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Comparing City Size Distributions: Population vs. Economic Activity 比较城市规模分布:人口与经济活动
Pub Date : 2021-09-29 DOI: 10.2139/ssrn.3933838
Miguel Puente-Ajovín, Marcos Sanso-Navarro, María Vera-Cabello
This paper compares the size distribution of cities when they are measured in both demographic and economic terms. In doing so, we have exploited more recent and accurate nighttime lights data than those previously used to proxy urban economic activity. Our results for a sample covering 12,852 urban centres in 100 countries show that economic activity is more unevenly distributed than population. There is weak evidence for Zipf's law in aggregate urban night lights, especially in medium and low income countries. Our findings do not support a Pareto distribution for city sizes measured in economic terms.
本文比较了城市在人口和经济两方面的规模分布。在这样做的过程中,我们利用了比以前用来代表城市经济活动的更最新、更准确的夜间灯光数据。我们对100个国家的12,852个城市中心进行了抽样调查,结果表明,经济活动的分布比人口分布更不均匀。Zipf定律在城市夜间照明总量方面的证据不足,尤其是在中低收入国家。我们的研究结果不支持以经济角度衡量城市规模的帕累托分布。
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引用次数: 0
The Road to Integration: Post-Migration Experience and Migrant Housing Behavior in Singapore 融合之路:新加坡移民后的经验与移民住房行为
Pub Date : 2020-12-30 DOI: 10.2139/ssrn.3772823
Yi Fan, H. Teo, Yong Tu, Wayne Xinwei Wan
This study investigates the impact of migrants’ post-migration experiences on their integration and housing behaviors. Collaborating with a local town council, we surveyed 1,128 households living in Singapore public housing estates and constructed instrumental variables to resolve identification problems. Two sets of empirical findings are established. First, migrants with more extended periods of post-migration residency demonstrate higher integration levels, both spatially and socially. With 1 more year of residency, migrant renters select housing in areas up to 3.01% farther from their workplace, physically and spatially making a way into the host society. Migrant homeowners show stronger social integration than migrant renters, based on both subjective and objective social integration measures. Second, in the public open rental housing market, where migrants in their early post-migration years typically reside, migrant renters pay rents that are lower by up to 0.67% with 1 more year of post-migration residency. A further test shows that a more extended post-migration residency period increases a migrant’s housing search and bargaining power for lower rent due to integration. Our empirical evidence indicates the significance of early years’ post-migration experiences in shaping integration and the importance of integration policy in assisting new migrants.
本研究探讨移民后迁移经历对其融入与居住行为的影响。我们与当地镇议会合作,调查了居住在新加坡公共住宅小区的1128户家庭,并构建了工具变量来解决识别问题。建立了两组实证结果。首先,移民后居住时间越长的移民,在空间和社会上都表现出更高的融合水平。在当地居住1年后,外来务工人员选择的住房距离工作地点最远可达3.01%,从物质上和空间上都进入了当地社会。从主观和客观的社会整合指标来看,住房移民比租房移民表现出更强的社会整合。其次,在公共开放的租赁住房市场上,移民通常在移民后的早期居住,移民租房者支付的租金在移民后居住1年以上,最高可降低0.67%。进一步的测试表明,更长的移民后居住时间增加了移民的住房搜索和议价能力,因为融合而降低租金。我们的经验证据表明,移民后的早期经历在形成融合方面的重要性,以及融合政策在帮助新移民方面的重要性。
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引用次数: 0
Regional Housing Market Conditions in Spain 西班牙区域住房市场状况
Pub Date : 2020-10-29 DOI: 10.2139/ssrn.3724178
A. Galesi, Nuria Mata, David M. Rey, S. Schmitz, Johannes Schuffels
Selling homes is not easy. Home sellers usually need to apply a price discount to swiftly close a deal, and more so when housing market activity is low. Using detailed data on home listings and transactions in Spain, we provide unique estimates of the price discount across regional submarkets and time. We document that the price discount is strongly countercylical, as it increases with declining market conditions, and viceversa during upturns. Despite substantial heterogeneity, regional price discounts are synchronized and a single common factor can account for about sixty percent of their variation, thus suggesting the existence of a national housing cycle. Finally, we document that the main factors linked to changes in the price discount are developments in income, population, and interest rates, which are jointly able to explain the bulk of variation in housing market liquidity across regions and time. Besides providing a formal test of the performance of the price spread in gauging housing market liquidity, this study conveys practical information to real estate market participants, policymakers, and financial institutions for which assessing conditions in Spanish housing markets is a central task.
卖房子并不容易。房屋卖家通常需要使用价格折扣来迅速完成交易,当房地产市场活动低迷时更是如此。使用西班牙房屋上市和交易的详细数据,我们提供跨区域子市场和时间的价格折扣的独特估计。我们的文件表明,价格折扣是强烈的反周期的,因为它随着市场条件的下降而增加,反之亦然。尽管存在很大的异质性,但区域价格折扣是同步的,一个共同因素可以解释其变化的大约60%,从而表明存在一个全国性的住房周期。最后,我们证明了与价格折扣变化相关的主要因素是收入、人口和利率的发展,这些因素共同能够解释住房市场流动性在不同地区和时间的大部分变化。除了提供衡量住房市场流动性的价格价差表现的正式测试外,本研究还向房地产市场参与者、政策制定者和金融机构传达了实用信息,对这些机构来说,评估西班牙住房市场的状况是一项核心任务。
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引用次数: 1
Evidence-based COVID-19 Response in Ethiopia: A quasi-Experimental Study on Social Distancing 埃塞俄比亚基于证据的COVID-19应对:社交距离准实验研究
Pub Date : 2020-10-25 DOI: 10.2139/ssrn.3718791
Yalemzewd Nigussie, Tefferi Ghebray Enday, Mintesinot Adinew, M. Seyeneh
Public transport and attending social events are becoming a stumbling block to maintain a safe social distancing in the fight against COVID-19. We developed a quasi-experiment that involves a tradeoff between economic outcomes over social distancing in some natural settings. The results show that about 58% of subjects prefer to break the social distancing rule and choose the most unsafe public transport. As a result, we further tried to understand the determinant factors of practicing social distancing using a binary probit model. The results show that a relatively lower income, and lower education level are significant and positively influence the decision to practice the social distancing rule which is contrary to the existed literature. The second experiment was devoted to understanding the effect of framing media message on subject’s decision to take part in a social event. The results show that there is no statistically significant difference in decisions between the treatment (those who received a loss framed message) and control (those who received the gain COVD related media message) groups. However, we find a strong association between social participation and decision to take part in social events.
公共交通和参加社交活动正在成为新冠疫情防控中保持安全社交距离的绊脚石。我们开发了一个准实验,涉及在一些自然环境中经济结果与社会距离之间的权衡。结果显示,约58%的受试者更愿意打破社交距离规则,选择最不安全的公共交通工具。因此,我们进一步尝试使用二元概率模型来理解实践社会距离的决定因素。结果表明,相对较低的收入和较低的受教育程度显著且正影响着实践社会距离规则的决定,这与现有文献相反。第二个实验致力于理解框架媒体信息对被试决定参与社会活动的影响。结果显示,治疗组(收到损失框架信息的组)和对照组(收到增益COVD相关媒体信息的组)在决策上没有统计学上的显著差异。然而,我们发现社会参与和决定参加社会活动之间有很强的联系。
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引用次数: 0
Industrial Structure and a Tradeoff between Productivity and Resilience 产业结构与生产力与弹性的权衡
Pub Date : 2020-09-30 DOI: 10.2139/ssrn.3702545
S. Shutters, Keith Waters
We analyze how a region’s industrial structure affects its productivity and its resilience to shocks. Using co-occurrence analysis, we construct an interdependence network of U.S. industries. For each U.S. metropolitan area, we then calculate an aggregate metric of this network called economic tightness, which captures the interconnectedness among a region’s industries. We find that tightness is positively correlated with economic productivity but negatively correlated with a region’s change in productivity following the Great Recession, revealing a tradeoff between higher productivity and higher resilience. We further find that productivity is higher in metropolitan areas with industry pairs that rarely occur together.
我们分析了一个地区的产业结构如何影响其生产率和抗冲击能力。运用共现分析法,构建了美国产业的相互依存网络。对于美国的每个大都市,我们计算了这个网络的总体指标,称为经济紧度,它捕捉了一个地区工业之间的相互联系。我们发现,紧缩与经济生产率呈正相关,但与大衰退后地区生产率变化呈负相关,揭示了生产率提高与弹性提高之间的权衡关系。我们进一步发现,在产业配对很少同时出现的大都市地区,生产率更高。
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引用次数: 4
Choice of Policy Instruments with Endogenous Quality: Per-passenger and Per-flight Airport Charges in Japan 具有内生质量的政策工具选择:日本机场按乘客和按航班收费
Pub Date : 2020-08-21 DOI: 10.2139/ssrn.3364019
Naoshi Doi
This study empirically investigates how two types of airport charges (per-passenger and per-flight) differentially affect airfares, service quality (flight frequency), and welfare. A structural model endogenizing airfares and flight frequency is estimated with data on Japanese domestic routes and then used for simulation analyses. The results reveal that per-passenger charges significantly raise airfares, with an average pass-through rate of 97.5 percent, and reduce flight frequency. Per-flight charges decrease flight frequency but have little effect on airfares. On nearly 80 percent of the routes in the sample, per-flight charges are socially preferred to per-passenger charges. The small portion (approximately 20 percent) of routes on which per-passenger charges are preferred include the largest routes. Consequently, per-passenger charges become socially preferred from the perspective of total surplus aggregated over all routes. It is also found that when flight frequency is treated as exogenous, the preferred form of charge could be reversed.
本研究实证调查了机场收费的两种类型(每乘客和每航班)对机票价格、服务质量(航班频率)和福利的不同影响。利用日本国内航线的数据,估计了一个内因机票价格和航班频率的结构模型,并将其用于仿真分析。结果显示,人均收费显著提高了机票价格,平均通过率为97.5%,并减少了航班频率。单次收费降低了航班频率,但对机票价格影响不大。在样本中近80%的航线上,按航班收费比按乘客收费更受社会青睐。按乘客收费的一小部分(约20%)路线包括最大的路线。因此,从所有路线的总盈余来看,每乘客收费成为社会首选。研究还发现,当飞行频率被视为外生时,首选的电荷形式可以被逆转。
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引用次数: 2
Influence of Environmental Facilities on Resident's Satisfaction in Private Housing Estates in Enugu Nigeria 环境设施对尼日利亚埃努古私人住宅小区居民满意度的影响
Pub Date : 2020-06-25 DOI: 10.2139/ssrn.3530010
C. Umeora
This study was inspired by an aspiration to examine the private housing developers commitment to design and construct estates in environments that have necessary facilities. The paper aims to assess the relative satisfaction level conveyed by the residents of private housing estates in Enugu, in the hope that the results would advance the design of such environments. The results of hypothesis tested show that environmental facilities have a significant effect on residents satisfaction. Analysis model of spearman rho correlation analysis showed a correlation coefficient value of 0.085 with a significance probability point of 0.023. This implies a weak relationship exists between the environmental facilities and residents satisfaction. Furthermore, the significance probability point of 0.023 shows it is significant. This finding shows that these environmental variables- mode of refuse disposal, state of roads within the estate, sanitization level, Recreation Park indeed represent the important factors that influence overall residents satisfaction. The paper concluded that by integrating the subjective assessments of the residents with developers/planners objective criteria, the shortcomings that produce dissatisfaction be annihilated. Residents satisfaction in private housing estates in the study area and future private housing projects, can be enhanced through the provision of environmental facilities and the facilities functioning well in the housing estates.
这项研究的灵感来自于对私人房屋发展商在有必要设施的环境中设计和建造屋苑的承诺的研究。本文旨在评估埃努古私人住宅小区居民的相对满意度,希望研究结果能够推动此类环境的设计。假设检验结果表明,环境设施对居民满意度有显著影响。spearman rho相关分析模型显示相关系数值为0.085,显著性概率点为0.023。这意味着环境设施与居民满意度之间存在弱关系。显著性概率点为0.023表示显著性。这一发现表明,这些环境变量——垃圾处理方式、小区内道路状况、卫生水平、游憩公园确实是影响居民整体满意度的重要因素。本文的结论是,通过将居民的主观评价与发展商/规划者的客观标准相结合,可以消除产生不满的缺点。研究区内的私人屋苑及未来的私人屋苑项目,可透过提供环保设施及设施运作良好,提高居民对屋苑的满意程度。
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引用次数: 1
Surviving COVID-19: Recovery Curves of Mall Traffic in China 在新冠肺炎中生存:中国商城流量恢复曲线
Pub Date : 2020-05-28 DOI: 10.2139/ssrn.3613294
Cheng He, Tong Wang, Xiaopeng Luo, Zhenzhi Luo, J. Guan, Haojun Gao, Keyan Zhu, lu feng, Yuehao Xu, Yuan Cheng, Y. Hu
The outbreak of COVID-19 has caused huge disruptions to the world economy. As a number of countries make progress in containing this outbreak, some of them have started to reopen their economy. We study the curves of recovery after reopening the economy, using a unique real-time dataset of daily customer traffic of 463 malls from 88 cities in China. Our results demonstrate that 9 weeks after reopening the economy, mall traffic has recovered to 64.0% of its level before this outbreak. In addition, the progress of containing this outbreak, such as reporting zero new local cases and clearing all existing cases, could significantly boost the recovery of mall traffic. Furthermore, We find that the recovery follows different curves across different cities, and this heterogeneity can be explained by pandemic situations, city tiers and city characteristics such as population, GDP, industrial structure, etc. More specifically, faster recovery speeds are observed in cities with better pandemic situations, lower city tiers, smaller migrant population, lower proportion of tertiary industry, higher proportion of secondary industry and higher GDP per capita.
新冠肺炎疫情给世界经济带来巨大冲击。随着一些国家在控制疫情方面取得进展,其中一些国家已开始重新开放经济。我们使用来自中国88个城市的463家商场的每日客流量的独特实时数据集,研究了经济重新开放后的复苏曲线。我们的研究结果表明,在重新开放经济9周后,商场客流量已恢复到疫情前的64.0%。此外,遏制疫情的进展,如报告零新发本地病例和清除所有现有病例,可大大促进商场交通的恢复。此外,我们发现不同城市的复苏遵循不同的曲线,这种异质性可以用疫情、城市等级和城市特征(如人口、GDP、产业结构等)来解释。具体而言,在疫情较好、城市层级较低、流动人口较少、第三产业比重较低、第二产业比重较高、人均国内生产总值较高的城市,恢复速度较快。
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引用次数: 0
Assessment of Shopping Mall Customers’ Experience through Criteria of Attractiveness in Tier-II and Tier-III Cities of India: An Exploratory Study 用吸引力标准评价印度二、三线城市购物中心顾客体验的探索性研究
Pub Date : 2020-05-01 DOI: 10.37625/abr.23.1.70-93
A. Gupta, Vaibhav Mishra, Anushree Tandon
The present research attempts to develop a theoretical framework for the assessment of shopping mall customer experience dimensions. It further classifies the variables associated with retail experiences that may attract customers in Tier-II and Tier- III cities towards the malls. Exhaustive literature review and expert opinion approaches have been used to explore the evaluation criteria for the assessment of the mall experience. ISM is used to develop a structural model that represents relationships among variables at different levels along with driving and dependence relationships in the structural model. The result highlights that factors like customer value orientation, tenant mix, employees, facilities management are the most significant benchmarking criteria for customers’ assessment of their mall experience in the present study. To achieve profitable operations in these cities, retailer’s need to acquaint themselves with the expectations of customers in order to attract their attention. This indicates that it is imperative for mall managers to identify how consumers benchmark different parameters while evaluating a mall experience. Understanding the importance of such parameters will allow malls to be built according to some standard specifications that can meet a consumer’s threshold for appeal and attractiveness. The study adds to the existing literature of assessing shopping experience in Tier-II and Tier-III cities’ malls through a structural model. The most and the least dominant factors found in this study will help mall managers to develop strategies to enhance the customer shopping experience in malls.
本研究试图建立一个评估购物中心顾客体验维度的理论框架。它进一步分类了与零售体验相关的变量,这些变量可能会吸引二线和三线城市的客户前往购物中心。利用详尽的文献综述和专家意见的方法来探讨商场体验评价的评价标准。ISM用于建立一个结构模型,该模型表示不同层次变量之间的关系以及结构模型中的驱动关系和依赖关系。结果显示,顾客价值导向、租户组合、员工、设施管理等因素是本研究中顾客评价购物中心体验最重要的基准标准。为了在这些城市实现盈利经营,零售商需要了解顾客的期望,以吸引他们的注意。这表明,商场经理必须确定消费者在评估商场体验时如何对不同参数进行基准测试。了解这些参数的重要性将使购物中心能够根据一些标准规格来建造,这些标准规格可以满足消费者对吸引力和吸引力的门槛。本研究对现有的通过结构模型评估二三线城市购物中心购物体验的文献进行了补充。在本研究中发现的最主导因素和最不主导因素将有助于商场管理者制定策略,以提高顾客在商场的购物体验。
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引用次数: 2
Geospatial Distribution of Public Secondary Schools in Gombe Local Government Area, Gombe State 贡贝州贡贝地方政府区的公立中学地理空间分布
Pub Date : 2020-04-14 DOI: 10.2139/ssrn.3576076
Y. C. Makadi
The paper examined the spatial distribution and accessibility levels of the public secondary schools in Gombe metropolis, Gombe State. Primary and secondary data were used in the study. Primary data was collected using a questionnaire and a hand-held GPS receiver was employed to capture the coordinate the coordinates of the public secondary schools and other relevant data. Secondary data included an administrative map, population figures of students and teachers, names and addresses of public secondary schools in the study area. The data obtained were analyzed using Geographic Information Techniques. From a survey carried out in the study area a Total of seventeen public secondary schools with nineteen thousand and eleven students were identified. Nearest Neighbour Analysis was carried out based on each of the ten words of the study area. The pattern of distribution of public secondary schools in the study area revealed dispersed pattern as in the of Bolari Eastward with NNA of 3.385087, and Shamaki ward with NNA of 1.60014; while the clustered pattern occurred, for instance, in Pantami ward with NNA of 0.226863 and HerwaGana ward with NNA of 0.185239. It is recommended that the sitting of public secondary schools by the Government in the study area should include accessibility factors in relation to the population size of the wards.
本文研究了贡贝州贡贝市公立中学的空间分布和可达性水平。本研究采用了第一手资料和第二手资料。主要数据采用问卷调查的方式收集,并采用手持式GPS接收器获取坐标、公立中学的坐标和其他相关数据。次要数据包括行政地图、学生和教师的人口数据、研究地区公立中学的名称和地址。利用地理信息技术对获得的数据进行分析。从在研究区域进行的一项调查中,共有17所公立中学,共有191,011名学生被确定。根据研究区域的十个单词中的每一个进行最近邻分析。研究区公办中学分布格局呈现分散型分布格局,东波拉里区和沙马基区分别为3.385087和1.60014;Pantami病区NNA为0.226863,HerwaGana病区NNA为0.185239。我们建议政府在研究区内设立公立中学时,应考虑到与各区人口数目有关的无障碍因素。
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引用次数: 0
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ERN: Analytical Models (Topic)
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