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1,115 Matching Results

Start Over Decade 2000-2009 Month May

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(open access)

John Harbison's The Flight into Egypt: An Analysis for Performance

John Harbison's status as a significant contemporary American composer is confirmed by his numerous appointments, honorary degrees, and awards. He is the recipient of nearly every major composition award, with works performed by major orchestras and in important opera houses spanning the world. This paper examines in detail Harbison's most acclaimed choral work, the 1987 Pulitzer Prize-winning The Flight into Egypt. This study of the score is a "conductor's analysis," offering a musical guide for the conductor who seeks to perform this work. To provide a context for the discussion, Chapter 1 offers a brief biographical sketch of Harbison's life and career. Chapter 2 provides the analysis of the work and includes a history from commission to premier, a discussion of Harbison's selection of text, and an examination of the pitch organization which informs the piece. In Chapter 3, I present important rehearsal and performance implications to consider when undertaking a performance of the work. Interviews with two well-regarded conductors who have performed The Flight into Egypt, David Hoose and Patrick Gardner, and the composer himself, provide valuable insight into this discourse.

Date: May 2008

Creator: Galante, Brian Edward, 1974-

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Programming the New Sextupole Strings in Booster

N/A

Date: May 1, 2003

Creator: Gardner, C. J.

Object Type: Report

System: The UNT Digital Library

(open access)

Setup and Performance of the Rhic Injector Accelerators for the 2005 Run With Copper Ions.

Copper ions for the 2005 run [1] of the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) are accelerated in the Tandem, Booster and AGS prior to injection into RHIC. The setup and performance of these accelerators with copper are reviewed in this paper.

Date: May 16, 2005

Creator: Ahrens, L.; Alessi, J. & Gardner, C. J.

Object Type: Article

System: The UNT Digital Library

(open access)

Search for right-handed W bosons in top quark decay

None

Date: May 1, 2005

Creator: Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

A Comparative Analysis of the Effectiveness of Three Different GED Preparation Programs

The purpose of this study was to identify effective instructional programs for GED tests preparation for students in a large suburban school district. Three different nonrandom, unequal naturally occurring instructional groups at three different locations were examined. One group participated in a traditional instruction program, a second group in a test/retest program, and a third group in a computer-assisted program. The demographics of the district population, the GED population, and the individual study groups were catalogued and analyzed. The demographics of the GED population were similar to the district population but different from the GED passers. Student characteristics did affect GED success. Both quantitative and qualitative data were gathered. Random students in each of the three groups were interviewed about their experiences in GED preparation using a questionnaire. Quantitative data were analyzed using frequencies, means, correlations, and a multiple regression analysis. Since the GED credential is an alternative to the high school diploma, its use as a dropout alternative is important to every school district. The study found that instructional methods had little impact on students' success in receiving the GED credential. The overall success rate of students was low in each group. The student's reading achievement score, GPA, and …

Date: May 2001

Creator: Gardner, Marlene K.

Object Type: Thesis or Dissertation

System: The UNT Digital Library

(open access)

Deep Ultrasound Enhancements Final Report

This study involves collaboration between Los Alamos National Laboratory and Lawrence Livermore National Laboratory to enhance and optimize LANL's ultrasonic inspection capabilities for production. Deep-penetrating ultrasonic testing enhancement studies will extend the current capabilities, which only look for disbonds. Current ultrasonic methods in production use 15-20 MHz to inspect for disbonds. The enhanced capabilities use 5 MHz to penetrate to the back surface and image the back surface for any flaws. The enhanced capabilities for back surface inspection use transducers and squirter modifications that can be incorporated into the existing production system. In a production setup the current 15-20 MHz transducer and squirter would perform a bond inspection, followed by a deep inspection that would be performed by simply swapping out the 5 MHz transducer and squirter. Surrogate samples were manufactured of beryllium and bismuth to perform the ultrasonic enhancement studies. The samples were used to simulate flaws on the back surface and study ultrasound's ability to image them. The ultrasonic technique was optimized by performing experiments with these samples and analyzing transducer performance in detecting flaws in the surrogate. Beam patterns were also studied experimentally using a steel ball reflector to measure beam patterns, focal points, and sensitivities to …

Date: May 1, 2006

Creator: Quarry, M.; Thomas, G.; Ward, W. & Gardner, D.

Object Type: Report

System: The UNT Digital Library

(open access)

U.S. Circuit and District Court Nominations by President George W. Bush During the 107th-109th Congresses

None

Date: May 24, 2006

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

Polarized proton performance of AGS in run 8 operation

None

Date: May 4, 2009

Creator: Huang, H.; Ahrens, L.; Bai, M.; Brown, K. A.; Gardner, C.; Glenn, J. W. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

The RHIC Injector Accelerators Configurations, and Performance for the RHIC 2003 Au-D Physics Run.

The RHIC 2003 Physics Run [1] required collisions between gold ions and deuterons. The injector necessarily had to deliver adequate quality (transverse and longitudinal emittance) and quantity of both species. For gold this was a continuing evolution from past work [2]. For deuterons it was new territory. For the filling of the RHIC the injector not only had to deliver quality beams but also had to switch between these species quickly. This paper details the collider requirements and our success in meeting these. Some details of the configurations employed are given.

Date: May 12, 2003

Creator: Ahrens, L.; Benjamin, J.; Blaskiewicz, M.; Brennan, J. M.; Brown, K. A.; Carlson, K. A. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

Acceleration of Polarized Protons in the Ags With Two Helical Partial Snakes.

The RHIC spin program requires 2 x 10{sup 11} proton/bunch with 70% polarization. As the injector to RHIC, AGS is the bottleneck for preserving polarization: there is no space for a full snake to overcome numerous depolarizing resonances. An ac dipole and a partial snake have been used to preserve beam polarization in the past few years. Two helical snakes have been built and installed in the AGS. With careful setup of optics at injection and along the ramp, this combination can eliminate all depolarizing resonances encountered during acceleration. This paper presents the setup and preliminary results.

Date: May 16, 2005

Creator: Huang, H.; Ahrens, L.; Bai, M.; Brown, K.; Courant, E. D.; Gardner, C. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

Polarized Proton Operations in the Ags and RHIC.

Polarized proton beam has been accelerated and stored at 100 GeV in Relativistic Heavy Ion Collider (RHIC) to study spin effects in the hadronic reactions. The essential equipment includes four Siberian snakes and eight spin rotators in two RHIC rings, a partial snake in the AGS, fast relative polarimeters, and ac dipoles in the AGS and RHIC. This paper summarizes the performance of RHIC as a polarized proton collider and of AGS as the injector to RHIC.

Date: May 12, 2003

Creator: Huang, H.; Ahrens, L.; Bai, M.; Beebe-Wang, J.; Alessi, J.; Alekseev, I. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

Commissioning Results of Slow Extraction of Heavy Ions From the AGS Booster.

Brookhaven's AGS Booster has been modified to deliver slow extracted beam to a new beam line, the NASA Space Radiation Laboratory (NSRL). This facility was constructed in collaboration with NASA for the purpose of performing radiation effect studies for the NASA space program. The design of the resonant extraction system has been described in [1]. A more detailed description, which includes predictions of the slow extracted beam time structure has been described in [2]. In this report we will present results of the system commissioning and performance.

Date: May 12, 2003

Creator: Brown, K. A.; Bellavia, S.; Binello, S.; Brelsford, B.; Dumont, D.; Eng, W. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

Residual stress measurement in YBCO thin films.

Residual stress in YBCO films on Ag and Hastelloy C substrates was determined by using 3-D optical interferometry and laser scanning to measure the change in curvature radius before and after film deposition. The residual stress was obtained by appropriate analysis of curvature measurements. Consistent with residual thermal stress calculations based on the thermal expansion coefficient mismatch between the substrates and YBCO film, the measured residual stress in the YBCO film on Hastelloy C substrate was tensile, while it was compressive on the Ag substrate. The stress values measured by the two techniques were generally in good agreement, suggesting that optical interferometry and laser scanning have promise for measuring residual stresses in thin films.

Date: May 13, 2002

Creator: Cheon, J. H. & Singh, J. P.

Object Type: Article

System: The UNT Digital Library

(open access)

Science and Technology for Bioterrorism Defense

The Lawrence Livermore National Laboratory (LLNL) Chemical & Biological National Security Program (CBNP) provides science, technology, and integrated systems for chemical and biological security. Our approach is to develop and field systems that dramatically improve the nation's capabilities to prevent, prepare for, detect, and respond to terrorist use of chemical or biological weapons.

Date: May 4, 2004

Creator: Fitch, J P

Object Type: Article

System: The UNT Digital Library

(open access)

A quasilinear model for solute transport under unsaturated flow

We developed an analytical solution for solute transport under steady-state, two-dimensional, unsaturated flow and transport conditions for the investigation of high-level radioactive waste disposal. The two-dimensional, unsaturated flow problem is treated using the quasilinear flow method for a system with homogeneous material properties. Dispersion is modeled as isotropic and is proportional to the effective hydraulic conductivity. This leads to a quasilinear form for the transport problem in terms of a scalar potential that is analogous to the Kirchhoff potential for quasilinear flow. The solutions for both flow and transport scalar potentials take the form of Fourier series. The particular solution given here is for two sources of flow, with one source containing a dissolved solute. The solution method may easily be extended, however, for any combination of flow and solute sources under steady-state conditions. The analytical results for multidimensional solute transport problems, which previously could only be solved numerically, also offer an additional way to benchmark numerical solutions. An analytical solution for two-dimensional, steady-state solute transport under unsaturated flow conditions is presented. A specific case with two sources is solved but may be generalized to any combination of sources. The analytical results complement numerical solutions, which were previously required to …

Date: May 15, 2009

Creator: Houseworth, J.E. & Leem, J.

Object Type: Article

System: The UNT Digital Library

(open access)

Performance Limitations in High-Energy Ion Colliders

High-energy ion colliders (hadron colliders operating with ions other than protons) are premier research tools for nuclear physics. The collision energy and high luminosity are important design and operations considerations. The experiments also expect flexibility with frequent changes in the collision energy, detector fields, and ion species, including asymmetric collisions. For the creation, acceleration, and storage of bright intense ion beams limits are set by space charge, charge exchange, and intrabeam scattering effects. The latter leads to luminosity lifetimes of only a few hours for intense heavy ions beams. Currently, the Relativistic Heavy Ion Collider (RHIC) at BNL is the only operating high-energy ion collider. Later this decade the Large Hadron Collider (LHC), under construction at CERN, will also run with heavy ions.

Date: May 16, 2005

Creator: Fischer, W.

Object Type: Article

System: The UNT Digital Library