As a research domain, Smart Cities is only emerging. This is evident from the number of publications, books, and other scholarly articles on smart cities indexed in Google scholar and Elsevier’s Scopus—an abstract and citation database. However, significant literature is available on related topics like intelligent city, digital city, and intelligent community based on search results research r...

BACKGROUND AND PURPOSE We examine whether the proportion of the US population with ≤60 minute access to Primary Stroke Centers (PSCs) varies based on geographic and demographic factors. METHODS Population level access to PSCs within 60 minutes was estimated using validated models of prehospital time accounting for critical prehospital time intervals and existing road networks. We examined the...

The article revisits spatial interaction and distance decay from the perspective of human mobility patterns and spatially-embedded networks based on an empirical data set. We extract nationwide inter-urban movements in China from a check-in data set that covers half a million individuals within 370 cities to analyze the underlying patterns of trips and spatial interactions. By fitting the gravi...

S ince the 1990s, China has undergone astonishing economic growth, and its extensive urbanization has become one of the most striking development signatures anywhere in the world. With the world's largest urban population, China's urbanization experience provides meaningful insights on future urban development in other countries. 1 Because China has an extremely low per-capita land area, constr...

nowadays urban sanitary landfill compatible with environmental principles and in line with sustainable development is a necessity. in this paper for the purpose of determining appropriate sanitary landfill sites in kohgilooye & boyerahmad province, , many data layers were used including: slope, land cover, distance to main roads, distance to cities & villages, geology, surface water network, di...

This paper discusses the geometric correction of measured historical maps and the evaluation of accuracy with case studies on Silk Road maps, “Innermost Asia” and “Serindia,” made by Aurel Stein about 100 years ago, and Beijing maps, “Complete map of Peking, Qianlong period,” made about 250 years ago. The former case study deals with maps that cover thousand kilometers, and we delivered the err...

Net product entry is procyclical, which amplifies fluctuations in consumer welfare over the cycle if consumers have love for variety. Using barcode-level data covering grocery expenditures in 26 major cities, I establish that differences in city-level product entry are largely uncorrelated with local economic conditions. I provide evidence that city-level changes in product variety over the bus...

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The purpose of this study is to evaluate the present status of Mashhad’s Bicycle Sharing (BS) Program's stations, and to locate future stations, taking into account the 7 criteria of “proximity to subway stations”, “proximity to other stations”, “distance from important intersections”, “distance from population centers”, “proximity to educational, recreational and commercialcenters”, “slope lev...

One of the most striking feature of the space-economy is that cities form a hierarchical system exhibiting some regularity in terms of their size and the array of goods they supply. In order to show how such a hierarchical system may emerge, we consider a model with monopolistically competitive markets for the industrial sectors. As transport costs steadily decrease from large values, the urban...