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1,744 Matching Results
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Analysis of kicker noise induced beam emittance growth
Over the last few years, physicists have occasionally observed the presence of noise acting on the RHIC beams leading to emittance growth at high beam energies. While the noise was sporadic in the past, it became persistent during the Run-11 setup period. An investigation diagnosed the source as originating from the RHIC dump kicker system. Once identified the issue was quickly resolved. We report in this paper the investigation result, circuit analysis, measured and simulated waveforms, solutions, and future plans.
Date:
May 20, 2012
Creator:
Zhang, W.; Sandberg, J.; Ahrens, L.; Blacker, I. M.; Brennan, M.; Blaskiewicz, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Analysis of Roger-ducasse’s Pastorale Pour Orgue
Pastorale pour Orgue (1909) is Jean Jules Aimable Roger-Ducasse’s only solo organ composition, which demonstrates skillful use of organ colors and demands a virtuoso technique for performance. Writing Pastorale in 1909, Roger-Ducasse synthesized compositional styles and techniques of two very different compositional approaches – impressionism and classicism. This study examines the stylistic characteristics of Pastorale by Roger-Ducasse as examples of both of these influences. the synthesis in Pastorale is primarily evident in the combination of classical forms and generic references with impressionist harmony and color. Thus, examining these musical elements provides hitherto unexplored insights into Pastorale as a master solo organ work of the early twentieth century. the dissertation is divided into four chapters. the first chapter presents the purpose, the significance, and the state of research of the piece. in the second chapter, I examine the traits of classicism through genre, form, thematic variation and other classicist elements of the composition. the third chapter presents the traits of impressionism including harmonic parallelism, extended chords, pedal points, ostinatos, and whole-tone scales. in the fourth chapter, I summarize the study and make a suggestion for further research of the piece.
Date:
May 2012
Creator:
Kim, Jung-Won
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Analysis of Sources Affecting Ambient Particulate Matter in Brownsville, Texas
Texas is the second largest state in U.S.A. based on geographical area, population and the economy. It is home to several large coastal urban areas with major industries and infrastructure supporting the fossil-fuel based energy sector. Most of the major cities on the state have been impacted by significant air pollution events over the past decade. Studies conducted in the southern coastal region of TX have identified long range transport as a major contributor of particulate matter (PM) pollution along with local emissions. Biomass burns, secondary sulfates and diesel emissions sources are comprise as the dominant mass of PM2.5 have been noted to be formed by the long range transport biomass from Central America. Thus, the primary objective of this study was to identify and quantify local as well as regional sources contributing to the PM pollution in the coastal area of Brownsville located along the Gulf of Mexico. Source apportionment techniques such as principal component analysis (PCA) and positive matrix factorization (PMF) were employed on the air quality monitoring data to identify and quantify local and regional sources affecting this coastal region. As a supplement to the PMF and PCA, conditional probability function (CPF) analysis and potential source contribution …
Date:
May 2012
Creator:
Diaz Poueriet, Pablo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Analysis of the Correspondence Between the Measures Collected by an Autism Treatment Center and its Stated Mission Goals
This study was a program evaluation for an autism treatment center for the period of April 2008 through August 2011. the study extended previous evaluations of the autism treatment center. the purpose of this evaluation was to determine the degree to which the center’s measures corresponded with its stated mission goals. a number of data sources were reviewed including client records of demographic and outcome information. Findings suggest the center maintained records that allow for the evaluation of most of its mission’s goals. There were, however, difficulties with data collection, storage, and retrieval. the present program evaluation found that missing information and lack of follow-up information hindered efforts toward mission evaluation.
Date:
May 2012
Creator:
Kowalchuk, Holly M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Analysis of Vernier Scans during the PP2PP run in 2009 (pp at 100 GeV/beam)
N/A
Date:
May 1, 2012
Creator:
A., Drees
Object Type:
Report
System:
The UNT Digital Library
Analyzing Visitors’ Discourse, Attitudes, Perceptions, and Knowledge Acquisition in an Art Museum Tour After Using a 3D Virtual Environment
The main purpose of this mixed methods research was to explore and analyze visitors’ overall experience while they attended a museum exhibition, and examine how this experience was affected by previously using a virtual 3dimensional representation of the museum itself. The research measured knowledge acquisition in a virtual museum, and compared this knowledge acquired between a virtual museum versus a real one, employing a series of questionnaires, unobtrusive observations, surveys, personal and group interviews related to the exhibition and the artist. A group of twenty-seven undergraduate students in their first semester at the College of Architecture and Design of the Autonomous University of the State of Mexico participated in the research, and were divided in two groups, one of which used a 3D virtual representation previous to the museum visit. Results show that participants who experienced the virtual museum concurred that using it was a positive experience that prepared them to go to the real museum because they knew already what they were going to find. Most of the participants who experienced the virtual museum exhibited an increased activity during their museum visit, either agreeing, being more participative, concurring and showing acceptance, asking questions, or even giving their opinion and …
Date:
May 2012
Creator:
D’ Alba, Adriana
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Annual Sustainability Report 2010-2011
None
Date:
May 1, 2012
Creator:
Nichols, Teresa A.; Lapsa, Melissa Voss & Overbey, Randall M.
Object Type:
Report
System:
The UNT Digital Library
ANNUAL TECHNICAL PROGRESS REPORT OF RADIOISOTOPE POWER SYSTEMS MATERIALS PRODUCTION AND TECHNOLOGY PROGRAM TASKS FOR OCTOBER 1, 2010 THROUGH SEPTEMBER 30, 2011
The Office of Space and Defense Power Systems of the Department of Energy (DOE) provides Radioisotope Power Systems (RPS) for applications where conventional power systems are not feasible. For example, radioisotope thermoelectric generators were supplied by the DOE to the National Aeronautics and Space Administration (NASA) for deep space missions including the Cassini Mission launched in October of 1997 to study the planet Saturn. For the Cassini Mission, the Oak Ridge National Laboratory (ORNL) produced carbon-bonded carbon fiber (CBCF) insulator sets, iridium alloy blanks and foil, and clad vent sets (CVS) used in the generators. These components were also produced for the Pluto New Horizons and Mars Science Lab missions launched in January 2006 and November 2011respectively. The ORNL has been involved in developing materials and technology and producing components for the DOE for nearly four decades. This report reflects program guidance from the Office of RPS for fiscal year (FY) 2011. Production activities for prime quality (prime) CBCF insulator sets, iridium alloy blanks and foil, and CVS are summarized in this report. Technology activities are also reported that were conducted to improve the manufacturing processes, characterize materials, or to develop information for new RPS. Work has also been initiated …
Date:
May 1, 2012
Creator:
King, James F.
Object Type:
Report
System:
The UNT Digital Library
Antidumping and Countervailing Duties: Management Enhancements Needed to Improve Efforts to Detect and Deter Duty Evasion
A letter report issued by the Government Accountability Office with an abstract that begins "U.S. Customs and Border Protection (CBP) detects and deters evasion of antidumping and countervailing (AD/CV) duties through a three-part process that involves (1) identifying potential cases of evasion, (2) attempting to verify if evasion is occurring, and (3) taking enforcement action. To identify potential cases of evasion, CBP targets suspicious import activity, analyzes trends in import data, and follows up on allegations from external sources. If CBP identifies a potential case of evasion, it can use various techniques to attempt to verify whether evasion is occurring, such as asking importers for further information, auditing the records of importers suspected of evasion, and inspecting shipments arriving at ports of entry. If CBP is able to verify evasion, its options for taking enforcement action include (1) pursuing the collection of evaded duties, (2) imposing civil penalties, (3) conducting seizures, and (4) referring cases for criminal investigation. For example, between fiscal years 2007 to 2011, CBP assessed civil penalties totaling about $208 million against importers evading AD/CV duties."
Date:
May 17, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Application of Spatial Data Modeling and Geographical Information Systems (GIS) for Identification of Potential Siting Options for Various Electrical Generation Sources
Oak Ridge National Laboratory (ORNL) initiated an internal National Electric Generation Siting Study, which is an ongoing multiphase study addressing several key questions related to our national electrical energy supply. This effort has led to the development of a tool, OR-SAGE (Oak Ridge Siting Analysis for power Generation Expansion), to support siting evaluations. The objective in developing OR-SAGE was to use industry-accepted approaches and/or develop appropriate criteria for screening sites and employ an array of Geographic Information Systems (GIS) data sources at ORNL to identify candidate areas for a power generation technology application. The initial phase of the study examined nuclear power generation. These early nuclear phase results were shared with staff from the Electric Power Research Institute (EPRI), which formed the genesis and support for an expansion of the work to several other power generation forms, including advanced coal with carbon capture and storage (CCS), solar, and compressed air energy storage (CAES). Wind generation was not included in this scope of work for EPRI. The OR-SAGE tool is essentially a dynamic visualization database. The results shown in this report represent a single static set of results using a specific set of input parameters. In this case, the GIS input …
Date:
May 1, 2012
Creator:
Mays, Gary T; Belles, Randy; Blevins, Brandon R; Hadley, Stanton W; Harrison, Thomas J; Jochem, Warren C et al.
Object Type:
Report
System:
The UNT Digital Library
Application of the Principle of Maximum Conformality to the Top-Quark Forward-Backward Asymmetry at the Tevatron
The renormalization scale uncertainty can be eliminated by the Principle of Maximum Conformality (PMC) in a systematic scheme-independent way. Applying the PMC for the t{bar t}-pair hadroproduction at the NNLO level, we have found that the total cross-sections {sigma}{sub t{bar t}} at both the Tevatron and LHC remain almost unchanged when taking very disparate initial scales {mu}{sub R}{sup init} equal to m{sub t}, 10 m{sub t}, 20 m{sub t} and {radical}s, which is consistent with renormalization group invariance. As an important new application, we apply PMC scale-setting to study the top-quark forward-backward asymmetry. We observe that the more convergent perturbative series after PMC scale-setting leads to a more accurate top-quark forward-backward asymmetry. The resulting PMC prediction on the asymmetry is also free from the initial renormalization scale-dependence. Because the NLO PMC scale has a dip behavior for the (q{bar q})-channel at small subprocess collision energies, the importance of this channel to the asymmetry is increased. We observe that the asymmetries A{sub FB}{sup t{bar t}} and A{sub FB}{sup p{bar p}} at the Tevatron will be increased by 42% in comparison to the previous estimates obtained by using conventional scale-setting; i.e. we obtain A{sub FB}{sup t{bar t}PMC} {approx_equal} 12.5% and A{sub FB}{sup …
Date:
May 14, 2012
Creator:
Brodsky, Stanley J. & Wu, Xing-Gang
Object Type:
Article
System:
The UNT Digital Library
Applying the Battery Ownership Model in Pursuit of Optimal Battery Use Strategies
This Annual Merit Review presentation describes the application of the Battery Ownership Model for strategies for optimal battery use in electric drive vehicles (PEVs, PHEVs, and BEVs).
Date:
May 1, 2012
Creator:
Neubauer, J.; Ahmad, P.; Brooker, A.; Wood, E.; Smith, K.; Johnson, C. et al.
Object Type:
Presentation
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), Vol. 104, No. 18, Ed. 1 Thursday, May 3, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
May 3, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), Vol. 104, No. 19, Ed. 1 Thursday, May 10, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
May 10, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), Vol. 104, No. 20, Ed. 1 Thursday, May 17, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
May 17, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), Vol. 104, No. 22, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
May 31, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Are They Ready? a Multi-case Study of Traditional and Innovative Texas Teacher’s Perceptions of 21St Century Skills in Teaching and Learning
The 21st century is now in the second decade and the need for 21st century skills is discussed at all levels of education as necessary for student success in the future. Federal, state, and districts are addressing this need and have written technology plans to address 21st century skills needed. the purpose of this dissertation is to contribute to the knowledge of 21st century educational technology. the data includes seven recorded interviews from two separate research projects covering two models of education as teachers discuss teaching, learning, and technology. the data studied determines how educational technology perceived in the school environments has been integrated into the classrooms. the initial scripting of video interviews from two research projects began the analysis of data. Particular themes emerged in response to questions established by the two separate research projects focused on classroom, school, and district environmental arrangements that examined; teaching responsibilities and practices; student learning opportunities; and how technology is woven throughout instruction. Further exploration of themes stemmed from analysis conducted with the qualitative software program, NVivo 9. the themes discussed in this paper relate to instructor perceptions of teaching, learning, classroom procedures, and the role technology plays in each. Also noted are …
Date:
May 2012
Creator:
Royal, Joy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Argei: Sex, War, and Crucifixion in Rome and the Ancient Near East
The purpose of the Roman Argei ceremony, during which the Vestal Virgins harvested made and paraded rush puppets only to throw them into the Tiber, is widely debated. Modern historians supply three main reasons for the purpose of the Argei: an agrarian act, a scapegoat, and finally as an offering averting deceased spirits or Lares. I suggest that the ceremony also related to war and the spectacle of displaying war casualties. I compare the ancient Near East and Rome and connect the element of war and husbandry and claim that the Argei paralleled the sacred marriage. in addition to an agricultural and purification rite, these rituals may have served as sympathetic magic for pre- and inter-war periods. As of yet, no author has proposed the Argei as a ceremony related to war. By looking at the Argei holistically I open the door for a new direction of inquiry on the Argei ceremony, fertility cults in the Near East and in Rome, and on the execution of war criminals.The Argei and new year’s sacred marriage both occurred during the initiation of campaign and spring planting and harvest season. Both in the ancient Near East and in Rome, animal victims were sacrificed …
Date:
May 2012
Creator:
Foust, Kristan Ewin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
ARM Climate Research Facility Radar Operations Plan
Roles, responsibilities, and processes associated with Atmospheric Radiation Measurement (ARM) Radar Operations.
Date:
May 18, 2012
Creator:
Voyles, JW
Object Type:
Text
System:
The UNT Digital Library
Armenia, Azerbaijan, and Georgia: Political Developments and Implications for U.S. Interests
This report offers background information and recent more development in Armenia, Azerbaijan, and Georgia political and economic situation. It also discusses U.S. policy, U.S. aid, U.S. trade and investments to these countries, congressional response and other legislation.
Date:
May 1, 2012
Creator:
Nichol, Jim
Object Type:
Report
System:
The UNT Digital Library
Army Drawdown and Restructuring: Background and Issues for Congress
This is a report about Army Drwdown and Restructuring, specifically background and issues for congress.
Date:
May 18, 2012
Creator:
Feickert, Andrew
Object Type:
Report
System:
The UNT Digital Library
An Assessment of Integrated Health Management (IHM) Frameworks
In order to meet the ever increasing demand for energy, the United States nuclear industry is turning to life extension of existing nuclear power plants (NPPs). Economically ensuring the safe, secure, and reliable operation of aging nuclear power plants presents many challenges. The 2009 Light Water Reactor Sustainability Workshop identified online monitoring of active and structural components as essential to the better understanding and management of the challenges posed by aging nuclear power plants. Additionally, there is increasing adoption of condition-based maintenance (CBM) for active components in NPPs. These techniques provide a foundation upon which a variety of advanced online surveillance, diagnostic, and prognostic techniques can be deployed to continuously monitor and assess the health of NPP systems and components. The next step in the development of advanced online monitoring is to move beyond CBM to estimating the remaining useful life of active components using prognostic tools. Deployment of prognostic health management (PHM) on the scale of a NPP requires the use of an integrated health management (IHM) framework - a software product (or suite of products) used to manage the necessary elements needed for a complete implementation of online monitoring and prognostics. This paper provides a thoughtful look at …
Date:
May 1, 2012
Creator:
Lybeck, N.; Tawfik, M.; Bond, L. & Coble, J.
Object Type:
Article
System:
The UNT Digital Library
Assistance to Firefighters Program: Distribution of Fire Grant Funding
This report discusses the firefighting activities that are traditionally the responsibility of states and local communities. The report also talks about the funding for firefighters, which is provided mostly by state and local governments. However, during the 106th Congress, many in the fire community asserted that local fire departments require and deserve greater support from the federal government.
Date:
May 17, 2012
Creator:
Kruger, Lennard G.
Object Type:
Report
System:
The UNT Digital Library
An Audit Report on Incentive Compensation at the Teacher Retirement System, the Employees Retirement System, and the Permanent School Fund
Report of the Texas State Auditor's Office related to whether incentive compensation at the Teacher Retirement System (TRS), the Employees Retirement System (ERS), and the Permanent School Fund (PSF) was calculated and paid in accordance with policies and procedures.
Date:
May 2012
Creator:
Texas. Office of the State Auditor.
Object Type:
Report
System:
The Portal to Texas History