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Information Security: Continued Progress Needed to Strengthen Controls at the Internal Revenue Service (open access)

Information Security: Continued Progress Needed to Strengthen Controls at the Internal Revenue Service

A letter report issued by the Government Accountability Office with an abstract that begins "The Internal Revenue Service (IRS) has a demanding responsibility in collecting taxes, processing tax returns, and enforcing the nation's tax laws. It relies extensively on computerized systems to support its financial and mission-related operations. Effective information security controls are essential for ensuring that information is adequately protected from inadvertent or deliberate misuse, disruption, or destruction. As part of its audit of IRS's fiscal year 2005 financial statements, GAO assessed (1) the status of IRS's actions to correct or mitigate previously reported information security weaknesses at two sites and (2) whether controls over key financial and tax processing systems located at the facilities are effective in ensuring the confidentiality, integrity, and availability of financial and sensitive taxpayer data."
Date: March 23, 2006
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Materials Evaluation Test Series (METS) 04, 05, and 06 (open access)

Materials Evaluation Test Series (METS) 04, 05, and 06

The purpose of this work is to examine the environmental, safety, health and operational aspects of detonating a confined explosive test apparatus that has been designed to maximize the dynamics of impact on beryllium metal components for Contained Firing Facility (CFF) applications. A combination of experimental collection and evaluation methods were designed and implemented to provide an evaluation of immediately postdetonation by-products reflecting a potential worst-case scenario beryllium aerosolization explosive event. The collective Material Evaluation Test Series (METS) 04 - 06 provided explosive devices designed to scale for the dedicated METS firing tank that would provide a post-detonation internal environment comparable to the CFF. The experimental results provided appropriate information to develop operational parameters to be considered for conducting full-scale beryllium-containing experimental tests with similar designs within CFF and B801A. These operational procedures include the inclusion of chelating agents in pre-shot CFF cardboard containers with a minimum of 600 gallons content, an extended time period post-test before purging the CFF chamber, and an adaptation of approaches toward applications of the scrubber and HEPA systems during the post-shot sequence for an integrated environmental, safety, and health approach. In addition, re-entry and film retrieval procedures will be adapted, in line with abatement …
Date: March 23, 2006
Creator: Zalk, D.; Ingram, C.; Simmons, L.; Arganbright, R.; Lyle, J. & Wong, K.
Object Type: Report
System: The UNT Digital Library
Stark Tuning of Donor Electron Spins of Silicon (open access)

Stark Tuning of Donor Electron Spins of Silicon

We report Stark shift measurements for {sup 121}Sb donor electron spins in silicon using pulsed electron spin resonance. Interdigitated metal gates on top of a Sb-implanted {sup 28}Si epi-layer are used to apply electric fields. Two Stark effects are resolved: a decrease of the hyperfine coupling between electron and nuclear spins of the donor and a decrease in electron Zeeman g-factor. The hyperfine term prevails at X-band magnetic fields of 0.35T, while the g-factor term is expected to dominate at higher magnetic fields. A significant linear Stark effect is also resolved presumably arising from strain.
Date: March 23, 2006
Creator: Bradbury, Forrest R.; Tyryshkin, Alexei M.; Sabouret, Guillaume; Bokor, Jeff; Schenkel, Thomas & Lyon, Stephen A.
Object Type: Article
System: The UNT Digital Library
Influence of argon and oxygen on charge-state-resolved ion energydistributions of filtered aluminum arcs (open access)

Influence of argon and oxygen on charge-state-resolved ion energydistributions of filtered aluminum arcs

The charge-state-resolved ion energy distributions (IEDs) in filtered aluminum vacuum arc plasmas were measured and analyzed at different oxygen and argon pressures in the range 0.5 8.0 mTorr. A significant reduction of the ion energy was detected as the pressure was increased, most pronounced in an argon environment and for the higher charge states. The corresponding average charge state decreased from 1.87 to 1.0 with increasing pressure. The IEDs of all metal ions in oxygen were fitted with shifted Maxwellian distributions. The results show that it is possible to obtain a plasma composition with a narrow charge-state distribution as well as a narrow IED. These data may enable tailoring thin-film properties through selecting growth conditions that are characterized by predefined charge state and energy distributions.
Date: March 23, 2006
Creator: Rosen, Johanna; Anders, Andre; Mraz, Stanislav; Atiser, Adil & Schneider, Jochen M.
Object Type: Article
System: The UNT Digital Library
Nano-subgrain Strengthening in Ball-milled Iron (open access)

Nano-subgrain Strengthening in Ball-milled Iron

The strength and deformation behavior of ball-milled, iron-base materials containing nano-scale subgrains have been evaluated. As reported by several authors, nanosubgrains form during the early stages of ball milling as a result of severe plastic deformation inherent in the ball milling process. The strength for these nano-scale subgrains are compared with the strength of larger-scale subgrains in iron and iron-base alloys produced by traditional mechanical working. The data covers over 2 orders of magnitude in subgrain size (from 30 nm to 6 {micro}m) and shows a continuous pattern of behavior. For all materials studied, the strength varied as {lambda}{sup -1}, where {lambda} is the subgrain size. Strengthening from subgrains was found to breakdown at a much smaller subgrain size than strengthening from grains. In addition, the ball-milled materials showed significant strengthening contributions from nano-scale oxide particles. Shear bands are developed during testing of ball-milled materials containing ultra-fine subgrains. A model for shear band development in nano-scale subgrains during deformation has also been developed. The model predicts a strain state of uniaxial compression in the shear band with a strain of -1.24. Subgrains are shown to offer the opportunity for high strength and good work hardening with the absence of yield …
Date: March 23, 2006
Creator: Lesuer, D R; Syn, C K & Sherby, O D
Object Type: Article
System: The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 37, No. 81, Ed. 1 Thursday, March 23, 2006 (open access)

Greensheet (Houston, Tex.), Vol. 37, No. 81, Ed. 1 Thursday, March 23, 2006

Free weekly newspaper that includes business and classified advertising.
Date: March 23, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 80, Ed. 1 Thursday, March 23, 2006 (open access)

Greensheet (Houston, Tex.), Vol. 37, No. 80, Ed. 1 Thursday, March 23, 2006

Free weekly newspaper that includes business and classified advertising.
Date: March 23, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Port Aransas South Jetty (Port Aransas, Tex.), Vol. 36, No. 12, Ed. 1 Thursday, March 23, 2006 (open access)

Port Aransas South Jetty (Port Aransas, Tex.), Vol. 36, No. 12, Ed. 1 Thursday, March 23, 2006

Weekly newspaper from Port Aransas, Texas on Mustang Island that includes local, state and national news along with extensive advertising.
Date: March 23, 2006
Creator: Judson, Mary Henkel
Object Type: Newspaper
System: The Portal to Texas History
North Texas Daily (Denton, Tex.), Vol. 90, No. 89, Ed. 1 Thursday, March 23, 2006 (open access)

North Texas Daily (Denton, Tex.), Vol. 90, No. 89, Ed. 1 Thursday, March 23, 2006

Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date: March 23, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
State Securities Class Action Suits: Merrill Lynch, Pierce, Fenner & Smith, Inc. v. Dabit (open access)

State Securities Class Action Suits: Merrill Lynch, Pierce, Fenner & Smith, Inc. v. Dabit

None
Date: March 23, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The Wild and Scenic Rivers Act and Federal Water Rights (open access)

The Wild and Scenic Rivers Act and Federal Water Rights

This report discusses federal authority over water, and federal "reserved" and non-reserved water rights.
Date: March 23, 2006
Creator: Baldwin, Pamela
Object Type: Report
System: The UNT Digital Library
The Low-Income Home Energy Assistance Program (LIHEAP): Program and Funding (open access)

The Low-Income Home Energy Assistance Program (LIHEAP): Program and Funding

None
Date: March 23, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Campaign Finance Reform: Regulating Political Communications on the Internet (open access)

Campaign Finance Reform: Regulating Political Communications on the Internet

This report describes regulating political communications on the Internet related to Campaign Finance Reform.
Date: March 23, 2006
Creator: Whitaker, L. Paige
Object Type: Report
System: The UNT Digital Library
Community Development Block Grant Funds in Disaster Relief and Recovery (open access)

Community Development Block Grant Funds in Disaster Relief and Recovery

This report provides information about the Community Development Block Grant Funds in Disaster Relief and Recovery. Over the years, congress has appropriated supplemental CDBG funds supported recovery efforts in New York city.
Date: March 23, 2006
Creator: Boyd, Eugene
Object Type: Report
System: The UNT Digital Library

[TDNA Linage Report "A," February 2006]

Linage report from February 2006 that details ad revenue from Texas Daily Newspaper Association members.
Date: March 23, 2006
Creator: Texas Daily Newspaper Association
Object Type: Dataset
System: The UNT Digital Library
The Greensheet (Arlington-Grand Prairie, Tex.), Vol. 29, No. 346, Ed. 1 Thursday, March 23, 2006 (open access)

The Greensheet (Arlington-Grand Prairie, Tex.), Vol. 29, No. 346, Ed. 1 Thursday, March 23, 2006

Free weekly newspaper that includes business and classified advertising.
Date: March 23, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Structural health monitoring of wind turbine blades : SE 265 Final Project. (open access)

Structural health monitoring of wind turbine blades : SE 265 Final Project.

ACME Wind Turbine Corporation has contacted our dynamic analysis firm regarding structural health monitoring of their wind turbine blades. ACME has had several failures in previous years. Examples are shown in Figure 1. These failures have resulted in economic loss for the company due to down time of the turbines (lost revenue) and repair costs. Blade failures can occur in several modes, which may depend on the type of construction and load history. Cracking and delamination are some typical modes of blade failure. ACME warranties its turbines and wishes to decrease the number of blade failures they have to repair and replace. The company wishes to implement a real time structural health monitoring system in order to better understand when blade replacement is necessary. Because of warranty costs incurred to date, ACME is interested in either changing the warranty period for the blades in question or predicting imminent failure before it occurs. ACME's current practice is to increase the number of physical inspections when blades are approaching the end of their fatigue lives. Implementation of an in situ monitoring system would eliminate or greatly reduce the need for such physical inspections. Another benefit of such a monitoring system is that …
Date: March 23, 2006
Creator: Barkley, W. C. (Walter C.); Jacobs, Laura D.; Rutherford, A. C. (Amanda C.) & Puckett, Anthony
Object Type: Report
System: The UNT Digital Library
Prediction and observation of tin and silver plasmas with index of refraction greater than one in the soft X-ray range (open access)

Prediction and observation of tin and silver plasmas with index of refraction greater than one in the soft X-ray range

None
Date: March 23, 2006
Creator: Filevich, J.; Grava, J.; Purvis, M.; Marconi, M. C.; Rocca, J. J.; Nilsen, J. et al.
Object Type: Article
System: The UNT Digital Library
The Sorcerer II Global Ocean Sampling Expedition: Expanding the Universe of Protein Families (open access)

The Sorcerer II Global Ocean Sampling Expedition: Expanding the Universe of Protein Families

Metagenomics projects based on shotgun sequencing of populations of micro-organisms yield insight into protein families. We used sequence similarity clustering to explore proteins with a comprehensive dataset consisting of sequences from available databases together with 6.12 million proteins predicted from an assembly of 7.7 million Global Ocean Sampling (GOS) sequences. The GOS dataset covers nearly all known prokaryotic protein families. A total of 3,995 medium- and large-sized clusters consisting of only GOS sequences are identified, out of which 1,700 have no detectable homology to known families. The GOS-only clusters contain a higher than expected proportion of sequences of viral origin, thus reflecting a poor sampling of viral diversity until now. Protein domain distributions in the GOS dataset and current protein databases show distinct biases. Several protein domains that were previously categorized as kingdom specific are shown to have GOS examples in other kingdoms. About 6,000 sequences (ORFans) from the literature that heretofore lacked similarity to known proteins have matches in the GOS data. The GOS dataset is also used to improve remote homology detection. Overall, besides nearly doubling the number of current proteins, the predicted GOS proteins also add a great deal of diversity to known protein families and shed …
Date: March 23, 2006
Creator: Yooseph, Shibu; Sutton, Granger; Rusch, Douglas B.; Halpern, Aaron L.; Williamson, Shannon J.; Remington, Karin et al.
Object Type: Article
System: The UNT Digital Library
Effects of Natural Environmental Changes on Soil-Vapor Extraction Rates (open access)

Effects of Natural Environmental Changes on Soil-Vapor Extraction Rates

Remediation by soil-vapor extraction has been used for over a decade at Lawrence Livermore National Laboratory (LLNL). We have found that natural changes in environmental conditions affect the rate of soil-vapor extraction. Data on flow rate observations collected over this time are compared to in-situ measurements of several different environmental parameters (soil-gas pressure, soil-temperature, soil-moisture, Electrical Resistance Tomography (ERT), rainfall and barometric pressure). Environmental changes that lead to increased soil-moisture are associated with reduced soil-vapor extraction flow rates. We have found that the use of higher extraction vacuums combined with dual-phase extraction can help to increase pneumatic conductivity when vadose zone saturation is a problem. Daily changes in barometric pressure and soil-gas temperature were found to change flow rate measurements by as much as 10% over the course of a day.
Date: March 23, 2006
Creator: Martins, S. & Gregory, S.
Object Type: Article
System: The UNT Digital Library
Hybrid 320 Ton Off Highway Haul Truck: Quarterly Technical Status Report 13 (open access)

Hybrid 320 Ton Off Highway Haul Truck: Quarterly Technical Status Report 13

This thirteenth quarterly status report for the Hybrid Off Highway Vehicle (OHV) project, DOE Award DE-FC04-02AL68080 presents the project status at the end of December 2005, and covers activities in the thirteenth project quarter, October 2005 ? December 2005.
Date: March 23, 2006
Creator: Richter, Tim
Object Type: Report
System: The UNT Digital Library
Polk County Enterprise (Livingston, Tex.), Vol. 124, No. 24, Ed. 1 Thursday, March 23, 2006 (open access)

Polk County Enterprise (Livingston, Tex.), Vol. 124, No. 24, Ed. 1 Thursday, March 23, 2006

Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date: March 23, 2006
Creator: White, Barbara
Object Type: Newspaper
System: The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 47, Ed. 1 Thursday, March 23, 2006 (open access)

Comanche Chief (Comanche, Tex.), No. 47, Ed. 1 Thursday, March 23, 2006

Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date: March 23, 2006
Creator: Wilkerson, James C., III
Object Type: Newspaper
System: The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 21, No. 12, Ed. 1 Thursday, March 23, 2006 (open access)

Timpson & Tenaha News (Timpson, Tex.), Vol. 21, No. 12, Ed. 1 Thursday, March 23, 2006

Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date: March 23, 2006
Creator: Alexander, Nancy
Object Type: Newspaper
System: The Portal to Texas History