网络虚拟实验中二进制数据的XML传输方法

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.     

Marginalizing women: images of pregnancy in williams obstetrics

This research analyzes the historical development of the medical construction of the pregnant body in 17 of 20 editions of Williams Obstetrics, an obstetrical textbook published continually from 1904 to 1997. Examination of the visual imagery of these works produced three key findings. First, depictions of the healthy or “normal” pregnant body are virtually absent throughout the series. Second, visual depictions of women's full bodies adhere to a race-based hierarchy of presentation. Finally, the fundamental discourse about pregnant and female bodies communicated to physicians (primarily) by these images is one of pathology and fragmentation. We conclude that the resulting social and medical construction of the pregnant and female body presented in the Williams series is one of disembodiment, abjection, and ultimately marginality. These findings support recent feminist research that criticizes both the increasing erasure of the person of the women from the medical interpretation of pregnancy and the concomitant decrease in women's perceived sense of empowerment as pregnant beings.     

医学期刊的网络化现状与发展

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。     

The role of "genetics" in popular understandings of race in the United States

The increase in public representation of the science-based concept "genetics" in the mass media might be expected to have a major impact on public understanding of the concept of "race." A model of lay understandings of the role of genetics in the contemporary United States is offered based on focus group research, random digit dial surveys, and community based surveys. That model indicates that lay people identify are primarily by physical features, but these identifications are categorized into a variety of groupings that may be regional, national, or linguistic. Although they believe that physical appearance is caused largely by genetics, and therefore that race has a genetic basis, they do not uniformly conclude, however, that all perceived racial characteristics are genetically based. Instead, they vary in the extent to which they attribute differences to cultural, personal, and genetic factors.     

Race and Genetics from a Modal Materialist Perspective

Prevailing idealist and materialist theories of rhetoric fail to account for the continual circulation and recirculation of “racism” as a scientific discourse. An alternative theory of modal materialism addresses this problem by suggesting that the properties of all being are constituted through three distinguishable forms of matter that include the “physical,” the “biological,” and the “symbolic.” A sufficiently lush and nimble conceptualization of human action requires consideration of the interaction of all three modes in theory and in practice. The theory of modal materialism is illustrated through a consideration of the discourse of race and genetics as it was recirculated and modified in 2005 and 2006 by publications in the journal Science, and which were amplified for a larger reading public through circulation in the New York Times.     

The discoverability of award-winning undergraduate research in history: Implications for academic libraries

Making scholarly information visible to web search engines is an ongoing challenge, and undergraduate research is no exception. Using a sample of award-winning undergraduate history papers and journals, the authors searched Google, Google Scholar, Microsoft Academic, and the authors' institutional repository to gauge the difficulty of locating these works. Given that many of these works were not easily found, results suggest that libraries and their institutions could be doing more to increase the discoverability of undergraduate research. Based on the success stories observed in this study, we offer strategies to libraries and librarians for increasing the visibility of undergraduate student research.     

Effect of ocimum flavonoids as a radioprotector on the erythrocyte antioxidants in oral cancer

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.