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11.
Disentangling the Weight of School Dropout Predictors: A Test on Two Longitudinal Samples 总被引:1,自引:0,他引:1
Janosz Michel LeBlanc Marc Boulerice Bernard Tremblay Richard E. 《Journal of youth and adolescence》1997,26(6):733-762
The aims of this study are to identify the most powerful predictors of school dropout and to determine how stable they are over time. Two generations of White French-speaking boys and girls from 12 to 16 years old (n = 791 in 1974, n = 791 in 1985) completed a self-administered questionnaire on their psychosocial adjustment at least one year before leaving school. As expected, the analyses showed that school, family, behavioral, social, and personality variables could all predict dropping out of school in the two samples. Furthermore, these predictors were quite stable over time. However, statistical improvement measures in logistic regression analyses indicated that school experience variables (i.e., grade retention, school achievement, school commitment) were the best screening variables for potential dropouts. The contribution of other psychosocial variables, even though significant, did not improve very much the capacity to identify who will drop out of school. The discussion highlights the implications of the findings for secondary prevention and screening practices. 相似文献
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A literature search was conducted to collect randomized controlled studies evaluating the outcome of psychological and psychosocial interventions after attempted suicide and deliberate self-harm. Twenty-five studies meeting the inclusion criteria were identified. The studies are grouped according to the psychological approach chosen for the intervention. They are discussed with regard to both the various therapeutic strategies and models used, and the repetition of self-harming behavior as the main outcome. 相似文献
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De Letter EA Bouche MP Van Bocxlaer JF Lambert WE Piette MH 《Forensic science international》2004,141(2-3):85-90
The amphetamine derivative 3,4-methylenedioxymethamphetamine (MDMA, "Ecstasy" is a currently used or abused designer drug and fatalities are frequently encountered in forensic practice. However, the question remains open whether an MDMA blood level can be toxic or even potentially lethal. In order to provide insight in the interpretation of a detected MDMA concentration, the distribution of MDMA and its metabolite 3,4-methylenedioxyamphetamine (MDA) in various body fluids and tissues was studied and discussed in two different fatalities. Apart from peripheral blood samples (such as femoral and subclavian blood), various blood samples obtained centrally in the human body and several body fluids (such as vitreous humour) were examined. In addition, various tissues such as cardiac muscle, lungs, liver, kidneys, and brain lobes were analysed. In contrast to the peripheral blood levels, high MDMA and MDA levels were found in cardiac blood and the majority of the organs, except for the abdominal adipose tissue. The high concentrations observed in all lung lobes, the liver and stomach contents indicate that post-mortem redistribution of MDMA and MDA into cardiac blood can occur and, as a result, blood sampled centrally in the body should be avoided. Therefore, our data confirm that peripheral blood sampling remains "the golden standard". In addition, a distinct difference in peripheral blood MDMA concentrations in our two overdose cases was established (namely 0.271 and 13.508 microg/ml, respectively). Furthermore, our results suggest that, if a peripheral blood sample is not available and when putrefaction is not too pronounced, vitreous humour and iliopsoas muscle can be valuable specimens for toxicological analysis. Finally, referring to the various mechanisms of death following amphetamine intake, which can result in different survival times (e.g. cardiopulmonary complications versus hyperthermia), the anatomo-pathological findings and the toxicological results should be considered as a whole in arriving at a conclusion. 相似文献
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Michel Nakhla 《European Journal of Law and Economics》2016,42(3):445-469
Using an incomplete contract framework, we analyse new forms of regulation and private participation in public services. This paper explains contractual efficiency in the absence of financially guaranteed investments in public private partnerships. The example of a number of African countries underlines how a series of national, normative law reforms can give rise to innovations in approaches to regulation. This new hybrid form of regulation, inspired by a French regulation approach combining commission regulation and franchise bidding, could be more effective than previous approaches to regulation, in the sense of being more stable and more closely aligned with stakeholder expectations. This approach to regulation would appear to be more efficient economically, while integrating the objectives of solidarity tariffs and social water access connections. Based on these analyses, our results show (1) the impact on the robustness of new lease contracts on financing constraints, and (2) the advantages of Asset Owner Companies that reconcile explicit commitments and special purposes. We demonstrate that this achieves optimum efficiency by encouraging parties to determine jointly the optimal level of costs and investment. In addition, the mechanism fosters discussion about the possibility of institutionalizing Asset Owner Companies by predetermining the distribution of risk in lease contracts. 相似文献
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Michel Bruneau 《当代亚洲杂志》2013,43(3):343-359
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