【摘 要】
：
起止点数据是一种由起点、终点、起止点时间及一些其他属性构成的轨迹数据.其是一类非常典型的时空数据,大量产生于城市交通管理、人口迁移、社交媒体等领域.可视分析技术目前被广泛用于研究大规模起止点数据的时空模式,能够实现对数据深层次的探索.首先介绍了起止点数据特征以及可视分析的任务,其次梳理了近年来起止点数据可视分析中的可视化方法、交互技术和可视化系统,并对不同领域的应用案例进行介绍.最后,对起止点数据可视研究中面临的问题进行总结,对起止点数据可视化研究的前景做出了展望,以期为未来的研究提供新的思路.
【机 构】
：
中国科学院新疆理化技术研究所,新疆乌鲁木齐 830011;中国科学院大学,北京 100049;新疆民族语音语言信息处理研究室,新疆乌鲁木齐 830011;中国科学院新疆理化技术研究所,新疆乌鲁木齐 8
论文部分内容阅读
起止点数据是一种由起点、终点、起止点时间及一些其他属性构成的轨迹数据.其是一类非常典型的时空数据,大量产生于城市交通管理、人口迁移、社交媒体等领域.可视分析技术目前被广泛用于研究大规模起止点数据的时空模式,能够实现对数据深层次的探索.首先介绍了起止点数据特征以及可视分析的任务,其次梳理了近年来起止点数据可视分析中的可视化方法、交互技术和可视化系统,并对不同领域的应用案例进行介绍.最后,对起止点数据可视研究中面临的问题进行总结,对起止点数据可视化研究的前景做出了展望,以期为未来的研究提供新的思路.
其他文献
This study presents a systematic review of the literature on service-oriented manufacturing (SOM).Specifically,we focus on the impact of SOM on firm operating decisions,which distinguishes this work from previous reviews.This study proposes a classificati
The rapid development of economics requires highly efficient and environment-friendly urban transpor-tation systems.Such requirement presents challenges in sustainable urban transportation.The analysis and under-standing of transportation-related behavior
为有效提升生物基纤维素非织造材料的抗菌性能以拓展其应用范围,以橄榄醇与反式-薄荷基-2,8-二烯-1-醇为原料通过一步法合成大麻二酚并作为抗菌剂,进而完成纤维素非织造布的抗菌改性,并对抗菌剂及非织造产品的结构和性能进行表征分析.FTIR和1H-NMR及XPS测试结果表明,基于傅克烷基化反应成功合成大麻二酚,并通过氢键等作用引入至纤维素非织造布表面.SEM、TG-DTG及拉伸测试结果表明,改性过程不破坏纤维素非织造布的固有结构,且大麻二酚的引入可同时促进热稳定性和力学性能的提升.通过菌落计数法测定抗菌性能,
Grand infrastructure projects,such as dam,power plant,petroleum,and gas industry projects,have several contractors working on them in several indepen-dent sub-projects.The concern of reducing the duration of these projects is one of the important issues a
1 IntroductionrnThe engineering and construction (E&C) industry is human resource-intensive.Most E&C tasks are performed,handled,or supervised by humans.Besides,the size and complexity of today\'s E&C projects require the involve-ment of many profession
1 BackgroundrnAs the basic principle of the world economy,environment,and social development,sustainable development is the focus of the international community today.In the Olympic Agenda 2020 published by the International Olympic Committee (IOC),sustai
The management of resources has been claimed to be as important as scheduling methods.Inefficiency in managing resources may bring about severe delays and cost overruns caused by resource shortages in some cases and/or idle resources in others.Therefore,r
1 IntroductionrnThe development of the Intemet of Things,drones,and new social media platforms opened up an unprecedented space for the autonomy of human society.It promoted the formation of a new form of social relations and social field— cyber society (
Given the European Public Procurement Directive 2014/24/EU,policymakers have ordered the inclusion of various criteria,such as the price,life-cycle costs,environmental,and social aspects,in the evaluation of tenders for public construction projects.Conseq
塔吊是建筑工程中使用频率最高的垂直运输工具.由于塔吊的运行风险较高,提高其安全管理水平成为业界亟待解决的问题.近年来,信息与通信技术(ICT)逐渐被应用于塔吊安全管理,但目前该领域的应用多为单点开发且智能化水平偏低,未能很好地满足现有的塔吊安全管理需求.通过查阅近十几年的塔吊安全管理领域的相关文献,将国内外学者对塔吊安全管理研究现状进行梳理,分析了现有研究对象、关键技术、关注度和优劣势.此外,通过对现有方法的分析,提出了未来塔吊安全管理的目标和框架.将ICT技术中有潜力的建筑信息模型(BIM)与计算机视觉