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A 4.2 GS/sec. Synchronized Vertical Excitation System for SPS Studies - Steps Toward Wideband Feedback
A 4.2 GS/sec. beam excitation system with accelerator synchronization and power stages is described. The system is capable of playing unique samples (32 samples/bunch) for 15,000 turns on selected bunch(es) in the SPS in syn- chronism with the injection and acceleration cycle. The purpose of the system is to excite internal modes of single-bunch vertical motion, and study the bunch dynamics in the presence of developing Electron cloud or TMCI effects. The system includes a synchronized master oscillator, SPS timing functions, an FPGA based arbitrary waveform generator, 4.2 GS/sec. D/A system and four 80W 20-1000 MHz amplifiers driving a tapered stripline pickup/kicker. A software GUI allows specification of various modulation signals, selection of bunches and turns to excite, while a remote control interface allows simple control/monitoring of the RF power stages located in the tunnel. The successful use of this system for SPS MD measurements in 2011 is a vital proof-of-principle for wideband feedback using similar functions to correct the beam motion.
Date:
July 10, 2012
Creator:
Fox, John
Object Type:
Article
System:
The UNT Digital Library
501(c)(4)s and the Gift Tax: Legal Analysis
This report discusses whether substantial donations to tax-exempt 501(c)(4) organizations are subject to the federal gift tax.
Date:
August 10, 2012
Creator:
Luckey, John R. & Lunder, Erika K.
Object Type:
Report
System:
The UNT Digital Library
2012 ELECTRON DONOR-ACCEPTOR INTERACTIONS GORDON RESEARCH CONFERENCE, AUGUST 5-10, 2012
The upcoming incarnation of the Gordon Research Conference on Electron Donor Acceptor Interactions will feature sessions on classic topics including proton-coupled electron transfer, dye-sensitized solar cells, and biological electron transfer, as well as emerging areas such as quantum coherence effects in donor-acceptor interactions, spintronics, and the application of donor-acceptor interactions in chemical synthesis.
Date:
August 10, 2012
Creator:
McCusker, James
Object Type:
Article
System:
The UNT Digital Library
2012 Farm Bill: Changing the Treatment of LIHEAP Receipt in the Calculation of SNAP Benefits
This report describes the contents of the 2012 Farm Bill, cost reducing measures in the Farm Bill, and the implications of both of these. Specifically, the report focuses on SNAP (Supplemental Nutrition Assistance Program) which is a cost saving measure that addresses how certain deductions from income will be calculated.
Date:
July 10, 2012
Creator:
Aussenberg, Randy Alison & Perl, Libby
Object Type:
Report
System:
The UNT Digital Library
2012 Molecular Basis of Microbial One-Carbon Metabolism Gordon Research Conferences and Gordon Research Seminar, August 4-10,2012
The 2012 Gordon Conference will present and discuss cutting-edge research in the field of microbial metabolism of C1 compounds. The conference will feature the roles and application of C1 metabolism in natural and synthetic systems at scales from molecules to ecosystems. The conference will stress molecular aspects of the unique metabolism exhibited by autotrophic bacteria, methanogens, methylotrophs, aerobic and anaerobic methanotrophs, and acetogens.
Date:
August 10, 2012
Creator:
Hanson, Thomas
Object Type:
Article
System:
The UNT Digital Library
2012 Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies
This Research is about Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies which presents a preliminary model of the three-dimensional seismic structure of the Iran region.
Date:
September 10, 2012
Creator:
Wetovsky, Marvin A.; Anderson, Dale; Arrowsmith, Stephen J.; Begnaud, Michael L.; Hartse, Hans E.; Maceira, Monica et al.
Object Type:
Article
System:
The UNT Digital Library
2012 PLANT CELL WALLS GORDON RESEARCH CONFERENCE AND GORDON RESEARCH SEMINAR, AUGUST 4-10, 2012
The sub-theme of this year’s meeting, ‘Cell Wall Research in a Post-Genome World’, will be a consideration of the dramatic technological changes that have occurred in the three years since the previous cell wall Gordon Conference in the area of DNA sequencing. New technologies are providing additional perspectives of plant cell wall biology across a rapidly growing number of species, highlighting a myriad of architectures, compositions, and functions in both "conventional" and specialized cell walls. This meeting will focus on addressing the knowledge gaps and technical challenges raised by such diversity, as well as our need to understand the underlying processes for critical applications such as crop improvement and bioenergy resource development.
Date:
August 10, 2012
Creator:
Rose, Jocelyn
Object Type:
Article
System:
The UNT Digital Library
2012 VIBRATIONAL SPECTROSCOPY GORDON RESEARCH CONFERENCE, AUGUST 5-10, 2012
The Vibrational Spectroscopy conference brings together experimentalists and theoreticians working at the frontiers of modern vibrational spectroscopy, with a special emphasis on spectroscopies that probe the structure and dynamics of molecules in gases, liquids, and at interfaces. The conference explores the wide range of state-of-the-art techniques based on vibrational motion. These techniques span the fields of time-domain, high-resolution frequency-domain, spatially-resolved, nonlinear, and multidimensional spectroscopies. The conference highlights both the application of these techniques in chemistry, materials, biology, the environment, and medicine as well as the development of theoretical models that enable one to connect spectroscopic signatures to underlying molecular motions including chemical reaction dynamics. The conference goal is to advance the field of vibrational spectroscopy by bringing together a collection of researchers who share common interests and who will gain from discussing work at the forefront of several connected areas. The intent is to emphasize the insights and understanding that studies of vibrations provide about a variety of molecular systems ranging from small polyatomic molecules to large biomolecules, nanomaterials, and environmental systems.
Date:
August 10, 2012
Creator:
Geiger, Franz
Object Type:
Article
System:
The UNT Digital Library
Accelerating a random forest classifier: multi-core, GP-GPU, or FPGA?
None
Date:
January 10, 2012
Creator:
Van Essen, B. C.; Macaraeg, C. C.; Prenger, R. & Gokhale, M.
Object Type:
Article
System:
The UNT Digital Library
Accelerating Atomic Orbital-based Electronic Structure Calculation via Pole Expansion plus Selected Inversion
We describe how to apply the recently developed pole expansion plus selected inversion (PEpSI) technique to Kohn-Sham density function theory (DFT) electronic structure calculations that are based on atomic orbital discretization. We give analytic expressions for evaluating charge density, total energy, Helmholtz free energy and atomic forces without using the eigenvalues and eigenvectors of the Kohn-Sham Hamiltonian. We also show how to update the chemical potential without using Kohn-Sham eigenvalues. The advantage of using PEpSI is that it has a much lower computational complexity than that associated with the matrix diagonalization procedure. We demonstrate the performance gain by comparing the timing of PEpSI with that of diagonalization on insulating and metallic nanotubes. For these quasi-1D systems, the complexity of PEpSI is linear with respect to the number of atoms. This linear scaling can be observed in our computational experiments when the number of atoms in a nanotube is larger than a few hundreds. Both the wall clock time and the memory requirement of PEpSI is modest. This makes it even possible to perform Kohn-Sham DFT calculations for 10,000-atom nanotubes on a single processor. We also show that the use of PEpSI does not lead to loss of accuracy required in …
Date:
February 10, 2012
Creator:
Lin, Lin; Chen, Mohan; Yang, Chao & He, Lixin
Object Type:
Article
System:
The UNT Digital Library
ACTUAL-WASTE TESTING OF ULTRAVIOLET LIGHT TO AUGMENT THE ENHANCED CHEMICAL CLEANING OF SRS SLUDGE
In support of Savannah River Site (SRS) tank closure efforts, the Savannah River National Laboratory (SRNL) conducted Real Waste Testing (RWT) to evaluate Enhanced Chemical Cleaning (ECC), an alternative to the baseline 8 wt% oxalic acid (OA) chemical cleaning technology for tank sludge heel removal. ECC utilizes a more dilute OA solution (2 wt%) and an oxalate destruction technology using ozonolysis with or without the application of ultraviolet (UV) light. SRNL conducted tests of the ECC process using actual SRS waste material from Tanks 5F and 12H. The previous phase of testing involved testing of all phases of the ECC process (sludge dissolution, OA decomposition, product evaporation, and deposition tank storage) but did not involve the use of UV light in OA decomposition. The new phase of testing documented in this report focused on the use of UV light to assist OA decomposition, but involved only the OA decomposition and deposition tank portions of the process. Compared with the previous testing at analogous conditions without UV light, OA decomposition with the use of UV light generally reduced time required to reach the target of <100 mg/L oxalate. This effect was the most pronounced during the initial part of the decomposition …
Date:
July 10, 2012
Creator:
Martino, C.; King, W. & Ketusky, E.
Object Type:
Report
System:
The UNT Digital Library
Advances in NIF Shock Timing Experiments
None
Date:
July 10, 2012
Creator:
Robey, H. F.; Celliers, P. M.; Moody, J. D. & MacKinnon, A. J.
Object Type:
Article
System:
The UNT Digital Library
Afghanistan Casualties: Military Forces and Civilians
This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001, and is ongoing. OEF actions take place primarily in Afghanistan; however, OEF casualties also include American casualties in Pakistan, Uzbekistan, Guantanamo Bay (Cuba), Djibouti, Eritrea, Ethiopia, Jordan, Kenya, Kyrgyzstan, the Philippines, Seychelles, Sudan, Tajikistan, Turkey, and Yemen.
Date:
May 10, 2012
Creator:
Chesser, Susan G.
Object Type:
Report
System:
The UNT Digital Library
[Agenda: The Dallas Way, July 10, 2012]
Agenda for the July 10th meeting of the Dallas Way listing the order of topics to discuss at the meeting.
Date:
July 10, 2012
Creator:
The Dallas Way
Object Type:
Text
System:
The UNT Digital Library
Agriculture and Related Agencies: FY2013 Appropriations
This report discusses the Agriculture appropriations bill—formally known as the Agriculture, Rural Development, Food and Drug Administration, and Related Agencies Appropriations Act, which provides funding for the following agencies: the U.S. Department of Agriculture (USDA), the Food and Drug Administration (FDA), the Commodity Futures Trading Commission (CFTC).
Date:
July 10, 2012
Creator:
Monke, Jim
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 136, No. 51, Ed. 1 Thursday, May 10, 2012
Weekly newspaper from Albany, Texas that includes local, state and national news along with advertising.
Date:
May 10, 2012
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Altus Times (Altus, Okla.), Vol. 112, No. 196, Ed. 1 Tuesday, January 10, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 10, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 218, Ed. 1 Friday, February 10, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 10, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 260, Ed. 1 Tuesday, April 10, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 10, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 279, Ed. 1 Thursday, May 10, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 10, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 7, Ed. 1 Sunday, June 10, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 10, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 28, Ed. 1 Tuesday, July 10, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 10, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 51, Ed. 1 Friday, August 10, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 10, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 94, Ed. 1 Wednesday, October 10, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 10, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History