Documentation for computer users

This paper describes the nature, purpose and importance of documentation for users of computers. The key factors in the good design of documentation are considered. Particular emphasis is placed on the matching of the presentation to the background and needs of the users. The problems of production and circulation are also outlined.     

Hybrid Feedforward Neural Networks for Solving Classification Problems

A novel multistage feedforward network is proposed for efficient solving of difficult classification tasks. The standard Radial Basis Functions (RBF) architecture is modified in order to alleviate two potential drawbacks, namely the curse of dimensionality and the limited discriminatory capacity of the linear output layer. The first goal is accomplished by feeding the hidden layer output to the input of a module performing Principal Component Analysis (PCA). The second one is met by substituting the simple linear combiner in the standard architecture by a Multilayer Perceptron (MLP). Simulation results for the 2-spirals problem and Peterson-Barney vowel classification are reported, showing high classification accuracy using less parameters than existing solutions.     

一种面向Hash函数的粗粒度可重构处理结构：CRAH

通过分析常用Hash函数在处理结构上的相似性，本文提出了一种面向Hash函数的专用可重构处理结构——CRAH。它提供专用功能部件和层次化路由资源，可灵活有效地支持常用Hash函数。将几种常用Hash算法映射到CRAH上的结果表明：与现场可编程门阵列（PPGA）结构相比，CRAH的速度快，资源利用率高；与专用算法电路相比，CRAH在额外开销增加较小的前提下，能有效支持多种Hash函数。     

布尔函数表示的二元判定图方法的研究与实现

布尔函数是数字系统与计算机科学等领域的基础，有广泛的应用。本文对布尔函数的二元判定图表示方法进行了详细讨论，说明了基于布尔函数的真值表和香农展开式来构造二元判定图的方法、二元判定图的简化、以及它在数字电路设计与测试中的应用。     

K次可微多元函数列的收敛性

本文将函数列的微分定理推广到多元函数列的微分上去．     

在VB应用程序中处理程序配置信息

讨论了VB应用程序中处理程序配置信息的三种方法，以便在发行的程序能方便地对程序设置修改，而这也是一个专业化程序原基本要求。     

2阶相关免疫函数的计数问题

本文主要讨论2阶相关免疫函数的计数问题,并给出2阶相关免疫函数个数的下界公式.     

Mapping vegetation in a heterogeneous mountain rangeland using landsat data: an alternative method to define and classify land-cover units

Three major problems are faced when mapping natural vegetation with mid-resolution satellite images using conventional supervised classification techniques: defining the adequate hierarchical level for mapping; defining discrete land cover units discernible by the satellite; and selecting representative training sites. In order to solve these problems, we developed an approach based on the: (1) definition of ecologically meaningful units as mosaics or repetitive combinations of structural types, (2) utilization of spectral information (indirectly) to define the units, (3) exploration of two alternative methods to classify the units once they are defined: the traditional, Maximum Likelihood method, which was enhanced by analyzing objective ways of selecting the best training sites, and an alternative method using Discriminant Functions directly obtained from the statistical analysis of signatures. The study was carried out in a heterogeneous mountain rangeland in central Argentina using Landsat data and 251 field sampling sites. On the basis of our analysis combining terrain information (a matrix of 251 stands×14 land cover attributes) and satellite data (a matrix of 251 stands×8 bands), we defined 8 land cover units (mosaics of structural types) for mapping, emphasizing the structural types which had stronger effects on reflectance. The comparison through field validation of both methods for mapping units showed that classification based on Discriminant Functions produced better results than the traditional Maximum Likelihood method (accuracy of 86% vs. 78%).     

基于多Agent的电站负荷优化分配实施系统

在电站的整个运行过程中,机组间负荷的分配是一个非常关键性的过程.因此仅有好的优化算法是远远不够的,还需要有一个很好的实施系统。本论文将多Agent理论和优化算法结合起来,建立了一个具有智能性,并能将优化计算的结果很好加以实施的电站负荷优化分配实施系统,从而为电站机组间负荷优化分配的迅速而高效的实施提供了依据。     

Authorware作品全屏显示控制技术

Authorware作品在演示时往往会出现演示窗口不能按设计者的意图全屏显示的问题,产生这一现象的原因是计算机系统的显示器分辨率与作品设计分辨率不一致。文中详细说明了解决这个问题所采用的两种技术,并提出了三种可行的解决方法。