The importance of small urban parks (SUP) in mega cities has been accepted as an essential component of urban lung and restorative settings. As urban population in the world increases and the cost of maintaining large parks escalates, urban authorities are shifting their attention to creating and maintaining smaller urban parks. However, SUP may present a different ambience due to their locatio...

Urban systems emerge as distinct entities from the complex interactions among social, economic and cultural attributes, and information, energy and material stocks and flows that operate on different temporal and spatial scales. Such complexity poses a challenge to identify the causes of urban environmental problems and how to address them without causing greater deterioration. Planning has tra...

A majority of the world's population will live in urban areas by 2007 and cities are exerting growing influence on the health of both urban and non-urban residents. Although there long has been substantial interest in the associations between city living and health, relatively little work has tried to understand how and why cities affect population health. This reflects both the number and comp...

today, countries that have experienced damages caused by wars, pay special attentions to passive defense in their defense strategies to protect their national properties and vital resources. to this end, observing passive defense considerations in urban development and design has a great impact on reducing the vulnerability of cities, financial losses, and casualties as well as increasing citiz...

Urban sprawl is a hot topic of global concern with increasing dramatically and impact on ecological environment. But there is not a mature method to explain the detail of process of urban sprawl and dynamic changes. In this paper, the dynamic changes of urban is studied based on 1980, 1988, 1994, 2000 and 2005 five remote sensing images of Shenzhen. It is distinguished three types including inf...

Streams, as low-lying points in the landscape, are strongly influenced by the stormwaters, pollutants, and warming that characterize catchment urbanization. River restoration projects are an increasingly popular method for mitigating urban insults. Despite the growing frequency and high expense of urban stream restoration projects, very few projects have been evaluated to determine whether they...

Optimal unmanned aerial vehicle (UAV) placement in a 3-dimensional (3D) space to build connection between base station (BS) and ground user is studied herein. A key challenge avoid signal propagation blockage due obstacles. Much prior work uses probabilistic terrain models with model parameters learned from the statistics over large area, therefore, optimization for specific small local area po...