نتایج جستجو برای: air transportation

تعداد نتایج: 259345  

2007
Philippe A. Bonnefoy

With the growing demand for air transportation and the limited ability to increase capacity at key points in the air transportation system, there are concerns that, in the future, the system will not scale to meet demand. This situation will result in the generation and the propagation of delays throughout the system, impacting passengers’ quality of travel and more broadly the economy. There i...

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One of the Challenging problems of Tehran metropolitan region is Air pollution. Suburban expansion in the form of sprawl patterns have created the travels and transportations, due to the dependence on personal vehicles contributes more than 85 percent of creators of air pollution. The article studied the role of transportation in emergence of urban air pollution in Tehran metropolitan region, h...

2006
Mark D. Moore

The ability to personalize air travel through the use of an on-demand, highly distributed air transportation system will provide the degree of freedom and control that Americans enjoy in other aspects of their life. This new capability, of traveling when, where, and how we want with greatly enhanced mobility, accessibility, and speed requires vehicle and airspace technologies to provide the equ...

Journal: :Anais da Academia Brasileira de Ciencias 2015
Guilherme S Couto Ana Paula Couto da Silva Linnyer B Ruiz Fabrício Benevenuto

The air transportation network in a country has a great impact on the local, national and global economy. In this paper, we analyze the air transportation network in Brazil with complex network features to better understand its characteristics. In our analysis, we built networks composed either by national or by international flights. We also consider the network when both types of flights are ...

Journal: :Simulation 2007
Frederick Wieland Amy R. Pritchett

The future of air transportation modeling and simulation represents a grand challenge for both the air transportation and the modeling and simulation communities. In addition to its size and scope, air transportation has many technical, operational, organizational, policy, security and legal aspects contributing to its complexity, yet must ensure an un-rivaled level of safety throughout any tra...

Journal: :محیط شناسی 0
مهرداد هادی پور استادیار گروه محیط زیست، دانشکدة کشاورزی و منابع طبیعی، دانشگاه اراک شراره پورابراهیم دانشگاه اراک، دانشکدة کشاورزی و منابع طبیعی، استادیار گروه محیط زیست،

increasing urban network has both positive (accessibility) and negative (air pollution) impacts. in this research air quality is chosen as key elements with respect to their critical roles in quality of life and urban health. the overall objective of this study is to develop a mathematical model to plan appropriate locations for residential land uses and urban transportation network development...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1386

چکیده ندارد.

2004
Jie Lin

In China, rapid economic growth and increasing foreign direct investment (FDI) is the driving force for urbanization, and transformation of urban spatial structures and transportation. Frequent interactive economic activities among the neighboring cities reinforce the already spatially clustered cities. In this paper we tried to extract the key urban transportation characteristics of seventy ma...

2004
Philippe A. Bonnefoy

INTRODUCTION Air transportation systems are based on a variety of vehicles including fixed wing aircraft and helicopters. The most diverse and developed category remains the fixed wing aircraft with sizes ranging from single seat to 555 seats in the case of the Airbus A380. This size characterization relates to passenger vehicles. However, cargo aircraft have similar range of sizes. The largest...

Journal: :Southern Economic Journal 1951

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