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Texas Safety Action Report
Report regarding immediate and future actions to improve safety for Texans related to mass shootings and other attacks, and including explanations of relevant executive orders.
Date:
September 12, 2019
Creator:
Abbott, Greg, 1957-
Object Type:
Report
System:
The Portal to Texas History
Predictive Science Panel Unclassified Report, LLNL Meeting
None
Date:
September 12, 2013
Creator:
Adams, M
Object Type:
Report
System:
The UNT Digital Library
A Compact X-Band Linac for an X-Ray FEL
With the growing demand for FEL light sources, cost issues are being reevaluated. To make the machines more compact, higher frequency room temperature linacs are being considered, specifically ones using C-band (5.7 GHz) rf technology, for which 40 MV/m gradients are achievable. In this paper, we show that an X-band (11.4 GHz) linac using the technology developed for NLC/GLC can provide an even lower cost solution. In particular, stable operation is possible at gradients of 100 MV/m for single bunch operation and 70 MV/m for multibunch operation. The concern, of course, is whether the stronger wakefields will lead to unacceptable emittance dilution. However, we show that the small emittances produced in a 250 MeV, low bunch charge, LCLS-like S-band injector and bunch compressor can be preserved in a multi-GeV X-band linac with reasonable alignment tolerances. The successful lasing and operation of the LCLS [1] has generated world-wide interest in X-ray FELs. The demand for access to such a light source by researchers eager to harness the capabilities of this new tool far exceeds the numbers that can be accommodated, spurring plans for additional facilities. Along with cost, spatial considerations become increasingly important for a hard X-ray machine driven by a …
Date:
September 12, 2011
Creator:
Adolphsen, Chris; Huang, Zhirong; Bane, Karl L. F.; Li, Zenghai; Zhou, Feng; Wang, Faya et al.
Object Type:
Article
System:
The UNT Digital Library
Commissioning of the EBIS-based heavy ion preinjector at Brookhaven
The status is presented of the commissioning of a new heavy ion preinjector at Brookhaven National Laboratory. This preinjector uses an Electron Beam Ion Source (EBIS), and an RFQ and IH Linac, both operating at 100.625 MHz, to produce 2 MeV/u ions of any species for use, after further acceleration, at the Relativistic Heavy Ion Collider (RHIC) and the NASA Space Radiation Laboratory (NSRL). Among the increased capabilities provided by this preinjector are the ability to produce ions of any species, and the ability to switch between multiple species in 1 second, to simultaneously meet the needs of both science programs. For initial setup, helium beam from EBIS was injected and circulated in the Booster synchrotron. Following this, accelerated Au{sup 32+} and Fe{sup 20+} beams were transported to the Booster injection point, fulfilling DOE requirements for project completion.
Date:
September 12, 2010
Creator:
Alessi, J.; Beebe, E.; Binello, S.; Hoff, L.; Kondo, K.; Lambiase, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Demonstration of a 17 cm robust carbon fiber deformable mirror for adaptive optics
Carbon-fiber reinforced polymer (CFRP) composite is an attractive material for fabrication of optics due to its high stiffness-to-weight ratio, robustness, zero coefficient of thermal expansion (CTE), and the ability to replicate multiple optics from the same mandrel. We use 8 and 17 cm prototype CFRP thin-shell deformable mirrors to show that residual CTE variation may be addressed with mounted actuators for a variety of mirror sizes. We present measurements of surface quality at a range of temperatures characteristic of mountaintop observatories. For the 8 cm piece, the figure error of the Al-coated reflective surface under best actuator correction is {approx}43 nm RMS. The 8 cm mirror has a low surface error internal to the outer ring of actuators (17 nm RMS at 20 C and 33 nm RMS at -5 C). Surface roughness is low (< 3 nm P-V) at a variety of temperatures. We present new figure quality measurements of the larger 17 cm mirror, showing that the intra-actuator figure error internal to the outer ring of actuators (38 nm RMS surface with one-third the actuator density of the 8 cm mirror) does not scale sharply with mirror diameter.
Date:
September 12, 2011
Creator:
Ammons, S. M.; Hart, M.; Coughenour, B.; Romeo, R.; Martin, R. & Rademacher, M.
Object Type:
Article
System:
The UNT Digital Library
Accelerated Gibbs Sampling for Infinite Sparse Factor Analysis
The Indian Buffet Process (IBP) gives a probabilistic model of sparse binary matrices with an unbounded number of columns. This construct can be used, for example, to model a fixed numer of observed data points (rows) associated with an unknown number of latent features (columns). Markov Chain Monte Carlo (MCMC) methods are often used for IBP inference, and in this technical note, we provide a detailed review of the derivations of collapsed and accelerated Gibbs samplers for the linear-Gaussian infinite latent feature model. We also discuss and explain update equations for hyperparameter resampling in a 'full Bayesian' treatment and present a novel slice sampler capable of extending the accelerated Gibbs sampler to the case of infinite sparse factor analysis by allowing the use of real-valued latent features.
Date:
September 12, 2011
Creator:
Andrzejewski, D M
Object Type:
Report
System:
The UNT Digital Library
Daily Tribune (Mount Pleasant, Tex.), Vol. 140, No. 180, Ed. 1 Friday, September 12, 2014
Daily newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
September 12, 2014
Creator:
Antonelli, Lou & Borders, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
Gainesville Daily Register (Gainesville, Tex.), Vol. 128, No. 9, Ed. 1 Tuesday, September 12, 2017
Daily newspaper from Gainesville, Texas that includes local, state, and national news along with advertising.
Date:
September 12, 2017
Creator:
Armstrong, Mark J.
Object Type:
Newspaper
System:
The Portal to Texas History
Revisiting surface core-level shifts for ionic compounds
Article establishing a theoretical method which is able to relate the binding energy shifts to the electronic structure of a material. In order to establish such a methodology, the CaO(100) surface to bulk core-level binding energy shifts are studied with Hartree-Fock and density-functional theory methods using both cluster and periodic slab models.
Date:
September 12, 2019
Creator:
Bagus, Paul S.; Nelin, Connie J.; Zhao, Xunhua; Levchenko, Sergey V.; Davis, Earl; Weng, Xuefei et al.
Object Type:
Article
System:
The UNT Digital Library
Final Report - Summer Visit 2010
During my visit to LLNL during the summer of 2010, I worked on algebraic multilevel solvers for large sparse systems of linear equations arising from discretizations of partial differential equations. The particular solver of interest is based on ILU decomposition. The setup phase for this AMG solve is just the single ILU decomposition, and its corresponding error matrix. Because the ILU uses a minimum degree or similar sparse matrix ordering, most of the fill-in, and hence most of the error, is concentrated in the lower right corner of the factored matrix. All of the major multigrid components - the smoother, the coarse level correction matrices, and the fine-to-coarse and coarse-to-fine rectangular transfer matrices, are defined in terms of various blocks of the ILU factorization. Although such a strategy is not likely to be optimal in terms of convergence properties, it has a relatively low setup cost, and therefore is useful in situations where setup costs for more traditional AMG approaches cannot be amortized over the solution of many linear systems using the same matrix. Such a situation arises in adaptive methods, where often just one linear system is solved at each step of an adaptive feedback loop, or in solving …
Date:
September 12, 2011
Creator:
Bank, R
Object Type:
Report
System:
The UNT Digital Library
Site Environmental Report for 2011, Volumes 1& 2
The Site Environmental Report for 2011 summarizes Berkeley Lab’s environmental management performance, presents environmental monitoring results, and describes significant programs for calendar year (CY) 2011. Throughout this report, “Berkeley Lab” or “LBNL” refers both to (1) the multiprogram scientific facility the UC manages and operates on the 202-acre university-owned site located in the hills above the UC Berkeley campus, and the site itself, and (2) the UC as managing and operating contractor for Ernest Orlando Lawrence Berkeley National Laboratory. The report is separated into two volumes. Volume I is organized into an executive summary followed by six chapters that include an overview of LBNL, a discussion of its Environmental Management System (EMS), the status of environmental programs, summarized results from surveillance and monitoring activities, and quality assurance (QA) measures. Volume II contains individual data results from surveillance and monitoring activities.
Date:
September 12, 2012
Creator:
Baskin, David; Bauters, Tim; Borglin, Ned; Fox, Robert; Horst, Blair; Jelinski, John et al.
Object Type:
Report
System:
The UNT Digital Library
Experimental and Computational Preference for Phosphine Regioselectivity and Stereoselective Tripodal Rotation in Hos₃(Co)₈(PPh₃)₂(μ-1,2-N,Cη-¹,ᴋ¹-C₇H₄NS)
This article investigates the site preference for ligand substitution in the benzothiazolate-bridged cluster HOs₃(CO)₁₀(μ-1,2-N,Cη-¹,ᴋ¹-C₇H₄NS) using PPh₃.
Date:
September 12, 2018
Creator:
Begum, Shahin A.; Chowdhury, Md. Arshad H.; Ghosh, Shishir; Tocher, Derek A.; Richmond, Michael G.; Yang, Li et al.
Object Type:
Article
System:
The UNT Digital Library
FIELD-DEPLOYABLE SAMPLING TOOLS FOR SPENT NUCLEAR FUEL INTERROGATION IN LIQUID STORAGE
Methodology and field deployable tools (test kits) to analyze the chemical and microbiological condition of aqueous spent fuel storage basins and determine the oxide thickness on the spent fuel basin materials were developed to assess the corrosion potential of a basin. this assessment can then be used to determine the amount of time fuel has spent in a storage basin to ascertain if the operation of the reactor and storage basin is consistent with safeguard declarations or expectations and assist in evaluating general storage basin operations. The test kit was developed based on the identification of key physical, chemical and microbiological parameters identified using a review of the scientific and basin operations literature. The parameters were used to design bench scale test cells for additional corrosion analyses, and then tools were purchased to analyze the key parameters. The tools were used to characterize an active spent fuel basin, the Savannah River Site (SRS) L-Area basin. The sampling kit consisted of a total organic carbon analyzer, an YSI multiprobe, and a thickness probe. The tools were field tested to determine their ease of use, reliability, and determine the quality of data that each tool could provide. Characterization confirmed that the L …
Date:
September 12, 2012
Creator:
Berry, T.; Milliken, C.; Martinez-Rodriguez, M.; Hathcock, D. & Heitkamp, M.
Object Type:
Article
System:
The UNT Digital Library
Tax Gap: Should the 3% Withholding Requirement on Payments to Contractors by Government Be Repealed?
This reports discusses tax gaps and withholding, and concerns and legislation regarding these issues in the 112th Congress.
Date:
September 12, 2011
Creator:
Bickley, James M.
Object Type:
Report
System:
The UNT Digital Library
Tax Gap: Should the 3% Withholding Requirement on Payments to Contractors by Government Be Repealed?
This brief discusses the Joint Committee on Taxation (JCT) report titled Options to Improve Tax Compliance and Reform Tax Expenditures. The JCT report identified many options, including several to increase withholding.
Date:
September 12, 2011
Creator:
Bickley, James M.
Object Type:
Report
System:
The UNT Digital Library
Possible U.S. Intervention in Syria: Issues for Congress
This report discusses reports of a mass casualty chemical weapons attack in the suburbs of Damascus and the possible punitive U.S. military action against the Asad regime.
Date:
September 12, 2013
Creator:
Blanchard, Christopher M. & Sharp, Jeremy M.
Object Type:
Report
System:
The UNT Digital Library
The Leonard Graphic (Leonard, Tex.), Vol. 129, No. 36, Ed. 1 Thursday, September 12, 2019
Weekly newspaper from Leonard, Texas that includes local, state, and national news along with advertising.
Date:
September 12, 2019
Creator:
Blevins, Betsy
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 93, No. 182, Ed. 1 Thursday, September 12, 2013
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 12, 2013
Creator:
Bloom, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 94, No. 179, Ed. 1 Friday, September 12, 2014
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 12, 2014
Creator:
Bloom, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 97, No. 183, Ed. 1 Tuesday, September 12, 2017
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 12, 2017
Creator:
Bloom, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 98, No. 178, Ed. 1 Wednesday, September 12, 2018
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 12, 2018
Creator:
Bloom, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 99, No. 178, Ed. 1 Thursday, September 12, 2019
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 12, 2019
Creator:
Bloom, David
Object Type:
Newspaper
System:
The Portal to Texas History
OU Daily (Norman, Okla.), Vol. 101, No. 6, Ed. 1 Monday, September 12, 2016
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 12, 2016
Creator:
Branham, Dana
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, September 12, 2013
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 12, 2013
Creator:
Bright, James
Object Type:
Newspaper
System:
The Gateway to Oklahoma History