反舰导弹作战使用中的搜捕研究

通过对导弹雷达末制导技术以及末制导雷达搜捕方式的研究,强调了搜捕方式对反舰导弹作战使用的重大影响,对反舰导弹雷达末制导技术以及搜捕方式的发展进行了探讨。     

大虎山至齐齐哈尔铁路增二线通辽枢纽作业分工探讨

针对通辽枢纽既有作业分工存在的问题 ,分析原因并提出新的作业分工方案。     

Robust identification of air traffic flow patterns in Metroplex terminal areas under demand uncertainty

Multi-Airport Systems (MAS), or Metroplexes, serve air traffic demand in cities with two or more airports. Due to the spatial proximity and operational interdependency of the airports, Metroplex airspaces are characterized by high complexity, and current system structures fail to provide satisfactory utilization of the available airspace resources. In order to support system-level design and management towards increased operational efficiency in such systems, an accurate depiction of major demand patterns is a prerequisite. This paper proposes a framework for the robust identification of significant air traffic flow patterns in Metroplex systems, which is aligned with the dynamic route service policy for the effective management of Metroplex operations. We first characterize deterministic demand through a spatio-temporal clustering algorithm that takes into account changes in the traffic flows over the planning horizon. Then, in order to handle uncertainties in the demand, a Distributionally Robust Optimization (DRO) approach is proposed, which takes into account demand variations and prediction errors in a robust way to ensure the reliability of the demand identification. The DRO-based approach is applied on pre-tactical (i.e. one-day planning) as well as operational levels (i.e. 2-h rolling horizon). The framework is applied to Time Based Flow Management (TBFM) data from the New York Metroplex. The framework and results are validated by Subject Matter Experts (SMEs).     

日照港矿石码头机械取制样设施工艺设计

本文以日照港矿石码头机械取制样设施为例,阐述了铁矿石机械取制样的主要流程和设备配置,该工艺经反复优化,具有集成度高、技术先进、适用性强的特点,可供其它同类工程的设计参考借鉴。     

基于智能车载终端的公交事件应急响应系统设计

提出公交事件管理的含义、目的和目标,介绍了车载智能终端以及公交事件的检测方法。针对公交运行中出现的交通事故,车辆故障,道路交通拥堵,客流突变等紧急事件,提出了相应的应急方案。从而保证公交车辆的正常运行,使公交车辆运行达到安全、迅速、经济、舒适的目的。     

武汉铁路枢纽建设施工组织计划

武汉铁路枢纽地处京广通道和沪汉蓉沿江经济带的交叉点,是铁路快速路网中心之一,衔接五个方向的铁路大型枢纽。为解决武汉铁路枢纽内过江通道能力不足、客运系统现状不能适应京广客运专线和沪汉蓉快速通道引入、解编能力不足的矛盾“,十一五”期间,武汉铁路枢纽有八大工程相继开工建设,各建设项目相互交错,工期相互影响。为使各建设项目协调进行,制定全面的施工组织计划,分析控制枢纽施工的各种因素,抓住重点控制工程,是确保武汉铁路枢纽按时建成通车的关键。     

Evaluating Locations for Intermodal Transport Terminals

Abstract

The choice of location for an intermodal transport terminal is an important component in a regional logistics system and a paramount decision for the investor as well as the community affected. The investor needs a realistic estimation of traffic potentials and incorporated cost-estimates of a location, since it serves as an important input to the investment decision process. Policy makers need instruments and tools to analyse the effect of intermodal terminals on the surrounding environment, which also enables a comparison between several possible locations in order to ensure sustainability and long-term competitiveness. The model in this paper allows a comparative evaluation of a set of possible intermodal terminal locations based on considerations by relevant actors. Furthermore, it presents a process of retrieving data and effectively communicating results. Considerations and interests of stakeholders are incorporated into the approach by means of evaluative criteria. The approach aims at facilitating the planning process of regional logistics systems in general and the evaluation process of intermodal terminal locations in particular by considering both public and private interests focusing on economic and environmental aspects.     

船舶大型化对航运和港口的影响

目前订造中的7 500 TEU以上的船舶有100多艘。其中许多船舶将于2007年下水,投入亚洲-欧洲和跨太平洋贸易航线的营运。“超级集装箱船”(VLCS)正在坚定地从概念走向现实。超过8 000TEU的船舶的投入使用,对班轮公司、航运贸易和集装箱码头提出了新的挑战。班轮公司应该通过削减一组环线中的船舶数目、改变挂靠港和重新组织航运网络的规划途径来应对挑战。先进枢纽港应该通过开发新概念的港口装卸系统和新概念码头来应对挑战。超大型集装箱船舶挂靠的港口不能仅仅是简单的枢纽港,同时必须成为物流平台。     

关于地铁中漏泄同轴电缆的选择、配置和建议

简要介绍了漏泄同轴电缆的原理和基本性能,提出了以提高接收电平作勾选择和配置漏泄同轴电缆基本要求的计算方法,并举出了实例,还提出了建议。     

接触线及承力索终锚线夹的改进探讨

通过对传统使用的GLCN250接触线终锚线夹及接头线夹、LBGLJ185终锚线夹及接头线夹存在问题的探讨,对终锚线夹提出了减小楔子的锥度,在楔子内表面加工内螺纹,加宽空心楔子开槽宽度等改进措施。