论健身气功与和谐社会

文章运用文献资料及逻辑分析等研究方法,对和谐社会、健身气功的内涵,健身气功与和谐社会的关系进行了探讨。研究认为健身气功有利于人身心健康的和谐发展,有利于人与自然的和谐发展,有利于人与社会的和谐发展,对我国社会主义和谐社会的构建具有重要的现实意义。     

培养大学生英语口头交际能力的实验研究

大学生英语口头交际策略是其英语口头交际能力的重要组成部分。本文运用自然实验法,训练大学生英语口头交际策略以提高他们的口头交际能力。结果表明:①对大学生进行有意识运用口语交际策略的训练,能显著促进其口语能力的发展;②大学生的年级差异是影响口语交际策略训练效果的一个重要变量,专业和性别差异则对其没有显著影响。     

基于系统动力学的国内空调市场需求研究

利用系统动力学对影响国内空调市场需求的众多变量进行反馈动态性分析,并通过计算机仿真来量化分析空调市场需求变换的原因。通过量化研究各个变量对市场需求的影响,从而达到降低企业财务风险、提高企业的市场占有率和竞争能力、提高企业领导者的决策能力和提高企业决策的合理性和科学性的目的,同时为企业的决策提供了前瞻性和可行性很强的决策参考。     

公共空间人际传播对我国农村社会结构的影响分析

本文结合调查材料探讨公共空间人际传播对我国农村社会结构的影响,认为这些影响主要表现在相互交流信息、维系人情往来、整合民间力量、培育意见领袖和形成公共舆论等五个方面.     

美国Dryad 数据库共享政策及启示

国外开放数据库数据共享政策对国内数据库建设和运维具有一定借鉴意义,有利于促进国内数据共享的 发展。以Dryad数据库为例,从数据收集、数据发布、数据保存、收费和使用4个角度进行分析,采用对比分析法将 Dryad 与GenBank、Figshare进行比较,提出我国应制定细致、可操作的数据共享政策以及出台相关政策,加强期刊出 版商与数据库合作的相关数据共享政策建议。     

体育游戏促进团队凝聚力建设的作用及对策研究——从集体性运动项目视角出发

团队凝聚力是集体性运动项目取胜的重要因素,本文从阐述体育游戏的概念及特点出发,分析体育游戏对集体性运动项目的影响及体育游戏促进集体性运动项目团队凝聚力形成的作用,分析得出体育游戏对集体性运动项目团队凝聚力的形成至关重要,并提出运用体育游戏促进集体性运动项目团队凝聚力建设的几点对策,以期为体育团队在比赛中有效地完成任务,并提供相关理论依据。     

三维复Ginzburg-Landau方程双曲函数形式的精确解

使用了基于两种常微分方程的tanh-函数和扩展的tanh-函数法,构建了三维复Ginzburg-Landau方程的精确解.     

依法治校背景下的研究生管理

依法治校背景下的研究生管理,首先意味着管理者要守法,其次才是形成管理规范,实施管理。文中提出要及时规范研究生管理规章制度,在管理过程中要体现法治理念,包括法制规范与教育引导相结合, 正当程序与程序公正的实现,法不溯及既往,尊重既往判例与习惯等。     

理工科大学生阅读情况调查研究

用问卷调查和观察调查的办法,了解理工科大学生的阅读情况,包括学生读书的时间、种类、书源和对阅读价值的认识等。分析调查数据,提出问题和解决问题。     

Association between physical activity and digestive-system cancer: An updated systematic review and meta-analysis

BackgroundPhysical activity (PA) may have an impact on digestive-system cancer (DSC) by improving insulin sensitivity and anticancer immune function and by reducing the exposure of the digestive tract to carcinogens by stimulating gastrointestinal motility, thus reducing transit time. The current study aimed to determine the effect of PA on different types of DSC via a systematic review and meta-analysis.MethodsIn accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we searched for relevant studies in PubMed, Embase, Web of Science, Cochrane Library, and China National Knowledge Infrastructure. Using a random effects model, the relationship between PA and different types of DSC was analyzed.ResultsThe data used for meta-analysis were derived from 161 risk estimates in 47 studies involving 5,797,768 participants and 55,162 cases. We assessed the pooled associations between high vs. low PA levels and the risk of DSC (risk ratio (RR)  = 0.82, 95% confidence interval (95%CI): 0.79–0.85), colon cancer (RR = 0.81, 95%CI: 0.76–0.87), rectal cancer (RR = 0.88, 95%CI: 0.80–0.98), colorectal cancer (RR = 0.77, 95%CI: 0.69–0.85), gallbladder cancer (RR = 0.79, 95%CI: 0.64–0.98), gastric cancer (RR = 0.83, 95%CI: 0.76–0.91), liver cancer (RR = 0.73, 0.60–0.89), oropharyngeal cancer (RR = 0.79, 95%CI: 0.72–0.87), and pancreatic cancer (RR = 0.85, 95%CI: 0.78–0.93). The findings were comparable between case-control studies (RR = 0.73, 95%CI: 0.68–0.78) and prospective cohort studies (RR = 0.88, 95%CI: 0.80–0.91). The meta-analysis of 9 studies reporting low, moderate, and high PA levels, with 17 risk estimates, showed that compared to low PA, moderate PA may also reduce the risk of DSC (RR = 0.89, 95%CI: 0.80–1.00), while compared to moderate PA, high PA seemed to slightly increase the risk of DSC, although the results were not statistically significant (RR = 1.11, 95%CI: 0.94–1.32). In addition, limited evidence from 5 studies suggested that meeting the international PA guidelines might not significantly reduce the risk of DSC (RR = 0.96, 95%CI: 0.91–1.02).ConclusionCompared to previous research, this systematic review has provided more comprehensive information about the inverse relationship between PA and DSC risk. The updated evidence from the current meta-analysis indicates that a moderate-to-high PA level is a common protective factor that can significantly lower the overall risk of DSC. However, the reduction rate for specific cancers may vary. In addition, limited evidence suggests that meeting the international PA guidelines might not significantly reduce the risk of DSC. Thus, future studies must be conducted to determine the optimal dosage, frequency, intensity, and duration of PA required to reduce DSC risk effectively.