about half a century ago, following the introduction of urban sprawl up concept, various studies have been conducted to describe the mechanism and the formation of this phenomenon. some of these studies aimed at finding the negative and positive impacts of such phenomenon on urban area with emphasis on how such concept may be looked open from environmental, economical and social perspectives.th...

An analysis was conducted to examine the market visibility of small aircraft as a transportation mode in competition with automobile and scheduled commercial air travel by estimating the pool of users that would potentially switch on-demand air travel due to cost/time saving. These new aircraft greatly increase the practicality of regional aircraft as a transportation mode that can avoid the co...

A discomforting reality has materialized on the transportation scene: our existing air and ground infrastructures will not scale to meet our nation’s 21PP century demands and expectations for mobility, commerce, safety, and security. The consequence of inaction is diminished quality of life and economic opportunity in the 21PP century. Clearly, new thinking is required for transportation that c...

The air transportation system infrastructure is comprised of communication, navigation, surveillance, and air traffic management systems, and is known as the National Airspace System. This chapter describes the current very high-frequency and high-frequency modes of communication, very high-frequency omnidirectional range, distance measuring equipment, and instrument landing systems for navigat...

The CAAA of 199(I will have a major impact on the transportation planning and project development processes and on the operation of the federal-air highway program. CAAA will substantially revise the federalair highway program in ozone and carbon monoxide nonattainment areas due to its provisions for sanctions, conformity, transportation/air quality planning, vehicle miles traveled (VMT). The c...

The growth of air transportation in a country affects positively the development of other industries especially tourism. Turkey and Spain rank among the top countries in the world with their most developed air transportation and tourism sectors. In this study, the similarities and differences of air transportation systems of both countries and their dependency on tourism are examined. In this f...

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...