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80
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476
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93
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Analysis of Self-Similar Solutions of Multidimensional Conservation Laws
This project brought large-scale, advanced methods for numerical solution of PDE to bear on the two-dimensional Riemann problem, and obtained numerical solution of problem. This numerical solution allowed us to describe key features of the solution. Analysis was combined with numerical solution to explain these numerical results. High-resolution, large-scale numerical computations show for the #12;first time that a shock forms strictly in the supersonic region. Numerical solutions appear to show the disappearance of a diffracting shock at a sonic line.
Date:
August 31, 2012
Creator:
Tesdall, Allen M.
Object Type:
Report
System:
The UNT Digital Library
Analysis of the Band Gap Type Dataset
None
Date:
August 24, 2012
Creator:
Kamath, C
Object Type:
Report
System:
The UNT Digital Library
Analysis of the IFA-432, IFA-597, and IFA-597 MOX Fuel Performance Experiments by FRAPCON-3.4
Validation of advanced nuclear fuel modeling tools requires careful comparison with reliable experimental benchmark data. A comparison to industry-accepted codes, that are well characterized, and regulatory codes is also a useful evaluation tool. In this report, an independent validation of the FRAPCON-3.4 fuel performance code is conducted with respect to three experimental benchmarks, IFA-432, IFA-597, and IFA-597mox. FRAPCON was found to most accurately model the mox rods, to within 2% of the experimental data, depending on the simulation parameters. The IFA-432 and IFA-597 rods were modeled with FRAPCON predicting centerline temperatures different, on average, by 21 percent.
Date:
August 1, 2012
Creator:
Phillippe, Aaron M; Ott, Larry J; Clarno, Kevin T & Banfield, James E
Object Type:
Report
System:
The UNT Digital Library
ANALYSIS OF THE TANK 5F FINAL CHARACTERIZATION SAMPLES-2011
The Savannah River National Laboratory (SRNL) was requested by SRR to provide sample preparation and analysis of the Tank 5F final characterization samples to determine the residual tank inventory prior to grouting. Two types of samples were collected and delivered to SRNL: floor samples across the tank and subsurface samples from mounds near risers 1 and 5 of Tank 5F. These samples were taken from Tank 5F between January and March 2011. These samples from individual locations in the tank (nine floor samples and six mound Tank 5F samples) were each homogenized and combined in a given proportion into 3 distinct composite samples to mimic the average composition in the entire tank. These Tank 5F composite samples were analyzed for radiological, chemical and elemental components. Additional measurements performed on the Tank 5F composite samples include bulk density and water leaching of the solids to account for water soluble species. With analyses for certain challenging radionuclides as the exception, all composite Tank 5F samples were analyzed and reported in triplicate. The target detection limits for isotopes analyzed were based on customer desired detection limits as specified in the technical task request documents. SRNL developed new methodologies to meet these target detection …
Date:
August 3, 2012
Creator:
Oji, L.; Diprete, D.; Coleman, C. & Hay, M.
Object Type:
Report
System:
The UNT Digital Library
Analytical Approaches Towards Understanding Structure-Property Relationships in End-Linked Model PDMS Networks
None
Date:
August 30, 2012
Creator:
Lewicki, J P; Albo, R F; Alviso, C T; Ashmore, M; Harley, S J; Finnie, J A et al.
Object Type:
Article
System:
The UNT Digital Library
Annual Site Environmental Report for Calendar Years 2009 to 2010
This report presents the results of environmental activities and monitoring programs at the Princeton Plasma Physics Laboratory (PPPL) for Calendar Years 2009-2010. The report provides the U.S. Department of Energy (DOE) and the public with information on the level of radioactive and non-radioactive pollutants, if any, that are released into the environment as a result of PPPL operations. The report also summarizes environmental initiatives, assessments, and programs that were undertaken in 2009-2010. The objective of the Site Environmental Report is to document PPPL's efforts to protect the public's health and the environment through its environmental protection, safety, and health programs. __________________________________________________
Date:
August 8, 2012
Creator:
Finley, Virginia
Object Type:
Report
System:
The UNT Digital Library
Antigravity
This dissertation contains two parts: Part I, which discusses the elegy of possessive intent, a subgenre of the contemporary American elegy; and Part II, Antigravity, a collection of poems. English elegies have been closely rooted to a specific grief, making the poems closer to occasional poems. The poet—or at least the poet’s speaker—seeks some kind of public consolation for (often) a private loss. The Americanized form does stray from the traditional elegy yet retains some of its characteristics. Some American elegies memorialize failed romantic relationships rather than the dead. In their memorials, these speakers seek a completion for the lack the broken relationship has created in the speakers’ lives. What they can’t replace, they substitute with something personal. As the contemporary poem becomes further removed from tradition, it’s no surprise that the elegy has evolved as well. Discussions of elegies have never ventured into the type of elegy that concerns itself with the sort of unacknowledged loss found in some contemporary American poems of unrequited love. These poems all have speakers who willfully refuse to acknowledge the loss of their love-objects and strive to maintain control/ownership of their beloveds even in the face of rejection.
Date:
August 2012
Creator:
Bowen, Ashley Hamilton
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Application of Chebyshev Formalism to Identify Nonlinear Magnetic Field Components in Beam Transport Systems
An experiment was conducted at Jefferson Lab's Continuous Electron Beam Accelerator Facility to develop a beam-based technique for characterizing the extent of the nonlinearity of the magnetic fields of a beam transport system. Horizontally and vertically oriented pairs of air-core kicker magnets were simultaneously driven at two different frequencies to provide a time-dependent transverse modulation of the beam orbit relative to the unperturbed reference orbit. Fourier decomposition of the position data at eight different points along the beamline was then used to measure the amplitude of these frequencies. For a purely linear transport system one expects to find solely the frequencies that were applied to the kickers with amplitudes that depend on the phase advance of the lattice. In the presence of nonlinear fields one expects to also find harmonics of the driving frequencies that depend on the order of the nonlinearity. Chebyshev polynomials and their unique properties allow one to directly quantify the magnitude of the nonlinearity with the minimum error. A calibration standard was developed using one of the sextupole magnets in a CEBAF beamline. The technique was then applied to a pair of Arc 1 dipoles and then to the magnets in the Transport Recombiner beamline to …
Date:
August 1, 2012
Creator:
Spata, Michael
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Applying Human Factors Evaluation and Design Guidance to a Nuclear Power Plant Digital Control System
The United States (U.S.) nuclear industry, like similar process control industries, has moved toward upgrading its control rooms. The upgraded control rooms typically feature digital control system (DCS) displays embedded in the panels. These displays gather information from the system and represent that information on a single display surface. In this manner, the DCS combines many previously separate analog indicators and controls into a single digital display, whereby the operators can toggle between multiple windows to monitor and control different aspects of the plant. The design of the DCS depends on the function of the system it monitors, but revolves around presenting the information most germane to an operator at any point in time. DCSs require a carefully designed human system interface. This report centers on redesigning existing DCS displays for an example chemical volume control system (CVCS) at a U.S. nuclear power plant. The crucial nature of the CVCS, which controls coolant levels and boration in the primary system, requires a thorough human factors evaluation of its supporting DCS. The initial digital controls being developed for the DCSs tend to directly mimic the former analog controls. There are, however, unique operator interactions with a digital vs. analog interface, and …
Date:
August 1, 2012
Creator:
Ulrich, Thomas; Boring, Ronald; Phoenix, William; Dehority, Emily; Whiting, Tim; Morrell, Jonathan et al.
Object Type:
Report
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), Vol. 104, No. 31, Ed. 1 Thursday, August 2, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
August 2, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), Vol. 104, No. 32, Ed. 1 Thursday, August 9, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
August 9, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), Vol. 104, No. 33, Ed. 1 Thursday, August 16, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
August 16, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), Vol. 104, No. 34, Ed. 1 Thursday, August 23, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
August 23, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), Vol. 104, No. 35, Ed. 1 Thursday, August 30, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
August 30, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archival and Archeological Research: Camino Real de los Tejas and Texas State Parks
Report on the route of El Camino Real as it extends through four Texas State Parks.
Date:
August 2012
Creator:
Weddle, Robert S.
Object Type:
Report
System:
The Portal to Texas History
Argonne Leadership Computing Facility 2011 Annual report : Shaping Future Supercomputing.
The ALCF's Early Science Program aims to prepare key applications for the architecture and scale of Mira and to solidify libraries and infrastructure that will pave the way for other future production applications. Two billion core-hours have been allocated to 16 Early Science projects on Mira. The projects, in addition to promising delivery of exciting new science, are all based on state-of-the-art, petascale, parallel applications. The project teams, in collaboration with ALCF staff and IBM, have undertaken intensive efforts to adapt their software to take advantage of Mira's Blue Gene/Q architecture, which, in a number of ways, is a precursor to future high-performance-computing architecture. The Argonne Leadership Computing Facility (ALCF) enables transformative science that solves some of the most difficult challenges in biology, chemistry, energy, climate, materials, physics, and other scientific realms. Users partnering with ALCF staff have reached research milestones previously unattainable, due to the ALCF's world-class supercomputing resources and expertise in computation science. In 2011, the ALCF's commitment to providing outstanding science and leadership-class resources was honored with several prestigious awards. Research on multiscale brain blood flow simulations was named a Gordon Bell Prize finalist. Intrepid, the ALCF's BG/P system, ranked No. 1 on the Graph 500 list …
Date:
August 16, 2012
Creator:
Papka, M.; Messina, P.; Coffey, R. & Drugan, C. (LCF)
Object Type:
Report
System:
The UNT Digital Library
Armed Conflict in Syria: U.S. and International Response
None
Date:
August 20, 2012
Creator:
Sharp, Jeremy M.
Object Type:
Report
System:
The UNT Digital Library
Armed Conflict in Syria: U.S. and International Response
This report looks at the recent conflict in Syria, particularly casualty estimates and an assessment of possible future scenarios. A large part of the report looks at U.S. policy towards Syria, including how Congress will handle humanitarian dilemmas, security of Syrian Weapons of Mass Destruction, and how the country is open to opportunities for terrorism recruitment. It also looks at key developments that have occurred during the conflict, including support of the Asad government, political dynamics, and minority communities. The report ends with a look at the Syrian economy and current/possible sanctions.
Date:
August 21, 2012
Creator:
Sharp, Jeremy M. & Blanchard, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
The Art Car Spectacle: a Cultural Display and Catalyst for Community
This auto-ethnographic study focuses on Houston’s art car community and the grassroots movement’s 25 year relationship with the city through an art form that has created a sense of community. Art cars transform ordinary vehicles into personally conceived visions through spectacle, disrupting status quo messages of dominant culture regarding automobiles and norms of ownership and operation. An annual parade is an egalitarian space for display and performance, including art cars created by individuals who drive their personally modified vehicles every day, occasional entries by internationally renowned artists, and entries created by youth groups. A locally proactive public has created a movement has co-opted the cultural spectacle, creating a community of practice. I studied the events of the Orange Show Center for Visionary Art’s Art Car Weekend to give me insight into art and its value for people in this community. Sources of data included the creation of a participatory art car, journaling, field observation, and semi-structured interviews. The first part is my academic grounding, informed by critical pedagogy and socially reconstructive art practices. The second part narrates my experiences and understandings of the community along with the voices of others. Dominant themes of exploration include empowerment, community, and art. I …
Date:
August 2012
Creator:
Stienecker, Dawn
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Asia-Pacific Economic Cooperation (APEC) Meetings in Vladivostok, Russia: A Preview
Russia will host the Asia-Pacific Economic Cooperation's (APEC) week-long series of senior-level meetings in Vladivostok on September 2-9, 2012. The main event for the week will be the 20th APEC Economic Leaders' Meeting to be held September 8-9, 2012. This report looks at the main points of this meeting as they relate to the U.S.
Date:
August 16, 2012
Creator:
Martin, Michael F.
Object Type:
Report
System:
The UNT Digital Library
Assembly and Packaging of a Wireless, Chronically-Implantable Neural Prosthetic Device
None
Date:
August 6, 2012
Creator:
Shah, K G; DeLima, T; Benett, W; Felix, S; Sheth, H; Tolosa, V et al.
Object Type:
Article
System:
The UNT Digital Library
An Assessment of Fruit Offerings for 7Th and 8Th Grade Students in Texas
Childhood obesity in America is reaching epidemic proportions. This study explored whether daily online lunch menu information was sufficient to enable parents to advise their children about healthy and unhealthy menu choices in 350 Texas middle schools and whether online menu information strongly correlated with the descriptions of the offerings given by 52 school cafeteria managers in telephone interviews. Although schools are making efforts to describe their offerings, they are not vigorously taking advantage of the opportunity to aggressively inform or educate. They are not coding their descriptions in such a way as to explicitly brand food as healthy or unhealthy. They are also not labeling food as generally required by law for consumer services that provide food (except for the fresh produce that lines supermarket shelves). Instead, they only briefly describe what they are serving in the way of fruit in one or two word snippets. Finally, cafeteria managers’ online descriptions were inconsistent with what they described in interviews. Online and verbal descriptions were sometimes contradictory, raising questions about the accuracy of either type of description.
Date:
August 2012
Creator:
Paschal, Ryan Tyler
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Assessment of lesser prairie-chicken lek density relative to landscape characteristics in Texas
My 2.5-yr Master'Âs project accomplished the objectives of estimating lesser prairie-chicken (LPC) lek density and abundance in the Texas occupied range and modeling anthropogenic and landscape features associated with lek density by flying helicopter lek surveys for 2 field seasons and employing a line-transect distance sampling method. This project was important for several reasons. Firstly, wildlife managers and biologists have traditionally monitored LPC populations with road-based surveys that may result in biased estimates and do not provide access to privately-owned or remote property. From my aerial surveys and distance sampling, I was able to provide accurate density and abundance estimates, as well as new leks and I detected LPCs outside the occupied range. Secondly, recent research has indicated that energy development has the potential to impact LPCs through avoidance of tall structures, increased mortality from raptors perching on transmission lines, disturbance to nesting hens, and habitat loss/fragmentation. Given the potential wind energy development in the Texas Panhandle, spatial models of current anthropogenic and vegetative features (such as transmission lines, roads, and percent native grassland) influencing lek density were needed. This information provided wildlife managers and wind energy developers in Texas with guidelines for how change in landscape features could impact …
Date:
August 31, 2012
Creator:
Timmer, Jennifer; Butler, Matthew; Ballard, Warren; Boal, Clint & Whitlaw, Heather
Object Type:
Report
System:
The UNT Digital Library
Assessment of the Financial and Intellectual Value of a Research Library and its Application at the Idaho National Laboratory
Over the last several decades, libraries across the nation have undergone dramatic budget cuts, despite being an important resource for regional and national economic growth and innovation. Numerous studies have attempted to show that libraries increase the intellectual level of users and contribute to the economic growth of communities through surveys and customer service data. Within this study, we have attempted to develop a more analytical method for assessing library performance, using the Idaho National Laboratory Research Library as a sample subject. We have developed a mathematical model to measure the financial value of a library’s material resources as well as its intellectual value to determine if the library is a positive contributor to the wider organization and community it serves.
Date:
August 1, 2012
Creator:
Melander, Lynn E.
Object Type:
Report
System:
The UNT Digital Library