口语中“这个”的语义弱化及话语标记用法

本文试图从使用频率的角度来说明词语本身语义弱化的原因,通过口语语体和书面语体的统计对比,发现“这个”在口语语体中出现的频数远远高于书面语体,而话语标记正是其语义弱化的一个产物。在口语语体中,“这个”还有话语标记功能,即引发话轮和延展话轮。     

How Pupils Can be Helped to Develop Socially and Emotionally in Science Lessons

In this article, the authors argue that secondary school academic subjects should integrate elements of pastoral work into their teaching through the use of collaborative group work. Pupils who are given the opportunity to develop emotionally and socially are more likely to understand each other, which can lead to a reduction of conflict in the classroom. Social and emotional development can be facilitated in normal school lessons, such as science, through structured group work. The evidence shows that pupils do improve their communication and understanding of other pupils in the class, developing their emotional literacy. Further investigation indicates that benefits are sustained and that the class is more cohesive and mutually supportive.     

基于Rough集的信息约简方法

本文主要针对Rough集理论本身以及基于Rough集理论的信息表的约简方法进行研究。并在原有的Rough集理论关于信息表约简方法的基础上提出了一种新的信息表约简的方法-简单相异矩阵法。     

低氧运动与减体重

就低氧运动对体重的影响进行综述。研究表明:低氧运动可以通过抑制食欲,降低胃肠道的消化吸收功能来减少能量摄入、提高基础代谢率、提高有氧代谢酶的活性和影响激素分泌来促进代谢,抑制合成,从而达到减体重的目的;并指出减体重的机制、模式和有无副作用是有待研究与探讨的问题。     

磷钼杂多酸-聚吡咯薄膜修饰电极的研制及其电化学性能的研究

采用电化学方法首次在导电基体玻碳电极上研制出磷钼杂多酸－聚吡咯薄膜修饰电极，其制备过程简便、快速，膜电极性能稳定、经久耐用；对膜电极的电化学性能进行了表征；探讨了电解质溶液、溶剂、pH值、扫速等因素对膜修饰电极伏安行为的影响；研究了膜修饰电极对氨酸根、溴酸根、碘酸根、三价铁离子、亚硝酸根、过氧化氢等物质的电催化还原作用．     

单扫描导数示波极谱法测定地塞米松

提出了测定地塞米松的单扫描二阶导数示波极谱法,在0.10 mol/L HAc-0.10 mol/LNaAc(pH4.7)的缓冲溶液中,地塞米松于-1.14 V处产生一极谱还原波,二阶导数峰电流与其浓度在4.8×10-7~6.0×10-6mol/L范围内有良好的线性关系(r=0.9993,n=8),检测限为1.0×10-7mol/L,应用该方法测定了注射液中地塞米松磷酸钠的含量,结果令人满意.     

骶尾部损伤治疗方法之我见

骶尾部挫伤是一种常见多发性损伤。目前所采用的治疗方法多不尽人意。作者经多年临床实践，总结出采用手法复位，配合胶布牵拉固定，并适当给予中药内服和外用，收到了疗政高、疗程短的效果，是当前较为理想的治疗方法之一。     

碳氮双键的极谱研究概论

本文从碳氮双键的还原过程、腙的异构和希夫碱的还原三个方面概述了碳氮双键的极谱研究现状 .     

Using Multidimensional Item Response Theory to Evaluate Educational and Psychological Tests

Many educational and psychological tests are inherently multidimensional, meaning these tests measure two or more dimensions or constructs. The purpose of this module is to illustrate how test practitioners and researchers can apply multidimensional item response theory (MIRT) to understand better what their tests are measuring, how accurately the different composites of ability are being assessed, and how this information can be cycled back into the test development process. Procedures for conducting MIRT analyses–from obtaining evidence that the test is multidimensional, to modeling the test as multidimensional, to illustrating the properties of multidimensional items graphically-are described from both a theoretical and a substantive basis. This module also illustrates these procedures using data from a ninth-grade mathematics achievement test. It concludes with a discussion of future directions in MIRT research.     

速滑服风致减阻效能评价方法

针对速滑服风致减阻效能的优劣,分析了身着速滑服运动员模型风致阻力的组成,提出了分别基于风洞试验以及材料表面微观几何特征观测的速滑服减阻效能评价方法,并进行速滑服的减阻效能评价试验。试验表明,具有较低的材料表面轮廓算数平均偏差值的速滑服减阻效能优异,试验也相互验证了两种比赛服减阻效能评价方法的可靠性。