2+1维破切孤子方程的分支和行波解(英文)

运用动力系统原理研究2+1维破切孤子方程的行波解,得到了参数空间不同区域上所有可能的精确解.     

任意方向的原子轨函

用旋转变换得到了任意方向上,由(n,l,m,m_s)四个量子数标记的原子轨函。     

非线性轨道微分方程的解析求解

利用待定函数法研究了非线性轨道微分方程的解析解,求出了一类情形下的四类解析解。     

拓扑空间分离集的性质

本文给出拓扑空间的分离集的若干性质。     

湘西苗族百狮会嬗变轨迹及启示

文章采用历史文献资料、专家访问、村落调查、逻辑分析相结合等研究方法,对湘西苗族＂百狮会＂的社会变迁进行研究,分析其嬗变的原因,得出其发展的内在规律,从而为中国民族文化发展提供理论依据,为世界民族文化现代化提供参考。     

任务性质、结果反馈时机与运动技能的学习

采用键盘敲击任务探讨任务性质、结果反馈时机对运动技能学习的影响.将100名右优势手大学生随机分为开放性和封闭性任务组(男女各25名),两组分别在5种KR条件下,练习开放或封闭任务3天,每天练习108次.第3天练习结束后休息10min,进行不提供KR的保持测试10次.24 h后,进行无KR保持测试10次.结果显示:(1)在封闭性运动技能学习中延迟KR更有利,而即刻KR促进开放性运动技能的学习;(2)提供KR的适宜时机受任务性质影响.与开放性技能相比,操作封闭性技能时,提供KR的适宜时机应延迟.     

关于逆、顺三角形有向面积的一个定理及其推论

给出平面三角形有向面积的一个定理及其若干推论.推广拿破仑三角形的一些已知结论.     

Hungarian-Russian bilingual schools in Hungary during the Soviet occupation (1945–1989)

Through the example of the establishment, functioning, and closing of bilingual schools during the Soviet occupation of Hungary, this paper aims to introduce this segment of public education in Central-Eastern Europe. In the period between 1945 and 1989, the learning of Russian as a compulsory subject was introduced, teaching other languages was restricted, and Hungarian-Russian bilingual schools were launched. The features of their establishment can be connected to political and professional power relations in different sub-periods within the structures of closed language policy. The objective in both states was the education of committed political elite. The first school was established by direct political control and closed because of the 1956 revolution. The second school was established in 1974, through professional and political compromises. The third school opened at the end of the period, as part of a top-down development project involving 14 schools. A number of European target languages (still including Russian) were introduced, which can be regarded as the opening up of language education policy. Relying on sources, documents, and personal recollections, the study aims to reveal the dynamics of the interrelations between controlled language education, University and the changes in Hungarian economic, social, domestic, and foreign policy in the given periods.     

一类简单机器人运行轨道的规律及设计

一类简单机器人装有正三角形底盘,在三角形的2个顶点处装有2个主动轮,另一个顶点处装有方向可任意变化转动的滑轮,可通过调节机器人的2个主动轮的转速来控制机器人的运行轨道。本文研究了在一次设定机器人的2个主动轮的转速时的运行规律,给出了数学证明。并在此基础上,作出了一次性设定2个主动轮转动的线速度的值,以及设定该值后在运行的过程中还可进行一次调节,使简单机器人运行到目标点的时间最少的设计。     

电渣重熔PID闭环控制系统的研究

电渣重熔冶炼过程自动控制环节,在理论研究上是建立在被控对象的线性、定常数学模型的基础上的。但是对于电渣重熔冶炼过程控制对象模型是一个多变量、非线性、强耦合的特点,在根本无法建立较为准确的数学模型的情况下,采用数字PID控制器模块,可实现参数自整定功能。