Complex network theory provides powerful tools to analyze and understand the structures and dynamics of complex air transportation systems. One example for a successful application of complex network theory in air transportation systems are airport networks, where airports are nodes, and two airports are connected if there exist flight connections. In complex networks, a node can be characteriz...

Air pollution is one of environmental issues that cannot be ignored. The heavy transportation and urbanization result in the air pollutants concentrated in certain areas. Inhaling pollutants for a long time causes damages in human health. Traditional air quality monitoring methods, such as building air quality monitoring stations, are typically expensive. In addition, monitoring stations are ge...

Recent cohort studies have relied on exposure prediction models to estimate individuallevel air pollution concentrations because individual air pollution measurements are not available for cohort locations. For such prediction models, geographic variables related to pollution sources are important inputs. We demonstrated the computation process of geographic variables mostly recorded in 2010 at...

Air travel is becoming increasingly more accessible to people both through the availability of cheap flights and because the airlines are now able to cater for individuals of all ages and disabilities. Air travels, especially for long haul, may cause both physiological and psychological discomfort to passenger. Passenger comfort is clearly a main factor in user’s acceptance of transportation sy...

The New York metroplex airports (JFK, LGA, EWR) provide air transportation service to this critical international economic hub. In the summer of 2007 the flights servicing the NYC metroplex airports experienced excessive delays and cancellations that added significant costs to doing business in New York. These delays can be attributed to changes in daily airport capacity (due to weather) and to...

OBJECTIVE Transportation, whether by air or ground, exposes the injured patient to mechanical shocks and vibrations. These forces and their hazardous potential remain largely unknown. The purpose of this study was to identify, characterize, and compare the forces generated during patient transport in helicopter and ground ambulances. METHODS Forces generated during transport were measured usi...

Historically, aircraft accidents have preceded the implementation of many changes in the US Air Transportation System. These accidents act as catalytic events which generate awareness of a problem and pressure for change to occur. Specifically, aircraft accidents indicate the presence of safety problems. As past safety problems were addressed the frequency of accidents decreased causing new dri...