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AHS Maglev System Architecture
(Virginia Tech, 1999-08-23)
In the period between 1993-1998 a vision was presented of an Automated Highway System developed under a contract naming Virginia Tech one of the three ITS Research Centers of Excellence in the United States by the Federal ...
A Methodology for the Development of a Production Experience Database for Earthmoving Operations Using Automated Data Collection
(Virginia Tech, 1999-05-26)
Automated data acquisition has revolutionized the reliability of product design in recent years. A noteworthy example is the improvement in the design of aircrafts through field data. This research proposes a similar ...
The Kinetics, Biochemical Patterns, and Microbial Ecology in Multiredox (Anoxic, Microaerobic, Aerobic) Activated Sludge Systems Treating BTX Containing Wastewater
(Virginia Tech, 1999-09-02)
BTX biodegradation rates, biochemical expression patterns and microbial ecology were studied under anoxic (denitrifying), anoxic/microaerobic/aerobic, and anoxic/microaerobic conditions in activated sludge sequencing batch ...
Java Applets for Analysis of Trusses, Beams and Frames
(Virginia Tech, 1998-07-27)
Java applets are developed to assist in the learning of basic structural analysis concepts. In order for these programs to be easily available over the Internet, they are written in the object-oriented Java programming ...
Effect of Spatial Scale on Hydrologic Modeling in a Headwater Catchment
(Virginia Tech, 1999-01-29)
In this study, two hydrologic models were applied to the mountainous Back Creek catchment, located in the headwaters of the Roanoke River in Southwest Virginia. The two models employed were HEC-1, an event based lumped ...
Three-Dimensional Nonlinear Dynamics of a Moored Cylinder to be Used as a Breakwater
(Virginia Tech, 1999-04-05)
A three-dimensional, nonlinear dynamic analysis
is conducted on a fully submerged, rigid, solid
cylinder to be used as a breakwater. The breakwater
could potentially be used as a single cylinder to
protect small ...
Investigation of Steel Joist Supported Wood Floor Systems
(Virginia Tech, 1997-02-01)
This study investigates four aspects associated with steel joist supported wood floor systems: 1) acceptability, 2) prediction of deflection, 3) prediction of frequency, and 4) effects of diagonal bracing. Six full scale ...
Determination of Optimum Tack Coat Application Rate for Geocomposite Membrane Use in Roads and Overlaid Bridge Decks
(Virginia Tech, 1999-11-18)
Two critical components of the United States civil infrastructure, bridges and roads, have deteriorated in the past two decades at an accelerated rate and are in need of maintenance and rehabilitation. Geosynthetics may ...
Bioflocculation: Implications for Activated Sludge Properties and Wastewater Treatment
(Virginia Tech, 1998-07-23)
Studies were conducted to determine the role of bioflocculation in the activated sludge unit processes. Laboratory and full-scale studies revealed that bioflocculation is important in determining settling, dewatering, ...
Three-Dimensional Analysis of Moored Cylinders Used as Breakwaters
(Virginia Tech, 1997-12-05)
For oblique and normal water waves at various frequencies, the use of moored cylinders as breakwaters is considered numerically using linear three-dimensional analysis. The breakwater can be used by itself for protection ...