in this study, estimation of global and diffuse solar radiations of selected cities in nigeria was carried out to assess the feasibility of solar energy utilization. the results of this work show the variation of direct and diffuse component of solar radiation in summer and winter months. the contribution of diffuse solar radiation is high during the monsoon months whereas sky conditions are cl...

The main aim of this paper is to offer a constructive critique of the dominant (indeed hegemonic) global city/world city discourse. This is a discourse that is overly dependent upon a theoretically globalist perspective derived out of limited empirical studies. Moreover, this is a discourse that focuses relatively too much upon (a) the characteristics of global/world cities and (b) the processe...

Over half of the world’s population lives in cities and United Nations (UN) demographers project an increase of 2.5 billion more urban dwellers by 2050. Yet there is too little systematic comparative research on the practice of urban health policy and management (HPAM), particularly in the megacities of middle-income and developing nations. We make a case for creating a global database on citie...

in the recent decades, urbanization has affected social, economical, cultural, political and physical aspects of human life-style. presentation of sustainable development as one of the goals of the third millennium is derived from the effects of cities on earth and on different aspects of human life. undoubtedly, talking about sustainability and sustainable development would be impossible witho...

the commentator suggests that it is necessary to extend the classical connotation of  global city which focuses much on the functions of controlling global capital and production. global city should also include the dimensions of the leading role and capacity on health improvements and well-being promotion. the commentator agrees with authors’ assessments about shanghai’s substantial progress o...

There are a number of attempt to reveal the structure of globalized world by scholars of urban studies. According to them, the world is structured in a certain way and world cities are formed into a complex spatial hierarchy (Friedmann 1985; Sassen 1991; Taylor and Walker 2001; Derudder et al. 2003). To reveal this structure, Sassen used the location of major producer services to determine the ...

This paper examines the relationship between urbanisation and globalisation beyond the so-called global cities that have been the focus of so much contemporary urban research. The paper argues that there is a problematic polarisation in urban studies between research on ‘global’ cities and work on presumably ‘non-global’ cities. The existing geographical literature on scale, place and uneven de...

Global cities are defined, on the one hand, as the major command and control centres of the world economy and, on the other hand, as the most significant sites of the production of innovation. As command and control centres, they are home to the headquarters of the most powerful MNCs of the global economy, while as sites for the production of innovation they are supposed to be the most importan...