应用在地下工程施工中的新技术（Ⅱ）

为有效保护地面上的生态环境，开发利用地下空间资源并营建新世纪的地下水城，在新的21世纪里将会建造更多的地下工程以满足人们生产生活的各种需要。文中介绍了地下工程施工中采用的逆作法、盾构法、新奥法、沉管隧道、顶管工程和大型沉井施工新技术，供同行们参考应用。     

Transformations in machining. Part 1. enhancement of wavelet transformation neural network (WT-NN) combination with a preprocessor

Properly selected transformation methods obtain the most significant characteristics of metal cutting data efficiently and simplify the classification. Wavelet Transformation (WT) and Neural Networks (NN) combination was used to classify the experimental cutting force data of milling operations previously. Preprocessing (PreP) of the approximation coefficients of the WT is proposed just before the classification by using the Adaptive Resonance Theory (ART2) type NNs. Genetic Algorithm (GA) was used to estimate the weights of each coefficient of the PreP. The WT-PreP-NN (ART2) combination worked at lower vigilances by creating only a few meaningful categories without any errors. The WT-NN (ART2) combination could obtain the same error rate only if very high vigilances are used and many categories are allowed.     

基于元胞自动机的股票价格宏观变化的研究

为了研究股票价格在宏观上的变化趋势以及产生这些变化的主要因素.提出了一种新的基于元胞自动机的模型分析股票价格宏观变化,构建了新的股票价格变化规则以及新的股票交易量的变化模型,假设了两大类影响股票价格宏观变化趋势的肉素,同时也细化了股票交易量的函数.模拟了当影响因素都利好,影响因素都利空以及影响因素利好利空交替出现的情况下,股票价格在宏观上的变化情况.仿真结果在一定程度上模拟了股票价格的宏观变化情况和股票价格变化的波动壤集性,说明了假设的两大类因素的合理性以及演化模型的正确性.     

Vehicle Teleoperation Interfaces

Despite advances in autonomy, there will always be a need for human involvement in vehicle teleoperation. In particular, tasks such as exploration, reconnaissance and surveillance will continue to require human supervision, if not guidance and direct control. Thus, it is critical that the operator interface be as efficient and as capable as possible. In this paper, we provide an overview of vehicle teleoperation and present a summary of interfaces currently in use.     

Effects of road surface appearance and low friction warning systems on driver behaviour and confidence in the warning system

Warning systems for slippery road conditions are a potential newcomer among driver support systems. A total of 75 participants drove in a high-fidelity driving simulator on roads with both visible and invisible ice, to investigate to which extent drivers rely on a low friction warning system. Three experimental groups with different versions of a low friction warning system and a control group without warning system were compared. All drivers ranked the systems according to trust. A system displaying recommended speed received the best ratings. Driving speed was analysed for three particular segments of the route. Generally, lowest speeds were achieved with the recommended speed system. The participants drove more slowly on a slippery segment that looked icy than on the segments that looked dry when they did not receive a low friction warning. When they received a warning for low friction they also lowered their speed for the segment looking like asphalt. The results provide guidelines for how to present low friction warnings to drivers. The design has substantial effects on the resulting behaviour and therefore it can have a high impact on traffic safety. So far, not much research on low friction warning systems has been reported.     

水力控制棒驱动系统失压工况的实验研究

利用200MW低温核供热堆水力控制棒驱动系统的1：1实验台架模拟系统失压况，进行控制棒步升，步降，开阀落棒及关泵开阀落棒实验，并与正常工况下的提棒，落棒的实验结果进行比较，实验结果表明：在系统失压工况下，控制棒能正常提棒，落棒系统失压工况下的弹棒，系统压力与压力壳压力具有瞬时跟随特性，未出现控制棒弹棒事故，对实验的失压速率和事故分析得到的失压速率进行了比较，验证了系统具有良好的安全性和可靠性。     

微型互感器在电力测量与保护中的应用

概述了微型互感器的原理与特点，介绍了微型互感器在电流测量、电压测量及微机保护中的应用。     

直驱式电液位置系统PID控制的研究

针对直驱式电液位置系统的特点，使用PID控制改善系统的特性。经过对比分析，采用不完全微分PID控制策略。通过仿真在不同负载下系统对阶跃和斜坡信号的响应，分析结果得出：采用PID控制方法后带载系统响应时间、稳态误差变小，系统刚度增大，减小了负载带来的影响，能够达到控制的需要。     

PUX3无级变速器在浆纱机上的使用

以GA301型浆纱机的恒张力卷绕系统为例,介绍了PUX3无级变速器的主要技术参数和作用原理.针对PUX3无级变速器在浆纱机运转中经常出现的机械故障进行分析,从安装和调整两方面讨论了卷绕张力的精确控制问题.