立足学科特点 培养创新意识

在数学教学中,如何培养学生的创新意识,笔者作了如下尝试： 一、铺垫前提——创设情景,让学生经历探索过程 创设情景,让学生亲自经历新知识发生、发展的探索过程,是培养学生创新意识的前提。     

MECHANICAL PROPERTIES OF CHLORINATED POLYPROPYLENE——POLYPYRROLE FILM

The chlorinated polypropylene (PPC1)-polypyrrole (PPy) conducting films were successfully synthesized by a novel method for the first time. The mechanical properties of PPC1-PPy conducting films were investigated by means of stress-strain test and DMA. It was shown that the rupture strength and initial modulus increase with the increase of polypyrrole content , but the elongation at rupture decrease. Besides, the glass transition temperature (Tg) is increasing to a plateau when polypyrrole content attains 6%. Moreover, a new mechanical model to describe the mechanical properties of PPC1-PPy blend system is established by changing the correction factor in Mooney model. It was found that the theoretic value of the model is well coincident with the experimental results.     

大学英语多媒体教学探讨

随着现代教育技术的广泛应用,多媒体教学作为现代化教学手段被普及使用.本文讨论了大学英语多媒体教学的优势和不足,通过对多媒体教学和传统教学的比较,指出在英语教学中二者结合的必要性。     

稀土发光聚己内酰胺非等温结晶动力学研究

采用等速降温的方法研究稀土发光PA6的非等温结晶动力学过程中发现，以Jeziorny法和Mo法处理该体系的非等温结晶过程比较理想，而在文中实验范围内，用Ozawa法处理则不太理想。用Jeziomy法分析结果表明：荧光粉质量分数为5％时，荧光粉对聚已内酰胺有明显的加速结晶作用。用Mo法分析结果表明：荧光粉的加入对聚己内酰胺有加速结晶的作用。     

影响旅游者选择旅游网站的因素研究

经过多年的发展,我国旅游网站建设已越来越成熟,与此同时,旅游者的需求也在不断变化.顺应旅游业发展的时代要求,本文从旅游者感知的角度出发,基于深度访谈和问卷调查,综合运用主成分分析法和模糊综合评价法,对影响旅游者选择旅游网站的因素以及各个因素的重要程度进行了分析.研究结果表明,影响旅游者选择旅游网站的各因素按照其重要性程度排序依次是网站"服务""产品""保障""口碑"和"性能",旅游者对"产品"重要性的评价低于"服务",各因素综合影响旅游者对旅游网站的选择.基于研究结果,本文为旅游网站的营销建设提出了建议.