problems and mathematical programming is also proposed.
ISSN: 0163-0563

hal-00779984
https://hal.univ-antilles.fr/hal-00779984
DOI : 10.1080/01630560902987436

Éditeur(s) : HAL CCSD Taylor & Francis (Routledge)
Résumé : International audience
‘Biological identity’ is the result of interactions between the environment and the genome. These interactions, however, were not taught before 2001. In the French syllabus for 16-year-old students, two of the five sections on genetics deal with biological identity. We analysed the texts and images of the chapters relating to these two sections in the three most commonly used textbooks. The results showed that, using strategies specific to each textbook, all focused predominantly on the genetic determination of the phenotype, and on the idea of the ‘genetic code’. We then analysed the conceptions of 35 trainee Biology teachers, using their answers to a questionnaire. For most of them, psychological identity does not illustrate the notion of biological identity: the Cartesian dualism of body/ soul is very influential. The analysis of the trainee teachers' conceptions showed their poor understanding of genome/ environment interactions and of the process of epigenesis. Fortunately, since 2001, in France genome/ environment interactions have been introduced into the new Biology syllabus.
ISSN: 0021-9266

hal-01537729
https://hal.univ-antilles.fr/hal-01537729
DOI : 10.1080/00219266.2003.9655857

Éditeur(s) : HAL CCSD Taylor & Francis (Routledge)
Résumé : International audience
ISSN: 1751-1321

hal-01681300
https://hal.archives-ouvertes.fr/hal-01681300
DOI : 10.1080/17511321.2017.1341948