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Theoretical Investigation of the Performance of Proportional Navigation Guidance Systems-Effect of Method of Positioning the Radar Antenna on the Speed of Response

Description: Memorandum presenting a linear theoretical analysis of the performance of three proportional navigation guidance systems installed in a given supersonic, variable-incidence, boost-glide, antiaircraft missile at Mach numbers of 2.7 and 1.3. It is shown that, with the antenna stabilized in space, the effect of component lags on the response is small, so that the speed of response is small, so that the speed of response can be made to approach closely that of the airframe alone.
Date: August 13, 1952
Creator: Abramovitz, Marvin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Theoretical Investigation of the Performance of Proportional Navigation Guidance Systems: Effect of Method of Positioning the Radar Antenna on the Speed of Response

Description: Memorandum presenting a linear theoretical analysis made of the performance of three proportional navigation guidance systems installed in a given supersonic, variable-incidence, boost-glide, antiaircraft missile at Mach numbers of 2.7 and 1.3. Three guidance systems are compared on the basis of the maximum obtainable speed of response of the missile and guidance-system combination consistent with adequate stability. Results regarding the effect of method of positioning the radar antenna on the… more
Date: August 13, 1952
Creator: Abramovitz, Marvin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of residential-conservation-survey methodology for the US Air Force. Interim report. Task two

Description: A US Air Force (USAF) Residential Energy Conservation Methodology was developed to compare USAF needs and available data to the procedures of the Residential Conservation Service (RCS) program as developed for general use by utility companies serving civilian customers. Attention was given to the data implications related to group housing, climatic data requirements, life-cycle cost analysis, energy saving modifications beyond those covered by RCS, and methods for utilizing existing energy cons… more
Date: November 13, 1981
Creator: Abrams, D. W.; Hartman, T. L. & Lau, A. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A hybrid vehicle evaluation code and its application to vehicle design. Revision 2

Description: This paper describes a hybrid vehicle simulation model which can be applied to many of the vehicles currently being considered for low pollution and high fuel economy. The code operates in batch mode with all the vehicle information stored in data files. The code calculates power train dimensions, fuel economy for three driving schedules, time for 0-96 km/h at maximum acceleration, hill climbing performance, and pollution generation rates. This paper also documents the application of the code t… more
Date: December 13, 1994
Creator: Aceves, S. M. & Smith, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analysis of the Effect of Geometry Generated Turbulence on HCCI Combustion by Multi-Zone Modeling

Description: This paper illustrates the applicability of a sequential fluid mechanics, multi-zone chemical kinetics model to analyze HCCI experimental data for two combustion chamber geometries with different levels of turbulence: a low turbulence disc geometry (flat top piston), and a high turbulence square geometry (piston with a square bowl). The model uses a fluid mechanics code to determine temperature histories in the engine as a function of crank angle. These temperature histories are then fed into a… more
Date: December 13, 2004
Creator: Aceves, S. M.; Flowers, D. L.; Martinez-Frias, J.; Espinosa-Loza, F.; Christensen, M.; Johansson, B. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analysis of Electric Energy Usage in Air Force Houses Equipped with Air-to-Air Heat Pumps

Description: From Introduction: "One part of this study, which is presented in this Monograph, consists of an analysis of electric energy usage and electric power demand data obtained from a sample group of occupied houses at Little Rock Air Force Base in Arkansas, equipped with heat pumps, water heaters, cooking ranges, clothes dryers, and miscellaneous appliances all operated by electricity."
Date: July 13, 1962
Creator: Achenbach, Paul R.; Davis, Joseph C. & Smith, William T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Spectroscopic Analyses of the Biofuels-Critical Phytochemical Coniferyl Alcohol and Its Enzyme-Catalyzed Oxidation Products

Description: Lignin composition (monolignol types of coniferyl, sinapyl or p-coumaryl alcohol) is causally related to biomass recalcitrance. We describe multiwavelength (220, 228, 240, 250, 260, 290, 295, 300, 310 or 320 nm) absorption spectroscopy of coniferyl alcohol and its laccase- or peroxidase-catalyzed products during real time kinetic, pseudo-kinetic and endpoint analyses, in optical turn on or turn off modes, under acidic or basic conditions. Reactions in microwell plates and 100 mu L volumes demon… more
Date: July 13, 2011
Creator: Achyuthan, Komandoor; Adams, Paul; Simmons, Blake & Singh, Anup
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Constraints on the Cosmic-Ray Density Gradient Beyond the Solar Circle From Fermi Gamma-Ray Observations of the Third Galactic Quadrant

Description: We repot an analysis of the interstellar ϒ-ray emission in the third Galactic quadrant measured by he Fermi Large Area Telescope. The window encompassing the Galactic plane from longitude 210° to 250° has kinematically well-defined segments of the Local and the Perseus arms, suitable to study the cosmic-ray densities across the outer Galaxy. We measure no large gradient with Galactocentric distance of the ϒ-ray eissivitties per interstellar H atom over the regions sampled in this study. The gra… more
Date: June 13, 2013
Creator: Ackermann, M.; Ajello, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Qcd physics: measurement of the cross section for prompt diphoton production in p anti-p collisions at s**(1/2) = 1.96 tev

Description: We report a measurement of the rate of prompt diphoton production in p{bar p} collisions at {radical}s = 1.96 TeV using a data sample of 207 pb{sup -1} collected with the upgraded Collider Detector at Fermilab (CDF II). The background from non-prompt sources is determined using a statistical method based on differences in the electromagnetic showers. The cross section is measured as a function of the diphoton mass, the transverse momentum of the diphoton system, and the azimuthal angle between … more
Date: June 13, 2005
Creator: Acosta, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement of the Moments of the Hadronic Invariant Mass Distribution in Semileptonic Beta Decays

Description: Using 180 pb{sup -1} of data collected with the CDF II detector at the Tevatron, we measure the first two moments of the hadronic invariant mass-squared distribution in charmed semileptonic B decays. From these we determine the non-perturbative Heavy Quark Effective Theory parameters {Lambda} and {lambda}{sub 1} used to relate the B meson semileptonic branching ratio to the CKM matrix element |V{sub cb}|.
Date: March 13, 2005
Creator: Acosta, D. & TITLE=Measuremen, The CDF Collaboration
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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TWRS technical baseline database manager definition document

Description: This document serves as a guide for using the TWRS Technical Baseline Database Management Systems Engineering (SE) support tool in performing SE activities for the Tank Waste Remediation System (TWRS). This document will provide a consistent interpretation of the relationships between the TWRS Technical Baseline Database Management software and the present TWRS SE practices. The Database Manager currently utilized is the RDD-1000 System manufactured by the Ascent Logic Corporation. In other doc… more
Date: August 13, 1997
Creator: Acree, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comment on "Structural Determinants of Drug Partitioning in Surrogates of Phosphatidylcholine Bilayer Strata"

Description: This article gives comment to a previous article published in 'Molecular Pharmaceuticals' titled, "Structural Determinants of Drug Partitioning in Surrogates of Phosphatidylcholine Bilayer Strata."
Date: January 13, 2015
Creator: Acree, William E. (William Eugene); Brumfield, Michela & Abraham, M. H. (Michael H.)
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
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Industrial alliances

Description: The United States is emerging from the Cold War era into an exciting, but challenging future. Improving the economic competitiveness of our Nation is essential both for improving the quality of life in the United States and maintaining a strong national security. The research and technical skills used to maintain a leading edge in defense and energy now should be used to help meet the challenge of maintaining, regaining, and establishing US leadership in industrial technologies. Companies recog… more
Date: September 13, 1993
Creator: Adams, K. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Energy calibration scheme for acoustic emission

Description: The calibration technique described is an attempt to determine the actual energy release from the events causing emission bursts in beryllium and to quantitatively evaluate the effects of specimen geometry on the apparent energy per burst. (GHT)
Date: September 13, 1977
Creator: Adams, R. O. & Heiple, C. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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ALTERNATIVE MATERIALS TO PD MEMBRANES FOR HYDROGEN PURIFICATION

Description: Development of advanced hydrogen separation membranes in support of hydrogen production processes such as coal gasification and as front end gas purifiers for fuel cell based system is paramount to the successful implementation of a national hydrogen economy. Current generation metallic hydrogen separation membranes are based on Pd-alloys. Although the technology has proven successful, at issue is the high cost of palladium. Evaluation of non-noble metal based dense metallic separation membrane… more
Date: November 13, 2007
Creator: Adams, T & Paul Korinko, P
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Iran: Regional Perspectives and U.S. Policy

Description: This report provides a description of Iran's neighbors' policies and interests, options for Congressional consideration, and an analysis of potential regional implications.
Date: January 13, 2010
Creator: Addis, Casey L.; Blanchard, Christopher M.; Katzman, Kenneth; Migdalovitz, Carol; Nichol, Jim; Sharp, Jeremy M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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