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Search Publications

NIST Authors in Bold

Displaying 501 - 525 of 609

Hierarchical Control and Performance Evaluation of Multi-Vehicle Autonomous Systems

May 4, 2005
Author(s)
Stephen B. Balakirsky, Christopher J. Scrapper Jr, Elena R. Messina
This paper will describe how the Mobility Open Architecture Tools and Simulation (MOAST) framework can facilitate performance evaluations of RCS compliant multi-vehicle autonomous systems. This framework provides an environment that allows for simulated

Systems Engineering in the Product Lifecycle

May 1, 2005
Author(s)
Conrad E. Bock
This article introduces basic elements of systems engineering that are useful in managing the product lifecycle, as expressed in an extension to the Unified Modeling Language. Models are described for product requirements in textual and computable form

A Model Driven Standards Process

April 1, 2005
Author(s)
Arthur Griesser
Explains how and why UML models fit into a robust formal standardization process based on the best practices of software development.

Design Optimization for a Parallel MEMS Mechanism with Flexure Joints

October 4, 2004
Author(s)
Byoung H. Kang, J Wen, Nicholas Dagalakis, Jason J. Gorman
This paper presents an analysis tool and design method forMEMS parallel mechanisms. Due to processing constraints inMEMS fabrication, flexure joints are frequently used in MEMSmechanisms. Flexure joints offer advantages over other joint designdue to their

NIST's Logistics Integration Solutions

September 1, 2004
Author(s)
Sharon J. Kemmerer
The NIST Manufacturing Interoperability Program staff has years of experience developing standards, validating solutions, and providing interoperability results in the field of manufacturing. Building on this experience, NIST can: (1) Work with industry to

Analysis and Design of Parallel Mechanisms with Flexure Joints

July 15, 2004
Author(s)
Byoung H. Kang, J Wen, Nicholas Dagalakis, Jason J. Gorman
Flexure joints are frequently used in precision motion stages and micro-robotic mechanisms due lo their monolithic construction. The joint compliance, howeyer, can affect the static and dynamic performance of the overall mechanism. In this paper, we

From Databooks to Online Dictionaries and Parts Catalogues

January 5, 2004
Author(s)
John V. Messina, James A. St Pierre
This power point presentation was presented at the 4th Annual ECCMA Membership Conference at Lehigh University on October 22nd, 2003 during a panel presentation on competitive sourcing, parts interoperability, and inventory visibility in public sector

Smart Machining Research at the National Institute of Standards and Technology

September 23, 2003
Author(s)
Kevin K. Jurrens, Johannes A. Soons, Robert W. Ivester
This paper presents an overview of collaborative research activities conducted by staff of the Manufacturing Engineering Laboratory at the National Institute of Standards and Technology to address the enabling metrology and standards infrastructure needed

User's Manual for Version 1.0 of the NIST DME Interface Test Suite for Facilitating Implementations of Version 1.1 of the I++ DME Interface Specification

August 21, 2003
Author(s)
John A. Horst, Thomas R. Kramer, Joseph A. Falco, Keith A. Stouffer, Hui-Min Huang, Frederick M. Proctor, Albert J. Wavering, Chengying Liu
This user's manual describes version 1.0 of the NIST Dimensional Measuring Equipment (DME) interface test suite intended to support implementations of version 1.1 of the I++ DME specification.

Integrated Product and Process Data for B2B Collaboration

August 1, 2003
Author(s)
Boonserm Kulvatunyou, Nenad Ivezic, R A. Wysk, Albert W. Jones
Collaborative development of engineered products in a business-to-business (B2B) environment will require more than just the selection of components from an on-line catalogue. It will involve the electronic exchange of product, process, and production

UML Without Pictures

August 1, 2003
Author(s)
Conrad E. Bock
This article reviews the primary concepts of repository-centered development with the Unified Modeling Language, explaining the relation between notation, semantics, and model compilation. It highlights UML's approach to semantics, and flexibility in

UML 2 Activity and Action Models

July 1, 2003
Author(s)
Conrad E. Bock
This is the first in a series introducing the activity model in the Unified Modeling Language, version 2 (UML 2), and how it integrates with the action model [1]. The series is a companion to the standard, providing additional background, rationale

Test Procedures for Electric Motors Test Under 10 CFR Part 431

September 3, 2002
Author(s)
Ken L. Stricklett, M Vangel
The procedures for electric motor efficiency testing promulgated by Part 431 of Chapter II of Title 10, Code of Federal Regulations are discussed. The operating characteristics of the sampling plans for certification and enforcement testing are presented

An International Comparison of 50/60 Hz Power (1996-1999)

April 1, 2001
Author(s)
Nile M. Oldham, Thomas L. Nelson, R. Bergeest, G. Ramm, R. Carranza, A. C. Corney, M. Gibbes, Gregory Kyriazis, H. Laiz, L. X. Liu, Z. Lu, U. Pogliano, K. E. Rydler, E. Shapiro, E. So, M. Temba, P. Wright
An international comparison of 50/60 Hz power is described. The traveling standard was an electronic power transducer which was tested at 120 volts, 5 amperes, 53 hertz, at five power factors (1.0, 0.5 lead, 0.5 lag, 0.0 lead, and 0.0 lag). Fifteen

International Comparison of 50/60 Hz Power (1996-1999)

May 1, 2000
Author(s)
Nile M. Oldham, Thomas L. Nelson, R. Bergeest, R. Carranza, M. Gibbes, K Jones, Gregory Kyriazis, H. Laiz, L. Liu, Z. Lu, U. Pogliano, K. E. Rydler, E. Shapiro, E. So, M. Temba, P. Wright
An International Comparison of 50/60 Hz Power is described. The traveling standard was an electronic power transducer which was tested at 120 volts, 5 amperes, 53 hertz, at five power factors (1.0, 0.5 lead, 0.5 lag, 0.0 lead, and 0.0 lag). Fifteen

Exposure Parameters During Studies with ELF Magnetic and Electric Fields

December 1, 1999
Author(s)
Martin Misakian
Following a brief introduction to terminology that describes power frequency and other extremely low frequency [ELF] magnetic and electric fields, a short survey is given of methods for simulating and characterizing in a laboratory setting fields

The Fallacy of Monitoring Surge Voltages: SPDs and PCs Galore

June 1, 1999
Author(s)
A. Mansoor, K. O. Phipps, Francois D. Martzloff
To support the recommendation of shifting transient monitoring from voltage surges to current surges, the paper presents experimental results as well as numerical modeling results demonstrating two mechanisms causing an apparent decrease of surge activity

Calibration of Dissipation Factor Standards

April 1, 1999
Author(s)
Eric D. Simmon, Gerald FitzPatrick, O. Petersons
Working standards for dissipation factor (D) standards obtained by connecting a shielded three-terminal capacitor in series with a shielded precision resistor have been developed for calibration purposes. Precision conductance boxes have been built for use

Extension of Voltage Range for Power and Energy Calibrations

April 1, 1999
Author(s)
O. Petersons, Thomas L. Nelson, Nile M. Oldham, Gerald FitzPatrick
A special purpose ac voltage divider system with ratios of 600, 480, 360, 277, and 240 V to 120 V has been developed to extend the range of primary electric power calibrations from 120-600 V at 50 and 60 Hz. The developmental goal has been to realize ac
Displaying 501 - 525 of 609
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