野外拓展训练中师生地位的探究

运用文献资料的研究方法,首先论述了教师在野外拓展训练中的位置和作用,指出教师在拓展训练中是一个组织者、引导者、中介者、服务者.然后对学生在拓展训练中的地位进行了阐述,认为学生在拓展训练中是一个创造者、感受者,是一个求索者、认知者.文章最后指出:拓展训练中教师应创造一种和谐民主的师生关系,重点突出学生的主体地位.     

Why some early college high school students do not transition to a 4‐year college: An exploration of perceived barriers and schooling experiences on students’ transition plans

This study examined why some seniors attending Early College High Schools did not plan to continue their education at a 4‐year college immediately after graduation despite attending schools designed to provide coordinated academic and social supports with the expectation that all students would continue their education. Most students in our study (75%) did plan to continue their education at a 4‐year college immediately after graduation. For the remaining students, we used cluster analysis to identify four distinct groups of noncollege bound students. These groups were evaluated based on background characteristics, perceived opportunities and barriers, and schooling experiences. Results indicate that noncollege bound students are diverse in their reasons for not continuing their education at a 4‐year program and that any reform efforts designed to personalize opportunities and supports for these students must take into account how combinations of perceived opportunities and barriers shape their postsecondary decisions.     

方程(axm+1)/(ax+1)=yn的正整数解

设a，m是大于1的正整数．本文证明了：当m〉2时，方程（ax^m＋1）／（ax＋1）=y^n仅有有限多组解（x，y，n）适合min（x,y,n）〉1，而且这些解都满足y^n≤x^（m-）≤a^（m^2-3m＋2）。     

方程(αx~m-1)/(αx-1)=y~n的正整数解

设a,m是大于1的正数.证明了:当m>2时,方程(αxm-1)/(αx-1)=yn仅有有限多组正整数解(x,y,n)适合min(x,y,n)>1,而且这些解都满足yn<2xm-1≤2αm2-3m+2.     

有保证调度算法的研究

有保证的调度对硬实时系统是必须的 ,这是因为系统中每个进程必须满足它们的截止时间 ,否则后果不堪设想 .本文讨论了两种有保证的调度算法 ,它们是分支限界法和回溯法 ,给出了用这两种算法寻找最优解的过程 ,提出逻辑结点和物理结点的概念 .通过对多个进程集合寻找最优解的实验 ,对两种算法在产生的结点个数、比较次数、搜索树的拓扑结构及占用的内存空间等方面进行了比较     

平面图的着色数

用数学归纳推理的方法，论证了图论中的简单平面图Gn是4着色的．     

几种与"的"有关的歧义现象分析

"的"是现代汉语中最活跃的虚词,因它而引起的歧义现象复杂多样,如施事主语与普通定语混同;粘着性定中结构与一般定中结构混同;"的"的隐现不当;语气词"的"与结构助词"的"同形同现;动态助词"的"与结构助词"的"同形同现.     

新型“组合矩阵”特征值的一些“新界”

定义了一种新型多元“组合矩阵”，通过对该矩阵的范数、谱半径与特征值的“新界”论证，提供了估算‖∞、‖M^-1N‖∞上界、ρ(M^-1N)、λ（M^-1N)与λi(A B)上下界公式。     

Solution of the Dirac equation with the ring-shaped oscillator potential

The ring-shaped oscillator potential, obtained by replacing the Coulomb part of the Hartmann potential by a harmonic oscillator term, was investigated. Under the equal vector potential and scalar potential, the Dirac equation was solved in spherical coordinate. The exact energy spectrum of the bound states was presented as a solution to the confluent hypergeometric equation by boundary conditions. Furthermore, the normalized angular and radial wave functions were presented.     

拓展训练模式教学法在化工管路拆装实训中的探索

在高职化工类专业的实践教学活动中引入拓展训练模式,挖掘个人潜能,提高团队精神,培养出企业所需要的高素质人才,尽可能做到与企业"无缝接轨",笔者在化工管路拆装实训实践教学活动中,尝试性的探索了拓展训练模式教学法,提高团队凝聚力,培养学生的合作意识和团体精神,收到了一定的效果。