Large cities in Asia have unique transport problems. Traffic management alone is limited in solving the problems of urban transportation, and introduction of guided transit systems separate from ground-level transport is essential in solving these problems. This article describes some of the recent measures, including finance resources, taken to solve Asian urban transportation problems. The ad...

introduction no2 is not only a potential air pollutant in urban and industrial environments but also a precursor for smog of urban environment that is another ozone pollutant as well. some of the urban environments in iran have high tropospheric and near surface no2 which requires research attentions especially in these years. that is the issue of concern in the present study using satellite da...

the hastening increase in the population of the cities ,lack of urban infrastructures ,shifting the land use and the consequent vanish of ecologically valuable lands in the countries ,industrial pollutions ,illegal settlement in the suburbs and other human activities which have influenced the growth of cities in iran too ,make it necessary to study and analyze the growth of rasht(the capital of...

Ecosystem services (ES) in cities and surrounding suburban areas are one of the major factors which guarantee quality of life. Most studies directly referring to urban ecosystem services are conducted on a local scale or for selected cities. There are few studies which focus on temporal changes of the provision of ecosystem services across a large number of cities. This paper analyzes selected ...

A LONG-STANDING BELIEF in development studies holds that, on the whole, living conditions in developing countries are superior for residents of large cities than for persons living in smaller cities, towns, and villages. The concept of big cities as " islands of privilege " (Harrison 1982: 145) is fundamental to otherwise discrepant theories of modernization, dependency, world systems of cities...

The strong world-wide urbanisation trend calls for a repositioning of cities, especially the large cities with a global impact. These cities tend to become economic, logistic and political powerhouses and are increasingly involved in a competition on their integral performance. The present paper aims to trace to what extent and why some cities outperform others. Starting from an extensive datab...

This study presents the results of a paper of urban spatial structure and exceedances of the 8-h national ambient air quality standard for ozone in 45 large US metropolitan regions. Through the integration of a published index of sprawl with metropolitan level data on annual ozone exceedances, precursor emissions, and regional climate over a 13-year period, the association between the extent of...

Visualization of large urban complexes on the web is highly demanding task both from the networking and computational point of view. The whole threedimensional model of a city is mostly too big to be downloaded in a reasonable time and to be stored in a memory of commonly used computers. This paper presents a scaleable approach for subdividing an urban model into smaller parts. Dynamic loading ...

The Yangtze River Delta (YRD) has experienced rapid urbanization and dramatic economic development since 1978 and the Yangtze River Delta urban agglomeration (YRDUA) has been one of the three largest urban agglomerations in China. We present evidence of a significant urban heat island (UHI) effect on climate warming based on an analysis of the impacts of the urbanization rate, urban population,...