VFP表单任意列表格及嵌入控件的设计

本文针对ＶＦＰ系统在表单中设置表格对象，首先需要确定列数的限制，提出了一个利用宏替换命令和其它事件代码设置任意列表格及嵌入控件的表单程序设计方法。     

Economy and CO2 emissions trade-off: A systematic approach for optimizing investments in process integration measures under uncertainty

In this paper we present a systematic approach for taking into account the resulting CO₂ emissions reductions from investments in process integration measures in industry when optimizing those investments under economic uncertainty. The fact that many of the uncertainties affecting investment decisions are related to future CO₂ emissions targets and policies implies that a method for optimizing not only economic criteria, but also greenhouse gas reductions, will provide better information to base the decisions on, and possibly also result in a more robust solution. In the proposed approach we apply a model for optimization of decisions on energy efficiency investments under uncertainty and regard the decision problem as a multiobjective programming problem. The method is applied to a case of energy efficiency investments at a chemical pulp mill. The case study is used to illustrate that the proposed method provides a good framework for decision-making about energy efficiency measures when considerations regarding greenhouse gas reductions influence the decisions. We show that by setting up the problem as a multiobjective programming model and at the same time incorporating uncertainties, the trade-off between economic and environmental criteria is clearly illustrated.     

On analog circuit design methodology via multi-objective geometric programming

This paper concerns a design methodology for analog circuit problems, which is based on formulating the problem as a multi-objective geometric program （GP）. Multiple objectives are combined into a scalar objective thru certain convex functions and thus can be solved using regular GP algorithms. In contrast to single-objective optimization, simultaneous consideration of all objectives yields a compromising solution among objectives. By varying individual objective＇s weight factor, a Pareto （or trade-off） curve can be constructed, providing designers with a useful decision-making information.     

提高回采工作面瓦斯抽放率的途径

通过对已试抽工作面的瓦斯抽放效果分析 ,对抽放钻孔直径、钻孔间距、抽放负压、封孔深度等直接影响瓦斯抽放率的因素进行了研究改进 .探寻了戊组煤层钻孔瓦斯涌出规律 ,并提出了适合戊组煤层的合理瓦斯抽放参数 .     

磁性测量的冲击法及计算程序

主要介绍了磁性测量冲击法的基本原理，并用Fortran语言编写了相应的磁性数据的处理程序，实践证明，该程序实用性强，数据处理既快又精确，效果很好。     

PC-1500计算机在公路测量绘图中的应用

介绍了PC - 15 0 0计算机在公路测量绘图中的应用 ,阐述了施工测量中纵横断面图绘制程序的编制过程 ,并收到了良好的效果。     

油藏工程学的发展现状及认识

80年代初期 ,国内诞生的油藏工程专业 ,在将近 2 0年的时间里 ,获得了飞速的发展。它经历了两个阶段 ,简单定量阶段和精确定量阶段。简单定量方法在现代研究中仍占主要地位。随着数学模型的完善及计算机技术的发展 ,精确定量的方法得到了较大程度的发展。随着油藏开发工作的进一步加深 ,精确定量的方法必将占据主要地位。     

送电线路工程预算土石方量计算软件程序开发与应用

以送变电工程公司最近施工的项目“大城-留各庄110kV线路工程”为例，结合作者最近编制的土石方量计算程序介绍了VEP程序的设计思路及方法。     

基于宏程序的冶金锯片数控加工方法

新型硬质合金齿圆锯片在钢铁行业中的应用越来越广泛,传统的加工方法已不能满足当前的生产效率及加工精度的需求。提出基于宏程序的卧式加工中心对冶金锯片的数控加工方法,分析了加工工艺,阐述了宏变量的定义,编制了结构化的宏程序,实现了数控宏程序与制造工艺的巧妙结合。利用台湾LEADWELL四轴卧式加工中心制造成品,实践证明:该方法控制方便、加工精度高、效率高、适应性强及程序可读性好。     

网上黑客工具——木马探讨（续一）

5木马的危害 木马的危害主要表现在远程控制方面。木马连接建立后，控制端端口和木马端口之间将会出现一条通道。