A new air mass-based synoptic procedure is used to evaluate climate/mortality relationships as they presently exist and to estimate how a predicted global warming might alter these values. Forty-four large U.S. cities with metropolitan areas exceeding 1 million in population are analyzed. Sharp increases in mortality are noted in summer for most cities in the East and Midwest when two particula...

Intelligent or smart cities rely on collaboration networks among human communities, innovation ecosystems, and digital infrastructure, applications and e-services, which enable the urban challenges of competitiveness, sustainability and inclusion to be addressed more efficiently. This urban paradigm is characterized by continuous transformation, fuelled by evolutions in innovation ecosystems, b...

Identifying Robust, Parsimonious Neighborhood Indicators Identifying a few indicators that summarily tracked key dimensions of neighborhoods would be invaluable for neighborhood monitoring and measuring impacts of interventions. Our goal is to search empirically for such robust, parsimonious indicators. In five cities we analyze the interrelationships among a broad set of census tract indicator...

Hierarchy of cities reflects the ubiquitous structure frequently observed in the natural world and social institutions. Where there is a hierarchy with cascade structure, there is a Zipf’s rank-size distribution, and vice versa. However, we have no theory to explain the spatial dynamics associated with Zipf’s law of cities. In this paper, a new angle of view is proposed to find the simple rules...

OBJECTIVES To figure out the most current prevalence of HIV and syphilis in MSM in China. METHODS A meta-analysis was conducted on the studies searched through PubMed, CNKI, and Wanfang published between 1 January 2009 and 11 April 2013. RESULTS Eighty-four eligible studies, either in Chinese or in English, were included in this review. The pooled prevalence of HIV and syphilis infection in...

trong economic interaction exists between communities on both sides of the U.S.–Mexico border. Just count the number of Mexican license plates on autos parked in U.S. malls, or note the many service and goods suppliers in U.S. border cities that support manufacturing in Mexico. Casual observation reveals patterns of local specialization, where work is often divided between the two cities on a s...

A hybrid life cycle-based trans-boundary greenhouse gas (GHG) emissions footprint is elucidated at the city-scale and evaluated for 8 US cities. The method incorporates end-uses of energy within city boundaries, plus cross-boundary demand for airline/freight transport and embodied energy of four key urban materials [food, water, energy (fuels), and shelter (cement)], essential for life in all c...

Cities are increasingly the fundamental socio-economic units of human societies worldwide, but we still lack a unified characterization of urbanization that captures the social processes realized by cities across time and space. This is especially important for understanding the role of cities in the history of human civilization and for determining whether studies of ancient cities are relevan...

A hybrid life cycle-based trans-boundary greenhouse gas (GHG) emissions footprint is elucidated at the city-scale and evaluated for 8 US cities. The method incorporates end-uses of energy within city boundaries, plus cross-boundary demand for airline/freight transport and embodied energy of four key urban materials [food, water, energy (fuels), and shelter (cement)], essential for life in all c...