نتایج جستجو برای: airports

تعداد نتایج: 3085  

2000
Anming Zhang Yimin Zhang

This paper shows that ``strict'' ®nancial break-even for airports may not be socially desirable. To maximize social welfare, airports should be allowed to take losses or make pro®ts at di€erent times while achieving break-even only in the long run. In particular, with economies growing over time, socially optimal pricing for a new airport can involve de®cit in its early years and surplus in its...

2006
Tzeu-Chen Han Cheng-Chi Chung Gin-Shuh Liang

To cut down cost in a competitive environment, airlines must avoid delays and operation inefficiencies in both airside and landside. However, previous studies have paid little attention to an airlines’ ground operation in airports’ cargo terminals. The purpose of this paper is to demonstrate how to employ the Fuzzy Critical Path method (CPM) to find out airport’s ground critical operation proce...

2004
L. Cockerill

A large and detailed data set is used to examine the influence of airports and airport light paths on housing prices. The results indicate that individuals consider airport proximity and airport flight patterns in their housing purchases. This shows that there exist two distinct measurable price gradients that distinguish large airports from small airports. In addition, homes located under the ...

Increasing number of air travellers in recent years and the emergence of multi-airport cities throughout the world has made the behaviour of travellers regarding the choice of the origin airport even more important. Analysis of this behaviour helps for a better future planning and development of competing airports as an important element of their demand prediction. In this paper, particular emp...

2015
Miguel Gueifão Santos António Pais Antunes

In this article, we introduce an optimization model aimed to assist aviation authorities in their strategic decisions regarding the long-term expansion of a network of airports. The objective is to maximize total system throughput for a given budget taking into account the capacity of the airports and the impact of travel costs upon demand. The results that can be obtained through the applicati...

2007
Geoffrey D. Gosling

This paper describes the scope and initial findings of a study undertaken for the California Department of Transportation that is exploring opportunities to improve intermodal connectivity at California airports. It summarizes the findings of case studies of 13 airports in the state that examined opportunities to improve intermodal connectivity at those airports and discusses the issues involve...

Journal: :Bulletin of the World Health Organization 2013
Kamran Khan Rose Eckhardt John S Brownstein Raza Naqvi Wei Hu David Kossowsky David Scales Julien Arino Michael MacDonald Jun Wang Jennifer Sears Martin S Cetron

OBJECTIVE To evaluate the screening measures that would have been required to assess all travellers at risk of transporting A(H1N1)pdm09 out of Mexico by air at the start of the 2009 pandemic. METHODS Data from flight itineraries for travellers who flew from Mexico were used to estimate the number of international airports where health screening measures would have been needed, and the number...

2009
Ying Zhou Jonathan I Levy

BACKGROUND Airports represent a complex source type of increasing importance contributing to air toxics risks. Comprehensive atmospheric dispersion models are beyond the scope of many applications, so it would be valuable to rapidly but accurately characterize the risk-relevant exposure implications of emissions at an airport. METHODS In this study, we apply a high resolution atmospheric disp...

2001
Michael Walton Colin Rice C. Michael Walton

As more metropolitan areas approach " non-attainment " status for ozone, air pollution at airports is becoming an increasingly important topic. Most proposed emissions reduction strategies target passenger automobiles and airport ground service equipment (GSE). At many airports, the future growth in oxides of nitrogen (NOx) emissions from aircraft is likely to offset any reduction achieved from...

2000
J R Allan

In order for airports to manage the bird strike risk effectively, a risk assessment process needs to be carried out to identify the major hazards at the airport, the levels of risk that they produce, and the most cost effective means of reducing that risk. Despite the fact that bird controllers, managers and consultants make informal bird strike risk assessments throughout their working lives, ...

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