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Characterizing Change in Web Archiving

Description: This report attempts to define the characteristics and dimensions of change in web content
Date: August 27, 2004
Creator: Boyko, Andrew
Partner: International Internet Preservation Consortium
open access

Matching Shapes Using Local Descriptors

Description: We present a method for comparing shapes of grayscale images in noisy circumstances. By establishing correspondences in a new image with a shape model, we can estimate a transformation between the new region and the model. Using a cost function for deviations from the model, we can rank resulting shape matches. We compare two separate distinct region detectors: Scale Saliency and difference of gaussians. We show that this method is successful in comparing images of fluid mixing under anisotropi… more
Date: August 13, 2004
Creator: White, R; Newsam, S & Kamath, C
Partner: UNT Libraries Government Documents Department
open access

Feasibility Study on Using Two Mixer Pumps for Tank 241-AY-102 Waste Mixing

Description: The current waste retrieval plan at Hanford calls for using two mixer pumps to mix the waste stored in double-shell Tank 214-AY-102. The objective of this evaluation was to determine whether two rotating 300-hp mixer pumps placed 22 ft (6.7 m) off-center in the tank could adequately mix the AY-102 waste. The tank currently contains high-level waste that is 248 inches (6.3 m) deep, comprising 62 inches (1.58 m) of sludge and 186 inches (4.72 m) of supernatant liquid (Galbraith et al. 2002). Base… more
Date: August 30, 2004
Creator: Onishi, Yasuo & Wells, Beric E.
Partner: UNT Libraries Government Documents Department
open access

Groundwater Data Package for the 2004 Composite Analysis

Description: This report presents data and information that supports the groundwater module. The conceptual model of groundwater flow and transport at the Hanford Site is described and specific information applied in the numerical implementation module is provided.
Date: August 11, 2004
Creator: Thorne, Paul D.
Partner: UNT Libraries Government Documents Department
open access

Measurement of 150-Sm(n,2ngammai) 149-Sm cross sections between threshold and 20 MeV

Description: Absolute partial {gamma}-ray cross sections for the production of discrete {gamma}-rays from the reaction {sup 150}Sm(n,2n{gamma}{sub i}){sup 149}Sm were measured using the GEANIE {gamma}-ray spectrometer coupled with the intense white neutron source at WNR/LANSCE. The measurements were made for incident neutron energies between threshold (8.04 MeV) and 20 MeV. The partial cross sections for 21 {gamma}-rays were extracted from the data. Of these, 17 were compared to calculations performed using… more
Date: August 2, 2004
Creator: Cooper, J.; Becker, J.; Dashdorj, D.; Dietrich, F. S.; Garrett, P.; Hoffman, R. et al.
Partner: UNT Libraries Government Documents Department
open access

A Tutorial on Detection and Characterization of Special Behavior in Large Electric Power Systems

Description: The objective of this document is to report results in the detection and characterization of special behavior in large electric power systems. Such behavior is usually dynamic in nature, but not always. This is also true for the underlying sources of special behavior. At the device level, a source of special behavior might be an automatic control system, a dynamic load, or even a manual control system that is operated according to some sharply defined policy. Other possible sources include pass… more
Date: August 20, 2004
Creator: Hauer, John F. & DeSteese, John G.
Partner: UNT Libraries Government Documents Department
open access

Adaptive Torque Control of Variable Speed Wind Turbines

Description: The primary focus of this work is a new adaptive controller that is designed to resemble the standard non-adaptive controller used by the wind industry for variable speed wind turbines below rated power. This adaptive controller uses a simple, highly intuitive gain adaptation law designed to seek out the optimal gain for maximizing the turbine's energy capture. It is designed to work even in real, time-varying winds.
Date: August 1, 2004
Creator: Johnson, K. E.
Partner: UNT Libraries Government Documents Department
open access

Implementation of a Comprehensive On-Line Closed-Loop Diagnostic System for Roll-to-Roll Amorphous Silicon Solar Cell Production: Phase I Annual Report, 23 April 2003--31 August 2003

Description: This subcontract report describes how Energy Conversion Devices, Inc., has developed and built 7 generations of roll-to-roll amorphous silicon PV production equipment. In the ECD/United Solar production process, we deposit about a 1-mm-thick, 12-layer coating consisting of a metal/oxide backreflector, a 9-layer a-Si/a-SiGe alloy triple-junction solar cell, and top transparent conductive oxide coating onto 125-mm-thick, 35.5-cm-wide stainless-steel webs in a series of three roll-to-roll depositi… more
Date: August 1, 2004
Creator: Ellison, T.
Partner: UNT Libraries Government Documents Department
open access

Optimization of Phase-Engineered a-Si:H-Based Multi-Junction Solar Cells: Second Annual Technical Status Report, January 2003--January 2004

Description: This subcontract report entails investigation of engineering improvements in the performance and stability of solar cells in a systematic way. It consists of the following four tasks: Task 1-Materials research and device development; Task 2-Process improvement directed by real-time diagnostics; Task 3-Device loss mechanisms; and Task 4-Characterization strategies for advanced materials. The real-time spectroscopic ellipsometry (RTSE) multichamber is near completion, and trial depositions with a… more
Date: August 1, 2004
Creator: Wronski, C. R.; Collins, R. W.; Vlahos, V.; Pearce, J. M.; Deng, J.; Albert, M. et al.
Partner: UNT Libraries Government Documents Department
open access

Comparison of Two Different Wavelength Tuning Schemes in a Seeded High-Gain FEL

Description: In the following text we analyze and compare results of the two publications ([1], [2]), dedicated to development of the tunable high-gain Free Electron laser (FEL), seeded by an external source. As a conclusion we summarize similarities and differences between these concepts. This note is initiated by the polemics on the similarity of two different schemes of the wavelength tuning in a seeded high-gain FEL. Below we will be calling the scheme, presented by S. Biedron, S, Milton and H. Freund i… more
Date: August 4, 2004
Creator: Shaftan, T. & Yu, L. H.
Partner: UNT Libraries Government Documents Department
open access

Vadose Zone Hydrogeology Data Package for the 2004 Composite Analysis

Description: This document describes the geologic framework, the physical, hydrologic, and contaminant transport properties of the geologic materials, and deep drainage (i.e. recharge) estimates. Much of the data and interpreted information were extracted from existing documents and databases.
Date: August 12, 2004
Creator: Last, George V.; Freeman, Eugene J.; Cantrell, Kirk J.; Fayer, Michael J.; Gee, Glendon W.; Nichols, William E. et al.
Partner: UNT Libraries Government Documents Department
open access

Top Value Added Chemicals from Biomass: Volume I -- Results of Screening for Potential Candidates from Sugars and Synthesis Gas

Description: This report identifies twelve building block chemicals that can be produced from sugars via biological or chemical conversions. The twelve building blocks can be subsequently converted to a number of high-value bio-based chemicals or materials. Building block chemicals, as considered for this analysis, are molecules with multiple functional groups that possess the potential to be transformed into new families of useful molecules. The twelve sugar-based building blocks are 1,4-diacids (succinic,… more
Date: August 1, 2004
Creator: Werpy, T. & Petersen, G.
Partner: UNT Libraries Government Documents Department
open access

Turbine Research Program Cold Weather Turbine Project: Period of Performance May 27, 1999 -- March 31, 2004

Description: Northern Power Systems completed the Cold Weather Turbine (CWT) project, which was funded by the National Renewable Energy Laboratory (NREL), under subcontract XAT-9-29200-01. The project's primary goal is to develop a 100-kW wind turbine suited for deployment in remote villages in cold regions. The contract required testing and certification of the turbine to the International Electrotechnical Commission (IEC) 61400-1 international standard through Underwriters Laboratories (UL). The contract … more
Date: August 1, 2004
Creator: Lynch, J.; Bywaters, G.; Costin, D.; Hoskins, S.; Mattila, P. & Stowell, J.
Partner: UNT Libraries Government Documents Department
open access

A GUIDE TO FUEL PERFORMANCE

Description: Heating oil, as its name implies, is intended for end use heating consumption as its primary application. But its identity in reference name and actual chemical properties may vary based on a number of factors. By name, heating oil is sometimes referred to as gas oil, diesel, No. 2 distillate (middle distillate), or light heating oil. Kerosene, also used as a burner fuel, is a No. 1 distillate. Due to the higher heat content and competitive price in most markets, No. 2 heating oil is primarily … more
Date: August 1, 2004
Creator: LITZKE,W.
Partner: UNT Libraries Government Documents Department
open access

A Low-Cost, Real-Time Network for Radiological Monitoring Around Nuclear Facilities

Description: A low-cost, real-time radiological sensor network for emergency response has been developed and deployed at the Lawrence Livermore National Laboratory (LLNL). The Real-Time Radiological Area Monitoring (RTRAM) network is comprised of 16 Geiger-Mueller (GM) sensors positioned on the site perimeter to continuously monitor radiological conditions as part of LLNL's comprehensive environment/safety/health protection program. The RTRAM network sensor locations coincide with wind sector directions to … more
Date: August 13, 2004
Creator: Bertoldo, N A
Partner: UNT Libraries Government Documents Department
open access

Dangerous Waste Characteristics of Contact-Handled Transuranic Mixed Wastes from the Hanford Tanks

Description: This report summarizes existing analytical data from samples taken from the Hanford tanks designated as potentially containing transuranic mixed process wastes. Process knowledge of the wastes transferred to these tanks has been reviewed to determine whether the dangerous waste characteristics now assigned to all Hanford underground storage tanks are applicable to these particular wastes. Supplemental technologies are being examined to accelerate the Hanford tank waste cleanup mission and accom… more
Date: August 31, 2004
Creator: Tingey, Joel M.; Bryan, Garry H. & Deschane, Jaquetta R.
Partner: UNT Libraries Government Documents Department
open access

Kinetic and Modeling Investigation to Provide Design Guidelines for the NREL Dilute-Acid Process Aimed at Total Hydrolysis/Fractionation of Lignocellulosic Biomass: July 1998

Description: Following up on previous work, subcontractor investigated three aspects of using NREL ''pretreatment'' technology for total hydrolysis (cellulose as well as hemicellulose) of biomass. Whereas historic hydrolysis of biomass used either dilute acid or concentrated acid technology for hydrolysis of both hemicellulose and cellulose, NREL has been pursuing very dilute acid hydrolysis of hemicellulose followed by enzymatic hydrolysis of cellulose. NREL's countercurrent shrinking-bed reactor design fo… more
Date: August 1, 2004
Creator: Lee, Y. Y.; Iyer, P.; Xiang, Q. & Hayes, J.
Partner: UNT Libraries Government Documents Department
open access

Wind Tunnel Aeroacoustic Tests of Six Airfoils for Use on Small Wind Turbines; Period of Performance: August 23, 2002 through March 31, 2004

Description: The U.S. Department of Energy, working through the National Renewable Energy Laboratory, is engaged in a comprehensive research effort to improve our understanding of wind turbine aeroacoustics. Quiet wind turbines are an inducement to widespread deployment, so the goal of NREL's aeroacoustic research is to develop tools that the U.S. wind industry can use in developing and deploying highly efficient, quiet wind turbines at low wind speed sites. NREL's National Wind Technology Center is impleme… more
Date: August 1, 2004
Creator: Oerlemans, S.
Partner: UNT Libraries Government Documents Department
open access

Six-Degree-of-Freedom Sensor Fish Design: Governing Equations and Motion Modeling

Description: The Sensor Fish device is being used at Northwest hydropower projects to better understand the conditions fish experience during passage through hydroturbines and other dam bypass alternatives. Since its initial development in 1997, the Sensor Fish has undergone numerous design changes to improve its function and extend the range of its use. The most recent Sensor Fish design, the three degree of freedom (3DOF) device, has been used successfully to characterize the environment fish experience w… more
Date: August 19, 2004
Creator: Deng, Zhiqun; Richmond, Marshall C.; Simmons, Carver S. & Carlson, Thomas J.
Partner: UNT Libraries Government Documents Department
open access

Data vs Monte Carlo Comparison of NN1 Detector

Description: In this note, we demonstrate agreement between data and Geant4 simulations of the NN1 double-sided germanium detector using a {sup 22}Na source.
Date: August 2, 2004
Creator: Lange, D; Wright, D; Burks, M & Jordan, E
Partner: UNT Libraries Government Documents Department
open access

Measurements of an ARS DE204S Cryocooler's Thermal and Vibration Characteristics

Description: This document describes measurements that characterize an Advanced Research Systems DE204S cryocooler system. The data is relevant to the thermal performance and vibration characteristics of the cold-head. The thermal measurements include heat load mapping of the 1st and 2nd stage, and temperature fluctuation measurement of the 2nd stage heat station. A comparison of fluctuation measurements by four different sensors is also included to support the 2nd stage fluctuation results. Finally, optica… more
Date: August 24, 2004
Creator: Haid, B
Partner: UNT Libraries Government Documents Department
open access

Final Report - Gas Generation Testing of Uranium Metal in Simulated K Basin Sludge and in Grouted Sludge Waste Forms

Description: The Waste Isolation Pilot Plant (WIPP) is being considered for the disposal of K Basin sludge as RH-TRU. Because the hydrogen gas concentration in the 55-gallon RH-TRU sealed drums to be transported to WIPP is limited by flammability safety, the number of containers and shipments likely will be driven by the rate of hydrogen generated by the uranium metal-water reaction (U + 2 H{sub 2}O {yields} UO{sub 2} + 2 H{sub 2}) in combination with the hydrogen generated from water and organic radiolysis… more
Date: August 19, 2004
Creator: Delegard, Calvin H.; Schmidt, Andrew J.; Sell, Rachel L.; Sinkov, Sergei I.; Bryan, Samuel A.; Gano, Sue et al.
Partner: UNT Libraries Government Documents Department
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