状态矩阵法在企业MIS中的应用

提出了一种改进的状态矩阵法用以控制事务处理流程．该方法通过建立 事务执行的状态环和构造相应的状态矩阵,并按着给定算法动态地驱动状态 矩阵运转,从而严格地控制了事务的时序关系,避免了由于事务在执行顺序 上的失误而产生的错误;不仅提高了系统的抗病能力,而且起到了用户指南 的作用．     

各向异性Besov类的小波逼近

通过用一元小波的张量积构造多元小波基，给出各向异性Besov类用小波逼近误差的渐近估计．     

对甲氧基苯乙烯基染料的微波促进合成

目的研究快速合成对甲氧基苯乙烯基染料的合成方法。方法在微波促进下，以2-烷基或4-烷基取代的杂环碱或杂环季铵盐和对甲氧基苯甲醛为原料，在催化剂作用下合成一系列对甲氧基苯乙烯基染料，并用元素分析，^1HNMR，MS，IR，UV—vis确证产物的结构。结果合成所需时间短、产率高。结论提供了一种快速合成对甲氧基苯乙烯基染料的有效方法。     

铜三元配合物[Cu(sal-ala)bipy]·CH3OH·2H2O的晶体结构

席夫碱金属络合物的生物活性,尤其是抗癌活性,是一个受到关注的研究课题[1-3].     

Carcinogenesis switched on by DNA cross-link between complementary bases aroused by aflatoxin and N-nitroso compounds

The di-region theory put forward by Dai Qianhuan, a molecular mechanism of chemical carcinogenesis, concluded that the carcinogenesis induced by most of the environmental carcinogens is switched on by the cross-linking between DNA complementary bases aroused by the bifunctional alkylation of their metabolic intermediates. It was evidenced in this paper with DNA filter elution method that one carcinogenic mycotoxin, aflatoxin G1, four carcinogenic N-nitroso compounds, N-nitrosodiethyl-amine, N-nitrosodibutyl-amine, N-nitrosomorpholine and N-nitrosopyrrolidine, one carcinogenic diazo color, 4-dimethylaminodiazobenzene and one carcinogenic nitrogen-containing heterocyclic compound, quinoline, all induced DNA interstrands cross-linking with dosage correlation after metabolic activation. However, the non-carcinogens in corresponding series for control, aflatoxin B2, N-nitroso-diphenylamine, 4′-bromo-4-dimethylaminodiazobenzene and isoquinoline, cannot induce DNA interstrands cross-linking at all in the same condition. A method for the determination of cross-linking ratio between DNA complementary bases in total DNA interstrands cross-linking, which has no monitoring measure as yet, has been established for the first time based upon a 24 hour repairing experiment. The DNA complementary pair cross-linking ratio induced by a metabolized carcinogen is correlated with its carcinogenic potential. It may be concluded that the mutations including point and frameshift mutagenesis induced by aflatoxin and other carcinogens are switched on by their corresponding cross-linking base pair between complementary bases. Therefore, the di-region theory is a reasonable molecular mechanism for chemical, endogenous and physical carcinogenesis.     

知识库中近似推理命题的Fuzzy表达及其求值

面向知识的计算机处理,关键在探求对包含主观不确定性命题的表达和求值。本文根据Zadeh的近似推理理论,给出在含有语言信息的知识库查询中,以一种可表达思维模糊特征的Fuzzy零函数Z(s)作为执行Fuzzy程序的可优化判据,并给出著名Fuzzy谓词“a few”的解。     

多种小波基应用性能分析（Ⅱ）

将近年来提出的各种典型的小波基（小波函数）进行汇总,对其有关理论问题和应用时需要注意的具体细节进行详细分析,对科技工作者和工程技术人员有一定的实用价值。     

提升格式和双正交小波Riesz基

证明了提升格式保持小波对称性的定理;从一组不能生成Ｌ２（Ｒ）对偶Ｒｉｅｓｚ基的滤波出发,利用提升格式,得到一组新的双正交滤波集,并证明它们生成Ｌ２（Ｒ）的双正交紧支小波Ｒｉｅｓｚ基．     

唐家河自然保护区黑熊的觅食生态研究

本文结合同域分布的大熊猫进行对比研究,探讨了黑熊的食物基地,季节变化、营养成份、活动和巢域的空间格局,以及觅食对策等,从而揭示其比大熊猫具有更广泛的适应和生存能力。     

含硫希夫碱的研究(Ⅰ)S-萘甲基-β-N(2-羟基萘甲叉)二硫代肼基甲酸酯与钴(Ⅲ)和铁(Ⅲ)配合物

在前文的基础上,以S-萘甲基-β-N-（2-羟基萘甲叉）一二硫代肼基甲酸酯为配体,合成了Fe （Ⅲ）和Co（Ⅲ）的配合物,用元素分析、电导、磁化率、红外、差热、紫外可见光谱确定了它们的组成和结构,并测定了它们的形成常数.