文化传播视角下对全球体育交往的理性审视

基于文化传播的视角,以文化传播的特征为出发点,透过体育交往在世界文化交流与传播过程的作用分析其存在的地域性与文化性差异,然后从文化符号创新、文化身份认同以及交往方式理性这3个不同文化传播视角对体育交往现象进行解读,对有关体育交往的理论逻辑进行了详细的理论剖析,以期为中国体育文化的传播提供可能的理论参考和依据.     

Effect of substrates and underlayer on CNT synthesis by plasma enhanced CVD

Due to their unique thermal, electronic and mechanical properties, carbon nanotubes （CNTs） have aroused various attentions of many researchers. Among all the techniques to fabricate CNTs, plasma enhanced chemical vapor deposition （PECVD） has been extensively developed as one growth technique to produce verticallyaligned car bon nanotubes （VACNTs）. Though CNTs show a trend to be integrated into nanoelectromechanical system （NEMS）, CNT growth still remains a mysterious technology. This paper attempts to reveal the effects of substrates and un derlayers to CNT synthesis. We tried five different substrates by substituting intrinsic Si with high resistivity ones and byincreasing the thickness of SiO2 insulativity layer. And also, we demonstrated an innovative way of adjusting CNT den sity by changing the thickness of Cu underlayer.     

我国附赠式有奖销售行为的法律问题研究

随着市场经济的发展,越来越多的商品和服务涌入市场。为了在市场上占有一席地位,各商家之间的竞争也日益激烈,竞争手段和方式也日趋多样化。而附赠式有奖销售因为其成本低、效果明显等特点被商家作为一种常用的促销方式。但是,由于我国对附赠式有奖销售的规制不完善,导致附赠式有奖销售经常带有不正当竞争的性质。在对附赠式有奖销售基本理论阐述的基础上,就附赠式有奖销售的现存问题进行分析,并提出完善我国附赠式有奖销售的建议,以求附赠式有奖销售在市场上发挥它的积极作用。     

高职建筑类专业现代学徒制研究

“学徒制”在我国有着悠久的历史,作为一种言传身教的形式,在一定时期内为我国的经济和社会发展作出重大贡献.“现代学徒制”是相对于“传统学徒制”提出的, “现代学徒制”使高职类建筑专业从单纯的学校培养人才,扩展到与社会、企业、技工师傅结合培养复合型人才为主的培养模式,使单纯培养技术工人的“学徒制”,发展为培养理论联系实际的技术技能型人才的“现代学徒制”.从分析现代学徒制入手,总结高职类建筑专业与现代学徒制契合点,为教育改革、人才培养等方面提供依据及借鉴.     

A microfluidic chip for direct and rapid trapping of white blood cells from whole blood

Blood analysis plays a major role in medical and science applications and white blood cells (WBCs) are an important target of analysis. We proposed an integrated microfluidic chip for direct and rapid trapping WBCs from whole blood. The microfluidic chip consists of two basic functional units: a winding channel to mix and arrays of two-layer trapping structures to trap WBCs. Red blood cells (RBCs) were eliminated through moving the winding channel and then WBCs were trapped by the arrays of trapping structures. We fabricated the PDMS (polydimethylsiloxane) chip using soft lithography and determined the critical flow velocities of tartrazine and brilliant blue water mixing and whole blood and red blood cell lysis buffer mixing in the winding channel. They are 0.25 μl/min and 0.05 μl/min, respectively. The critical flow velocity of the whole blood and red blood cell lysis buffer is lower due to larger volume of the RBCs and higher kinematic viscosity of the whole blood. The time taken for complete lysis of whole blood was about 85 s under the flow velocity 0.05 μl/min. The RBCs were lysed completely by mixing and the WBCs were trapped by the trapping structures. The chip trapped about 2.0 × 10³ from 3.3 × 10³ WBCs.     

Dropping out: Why are students leaving junior high in China's poor rural areas?

Despite requirements of and support for universal education up to grade 9, there are concerning reports that poor rural areas in China suffer from high and maybe even rising dropout rates. Although aggregated statistics from the Ministry of Education show almost universal compliance with the 9-year compulsory education law, there have been few independent, survey-based studies regarding dropout rates in China. Between 2009 and 2010 we surveyed over 7800 grade 7, 8, and 9 students from 46 randomly selected junior high schools in four counties in two provinces in North and Northwest China to measure the dropout rate. We also used the survey data to examine factors correlated with dropping out, such as the opportunity cost of going to school, household poverty, and poor academic performance. According to the study's findings, drop out rates between grade 7 and grade 8 reached 5.7% and dropout rates between grade 8 and grade 9 reached 9.0%. In sum, among the total number of students attending junior high school during the first month of the first term of grade 7, 14.2% had left school by the first month of grade 9. Dropout rates were even higher for students that were older, from poorer families (and families in which the parents were not healthy), or were performing more poorly academically. We conclude that although the government's policy of reducing tuition and fees for junior high students may be necessary, it is not sufficient to solve the dropout problem.     

Integrating different tracking systems in football: multiple camera semi-automatic system,local position measurement and GPS technologies

Abstract

During the past decade substantial development of computer-aided tracking technology has occurred. Therefore, we aimed to provide calibration equations to allow the interchangeability of different tracking technologies used in soccer. Eighty-two highly trained soccer players (U14–U17) were monitored during training and one match. Player activity was collected simultaneously with a semi-automatic multiple-camera (Prozone), local position measurement (LPM) technology (Inmotio) and two global positioning systems (GPSports and VX). Data were analysed with respect to three different field dimensions (small, <30 m² to full-pitch, match). Variables provided by the systems were compared, and calibration equations (linear regression models) between each system were calculated for each field dimension. Most metrics differed between the 4 systems with the magnitude of the differences dependant on both pitch size and the variable of interest. Trivial-to-small between-system differences in total distance were noted. However, high-intensity running distance (>14.4 km · h^?1) was slightly-to-moderately greater when tracked with Prozone, and accelerations, small-to-very largely greater with LPM. For most of the equations, the typical error of the estimate was of a moderate magnitude. Interchangeability of the different tracking systems is possible with the provided equations, but care is required given their moderate typical error of the estimate.     

玻璃容器造型设计的未来趋势研究

玻璃容器作为一种既古老又年轻的包装容器已有几千年的历史了,迄今仍占领包装材料的楚翘位置。古埃及人利用天然玻璃制造容器,造型简单,工艺落后,现代社会的进步,工业发达,人们审美追求不断提高,对玻璃容器造型又有了新的要求。     

自尊的心理机制——进化心理学的视角

自尊作为人类千百年来为解决各种生存和发展问题而形成和进化的适应器,是表征机制、监控机制、更新机制、评价机制、激励机制和行为输出机制的集合体,其适应功能体现在社会地位、择偶等问题上。目前有关自尊进化机制的研究正在逐渐形成一个完整的理论体系,研究者从自尊的进化起源、自尊机制的心理成分与社会适应功能方面展开了大量研究,但在自尊进化机制领域的实证研究尚显不足。因此,未来的研究应从进化心理学视角开展自尊心理机制的实证研究,以期进一步完善自尊进化机制的理论体系。