面向驾驶员辅助系统的换道意图辨识方法研究

为提高先进驾驶员辅助系统工作效能,通过差异性分析选取了人-车-路特征参数,建立了支持向量机换道意图辨识模型.基于驾驶模拟器采集的数据,运用ROC曲线对比分析了不同参数组合、时窗、数据表达形式下模型的分类效果,结果表明以方向盘转角、加速度、车辆距车道线距离和驾驶人头动信息为特征参数,时窗为1.5s,以时窗内信息均值和方差表述特征参量可获得最优辨识效果.研究表明,模型在保证1 s前瞻性的同时辨识率可达93％.     

Global environmental assessments: Impact mechanisms

Many impacts of Global Environmental Assessment (GEA) processes on policy processes, and the mechanisms underlying these impacts, remain underappreciated. In this research, we focus on the 5th Global Environment Outlook and the Working Group III contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Based on the perception of GEA process participants, we describe the mechanisms through which assessments create or alter interpersonal interactions which can affect the dissemination of ideas. In particular, we find that GEAs can contribute to framing international coordinative discourses in intergovernmental negotiations. This can be achieved by widening, improving and/or maintaining the active participation of policy actors in the discussions of global environmental risks and by creating the scientific foundations for intergovernmental negotiations. GEAs can also contribute to national coordinative discourses by facilitating reflexive learning amongst participants, empowering them to diffuse and translate global information, and by providing methodological guidance. They can contribute to national communicative discourses by reviving interest and awareness of the urgency to address environmental problems. In this way they provide powerful arguments for governmental societal actors to challenge or strengthen existing national coordinative discourses. Finally, GEAs can improve scientific discourses worldwide by enhancing the capacity of individual researchers to produce and communicate relevant research insights. This is achieved by participating in a learning exercise with an extended community of peers and policy actors. This article is part of a special issue on solution-oriented global environmental assessments.     

电除尘在烧结机尾使用中的几个问题

对烧结机机尾电除尘器在使用过程中经常出现的几种故障进行分析,并提出相应的解决方法。     

Model-based direct search optimization of the broke recirculation system in a newsprint mill

This work is concerned with the dynamic modelling of the papermaking section of an integrated newsprint mill, and the subsequent application of two direct search methods in a proof-of-concept optimization study of broke recirculation strategies. The effect of the current broke recirculation policy on the mixed pulp properties at the paper machine headboxes was quantified using a dynamic simulation generating data for an objective function which reflected the rate of change in measurable (flow, consistency and temperature) and immeasurable (total dissolved solids and fibre length distribution) parameters. Genetic Algorithm and the Nelder–Mead simplex methods were then linked dynamically to the simulation and used to find improved ways of recirculating broke pulp. Specifically, the profile of the changes to the broke ratio was modelled using a quadratic function and a second-order transfer function, and the coefficients of these functions were optimized. The optimized broke recirculation resulted in a significant reduction in the value of the objective function, thus, suggesting that the fluctuations in the properties of the mixed pulp stream could be dampened and paper machine headbox stability improved. It is expected that this process enhancement strategy would contribute to an increase in production yield (via a reduction in the occurrence of paper machine breaks), and thus an overall reduction in the waste of materials and energy.     

太铜热连轧水处理泥系列改造新工艺

新工艺引入"一机两用"和"以废治废"的思想进行系统改造,实现改造后污泥处理系统的良性循环,根除了污泥外排的局面,降低了成本,节约了费用,创造了良好的社会效益和环境效益.     

离心分离技术在重污油处理中的应用

介绍三相分离卧螺离心机工作原理和重污油处理工艺，简述开工过程出现的问题和采取的措施。通过对处理前后重污油质量指标对比，说明离心分离对重污油有良好的处理效果。     

基于支持向量机回归和小波变换的O3预报方法

使用南京工业区2016年6月1日~8月15日的臭氧（O₃）、O₃前体物及常规气象数据，结合多元线性回归（MLR）方法和小波变换（WT）改进支持向量机回归（SVR）对O₃小时浓度的预报精度.结果表明，通过WT方法将一个高变异性的序列转化为多个低变异性的序列后再处理可提高预报精度，M-WT-SVR预报的决定系数（R²）达到0.90，平均绝对误差（MAE）、平均绝对百分误差（MAPE）和均方根误差（RMSE）分别为3.86×10^-9、28.26%和5.57×10^-9，优于M-SVR和SVR.低层细节序列主要与NO、NO₂和芳香烃有关，而更高层的近似序列受到气象条件、前体物和O₃前期浓度共同影响.与经典的MLR方法相比，M-WT-SVR对O₃小时浓度的预报有明显优势.     

放射性污染防治对策与建议

根据2001年浙江省放射性申报登记试点城市－－嘉兴市的申报登记结果，在分析该市的放射性污染控制现状和管理现状的基础上，结合该市的实际情况，对放射性污染管理防治工作中存在的问题和薄弱环节，有针对性地提出嘉兴市放射性污染防治对策与建议，供有关部门参考。     

反求工程及其在Pro/E中的应用

介绍了反求工程的定义和方法,论述了Pro/E软件系统在反求工程设计中的应用,重点讨论了模型的建立、曲面光顺、曲面连接等技术,并举例说明了反求工程的应用,为反求新技术项目的推广应用提供理论依据和设计方法.     

计算机控制四轨迹系列摆辗机研制

介绍了BY型计算机控制四轨迹摆辗机的设计特点、结构及制造、调试情况。