Mobility support in IPv6 networks is ready for release as an RFC, stimulating major discussions on improvements to meet real-time communication requirements. Sprawling hot spots of IP-only wireless networks at the same time await voice and videoconferencing as standard mobile Internet services, thereby adding the request for multicast support to real-time mobility. This paper briefly introduces...

In urban studies and in energy policy there is much debate about the relationship between demand density of residential areas, measured units such as those population/ha or population/km2. A different approach presented this paper. Rather than evaluating relative merits compact sprawling forms, focus on spatial configuration infrastructures, appliances systems provision which city li...

This paper analyzes the mobility disruptions experienced by urban residents in relation to heavy precipitation and flooding of roads. The empirical focus is Accra, Ghana, a rapidly growing African city with discernible challenges its transport system longstanding history recurrent flood hazards, which are likely be exacerbated climate change future. In context where there very little data avail...

Texas and Norway may appear to be worlds apart—one flat, arid, sprawling across the vast US West, other green, mountainous, defined by its waters. Yet they face surprisingly similar challenges resulting from economies built on oil industry in a world now wracked climate change. This essay assumes that indigenous sovereignty social justice issues are inextricable environmental concerns, engages ...

security building processes after world war ii, were under the influence of realistic thoughts. this was considered a reaction to idealistic and institutional approaches. critical school attempted to criticize classical and structural realism. new security theoreticians emphasize on extended subjects and diverse threats and believe it to be beyond the competition of countries. they believe that...

LIKE most large universities, the University of Arizona is a virtual city: 37,000 students and nearly 14,000 employees on a sprawling campus in Tucson of 174 buildings and 11,000 parking spots. Also like most of the country's colleges and universities, it is not particularly selective. Arizona admits 83 percent of its applicants, although most graduated in the top half of their high school clas...

Let me say at the outset how pleased I am to have the honour of visiting your beautiful state and of speaking with you tonight. I come, as you know, from an organization created through the vision of American leaders like Franklin Roosevelt -an organization, however, that has recently been widely caricatured as a giant paper factory and a talk shop -a huge, sprawling bureaucracy, totally out of...