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Folder 3: 8th Annual Weekend Festival of Black Dance - Rhythm and Soul of a People, March 2-3, 2012
2,247
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28
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Search for New Bottomlike Quark Pair Decays Q Q-Bar to (T W- ) (T-Bar W -) in Same-Charge Dilepton Events
We report the most restrictive direct limits on masses of fourth-generation down-type quarks b{prime}, and quark-like composite fermions (B or T{sub 5/3}), decaying promptly to tW{sup {-+}}. We search for a significant excess of events with two same-charge leptons (e, {mu}), several hadronic jets, and missing transverse energy. An analysis of data from p{bar p} collisions with an integrated luminosity of 2.7 fb{sup -1} collected with the CDF II detector at Fermilab yields no evidence for such a signal, setting mass limits m{sub b{prime}}, m{sub B} > 338 GeV/c{sup 2} and m{sub T{sub 5/3}} > 365 GeV/c{sup 2} at 95% confidence level.
Date:
April 2, 2012
Creator:
Aaltonen, T.; Adelman, J.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A. et al.
Object Type:
Article
System:
The UNT Digital Library
Fermi LAT Observations of LS I +61 303: First Detection of an Orbital Modulation in GeV Gamma Rays
This Letter presents the first results from the observations of LS I +61{sup o}303 using Large Area Telescope data from the Fermi Gamma-Ray Space Telescope between 2008 August and 2009 March. Our results indicate variability that is consistent with the binary period, with the emission being modulated at 26.6 {+-} 0.5 days. This constitutes the first detection of orbital periodicity in high-energy gamma rays (20 MeV-100 GeV, HE). The light curve is characterized by a broad peak after periastron, as well as a smaller peak just before apastron. The spectrum is best represented by a power law with an exponential cutoff, yielding an overall flux above 100 MeV of 0.82 {+-} 0.03(stat) {+-} 0.07(syst) 10{sup -6} ph cm{sup -2} s{sup -1}, with a cutoff at 6.3 {+-} 1.1(stat) {+-} 0.4(syst) GeV and photon index {Gamma} = 2.21 {+-} 0.04(stat) {+-} 0.06(syst). There is no significant spectral change with orbital phase. The phase of maximum emission, close to periastron, hints at inverse Compton scattering as the main radiation mechanism. However, previous very high-energy gamma ray (>100 GeV, VHE) observations by MAGIC and VERITAS show peak emission close to apastron. This and the energy cutoff seen with Fermi suggest that the link …
Date:
April 2, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Atwood, W. B.; Axelsson, M.; Baldini, L. et al.
Object Type:
Article
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
VARIABILITY OF KD VALUES IN CEMENTITIOUS MATERIALS AND SEDIMENTS
Measured distribution coefficients (K{sub d} values) for environmental contaminants provide input data for performance assessments (PA) that evaluate physical and chemical phenomena for release of radionuclides from wasteforms, degradation of engineered components and subsequent transport of radionuclides through environmental media. Research efforts at SRNL to study the effects of formulation and curing variability on the physiochemical properties of the saltstone wasteform produced at the Saltstone Disposal Facility (SDF) are ongoing and provide information for the PA and Saltstone Operations. Furthermore, the range and distribution of plutonium K{sub d} values in soils is not known. Knowledge of these parameters is needed to provide guidance for stochastic modeling in the PA. Under the current SRS liquid waste processing system, supernate from F & H Tank Farm tanks is processed to remove actinides and fission products, resulting in a low-curie Decontaminated Salt Solution (DSS). At the Saltstone Production Facility (SPF), DSS is mixed with premix, comprised of blast furnace slag (BFS), Class F fly ash (FA), and portland cement (OPC) to form a grout mixture. The fresh grout is subsequently placed in SDF vaults where it cures through hydration reactions to produce saltstone, a hardened monolithic waste form. Variation in saltstone composition and …
Date:
February 2, 2012
Creator:
Almond, P.; Kaplan, D. & Shine, E.
Object Type:
Report
System:
The UNT Digital Library
Simultaneous Multiwavelength Observation of Mkn 501 in a Low State in 2006
None
Date:
April 2, 2012
Creator:
Anderhub, H.; Antonelli, L. A.; Antoranz, P.; Backes, M.; Baixeras, C.; Balestra, S. et al.
Object Type:
Article
System:
The UNT Digital Library
The Strategic Petroleum Reserve: Authorization, Operation, and Drawdown Policy
This report looks at the history, purpose, and current status of the Strategic Petroleum Reserve.
Date:
April 2, 2012
Creator:
Andrews, Anthony & Pirog, Robert
Object Type:
Report
System:
The UNT Digital Library
Renewable Energy and Environmental Sustainability Using Biomass From Dairy and Beef Animal Production: Final Report, Volume 1
The Texas Panhandle is regarded as the âÂÂCattle Feeding Capital of the WorldâÂÂ, producing 42% of the fed beef cattle in the United States within a 200-mile radius of Amarillo generating more than 5 million tons of feedlot manure /year. Apart from feedlots, the Bosque River Region in Erath County, just north of Waco, Texas with about 110,000 dairy cattle in over 250 dairies, produces 1.8 million tons of manure biomass (excreted plus bedding) per year. While the feedlot manure has been used extensively for irrigated and dry land crop production, most dairies, as well as other concentrated animal feeding operations (CAFOâÂÂs), the dairy farms utilize large lagoon areas to store wet animal biomass. Water runoff from these lagoons has been held responsible for the increased concentration of phosphorus and other contaminates in the Bosque River which drains into Lake WacoâÂÂthe primary source of potable water for WacoâÂÂs 108,500 people. The concentrated animal feeding operations may lead to land, water, and air pollution if waste handling systems and storage and treatment structures are not properly managed. Manure-based biomass (MBB) has the potential to be a source of green energy at large coal-fired power plants and on smaller-scale combustion systems at …
Date:
May 2, 2012
Creator:
Annamalai, Kalyan; Sweeten, John M.; Auvermann, Brent W.; Mukhtar, Saqib; Caperada, Sergio; Engler, Cady R. et al.
Object Type:
Report
System:
The UNT Digital Library
Influencing Self-Reported Health Among Rural Low-Income Women Through Health Care and Social Service Utilization: A Structural Equation Model
Article discussing a structural equation model and influencing self-reported health among rural low-income women through health care and social service utilization.
Date:
November 2, 2012
Creator:
Bice-Wigington, Tiffany & Huddleston-Casas, Catherine A.
Object Type:
Article
System:
The UNT Digital Library
The United Nations Convention on the Rights of the Child: Background and Policy Issues
This report provides an overview of the United Nations (U.N.) Convention on the Rights of the Child's (CRC's) background and structure and examines evolving U.S. policy toward the CRC, including past and current Administration positions and congressional perspectives. It also highlights issues for the 112th Congress, including the CRC's possible impact on federal and state laws, U.S. sovereignty, parental rights, and U.S. family planning and abortion policy. In addition, the report addresses the effectiveness of CRC in protecting the rights of children internationally and its potential use as an instrument of U.S. foreign policy.
Date:
July 2, 2012
Creator:
Blanchfield, Luisa
Object Type:
Report
System:
The UNT Digital Library
Linear Collider Test Facility: Twiss Parameter Analysis at the IP/Post-IP Location of the ATF2 Beam Line
At the first stage of the ATF2 beam tuning, vertical beam size is usually bigger than 3 {micro}m at the IP. Beam waist measurements using wire scanners and a laser wire are usually performed to check the initial matching of the beam through to the IP. These measurements are described in this paper for the optics currently used ({beta}{sub x} = 4cm and {beta}{sub y} = 1mm). Software implemented in the control room to automate these measurements with integrated analysis is also described. Measurements showed that {beta} functions and emittances were within errors of measurements when no rematching and coupling corrections were done. However, it was observed that the waist in the horizontal (X) and vertical (Y) plane was abnormally shifted and simulations were performed to try to understand these shifts. They also showed that multiknobs are needed in the current optics to correct simultaneously {alpha}{sub x}, {alpha}{sub y} and the horizontal dispersion (D{sub x}). Such multiknobs were found and their linearity and orthogonality were successfully checked using MAD optics code. The software for these multiknobs was implemented in the control room and waist scan measurements using the {alpha}{sub y} knob were successfully performed.
Date:
July 2, 2012
Creator:
Bolzon, Benoit; Jeremie, Andrea; Bai, Sha; Bambade, Philip & White, Glen
Object Type:
Article
System:
The UNT Digital Library
Temporary Assistance for Needy Families (TANF): Welfare-to-Work Revisited
None
Date:
October 2, 2012
Creator:
Bopp, Shannon & Falk, Gene
Object Type:
Report
System:
The UNT Digital Library
Center for Technology for Advanced Scientific Component Software (TASCS)
Indiana UniversityâÃÂÃÂs SWIM activities have primarily been in three areas. All are completed, but we are continuing to work on two of them because refinements are useful to both DoE laboratories and the high performance computing community.
Date:
August 2, 2012
Creator:
Bramley, Randall B.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, November 2, 2012
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 2, 2012
Creator:
Bright, James
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, October 2, 2012
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 2, 2012
Creator:
Bright, James
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Eliminating the Renormalization Scale Ambiguity for Top-Pair Production Using the Principle of Maximum Conformality
The uncertainty in setting the renormalization scale in finite-order perturbative QCD predictions using standard methods substantially reduces the precision of tests of the Standard Model in collider experiments. It is conventional to choose a typical momentum transfer of the process as the renormalization scale and take an arbitrary range to estimate the uncertainty in the QCD prediction. However, predictions using this procedure depend on the choice of renormalization scheme, leave a non-convergent renormalon perturbative series, and moreover, one obtains incorrect results when applied to QED processes. In contrast, if one fixes the renormalization scale using the Principle of Maximum Conformality (PMC), all non-conformal {l_brace}{beta}{sub i}{r_brace}-terms in the perturbative expansion series are summed into the running coupling, and one obtains a unique, scale-fixed, scheme-independent prediction at any finite order. The PMC renormalization scale {mu}{sub R}{sup PMC} and the resulting finite-order PMC prediction are both to high accuracy independent of choice of the initial renormalization scale {mu}{sub R}{sup init}, consistent with renormalization group invariance. Moreover, after PMC scale-setting, the n!-growth of the pQCD expansion is eliminated. Even the residual scale-dependence at fixed order due to unknown higher-order {l_brace}{beta}{sub i}{r_brace}-terms is substantially suppressed. As an application, we apply the PMC procedure to obtain …
Date:
April 2, 2012
Creator:
Brodsky, Stanley J. & Wu, Xing-Gang
Object Type:
Article
System:
The UNT Digital Library
Reliable High Performance Peta- and Exa-Scale Computing
As supercomputers become larger and more powerful, they are growing increasingly complex. This is reflected both in the exponentially increasing numbers of components in HPC systems (LLNL is currently installing the 1.6 million core Sequoia system) as well as the wide variety of software and hardware components that a typical system includes. At this scale it becomes infeasible to make each component sufficiently reliable to prevent regular faults somewhere in the system or to account for all possible cross-component interactions. The resulting faults and instability cause HPC applications to crash, perform sub-optimally or even produce erroneous results. As supercomputers continue to approach Exascale performance and full system reliability becomes prohibitively expensive, we will require novel techniques to bridge the gap between the lower reliability provided by hardware systems and users unchanging need for consistent performance and reliable results. Previous research on HPC system reliability has developed various techniques for tolerating and detecting various types of faults. However, these techniques have seen very limited real applicability because of our poor understanding of how real systems are affected by complex faults such as soft fault-induced bit flips or performance degradations. Prior work on such techniques has had very limited practical utility because …
Date:
April 2, 2012
Creator:
Bronevetsky, G
Object Type:
Report
System:
The UNT Digital Library
[Photograph of a bride about to throw a bouquet]
Photograph of a group of dancers performing on stage in wedding attire. A woman dressed as a bride stands at the front of the group. She holds a bouquet of flowers above her head as if she is about to throw it behind her. A man in a khaki-colored suit stands next to her. Four women in dresses gather behind them and look towards the bouquet. A man dressed as a priest stands on a short, wooden platform at the back of the stage. Photograph taken at the 8th annual Weekend Festival of Black Dance, Rhythm and Soul of a People sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
[2012-03-02..2012-03-03]
Creator:
Brown, Jirard
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph of a bride about to throw a bouquet on stage]
Photograph of a group of dancers performing on stage in wedding attire. A woman dressed as a bride squats down at the front of the group. She holds a bouquet of flowers as if she is about to throw it behind her. A man in a khaki-colored suit kneels down next to her. Five women in dresses gather behind them and look towards the bouquet. Photograph taken at the 8th annual Weekend Festival of Black Dance, Rhythm and Soul of a People sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
[2012-03-02..2012-03-03]
Creator:
Brown, Jirard
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph of a bride throwing a bouquet]
Photograph of a group of dancers performing on stage in wedding attire. A woman dressed as a bride stands at the front of the group and tosses a bouquet of flowers into the air. A man in a khaki-colored suit stands next to her. Five women in dresses gather behind them and look towards the bouquet. A man dressed as a priest stands on a short, wooden platform at the back of the stage. Photograph taken at the 8th annual Weekend Festival of Black Dance, Rhythm and Soul of a People sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
[2012-03-02..2012-03-03]
Creator:
Brown, Jirard
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph of a bride throwing a bouquet into the air]
Photograph of a group of dancers performing on stage in wedding attire. A woman dressed as a bride stands at the front of the group and tosses a bouquet of flowers into the air. A man in a khaki-colored suit stands next to her. Five women in dresses gather behind them and look towards the bouquet. A man dressed as a priest stands on a short, wooden platform at the back of the stage. Photograph taken at the 8th annual Weekend Festival of Black Dance, Rhythm and Soul of a People sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
[2012-03-02..2012-03-03]
Creator:
Brown, Jirard
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph of a bride throwing a bouquet into the air on stage]
Photograph of a group of dancers performing on stage in wedding attire. A woman dressed as a bride stands at the front of the group and tosses a bouquet of flowers into the air. A man in a khaki-colored suit stands next to her. Five women in dresses gather around them and reach for the bouquet. A man dressed as a priest stands on a short, wooden platform at the back of the stage. Photograph taken at the 8th annual Weekend Festival of Black Dance, Rhythm and Soul of a People sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
[2012-03-02..2012-03-03]
Creator:
Brown, Jirard
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph of a closeup of a dancer bending down to touch the stage]
Photograph of a closeup of a dancer performing on stage at a festival. He stands facing the right and bends forward to touch the stage with one arm. He raises his other arm above his head. He has long, dark hair and wears an off-white vest with checker-print pants. The back of the stage is dark. Photograph taken at the 8th annual Weekend Festival of Black Dance, Rhythm and Soul of a People sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
[2012-03-02..2012-03-03]
Creator:
Brown, Jirard
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph of a closeup of a dancer in a zebra print outfit]
Photograph of a woman performing a dance on stage at a festival. She stands with her side facing the camera, resting one hand on her hip and the other on her head. She has dark, shoulder-length hair and wears a white vest over a zebra print outfit. A large, red screen hangs down behind her. Photograph taken at the 8th annual Weekend Festival of Black Dance, Rhythm and Soul of a People sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
[2012-03-02..2012-03-03]
Creator:
Brown, Jirard
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph of a closeup of a dancer in checkered pants]
Photograph of a closeup of a man performing a dance on stage at a festival. He stands facing the right with his arms held out to the side. He wears a white, button-up vest and checker-print pants. The back of the stage is dark. Photograph taken at the 8th annual Weekend Festival of Black Dance, Rhythm and Soul of a People sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
[2012-03-02..2012-03-03]
Creator:
Brown, Jirard
Object Type:
Photograph
System:
The UNT Digital Library