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Volume III
2008
Issue 1

Aspects of Competitive Performance: an Exploratory Study of Air Cargo Players in Brazil
Miguelangelo Geimba de Lima
Rafael Quental Nogueira
Daniel de Siqueira Felipe
Anderson Ribeiro Correia
Mischel Carmen Neyra Belderrain

Abstract
Increasing competition demands more competitiveness from companies and constant and accurate information about competitors and the market place. This requires the development of performance evaluation methods. Although airport cargo revenues are larger than airport passenger’s, no survey has provided a detailed study on competitive performance factors of air cargo players in Brazil. This paper has surveyed major airlines operating in Brazil and major air cargo dispatchers (domestic and international). The results of this work are directly useful to INFRAERO, to the airlines and to the Brazilian Civil Aviation Agency (ANAC), in order to suggest improvements in the efficiency of the air sector.

[Full-TextPDF283.57 KB]

Abstract
Developed countries have made significant efforts to integrate UAV operations into controlled aerial space due to the rising of interest of using Unmanned Aerial Vehicles (UAV) for civilian purposes. This study focuses the usage of multi-agent architecture to distribute the workload of detecting and solving conflicts between the aircraft and the UAV with no intervention from ground-based facilities. Midair collision risk was the main unsafe situation evaluated in the paper using an aircraft collision model based on air traffic density data.

[Full-TextPDF312.07 KB]

IMPACT ON THE LEVEL OF SERVICE DUE TO FLIGHT TRANSFERS BETWEEN AIRPORTS: CASE STUDY OF SÃO PAULO AIRPORTS
McWillian de Oliveira
Marcus Luiz Pogianelo
Carlos Melchiori F. Couto
Anderson Ribeiro Correia

Abstract
This work studies the impact on the level of service offered to passengers as a function of an eventual partial flights transfer from the São Paulo domestic airport (Congonhas) to the São Paulo international airport (Guarulhos). Some recent studies indicate the need of the transferring of a significant portion of the flights from Congonhas, given its lack of operational capacity, suggesting the Guarulhos airport as the main potential recipient of these transferred flights. AHP (Analytic Hierarchy Process) method was employed to obtain an overall quantitative measure of the level of service on both airports. To support the analyses, a survey has been conducted with 300 passengers and the managers of the main airlines currently operating at the Congonhas airport. Finally, an experts panel was structured, in order to consolidate the obtained information and to indicate the weights attributed to the main level of service variables and to rank the studied airports, as a function of the proposed criteria. The results indicate that the Congonhas airport is preferred by the majority of users and airlines managers, with a rating (0 to 1) of 0.801, while the Guarulhos has a rating of 0.199. The main factors determining these ratings were operational efficiency, access time, and processing time for passengers, among others.

[Full-Text PDF342.75 KB]

APPLICATION OF QUEUING THEORY FOR AVAILABILITY ASSESSMENT IN AIRSPACE CONTROL SYSTEMS
Walter Nogueira Pizzo
Paulo Sérgio Cugnasca

Abstract
This paper provides useful information to build availability models for computer systems used in airspace control centers, based on analytical models provided by queuing theories. A general model is first presented, referencing a published case study, where the authors described the use of queuing models to establish availability parameters related to a data center operation and its management issues. In addition, some considerations are introduced to extend this general model in order to propose its application for the specific computer systems used in integrated airspace control centers, where operational control could depend on human controllers, responsible for civil air traffic control or military air defense operations. This model could also be applicable where process controls require intensive use of human-machine interfaces (HMI). From this study, further extensions could be also developed, intended to similar applications on other specific cases of process control computer systems.

[Full-Text PDF446.99 KB]

A MODELING TOOL TO ASSIST ON THE DECISION PROCESS OF DETERMINING THE OPTIMAL LOCATION OF AN INDUSTRIAL AIRPORT IN BRAZIL
Marcelo Augusto Pires Togatlian
Anderson Ribeiro Correia
Mischel Carmen Neyra Belderrain

Abstract
This paper considers the problem of determining the optimal location of an industrial airport in Brazil, a special approach custom entrepot. The methodology applied is the AHP (Analytic Hierarchy Process), widely utilized in the area of discrete multicriteria decision making, that obtain numerical values from verbal judgments. Firstly, the concept of industrial airport is presented. Then, the AHP is described. The methodology is applied considering three criteria and four possible locations. After the optimal location is proposed, the results are analyzed and a new research with a wider approach is proposed.

[Full-Text PDF 358.16 KB ]

ANALYSIS OF THE ECONOMIC IMPACTS OF NIGHT CURFEWS ON AIRPORT OPERATIONS
Ana Lúcia Carvalho de Moraes
Marilda Tavares
Yaeko Yamashita

Abstract
Aeronautical noise is considered to be the main environmental problem derived from airport operations. It directly affects the quality of life of the people living close to airports. Generally, these are people who do not directly benefit from the airport business. As a means to mitigate the problems caused by aeronautical noise, a night curfew is often imposed on the airport activities to minimize the existing conflicts. This article describes a proposed methodology to analyze the main economic impacts derived from operational changes at the airport – namely the night curfew on airport operations. The direct, indirect and induced impacts of this curfew are considered in this proposal. This study may support future evaluation studies with a more quantitative approach.

[Full-Text PDF 256.82 KB ]

Issue 2

Abstract
This paper presents an application of the root cause tree to the cargo terminals of Viracopos International Airport in Campinas, São Paulo State, Brazil. This technique aims to make it easier to understand the main causes of a problem or event so that proper corrective measures can be proposed. Some problems related to road transport were identified and a root cause tree was built for each of them. The results show that the terminals are not suitably prepared to meet the needs of this transport mode. The systematic analysis of the problems and their root causes can contribute to enhancing the efficiency of the operations in the airport cargo terminals.

[Full-Text PDF 101.42 KB ]

Evaluating Orientation Level of Service at Passenger Terminals at Major Brazilian Airports
Giovanna Miceli Ronzani
Prof. Dr. Anderson Ribeiro Correia

Abstract
This paper presents an analysis on the orientation and legibility of internal spaces of some Brazilian airports. The main issue states the fact that most of the users have experienced embarrassing situations whenever moving around an airport and even localizing their destinations in a passenger terminal (TPS). Considering the frequent time restriction, it is noticed that the lack of orientation, and therefore the difficulty of finding their way through, may lead passengers to insecure uncomfortable stressful sensations. The identification of variables that may infer orientation is expected to provide architects and engineers with principles, which should consciously guide them in the sense of the required parameters to design. Therefore, it allows better TPS efficiency in terms of orientation, offering passengers the means of finding their ways as well as identifying their destinations quicker. Moreover, users would be able to read and perceive the space, resulting in a better level of satisfaction for them.

[Full-Text PDF 235.58 KB ]

The Bilateral Agreement Between Argentina and the United States
Gustavo Andrés Lipovich

Abstract
The air transport supply between Argentina and the United States is characterized by being strongly disproportionate in favor of the American carriers. Nevertheless, the proportionality level has not been stable during the last 10 years, but has experienced numerous swings, although the tendency favors the American companies. The analysis of the constant renegotiation process of the bilateral agreement and the study of the main statistic variables were used to identify the causes of the supply disproportion. Finally, it is possible to argue that this process derived from abundant factors that took place during this period including: bilateral meetings and agreements, business strategies, regulations of air market protection, financial situations of the air carriers and other exogenous causes of variation in demand.

[Full-Text PDF 169.20 KB ]

A Choice Model for Collective Passenger Transportation in Brazil: Air X Highway
Rogéria de Arantes Gomes
Ernesto Cordeiro Marujo

Abstract
Public intercity passenger transportation in Brazil has been strongly affected by low cost airline prices and by people’s increasing income. The regulatory system allows operators from different modes to serve the same route. In this context, the potential competition has been increased, with some disadvantages for highway transportation. This study estimates the total cost of passenger transportation (internal and external) in Brazil. For a 677 km trip, the passenger-kilometer cost obtained was US$ 0.1387 traveling by airplane, and US$ 0.0955 by bus, in Brazil.These costs were parameterized considering consumer income and the distance of the trip. A statistical function d=5800y-1,88 was generated, showing the efficient choice when a passenger has to decide between traveling by airplane or by bus.

[Full-Text PDF 117.46 KB ]