广义岭选择指数(英文)

把岭回归的原理和方法应用到家畜性状的选择指数中 ,提出了广义岭选择指数 ,理论和实践证明的这一指数形式在一定意义上优于传统的选择指数。也可以说 ,它在一定意义上丰富了选择指数的理论 ,但不能代替经典的选择指数     

从胡文化“汉化”看生态环境的迁移对文化转型的影响

不同文化特质的形成 ,除受政治经济影响外 ,还受特定生态环境的制约。胡汉两大文化体系的差异 ,在很大程度上就是不同生态环境作用的结果。与此相应 ,文化的发展一旦脱离了与自身相适应的环境 ,就势必要出现势能上的劣势 ,并逐渐与异地文化相溶     

脉宽调制型DC—DC变换器的线性描述函数分析法

介绍了一种分析开关变换器的新方法－线性描述函数法的理论证明及实验结果,这种方法具有精确度高的优点。     

DNA芯片技术

DNA芯片可用于核酸序列的测定及基因突变检测等,这里对DNA芯片的制作、作用原理、性能及用途等进行了综述。     

鲇鱼(Silurus asotus)产卵类型的研究

本文侧重研究了站鱼个体生殖力及产卵类型。结果表明：雌性个体1冬龄达性成熟,性腺一次成熟,卵子分批产出,产卵期是6—8月份,性成熟系数在7月份达高峰,8月份是产卵盛期,在产卵前的卵巢切片只发现有第4时相和第5时相卵母细胞,确定产卵类型为一次产卵。     

PSS码词组输入法及教学实践

本文介绍了PSS码（拼音、声调、首笔码）汉字输入法的词组编码及输入方法,并总结了PSS码作为一门选修课的教学效果。     

A gender comparison of HIV and drug use across the rural-urban continuum

Despite the central role of women drug users in escalating AIDS statistics, there is still a limited number of studies that examine the roles of gender and drug use type in HIV seroprevalence. This lacuna in the research literature has led to significant gaps in researchers' understanding of how and to what extent women may differ in their drug-using and HIV risk behaviors compared to their better-studied male counterparts. This study, derived from a sample of 3,555 out-of-treatment drug users residing in three South Florida urban and rural communities, attempts to compare the drug usage and needle and sexual risk behaviors of male and female drug users that put them at risk for HIV infection. The overall seropositivity rate for women drug users was 26.5% compared to 19.5% for their male counterparts. Results of multivariate analyses indicate that females compared to males were 1.4 times more likely to be HIV seropositive. Risk behaviors associated with this elevated seropositivity include living arrangements, homeless status, drug use, sexual trading behaviors, and history of STDs. Furthermore, there was a strong linear relationship between drug use type and HIV seroprevalence among women drug users. Compared to those who were neither crack smokers nor injectors of illicit drugs, those who were crack smokers only were 2 times more likely to be HIV seropositive, while those who were both crack smokers and injectors were 5 times more likely to be HIV seropositive, and those who were injectors only were 6 times more likely to be HIV seropositive. These findings indicate that among women, drug abuse and its associated risk behaviors, increase the vulnerability of this population for HIV and thus render them an extremely important priority population on which to focus HIV prevention and public health efforts and programs.     

关于和谐社会视野下的生态伦理观的理性思考

人与自然的关系问题已成为构建和谐社会过程中倍受关注的一个重要论域。本文首先对西方生态伦理学的主要派别及其主要观点进行简单的罗列和评析,然后对我国生态伦理学的传统资源、研究现状、争论以及主要观点等方面作了简明扼要的理论梳理,在此基础上,作者对构建和谐社会视野下的生态伦理观进行了一定程度的理性思考。     

高管层团队人口特征与公司业绩关系的实证研究

以沪深两市156家上市公司为研究样本,考察了我国企业高层管理团队人口特征与组织绩效之间的关系。研究发现,我国上市公司高管人员管理背景的多样性和平均年龄对企业业绩有显著的促进作用,但高管团队平均学历水平及学历水平的差异性对企业业绩的影响不显著。     

历代中央领导集体对建设中国特色社会主义生态文明的探索

党的十七大报告首次提出的生态文明,是马克思主义文明观在中国发展的最新理论成果。这一成果,是新中国成立后历代中央领导集体以战略眼光,高度重视和长期探索生态环境建设得出的重要实践结论,更是中国共产党在新时期对人类文明发展作出的重要理论贡献。中国特色社会主义生态文明,既是实践发展的过程,又是理论探索的过程。