一种基于熵的三维边界检测方法

提出了一种基于指数特性的三维边界检测熵算子，通过局部窗口的熵来确定物体表面点位置，再通过窗口重心坐标确定表面方向，并给出了相应的快速算法，实验结果表明这种方法对三维医学图象是有效的。     

防褐物质处理对苹果梨果皮色泽的影响

用ＮａＨＳＯ３、Ｖｃ、ＮａＣｌ和柠檬酸处理苹果梨，结果表明，ＮａＨＳＯ３和Ｖｃ对苹果梨果皮褐变的抑制效果较好，总酚及叶绿素含量明显高于另两种处理，而ＭＤＡ低于另两种处理．Ｖｃ和ＮａＨＳＯ３作为抗氧化剂在果皮细胞中起着抗衰老作用．     

并行工程在新产品开发中的应用

通过对新产品开发过程研究，找出我国制造业在新产品开发过程中存在的问题。应用并行工程的理论和方法提出了解决问题的途径。     

现代信息通讯技术对高等教育的影响及对策研究

本文主要论述了现代信息通讯技术讯猛发展,对高等教育的改革和发展有着积极的作用,它不仅冲击了传统的教育思想和观念,并且为了适应时代和社会发展的需要,教育目标、教育手段、教学方法、教学模式、师生关系、学校管理等必须作出相应调整。但是,在各领域的广泛应用中也存在各种问题,文章有针对性提出了应对的策略。     

浙江省铁线莲属药用植物资源

介绍了浙江省铁线莲属药用植物种类、地理分布、本草记载、临床功效等,同时对该属资源合理利用作了建议。     

Remote sensing of spatial patterns of urban renewal using linear spectral mixture analysis: A case of central urban area of Shanghai (1997―2000)

It is very important to integrate remote sensing with urban geography that the spectral mixture analysis technique is applied to urban land cover evolvement and its eco-environmental effect. Urban land cover is mainly composed of complicated artificial materials, which is the key factor to limit the development of the spectral mixture analysis technique. There are two main aspects in which the technique of spectral mixture analysis is applied to urban geography： one is to calculate vegetation fraction; the other is to build quantitative model of the urban impervious surface obtained from the combination between high albedo fraction and low albedo fraction. The technique of spectral mixture analysis is firstly applied to study urban renewal pattern, scale and mode which happened in Shanghai City from 1997 to 2000,     

Strategy for the mapping of interactive genes using bulked segregant analysis method and Mapmaker/Exp software

A qualitative trait is usually controlled by a single gene, but it may be sometimes controlled by two or even more genes. This phenomenon is called gene interaction. Rapidly searching for linked mo- lecular markers via bulked segregant analysis (BSA) and then constructing regional linkage map with Mapmaker/Exp has become a common approach to mapping single major genes. However, methods and computer programs developed for mapping single major genes cannot be simply applied to interactive genes because the genetic patterns of gene interac- tions are quite different from that of single-gene in- heritance. Up to now, experimental methods for quickly screening molecular markers linked to inter- active genes and statistical methods and corre- sponding computer softwares for simultaneously analyzing the linkage relationships of multiple mo- lecular markers to an interactive gene have not been available. To solve this problem, in this paper, we propose a strategy for mapping interactive genes using BSA and Mapmaker/Exp. We demonstrate that all interactive genes can be mapped by the 'BSA Mapmaker/Exp' strategy using F2 generation (in a few cases, F3 generation is also needed). As BSA and Mapmaker/Exp have been broadly used in gene mapping studies and are well known by many re- searchers, the strategies proposed in this paper will be useful for practical researches.     

一种修正的SPAWG算法

最小费用半光路问题是指在给定的全光WDM网络条件下，在源节点和目的节点之间找一条费用最小的半光路由．与一般的最小路问题不同的是网络在节点上还有与链路相关的费用函数，对Chlamtac等人的SPAWG算法，给出了一种修正的SPAWG算法。     

一种带辅助支路的移相全桥零电压PWM变换器

提出了一种带辅助支路的移相全桥零电压PWM变换器。详细分析了该变换器的工作原理,讨论了电路的参数,进行了软件仿真,并在一台功率为1kW、工作频率为100kHz的通信用开关电源装置上进行了实验验证。仿真和实验结果都证明了增加的辅助电路能够有效地减小变换器副边占空比的丢失,并使滞后桥臂的ZVS范围受到的影响最小。     

一类n阶区间系统的鲁棒输出反馈镇定

给出一类n阶区间系统输出反馈控制器的设计方法：首先利用适当选择的正交变换，将一类n阶区高系统的稳定性检验问题转化为较低阶的问题，并给出这类n阶区间系统稳定性判别准则，进一步地将稳定性分析结果应用于这类系统的鲁棒输出反馈控制器的设计。最后通过示例说明本文所给出的方法的有效性和实用性。