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Showing 36361 - 36380 of 36747 results
  • Problems in air traffic management VII Job training performance of air traffic control specialists measurement structure and prediction
    Problems in air traffic management. VII., Job training performance of air traffic control specialists - measurement, structure, and prediction.
    Trites, David K. ;
    Miller, M. Clinton
    1965-07-01 | PDF
    A statistical study of training- and job-performance measures of several hundred Air Traffic Control Specialists (ATCS) representing Enroute, Terminal, and Flight Service Station specialties revealed that training-performance measures reflected:1.performance in the training laboratories;2.academic performance; and3.instructors' opinions.In the job- ...
  • Problems in air traffic management V Identification and potential aptitude test measures for selection of tower air traffic controller trainees
    Problems in air traffic management. V., Identification and potential aptitude test measures for selection of tower air traffic controller trainees.
    Cobb, Bart B.
    1965-07-01 | PDF
    A study of over 200 Terminal Air Traffic Control Specialists indicated that their training performance could be well predicted by a composite of four aptitude tests measuring: numerical ability, non-verbal abstract reasoning, ability to solve simplified air traffic problems, and verbal abstract reasoning. Pre-employment experience directly related ...
  • Tolerances of the human face to crash impact
    Tolerances of the human face to crash impact.
    Swearingen, John J.
    1965-07-01 | PDF
    Evaluation of the injury potentials of commercial airline seat structures, light-aircraft instrument panels, and other deforming structures requires data on forces that produce fractures, lacerations, or unconsciousness when applied to different parts of the face. Unconscious commercial passengers, although not seriously burned, may asphyxiate or b ...
  • Problems in air traffic management VI Interaction of trainingentry age with intellectual and personality characteristics of air traffic control specialists
    Problems in air traffic management. VI., Interaction of training-entry age with intellectual and personality characteristics of air traffic control specialists.
    Trites, David K.
    1965-07-01 | PDF
    Over 900 Enroute and Terminal Air Traffic Controller Specialist (ATCS) trainees were administered a large number of aptitude and personality tests. Examination of the relationships between the performance scores and age at entry into training revealed that:1.older trainees had lower test scores than the younger trainees on tests of immediate memory ...
  • ATC system error and appraisal of controller proficiency
    ATC system error and appraisal of controller proficiency.
    O'Connor, William F. ;
    Pearson, Richard G.
    1965-07-01 | PDF
    The report presents suggestions for the design of an air traffic control (ATC) incident-reporting system aimed at maximizing the amount of corrective feedback to the ATC system. The approach taken is system-oriented rather than controller-oriented. Included is a discussion of a philosophy of corrective and punitive action relative to controller inv ...
  • Inbound Gulf Freeway Ramp Control Study II
    Inbound Gulf Freeway Ramp Control Study II
    Pinnell, Charles ;
    Drew, Donald R.
    1965-07-01 | PDF
    The level of service on the inbound Gulf Freeway during the morning peak period has been well documented as a result of research conducted by the Texas Transportation Institute in cooperation with the Texas Highway Department and the U.S, Bureau of Public Roads. In addition to the freeway studies, critical intersections on the arterial streets and ...
  • Gap Acceptance Characteristics for RampFreeway Surveillance and Control
    Gap Acceptance Characteristics for Ramp-Freeway Surveillance and Control
    Drew, Donald R.
    1965-07-01 | PDF
    The purpose of this investigation was to determine gap acceptance characteristics and merging delay characteristics for six inbound entrance ramps on the Gulf Freeway Surveillance and Control Project. A 20-pen graphic recorder operated by four men stationed adjacent to the merging area between the freeway and the frontage road was used in collectin ...
  • Investigation of an Internal Energy Model for Evaluating Freeway Level of Service
    Investigation of an Internal Energy Model for Evaluating Freeway Level of Service
    Drew, Donald R. ;
    Dudek, Conrad L.
    1965-06-01 | PDF
    For the past several years researchers have attempted to describe "level of service" in both qualitative and quantitative terms. There is a need to establish parameters that: (1) reflect the quality of the trip or "level of service" afforded the motorist, and (2) are predictable for a given set of conditions. The energy-acceleration noise model is ...
  • Stochastic Considerations in Freeway Operations and Control
    Stochastic Considerations in Freeway Operations and Control
    Drew, Donald R.
    1965-06-01 | PDF
    The objectives of this study were to: 1. Formulate and test a moving-queue model of traffic flow based on the assumption that the lengths of moving queues reflect congestion, just as stationary queues reflect congestion in classical queuing theory; 2. Describe freeway congestion quantitatively; 3. Suggest which of the traffic characteristics and pa ...
  • Deterministic Aspects of Freeway Operations and Control
    Deterministic Aspects of Freeway Operations and Control
    Drew, Donald R.
    1965-06-01 | PDF
    The purpose of this investigation is to establish some of the control parameters necessary to provide a quantitative knowledge of freeway operations and a rational basis for future freeway surveillance and control. Traffic operations should be defined characterized and described as particular states of traffic flow, thus affording the means of deve ...
  • Adaptation to vestibular disorientation I Vertigo and nystagmus following repeated clinical stimulation
    Adaptation to vestibular disorientation. I, Vertigo and nystagmus following repeated clinical stimulation.
    Collins, William E.
    1965-05-01 | PDF
    Forty unilateral caloric irrigations were administered in a habituation series to each of two groups of subjects. One group was tested in total darkness. Subjects in the second group were stimulated in illumination and actively attempted to control and suppress their eye movements by means of visual fixation. Pre- and post-tests were administered ( ...
  • Use of typical moisture density curves
    Use of typical moisture : density curves.
    Higgins, C. M.
    1965-05-01 | PDF
    One of the many problems associated with compaction control on any construction project is the time consuming task of obtaining maximum density and optimum moisture content of soils both in the laboratory and in the field. In addition to the time element, there seems to be a relatively large operator variance in performing this particular aspect of ...
  • Hardening of 85100 Penetration Asphalt Cements During Service in Pavement
    Hardening of 85–100 Penetration Asphalt Cements During Service in Pavement
    Traxler, R. N.
    1965-05-01 | PDF
    Objective: To determine changes in hardness that occur in an asphalt cement while the hot paving mixture is being prepared and laid and during the early (one year) service life of the pavement surface.
  • Survival of highvelocity freefalls in water
    Survival of high-velocity free-falls in water.
    Snyder, Richard G.
    1965-04-01 | PDF
    Forty-four cases of free-falls survived by individuals impacting water environments under conditions of high velocity (50 to 116 ft/sec, corrected for aerodynamic drag) have been intensively investigated and analyzed. Ages varied from 7 to 80 years and the study included 34 males and 10 females.The falls occurred in 17 states, mainly over a 3-year ...
  • Aviation medicine translations annotated bibliography of recently translated material III
    Aviation medicine translations : annotated bibliography of recently translated material, III.
    Allen, Mary Ellen ;
    Collins, William E.
    1965-04-01 | PDF
    An annotated bibliography of translations of foreignlanguage research articles is presented. The 26 listed entries are concerned with studies of aviation medicine, periodicity, optokinetic nystagmus, vision, vestibular function, and physical science. Procedures for obtaining copies of the translations are included.
  • The equidistance tendency and its consequences problems in depth perception
    The equidistance tendency and its consequences : problems in depth perception.
    Gogel, Walter C.
    1965-04-01 | PDF
    The equidistance tendency is the tendency for objects or other inhomogeneities in the field-of-view to appear at the same distance as each other with the strength of this tendency being inversely related to directional separation. The evidence for the existence of the equidistance tendency and for its ability to modify the perceived depth resulting ...
  • Some Considerations of Vehicular Density on Urban Freeways
    Some Considerations of Vehicular Density on Urban Freeways
    Haynes, John J.
    1965-04-01 | PDF
    This report includes parts of a general study of the various aspects of vehicular density for use in the control of freeway traffic. Density is herein considered singly as a possible control element of a freeway operational system. This study provides information which may be useful for freeway control methods. Electronic equipment manufacturers sh ...
  • Biomedical survey of ATC facilities 1 Incidence of selfreported symptoms
    Biomedical survey of ATC facilities, 1. Incidence of self-reported symptoms.
    Hauty, George T. ;
    Trites, David K.
    1965-03-01 | PDF
    From six enroute and six terminal air traffic control facilities selected on the basis of differences between shift rotation schedules and high IFR traffic volume, 300 journeymen and assistant controllers were selected as volunteer subjects to complete a biomedical inventory daily for a period of 90 consecutive days. The inventory elicited informat ...
  • Fatigue in aviation activities
    Fatigue in aviation activities.
    Mohler, Stanley R.
    1965-03-01 | PDF
    The report gives a comprehensive survey of work in the field of aviation fatigue. Both current work still in process and earlier work are surveyed. The nature of fatigue itself is discussed, along with all possible factors that contribute to both physical and mental fatigue. Topics covered include flight-time limitations, indicators of excessive fa ...
  • Paint study progress report No 1 Louisiana highway research
    Paint study : progress report No. 1 : Louisiana highway research.
    Louisiana. Department of Highways
    1965-03-01 | PDF
    The principle objectives of this study are arrive at the most economical atmospheric paint system for structural steel and to correlate weatherometer exposure with atmospheric exposure. Three sites in Louisiana have been selected - they are Baton Rough, Chase, and Houma.
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