浅议实验楼的电气设计

实验楼内有各种不同设备，为保证各种设备运行的可靠性、稳定性及安全性，避免相互之间的干扰，必须找出一种合适的电气设计方案。本文通过对实验楼供配电线路及接地系统两方面特点的论述及对不同供电方案的比较。阐明了在电气设计过程中应注意的问题，以期找出一种较理想的电气设计方案。     

喷枪最优轨迹规划数学模型的建立

喷枪最优轨迹规划问题的目的是要确定一条使得工件表面涂层厚度差异达到最小的喷枪最优轨迹，本文对于由此建立的具体数学模型进行了详细阐述。     

语篇教学

从某种程度上说，语言教学其实就是语篇教学。在语义系统网络所提供的意义潜势与语类图武结构形成的结构潜势的相互作用下我们就能够生成恰当的言语。语篇教学在很大程度上就是培养学习者根据语类结构潜势选择得体的语言来表达功能意义的能力。     

The learning potential of online student-constructed tests with citing peer-generated questions

In view of contribution-based pedagogy and observational learning theory, students’ perceived uses, preferences, usage, and selection considerations with regard to citing peers’ work were examined in an online learning environment targeting student-constructed tests. Data were collected from 84 fifth-grade students who participated in online student-constructed tests with and without citing in an 11-week study. Quantitative and qualitative data in response to an end-of-session questionnaire and actual online citing behaviour were analyzed. Several major findings were obtained. First, significantly more participants supported and preferred “citing” over “no citing” for online student-constructed tests. Second, data with regard to perceived uses, preferences, and reported usage all supported the potential of citing for providing an observational learning space. Third, citing allowed the participants to attend to areas pinpointed by their peers but initially ignored by them, thus making social construction of knowledge possible. Fourth, the quality and the author of the item are the two determining factors affecting citing decisions. Fifth, a statistically significant positive correlation between students’ academic achievement and their generated questions cited by peers was confirmed. Finally, actual online citing behaviour varied greatly among participants, with the majority using the citing function during online test-construction to various extents.     

试论我国农村劳动力的转移机制

本文以黑龙港地区为例,深入探讨了我国农村剩余劳动力转移过程中的作用力机制,提出了目前制约我国农村劳动力转移的基本三要素,从而以此将劳动力的转移过程划分为积极型与消极型两种类型,并明确指出:积极型转移应是当今我国农村劳动力转移的基本模式.     

校园文化建设视角下女大学生婚恋观的形成与引导——对"干得好不如嫁得好"的剖析

随着社会多元化,女大学生的婚恋观也逐渐多元化,文章从女性学角度对部分女大学生认可的“干得好不如嫁得好”的观念进行剖析,分析这种观念形成的原因,并立足于校园,探索一些可行性路径,引导女生正确处理干得好与嫁得好的关系。     

电化学法合成L-磺基丙氨酸的机理研究

以L 胱氨酸和氢溴酸为原料 ,采用间接电氧化法合成L 磺基丙氨酸的循环伏安行为 ,研究表明 ,阳极发生典型的EC催化过程 ,电极反应和后续化学反应互相促进 ,反应速度快 ,电流效率高。交流阻抗法和电势阶跃法测得电极反应和后续化学反应速率常数分别为 6 11× 10 -4s-1和 0 80s-1。     

多孔超弹性矩形板中微孔的增长

The analyses of finite deformation and stress for a hyperelastic rectangular plate with some voids under an uniaxial extension were conducted. The governing differential equations were given from the incompressibility condition of the material. The solution was approximately obtained from the minimum potential energy principle. The growth of voids was discussed. One can see that an initial central circular-cylinder void becomes an elliptic-cylinder void, but an initial non-centeral circular-cylinder void becomes an elliptic-like cylinder void and the center of void has a shift. The stress distributions along the edges of voids were given and the phenomenon of stress concentration was observed. The influences of the distribution manner and size of voids, as well as the distance between them on the growth of voids were analyzed.     

非参数项目反应理论模型及其在教育考试中的应用

非参数项目反应理论模型包括单调均匀性模型和双单调模型。用单调均匀性模型对某英语听力考试结果研究发现,按照顺序选择法,可从16道听力试题中选出11道满足要求的试题,组成单维量表。用考生在这11道试题上的总得分对考生进行排序与按照潜质排序等效。利用双单调模型对11道听力试题组成的单维量表进行试题功能偏差研究发现,有5道试题在女生子群体中的排序与在男生子群体以及整个群体排序不同,显示女生子群体作出正确应答的概率明显高于男生子群体作出正确应答的概率。这种差异至少部分是由两个子群体听力能力上的差异引起的。     

论董仲舒的教师观

在教师施教方面,董仲舒重视言传身教,主张适时、适度、适量教学,并且采用次第相传的教学方式。在教师治学方面,董仲舒强调强勉努力、专心致志和多连博贯。在教师修身方面,董仲舒认为应该通过扬善抑恶、仁智结合和积渐聚微等方法提高教师思想道德水平。