合理应用盐酸氯普鲁卡因之我见

介绍了局麻药盐酸氯普鲁卡因的特点，通过对盐酸氯普鲁卡因的水针、无菌粉针、无菌冻干粉针3种剂型的比较，使人们直观地了解3种剂型的特点和优劣，从而为各种剂型的选择提供参考。     

Samples Selection for Artificial Neural Network Training in Preliminary Structural Design

An artificial neural network (ANN) is applied in the preliminary structural design of reticulated shells. Major efforts are made to enhance the generalization ability of networks through well-selected training samples. Number-theoretic methods (NTMs) are adopted to generate samples with low discrepancy, i.e.uniformly scattered in the domain, where discrepancy is a quantitative measurement of the uniformity. The discrepancy of the NTM-based sample set is 1/6-1/7 that of samples with equal spacing. In a case study,networks trained by NTM-based samples are compared with those trained by equal-spaced samples in generalizing performance. The results show that both the computational precision and stability of the former ANNs are more satisfactory than those of the latter. It is concluded that the flexibility of ANNs in generalizing can be effectively increased by use of uniformly distributed training samples rather than simply piling data.More reliable uniformity should be obtained, however, through NTMs instead of equal-spaced samples.     

Algorithm of graph isomorphism with threedimensional DNA graph structures

ResearchonDNAcomputingwasinitializedin1994 ,whenAdleman[1] proposedamethodofsolvingasmallinstanceoftheHamiltonianPathproblembyalaboratoryexperimentinvolvingDNAmolecules .Later,Lipton[2 ] demonstratedhowalargeclassofNP completeproblemscouldbesolvedbyencodingtheprobleminDNAmolecules .Inparticular ,LiptonshowedonefamousNP problem ,theso called“satisfiability”problem (SAT)andsubsequentlytheotherNP problemscouldbeencodedandsolvedusingmolecules .TheadvantagesofDNAcomputingareitsmassivepa…     

用非线性反馈控制混沌R(o)ssler系统到达任意目标

本文设计了识别不确定R(o)ssler系统未知参数的观测器,提出了控制R(o)ssler系统中混沌的非线性反馈控制策略.数值模拟结果表明:观测器可以有效地标识未知参数;选取不同的目标参数,既可以使R(o)ssler系统稳定在不同周期轨道上,也可以稳定在任意目标点上.     

真分数表成单位分数和的一类特解

用初等的方法研究了m/n表法，并给出了真分数表成单位分数和的一类特解。     

轨道压缩映象的公共不动点定理

引入新型映象———拟压缩映象,在一定条件下,建立了一些新的公共不动点定理,这些结果改进、统一和推广文献[1]———[4]的主要结果.     

农村土地产权制度与土地综合生产能力的经济学分析

现存农村土地制度存在的主要问题是:土地的产权关系不明晰,土地使用权的不稳定,降低了农民对土地的利用效率;农民进行土地改良的投资十分有限,大大降低了土地综合生产能力.本文从产权经济学的角度分析农村土地产权制度与土地综合生产能力的关系.     

虚拟机在操作系统开发中的应用研究

虚拟机是使用软件模拟的方法在电脑上模拟出来的计算机，利用它来开发OS软件能显著地缩短开发周期，降低开发难度。本文从实战出发，介绍了将虚拟机应用在OS开发实战中的应用方法。     

试论饭店员工忠诚度管理

人力资源供过于求,人才资源供不应求,这是当今饭店业人力资源的现状.对员工进行忠诚度管理,培养与维系员工的忠诚感,建立一支与饭店共发展的员工队伍,留住优秀人才,已成为饭店业人力资源管理的重要内容.