一种新的环网故障诊断与重构算法

为提高环网的容错性能，文献（1）提出了一种基于事件驱动的故障重构算法，其缺点是该算法只能容忍连线故障。本文给出一种新的采用时钟起时驱动的重构算法，该算法既能容忍连线故障也能容忍站（或节点）故障，且令牌控制较文献（1）的简单。     

微机控制托辊管筒加工机床的设计

介绍了一种生产效率高、加工质量稳定、利用单片机控制液压传动系列带式输送机托辊管筒自动加工机床的设计过程。     

旧工业建筑的再利用

旧工业建筑与其他旧建筑物相比,具有建筑主体结构坚固,空间高大灵活;体量大,拆除或新建对环境造成的影响大;具有其独特的设计理念和美学价值等特点,从而成为旧建筑再利用过程中一种重要的建筑类型。 本文通过对101厂房再利用案例设计过程的分析,对旧工业建筑再利用的目标、更新程序、方式、策略等方面进行具有可操作性和推广性的探索。     

A visual tool for computer supported learning: The robot motion planning example

We introduce an effective computer aided learning visual tool (CALVT) to teach graph-based applications. We present the robot motion planning problem as an example of such applications. The proposed tool can be used to simulate and/or further to implement practical systems in different areas of computer science such as graphics, computational geometry, robotics and networking. In the robot motion planning example, CALVT enables users to setup the working environment by creating obstacles and a robot of different shapes, specifying starting and goal positions, and setting other path or environment parameters from a user-friendly interface. The path planning system involves several phases. Each of these modules is complex and therefore we provide the possibility of visualizing graphically the output of each phase. Based on our experience, this tool has been an effective one in classroom teaching. It not only cuts down, significantly, on the instructor’s time and effort but also motivates senior/graduate students to pursue work in this specific area of research.     

现代工业产品的造型设计

在寻求人-产品-环境的和谐统一与协调中,把工程技术与艺术、科学与美学、实用与美观等诸方面有机统一于现代工业产品造型设计中,使产品更具有市场竞争力.     

浅谈计算机局域网病毒及防范策略

简述了计算机局域网的病毒的类型,并提出了相应的防范策略。     

某跨线桥施工支架方案设计

结合某大桥的概况,根据梁体施工工艺要求、现场实地勘察情况确定跨线施工方案,支架采用布架灵活、搭拆方便、承载力大的WDJ碗扣式多功能钢支架,部分预应力现浇连续箱梁采用支墩加纵梁预留门洞的支架现浇,取得良好效果。     

Butyltin Species and Inorganic Tin in Water and Sediment of the Detroit and St. Clair Rivers

Water and sediment samples from 29 locations in the Detroit and St. Clair rivers were analyzed for the highly toxic tri-n-butyltin (Bu₃Sn⁺) species and for the less toxic di-n-butyltin (Bu₂Sn²⁺) and n-butyltin (BuSn³⁺) species and inorganic tin. In general, locations sampled in the St. Clair River were less contaminated with butyltin species than those in the Detroit River. Inorganic tin and BuSn³⁺ were detected in over 90% of all subsurface water samples, while Bu₂Sn²⁺ and Bu₃Sn⁺ were detected in 45 and 28% of the same samples, respectively. The highest concentration ofBu₃Sn⁺ in subsurface water, 5.9 × 10^?10 mol Sn/L, was at the mouth of the Ecorse River, a tributary of the Detroit River. The three butyltin species and inorganic tin were also detected in 23–46% of all sediment samples. The highest concentrations of Bu₃Sn⁺ in sediment were found close to the mouths of the River Rouge, another tributary of the Detroit River, and the Ecorse River, and were 6.2 × I0^–7 and 1.7 × I0^–7 mol Sn/kg dry weight, respectively, for the top 2 cm of sediment.     

多掺炼新疆渣油的催化裂化工业生产技术

兰州石化公司以加工新疆原油为主，重油收率高，平均在37％左右，所生产的重油主要靠催化裂化装置来加工，多余部分以低附加值重油出厂。随着涩宁兰天然气工程的逐渐建成，低附加值重油出厂将受到严重威胁，因此，催化裂化装置加工重油显得尤为重要。兰州石化公司炼油厂1.2Mt/a重催装置通过采用先进技术进行改造，使重油掺炼比由41.52%提高到52.20%，提高了10.68个百分点，年多加工重油14.95万t，产品收率达到79.20%以上，能够灵活调节产品结构，创造了良好的经济效益。