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Annual Variation of Temperature Field and Heat Transfer Under Heated Ground Surfaces (Slab-on-Grade Floor Heat Loss Calculation)

Description: Report issued by the National Bureau of Standards over studies conducted on sub-surface temperatures and heat transfer. Testing methods are discussed. This report includes tables, and illustrations.
Date: June 1983
Creator: Kusuda, Tamami; Piet, O. & Bean, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Computerization of Welding Information

Description: From abstract: The Workshop on Computerization of Welding Information, sponsored by the National Bureau of Standards and the American Welding Institute, was held August 5-6, 1986 in Knoxville, Tennessee. Forty-two welding engineers, welding managers, and computer scientists gathered to discuss the necessity and design of databases for welding information. Each subject was introduced by specialists in that area.
Date: June 1988
Creator: Siewert, T. A. & Jones, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optical Time-Domain Reflectometer Performance and Calibration Studies

Description: from Introduction: The measurement accuracy of the optical time-domain reflectometer (OTDR) is restricted in some applications by a limited operational dynamic range and by a lack of standardized test procedures. In an effort to better understand these restrictions, we have measured the range of linearity of some avalanche photodiodes used as backscatter detectors. Also, the effect of input launch conditions is examined and a possible standardized OTDR test procedure is proposed. Using these su… more
Date: June 1983
Creator: Danielson, B. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Near-Field Array of Yagi-Uda Antennas for Electromagnetic Susceptibility Testing

Description: Abstract: In electromagnetic susceptibility testing of electronic equipment, the ideal incident field is a plane wave. To approximate this condition, a seven-element array of Yagi-Uda antennas has been constructed and tested at a frequency of 500 MHz. The element weightings are determined by a near-field synthesis technique which optimizes the uniformity of the field throughout a rectangular test volume in the near field of the array. The amplitude and phase of the electric field have been meas… more
Date: June 1985
Creator: Hill, David A. & Koepke, Galen H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tables of Industrial Gas Container Contents and Density for Oxygen, Argon, Nitrogen, Helium, and Hydrogen

Description: Abstract: Custody transfer tables are presented for oxygen, argon, nitrogen, helium, and hydrogen. The tables are based on standard reference data previously compiled by the National Bureau of Standards. Two sets of tables are provided for each fluid. Tables in engineering units cover the range -40 to 130*F with pressures from 100 to 10,000 prig. Tables in SI units (density versus pressure and temperature) cover the range 200 to 370 K with pressures from 0.5 to 70 MPa. The tables in engineering… more
Date: June 1985
Creator: Younglove, Ben A. & Olien, Neil A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Shielded Balanced and Coaxial Transmission Lines: Parametric Measurements and Instrumentation Relevant to Signal Waveform Transmission in Digital Service

Description: Abstract: A method is presented for determining the impulse and step responses of a shielded cable using time domain terminal measurements and a physically based mathematical model for the transmission line properties of the cable. The method requires a computer controlled time domain measurement system and was implemented using the NBS Automatic Pulse Measurement System (APMS). Data are also developed for the frequency domain complex propagation function (attenuation and its related minimum-ph… more
Date: June 1981
Creator: Gans, William L. & Nahman, N. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Characterization of Optical Fiber Waveguides: A Bibliography with Abstracts, 1970-1980

Description: Abstract: This bibliography contains approximately 450 citations of papers concerning the characterization of optical fiber waveguides. Papers from scientific journals, trade journals and conferences are included along with book chapters. The citations of organized by parameter measured and measurement method. Where published abstracts are available they are included.
Date: June 1981
Creator: Day, G. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

WR 10 Millimeter Wave Microcalorimeter

Description: Abstract: A microcalorimeter has been built in WR 10 waveguide, 75-110 GHz, to serve as a power standard at the National Bureau of Standards (NBS). Included here is an evaluation of the errors in using the microcalorimeter for the measurement of effective efficiency of bolometer mounts. The error analysis shows a systematic uncertainty of +/- .83 percent and a random uncertainty of .37 percent.
Date: June 1981
Creator: Weidman, Manly P. & Hudson, Paul A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tests of Commercial Densimeters for LNG Service

Description: Abstract: Densimeters for liquefied natural gas (LNG) from four manufacturers were tested in liquid methane and an LNG-like mixture of methane, propane, and nitrogen in the density reference system (DRS). The calibration and performance of one type tested for the first time are reported. The stability of the calibrations and performances of three densimeters of a type previously tested have been examined and are also reported here.
Date: June 1982
Creator: Siegwarth, J. D. & LaBrecque, J. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DATAPLOT: Introduction and Overview

Description: Abstract: This manual provides DATAPLOT code solution to a variety of commonly occurring graphical problems. A line-by-line explanation of code is given, along with illustrations and general discussion.
Date: June 1984
Creator: Filliben, James J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transparent Metrology of Signal to Noise Ratios of Noisy Band-Limited Digital Signals

Description: From abstract: I propose the use of a template method for quantitative, correct, and transparent measurement of signal power to additive noise power ratios (SNR) of digital signals and systems under full operating conditions. Outer guard chips of digital templates hold intersymbol interference fixed on inner target chips in realizations of the respective template patterns in traffic. The proposed template method needs to be developed and proven as a potentially valuable metrology capability; it… more
Date: June 1985
Creator: Halford, Donald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Standard Reference Data Publications, 1985-1986

Description: Abstract: The National Bureau of Standards' Office of Standard Reference Data manages a network of data centers that prepare evaluated databases of physical and chemical properties of substances. Databases are available in printed form, on magnetic tapes, diskettes, and through on-line computer networks. This document provides a comprehensive list of the products available from the National Standard Reference Data System (NSRDS) for the years 1985-1986, including indexes qualified by author, ma… more
Date: June 1987
Creator: Sauerwein, Joan C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement of Electrical Quantities in Pulse Power Systems

Description: Abstract: The Workshop on Measurement of Electrical Quantities in Pulse Power Systems addressed measurements in pulse systems having the characteristics of pulse duration less than a millisecond, system voltages greater than 10 kilovolts, and system currents greater than 10 kiloamperes. The presented papers were divided into four categories: voltage measurements; current measurements; power and energy measurements, and data acquisition. Included are discussions of applications of conventional m… more
Date: June 1982
Creator: McKnight, R. H. & Hebner, R. E., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Plane-Wave Scattering-Matrix Theory of Antennas and Antenna-Antenna Interactions

Description: From Abstract: "This monograph is distinguished by the use of plane-wave spectra for the representation of fields in space and by the consideration of antenna-antenna (antenna-scatterer) interactions at arbitrary separation distances." From Preface: "The primary objective of this monograph is to facilitate the critical acceptance and proper application of antenna and field measurement techniques deriving more or less directly from the plane-wave scattering matrix (PWSM) theory of antennas and a… more
Date: June 1981
Creator: Kerns, David M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Research and Innovation in the Building Regulatory Process

Description: Report issued by the U.S. National Bureau of Standards discussing studies conducted on building codes, standards, and regulations. The report includes transcripts from the 12th annual National Conference of States on Building Codes and Standards. This report includes tables, and illustrations.
Date: June 1980
Creator: Berry, Sandra A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluating the Impact of Securities Regulation on Venture Capital Markets

Description: Report providing a detailed and analytical assessment of the economic techniques used by researchers to evaluate the efficiency of capital markets. The application of these techniques to that portion of the capital market which supplies venture funds to small, technology-based firms is emphasized. The primary elements of such analysis are the "efficient market ' hypothesis" and the "capital asset pricing model." The empirical analogue of the latter is commonly referred to as the market model."
Date: June 1980
Creator: Barth, James R.; Cordes, Joseph J. & Tassey, Gregory
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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