Open Contours Extraction of Rotational Surface Oriented to Layer Measurement

With layer-measured contours, an algorithm that can extract the contour segments from a rotational surface is presented. The extraction can be divided into two stages, i. e. the rough segmentation and the refinement. In the rough segmenting stage, an optimal contour matching method is put forward to find similar contour segment from another closed contour with respect to the seed contour. In the refining stage, an iterative way that can extract a circular arc precisely is presented based on parameters identification and contour-ends expanding/shrinking operation. The algorithm can extract the open contour segments from a rotational surface precisely, as demonstrated in the examples. Based on the work of this paper, further research, such as parameter identification of 3 - D surface and CAD model creation, can be conducted.     

Ordinary Toxicity of Chlorine Dioxide and By-products Chlorite and Chlorate in Water

Acute toxicity and accumulated toxicity of chlorine dioxide (ClO2) and by-products chlorite (ClO2-) and chlorate (ClO3-) in water acted on mice are studied by the method of Horn and accumulation coefficient. Subchronic toxicity of the mixture of ClO2 and ClO2-and ClO3- in water acted on rat is studied though feeding test for 90 days, including statistical analysis of variance on weight gaining, food utilization efficiency,index of blood and serum,liver (or kidney) to body weight ratio, and histopathological examination on liver and kidney. The results show that aqueous solution of ClO2, NaClO2 and NaClO3 ( with the concentration of 276.5 mg/L, 200 mg/L and 200 mg/L respectively) and the mixed aqueous solution of ClO2 with the concentration of 553 mg/L are actually non-poisonous , and non-cumulative aqueous solution as well.     

Novel Hyper-Redundant Manipulator-. Design, Study and Experiment

A novel hyper-redundant manipulator named RT1 is designed and studied. The unique feature of RT1 is all degrees of freedom (DOF) are actuated with only one motor via special designed hinge bar universal joints. The mechanisms of RT1 are introduced in detail. Some experiments are carried out in order to test the movability and adaptability of the manipulator. RT1 is actuated by pulse string and acts discretely. The discrete working space of RT1 is described and the parameter optimization for kinematical redundancy resolution is studied also. The optimization criterion is altering the design parameter as little as possible during manipulator's motion from the initial position to the expected position. An optimization example is given that is realized with Matlab optimize tool-box.     

地基液化的处理措施

砂土地基在地震动荷载作用下会发生液化，使地基丧失承载力，建筑物产生大量不均匀沉降，造成建筑物开裂、倾斜或破坏，国家财产和人民生命遭受损失。通过分析液化的形成条件及本身特性，提出了在设计中全部消除地基波化沉陷，部分消除地基液化沉陷和减轻液化影响的措施。     

城市污水厂剩余活性污泥农用价值分析

分析了目前国内外污水污泥处置、利用、管理的现状和发展趋势，通过对城市污水处理厂剩余活性污泥成分、利用风险以及污泥农用市场的分析，综合评价了经过无害化、稳定化处置后剩余污泥的农用价值。     

演绎数据库虚关系的内部表示

介绍了演绎数据库的系统结构，并着重介绍了基于SQL Serverr之上的递归查询算法和将以规则形式存放于外存的虚关系转化为内部表示的过程。     

陕西凤县八卦庙金矿流体包裹体的成分特征

对赋存于南秦岭泥盆系浅变质碎屑岩中的陕西凤县八卦庙金矿主成矿阶段的石英中流体包裹体进行研究，发现八卦庙金矿成矿流体盐度变化较大，从中等偏低盐度到富含子矿物的高盐度流体包裹体均有分布，通过光学显微镜，EPMA、SEM/EDS观察发现子矿物主要为黄铁矿，石盐及一些成分复杂的子矿物，LRM分析流体包裹体成分以富含CO2为特征，除此之外还检出了CO，CO2，CH4，H2S，C2H4等，表明矿床成矿流体具有相对还原的复杂物理化学条件，不同于一般的热液金矿床。     

热作模具钢连轧过程力学参数的有限元分析

采用三维热力耦合弹塑性有限元软件及其接触分析技术，在准确制定相关边界条件基础上对Φ200mm规格的热作模具钢二机架热连轧过程的金属三维流动进行了有限元模拟，准确地计算了力学参数（如轧制力和力矩）的分布情况并对轧辊强度进行了分析，从中确定了安全可行的轧制方案。     

模糊控制在机器人柔顺装配中的应用

提出了一种模糊柔顺的控制方法来控制机器人的装配作业，本方法不需要装配作业的模型参数，省去了大量的计算，并且在控制过程中不需要引入受力信息的变化量，实验证明，这种方法实用性强，实时性好。     

用简单动态递归网构造固体散料流量模型

提出了用简单动态递归网来建立固体散料流量模型，针对动态递归网结构复杂，训练算法收敛速度慢的缺点，采用一种结构十分简单的递归网，对RPE算法进行了改进和补充，使之适用于简单递归网，用来对网络的权值和阈值进行调整，建模结果表明此方法收敛速度快，精度高。