原条量材设计优化软件的研制

根据原条量材设计赋权有向图优化理论数学模型 ,按标号法对有向图求解的思路编制了原条量材设计优化软件。该软件采用的用户界面是对话框类型 ,利用双向链表存储常见木材缺陷的信息 ,并把缺陷的判定作为一个函数来使用 ;利用数据库技术把原木价格表按树种分成若干个数据库存储起来 ,并使用ADO数据对象访问技术作为检索数据库的方法。该软件可在Windows9X、WindowsXP、Windows2 0 0 0等操作系统下运行 ,速度较快 ,能够满足量材需要 ,并对改变目前靠经验量材的生产现状 ,使原条量材设计工作更加科学、合理 ,具有一定的指导意义。     

液化石油气储配站平面系统布置设计

运用系统布置设计原理对液化石油气储配站同系统进行了布置设计，其设计方法是通过分析站内各设施及工艺要求，并根据作业关系，先后绘出相互关系图，空间关系图及布置方案图，比较、评价各方案，选出最佳的总平面设计方案。     

Proportional limit of wood obtained from a load-time diagram during an impact bending test

We transferred the linear part of a load-deflection diagram from an impact bending test of wood into a load-time diagram. In addition, we proposed a method to obtain the proportional limit from the load-time diagram. Japanese cedar (Cryptomeria japonica D. Don), hondo spruce (Picea yezoensis Carr. var.hondoensis Rehd.), hiba arbor-vitae (Thujopsis dolabrata Sieb. et Zucc.), Japanese red pine (Pinus densiflora Sieb. et Zucc.), paulownia (Paulownia tomentosa Steud.), Manchurian ash (Fraxinus mandshurica Rupr.), and Japanese evergreen oak (Quercus acuta Thunb.) were used in this study. The dimensions of each specimen were 115mm (L) * 7mm (R) * 7mm (T). The results were as follows: (1) The linear region of the load-deflection diagram in the impact bending test could be transferred with sufficient accuracy to a load-time diagram using a sine function. (2) Approximating the load-time diagram by a linear equation was useful for obtaining the proportional limit.     

Optimize graphics reasoning technlogy and its application on sheep diseases curing expert system

Expert system is a program system that prossesses special knowledge and esperience, is reasoning solving process which simulates experts according to special konwledge and espericence with artificial intelligence. This paper discusses the decision-making technology and method of expert system based diagram reasoning, the optimized diagram reasoning is also pointed out. The development technology and method of sheep diseases curing system is expatiated.     

Methods of Determining and Deleting Additional Dummy Arrows in Network Diagram

Based on analysis of the function of dummy arrow in network diagram, this paper provides some methods to determine and delete additional arrows. It will be helpful to personnel in engineering network planning for determining and deleting the additional dummy arrows quickly and correctly.     

Algorithm to Transform Dynamic Causality Diagram Into Belief Network

The Dynamic Causality Diagram methodology is a new probabilistic reasoning model based on Belief Network. To some extent, it is similar to the Belief Network in structure. So that knowledge from one can be transformed into the other on some conditions. To begin with, this paper discusses the similarities and differences between them, and finally presents a transformation algorithm from Dynamic Causality Diagram into Belief Network. The algorithm is composed of two parts: a mapping algorithm of structure and a generating algorithm of conditional probability tables.     

计算喷雾干燥塔直径和高度的解析法

为了改进图解积分法要反复查列线图的繁琐过程及克服该法不能编程计算的困难，提出了计算喷雾干燥塔直径和高度的一种新方法——解析法。采用解析法导出了过渡区(喷雾干燥大部分情况均落在此区间)计算雾滴水平飞翔距离和时间、雾滴减速运动垂直下降距离和时间的解析式，还导出了层流区、湍流区计算雾滴运动距离的解析式。利用这些解析式结合已报道的层流区及湍流区计算雾滴运动时间的有关解析式即可用解析法求出喷雾干燥塔的直径和高度。算例表明，解析法比图解积分法简便、准确，解析法手算或计算机编程计算均很方便、计算精度可以满足工程设计要求。     

虚拟仪器在示功图采集和分析中的应用

将虚拟仪器技术与发动机的示功图采集和分析联系起来 ,由硬件和图形编程语言—— L ab VIEW编程 ,采集和分析发动机缸内压力。该仪器能够采集多循环的缸内压力 ,存储压力值或对应的电压值 ,进行平均化、光顺处理 ,计算与发动机有关的指示性能和有效性能指标 ,计算压力升高比 ,计算放热率和累积放热率等技术指标。     

微灌毛管水力计算曲线图及其应用(均匀管坡)——微灌水力设计计算方法探讨之四

毛管水力设计,需要计算最小压力孔号,判断最大压力孔位置以及毛管最大压力偏差和极限长度,虽然已提出解析公式,但有相当大的工作量。为了减轻技术人员的设计计算工作量,特将(塑料管)最小压力孔号、压力不小于末孔的最小孔号、毛管最大水头偏差、毛管极限孔数等计算并绘成曲线图,供设计者查用。