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Reimagining urban waste management: Addressing social, climate, and resource challenges in modern cities 重新构想城市废物管理:应对现代城市的社会、气候和资源挑战
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-24 DOI: 10.1016/j.cities.2024.105553
Jutta Gutberlet , Torleif Bramryd
Governments worldwide are seeking better solutions for solid waste management. Thermal treatment projects are presented as quick fixes for rising waste challenges, without addressing the limitations of incineration. Currently, there is a rise in proposals for thermal treatment technologies in developing countries. Scrutiny of the risks and impacts of these alternatives is necessary due to social, climate, and resource considerations. Energy from waste incineration is considered fossil energy since about half of the CO2 emissions come from fossil polymers in the waste. From a sustainability perspective, landfilling is a short-term option for materials currently unsuitable for recycling. Landfills act as bioreactors, producing valuable biogas, and serve as “resource banks,” storing unrecyclable resources until better recycling techniques are developed. In developing countries manual labor is abundant and material sorting and landfilling are more valuable and have a lower climate and resource footprint. This paper offers a novel, integrated perspective of waste management in view of poverty reduction, climate change and resource conservation.
世界各国政府都在寻求更好的固体废物管理解决方案。热处理项目被视为应对日益严峻的废物挑战的快速解决方案,但却没有解决焚烧的局限性。目前,发展中国家关于热处理技术的建议越来越多。出于社会、气候和资源方面的考虑,有必要对这些替代技术的风险和影响进行审查。垃圾焚烧产生的能源被视为化石能源,因为大约一半的二氧化碳排放来自垃圾中的化石聚合物。从可持续发展的角度来看,垃圾填埋是目前不适合回收利用的材料的短期选择。垃圾填埋可作为生物反应器,产生有价值的沼气,还可作为 "资源库",储存不可回收的资源,直到开发出更好的回收技术。在发展中国家,人工劳动力丰富,而材料分类和填埋更有价值,对气候和资源的影响也更小。本文从减贫、气候变化和资源保护的角度,为废物管理提供了一个新颖的综合视角。
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引用次数: 0
Can urban populism democratize the city? The Tel Aviv-Jaffa 2008 municipal elections and their aftermath 城市民粹主义能否使城市民主化?特拉维夫-雅法 2008 年市政选举及其后果
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-24 DOI: 10.1016/j.cities.2024.105524
Omri Cohen
How do cities become more democratic? While some view local government as harboring greater democratic opportunities than the state, others identify local obstacles that inhibit democratization. Building on ideas of democratic populism, this article contributes to existing research on the right to the city by demonstrating how the construction of “an urban people,” and rhetoric and practices of urban populism can push for local democratization. Empirical analysis of the Tel Aviv-Jaffa 2008 municipal elections and their aftermath reveals that defining and engaging with a notion of the city's “ordinary people” can serve to further urban democracy. Four mutually reinforcing levels of transformative populism are identified: transformation of discourse, participation, rules of the game, and policy. The findings of this study suggest that democratically transforming discourse faces less resistance from local elites than transforming participation, the rules of the game, and policy.
城市如何变得更加民主?一些人认为地方政府比国家拥有更多的民主机会,而另一些人则认为地方政府存在阻碍民主化的障碍。本文以民主民粹主义思想为基础,通过展示 "城市人民 "的构建以及城市民粹主义的言论和实践如何推动地方民主化,为现有的城市权研究做出贡献。对特拉维夫-雅法 2008 年市政选举及其后果的实证分析表明,定义并参与城市 "普通人 "的概念有助于推进城市民主。研究确定了变革型民粹主义的四个相辅相成的层面:话语变革、参与、游戏规则和政策。研究结果表明,与参与、游戏规则和政策的变革相比,话语的民主变革所面临的地方精英阻力较小。
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引用次数: 0
Effects of economic growth target on the urban–rural income gap in China: An empirical study based on the urban bias theory 经济增长目标对中国城乡收入差距的影响:基于城市偏差理论的实证研究
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-24 DOI: 10.1016/j.cities.2024.105518
Dongsheng Yan , Wei Sun , Pingxing Li , Chonggang Liu , Yongjin Li
Urban–rural imbalance is a common phenomenon, and its prominent manifestation is the sustained expansion of the urban–rural income gap. For emerging countries, this gap encountered during the development process should be addressed by promoting development, which also puts forward high requirements for economic management. Inspired by political economy theory and the widening urban–rural income gap in China, this study constructs a theoretical framework of “purpose-behavior-performance-structure” based on the urban bias theory, and then quantitatively examines the effect of economic growth target on the urban–rural income gap based on panel data at the provincial level. In addition, we explore the mechanism by which economic growth targets affect the urban–rural income gap with the mediating effect model, and investigate the impact of marketization and spatial structure on the relationship between economic growth targets and urban–rural income gap with the moderating effect model. The results show that the economic growth target significantly contributes to the widening urban–rural income gap in the face of the political promotion incentives and economic growth target accountability system, and this effect exhibits substantial spatiotemporal heterogeneity. In addition, fiscal expenditure, fixed asset investment, and labor mismatch under urban bias are important mechanisms that lead to the widening urban–rural income gap, and the marketization level and spatial structure significantly affect this relationship. We put economic growth management, urban bias, and urban–rural income gap into the “purpose-behavior-performance-structure” theoretical framework, which provides a new explanatory perspective for understanding the urban–rural income gap in emerging economies, and new policy insights for rational economic growth management.
城乡失衡是一个普遍现象,其突出表现就是城乡收入差距持续扩大。对于新兴国家来说,在发展过程中遇到的这种差距需要通过促进发展来解决,这也对经济管理提出了很高的要求。受政治经济学理论和中国城乡收入差距扩大的启发,本研究在城市偏差理论的基础上构建了 "目的-行为-绩效-结构 "的理论框架,并基于省级面板数据定量检验了经济增长目标对城乡收入差距的影响。此外,我们还利用中介效应模型探讨了经济增长目标对城乡收入差距的影响机制,并利用调节效应模型研究了市场化和空间结构对经济增长目标与城乡收入差距关系的影响。结果表明,在政治晋升激励和经济增长目标责任制的作用下,经济增长目标对城乡收入差距的扩大有显著的促进作用,而且这种作用表现出很大的时空异质性。此外,城市偏向下的财政支出、固定资产投资和劳动力错配也是导致城乡收入差距扩大的重要机制,而市场化水平和空间结构会显著影响这种关系。我们将经济增长管理、城市偏向和城乡收入差距纳入 "目的-行为-绩效-结构 "的理论框架,为理解新兴经济体的城乡收入差距提供了新的解释视角,也为合理的经济增长管理提供了新的政策启示。
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引用次数: 0
Investment and crime on residential street segments: Assessing the moderating role of neighborhood characteristics 住宅街段的投资与犯罪:评估街区特征的调节作用
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-24 DOI: 10.1016/j.cities.2024.105492
Marie Skubak Tillyer , Arthur Acolin , Rebecca J. Walter
Research suggests that investment in the form of structural home repairs, new construction, and home renovation is associated with crime reductions in residential areas. The current study examines how the relationship between investment and crime on residential street segments is moderated by neighborhood characteristics using longitudinal data from six large U.S. cities to better understand how investment strategies can be targeted to maximize public safety benefits. We estimate spatial Durbin models with street segment and census tract by year fixed effects to examine the effects of one measure of direct investment, building permits, on changes in crime at street segments and the extent to which such effects vary by census tract-level concentrated disadvantage, residential stability, median housing values, percent non-White, percent foreign-born, and population density. Findings reveal a significant negative relationship between permit activity and changes in crime in all cities. With few exceptions, effects were strongest among segments in the densest neighborhoods with the highest percentage of foreign-born residents where concentrated disadvantage is high and residential stability and median home values are low. The moderating influence of the racial and ethnic residential population varied across cities. We discuss implications, including avoiding unintended consequences associated with investment.
研究表明,以房屋结构维修、新建筑和房屋翻新等形式进行的投资与住宅区犯罪率的降低有关。本研究利用美国 6 个大城市的纵向数据,研究了投资与住宅街段犯罪之间的关系如何受邻里特征的调节,从而更好地了解如何有针对性地制定投资策略,以最大限度地提高公共安全效益。我们估算了具有街道区段和人口普查区年固定效应的空间杜宾模型,以研究直接投资的一种衡量标准--建筑许可--对街道区段犯罪率变化的影响,以及这种影响因人口普查区层面的集中劣势、居住稳定性、住房价值中值、非白人比例、外国出生人口比例和人口密度而不同的程度。研究结果表明,在所有城市中,许可活动与犯罪率变化之间存在明显的负相关关系。除少数例外情况外,在人口密度最高、外国出生居民比例最高的社区,其影响最大,因为这些社区的集中劣势较高,而居住稳定性和房屋价值中位数较低。种族和民族居住人口的调节作用因城市而异。我们讨论了相关影响,包括避免与投资相关的意外后果。
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引用次数: 0
How care infrastructures support distance and connection in community welfare organisations: Learning from COVID-19 lockdowns 护理基础设施如何支持社区福利组织的距离和联系:从 COVID-19 封锁中学习
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-24 DOI: 10.1016/j.cities.2024.105453
Emma Mitchell , Kathleen Mee , Emma R. Power , Ilan Wiesel
The coronavirus pandemic forced local support services in marginalised communities to adapt how they operated at the same time as demand for assistance soared. Social distancing restrictions brought into sharp relief the infrastructural dimensions of social care and support services and networks that are often backgrounded in day-to-day practice. A shadow care infrastructures lens looks purposively at care infrastructures that are not readily seen or acknowledged in dominant welfare discourse and research (Power, Wiesel, Mitchell, & Mee, 2022). Taking this analytic lens as our starting point, in this paper we explore how relations of care were reconfigured by the shift to remote care delivery during Covid-19 lockdowns and beyond. The challenges of providing care during lockdown reveal the complex interplay between distance and proximity in care relations and practices and the possibilities for doing care differently. The paper draws primarily on in-depth interviews with paid and voluntary supporters across a diverse range of care organisations servicing two Local Government Areas (LGAs) in Central Western Sydney. A gateway region for new migrants west of the population centre of Sydney, it was one of the areas worst affected by the outbreak of the Delta variant of Covid-19 in 2021. The paper reflects on the potential longevity of pandemic care practices as cities learn to live with Covid.
冠状病毒大流行迫使边缘化社区的地方支持服务机构在援助需求激增的同时调整运作方式。社会疏远的限制使社会关怀和支持服务及网络的基础设施层面变得更加突出,而这些方面在日常实践中往往被忽视。影子照护基础设施的视角有目的性地关注那些在主流福利话语和研究中不容易被看到或承认的照护基础设施(Power, Wiesel, Mitchell, & Mee, 2022)。以这一分析视角为出发点,我们将在本文中探讨在科维德-19 封锁期间及之后,护理关系是如何通过向远程护理服务的转变而被重构的。在封锁期间提供护理所面临的挑战揭示了护理关系和实践中远近之间复杂的相互作用,以及以不同方式提供护理的可能性。本文主要利用了对悉尼中西部两个地方政府辖区(LGAs)的各种护理组织的有偿和志愿支持者的深入访谈。该地区是悉尼人口中心以西新移民的门户地区,也是 2021 年三角洲变种 Covid-19 爆发后受影响最严重的地区之一。本文探讨了在城市学会与 Covid 共存的过程中,大流行病护理实践的潜在长期性。
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引用次数: 0
Visualization of commuting areas and examination of jobs-housing balance with the adoption of excess commuting 通勤区域的可视化和采用超额通勤后工作与住房平衡的研究
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-24 DOI: 10.1016/j.cities.2024.105541
Bing Sheng Wu, Tzu-Chi Chieh
Rapid urban growth extends the boundaries of urbanized areas and makes people spend extra travel cost on the journey to work. Scholars have examined commuting behaviors between residence and work places within a region, and suggested the conceptual theory of jobs-housing balance to evaluate if there are sufficient job opportunities for residents in the region. A quantitative measurement of excess commuting is proposed to reflect the degree of jobs-house balance. However, current studies focus on the evaluation of excess commuting and the causality of spatial restructuring between residence and workplace, the spatial extend of excess commuting in an urban region is not visually delineated. In addition, conventional studies acquire static data such as statistic data or other survey data to analyze impacts of commuting patterns on urban formation. Today the emergence of spatial big data sheds light on the causality of urban commuting from higher spatial and temporal resolutions. This study aims to examine the degree of jobs-housing balance through the calculation of excess commuting and represent the spatial extent of excess commuting of Taichung metropolitan area in Taiwan. Electronic Toll Collection (ETC) data, the spatial big data which is publicly accessible in Taiwan, is introduced as the commuting data and to calculate three key parameters of excess commuting, Tmin, Tobs, and Tmax. The three parameters are used to visualize the extent of commuting zones and examine commuting patterns of Taichung metropolitan area and observe the spatial relationship between those patterns and land-use types. The evaluation of excess commuting indicates that the degree of jobs-housing imbalance in Taichung metropolitan area is similar to Los Angeles metropolis in US. The analytical results explain how ETC data can be successfully used for the calculation of excess commuting, and visualization of the extent of commuting regions. In addition, after the cluster analysis of residential areas, it is intuitive to observe spatial correlation between hot zones of residential areas and the spatial extent of theoretical maximum commuting, and shows that the scenarios of commuting can be considered as an indicator to explain the possibility of urban expansion in the future.
城市的快速发展扩大了城市化地区的边界,使人们在上班途中花费了额外的交通成本。学者们研究了区域内居住地与工作地之间的通勤行为,并提出了职住平衡的概念理论,以评估区域内居民是否有足够的就业机会。有学者提出了对过量通勤的量化测量方法,以反映就业-住房平衡的程度。然而,目前的研究主要集中在对过度通勤的评估以及居住地与工作地之间空间结构调整的因果关系上,城市地区过度通勤的空间延伸并没有得到直观的描述。此外,传统研究都是通过统计数据或其他调查数据等静态数据来分析通勤模式对城市形成的影响。如今,空间大数据的出现从更高的时空分辨率揭示了城市通勤的因果关系。本研究旨在通过计算过剩通勤量来检验就业与住房的平衡程度,并呈现台湾台中都会区过剩通勤量的空间范围。本研究引入台湾公开的空间大数据--电子收费站(ETC)数据作为通勤数据,并计算出过量通勤的三个关键参数:Tmin、Tobs 和 Tmax。通过这三个参数,可以直观地看出通勤区的范围,研究台中都会区的通勤模式,并观察这些模式与土地利用类型之间的空间关系。对过度通勤的评估表明,台中都会区的职住失衡程度与美国洛杉矶都会区相似。分析结果解释了如何成功利用 ETC 数据计算过量通勤,以及通勤区域范围的可视化。此外,经过居住区聚类分析,直观地观察到居住区热点区域与理论最大通勤空间范围之间的空间相关性,说明通勤情景可作为解释未来城市扩张可能性的指标。
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引用次数: 0
Neighborhood-level determining factors of travel distance by trip purpose: Policy implications for the N-minute city 按出行目的划分的邻里出行距离决定因素:对 N 分钟城市的政策影响
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-24 DOI: 10.1016/j.cities.2024.105464
Yejin Kim , Sugie Lee
As part of efforts to reduce carbon emissions, the concept of n-minute cities has been proposed. Although many global cities have attempted to implement this idea, there is still a lack of quantitative research on n-minute cities. This study aims to analyze factors that influence living radii by utilizing mobile phone location-based mobility big data and spatial regression analysis, thereby contributing to the implementation of n-minute cities. By distinguishing between pre- and post-COVID-19 periods and between commuting and non-commuting travel, this study reveals decreased average travel distances in the post-pandemic period and identifies factors influencing living radii, thereby favoring the concept of n-minute cities. During the post-COVID-19 period, the impact of factors such as population density, commercial facilities, and the job-housing ratio on travel distance has shifted, while neighborhood living and cultural facilities maintain consistent influence. This underscores the importance of prioritizing these aspects in n-minute city planning. Additionally, the mix of residential and business uses consistently affects shorter commuting distances, highlighting its critical role in n-minute city development. This study is significant for identifying urban environmental factors that effectively reduce living radii based on actual travel behaviors.
作为减少碳排放努力的一部分,人们提出了 n 分钟城市的概念。尽管全球许多城市都在尝试实施这一理念,但目前仍缺乏对 n 分钟城市的定量研究。本研究旨在利用基于手机定位的移动大数据和空间回归分析,分析影响生活半径的因素,从而为 n 分钟城市的实施做出贡献。通过区分 "COVID-19 "之前和之后、通勤和非通勤出行,本研究揭示了 "COVID-19 "流行后平均出行距离的减少,并确定了影响生活半径的因素,从而有利于 "n 分钟城市 "概念的实现。在后 COVID-19 时期,人口密度、商业设施、工作与住房比例等因素对出行距离的影响发生了变化,而社区生活和文化设施的影响保持一致。这凸显了在 n 分钟城市规划中优先考虑这些方面的重要性。此外,住宅和商业用途的组合始终影响着较短的通勤距离,突出了其在 n 分钟城市发展中的关键作用。这项研究对于根据实际出行行为确定有效缩短生活半径的城市环境因素具有重要意义。
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引用次数: 0
Corrigendum to “Using deep learning to unravel the structural evolution of block-scale green spaces in urban renewal” [Cities 150 (2024) 105030] 利用深度学习揭示城市更新中街区级绿地的结构演变》[《城市》150 (2024) 105030]更正
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-23 DOI: 10.1016/j.cities.2024.105527
Conghui Zhou , Shining Zhang , Bowen Liu , Tianjiao Li , Jixin Shi , Huiying Zhan
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引用次数: 0
Bridging the education gap: A comprehensive analysis of travel distance and education quality based spatial accessibility of early childhood education in Metropolitan Melbourne 缩小教育差距:基于墨尔本大都会幼儿教育空间可达性的旅行距离和教育质量综合分析
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-23 DOI: 10.1016/j.cities.2024.105530
Shiyang Lyu , Xiaoxuan Chen , Kiki Maulana Adhinugraha , David Taniar
In Australia, Melbourne's population is growing rapidly and will soon overtake Sydney, fuelled by a COVID-19 baby boom that has increased demand for early childhood education (ECE). In response, the Victorian Government has announced transformational reforms to improve the accessibility and quality of ECE for the growing urban population. This study aims to addresses the evolution and effectiveness of ECE reforms in Melbourne from 2021 to 2036 by proposing an innovative approach that integrates spatial accessibility and educational quality into ECE evaluations. Using the distance decay function, the Floating Catchment Area (FCA) method and the Huff model, it extends traditional geographical analyses by highlighting the importance of educational quality in parental choice and providing a refined technique for simulating local demand based on educational quality and travel distance. Overall, inequalities in educational resources have been identified, with a concentration of ECE services near the CBD, despite high population density, while peripheral areas have significant service deficits. Furthermore, the projected poor accessibility scores for 2026, 2031 and 2036 highlight the urgent need for educational infrastructure development, even in areas rated as having better accessibility in 2021.
在澳大利亚,墨尔本的人口正在迅速增长,很快将超过悉尼,COVID-19 婴儿潮的推动增加了对幼儿教育(ECE)的需求。为此,维多利亚州政府宣布进行转型改革,以改善日益增长的城市人口对幼儿教育的可及性和质量。本研究旨在通过提出一种将空间可达性和教育质量纳入幼教评估的创新方法,探讨 2021 年至 2036 年墨尔本幼教改革的演变和有效性。该研究利用距离衰减函数、浮动集水区(FCA)方法和哈夫模型,扩展了传统的地理分析,强调了教育质量在家长选择中的重要性,并提供了一种基于教育质量和旅行距离模拟当地需求的精细技术。总体而言,研究发现了教育资源的不平等现象,尽管人口密度较高,但幼教服务主要集中在中央商务区附近,而周边地区的幼教服务则严重不足。此外,预计 2026 年、2031 年和 2036 年的可达性得分较低,这凸显了对教育基础设施发展的迫切需求,即使在 2021 年被评为可达性较好的地区也是如此。
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引用次数: 0
When bike lanes are not enough: The role of connected low-stress cycling infrastructure on cycle commuting in urban Aotearoa New Zealand 当自行车道不够用时:在新西兰奥特亚罗瓦城市,连通的低压力自行车基础设施对自行车通勤的作用
IF 6 1区 经济学 Q1 URBAN STUDIES Pub Date : 2024-10-23 DOI: 10.1016/j.cities.2024.105526
Melissa Louise Smith, Xinyu Fu
Promoting bicycling is a shared aspiration among cities internationally in pursuit of sustainable urban development. However, while cities are increasingly investing in bike lanes, car dependency remains high. Existing empirical literature examining the reasons behind such a low conversion rate remains inconclusive and limited. In this study, we aim to address this gap by empirically investigating the quality of cycling infrastructure using the Level of Traffic Stress Framework and its relationship with cycling uptake using a case study of seven major cities in Aotearoa New Zealand. Specifically, we first developed a transferable method that combined the Level of Traffic Stress (LTS) framework and graph theory to spatially quantify the quality of cycling infrastructure, and then used Hurdle models to examine the relationship between the presence of low-stress cycling infrastructure and cycling uptake across these cities. We found that while the majority of the roads in these cities are low stress, they are poorly connected, and the greater provision of low-stress cycling infrastructure is associated with more people cycling to work. This study offers important empirical evidence for transport planners to inform decisions that enable longer-distance active commutes and foster broader public uptake of active travel in their communities.
推广自行车是国际城市追求可持续城市发展的共同愿望。然而,尽管城市越来越多地投资建设自行车道,但人们对汽车的依赖程度仍然很高。现有的实证文献对如此低的转换率背后的原因进行了研究,但仍然没有定论,而且数量有限。在本研究中,我们通过对新西兰奥特亚罗瓦的七个主要城市进行案例研究,利用交通压力水平框架对自行车基础设施的质量及其与自行车使用率的关系进行了实证调查,旨在填补这一空白。具体而言,我们首先开发了一种结合交通压力水平(LTS)框架和图论的可转移方法,对自行车基础设施的质量进行空间量化,然后使用赫尔德模型来研究低压力自行车基础设施的存在与这些城市的自行车使用率之间的关系。我们发现,虽然这些城市的大部分道路压力较低,但其连接性较差,而低压力自行车基础设施的增加与更多人骑自行车上班有关。这项研究为交通规划者提供了重要的经验证据,使他们能够做出明智的决策,实现更长距离的主动通勤,并在社区中促进更广泛的公众主动出行。
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引用次数: 0
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