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6,072 Matching Results
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81st Texas Legislature, Senate Bill 1661, Chapter 164
Bill introduced by the Texas Senate relating to child support liens on real property.
Date:
May 26, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Concurrent Resolutions 58
Concurrent resolution introduced by the Texas Senate and House of Representatives relating to recognizing April 12 through 18, 2009, as Texas Fraternal Week.
Date:
May 26, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
AAAR 28th Annual Conference Symposia Focusing on Topics of Interest to the U.S. DOE Atmospheric Science Program - October 26-30, 2009
This report addresses the secondary aerosol is an important component of atmospheric fine particles that generally consists of organics, sulfates, and nitrates.
Date:
October 26, 2009
Creator:
Ziemann, Paul
Object Type:
Article
System:
The UNT Digital Library
[AACSB International Certificate of Accreditation]
Certificate that proves the continued accreditation of UNT under the AACSB. The Certificate reads "The Association to Advance Collegiate Schools of Business; AACSB International Certificate of Accreditation granted to University of North Texas for achievement of the highest standard in management education through a commitment to quality and continuous improvement; College of Business; April 26, 2009 Maintenance of Business Accreditation". It is signed by both the President and the Chair of the Board of Directors of the organization.
Date:
April 26, 2009
Creator:
The Association to Advance Collegiate Schools of Business
Object Type:
Text
System:
The UNT Digital Library
Ab Initio Many-Body Calculations Of n-3H, n-4He, p-3,4He, And n-10Be Scattering
We develop a new ab initio many-body approach capable of describing simultaneously both bound and scattering states in light nuclei, by combining the resonating-group method with the use of realistic interactions, and a microscopic and consistent description of the nucleon clusters. This approach preserves translational symmetry and Pauli principle. We present phase shifts for neutron scattering on {sup 3}H, {sup 4}He and {sup 10}Be and proton scattering on {sup 3,4}He, using realistic nucleon-nucleon potentials. Our A = 4 scattering results are compared to earlier ab initio calculations. We demonstrate that a proper treatment of the coupling to the n-{sup 10}Be continuum is essential to explain the parity-inverted ground state in {sup 11}Be.
Date:
March 26, 2008
Creator:
Quaglioni, S & Navratil, P
Object Type:
Article
System:
The UNT Digital Library
Ab initio study of low-energy electron collisions withtertafluoroethene, C2F4
We report the results of variational calculations of elastic electron scattering by tetrafluoroethene, C{sub 2}F{sub 4}, with incident electron energies ranging from 0.5 to 20 eV, using the complex Kohn method and effective core potentials. These are the first fully calculations to reproduce experimental angular differential cross sections at energies below 10 eV. Low-energy electron scattering by C{sub 2}F{sub 4} is sensitive to the inclusion of electronic correlation and target-distortion effects. We therefore present results that describe the dynamic polarization of the target by the incident electron. The calculated cross sections are compared with recent experimental measurements.
Date:
April 26, 2004
Creator:
Trevisan, C. S.; Orel, A. E. & Rescigno, Thomas N.
Object Type:
Article
System:
The UNT Digital Library
Abortion: Legislative Response
The primary focus of this issue brief is legislative action with respect to abortion. However, discussion of those legislative proposals necessarily involves a brief discussion of the leading U.S. Supreme Court decisions concerning a woman’s right to choose whether to terminate her pregnancy. For a more detailed discussion of the relevant case law, see CRS Report 95-724, Abortion Law Development: A Brief Overview.
Date:
October 26, 2004
Creator:
Shimabukuro, Jon O.; Lewis, Karen J. & Ely, Dana
Object Type:
Report
System:
The UNT Digital Library
Abrupt onset of a second energy gap at the superconducting transition of underdoped Bi2212
he superconducting gap--an energy scale tied to the superconducting phenomena--opens on the Fermi surface at the superconducting transition temperature (Tc) in conventional BCS superconductors. In underdoped high-Tc superconducting copper oxides, a pseudogap (whose relation to the superconducting gap remains a mystery) develops well above Tc (refs 1, 2). Whether the pseudogap is a distinct phenomenon or the incoherent continuation of the superconducting gap above Tc is one of the central questions in high-Tc research3, 4, 5, 6, 7, 8. Although some experimental evidence suggests that the two gaps are distinct9, 10, 11, 12, 13, 14, 15, 16, 17, 18, this issue is still under intense debate. A crucial piece of evidence to firmly establish this two-gap picture is still missing: a direct and unambiguous observation of a single-particle gap tied to the superconducting transition as function of temperature. Here we report the discovery of such an energy gap in underdoped Bi2Sr2CaCu2O8+delta in the momentum space region overlooked in previous measurements. Near the diagonal of Cu?O bond direction (nodal direction), we found a gap that opens at Tc and has a canonical (BCS-like) temperature dependence accompanied by the appearance of the so-called Bogoliubov quasi-particles, a classical signature of superconductivity. This is …
Date:
May 26, 2007
Creator:
Hussain, Zahid; Lee, W. S.; Vishik, I. M.; Tanaka, K.; Lu, D. H.; Sasagawa, T. et al.
Object Type:
Article
System:
The UNT Digital Library
Absorptance Measurements of Optical Coatings - A Round Robin
An international round robin study was conducted on the absorption measurement of laser-quality coatings. Sets of optically coated samples were made by a ''reactive DC magnetron'' sputtering and an ion beam sputtering deposition process. The sample set included a high reflector at 514 nm and a high reflector for the near infrared (1030 to 1318 nm), single layers of silicon dioxide, tantalum pentoxide, and hafnium dioxide. For calibration purposes, a sample metalized with hafnium and an uncoated, superpolished fused silica substrate were also included. The set was sent to laboratory groups for absorptance measurement of these coatings. Whenever possible, each group was to measure a common, central area and another area specifically assigned to the respective group. Specific test protocols were also suggested in regards to the laser exposure time, power density, and surface preparation.
Date:
October 26, 2000
Creator:
Chow, R; Taylor, J R; Wu, Z L; Boccara, C A; Broulik, U; Commandre, M et al.
Object Type:
Article
System:
The UNT Digital Library
Abstraction of Seepage into Drifts
A total-system performance assessment (TSPA) for a potential nuclear-waste repository requires an estimate of the amount of water that might contact waste. This paper describes the model used for part of that estimation in a recent TSPA for the Yucca Mountain site. The discussion is limited to estimation of how much water might enter emplacement drifts; additional considerations related to flow within the drifts, and how much water might actually contact waste, are not addressed here. The unsaturated zone at Yucca Mountain is being considered for the potential repository, and a drift opening in unsaturated rock tends to act as a capillary barrier and divert much of the percolating water around it. For TSPA, the important questions regarding seepage are how many waste packages might be subjected to water flow and how much flow those packages might see. Because of heterogeneity of the rock and uncertainty about the future (how the climate will evolve, etc.), it is not possible to predict seepage amounts or locations with certainty. Thus, seepage is treated as a stochastic quantity in TSPA simulations, with the magnitude and spatial distribution of seepage sampled from uncertainty distributions. The distillation of the essential components of process modeling into …
Date:
September 26, 2000
Creator:
Wilson, M. L. & Ho, C. K.
Object Type:
Report
System:
The UNT Digital Library
Abu Sayyaf: Target of Philippine-U.S. Anti-Terrorism Cooperation
This report summarizes the history of the military relationship between the U.S. and the Philippines. The report connects this to the terrorist actions of Abu Sayyaf and his relationship to Al Qaeda specifically. Finally, the report discusses the military pressure the Philippine government has put on Abu Sayyaf and the challenges these operations face.
Date:
July 26, 2007
Creator:
Niksch, Larry A.
Object Type:
Report
System:
The UNT Digital Library
Acceleration of Polarized Protons in the AGS With Two Helical Partial Snakes.
Acceleration of polarized protons in the energy range of 5 to 25 GeV is particularly difficult: the depolarizing resonances are strong enough to cause significant depolarization but full Siberian snakes cause intolerably large orbit excursions and are not feasible in the AGS since straight sections are too short. Recently, two helical partial snakes with double pitch design have been built and installed in the AGS. With careful setup of optics at injection and along the ramp, this combination can eliminate the intrinsic and imperfection depolarizing resonances encountered during acceleration. This paper presents the accelerator setup and preliminary results.
Date:
June 26, 2006
Creator:
Huang, H.; Ahrens, L. A.; Bai, M.; Bravar, A.; Brown, K.; Courant, E. D. et al.
Object Type:
Article
System:
The UNT Digital Library
ACCELERATION PHYSICS CODE WEB REPOSITORY.
In the framework of the CARE HHH European Network, we have developed a web-based dynamic accelerator-physics code repository. We describe the design, structure and contents of this repository, illustrate its usage, and discuss our future plans, with emphasis on code benchmarking.
Date:
June 26, 2006
Creator:
WEI, J.
Object Type:
Article
System:
The UNT Digital Library
The Acceptance of Gifts of Free Meals by Members of Congress
This report outlines the rules by which Congress may accept free meals from outside private third parties. The report highlights that the most common exceptions to this rule are of de minimis value (under 50 dollars). Moreover, the report specifies that gifts from foreign agents, lobbyists, and those who have direct interest in congressional legislation are of the most concern.
Date:
August 26, 2005
Creator:
Maskell, Jack
Object Type:
Report
System:
The UNT Digital Library
Accepting Mixed Waste as Alternate Feed Material for Processing and Disposal at a Licensed Uranium Mill
Certain categories of mixed wastes that contain recoverable amounts of natural uranium can be processed for the recovery of valuable uranium, alone or together with other metals, at licensed uranium mills, and the resulting tailings permanently disposed of as 11e.(2) byproduct material in the mill's tailings impoundment, as an alternative to treatment and/or direct disposal at a mixed waste disposal facility. This paper discusses the regulatory background applicable to hazardous wastes, mixed wastes and uranium mills and, in particular, NRC's Alternate Feed Guidance under which alternate feed materials that contain certain types of mixed wastes may be processed and disposed of at uranium mills. The paper discusses the way in which the Alternate Feed Guidance has been interpreted in the past with respect to processing mixed wastes and the significance of recent changes in NRC's interpretation of the Alternate Feed Guidance that sets the stage for a broader range of mixed waste materials to be processed as alternate feed materials. The paper also reviews the le gal rationale and policy reasons why materials that would otherwise have to be treated and/or disposed of as mixed waste, at a mixed waste disposal facility, are exempt from RCRA when reprocessed as alternate …
Date:
February 26, 2002
Creator:
Frydenland, D. C.; Hochstein, R. F. & Thompson, A. J.
Object Type:
Article
System:
The UNT Digital Library
Acclerator R&D for a Linear Collider
The goal of this project was to perform simulations of beam transport in linear colliders, with an emphasis on emittance dilution, spin polarization transport, and development and testing of beam based tuning algorithms. Our simulations are based on an existing object-oriented particle-tracking library, Bmad. To facilitate the efficient development of simulations, an accelerator design and analysis program based on Bmad has been developed called Tao (Tool for Accelerator Optics). The three beam-based alignment algorithms, Dispersion Free Steering, Ballistic Alignment (BA), and the Kubo Method have been implemented in Tao. We have studied the effects of magnet misalignments, BPM resolution, beam jitter, stray fields, BPM and steering magnet failure and the effects of various cavity shape wakefields. A parametric study has been conducted in the presence of the above types of errors for all three alignment algorithms. We find that BPM resolution has only modest impact on the effectiveness of beam based alignment. The DFS correction algorithm was found to be very robust in situations where there were BPM and/or steering magnet failures. The wakefields in the main linac are very weak and cause negligible emittance growth. Spin tracking was extended to study all accelerator components between the damping ring and …
Date:
November 26, 2008
Creator:
Rubin, D.L.; Dugan, G.; Gibbons, L.; Palmer, M.; Patterson, R.; Sagan, D. et al.
Object Type:
Report
System:
The UNT Digital Library
Acquisition Workforce: Department of Defense's Plans to Address Workforce Size and Structure Challenges
A letter report issued by the General Accounting Office with an abstract that begins "The Department of Defense (DOD) downsized its acquisition workforce by half in the past decade. It now faces serious imbalances in the skills and experience of its remaining workforce and the potential loss of highly specialized knowledge if many of its acquisition specialists retire. DOD created the Acquisition 2005 Task Force to study its civilian acquisition workforce and develop a strategy to replenish personnel losses. In response to a legislative mandate, DOD reported on its plans to implement the task force's recommendations as required by the National Defense Authorization Act for Fiscal Year 2002. DOD's report shows that it has made progress in reshaping its acquisition workforce. For example, DOD is working to remove barriers to its strategic planning initiative; continuing to test various human capital innovations; and has begun making significant changes to its acquisition workforce-training program. DOD's report provides information on implementation of the task force's recommendations and their status. However, for many initiatives, DOD did not clearly describe the actions taken or when they occurred, nor did it identify all planned actions and schedules for completing the initiatives."
Date:
April 26, 2002
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
[ActBlue Invoice]
An invoice from Texas Stonewall Democratic Caucus to ActBlue of $780.00 on February 26, 2009.
Date:
February 26, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[ActBlue Texas Stonewall Democratic Caucus reporting center]
A report for the Texas Stonewall Democratic Caucus from their account with ActBlue. The report lists contribution summary of committee's contributions and fundraisers.
Date:
March 26, 2009
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Action Memorandum for General Decommissioning Activities under the Idaho Cleanup Project
This Action Memorandum documents the selected alternative to perform general decommissioning activities at the Idaho National Laboratory (INL) under the Idaho Cleanup Project (ICP). Preparation of this Action Memorandum has been performed in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended by the "Superfund Amendments and Reauthorization Act of 1986", and in accordance with the "National Oil and Hazardous Substances Pollution Contingency Plan". An engineering evaluation/cost analysis (EE/CA) was prepared and released for public comment and evaluated alternatives to accomplish the decommissioning of excess buildings and structures whose missions havve been completed.
Date:
October 26, 2006
Creator:
Reno, S. L.
Object Type:
Report
System:
The UNT Digital Library
Action Memorandum for the Engineering Test Reactor under the Idaho Cleanup Project
This Action Memorandum documents the selected alternative for decommissioning of the Engineering Test Reactor at the Idaho National Laboratory under the Idaho Cleanup Project. Since the missions of the Engineering Test Reactor Complex have been completed, an engineering evaluation/cost analysis that evaluated alternatives to accomplish the decommissioning of the Engineering Test Reactor Complex was prepared and released for public comment. The scope of this Action Memorandum is to encompass the final end state of the Complex and disposal of the Engineering Test Reactor vessel. The selected removal action includes removing and disposing of the vessel at the Idaho CERCLA Disposal Facility and demolishing the reactor building to ground surface.
Date:
January 26, 2007
Creator:
Culp, A. B.
Object Type:
Report
System:
The UNT Digital Library
Active control for turbulent premixed flame simulations
Many turbulent premixed flames of practical interest are statistically stationary. They occur in combustors that have anchoring mechanisms to prevent blow-off and flashback. The stabilization devices often introduce a level of geometric complexity that is prohibitive for detailed computational studies of turbulent flame dynamics. As a result, typical detailed simulations are performed in simplified model configurations such as decaying isotropic turbulence or inflowing turbulence. In these configurations, the turbulence seen by the flame either decays or, in the latter case, increases as the flame accelerates toward the turbulent inflow. This limits the duration of the eddy evolutions experienced by the flame at a given level of turbulent intensity, so that statistically valid observations cannot be made. In this paper, we apply a feedback control to computationally stabilize an otherwise unstable turbulent premixed flame in two dimensions. For the simulations, we specify turbulent in flow conditions and dynamically adjust the integrated fueling rate to control the mean location of the flame in the domain. We outline the numerical procedure, and illustrate the behavior of the control algorithm. We use the simulations to study the propagation and the local chemical variability of turbulent flame chemistry.
Date:
March 26, 2004
Creator:
Bell, John B.; Day, Marcus S.; Grcar, Joseph F. & Lijewski, Michael J.
Object Type:
Article
System:
The UNT Digital Library
Adaptive Dynamic Bayesian Networks
A discrete-time Markov process can be compactly modeled as a dynamic Bayesian network (DBN)--a graphical model with nodes representing random variables and directed edges indicating causality between variables. Each node has a probability distribution, conditional on the variables represented by the parent nodes. A DBN's graphical structure encodes fixed conditional dependencies between variables. But in real-world systems, conditional dependencies between variables may be unknown a priori or may vary over time. Model errors can result if the DBN fails to capture all possible interactions between variables. Thus, we explore the representational framework of adaptive DBNs, whose structure and parameters can change from one time step to the next: a distribution's parameters and its set of conditional variables are dynamic. This work builds on recent work in nonparametric Bayesian modeling, such as hierarchical Dirichlet processes, infinite-state hidden Markov networks and structured priors for Bayes net learning. In this paper, we will explain the motivation for our interest in adaptive DBNs, show how popular nonparametric methods are combined to formulate the foundations for adaptive DBNs, and present preliminary results.
Date:
October 26, 2007
Creator:
Ng, B M
Object Type:
Article
System:
The UNT Digital Library
Adaptive Optics Control Strategies for Extremely Large Telescopes
Adaptive optics for the 30-100 meter class telescopes now being considered will require an extension in almost every area of AO system component technology. In this paper, we present scaling laws and strawman error budgets for AO systems on extremely large telescopes (ELTs) and discuss the implications for component technology and computational architecture. In the component technology area, we discuss the advanced efforts being pursued at the NSF Center for Adaptive Optics (CfAO) in the development of large number of degrees of freedom deformable mirrors, wavefront sensors, and guidestar lasers. It is important to note that the scaling of present wavefront reconstructor algorithms will become computationally intractable for ELTs and will require the development of new algorithms and advanced numerical mathematics techniques. We present the computational issues and discuss the characteristics of new algorithmic approaches that show promise in scaling to ELT AO systems.
Date:
July 26, 2001
Creator:
Gavel, D T
Object Type:
Article
System:
The UNT Digital Library