Technical Report Archive & Image Library (TRAIL) - 526 Matching Results
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- Construction of a Large Transverse Electromagnetic Cell
- Report issued by the U.S. National Bureau of Standards discussing the construction of large electromagnetic cells. As stated in the introduction, "this instruction provides information and procedures necessary to fabricate a large transverse electromagnetic (TEM) cell to be used for experimental "electromagnetic interference" (EMI) evaluation studies" (p. 1). This report includes illustrations, and photographs.
- Binary Phase Diagrams of Transition Elements
- Chart issued by the U.S. National Bureau of Standards illustrating the systematic relationships between phase diagrams of transition elements. This chart includes color illustrations.
- Report of the Forty-Fourth National Conference on Weights and Measures, 1959
- 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.
- Performance of the Norris Cotton Federal Office Building for the First 3 Years of Operation
- Report issued by the National Bureau of Standards over use of the Norris Cotton Federal Building. The report focuses on the energy conservation features of the building. This report includes tables, illustrations, and photographs.
- Determining Cost-Effective Insulation Levels for Masonry and Wood-Frame Walls in New Single-Family Housing
- Report issued by the National Bureau of Standards over calculations for cost-effective insulation in single-family housing. Different calculations are made with regards to location, energy pricing, heating and cooling equipment available, and financial criteria. This report includes tables, illustrations, and photographs.
- Energy Measurement in the Standard Penetration Test
- Report issued by the National Bureau of Standards over standard penetration testing. The history, limitations, and testing procedures are presented. This report includes tables, photographs, and illustrations.
- Organization of Building Standards Systematic Techniques for Scope and Arrangement
- Report issued by the National Bureau of Standards over the organization of standards for quick and reliable access. Organizational developments are discussed. This report includes illustrations, and photographs.
- Engineering Aspects of the September 19, 1985 Mexico Earthquake
- Report issued by the National Bureau of Standards over the 1985 Mexico earthquake. The rescue efforts and damage assessments are discussed. This report includes tables, maps, illustrations, and photographs.
- Thermal Behavior of Fine-Grained Soils
- Report issued by the National Bureau of Standards over thermal tests conducted on soil samples. The results of the laboratory tests are discussed. This report includes tables, illustrations, photographs.
- Low-Voltage Room Thermostat Performance
- Report issued by the National Bureau of Standards over low voltage electric thermostats. Thermostat test results are discussed. This report includes illustrations, and photographs.
- Turbulent Wind Effects on Tension Leg Platform Surge
- Report issued by the National Bureau of Standards on "surge response to turbulent wind in the presence of current and waves" (p. iii). Methods for estimating surge response are discussed. This report includes tables, graphs, and illustrations.
- A Daylighting Model for Building Energy Simulation
- Report issued by the National Bureau of Standards over the energy performance of a day-lighted building. The different models and functions are discussed. This report includes tables, graphs, illustrations, and photographs.
- Calibration of Temperature Measurement Systems Installed in Buildings
- Report issued by the National Bureau of Standards over calibration of thermometers for accurate temperature measurements in buildings. Methods of on-site calibration are discussed. This report includes graphs, and illustrations.
- Wind Loading and Strength of Cladding Glass
- Report issued by the National Bureau of Standards over studies conducted on glass cladding behavior under wind loads. Procedures for investigating cladding behavior are discussed. This report includes graphs, illustrations, and photographs.
- Computer Modeling of the Vapor Compression Cycle with Constant Flow Area Expansion Device
- Report issued by the National Bureau of Standards over studies conducted on vapor compression cycles. Methods of operation are discussed. This report includes graphs, illustrations, and photographs.
- Annual Variation of Temperature Field and Heat Transfer Under Heated Ground Surfaces (Slab-on-Grade Floor Heat Loss Calculation)
- 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.
- General Guidelines for the On-Site Calibration of Humidity and Moisture Control Systems in Buildings
- Report issued by the National Bureau of Standards over calibration of indoor humidity and moisture control. Guidelines used for on-site calibration are discussed. This report includes tables, graphs, and illustrations.
- On-Site Calibration of Flow Metering Systems Installed in Buildings
- Report issued by the National Bureau of Standards over calibration of flow-metering systems. Methods for on-site calibration are discussed. This report includes illustrations.
- Directional Extreme Wind Speed Data for the Design of Buildings and Other Structures
- Report issued by the National Bureau of Standards over wind speed data collected for the design of buildings. The wind speed data is discussed. This report includes tables.
- Effectiveness of Solar Shading for an Office Building
- Report issued by the National Bureau of Standards over the effectiveness of solar screens on office buildings. The effectiveness of solar shading is discussed. This report includes tables, maps, illustrations, and photographs.
- Ring-On-Ring Tests and Load Capacity of Cladding Glass
- Report issued by the National Bureau of Standards over studies conducted on the load capacity of cladding glass. Testing methods are discussed. This report includes tables, photographs, and illustrations.
- Potential Energy Savings in Residential Oil-Fired Heating Systems in the United States
- Report issued by the National Bureau of Standards over studies conducted on the potential energy savings of residential heating systems. The results of oil-fired heating systems are discussed. This report includes tables, graphs, and illustrations.
- Application of Method of Characteristics to Model the Transport of Discrete Solids in Partially-Filled Pipe Flow
- Report issued by the National Bureau of Standards over transporting discrete solids in partially-filled flow pipes. The methods and application of drainage flow are discussed. This report includes tables, illustrations, and photographs.
- Analytical and Experimental Analysis of Procedures for Testing Solar Domestic Hot Water Systems
- Report issued by the National Bureau of Standards over testing procedures used for solar domestic water heating systems. Testing methods are discussed. This report includes tables, illustrations, and photographs.
- The Development and Evaluation of Effective Symbol Signs
- Report issued by the National Bureau of Standards over the history and development of sign systems in the United States. The research and development of more effective systems are discussed. This report includes tables, and illustrations.
- Load Displacement Characteristics of Shallow Soil Anchors
- Report issued by the National Bureau of Standards over studies conducted on load displacement of shallow soil anchors. Characteristics and testing methods are discussed. This report includes graphs, illustrations, and photographs.
- Investigation of the Kansas City Hyatt Regency Walkways Collapse
- Report issued by the National Bureau of Standards documenting investigations conducted on construction failures of two suspended walkways in a Kansas City hotel. It includes tables, illustrations, photographs, and other details of the investigation.
- Errata Sheet Number 1 for National Bureau of Standards Building Science Series 144, September 1983
- Errata sheet for a report issued by the National Bureau of Standards containing corrections to be added to NBS Bulletin 144.
- Investigation of Construction Failure of Harbour Cay Condominium in Cocoa Beach, Florida
- Report issued by the National Bureau of Standards over investigations of construction failure in Cocoa Beach, Florida. Factors for the construction failure are discussed. This report includes tables, illustrations, and photographs.
- An Evaluation of Thermal Energy Conservation Schemes for an Experimental Masonry Building
- Report issued by the National Bureau of Standards over experiments conducted on a masonry building constructed inside an environmental chamber at the NBS. Different climactic conditions were simulated and the thermal response of the building was evaluated. This report includes tables, illustrations, and photographs.
- Evaluation of Construction Loads in Multistory Concrete Buildings
- Report issued by the National Bureau of Standards over construction loads of multistory concrete buildings. Evaluations of the construction loads are discussed. This report includes illustrations, and photographs.
- Performance Criteria for Solar Heating and Cooling Systems in Residential Buildings
- Report issued by the National Bureau of Standards over solar heating and cooling systems in residential buildings. The performance criteria for solar systems are discussed. This report includes illustrations.
- Investigation of Construction Failure of Reinforced Concrete Cooling Tower at Willow Island, West Virginia
- Report issued by the National Bureau of Standards over investigation of the collapse of a concrete cooling tower on Willow Island, West Virginia. Results of field, and laboratory tests are discussed. This report includes tables, illustrations, and photographs.
- Tables of the Exponential Function e [Superscript X]
- Report presenting the fourth edition of the tables of the exponential function e(superscript x). Further indistinct numerals have been cleared up and several values have been adjusted to 2552 decimal places to conform to accuracy standards.
- Construction and Applications of Conformal Maps. Proceedings of a Symposium Held on June 22-25, 1949, at the Institute for Numerical Analysis of the National Bureau of Standards at the University of California, Los Angeles
- Report presented on the topic of conformal mapping and the use of equations in machines. 32 topics from a symposium are provided.
- Tables of the Bessel functions Yo(x), Y1(x), Ko(x), 0<=x<=1
- Report presenting tables for certain Bessel functions.
- Tables of the Confluent Hypergeometric Function F(n/2, 1/2; X) and Related Functions
- Report presenting tables of the confluent hypergeometric function and some related functions. Information regarding the scope of tables, analytical properties, and approximations are provided.
- Table of Sine and Cosine Integrals for Arguments From 10 to 100
- Report presenting tables and sine and cosine integrals for a variety of waves.
- Handbook of Mathematical Functions With Formulas, Graphs, and Mathematical Tables
- A handbook of mathematical functions that is designed to provide scientific investigations with a comprehensive and self-contained summary of the mathematical functions that arise in physical and engineering problems.
- Handbook of Mathematical Functions With Formulas, Graphs, and Mathematical Tables
- A handbook of mathematical functions that is designed to provide scientific investigations with a comprehensive and self-contained summary of the mathematical functions that arise in physical and engineering problems.
- Lectures on Modular Forms
- Report consisting of an expository account of the theory of modular forms and its application to number theory and analysis.
- Sound Insulation of Wall and Floor Constructions
- Report presenting the results of sound-transmission measurements made on a number of types of sound insulating construction.
- National Bureau of Standards Research Reports: Summer 1987
- Summary describing research projects and other activities undertaken by the U.S. National Bureau of Standards, lists of publications from the year, and a calendar of upcoming events.
- Proceedings of the Conference on Accreditation of Construction Materials Testing Laboratories: 1986
- Abstract: A two-day Conference hosted by NBS was held in Gaithersburg, Maryland on May 14-15, 1986 to test the hypothesis that "There is a need for a coordinated methodology for accrediting construction materials testing laboratories." Construction materials include primary materials such as: cement, concrete, aggregates, rock and soil, asphalts, metals, wood and masonry. The Conference was structured to consider: (1) the status of existing laboratory evaluation and accreditation programs; (2) current trends in the accreditation process; and (3) the need for and nature of a coordinated accreditation system. The Conference included the presentation of invited papers and four workshop sessions.
- Computerization of Welding Information
- 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.
- Input Impedance of a Probe Antenna Exciting a TEM Cell
- Abstract: The input impedance of a probe antenna exciting a transverse electromagnetic (TEM) transmission line cell is formulated by a variational approach. The formulation also utilizes the results from a previous work on the field distribution inside a TEM cell excited by a vertical electrical Hertzian dipole. The final result of imoedance is shown to consist of two distinct terms, which are respectively contributed by the ordinary rectangular waveguide and the gap perturbation. Numerical results for both the real and imaginary parts of the impedance are given. The resistive part is found to be proportional to the square of the probe length, and the reactive part largely capacitive.
- Picosecond Time Difference Measurements Utilizing CAMAC-Based ANSI/IEEE-488 Data Acquisition Hardware : Operating Manual IE3, Version 1.0
- Abstract: Automated time-difference measurements at the picosecond level have been achieved. The system described combines the best properties of three common methods: the single heterodyne measurement technique, the frequency divider, and the dual-mixer time-difference measurement system. This particular system combines two instrumentation standards, ANSI/IFEE-583 and ANSI/IEEE-488 with new, modular dual-mixer time-difference measurement hardware. The modular, standardized hardware together with the new measurement techniques permit the data acquisition modules to be contained in a standard CAMAC crate. This system, along with an external controller, is capable of measuring eiqht clocks, at the present time, and is expandable to twenty-four clocks with modified software and additional measurement modules. The system noise performance is described by a (rT = 3 x 10^-12 t^-1 for time difference measurements.
- An Electric and Magnetic Field Sensor for Simultaneous Electromagnetic Near-Field Measurements -- Theory
- Abstract: This paper describes the theory of a single sensor to perform simultaneous electric and magnetic near-field measurements. The theory indicates that it is possible to obtain the magnetic-loop and electric-dipole currents using a loop terminated with identical loads at diametrically opposite points. The theory also indicates that it is possible to obtain an ideal load impedance for achieving equal electric and magnetic field responses of the loop. Preliminary experiments have been performed using plane waves to verify these results. Key words: electric field, electromagnetic interference, electromagnetic radiation, loop, magnetic field, near fields.
- The Characteristics of Iris-Fed Millimeterwave Rectangular Microstrip Patch Antennas
- From introduction: The fabrication of various iris-fed millimeterwave rectangular microstrip patch antennas is described. A model is proposed to describe the iris-fed antenna. Irises ranging in size from 15 percent of the area of the patch to the fully open waveguide are used to couple energy into the antenna. Resonance of the antenna is observed to be insensitive to the size of the iris for irises up to 115 percent of the size of the patch. A study is also made of th? relationship of coupling to the antenna as a function of position of the iris with respect to the transverse plane of the waveguide, the iris always being centered with respect to the patch. In general, the antenna has a VSWR in the waveguide feed on the order of 5:1 at resonance, except for the fully open waveguide which gives rise to a VSWR of 2.9:1 at resonance. Far-field antenna power patterns are observed to be quite broad with H-plane beamwidths on the order of 1300. Maximum antenna gain is seen to be 4.5 dBi with 3 dBi typical. An initial study is made of the microstrip patch antenna fed from a longitudinal waveguide wall. Results indicate that this feed structure is likely to prove valuable for microstrip patch antennas with coupling at least as good as for the transverse-fed patch added to the possibility of feeding of multiple patches from a single waveguide.
- Optical Time-Domain Reflectometer Performance and Calibration Studies
- 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 suggestions, we have made comparisons between attenuation values determined by cutback and backscatter methods and found that good agreement is possible. Finally, some methods are described for checking the response. linearity of OTDR systems.