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Displaying 1526 - 1550 of 1916

Simultaneous Measurements of Drop Size and Velocity in Large-Scale Sprinkler Flows Using Particle Tracking and Laser-Induced Fluorescence (NIST GCR 03-852)

July 1, 2003

Author(s)

Anthony D. Putorti Jr., D Everest, A A. Atreya

This paper reports an experimental technique that is developed for instantaneous planar measurement of droplet size and velocity for dilute sprays in general and sprinkler sprays in particular. This particle tracking technique relies on photographic

Calibration of a Two-Color Imaging Pyrometer and Its Use for Particle Measurements in Controlled Air Plasma Spray Experiments

June 1, 2002

Author(s)

Steven P. Mates, D Basak, Frank S. Biancaniello, Stephen D. Ridder, Jon C. Geist

… Advances in digital imaging technology have enabled the development of …

An Experimental Study of High Weber Number Impact of Methoxy-Nonafluorobutane C 4 F 9 OCH 3 (HFE-7100) and n-Heptane Droplets on a Heated Solid Surface

March 1, 2002

Author(s)

Samuel L. Manzello, Jiann C. Yang

… The impaction process was recorded using a high-speed digital camera at 1000 frames per second. The initial droplet …

Lattice Boltzmann Simulations of Single and Multi-Component Flow in Porous Media

July 1, 1999

Author(s)

Nicos Martys, John G. Hagedorn, J E. Devaney

We examine the utility of the lattice Boltzmann method for modeling fluid flow in porous media. First the lattice Boltzmann method is validated for the case of single component flow in several idealized flow geometries. Large scale simulations of fluid

A Fast Pulse Oscilloscope Calibration System

October 1, 1998

Author(s)

J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders

A system is described for calibrating high-bandwidth oscilloscopes using pulse signals. The fast pulse oscilloscope calibration system (FPOCS) is to be used to determine the step response parameters for digitizing oscilloscopes having bandwidths of 20 GHz

A Fast Pulse Oscilloscope Calibration System

May 1, 1998

Author(s)

J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders

A Fast Pulse Oscilloscope Calibration System

May 1, 1998

Author(s)

J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders

Chapter 6: Virtual Environments for Design and Manufacture

October 1, 1997

Author(s)

Kevin W. Lyons, Scott Angster, Sankar Jayaram

… virtual reality for prototyping allows designers to create digital prototypes and evaluate the products thoroughly …

Surveying Through Solid Walls

June 8, 1997

Author(s)

William C. Stone

… pulse-synthesized baseband electromagnetic signals. Digital signal processing techniques are used to recover the …

Extensions of the Prototype Application Protocol of Ready-to-wear Apparel Pattern Making

January 1, 1995

Author(s)

Yung-Tsun T. Lee

A prototype application protocol for ready-to-wear pattern making was developed for the communication of pattern pieces and related information between various CAD systems. The basic methodology for the application protocol is the Standard for the Exchange

PRODUCT DATA EXCHANGE: The PDES Project--Status and Objectives

January 1, 1989

Author(s)

Bradford Smith

… mathematical model of the product. This is called a digital product model, and elements of information in the …

Study of Isochoric Specific Heat Capacity Measurements for Liquid Isobutane

October 12, 2021

Author(s)

Hiroyuki Miyamoto, Hiroshi Kitajima, Noboru Kagawa, Joe W. Magee, Seizo Tsuruno, Koichi Watanabe

… derived from its equation of state. Figure 1 shows a twin-cell type adiabatic calorimeter that has been developed …

A History of Fire Testing: Past, Present, and Future.

March 30, 2009

Author(s)

James R. Lawson

… last half of the twentieth century with the development of digital data logging, computing, data analysis, and scientifically based predictive models. Digital computing has opened the theoretical world that …

A History of Fire Testing and New Opportunities Past, Present, and Future

March 20, 2009

Author(s)

James R. Lawson

Leakage current pathways in Josephson Arbitrary Waveform Synthesizer Standards

August 30, 2024

Author(s)

Raegan Johnson, Jesus Mejia, Alain Rufenacht, Anna Fox, Nathan Flowers-Jacobs, Paul Dresselhaus, Samuel Benz

… Digital-analog conversion, leakage currents, measurement …

Measurement Matters Newsletter Volume 11 Issue 4 October 2021

September 30, 2021

Author(s)

Katrice Lippa, Katya Delak, Robert Hanisch, Charles D. Ehrlich, Lisa Warfield, Georgia L. Harris, Micheal Hicks, David Sefcik, Elizabeth Benham, Tina G. Butcher, Elizabeth Koncki, Shelby Bowers

… measurement, OWM, weights, measures, NIST, metrology, digital, handbooks, EPA, webinars, metric system, awards, …

Development and Applications of a Four-Volt Josephson Arbitrary Waveform Synthesizer

February 13, 2020

Author(s)

Nathan E. Flowers-Jacobs, Alain Rufenacht, Anna E. Fox, Steven B. Waltman, Robert E. Schwall, Justus A. Brevik, Paul D. Dresselhaus, Samuel P. Benz

… Metrology, digital-to-analog conversion, Josephson junction arrays, …

Quantized Pulse Propagation in Josephson Junction Arrays

July 23, 2019

Author(s)

Christine A. Donnelly, Justus Brevik, Nathan Flowers-Jacobs, Anna Fox, Paul Dresselhaus, Peter F. Hopkins, Samuel Benz

… Digital-analog conversion, Josephson junction arrays, …

Josephson Arbitrary Waveform Synthesizer as a Reference Standard for the Measurement of the Phase of Harmonics in Distorted Waveforms

November 14, 2018

Author(s)

Dimitrios Georgakopoulos, Ilya F. Budovsky, Samuel Benz, G. Gubler

… Digital-analog conversion, Josephson arrays, Quantization, …

Radiofrequency Waveform Synthesis with the Josephson Arbitrary Waveform Synthesizer

July 7, 2018

Author(s)

Justus Brevik, Christine A. Donnelly, Nathan Flowers-Jacobs, Anna Fox, Pete Hopkins, Paul Dresselhaus, Samuel P. Benz

… Digital-analog conversion, Josephson arrays, signal …

An analysis of technologies and standards for designing smart manufacturing systems

September 20, 2016

Author(s)

Boonserm Kulvatunyou, Katherine C. Morris, Sangsu Choi, Kiwook Jung

… (ICT), Smart Manufacturing System, Enterprise integration, Digital Manufacturing, Standards Analysis, Software Tools …

Data Acquisition and Analysis Software for Gamma Coincidence Spectrometry

July 1, 2016

Author(s)

Martin Girchis Shetty, Dagistan Sahin

… Gamma-gamma coincidence, Digital data acquisition, High throughput data acquisition, …

Comparison of Timebase Interpolation Methods for Traceable, Wideband mm-Wave Communication Signals

May 26, 2016

Author(s)

Diogo Ribeiro, Kate Remley, Paul D. Hale, Chih-Ming Wang, Dylan Williams

An integral part of processing a signal from a calibrated, equivalent-time sampling oscilloscope is accurately determining sampling times and then interpolating the resulting irregularly spaced time grid to create a uniform time spacing. In this paper we

NIST 10 V Programmable Josephson Voltage Standard System Using a Low Capacity Cryocooler

November 6, 2014

Author(s)

Logan A. Howe, Anna Fox, Alain Rufenacht, Charles J. Burroughs, Paul Dresselhaus, Samuel Benz, Robert E. Schwall

… Digital-analog conversion, Josephson arrays, Quantization, …

Differential sampling measurement of a 7 V rms Sine Wave with a Programmable Josephson Voltage Standard

June 1, 2013

Author(s)

Alain Rufenacht, Charles J. Burroughs, Paul D. Dresselhaus, Samuel P. Benz

… Digital-analog conversion, Josephson arrays, Quantization, …

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