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Results:
1,465 - 1,474 of
1,474
The U.S. Postal Service's Financial Condition: Overview and Issues for Congress
This report provides an overview of the U.S. Postal Service's (USPS's) financial condition, recent legislation to alleviate the USPS's financial challenges, and possible issues for the 111th Congress. Since 1971, the USPS has been a self-supporting government agency that covers its operating costs with revenues generated through the sales of postage and related products and services.
Date:
July 1, 2010
Creator:
Kosar, Kevin R.
Object Type:
Report
System:
The UNT Digital Library
Using GPU Programming for Inverse Spectroscopy
The Idaho National Laboratory (INL) has developed a detector that relies heavily on computationally expensive inverse spectroscopy algorithms to determine probabilistic three dimensional mappings of the source and its intensity. This inverse spectroscopy algorithm applies to material accountability due to the potential to determine where nuclear sources are present as a function of time and space. And yet because the novel algorithm can become prohibitively expensive on a standard desktop PC, the INL has incorporated new hardware from the commercial graphics community. General programming for graphics processing units (GPUs) is not a new concept. However, the application of GPUs to evidence theory-based inverse spectroscopy is both novel and particularly apropos. Improvements while using a (slightly upgraded) standard PC are approximately three orders of magnitude, making a ten hour computation in less than four seconds. This significantly changes the concept of prohibitively expensive calculations and makes application to materials accountability possible in near real time. Indeed, the sensor collection time is now expected to dominate the time required to determine the source and its intensity, instead of the inverse spectroscopy method.
Date:
July 1, 2010
Creator:
Gerts, David; Fredette, N. & Wimberly, H.
Object Type:
Article
System:
The UNT Digital Library
Utilizing Load Response for Wind and Solar Integration and Power System Reliability
Responsive load is still the most underutilized reliability resource in North America. This paper examines the characteristics of concern to the power system, the renewables, and to the loads.
Date:
July 1, 2010
Creator:
Milligan, M. & Kirby, B.
Object Type:
Article
System:
The UNT Digital Library
Variables governing emotion and decision-making: human objectivity underlying its subjective perception
This article accompanies a poster presentation on the variables governing emotion and decision-making.
Date:
July 2010
Creator:
Tam, Nicoladie D.
Object Type:
Article
System:
The UNT Digital Library
Warfighter Support: Actions Needed to Improve the Joint Improvised Exposive Device Defeat Organization's System of Internal Control
A letter report issued by the Government Accountability Office with an abstract that begins "In 2006, the Department of Defense (DOD) established the Joint Improvised Explosive Device Defeat Organization (JIEDDO) to lead, advocate, and coordinate all DOD actions to defeat improvised explosive devices (IEDs). Since 2007, GAO has reported on several issues related to JIEDDO's management and transparency of operations. In response to the 2008 National Defense Authorization Act conference report, mandating that GAO review JIEDDO's efforts, this report addresses the extent to which JIEDDO has (1) measured the effectiveness of its efforts and investments, (2) adhered to its review and approval process for developing counter-IED initiatives, and (3) taken action to address overall internal control weaknesses previously reported by GAO. To address these objectives, GAO analyzed relevant documents and discussed with relevant officials their guidance, oversight, and internal control processes to carry out JIEDDO operations. GAO also conducted case studies of 56 of 497 initiatives JIEDDO's initiative management system."
Date:
July 1, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
What Can China Do? China's Best Alternative Outcome for Energy Efficiency and CO2 Emissions
After rapid growth in economic development and energy demand over the last three decades, China has undertaken energy efficiency improvement efforts to reduce its energy intensity under the 11th Five Year Plan (FYP). Since becoming the world's largest annual CO{sub 2} emitter in 2007, China has set reduction targets for energy and carbon intensities and committed to meeting 15% of its total 2020 energy demand with non-fossil fuel. Despite having achieved important savings in 11th FYP efficiency programs, rising per capita income and the continued economic importance of trade will drive demand for transport activity and fuel use. At the same time, an increasingly 'electrified' economy will drive rapid power demand growth. Greater analysis is therefore needed to understand the underlying drivers, possible trajectories and mitigation potential in the growing industrial, transport and power sectors. This study uses scenario analysis to understand the likely trajectory of China's energy and carbon emissions to 2030 in light of the current and planned portfolio of programs, policies and technology development and ongoing urbanization and demographic trends. It evaluates the potential impacts of alternative transportation and power sector development using two key scenarios, Continued Improvement Scenario (CIS) and Accelerated Improvement Scenario (AIS). CIS represents …
Date:
July 1, 2010
Creator:
G. Fridley, David; Zheng, Nina & T. Aden, Nathaniel
Object Type:
Report
System:
The UNT Digital Library
WIMP search with the final year of CDMS II data
The Cryogenic Dark Matter Search (CDMS) has pioneered the use of ionization and athermal phonon signals to discriminate between candidate (nuclear recoil) and background (electron recoil) events in Ge crystals cooled to {approx}50 mK. The yield and timing information allows for the maximization of discovery potential by adjusting the expected background in the signal region to less than one event. A blind analysis on 612 kg-days of raw exposure from the CDMS II experiment was performed. Two events with an expected background of {approx}0.9 events were observed. No statistically significant evidence for WIMP interactions is reported. Combining this data with previously analyzed CDMS II data sets an upper limit on the WIMP-nucleon spin-independent cross-section of 3.8 x 10{sup -44} cm{sup 2} for a WIMP of mass 70 GeV/c{sup 2}.
Date:
July 1, 2010
Creator:
Hsu, L.
Object Type:
Article
System:
The UNT Digital Library
Wind Turbine Safety and Function Test Report for the Mariah Windspire Wind Turbine
This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers to wind energy expansion by providing independent testing results for small wind turbines (SWT). In total, five turbines were tested at the National Wind Technology Center (NWTC) as a part of this project. Safety and function testing is one of up to five tests performed on the turbines, including power performance, duration, noise, and power-quality tests. NWTC testing results provide manufacturers with reports that may be used to meet part of small wind turbine certification requirements. The test equipment includes a Mariah Windspire wind turbine mounted on a monopole tower. L&E Machine manufactured the turbine in the United States. The inverter was manufactured separately by Technology Driven Products in the United States. The system was installed by the NWTC site operations group with guidance and assistance from Mariah Power.
Date:
July 1, 2010
Creator:
Huskey, A.; Bowen, A. & Jager, D.
Object Type:
Report
System:
The UNT Digital Library
Woody energy crops in the southeastern United States: Two centuries of practitioner experience.
Forest industry experts were consulted on the potential for hardwood tree species to serve as feedstock for bioenergy in the southeastern United States. Hardwoods are of interest for bioenergy because of desirable physical qualities, genetic research advances, and growth potential. Yet little data is available regarding potential productivity and costs. This paper describes required operations and provides a realistic estimate of the costs of producing bioenergy feedstock based on commercial experiences. Forestry practitioners reported that high productivity rates in southeastern hardwood plantations are confined to narrow site conditions or require costly inputs. Eastern cottonwood and American sycamore grow quickly on rich bottomlands, but are also prone to pests and disease. Sweetgum is frost hardy, has few pest or disease problems, and grows across a broad range of sites, yet growth rates are relatively low. Eucalypts require fewer inputs than do other species and offer high potential productivity but are limited by frost to the lower Coastal Plain and Florida. Further research is required to study naturally regenerated hardwood biomass resources. Loblolly pine has robust site requirements, growth rates rivaling hardwoods, and lower costs of production. More time and investment in silviculture, selection, and breeding will be needed to develop hardwoods …
Date:
July 1, 2010
Creator:
Kline, Keith, L. & Coleman, Mark, D.
Object Type:
Article
System:
The UNT Digital Library
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 108, No. 14, Ed. 1 Thursday, July 1, 2010
Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 1, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History