基于时空棱柱的可达性及其计算
发布时间：2019-02-22 15:01
【摘要】：可达性是度量一个区域计划是否合理的一项重要指标,可反映移动个体在所给定的时间范围内利用某种交通工具可以达到某个位置的难易程度。近年来,可达性的计算已成为时间地理学研究中的一个热点问题。其中,基于时空棱柱的可达性计算研究也已取得不少成果,提出了几种常见的可达性计算方法。但这些度量没有考虑到:(1)个人调整活动的能力—应对受限制旅行模式;(2)旅行时间感知的不确定性;(3)旅行时间的时间变异性;(4)旅游信息对可达性的影响。本文主要研究以下内容:1.介绍可达性和时间地理学的基础知识,并阐述可达性研究的理论框架以及时空棱柱的概念与应用。2.论述时空棱柱在可达性度量中的应用问题。具体地,讨论基于地理信息系统来定位时空棱柱中所包含的医疗保健设施,并以美国俄勒冈州波特兰的相关数据为例来展示如何度量医疗保健设施的可达性和从实际角度度量可达性。3.用数值模拟来研究和说明现有可达性计算方法的不足,并给出有效的可达性度量。结果表明,给出的可达性度量是能反映喜欢活动的个体其社会包容性的一个有用指标;此外,发现可达性受限于时间延迟处罚并且可达性能确定所提供的旅行时间信息的影响大小。
[Abstract]:Reachability is an important index to measure whether a regional plan is reasonable. It can reflect the degree of difficulty that a mobile individual can reach a certain position by using a certain vehicle within a given time range. In recent years, the calculation of reachability has become a hot issue in the study of time geography. Among them, many achievements have been made in the research of reachability calculation based on spatio-temporal prism, and several common methods of reachability calculation are put forward. However, these measures do not take into account: (1) the ability of individuals to adjust their activities-coping with restricted travel patterns; (2) the uncertainty of travel time perception; (3) the time variability of travel time; (4) the impact of tourism information on accessibility. This paper mainly studies the following contents: 1. This paper introduces the basic knowledge of accessibility and temporal geography, and expounds the theoretical framework of accessibility research and the concept and application of spatio-temporal prism. 2. This paper discusses the application of spatiotemporal prism in the measurement of reachability. Specifically, to discuss the location of health-care facilities contained in space-time prisms based on geographic information systems, Taking the relevant data from Portland, Oregon, USA as an example, this paper shows how to measure the accessibility of health care facilities and how to measure accessibility from a practical point of view. The shortcomings of the existing reachability calculation methods are studied and explained by numerical simulation, and an effective reachability metric is given. The results show that the reachability measure given is a useful index to reflect the social inclusiveness of the individual who likes the activity. In addition, it is found that accessibility is limited by time delay penalty and accessibility determines the impact of the travel time information provided.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P208
[Abstract]:Reachability is an important index to measure whether a regional plan is reasonable. It can reflect the degree of difficulty that a mobile individual can reach a certain position by using a certain vehicle within a given time range. In recent years, the calculation of reachability has become a hot issue in the study of time geography. Among them, many achievements have been made in the research of reachability calculation based on spatio-temporal prism, and several common methods of reachability calculation are put forward. However, these measures do not take into account: (1) the ability of individuals to adjust their activities-coping with restricted travel patterns; (2) the uncertainty of travel time perception; (3) the time variability of travel time; (4) the impact of tourism information on accessibility. This paper mainly studies the following contents: 1. This paper introduces the basic knowledge of accessibility and temporal geography, and expounds the theoretical framework of accessibility research and the concept and application of spatio-temporal prism. 2. This paper discusses the application of spatiotemporal prism in the measurement of reachability. Specifically, to discuss the location of health-care facilities contained in space-time prisms based on geographic information systems, Taking the relevant data from Portland, Oregon, USA as an example, this paper shows how to measure the accessibility of health care facilities and how to measure accessibility from a practical point of view. The shortcomings of the existing reachability calculation methods are studied and explained by numerical simulation, and an effective reachability metric is given. The results show that the reachability measure given is a useful index to reflect the social inclusiveness of the individual who likes the activity. In addition, it is found that accessibility is limited by time delay penalty and accessibility determines the impact of the travel time information provided.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P208
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