2013 Session: 608

• Analysis Framework for Designing Two-Device Checked Baggage Inspection Systems at Airports
  Abstract: This paper presents a decision support analysis framework for selecting screening devices, their sensitivity parameters and detection thresholds in a two-device system for automated, non-intrusive inspection of checked baggage at airports. The analysis procedure assumes that the output signals of a screening device, when presented with a baggage with or without security threat, may be modeled by probability distributions. Compared with the pre-specified thresholds, the probability of making wrong decisions (false clear and false alarm) for the baggage may then be estimated. An objective function is then formulated to minimize the total expected cost of screening errors. Based on this framework, two decision criteria, one based on the minimum total expected cost and another one incorporates the operating characteristic curve of the system, are recommended. The application of the analysis framework is demonstrated with a hypothetical problem based on published data.
  Authors: Cheu, Ruey Long; Blejcharova, Nela; Bína, Ladislav
  Authors: Cheu, Ruey Long; Blejcharova, Nela; Bína, Ladislav
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-0132
• Consensus-Building Mechanism for Setting Service Expectations in Air Traffic Flow Management
  Abstract: A significant challenge of effective air traffic flow management (ATFM) is to allow for various competing airlines to collaborate with an air navigation service provider (ANSP) in determining flow management initiatives. This challenge has led over the past 15 years to the development of a broad approach to ATFM known as collaborative decision making (CDM). A set of CDM principles has evolved to guide the development of specific tools that support ATFM resource allocation. However, these principles have not been extended to cover the problem of providing strategic advice to an ANSP in the initial planning stages of traffic management initiatives. In this paper, we describe a mechanism whereby competing airlines provide “consensus” advice to an ANSP using a voting mechanism. It is based on the recently developed Majority Judgment voting procedure. The result of the procedure is a consensus real-valued vector, that must satisfy a set of constraints imposed by the weather and traffic conditions of the day in question. While we developed and modeled this problem based on specific ATFM features, it appears to be highly generic and amenable to a much broader set of applications. Our analysis of this problem involves several interesting subproblems, including a type of column generation process that creates candidate vectors for input to the voting process.
  Authors: Swaroop, Prem
  Authors: Swaroop, Prem
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-0437
• Equitable Resource Allocation Mechanisms During Reduced Airspace Capacity
  Abstract: During bad weather, the Federal Aviation Administration is using various Air Traffic Flow Management (ATFM) initiatives to alleviate the problems associated with imbalanced demand and capacity. A new concept that was recently introduced to be part of the Airspace Flow Programs (AFPs) is the Collaborative Trajectory Options Program (CTOP), where customers are allowed to submit cost-weighted sets of alternative trajectory options for their flights. In this research we propose a meaningful way for carriers to express some preference structure during AFP. We also propose a resource mechanism allocation that will improve the system efficiency and at the same time will take into account the preferences of the airlines. First we examined how the results from using the proposed preference structure of airlines is compared to Ration By Schedule (RBS). Then we examined how the allocation mechanism proposed works compared to RBS.
  Authors: Vlachou, Kleoniki
  Authors: Vlachou, Kleoniki
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-0438
• Creating an Air Traffic Analysis Structure to Support Forecasting
  Abstract: A well structured analytical process for air traffic is required at NAV CANADA for two main reasons. The first is for forecasting and the continued enhancement of the empirical forecasting models that are currently under development. The second is to respond to questions regarding the air traffic activity during recent periods. This paper describes the process and levels of analysis without any discussion regarding the results. Results from May 2012 are shown as the sample month.
  Authors: Cripwell, Paul
  Authors: Cripwell, Paul
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-0482
• Productivity Performance of U.S. Passenger Airlines Since Deregulation
  Abstract: To evaluate US passenger airlines' productivity performance since the airline deregulation in 1978, this paper measures and compares productivity at both the US airline industry and individual carrier levels.Productivity is measured at the aggregate airline industry level in terms of multifactor productivity (MFP), the ratio of a single output to a combination of inputs, to compare industry productivity over time from 1978 to 2009. In addition, productivity is measured at the disaggregate carrier level in terms of total factor productivity (TFP), the ratio of total outputs to total inputs, to compare productivity growth across airlines and over time from 1995 to 2010.Overall, results indicate that US passenger airlines have experienced tremendous MFP improvements since deregulation despite periods of reduced productivity levels that coincide with exogenous factors including economic recessions, fuel price spikes, and other unforeseen events. Cumulative MFP in terms of airline traffic, measured in revenue-passenger miles (RPMs), and network capacity, as determined by available seat miles (ASMs), increased at 191% and 117%, respectively, between 1978 and 2009. Looking at individual US carriers’ productivity, low-cost carriers achieved rapid TFP growth in the early 2000s before leveling off in the latter portion of the decade. The restructuring efforts of legacy carriers enabled them to improve their productivity growth in the latter part of the 2000s, although at a much lower rate than their low-cost counterparts. As of 2010, although low-cost carriers had a slight advantage in TFP levels, there is evidence of continued convergence between the two carrier types.
  Authors: Powell, Robert Andre; Mwakalonge, Judith L.; Perkins, Judy A.
  Authors: Powell, Robert Andre; Mwakalonge, Judith L.; Perkins, Judy A.
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-0667
• Exploring the Feasibility of Using Airport Data in Real-Time Risk Assessment
  Abstract: The effect of reduction of visibility on crash occurrence has recently been a major concern. Although visibility detection systems can help to mitigate the increased hazard of limited-visibility, such systems are not widely implemented and many locations with no systems are experiencing considerable number of fatal crashes due to reduction in visibility caused by fog and inclement weather. On the other hand, airports’ weather stations continuously monitor all climate parameters in real-time, the gathered data may be utilized to mitigate the increased risk for the adjacent roadways. This study aims to examine the viability of using airport weather information in real-time risk assessment in locations with recurrent fog problems. Bayesian logistic regression was utilized to link 6-year (2005-2010) of historical crash data to real-time weather information collected from 8 airports in the State of Florida, roadway characteristics and aggregate traffic parameters. The results from this research depicts that real-time weather data collected from adjacent airports are good predictors to assess increased risk on highways.
  Authors: Ahmed, Mohamed M.; Abdel-Aty, Mohamed A.; Lee, Jaeyoung; Yu, Rongjie
  Authors: Ahmed, Mohamed M.; Abdel-Aty, Mohamed A.; Lee, Jaeyoung; Yu, Rongjie
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-0834
• Addressing Two Issues in Airline Origin and Destination Survey
  Abstract: The methods proposed are intended to estimate historical air travel demand and capacity information which could be useful in (say) calibrating demand analysis and forecasting models. More specifically, we addressed two issues in the Airline Origin and Destination Survey data. One is that it contains some sampling errors. The other one is that it does not provide capacity information. To address the first issue, we design a constrained least square model to estimate the complete historical travel demand served by the survey participating carriers. To address the second issue, we propose an adaptive adjustment capacity estimation scheme and embed it into the solution algorithm of the constrained least square model. We applied the methods to the 2007 survey data. We found that 1) on average, about 75% of the itineraries’ actual capacities are utilized and the variance is about 7%; 2) the survey oversampled the total demand by about 0.4% and the variance of sample rate is about 1.1%.
  Authors: Lee, Tao; Baik, Hojong
  Authors: Lee, Tao; Baik, Hojong
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-1280
• State Transition of Gaze During Flight Simulation
  Abstract: The analysis of eye movements is a popular tool in traffic safety research. Among different motions of eye movements, gaze is a major parameter of eye tracking process. Besides fixation duration time and fixation duration percentage, transition matrix from one gaze state to the other can catch the dynamics of gaze patterns and capture the important features of eye movements. In this study, an inexpensive experiment system is designed to create a simulation environment where the participants can performance flight tasks. This system combines up-to-date eye tracker (FaceLAB 4.0), flight simulation (Microsoft Flight Simulator X and Logitech G940), and data management tools. Experiments are designed to test critical flight phases under different meteorological conditions. During the experiments, gaze views are divided into three zones: cabin instrument panel, outside and others. Markov Chain models are applied to analyze the data collected from the experiment system. State transition probability matrix and stationary distribution vector are computed. The result shows that there are no significant differences among gaze state transition matrixes, for all the scenarios. In addition, the total flight time and gaze ratio on zones are unstable.
  Authors: Dong, Shen; Wang, Ning; Zhang, Yu
  Authors: Dong, Shen; Wang, Ning; Zhang, Yu
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-1440
• Historical Review of Air Traffic Management System Concept of Operations
  Abstract: Air Traffic Management (ATM) system has the objective of enabling aircraft operators to meet their planned times of departure and arrival and adhere to their preferred flight profiles with minimum constraints and without compromising agreed levels of safety.Understanding a Concept of Operations (CONOPS) is the most critical step required for a holistic analysis of any system, including the ATM system. CONOPS is a document that contains all the necessary information by which to explain a system as a whole for the needs of all parties involved in its production and exploitation. In recent years there have been many attempts to define the future CONOPS of the ATM system whilst ignoring both the current ATM CONOPS and also the historical evolution of the ATM CONOPS.This paper, by means of a literature review from multiple sources, aims to critically review the CONOPS through all the different phases ATM has undergone from the beginnings of aviation. By doing so, this paper aims to overcome the gap in the existing literature related to the ATM CONOPS evolution description. Additionally the paper highlights the importance of understanding of the ATM CONOPS as means for deriving a holistic system description. This has been illustrated with two examples showing the ATM system structure based on the CONOPS from the period between 1990 and 2005, and the CONOPS from the period between 2005 and 2025 respectively.
  Authors: Studic, Milena; Majumdar, Arnab; Ochieng, Washington Y.; Schuster, Wolfgang
  Authors: Studic, Milena; Majumdar, Arnab; Ochieng, Washington Y.; Schuster, Wolfgang
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-1972
• Classification of Days Using Weather-Affected Traffic in National Airspace System
  Abstract: Classification of days based on weather impact on the National Airspace System is essential to evaluate the effectiveness of traffic management decisions in the past, which ultimately can improve the operational readiness when similar events occur in the future. To achieve this goal, this paper presents a methodology to classify days based on severe weather impact on traffic. A daily index of the impact of severe weather on scheduled traffic flow, termed as the Weather Impacted Traffic Index, is used as an input to perform the classification. First, a factor analysis is performed to identify the dominant weather patterns that occur on various days. Six major weather factors are identified based on this analysis. Factor scores are obtained for each day based on the day’s weather location and severity. Days are clustered using Ward’s minimum-variance method applied to the daily factor scores. The outcome of the analysis is a set of 21 clusters and days within each cluster. While the weather and traffic in the days belonging to a common cluster are similar, they are not completely identical. Following the classification of days, the reroute advisories are analyzed to identify the frequently used routes on days belonging to various clusters. It is observed that the most frequently used reroutes on days that belong to a particular cluster exhibit similarity to the National Playbook routes designed to mitigate weather impact on those days, which is an intuitive result that is supported by data analysis.
  Authors: Mukherjee, Avijit; Grabbe, Shon; Sridhar, Banavar
  Authors: Mukherjee, Avijit; Grabbe, Shon; Sridhar, Banavar
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-3363
• Sources of Market Power in the Airline Industry: Panel Data Evidence from U.S. Airports
  Abstract: A firm can obtain market power through its dominant position on the product market, or via control of a key resource. In particular, it has been argued that airport dominance is a more important source of market power in the US airline industry than route dominance. We examine this contention by analyzing a 17-year panel of airport-level prices in the United States. We demonstrate that even though on average airport-level concentration appears to be the strongest source of market power, concentration on routes originating at an airport is the strongest predictor of price levels for the sub-set of large and medium hub airports. There is little evidence that either airport or route dominance significantly affect prices in the sub-sample of medium and small hub airports. There is also little evidence that an airport’s dominant carrier exerts market power beyond the level predicted by the airport or route dominance. Our results imply that consumer welfare losses due to airline consolidation can be concentrated in smaller communities, and related to changes in airport-level concentration. We provide a simple evaluation of the possible effects of two recent mergers (Delta – Northwest and United – Continental) in light of this finding, and suggest that the former consolidation event can potentially lead to non-trivial consumer welfare losses to travelers in over 30 small communities.
  Authors: Bilotkach, Volodymyr; Lakew, Paulos Ashebir
  Authors: Bilotkach, Volodymyr; Lakew, Paulos Ashebir
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-3382
• Explanatory Power of Different Data Envelopment Analysis Models for Determining Airports’ Cost Efficiency
  Abstract: For analysing cost efficiency of airports and the determinants of that efficiency there are several Data Envelopment Analysis (DEA) methods available. The variety across the available approaches is primarily a result of different assumptions in the model specification. Whilst it is well established that the outcome of these models vary depending on what the analyst assumes with respect to input/output orientation and economies of scale, there is still a lively debate on the impact of bootstrapping and the choice of input variables on the explanatory power of such models. This paper analyses the cost efficiency of Italian and Norwegian airports over time. We apply a series of two-stage DEA approaches, with truncated regression models in the second stage to evaluate the explanatory value of the chosen methods and also to establish robust results on the impact factors of airports’ cost efficiency. With regard to the latter we find that the impact of airport size is limited to technical efficiency and that the catchment area is the most significant impact factor on cost efficiency.
  Authors: Merkert, Rico; Mangia, Luca
  Authors: Merkert, Rico; Mangia, Luca
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-3459
• Low-Cost Airlines-Within-Airlines: Business Model Moving East
  Abstract: Low-cost carriers (LCCs) are a significant threat to the sustainability of conventional airlines. That LCCs are growing – particularly within Asia-Pacific – exacerbates this problem and conventional airlines have reacted to this threat in various forms. One strategy is to create lower-cost subsidiaries, known as airlines-within-airlines (AWAs). Hence, the purpose of this paper is to determine the necessary criteria for successful AWAs while updating analysis of past, present, and proposed and announced AWAs. For this, we revisit existing literature and airline data, mainly from annual reports, from such AWAs. Initial results indicate that AWAs have limited success, with 26 failures of an identified 67, although only three in Asia-Pacific. Of those presently operating, 56.7% are from Asia-Pacific with this region containing 54.5% of the proposed and announced carriers. In our view it is ill-defined strategies, late market entrance, excessive management control, insufficient dissimilarity from the parent, higher costs and less efficiency vis-à-vis low-cost competitors, and comparatively low fares that are key reasons for failure. In contrast, the most successful AWAs have considerable autonomy from their parent, market dominance, decisive leadership, and less deviation from the pure LCC model unless a sufficient revenue premium is achieved.
  Authors: Merkert, Rico; Pearson, James
  Authors: Merkert, Rico; Pearson, James
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-3580
• Investigating the Truth of Heinrich’s Pyramid in Offshore Helicopter Transportation
  Abstract: Several hazardous industries have embraced the premise that incidents of negligible safety consequences are precursors to accidents in a statistical sense. However, in few such industries research has verified the truth of this assumption. This paper explores the relationships between accidents and reported incidents in the context of oil and gas-related offshore helicopter operations, using the accident investigation reports published by the UK Air Accident Investigation Board (AAIB) and the incidents filed under the British Mandatory Occurrence Reporting (MOR) Scheme between 1997 and 2010. Classification frameworks were developed to enable the independent analysis of accidents and incidents in relation to specific variables of interest. Frequencies and statistical associations that could have indicated the precursor relationship were explored. From the results of the analysis, the paper highlights potentially severe shortcomings in the assumptions underpinning incident data collection, as well as on the process with which incident data is generated. For example, it unveils the existence of sudden failures that cannot be reliably anticipated nor reported, and draws attention to a potentially flawed incident reporting culture. Given the results, the paper informs stakeholders in the industry of specific initiatives to ensure that the right lessons are learned from past occurrences (e.g., through ways of collecting incident data that will not solely rely on reporters) and how these could be used to inform future interventions, e.g., via the analysis of potential consequences of incidents, as a complement to the analysis of frequencies.
  Authors: Nascimento, Felipe Augusto Coutinho; Majumdar, Arnab; Ochieng, Washington Y.
  Authors: Nascimento, Felipe Augusto Coutinho; Majumdar, Arnab; Ochieng, Washington Y.
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-3923
• Flight Time Predictability: Concepts, Metrics, and Impact on Scheduled Block Time
  Abstract: The concept of predictability in air transportation has received increased attention in recent service quality assessments. While in ground transportation the concept of predictability has been extensively studied, there is little literature in air transportation. In this paper, a systematic review of the analogy regarding travel time reliability, or predictability between the two types of transportation is conducted. New concepts of flight predictability and different approaches to measure it at the individual flight level are proposed. The predictability performance of the National Airspace System over the past few years is examined based on predictability measures. It is found that predictability performance has similar trends with traffic volume and flight delay. The time-based metric is further decomposed to see proportion of different contributions. Then, the relationship between flight predictability and scheduled block-time is investigated empirically. Multiple regression models are conducted with the Bureau of Transportation Statistics (BTS) data. The impact of predictability is incorporated into the models with different approaches. It is found that departure delay plays a minor role in setting scheduled block-time, and that scheduled block times are insensitive to historical flight times in the upper tail of the flight time distribution.
  Authors: Hao, Lu; Hansen, Mark
  Authors: Hao, Lu; Hansen, Mark
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-4770
• Use of Passenger Facility Charges as a Funding Stream for Sustainable Transport Facilities at Airports
  Abstract: In this paper we use a case study approach to examine how airport operators have used Passenger Facility Charges to finance sustainable transport facilities, specifically multimodal transit and rail links, on their properties. Passenger Facility Charges (PFCs) are charges that airports may impose on boarding passengers to fund improvements on their properties. Under Federal Aviation Administration (FAA) requirements, PFC projects must enhance security, increase capacity, or reduce noise impacts. Importantly, unlike Airport Improvement Program (AIP) grants, the other significant FAA-administered improvement fund, PFCs can finance non-aeronautical projects (on the “land” side)—access roads, terminals and gates. This represents a potential major revenue stream for airport multimodal transit and rail connections. However, PFCS are limited to projects located on airport property and for the exclusive benefit of airport passengers, employees and visitors. We examine the types of projects that have been funded by these charges and obstacles to their use.Our findings suggest that there is growing airport operator interest in developing multimodal transit connections, as well as federal policy support. Motivations for this consideration include airport operators' increasing interest in improving their properties' sustainability.Through this research, we identify exemplar cases of PFC-funded intermodal projects and how FAA policy shaped them. We also identify areas for additional research: studies to develop deeper knowledge of effective airport intermodal strategies, more robust evaluation of economic impacts and effects on mode split and greater understanding of integrating airports with the surface transportation system, especially with recent federal and state policy efforts and discussions related to the development of high-speed rail.
  Authors: Orrick, Phyllis; Frick, Karen Trapenberg
  Authors: Orrick, Phyllis; Frick, Karen Trapenberg
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-5055
• Development of a National Airport-to-Airport Origin-Destination Table of Air Trips in the United States
  Abstract: Several large and detailed datasets describing air travel within and to and from the United States are collected by the FAA and in part or in their entirety are made publicly available. These datasets include the Airline Origin and Destination Survey Data (DB1B) and T-100 data that describe air passenger trips between airports in several different ways. The data potentially provide travel researchers with a high level of understanding of the air travel market in the United States and in particular represent a comprehensive database of air trip origins and destinations, but their large size and individual limitations means that using them for this purpose is practically difficult and not well understood or documented in the literature.This paper describes an analysis and comparison of the complete 2008 DB1B public dataset, the restricted DB1B international dataset, the T100 market data and the T100 segment data. The paper includes discussion of techniques to process the datasets, infer round trip directions in the DB1B datasets to understand visitor and resident segmentation at a given airport, and to adjust the DB1B sample data so that they better reflect the T100 market data. Finally, the paper presents the results of this work, which is a complete, airport to airport origin-destination table for 2008, segmented into visitors and residents. This table is an input to continuing work, which forms part of the Federal Highway Administration’s Travel Analysis Framework, to develop county to county origin-destination tables for air trips in the United States.
  Authors: Smith, Colin; Sana, Bhargava
  Authors: Smith, Colin; Sana, Bhargava
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-5145
• Investigating the Role of Frequent Flyer Membership in Context of Passenger Itinerary Choice
  Abstract: Air passenger itinerary choice has been studied from different perspectives, such as airport preferences in multi-airport regions and desired departure times . However, there lacks a comprehensive study of Frequent Flyer Program (FFP) membership and its influence on itinerary choices. This paper presents two discrete choice models to investigate the role of FFP membership on the itinerary choice. First, a Multinomial Logit (MNL) model is estimated and willingness-to-pay (WTP) for FFP is derived for various groups of travelers based on income and trip purpose. The results suggest a wide range of WTP values for flying on an FFP airline for different travelers. After taking FFP membership into account, there is little differentiation between the legacy carrier airlines, suggesting that they are viewed by passengers as a commodity. Finally, a mixed logit model is estimated to further capture the preference heterogeneity for FFP airlines beyond the discrete socio-demographic divisions in the MNL model. Lognormal distributions and normal distributions are used for the FFP coefficients and the airline coefficients respectively. = A full covariance matrix is estimated to capture the distribution in preferences across the population. Continuous WTP distributions are calculated for each income and trip purpose group. The results show that non-business travelers typically have a very low WTP to fly on an FFP airline, but business travelers, particularly those with high incomes, reveal very large estimates for WTP. A median WTP of $250 is found for high income business travelers with elite FFP memberships. Our estimates for WTP for flying with an FFP airline are much larger than those in previous literature, particularly for travelers with elite FFP membership status.
  Authors: Seelhorst, Michael; Liu, Yi
  Authors: Seelhorst, Michael; Liu, Yi
  Year: 2013
  Document Type: Paper
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-5294
• Analysis Framework for Designing Two-Device Checked Baggage Inspection Systems at Airports
  Authors: Cheu, Ruey
  Authors: Cheu, Ruey
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-0132
• Addressing Two Issues in Airline Origin and Destination Survey
  Authors: Lee, Tao
  Authors: Lee, Tao
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-1280
• Historical Review of Air Traffic Management System Concept of Operations
  Authors: Studic, Milena
  Authors: Studic, Milena
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-1972
• Sources of Market Power in the Airline Industry: Panel Data Evidence from U.S. Airports
  Authors: Lakew, Paulos Ashebir
  Authors: Lakew, Paulos Ashebir
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-3382
• Explanatory Power of Different Data Envelopment Analysis Models for Determining Airports' Cost Efficiency
  Authors: Merkert, Rico
  Authors: Merkert, Rico
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-3459
• Low-Cost Airlines-Within-Airlines: Business Model Moving East
  Authors: Merkert, Rico
  Authors: Merkert, Rico
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-3580
• Investigating the Truth of Heinrich's Pyramid in Offshore Helicopter Transportation
  Authors: Coutinho Nascimento, Felipe Augusto
  Authors: Coutinho Nascimento, Felipe Augusto
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-3923
• Flight Time Predictability: Concepts, Metrics, and Impact on Scheduled Block Time
  Authors: Hao, Lu
  Authors: Hao, Lu
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-4770
• Creating an Air Traffic Analysis Structure to Support Forecasting
  Authors: Cripwell, Paul
  Authors: Cripwell, Paul
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-0482
• Exploring the Feasibility of Using Airport Data in Real-Time Risk Assessment
  Authors: Ahmed, Mohamed
  Authors: Ahmed, Mohamed
  Year: 2013
  Document Type: Presentation; Poster
  Subject: Aviation; Economics; Security and Emergencies
  Session: 608
  Paper Number: 13-0834