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The Optimist (Abilene, Tex.), Vol. 99, No. 1, Ed. 1 Monday, August 23, 2010 (open access)

The Optimist (Abilene, Tex.), Vol. 99, No. 1, Ed. 1 Monday, August 23, 2010

Tri-weekly student newspaper from Abilene Christian University in Abilene, Texas that includes local, state and campus news along with advertising.
Date: August 23, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Texas Attorney General Opinion: GA-0789 (open access)

Texas Attorney General Opinion: GA-0789

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Whether a county’s disclosure on its website of driver’s license photographs received from the Department of Public Safety would violate the Motor Vehicle Records Disclosure Act of the federal Driver’s Privacy Protection Act (RQ-0799-GA)
Date: August 23, 2010
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: GA-0790 (open access)

Texas Attorney General Opinion: GA-0790

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Combining real property and improvements on one parcel identification number or taxpayer account for appraisal district record purposes (RQ-0827-GA)
Date: August 23, 2010
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: GA-0791 (open access)

Texas Attorney General Opinion: GA-0791

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Use ad management of a county jail commissary fund under Local Government Code section 351.0415 (RQ-0841-GA)
Date: August 23, 2010
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
SiC Power MOSFET with Improved Gate Dielectric (open access)

SiC Power MOSFET with Improved Gate Dielectric

In this STTR program, Structured Materials Industries (SMI), and Cornell University are developing novel gate oxide technology, as a critical enabler for silicon carbide (SiC) devices. SiC is a wide bandgap semiconductor material, with many unique properties. SiC devices are ideally suited for high-power, highvoltage, high-frequency, high-temperature and radiation resistant applications. The DOE has expressed interest in developing SiC devices for use in extreme environments, in high energy physics applications and in power generation. The development of transistors based on the Metal Oxide Semiconductor Field Effect Transistor (MOSFET) structure will be critical to these applications.
Date: August 23, 2010
Creator: Sbrockey, Nick M; Tompa, Gary S; Spencer, Michael G & Chandrashekhar, Chandra MVS
Object Type: Report
System: The UNT Digital Library
Preliminary study for the OFFELO (open access)

Preliminary study for the OFFELO

X-ray Optics-Free FEL Oscillator (OFFELO) has potential of becoming a choice for next generation light sources. Using electron beam for the feedback allows OFFELO to be completely tunable and to combine the peak power of high-gain SASE FELs with extremely narrow bandwidth of the oscillator. While the high-gain X-ray FELs has been studied in depth and has been successfully demonstrated, two other concepts (the transport and the feed-back) involved in OFFELO still need detail studies. In this short paper we focus on the simulation of the feedback process and the evolution of FEL spectrum in X-ray OFFELO. In our initial studies of OFFELO studied the saturation of the system and also its evolution using Genesis 2.0 code with a homemade wrapping code. While and lattice design from the modulator to the radiator, in order to minimize the feedback information loss in transporting the beam.
Date: August 23, 2010
Creator: Hao, Y. & Litvinenko, V. N.
Object Type: Article
System: The UNT Digital Library
Generating Ultrashort Coherent Soft X-ray Radiation in Storage Rings Using Angular-modulated Electron Beams (open access)

Generating Ultrashort Coherent Soft X-ray Radiation in Storage Rings Using Angular-modulated Electron Beams

A technique is proposed to generate ultrashort coherent soft x-ray radiation in storage rings using angular-modulated electron beams. In the scheme a laser operating in the TEM01 mode is first used to modulate the angular distribution of the electron beam in an undulator. After passing through a special beam line with non-zero transfer matrix element R{sub 54}, the angular modulation is converted to density modulation which contains considerable higher harmonic contents of the laser. It is found that the harmonic number can be one or two orders of magnitude higher than the standard coherent harmonic generation method which relies on beam energy modulation. The technique has the potential of generating femtosecond coherent soft x-ray radiation directly from an infrared seed laser and may open new research opportunities for ultrafast sciences in storage rings.
Date: August 23, 2010
Creator: Xiang, D. & Wan, W.
Object Type: Article
System: The UNT Digital Library
A 3-dimensional theory of free electron lasers (open access)

A 3-dimensional theory of free electron lasers

In this paper, we present an analytical three-dimensional theory of free electron lasers. Under several assumptions, we arrive at an integral equation similar to earlier work carried out by Ching, Kim and Xie, but using a formulation better suited for the initial value problem of Coherent Electron Cooling. We use this model in later papers to obtain analytical results for gain guiding, as well as to develop a complete model of Coherent Electron Cooling.
Date: August 23, 2010
Creator: Webb, S. D.; Wang, G. & Litvinenko, V. N.
Object Type: Article
System: The UNT Digital Library
Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power (open access)

Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power

Worldwide interest in the deployment of photovoltaic generation (PV) is rapidly increasing. Operating experience with large PV plants, however, demonstrates that large, rapid changes in the output of PV plants are possible. Early studies of PV grid impacts suggested that short-term variability could be a potential limiting factor in deploying PV. Many of these early studies, however, lacked high-quality data from multiple sites to assess the costs and impacts of increasing PV penetration. As is well known for wind, accounting for the potential for geographic diversity can significantly reduce the magnitude of extreme changes in aggregated PV output, the resources required to accommodate that variability, and the potential costs of managing variability. We use measured 1-min solar insolation for 23 time-synchronized sites in the Southern Great Plains network of the Atmospheric Radiation Measurement program and wind speed data from 10 sites in the same network to characterize the variability of PV with different degrees of geographic diversity and to compare the variability of PV to the variability of similarly sited wind. The relative aggregate variability of PV plants sited in a dense 10 x 10 array with 20 km spacing is six times less than the variability of a single …
Date: August 23, 2010
Creator: Mills, Andrew & Wiser, Ryan
Object Type: Report
System: The UNT Digital Library
Optimization of Dynamic Aperture of PEP-X Baseline Design (open access)

Optimization of Dynamic Aperture of PEP-X Baseline Design

SLAC is developing a long-range plan to transfer the evolving scientific programs at SSRL from the SPEAR3 light source to a much higher performing photon source. Storage ring design is one of the possibilities that would be housed in the 2.2-km PEP-II tunnel. The design goal of PEPX storage ring is to approach an optimal light source design with horizontal emittance less than 100 pm and vertical emittance of 8 pm to reach the diffraction limit of 1-{angstrom} x-ray. The low emittance design requires a lattice with strong focusing leading to high natural chromaticity and therefore to strong sextupoles. The latter caused reduction of dynamic aperture. The dynamic aperture requirement for horizontal injection at injection point is about 10 mm. In order to achieve the desired dynamic aperture the transverse non-linearity of PEP-X is studied. The program LEGO is used to simulate the particle motion. The technique of frequency map is used to analyze the nonlinear behavior. The effect of the non-linearity is tried to minimize at the given constrains of limited space. The details and results of dynamic aperture optimization are discussed in this paper.
Date: August 23, 2010
Creator: Wang, Min-Huey; Cai, Yunhai & Nosochkov, Yuri
Object Type: Article
System: The UNT Digital Library
Dispersion relations for 1D high-gain FELs (open access)

Dispersion relations for 1D high-gain FELs

We present analytical results for the one-dimensional dispersion relation for high-gain FELs. Using kappa-n distributions, we obtain analytical relations between the dispersion relations for various order kappa distributions. Since an exact solution exists for the kappa-1 (Lorentzian) distribution, this provides some insight into the number of modes on the way to the Gaussian distribution.
Date: August 23, 2010
Creator: Webb, S. D. & Litvinenko, V. N.
Object Type: Article
System: The UNT Digital Library
XFEL Oscillator Simulation Including Angle-Dependent Crystal Reflectivity (open access)

XFEL Oscillator Simulation Including Angle-Dependent Crystal Reflectivity

The oscillator package within the GINGER FEL simulation code has now been extended to include angle-dependent reflectivity properties of Bragg crystals. Previously, the package was modified to include frequencydependent reflectivity in order to model x-ray FEL oscillators from start-up from shot noise through to saturation. We present a summary of the algorithms used for modeling the crystal reflectivity and radiation propagation outside the undulator, discussing various numerical issues relevant to the domain of high Fresnel number and efficient Hankel transforms. We give some sample XFEL-O simulation results obtained with the angle-dependent reflectivity model, with particular attention directed to the longitudinal and transverse coherence of the radiation output.
Date: August 23, 2010
Creator: Fawley, William; Lindberg, Ryan; Kim, K. J. & Shvyd'ko, Yuri
Object Type: Article
System: The UNT Digital Library
Sweetwater Reporter (Sweetwater, Tex.), Vol. 112, No. 238, Ed. 1 Monday, August 23, 2010 (open access)

Sweetwater Reporter (Sweetwater, Tex.), Vol. 112, No. 238, Ed. 1 Monday, August 23, 2010

Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date: August 23, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Test of the Universality of Naive-time-reversal-odd Fragmentation Functions (open access)

Test of the Universality of Naive-time-reversal-odd Fragmentation Functions

We investigate the"spontaneous'' hyperon transverse polarization in e+e- annihilation and semi-inclusive deep inelastic scattering processes as a test of the universality of the naive-time-reversal-odd transverse momentum dependent fragmentation functions. We find that universality implies definite sign relations among various observables. This provides a unique opportunity to study initial/final state interaction effects in the fragmentation process and test the associated factorization.
Date: August 23, 2010
Creator: Boer, Daniel; Kang, Zhong-Bo; Vogelsang, Werner & Yuan, Feng
Object Type: Article
System: The UNT Digital Library
FEL potential of eRHIC (open access)

FEL potential of eRHIC

Brookhaven National Laboratory plans to build a 5-to-30 GeV energy-recovery linac (ERL) for its future electron-ion collider, eRHIC. In past few months, the Laboratory turned its attention to the potential of this unique machine for free electron lasers (FELS), which we initially assessed earlier. In this paper, we present our current vision of a possible FEL farm, and of narrow-band FEL-oscillators driven by this accelerator. eRHIC, the proposed electron-ion collider at BNL, takes advantage of the existing Relativistic Heavy Ion Collider (RHIC) complex. Plans call for adding a six-pass super-conducting (SRF) ERL to this complex to collide polarized- and unpolarized- electron beams with heavy ions (with energies up to 130 GeV per nucleon) and with polarized protons (with energies up to 325 GeV). RHIC, with a circumference of 3.834 km, has three-fold symmetry and six straight sections each {approx} 250 m long. Two of these straight sections will accommodate 703-MHz SRF linacs. The maximum energy of the electron beam in eRHIC will be reached in stages, from 5 GeV to 30 GeV, by increasing the lengths of its SRF linacs. We plan to install at the start the six-pass magnetic system with small gap magnets. The structure of the eRHIC's …
Date: August 23, 2010
Creator: Litvinenko, V. N.; Ben-Zvi, Ilan; Hao, Y.; Kao, C. C.; Kayran, D.; Murphy, J. B. et al.
Object Type: Article
System: The UNT Digital Library
Current Legal Status of the FCC’s Media Ownership Rules (open access)

Current Legal Status of the FCC’s Media Ownership Rules

This report discusses the Federal Communications Commission’s (FCC) media ownership regulations, which place limits on the number of broadcast radio and television outlets one owner can possess in a given market and place cross-ownership restrictions on these outlets and on the cross-ownership of broadcast properties and newspapers.
Date: August 23, 2010
Creator: Ruane, Kathleen A.
Object Type: Report
System: The UNT Digital Library
On the Mechanism of Anomalous Slip in BCC Metals (open access)

On the Mechanism of Anomalous Slip in BCC Metals

None
Date: August 23, 2010
Creator: Hsiung, L. L.
Object Type: Article
System: The UNT Digital Library
Federal Register, Volume 75, Number 162, August 23, 2010, Pages 51609-51916 (open access)

Federal Register, Volume 75, Number 162, August 23, 2010, Pages 51609-51916

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date: August 23, 2010
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Nuclear Power Plant Security and Vulnerabilities (open access)

Nuclear Power Plant Security and Vulnerabilities

This report discusses the physical security at nuclear power plants. The physical security of nuclear power plants and their vulnerability to deliberate acts of terrorism was elevated to a national security concern following the attacks of September 11, 2001. Since the attacks, Congress has repeatedly focused oversight and legislative attention on nuclear power plant security requirements established and enforced by the Nuclear Regulatory Commission (NRC).
Date: August 23, 2010
Creator: Holt, Mark & Andrews, Anthony
Object Type: Report
System: The UNT Digital Library
Supreme Court Nominations, 1789 - 2010: Actions by the Senate, the Judiciary Committee, and the President (open access)

Supreme Court Nominations, 1789 - 2010: Actions by the Senate, the Judiciary Committee, and the President

This report lists and describes actions taken by the Senate, the Senate Judiciary Committee, and the President on all Supreme Court nominations, from 1789 to the present.
Date: August 23, 2010
Creator: Rutkus, Denis Steven & Bearden, Maureen
Object Type: Report
System: The UNT Digital Library
Texas State Office of Risk Management Requests for Legislative Appropriations: Fiscal Years 2012 and 2013 (open access)

Texas State Office of Risk Management Requests for Legislative Appropriations: Fiscal Years 2012 and 2013

A legislative appropriation request for the biennium 2012-2013, in order to provide more effective claims administration and risk management services and ultimately result in savings to state agencies in the form of reduced workers' compensation claims and costs, reduced insurance purchases and improved insurance coverages, and more effective risk management programs.
Date: August 23, 2010
Creator: Texas. State Office of Risk Management.
Object Type: Book
System: The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 96, No. 5, Ed. 1 Monday, August 23, 2010 (open access)

The Oklahoma Daily (Norman, Okla.), Vol. 96, No. 5, Ed. 1 Monday, August 23, 2010

Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date: August 23, 2010
Creator: Moriak, Meredith
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, August 23, 2010 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Monday, August 23, 2010

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: August 23, 2010
Creator: Wray, Kelly
Object Type: Newspaper
System: The Gateway to Oklahoma History
Texas Commission on Environmental Quality Requests for Legislative Appropriations: Fiscal Years 2012 and 2013 (open access)

Texas Commission on Environmental Quality Requests for Legislative Appropriations: Fiscal Years 2012 and 2013

Report submitted by the Texas Commission on Environmental Quality containing background information on the commission, and summaries of requests for appropriations and expenditures for the fiscal years 2012 and 2013 with supporting documentation.
Date: August 23, 2010
Creator: Texas Commission on Environmental Quality
Object Type: Book
System: The Portal to Texas History