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[2006 Intern Competition H.M. Fentress Memorial Award for Editorial Excellence]

Description: A document for the last call on nominations for the 2006 Intern Competition, H.M. Fentress Memorial Award for Editorial Excellence. First place winner will receive $250 in cash prize and the runner-up will receive $100 in cash prize. Nominations deadlines are September 15, 2006 and must meet the award qualifications.
Date: 2006
Creator: Texas Daily Newspaper Association
Partner: UNT Libraries Special Collections

[3rd Annual Cohesion Birthday Bash poster]

Description: Poster advertising the 3rd Annual Cohesion Birthday Bash on July 8, 2006, at Texas Jive, Denton, Texas. The concert, put on by Denton Cohesion collective, included Sleezus Fist and the Latter Day Taints, Save the Humans for Later, Opaque, The Mad Scientists, Idi Amin, Wake Up April, The Little Brothers, Buzz and Hum, The Wrecking Crew, DJ Lynnea, Craig Welch, McNasty, Paul Slavens, Christopher Largen, Will Kappinos, Frank Heijl, Will Riddenour, Keith Brown, and Mauveoed. Poster features an illustration of a jester holding a skull covered in candles in one hand and a bouquet of detached eyeball balloons in the other, emerging from a box. Event details are listed in purple and green text on a black background.
Date: 2006
Location Info:
Partner: UNT Music Library

Absence of Rapid Proton Decay and Origin of Low-Energy Particlesand Yukawa Couplings

Description: In string theory, massless particles often originate from a symmetry breaking of a large gauge symmetry G to its subgroup H. The absence of dimension-4 proton decay in supersymmetric theories suggests that ({bar D},L) are different from {bar H}({bar 5}) in their origins. In this article, we consider a possibility that they come from different irreducible components in g/h. Requiring that all the Yukawa coupling constants of quarks and leptons be generated from the super Yang-Mills interactions of G, we found in the context of Georgi-Glashow H = SU(5) unification that the minimal choice of G is E{sub 7} and E{sub 8} is the only alternative. This idea is systematically implemented in Heterotic String, M theory and F theory, confirming the absence of dimension 4 proton decay operators. Not only H = SU(5) but also G constrain operators of effective field theories, providing non-trivial information.
Date: January 1, 2006
Creator: Tatar, Radu & Watari, Taizan
Partner: UNT Libraries Government Documents Department

Advanced Combustion Systems for Next Generation Gas Turbines

Description: Next generation turbine power plants will require high efficiency gas turbines with higher pressure ratios and turbine inlet temperatures than currently available. These increases in gas turbine cycle conditions will tend to increase NOx emissions. As the desire for higher efficiency drives pressure ratios and turbine inlet temperatures ever higher, gas turbines equipped with both lean premixed combustors and selective catalytic reduction after treatment eventually will be unable to meet the new emission goals of sub-3 ppm NOx. New gas turbine combustors are needed with lower emissions than the current state-of-the-art lean premixed combustors. In this program an advanced combustion system for the next generation of gas turbines is being developed with the goal of reducing combustor NOx emissions by 50% below the state-of-the-art. Dry Low NOx (DLN) technology is the current leader in NOx emission technology, guaranteeing 9 ppm NOx emissions for heavy duty F class gas turbines. This development program is directed at exploring advanced concepts which hold promise for meeting the low emissions targets. The trapped vortex combustor is an advanced concept in combustor design. It has been studied widely for aircraft engine applications because it has demonstrated the ability to maintain a stable flame over a wide range of fuel flow rates. Additionally, it has shown significantly lower NOx emission than a typical aircraft engine combustor and with low CO at the same time. The rapid CO burnout and low NOx production of this combustor made it a strong candidate for investigation. Incremental improvements to the DLN technology have not brought the dramatic improvements that are targeted in this program. A revolutionary combustor design is being explored because it captures many of the critical features needed to significantly reduce emissions. Experimental measurements of the combustor performance at atmospheric conditions were completed in the first phase of ...
Date: January 1, 2006
Creator: Haynes, Joel; Janssen, Jonathan; Russell, Craig & Huffman, Marcus
Partner: UNT Libraries Government Documents Department

The Alchemist's Wedding Band

Description: The small scale sculpture, according to the artist, represents an alchemical allegory of marriage. It is symmetrical with two bulbous shapes emerging from a third round piece which is balanced on a crescent shape. The work is topped with a funnel shape holding some shapes made of lead.
Date: 2006
Creator: Lopez, Ana Maria
Partner: UNT College of Visual Arts + Design

ALEGRA-HEDP validation strategy.

Description: This report presents a initial validation strategy for specific SNL pulsed power program applications of the ALEGRA-HEDP radiation-magnetohydrodynamics computer code. The strategy is written to be (1) broadened and deepened with future evolution of particular specifications given in this version; (2) broadly applicable to computational capabilities other than ALEGRA-HEDP directed at the same pulsed power applications. The content and applicability of the document are highly constrained by the R&D thrust of the SNL pulsed power program. This means that the strategy has significant gaps, indicative of the flexibility required to respond to an ongoing experimental program that is heavily engaged in phenomena discovery.
Date: January 1, 2006
Creator: Garasi, Christopher Joseph; Mehlhorn, Thomas Alan & Trucano, Timothy Guy
Partner: UNT Libraries Government Documents Department

Algorithm and simulation development in support of response strategies for contamination events in air and water systems.

Description: Chemical/Biological/Radiological (CBR) contamination events pose a considerable threat to our nation's infrastructure, especially in large internal facilities, external flows, and water distribution systems. Because physical security can only be enforced to a limited degree, deployment of early warning systems is being considered. However to achieve reliable and efficient functionality, several complex questions must be answered: (1) where should sensors be placed, (2) how can sparse sensor information be efficiently used to determine the location of the original intrusion, (3) what are the model and data uncertainties, (4) how should these uncertainties be handled, and (5) how can our algorithms and forward simulations be sufficiently improved to achieve real time performance? This report presents the results of a three year algorithmic and application development to support the identification, mitigation, and risk assessment of CBR contamination events. The main thrust of this investigation was to develop (1) computationally efficient algorithms for strategically placing sensors, (2) identification process of contamination events by using sparse observations, (3) characterization of uncertainty through developing accurate demands forecasts and through investigating uncertain simulation model parameters, (4) risk assessment capabilities, and (5) reduced order modeling methods. The development effort was focused on water distribution systems, large internal facilities, and outdoor areas.
Date: January 1, 2006
Creator: Waanders, Bart Van Bloemen
Partner: UNT Libraries Government Documents Department

Analysis: Economic Impacts of Wind Applications in Rural Communities; June 18, 2004 -- January 31, 2005

Description: The purpose of this report is to compile completed studies on the economic impact of wind farms in rural communities and then to compare these studies. By summarizing the studies in an Excel spreadsheet, the raw data from a study is easily compared with the data from other studies. In this way, graphs can be made and conclusions drawn. Additionally, the creation of a database in which economic impact studies are summarized allows a greater understanding of the type of information gathered in an economic impact study, the type of information that is most helpful in using these studies to promote wind energy development in rural communities, and the limitations on collecting data for these studies.
Date: January 1, 2006
Creator: Pedden, M.
Partner: UNT Libraries Government Documents Department

Analysis of B → ωlν Decays With BaBar

Description: As part of the BaBar project at SLAC to study the properties of B mesons, we have carried out a study of the exclusive charmless semileptonic decay mode B → ωlν, which can be used to determine the magnitude of the Cabbibo- Kobayashi-Maskawa matrix element Vub. Using simulated event samples, this study focuses on determining criteria on variables for selection of B → ωlν signal and suppression of background from other types of BB events and continuum processes. In addition, we determine optimal cuts on variables to ensure a good neutrino reconstruction. With these selection cuts, we were able to achieve a signal-to-background ratio of 0.68 and a signal efficiency of the order of 1%. Applying these cuts to a sample of 83 million BB events recorded by BaBar in e+e– collisions at the (4S) resonance, we obtain a yield of 115 ± 19 B → ωlν decays.
Date: January 1, 2006
Creator: Chu, Yiwen; Littlejohn, Bryce & Binfelder, J.
Partner: UNT Libraries Government Documents Department