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OBJECTIVE: The goal of this study was to examine the association between sexual abuse (SA) and initiation, cessation, and current cigarette smoking among a large representative adult population in France. METHOD: A random sample size of 12,256 adults (18-75 years of age) was interviewed by telephone concerning demographic variables, health practices and beliefs, and health status--for which SA and tobacco questions were included. Bivariate and multivariate analyses were conducted. RESULTS: Nearly 46% of SA survivors were current smokers compared to 34% of non-abused persons (p<.001). Survivors of SA consumed more cigarettes per day than non-abused individuals (14.5 vs. 12.4, p<.01). Survival analysis showed an increased risk of smoking initiation for respondents abused before 18 (adjusted relative hazard=1.55; p<.0001) with referent to the non-abused group. SA was not found to be a significant predictor of current smoking status among those who began smoking after the first incident of SA. Respondents who were not sexually abused were 1.8 times (95% CI, 1.12-2.99) more likely to quit smoking than people who began smoking after they were sexually abused. CONCLUSIONS: The early identification and treatment of sexually abused persons is critical to decrease smoking among adolescents and adults because of the association of SA with both smoking initiation and decreased cessation rates. It may be more difficult to detect an association between SA and current smoking due to the high rates of smoking and lower rates of quitting among the general French population. 相似文献
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Farzad Ashrafi Hafez Mohammadhassanzadeh Farhad Shokraneh Ali Valinejadi Karim Johari Nazanin Saemi Alireza Zali Niloofar Mohaghegh Hassan Ashayeri 《Health information and libraries journal》2012,29(4):323-332
Objective: The purpose of this study is to analyse Iranian scientific publications in the neuroscience subfields by librarians and neuroscientists, using Science Citation Index Expanded (SCIE) via Web of Science data over the period, 2002–2008. Methods: Data were retrieved from the SCIE. Data were collected from the ‘subject area’ of the database and classified by neuroscience experts into 14 subfields. To identify the citation patterns, we applied the ‘impact factor’ and the ‘number of publication’. Data were also analysed using HISTCITE, Excel 2007 and SPSS. Results: Seven hundred and thirty‐four papers have been published by Iranian between 2002 and 2008. Findings showed a growing trend of neuroscience papers in the last 3 years with most papers (264) classified in the neuropharmacology subfield. There were fewer papers in neurohistory, psychopharmacology and artificial intelligence. International contributions of authors were mostly in the neurology subfield, and ‘Collaboration Coefficient’ for the neuroscience subfields in Iran was 0.686 which is acceptable. Most international collaboration between Iranians and developed countries was from USA. Eighty‐seven percent of the published papers were in journals with the impact factor between 0 and 4; 25% of papers were published by the researchers affiliated to Tehran University of Medical Sciences. Conclusion: Progress of neuroscience in Iran is mostly seen in the neuropharmacology and the neurology subfields. Other subfields should also be considered as a research priority by health policymakers. As this study was carried out by the collaboration of librarians and neuroscientists, it has been proved valuable for both librarians and policymakers. This study may be encouraging for librarians from other developing countries. 相似文献
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Let G be a weighted graph with adjacency matrix A=[aij]. An Euclidean graph associated with a molecule is defined by a weighted graph with adjacency matrix D=[d/ij], where for i≠j, dij is the Euclidean distance between the nuclei i and j. In this matrix dij can be taken as zero if all the nuclei are equivalent. Otherwise, one may introduce different weights for different nuclei.Balasubramanian (1995) computed the Euclidean graphs and their automorphism groups for benzene, eclipsed and staggered forms of ethane and eclipsed and staggered forms of ferroeene. This paper describes a simple method, by means of which it is possible to calculate the automorphism group of weighted graphs. We apply this method to compute the symmetry of tetraammine platinum(Ⅱ) with C2v and C4v point groups. 相似文献
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To stabilize both amplitude and frequency of the second-order harmonic oscillator double-fold sliding mode control is employed. The first, integral sliding mode control, is used to compensate for the disturbance/uncertainty, which is unmatched by the second control. The second sliding mode control is designed to achieve the stabilization of the harmonic oscillator system while the system is in the integral sliding mode. The first (integral) and second sliding mode controls are implemented in both formats: traditional sliding mode control that requires high-frequency oscillating control action and second-order sliding mode (super-twisting) control that is continuous and provides for the higher accuracy of stabilization. It is shown that the output of the double-fold sliding mode controlled second-order harmonic oscillator is robust to bounded disturbances and model parameter uncertainties. Computer simulations are performed to manifest the theoretical analysis. 相似文献
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ABSTRACTUniversity student perceptions of effective teaching have been explored in previous studies, however, research is lacking regarding how perceptions of teaching efficacy vary by ethnicity and programme of study. In this study, student perceptions of effective teaching are explored between STEM (Science, Technology, Engineering, and Mathematics) and non-STEM major students of four ethnic groups: Europeans, Asians, Māori, and Pasifika. The study sample comprised 2073 students from a New Zealand university who completed a survey in 2016. Firstly, the findings indicated that non-STEM major students were more likely to report culturally knowledgeable as an important characteristic compared to STEM major students. Secondly, the distribution referring to content knowledgeable, creative, culturally knowledgeable, and passionate as characteristics of effective teaching was different between the four ethnic groups. In detail, Europeans and Māori were more likely to refer to content knowledgeable than Pasifika students, while Pasifika students were more likely to refer to culturally knowledgeable compared to Europeans. Furthermore, the highest percentage of referring to creative as a characteristic of effective teaching was for Asians, and the highest percentage of referring to passionate was for Māori students. The findings imply that lecturers should be well informed about these differences to be able to improve the quality of their teaching and student learning. 相似文献
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OBJECTIVE: The aim of this article is twofold: first, to examine the prevalence of being the victim of actual and attempted rape among a large representative sample of Cape Town high school students; and second, to identify the correlates of sexual assault for both boys and girls, including alcohol, tobacco and other drug use, behavioral problems, and suicidality. METHOD: Data for this study were derived from the 1997 South African Community Epidemiology Network on Drug Use (SACENDU) school survey. A stratified sampling procedure was used to select students in Grades 8 and 11 at non-private high schools in Cape Town. A total of 2,946 students completed a survey consisting of socio-demographic questions and items about substance abuse, sexual activity, and other adolescent health risk behaviors. A subsample of 939 was randomly selected to complete items about sexual violence. RESULTS: The results revealed that 8.4% of respondents were victims of attempted rape, while 5.8% were victims of actual rape. Ordinal logistic regression showed that girls were 3.9 times more likely than boys to have been victims of sexual abuse. Family structure was also significantly related to rape as persons who lived with a single parent (OR = 1.74, CI = 1.00-3.04) and those who resided with one biological parent and one step parent (OR = 2.59, CI = 1.34-5.01) were more likely to have been have been victims of sexual abuse than those living with both biological parents. Alcohol use (OR = 2.0, CI = 1.10-3.62), anti-social behavior (stolen property, caused physical damage to property, bullied others, or been in physical fights) (OR = 1.44, CI = 1.12-1.86), suicidal dialogue (OR = 2.48, CI = 1.19-5.19), and suicidal attempts (OR = 3.2, CI = 1.65-6.30) were also significant predictors of sexual abuse victimization. Racially classified social groups (RCSG), age, drug use, and cigarette smoking were not significant predictors of sexual abuse victimization, while socioeconomic status was found to be marginally significant. CONCLUSION: This study reinforces the importance of multiple factors including alcohol use, anti-social behavior, suicidal thoughts and actions, and family structure with respect to sexual assault of adolescents in South Africa. Establishing and strengthening intervention programs, school based child protective protocols, professional education of teachers and school personnel, community prevention programs, and initiatives could help prevent adolescent sexual violence and reduce the sequelae associated with this problem. 相似文献
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The success or failure of any team lies in the skills and abilities of the players that comprise the team. The process of player selection and team formation in multi-player sports is a complex multi-criteria problem where the ultimate success is determined by how the collection of individual players forms an effective team. In general, the selection of soccer players and formation of a team are judgments made by the coaches on the basis of the best available information. Very few structured and analytical models have been developed to support coaches in this effort. We propose a two-phase framework for player selection and team formation in soccer. The first phase evaluates the alternative players with a fuzzy ranking method and selects the top performers for inclusion in the team. The second phase evaluates the alternative combinations of the selected players with a Fuzzy Inference System (FIS) and selects the best combinations for team formation. A case study is used to illustrate the performance of the proposed approach. 相似文献
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