合肥发电厂SG420t/h自然循环锅炉降低排烟温度的研究

通过大修前锅炉热力试验,量化分析影响锅炉排烟温度的因素及程度,在大修中实施制粉系统堵漏、炉膛堵漏、空预器传热元件更换等技术措施,在运行中采取制粉系统钢球磨进口微负压、炉膛微负压等运行方式,是降低排烟温度的有效措施.文章同时指出,彻底消除制粉系统漏冷风以及解决空预器X比、烟气侧效率、空气侧阻力、烟气侧阻力、空预器出口热风温度达不到设计值和锅炉受热面积灰问题,是今后进一步降低#3锅炉排烟温度的努力方向.     

一体化钢铁生产计划系统的研究现状与展望

以钢铁企业生产的背景,叙述了一体化管理在企业管理中的地位,进而综述了钢铁生产工序管理和生产计划理论方法发展趋势,特别指出了生产计划是MES的核心功能,战略管理一体化,多工序一体化和生产计划综合集成方法是今后发展的主要趋势。一体化生产计划应用效果显著,但必须兼顾“目标,管理、技术”三方面问题,研究开发才有成效。     

A framework for execution monitoring in icon

Execution monitors are widely used during software development for tasks that require an understanding of program behavior, such as debugging and profiling. The Icon programming language has been enhanced with a framework that supports execution monitoring. Under the enhanced translator and interpreter, neither source modification nor any special compiler command-line option is required in order to monitor an Icon program. Execution monitors are written in the source language, instead of the implementation language. Performance, portability, and detailed access to the monitored program's state are achieved using a coroutine model and dynamic loading rather than the separate-process model employed by many conventional monitoring systems.     

Inaccuracies in program profilers

Run-time program profiling is a valuable tool in understanding software efficiency. Techniques for obtaining profiles make assumptions that may result in misleading data. In the paper we illustrate flaws in two profiling systems: the Unix ‘Gprof’ family (including the packages ‘monitor’, ‘prof’ and ‘profil’), and the TI Explorer metering package for Lisp.     

Microcomputer comparison

This paper illustrates a precise method for comparing microcomputer instruction sets for the purpose of language implementation. The standard of comparison is the Concurrent Pascal interpreter for the PDP 11/45 minicomputer. The paper identifies the most frequent virtual instructions and their implementation on the PDP 11/45 computer. It then compares the speed and size of interpreters implemented on various 16-bit microcomputers. It also includes the process switching times of these computers.     

Steps to an efficient program for floating-point summation

This paper shows how helpful a tool for stepwise improvement of programs an execution profiler is. As a demonstration we develop an efficient program for getting the sum of n addends by using Huffman's algorithm. Rewriting an old version of a program step by step, using as a guide information about its dynamic behaviour obtained by the profiler, we finally get an efficient program whose CPU time is reduced to about 1/20 of the first version's for n = 200.     

30000m~3/h制氧机污氮的开发利用

介绍了武钢氧气有限责任公司为了解决氮气供应不足 ,对污氮的开发利用及改造实施。     

UML—RT到一个实时多任务执行模型的转换

为解决把UML-RT行为建模模型平滑过渡到实时多任务系统的图形化软构件设计开发环境的过程设计模型中，本文提出了把UML-RT状态图行为模型转换到该环境下的执行模型的方法。首先介绍UML-RT状态图建模的概念及笔者研制的设计环境，其次给出从UML-RT状态图转换到该设计环境可执行模型的具体方法，最后以一个实例说明了转换方法。     

主动网络中的节点资源管理

主动网络由于允许用户将主动应用插入主动节点运行,因而比传统的被动网络需要更多的资源。为了保证资源的共享和资源访问的安全性,对这些资源必须进行合理的分配、监视和管理。该文在分析主动网络与被动网络中资源管理差别的基础上,提出了主动节点资源管理方案,并在原型系统中实现了该方案。     

高性能Pentium处理器的结构特征

介绍了以Pentium Pro微处理器为核心的高性能微处理器的体系结构特征，以及在多媒体，网络通信，并行计算等方面表现出的优异性能。