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Conferences

Internet-Based Calibration of a Multifunction Calibrator

July 1, 2000

Author(s)

L. B. Baca, L. Duda, R. J. Walker, Nile M. Oldham, Mark E. Parker

Broadband Ac-dc Difference Calibrations of Current Shunts up to 100 A at NIST

July 1, 2000

Author(s)

Joseph R. Kinard Jr., Thomas E. Lipe Jr., Clifton B. Childers, Owen B. Laug, Jon R. Pratt

NIST is now offering broadband, ac-dc difference calibrations of current shunts from 3 A to 100 A, and at frequencies up to 30 kHz, as special tests. We present...

Low-Frequency Impedance Calibrations at NIST

July 1, 2000

Author(s)

Andrew D. Koffman, Yui-May Chang

This paper presents an overview of the low-frequency impedance measurement services offered through the Impedance Calibration Laboratory (ICL) at the National...

Measuring Interface Strength in Single Fiber Composites: The Effect of Stress Concentrations

July 1, 2000

Author(s)

Gale A. Holmes, R C. Peterson

Fiber-matrix interface strength is known to be a critical factor in controlling the long-term performance of structural composites. This parameter is often...

Evaluating Evaluation Measure Stability

July 1, 2000

Author(s)

C E. Buckley, Ellen M. Voorhees

This paper presents a novel way of examining the accuracy of the evaluation measures commonly used in information retrieval experiments. It validates several of...

Image Processing and Recognition - Mixture of Experts for Classification of Gender, Ethnic Origin, and Pose of Human Faces

July 1, 2000

Author(s)

S Gutta, J Huang, P. Jonathon Phillips, H Wechsler

In this paper we describe the application of mixtures of experts on gender and ethnic classification of human faces, and pose classification, and show their...

Simultaneous Measurement of Torque, Axial Normal Force and Volume Change in the NIST Torsional Dilatometer

July 1, 2000

Author(s)

Carl R. Schultesiz, G B. McKenna

The NIST Torsional Dilatometer measures simultaneously the torque, axial normal force and volume change in response to a torsional deformation. While the torque...

Microwave Detection of Stress Induced Farigue Cracks in Steel and Potential of Crack Opening Determination Using a New Phase Sensitive Approach Based on a Waveguide Magic TEE

July 1, 2000

Author(s)

N Qaddoumi, E Ranu, R Zoughi, Joseph D. McColskey

Detection and evaluation of surface cracks in metals is an important facet of nondestructive testing and evaluation (NDT&E). Cracks in bridges, aircraft wings...

A Nanocomposite Poly(Methyl-Methacrylate) Bone Cement

July 1, 2000

Author(s)

A H. Gomoll, A Bellare, W Fitz, T S. Thornhill, R D. Scott, P R. Jemian, Gabrielle G. Long

Poly(methyl methacrylate) (PMMA) based orthopaedic bone cements contain 1-3 micro υ size radiopacifier particles. Incomplete dispersion of these particles leads...

1-cm Collimated Source for Use in Infrared Calibrations

July 1, 2000

Author(s)

Beverly Klemme, Timothy M. Jung, Adriaan C. Carter, Eric L. Shirley, Steven R. Lorentz, Raju V. Datla

A 1 cm collimated source has been developed and tested for calibration of detectors in the 2 m to 8 m range. This source will be used to calibrate the Transfer...

Splicing Together Size Distributions to Increase the Size Range of a Phase Doppler Interferometer

July 1, 2000

Author(s)

J F. Widmann, S R. Charagundla, Cary Presser, Stefan D. Leigh

A phase Doppler interferometer (PDI) was used to measure the intensity (i.e., the expected number of droplets measured per unit time) of a swirling methanol...

Automatic Generation of Simulation Models from Neutral Libraries: An Example

July 1, 2000

Author(s)

Albert T. Jones, R A. Wysk, Y J. Son

Researchers at the National Institute of Standards and Technology have proposed the development of neutral libraries of simulation components. The availability...

Architecture for Modeling and Simulation of Global Distributed Enterprises

July 1, 2000

Author(s)

Charles R. McLean, Swee K. Leong, Frank H. Riddick

This paper presents an overview of a neutral reference architecture for integrating distributed manufacturing simulation systems with each other, with other...

Representing an Artifact Transport System in a Design Repository: A Case Study

July 1, 2000

Author(s)

Robert Allen, Ram D. Sriram, Simon Szykman, Robert J. Fijol

We report on a case study representing the design essence of a prototype ultra-high vacuum artifact transport system (ATS) in an existing design repository (DR)...

Mining Usability Information from Log Files: A Multi-Pronged Approach

July 1, 2000

Author(s)

Michelle P. Steves, Emile L. Morse

This is a position paper for a workshop concerned with issues and experiences surrounding logged data for on-line communities. We briefly describe relevant...

Cost and Process Information Modeling for Dry Machining

July 1, 2000

Author(s)

Shaw C. Feng, M Hattori

The cost of using coolant in machining industry world-wide is very high. Through a literature survey, it costs multi-billion dollars for coolant acquisition and...

Information Modeling on Conceptual Process Planning Integrated with Conceptual Design

July 1, 2000

Author(s)

Shaw C. Feng, Eugene Song

Conceptual process planning is a key activity for designers to evaluate manufacturability and manufacturing cost and time in the early product development stage...

CollabLogger: A Tool for Visualizing Groups at Work

July 1, 2000

Author(s)

Michelle P. Steves, Emile L. Morse

The CollabLogger is a visual tool that has been developed to support usability analyses of human-computer interaction in a team environment. The participants in...

Integration of Manufacturing Simulations Using High Level Architecture (HLA)

July 1, 2000

Author(s)

Charles R. McLean, Swee K. Leong, Frank H. Riddick

This paper presents an overview of a neutral reference architecture for integrating distributed manufacturing simulation systems with each other, with other...

AlGaAs Composition Measurements from In Situ Optical Reflectance

July 1, 2000

Author(s)

Kristine A. Bertness, J T. Armstrong, Ryna B. Marinenko, Larry Robins, Albert J. Paul, Joseph G. Pellegrino, Paul M. Amirtharaj, Deane Chandler-Horowitz

We measure the composition of AlGaAs layers during epitaxial crystal growth using in situ normal-incidence optical reflectance supported by independent methods...

Mosquito Noise in MPEG-compressed Video: Test Patterns and Metrics

June 24, 2000

Author(s)

Charles D. Fenimore, John M. Libert, Peter Roitman

Mosquito noise is a time dependent video compression impairment in which the high frequency spatial detail in video images having crisp edges is aliased...

Combustion of Floating, Water-In-Oil Emulsion Layers Subjected to External Heat Flux.

June 14, 2000

Author(s)

A Y. Walavalkar, A K. Kulkarni

Prior studies have shown that emulsions with greater than a certain amount of water do not bum, and thus present a difficulty in applying in-situ combustion...

Computation of Causal Characteristic Impedances

June 12, 2000

Author(s)

Dylan F. Williams, Ronald C. Wittmann

We develop a numerical method of determining the magnitude of characteristic impedance required by causal power-normalized circuit theories from its phase using...

Benchmarking of Advanced CD-SEMs Against the New Unified Specification for Sub-0.18 Micrometer Lithography

June 2, 2000

Author(s)

A Deleporte, J Allgair, C Archie, G Banke, Michael T. Postek, J Schlesinger, Andras Vladar, A Yanof

The Advanced Metrology Advisory Group (AMAG) comprised of representatives from International SEMATECH consortium member companies and the National Institute of...

Errors in Accelerometer Calibration Using Laser interferometry Due to Harmonic Distortion and Cross Motion in the Applied Motion

June 1, 2000

Author(s)

Beverly F. Payne, David J. Evans

The development of exciters for the precise calibration of accelerometers requires minimizing distortion and cross motion in the exciter (shaker). It is well...

Realistic Sampling-Circuit Model for a Nose-to-Nose Simulation

June 1, 2000

Author(s)

Catherine A. Remley, Dylan F. Williams, Donald C. DeGroot

We extend previously developed oscilloscope sampler models to include realistic circuit characteristics and use these models to investigate the nose-to-nose...

Multiport Noise Characterization and Differential Amplifiers

June 1, 2000

Author(s)

James P. Randa

I address the issue of the definition and measurement of noise figure and parameters to characterize multiport devices, particularly differential amplifiers. A...

Uncertainty in Primary Gas Flow Standards Due to Flow Work Phenomena

June 1, 2000

Author(s)

John D. Wright, Aaron N. Johnson

Static gravimetric and static volumetric gas flow standards are both affected by uncertainty components related to the measurement of the change of mass of gas...

Thermal Performance of Residential Electric Water Heaters Using Alternative Blowing Agents

June 1, 2000

Author(s)

Arthur H. Fanney, Robert R. Zarr, J D. Ketay-Paprocki

This paper presents the results of a study aimed at quantifying the performance of water heaters insulated with polyurethane foams using three different blowing...

Characterizing the Appearance and Its Related Microstructure of Metallic-Flaked Coatings

June 1, 2000

Author(s)

Li Piin Sung, Maria E. Nadal, M E. McKnight

The National Institute of Standards and Technology (NIST) is conducting a study to advance the science of measuring and modeling the optical scattering...

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