知识点结构图的构建及应用

首先分析了知识点结构图在计算机辅助教学中的作用。然后提出了知识点结构模型,给出知识点结构图的构建方法和存在形式。最后,通过实例描述了知识点结构图的使用方法。     

虚拟仿真实验技术在物理实验教学中的应用探讨

在物理实验教学中,传统的教学模式是教师单纯进行口头讲解,然后完成一些基本的实验,导致学生不能彻底掌握实验的过程,无法有效提升学生的思维能力和动手能力。文章主要探讨虚拟仿真实验技术在物理实验教学中的应用,指出虚拟仿真实验技术不仅能够提高物理实验教学质量,而且能够提高学生的自主探究能力。     

大师的风范 创新的团队——记北京理工大学毛二可院士及其创新团队

记述了中国工程院院士、北京理工大学教授毛二可带领团队在雷达技术研究领域勇于开拓新方向、放手培养年轻人的事迹,介绍了毛二可教授在教书育人、创新团队管理模式方面的做法及取得的成果。     

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…     

电视制作中涉及的存储技术

总结了电视制作目前涉及到的存储方式和存储技术.根据电视节目制作特点,对各种存储方式和技术进行了比较,并介绍了多级存储技术在媒体资产管理系统中的应用.     

Yimu San improves obstetric ability of pregnant mice by increasing serum oxytocin levels and connexin 43 expression in uterine smooth muscle

Prolonged farrowing remains one of the critical challenges in intensive pig farming. This study aims to explore the effects and mechanism of Yimu San (YMS), a Chinese veterinary medicine micro mist, on delivery ability with mouse models. Thirty-two pregnant mice were randomly divided into a control group and low-YMS, med-YMS, and high-YMS groups. The labor process time and stillbirth rate were recorded, the levels of serum oxytocin and prostaglandin E₂ (PGE₂) were measured with enzyme-linked immunosorbent assay (ELISA). Contractility measurements of the isolated uterus and the expression of connexin 43 (Cx43) in uterine smooth muscle were evaluated. The results showed that compared with the control group, the birth process time and stillbirth rate in the med-YMS and high-YMS groups were remarkably lower. The in vitro uterine contractions, levels of oxytocin, PGE₂, and Cx43 in the med-YMS and high-YMS groups were significantly higher than those in the control group. The differences of the above measurements between the low-YMS group and the control group were not obvious. It can be speculated that YMS could significantly promote labor in pregnant mice by enhancing the levels of oxytocin, Cx43, and PGE₂.     

全面实行研究生教育收费制度的政策分析：目标、限度与改进

全面实行研究生教育收费制度的基点是进一步提高研究生培养质量。政策的观念框架规定了政策的目的与范畴,而政策的实践模式受制于实施过程的复杂性、环境制约性、政策限度、不同教育制度相互干扰等从而影响政策效用的发挥。通过政策有效性的分析,了解政策偏差的影响因素及影响过程,在政策实施过程中修正消极影响,促进政策不断优化,提高政策的有效性。     

高等职业教育出路之探索

高校扩招既给高等职业教育的发展带来了机遇，也给高等职业教育带来了前所未有的影响和冲击，本文通过对普通高校与高等职业学校的对比，探讨了形成高职发展困境的原因和未来高等职业教育的出路。     

基于平衡记分卡法的绿色供应链绩效模糊评价模型

通过对绿色供应链内涵的分析,结合传统供应链绩效评价的指标体系和平衡记分卡法的四个维度,对绿色供应链绩效进行指标设计,运用模糊数学工具和层次分析法建立绿色供应链绩效评价模型,并进行量化处理。     

陕西省中等职业教育发展状况调查

本文通过对陕西省中职教育资源状况和对2005届陕西省初中毕业生报考意愿的抽样调查分析。认为根据教育部要求，陕西省中职扩招任务是可以完成的，但仍需克服相当大的困难。