49 Matching Results

Results open in a new window/tab.

Very Light Jets: Several Factors Could Influence Their Effect on the National Airspace System (open access)

Very Light Jets: Several Factors Could Influence Their Effect on the National Airspace System

A letter report issued by the Government Accountability Office with an abstract that begins "For several years, a number of aviation manufacturers have been designing and testing very light jets, a type of small jet aircraft equipped with advanced technologies and priced below other business jets. Aviation forecasters predict that thousands of very light jets will enter the National Airspace System (NAS) over the next two decades, contributing to the overall growth of the general aviation fleet. While some experts predict that very light jets will be used in ways that are similar to current general aviation aircraft, others predict that they will be used to expand the air taxi market to provide on-demand, point-to-point air transportation. In 2006, the Federal Aviation Administration (FAA) certified the first very light jets for flight. This report identifies (1) current very light jet forecasts and what factors could affect very light jet deliveries, (2) how increasing numbers of very light jets might affect the capacity and safety of the NAS, (3) how FAA is planning to accommodate the entry of very light jets into the NAS, and (4) how very light jets might affect FAA's costs and Airport and Airway Trust Fund revenues. …
Date: August 24, 2007
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Federal Housing Administration: Agency Should Assess the Effects of Proposed Changes to the Manufactured Home Loan Program (open access)

Federal Housing Administration: Agency Should Assess the Effects of Proposed Changes to the Manufactured Home Loan Program

A letter report issued by the Government Accountability Office with an abstract that begins "Pending legislation to the Federal Housing Administration's (FHA) Title I Manufactured Home Loan program would increase loan limits, insure each loan, incorporate stricter underwriting requirements, and set up-front premiums. GAO was asked to review (1) selected characteristics of manufactured housing and the demographics of the owners; (2) federal and state consumer protections for owners of manufactured homes; and (3) the potential benefits and costs of the proposed changes for borrowers and the federal government. In addressing these objectives, GAO analyzed select Census data; researched federal laws and laws in eight states; interviewed local, state, and federal officials; and analyzed various scenarios that might affect Title I program costs."
Date: August 24, 2007
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Testing Large CICC in Short Sample Configuration and Predicting Their Performance in Large Magnets (open access)

Testing Large CICC in Short Sample Configuration and Predicting Their Performance in Large Magnets

It is well known that large Nb3Sn Cable-in-Conduit Conductors (CICC) do not always completely utilize current carrying capacity of the strands they are made of. The modern state of theory is not accurate enough to eliminate CICC full scale testing. Measuring properties of large CICC is not a simple task due to variety of parameters that need to be controlled, like temperature, exposure of all the strands to the peak magnetic field, mass flow and particular nonuniform current distribution. The paper presents some measurement issues of CICC testing in a short sample test facility, particularly, conditions for uniform current distribution and effect of twist pitches on the critical current.
Date: August 24, 2007
Creator: Martovetsky, N. N.
Object Type: Article
System: The UNT Digital Library
Examples of the Zeroth Theorem of the History of Science (open access)

Examples of the Zeroth Theorem of the History of Science

The zeroth theorem of the history of science, enunciated byE. P. Fischer, states that a discovery (rule,regularity, insight) namedafter someone (often) did not originate with that person. I present fiveexamples from physics: the Lorentz condition partial muAmu = 0 definingthe Lorentz gauge of the electromagnetic potentials; the Dirac deltafunction, delta(x); the Schumann resonances of the earth-ionospherecavity; the Weizsacker-Williams method of virtual quanta; the BMTequation of spin dynamics. I give illustrated thumbnail sketches of boththe true and reputed discoverers and quote from their "discovery"publications.
Date: August 24, 2007
Creator: Jackson, J.D.
Object Type: Article
System: The UNT Digital Library
LLNL/Rochester 2007 TRIUMF activity (open access)

LLNL/Rochester 2007 TRIUMF activity

Bambino is a first generation auxiliary detector for the TIGRESS array and consists of a pair of segmented annular silicon detectors, fabricated by MicronSemiconductor Inc. Bambino provides measures of both the energy and position for outgoing charged particles and main triggers for valid events. The annular Bambino detectors are placed 3.0 cm from the target both upstream and downstream. Each detector has 24 rings in q covering angles between 20.1{sup o} and 49.4{sup o} and between 130.6{sup o} to 159.9{sup o}, with 16 sectors in {phi} for 2{pi} coverage. Two sets of preamplifiers, manufactured by SwanResearch, with the sensitivity of either 5 or 50 mV/MeV are available for experiments. A special scattering chamber to accommodate this detector array was designed and fabricated in FY06 by U. of Rochester. Bambino functioned very well for the first successful TIGRESS experiment on the Coulomb excitation of radioactive {sup 20}Na and {sup 21}Na beams in Jul/Aug 2006. Bambino underwent a major upgrade in FY07 at a cost of about $80 k to increase the position resolution. This is achieved by doubling the number of sector to 32 and will improve the in-flight reaction product {gamma}-ray spectroscopy resolution to about 1% or better for the …
Date: August 24, 2007
Creator: Wu, C; Becker, J; Hurst, A; Stoyer, M; Cline, D & Hayes, A
Object Type: Report
System: The UNT Digital Library
In-Situ observation of wet oxidation kinetics on Si (100) via ambient pressure x-ray photoemission spectroscopy (open access)

In-Situ observation of wet oxidation kinetics on Si (100) via ambient pressure x-ray photoemission spectroscopy

The initial stages of wet thermal oxidation of Si(100)-(2x1) have been investigated by in-situ ambient pressure x-ray photoemission spectroscopy (APXPS), including chemical-state resolution via Si 2p core-level spectra. Real-time growth rates of silicon dioxide have been monitored at 100 mTorr of water vapor. This pressure is considerably higher than in any prior study using XPS. Substrate temperatures have been varied between 250 and 500 C. Above a temperature of {approx} 400 C, two distinct regimes, a rapid and a quasi-saturated one, are identified and growth rates show a strong temperature dependence which cannot be explained by the conventional Deal-Grove model.
Date: August 24, 2007
Creator: Hussain, Zahid; Rossi, Massimiliano; Mun, Bongjin S.; Enta, Yoshiharu; Fadley, Charles S.; Lee, Ki-Suk et al.
Object Type: Article
System: The UNT Digital Library
Searching for plasmas with anomalous dispersion in the soft X-ray regime (open access)

Searching for plasmas with anomalous dispersion in the soft X-ray regime

Over the last decade the electron density of plasmas has been measured using X-ray laser interferometers in the 14 to 47 nm wavelength regime. With the same formula used in decades of experiments with optical interferometers, the data analysis assumes the index of refraction is due only to the free electrons, which makes the index less than one. Over the last several years, interferometer experiments in C, Al, Ag, and Sn plasmas have observed plasmas with index of refraction greater than one at 14 or 47 nm and demonstrated unequivocally that the usual formula for calculating the index of refraction is not always valid as the contribution from bound electrons can dominate the free electrons in certain cases. In this paper we search for other materials with strong anomalous dispersion that could be used in X-ray laser interferometer experiments to help understand this phenomena. An average atom code is used to calculate the plasma properties. This paper discusses the calculations of anomalous dispersion in Ne and Na plasmas near 47 nm and Xe plasmas near 14 nm. With the advent of the FLASH X-ray free electron laser in Germany and the LCLS X-FEL coming online at Stanford in 2 years …
Date: August 24, 2007
Creator: Nilsen, J; Johnson, W R & Cheng, K T
Object Type: Article
System: The UNT Digital Library
Assessment of the HV-C2 Stack Sampling Probe Location (open access)

Assessment of the HV-C2 Stack Sampling Probe Location

Tests were performed to evaluate the location of the air-sampling probe in the proposed design for the Waste Treatment Plant’s HV-C2 air exhaust stack. The evaluation criteria come from ANSI/HPS N13.1-1999, “Sampling and Monitoring Releases of Airborne Radioactive Substances from the Stacks and Ducts of Nuclear Facilities.” Pacific Northwest National Laboratory conducted the tests on a 3.67:1 scale model of the stack. Limited confirmatory tests on the actual stack will need to be conducted during cold startup of the High Level Waste Treatment Facility. The tests documented here assessed the capability of the air-monitoring probe to extract a sample representative of the effluent stream in accordance with criteria in ANSI/HPS N13.1. The test parameters covered the expected range of system flowrates with both one and two operating fans. The current stack design calls for the sampling probe to be located about 10 diameters downstream of the junction of the duct from Fan A with the stack. In accordance with the statement of work and the test plan, the test measurements were made at that location and also at one point upstream and another downstream. An adjustment was made for the distance between a typical sampling probe inlet and the centerline …
Date: August 24, 2007
Creator: Glissmeyer, John A. & Droppo, James G.
Object Type: Report
System: The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 38, No. 346, Ed. 1 Friday, August 24, 2007 (open access)

Greensheet (Houston, Tex.), Vol. 38, No. 346, Ed. 1 Friday, August 24, 2007

Free weekly newspaper that includes business and classified advertising.
Date: August 24, 2007
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 38, No. 348, Ed. 1 Friday, August 24, 2007 (open access)

Greensheet (Houston, Tex.), Vol. 38, No. 348, Ed. 1 Friday, August 24, 2007

Free weekly newspaper that includes business and classified advertising.
Date: August 24, 2007
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 24, No. 15, Ed. 1 Friday, August 24, 2007 (open access)

Dallas Voice (Dallas, Tex.), Vol. 24, No. 15, Ed. 1 Friday, August 24, 2007

Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date: August 24, 2007
Creator: Nash, Tammye
Object Type: Newspaper
System: The UNT Digital Library
Texas Attorney General Opinion: GA-0565 (open access)

Texas Attorney General Opinion: GA-0565

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: Proper calculation of the fee that a campaign manager may charge to a charitable organization for services rendered in connection with the state employee charitable campaign (RQ-0574-GA)
Date: August 24, 2007
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Noise Abatement and Control: The Federal Role (open access)

Noise Abatement and Control: The Federal Role

None
Date: August 24, 2007
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Water Resources Development Act (WRDA): Corps of Engineers Project Authorization Issues (open access)

Water Resources Development Act (WRDA): Corps of Engineers Project Authorization Issues

None
Date: August 24, 2007
Creator: unknown
Object Type: Report
System: The UNT Digital Library
[History of TSDC Meetings] (open access)

[History of TSDC Meetings]

History of Texas Stonewall Democratic Caucus meetings from April 2004 to March 2007, discussing proposed amendments and changes to the bylaws of the TSDC organization.
Date: August 24, 2007
Creator: unknown
Object Type: Text
System: The UNT Digital Library
[Texas Stonewall Democratic Caucus 2006-2008 Executive Committee] (open access)

[Texas Stonewall Democratic Caucus 2006-2008 Executive Committee]

Texas Stonewall Democratic Caucus 2006 through 2008 Executive Committee list of contact information, club information, and website links.
Date: August 24, 2007
Creator: unknown
Object Type: Text
System: The UNT Digital Library
[Texas Stonewall Democratic Caucus 2006-2008 Executive Committee] (open access)

[Texas Stonewall Democratic Caucus 2006-2008 Executive Committee]

Texas Stonewall Democratic Caucus 2006 through 2008 Executive Committee list of contact information, club information, and website links.
Date: August 24, 2007
Creator: unknown
Object Type: Text
System: The UNT Digital Library
[Texas Stonewall Democratic Caucus 2006-2008 Executive Committee] (open access)

[Texas Stonewall Democratic Caucus 2006-2008 Executive Committee]

Texas Stonewall Democratic Caucus 2006 through 2008 Executive Committee list of contact information, club information, and website links.
Date: August 24, 2007
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 38, No. 347, Ed. 1 Friday, August 24, 2007 (open access)

Greensheet (Houston, Tex.), Vol. 38, No. 347, Ed. 1 Friday, August 24, 2007

Free weekly newspaper that includes business and classified advertising.
Date: August 24, 2007
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Baseline Environmental Analysis Report for the K-1251 Barge Facility at the East Tennessee Technology Park, Oak Ridge, Tennessee (open access)

Baseline Environmental Analysis Report for the K-1251 Barge Facility at the East Tennessee Technology Park, Oak Ridge, Tennessee

This report documents the baseline environmental conditions of the U. S. Department of Energy's (DOE's) K-1251 Barge Facility, which is located at the East Tennessee Technology Park (ETTP). DOE is proposing to lease the facility to the Community Reuse Organization of East Tennessee (CROET). This report provides supporting information for the use, by a potential lessee, of government-owned facilities at ETTP. This report is based upon the requirements of Sect. 120(h) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA). The lease footprint is slightly over 1 acre. The majority of the lease footprint is defined by a perimeter fence that surrounds a gravel-covered area with a small concrete pad within it. Also included is a gravel drive with locked gates at each end that extends on the east side to South First Avenue, providing access to the facility. The facility is located along the Clinch River and an inlet of the river that forms its southern boundary. To the east, west, and north, the lease footprint is surrounded by DOE property. Preparation of this report included the review of government records, title documents, historic aerial photos, visual and physical inspections of the property and adjacent properties, …
Date: August 24, 2007
Creator: J.E., Van Winkle
Object Type: Report
System: The UNT Digital Library
How Long is the SLAC Gallery? (open access)

How Long is the SLAC Gallery?

How long is the gallery? Since the two methods of observation have similar accuracy and in the interest of keeping it simple, AEG averaged the two methods and determined that the length of the Gallery is 3073.72m.
Date: August 24, 2007
Creator: Imfeld, Hans
Object Type: Report
System: The UNT Digital Library
"Violent Intent Modeling: Incorporating Cultural Knowledge into the Analytical Process (open access)

"Violent Intent Modeling: Incorporating Cultural Knowledge into the Analytical Process

While culture has a significant effect on the appropriate interpretation of textual data, the incorporation of cultural considerations into data transformations has not been systematic. Recognizing that the successful prevention of terrorist activities could hinge on the knowledge of the subcultures, Anthropologist and DHS intern Faith Nibbs has been addressing the need to incorporate cultural knowledge into the analytical process. In this Brown Bag she will present how cultural ideology is being used to understand how the rhetoric of group leaders influences the likelihood of their constituents to engage in violent or radicalized behavior, and how violent intent modeling can benefit from understanding that process.
Date: August 24, 2007
Creator: Sanfilippo, Antonio P. & Nibbs, Faith G.
Object Type: Report
System: The UNT Digital Library
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 51, No. 203, Ed. 1 Friday, August 24, 2007 (open access)

Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 51, No. 203, Ed. 1 Friday, August 24, 2007

Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date: August 24, 2007
Creator: Morrell, Donna
Object Type: Newspaper
System: The Portal to Texas History
Estate and Gift Tax Revenues: Past and Projected (open access)

Estate and Gift Tax Revenues: Past and Projected

None
Date: August 24, 2007
Creator: Noto, Nonna A.
Object Type: Report
System: The UNT Digital Library