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AI and design 人工智能与设计
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2024-02-24 DOI: 10.1177/23998083241236619
Michael Batty
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引用次数: 0
Unpacking urban scaling and socio-spatial inequalities in mobility: Evidence from England 解读城市规模和社会空间流动性的不平等:英格兰的证据
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2024-02-20 DOI: 10.1177/23998083241234137
Qi-Li Gao, Chen Zhong, Yikang Wang
Prior research on the scaling of city size and inequality has a primary focus on economic factors such as income. Limited research has addressed socio-spatial disparities in mobility, involving physical activities and social interactions among individuals and population groups. Utilising mobile phone app data, this study measured inequalities using multiple mobility-related indicators (i.e. the number of activity points, the radius of gyration, self-containment, and social interaction indices) and related to population size by scaling models. In England’s context, these indicators unfolding mobility patterns and social issues display different scaling regimes, varying from sublinear to super-linear. It was observed that larger cities are associated with greater social interactions, particularly among socioeconomically advantaged groups; however, they also exhibit exacerbated self-segregation. Due to the radiation effect of big cities, the performances (e.g. travel radius) of small surrounding towns deviate from the predicted values of scaling models. Within cities, the evenness of indicators is independent of population size and produces distinct spatial patterns. The findings expand upon previous research and provide a more nuanced understanding of the complex relationship between city size, urban inequality, and human mobility.
之前关于城市规模与不平等比例的研究主要集中在收入等经济因素上。涉及个人和人口群体间身体活动和社会交往的流动性社会空间差异的研究有限。本研究利用手机应用程序数据,使用多个与流动性相关的指标(即活动点数量、回旋半径、自足性和社会互动指数)来衡量不平等现象,并通过缩放模型将其与人口规模联系起来。在英格兰,这些反映流动模式和社会问题的指标显示出不同的缩放机制,从亚线性到超线性不等。据观察,大城市与更多的社会互动有关,特别是在社会经济条件优越的群体中;然而,大城市也表现出更严重的自我隔离。由于大城市的辐射效应,周边小城镇的表现(如旅行半径)偏离了比例模型的预测值。在城市内部,指标的均匀性与人口规模无关,并产生独特的空间模式。这些研究结果拓展了以往的研究,使人们对城市规模、城市不平等和人类流动性之间的复杂关系有了更细致的了解。
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引用次数: 0
Evaluating relocation behavior of establishments: Evidence for the short-term effects of COVID-19 评估企业的搬迁行为:COVID-19 短期效应的证据
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2024-01-31 DOI: 10.1177/23998083241230580
Ali Riahi Samani, Reza Riahisamani, Sabyasachee Mishra, Mihalis M Golias, David Jung-Hwi Lee
Due to the significant effects of establishments’ relocations on travel patterns and land-use conditions, investigating establishments’ relocation behavior is an important issue. In recent years, many establishments closed or relocated because of a downturn economy, health concerns, interrupted supply chains, and work-from-home caused by the pandemic. Hence, this study aims to propose a modeling approach to assess and compare the relocation behavior of establishments before, during, and after the pandemic. Establishments’ relocation behavior is modeled in two steps: relocation decision and relocation action. The former provides insights into behavioral factors associated with establishment relocation and the latter models likelihood of spatial relocation choice. Using the data collected from the state of Tennessee, USA, the Random Forest classification approach is incorporated to model both steps, where the model validation results showed the promising accuracy of this modeling approach. Moreover, statistical analyses are applied to evaluate the differences between the spatial relocation choices throughout the time. Results showed that in post-Covid conditions, the importance of establishment characteristics on relocation decisions was reduced by half and relocations occurred more due to office profile and accessibility. Results of modeling relocation action indicated the high importance of accessibility, even though the attractiveness of accessibility was reduced by 20.9% in post-Covid analysis. The findings of this study enrich the knowledge on establishment relocation behavior and provide valuable information regarding the effect of the pandemic, which can be used in policy development and travel behavior modeling by urban and transportation planners.
由于企业搬迁对旅行模式和土地使用条件有重大影响,因此调查企业搬迁行为是一个重要问题。近年来,由于经济不景气、健康问题、供应链中断以及大流行病导致的居家办公等原因,许多企业关闭或搬迁。因此,本研究旨在提出一种建模方法,以评估和比较企业在大流行病之前、期间和之后的搬迁行为。企业搬迁行为的建模分为两个步骤:搬迁决策和搬迁行动。前者深入分析了与机构搬迁相关的行为因素,后者则对空间搬迁选择的可能性进行建模。利用从美国田纳西州收集到的数据,采用随机森林分类法对这两个步骤进行建模,模型验证结果表明这种建模方法具有良好的准确性。此外,还应用统计分析来评估不同时期空间迁移选择之间的差异。结果表明,在后科维德时期,机构特征对搬迁决策的重要性降低了一半,搬迁更多地是由于办公场所概况和交通便利性。搬迁行动建模的结果表明,尽管在后 Covid 分析中,可达性的吸引力降低了 20.9%,但可达性仍具有很高的重要性。本研究的结果丰富了有关机构搬迁行为的知识,并提供了有关大流行病影响的宝贵信息,可用于城市和交通规划者的政策制定和旅行行为建模。
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引用次数: 0
The innovative role of cities in solving global problems with local solutions 城市在以本地解决方案解决全球问题方面的创新作用
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2024-01-09 DOI: 10.1177/23998083241227294
Linda See
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引用次数: 0
Facebook city: Place-named groups as urban communication infrastructure in Greater London Facebook 城市:大伦敦地区作为城市通信基础设施的地名群组
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2024-01-02 DOI: 10.1177/23998083231224136
Andrea Ballatore, Scott Rodgers, Liam McLoughlin, Susan Moore
This paper investigates the geography of Facebook use at an urban-regional scale, focussing on place-named groups, meaning various interest groups with names relating to places such as towns, neighbourhoods, or points of interest. Conceptualising Facebook as a digital infrastructure – that is, the platform’s urban footprint, in the form of its place-named groups, rather than what individuals share and create using the service – we explore the location, theme, and scale of 3016 groups relating to places in Greater London. Firstly, we address the quantitative and qualitative methodological challenges that we faced to identify the groups and ground them geographically. Secondly, we analyse the scale of the toponyms in the group names, which are predominantly linked to London’s suburbs. Thirdly, we study the spatial distribution of groups, both overall and by specific types, in relation to the socio-demographic characteristics of residents at the borough level. Through correlation and robust regression analyses, the presence and activity of groups are linked to a relatively older, non-deprived, and non-immigrant population living in less dense areas, with high variability across different group types. These results portray place-named Facebook groups as communication infrastructure skewed towards more banal interactions and places in Greater London’s outlying boroughs. This research is among the first to explore and visualise the urban geographies of Facebook groups at a metropolitan scale, showing the extent, nature, and locational tendencies of large-scale social media use as increasingly ordinary aspects of how people come to know, experience, live, and work in cities.
本文调查了在城市-区域范围内使用 Facebook 的地理情况,重点关注地名群组,即名称与城镇、社区或兴趣点等地名相关的各种兴趣群组。我们将 Facebook 概念化为一种数字基础设施,即以地名群组为形式的平台城市足迹,而不是个人使用该服务分享和创建的内容,因此我们探讨了与大伦敦地区地名相关的 3016 个群组的位置、主题和规模。首先,我们探讨了在确定群组和地理位置方面所面临的定量和定性方法挑战。其次,我们分析了群体名称中地名的规模,这些地名主要与伦敦郊区有关。第三,我们研究了群体的空间分布,包括总体分布和特定类型的分布,并将其与区级居民的社会人口特征联系起来。通过相关性和稳健回归分析,群体的存在和活动与居住在人口密度较低地区的相对年长、非贫困和非移民人口有关,不同群体类型之间存在很大差异。这些结果将以地名命名的 Facebook 群组描绘成大伦敦外围行政区更偏向于平庸互动和场所的交流基础设施。这项研究是在大都市尺度上探索 Facebook 群组的城市地理并将其可视化的首批研究之一,它显示了大规模社交媒体使用的范围、性质和地点趋势,这在人们如何认识城市、体验城市、在城市生活和工作的过程中越来越常见。
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引用次数: 0
An agent-based simulation model for the growth of the Sydney Trains network 悉尼火车网络发展的代理模拟模型
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2024-01-02 DOI: 10.1177/23998083231224831
Bahman Lahoorpoor, David M Levinson
Agent-based models are computational methods for simulating the actions and reactions of autonomous entities with the ability to capture their effects on a system through interaction rules. This study develops an agent-based simulation model (RANGE) to replicate the growth of Sydney Trains network by given exogenous historical evolution in land use. A set of locational rules has been defined to find a sequence of optimal stations from an initial seed. The model framework is an iterative process that includes five consecutive components including environment loading, measuring access, locating stations, connecting stations, and evaluating connections. In each iteration, following the locating/connecting process in each line of railways network, the accessibility will be calculated, and land use will be updated. Based on the compilation of network topology and properties, each iteration will be a year-on-year time step analysis. The network evolves based on a set of locational rules in regards to changes in the historic land use. Also, two coverage indices are defined to evaluate the fitness of the simulated lines in comparison to the Sydney tram and train network.
基于代理的模型是模拟自主实体的行动和反应的计算方法,能够通过交互规则捕捉它们对系统的影响。本研究开发了一种基于代理的仿真模型(RANGE),通过土地利用的外生历史演变来复制悉尼火车网络的增长。该模型定义了一系列定位规则,以从初始种子中找到最优车站序列。模型框架是一个迭代过程,包括五个连续的组成部分,包括环境负荷、交通流量测量、车站定位、车站连接和连接评估。在每一次迭代中,铁路网各线路的定位/连接过程结束后,将计算可达性并更新土地使用情况。根据网络拓扑和属性汇编,每次迭代都将进行逐年时间步长分析。根据历史上土地利用的变化,网络将根据一系列定位规则进行演化。此外,还定义了两个覆盖指数,用于评估模拟线路与悉尼有轨电车和火车网络的匹配度。
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引用次数: 0
Examining the impact of the urban transportation system on tangible and intangible vitality at the city-block scale in Nanjing, China 在中国南京市街区范围内考察城市交通系统对有形和无形活力的影响
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2023-12-28 DOI: 10.1177/23998083231223867
Liu Yang, Mingbo Wu, Yishan Chen, Chenyang Wu
Cities’ transportation systems have substantial impacts on urban vitality. Given the increasing availability of data on residents’ activities, cities’ tangible/intangible vitality can be analyzed more accurately. This study examined the associations of tangible and intangible vitality with transportation system features, specifically exploring various transportation modes’ accessibility, features related to block forms, and border vacuums at a block scale across different urban areas. Nanjing, China, was analyzed as a case study. Our findings reveal a declining gradient of urban vitality from the Old Town to the Main City and the New Area. Consequently, we suggest prioritizing efforts to enhance urban vitality in the New Area, particularly in its low-vitality blocks. Strategies for improvement include increasing public transportation accessibility and road density, which can positively influence the overall vitality of the entire city. Improving active travel accessibility has a positive impact on tangible vitality, while enhancing automobile accessibility potentially contributes to intangible vitality. Negative border effects of large transportation projects on tangible vitality should be mitigated. Interestingly, we found that intersection density has opposite effects on tangible and intangible vitality. These insights offer valuable guidance for urban planners aiming to enhance vitality levels across an entire city or within specific areas.
城市的交通系统对城市活力有着重大影响。随着居民活动数据的不断增加,可以更准确地分析城市的有形/无形活力。本研究探讨了有形和无形活力与交通系统特征之间的关联,特别是探讨了不同城市地区各种交通方式的可达性、街区形态相关特征以及街区尺度上的边界真空。我们以中国南京为案例进行了分析。我们的研究结果表明,从老城到主城和新区,城市活力呈梯度下降趋势。因此,我们建议优先提升新区的城市活力,尤其是低活力街区。改善策略包括提高公共交通的可达性和道路密度,这将对整个城市的整体活力产生积极影响。提高主动出行的可达性对有形活力有积极影响,而提高汽车的可达性则可能有助于增强无形活力。应减少大型交通项目对有形活力的负面边界效应。有趣的是,我们发现交叉口密度对有形活力和无形活力的影响正好相反。这些见解为旨在提高整个城市或特定区域活力水平的城市规划者提供了宝贵的指导。
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引用次数: 0
Street characteristics and human activities in commercial districts: A clustering-based approach application for Shenzhen 商业区的街道特征和人类活动:基于聚类的方法在深圳的应用
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2023-12-26 DOI: 10.1177/23998083231224013
Chendi Yang, Rui Ma, Hongqiang Fang, Siu Ming Lo, Jacqueline TY Lo
As a significant public place, the commercial area has a potential correlation between its built environment and human activities. However, the current research primarily concentrates on the internal environment of the store and customer satisfaction, while the impact of some environmental features of the outer space of the business district on visitors is seldom systematically discussed. This study takes four commercial districts in Shenzhen as examples, and the streets were categorized into five types based on street characteristics using the cluster analysis method. The relationship between each type of street and the population distribution in the region was subsequently discussed. To this end, a holistic approach was adopted, integrating multi-source urban data such as street view panorama, points of interest (POI), and street and building vectors to describe the built environment. Furthermore, the distribution of people at different times, based on location-based services (LBS) data, was combined to establish statistical models of various streets in commercial districts and evaluate the relationship between street characteristics and human activities. The results demonstrate that the relationship between population distribution and spatial characteristics is different in the five types of streets. Different types of streets have their own advantages, and human activities in the business district are often not affected by this advantage, but by other characteristics. The impact of these factors varies significantly between weekdays and weekends. By systematically categorizing street types and assessing the impact of environmental factors on pedestrian flow, this study sheds new light on the renewal and development of urban commercial districts in the future.
商业区作为重要的公共场所,其建筑环境与人类活动之间存在着潜在的关联。然而,目前的研究主要集中在店铺内部环境和顾客满意度方面,很少系统地探讨商业区外部空间的一些环境特征对游客的影响。本研究以深圳的四个商业区为例,采用聚类分析方法,根据街道特征将街道分为五种类型。随后讨论了每种类型的街道与该地区人口分布之间的关系。为此,我们采用了一种综合方法,将街景全景图、兴趣点(POI)、街道和建筑矢量等多源城市数据整合在一起,以描述建筑环境。此外,还结合基于位置服务(LBS)数据的不同时间段的人员分布情况,建立了商业区不同街道的统计模型,并评估了街道特征与人员活动之间的关系。结果表明,五类街道的人口分布与空间特征之间的关系是不同的。不同类型的街道有各自的优势,而商业区的人类活动往往不受这种优势的影响,而是受其他特征的影响。这些因素的影响在工作日和周末有很大不同。通过对街道类型进行系统分类,并评估环境因素对人流的影响,本研究为未来城市商业区的更新和发展提供了新的启示。
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引用次数: 0
An inductive method for classifying building form in a city with implications for orientation 对城市建筑形式进行分类的归纳法及其对定位的影响
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2023-12-25 DOI: 10.1177/23998083231224505
Jinmo Rhee, Ramesh Krishnamurti
The utilization of deep learning for form analysis facilitates the classification of an extensive number of forms based on their morphological features. A critical consideration for implementing such analysis methods in architectural or urban forms is whether building orientation should be embedded within the data. Orientation functions as a form variable significantly influenced by environmental, social, and cultural contexts within a city. In contrast to other domains where forms are extrapolated in relation to their context, in the city, domain orientation uniquely characterizes building form. In this paper, we introduce a pipeline for constructing an extensive building form dataset and scrutinizing the morphological identity of building forms, with a particular focus on the implications of building orientation as a manifestation of urban locality. Through a case study situated in Montreal, we engage in a comparative analysis employing two distinct datasets—those with orientation-embedded forms and those with orientation-normalized forms. Our research aims to investigate the typo-morphological characteristics of the building forms of the city and to examine how building orientation contributes to the identification of these traits and mirrors urban locality.
利用深度学习进行形态分析有助于根据形态特征对大量形态进行分类。在建筑或城市形态中实施此类分析方法的一个重要考虑因素是,是否应在数据中嵌入建筑朝向。朝向作为一种形态变量,受到城市环境、社会和文化背景的显著影响。在其他领域,形式是根据其环境推断出来的,而在城市中,领域方向则是建筑形式的独特特征。在本文中,我们介绍了一个用于构建广泛的建筑形态数据集和仔细研究建筑形态特征的管道,其中特别关注了建筑朝向作为城市地域性表现形式的含义。通过对蒙特利尔的案例研究,我们使用两个不同的数据集进行了比较分析--一个是包含朝向的建筑形态数据集,另一个是朝向规范化的建筑形态数据集。我们的研究旨在调查城市建筑形式的错位形态特征,并研究建筑朝向如何有助于识别这些特征并反映城市地域性。
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引用次数: 0
In praise of (spatial) bundles 赞美(空间)束
IF 3.5 3区 经济学 Q2 ENVIRONMENTAL STUDIES Pub Date : 2023-12-19 DOI: 10.1177/23998083231224151
Dani Arribas-Bel, Martin Fleischmann
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引用次数: 0
期刊
Environment and Planning B: Urban Analytics and City Science
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