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An Empirical Study Of The Impact Of The Expanded National Route Program On Flight Planning And Performance
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Book Synopsis An Empirical Study of the Impact of the Expanded National Route Program on Flight Planning and Performance by : Philip J. Smith
Download or read book An Empirical Study of the Impact of the Expanded National Route Program on Flight Planning and Performance written by Philip J. Smith and published by . This book was released on 1996 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Occupational Ergonomics by : Waldemar Karwowski
Download or read book Occupational Ergonomics written by Waldemar Karwowski and published by CRC Press. This book was released on 2003-03-26 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Occupational Ergonomics: Design and Management of Work Systems comprises chapters carefully selected from CRC's bestselling Occupational Ergonomics Handbook, logically organized for optimum convenience and thoughtfully priced to fit every budget. This book presents 34 chapters addressing selected issues in the area of occupational macroergonomics,
Book Synopsis The Occupational Ergonomics Handbook by : Waldemar Karwowski
Download or read book The Occupational Ergonomics Handbook written by Waldemar Karwowski and published by CRC Press. This book was released on 1998-12-18 with total page 2092 pages. Available in PDF, EPUB and Kindle. Book excerpt: Occupational ergonomics and safety studies the application of human behavior, abilities, limitations, and other characteristics to the design, testing, and evaluation of tools, machines, systems, tasks, jobs, and environments for productive, safe, comfortable, and effective use. Occupational Ergonomics Handbook provides current, comprehensive knowledge in this broad field, providing essential, state-of-the-art information from nearly 150 international leaders of this discipline. The text assesses the knowledge and expertise applied to industrial environments: Providing engineering guidelines for redesigning tools, machines, and work layouts Evaluating the demands placed on workers by current jobs Simulating alternative work methods Determining the potential for reducing physical job demands based on the implementation of new methods Topics also include: Fundamental ergonomic design principles at work Work-related musculoskeletal injuries, such as cumulative trauma to the upper extremity (CTDs) and low back disorders (LBDs), which affect several million workers each year with total costs exceeding $100 billion annually Current knowledge used for minimizing human suffering, potential for occupational disability, and related worker's compensation costs Working conditions under which musculoskeletal injuries might occur Engineering design measures for eliminating or reducing known job-risk factors Optimal manufacturing processes regarding human perceptual and cognitive abilities as well as task reliability Identifying the worker population affected by adverse conditions Early medical and work intervention efforts Economics of an ergonomics maintenance program Ergonomics as an essential cost to doing business Ergonomics intervention includes design for manufacturability, total quality management, and work organization. Occupational Ergonomics Handbook demonstrates how ergonomics serves as a vital component for the activities of the company and enables an advantageous cooperation between management and labor. This new handbook serves a broad segment of industrial practitioners, including industrial and manufacturing engineers; managers; plant supervisors and ergonomics professionals; researchers and students from academia, business, and government; human factors and safety specialists; physical therapists; cognitive and work psychologists; sociologists; and human-computer communications specialists.
Book Synopsis Bulletin of the Atomic Scientists by :
Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1961-05 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NASA SP-7500 by : United States. National Aeronautics and Space Administration
Download or read book NASA SP-7500 written by United States. National Aeronautics and Space Administration and published by . This book was released on 1977 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology Pathways by : National Research Council
Download or read book Technology Pathways written by National Research Council and published by National Academies Press. This book was released on 2005-10-05 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2003, Congress directed the Secretary of Transportation to establish the Next Generation Air Transportation System (NGATS) Joint Planning and Development Office (JDPO) to plan the development of an air transportation system capable of meeting potential air traffic demand for 2025. All federal agencies involved in aviation participate in the JDPO providing the opportunity overcome many of the major barriers to developing an effective NGATS. To assist this process, the NRC was asked to examine the first NGATS Integrated Plan prepared by JPDO and submitted to Congress in 2004. This report provides a review of the vision and goals, the operational concepts, and the R&D roadmap developed by the plan; an analysis of the JDPO integrated product teams created to carry out the planning; and an assessment of the implementation process.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722375416 Total Pages :68 pages Book Rating :4.3/5 (754 download)
Book Synopsis Enroute Flight Planning by : National Aeronautics and Space Administration (NASA)
Download or read book Enroute Flight Planning written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-06 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of this research were to develop design concepts to support the task of enroute flight planning. And within this context, to explore and evaluate general design concepts and principles to guide the development of cooperative problem solving systems. A detailed model is to be developed of the cognitive processes involved in flight planning. Included in this model will be the identification of individual differences of subjects. Of particular interest will be differences between pilots and dispatchers. The effect will be studied of the effect on performance of tools that support planning at different levels of abstraction. In order to conduct this research, the Flight Planning Testbed (FPT) was developed, a fully functional testbed environment for studying advanced design concepts for tools to aid in flight planning. Smith, Philip J. and Mccoy, C. Elaine Unspecified Center...
Book Synopsis Quantifying the Impact of Flight Predictability on Strategic and Operational Airline Decisions by : Lu Hao
Download or read book Quantifying the Impact of Flight Predictability on Strategic and Operational Airline Decisions written by Lu Hao and published by . This book was released on 2015 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, we examine how the predictability of travel time affects both the transportation service providers' strategic and operational decisions, in the context of air transportation. Towards this end, we make three main contributions. The first is the development of accurately measuring predictability of travel time in air transportation to best model airline decision behavior. The measure is sensitive to the different nature that's driving the decision. The second is an empirical investigation of the relationship between the best-measured travel time predictability and the transportation service providers' strategic and operational decisions to gain insights into the significance of the impact of predictability. The third contribution is proposing an algorithm to improve predictability in order to save cost in the strategic decision process through re-sequencing the departure queue at the airport. We consider the strategic decision as the setting of the scheduled travel time for each trip that typically happened six months before the travel date. On the operational side, we investigate into the decision of the amount of fuel loaded to each flight in the daily operation. We assume that the decisions are based on the predictability of historical travel time performance. When quantifying predictability, it is important to realize that the service providers have different priority of considerations when making the strategic (scheduling) and the operational (fuel loading) decisions. Therefore, we apply different metrics for predictability to modeling the different decision behaviors and prove that the best-fitting measure of predictability is not uniform across different type of decisions. Regarding the strategic decision making, the profit-driven nature of the service provider encourages discounting the effects of extremely long historical travel times. Therefore, segmenting the historical travel time distribution is crucial in our effort of measuring predictability. On the other hand, when making day-to-day operational decisions, specifically fuel loading decisions in this study, the safety-driven nature of the service provider prevails over others and it pays more attention to extreme events. Therefore a metric capturing the tail effects such as the variance and standard deviation is a more appropriate measure of predictability in this context. In modeling the relationship between predictability and scheduled travel time setting, we seek both analytical insights and empirical evidences. Firstly this relationship is studied with empirical data and multiple regression models. We develop the "percentile model" where the distribution of the historical travel time for an air trip is depicted by the difference between every 10th percentiles. We find that gate delay plays a minor role in setting scheduled travel time and that scheduled travel times have decreasing sensitivity to historical travel times toward the right tail of the distribution. To specifically link schedule setting with the trip's on-time performance, a scheduled travel time adjustment model is further developed. Poor on-time performance leads to increased scheduled travel time in the next planning period. With the behavior model results showing that both the median travel time and the "inner right tail" of the distribution affect schedule setting, an impact study is conducted to validate these impacts with evidence in the historical data. This impact from behavioral modeling is validated with real data in year 2006-2008 and 2009-2011, and their corresponding scheduled travel times in the later period. Furthermore, by studying the travel performance difference based on different changes in scheduled travel time, we conclude that ignoring the impact on schedule changes when considering potential benefits of improved travel time distribution could lead to inaccurate results. We complement the strategic behavioral modeling findings with proposing a practical algorithm that optimizes the sequence of departure queue on the airport to improve travel time predictability. The end objective is to reduce scheduled travel time through improved predictability and thus save cost for travel service providers. We present algorithms to sequence departures on a daily basis. For the objective function, scheduled travel time is viewed as a cost for airlines to be minimized. For each flight, the assigned slot generates a new travel time and this time contributes proportionally to the future scheduled travel time, as revealed in estimating the "percentile model". Assuring that the on-time performance is not greatly sacrificed is also important. Therefore the objective function also includes delaying the flight's arrival performance as part of the "cost of assignment". In this way, we develop a multi-objective algorithm to sequence departure flights to improve predictability, reduce airline scheduled travel time, and increase on-time performance. To investigate the relationship between predictability and fuel loading decisions, we develop a set of multiple regression models considering clusters of standard deviation of the estimates. The unpredictability under performance may cause decision makers (airline dispatchers) to load more fuel onto aircraft, and thus causing extra fuel consumed to carry this excessive fuel. We acquired a large and recent dataset with flight-level fuel loading and consumption information from a major US airline. With this data, firstly the relationship between the amount of loaded fuel and travel time predictability performance is estimated using statistical model. Predictability is measured with metrics such as standard deviation of travel time so that the tail effect of the distribution is properly captured. We find that one minute of standard deviation in airborne time within a month for the same OD pair and shift of day would lead to 0.95 minute increase in loaded contingency fuel and 1.85 minute loaded contingency and alternate fuel. Then, the impact of predictability on loaded fuel is translated into fuel consumption and ultimately, fuel cost for US domestic operations. If there is no unpredictability in the aviation system, the reduction in the loaded fuel would be 6.4 and 12.5 minute per trip, respectively. This ultimately translates into a cost to US domestic air carriers on the order of $88 - $345 million per year.
Download or read book Management written by and published by . This book was released on 1975 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the Atomic Scientists by :
Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1973-10 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
Book Synopsis Research Results Digest - National Cooperative Highway Research Program by : National Cooperative Highway Research Program
Download or read book Research Results Digest - National Cooperative Highway Research Program written by National Cooperative Highway Research Program and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1996 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 1979-05-25 with total page 1520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Commerce Business Daily written by and published by . This book was released on 1999-10 with total page 1828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impact of the Accelerated Highway Program on the Economy by : National Highway Users Conference. Research Department
Download or read book Impact of the Accelerated Highway Program on the Economy written by National Highway Users Conference. Research Department and published by . This book was released on 1956 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Management, a Continuing Literature Survey with Indexes by :
Download or read book Management, a Continuing Literature Survey with Indexes written by and published by . This book was released on 1975 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: