跳频电台组网方式分析

跳频通信是扩频通信的一个分支，它的突出优点是抗干扰性强，因而很适用于军事领域。跳频电台组网应用可以提高跳频电台的抗干扰性能，提高跳频通信的可通概率与战术应用的灵活性，介绍跳频技术发展现状，着重研究跳频电台组网的原理、方法以及组网的注意事项。     

舰载网络化监控系统

船舶监测、报警装置是现代船舶必不可少的设备之一，现代舰艇也采用了一些对主机系统的监控装置，随着电子信息技术和自动控制技术的不断发展，现代化船舶和舰艇的信息处理能力、作战系统网络化、控制自动化程度越来越高，舰艇指挥员需要扩大对舰艇各部分状态的感知。鉴于这种情况，建立基于现行全舰网络的舰载网络化监控系统是必须的。根据这一发展趋势对舰载网络化监控相关技术进行了研究。     

交通拥挤收费原理与对策研究

交通拥挤收费(Congestion Pricing)作为现代化城市交通需求管理(TDM)的有效措施之一,虽然在实践中颇多微词,但是其在减少交通吸引、控制交通流量、提高车速与路段通行能力、提高能源利用效率及提高路网的运行效率等方面效果显著,并且在缓解交通拥堵压力的同时带来了财政副收入。从经济学原理出发,利用边际成本定价理论、收入再分配理论以及公共产品和产权经济学理论分析了交通拥挤收费的本质、理论依据,最后提出交通拥挤收费的相关建议和措施。     

基于概率分析的高速公路联网收费路径识别技术

根据高速公路联网收费的特点,提出了一种基于概率分析的路径识别方法.其基本思路是在对含环路网有效路径分析的基础上,采用一定的交通量分配方法,通过比较分配交通量与调查交通量的误差来拟合和修正路径分配概率,用以实现对车辆路径的识别.该方法在河南省高速公路联网收费中已经得到实际应用,应用效果表明该方法是适用、可行的.     

城市交通拥挤的社会成本分析初探

交通拥挤的社会成本可分为生产成本、使用成本、时间耗费成本及外部成本,本文在定性分析的基础上,对使用成本和时间耗费成本做了定量分析,给出了计算公式,并通过对大连市西南路某路段在拥挤时段的调查,计算出了居民出行时间成本的损失和城市交通使用成本的损失,这一结果可以推广到整条道路或区域路网,从而为城市交通的良性发展和减少经济损失等方面提供了有效的理论依据。     

Why do you care what other people think? A qualitative investigation of social influence and telecommuting

The effect of social interactions on decision-making is a topic of current interest in the travel behavior literature. These interactions have been investigated primarily from an intra-household perspective, but increasingly too in other types of social settings. In the case of interactions within a workplace, it has been suggested that the decision to telecommute may have some important social components. Previous research has concentrated on social isolation, and the effect on job satisfaction of qualitatively different (i.e., telecommunications-mediated) relationships with managers and colleagues. A topic that remains unexplored is the way social norms, in effect the influence of other people’s behavior, may influence the decision to adopt telecommuting. In this paper we set to investigate, within a qualitative framework, the role of social contact in the process of acquiring information on, and making decisions about, telecommuting. The results indicate that social contact does play a subtle but non-trivial role in the adoption and continuation process, and offer some insights about the importance of the social dimension, institutional set-up, and how they interact to influence the decision to telecommute.     

广东省高速公路联网收费管理中存在的问题及建议

文中总结了目前广东省高速公路联网收费管理中存在的几点问题，提出了解决问题的建议。在广东省政府着力改进高速公路联网收费管理的当前，对完善其管理有一定的借鉴作用。     

One manufacturer's approach to improving jet transport fuel efficiency

In the face of rapidly escalating costs of aircraft fuel, since the early 1970s, the aerospace industry has embarked on a program of measures to reduce fuel consumption. This article describes an integrated set of measures which have been undertaken by Lockheed‐California to improve the fuel requirements of the Tristar, a wide‐bodied three engine medium to long range aircraft. Measures include operational changes, improvements to maintenance practices, long term hardware modifications and technological advances.     

Work and home location: Possible role of social networks

This research explores to what extent people’s work locations are similar to that of those who live around them. Using the Longitudinal Employer-Household Dynamics data set and the 2000 decennial census, we investigate the home and work locations of different census block residents in the Twin Cities (Minneapolis-St. Paul) metropolitan area. Our aim is to investigate if people who share a residence neighborhood also share work locations to a degree beyond what would be explained by distanhe observed patterns is the role neighborhood level and work place social networks play in locating jobs and residences respectively.     

A coupled multi-agent microsimulation of social interactions and transportation behavior

Choice set formation, location and mode preferences, coordinated scheduling, alternative utility valuations, and shared mobility resources are among the many activity-travel issues hypothesized to be significantly influenced by traveler interdependencies. Empirical evidence lags theory, particularly about the geography of social networks. A simulation tool is presented to let the experimenter construct and test hypothetical interdependencies between geography, socially-linked travelers, and activity-travel choices. The exploratory tool is integrated in the Multi-Agent Transportation Simulation Toolbox (MatSim-T). Initially, any social network can be constructed and embedded in geography. It can remain static, or be adapted to the travel patterns of the agents. The interactions and exchanges between agents influencing socializing and/or travel behavior can be defined in substance and in time/space. The reward for socializing or being socially linked can be varied. Finally, the co-dependence of social factors and travel behavior can be studied. This paper introduces the model and presents verification results which illustrate the coupling of extremely simplified socializing assumptions and travel behavior.