高校学生视力状况剖析

通过对电子科技大学的１９９０、１９９１年两届大学毕业生视力状况的分析，指出了采取有效措施保护学生视力的必要性。     

邻羧基苯甲酰二茂铁四乙酰葡萄糖基酯的合成及其抗贫血活性研究

合成了邻羧基苯甲酰二茂铁及其四乙酰葡萄糖基酯，试验了它们对失血性贫血小鼠的抗贫血活性．结果表明．它们都具有良好的抗贫血活性．但糖酯的作用效果较原料羧酸弱．     

论中国传统文化中的“术”

中国传统文化十分讲究“术”。“术”,既有可继承的“精华”,也有必须批判的“糟粕”。在现代化建设的今天,可以从不同的角度运用我国传统文化中的“术”,使之为现代化建设服务。     

读出言外之意 提高理解层次

以心理语言学的基本观点和理论为依据分析阅读理解心理过程,在阅读教学实践中论证这种心理模式。     

波动方程的任意阶精度的十字架格式

构造了解波动方程的任意阶精度的十字架格式，这些格式的精度为Ｏ（Δｔ￣（２ｐ）＋Δｘ￣（２ｑ））。讨论了这些格式的稳定性与时间方向精度的关系，证明了格式的稳定性区域不再随ｐ的增大而扩大，建立了具有任意阶精度显式十字架格式的稳定性区域的上界。     

热边界层相似性解条件及其相似性解方程

边界层是相似的,其含义就是对不同断面的速度或焓分布,都可以通过调整坐标的尺度因子,使它们重合在一起。一般说来,寻求相似性变量以及把相应的边界层偏微分方程转化为常微分方程的方法均不是唯一的。本文拟对层流流动边界层和热边界层叙述一种通用性较好又比较简洁的方法。     

长江经济带商贸流通业区域差异实证分析

通过构建长江经济带商贸流通发展综合评价指标体系,运用主成分分析法对长江经济带商贸流通区域差异进行评价对.研究表明:长江经济带各省市商贸流通区域差异较大,应建立长江经济带商贸流通发展的战略协调机制、利益协调机制、空间协调机制,制定协调发展的对策措施,促进长江经济带商贸流通协调发展.     

Endogenous fertility and human capital in a Schumpeterian growth model

This study develops a scale-invariant Schumpeterian growth model with endogenous fertility and human capital accumulation. The model features two engines of long-run economic growth: R&D-based innovation and human capital accumulation. One novelty of this study is endogenous fertility, which negatively affects the growth rate of human capital. Given this growth-theoretic framework, we characterize the dynamics of the model and derive comparative statics of the equilibrium growth rates with respect to structural parameters. As for policy implications, we analyze how patent policy affects economic growth through technological progress, human capital accumulation, and endogenous fertility. In summary, we find that strengthening patent protection has (a) a positive effect on technological progress, (b) a negative effect on human capital accumulation through a higher rate of fertility, and (c) an ambiguous overall effect on economic growth.     

Critical review and comparison of continuity correction methods: The normal approximation to the binomial distribution

We provide a comprehensive and critical review of Yates’ continuity correction for the normal approximation to the binomial distribution, in particular emphasizing its poor ability to approximate extreme tail probabilities. As an alternative method, we also review Cressie's finely tuned continuity correction. In addition, we demonstrate how Yates’ continuity correction is used to improve the coverage probability of binomial confidence limits, and propose new confidence limits by applying Cressie's continuity correction. These continuity correction methods are numerically compared and illustrated by data examples arising from industry and medicine.     

海外中国公民的安全形势分析

中国公民在海外面临的各种安全威胁,除了媒体报道比较多的袭击绑架和抢劫伤害外,还包括海盗袭击、自然灾害、意外事故等导致的严重人身安全威胁;主要由社会骚动、排外哄抢、商业竞争、劳务纠纷;居住国的外侨行政与经济措施导致的重大财产损失;中国公民在诸如旅游受辱、行政刁难、校园歧视等事件中遭受的严重心理伤害等各种情况。应针对不同的安全威胁及其导因采取相应的对策。