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Conferences

Modeling Requirements for Self-integrating Manufacturing Systems

July 1, 2000

Author(s)

Peter O. Denno

This paper discusses modeling requirements to support self-integrating manufacturing systems. Business process re-engineering, as it is currently performed, is...

Testing for Feasible Performance of a Distributed Manufacturing System: a Brief Experience Report

July 1, 2000

Author(s)

David W. Flater

NIST researchers conducted a series of informal performance tests to establish confidence that an existing manufacturing process control system could...

Specification of Interactions in Integrated Manufacturing Systems

July 1, 2000

Author(s)

David W. Flater

Systems of manufacturing software are often constructed by integrating pre-existing software components. Accurate specification of the component interactions in...

Proposed Bullet Signature Comparisons Using Autocorrelation Functions

July 1, 2000

Author(s)

Jun-Feng Song, Theodore V. Vorburger

The National Institute of Standards and Technology (NIST) standard bullets and casings are intended as reference standards for crime laboratories to help verify...

Representation of Heterogeneous Objects in ISO 10303 (STEP)

July 1, 2000

Author(s)

Lalit Patil, D Dutta, Amba D. Bhatt, Kevin K. Jurrens, Kevin W. Lyons, Mike Pratt, Ram D. Sriram

Solid modeling of objects forms an important task in design and manufacturing. Recent developments in the field of layered manufacturing have shown potential...

Performance of Precast Concrete Shear Walls

July 1, 2000

Author(s)

A E. Schultz, Geraldine Cheok, R A. Magana

An experimental program is undertaken to enhance the knowledge base regarding seismic design of precast concrete shear walls. The emulation design and jointed...

Semi-Active Control of Linear and Hysteretic Structures Using Variable Viscous and Magnetorheological Dampers

July 1, 2000

Author(s)

S El-Borgi, Michael A. Riley, Fahim H. Sadek, N Ayed

Numerous studies have been conducted so far on active or hybrid (active/passive) control of hysteretic structures using a wide range of linear and nonlinear...

Measurement Assurance Program for an Intercomparison of Josephson Voltage Standards between NIST and Lockheed Martin Astronautics

July 1, 2000

Author(s)

W. Wyatt Miller, Yi-hua D. Tang

An intercomparison of 10 V Josephson voltage standards (JVS) between NIST and Lockheed Martin Astronautics (LMA) using four travelling Zener standards will be...

Evaluation of Standards for a 10 V MAP Service at NIST

July 1, 2000

Author(s)

Yi-hua D. Tang, June E. Sims

A Measurement Assurance Program (MAP) provides a method of assessing and maintaining the quality of a measurement process. Such a program has two parts: the...

Time-Base Setting Dependence of Pulse Parameters Using High-bandwidth Digital Sampling Oscilloscopes

July 1, 2000

Author(s)

Nicholas Paulter, Donald R. Larson

Errors in the time-base of digital sampling oscilloscopes (samplers) will cause errors in the reported pulse parameters of the sampler-acquired waveforms and...

Temperature Effects on the High Speed Response of Digitizing Sampling Oscilloscopes

July 1, 2000

Author(s)

Donald R. Larson, Nicholas Paulter

We describe the effects of temperature on the performance of 20 GHz and 50 GHz digital sampling oscilloscopes and high speed pulse generators. The temperature...

SIMnet: An Internet-Based Video Conferencing System Supporting Metrology

July 1, 2000

Author(s)

William E. Anderson, Nile M. Oldham, Mark E. Parker

SIMnet is a computer network implemented in 1999 to facilitate international comparisons, and foster collaborations between national metrology laboratories in...

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...

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