Mathematica在理论力学教学中的可视化作用

用Mathematica软件对理论力学中有心力场中运动和一维阻尼强迫振动二个实例进行编程操作,获得物体运动变化相关的图形,说明Mathematica可以将物理过程形象展现出来,对理论力学教学中的复杂物理内容可视化具有很好效果。     

论体育课程新课标下健身功能的正反馈

传统的体育教学大纲是以学科体系为中心,表述本学科的知识点与技能要求,而体育课必须面向全体学生,把健康教育落到实处.体育新课标应以健身为目标,选择激发和保护学生体育兴趣的教学内容,采用开放的教学模式,以促进体育课程健身功能的正反馈.     

论张竹坡批点《金瓶梅》之"时文手眼"

明清两代，所谓的“时文”，即作为科举考试专用文体的八股文，对当时的文学创作和批评都产生了深远影响。张竹坡批点《金瓶梅》亦深受时文影响，主要表现在借用批评术语和借鉴文法理论两个方面。     

Memory training program for older adults

ABSTRACT

Objective: Memory loss affects a large proportion of older adults. Research indicates a positive association between memory training and better memory performance as people age. However, studies on specific memory training using an experimental design are limited. This study explored whether memory training has improved memory performance in a group of older adults.

Method: A convenience sample of 48 participants was recruited from two communities. Disregarding dropouts, this left 23 experimental (mean age = 65.4 ± 6.0, range = 56–80) and 19 control participants (mean age = 64.5 ± 4.9, range: 57–72). The intervention consisted of 60-min classes held on a weekly basis continuing for 8 weeks. The class session was held after a 1-h exercise class and before a 1-h session of cognitive games. The pre–post objective memory performances, including associative, list, text, place, grocery learning, and transfer-effect of daily event memory (ecology validity), were examined to determine whether the intervention was effective.

Results: Intragroup: With Wilcoxon test, the findings showed that the intervention of both the list and place learning had significant differences for the experimental group, but not for the control group. Intergroup: The main effects were found for the associative and text learning. The mixed design ANOVA indicated that there is an interaction (time x group) on the dependent variable of the place learning test. Daily events memory: We found within group that the pre–post differences were significant for the experimental group but not for the control group.

Conclusion: The study showed that memory training can help older adults to ameliorate memory loss problems and these findings deserve more attention.     

企业的内涵增长率和可持续增长率

介绍了内涵增长率和可持续增长率的含义，通过实例数据对比验证了在内涵增长率、可持续增长率和某种实际增长率情况下销售增长对企业资本结构和长期发展的影响。得出结论企业必须选择适当的发展速度，可持续增长率是企业发展速度的参照。     

延缓生长法在试管内保存牛皮杜鹃种质初探

以牛皮杜鹃嫩茎基部直接再生形成的丛生芽团为试材,应用均匀设计法探讨了影响牛皮杜鹃丛生芽团试管保存的主要因子和水平,同时筛选最适于牛皮杜鹃丛生芽团试管保存的培养基,结果表明:最适宜的丛生芽团试管保存培养基为:DR+根皮苷2.70 mg/L+KT0.70 mg/L,保存46个月生长率仅为1.12%.对保存前后的芽苗分化的结...     

Chinese number‐naming advantages? Analyses of Chinese pre‐schoolers' computational strategies and errors

Simplicity in number naming in a language (e.g. ‘ten‐two’ in Chinese is simpler than the irregular ‘twelve’ in English) has been used to explain cross‐cultural disparities in children's computational competence. In contrast to previous research focusing only on whether children can provide the correct answers, in this study (N?=?117 and 92) we examined Chinese pre‐schoolers' computational strategies in depth and individually so as to examine their understanding of the base‐10 system and place value. The results showed that despite the fact that many can give the correct answers, there is strong evidence that Chinese pre‐schoolers do not have adequate understanding of the base‐10 number system and place value, suggesting that the advantages of the simpler number‐naming system are limited.     

临沂市学校园足球发展现状调查研究

本文以临沂市中学研究为对象,采用文献资料、访谈、问卷调查等研究方法,从临沂市中学足球开展现状入手,进行调查和分析,得出中小学足球课的时数较少、教学形式随意性大、学习压力大、训练经费不足、比赛交流机会少、竞赛体系不完善,足球师资专业阅历不足等,是制约临沂市中小学足球运动良好开展的重要原因.     

我国促进企业科技人才发展的政策及挑战

对企业科技人才培养的意义、现状、相关政策、主要问题进行分析阐述,并提出政策建议。促进企业科技人 才发展是提高我国自主创新能力、建设创新型国家的关键。近年来,尽管政府采取了多项政策措施,支持引导企业加强 创新活动和人才培养,但企业依然是我国科技人才队伍建设的薄弱环节,对科技创新人才缺乏足够吸引力。因此应确定 企业科技人才优先发展的原则,国家人才政策和计划向企业倾斜,加大投入,深入推进相关改革,促进人才向企业流动。