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What do people want in a smart city? Exploring the stakeholders’ opinions, priorities and perceived barriers in a medium-sized city in the United States 人们在智慧城市里想要什么?探讨利益相关者的意见,优先事项和感知障碍在一个中等城市在美国
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-08-17 DOI: 10.1080/12265934.2021.1968939
Cristina Del-Real, C. Ward, Mina Sartipi
ABSTRACT Many cities in the United States are pursuing agendas to implement ICT-based solutions to tackle urban challenges, thus achieving the ‘smart city’ label. While the discussion on this urban development paradigm has revolved around the intensive use of technologies, the academic literature increasingly calls for shifting the focus to the people living in the cities. This paper argues that to achieve a people-centred smart city, cities should include the perspectives of all the local stakeholders. Under this assumption, this paper provides the views of the local stakeholders in a medium-sized city in Tennessee, Chattanooga. Particularly, this study explores their perceived smart city concept, the ethical standards that should guide smart city projects, the desired future projects in their community, and the barriers to implementing them. The data was collected using a combination of participatory budgeting, five focus groups, and twenty-eight interviews with city dwellers, entrepreneurs, university faculty, non-profit members, and government officials. The results suggest that, far from the image of a highly technological city, the stakeholders envision a city dedicated to improving the quality of life and environmental sustainability. Furthermore, to achieve this smart city, the projects need to be based on full transparency and the promotion of social inclusion. In contrast to the dominant trend towards the privatization of urban space, this study finds that the stakeholders prefer public based smart city projects such as ICT-based public transport services. However, its successful implementation will have to overcome the barriers caused by funding constraints, public acceptance, and political interests. Cities may use the results of this study to design more responsible smart city projects that strike an optimal point between citizen engagement and technological applications and innovations while supporting all stakeholders’ needs. Highlights Stakeholders’ opinions on smart city projects in Chattanooga were examined Chattanooga can be considered an example of a medium-sized smart city Public-based, transparent and socially inclusive projects are preferred Preferences on smart city projects varied across groups of stakeholders Including all city stakeholders’ visions can reduce social cleavages
美国的许多城市正在推进实施基于信息通信技术的解决方案以应对城市挑战的议程,从而获得“智慧城市”的标签。虽然关于这种城市发展模式的讨论一直围绕着技术的密集使用,但学术文献越来越多地呼吁将焦点转移到生活在城市中的人身上。本文认为,要实现以人为本的智慧城市,城市应该包括所有当地利益相关者的观点。在此假设下,本文以田纳西州中型城市查塔努加为例,提供了当地利益相关者的观点。特别是,本研究探讨了他们对智慧城市概念的感知,指导智慧城市项目的道德标准,他们社区期望的未来项目,以及实施这些项目的障碍。这些数据是通过参与式预算、五个焦点小组和28个对城市居民、企业家、大学教师、非营利组织成员和政府官员的访谈来收集的。结果表明,与高科技城市的形象不同,利益相关者设想的是一个致力于提高生活质量和环境可持续性的城市。此外,为了实现这一智慧城市,这些项目需要建立在充分透明和促进社会包容的基础上。与城市空间私有化的主导趋势相反,本研究发现,利益相关者更喜欢基于公共的智慧城市项目,如基于ict的公共交通服务。然而,它的成功实施将必须克服资金限制、公众接受和政治利益造成的障碍。城市可以利用这项研究的结果来设计更负责任的智慧城市项目,在公民参与与技术应用和创新之间达到最佳点,同时支持所有利益相关者的需求。重点利益相关者对查塔努加智慧城市项目的意见进行了研究查塔努加可以被认为是一个中型智慧城市的例子,以公共为基础,透明和社会包容性的项目是首选,对智慧城市项目的偏好在利益相关者群体中各不相同,包括所有城市利益相关者的愿景可以减少社会分裂
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引用次数: 15
Spatial dimension of climate change vulnerability and urbanization relationship in Nigeria 尼日利亚气候变化脆弱性与城市化关系的空间维度
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-07-20 DOI: 10.1080/12265934.2021.1956365
Cletus Famous Nwankwo, O. G. Ossai, R. U. Ayadiuno, C. Ikeogu
ABSTRACT The interaction between urbanization and climate change and their associated impact on human society is increasingly being documented. This study concerns the relationship between urbanization and climate change vulnerability. Specifically, it investigates the spatial aspect of the relationship between climate change vulnerability and urbanization in Nigeria. The study is vital because the relationship between urbanization and climate change in Africa has remained unclear. An exploration and comprehension of country-specific relationships in Africa have remained scarce. In Nigeria, efforts to research climate change vulnerability (CCV) have not looked at its connection with urbanization. Via an integrated vulnerability assessment and based on secondary data, the paper examines the effect of urbanization on climate change vulnerability. It argues that urbanization does not significantly increase CCV in Nigeria. It shows that urbanization and CCV have a significant negative relationship in Nigeria, suggesting that more urban states have lower levels of CCV than relatively more rural states. However, it indicates that relatively more urban states in Nigeria tend to have lower sensitivity and higher adaptive capacity to climate change, but there is no clear rural-urban difference in exposure to climate change. It follows that while there is a rural-urban disparity in CCV, individual components of vulnerability may exhibit a different relationship with urbanization. Thus, it concludes that the impact of climate change is dynamic and complex. Hence, there is a need to open the urbanization-climate change nexus to a lively debate to further climate change scholarship. Thus, while taking an all-inclusive approach to addressing climate change is desirable, it is vital also to explore the impacts of individual elements that comprise vulnerability.
城市化与气候变化之间的相互作用及其对人类社会的相关影响越来越多地被记录在案。本研究关注城市化与气候变化脆弱性之间的关系。具体而言,它调查了尼日利亚气候变化脆弱性与城市化之间关系的空间方面。这项研究至关重要,因为非洲城市化与气候变化之间的关系尚不清楚。对非洲具体国家关系的探索和理解仍然很少。在尼日利亚,研究气候变化脆弱性的努力没有考虑到它与城市化的联系。通过综合脆弱性评估并基于二次数据,本文考察了城市化对气候变化脆弱性的影响。它认为,尼日利亚的城市化并没有显著增加CCV。研究表明,尼日利亚的城市化和CCV存在显著的负相关关系,这表明更多的城市州的CCV水平低于相对更多的农村州。然而,它表明,尼日利亚相对较多的城市州往往对气候变化的敏感性较低,适应能力较高,但在气候变化的暴露程度上没有明显的城乡差异。由此可见,虽然CCV存在城乡差异,但脆弱性的各个组成部分可能与城市化表现出不同的关系。因此,它得出的结论是,气候变化的影响是动态和复杂的。因此,有必要对城市化与气候变化的关系展开激烈的辩论,以推动气候变化研究。因此,尽管采取包容各方的方法应对气候变化是可取的,但探索构成脆弱性的个别因素的影响也至关重要。
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引用次数: 9
Unequal welfare costs of staying at home across socioeconomic and demographic groups 不同社会经济和人口群体呆在家里的福利成本不平等
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-07-12 DOI: 10.1080/12265934.2021.1951822

ABSTRACT

Using daily census block group level data from the U.S., this paper investigates the welfare costs of staying at home due to COVID-19 across socioeconomic and demographic groups. The investigation is based on an economic model of which implications suggest that the welfare costs of staying at home increase with the stay-at-home probabilities of individuals. The empirical results provide evidence for significant heterogeneity across census block groups regarding the welfare effects of staying at home. This heterogeneity is further used to obtain measures of welfare changes for different socioeconomic and demographic groups at the national level.

摘要本文利用美国每日人口普查分组水平的数据,调查了不同社会经济和人口群体因COVID-19而呆在家里的福利成本。这项调查基于一个经济模型,该模型的含义表明,呆在家里的福利成本随着个人呆在家里的概率的增加而增加。实证结果表明,在不同的人口普查群体中,留守家庭的福利效应存在显著的异质性。这种异质性进一步被用来衡量国家层面上不同社会经济和人口群体的福利变化。
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引用次数: 3
Editorial 编辑
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-07-03 DOI: 10.1080/12265934.2021.1956715
D. Janssens, C. Joh
The COVID-19 pandemic has been (and at this moment still is) a global health crisis which impacted the life of so many of us. Not only the medical footprint of this pandemic was enormous, also its mental-health fallout will take us many more years to understand in full detail. Also the societal impacts and behavioural patterns of the post COVID-19 era are still hard to foresee. Several scholars believe that the fallout of the crisis is expected to fundamentally change business industries and customers’ needs. With this in mind, the International Journal of Urban Sciences has launched a special issue related to the behavioural change of activities and travel in response to the pandemic disease. Indeed, mobility patterns and transport are simply a derived demand, i.e. derived from activities we do, and if society is to change fundamentally, also mobility will follow this evolution without any doubt. We are proud to present to you in this special issue a selection of seven papers, which went through a rigorous blind review process, nicely illustrating the aforementioned societal and behavioural changes due to COVID-19. A summary of the different contributions is mentioned below. In a first paper, Abbas Ziafati Bafarasat conducted a meta-analysis of COVID-19 lessons to primarily characterize the application of anticontagion strategies that are situated in their contextual specifications. To guide prior preparations for future application of pandemic management strategies, this paper nicely consolidates lessons learned in implementation of situated strategies and proposes preparations at the national level for elimination, at the local/community level for suppression, and at the regional level for mitigation. After that, the paper by Muhammad Ahsanul Habib and Md Asif Hasan Anik examined the long-term impacts of COVID-19 using an integrated transport and land-use modelling system. Specific behavioural attributes of households associated with and without a COVID-19 scenario are modelled and simulated up to year 2030 within an integrated transport, land-use and energy model. Apart from the metrological and technical contributions, the results of this study will offer transport and land-use planners insights into how households’ long-term decision making may evolve in the future due to the COVID-19 crisis and help develop policies to continue focusing on the sustainability goals for communities. In a first study from the United States, Hakan Yilmazkuday investigated the welfare costs of staying at home due to COVID-19 across socio-economic and demographic groups using daily census block group level data from the U.S.A. The empirical results provide evidence for significant heterogeneity across census block groups regarding the welfare effects of staying at home. This heterogeneity is further used to obtain measures of welfare changes for different socioeconomic and demographic groups at the national level. Furthermore, in a study conducted by Jody Liu, J
新冠肺炎大流行一直是(现在仍然是)一场全球健康危机,影响了我们许多人的生活。这场大流行不仅对医疗造成了巨大影响,而且对心理健康的影响还需要我们多年的时间才能全面了解。此外,后新冠肺炎时代的社会影响和行为模式仍然难以预测。几位学者认为,这场危机的余波预计将从根本上改变商业行业和客户的需求。考虑到这一点,《国际城市科学杂志》推出了一期特刊,内容涉及应对新冠疫情时活动和旅行的行为变化。事实上,流动模式和运输只是一种衍生的需求,即衍生自我们所做的活动,如果社会要发生根本性的变化,流动性也将毫无疑问地遵循这种演变。我们很荣幸在本期特刊中向您展示七篇论文,这些论文经过了严格的盲审过程,很好地说明了上述新冠肺炎导致的社会和行为变化。下文概述了不同的贡献。在第一篇论文中,Abbas Ziafati Bafarasat对新冠肺炎的教训进行了元分析,主要描述了背景规范中反接触策略的应用。为了指导疫情管理战略未来应用的前期准备工作,本文很好地总结了在实施情境战略中吸取的经验教训,并建议在国家一级为消除疫情、在地方/社区一级为抑制疫情和在区域一级为缓解疫情做准备。之后,Muhammad Ahsanul Habib和Md Asif Hasan Anik的论文使用综合交通和土地利用建模系统研究了新冠肺炎的长期影响。在交通、土地使用和能源综合模型中,对与新冠肺炎情景相关和不相关的家庭的具体行为特征进行建模和模拟,直到2030年。除了计量和技术贡献外,这项研究的结果将为交通和土地使用规划者提供关于家庭的长期决策在未来如何因新冠肺炎危机而演变的见解,并有助于制定政策,继续关注社区的可持续发展目标。在美国的第一项研究中,Hakan Yilmazkuday使用美国人口普查区块组层面的每日数据,调查了社会经济和人口统计群体因新冠肺炎而留在家中的福利成本。实证结果为人口普查区块组之间关于留在家中福利影响的显著异质性提供了证据。这种异质性被进一步用于衡量国家层面不同社会经济和人口群体的福利变化。此外,在Jody Liu、James Gross和Jaehyun Ha进行的一项研究中,美国大陆3108个县的GPS定位数据被用于评估新冠肺炎大流行期间收入和超市供应对旅行减少的影响。具体而言,作者发现旅行频率和距离的减少与收入中位数和超市密度呈负相关。作者得出结论,坚持呆在家里的个人选择较少依赖于封锁措施,更多地受到经济能力和获得必要商品和服务的影响。
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引用次数: 0
Examining the long term impacts of COVID-19 using an integrated transport and land-use modelling system 利用综合运输和土地利用建模系统研究COVID-19的长期影响
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-07-03 DOI: 10.1080/12265934.2021.1951821
M. A. Habib, Md Asif Hasan Anik
ABSTRACT This paper investigates the long-term impacts of COVID-19 on transport and land-use systems through understanding changes in households’ long-term choices, such as residential location choice, travel tool ownership and type choice. For that, it first develops two possible scenarios, which are, (i) without COVID-19 pandemic, (ii) with COVID-19 pandemic. Specific behavioural attributes of households associated with each scenario are modelled and simulated up to the year 2030 within an integrated transport, land-use and energy (iTLE) model. iTLE is an agent-based microsimulation model developed for Nova Scotia, Canada. Results show that, if COVID-19 persists, most people who do not own a car will continue restraining themselves from purchasing one up to the year 2027. Most households having heads aged between 30 and 75 years and a yearly income above $100,000 will purchase new vehicles in year 2022, making the vehicle purchase rate doubled in the province. In terms of vehicle type choice decision, the use of SUVs will increase by 25% and 27% by 2025 and 2030, respectively, compared to year 2020. The pandemic will cause a 0%–74% increase in vehicle ownership in suburban areas by 2030. Additionally, the ability to ‘work from home’ and online school facilities may influence people to live further away from downtown. The results of this study will offer transport and land-use planners insights into how households’ long-term decision making may evolve in the future due to the COVID-19 crisis and help develop policies to continue focusing on the sustainability goals for communities.
摘要本文通过了解家庭长期选择的变化,如居住地点选择、出行工具所有权和类型选择,研究了新冠肺炎对交通和土地使用系统的长期影响。为此,它首先开发了两种可能的情景,即(i)没有新冠肺炎大流行,(ii)有新冠肺炎大流行。在交通、土地使用和能源综合模型(iTLE)中,对与每种情景相关的家庭的具体行为特征进行建模和模拟,直到2030年。iTLE是为加拿大新斯科舍省开发的一个基于代理的微观模拟模型。结果显示,如果新冠肺炎持续,大多数没有汽车的人将继续限制自己购买汽车,直到2027年。大多数户主年龄在30至75岁之间、年收入超过10万美元的家庭将在2022年购买新车,使该省的购车率翻了一番。在车型选择决策方面,到2025年和2030年,SUV的使用量将分别比2020年增加25%和27%。到2030年,疫情将使郊区的汽车保有量增加0%-74%。此外,“在家工作”和在线学校设施的能力可能会影响人们住在离市中心更远的地方。这项研究的结果将为交通和土地使用规划者提供关于新冠肺炎危机导致的家庭长期决策在未来可能如何演变的见解,并有助于制定政策,继续关注社区的可持续发展目标。
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引用次数: 14
Is travel behaviour an equity issue? Using GPS location data to assess the effects of income and supermarket availability on travel reduction during the COVID-19 pandemic 旅行行为是一个公平问题吗?利用GPS定位数据评估COVID-19大流行期间收入和超市可用性对减少旅行的影响
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-07-03 DOI: 10.1080/12265934.2021.1952890
Jody Liu, James J. Gross, J. Ha
ABSTRACT With recent research identifying mobility restrictions for alleviating the spread of COVID-19, governments have implemented stay-at-home measures, which in turn produced significant changes in people's travel behaviours. Despite these orders, however, people still have to make trips for work or to acquire essential goods. To better understand how these necessary trips influenced changes in individual mobility due to the pandemic, this study focused on the relationship between trip frequency and distance to median incomes, as well as between trip frequency and distance to supermarket density. We made use of the University of Maryland COVID-19 Impact Analysis Platform as our primary source for GPS travel data to study mobility changes at the county-level across the U.S.A. Results showed that trip frequency and distance were significantly different before the outbreak of COVID-19 and during three peak periods of COVID-19 infection. Specifically, we found the reduction of both frequency and distance of trips is negatively correlated to both median income and supermarket density. Thus we conclude that individual choice in adherence to staying-at-home is less dependent on the lockdown measures and more influenced by financial capacity and access to necessary goods and services. These findings could help inform policy development and programmatic responses to help people reduce their mobility. For example, government authorities might consider monthly stimulus or other financial support programs that would allow people greater access to delivery services. In the future, urban planners and policymakers should address the root causes that lead to such economic disparities and food insecurities, in order to build resilience in the face of possible future pandemics.
最近的研究发现,限制流动可以缓解COVID-19的传播,各国政府纷纷实施居家措施,这反过来又使人们的旅行行为发生了重大变化。然而,尽管有这些命令,人们仍然不得不出差或购买必需品。为了更好地理解这些必要的旅行是如何影响疫情导致的个人流动性变化的,本研究重点研究了旅行频率与到收入中位数的距离之间的关系,以及旅行频率与到超市密度的距离之间的关系。我们利用马里兰大学新冠肺炎影响分析平台作为主要数据来源,对美国各县的出行数据变化进行了研究。结果表明,在新冠肺炎疫情爆发前和三个感染高峰期,出行频率和距离存在显著差异。具体来说,我们发现出行频率和距离的减少与收入中位数和超市密度呈负相关。因此,我们得出的结论是,个人选择是否留在家中不受封锁措施的影响较小,而更多地受到经济能力和获得必要商品和服务的影响。这些发现有助于为政策制定和方案应对提供信息,以帮助人们减少流动性。例如,政府当局可以考虑每月刺激计划或其他财政支持计划,使人们能够更多地获得送货服务。未来,城市规划者和决策者应解决导致这种经济差距和粮食不安全的根本原因,以便在未来可能出现的大流行病面前建立复原力。
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引用次数: 7
Meta-synthesis of COVID-19 lessons: charting sustainable management of future pandemics 2019冠状病毒病经验的综合:描绘未来大流行的可持续管理
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-07-03 DOI: 10.1080/12265934.2021.1936136
Abbas Ziafati Bafarasat
ABSTRACT Development of the COVID-19 vaccines has been creating a lot of hope for an ultimate return to normality, but returning to normality as we had before would mean we will continue to ignore life-ravaging lessons, as we did for severe acute respiratory syndrome, Ebola, and Middle East respiratory syndrome. This meta-synthesis of COVID-19 lessons charts sustainable pandemic management in terms of choosing strategies that are situated in their contextual specifications and beginning preparations for future application of such strategies from now. To guide selection of a situated strategy, the paper provides a comprehensive list of epidemiological determinants (e.g. communicativeness, poverty, supply chain, density, wind, remoteness); consolidates knowledge about strategies of elimination, suppression and mitigation; and proposes a quantified SWOT analysis of epidemiological determinants that produces coordinates for strategy identification in a Cartesian plane divided into twelve strategy quarters. To guide prior preparations for future application of pandemic management strategies, the paper consolidates lessons learned in implementation of situated strategies and proposes preparations at the national level for elimination, at the local/community level for suppression, and at the regional level for mitigation. Highlights Lessons of COVID-19 (coronavirus) chart sustainable management of future pandemics Epidemiological determinants and their mechanisms of impact are listed Knowledge about elimination, suppression and mitigation strategies is consolidated A quantified SWOT and Cartesian plane enable selecting context-specific strategies Preparations for future elimination, suppression and mitigation are listed
COVID-19疫苗的开发为最终恢复正常带来了很多希望,但像以前那样恢复正常意味着我们将继续忽视破坏生命的教训,就像我们对严重急性呼吸综合征、埃博拉和中东呼吸综合征所做的那样。这一综合COVID-19经验教训的综合规划了可持续大流行管理,包括选择符合具体情况的战略,并从现在开始为今后应用此类战略做准备。为了指导选址战略的选择,本文提供了流行病学决定因素的综合清单(例如,沟通性、贫困、供应链、密度、风、偏远);巩固关于消除、抑制和缓解战略的知识;并提出了流行病学决定因素的量化SWOT分析,该分析在笛卡尔平面上生成了十二个战略区域的战略识别坐标。为了指导今后应用大流行病管理战略的事先准备工作,该文件总结了在实施就地战略方面取得的经验教训,并提出了在国家一级为消除、在地方/社区一级为抑制和在区域一级为缓解进行准备的建议。列出了未来流行病的流行病学决定因素及其影响机制。整合了有关消除、抑制和缓解策略的知识。通过量化的SWOT和笛卡尔平面,可以选择针对具体情况的策略。列出了未来消除、抑制和缓解的准备工作
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引用次数: 2
How did travel mode choices change according to Coronavirus Disease 2019? Lessons from Seoul, South Korea 2019冠状病毒疫情如何改变出行方式?来自韩国首尔的教训
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-07-03 DOI: 10.1080/12265934.2021.1951823
M. Kim, Jiwon Lee, T. Gim
ABSTRACT The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic is believed to have substantially changed travel mode choices. While current urban transit policies and plans aim at higher public transit ridership, the negative perception that transit is unsafe increases in line with the spread of Coronavirus Disease 2019 (COVID-19) because of its higher risk in cases in which so-called 3C conditions are met: crowded areas, close-contact settings, and closed places. Thus, this study empirically examines how the perception of urban spaces changed by COVID-19 and how it influenced the choice of travel modes, accordingly, in the Seoul Metropolitan Area, South Korea. A structural equation model presents that changes in individual cognition and positive perception of policy changes during COVID-19 changes their perception of multi-use facilities negatively compared to before the COVID-19 outbreak. The negative perception is found to result in changes in travel mode choices by decreasing public transit ridership. Analytical findings show that intrinsic utility (i.e. risk perception) is revealed as a major determinant to understand travel mode choice. Also, in relation to the limitations of the current metropolitan transit system, the findings provide policy implications in the aspect of preventive measures and promoting micro-mobility for post-COVID-19 transit. Highlights The behavioural change under the pandemic is caused by fear of infection. Risk perception on public transit is affected negatively due to COVID-19. The increased risk perception leads to a reduction in public transit use. Risk perception is a major determinant to understand travel mode choice. Promoting micro-mobility will enhance the city's resilience during a pandemic.
严重急性呼吸综合征冠状病毒2 (SARS-CoV-2)大流行被认为大大改变了人们的旅行方式选择。虽然目前的城市交通政策和计划旨在提高公共交通客流量,但随着2019年冠状病毒病(COVID-19)的传播,认为交通不安全的负面看法也在增加,因为在满足所谓的3C条件(拥挤地区、密切接触环境和封闭场所)的情况下,交通不安全的风险更高。因此,本研究以韩国首尔都市圈为例,实证研究了对城市空间的看法如何因COVID-19而改变,以及它如何影响人们对出行方式的选择。结构方程模型表明,与疫情前相比,疫情期间个体对政策变化的认知和积极感知的变化使其对多用途设施的认知发生了负向变化。研究发现,负面认知通过减少公共交通客流量而导致出行方式选择的变化。分析结果表明,内在效用(即风险感知)是理解出行方式选择的主要决定因素。此外,针对当前城市交通系统的局限性,研究结果在预防措施和促进covid -19后交通微流动性方面提供了政策启示。大流行期间的行为改变是由于害怕感染造成的。新冠肺炎疫情对公共交通风险认知产生负面影响。风险意识的增强导致公共交通的使用减少。风险感知是理解出行方式选择的主要决定因素。促进微流动将增强城市在大流行期间的抵御能力。
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引用次数: 16
The influence of urbanicity and built environment on the frequency of distracted driving-related crashes: a multi-state comparison 城市化和建成环境对分心驾驶相关碰撞频率的影响:一个多状态比较
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-06-30 DOI: 10.1080/12265934.2021.1946418
Youngbin Lym, Seunghoon Kim, Zhenhua Chen
ABSTRACT This study investigates the influence of different levels of urbanization, built environment, and socio-demographic features on the frequency of vehicle crashes associated with distracted driving (DD). Through a multi-state comparison, the statistical linkage between the frequency of crashes related to DD and the influential factors was examined using county-level data for the period 2013-2017 in six states in the U.S. The results show that the frequency (relative risk) of crashes caused by DD tends to be higher in certain built environments, such as areas with high population density, whereas it is relatively lower on freeways and areas of a high level of traffic intensity. In addition, the influence of contributing factors such as urbanicity and age cohorts on the relative risks of crashes appears to vary among different states as well as severity levels. Such a discrepancy may reflect differences in driving behaviours and levels of urbanization across states. These findings provide important policy implications for transportation planners and decision-makers to customize targeted policy considerations to improve transportation safety and public health in response to distracted driving. Highlights The effect of urbanicity on the risk of distraction-affected crashes was examined. Six states in the U.S. were considered for comparison. The influence of built environment reveals state-specific variability. The risks of distracted driving-related crashes differ across age cohorts. The study addresses several policy implications to improve transportation safety.
摘要本研究调查了不同城市化水平、建筑环境和社会人口特征对分心驾驶(DD)相关车祸频率的影响。通过多州比较,使用美国六个州2013-2017年的县级数据,检验了与DD相关的车祸频率与影响因素之间的统计联系。结果表明,在某些建筑环境中,DD引起的车祸频率(相对风险)往往更高,如人口密度高的地区,而在高速公路和交通强度高的地区则相对较低。此外,城市化和年龄组等因素对车祸相对风险的影响在不同的州以及严重程度之间似乎有所不同。这种差异可能反映了各州在驾驶行为和城市化水平方面的差异。这些发现为交通规划者和决策者定制有针对性的政策考虑提供了重要的政策启示,以改善交通安全和公众健康,应对分心驾驶。重点研究了城市化对分心事故风险的影响。对美国的六个州进行了比较。建筑环境的影响揭示了特定状态的可变性。分心驾驶相关车祸的风险因年龄组而异。该研究涉及改善运输安全的几个政策影响。
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引用次数: 1
How different patterns of urbanization affect regional innovation? Evidence from Russia 不同的城市化模式如何影响区域创新?来自俄罗斯的证据
IF 2.9 3区 工程技术 Q2 ENVIRONMENTAL STUDIES Pub Date : 2021-06-21 DOI: 10.1080/12265934.2021.1942165
S. Tripathi, E. Kutsenko, V. Boos
ABSTRACT The present paper assesses the impact of general urbanization and urbanization patterns (the number of cities of a certain size in the region) on different phases of the regional innovation process: knowledge creation, implementation, and production of innovation production. Knowledge creation is measured by patent statistics, knowledge implementation – by the share of innovative organizations, innovation production – by the volume of innovation production produced by industrial organizations. We apply the dynamic panel data model technique by using data from the period of 1998 to 2016. Our results suggest that general urbanization has a positive influence on every stage of the innovation process, while the impact of different urbanization patterns varies depending on its stage. Million plus cities affect knowledge creation in the region but have no considerable impact on knowledge implementation and innovation production. At the same time, the presence of cities with a population from 0.5 million to 1 million people in the region positively influences more mature stages of the innovation process: knowledge implementation and manufacturing of innovation production. So far as the effective innovation development demands complete innovation cycle, not only million plus cities should be considered as the main drivers of innovation, but cities of lower size (at least with population from 0.5 million to 1 million people) as well should attend the innovation agenda.
摘要本文评估了一般城市化和城市化模式(区域内一定规模的城市数量)对区域创新过程不同阶段的影响:知识创造、实施和创新生产。知识创造是通过专利统计、知识实施(以创新组织的份额衡量)、创新生产(以产业组织的创新生产量衡量)来衡量的。我们利用1998年至2016年的数据,应用了动态面板数据模型技术。我们的研究结果表明,一般城市化对创新过程的每个阶段都有积极影响,而不同城市化模式的影响因其阶段而异。数以百万计的城市影响着该地区的知识创造,但对知识实施和创新生产没有显著影响。与此同时,该地区人口在50万至100万之间的城市的存在对创新过程中更成熟的阶段产生了积极影响:知识实施和创新生产的制造。就有效的创新发展需要完整的创新周期而言,不仅百万以上的城市应该被视为创新的主要驱动力,规模较小的城市(至少人口在50万至100万之间)也应该参与创新议程。
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引用次数: 3
期刊
International Journal of Urban Sciences
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