RH真空室插入管喷补车结构与性能分析

RH真空精炼装置的真空室插入管根据情况喷补耐火材料 ,其喷补设备有高架悬挂式与地面台车式两种类型。本文对这两种喷补车的结构和性能进行了分析比较 ,为喷补车的现场使用及设计研究提供了必要的依据     

2000年—2001年磁性功能材料研究和应用新进展

综述了磁性功能材料研究和应用在2000年－2001年间的新进展，其内容包括：（1）自旋电子学；（2）Bi-Fe氧化物的磁性；（3）稀有和稀土金属垂直磁记录材料；（4）新的多层膜磁性材料；（5）磁浮列车。     

蠕墨铸铁在铁道车辆制动系统中的应用研究

在分析车辆制动器摩擦温度场的基础上 ,研究蠕墨铸铁在铁道车辆制动系统中的使用性能 ;研究结果表明 ,在车辆制动器服役条件下 ,摩擦速度与接触压力的提高 ,摩擦副的摩擦系数显著降低 ,磨损率显著增加 ;在所研究的不同石墨形态的铸铁中 ,蠕墨铸铁不但具有低而稳定的磨损率 ,而且具有高而稳定的制动性能 ,是制造车辆制动器部件的合理选材。     

Axial characterization of catalytic activity in close-coupled lightoff and underfloor catalytic converters

A exhaust system consisting of a close-coupled Pd technology 32 in³ lightoff converter and Pt/Rh technology 170 in³ underfloor converter was vehicle-aged for 56000 miles on a vehicle equipped with a 3.8 l engine. Following this aging, the converters were taken off the vehicle and cut into 1″ thick sections along their axis and characterized for lightoff and warmed-up activity using a laboratory reactor to simulate vehicle exhaust. Each section was also analyzed for the quantity of oil additive poisons (phosphorus and zinc) deposited. Following this initial characterization, the phosphorus and zinc deposits were removed, and the sections were characterized again for lightoff and warmed-up activity. This procedure was used to qualitatively determine the relative contribution of oil additive poisoning and thermal sintering to the total activity deterioration as a function of axial position in the catalyst monoliths.

Analysis of the lightoff converter as taken from the vehicle showed a dramatic axial gradient in the lean and stoichiometric lightoff and warmed-up (600°C) performance for HC, CO and NO_x, with most of the deterioration having taken place in the forward-most 1″ section of the converter, which was consistent with the gradient in the deposition of phosphorus (P) and zinc (Zn) in this converter. Comparison of these data sets with those obtained after removal of the P and Zn poisons indicates that most of the total deterioration of lean HC and CO activity can be attributed to P and Zn poisoning of the forwardmost 1″ section. When tested under stoichiometric conditions, most of the deterioration of HC activity is attributable to P and Zn poisoning, while most of the deterioration of CO and NO_x activity is attributable to thermal deterioration. A similar activity and poison deposition gradient was detected in the underfloor converter, but to a smaller extent.     

影响汽车车身磷化因素的探讨

探讨了汽车车身磷化处理工艺在实际生产中的影响因素:主要有磷化液的酸度和温度、磷化促进剂、工件材质和表面状态、磷化前的表面处理、酸洗等。分析了汽车车身磷化的常见缺陷,并给出了防治措施。     

新型高耐蚀车辆保护蜡的研究

研制了一种具有高耐蚀性的车辆保护蜡。分析了该保护蜡的技术要求及难点。给出了保护蜡的配方,介绍了保护蜡的技术指标。该保护蜡主要由有机溶剂、高分子树脂、防锈剂、抗氧剂组成,应用于车辆涂装可以满足厂家和用户的要求。     

Predicting and interpreting identification errors in military vehicle training using multidimensional scaling

We compared methods for predicting and understanding the source of confusion errors during military vehicle identification training. Participants completed training to identify main battle tanks. They also completed card-sorting and similarity-rating tasks to express their mental representation of resemblance across the set of training items. We expected participants to selectively attend to a subset of vehicle features during these tasks, and we hypothesised that we could predict identification confusion errors based on the outcomes of the card-sort and similarity-rating tasks. Based on card-sorting results, we were able to predict about 45% of observed identification confusions. Based on multidimensional scaling of the similarity-rating data, we could predict more than 80% of identification confusions. These methods also enabled us to infer the dimensions receiving significant attention from each participant. This understanding of mental representation may be crucial in creating personalised training that directs attention to features that are critical for accurate identification.

Practitioner Summary: Participants completed military vehicle identification training and testing, along with card-sorting and similarity-rating tasks. The data enabled us to predict up to 84% of identification confusion errors and to understand the mental representation underlying these errors. These methods have potential to improve training and reduce identification errors leading to fratricide.     

黑龙江化肥厂锅炉房用煤车、贮存、运输方案的优化设计

通过对原可行性研究报告中的锅炉房用煤采用筒仓群贮存方案的了解、分析、比较后,提出了采用矩形库贮存煤的优化方案设计的成果。     

飞行器电磁窗耐雨蚀复合涂层的制备

研制了电磁窗用耐雨蚀底漆和耐雨蚀面漆，介绍了该配套涂料体系的制备工艺，并列举了其性能指标。讨论了耐雨蚀面漆中聚酯树脂、多元醇和颜料对其性能的影响，施工工艺对耐雨蚀涂层与底涂层之间配套性能的影响。     

基于MTPM和DPM的多无人机协同广域目标搜索滚动时域决策

传统的协同搜索决策方法在目标引导和机间协同方面存在不足. 研究建立了基于分布概率预测的目标概率图（Target probability map,TPM）初始化方法和基于贝叶斯准则的目标概率图动态更新方法,形成了修正目标概率图（Modified TPM,MTPM）及其运算机理.考虑对任务子区域进行可控回访,定义了数字信息素图（Digital pheromone map,DPM）,建立了数字信息素图使用方法及更新机理.设计了基于MTPM和DPM的寻优指标,建立了基于滚动时域控制的协同搜索决策方法（MTPM-DPM-RHC method,MDR）.仿真表明: 1） MTPM能有效降低对目标的虚警率和漏检率;2） DPM能有效实现对任务区域可控回访;3） MDR方法的遍历能力、重访能力和目标搜索效率均优于已有方法.