Effective Practice Utilization Using Performance Prediction Software

A successful capital facility project requires effective usage of practices to satisfy the expected high level of project objectives. To provide an effective practice usage plan, the impacts of implementing practices need to be quantified and better methods or tools for practice usage plan and control are also required. Despite a number of efforts at quantifying the impact of practice usage, little interest has been shown in developing the tools and techniques for improved implementation of practice use. This paper develops performance prediction models for project cost and schedule performance using predictive discriminant function analysis (DFA). The models are integrated into an automated and practical software program named the DFA program that helps deliver effective and dynamic project planning. The DFA program has a user-friendly interface that project managers or field engineers can easily apply to their projects to predict cost and schedule performance and to allow for improvement where possible. An overall project performance improvement process using the DFA program application is provided.     

借助计算机软件进行钢结构设计注意事项

应用计算机软件进行钢结构设计,可以加快设计进度,提高出图纸量。使用过程中必须清楚该软件的技术条件,输入正确的设计参数,并对计算结果的合理性做出科学的判断。将技术条件和输入参数分解为逐项具体操作,并给出了计算结果的判断方法。     

Winmation组态软件在工业梭式窑控制系统中的应用

介绍一种工业组态软件——Winmation及其在梭式窑炉计算机控制系统中的应用.在开发实践的基础上对Winmation的优缺点进行了评述,这对促进国内工业DCS组态软件的发展及设计开发更适合工业窑炉计算机控制系统具有一定的参考意义.     

计算机轧辊管理软件

使用计算机管理轧辊可以非常方便地查询每一条轧辊的材质、产地、车削情况使用情况及该辊的轧制产量等数据，并可根据要求打印表格或轧辊消耗报表。     

Compressive Strength of Fired Pellets Using Organic Binder: Response Surface Approach for Analyzing the Performance

In the present investigation, boric acid was used in the ball formation of iron ore fines to improve the compressive strength (CS) of fired pellet. Boric acid was used in combination with carboxymethyl cellulose (CMC) and saw dust and the pellets were fired at different firing temperatures from 1000 to 1300 °C. Box–Behnken statistical design was followed for analyzing the CS at different levels of boric acid, CMC and firing temperature. Results were discussed using 2D surface plots. Response function predictions determined by the regression analysis showed coefficient of correlation (R²) for CS as 0.96. Highest CS of 450 kg/pellet was obtained with addition of 1% boric acid, 0.1% CMC and a temperature of 1300 °C within the range of parameters under investigation.     

计算机原理辅助教学软件的研制

用Ｃ语言实现了ＣＡＩ系列的运算器模块各种信息流劝的全过程，使计算机原理的教学更加形象和直观，同时辅助教学软件将系列化。它的形成为学习研究计算机提供了有力的工具。     

Analyzing Liquefaction-Induced Lateral Spreads Using Strength Ratios

The writers backanalyzed 39 well-documented liquefaction-induced lateral spreads in terms of a mobilized strength ratio, su(mob)/σvo′ using the Newmark sliding block method. Based on the inverse analyses results, we found that the backcalculated strength ratios mobilized during lateral spreads can be directly correlated to normalized cone penetration test tip resistance and standard penetration test blow count. Remarkably, Newmark analysis-based strength ratios mobilized during these lateral spreads essentially coincide with liquefied strength ratios backcalculated from liquefaction flow failures. The mobilized strength ratios appear to be independent of the magnitude of lateral displacement (at least for displacements greater than 15?cm) and the strength of shaking (in terms of peak ground acceleration). Furthermore, the mobilized strength ratios backcalculated from these cases appear to be consistent for a given depositional environment and do not appear to be severely impacted by potential water layer formation.     

Improvement in Blast-Furnace Performance by Using a New Form of Iron Ore

The effective blast-furnace smelting of iron requires the use of uniform fluxed iron ore in sintered form—local cakes produced by the production of pellets with a high content of iron and residual carbon, minimal content of silica, high cold strength, and high strength in the blast furnace. The proposed new material combines the best metallurgical properties of sinter and pellets.     

管线钢落锤性能的影响因素分析

本文研究了影响管线钢落锤性能的几个因素,分析了铸坯偏析度。夹杂物、碳化物析出组织均匀性和组织类型对落锤性能的影响．     

回转式飞剪机剪刃运动干涉分析与计算机仿真

建立了回转式飞剪机剪刃侧隙数学模型,并利用matlab软件对模型进行仿真,分析结果对实际生产中合理调整剪刃侧隙和重合度等参数、确保飞剪机安全运行,具有重要的指导意义.     

计算机实验室软件系统维护方法的探讨

计算机实验室软件系统维护,是实验管理的重要组成部分,直接关系到设备的有效利用和实验质量.因应用需求上的差异,机房管理存在开放性与安全性的矛盾.采用硬盘克隆技术、独立于操作系统的多重引导和各种保护措施相结合,在不增加硬件,不影响整体性能的情况下,可向学生提供实用、方便、满足各种要求的计算机软件环境,减轻机房维护的工作强度,减少设备损坏,充分挖掘机房使用潜力.     

一种基于概念格的软件产品线演化分析方法

针对软件产品线演化成因分析、资产演化跟踪以及演化范围界定等问题,提出了一种基于概念格的软件产品线演化分析方法.该方法把引起软件产品线演化的因素分为内、外两部分,同时利用形式概念理论中的概念格,建立基于概念格的软件产品线演化分析框架,利用该框架可以实现对内、外演化因素的关联关系分析,软件产品线的资产演化跟踪以及软件产品线演化影响范围的确定.最后以整个产品线演化过程为基础,利用概念格结构的层次序,证明了该方法在形式化表示软件产品线演化过程方面中具有较好的精确性.     

计算机和GATEWAY之间通信软件包的设计制作

计算机和ＧＡＴＥＷＡＹ通信软件包的设计制作,是实现过程计算机级和基础自动化级之间通信的关键环节。根据宝钢高炉自动控制系统中过程计算和ＧＡＴＥＷＡＹ通信软件包的设计开发实践,阐述说明了计算机和ＧＡＴＥＷＡＡＹ之间的关系和地位、两者之间进行通信的内容,以及设计制作该软件时的处理要点及实现方法。     

用Install Shield制作安装程序

简要介绍了用 Install Shield软件制作安装程序的必要性 ,结合实例阐述了应用 Install Shield制作安装程序的步骤 ,并给出了学习制作安装程序的基本思路和方法。     

原子吸收石墨炉光谱法分析钢中硼

采用原子吸收石墨炉光谱法代替化学法分析钢中硼,克服了操作过程复杂、分析结果不稳定的问题,具有灵敏度高、干扰少的特点。     

Nonlinear Finite-Element Analysis Software Architecture Using Object Composition

Object composition offers significant advantages over class inheritance to develop a flexible software architecture for finite-element analysis. Using this approach, separate classes encapsulate fundamental finite-element algorithms and interoperate to form and solve the governing nonlinear equations. Communication between objects in the analysis composition is established using software design patterns. Root-finding algorithms, time integration methods, constraint handlers, linear equation solvers, and degree of freedom numberers are implemented as interchangeable components using the Strategy pattern. The Bridge and Factory Method patterns allow objects of the finite-element model to vary independently from objects that implement the numerical solution procedures. The Adapter and Iterator patterns permit equations to be assembled entirely through abstract interfaces that do not expose either the storage of objects in the analysis model or the computational details of the time integration method. Sequence diagrams document the interoperability of the analysis classes for solving nonlinear finite-element equations, demonstrating that object composition with design patterns provides a general approach to developing and refactoring nonlinear finite-element software.     

基于FLUENT锌液泵内部流场数值模拟

基于FLUENT研究了锌液泵叶片角度与水力效率的关系,并得到叶片最角度位置,对锌液泵性能的改进优化具有良好的指导意义。     

Transient Dynamic Nonlinear Analysis Using MIMD Computer Architectures

This paper presents research on the use of homogeneous parallel and heterogeneous distributed computers for finite-element analysis of transient dynamic problems using a message passing interface. The appropriate computer architectures are discussed, and this review is the basis for the development of a new definition of computational efficiency for heterogeneously distributed finite-element analysis. A code for the transient nonlinear analysis of reinforced concrete plates is profiled. It is demonstrated that although the code is efficient for homogeneous computing systems a new message passing procedure must be developed for heterogeneously distributed systems. A new algorithm is developed and tested on a heterogeneous system of workstations.     

应用微机气相色谱法分析充油电器设备故障

介绍采用微机进行气相色谱分析,对气相色谱仪测量的数据进行数据处理,利用三比值法进行数据分析和判断,进而科学准确地分析变压器等充油电气设备的运行状况,保证充油电气设备的正常运行,取得了良好的效果。