讨论教育实习成绩评定一致性信度K指标评鉴标准

文章运用数理统计基本原理和方法，就教育实习成绩评定的K指标评鉴标准进行初步探索，并给出了K指标的点估计、区间估计以及假设检验的计算公式和方法。     

语料库资源共享平台探析

自20世纪50年代以来,语料库语言学研究得到世界各国的广泛重视,语料库被用于语言学研究、词典编撰、二语习得研究等.语料库的建设是一个复杂的系统工程,并不是所有的人都有能力建设语料库.本文分析了语料库资源共享对语言研究和语言教学的意义、语料库资源共享目前还存在的一些困难,并提出搭建一个语料库资源共享平台的设想.     

Cobb-Douglas函数模型参数估计方法的研究

根据LS估计理论，对目前Cobb—Douglas函数模型参数估计方法存在的问题进行了分析．通过方差稳定化变换建立了新的参数估计模型，新模型基本满足Gauss—Markov假定，保持了LS估计的优良性质．     

一类时变参数混沌滚动密钥产生器的构造及分析

利用一类具有偶对称特性的一维分段线性映射，提出了时变参数混沌滚动密钥产生器的构造方法，所产生的模拟混沌序列的相空间分布不包含局部的线性结构，其密钥序列也具有理想的密码学特性。     

Nicotiana ovule extracts in duce nuclear reconstitution of demembranated Xenopus sperm in cell-free system

s Nicotiana tabaccum ovule extracts induced nuclear reconstitution of demembranated Xenopus leavis sperm in a ceil-free system. Demembranated Xenopus sperm began to swell after 15 rmin of incubation with Nicotiana ovulde extracts. Accompanying the process of incubation,Xenopus sperm decondensed and their shapes changed gradually from long and ellipse to round. The completely decondensed chromatin was surrounded with membrane structure, which was a mixture envelope of a double membrane and a single membrane. Nucleosome assembly was verified by means of micrococcal nuclease digestion to reconstituted nuclei and DNA electrophoresis. Nicotiana ovule extracts supplied one more experimental model and system.The new system could promote powerfully the research on mechanisms of cell division and cell cycle regulation.     

Nicotiana ovule extracts induce nuclear reconstitution of demembranated Xenopus sperm in cell-free system

Nicotiana tabaccum ovule extracts induced nuclear reconstitution of demembranated Xenopus leavis sperm in a cell-free system. Demembranated Xenopus sperm began to swell after 15 min of incubation with Nicotiana ovule extracts. Accompanying the process of incubation, Xenopus sperm decondensed and their shapes changed gradually from long and ellipse to round. The completely decondensed chromatin was surrounded with membrane structure, which was a mixture envelope of a double membrane and a single membrane. Nucleosome assembly was verified by means of micrococcal nuclease digestion to reconstituted nuclei and DNA electrophoresis. Nicotiana ovule extracts supplied one more experimental model and system. The new system could promote powerfully the research on mechanisms of cell division and cell cycle regulation.     

数学建模的基本原则和基本方法

在数学建模过程中,模型假设与模型建立是最重要的两个步骤,两者构成机理分析的重要环节.本文将进一步探讨,在这两个步骤中应遵从的基本原则和具体方法,并结合实例阐明这些原则和方法,从而使人们对数学建模全貌有一个更深刻的了解和认识.     

现代企业信息工作经济性的分析

从企业的信息规定性出发，提出了借以分析企业信息经济性的“信息向量”概念，进而讨论了企业的信息规模经济性、信息范围经济性、信息速度经济性和信息网络互联的经济性．     

阿尔茨海默病研究进展

 综述了阿尔茨海默病（Alzheimer's disease,AD）发病机制的胆碱能假说、Aβ级联假说、免疫炎症学说、兴奋毒性学说和糖脂代谢学说等的研究进展;介绍了近几年发展起来的新的研究手段,如光遗传及冷冻电镜技术和光、磁、超声技术在AD研究及治疗领域的应用;提出应注重与其他跨界学科的交叉,如先进成像/检测技术、精准诊断和防治、可穿戴式物理治疗仪等。     

关于话语内含的准确理解

为了准确把握话语内含,成功地臆测对方的言外之意,交际双方不但要有不受语境假设影响的共知,还必须掌握每一项有关的语境信息。在跨文化交际中尤其需要利用对语境及其功能的认识,才能避免语用失误,准确地理解对方和表达自己。