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Showing 27501 - 27520 of 35629 results
  • Application of the RADTRAN 5 Stop Model
    Application of the RADTRAN 5 Stop Model
    Neuhauser, K. S. ;
    Weiner, R. F.
    1998-04-08 | PDF
    It is the intent of this paper first to compare results from RADTRAN 4 (Neuhauser and Kanipe, 1992) and RADTRAN 5 for the old, low-resolution form of input data, and then to demonstrate what effect the new data and input format have on stop-dose estimates for an individual stop and for a hypothetical shipment route. Finally, these estimated public ...
  • GISbased accident location and analysis system GISALAS project report phase I
    GIS-based accident location and analysis system (GIS-ALAS) : project report : phase I
    Souleyrette, Reg ;
    Strauss, Tim
    1998-04-06 | PDF
    This report summarizes progress made in Phase I of the geographic information system (GIS) based Accident Location and Analysis System (GIS-ALAS). The GIS-ALAS project builds on PC-ALAS, a locationally-referenced highway crash database query system developed by the Iowa Department of Transportation (IDOT). Users can query the database by location a ...
  • Predictive Methodology for Delamination Growth in Laminated Composites Part 1 Theoretical Development and Preliminary Experimental Results
    Predictive Methodology for Delamination Growth in Laminated Composites Part 1: Theoretical Development and Preliminary Experimental Results
    Davidson, Barry
    1998-04-01 | PDF
    A methodology is presented for the prediction of delamination growth in laminated structures. The methodology is aimed at overcoming computational difficulties in the determination of energy release rate and mode mix. It also addresses the issue that many laminated composites exhibit large-scale crack tip damage zones and, as such, a singular field ...
  • Activation of the I394 Laboratory for ITS Operational Testing Phase II
    Activation of the I-394 Laboratory for ITS Operational Testing (Phase II)
    Reynhout, Kenneth ;
    Michalopoulos, Panos
    1998-04-01 | PDF
    The key element in improving traffic operations and performing real-time management is the ability to assess the effectiveness of various alternatives prior to implementation. Likewise, the crucial feature for providing this capability is a Traffic Data Management System (TDMS), which gathers data and makes it available for various for various traf ...
  • FlowInduced Structural Response of a 15Scale Olmsted Wicket Model
    Flow-Induced Structural Response of a 1:5-Scale Olmsted Wicket Model
    Hall, Robert L. ;
    Chowdhury, Mostafiz R.
    1998-04-01 | PDF
    Olmsted Locks and Dam (L&D) is one of the largest civil works projects undertaken by the U. S. Army Corps of Engineers (USACE) to lead the modernization effort of navigational facilities for the twenty-first century. Maintaining a robust navigational infrastructure to facilitate the water-borne transportation and to meet the demand for the ever-inc ...
  • Cost Effective Analysis of Recycled Products for Use in Highway Construction
    Cost Effective Analysis of Recycled Products for Use in Highway Construction
    Gupta, J. D.
    1998-04-01 | PDF
    Over 4.5 billion of non-hazardous wastes are generated in the United States each year. Out of these wastes over 200 million tons of post consumer waste is generated. The disposal of post consumer waste is the responsibility of municipality and society. Fo;See also PB94-198140. Sponsored by Federal Highway Administration, Columbus, OH. Ohio Div. and ...
  • Compliance Testing of an End Treatment for the LowProfile Concrete Barrier
    Compliance Testing of an End Treatment for the Low-Profile Concrete Barrier
    Beason, W. Lynn ;
    Menges, Wanda
    1998-04-01 | PDF
    Full-scale crash testing was completed in this project to assure that a previously developed low profile end treatment complies with test level 2 criteria for terminals and redirective crash cushions as presented in NCHRP Report 350. Together, the new end treatment and the low-profile barrier provide an innovative barrier system acceptable for use ...
  • Aviation Security Implementation of Recommendations Is Under Way but Completion Will Take Several Years
    Aviation Security: Implementation of Recommendations Is Under Way, but Completion Will Take Several Years
    United States. Government Accountability Office
    1998-04-01 | PDF
    As the threat of terrorist activities has increased in the United States, the need to improve domestic aviation security has grown. Currently, the Federal Aviation Administration (FAA), other federal agencies, and the aviation industry are implementing 31 recommendations on aviation security made by the White House Commission on Aviation Safety and ...
  • Automated Inspection of Aircraft
    Automated Inspection of Aircraft
    Alberts, C.J. ;
    Carroll, C.W.
    1998-04-01 | PDF
    This report summarizes the development of a robotic system designed to assist aircraft inspectors by remotely deploying non-destructive inspection (NDI) sensors and acquiring, processing, and storing inspection data. Carnegie Mellon University studied the task of aircraft inspection, compiled the functional requirements for an automated system to i ...
    Supporting Files
  • Final Report on Analysis of Corridor Delay Under SCATS Adaptive Control System Orchard Lake Road Corridor
    Final Report on Analysis of Corridor Delay Under SCATS Adaptive Control System (Orchard Lake Road Corridor)
    Taylor, William C ;
    Abdel-Rahim, Ahmed S
    1998-04-01 | PDF
    The study was designed to determine the change in travel time following the implementation of the Sydney Coordinated Adaptive Traffic System (SCATS) in Oakland County, Michigan. A before/after comparison was used to examine the change in travel time on a specific corridor (Orchard Lake Road). The results of the study showed that corridor travel-tim ...
  • US Coast Guard use of DOD funds for national security functions
    U.S. Coast Guard : use of DOD funds for national security functions
    United States. Government Accountability Office
    1998-04-01 | PDF
    The $$300 million was transferred to the Coast Guard in compliance with the statutorily required certification by the Secretary of Transportation and the Secretary of Defense that those funds would be used only for the performance of national security functions. The funds were transferred to the operating expense account from which all Coast Guard ...
  • Fire Testing of EthanolBased Hand Cleaner
    Fire Testing of Ethanol-Based Hand Cleaner
    Marker, Timothy R. ;
    Do, Dung
    1998-04-01 | PDF
    A variety of laboratory and full-scale fire tests were conducted on an ethanol-based gel-type hand cleaner currently used in commercial aircraft lavatories. The waterless-type hand cleaner has a relatively low flash point, raising concern over its fire safety when in use in the galley area of commercial transport aircraft where radiant ovens are of ...
  • Acoustic Emission Test for Aircraft Halon 1301 Fire Extinguisher Bottles
    Acoustic Emission Test for Aircraft Halon 1301 Fire Extinguisher Bottles
    Beattie, A.G.
    1998-04-01 | PDF
    An acoustic emission test for aircraft Halon 1301 bottles has been developed, a prototype acoustic emission test system constructed, and over 200 used bottles tested at the repair facilities of the two manufacturers of these bottles. The system monitors a bottle with six acoustic sensors while the pressure of the bottle is raised by heating it in a ...
  • StressIntensity Factors for Elliptical Cracks Emanating from Countersunk Rivet Holes
    Stress-Intensity Factors for Elliptical Cracks Emanating from Countersunk Rivet Holes
    Gosz, M. ;
    Moran, B.
    1998-04-01 | PDF
    Small cracks developing from rivet holes in lap joints of fuselage structure have been an issue of concern over the past decade. Stress-intensity factor solutions required to assess the structural integrity of such configurations are lacking. To address this need, the domain integral method was used in this research to obtain the mode I, normalized ...
  • Marginal Aggregates in Flexible Pavements Field Evaluation
    Marginal Aggregates in Flexible Pavements: Field Evaluation
    Ahlrich, Randy C.
    1998-04-01 | PDF
    The purpose of this study was to evaluate the utilization of substandard or marginal aggregates in flexible pavement construction of airport pavements. This investigation was undertaken to evaluate the effects of using lower quality aggregates such as rounded uncrushed gravels and sands on the rutting of flexible pavements. The scope of this resear ...
  • Initial Development of an Exploding Aerosol Can Simulator
    Initial Development of an Exploding Aerosol Can Simulator
    Marker, Timothy
    1998-04-01 | PDF
    A device was constructed to simulate an exploding aerosol can. The device consisted of a cylindrical pressure vessel for storage of flammable propellants and base product and a high-rate discharge (HRD) valve for quick release of the constituents. Simulator tests were conducted using representative constituents and propellant quantities for compari ...
  • Rural Air Fare Study
    Rural Air Fare Study
    United States. Department of Transportation. Office of the Secretary
    1998-04-01 | PDF
    This study is in response to the congressional request in Section 1213 of theFederal Aviation Administration Reauthorization Act of 1996 for information onair service and fares at small communities. It is a follow-up to the InitialService Analysis report submitted in January 1997 and covers available fareinformation and analysis.
  • Fatigue performance of variable message sign luminaire support structures volume I fatigue related wind loads on highway support structures
    Fatigue performance of variable message sign & luminaire support structures : volume I, fatigue related wind loads on highway support structures
    Consolazio, G. R. ;
    Johns, K. W.
    1998-04-01 | PDF
    In Order to determine equivalent static pressures for fatigue loads on cantilevered highway support structures acantilevered Variable Message Sign(VMS) located along Interstate westbound at mile marker 48.5 in northernNew Jersey was continuously monitored for three months. The structure was instrumented with strain gages,pressure transducers, and a ...
  • Evaluation of concrete characteristics for rigid pavements
    Evaluation of concrete characteristics for rigid pavements.
    Lane, D. S.
    1998-04-01 | PDF
    The researcher developed correlations among flexural, split tensile, and compressive strengths and ultrasonic pulse velocity from laboratory testing using materials and mix designs proposed for use in a paving project. These relationships were used to review the current Virginia Department of Transportation specifications and quality control proced ...
  • EastWest transport corridor feasibility study phase 1 vol 2 development plans final report
    East-West transport corridor feasibility study : phase 1, vol. 2 : development plans : final report
    Bechtel Group
    1998-04-01 | PDF
    This study, conducted by Bechtel International, was funded by the U.S. Trade and Development Agency. The member countries of the South Balkan Initiative Program (Albania, Macedonia, and Bulgaria) are seeking to improve their transportation infrastructure and quality of transportation services along Corridor 8 (East-West Corridor). The East-West Cor ...
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