During the past ten years, Tanzanian cities have undergone rapid changes that have transformed the urban environment as well as the lives of millions of people who live in this setting. The impact of these changes is affecting almost everybody, particularly the urban poor. One of the growing social problems associated with these changes is the tremendous increase in unsupervised children either...

Experience with nature contributes to human wellbeing and environmental stewardship. Both may be affected when people experience local environmental disturbances. I test the hypothesis that relatively gradual ecological disturbance in urban areas increases awareness and appreciation of urban nature and environmental stewardship. In recent years the Emerald Ash Borer killed 10,000 street trees i...

The authors propose a topological analysis of large urban street networks based on a computational and functional graph representation. This representation gives a functional view in which vertices represent named streets and edges represent street intersections. A range of graph measures, including street connectivity, average path length, and clustering coefficient, are computed for structura...

his investigation was carried out to reveal the impact of solar radiation on wind flow structure and pollutant dispersion in an urban street canyon of aspect ratio of one using the computational fluid dynamic (cfd) technique. the simulation results (velocity and concentration data) show that heating from building wall surfaces and ground lead to strong buoyancy forces as the air is heated by th...

Urban landscapes form the main parts of the city. One of these spaces is urban streets, in whichsocial interactions and urban vitality reach its maximum quality and quantity. One of the principles and properties ofurban landscape design is its intelligibility. A viewer who takes a look at an intelligible city and knows it can attract newemotional manifestations of city without damaging its orig...

Many complex networks demonstrate a phenomenon of striking degree correlations, i.e., a node tends to link to other nodes with similar (or dissimilar) degrees. From the perspective of degree correlations, this paper attempts to characterize topological structures of urban street networks. We adopted six urban street networks (three European and three North American), and converted them into net...