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You searched for publisher:"University of Nevada Las Vegas". Showing records 1 – 3 of 3 total matches.

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University of Nevada, Las Vegas

1. Wilcox, Trevor. Criticality studies of actinides within fissures.

Degree: 2010, University of Nevada, Las Vegas

The storage of nuclear waste in underground storage facilities presents numerous engineering challenges and risks. Experimental verification of engineered underground storage is impractical or prohibitively expensive, leaving scientists with few options. A 1995 report by Bowman and Venneri of the Los Alamos National Laboratory generated considerable controversy by hypothesizing that wastes composed of fissionable plutonium leached from underground storage containers could pose a nuclear criticality hazard. They proposed cases where plutonium collected in underground fractures could lead to sustained nuclear fission. In overmoderated cases, they argued that the resulting release of energy from fission could result in steam explosions, or even an underground nuclear explosion (autocriticality). Their hypothesis had severe implications for the feasibility of long-term nuclear waste storage in geologic repositories. The Bowman and Venneri hypothesis led to the need for a study of conditions that could lead to a critical event in a geologic repository due to releases of uranium or plutonium. Information about the likely consequences of a critical event is also important in repository design. To accomplish this study a numerical simulation code, GEOCRIT, was written to model radionuclide transport from the repository into a fracture below the repository. Once sufficient material has accumulated in the fracture and rock matrix, the neutronics portion of the code is started to simulate heat generation and fluid flow. The thermohydraulics portion of the code calculates heat generation from fission, stream functions, velocity, and pressure of the fluid in the fracture and rock matrix. The transport portion of the code incorporates numerous parameters that can be varied to simulate different radionuclide buildup in the fracture and rock matrix. Variation of the solubility, diffusion, deposition coefficients in the program yield different accumulations of radionuclides in the fracture and rock matrix. In each case the majority of the deposition occurs in the fracture and adjacent rock matrix. The variation in accumulated radionuclides led to different neutron distributions within the fracture and rock matrix. In each case the largest neutron flux is in the fracture leading to the highest temperature also being within the fracture. The increase in temperature leads to a transient bifurcating flow within the rock matrix. One potential risk for the geological repository is the buildup of radionuclide in the saturated rock with subsequent drying out of the rock matrix. This case is known as overmoderation, whereby the neutron flux increases as the water dries out. It has been hypothesized that certain configurations of radionuclides may be overmoderated and drying out of the water in the rock may lead to a critical event. Three cases of overmoderation were simulated with the code. Three different levels of accumulation of radionuclides within the fracture and rock matrix, with subsequent…

Subjects/Keywords: Engineering, Mechanical; Engineering, Nuclear

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Wilcox, T. (2010). Criticality studies of actinides within fissures. (Thesis). University of Nevada, Las Vegas. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=3396383

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Wilcox, Trevor. “Criticality studies of actinides within fissures.” 2010. Thesis, University of Nevada, Las Vegas. Accessed January 18, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=3396383.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Wilcox, Trevor. “Criticality studies of actinides within fissures.” 2010. Web. 18 Jan 2019.

Vancouver:

Wilcox T. Criticality studies of actinides within fissures. [Internet] [Thesis]. University of Nevada, Las Vegas; 2010. [cited 2019 Jan 18]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3396383.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wilcox T. Criticality studies of actinides within fissures. [Thesis]. University of Nevada, Las Vegas; 2010. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3396383

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of Nevada, Las Vegas

2. Woodworth, William Wallace, IV. Ernest Farrar, "English Pastoral Impressions", Op. 26| A transcription for wind orchestra.

Degree: 2010, University of Nevada, Las Vegas

This document contains a transcription of Ernest Farrar's <i> English Pastoral Impressions</i> for the instrumentation of wind orchestra. The original setting of this work was for symphony orchestra. The document contains historical information relating to the work and composer, a thorough description of the actual transcription process for this project, and the finished transcription for wind orchestra.

Subjects/Keywords: Music

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Woodworth, William Wallace, I. (2010). Ernest Farrar, "English Pastoral Impressions", Op. 26| A transcription for wind orchestra. (Thesis). University of Nevada, Las Vegas. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=3396386

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Woodworth, William Wallace, IV. “Ernest Farrar, "English Pastoral Impressions", Op. 26| A transcription for wind orchestra.” 2010. Thesis, University of Nevada, Las Vegas. Accessed January 18, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=3396386.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Woodworth, William Wallace, IV. “Ernest Farrar, "English Pastoral Impressions", Op. 26| A transcription for wind orchestra.” 2010. Web. 18 Jan 2019.

Vancouver:

Woodworth, William Wallace I. Ernest Farrar, "English Pastoral Impressions", Op. 26| A transcription for wind orchestra. [Internet] [Thesis]. University of Nevada, Las Vegas; 2010. [cited 2019 Jan 18]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3396386.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Woodworth, William Wallace I. Ernest Farrar, "English Pastoral Impressions", Op. 26| A transcription for wind orchestra. [Thesis]. University of Nevada, Las Vegas; 2010. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3396386

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of Nevada, Las Vegas

3. Pereda, Ramon. Information extraction in an optical character recognition context.

Degree: 2011, University of Nevada, Las Vegas

In this dissertation, we investigate the effectiveness of information extraction in the presence of Optical Character Recognition (OCR). It is well known that the OCR errors have no effects on general retrieval tasks. This is mainly due to the redundancy of information in textual documents. Our work shows that information extraction task is significantly influenced by OCR errors. Intuitively, this is due to the fact that extraction algorithms rely on a small window of text surrounding the objects to be extracted. We show that extraction methodologies based on the Hidden Markov Models are not robust enough to deal with extraction in this noisy environment. We also show that both precise shallow parsing and fuzzy shallow parsing can be used to increase the recall at the price of a significant drop in the precision. Most of our experimental work deals with the extraction of dates of birth and extraction of postal addresses. Both of these specific extractions are part of general methods of identification of privacy information in textual documents. Privacy information is particularly important when large collections of documents are posted on the Internet.

Subjects/Keywords: Computer Science

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Pereda, R. (2011). Information extraction in an optical character recognition context. (Thesis). University of Nevada, Las Vegas. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=3464808

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Pereda, Ramon. “Information extraction in an optical character recognition context.” 2011. Thesis, University of Nevada, Las Vegas. Accessed January 18, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=3464808.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Pereda, Ramon. “Information extraction in an optical character recognition context.” 2011. Web. 18 Jan 2019.

Vancouver:

Pereda R. Information extraction in an optical character recognition context. [Internet] [Thesis]. University of Nevada, Las Vegas; 2011. [cited 2019 Jan 18]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3464808.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pereda R. Information extraction in an optical character recognition context. [Thesis]. University of Nevada, Las Vegas; 2011. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3464808

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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