نتایج جستجو برای: aviation

تعداد نتایج: 8722  

Journal: :The journals of gerontology. Series B, Psychological sciences and social sciences 2011
Jerome A Yesavage Booil Jo Maheen M Adamson Quinn Kennedy Art Noda Beatriz Hernandez Jamie M Zeitzer Leah F Friedman Kaci Fairchild Blake K Scanlon Greer M Murphy Joy L Taylor

OBJECTIVES The goal of the study was to improve prediction of longitudinal flight simulator performance by studying cognitive factors that may moderate the influence of chronological age. METHOD We examined age-related change in aviation performance in aircraft pilots in relation to baseline cognitive ability measures and aviation expertise. Participants were aircraft pilots (N = 276) aged 40...

Journal: :Journal of safety research 2003
Jeffrey H Goode

PROBLEM There is concern in the aviation community that pilot schedules can lead to fatigue and increased chance of an aviation accident. Yet despite this concern, there is little empirical analysis showing the relationship between pilot schedules and commercial aviation accidents. This study attempts to demonstrate an empirical relationship between pilot schedules and aviation accidents. MET...

1999
PETER J. GORDER HOSAM FATHY

Domestic production of general aviation (GA) aircraft has declined markedly in recent years and an effort is underway to revitalize this industry by opening new markets for aviation, shifting the perception of general aviation as recreation to general aviation as a travel option. This can be achieved only by providing a product that is safer, easier to fly in all weather conditions, and no more...

Journal: :Addiction 2011
Guohua Li Susan P Baker Qi Zhao Joanne E Brady Barbara H Lang George W Rebok Charles DiMaggio

AIMS To assess the role of drug violations in aviation accidents. DESIGN Case-control analysis. SETTING Commercial aviation in the United States. PARTICIPANTS Aviation employees who were tested for drugs during 1995-2005 under the post-accident testing program (cases, n = 4977) or under the random testing program (controls, n = 1 129 922). MEASUREMENTS Point prevalence of drug violation...

2013
A. Gettelman C. Chen

[1] A comprehensive general circulation model (GCM) is used to estimate the climate impact of aviation emissions of black carbon (BC) and sulfate (SO4) aerosols. Aviation BC is found not to exert significant radiative forcing impacts, when BC nucleating efficiencies in line with observations are used. Sulfate emissions from aircraft are found to alter liquid clouds at altitudes below emission (...

Journal: :مهندسی صنایع 0
سید حسام¬الدین ذگردی دانشیار بخش مهندسی صنایع- دانشگاه تربیت مدرس محسن صادق عمل¬نیک دانشیار دانشکده مهندسی صنایع و سیستم ها-پردیس دانشکده های فنی-دانشگاه تهران محمد یاوری دانشجوی دکترای مهندسی صنایع- دانشگاه تربیت مدرس

in this paper a new problem of three stage disassembly-assembly scheduling is introduced and reviewed. this problem, which was arisen from the aviation industry characteristics, is a generalization of the two stage assembly scheduling problem. products (helicopters) in the aviation industry return to assembler for annual overhaul repair services. in the first stage helicopters are disassembled ...

Journal: :Energies 2021

The present work provides an analysis of the potential impact fossil-based Low Carbon Aviation Fuels (LCAF) for European aviation sector, with a time horizon to 2050. LCAF are crude-derived alternative kerosene, offering some Green House Gas (GHG) savings, and have been defined by ICAO as eligible fuels mitigating environmental aviation. A methodological framework evaluate EU technical producti...

2016
Guy P. brasseur Mark Z. Jacobson Patrick Minnis chenG Zhou Guy P. Brasseur

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