系统功能语言学语境论下的汉英翻译分析

语境是系统功能语言学里面的一个重要概念,语境论下语言的意思表示有言内之意与言外之意两种。语境论的核心是探索有效理解原语作者真实意思的途径并为翻译服务。按照系统功能语言学对语境的分类,分别从语言的上下文语境、情景语境和文化语境等三个方面介绍了语境论之于翻译的作用,并试图寻找有效的翻译策略。     

Forecasting journey time distribution with consideration to abnormal traffic conditions

Travel time is an important index for managers to evaluate the performance of transportation systems and an intuitive measure for travelers to choose routes and departure times. An important part of the literature focuses on predicting instantaneous travel time under recurrent traffic conditions to disseminate traffic information. However, accurate travel time prediction is important for assessing the effects of abnormal traffic conditions and helping travelers make reliable travel decisions under such conditions. This study proposes an online travel time prediction model with emphasis on capturing the effects of anomalies. The model divides a path into short links. A Functional Principal Component Analysis (FPCA) framework is adopted to forecast link travel times based on historical data and real-time measurements. Furthermore, a probabilistic nested delay operator is used to calculate path travel time distributions. To ensure that the algorithm is fast enough for online applications, parallel computation architecture is introduced to overcome the computational burden of the FPCA. Finally, a rolling horizon structure is applied to online travel time prediction. Empirical results for Guangzhou Airport Expressway indicate that the proposed method can capture an abrupt change in traffic state and provide a promising and reliable travel time prediction at both the link and path levels. In the case where the original FPCA is modified for parallelization, accuracy and computational effort are evaluated and compared with those of the sequential algorithm. The proposed algorithm is found to require only a piece rather than a large set of traffic incident records.     

基于SOA的减速顶综合信息管理系统的研究与设计

本文介绍了一种减速顶综合管理信息系统,主要是从理论角度对应用计算机管理减速顶的“用、管、修”工作进行探讨,结合编组站现车管理系统,从数据处理的实时性、信息传递的网络性出发,并结合实际运用给出功能框架设计和概要设计方案。     

A model for evaluating the environmental and functional benefits of “innovative” roundabouts

This study looks at the singling out of a multi-parameter criterion for choosing conventional or innovative roundabout layouts, by taking functional, environmental and economic aspects into consideration. The performances of three conventional roundabouts (with different lane number at entries and through the ring), turbo-roundabouts and roundabouts with right-turn bypass lane on all the arms (flower roundabouts) have been compared in terms of vehicle delays and pollutant (carbon dioxide, nitrogen oxides, particle pollution (PM₁₀ and PM_2.5)) emissions. By means of closed-form capacity models and with the help of COPERT IV^© software, several traffic simulations have been carried out, referred to yearly peak flow values Q_max and ranging between 1300 and 3300 veh/h, starting from a typical annual traffic demand curve in urban areas. The estimation of cumulative vehicle delays and annual pollutant emissions, together with construction and maintenance costs has allowed working out overall costs for each roundabout under consideration, depending on the traffic demand. Thus, the proposed model allows finding the most cost-effective geometric solution as to overall costs for a comprehensive case record of traffic values.     

中外商务新闻语篇功能的比较分析

韩礼德的系统功能语法为语篇分析提供了理论指导和操作模式,本文从<中国日报>和美国<商业周刊>上选取两篇商业新闻,从语言层面和非语言层面进行了功能语篇分析,指出了商务新闻语篇的特点和中外商务新闻语篇的异同,并对国内商务英语写作教学提出了建议.     

Aircraft trajectory forecasting using local functional regression in Sobolev space

This paper considers the problem of short to mid-term aircraft trajectory prediction, that is, the estimation of where an aircraft will be located over a 10–30 min time horizon. Such a problem is central in decision support tools, especially in conflict detection and resolution algorithms. It also appears when an air traffic controller observes traffic on the radar screen and tries to identify convergent aircraft, which may be in conflict in the near future. An innovative approach for aircraft trajectory prediction is presented in this paper. This approach is based on local linear functional regression that considers data preprocessing, localizing and solving linear regression using wavelet decomposition. This algorithm takes into account only past radar tracks, and does not use any physical or aeronautical parameters. This approach has been successfully applied to aircraft trajectories between several airports on the data set that is one year air traffic over France. The method is intrinsic and independent from airspace structure.     

船用隐极无刷发电机混合通风和温度场仿真计算研究

该文针对船用隐极发电机混合通风风路的结构。建立多元二次非线性回路压降方程组,引入函数风阻使之降幂成为多元一次非线性方程组,以解算出各等效风路的空气流量;引入气体热流,构造非线性节点热流方程组,以解算出求解域中各节点的温度。     

对我国高速铁路综合调度系统的思考

根据高速铁路的一般特点和对综合调度系统的要求,结合我国高速铁路运输特点,提出我国高速铁路综合调度系统的功能,C S结构,中心设备和车站设备的配置思考意见,建议对该系统的研制应充分考虑中国铁路高、中速列车混合运行和既有线路、枢纽现状的特点,满足中国铁路在列车运行计划、行车调度、车辆调度、供电调度、综合维修调度、安全监控调度和旅客服务的七大功能要求,满足高速铁路可用性、安全性要求。     

西宝客运专线铁路宝鸡南站站房设计

结合历史地域文化,从城市文脉的角度出发对宝鸡南站站房进行建筑创作,根据地形地貌的特点设计车站、广场、城市的空间接驳;创造性地引入"全程模数化设计"理念进行建筑细部推敲;以安全、舒适、经济、可行性高为原则进行消防性能化研究及建筑、结构、水、暖、电等各相关专业的设计。宝鸡南站建成后成为了交通便捷的宝鸡市地标性建筑。     

基于GSM-R的机车信号远程动态监测系统

介绍了基于GSM-R的机车信号远程动态监测系统的组网结构、通信原理、技术特点.并对承栽机车信号远程动态监测的GPRS网络进行了网络功能分析,提出了具体网络设置、维护方面的建议.