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3-D full waveform inversion of seismic data; Part I. Theory
Full waveform inversion of seismic data is a challenging subject partly because of the lack of precise knowledge of the source. Since currently available approaches involve some form of approximations to the source, inversion results are subject to the quality and the choice of the source information used. A new full waveform inversion scheme has been introduced (Lee and Kim, 2003) using normalized wavefield for simple two-dimensional (2-D) scalar problems. The method does not require source information, so potential inversion errors due to source estimation may be eliminated. A gather of seismic traces is first Fourier-transformed into the frequency domain and a normalized wavefield is obtained for each trace in the frequency domain. Normalization is done with respect to the frequency response of a reference trace selected from the gather, so the complex-valued normalized wavefield is source-independent and dimensionless. The inversion algorithm minimizes misfits between measured normalized wavefield and numerically computed normalized wavefield. In this paper the full waveform inversion is extended to three-dimensional (3-D) problems.
Date:
May 12, 2003
Creator:
Lee, Ki Ha
Object Type:
Article
System:
The UNT Digital Library
324 Building special-case waste assessment in support of the 324 Building closure (TPA milestone M-89-05)
Hanford Federal Facility Agreement and Consent Order, also known as the Tri-Party Agreement Milestone M-89-05 requires US Department of Energy, Richland Operations Office to complete a 324 Building Special Case Waste Assessment in Support of the 324 Building Closure. This document has been prepared with the intent of meeting this regulatory commitment. Alternatives for the Special Case Wastes located in the 324 Building were defined and analyzed. Based on the criteria of safety, environmental, complexity of interfaces, risk, cost, schedule, and long-term operability and maintainability, the best alternative was chosen. Waste packaging and transportation options are also included in the recommendations. The waste disposition recommendations for the B-Cell dispersibles/tank heels and High-Level Vault packaged residuals are to direct them to the Plutonium Uranium Extraction Facility (PUREX) Number 2 storage tunnel.
Date:
May 12, 1998
Creator:
Hobart, R.L.
Object Type:
Report
System:
The UNT Digital Library
500 MW X-BAND RF SYSTEM OF A 0.25 GEV ELECTRON LINAC FOR ADVANCED COMPTON SCATTERING SOURCE APPLICATION
A Mono-Energetic Gamma-Ray (MEGa-Ray) Compton scattering light source is being developed at LLNL in collaboration with SLAC National Accelerator Laboratory. The electron beam for the Compton scattering interaction will be generated by a X-band RF gun and a X-band LINAC at the frequency of 11.424 GHz. High power RF in excess of 500 MW is needed to accelerate the electrons to energy of 250 MeV or greater for the interaction. Two high power klystron amplifiers, each capable of generating 50 MW, 1.5 msec pulses, will be the main high power RF sources for the system. These klystrons will be powered by state of the art solid-state high voltage modulators. A RF pulse compressor, similar to the SLED II pulse compressor, will compress the klystron output pulse with a power gain factor of five. For compactness consideration, we are looking at a folded waveguide setup. This will give us 500 MW at output of the compressor. The compressed pulse will then be distributed to the RF gun and to six traveling wave accelerator sections. Phase and amplitude control are located at the RF gun input and additional control points along the LINAC to allow for parameter control during operation. This high …
Date:
May 12, 2010
Creator:
Chu, T S; Anderson, S G; Gibson, D J; Hartemann, F V; Marsh, R A; Siders, C et al.
Object Type:
Article
System:
The UNT Digital Library
2016 Paid Leave Analysis Grants: Prospective Applicant Webinar
This presentation is a webinar to discuss eligibility, application and submission requirements, evaluation criteria, and Review and Selection Process for the paid leave analysis grants.
Date:
May 12, 2016
Creator:
Gupta, Pronita & Watson, Laura
Object Type:
Presentation
System:
The UNT Digital Library
S. 2557, “Oil and Gas Industry Antitrust Act of 2006”: Brief Legal Analysis
This report analyzes ways to improve antitrust laws through S.557. These include, but are not limited to: mitigating regional shortages of oil petroleum and natural gas products, creating a federal task force to analyze information-sharing in the industry, and make U.S. antitrust laws applicable to the Organization of Petroleum Exporting Countries (OPEC).
Date:
May 12, 2006
Creator:
Rubin, Janice E.
Object Type:
Report
System:
The UNT Digital Library
3D Computations and Experiments
This project is in its first full year after the combining of two previously funded projects: ''3D Code Development'' and ''Dynamic Material Properties''. The motivation behind this move was to emphasize and strengthen the ties between the experimental work and the computational model development in the materials area. The next year's activities will indicate the merging of the two efforts. The current activity is structured in two tasks. Task A, ''Simulations and Measurements'', combines all the material model development and associated numerical work with the materials-oriented experimental activities. Task B, ''ALE3D Development'', is a continuation of the non-materials related activities from the previous project.
Date:
May 12, 2003
Creator:
Couch, R; Faux, D; Goto, D & Nikkel, D
Object Type:
Report
System:
The UNT Digital Library
3Q/4Q99 F-Area Hazardous Waste Management Facility Corrective Action Report - Third and Fourth Quarter 1999, Volumes I and II
Savannah River Site (SRS) monitors groundwater quality at the F-Area Hazardous Waste management Facility (HWMF) and provides results of this monitoring to the South Carolina Department of Health and Environmental Control (SCDHEC) semiannually as required by the Resource Conservation and Recovery Act (RCRA) permit. SRS also performs monthly sampling of the Wastewater Treatment Unit (WTU) effluent in accordance with Section C of the Underground Injection Control (UIC) application.
Date:
May 12, 2000
Creator:
Chase, J.
Object Type:
Report
System:
The UNT Digital Library
78th Texas Legislature, Regular Session, Senate Bill 151, Chapter 19
Bill introduced by the Texas Senate relating to the recognition of foreign adoptions and the issuance of a supplementary birth certificate
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, Senate Bill 209, Chapter 20
Bill introduced by the Texas Senate relating to prohibiting a motor vehicle from being equipped with certain video equipment and devices.
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, Senate Bill 354, Chapter 21
Bill introduced by the Texas Senate relating to the jurisdiction of certain district courts and criminal district courts of Tarrant County.
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, Senate Bill 375, Chapter 22
Bill introduced by the Texas Senate relating to the location where the Court of Appeals for the Ninth Court of Appeals District transacts business.
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, Senate Bill 491, Chapter 23
Bill introduced by the Texas Senate relating to an assessment of school-based mental health and substance abuse programs.
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, Senate Bill 520, Chapter 24
Bill introduced by the Texas Senate relating to the composition of the 83rd Judicial District and to the election of the district attorney for that district.
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, Senate Bill 761, Chapter 25
Bill introduced by the Texas Senate relating to the requirement that certain contracts awarded by the Veterans' Land Board be subject to competitive bidding.
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, Senate Bill 979, Chapter 26
Bill introduced by the Texas Senate relating to the composition of the 274th Judicial District and the jurisdiction of the 207th and 274th district courts.
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, Senate Bill 1430, Chapter 27
Bill introduced by the Texas Senate relating to additional interest for default on certain secondary mortgage loans
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
78th Texas Legislature, Regular Session, Senate Bill 1580, Chapter 28
Bill introduced by the Texas Senate relating to bond requirements for privatized maintenance contracts.
Date:
May 12, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Concurrent Resolution 119
Concurrent resolution introduced by the Texas House of Representatives and Senate relating to honoring Kathryn Bailey Allen of Tyler on the occasion of her 90th birthday.
Date:
May 12, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, House Bill 1040, Chapter 24
Bill introduced by the Texas Senate relating to the board of directors of the Canadian River Municipal Water Authority.
Date:
May 12, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, House Bill 1149, Chapter 25
Bill introduced by the Texas Senate relating to authorizing the Texas Board of Criminal Justice to sell certain real property for municipal airport expansion.
Date:
May 12, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 602, Chapter 11
Bill introduced by the Texas House of Representatives relating to designation of Midwestern State University as a public liberal arts university.
Date:
May 12, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 753, Chapter 12
Bill introduced by the Texas House of Representatives relating to the date for electing directors of the Goliad County Groundwater Conservation District.
Date:
May 12, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 1484, Chapter 13
Bill introduced by the Texas House of Representatives relating to the use of certain professional titles by interior designers.
Date:
May 12, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 2073, Chapter 14
Bill introduced by the Texas House of Representatives relating to plans by local governments in coastal areas for reducing public expenditures for erosion and storm damage losses to public and private property.
Date:
May 12, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History