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NASA: Better Mechanisms Needed for Sharing Lessons Learned

Description: A chapter report issued by the General Accounting Office with an abstract that begins "The National Aeronautics and Space Administration (NASA) uses several mechanisms to capture and disseminate lessons learned. NASA has established an agency-wide Lessons Learned Information System that managers are required to review on an ongoing basis. NASA uses training, program reviews, and periodic revisions to agency policies and guidelines to communicate lessons learned. Several NASA centers and key pro… more
Date: January 30, 2002
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Time Reversal Signal Processing in Communications - A Feasibility Study

Description: A typical communications channel is subjected to a variety of signal distortions, including multipath, that corrupt the information being transmitted and reduce the effective channel capacity. The mitigation of the multipath interference component is an ongoing concern for communication systems operating in complex environments such as might be experienced inside buildings, urban environments, and hilly or heavily wooded areas. Communications between mobile units and distributed sensors, so imp… more
Date: January 30, 2002
Creator: Meyer, A W; Candy, J V & Poggio, A J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Sensor Technologies for Next-Generation Vehicles

Description: This report summarizes the development of automobile emissions sensors at Argonne National Laboratory. Three types of sensor technologies, i.e., ultrasound, microwave, and ion-mobility spectrometry (IMS), were evaluated for engine-out emissions monitoring. Two acoustic sensor technologies, i.e., surface acoustic wave and flexural plate wave, were evaluated for detection of hydrocarbons. The microwave technique involves a cavity design and measures the shifts in resonance frequency that are a re… more
Date: January 30, 2002
Creator: Sheen, S. H.; Chien, H. T.; Gopalsami, N.; Jendrzejczyk, A. & Raptis, A. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

INNOVATIVE METHODOLOGY FOR DETECTION OF FRACTURE-CONTROLLED SWEET SPOTS IN THE NORTHERN APPALACHIAN BASIN

Description: In the structure task, we completed reducing the data we had collected from a N-S transect on the east of Seneca Lake. We have calculated the fracture frequency for all the fracture sets at each site, and constructed modified rose diagrams that summarize the fracture attributes at each site. These data indicate a N-striking fault near the southeastern shore of Seneca Lake, and also indicate NE and ENE-trending FIDs and faults north of Valois. The orientation and existence of the ENE-striking FI… more
Date: January 30, 2002
Creator: Jacobi, Robert & Fountain, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Cuttings Transport Study Quarterly Technical Report: October-December 2001

Description: This is the second quarterly progress report for Year 3 of the ACTS project. It includes a review of progress made in: (1) Flow Loop development and (2) research tasks during the period of time between Oct 1, 2001 and Dec. 31, 2001. This report presents a review of progress on the following specific tasks: (a) Design and development of an Advanced Cuttings Transport Facility (Task 3: Addition of a Cuttings Injection/Collection System), (b) Research project (Task 6): ''Study of Cuttings Transpor… more
Date: January 30, 2002
Creator: Reed, Troy; Miska, Stefan; Takach, Nicholas; Ashenayi, Kaveh; Kane, Gerald; Pickell, Mark et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A users guide for the REBUS-PC code, version 1.4.

Description: The Reduced Enrichment Research and Test Reactor (RERTR) Program uses the REBUS-PC computer code to provide reactor physics and core design information such as neutron flux distributions in space, energy, and time, and to track isotopic changes in fuel and neutron absorbers with burnup. REBUS-PC has evolved away from the original REBUS code, which was created starting in the 1960's to study large liquid metal cooled fast breeder reactors. REBUS and REBUS-PC both model the external cycle, and ar… more
Date: January 30, 2002
Creator: Olson, A. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimization of Composition and Heat Treating of Die Steels for Extended Lifetime

Description: An ''average'' die casting die costs fifty thousand dollars. A die used in making die cast aluminum engine blocks can cost well over one million dollars. These costs provide a strong incentive for extension of die life. While vacuum quenched Premium Grade H13 dies have become the most widely used in the United States, tool makers and die casters are constantly searching for new steels and heat treating procedures to extend die life. This project was undertaken to investigate the effects of comp… more
Date: January 30, 2002
Creator: Schwam, David; Wallace, John F. & Zhou, Quanyou
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Non-Destructive Spent Fuel Characterization with Semi-Conducting Gallium Arsinde Neutron Imaging Arrays

Description: High resistivity bulk grown GaAs has been used to produce thermal neutron imaging devices for use in neutron radiography and characterizing burnup in spent fuel. The basic scheme utilizes a portable Sb/Be source for monoenergetic (24 keV) neutron radiation source coupled to an Fe filter with a radiation hard B-coated pixellated GaAs detector array as the primary neutron detector. The coated neutron detectors have been tested for efficiency and radiation hardness in order to determine their fitn… more
Date: January 30, 2002
Creator: McGregor, Douglas S.; Gersch, Holly K.; Sanders, Jeffrey D.; Lee, John C.; Hammig, Mark D.; Hartman, Michael R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development and Implementation of a Condition Based Maintenance Program for Geothermal Power Plants

Description: This report describes the development of the RCM team, identifying plant assets and developing an asset hierarchy, the development of sample Failure Mode Effects Analysis (FMEAs), identifying and prioritizing plant systems and components for RCM analysis, and identifying RCM/CBM software/hardware vendors. It also includes the Failure Mode Effects Analysis (FMEA) for all Class I Systems, Maintenance Task Assignments, use of Conditioned Based Maintenance (CBM) Tools and Displays of the RCM softwa… more
Date: January 30, 2002
Creator: Miller, Steve; Eddy, Jim; Grande, Murray; Bratt, Shawn & Shirmohamadi, Manuchehr
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

EPICS : input / output controller (IOC) application developer's guide. EPICS release 3.12 specific documentation.[Experimental Physics and Industrial Control System]

Description: This document describes the core software that resides in an Input/Output Controller (IOC), one of the major components of EPICS. EPICS consists of a set of software components and tools that Application Developers use to create a control system. The basic components are: OPI--Operator Interface. This is a UNIX based workstation which can run various EPICS tools; IOC--Input/Output Controller. This is a VME/VXI based chassis containing a processor, various I/O modules and VME modules that provid… more
Date: January 30, 2002
Creator: Kraimer, M. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LDRD Final Report for''Tactical Laser Weapons for Defense'' SI (Tracking Code 01-SI-011)

Description: The focus of this project was a convincing demonstration of two new technological approaches to high beam quality; high average power solid-state laser systems that would be of interest for tactical laser weapon applications. Two pathways had been identified to such systems that built on existing thin disk and fiber laser technologies. This SI was used as seed funding to further develop and vet these ideas. Significantly, the LLNL specific enhancements to these proposed technology paths were sp… more
Date: January 30, 2002
Creator: Beach, R & Zapata, L
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LDRD 99-ERI-010 Final Report: Sapphire: Scalable Pattern Recognition for Large-Scale Scientific Data Mining

Description: There is a rapidly widening gap between our ability to collect data and our ability to explore, analyze, and understand the data. As a result, useful information is overlooked, and the potential benefits of increased computational and data gathering capabilities only partially realized. This problem of data overload is becoming a serious impediment to scientific advancement in areas as diverse as counter-proliferation, the Accelerated Strategic Computing Initiative (ASCI), astrophysics, compute… more
Date: January 30, 2002
Creator: Kamath, C
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Susceptibility of Alloy 22 to Environmentally Assisted Cracking in Yucca Mountain Relevant Environments

Description: In its current design, the high level nuclear waste containers will include an external layer of Alloy 22 (Ni-22Cr-13Mo-3W-3Fe). Since over their life-time the containers may be exposed to multi-ionic aqueous environments, a potential degradation mode of the outer layer could be environmental assisted cracking (EAC). The objective of the current research work was to quantify the susceptibility of Alloy 22 to EAC in a several environmental conditions including solution composition, temperature a… more
Date: January 30, 2002
Creator: Estill, J. C.; King, K. J.; Fix, D. V.; Spurlock, D. G.; Hust, G. A.; Gordon, S. R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Creation of a Reference Image with Monte Carlo Simulations for Online EPID Verification of Daily Patient Setup

Description: Patient positioning accuracy remains an issue for external beam radiotherapy. Currently, kilovoltage verification images are used as reference by clinicians to compare the actual patient treatment position with the planned position. These images are qualitatively different from treatment-time megavoltage portal images. This study will investigate the feasibility of using PEREGRINE, a 3D Monte Carlo calculation engine, to create reference images for portal image comparisons. Portal images were a… more
Date: January 30, 2002
Creator: Descalle, M. A.; Chuang, C. & Pouliot, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Systematics of heavy quark production at RHIC

Description: We discuss a program for systematic studies of heavy quark production in pp, pA and AA interactions. The Q{ovr Q} production cross sections themselves cannot be accurately predicted to better than 50% at RHIC. For studies of deviations in Q{ovr Q} production such as those by nuclear shadowing and heavy quark energy loss, the pp cross-section thus needs to be measured. We then show that the ratio of pA to pp dilepton mass distributions can provide a measurement of the nuclear gluon distribution.… more
Date: January 30, 2002
Creator: Vogt, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Final report DOE project, ''Origins of asymmetric stress-strain response in phase transformations,'' DEFG02-93ER143993

Description: For the first time, experiments on NiTi under pressure loadings were conducted in Ref. (1). This work showed that the stress-strain response of NiTi is highly pressure sensitive and there was an asymmetry of tension and compression results. The results were obtained based on the special rig developed in (Ref. 2) by Sehitoglu and his students. Several experiments under pressure were also conducted on CuZnAl alloys with also pressure dependent response. accounted for variant-variant interaction a… more
Date: January 30, 2002
Creator: Sehitoglu, Huseyin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Global Climate Change

Description: This report briefly reviews the status of climate science, international negotiations, and congressional activity focused specifically on climate change.
Date: January 30, 2002
Creator: Justus, John R. & Fletcher, Susan R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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