我校撑竿跳高运动员的训练

总结我校两届学生撑竿跳高训练的经验,对于初次接触撑竿跳高运动且经短时间训练就参加比赛的运动员,如何进行训练更能适应省大运会比赛的要求,并取得较好成绩进行了有益的尝试。     

Assessment of Teacher Reactions to a Standards-Based Teacher Evaluation System: A Pilot Study*

This article reports on teachers' reactions to a pilot implementation of a new standards-based teacher evaluation system in a medium-sized Midwestern school district. The system, based on the Framework for Teaching (Danielson, 1996), was intended to serve as the foundation for a new knowledge and skill pay plan for teachers. Teacher reactions were measured using both interview and survey methods. Teachers' overall favorableness toward the system, as measured by the survey, was correlated with acceptance of the teaching standards, perception of the evaluation process as fair and the evaluator as capable and objective, and perception that the evaluation system had a positive impact on their teaching. In interviews, teachers perceived both positive and negative aspects of the system, and for many these more or less balanced each other. While most teachers accepted the evaluation standards and the need for an evaluation system, many also perceived that the system added too much to teachers' workloads and did not provide enough feedback. Based on these results several changes were made in the evaluation system prior to full implementation. The results are discussed with reference to previous research and the Personnel Evaluation Standards.     

草苁蓉花序多糖BJⅡa的分离提纯与结构研究

利用溶剂提取与DEAE—Sephadex A—25柱层析进行分离,根据高碘酸氧化、Smith降解,部分酸水解、甲基化及其产物的G.C.和G.C.—M.S.联机分析鉴定其结构.得出BJⅡa是多分枝结构的中性杂多糖,其主链是由1→2连接的葡萄糖和岩藻糖构成。     

Home: A Feeling Rooted in the Heart

Culturally diverse as they are, Asian-American children and youth share quite a few features among themselves. Most of them are children of foreign-born parents who came to America during the post-1965 immigration waves. As they grow up in culturally isolated environment, they are often faced with identity crisis. The society’s racial exclusion makes them feel like “forever foreigners,” while at home or community their American frame of reference is often in conflict with parents’ traditional values. As a result, they develop a flexible concept of identification. In fact, they are a part of but also apart from the American mainstream culture.     

Lecturers on teaching within the ‘supercomplexity’ of Higher Education

While a vast literature exists on students and their learning, work on lecturers and their teaching continues to lag some way behind. This paper explores the notion that the complexity of Higher Education (HE) today significantly impacts upon what goes on in the classroom through a two-tiered study. Semi-structured interviews were conducted to explore lecturers’ perceptions and experiences of teaching a specific module. Interviewees raised issues pertaining to the wider departmental, institutional and socio-political context. Consequently, focus groups were run with key people in the University to explore their perceptions of teaching and learning within the current HE climate. The findings suggest that lecturers perceive numerous external factors to impinge upon their teaching and attempt to militate against these in various ways in order to achieve ongoing enhancement of learning for students.

Predicting transition and adjustment to college: biomedical and behavioral science aspirants’ and minority students’ first year of college

The purpose of this study is to explore key factors that impact the college transition of aspiring underrepresented minority students in the biomedical and behavioral sciences, in comparison with White, Asian students and non-science minority students. We examined successful management of the academic environment and sense of belonging during the first college year. Longitudinal data were derived from the Higher Education Research Institute’s (HERI) 2004 Cooperative Institutional Research Program (CIRP) Freshman Survey and the 2005 Your First College Year (YFCY) Survey. Using a reformulation of the integration model (Nora, Barlow, and Crisp, 2005), we find concerns about college financing, negotiating family support and responsibility, and campus racial dynamics (perceived and behavioral) affect student adjustment and sense of integration in the first year. This study was made possible by the support of the National Institute of General Medical Sciences, NIH Grant Number 1 RO1 GMO71968-01. This independent research and the views expressed here do not indicate endorsement by the sponsor.     

扰动的线性方程组通解的Huang算法

本文给出了求解扰动后新方程组的直接方法，它简捷，计算量和存贮量都不大，数值结果也表明它是相当有效的。对于替换多个方程的情况，用本方法均可直接处理。     

Maternal mediation in book reading, home literacy environment, and children’s emergent literacy: a comparison between two social groups

The researchers addressed two questions: (1) Does maternal reading mediation and family home literacy environment (HLE) relate to children’s emergent literacy (EL) level? and (2) Do the relationships among these variables differ as a function of socioeconomic strata (SES) level. A total of 94 5–6-year-old children, 47 from low SES (LSES) and 47 from high (HSES) families, and their mothers participated. Mother–child interactions while reading an unfamiliar book were videotaped and their verbal expressions were coded for extracting maternal mediation level. Children’s independent EL level was assessed prior to the interaction. Compared with the LSES group, HSES children showed higher EL levels and their homes had a richer literacy environment. Maternal mediation level differed by SES: LSES mothers paraphrased text more often; HSES mothers’ higher mediation level included a discussion of the written system and making connections beyond the text. In the HSES group, maternal mediation level and HLE related to children’s EL; no such relationships appeared in the LSES group. Results are discussed in terms of children’s socio-economic background and their reading experiences. Implications for researchers and educational practices about the relationships between children’s literacy development, SES, HLE, and parental mediation are discussed.     

冻融、温度等理化因素对卵黄抗体AGP效价的影响

按常规方法制备抗鸡传染性法氏囊炎卵黄抗体（ｙｏｌｋａｎｔｉｂｏｄｙ，ＹＡ），经冻融、温度、机械振荡、光照和防后剂（０．０１％流柳汞、０．０１％叠氮钠和０．５％苯酚）等处理后测定其琼脂扩散试验（Ａｇａｒｇｅｌｎｒｅｄｒｉｔａｔｉｏｎ，ＡＧＰ）效价的变化．实验结果表明，冻融毛次后卵黄抗体的ＡＧＰ效价自１：６４降至１：３２，冻融６次降至１：１６，０．５％苯酚的存在使ＹＡ的ＡＧＰ效价自１：６４降至１：１６；其它物理因素对ＹＡ的ＡＧＰ效价影响不明显．     

“科尔曼报告”述评——兼论对我国解决“上学难、上学贵”问题的启示

“科尔曼报告”是在二战后随着教育平等、教育民主化思潮的出现以及美国民权法案对教育机会均等现状调查的要求而产生的。报告对美国教育机会均等的现状和影响因素进行了科学的分析,认为校际间差距对不同种族的学生有不同的影响,造成儿童学习水平低的原因,主要不是学校的物质条件,而是学校内的社会因素。“科尔曼报告”深刻地影响了教育机会均等的理论研究与政策实践,对分析和探讨当前我国“上学难、上学贵”问题具有重要的借鉴意义。