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网络虚拟实验中二进制数据的XML传输方法 总被引：1，自引：0，他引：1
网络虚拟实验中二进制数据的XML直接传输方法存在节点数目多,解析困难,不利于网络传输等问题.针对上述情况,采用XML的CDATA域封装的方法对二进制数据进行传输.为了解决由ASCII字符引起的语法错误以及CDATA域的异常结束问题,通过Base 64编码技术对二进制数据进行处理.通过一个虚实结合的球杆系统网络虚拟实验对上述方法进行了验证. 相似文献
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医学期刊的网络化现状与发展 总被引：5，自引：0，他引：5
文章分析了我国医学期刊网络化的意义、现状与问题，提出网络化不仅是医学期刊也是出版业发展的必然趋势，应该转变观念，加速人才培养，健全政策法规，统一技术标准，促进我国医学期刊网络化进一步发展。 相似文献
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OBJECTIVES: The goal of the study was to assess the prevalence of date violence and rape in adolescents, to examine associations between date violence and rape and disordered eating behaviors and psychopathology, and to determine if these associations remain significant after controlling for sociodemographic characteristics and other physical and sexual abuse by an adult. METHOD: A Minnesota school-based sample of 81,247 boys and girls in 9th and 12th grades completed the 1998 Minnesota Student Survey. RESULTS: Overall, approximately 9% of girls and 6% of boys had experienced date violence or rape. Significant differences across race and grade were found. Date violence and rape is associated with higher rates of disordered eating behaviors and suicidal thoughts and attempts, and lower scores on measures of emotional well-being and self-esteem. Over 50% of youth reporting both date violence and rape also reported attempting suicide. Controlling for race and age, adolescents who have experienced both date violence and rape were more likely to use laxatives (OR: girls = 5.76; boys = 28.22), vomit (OR: girls = 4.74; boys = 21.46), use diet pills (OR: girls = 5.08; boys = 16.33), binge eat (OR: girls = 2.15; boys = 5.80), and have suicidal thoughts or attempts (OR: girls = 5.78; boys = 6.66) than their nonabused peers. These odds were weakened but remained significant after controlling for other abuse by an adult. Furthermore, a greater percentage of girls and boys who reported an abusive dating experience also reported repeat victimization (physical or sexual abuse perpetrated by an adult) when compared to their peers without an abusive dating experience. DISCUSSION: Abusive experiences during dating relationships may disrupt normal developmental processes, including the development of a stable self-concept and integrated body image during adolescence. This disruption manifests itself through thoughts, feelings, and behaviors. Further research should explore effects of adverse adolescent dating experiences. 相似文献
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OBJECTIVES: (1) To examine associations between binge and purge behavior and sexual and physical abuse among adolescents; (2) to determine if these associations remain significant after controlling for sociodemographic and anthropometric characteristics; and (3) to identify aspects of abuse associated with binge and purge behavior. METHOD: A nationally representative sample of 6728 adolescents in 5th-12th grades completed the Commonwealth Fund Survey of the Health of Adolescent Girls and Boys. RESULTS: Binge and purge behavior was nearly twice as prevalent among girls (13%) as boys (7%), and was significantly associated with all abuse types (physical, sexual, or both). Associations were strongest among individuals who had experienced both physical and sexual abuse [odds ratios 4.28 (girls) and 8.25 (boys)]. Differences in binge and purge behavior by gender and type of abuse across abuse characteristics were limited. A higher percentage of abused youth that did not discuss their abuse reported binge-purge behavior than those who did discuss their abuse. Abused girls and boys who did talk to someone about the abuse most often discussed the abuse with their best friend (42.5% and 18.0%, respectively), their mother (38.8% and 32.2%, respectively), and their friends (27.2% and 19.5%, respectively). DISCUSSION: Being physically and/or sexually abused was associated with greater likelihood for engaging in binge and purge behaviors. Discussing the abuse experience with another person may help to reduce binge-purge behavior, as abused adolescents who did not discuss the abuse were more likely to report binge-purge behavior than those who did discuss their abuse. 相似文献
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K Reshma V Rao Ashalatha M Dinesh DM Vasudevan 《Indian journal of clinical biochemistry : IJCB》2005,20(1):160-164
Flavonoids extracted from the leaves of Indian holy basil, Ocimum sanctum showed promising results as radioprotector in rodents.
Hence it was thought pertinent to analyze the antioxidants of erythrocytes in oral cancer patients who were concurrently treated
with radiation and ocimum flavonoids. Oral cancer patients consisted of 2 groups. Group A (n=17) received radiation alone
while Group B(n=17) received radiation and ocimum flavonoids(OF). Samples of heparinised blood were collected prior to treatment,
15 and 30 days respectively after treatment. Blood from normal healthy volunteers were taken as controls (n=25). Erythrocytes
were analyzed for the antioxidants viz. glutathione, glucose 6 phosphate dehydrogenase, glutathione peroxidase and superoxide
dismutase by the standard methods. Results of analysis indicated that erythrocytes from cancer patients (Group A and B) had
significantly high glutathione levels before as well as after treatment compared to controls. It was observed that Group B
which received OF showed a significant reduction in glutathione levels in comparison with Group A. All the other parameters
showed no statistical significant changes. Results of the study suggest that erythrocytes from cancer patients responded to
oxidative stress by elevating glutathione levels, while a decrease in glutathione levels observed in Group B, could be due
to the free radical scavenging effect of OF, sparing the glutathione. However OF did not seem to exert its effect on other
antioxidants of erythrocytes. 相似文献
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优质、稳定的教师队伍是学生学习的保障,美国为应对教师流失付出了沉重的代价。以芝加哥公立学校为代表,从学校管理层面的研究发现:影响教师流失的因素可归为学校结构、教师自身特点、学生特点和工作氛围4个维度。学校要稳定教师队伍提供有质量的教师,需加强对新任教师引导项目的投入和关注;创建良好的工作氛围以吸引教师留下;协助教师提升课堂管理能力等。这对于目前我国学校如何保证优质、稳定的教师队伍有一定借鉴意义。 相似文献
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Independence, invariance and the causal Markov condition 总被引：4，自引：0，他引：4
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