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Improved Electrodes and Electrolytes for Dye-Based Solar Cells
The most important factor in limiting the stability of dye-sensitized solar cells is the use of volatile liquid solvents in the electrolytes, which causes leakage during extended operation especially at elevated temperatures. This, together with the necessary complex sealing of the cells, seriously hampers the industrial-scale manufacturing and commercialization feasibilities of DSSCs. The objective of this program was to bring about a significant improvement in the performance and longevity of dye-based solar cells leading to commercialization. This had been studied in two ways first through development of low volatility solid, gel or liquid electrolytes, second through design and fabrication of TiO2 sculptured thin film electrodes.
Date:
October 26, 2011
Creator:
Allcock, Harry R.; Mallouk, Thomas E. & Horn, Mark W.
Object Type:
Report
System:
The UNT Digital Library
Synchrotron Studies of Quantum Emergence in Non-Low Dimensional Materials Final Report
This document is the final report of research performed under U.S. DOE Award Number DE-FG02-07ER46379, entitled Synchrotron Studies of Quantum Emergence in Non-Low Dimensional Materials. It covers the full period of the award, from June 1, 2007 through May 31, 2011.
Date:
August 26, 2011
Creator:
Allen, James W.
Object Type:
Report
System:
The UNT Digital Library
Doctoral Recital: 2011-04-26 - Matthew Anderson, trumpet
Recital presented at First United Methodist Church in Denton, Texas in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
April 26, 2011
Creator:
Anderson, Matthew
Object Type:
Sound
System:
The UNT Digital Library
Guinea: Background and Relations with the United States
This report gives an overview of Guinea and discusses the background information and relations with the United States
Date:
July 26, 2011
Creator:
Arieff, Alexis
Object Type:
Report
System:
The UNT Digital Library
Molecular Assemblies, Genes and Genomics Integrated Efficiently (MAGGIE)
Final report on MAGGIE. We set ambitious goals to model the functions of individual organisms and their community from molecular to systems scale. These scientific goals are driving the development of sophisticated algorithms to analyze large amounts of experimental measurements made using high throughput technologies to explain and predict how the environment influences biological function at multiple scales and how the microbial systems in turn modify the environment. By experimentally evaluating predictions made using these models we will test the degree to which our quantitative multiscale understanding wilt help to rationally steer individual microbes and their communities towards specific tasks. Towards this end we have made substantial progress towards understanding evolution of gene families, transcriptional structures, detailed structures of keystone molecular assemblies (proteins and complexes), protein interactions, biological networks, microbial interactions, and community structure. Using comparative analysis we have tracked the evolutionary history of gene functions to understand how novel functions evolve. One level up, we have used proteomics data, high-resolution genome tiling microarrays, and 5' RNA sequencing to revise genome annotations, discover new genes including ncRNAs, and map dynamically changing operon structures of five model organisms: For Desulfovibrio vulgaris Hildenborough, Pyrococcus furiosis, Sulfolobus solfataricus, Methanococcus maripaludis and Haiobacterium salinarum …
Date:
May 26, 2011
Creator:
Baliga, Nitin S.
Object Type:
Report
System:
The UNT Digital Library
Simulating the Rayleigh-Taylor instability with the Ising model
None
Date:
August 26, 2011
Creator:
Ball, J R & Elliott, J B
Object Type:
Report
System:
The UNT Digital Library
The Rambler (Fort Worth, Tex.), Vol. 94, No. 2, Ed. 1 Wednesday, January 26, 2011
Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.
Date:
January 26, 2011
Creator:
Banks, Shauna
Object Type:
Newspaper
System:
The Portal to Texas History
The Rambler (Fort Worth, Tex.), Vol. 94, No. 21, Ed. 1 Wednesday, October 26, 2011
Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.
Date:
October 26, 2011
Creator:
Banks, Shauna
Object Type:
Newspaper
System:
The Portal to Texas History
High Statistics Analysis using Anisotropic Clover Lattices: (IV) Volume Dependence of Light Hadron Masses
None
Date:
April 26, 2011
Creator:
Beane, S.; Chang, E.; Detmold, W.; Lin, H. W.; Luu, T.; Orginos, K. et al.
Object Type:
Article
System:
The UNT Digital Library
High Speed Measurements using Fiber-optic Bragg Grating Sensors
Fiber grating sensors may be used to monitor high-speed events that include catastrophic failure of structures, ultrasonic testing and detonations. This paper provides insights into the utility of fiber grating sensors to measure structural changes under extreme conditions. An emphasis is placed on situations where there is a structural discontinuity. Embedded chirped fiber Bragg grating (CFBG) sensors can track the very high-speed progress of detonation waves (6-9 km/sec) inside energetic materials. This paper discusses diagnostic instrumentation and analysis techniques used to measure these high-speed events.
Date:
March 26, 2011
Creator:
Benterou, J J; May, C A; Udd, E; Mihailov, S J & Lu, P
Object Type:
Article
System:
The UNT Digital Library
Options for Production Staging for a Low Energy Neutrino Factory
A low energy neutrino factory (LENF) is defined, for the purpose of this report, to accelerate a muon beam to a total energy in the range of 10-14 GeV, and store it in a decay ring directing a resulting neutrino beam to a detector 2200-2300 km distant. The machine should be ultimately capable of producing 10{sup 21} decays toward that detector per year of 10{sup 7} s. We consider such a neutrino factory to be the accelerator defined in the Interim Design Report (IDR) of the International Design Study for the Neutrino Factory (IDS-NF), modified to remove the final stage of acceleration, possibly modifying the remaining acceleration stages to adjust the final energy, and replacing the decay ring with one designed for the lower energy and shorter baseline. We discuss modifications to that design which would reduce the cost of the machine at the price of a reduction in neutrino production, down to as low as 10{sup 20} decays per year. These modifications will not preclude eventually upgrading the machine to the full production of 10{sup 21} decays per year. The eventual cost of a machine which achieves the full production through a series of lower-production stages should not exceed …
Date:
October 26, 2011
Creator:
Berg, J. S.
Object Type:
Report
System:
The UNT Digital Library
Applying graph partitioning methods in measurement-based dynamic load balancing
None
Date:
September 26, 2011
Creator:
Bhatele, A; Fourestier, S; Menon, H; Kale, L V & Pellegrini, F
Object Type:
Report
System:
The UNT Digital Library
Avoiding hot-spots on two-level direct networks
None
Date:
July 26, 2011
Creator:
Bhatele, A; Jain, N; Gropp, W D & Kale, L V
Object Type:
Article
System:
The UNT Digital Library
Doctoral Recital: 2011-03-26 - Marty Bishop, trumpet
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
March 26, 2011
Creator:
Bishop, Marty
Object Type:
Sound
System:
The UNT Digital Library
The United Nations Human Rights Council: Issues for Congress
This report provides historical background of the the United Nations (UN) Human Rights Council, including the role of the previous Commission. It discusses the Council's current mandate and structures, as well as U.S. policy and congressional actions. Finally, it highlights possible policy issues for the 112th Congress, including the overall effectiveness of the Council in addressing human rights, implications for U.S. membership, and U.S. financial contributions to the Council.
Date:
January 26, 2011
Creator:
Blanchfield, Luisa
Object Type:
Report
System:
The UNT Digital Library
Understanding Trends in Wind Turbine Prices Over the Past Decade
Taking a bottom-up approach, this report examines seven primary drivers of wind turbine prices in the United States, with the goal of estimating the degree to which each contributed to the doubling in turbine prices from 2002 through 2008, as well as the subsequent decline in prices through 2010 (our analysis does not extend into 2011 because several of these drivers are best gauged on a full-year basis due to seasonality issues). The first four of these drivers can be considered, at least to some degree, endogenous influences – i.e., those that are largely within the control of the wind industry – and include changes in: 1) Labor costs, which have historically risen during times of tight turbine supply; 2) Warranty provisions, which reflect technology performance and reliability, and are most often capitalized in turbine prices; 3) Turbine manufacturer profitability, which can impact turbine prices independently of costs; and 4) Turbine design, which for the purpose of this analysis is principally manifested through increased turbine size. The other three drivers analyzed in this study can be considered exogenous influences, in that they can impact wind turbine costs but fall mostly outside of the direct control of the wind industry. These …
Date:
October 26, 2011
Creator:
Bolinger, Mark & Wiser, Ryan
Object Type:
Report
System:
The UNT Digital Library
Grid-Competitive Residential and Commercial Fully Automated PV Systems Technology: Final technical Report, August 2011
Under DOE's Technology Pathway Partnership program, SunPower Corporation developed turn-key, high-efficiency residential and commercial systems that are cost effective. Key program objectives include a reduction in LCOE values to 9-12 cents/kWh and 13-18 cents/kWh respectively for the commercial and residential markets. Target LCOE values for the commercial ground, commercial roof, and residential markets are 10, 11, and 13 cents/kWh. For this effort, SunPower collaborated with a variety of suppliers and partners to complete the tasks below. Subcontractors included: Solaicx, SiGen, Ribbon Technology, Dow Corning, Xantrex, Tigo Energy, and Solar Bridge. SunPower's TPP addressed nearly the complete PV value chain: from ingot growth through system deployment. Throughout the award period of performance, SunPower has made progress toward achieving these reduced costs through the development of 20%+ efficient modules, increased cell efficiency through the understanding of loss mechanisms and improved manufacturing technologies, novel module development, automated design tools and techniques, and reduced system development and installation time. Based on an LCOE assessment using NREL's Solar Advisor Model, SunPower achieved the 2010 target range, as well as progress toward 2015 targets.
Date:
August 26, 2011
Creator:
Brown, K. E.; Cousins, P.; Culligan, M.; Botkin, J.; DeGraaff, D.; Bunea, G. et al.
Object Type:
Report
System:
The UNT Digital Library
House and Senate Chaplains: An Overview
This report provides an overview of the House and Senate chaplains.
Date:
May 26, 2011
Creator:
Brudnick, Ida A.
Object Type:
Report
System:
The UNT Digital Library
Effect of Energy Efficiency Standards on Natural Gas Prices
A primary justification for the establishment of energy efficiency standards for home appliances is the existence of information deficiencies and externalities in the market for appliances. For example, when a long-term homeowner purchases a new gas-fired water heater, she will maximize the value of her purchase by comparing the life-cycle cost of ownership of available units, including both total installed cost - purchase price plus installation costs - and operating cost in the calculus. Choice of the appliance with the lowest life-cycle costs leads to the most economically efficient balance between capital cost and fuel cost. However, if the purchaser's expected period of ownership is shorter than the useful life of the appliance, or the purchaser does not pay for the fuel used by the appliance, as is often the case with rental property, fuel cost will be external to her costs, biasing her decision toward spending less on fuel efficiency and resulting in the purchase of an appliance with greater than optimal fuel usage. By imposing an efficiency standard on appliances, less efficient appliances are made unavailable, precluding less efficient purchases and reducing fuel usage. The reduction in fuel demanded by residential users affects the total demand for such …
Date:
July 26, 2011
Creator:
Carnall, Michael; Dale, Larry & Lekov, Alex
Object Type:
Report
System:
The UNT Digital Library
Agua Caliente Solar Feasibility and Pre-Development Study Final Report
Evaluation of facility- and commercial-scale solar energy projects on the Agua Caliente Band of Cahuilla Indians Reservation in Palm Springs, CA. The Agua Caliente Band of Cahuilla Indians (ACBCI) conducted a feasibility and pre-development study of potential solar projects on its lands in southern California. As described below, this study as a logical and necessary next step for ACBCI. Support for solar project development in California, provided through the statewide California Solar Initiative (CSI), its Renewable Portfolio Standard and Feed-in Tariff Program, and recently announced Reverse Auction Mechanism, provide unprecedented support and incentives that can be utilized by customers of California's investor-owned utilities. Department of Energy (DOE) Tribal Energy Program funding allowed ACBCI to complete its next logical step to implement its Strategic Energy Plan, consistent with its energy and sustainability goals.
Date:
April 26, 2011
Creator:
Carolyn T. Stewart, Managing Partner & Partners, Red Mountain Energy
Object Type:
Report
System:
The UNT Digital Library
Monitoring Spent or Reprocessed Nuclear Fuel Using Fast Neutrons
None
Date:
May 26, 2011
Creator:
Chapline, G F; Nakae, L F; Snyderman, N; Verbeke, J M & Wurtz, R
Object Type:
Article
System:
The UNT Digital Library
Automatic Thread-Level Parallelization in the Chombo AMR Library
The increasing on-chip parallelism has some substantial implications for HPC applications. Currently, hybrid programming models (typically MPI+OpenMP) are employed for mapping software to the hardware in order to leverage the hardware?s architectural features. In this paper, we present an approach that automatically introduces thread level parallelism into Chombo, a parallel adaptive mesh refinement framework for finite difference type PDE solvers. In Chombo, core algorithms are specified in the ChomboFortran, a macro language extension to F77 that is part of the Chombo framework. This domain-specific language forms an already used target language for an automatic migration of the large number of existing algorithms into a hybrid MPI+OpenMP implementation. It also provides access to the auto-tuning methodology that enables tuning certain aspects of an algorithm to hardware characteristics. Performance measurements are presented for a few of the most relevant kernels with respect to a specific application benchmark using this technique as well as benchmark results for the entire application. The kernel benchmarks show that, using auto-tuning, up to a factor of 11 in performance was gained with 4 threads with respect to the serial reference implementation.
Date:
May 26, 2011
Creator:
Christen, Matthias; Keen, Noel; Ligocki, Terry; Oliker, Leonid; Shalf, John; Van Straalen, Brian et al.
Object Type:
Report
System:
The UNT Digital Library
DC Gun Laws and Proposed Amendments
In the 112th Congress, Representative Mike Ross introduced H.R. 645, "To restore Second Amendment rights in the District of Columbia." This measure is identical to H.R. 5162 from the previous Congress. This report provides an analysis of the District's firearms laws and congressional proposals.
Date:
April 26, 2011
Creator:
Chu, Vivian S.
Object Type:
Report
System:
The UNT Digital Library
$D^0 \bar{D}^0$ Mixing at BaBar
This article reviews the recent measurement of D{sup 0}-{bar D}{sup 0} mixing with the D{sup 0} {yields} K{pi} decay channel from the BABAR experiment at the PEP-II B-Factory. Averages from the Heavy Flavor Averaging Group between this result and a previous result from BELLE are also presented.
Date:
October 26, 2011
Creator:
Coleman, Jonathon
Object Type:
Article
System:
The UNT Digital Library