基于分析方法和实证方法的ECDIS可用性评估

为了有效改进ECDIS界面设计并全面提升其可用性,构建基于分析方法和实证方法的ECDIS可用性评估框架。从可用性的概念和内涵出发,定义ECDIS的可用性标准;然后选择6种分析方法预测ECDIS的可用性,进而通过实证方法验证预测结果的准确性。针对目前最流行的2种ECDIS进行实例研究得到定量数据和定性描述,比较分析二者的可用性。基于分析方法和实证方法的评估框架对于ECDIS可用性评估是有效可行的,有助于系统界面可用性的改进和提升。     

Spatial and Temporal Changes in Access Rights to Shellfish Resources in British Columbia

Over the past decade, the shellfish and finfish aquaculture industry has expanded rapidly in coastal British Columbia (BC) Canada. Foreshore and nearshore shellfish and finfish aquaculture leaseholds are sited in close proximity or in direct competition with habitat for wild shellfish. As a result, some wild shellfish harvesters believe shellfish farms are significantly reducing access to beaches and estuarine areas for wild harvesting, or that salmon farms are contaminating wild shellfish stocks. In this article, Geographic Information Systems (GIS) are used to analyze spatial and temporal trends in the growth of shellfish and finfish aquaculture tenures in BC, while interviews with stakeholders in coastal communities are used to explore user conflicts and the implications of changing access rights on the distribution of marine resources. Qualitative and quantitative findings suggest that shellfish aquaculture provides significant economic opportunities for coastal communities, but that such development may hold increased risk of spatial conflicts over marine habitat as the aquaculture industry continues to grow.     

低碳消费中公益广告的角色分析

本文通过对消费者信息处理过程的阶段分析,阐述低碳消费的观念作为公益广告的形式在传播中的信息传达阶段和信息扩散阶段的流程节点。在公益广告传播中要通过各种表现形式引导消费者对低碳消费信息认知,其次从正面的信息传达和反面的＂警钟诉求＂来塑造大众与低碳消费信息的情感,最后通过直接的信息诉求激励和间接的降低＂充欲主义＂的影响来促使消费行为发生乃至形成习惯。     

停车诱导信息集成结构模型设计及实现

面对动态、多变、实时的交通信息以及驾驶员对停车场信息的需求,停车管理需要走向智能化。停车诱导系统能为驾驶员提供实时的停车场信息以及周边道路情况,在基于多Agent系统的基础上进行分析,给出停车诱导信息集成结构模型,并利用面向对象的Agent进行设计,最后指出实现该系统还需进行的后续研究。     

地线电位差对信息设备干扰的分析与抑制

地线电位差对信息系统设备会造成干扰和危害，针对不同信息设备中干扰问题的分析，提出了抑制干扰的方法。     

中国铁通企业信息网络规划建设

介绍中国铁通企业信息网络的建设方案，就铁通全国一张网的特点对基础信息网络的拓扑结构、接入方式、IP地址的规划、路由策略、网络安全和网管系统等方面进行方案论述。     

机车信号信息定义与电码化探讨

根据目前机车信号信息定义及分配，就信号显示双绿时的电码化信息的选定以及U2码和U2S码的使用范围进行了分析，并提出了解决办法。     

铁路计算机通信网络管理的认识和对策

通过对网络管理功能定位、网管软件核心作用,以及新时期铁路计算机通信网络新任务的叙述,分析当今铁路计算机通信网络应用中所存在的认识误区和不足,并从铁路计算机通信网络今后应用发展趋势的视角出发,提出了相应的对策措施和建议,供有关部门和人员参考。     

Technical standardization of ITS and Asian initiatives for intelligent mobility

User-centric intelligent mobility businesses emerge and prosper in Asian metropolitan areas by utilizing the progress if information and communication technology (ICT). Under the rise of private lead initiatives on intelligent transport systems (ITS), the roles of public sectors are still large. Public sectors should precisely identify the extensive ITS services by considering the regional conditions and deploy them by collaboration between the public and private. Public sectors also are strongly encouraged to identify the benefits acquired by development and compliance of the international technical standards. Furthermore, in order to maximize the potential capacity of ICT, improvements of social infrastructures are required by the public sectors together with private businesses. With the realization of the collaboration works, Asian regions are well deserved to take the lead in future ITS initiatives.     

A flexible,adaptive traffic network simulation with parameter estimation

This article deals with macroscopic traffic modeling and online parameter estimation suitable for real-time simulation of complex road configurations. A numerical model for the nonlinear hyperbolic transport equation is introduced that works with a fundamental diagram of arbitrary shape and piecewise differentiable, discontinuous initial conditions. Suitable boundary conditions at road inlets and outlets are realized. A method to identify parameters of the underlying fundamental diagram via aggregated traffic sensor data is presented and the Fisher Information Matrix is utilized to optimize traffic sensor placement. The choice of parameterization, sensor placement, and the range of sensor data affect identifiability of the parameters of the fundamental diagram. The results are validated by comparison with a microscopic traffic simulation based on a car-following model.