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Showing 34621 - 34640 of 36747 results
  • An Evaluation of Railroad Safety
    An Evaluation of Railroad Safety
    Peat, Marwick, Mitchell, and Co.  ...
    1978-05-01 | PDF
    The Federal Railroad Safety Authorization Act of 1976 required an evaluation of the effectiveness of Federal efforts to improve the safety of U.S. railroads. This report provides a comprehensive and systematic review of safety to assist in current and future legislative deliberations on railroad safety. It includes an examination of current acciden ...
  • Annual Report of the Maritime Administration 1977 MARAD 1977
    Annual Report of the Maritime Administration 1977 [MARAD 1977]
    United States. Maritime Administration
    1978-05-01 | Annual Reports of the Maritime Administration | PDF
    Annual report of the Maritime Administration for fiscal year 1977. The report describes in detail all of the Agency's efforts to promote and maintain a strong American merchant marine.
  • Integrated Motorist Information System IMIS Feasibility and Design Study Phase II Generalized Methodology for IMIS Feasibility Studies Volume 1 IMIS Feasibility Study Handbook
    Integrated Motorist Information System (IMIS) Feasibility and Design Study: Phase II: Generalized Methodology for IMIS Feasibility Studies: Volume 1 - IMIS Feasibility Study Handbook
    Zove, P. ;
    Berger, C.
    1978-05-01 | PDF
    Phase I of the IMIS project examined the feasibility of implementing an Integrated Motorist Information System in a corridor located in New York (northern Long Island). The results are documented in report numbers FHWA-RD-77-47, 48 and 49. Under Phase II of IMIS (the present phase), the methodology for performing an IMIS feasibility study was gener ...
  • 1977 TravelTime and Auto Occupancy Study for the Kansas City Metropolitan Region
    1977 Travel-Time and Auto Occupancy Study for the Kansas City Metropolitan Region
    Mid-America Regional Council  ...
    1978-05-01 | PDF
    This report presents the findings of the 1977 Travel-time and Auto Occupancy studies undertaken by MARC, in cooperation with the Missouri State Highway Department and the Kansas Department of Transportation. The program ran from June 1, 1977 to August 15, 1977, with additional data collected in the fall of 1977. The primary purpose of this study wa ...
  • The effects of altitude and two decongestantantihistamine preparations on physiological functions and performance
    The effects of altitude and two decongestant-antihistamine preparations on physiological functions and performance.
    Higgins, E.A. ;
    Chiles, W.D.
    1978-04-01 | PDF
    Fourteen men were studied to determine the combined effects of two altitudes (ground level (1,274 ft) and 12,500 ft), and three preparations (lactose placebo, Compound A (Actifed - Registered Trade Name), and Compound B (Dristan - Registered Trade Name). Physiological data show that A was a stimulant and B a depressant. Subjects reported least subj ...
  • Styrenebutadiene latex modifiers for bridge deck overlay concrete
    Styrene-butadiene latex modifiers for bridge deck overlay concrete.
    Clear, Kenneth C. ;
    Chollar, Brian H.
    1978-04-01 | PDF
    Styrene-butadiene (S/B) latex modified concrete overlays are being used to protectnew bridge decks from rapid deicer-borne chloride intrusion and also in bridgedeck rehabilitation efforts. The purposes of this research were to evaluate severalcommercially-available S/B latex modifiers for bridge deck overlay concrete; and todevelop chemical specifi ...
  • Experimental attempts to evoke a differential response to different stressors
    Experimental attempts to evoke a differential response to different stressors.
    Melton, C.E. ;
    McKenzie, J.M.
    1978-04-01 | PDF
    Ten paid male subjects each worked at a physical task with no competitive element (treadmill) and a competitive task ('Pong') with minimal physical activity. There were three work periods, each 50 min long. Ten minutes were allowed for rest and urine collection after each work period. The experimental period lasted 3 h. Urine was analyzed for 17-ke ...
  • Psychophysiological effects of aging developing a functional age index for pilots II Taxonomy of psychological factors
    Psychophysiological effects of aging : developing a functional age index for pilots. II., Taxonomy of psychological factors.
    Gerathewohl, Siegfried J.
    1978-04-01 | PDF
    One of the major objectives of gerontological aviation psychology is to determine the psychological variables, functions, abilities, skills, and factors that underlie, constitute or are associated with pilot performance and proficiency. They must be identified, analyzed, and measured if functional age is to be substituted for chronological age as a ...
  • The morbidity experience of air traffic control personnel 19671977
    The morbidity experience of air traffic control personnel, 1967-1977.
    Booze, C.F.
    1978-04-01 | PDF
    The morbidity experience of 28,086 air traffic controllers has been examined from 1967-77 with particular emphasis given the potential effects of job demands on ATC Health. The morbidity experience of air traffic controllers does not appear excessive when compared with the experience of other outside groups studied, except for psychoneurotic disord ...
  • North Dakota Grain Transportation Statistics 197677
    North Dakota Grain Transportation Statistics 1976–77
    Cosgriff, John G
    1978-04-01 | PDF
    This report represents a continuation of analyses concerned with the patterns and methods of distributing grain from North Dakota. The collection and compilation of this type of data began in 1956-57. The objective of this report, like its predecessors, is to provide the necessary data base for identifying trends in the distribution of grains from ...
  • Cardiorespiratory assessment of decongestantantihistamine effects of altitude Gz and fatigue tolerances
    Cardiorespiratory assessment of decongestant-antihistamine effects of altitude, +Gz, and fatigue tolerances.
    Lategola, Michael T. ;
    Davis, Audie W.
    1978-04-01 | PDF
    Decongestants and antihistamines are known to produce effects capable of adversely modifying physiological function and psychomotor task performance. Because of relevance to safe pilot performance, the effects of single doses of two decongestant-antihistamine preparations (Compound A and Compound B), or a placebo on cardiorespiratory responses to t ...
  • Comparative readability of enroute low altitude charts with and without terrain depiction
    Comparative readability of enroute low altitude charts with and without terrain depiction.
    Rasmussen, Paul G. ;
    Welsh, Kenneth W.
    1978-04-01 | PDF
    The U.S. National Ocean Survey has issued an experimental copy of Enroute Low Altitude Chart L-3/4 dated April 21, 1977, as part of a program to explore the feasibility of introducing terrain depiction on the charts. The FAA's Air Traffic Service (AAT-1) requested the Office of Aviation Medicine to determine what derogatory effects such a change mi ...
  • Aeromedical implications of the XChrom lens for improving color vision deficiencies
    Aeromedical implications of the X-Chrom lens for improving color vision deficiencies.
    Welsh, Kenneth W. ;
    Vaughan, John A.
    1978-04-01 | PDF
    The X-Chrom contact lens is a recent device recommended to improve defective color vision. The red lens is usually worn on the nondominant eye and may require extended wearing for optimum color vision enhancement. A battery of tests was given to 24 individuals, 12 with normal and 12 with defective color vision. A mix was made between standard clini ...
  • Control of hot mix production by cold feed only final report
    Control of hot mix production by cold feed only : final report.
    Carey, Donald E.
    1978-04-01 | PDF
    This report is concerned with an analysis of the gradation control possible with recently improved aggregate cold feed systems. The gradation control for three mix types produced in a screenless batch plant was monitored and statistically compared with this state's historically documented control performance for batch plants with screens. The resul ...
  • Automobile Marketing Strategies Pricing and Product Planning April 1978
    Automobile Marketing Strategies, Pricing, and Product Planning [April 1978]
    Hagerman, Marc L. ;
    John, Z.
    1978-04-01 | PDF
    The objective of this study was to determine the decision-making processes concerning major model year product introductions and alterations in the automotive industry as well as to investigate techniques of price positioning, product and image positioning, and the use of incentives and other promotional tools. The method used was to establish the ...
  • Emerging Transportation Planning Methods
    Emerging Transportation Planning Methods
    Brown, William F ;
    Dial, Robert B.
    1978-03-15 | PDF
    In 1976 the Office of University Research organized and conducted a 4-day seminar to instruct transportation planners in the theory, utility, and application of emerging transportation planning techniques and to encourage their widespread use. Three basic subjects were chosen for indepth examination: (1) Transportation demand forecasting techniques ...
  • Yard Computer Systems Suggestions for Additional Work
    Yard Computer Systems: Suggestions for Additional Work
    Wong, Peter J
    1978-03-02 | PDF
    Current work has uncovered a myriad of conflicting design considerations and philosophies. Computer and communication technologies are rapidly changing. Each railroad generally sees its needs as unique, so they need a customized system. The goals of additional work should be to develop a chapter in the handbook which would: 1.Present fundamental in ...
  • Energy absorption of gravel mounds for truck escape ramps
    Energy absorption of gravel mounds for truck escape ramps.
    Beecroft, Gordon
    1978-03-01 | PDF
    Escape ramps, used to stop trucks that have had brake failures on long downhill grades, are usually constructed in terrain where an ascending grade can be utilized to assist in stopping the vehicles. An arrester bed of noncompacting gravel is typically used to assist in stopping the truck and to prevent roll-back of trucks after having stopped. In ...
  • Spatial disorientation in general aviation accidents
    Spatial disorientation in general aviation accidents.
    Kirkham, William R. ;
    Collins, William E.
    1978-03-01 | PDF
    Spatial disorientation (SD) refers to an incorrect self-appraisal of the attitude or motion of the pilot and his aircraft with respect to the earth. This paper defines elements of SD problems as encountered in general civil aviation. Accident reports made by the National Transportation Safety Board for a recent 6-year period were reviewed. Statisti ...
  • Child restraint systems for civil aircraft
    Child restraint systems for civil aircraft.
    Chandler, Richard F. ;
    Trout, Edwin M.
    1978-03-01 | PDF
    Child restraint systems have been developed to provide protection to children involved in automobile crashes. These systems are not yet approved for use in civil aircraft. Six typical systems were exposed to controlled impacts on a test sled to simulate aircraft crash conditions; these systems were inverted to simulate turbulence. A special test se ...
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