中国图书馆学情报学期刊发展战略研究

以中国加入WTO和国家出版体制改革为社会背景,以国外图书馆学情报学期刊发展趋势为参照系,以我国图书馆学情报学期刊发展现状为出发点,以业内同行对图书馆学情报学期刊发展的代表性看法为直接参考,从发展目标、发展原则和发展机制等方面初步构架我国图书馆学情报学期刊今后5-10年的发展战略,以期引起国家有关部门的重视和业内同行的共同探讨。     

体育课程标准与体育教学改革

通过分析新体育课程标准产生的背景 ,比较新课程标准与旧体育《大纲》在指导思想、目标体系、学习领域、教学方式和评价方法方面的变化 ,进一步加深对新体育课程标准的认识及理解 ,促进学校体育教学改革的顺利进行     

Optimizing segmental movement in the jumping header in soccer

This study looks at segmental movements in the jumping header from an optimization viewpoint. Investigations on the header so far have focused on head restriction in the movement but have not clarified how and to what extent body segments influence the performance of the skill. In the present study a biomechanical model was used to analyze the jumping header in simulated competition to give a clear picture of an optimized header. Skilled soccer players headed balls at speeds of 13 m x s(-1) the results indicated that the head moves as a free non-restricted segment in the jumping header and should be allowed to do so, even though much soccer literature says otherwise to prevent injuries. The arm movement showed individual characteristics and gave no general advantages in optimizing ball speed after impact in the header The movement of the legs was, on the other hand, the single most important factor in the skill. Therefore, coaches and players shouldfocus on developing muscle strength in the stomach, back and pelvis and should put no restrictions on head and arm movement to optimize the jumping header.     

浅论邓小平对青少年成长的关怀

邓小平同志始终以博大的胸怀和深邃的目光,站在党和国家前途命运的高度,十分关怀青少年的成长。多次向青年发出号召要做“四有”新人,要学习,要参加社会实践,并鼓励大量派遣青少年出国留学,培养了大量的青年专家。     

MODELS OF EVALUATION AND THEIR RELATION TO STUDENT CHARACTERISTICS

The union and disjunction models for combining individual test marks to yield final grade distributions were outlined. It was expected that these models would differentially favor students according to their characteristic methods of learning and studying. The models were examined empirically in two educational psychology classes; five performance assessments were available, as well as eleven dimensions of study behavior and academic attitudes. While there was a substantial correlation between the distributions derived from the two models, they were found significantly to favor different student characteristics. The union model, relative to the disjunction model, favored students who were dependent, who interrelated different aspects of their course work, who scheduled their work and who rote-learned material. These differences were interpreted in terms of the educational assumptions underlying the two models. Some implications of the study for grading practice were suggested.