对影响广西城市体育中考因素的调研分析

在运用文献资料法、问卷调查法、数理统计法等多种调研方法,对广西几个主要城市体育中考情况分析的基础上,发现影响城市体育中考的因素较多,其中决策部门的重视程度与评分标准的设定分析占据重要位置。由此而知,加强学校决策部门对体育中考的重视、完善体育中考评分标准是当前加强与完善体育中考工作的重要举措。     

浅析“人肉搜索”的实质、利弊及引导策略

＂人肉搜索＂在当前已成为热门的社会话题,从一种单纯的网络文化现象逐渐到对现实社会生活产生越来越大的影响。鉴于人们对于＂人肉搜索＂的实质存在诸多误解,文章将对其相关的一些概念、内容进行厘定,分析此现象的利弊并提出可能的规范和引导措施。     

基于责任事件的责任教育概念分析及价值

责任教育是人文教育和道德教育最核心的内容,也是教育研究中最重要的领域。分析开展责任教育的价值可以揭示责任行为形成的机理,这种机理以存在决定意识为根本原理,以责任事件为依据,以责任行为为目标,突破了在责任教育设计上机械地坚持知情意行而无法设计实施方案的现状,有着极为现实的教育意义。     

Resistance partial factor and reliability of cast ball-and-socket support joint

Considering the uncertainty of material performance, geometric characteristic and analysis method, the analysis of statistical parameters of the resistance of cast ball-and-socket support joints and the reliability analysis are carried out by JC method (improved first-order second-moment method) based on the relevant experimental data. Results show that the resistance partial factor of the joint increases with the increase of the reliability index. The resistance partial factors are suggested corresponding to the reliability index under different load combinations. Moreover, the suggested resistance partial factor is adopted in reliability design, and it is found that the reliability index of the joint is larger than the target reliability index. The optimal load combination is the one in which live load plays an important control role. Finally, based on the suggested resistance partial factors, the reliability analysis of cast ball-and-socket support joints of a project is conducted.     

Scratching and Turning Experiments on Machinability of Optical Glass SF6 in Diamond Cutting Process

To improve the machinability of optical glass and achieve optical parts with satisfied surface quality and dimensional accuracy, scratching experiments with increasing cutting depth were conducted on glass SF6 to evaluate the influence of cutting fluid properties on the machinability of glass. The sodium carbonate solution of 10.5% concentration was chosen as cutting fluid. Then the critical depths in scratching experiments with and without cutting fluid were examined. Based on this, turning experiments were carried out, and the surface quality of SF6 was assessed. Compared with the process of dry cutting, the main indexes of surface roughness decrease by over 70% totally. Experimental results indicated that the machinability of glass SF6 can be improved by using the sodium carbonate solution as cutting fluid.     

缪斯殿外 别有新天——王兆鹏先生的学科交叉跨界研究管窥

王兆鹏教授之治学,既拥唐门考据之长,注重文献学硬功夫,故能成其深,又不囿于学科限制,注重学科交叉新思考,故能成其大。他在文献考据、理论阐释方面皆颇有建树,备受瞩目。王兆鹏在理论阐释研究中的学科交叉、文学跨界研究是其治学之特色,其定量分析、传播接受、范式批评等研究成就尤其突出。     

Dynamic Stability Analysis of Cages in High-Speed Oil-Lubricated Angular Contact Ball Bearings

To investigate the cage stability of high-speed oil-lubricated angular contact ball bearings, a dynamic model of cages is developed on the basis of Gupta’s and Meeks’ work. The model can simulate the cage motion under oil lubrication with all six degrees of freedom. Particularly, the model introduces oil-film damping and hysteresis damping, and deals with the collision contact as imperfect elastic contact. In addition, the effects of inner ring rotational speed, the ratio of pocket clearance to guiding clearance and applied load on the cage stability are investigated by simulating the cage motion with the model. The results can provide a theoretical basis for the design of ball bearing parameters.     

2000-2010年国内期刊中的客家研究论文分析

新世纪以来,随着客家研究理论和方法的创新,客家研究取得了巨大的发展。期刊论文是科研成果的主要呈现方式之一,通过论文年度发表数量、论文的期刊分布、作者分布、作者单位分布、高频关键词、文献被引次数6个方面对2000-2010年客家研究论文进行分析,可以了解目前客家研究的状况:总体发展势头良好、建立了较好的科研成果发表平台、拥有了一批高素质学者队伍、形成了一些较好的学术团队、研究内容丰富、科研成果学术价值还需进一步提升。     

冲击式谷物流量传感器应变特性的有限元分析

冲击式谷物流量传感器采用冲击板感受联合收割机出粮口谷物的冲击,并将冲击力集中到一个双孔平行梁弹性体上,通过测量弹性体的应变来测量谷物的冲击力,并换算成谷物流量.但是不同的冲击位置产生的扭矩和弯矩是不同的,扭矩变化会导致弹性体发生不同程度的扭转,弯矩变化会导致弹性体应变差异.为此,采用有限元方法分析了不同扭矩和弯矩对传感器的弹性体应变影响的规律.分析结果表明,扭矩变化时弹性体发生扭转对弹性体中心线正负3mm处的应变与扭转无关;弯矩变化对四个测试点的应变是互补的,惠斯登电桥的输出电压与力的大小成线性关系,与力的作用点无关.载荷试验结果与有限元分析的结果一致.     

功能语篇分析在大学英语教学中的应用

韩礼德(Halliday)的系统功能语法为语篇分析提供了一个理论框架,具有可操作性强、实用性强的特点,是一种比其它理论更适合于语篇分析的理论。将韩礼德系统功能语言学理论应用于大学英语教学中,可以使学生理解句法、词汇选择的深层原因,深刻领会作者的写作意图,根据语境在"意义潜势"中选择适合语境的语言。通过教学实例得出从篇章的体裁、主题和结构入手来分析全文能有效帮助学生理清文章脉络,把握文章中心,有助于提高学生分析篇章的综合能力。由此也表明功能语篇分析对语言教学尤其是大学英语教学很具指导意义。