Automatic Indexing: A State-of-the-Art Report (open access)

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

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.
Date: March 30, 1965
Creator: Stevens, Mary Elizabeth
System: The UNT Digital Library
Electrical Parameters of Precision, Coaxial, Air-dielectric Transmission Lines (open access)

Electrical Parameters of Precision, Coaxial, Air-dielectric Transmission Lines

From Introduction: "Following the guidelines established by this committee, several commercially developed precision connectors have appeared on the market which have led to the wide use of the precision coaxial lines as immittance standards. This paper has been prepared to alleviate this situation by providing graphs from which the electrical parameters of the lines may be determined rapidly and accurately."
Date: June 30, 1966
Creator: Nelson, Robert E. & Coryell, Marlene R.
System: The UNT Digital Library
Measurement and Specification of the Physical Factors Which Determine the Saturation of Certain Tints of Yellow (open access)

Measurement and Specification of the Physical Factors Which Determine the Saturation of Certain Tints of Yellow

Technical paper issued by the Bureau of Standards over studies conducted on the specifications of color. The specifications of the color yellow are discussed. This paper includes tables, illustrations, and photographs.
Date: June 30, 1917
Creator: Priest, Irwin G. & Peters, Chauncey G.
System: The UNT Digital Library
Report of the Fortieth National Conference on Weights and Measures, 1955 (open access)

Report of the Fortieth National Conference on Weights and Measures, 1955

Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date: September 30, 1955
Creator: United States. National Bureau of Standards.
System: The UNT Digital Library
Report of the Forty-Eighth National Conference on Weights and Measures, 1963 (open access)

Report of the Forty-Eighth National Conference on Weights and Measures, 1963

Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date: December 30, 1963
Creator: United States. National Bureau of Standards.
System: The UNT Digital Library
Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis (open access)

Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis

Report with two nomograms presented for rapidly obtaining the compound composition of hydrated limes from the oxide analysis. The general nomogram can be applied to any commercial hydrated lime and gives values accurate to within 0.3 percent while the special nomogram is applicable only to regularly hydrated and highly hydrated dolomitic limes and is accurate to within 0.1 percent.
Date: December 30, 1949
Creator: Levin, Ernest M.
System: The UNT Digital Library
Preservation of Documents by Lamination (open access)

Preservation of Documents by Lamination

From Abstract: "Composition and performance specifications for a cellulose acetate laminating film suitable for a cellulose acetate laminating film suitable for archival use are presented. The properties of polyethylene and polyethylene terephthalate films of interest in connection with their possible use for the protection of documents are discussed."
Date: October 30, 1959
Creator: Wilson, William K. & Forshee, B. W.
System: The UNT Digital Library
Sound Insulation of Wall, Floor, and Door Constructions (open access)

Sound Insulation of Wall, Floor, and Door Constructions

From Abstract: "The data obtained at the National Bureau of Standards on the sound insulating properties of building structures are summarized. A brief description of the sound-measuring techniques is given."
Date: November 30, 1964
Creator: Berendt, Raymond D. & Winzer, George E.
System: The UNT Digital Library