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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: NBS monograph
 Collection: Technical Report Archive and Image Library
Applications of Waveguide and Circuit Theory to the Development of Accurate Microwave Measurement Methods and Standards

Applications of Waveguide and Circuit Theory to the Development of Accurate Microwave Measurement Methods and Standards

Date: August 1973
Creator: Beatty, R. W.
Description: Report issued by the Bureau of Standards over "the basic theory and analytical methods used in the development of accurate microwave measurement methods and standards" (p. x). These methods are presented and discussed. This report includes tables, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department
Atomic Energy Levels in Crystals

Atomic Energy Levels in Crystals

Date: February 24, 1961
Creator: Prather, John L.
Description: Report discussing discrete energy levels observed within certain crystals which are due to perturbations of energy levels of the free ion by an electrostatic field arising from the crystal lattice. The analytic procedures for determining the field from the charge configuration are given, and the resulting fields are classified according to their symmetry. After a general survey of group-theoretical ideas, the applicable groups are analyzed in detail, and characters appropriate for both integral and half-integral angular momenta of the free ion are tabulated. Text includes tabulations, equations, and matrices using Wigner and Racah coefficients.
Contributing Partner: UNT Libraries Government Documents Department
Automatic Indexing: A State-of-the-Art Report

Automatic Indexing: A State-of-the-Art Report

Date: February 1970
Creator: Stevens, Mary Elizabeth
Description: Report issued by the U.S. National Bureau of Standards discussing results of a survey conducted on automatic mechanized indexing and data processing. As stated in the introduction, "it has concentrated on the major developments in and related demonstrations of automatic indexing potentialities. Examples are also given of indexes compiled by machine and of potentially related research efforts in such areas as natural language text searching, statistical association techniques used for search and retrieval, and proposed systems for concept processing" (p. 1). This report includes an illustration.
Contributing Partner: UNT Libraries Government Documents Department
Automatic Indexing: A State-of-the-Art Report

Automatic Indexing: A State-of-the-Art Report

Date: March 30, 1965
Creator: Stevens, Mary Elizabeth
Description: Report presenting a state-of-the-art survey of automatic indexing systems and experiments. It was conducted by the Research Information Center and Advisory Service on Information Processing, Information Technology Division, Institute for Applied Technology, National Bureau of Standards. Consideration is first given to indexes compiled by or with the aid of machines, including citation indexes. Advantages, disadvantages, and possibilities for modification and improvement are discussed. Experiments in automatic assignment indexing are summarized. Related research efforts in such areas as automatic classification and categorization, computer use of thesauri, statistical association techniques, and linguistic data processing are described. A major question is that of evaluation, particularly in view of evidence of human inter-indexer inconsistency. It is concluded that indexes based on words extracted from text are practical for many purposes today.
Contributing Partner: UNT Libraries Government Documents Department
Automatic Measurement of Network Parameters: A Survey

Automatic Measurement of Network Parameters: A Survey

Date: June 1976
Creator: Beatty, Robert William
Description: Report issued by the Bureau of Standards over a survey conducted on measurement methods of network parameters. As stated in the introduction, "this paper is concerned with the development of automatic methods of measuring basically the magnitudes and phase differences, or the complex ratio of two sinusoidal voltages, and applications of this capability to determining complex reflection coefficients and transmission coefficients and group delay times of electrical networks" (p. 1). This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Automatic Typographic-Quality Typesetting Techniques: A State-of-the-Art Review

Automatic Typographic-Quality Typesetting Techniques: A State-of-the-Art Review

Date: April 7, 1967
Creator: Stevens, Mary Elizabeth
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Basic Magnetic Quantities and the Measurement of the Magnetic Properties of Materials

Basic Magnetic Quantities and the Measurement of the Magnetic Properties of Materials

Date: May 21, 1962
Creator: Sanford, Raymond L.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Bibliography and Index on Vacuum and Low Pressure Measurement

Bibliography and Index on Vacuum and Low Pressure Measurement

Date: November 10, 1961
Creator: Brombacher, W. G.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Bibliography and Index on Vacuum and Low Pressure Measurement, January 1960 to December 1965

Bibliography and Index on Vacuum and Low Pressure Measurement, January 1960 to December 1965

Date: May 31, 1967
Creator: Brombacher, W. G.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Bibliography of Temperature Measurement: January 1953 to June 1960

Bibliography of Temperature Measurement: January 1953 to June 1960

Date: April 6, 1961
Creator: Halpern, Carl
Description: Report presenting more than 500 references to the field of temperature measurement. These references were collected from two general sources: Scientific and technical literature and government reports. The period covered is from 1953 to June 1960, with some from earlier dates. References are divided into a number of categories based on the type of instrument used. Some references to calibration of instruments and to scientific theories upon which temperature measurement is based are also presented.
Contributing Partner: UNT Libraries Government Documents Department