中文字库组织与管理技术的研究

介绍了中文大字符集字库管理技术中有关字库的组织、管理及应用相关的内容,讨论了大字符集中字库的组织、数据复用高效管理、点阵绘制快速还原、及在RIP解释器中的应用等若干重要技术问题.     

基于关键字的Web页面摘要生成技术

论述了一种基于关键字的Web页面摘要生成技术，该技术通过设定关键字来作为摘要生成的引导关键字，然后对页面源文件进行扫描分析，提取其中满足一定条件的页面内容，自动归纳整理出一篇以引导关键字为中心的该Web页面的摘要文档。     

Text region extraction in a document image based on the Delaunay tessellation

In this paper, Delaunay triangulation is applied for the extraction of text areas in a document image. By representing the location of connected components in a document image with their centroids, the page structure is described as a set of points in two-dimensional space. When imposing Delaunay triangulation on these points, the text regions in the Delaunay triangulation will have distinguishing triangular features from image and drawing regions. For analysis, the Delaunay triangles are divided into four classes. The study reveals that specific triangles in text areas can be clustered together and identified as text body. Using this method, text regions in a document image containing fragments can also be recognized accurately. Experiments show the method is also very efficient.     

OLE自动化在PowerBuilder5.0中的应用

本文阐述了如何利用ＯＬＥ自动化，自动读取并合并存储在数据库中的独立的ｗｏｒｄ文档。从而提供了一种在ＰｏｗｅｒＢｕｉｌｄｅｒ５．０开发的应用程序中打印诸如ｗｏｒｄ文档类数据的方法。     

在实际工程中实现Windows打印

本文根据从事实际软件工程的经验给出了用Ｃ语言和Ｃ＾＋＋语文（包括ＢＣ３．１和ＢＣ４．５）完成Ｗｉｎｄｏｗｓ环境下的打印任务的具体方法，文中不仅对于使用不同的语言实现Ｗｉｎｄｏｗｓ打印和打印预览的过程进行了详尽的说明，而且显示了在Ｗｉｎｄｏｗｓ应用程序加入打印功能的设计结果。     

大尺寸容器开口接管雌雄样板的打印

针对大尺寸容器开口接管的雌雄样板打印问题,提出了先分条打印再组对的方法,以圆筒开口接管为例,利用VBA对AutoCAD进行二次开发,编制了相应雌雄样板放样软件,解决了在可绘制图幅有限的绘图机上打印大尺寸样板的问题.     

原位统计分布分析技术分析不同中低合金钢连铸板坯横截面上碳、硅、锰、磷、硫、铌、钛、钒

采用金属原位统计分布分析（OPA）技术考察了不同生产工艺条件下不同厚度的中低合金钢连铸板坯横截面上C、Si、Mn、P、S、Nb、Ti、V等元素的分布、富集及中心偏析形态。观察并描述了几种典型的中心偏析形式,如断续的、连续的以及正负偏析呈交错分布状等;发现大多元素的中心偏析模式相对固定,即在沿拉速方向一定厚度范围内具有稳定性;给出了最大偏析度、统计偏析度等定量表征元素分布状态的原位技术特征值;讨论了各元素在板坯中形成偏析的难易程度及常见的分布模式。硫元素的偏析分析结果和传统分析硫偏析的方法-硫印也基本一致。研究表明,原位统计分布分析技术能有效地应用于较宽含量范围内、不同厚度尺寸的中低合金钢板坯的成分分布分析和偏析分析,且其分析结果具有很好的重复性和可靠性。     

存储器行缓冲区命中预测研究

存储系统已经成为提高计算机系统性能的一个瓶颈.现利用DRAM存储器的访问特性来减少存储器访问操作的平均延迟.首先对存储器行缓冲区的控制策略进行研究,提出了读写分离式页模式预测器,并提出了双饱和计数器预测器和2级预测器等两种预测器方案;然后以SimpleScalar搭建的仿真平台对提出的预测方案进行了性能评估.结果显示,与缓冲区"关"策略相比,平均访问延迟减少了26%,IPC平均提高了4.3%;与缓冲区"开"策略相比,平均访问延迟减少了19.6%,IPC平均提高了2.5%.     

Competitive snoopy caching

In a snoopy cache multiprocessor system, each processor has a cache in which it stores blocks of data. Each cache is connected to a bus used to communicate with the other caches and with main memory. Each cache monitors the activity on the bus and in its own processor and decides which blocks of data to keep and which to discard. For several of the proposed architectures for snoopy caching systems, we present new on-line algorithms to be used by the caches to decide which blocks to retain and which to drop in order to minimize communication over the bus. We prove that, for any sequence of operations, our algorithms' communication costs are within a constant factor of the minimum required for that sequence; for some of our algorithms we prove that no on-line algorithm has this property with a smaller constant.A preliminary and condensed version of this paper appeared in theProceedings of the 27th Annual Symposium on the Foundations of Computer Science, IEEE, 1986.This author received support from an IBM doctoral fellowship, and did part of this work while a research student associate at IBM Almaden Research Center.     

录取通知书管理和打印系统的开发与应用

学校录取通知书的填写工作量大,容易出错,本文从提高工作效率、降低工作强度、格式统一美观出发,设计了 录取通知书的打印和管理系统。该系统兼具用户管理、信息管理和打印等功能,为学校招生工作提供了便利。