石灰配合混凝剂处理降低净化后钻井废水的COD值

钻井废水用硫酸铝类净水剂混凝处理后，ＣＯＤ值常不能达标。用ＣａＯ配合净水剂处理钻井废水，在净水剂用量不变以至减少的情况下，在室内和现场都获得了２４小时澄清比上升、净化水ＣＯＤ值下降的良好结果。此方法已在川东钻探公司的井队推广使用。     

基于电力载波通讯的物联网应用研究

物联网作为物联网的重要组成部分,具备巨大市场应用背景,基于电力载波通讯的物联网应用研究在现阶段逐渐引起关注。本文阐述了基于电力载波通讯的物联网应用相关概念,提出了物联网的信息传输可采用电力载波通讯来实现,就其可行性并辅以相关应用案例,进行了研究分析。     

Profit-oriented disassembly-line balancing

As product and material recovery has gained importance, disassembly volumes have increased, justifying construction of disassembly lines similar to assembly lines. Recent research on disassembly lines has focused on complete disassembly. Unlike assembly, the current industry practice involves partial disassembly with profit-maximization or cost-minimization objectives. Another difference between assembly and disassembly is that disassembly involves additional precedence relations among tasks due to processing alternatives or physical restrictions. In this study, we define and solve the profit-oriented partial disassembly-line balancing problem. We first characterize different types of precedence relations in disassembly and propose a new representation scheme that encompasses all these types. We then develop the first mixed integer programming formulation for the partial disassembly-line balancing problem, which simultaneously determines (1) the parts whose demand is to be fulfilled to generate revenue, (2) the tasks that will release the selected parts under task and station costs, (3) the number of stations that will be opened, (4) the cycle time, and (5) the balance of the disassembly line, i.e. the feasible assignment of selected tasks to stations such that various types of precedence relations are satisfied. We propose a lower- and upper-bounding scheme based on linear programming relaxation of the formulation. Computational results show that our approach provides near optimal solutions for small problems and is capable of solving larger problems with up to 320 disassembly tasks in reasonable time.     

X射线衍射线形宽化时点阵参数精确测定的解卷积法

证明了在X射线衍射线形分析中如以标样衍射线形g/(x)的kal峰位为坐标原点O解卷，则解得的宽化函数f/(x)的峰位恰与试样相应衍射线中kal的位置相同。据此，提出一解卷积法。方法是在解卷后将标样的已准确测知kal峰位的Bragg角2θg值加上f(x)的峰位值即得出试样相应衍射线形中kal的准确Bragg角2θh。从而算得试样的精确点阵参数。     

An efficient algorithm for line and polygon clipping

We present an algorithm for clipping a polygon or a line against a convex polygonal window. The algorithm demonstrates the practicality of various ideas from computational geometry. It spendsO(logp) time on each edge of the clipped polygon, wherep is the number of window edges, while the Sutherland-Hodgman algorithm spendsO(p) time per edge. Theoretical and experimental analyses show that the constants involved are small enough to make the algorithm competitive even for windows with four edges. The algorithm enables image-space clipping against windows whose boundaries are convex spline curves. The paper contains detailed pseudo-code implementation of the algorithm and an adaptation of the simulation of simplicity method for handling degenerate cases.     

Fuzzy assembly line balancing using genetic algorithms

In this paper, we implement genetic algorithms to synthesis fuzzy assembly line balancing problem which is well-known as a NP-hard problem. The genetic operators concerned with the feasibility of chromosomes will be discussed, and its performance will be shown with a numerical example.     

关于同轴线最佳尺寸比的讨论

本文对国内外微波技术书籍中公认的同轴线最佳尺寸比提出了异议,并给出了电特性更好的新的最佳尺寸比值。     

PET系统空间线性度的质控测量

运用自制的单线源和多线源，对ＰＥＴ的线性度进行了三维方向的测量，测量中采用了求线分布函数ＬＳＦ峰位相对理想直线偏差的方法，为提高测量精度，对有关函数的峰位进行了三次样条函数插值校正，测量结果较为理想，误差均小于百分之一。     

地图等高线矢量化的图像处理

本文对１：５万的地图等高线的矢量化的问题进行了研究，它包括对图像的二值化，线细化，在移通信和军事上都有重要的意义。     

线,面对空间回转轴线平行度的测量

本文介绍一种线、面对空间回转轴线平行度的测量方法，并进行了误差分析。