基于正则表达式的大规模网页术语对抽取研究

多语术语对的收集对于垮语言信息检索、机器翻译和语言学习等具有重要应用价值.但传统的手工方式或基于平行语料的术语收集方法均有各自的局限性.针对web上存在的大规模术语网页,基于Web挖掘技术,提出了一种采用正则表达式的术语对抽取方法.首先是获取网页源文件,接着依据已定义的正则表达式从中抽取出正确的术语对,并存储到本地术语库中.实验结果表明,该方法可实现66.7%的术语网页的抽取,并且对于可抽取网页,抽取出的术语对准确率接近100%.     

高校德育视野下的校史校情教育

校史校情是高校德育工作中的宝贵资源和精神财富,有着与其他资源不同的显著特征,以其为内容的教育在培养、塑造大学生思想品德过程中具有长期性、稳固性的功能优势;校史校情教育注重从现实入手,从身边事入手,夯实了高校德育工作的基础;强化校史校情教育的实效性是当前高校德育工作的重要任务.     

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。     

热带植物花卉的抗氧化性研究

为了筛选具有抗氧化性的热带花卉，对海南师范大学校园中的12种花卉的鲜花和干花的水提取物、50％乙醇提取物和70％丙酮提取物进行清除DPPH的实验．结果表明：紫薇、干凤凰花、干洋金凤、大叶龙船花卉和干小叶龙船花卉的抗氧化效果最好．     

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.     

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.     

User acceptance of intergovernmental services: An example of electronic document management system

The traditional focus of intergovernmental services research has been on technological development, not on user acceptance; yet user acceptance of intergovernmental services in each electronic government (e-Government) implementation affects the ultimate success of the e-Government project. In the e-Government implementation context, many governments have invested huge amounts of money and manpower to make intergovernmental services both available and user-accepted, although some individuals have no intention of using them. The electronic document management system (EDMS) is the most popular intergovernmental service in the e-Government project. Thus, e-Government researchers need to identify the factors that determine user acceptance of EDMS.     

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.     

Prevalence and correlates of meeting the muscle-strengthening exercise recommendations among Chinese children and adolescents: Results from 2019 Physical Activity and Fitness in China—The Youth Study

PurposeThis study aimed to describe the national prevalence of Chinese children and adolescents who met the World Health Organization muscle-strengthening exercise (MSE) recommendations and identify correlates of meeting the MSE recommendations.MethodsCross-sectional data from the 2019 Physical Activity and Fitness in China—The Youth Study, a nationally representative sample of Chinese children and adolescents (n = 80,413; mean age = 13.7 years; 53.9% girls) and their parents, were analyzed. Children and adolescents who reported engaging ≥3 days (up to 7 days) of MSE per week were classified as meeting the MSE recommendations. MSE, demographics, lifestyle behaviors (sport participation, moderate-to-vigorous physical activity, screen time, and sleep duration), exercise intention, peer and parental support, and parental MSE participation were assessed through self-reports. Logistic regression models were used to determine the correlates of meeting the MSE recommendations. The analyses were completed in 2020.ResultsOverall, 39.3% of children and adolescents met the MSE recommendations. Girls, 10th–12th graders, minorities, those from lower income households and those from families with lower parental education were less likely to meet the MSE recommendations. Children and adolescents who were proficient in ≥2 sports were more likely to meet the MSE recommendations (adjusted odds ratio (aOR) = 1.44, 95% confidence interval (95%CI): 1.26–1.65), as were those with more moderate-to-vigorous physical activity (aOR = 1.57, 95%CI: 1.53–1.61). Additionally, children and adolescents with high exercise intention (aOR = 1.60, 95%CI: 1.51–1.69), those whose parents met the adult MSE recommendations (aOR = 1.46, 95%CI: 1.40–1.52), and those who received high peer (aOR = 1.27, 95%CI: 1.20–1.34) and parental support (aOR = 1.07, 95%CI: 1.04–1.12) were more likely to meet the MSE recommendations.ConclusionLess than two-fifths of Chinese children and adolescents met the World Health Organization MSE recommendations. The correlates identified in our study can help inform the development of school and community based strategies and policies to enhance participation in MSE and improve muscular fitness of all Chinese children and adolescents.     

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。