CAI课件应用于原子物理课堂教学

面向２１世纪,实现教学手段现代化,在Ｗｉｎｄｏｗｓ９５下,以Ｏｆ－ｆｉｃｅ９７集成软件中的Ｐｏｗｅｒ Ｐｏｉｎｔ工具软件为主,配合３Ｄｍａｘ、ＡｕｔｏＣＡＤ软件的应用,制作了部分原子物理学电予教室（ＣＡＩ）课件,集文字、图象、声音、图形动画为一体,具有多媒体效果,生动形象地展示出教学内容,改革了传统的数学模式。     

有限维单Z-阶化李超代数的结合型

本文首先研究了有限维单Z-阶化李超代数上结合型的若干性质;然后给出了有限维单Z-阶化李超代数的一个结合型是非退化的必要条件．     

The genome of the mesopolyploid crop species Brassica rapa

We report the annotation and analysis of the draft genome sequence of Brassica rapa accession Chiifu-401-42, a Chinese cabbage. We modeled 41,174 protein coding genes in the B. rapa genome, which has undergone genome triplication. We used Arabidopsis thaliana as an outgroup for investigating the consequences of genome triplication, such as structural and functional evolution. The extent of gene loss (fractionation) among triplicated genome segments varies, with one of the three copies consistently retaining a disproportionately large fraction of the genes expected to have been present in its ancestor. Variation in the number of members of gene families present in the genome may contribute to the remarkable morphological plasticity of Brassica species. The B. rapa genome sequence provides an important resource for studying the evolution of polyploid genomes and underpins the genetic improvement of Brassica oil and vegetable crops.     

物理教学信息资源库的研制

在分析建设大学物理教学信息资源库的意义、方法、途径、管理、应用等方面的问题的基础上,提出一种建设和管理大学物理教学信息资源库的新思路,总结大学物理教学信息资源库的建设和管理经验．     

网络安全防御在石化企业的应用

从网络系统的角度出发,采用主动防御设计思想,对石化公司网络安全管理现状进行了分析,阐述了使用局域网安全技术,提高公司局域网安全的技术和策略。     

多项式组的结式理论

目前求解两个一元多项式最大公因式的典型方法是辗转相除法和张三元、汪国昭的方法．虽然张、汪的方法比起辗转相除法具有存储量和运算时间均较小等特点,但它的运算速度仍较低．这是由于它需计算许多行列式的缘故．本文引入了一元和二元多项式组的结多项式的概念并讨论了它们的性质．从而开辟了一条求解多项式最大公因式的新途径．     

Homing endonucleases: from basics to therapeutic applications

Homing endonucleases (HE) are double-stranded DNAses that target large recognition sites (12–40 bp). HE-encoding sequences are usually embedded in either introns or inteins. Their recognition sites are extremely rare, with none or only a few of these sites present in a mammalian-sized genome. However, these enzymes, unlike standard restriction endonucleases, tolerate some sequence degeneracy within their recognition sequence. Several members of this enzyme family have been used as templates to engineer tools to cleave DNA sequences that differ from their original wild-type targets. These custom HEs can be used to stimulate double-strand break homologous recombination in cells, to induce the repair of defective genes with very low toxicity levels. The use of tailored HEs opens up new possibilities for gene therapy in patients with monogenic diseases that can be treated ex vivo. This review provides an overview of recent advances in this field.     

Finite-Time Stochastic Stability of Random Impulsive Positive System

The paper focuses on the finite-time stochastic stability(FTSS) problems for positive system with random impulses. Combining Lyapunov functions with the probability property of the impulsive interval, first, the sufficient conditions of FTSS for the positive systems affected by one type of random impulses are given; second, the criteria of FTSS for positive systems suffered from multiple types of random impulses are established. Finally, two examples are presented to show the validity of results.     

多层前馈神经网络技术在理财商务网站中的应用

针对会员理财的需求如何最大可能地发掘他们的关注点,是一个理财系统所最为关心的内容.基于聚类分析的挖掘技术可以从大量的数据中抽取潜在的、有价值的信息,而通过人工神经网络技术中的优化算法,则可以明显地提高数据挖掘的效果.