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The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations. Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.

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Showing 34281 - 34300 of 35412 results
  • The use of simple indicators for detecting potential coronary heart disease susceptibility in the thirdclass airman population
    The use of simple indicators for detecting potential coronary heart disease susceptibility in the third-class airman population.
    Lategola, Michael T.
    1972-07-01 | PDF
    An analysis was made of an eight-year interval change in several Framingham Heart Study (FHS) indicators of coronary heart disease (CHD) susceptibility as measured on 475 male air traffic control (ATC) personnel. The initial measurements were obtained from these personnel as ATC students in 1960- 1963 and the subsequent data were obtained eight yea ...
  • Selfestimates of distractibility as related to performance decrement on a task requiring sustained attention
    Self-estimates of distractibility as related to performance decrement on a task requiring sustained attention.
    Thackray, Richard I. ;
    Jones, Karen N.
    1972-07-01 | PDF
    Increasing automation of air traffic control tasks may have the undesirable side effect of increased monotony as a result of the anticipated reduction in task demands. 50 subjects performed a monotonous, but perceptually demanding task, for approximately 30 minutes without rest.It was found that high-distractibility subjects (as determined from a q ...
  • A preliminary study of maximal control force capability of female pilots
    A preliminary study of maximal control force capability of female pilots.
    Karim, Bonne ;
    Bergey, Karl H.
    1972-07-01 | PDF
    The growing number of female pilots entering the field of civil aviation has suggested the need for a study of the maximum allowable forces which should be specified for operating aircraft controls.Therefore, a study was made of the maximal voluntary forces which a sample of 25 female pilots could exert on each flight control. Further, the percent ...
  • G effects on the pilot during aerobatics
    G effects on the pilot during aerobatics.
    Mohler, Stanley R.
    1972-07-01 | PDF
    Sport, precision, and competitive aerobatics, and especially air show and demonstration flying are enjoying a rebirth of interest exceeding that of the 1930's. Improved aerobatic airplanes and power plants are in the hands of more civilian pilots than ever before. These aircraft enable the pilot to easily initiate maneuvers which exceed human toler ...
  • Criteria for Guardrail Need and Location on Embankments Volume II Computer Input and Sample Output
    Criteria for Guardrail Need and Location on Embankments Volume II: Computer Input and Sample Output
    Ross Jr, Hayes E. ;
    Post, Edward R.
    1972-07-01 | PDF
    The objectives of the study are to apply mathematical simulation techniques in determining the dynamic behavior of automobiles and their occupants when in collision with various roadside objects or when traversing curves in the road, shoulders, or other situations. It is a continuing study, having been initiated in September 1968.
  • Sonic booms and sleep affect change as a function of age
    Sonic booms and sleep : affect change as a function of age.
    Smith, Roger C. ;
    Hutto, Gary L.
    1972-06-01 | PDF
    The study concerned the measurement of mood changes resulting from simulated sonic booms occurring during sleep. Subjects from three age groups (21 to 26, 40 to 45, and 60 to 72 years old) spent 21 consecutive nights in a sleeping room equipped for sonic-boom simulation. During the sixth through seventeenth nights, simulated sonic booms of 1.0 psf ...
  • Guidelines for the design of subsurface drainage systems for highway structural sections
    Guidelines for the design of subsurface drainage systems for highway structural sections
    Cedergren, Harry R. ;
    O'Brien, Ken H.
    1972-06-01 | PDF
    Design criteria and a design method for pavement subsurface drainage systems include inflow-outflow method of analysis, open graded drainage layers, collector drains, pipe outlets and markers. Design examples are given for embankment sections, cut sections and superelevated curves. Emphasis is on draining water that infiltrates the pavement structu ...
  • A DiscreteElement Method for Transverse Vibrations of BeamColumns Resting on Linearly Elastic or Inelastic Supports
    A Discrete-Element Method for Transverse Vibrations of Beam-Columns Resting on Linearly Elastic or Inelastic Supports
    Chan, Jack Hsiao-Chieh ;
    Matlock, Hudson
    1972-06-01 | PDF
    A discrete-element method of analysis for transverse vibration of beam columns resting on linearly or nonlinearly-elastic, or nonlinearly-inelastic, supports is presented. The applied forces include static fixed loads and time dependent dynamic loads. The program is an extension of programs BMCOL 43 (Research Report No. 56-4) and DBCI (Research Rep ...
  • Attitudes Opinions and Expectations of Businessmen in a Planned Freeway Corridor
    Attitudes, Opinions, and Expectations of Businessmen in a Planned Freeway Corridor
    Burke, Dock ;
    Buffington, Jesse L.
    1972-06-01 | PDF
    This report presents the results of a survey conducted in an area in Houston, Texas, that has been designated a freeway corridor. The survey focuses upon the attitudes, opinions, and expectations of persons who own or operate businesses that lie within the corridor. The data are analyzed with regard to the following topics: businessmen's knowledge ...
  • Document Accompanying Patients Aboard Military Common Carriers
    Document Accompanying Patients Aboard Military Common Carriers
    United States. Dept. of the Army  ...
    1972-05-15 | PDF
    This revision generally updates the entire text. The title has been changed to better described the subject matter. Instructions for completing forms have been deleted throughout, wherever entries are self-explanatory. Terminology, references and titles of forms have been updated. The most significant changes are: establishes the requirement to ret ...
  • The use of simple indicators for detecting potential coronary heart disease susceptibilty in the air traffic controller population
    The use of simple indicators for detecting potential coronary heart disease susceptibilty in the air traffic controller population.
    Lategola, Michael T.
    1972-05-01 | PDF
    An analysis was made of an eight-year interval change in several indicators of coronary heart disease (CHD) susceptibility as measured on 475 male air traffic control (ATC) personnel. The initial measurements were obtained from these personnel as ATC students in 1960-1963 and the subsequent data were obtained eight years later from their current ae ...
  • Residual performance effects of simulated sonic booms introduced during sleep
    Residual performance effects of simulated sonic booms introduced during sleep.
    Chiles, W. Dean ;
    West, Georgetta
    1972-05-01 | PDF
    Twenty-four male subjects were tested on a complex performance device involving monitoring, mental arithmetic, and pattern discrimination. Three age-groups were used: 20 to 26, 40 to 45, and 60 to 72. Subjects were tested for 30 minutes each morning and each evening for a 21-day period. On the sixth through the 17th nights, subjects were exposed to ...
  • A proposed new test for aptitude screening of air traffic controller applicants
    A proposed new test for aptitude screening of air traffic controller applicants.
    Cobb, Bart B. ;
    Mathews, John J.
    1972-05-01 | PDF
    The study concerns the development and experimental validation of a novel aptitude test, referred to as 'Directional Headings' (or DHT), for the selection of Air Traffic Control Specialist (ATCS) trainees. The test requires the subject to rapidly interpret letters, symbols, and degrees in order to determine: directional headings (Part I), the exact ...
  • High temperature and performance in a flight task simulator
    High temperature and performance in a flight task simulator.
    Iampietro, P.F. ;
    Melton, C.E.
    1972-05-01 | PDF
    The effects of high cockpit temperature on physiological responses and performance were determined on pilots in a general aviation simulator. The pilots (all instrument rated) 'flew' an instrument flight while exposed to each of three cockpit temperatures: 25.0C (77F), 43.3C (110F), 60.0C (140F). Each flight lasted about 50 minutes.Performance was ...
  • Aviation medicine translations annotated bibliography of recently translated material VII
    Aviation medicine translations : annotated bibliography of recently translated material, VII.
    Jones, Karen N. ;
    Goulden, D.R.
    1972-05-01 | PDF
    An annotated bibliography of translations of foreign-language articles is presented. The 25 listed entries are concerned with studies in aviation medicine, vertigo and nystagmus, physical science, hypoxia, vision, altitude, drugs, binaural hearing, time shifts, gravity effects, perception, decompression, and sonic boom. Procedures for obtaining cop ...
  • Methodology in the measurement of complex human performance twodimensional compensatory tracking
    Methodology in the measurement of complex human performance : two-dimensional compensatory tracking.
    Jennings, Alan E. ;
    Chiles, W. Dean
    1972-05-01 | PDF
    Nineteen subjects were tested on two successive days on a complex performance device designed to measure functions of relevance to aircrew performance; included were measures of monitoring, information processing, pattern discrimination, and group problem solving. The effects of a perceptual-motor-tracking task were evaluated by measuring performan ...
  • A study of the StateTrait Anxiety Inventory and the assessment of stress under simulated conditions
    A study of the State-Trait Anxiety Inventory and the assessment of stress under simulated conditions.
    Smith, Roger C.
    1972-05-01 | PDF
    One approach to the measurement of stress in ATC and other aviation personnel is through assessment of anxiety. One means of accomplishing this is to use the State-Trait Anxiety Inventory (STAI), a 40-item self-report technique. In order to determine if stress can be simulated on the STAI, the responses of 283 subjects obtained under normal instruc ...
  • A comparative study of female and male air traffic controller trainees
    A comparative study of female and male air traffic controller trainees.
    Cobb, Bart B. ;
    Mathews, John J.
    1972-05-01 | PDF
    The study compares age, education, pre-FAA experience, aptitudes, training-course performance measures, and post-Academy attrition rates of the 83 women who entered basic air traffic control (ATC) training at the FAA Academy during November 1968 through March 1970 with those of various samples of the 3,760 males who entered training during the same ...
  • A Nonlinear Analysis of Statically Loaded Plane Frames Using a Discrete Element Model
    A Nonlinear Analysis of Statically Loaded Plane Frames Using a Discrete Element Model
    Hays, Clifford O. ;
    Matlock, Hudson
    1972-05-01 | PDF
    A discrete element analysis which considers geometric, material, and support nonlinearities of statically loaded plane frames is developed. A computer program has been written to implement and verify the analysis. Frame geometry, loads, cross sections, and supports (nonlinear concentrated and distributed springs) can be sufficiently general to work ...
  • A DiscreteElement Method of Analysis for Orthogonal Slab and Grid Bridge Floor Systems
    A Discrete-Element Method of Analysis for Orthogonal Slab and Grid Bridge Floor Systems
    Panak, John J. ;
    Matlock, Hudson
    1972-05-01 | PDF
    A method is presented for the discrete-element analysis of isotropic or orthotropic slabs and plates on elastic supports. An integral grid-beam system can also be included which makes it especially useful for highway bridge structures. Other structures such as highway and airfield pavements on elastic foundations, flat or hunched building slabs, tw ...
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