"粉领”阶层社会存在与自我认同

粉领阶层的出现是中国经济与社会变迁的产物。木文考察了现代中国城市中粉领女性的生活状态、阶层地位与自我认同，认为粉领阶层处于社会结构的中间阶层，其阶层认同正处于建构发展之中，其性别角色观念则介于现代与传统之间。     

铁离子掺杂TiO2基自洁净玻璃的制备及性能

用溶胶—凝胶法制备了表面镀有Fe—TiO2光催化薄膜的自洁净玻璃，并利用DTA—TG，XRD，SEM等手段研究了Fe—TiO2光催化薄膜的结构与特征。利用紫外—可见光分光光度计测量了不同镀膜层数的玻璃的透光率。通过光催化降解有机磷农药敌敌畏的水溶液，研究了不同铁含量以及不同镀膜层数对自洁净玻璃光催化活性的影响。研究结果表明：光催化薄膜主要由粒径为几十纳米的Fe3O4和TiO2颗粒构成；铁离子掺杂可以提高自洁净玻璃的光催化活性，在同样镀膜层数(2层)的情况下，[Fe]/[TiO2](摩尔比)＝0．005时的光催化性能最好；当用同样浓度的铁离子掺杂时，镀膜层数为9的光催化活性最高。     

自我效度对单词记忆的影响

采用班杜拉的自我效度理论,在大量实证调查的基础上,考察其与单词记忆的关系,为英语词汇教学提供启示.研究表明,较之其它认知或情感因素,自我效度能对学生的学习动机、目标及结果作出更准确的预测和解释.自我效度强的学生在记忆的规律性、记忆方法的技巧性及自我调控的科学性上都要明显优于效度弱的学生.     

Can the presence of a large conspecific improve the production and welfare of groups of smaller self‐feeder competent rainbow trout?

This study examined the production and welfare effects of including a large self‐feeder competent rainbow trout, Oncorhynchus mykiss (Walbaum) (~665 g) in groups of smaller self‐feeder competent conspecifics (~234 g). Costs and benefits were examined for both welfare (aggression, fin damage, condition and mortality) and production (self‐feeder utilization and growth). The 8‐week experiment used six groups of small trout; three treatment groups containing a large trout and three control groups. After 4 weeks the large fish were removed from treatment groups and added to control groups, thus reversing the treatments. Whilst it was thought that the presence of a larger fish would suppress aggression in smaller conspecifics this did not occur. In fact aggression was significantly (P = 0.036) higher when large trout were present during the first 4 weeks. No significant differences were found between other welfare indicators, self‐feeder utilization or production parameters. From a production and welfare perspective these results suggest that with the exception of initially increasing aggression larger fish do not represent a significant benefit or risk to smaller conspecifics being cultured in self‐feeder equipped tanks, when all fish are self‐feeder competent.     

美国军事司法禁止强制性自证其罪规则解读

美国军事司法禁止强制性自证其罪规则,与"米兰达规则"有着本质区别。尽管二者在法源上相同,但建立的规则不同。美国军事司法禁止强制性自证其罪规则确立了禁止刑讯逼供原则、预先告知原则和非法证据排除规则,但虐囚事件充分暴露了美国军事司法禁止强制性自证其罪规则的本质。     

高校课堂自主学习法的理论与实践

针对目前高校课堂教学指导思想、手段、效果等存在的问题，本从“学”的角度出发，综合考虑学生的心理、生理特点，提出使学生从传统课堂的被动学习过程，变为在教师引导下合理、有序的自主学习过程，做到因材施教，有的放矢。实现一种被广大学生所接受的“自愿、自主、自理”的课堂教学方法，该方法以激发学生学习兴趣、活跃课堂气氛为表现形式，以牢固掌握所学知识，自觉向深度和广度扩展为最终目标。     

鲁梅克斯K-1杂交酸模传粉生物学研究

利用去雄、套袋、人工授粉方法研究不同授粉方式和授粉时间对鲁梅克斯K-1杂交酸模结实率的影响。结果表明,鲁梅克斯K-1杂交酸模自花授粉、异花授粉都能正常结实,结实率达95%以上。异花授粉最佳时间为花开放后1~6 h。花粉量大。风媒传粉,未见昆虫访问。     

基于建构主义理论的网络课程建设与研究

在建构主义理论指导下,利用情境、协作、会话、意义构建等关键因素,发挥教师的指导者作用,调动学生的主动性、创新性,实现学生对当前所学知识的有效建构。基于建构主义理论,提出了网络环境下的《高级语言程序设计》教学网站设计方案,实践表明,方法可行、效果显著,对网络环境下的计算机教学有很好的启示。     

Self‐thinning models for even‐aged stands of Pinus sylvestris,Picea abies and Betula pendula

Self‐thinning models were developed to describe the relationship between the stem number and mean diameter of even‐aged and monospecific tree stands undergoing self‐thinning. The models were developed separately for Pinus sylvestris L., Picea abies (L.) Karst. and Betula pendula Roth. stands. Data from 41 unthinned permanent sample plots were used. According to Reineke's equation and the —3/2 power rule of self‐thinning, a log‐log plot of average tree size and stem density will give a straight, self‐thinning line of constant slope. According to this study, the slope of the line consistent with Reineke's equation varies for different tree species. Within tree species, the intercept of the self‐thinning line varies according to site index.