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[24-Hour Film Feast with Vondie Curtis-Hall tape #1]
Video footage from The Black Academy of Arts and Letters recorded during TBAALs 2012 24-Hour Filmfeast featuring actor and director Vondie Curtis-Hall on April 28th. The footage features a live Q&A discussion with Hall on his career and perspective on the industry.
Date:
April 28, 2012
Creator:
Curtis-Hall, Vondie
Object Type:
Video
System:
The UNT Digital Library
[24-Hour Film Feast with Vondie Curtis-Hall tape #2]
Video footage from The Black Academy of Arts and Letters recorded during TBAALs 2012 24-Hour Filmfeast featuring actor and director Vondie Curtis-Hall on April 28th. The footage features a live Q&A discussion with Hall on his career and perspective on the industry. Curtis King sits to the side and moderates.
Date:
April 28, 2012
Creator:
Curtis-Hall, Vondie
Object Type:
Video
System:
The UNT Digital Library
The 60-month all-sky BAT Survey of AGN and the Anisotropy of Nearby AGN
Surveys above 10 keV represent one of the the best resources to provide an unbiased census of the population of Active Galactic Nuclei (AGN). We present the results of 60 months of observation of the hard X-ray sky with Swift/BAT. In this timeframe, BAT detected (in the 15-55 keV band) 720 sources in an all-sky survey of which 428 are associated with AGN, most of which are nearby. Our sample has negligible incompleteness and statistics a factor of {approx}2 larger over similarly complete sets of AGN. Our sample contains (at least) 15 bona-fide Compton-thick AGN and 3 likely candidates. Compton-thick AGN represent a {approx}5% of AGN samples detected above 15 keV. We use the BAT dataset to refine the determination of the LogN-LogS of AGN which is extremely important, now that NuSTAR prepares for launch, towards assessing the AGN contribution to the cosmic X-ray background. We show that the LogN-LogS of AGN selected above 10 keV is now established to a {approx}10% precision. We derive the luminosity function of Compton-thick AGN and measure a space density of 7.9{sub -2.9}{sup +4.1} x 10{sup -5} Mpc{sup -3} for objects with a de-absorbed luminosity larger than 2 x 10{sup 42} erg s{sup -1}. …
Date:
April 2, 2012
Creator:
Ajello, M.; /KIPAC, Menlo Park; Alexander, D.M.; U., /Durham; Greiner, J.; /Garching, Max Planck Inst., MPE et al.
Object Type:
Article
System:
The UNT Digital Library
401(k) Plans: Increased Educational Outreach and Broader Oversight May Help Reduce Plan Fees
A letter report issued by the Government Accountability Office with an abstract that begins "Plan sponsors and participants paid a range of fees for services, though smaller plans typically paid higher fees as a percentage of plan assets. For example, the average amount sponsors of small plans reported paying for recordkeeping and administrative services was 1.33 percent of assets annually, compared with 0.15 percent paid by sponsors of large plans. Larger plans were more likely to pass recordkeeping fees along to participants, but when fees were passed along to participants in small plans, those in large plans paid lower fees than those in small plans. Participants also paid for investment and plan consulting feesthrough fees deducted from their plan assetsin more instances than sponsors."
Date:
April 24, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
11th National Conference on Science, Policy, and the Environment: Our Changing Oceans
On January 19-21, 2011, The National Council for Science and the Environment (NCSE) successfully convened its 11th National Conference on Science, Policy and the Environment: Our Changing Oceans in Washington, DC at the Ronald Reagan Building and International Trade Center. Over 1,247 participants attended the conference, representing federal, state and local governments, university and colleges across the US, civil society organizations, the business community, and international entities. In addition, the conference was webcast to an audience across several states. The conference provided a forum to examine the profound changes our ocean will undergo over the next 25-50 years and share various perspectives on the new research, tools, and policy initiatives to protect and sustain our ocean. Conference highlights and recommendations are available to the public on NCSE's conference website, www.OurChangingOceans.org.
Date:
April 17, 2012
Creator:
Saundry, Peter
Object Type:
Article
System:
The UNT Digital Library
N*(1535) electroproduction at high Q2
A covariant spectator quark model is applied to study the {gamma}N {yields} N*(1535) reaction in the large Q{sup 2} region. Starting from the relation between the nucleon and N*(1535) systems, the N*(1535) valence quark wave function is determined without the addition of any parameters. The model is then used to calculate the {gamma}N {yields} N*(1535) transition form factors. A very interesting, useful relation between the A{sub 1/2} and S{sub 1/2} helicity amplitudes for Q{sup 2} > GeV{sup 2}, is also derived.
Date:
April 1, 2012
Creator:
G. Ramalho, M.T. Pena, K. Tsushima
Object Type:
Article
System:
The UNT Digital Library
2010 Cost of Wind Energy Review
This document provides a detailed description of NREL's levelized cost of wind energy equation, assumptions and results in 2010, including historical cost trends and future projections for land-based and offshore utility-scale wind.
Date:
April 1, 2012
Creator:
Tegen, S.; Hand, M.; Maples, B.; Lantz, E.; Schwabe, P. & Smith, A.
Object Type:
Report
System:
The UNT Digital Library
2011 Annual Health Physics Report for the HEU transparency Program
During the 2008 calendar year, Lawrence Livermore National Laboratory (LLNL) provided health physics support for the Highly Enriched Uranium (HEU) Transparency Program for external and internal radiation protection. They also provided technical expertise related to BDMS radioactive sources and Russian radiation safety regulatory compliance. For the calendar year 2008, there were 158 person-trips that required dose monitoring of the U.S. monitors. Of the 158 person-trips, 148 person-trips were SMVs and 10 person-trips were Transparency Monitoring Office (TMO) trips. There were 6 monitoring visits by TMO monitors to facilities other than UEIE and 8 to UEIE itself. There were three monitoring visits (source changes) that were back-to-back with a total of 24 monitors. LLNL's Hazard Control Department laboratories provided the dosimetry services for the HEU Transparency monitors. In 2008, the HEU Transparency activities in Russia were conducted in a radiologically safe manner for the HEU Transparency monitors in accordance with the expectations of the HEU Transparency staff, NNSA and DOE. The HEU Transparency now has thirteen years of successful experience in developing and providing health and safety support in meeting its technical objectives.
Date:
April 30, 2012
Creator:
Radev, R.
Object Type:
Report
System:
The UNT Digital Library
2011 Computation Directorate Annual Report
From its founding in 1952 until today, Lawrence Livermore National Laboratory (LLNL) has made significant strategic investments to develop high performance computing (HPC) and its application to national security and basic science. Now, 60 years later, the Computation Directorate and its myriad resources and capabilities have become a key enabler for LLNL programs and an integral part of the effort to support our nation's nuclear deterrent and, more broadly, national security. In addition, the technological innovation HPC makes possible is seen as vital to the nation's economic vitality. LLNL, along with other national laboratories, is working to make supercomputing capabilities and expertise available to industry to boost the nation's global competitiveness. LLNL is on the brink of an exciting milestone with the 2012 deployment of Sequoia, the National Nuclear Security Administration's (NNSA's) 20-petaFLOP/s resource that will apply uncertainty quantification to weapons science. Sequoia will bring LLNL's total computing power to more than 23 petaFLOP/s-all brought to bear on basic science and national security needs. The computing systems at LLNL provide game-changing capabilities. Sequoia and other next-generation platforms will enable predictive simulation in the coming decade and leverage industry trends, such as massively parallel and multicore processors, to run petascale applications. …
Date:
April 11, 2012
Creator:
Crawford, D. L.
Object Type:
Report
System:
The UNT Digital Library
2012 Edition of the Drinking Water Standards and Health Advisories
This document by the EPA's Office of Water presents data on the concentrations of drinking water contaminants.
Date:
April 2012
Creator:
United States. Environmental Protection Agency. Office of Water.
Object Type:
Text
System:
The UNT Digital Library
2012 Presidential Primaries
This poster introduces the faculty lecture series UNT Speaks Out on the 2012 Presidential Primaries. This series features Dr. Tony Carey, assistant professor in the Department of Political Science, Dr. Matthew Eshbaugh-Soha, associate professor in the Department of Political Science, and Dr. Brian Lain, associate professor in the Department of Communications Studies and director of UNT's Debate Program.
Date:
April 2012
Creator:
Mondragon-Becker, Antonio
Object Type:
Poster
System:
The UNT Digital Library
The 2012 Republican Primaries
This presentation is part of the faculty lecture series UNT Speaks Out on the 2012 Presidential Primaries. In this presentation, the author gives the audience an overview of the structure of the primaries, and provides a recap of past primaries. The author also speaks about the money, momentum, and media attention in the primaries.
Date:
April 24, 2012
Creator:
Eshbaugh-Soha, Matthew, 1972-
Object Type:
Presentation
System:
The UNT Digital Library
2012 SINGLE MOLECULE APPROACHES TO BIOLOGY GORDON RESEARCH CONFERENCE (JULY 15-20, 2012 - MOUNT SNOW RESORT, WEST DOVER VT)
Single molecule techniques are rapidly occupying a central role in biological research at all levels. This transition was made possible by the availability and dissemination of robust techniques that use fluorescence and force probes to track the conformation of molecules one at a time, in vitro as well as in live cells. Single-molecule approaches have changed the way many biological problems are studied. These novel techniques provide previously unobtainable data on fundamental biochemical processes that are essential for all forms of life. The ability of single-molecule approaches to avoid ensemble averaging and to capture transient intermediates and heterogeneous behavior renders them particularly powerful in elucidating mechanisms of the molecular systems that underpin the functioning of living cells. Hence, our conference seeks to disseminate the implementation and use of single molecule techniques in the pursuit of new biological knowledge. Topics covered include: Molecular Motors on the Move; Origin And Fate Of Proteins; Physical Principles Of Life; Molecules and Super-resolution Microscopy; Nanoswitches In Action; Active Motion Or Random Diffusion?; Building Blocks Of Living Cells; From Molecular Mechanics To Physiology; Tug-of-war: Force Spectroscopy Of Single Proteins.
Date:
April 20, 2012
Creator:
Fernandez, Julio
Object Type:
Article
System:
The UNT Digital Library
2012 Update of the Combination of CDF and D0 Results for the Mass of the W Boson
We summarize and combine the results on the direct measurements of the mass of the W boson in data collected by the Tevatron experiments CDF and D0 at Fermilab. Earlier results from CDF Run-0 (1988-1989), D0 and CDF Run-I (1992-1995) and D0 results from 1 fb{sup -1} (2002-2006) of Run-II data are now combined with two new, high statistics Run-II measurements: a CDF measurement in both electron and muon channels using 2.2 fb{sup -1} of integrated luminosity collected between 2002 and 2007, and a D0 measurement in the electron channel using 4.3 fb{sup -1} collected between 2006 and 2009. As in previous combinations, the results are corrected for inconsistencies in parton distribution functions and assumptions about electroweak parameters used in the different analyses. The resulting Tevatron average for the mass of the W boson is M{sub W} = 80,387 {+-} 16 MeV and a new world average including data from LEP II is M{sub W} = 80,385 {+-} 15 MeV.
Date:
April 1, 2012
Creator:
Tevatron Electroweak Working Group,
Object Type:
Report
System:
The UNT Digital Library
230Th-234U Age-Dating Uranium by Mass Spectrometry
This is the standard operating procedure used by the Isotope Ratio Mass Spectrometry Group of the Chemical Sciences Division at LLNL for the preparation of a sample of uranium oxide or uranium metal for {sup 230}Th-{sup 234}U age-dating. The method described here includes the dissolution of a sample of uranium oxide or uranium metal, preparation of a secondary dilution, spiking of separate aliquots for uranium and thorium isotope dilution measurements, and purification of uranium and thorium aliquots for mass spectrometry. This SOP may be applied to uranium samples of unknown purity as in a nuclear forensic investigation, and also to well-characterized samples such as, for example, U{sub 3}O{sub 8} and U-metal certified reference materials. The sample of uranium is transferred to a quartz or PFA vial, concentrated nitric acid is added and the sample is heated on a hotplate at approximately 100 C for several hours until it dissolves. The sample solution is diluted with water to make the solution approximately 4 M HNO{sub 3} and hydrofluoric acid is added to make it 0.05 M HF. A secondary dilution of the primary uranium solution is prepared. Separate aliquots for uranium and thorium isotope dilution measurements are taken and spiked with …
Date:
April 18, 2012
Creator:
Williams, R. W. & Gaffney, A. M.
Object Type:
Report
System:
The UNT Digital Library
The 4Ms Chandra Deep Field-South Number Counts Apportioned By Source Class: Pervasive Active Galactic Nuclei and the Ascent of Normal Galaxies
This article presents cumulative and differential number-count measurements for the recently completed 4 Ms Chandra Deep Field-South survey.
Date:
April 9, 2012
Creator:
Lehmer, Bret; Xue, Yongquan; Brandt, William Nielsen; Alexander, David M.; Bauer, Franz E.; Brusa, Marcella et al.
Object Type:
Article
System:
The UNT Digital Library
[Aaron Einhouse on stage at John A. Lomax Texas Music Gathering]
Photograph of Aaron Einhouse on stage at the John A. Lomax Texas Music Gathering and Chuckwagon Cook-off. Einhouse can be seen sitting on a stool in the center of the photograph, facing to the left of the camera and looking down. He is holding a guitar. Other individuals can be seen on stage behind him.
Date:
April 14, 2012
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Aaron Einhouse performs at John A. Lomax Texas Music Gathering]
Photograph of Steven Fromholz (left) and Aaron Einhouse (right) on stage at the John A. Lomax Texas Music Gathering and Chuckwagon Cook-off. The men are sitting side by side, facing to the left of the camera and holding guitars. Fromholz is looking at Einhouse, who is singing and playing guitar.
Date:
April 14, 2012
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
AB INITIO STUDY OF ADVANCED METALLIC NUCLEAR FUELS FOR FAST BREEDER REACTORS
Density-functional formalism is applied to study the ground state properties of {gamma}-U-Zr and {gamma}-U-Mo solid solutions. Calculated heats of formation are compared with CALPHAD assessments. We discuss how the heat of formation in both alloys correlates with the charge transfer between the alloy components. The decomposition curves for {gamma}-based U-Zr and U-Mo solid solutions are derived from Ising-type Monte Carlo simulations. We explore the idea of stabilization of the {delta}-UZr{sub 2} compound against the {alpha}-Zr (hcp) structure due to increase of Zr d-band occupancy by the addition of U to Zr. We discuss how the specific behavior of the electronic density of states in the vicinity of the Fermi level promotes the stabilization of the U{sub 2}Mo compound. The mechanism of possible Am redistribution in the U-Zr and U-Mo fuels is also discussed.
Date:
April 23, 2012
Creator:
Landa, A; Soderlind, P; Grabowski, B; Turchi, P A; Ruban, A V & Vitos, L
Object Type:
Article
System:
The UNT Digital Library
Absorber Alignment Measurement Tool for Solar Parabolic Trough Collectors: Preprint
As we pursue efforts to lower the capital and installation costs of parabolic trough solar collectors, it is essential to maintain high optical performance. While there are many optical tools available to measure the reflector slope errors of parabolic trough solar collectors, there are few tools to measure the absorber alignment. A new method is presented here to measure the absorber alignment in two dimensions to within 0.5 cm. The absorber alignment is measured using a digital camera and four photogrammetric targets. Physical contact with the receiver absorber or glass is not necessary. The alignment of the absorber is measured along its full length so that sagging of the absorber can be quantified with this technique. The resulting absorber alignment measurement provides critical information required to accurately determine the intercept factor of a collector.
Date:
April 1, 2012
Creator:
Stynes, J. K. & Ihas, B.
Object Type:
Article
System:
The UNT Digital Library
THE ABSORPTION OF HYDROGEN ON LOW PRESSURE HYDRIDE MATERIALS
For this study, hydrogen getter materials (Zircaloy-4 and pure zirconium) that have a high affinity for hydrogen (and low overpressure) have been investigated to determine the hydrogen equilibrium pressure on Zircaloy-4 and pure zirconium. These materials, as with most getter materials, offered significant challenges to overcome given the low hydrogen equilibrium pressure for the temperature range of interest. Hydrogen-zirconium data exists for pure zirconium at 500 C and the corresponding hydrogen overpressure is roughly 0.01 torr. This manuscript presents the results of the equilibrium pressures for the absorption and desorption of hydrogen on zirconium materials at temperatures ranging from 400 C to 600 C. The equilibrium pressures in this temperature region range from 150 mtorr at 600 C to less than 0.1 mtorr at 400 C. It has been shown that the Zircaloy-4 and zirconium samples are extremely prone to surface oxidation prior to and during heating. This oxidation precludes the hydrogen uptake, and therefore samples must be heated under a minimum vacuum of 5 x 10{sup -6} torr. In addition, the Zircaloy-4 samples should be heated at a sufficiently low rate to maintain the system pressure below 0.5 mtorr since an increase in pressure above 0.5 mtorr could possibly …
Date:
April 3, 2012
Creator:
Morgan, G. & Korinko, P.
Object Type:
Article
System:
The UNT Digital Library
Acceptance of Classified Excess Components for Disposal at Area 5
This slide-show discusses weapons dismantlement and disposal, issues related to classified waste and their solutions.
Date:
April 9, 2012
Creator:
Poling, Jeanne & Saad, Max
Object Type:
Article
System:
The UNT Digital Library
Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010
This report presents the results of an evaluation of juvenile Chinook salmon (Oncorhynchus tshawytscha) behavior at Cougar Dam on the south fork of the McKenzie River in Oregon in 2010. The study was conducted by the Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers (USACE). The overall goal of the study was to characterize juvenile salmonid behavior and movement patterns in the immediate forebay of the Water Temperature Control (WTC) tower of the dam for USACE and fisheries resource managers use in making decisions about bioengineering designs for long-term structures and/or operations to facilitate safe downstream passage for juvenile salmonids. We collected acoustic imaging (Dual-Frequency Identification Sonar; DIDSON) data from March 1, 2010, through January 31, 2011. Juvenile salmonids (hereafter, called 'fish') were present in the immediate forebay of the WTC tower throughout the study. Fish abundance index was low in early spring (<200 fish per sample-day), increased in late April, and peaked on May 19 (6,039 fish). A second peak was observed on June 6 (2904 fish). Fish abundance index decreased in early June and remained low in the summer months (<100 fish per sample-day). During the fall and winter, fish numbers varied with a peak …
Date:
April 1, 2012
Creator:
Khan, Fenton; Johnson, Gary E.; Royer, Ida M.; Phillips, Nathan RJ; Hughes, James S.; Fischer, Eric S. et al.
Object Type:
Report
System:
The UNT Digital Library
Acquisition of Sino-Japanese Characters by Non-Native Language Students: A Primary Language Approach
Poster for the 2012 University Scholars Day at the University of North Texas. This poster discusses research on how non-native, western speakers acquire languages involving Sino/Japanese characters. Specifically, it addresses how elements from instruction in the native language and culture may be modified to enhance mastery of the given language with regard to character use and literacy.
Date:
April 19, 2012
Creator:
Posey, Eric & Verrill, Diane
Object Type:
Poster
System:
The UNT Digital Library