546 Matching Results

Results open in a new window/tab.

Grid Independent Fuel Cell Operated Smart Home (GIFCOSH): Final Report (open access)

Grid Independent Fuel Cell Operated Smart Home (GIFCOSH): Final Report

A fuel cell power plant, which utilizes a smart energy management and control (SEMaC) system, supplying the power need of laboratory based ''home'' has been purchased and installed. The ''home'' consists of two rooms, each approximately 250 sq. ft. Every appliance and power outlet is under the control of a host computer, running the SEMaC software package. It is possible to override the computer, in the event that an appliance or power outage is required. Detailed analysis and simulation of the fuel cell operated smart home has been performed. Two journal papers has been accepted for publication and another journal paper is under review. Three theses have been completed and three additional theses are in progress.
Date: December 7, 2003
Creator: Alam, Mohammad S.
Object Type: Report
System: The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 18, No. 31, Ed. 1 Thursday, August 7, 2003 (open access)

Timpson & Tenaha News (Timpson, Tex.), Vol. 18, No. 31, Ed. 1 Thursday, August 7, 2003

Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date: August 7, 2003
Creator: Alexander, Nancy
Object Type: Newspaper
System: The Portal to Texas History
Developing improved structural materials using proton irradiation as a rapid analysis tool. (open access)

Developing improved structural materials using proton irradiation as a rapid analysis tool.

The overall goal of the project is to develop austenitic stainless steel structural materials with enhanced radiation resistance. For this project, the term radiation resistance is being used to describe resistance to dimensional changes caused by void swelling and resistance to material failures caused by irradiation assisted stress corrosion cracking (IASCC). IASCC has been linked to both hardening and changes in grain boundary composition during irradiation. To achieve such enhanced radiation resistance, three experimental paths have been chosen: bulk composition engineering, grain boundary composition engineering, and grain boundary structural engineering. The program involves the use of high-energy proton irradiation as a rapid screening tool to systematically test combinations of alloy composition and thermomechanical treatment conditions to isolate the controlling mechanisms and develop an understanding of how these factors can be engineered to improve material properties.
Date: October 7, 2003
Creator: Allen, T. R.; Cole, J. I.; Dropek, R.; Gan, J. & Was, G. S.
Object Type: Report
System: The UNT Digital Library
NK-1 Removable Cryogenic Shroud (A Study of the Bimba Pneumatic Cylinder) (open access)

NK-1 Removable Cryogenic Shroud (A Study of the Bimba Pneumatic Cylinder)

The Mark 1 Cryostat requires a cryogenic shroud that must be retracted immediately before firing the NIF laser. This paper evaluates a pneumatic cylinder that has been chosen to open and close the shroud. After a variety of motion control and vacuum compatibility experiments, we concluded that the Bimba feedback control cylinder may be used to retract the shroud with certain modifications to its control system and additional rod seals.
Date: February 7, 2003
Creator: Anderson, K & Stefanescu, D
Object Type: Report
System: The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 123, Ed. 1 Thursday, August 7, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 123, Ed. 1 Thursday, August 7, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: August 7, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 148, Ed. 1 Sunday, September 7, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 148, Ed. 1 Sunday, September 7, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: September 7, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 174, Ed. 1 Tuesday, October 7, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 174, Ed. 1 Tuesday, October 7, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: October 7, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 201, Ed. 1 Friday, November 7, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 201, Ed. 1 Friday, November 7, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: November 7, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 226, Ed. 1 Sunday, December 7, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 226, Ed. 1 Sunday, December 7, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: December 7, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Atmospheric Radiation Measurement Program Facilities Newsletter, July 2003. (open access)

Atmospheric Radiation Measurement Program Facilities Newsletter, July 2003.

Monthly newsletter discussing news and activities related to the Atmospheric Radiation Measurement Program, articles about weather and atmospheric phenomena, and other related topics.
Date: August 7, 2003
Creator: Atmospheric Radiation Measurement Program (U.S.)
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
DIRECT ENERGY CONVERSION FISSION REACTOR ANNUAL REPORT FOR THE PERIOD OCTOBER 1, 2001 THROUGH DECEMBER 31, 2002 (open access)

DIRECT ENERGY CONVERSION FISSION REACTOR ANNUAL REPORT FOR THE PERIOD OCTOBER 1, 2001 THROUGH DECEMBER 31, 2002

OAK-B135 DIRECT ENERGY CONVERSION FISSION REACTOR ANNUAL REPORT FOR THE PERIOD OCTOBER 1, 2001 THROUGH DECEMBER 31, 2002
Date: April 7, 2003
Creator: BROWN, L.C.
Object Type: Report
System: The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 32, No. 16, Ed. 1 Friday, February 7, 2003 (open access)

15th Street News (Midwest City, Okla.), Vol. 32, No. 16, Ed. 1 Friday, February 7, 2003

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: February 7, 2003
Creator: Baldwin, Alisha
Object Type: Newspaper
System: The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 32, No. 20, Ed. 1 Friday, March 7, 2003 (open access)

15th Street News (Midwest City, Okla.), Vol. 32, No. 20, Ed. 1 Friday, March 7, 2003

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: March 7, 2003
Creator: Baldwin, Alisha
Object Type: Newspaper
System: The Gateway to Oklahoma History
Highway Rights of Way on Public Lands: R.S. 2477 and Disclaimers of Interest (open access)

Highway Rights of Way on Public Lands: R.S. 2477 and Disclaimers of Interest

None
Date: November 7, 2003
Creator: Baldwin, Pamela
Object Type: Report
System: The UNT Digital Library
Oxygen Transport Ceramic Membranes (open access)

Oxygen Transport Ceramic Membranes

In the present quarter, experiments are presented on ceramic/metal interactions of Zirconia/ Ni-B-Si system and with a thin Ti coating deposited on zirconia surface. Existing facilities were modified for evaluation of environmental assisted slow crack growth and creep in flexural mode. Processing of perovskites of LSC, LSF and LSCF composition were continued for evaluation of mechanical properties as a function of environment. These studies in parallel to those on the LSFCO composition is expect to yield important information on questions such as the role of cation segregation and the stability of the perovskite structure on crack initiation vs. crack growth. Studies have been continued on the La{sub 1-x}Sr{sub x}FeO{sub 3-d} composition using neutron diffraction and TGA studies. A transition from p-type to n-type of conductor was observed at relative low pO{sub 2}, at which the majority carriers changed from the holes to electrons because of the valence state decreases in Fe due to the further loss of oxygen. Investigation on the thermodynamic properties of the membrane materials are continued to develop a complete model for the membrane transport. Data obtained at 850 C show that the stoichiometry in La{sub 0.2}Sr{sub 0.8}Fe{sub 0.8}Cr{sub 0.2}O{sub 3-x} vary from {approx}2.85 to 2.6 over …
Date: August 7, 2003
Creator: Bandopadhyay, S. & Nagabhushana, N.
Object Type: Report
System: The UNT Digital Library
SNAP Satellite Focal Plane Development (open access)

SNAP Satellite Focal Plane Development

The proposed SuperNova/Acceleration Probe (SNAP) mission will have a two-meter class telescope delivering diffraction-limited images to an instrumented 0.7 square degree field in the visible and near-infrared wavelength regime. The requirements for the instrument suite and the present configuration of the focal plane concept are presented. A two year R&D phase, largely supported by the Department of Energy, is just beginning. We describe the development activities that are taking place to advance our preparedness for mission proposal in the areas of detectors and electronics.
Date: July 7, 2003
Creator: Bebek, C.; Akerlof, C.; Aldering, G.; Amanullah, R.; Astier, P.; Baltay, C. et al.
Object Type: Article
System: The UNT Digital Library
Nuclear Nonproliferation Issues (open access)

Nuclear Nonproliferation Issues

None
Date: August 7, 2003
Creator: Behrens, Carl E.
Object Type: Report
System: The UNT Digital Library
Nuclear Nonproliferation Issues (open access)

Nuclear Nonproliferation Issues

None
Date: October 7, 2003
Creator: Behrens, Carl E.
Object Type: Report
System: The UNT Digital Library
Numerical Study of Instabilities Driven by Energetic Neutral Beam Ions in NSTX (open access)

Numerical Study of Instabilities Driven by Energetic Neutral Beam Ions in NSTX

Recent experimental observations from NSTX [National Spherical Torus Experiment] suggest that many modes in a subcyclotron frequency range are excited during neutral-beam injection (NBI). These modes have been identified as Compressional Alfven Eigenmodes (CAEs) and Global Alfven Eigenmodes (GAEs), which are driven unstable through the Doppler-shifted cyclotron resonance with the beam ions. The injection velocities of the NBI ions in NSTX are large compared to Alfven velocity, V(sub)0 > 3V(sub)A, and a strong anisotropy in the fast-ion pitch-angle distribution provides the energy source for the instabilities. Recent interest in the excitation of Alfven Eigenmodes in the frequency range omega less than or approximately equal to omega(sub)ci, where omega(sub)ci is the ion cyclotron frequency, is related to the possibility that these modes can provide a mechanism for direct energy transfer from super-Alfvenic beam ions to thermal ions. Numerical simulations are required in order to find a self-consistent mode structure, and to include the effects of finite-Larmor radius (FLR), the nonlinear effects, and the thermal plasma kinetic effects.
Date: July 7, 2003
Creator: Belova, E. V.; Gorelenkov, N. N.; Cheng, C. Z. & Fredrickson, E. D.
Object Type: Report
System: The UNT Digital Library
The Performance of Parallel Disk Write Methods for Linux Multiprocessor Nodes (open access)

The Performance of Parallel Disk Write Methods for Linux Multiprocessor Nodes

Despite increasing attention paid to parallel I/O and the introduction of MPI-IO, there is limited, practical data to help guide a programmer in the choice of a good parallel write strategy in the absence of a parallel file system. In this study we experimentally evaluate several methods for implementing parallel computations that interleave a significant number of contiguous or strided writes to a local disk on Linux-based multiprocessor nodes. Using synthetic benchmark programs written with MPI and Pthreads, we have acquired detailed performance data for different application characteristics of programs running on dual processor nodes. In general, our results show that programs that perform a significant amount of I/O relative to pure computation benefit greatly from the use of threads, while programs that perform relatively little I/O obtain excellent results using only MPI. For a pure MPI approach, we have found that it is best to use two writing processes with mmap(). For Pthreads it is usually best to use write() for contiguous data and writev() for strided data. Codes that use mmap() tend to benefit from periodic syncs of the data of the data to the disk, while codes that use write() or writev() tend to have better performance …
Date: May 7, 2003
Creator: Benson, G D; Long, K & Pacheco, P
Object Type: Article
System: The UNT Digital Library
The Rice Thresher, Vol. 91, No. 11, Ed. 1 Friday, November 7, 2003 (open access)

The Rice Thresher, Vol. 91, No. 11, Ed. 1 Friday, November 7, 2003

A weekly student newspaper from the Rice University in Houston, Texas that includes campus news and commentaries along with advertising.
Date: November 7, 2003
Creator: Berenson, Mark
Object Type: Newspaper
System: The Portal to Texas History
Observations concerning the quinol oxidation site of the cytochrome bc{sub 1} complex (open access)

Observations concerning the quinol oxidation site of the cytochrome bc{sub 1} complex

A direct hydrogen bond between ubiquinone/quinol bound at the QO site and a cluster-ligand histidine of the iron-sulfur protein (ISP) is described as a major determining factor explaining much experimental data on position of the ISP ectodomain, EPR lineshape and midpoint potential of the iron-sulfur cluster, and the mechanism of the bifurcated electron transfer from ubiquinol to the high and low potential chains of the bc1 complex.
Date: September 7, 2003
Creator: Berry, Edward A. & Huang, Li-Shar
Object Type: Article
System: The UNT Digital Library
Military Medical Care Services: Questions and Answers (open access)

Military Medical Care Services: Questions and Answers

None
Date: August 7, 2003
Creator: Best, Richard A., Jr.
Object Type: Report
System: The UNT Digital Library
House Conferees: Selection (open access)

House Conferees: Selection

A conference committee is composed of a House and a Senate delegation appointed to reconcile the differences between the versions of a measure passed by the two chambers. Congress usually uses a conference committee to resolve such disagreements on the more important, controversial, or complex measures. The members of each chamber’s delegation are known as its conferees or, more formally, “managers.” This report discusses how House conferees are selected.
Date: February 7, 2003
Creator: Beth, Richard S.
Object Type: Report
System: The UNT Digital Library