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Developing Poultry Facility Type Information from USDA Agricultural Census Data for Use in Epidemiological and Economic Models

Description: The epidemiological and economic modeling of poultry diseases requires knowing the size, location, and operational type of each poultry type operation within the US. At the present time, the only national database of poultry operations that is available to the general public is the USDA's 2002 Agricultural Census data, published by the National Agricultural Statistics Service, herein referred to as the 'NASS data'. The NASS data provides census data at the county level on poultry operations for… more
Date: December 5, 2007
Creator: Melius, C
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Local Two-Photon Couplings and the J=0 Fixed Pole in Real and Virtual Compton Scattering

Description: The local coupling of two photons to the fundamental quark currents of a hadron gives an energy-independent contribution to the Compton amplitude proportional to the charge squared of the struck quark, a contribution which has no analog in hadron scattering reactions. We show that this local contribution has a real phase and is universal, giving the same contribution for real or virtual Compton scattering for any photon virtuality and skewness at fixed momentum transfer squared t. The t-depende… more
Date: December 5, 2008
Creator: Brodsky, Stanley J.; Llanes-Estrada, Felipe J. & Szczepaniak, Adam P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Combining evidence from several samples for testing goodness-of-fit to a location-scale family. Technical report No. 15

Description: Consider the problem of testing goodness-of-fit to a specified location-scale family when evidence is to be combined from several independent samples, from populations with possibly different location and scale parameters. The procedure studied is that of computing standardized residuals from each sample and then combining these into one set to be treated essentially as though they came from one sample. It is shown that the limiting distribution of any location-scale invariant goodness-of-fit s… more
Date: June 5, 1978
Creator: Pierce, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Monte Carlo simulation of the microcanonical ensemble

Description: We consider simulating statistical systems with a random walk on a constant energy surface. This combines features of deterministic molecular dynamics techniques and conventional Monte Carlo simulations. For discrete systems the method can be programmed to run an order of magnitude faster than other approaches. It does not require high quality random numbers and may also be useful for nonequilibrium studies. 10 references.
Date: April 5, 1984
Creator: Creutz, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Addressing Problems with Scene-Based Wave Front Sensing

Description: Scene-Based Wave Front Sensing uses the correlation between successive subimages to determine phase aberrations which blur digital images. Adaptive Optics technology uses deformable mirrors to correct for these phase aberrations and make the images clearer. The correlation between temporal subimages gives tip-tilt information. If these images do not have identical image content, tip-tilt estimations may be incorrect. Motion detection is necessary to help avoid errors initiated by dynamic subima… more
Date: August 5, 2003
Creator: Chan, C
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

U.S. Military Casualty Statistics: Operation New Dawn, Operation Iraqi Freedom, and Operation Enduring Freedom

Description: This report presents statistics regarding U.S. military casualties in the active Operation Enduring Freedom (OEF, Afghanistan), as well as operations that have ended: Operation New Dawn (OND, Iraq) and Operation Iraqi Freedom (OIF, Iraq). This report includes statistics on post-traumatic stress disorder (PTSD), traumatic brain injury (TBI), amputations, evacuations, and the demographics of casualties.
Date: February 5, 2013
Creator: Fischer, Hannah
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuisance Source Population Modeling for Radiation Detection System Analysis

Description: A major challenge facing the prospective deployment of radiation detection systems for homeland security applications is the discrimination of radiological or nuclear 'threat sources' from radioactive, but benign, 'nuisance sources'. Common examples of such nuisance sources include naturally occurring radioactive material (NORM), medical patients who have received radioactive drugs for either diagnostics or treatment, and industrial sources. A sensitive detector that cannot distinguish between … more
Date: October 5, 2009
Creator: Sokkappa, P; Lange, D; Nelson, K & Wheeler, R
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

TOTAL MEASUREMENT UNCERTAINTY IN HOLDUP MEASUREMENTS AT THE PLUTONIUM FINISHING PLANT (PFP)

Description: An approach to determine the total measurement uncertainty (TMU) associated with Generalized Geometry Holdup (GGH) [1,2,3] measurements was developed and implemented in 2004 and 2005 [4]. This paper describes a condensed version of the TMU calculational model, including recent developments. Recent modifications to the TMU calculation model include a change in the attenuation uncertainty, clarifying the definition of the forward background uncertainty, reducing conservatism in the random uncerta… more
Date: July 5, 2007
Creator: Keele, B. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Constraining the Evolution of the Ionizing Background and the Epoch of Reionization with z~6 Quasars II: A Sample of 19 Quasars

Description: We study the evolution of the ionization state of the intergalactic medium (IGM) at the end of the reionization epoch using moderate resolution spectra of a sample of nineteen quasars at 5.74 < z{sub em} < 6.42 discovered in the Sloan Digital Sky Survey. Three methods are used to trace IGM properties: (a) the evolution of the Gunn-Peterson (GP) optical depth in the Ly{alpha}, {beta}, and {gamma} transitions; (b) the distribution of lengths of dark absorption gaps, and (c) the size of HII … more
Date: January 5, 2006
Creator: Fan, X; Strauss, M A; Becker, R H; White, R L; Gunn, J E; Knapp, G R et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

1995 NPTS Databook

Description: Policymakers rely on transportation statistics, including data on personal travel behavior, to formulate strategic transportation policies and to improve the safety and efficiency of the U.S. transportation system. Data on personal travel trends are needed to examine the reliability, efficiency, capacity, and flexibility of the Nation's transportation system to meet current demands and accommodate future demands; to assess the feasibility and efficiency of alternative congestion-alleviating tec… more
Date: December 5, 2001
Creator: Hu, P. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploitation of parallelism in climate models. Final report

Description: This final report includes details on the research accomplished by the grant entitled 'Exploitation of Parallelism in Climate Models' to the University of Maryland. The purpose of the grant was to shed light on (a) how to reconfigure the atmospheric prediction equations such that the time iteration process could be compressed by use of MPP architecture; (b) how to develop local subgrid scale models which can provide time and space dependent parameterization for a state-of-the-art climate model … more
Date: February 5, 2001
Creator: Baer, Ferdinand; Tribbia, Joseph J. & Williamson, David L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Methods for testing transport models. [Departments of Nuclear Engineering and Statistics, Univ. of Illinois at Urbana[endash]Champaign]

Description: This report documents progress to date under a three-year contract for developing Methods for Testing Transport Models.'' The work described includes (1) choice of best methods for producing code emulators'' for analysis of very large global energy confinement databases, (2) recent applications of stratified regressions for treating individual measurement errors as well as calibration/modeling errors randomly distributed across various tokamaks, (3) Bayesian methods for utilizing prior informat… more
Date: January 5, 1993
Creator: Singer, C. & Cox, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

X-Ray Dose and Spot Size Calculations for the DARHT-II Distributed Target

Description: The baseline DARHT-II converter target consists of foamed tantalum within a solid-density cylindrical tamper. The baseline design has been modified by D. Ho to further optimize the integrated line density of material in the course of multiple beam pulses. LASNEX simulations of the hydrodynamic expansion of the target have been performed by D. Ho (documented elsewhere). The resulting density profiles have been used as inputs in the MCNP radiation transport code to calculate the X-ray dose and sp… more
Date: April 5, 2001
Creator: McCarrick, J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Actinic Mask Inspection at the ALS Initial Design Review

Description: This report is the first milestone report for the actinic mask blank inspection project conducted at the VNL, which forms sub-section 3 of the Q1 2003 mask blank technology transfer program at the VNL. Specifically this report addresses deliverable 3.1.1--design review and preliminary tool design. The goal of this project is to design an actinic mask inspection tool capable of operating in two modes: high-speed scanning for the detection of multilayer defects (inspection mode), and a high-resol… more
Date: March 5, 2003
Creator: Barty, A.; Chapman, H.; Sweeney, D.; Levesque, R.; Bokor, J.; Gullikson, E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Systematic error revisited

Description: The American National Standards Institute (ANSI) defines systematic error as An error which remains constant over replicative measurements. It would seem from the ANSI definition that a systematic error is not really an error at all; it is merely a failure to calibrate the measurement system properly because if error is constant why not simply correct for it? Yet systematic errors undoubtedly exist, and they differ in some fundamental way from the kind of errors we call random. Early papers by … more
Date: August 5, 1996
Creator: Glosup, J. G. & Axelrod, M. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

H-Area/ITP Geostatistical Assessment of In-Situ and Engineering Properties

Description: This report describes the results of a geostatistical investigation conducted in response to tasks and requirements set out in the SRS Request for Proposal Number 93044EQ, dated January 4, 1994. The project tasks were defined in the Statement of Scope (SOS) Number 93044, Revision 0, dated December 1, 1993, developed by the Savannah River Site Geotechnical Services Department.
Date: September 5, 1995
Creator: Wyatt, D.; Bartlett, S.F.; Rouhani, S. & Lin, Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Winter Fuels Report: Week Ending December 29, 1995

Description: The Winter Fuels Report is intended to provide concise, timely information to the industry, the press, policymakers, consumers, analysts, and State and local governments on the following topics: distillate fuel oil net production, imports and stocks on a US level and for all Petroleum Administration for Defense Districts (PADD) and product supplied on a US level; propane net production, imports and stocks on a US level and for PADD`s 1, 2, and 3; natural gas supply and disposition and undergrou… more
Date: January 5, 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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