Étude prospective de la procrastination académique : le rôle des illusions positives, de la perception illusoire du temps et de la motivation

La procrastination académique est la tendance à remettre à plus tard l'accomplissement d'une tâche scolaire, au point de vivre de l'inconfort (Solomon & Rothblum, 1984). La présente recherche avait pour objectif de vérifier l'influence des illusions positives (Taylor & Brown, 1994), de la perception illusoire du temps (Buehler, Griffin, & Ross, 1994) et de la motivation (Deci & Ryan, 1991) sur la procrastination académique. Pour ce faire, un modèle médiationnel a été développé et testé auprès de 219 universitaires du premier cycle. Les résultats des analyses de régression soutiennent le modèle proposé. Ils démontrent que les illusions positives rehaussent la motivation académique à la mi-session, tandis que la perception illusoire du temps l'influence négativement. En retour, plus l'étudiant est motivé de manière autodéterminée à la mi-session moins il a tendance à faire de la procrastination à la fin du trimestre

Rehabilitation program for traumatic chronic cervical pain associated with unsteadiness: a single case study

<p>Abstract</p> <p>Background</p> <p>Neck problems are often recurring or chronic. After pain, unsteadiness and balance problems are among the most frequent symptoms reported by chronic neck pain (CNP) patients. Altered sensorimotor control of the cervical spine and sensorimotor integration problems affecting postural control have been observed in CNP patients. Very few data are available regarding the post-intervention effects of rehabilitation programs on postural control in CNP.</p> <p>Case presentation</p> <p>This is a case study of a traumatic CNP patient (a 45-year old female) with postural unsteadiness who participated in an 8-week rehabilitation program combining therapeutic exercises with spinal manipulative therapy. Pre-intervention data revealed that the postural control system was challenged when postural control sensory inputs were altered, particularly during the head-extended-backward condition. Post-intervention centre of pressure measurements indicated a drastic reduction in postural sway during trials with changes in neck orientation.</p> <p>Conclusion</p> <p>This case report indicates that an 8-week rehabilitation program combining therapeutic exercises with spinal manipulative therapy may have had an effect on improvement of postural control in a trauma CNP patient with unsteadiness. These results warrant further studies to investigate the relationships between pain amelioration, sensorimotor control of the cervical spine, muscle fitness and postural steadiness.</p

Chemical composition and insecticidal activity of plant essential oils from Benin against Anopheles gambiae (Giles)

BACKGROUND: Insecticide resistance in sub-Saharan Africa and especially in Benin is a major public health issue hindering the control of the malaria vectors. Each Anopheles species has developed a resistance to one or several classes of the insecticides currently in use in the field. Therefore, it is urgent to find alternative compounds to conquer the vector. In this study, the efficacies of essential oils of nine plant species, which are traditionally used to avoid mosquito bites in Benin, were investigated. METHODS: Essential oils of nine plant species were extracted by hydrodistillation, and their chemical compositions were identified by GC-MS. These oils were tested on susceptible “kisumu” and resistant “ladji-Cotonou” strains of Anopheles gambiae, following WHO test procedures for insecticide resistance monitoring in malaria vector mosquitoes. RESULTS: Different chemical compositions were obtained from the essential oils of the plant species. The major constituents identified were as follows: neral and geranial for Cymbopogon citratus, Z-carveol, E-p-mentha-1(7),8-dien-2-ol and E-p-mentha-2,8-dienol for Cymbopogon giganteus, piperitone for Cymbopogon schoenanthus, citronellal and citronellol for Eucalyptus citriodora, p-cymene, caryophyllene oxide and spathulenol for Eucalyptus tereticornis, 3-tetradecanone for Cochlospermum tinctorium and Cochlospermum planchonii, methyl salicylate for Securidaca longepedunculata and ascaridole for Chenopodium ambrosioides. The diagnostic dose was 0.77% for C. citratus, 2.80% for E. tereticornis, 3.37% for E. citriodora, 4.26% for C. ambrosioides, 5.48% for C. schoenanthus and 7.36% for C. giganteus. The highest diagnostic doses were obtained with S. longepedunculata (9.84%), C. tinctorium (11.56%) and C. planchonii (15.22%), compared to permethrin 0.75%. A. gambiae cotonou, which is resistant to pyrethroids, showed significant tolerance to essential oils from C. tinctorium and S. longepedunculata as expected but was highly susceptible to all the other essential oils at the diagnostic dose. CONCLUSIONS: C. citratus, E. tereticornis, E. citriodora, C. ambrosioides and C. schoenanthus are potential promising plant sources for alternative compounds to pyrethroids, for the control of the Anopheles malaria vector in Benin. The efficacy of their essential oils is possibly based on their chemical compositions in which major and/or minor compounds have reported insecticidal activities on various pests and disease vectors such as Anopheles

Stochastic Formal Correctness of Numerical Algorithms

We provide a framework to bound the probability that accumulated errors were never above a given threshold on numerical algorithms. Such algorithms are used for example in aircraft and nuclear power plants. This report contains simple formulas based on Levy's and Markov's inequalities and it presents a formal theory of random variables with a special focus on producing concrete results. We selected four very common applications that fit in our framework and cover the common practices of systems that evolve for a long time. We compute the number of bits that remain continuously significant in the first two applications with a probability of failure around one out of a billion, where worst case analysis considers that no significant bit remains. We are using PVS as such formal tools force explicit statement of all hypotheses and prevent incorrect uses of theorems

Services and Interventions for People who are Homeless with Companion Animals (Pets)

Background: Many people who are homeless own a companion animal (a ‘pet’). Pet ownership has positive impacts on health and wellbeing. However, for people who are homeless, pet ownership also creates multiple challenges and may be a barrier to exiting homelessness. This systematic review will identify the types, and outcomes, of services and interventions to support people who are homeless with pets.&nbsp; Methods/Design: This review will be conducted according to the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines. Searches will be undertaken on five databases. Combinations of search terms and subject headings or index terms will be used. Citation chaining and citation tracking will also be undertaken. Literature will be screened for relevance in a two-step process. Each study will be quality assessed using an evidence-based tool relevant to its methods. Relevant data will be extracted and synthesised using a meta-analytic, or narrative, approach. Discussion: This review will address an identified gap in the knowledge about the types, and outcomes, of services/interventions for people who are homeless with pets. The results may increase recognition about the importance of protecting and promoting the relationship between people who are homeless and their pets, and inform future work

Le syndrome douloureux régional complexe de type 1 : évaluation et traitement en physiothérapie

Travail d'intégration réalisé dans le cadre du cours PHT-6113.Problématique : Le syndrome douloureux régional complexe de type 1 (SDRC-1) est caractérisé par une variété de symptômes moteurs, sensoriels et autonomiques. La présentation clinique varie, mais inclue fréquemment la présence d’une douleur démesurée par rapport au trauma initial. La pathophysiologie étant encore mal comprise, c’est un défi de reconnaître le SDRC-I et de poser le diagnostic clinique et de le traiter. Objectif(s): Recenser les modalités d’évaluation et de traitement en physiothérapie dans la littérature et faire un constat de la prise en charge réelle des patients atteints du SDRC-I dans le Montréal métropolitain. Stratégie méthodologique : Revue de littérature faite à partir des bases de données Medline, Cinahl, Cochrane et Embase ainsi que des rencontres avec 16 différents milieux cliniques de Montréal. Résultats : Les critères diagnostiques de Bruehl(1999) semblent faire consensus. L’Impairment Level SumScore identifie le niveau de sévérité de la pathologie. La physiothérapie est complémentaire aux autres approches thérapeutiques. Le programme d’imagerie motrice (PIM) incluant la thérapie miroir est la modalité de traitement avec la meilleure évidence scientifique. Quoique certaines cliniques utilisent des pratiques appuyées par la littérature, un manque de connaissances et d’uniformité au niveau du PIM et de la prise en charge initiale sont présents dans la majorité des milieux. Conclusion : Les cliniciens doivent tenter de reconnaître les premiers signes du SDRC-1 le plus tôt possible afin d’éviter la persistance de la pathologie. La prise en charge devrait être assurée par une équipe interdisciplinaire et le PIM devrait faire partie du plan de traitement

Disease burden of rotavirus gastroenteritis in children up to 5years of age in two Swiss cantons: paediatrician- and hospital-based surveillance

Rotavirus gastroenteritis (RV GE) is a leading cause of diarrhoea in young children. The purpose of this epidemiological surveillance was to measure the disease burden of RV GE among children <5years of age in two regions of Switzerland, Geneva and Lucerne. One hospital and four paediatricians participated per region. The surveillance lasted from December 2006 to June 2007. The population denominator for calculation of the RV GE incidence rate was the average of the overall study population <5years of age under surveillance during the surveillance period. At the study sites, 513 children with GE were presented. Stool sample was collected and examined in 341 cases, of which 130 were RV positive (38.1%). Informed consent to participate in the study was obtained for 113 RV positive subjects. The overall RV GE incidence rate was 0.97% in Lucerne [lower incidence interval (LCI), 0.71%; upper incidence interval (UCI), 1.2%] compared with 0.65 and in Geneva (LCI, 0.50%; UCI, 0.81%). Disease severity assessments using the Vescari score showed that the RV GE episodes were more severe in Lucerne than in Geneva (14.05 ± 3.05 vs 12.85 ± 2.87), which was confirmed by a higher hospitalisation rate in Lucerne at the study visit (82.9% vs 23.6%). More children had fever in Geneva than in Lucerne (42.9% vs 26.8%), and more children were hospitalised during the follow-up period in Geneva than in Lucerne (14.5% vs 2.5%). Genotyping of RV positive stool samples revealed that both G1 and P8 were the most prevalent types in both regions. There was a statistically significant difference in the distribution frequency of G1 between the two regions (p = 0.039). Assessment of health economic data confirmed the economic burden of RV GE episodes. In conclusion, RV GE episodes are a health burden as well as an economic burden also for the children in a developed country such as Switzerlan

Peak event: the rise, crisis and potential decline of the Olympic Games and the World Cup

This paper tracks the growth of two of the largest tourist events: the Olympic Games and the Football World Cup, drawing on a dataset containing all events between 1964 and 2018. Overall, the size of the three events has grown about 60-fold over the past 50 years, thirteen times faster than world GDP. We identify an S-shaped growth curve and four different growth periods, with an emergent crisis phase in the late 2010s that may have brought us to ‘peak event’ – the point at which these events have reached their largest size. Outlining three different scenarios, we argue that the Olympics and the World Cup are at a critical bifurcation point, which also requires new bidding and hosting policies

Polysaccharide utilization loci and nutritional specialization in a dominant group of butyrate-producing human colonic Firmicutes

Acknowledgements The Rowett Institute of Nutrition and Health (University of Aberdeen) receives financial support from the Scottish Government Rural and Environmental Sciences and Analytical Services (RESAS). POS is a PhD student supported by the Scottish Government (RESAS) and the Science Foundation Ireland, through a centre award to the APC Microbiome Institute, Cork, Ireland. Data Summary The high-quality draft genomes generated in this work were deposited at the European Nucleotide Archive under the following accession numbers: 1. Eubacterium rectale T1-815; CVRQ01000001–CVRQ0100 0090: http://www.ebi.ac.uk/ena/data/view/PRJEB9320 2. Roseburia faecis M72/1; CVRR01000001–CVRR010001 01: http://www.ebi.ac.uk/ena/data/view/PRJEB9321 3. Roseburia inulinivorans L1-83; CVRS01000001–CVRS0 100 0151: http://www.ebi.ac.uk/ena/data/view/PRJEB9322Peer reviewedPublisher PD