Two commonly used models to assess air pollution concentration for investigating health effects of air pollution in epidemiological studies are Land Use Regression (LUR) models and Dispersion and Chemistry Transport Models (DCTM). Both modeling approaches have been applied in the Ruhr area, Germany, a location where multiple cohort studies are being conducted. Application of these different mod...

In Revenue Management (RM) systems, information censoring and the interaction between forecasting optimization stages, increases costs complexity of performance analysis using historical data. An affordable suitable alternative is simulations, but appropriate behavioral models must be considered. following document, we discuss test implementation a dynamic air transport market simulator, design...

This Essay is about air transport and EC competition Law. The air transport industry has, in many countries, developed as a mixture of public utility and commercial venture. With the deregulation of the airline market, the EC Commission has also, to an increasing extent, become involved in the competition aspects of the airline industry. Part I deals with the transportation industry. Part II di...

Traffic congestion has been increasing because of increased population growth mainly in major cities due to urbanization. Traffic congestion causes increased air pollution, travel time and mostly traffic accidents; therefore we need an efficient traffic management system. Today most of the cities of the world have intelligent transport system which is equipped with electronics devices to commun...

B. Chen, X. D. Xu, S. Yang, and T. L. Zhao State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, 100081, China Laboratory of Cloud-Precipitation Physics and Severe Storms (LACS), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China Key Laboratory for Atmospheric Physics and Environment CMA-Nanjing University of Information ...

A wide variety of goods nowadays is transported by air, especially those of high value-to-weight ratio such as electronics and luxury goods and those perishable such as cut flowers and fish. The contemporary logistics practices that require shipping more frequently with smaller quantities also favor air transport. However, decision-making in air cargo business is challenging. Air cargo demand i...

BACKGROUND The purpose of this study is to compare air transportation of critically ill pediatric patients with a mixed air-ground transportation system by evaluating timeliness, safety, and cost. The setting was a tertiary care "hub" center with three outlying-referral "spoke" facilities. STUDY DESIGN Our study included 96 children transported between June and December 1997, with 45% constit...