针对特点讲求方法提高艺术性--新时期青年思想政治工作之我见

在改革开放和建立社会主义市场经济体制进程中,青年人的思想发生了复杂而深刻的变化,青年思想政治工作也随之面临新的考验.研究和分析新时期青年思想政治工作的特点和艺术性,在内容、形式、方法等方面进行创新和改进,是现阶段做好青年工作的当务之急.     

中子测厚的研究

本文报告了利用慢中子透射法测量钢板厚度的研究结果．     

Fe(Ⅲ)-H2O2-甲基紫体系催化褪色光度法测定痕量铁(Ⅲ)

研究了Fe(Ⅲ)在酸性介质中催化双氧水甲基紫体系的氧化褪色反应,提出一种测定痕量Fe(Ⅲ)的新方法,体系的最大吸收波长为566nm,Fe(Ⅲ)含量在4～12μg*ml-1符合朗伯-比耳定律,回归方程为ΔA=0.00775C+0.05,相关系数γ=0.9930,最低检出限为2.75×10-7g*ml-1,相对标准偏差为1.83%,结果令人满意.     

Differences in Graduation Rates Between Young Black and White College Students: Effect of Entry into Parenthood and Historically Black Universities

Black and White students who enrolled in college by age 20 were selected from a national probability sample, in order to estimate the prevalence of having children and the effect of having a child on probability of graduation with a bachelors degree. Black students reported significantly higher rates of having children than White students, but rates for Black students at historically Black universities were similar to those of Black students at predominantly White universities. After controlling for family background, achievement, and other student characteristics, having a child within 5 years of starting college generally reduced the probability of graduating with a bachelors degree for Black women and White women and men. The independent effect of attending a historically Black college was significantly positive for Black women but not statistically significant for Black men.     

Stability and electronic spectra of C76N2 isomers

INTRODUCTION The synthesis and characterization of het-erofullerenes are very challengeable research topics because of application in superconductivity, photo-electronics, organic magnetism and even nanotubes. Pradeep et al.(1991) studied the interaction between nitrogen and fullerenes and obtained nitrogen deriva-tives of C60 and C70 such as C59N2, C59N4, C59N6 and C70N2 by contact-arc vaporization of graphite in a partial N2 or NH3 atmosphere. Yu et al.(1995) syn-thesized carbon n…     

“Hispanic” children: Theoretical,empirical, and related policy issues

Not only are school-age ethnic and racial minority children one of the fastest growing segments of the U.S. population, they are also one of the most vulnerable. Hispanic children in particular are representative of the at-risk status of minority populations, displaying a portrait of unrealized social, educational, and employment success. This paper addresses the background and history of U.S. social and educational policies as they relate to the Hispanic student. Recent empirical findings are presented which support the following: (a) the bilingual character of Hispanic children is not a linguistic, cognitive, or educational liability and, in fact, should be employed to promote academic achievement; (b) the culture of the Hispanic family and child are better understood with regard to socialization variables and the potential differences they produce when directly compared to Anglo culture; and (c) educational strategies for Hispanic students that respect and integrate students' social, psychological, and linguistic attributes serve students effectively.     

加入WTO与西部地方政府管理职能的转变

中国加入WTO，受影响最大的是政府，受冲击最大的是西部地区，西部地方政府转变管理职能成为当务之急，加入WTO要求政府依法行政、公正行政、推动市场开放、充分运用权利、具备较强管理能力。适应加入WTO后新形势，西部地方政府应完善宏观调控职能，加强市场监管职能，改进国有资产管理职能，健全公共服务职能，开拓扶持产业发展和企业提高国际竞争力的职能。     

假设、推测和征询“VP0呢？”

“VP0呢?”有多种语义类别,这些类别能够概括为带有形式标记的各种句法格式,假设、推测、征询“VP0呢?”疑问句是这些类别中的重点。假设和推测“VP0呢?”的形式和意义都有较大差异,征询“VP0呢?”形式趋于固定。深入分析这些格式是研究“VP0呢?”疑问句的重点。     

英语表量结构中的隐喻构建机制探究

文章以表量结构a+N1+of+N2中名量之间的隐喻相似性为基础,借用映射关系图示,考察英语表量结构中隐喻组合的构建机制。首先,基于施喻者认知加工的程度深浅,隐喻相似性分为两大类:客观相似性和心理相似性。其次,英语表量结构的隐喻式组合还蕴含动态与静态意象模式的区分,它影响了隐喻的建构方式--直接隐喻与间接隐喻。     

基于BOPPPS教学模型的数学实践课堂教学

BOPPPS教学模型强调师生互动,实现从已知到未知的自然过渡。数学实践是培养数学素养的有效方式。为了有效提高本科高校数学实践环节的课堂教学,本文以《数学实验》课程中的优化调度模型为例,结合作者的教学经验,讨论BOPPPS模型的有效课堂教学设计。