船舶设备管控一体化系统结构及其实现方法

将船舶设备管理和船舶设备运行参数有机地结合起来，实现船舶设备管控一体化，对提高船舶设备管理效率和水平，提高船舶设备运行的安全性有重要的意义。通过对总线方式下的分布式控制系统结构、底层数据采集、高端管理软件等方面的研究，提出了船舶设备实现管控一体化的系统的一般结构以及实施过程中的几个关键性技术问题的解决方法，并以船舶电站为例介绍了管控一体化技术的实施情况。将管控一体化概念引入到船舶设备管理，提出一系列解决方法，具有一定的创新性。     

曹妃甸港“公转铁”发展策略探讨

曹妃甸港作为毗邻京津冀城市群的北方大港,是响应国家“公转铁”的重要支点。在阐述曹妃甸港集疏运系统布局及集疏运方式的基础上,针对曹妃甸港集疏运存在的问题,从大力发展集装箱运输、推动物流信息平台建设、提升作业效率及能力、打造曹妃甸疏港矿粉“公转铁”等方面,提出曹妃甸港“公转铁”发展策略,促进曹妃甸港铁路发挥全要素生产力,合理配置运输资源,加快推进曹妃甸港“公转铁”物流体系建设,提高铁路货运服务能力和供给质量。     

基于GIS的通信线路资源管理系统的研究

根据北京铁通的通信网规划、维护和管理的实际要求,利用MapX开发北京铁通通信线路资源管理系统。研究了开发设计过程中的坐标变换、MapX路径规划、点线自动匹配等问题。提高了系统的效率、性能和精确度。     

应用"四全管理"原理,提升航海职业教育质量

介绍“四全管理”原理,针对当前航海职业教育管理存在的缺陷,提出一些解决策略,提升教育质量。     

普速铁路雨量监测系统工程设计方案研究

分析普速铁路雨量监测系统的现状及其存在的问题,从工程设计的角度,提出普速铁路雨量监测系统的总体架构、系统功能、系统设置及设备配置、监测信息传输及网络设置、系统供电等方案,可作为今后普速铁路雨量监测系统设计及建设的参考。     

发展我国港口物流,提升港口国际竞争力

本文综述了国外港口物流运营经验及发展趋势、发展我国港口物流的社会环境和加速推进我国港口物流发展的战略意义,分析了我国发展港口物流存在的主要问题,提出加速发展港口物流的措施建议。     

陈毅军事理论研究

陈毅元帅是中国人民解放军的创建人和领导人之一,他在长期的武装革命斗争实践中,创造性地贯彻与执行毛泽东军事思想,不断地总结革命战争的的经验,形成了其丰富的军事理论,为毛泽东军事思想的丰富与发展,作出了重要的理论贡献。     

Serving vs. settling: What drives the establishment of low-cost carriers’ foreign bases?

This paper uses a probit model on a cross-sectional dataset of 202 airports and 29 airlines to assess the drivers for the establishment of foreign bases by European low-cost carriers (LCCs). We find that managerial, organizational, and environmental factors impact on foreign base establishment. In particular, there is evidence that the presence of a growth-oriented firm leader and the strategic importance of an airport for an airline significantly increase the probability of the presence of bases, while national unit labor costs, the volatility of flight operations and the membership of an LCC in an airline group significantly decrease this probability.     

Parking Spaces Repurchase Strategy Design via Simulation Optimization

Because of the rapid increase of vehicle numbers and land values, there is an increasing shortage in the supply of parking facilities in many cities. In many parking lots, residential drivers bought private parking spaces with high prices to ensure that they have spaces to park at any time. Recently, some parking lot operation companies plan to temporally repurchase a few private parking spaces back during certain time periods in a day and sell these places to public users to fully utilize the limited parking resources. How to choose the repurchase amounts and stopping time so as to maximize the profit then becomes an important problem. To solve this problem, a Gaussian mixture model is first proposed in this article to describe the time-varying arriving/departing behaviors of drivers and meanwhile the stochastic constraints of the profit maximization problem. Then, the expected optimal repurchase amounts and stopping time are estimated via simulation optimization. This new approach not only provides a useful statistical tool for parking spaces modeling but also overcomes several key limitations of current queuing based methodologies. Particularly, it emphasizes how to model drivers' behaviors on a small time-scale and explains the resulting benefits.     

膜-生物反应器污水处理工艺的研究与应用

本文介绍了膜-生物反应器工艺的组成、分类和特点,重点综述了膜-生物反应器污水处理工艺的研究进展及其在污水处理中的应用情况。