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NIST Authors in Bold

Displaying 37651 - 37675 of 74129

Seven-DOF Cable-Suspended Robot with Independent Metrology

October 4, 2004
Author(s)
R L. Williams, B Snyder, James S. Albus, Roger V. Bostelman
This paper presents a new cable-suspended robot. It is a 7-cable spatial design with a closed-form forward pose kinematics solution. Applications include automated machining, construction, and sculpting. This paper presents two new ideas. First, an

Transport Coefficients and Molecular Dynamics: Altermatives

October 4, 2004
Author(s)
Raymond D. Mountain
The task of using molecular dynamics to determine the shear viscosity and the thermal conductivity of a model fluid is examined in detail for the Lennard-Jones fluid. The equilibrium time correlation function approach is compared with three nonequilibrium

TRC Thermodynamic Tables - Hydrocarbons, Supplement 128, 2004

October 4, 2004
Author(s)
Michael D. Frenkel
New tables for propylbenzene containing the density for the real fluid at selected temperatures and pressures. New table for heptylbenzene containing the density for the real fluid at selected temperatures and pressures. New table for octylbenzene

Photonic Technologies for Quantum Information Processing

October 2, 2004
Author(s)
Prem Kumar, P G. Kwiat, Alan L. Migdall, Sae Woo Nam, Jelena Vuckovic, F Wong
The last several years have seen tremendous research toward practical optical quantum information processing, including single- and entangled-photon sources and high-efficiency photon counting detectors, covering a range of wavelengths. We review some of

A Coarse/Fine Motion Control Stage; Preliminary Studies

October 1, 2004
Author(s)
H Yang, E S. Buice, T J. Fagan, Stephen J. Smith, R Hocken, D L. Trumper, Richard Seugling
We are developing a stage system, which uses a coarse/fine approach for accurate nanometer level positioning for scanning specimens over an area measuring 50 mm ? 50 mm. The completed system will comprise a short-range, 6 degree-of-freedom fine-motion

A Discussion of the IEEE Standard on Transition and Pulse Waveforms, Std-181-2003

October 1, 2004
Author(s)
Nicholas Paulter, Donald R. Larson, Jerome J. Blair
The IEEEStd-181-2003, which is a newstandard on pulse techniques and definitions, has been recently published. This standard was written to replace the withdrawn IEEE standards, Std-181-1977 and Std-194-1977. The Std-181-2003 combines information from both

Achieving Intelligent Performance in Autonomous On-Road Driving

October 1, 2004
Author(s)
Craig I. Schlenoff, J L. Evans, Anthony J. Barbera, James S. Albus, Elena R. Messina, Stephen B. Balakirsky
This paper describes NIST s efforts in evaluating what it will take to achieve autonomous human-level driving skills in terms of time and funding. NIST has approached this problem from several perspectives: considering the current state-of-the-art in

An XML Schema Naming Assister for Elements and Types

October 1, 2004
Author(s)
Puja Goyal
Providing a consistent naming convention for elements and types is essential in the creation, development, and maintenance of Extensible Markup Language (XML) schemas. It improves schema readability and consistency, consequently speeding up future schema

Application of the Josephson Effect to Metrology

October 1, 2004
Author(s)
Samuel P. Benz, Clark Hamilton
The unique ability of a Josephson junction to control the flow of magnetic flux quanta leads to a perfect relationship between frequency and voltage. Over the last 30 years, metrology laboratories have used this effect to greatly improve the accuracy of dc

Building Stones of America: 50 Years of the NIST Stone Test Wall

October 1, 2004
Author(s)
Paul E. Stutzman, J Raz
In 1880 the Census Office and the National Museum in Washington, DC conducted a study of building stones of the United States and collected a set of reference specimens from working quarries. This collection was merged with the Centennial Collection of US

Building Stones of America: Over 50 Years of the NIST Stone Test Wall.

October 1, 2004
Author(s)
Paul E. Stutzman
In 1880, the Census Office and the National Museum in Washington, D.C., conducted a study of building stones of the United States and collected a set of reference specimens from working quarries. The census that year reported descriptions of producing

Combinatorial Methods for Rapid Screening of Biomaterials

October 1, 2004
Author(s)
Carl G. Simon Jr., N Washburn, S B. Kennedy, Naomi Eidelman, Y N. Deng, Eric J. Amis
Current methods for biomaterials development involve one-specimen-at-a-time characterization which is costly and time-consuming. Combinatorial and high-throughput methods hold the potential to enhance research and development in any field of scientific

Compact Models for Silicon Carbide Power Devices

October 1, 2004
Author(s)
Ty R. McNutt, Allen R. Hefner Jr., Alan Mantooth, David W. Berning, Ranbir Singh
The development of compact silicon carbide (SiC) power semiconductor device models for circuit simulation is described. The work detailed herein has been used to model power Schottky, Merged-PiN-Schottky, PiN diode, and MOSFET models. In these models, the

Comparison of Strength Properties of Normotensive and Hypertensive Rat Pulmonary Arteries

October 1, 2004
Author(s)
Elizabeth S. Drexler, Christopher N. McCowan, J Wright, Andrew J. Slifka, Dunbar Ivy, Robin Shandas
A series of tests were conducted to quantify the difference in the mechanical properties of normo-and hypertensive pulmonary arteries. A bubble-test design was emplpoyed to measure the biaxial properties of a segment of artery. The test results compare the

Constitutive Models for a Poly(e-caprolactone) Scaffold

October 1, 2004
Author(s)
Timothy P. Quinn, Tammy L. Oreskovic, Christopher N. McCowan, N Washburn
We investigate material models for a porous, polymeric scaffold used for bone. The material was made by co-extruding poly (e-caprolactone) (PCL), a biodegradable polyester, and poly(ethylene oxide)(PEO). The water soluble PEO was removed resulting in a

Critical Review of the Current Status of Thickness Measurements for Ultrathin SiO2 on Si, Part V: Results of a CCQM Pilot Study

October 1, 2004
Author(s)
M P. Seah, S J. Spencer, F Bensebaa, I Vickridge, H Danzebrink, Michael Krumrey, T Gross, W Oesterle, E Wendler, B Rheinlander, Yasushi Azuma, I Kojima, N Suzuki, M Suzuki, Shigeo Tanuma, D W. Moon, Hansuek Lee, H Cho, H Y. Chen, A T. Wee, T Osipowicz, J S. Pan, W A. Jordaan, R Hauert, U Klotz, C van der marel, M Verheijen, Y Tamminga, C Jeynes, P Bailey, S Biswas, U Falke, Nhan Van Nguyen, Deane Chandler-Horowitz, James R. Ehrstein, D Muller, Joseph Dura

Cross-Enterprise Documents Sharing (XDS)

October 1, 2004
Author(s)
William J. Majurski
The National Software Reference Library (NSRL) of the U.S. National Institute of Standards and Technology (NIST) collects software from various sources and publishes file profiles computed from this software (such as MD5 and SHA-1 hashes) as a Reference
Displaying 37651 - 37675 of 74129