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Full-Text Articles in Physical Sciences and Mathematics
Computer Methodology For Transportation Agencies To Screen Technologies For Hazardous Waste Remediation, William J. Grenney, Ravi Kumar Penmetsa
Computer Methodology For Transportation Agencies To Screen Technologies For Hazardous Waste Remediation, William J. Grenney, Ravi Kumar Penmetsa
Reports
Executive Summary: Many pathways exist for transportation agencies and other public and private agencies to become responsible for sites contaminated by hazardous wastes. As a reult, agencies frequently face a multitude of lega, regulatory, financial, technical, and health risk problems. When transportation agencies become involved in the remediation of hazardous waste sites, the common practice is to hire consultants and contractors for the clean up process. Because the field of hazardous waste site remediation is changing so rapidly, agency personnel evaluating the consultant's recommendations need to ahve access to the most recent regulatory and remediation information. Early stages of the …
Effectiveness Determination Of Two Different Water-Saving Devices For Toilet Tanks, C. Earl Israelsen, Gilberto Urroz
Effectiveness Determination Of Two Different Water-Saving Devices For Toilet Tanks, C. Earl Israelsen, Gilberto Urroz
Reports
Introduction: The project was successful in obtaining eight different brands of new toilet tanks in the 3.5 gals-per-flish-bariety, and two used ones requiring 5.0 gals per flish. The tanks were installed on a t atime on a padded stell frame and connected to a water supply. The float was adjusted to maintain the water in the tank at the level recommended by the manufacturer. When the flush and shut-off mechanisms were adjusted properly, the testing begain.
Interpretation Of Drill Log Data: Dlog3d - A Probabilistic Tool For Analyzing Subsurface Soil Variability, Alaa El-Din Ali, Upmanu Lall
Interpretation Of Drill Log Data: Dlog3d - A Probabilistic Tool For Analyzing Subsurface Soil Variability, Alaa El-Din Ali, Upmanu Lall
Reports
Groundwater contamination potential is directly related to the location of zones of high hydraulic conductivity. Sedimentary depositional environments can be quite complex. Pockets of sand of varying thickness and orientation may be scattered over the aquifer. A contaminant pathway can esist where these pockets or lenses are interconnected. Aquifer pump tests do not provide useful information on the occurrence of such lenses. Drill log data directly sample the soil, but may represent very local sections of the aquifer, and are of relatively poor quality. Here we present a methodology (DLOG3D) that allows a probabilistic interpretation of drill log data that …
Development Of Mountain Climate Generator And Snowpack Model For Erosion Predictions In The Western United States Using Wepp: Phase Iv, David S. Bowles, U. Lall, D. G. Tarboton, E. Malek, B. Rajagopalan, T. Chowdhury, E. Kluzak
Development Of Mountain Climate Generator And Snowpack Model For Erosion Predictions In The Western United States Using Wepp: Phase Iv, David S. Bowles, U. Lall, D. G. Tarboton, E. Malek, B. Rajagopalan, T. Chowdhury, E. Kluzak
Reports
Executive Summary: Introduction: This report summarizes work conducted during the funding period (December 1, 1991 through September 30, 1992) of a Research Joint Venture Agreement between the Intermountain Research Station, Forest Service, U. S. Department of Agriculture and the Utah Water Research Laboratory (UWRL), Utah State University (USU). The purpose of the agreement is to develop a Western Mountain Cilmate Generator (MCLIGEN) similar in function to the existing (non-orographic area) Climate Generator (CLIGEN), which is part of the Water Erosion Prediciton Project (WEPP) procedure. Aso, we are developing a Western U.S. Snowpack Simulation Model for includsion in WEPP. In the …
A Prototype Computer Based Tutorial For The Use Of Highway Patrol Radar Guns, William J. Grenney, Thad E. Senti
A Prototype Computer Based Tutorial For The Use Of Highway Patrol Radar Guns, William J. Grenney, Thad E. Senti
Reports
Executive Summary: The software contained in this package, termed POSAT (Police Officer Standards and Training) is the prototype knowledge-base decision support system developed specifically for the Utah State Police Academy. All police officers must be certified annual for the use of radar guns. This self-study computer program is intended to reduce the cost of providing field training for hundreds of police officers each year. By installing the POSAT software at remote locations, polic officers within a certain districut need only to travel to the nearest remote testing sight to take the exam and renew their radar certification. POSAT automatically transmits …
Simulation Of Daily Precipitation From A Nonparametric Renewal Model, Balaji Rajagopalan, Upmanu Lall, David G. Tarboton
Simulation Of Daily Precipitation From A Nonparametric Renewal Model, Balaji Rajagopalan, Upmanu Lall, David G. Tarboton
Reports
Wet/dry spell characteristics of daily precipitation are of interest for a number of hydrologic applications (e.g., flood forecasting or assessment of erosion potential). Here, we examine issues related to designing an appropriate nonparametric scheme that focuses on spell characteristics for resampling historically daily precipitation data. A subset of the nonparametric wet/dry spell model presented in Lall et al (1993) is tested with synthetic data to justify the strategy proposed for applications. An application of the nonparametric wet/dry spell model to a Utah data set follows. Performance is judged on a set of statistical measures. Numerical comparisons of model performance with …
A Kernel Quantile Function Estimator For Flood Frequency Analysis, Young-Ii Moon, Upmanu Lall
A Kernel Quantile Function Estimator For Flood Frequency Analysis, Young-Ii Moon, Upmanu Lall
Reports
A kernel estimator (KQ) of the quantile function is presented here. Boundary kernels are used for extrapolation of tail quantiles. The bandwidth of the estimator is chosen using an automatic, "plus-in" method. Confidence intervals for the estimated quantile are estimated by bootstrapping. Comparisons of the estimator with selected tail probability estimators are offered. The KQ estimator presented here is shown to be competitive with other estimators.