Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 8 of 8
Full-Text Articles in Entire DC Network
Investigation On The Ap-42 Sampling Method, Yanjie Chen
Investigation On The Ap-42 Sampling Method, Yanjie Chen
UNLV Retrospective Theses & Dissertations
The Las Vegas area has been designated by the U.S. EPA as a serious PM 10 non-attainment area. To monitor PM10 in this area, dust data have been collected quarterly using the AP-42 method. According to this method, the number of composite sample sizes (the number of sample sites) needs to be determined first. In the actual dust data collection at each of these sample sites, a procedure with the specifications of the number and locations of incremental samples (plots) and their sizes (i.e., length) has to be followed. Apparently, there has been no rule existing that can be used …
A Method For Estimating Intensity Of A Poisson Process, Sandhya Gunti
A Method For Estimating Intensity Of A Poisson Process, Sandhya Gunti
UNLV Retrospective Theses & Dissertations
Motivated by its vast applications, we investigate ways to estimate the intensity of a Poisson process. Much of the work on modeling and analysis of repairable systems is based on the assumption of a special type of nonhomogeneous Poisson process (NHPP) known as Weibull process or Power-law process. In this thesis, we link the traditional homogeneous and nonhomogeneous Poisson processes to the classical time series via a sequence of the empirical recurrence rates (ERR), calculated at equally spaced intervals of time. We consider a computationally simple algorithm to calculate the total area and also the area for the last ten …
The Collocation And Meshless Methods For Differential Equations In R(2), Thamira Abid Jarjees
The Collocation And Meshless Methods For Differential Equations In R(2), Thamira Abid Jarjees
UNLV Retrospective Theses & Dissertations
In recent years, meshless methods have become popular ones to solve differential equations. In this thesis, we aim at solving differential equations by using Radial Basis Functions, collocation methods and fundamental solutions (MFS). These methods are meshless, easy to understand, and even easier to implement.
Evapotranspiration Monitoring Methods Within An Irrigated Mixed Vegetation Environment, Jeremy Robert Dodds
Evapotranspiration Monitoring Methods Within An Irrigated Mixed Vegetation Environment, Jeremy Robert Dodds
UNLV Retrospective Theses & Dissertations
The Colorado River system is one of the most heavily used river systems in the world and as such, accurate water accounting methods are vital. The U.S. Bureau of Reclamation (Reclamation) is charged with accounting for the Colorado River's water use. One tool Reclamation uses to accomplish this is the Lower Colorado River Accounting System (LCRAS). This system uses a combination of remote sensing (RS) and a crop coefficient method to calculate agricultural and phreatophyte evapotranspiration (ET), a crucial component to any water budget. In this study, ET was measured within an irrigated mixed vegetation field (sapling cottonwood and willow, …
An Evaluation Of X-Ray Fluorescence Lead Detection Methods For Candy Wrappers, Louis J Abacherli
An Evaluation Of X-Ray Fluorescence Lead Detection Methods For Candy Wrappers, Louis J Abacherli
UNLV Retrospective Theses & Dissertations
Currently, it is expensive and time consuming for public health entities to test candy (and other consumer products) that has entered the consumer market in the United States. The XRF, on the other hand, provides a quick, economical, and easy method to test lead levels. It has been demonstrated in a variety of studies that x-ray fluorescence (XRF) can be used for testing lead levels in paint, soil, and testing in-vivo for bone. What has not been studied is the XRF's ability to test for lead in certain consumer items such as candy. This research was designed to identify XRF …
Quantitative Comparison Of Sample Preparation Methods For Low-Level Alpha Spectrometry, Sherry Alina Stock
Quantitative Comparison Of Sample Preparation Methods For Low-Level Alpha Spectrometry, Sherry Alina Stock
UNLV Retrospective Theses & Dissertations
There are currently several widely accepted methods of sample preparation procedures for alpha spectroscopy. Alpha spectroscopy is becoming more important due to increased concentration on nuclear waste management, site decontamination and decommissioning, and environmental assessment. Due to increased emphasis on emergency response and preparedness, there is a strong desire to make the analysis of samples as quick and efficient as possible. Three methods evaluated in this project are electrodeposition, microprecipitation, and evaporation. Actinides are the main elements of concern, namely a tracer of241Am is used. Each method is itself optimized and evaluated quantitatively, and then the methods are compared against …
Symphonic Dances, Op 64: A Transcription For Wind Orchestra With Accompanying Historical Context And Transcription Method, Clayborn Maurice Redfield
Symphonic Dances, Op 64: A Transcription For Wind Orchestra With Accompanying Historical Context And Transcription Method, Clayborn Maurice Redfield
UNLV Retrospective Theses & Dissertations
This document includes a transcription for wind orchestra of two movements from the orchestral suite Symphonic Dances Op. 64 by Edvard Grieg. An overview of the historical background of the composer and the transcription method are provided.*; *This dissertation is a compound document (contains both a paper copy and a CD as part of the dissertation). The CD requires the following system requirements: Sibelius Music Creation.
A Comparison Of Three Seismic Methods In The Arid Environment, David A. Gahr
A Comparison Of Three Seismic Methods In The Arid Environment, David A. Gahr
UNLV Retrospective Theses & Dissertations
Eight locations in the vicinity of Las Vegas, Nevada, were noise tested using a shotgun, high frequency geophones, and an engineering seismograph. The noise spreads were examined for reflection events to determine shotpoint to geophone offset for an optimum window reflection profile. No reflection events were observed in the noise spreads. Trial optimum offset lines were run at location 1 and location 8. The resulting profiles contain spurious reflecting horizons that appear to be teal reflectors. At the eighth location, a delay time profile and a series of over-lapping refraction soundings were performed at the site of the optimum offset …