氧化铝赤泥处置方式浅谈

介绍了氧化铝厂生产过程中，赤泥产生量、赤泥成份及目前赤泥的堆放和利用方式，提出了先对赤泥中的稀土成份进行回收，再将赤泥进行整体利用，是控制赤泥对地下水环境的碱污染和防止赤泥堆放占用大量土地的最佳措施。     

包钢工业水资源调查初探

针对包钢工业水资源的利用现状和发展趋势,进行调查与研究,提出了对策和管理控制方案.为企业的技术改造、污染治理、综合利用指出方向,为区域的环境管理、规划、科研、监测等方面提供科学依据和丰富的信息.     

三容器液位系统Smith预估器设计及其仿真

三容器液位控制系统具有典型的滞后特性,用常规的PID控制难以达到精确的控制效果.本文首先给出了该系统的数学模型, 并应用Smith预估补偿算法进行控制,最后在C Builder中进行了仿真.仿真结果表明Smith预估补偿控制与常规的PID控制相比,具有调节时间短、超调量小、鲁棒性好等优点.     

Sensitivity analysis of distributed parameter elements in high-speed circuit networks

This paper presents an analysis method, based on MacCormack＇s technique, for the evaluation of the time domain sensitivity of distributed parameter elements in high-speed circuit networks. Sensitivities can be calculated from electrical and physical parameters of the distributed parameter elements. The proposed method is a direct numerical method of time-space discretization and does not require complicated mathematical deductive process. Therefore, it is very convenient to program this method. It can be applied to sensitivity analysis of general transmission lines in linear or nonlinear circuit networks. The proposed method is second-order-accurate. Numerical experiment is presented to demonstrate its accuracy and efficiency.     

基于PDE的一致增强性扩散方法研究及其应用

针对具有线性纹理特征的图像,对基于偏微分方程的一致增强性扩散去噪方法进行了研究,详细分析了它的扩散去噪过程和纹理结构的保护及增强,设计出具体的算法步骤.在此基础上,针对线性结构图像序列,给出了三维一致增强性扩散模型.在选择合适的扩散参数情况下,一致增强性扩散算法不但使具有线性结构图像的信噪比有明显的提高,而且可以很好的保护和增强线性结构,具有广泛的应用领域.     

走径相同的送电线路档中风偏放电故障分析

通过一起山区不同电压等级平行线路风偏放电的分析,提出今后选线、测量及定位施工中应考虑的因素,供山区送电线路设计、施工及运行人员参考。     

Reliability-based performance indicator for a manufacturing network with multiple production lines in parallel

This paper addresses the system reliability evaluation for a manufacturing system with multiple production lines in parallel, where the system reliability is the possibility that a manufacturing system can satisfy demand. In the manufacturing system, the capacity of each machine is stochastic (i.e., multi-state) due to failure, partial failure, or maintenance. Thus, the manufacturing system can be constructed as a manufacturing network in terms of stochastic-flow network model. With considering reworking actions, we propose a graphical-based methodology to transform the manufacturing system into a manufacturing network. Thereafter, the manufacturing network is decomposed into general manufacturing paths and reworking paths. A simple algorithm is subsequently developed to generate the minimal capacity vectors that machines should provide to satisfy demand. The system reliability is derived in terms of such capacity vectors afterwards.     

Design of flexible transfer lines: A case-based reconfiguration cost assessment

Shortening product life cycles leads competing companies to continually release new products or modifying the existing ones; this is one of the major issues in production systems design. According to the changes in product features, production systems need to be properly configured or reconfigured to efficiently tackle new production requirements. A configuration approach for multi-product flexible transfer lines is presented which aims at minimizing the equipment cost. The approach is applied to a manufacturing case in the automotive sector. The robustness of the solution is tested against changes that affect the products to highlight reconfiguration costs and the penalty associated to the lack of a pro-active configuration approach.     

基于SPAD值的植被“红边位置”确定方法探讨

以茶树、杨梅树和樟树为研究对象,每种树分3个部位随机采集50个叶片,应用线性内插方法、倒高斯方法、有理函数方法和拉格朗日等4种红边位置估算方法,分别计算了相关叶片的红边位置。同时将3种树叶的SPAD(叶绿素)值分别按照数值大小、树叶在树上的不同生长位置等为基数组成区间,再按照区间数据的不同组合共计分为25个区间段,然后运用SPSS软件,按照不同分划区间将红边位置与树叶的SPAD值进行双变量相关分析与计算。其结果表明无论怎样划分区间,依据SPAD值的红边位置以线性内插方法的吻合度最高,有理函数方法次之。     

机载倾斜摄影数据在三维建模及单斜片测量中的应用

机载倾斜摄影测量系统是对常规摄影测量系统的改进和发展,它能够获取常规摄影无法得到的地物立面的纹理信息和几何信息,在数字城市构建中具有重要的意义.本文利用机载倾斜摄影数据进行了三维建模和单斜片测量的应用研究与实验,初步实验表明,倾斜摄影数据应用于三维建模单斜片测量是可行的,具有较好的应用前景.