Coastal Cliff Sediments, San Diego Region, Dana Point to the Mexican Border (1887 to 1947) (open access)

Coastal Cliff Sediments, San Diego Region, Dana Point to the Mexican Border (1887 to 1947)

From Summary: These studies document the temporally episodic and areally site-specific character of subaerial erosion, which is shown to be directly related to prevailing meteorologic conditions.
Date: December 1988
Creator: unknown
System: The UNT Digital Library
Information Selection Systems Retrieval Replica Copies: a State-of-the-Art Report (open access)

Information Selection Systems Retrieval Replica Copies: a State-of-the-Art Report

Description of 15 specific systems employing search-type selection principles.
Date: December 31, 1961
Creator: Bagg, Thomas C. & Stevens, Mary Elizabeth
System: The UNT Digital Library
Arrangement of Bodies of Revolution in Supersonic Flow to Reduce Wave Drag (open access)

Arrangement of Bodies of Revolution in Supersonic Flow to Reduce Wave Drag

"The wave drag of a combination of slender bodies of revolution at zero angle of attack is studied with a view to determining the arrangements for which the total drag is a minimum. Linearized theory is used to calculate the pressure distribution in the field surrounding the bodies. The interference drag coefficient is computed for different arrangements" (p. 1).
Date: December 17, 1951
Creator: Friedman, Morris D.
System: The UNT Digital Library
Characteristics of a Hot Jet Discharged from a Jet-Propulsion Engine (open access)

Characteristics of a Hot Jet Discharged from a Jet-Propulsion Engine

From Summary: "An investigation of a heated jet was conducted in conjunction with tests of an axial-flow jet-propulsion engine in the Cleveland altitude wind tunnel. Pressure and temperature surveys were made across the jet 10 and 15 feet behind the jet-nozzle outlet of the engine. Surveys were obtained at pressure altitudes of 10,000, 20,000, 30,000, and 40,000 feet with test-section velocities from 30 to 110 feet per second and test-section temperatures from 60 F to -50 F. From measurements taken throughout the operable range of engine speeds, tail-pipe outlet temperatures from 500 F to 1250 F and jet velocities from 400 to 2200 feet per second were obtained."
Date: December 27, 1946
Creator: Fleming, William A.
System: The UNT Digital Library
Computers, Health Records, and Citizen Rights (open access)

Computers, Health Records, and Citizen Rights

Report issued by the Bureau of Standards over studies on the benefits of computerized record-keeping. Medical records were chosen for the studies, and they also focus on patient privacy and rights. This report includes tables, and illustrations.
Date: December 1976
Creator: Westin, Alan F.; Baker, Michael A.; Annas, George J.; Silberberg, Richard; Broder, Jamie; Isbell, Florence et al.
System: The UNT Digital Library
An Investigation at Low Speed of a Large-Scale Triangular Wing of Aspect Ratio Two 2: The Effect of Airfoil Section Modifications and the Determination of the Wake Downwash (open access)

An Investigation at Low Speed of a Large-Scale Triangular Wing of Aspect Ratio Two 2: The Effect of Airfoil Section Modifications and the Determination of the Wake Downwash

Report presenting a study of the characteristics of a large-scale triangular wing to include the effects of section modifications. The wing in this report is the same as the one in the previous report but features various degrees of rounding of the wing leading edge and wing maximum thickness rather than having sharp edges. Results regarding the effects of airfoil section modifications, visible trailing vortices, and surveys in the extended chord plane are provided.
Date: December 10, 1947
Creator: Anderson, Adrien E.
System: The UNT Digital Library
Telecommunication Technologies, Networking and Libraries (open access)

Telecommunication Technologies, Networking and Libraries

Abstract: The conference provided an overview of current and developing technologies for digital transmission of image data that are likely to have an impact on the operations of libraries and information centers or provide support for information networking. Technologies reviewed include slow-scan television, teleconferencing, and videodisc. Other papers discuss technology and standards development for computer network interconnection through hardware and software, particularly packet-switched networks; computer network protocols for library and information service applications; the structure of a national bibliographic telecommunications network; and the major policy issues involved in the regulation or deregulation of the common communications carriers industry.
Date: December 1981
Creator: Knight, Nancy H.
System: The UNT Digital Library
Performance of a blunt-lip side inlet with ramp bleed, bypass, and a long constant-area duct ahead of the engine : Mach number 0.66 and 1.5 to 2.1 (open access)

Performance of a blunt-lip side inlet with ramp bleed, bypass, and a long constant-area duct ahead of the engine : Mach number 0.66 and 1.5 to 2.1

Unsteady shock-induced separation of the ramp boundary layer was reduced and stabilized more effectively by external perforations than by external or internal slots. At Mach 2.0 peak total-pressure recovery was increased from 0.802 to 0.89 and stable mass-flow range was increased 185 percent over that for the solid ramp. Peak pressure recovery occurred just before instability. The 7 and one-third-diameter duct ahead of the engine reduced large total-pressure distortions but was not as successful for small distortions as obtained with throat bleed. By removing boundary-layer air the bypass nearly recovered the total-pressure loss due to the long duct.
Date: December 28, 1956
Creator: Allen, John L.
System: The UNT Digital Library
Altitude-Wind-Tunnel Investigation of Combustion-Chamber Performance on J47 Turbojet Engine (open access)

Altitude-Wind-Tunnel Investigation of Combustion-Chamber Performance on J47 Turbojet Engine

From Introduction: "Results are presented to indicate the effect of altitude, flight Mach number, and exhaust-nozzle-outlet area on the combustion efficiency, the losses in total pressure occurring in the combustion chamber, and the fractional loss in engine cycle efficiency resulting from combustion-chamber pressure losses. The engine cycle efficiency is also presented.These results are shown graphically as a fraction of corrected engine speed and in tabular form."
Date: December 15, 1950
Creator: Campbell, Carl E.
System: The UNT Digital Library
An Analytical Model for Predicting Cross-Country Vehicle Performance, Appendix B: Vehicle Performance in Lateral and Longitudinal Obstacles (Vegetation), Volume 1: Lateral Obstacles (open access)

An Analytical Model for Predicting Cross-Country Vehicle Performance, Appendix B: Vehicle Performance in Lateral and Longitudinal Obstacles (Vegetation), Volume 1: Lateral Obstacles

First part of an appendix that accompanies a study meant to develop a model for predicting the cross-country performance of military vehicles in various conditions. This volume describes a segment of tests to determine the ability of vehicles to negotiate lateral obstacles (e.g., trees, boulders, holes, mounds, etc.).
Date: December 1968
Creator: Blackmon, Claude A. & Stoll, Jack K.
System: The UNT Digital Library
Chemistry Division Quarterly Report: September, October, November, 1952 (open access)

Chemistry Division Quarterly Report: September, October, November, 1952

Quarterly progress report for the Chemistry Division of the University of California Radiation Laboratory: nuclear chemistry, bio-organic chemistry, metals and high temperature thermodynamics, basic chemistry, and chemical engineering.
Date: December 31, 1952
Creator: University of California Radiation Laboratory
System: The UNT Digital Library
Lawrence Radiation Laboratory Chemistry Division Quarterly Report: September - November 1952 (open access)

Lawrence Radiation Laboratory Chemistry Division Quarterly Report: September - November 1952

Quarterly report of the Chemistry Division at the University of California Radiation Laboratory providing updates for each department about current findings and ongoing research.
Date: December 31, 1952
Creator: Lawrence Radiation Laboratory. Chemistry Division.
System: The UNT Digital Library
Tampa Bay Environmental Atlas (open access)

Tampa Bay Environmental Atlas

"The purpose of the Tampa Bay Environmental Atlas is to compile existing biological and water resource data for the Tampa Bay ecosystem and map these data at a scale of 1:24,000." (from Preface)
Date: December 1984
Creator: Kunneke, J. Thomas & Palik, Thomas F.
System: The UNT Digital Library
The Application of Data Processing Techniques to a Maintenance Work Control Program (open access)

The Application of Data Processing Techniques to a Maintenance Work Control Program

Description of a data collection and reporting system which was devised and installed in the Union Carbide Nuclear Company's Y-12 Plant Maintenance Division.
Date: December 18, 1963
Creator: Westbrook, J. D.
System: The UNT Digital Library
Report of the Forty-Third National Conference on Weights and Measures, 1958 (open access)

Report of the Forty-Third National Conference on Weights and Measures, 1958

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 1, 1958
Creator: United States. National Bureau of Standards.
System: The UNT Digital Library
Parallel Programming with PCN. Revision 1 (open access)

Parallel Programming with PCN. Revision 1

PCN is a system for developing and executing parallel programs. It comprises a high-level programming language, tools for developing and debugging programs in this language, and interfaces to Fortran and C that allow the reuse of existing code in multilingual parallel programs. Programs developed using PCN are portable across many different workstations, networks, and parallel computers. This document provides all the information required to develop parallel programs with the PCN programming system. In includes both tutorial and reference material. It also presents the basic concepts that underlie PCN, particularly where these are likely to be unfamiliar to the reader, and provides pointers to other documentation on the PCN language, programming techniques, and tools.
Date: December 1991
Creator: Foster, Ian & Tuecke, Steven
System: The UNT Digital Library
Characteristics of U.S. Rice Fields and Their Effects on Ground Mobility (open access)

Characteristics of U.S. Rice Fields and Their Effects on Ground Mobility

"The primary objective of this study was to obtain information on the environmental characteristics of rice fields in the United States and the effect of these characteristics on ground mobility for comparison with similar characteristics of rice fields in Southeast Asia as data from the latter become available" (p. vii).
Date: December 1965
Creator: Kennedy, James Garland & Rush, Edgar S.
System: The UNT Digital Library
State-of-the-Art for Assessing Earthquake Hazards in the United States: Report 11, Imagery in Earthquake Analysis (open access)

State-of-the-Art for Assessing Earthquake Hazards in the United States: Report 11, Imagery in Earthquake Analysis

Partial abstract: "Recent advances in the fields of remote sensing, engineering geology, seismology, and earthquake engineering have developed a need for a systematic comprehensive review of the basic principles and methods of applying remote sensing for evaluation of earthquake hazards and seismic risk. This paper responds to this need by reviewing basic concepts, summarizing essential, state-of-the-art knowledge of theory and instrumental methods, establishing procedures evaluations, and discussing representative case histories that illustrate earthquake hazard evaluations that are based on remote sensing analysis."
Date: December 1978
Creator: Glass, Charles E. & Slemmons, David B.
System: The UNT Digital Library
Trafficability of Soils: A Summary of Trafficability Studies Through 1955 (open access)

Trafficability of Soils: A Summary of Trafficability Studies Through 1955

Summary of trafficability studies conducted by the Waterways Experiment Station. It includes information about phase I tests related to "Soil Classification and Trafficability Data" as a sub-project of "Trafficability of Soils as Related to the Mobility of Military Vehicles" (published 1947-1955). It also includes initial results of phase II, "Soils Trafficability Predictions."
Date: December 1956
Creator: Waterways Experiment Station (U.S.)
System: The UNT Digital Library
Report of the Thirty-Sixth National Conference on Weights and Measures, 1951 (open access)

Report of the Thirty-Sixth National Conference on Weights and Measures, 1951

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 10, 1951
Creator: United States. National Bureau of Standards.
System: The UNT Digital Library
Engineering Evaluation of Factors Affecting Quality of Water Sources Available for Saline Water Conversion Plants (open access)

Engineering Evaluation of Factors Affecting Quality of Water Sources Available for Saline Water Conversion Plants

Report investing the "effects of contaminated raw water supplies on conversion processes," and studying "potential technical and economic advantages of combination saline water and sewage effluent conversion plants" (p. 1).
Date: December 1965
Creator: Sheppard T. Powell Associates
System: The UNT Digital Library
Civil Defense Research Project Annual Progress Report: March 1966 - March 1967 (open access)

Civil Defense Research Project Annual Progress Report: March 1966 - March 1967

Report containing the results of Oak Ridge National Laboratory's research relating to civil defense.
Date: December 1967
Creator: Oak Ridge National Laboratory
System: The UNT Digital Library
The Literature of Nuclear Science: Its Management and Use (open access)

The Literature of Nuclear Science: Its Management and Use

From preface: Proceedings of a conference of AEC contractor and depository librarians on the operations of the Division of Technical Information
Date: December 1962
Creator: unknown
System: The UNT Digital Library
U.S. Pacific Marine Mammal Stock Assessments: 2011 (open access)

U.S. Pacific Marine Mammal Stock Assessments: 2011

This is an assessment report on the population of marine mammals along the U.S. Pacific coastline. These reports are ever-growing and subject to change annually.
Date: December 15, 2011
Creator: Caretta, James V.; Forney, Karin A.; Oleson, Erin; Martien, Karen; Muto, Marcia M.; Lowry, Mark S. et al.
System: The UNT Digital Library