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Showing 33121 - 33140 of 36747 results
  • Characteristics of medically disqualified airman applicants in calendar years 1982 and 1983
    Characteristics of medically disqualified airman applicants in calendar years 1982 and 1983.
    Dark, Shirley J.
    1985-09-01 | PDF
    This study presents comprehensive data reflecting pertinent denial rates with respect to the medical and general attributes of those airmen denied medical certification in calendar years 1982 and 1983.
  • Manual for Planning Designing and Operating Transitway Facilities in Texas Interim Report
    Manual for Planning, Designing, and Operating Transitway Facilities in Texas: Interim Report
    Mounce, John M. ;
    Stokes, Robert W.
    1985-09-01 | PDF
    Transitways are defined as exclusive, physically separated, access controlled high-occupancy vehicle (HOV) priority treatment facilities which are typically located within existing freeway right(s)-of-way. Transitways are sometimes referred to as busways, HOV lanes or AVLs (authorized vehicle lanes). This report was prepared for the Texas State Dep ...
  • Identification of SpecialUse Truck Traffic
    Identification of Special-Use Truck Traffic
    Mason, John M. ;
    Middleton, Dan R.
    1985-09-01 | PDF
    The principal objectives of this study were to identify specific special use commodities, determine vehicular and industry characteristics in the movement of these commodities, determine the areas in the state impacted by this movement, and to develop a procedure for predicting the reduction in pavement life due to special-use truck traffic. Most o ...
  • An analysis of tire tread wear groove patterns and the effect of heteroscedasticity on tire tread wear statistics
    An analysis of tire tread wear groove patterns and the effect of heteroscedasticity on tire tread wear statistics
    Walter, Robert ;
    Mengert, Peter
    1985-09-01 | PDF
    This report examines the groove wear variability among tires subjected to theUniform Tire Quality Grading (UTQC) test procedure for determining tire tread wear.The effects of heteroscedasticity (variable variance) on a previously reportedstatistical analysis were also examined. Two data sources were used: special tiretests performed by the Southwes ...
  • Development and Evaluation of a Prototype Life Preserver
    Development and Evaluation of a Prototype Life Preserver
    Rueschhoff, B.J. ;
    Higgins, E.A.
    1985-09-01 | PDF
    The purpose of this study was to develop a prototype life preserver that included provisions for:1.increased thermal protection in the event of accidental immersion in cold water,2.35 pounds of buoyancy,3.a doning [sic] time of 15 s for an adult,4.not weighing more nor requiring more storage space than currently used life preservers,5.fitting indiv ...
  • Effect of Color and Texture on the Surface Temperature of Asphalt Concrete Pavements
    Effect of Color and Texture on the Surface Temperature of Asphalt Concrete Pavements
    Berg, R. L.
    1985-09-01 | PDF
    From April 1982 through October 1983 surface temperatures were measured on seven asphalt concrete pavement test sections in Fairbanks. The seven test sections included an untreated asphalt concrete pavement, white-painted pavement, yellow-painted pavement, white marble C-chips, B-chips, dark grey C-chips and dark grey E-chips. Air temperatures were ...
  • AERA 2 SystemLevel Information Flows
    AERA 2 System-Level Information Flows
    Arthur, William C. ;
    Dubofsky, Dean F.
    1985-09-01 | PDF
    A functional view of AERA 2 processing within the AAS is presented. The AERA 2 functions are identified and located within the data processing activities of the AAS (AERA 1 processing is assumed to be present); processing responsibilities of the AERA 2 functions are addressed; data flows between AERA 2 functions and functions outside of AERA 2 are ...
  • USSR Report Transportation
    USSR Report: Transportation
    United States. Foreign Broadcast Information Service  ...
    1985-08-14 | PDF
    JPRS publications contain information primarily from foreign newspapers, periodicals and books, but also from news agency transmissions and broadcasts. Materials from foreign-language sources are translated; those from English-language sources are transcribed or reprinted, with the original phrasing and other characteristics retained.This serial re ...
  • Bridge Deck Designs for Railing Impacts
    Bridge Deck Designs for Railing Impacts
    Arnold, Althea ;
    Hirsch, T. J.
    1985-08-01 | PDF
    Current specifications by the American Association of State Highway and Transportation Officials (AASHTO) Standard Specifications for Highway Bridges set forth certain structural design requirements for bridge railings and the corresponding bridge decks. Observations of deck failure patterns in recent crash tests and observed deck failures at vehic ...
  • Correlation Studies of Fundamental Aggregate Properties with FreezeThaw Durability of Structural Lightweight Concrete
    Correlation Studies of Fundamental Aggregate Properties with Freeze-Thaw Durability of Structural Lightweight Concrete
    Ledbetter, W. B. ;
    Buth, Carl E.
    1985-08-01 | PDF
    The scope of this phase of the research study was to extend the knowledge gained from previous studies on the durability of structural lightweight concrete, and attempt to correlate (a) type of lightweight coarse aggregate, (b) cement factor, and (c) the freeze-thaw durability performance of selected concretes; utilizing the results obtained from p ...
  • Reduced lighting on freeways during periods of low traffic density
    Reduced lighting on freeways during periods of low traffic density
    Staplin, L. K. ;
    Janoff, M. S. (Michael S.)
    1985-08-01 | PDF
    The primary objective of this study was to determine if freeway lighting can be reduced or eliminated during nighttime periods when traffic volume is much lower than design capacity without causing significant reductions in the ability of drivers to control their vehicles in a safe and effective manner. This objective was met by the performance of ...
  • A Comparison of Postmortem Coronary Atherosclerosis Findings in General Aviation Pilot Fatalities
    A Comparison of Postmortem Coronary Atherosclerosis Findings in General Aviation Pilot Fatalities
    Booze, Charles F. ;
    Staggs, Clara M.
    1985-08-01 | PDF
    Autopsy reports of 710 pilots involved in fatal general aviation accidents and received by the FAA for the years 1980-82 were reviewed to appraise the age-specific prevalence of coronary atherosclerosis among the autopsied group and compare findings with those of an earlier study of a similar pilot group. Sixty-nine percent of the autopsies on pilo ...
  • Recommended Changes to Item 340 of the 1982 Standard Specifications
    Recommended Changes to Item 340 of the 1982 Standard Specifications
    Benson, Fred C. ;
    Gallaway, Bob M.
    1985-08-01 | PDF
    All of the proposed changes to the SOHPT 1982 Standard Specifications should eventually result in lowered life cycle costs of increasingly better performing Item 340 hot-mix paving layers. It is anticipated that proposed changes 1, 2, 7, 8 and 10 would result in slight increases in bid item prices for asphalt cements and aggregates utilized in SOHP ...
  • Automatic Retrieval of ATR Data
    Automatic Retrieval of ATR Data
    Lee, Jae Y. ;
    Yeom, Heon Y
    1985-08-01 | PDF
    This report describes and presents the results of a study to develop a microcomputer-based software to retrieve data automatically from the Automatic Traffic Recorders, ATR. The computer program presented in this report may be used on many other CP/M based microcomputer systems running MBASIC. The program has been developed in a high-level language ...
  • Recent Evaluation of Asphalt Aging in Hot Mix Plants 19831985 C Value Data
    Recent Evaluation of Asphalt Aging in Hot Mix Plants: 1983–1985 “C” Value Data
    Lund, John W. ;
    Wilson, James E.
    1985-08-01 | PDF
    Starting in 1981 and continuing through July of 1983, "C" value data were collected from 29 different projects in Oregon. Results from the study indicated that the overall operation and construction of asphalt plants, burner fuel type, mixing temperature and the use of bag house dust collectors had a significant influence on the tenderness of the p ...
  • Passing Scores for the FAA ATCS Color Vision Test
    Passing Scores for the FAA ATCS Color Vision Test
    Convey, John J.
    1985-08-01 | PDF
    In response to recommendations from the Office of Personnel Management for measures of normal color vision that reflects as closely as possible the functional color vision requirements for an air traffic controller (Christup, 1981), subtests which simulated ATC tasks were developed in three content areas:1.aircraft colors for fuselage and lights,2. ...
  • Drugs of Abuse in Aviation Fatalities 1 Marijuana
    Drugs of Abuse in Aviation Fatalities: 1. Marijuana
    Lacefield, Delbert J. ;
    Roberts, Patricia A.
    1985-08-01 | PDF
    Isopropyl alcohol swabs taken from the oral cavities of pilots killed in general aviation accidents were analyzed for marijuana by the modified Duquenois-Levine test. During the 2-year period from October 1982 through September 1984, 289 pilot fatalities ( of 809 sampled for other toxicological reasons) were sampled for marijuana; a positive test i ...
  • Breed Air Bag Sled Testing Program Volume II
    Breed Air Bag Sled Testing Program: Volume II
    Esser, R.
    1985-08-01 | PDF
    Sled tests were performed using a driver-only airbag system in conjunction with various belting systems to determine injury criteria using 5th, 50th, and 95th percentile dummies.
  • Evaluation of Aggregate Sieving Methods for HotMix Asphaltic Concrete Design and Production
    Evaluation of Aggregate Sieving Methods for Hot-Mix Asphaltic Concrete Design and Production
    Benson, Fred C. ;
    Ellis, Tommy D.
    1985-08-01 | PDF
    During the course of Research Study 2-9-80-285 "Asphalt Concrete Mixture Design and Specification," it was desired to address two questions concerning sieve analysis of hot-mix asphaltic concrete aggregates which are often raised by personnel of the Texas State Department of Highways and Public Transportation (SDHPT). These questions are as follows ...
  • Microcomputers in Transportation Transit Inventory System Case Study
    Microcomputers in Transportation: Transit Inventory System Case Study
    Rosen, Stan
    1985-08-01 | PDF
    This report describes the process of designing and implementing a transit parts inventory control system for a 65 bus transit operator. The microcomputer software was developed using the dBase II database management software program on an IBM-PC system with a hard disk. Accompanying software on floppy disk for IBM-PC or compatible may be ordered. U ...
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