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Search Publications

NIST Authors in Bold

Displaying 41776 - 41800 of 74428

Using A Priori Data for Prediction and Object Recognition in an Autonomous Mobile Vehicle

April 25, 2003
Author(s)
Christopher J. Scrapper Jr, T. Takeuchi, Tommy Chang, Tsai Hong Hong, Michael O. Shneier
A robotic vehicle needs to understand the terrain and features around it if it is to be able to navigate complex environments such as road systems. By taking advantage of the fact that such vehicles also need accurate knowledge of their own location and

Broadband Permittivity and Loss Tangent Measurements Using a Split-Cylinder Resonator

April 24, 2003
Author(s)
Michael D. Janezic, Edward Kuester, James R. Baker-Jarvis
We summarize a theoretical model for the split-cylinder resonator, based on the mode-matching method, for performing nondestructive permittivity and loss tangent measurements with the split-cylinder resonator. This new model properly takes into account the

Heat Release Rate Tests of Plastic Trash Containers

April 24, 2003
Author(s)
D W. Stroup, Daniel M. Madrzykowski
Two experiments were conducted to characterize the potential hazard from ignition of nominal 136 L (30 gal) trash containers made from high density polyethylene (HDPE) and loaded with cellulosic debris. Heat release rate was measured as a function of time

Evaluation of Extraction Methodologies for Corn Kernal (Zea Mays) DNA for Detection of Trace Amounts of Biotechnology-Derived DNA

April 23, 2003
Author(s)
Marcia J. Holden, J L. Blasic, L Bussjaeger, C Kao, Luke A. Shokere, D C. Kendall, L Freese, G. Ronald Jenkins
Sensitivity and accurate testing for trace amounts of biotechnology-derived DNA from plant material requires pure, high-quality genomic DNA as template for subsequent amplification using the polymerase chain reaction (PCR). Six methodologies were evaluated

Governmental Approaches to Standards in World Trade

April 9, 2003
Author(s)
Roger Marks
Standards have become a critical element in world trade. Within the guidelines set by the World Trade Organization, governments have developed strategies to optimize their benefits with the world standardization system.

Spatial Methods for Event Reconstruction in CLEAN

April 9, 2003
Author(s)
Kevin Coakley, D N. Mckinsey
In CLEAN (Cryogenic Low Energy Astrophysics with Noble gases), a proposed neutrino and dark matter detector, background discrimination is possible if one can determine the location of an event with high accuracy. Here, we develop spatial methods for event

Performance-Based Fire Protection of Historical Structures

April 6, 2003
Author(s)
Richard W. Bukowski, V Nuzzolese, M Bindo
Performance-based fire protection design methods are particularly appropriate for renovation of historical and culturally significant buildings. This is because they allow the freedom to upgrade fire safety while maintaining sensitivity to the significant

Conventional Cells - Monoclinic I-& C-Centered Cells

April 3, 2003
Author(s)
Alan D. Mighell
In the selection of a centered cell in the monoclinic system, it is recommended that the experimentalist select an I-centered cell for those cases in which it is the conventional cell- a and c are coincident with the shortest two translations in the net

Interconnect Fabrication by Superconformal Iodine-Catalyzed Chemical Vapor

April 3, 2003
Author(s)
Daniel Josell, S D. Kim, Daniel Wheeler, Thomas P. Moffat, S G. Pyo
The mechanism behind superconformal filling of fine features during surfactant catalyzed chemical vapor deposition is described and the metrology required to predict it is identified and quantified. The impact of adsorbed iodine coverage on copper

A Model System for Interfacial Reactions in LTCC Materials

April 1, 2003
Author(s)
Lawrence P. Cook, Winnie K. Wong-Ng, Peter K. Schenck, Mark D. Vaudin, J Suh
Over the past decade, ceramic packaging materials have continued to increase in both chemical and structural complexity. At processing temperatures of 800 C to 900 C, the possibilities for interactions at interfaces between dissimilar materials are

A New Octahedral Tilt System in the Perovskite Phase Ca 3 Nb 2 O 8

April 1, 2003
Author(s)
L M. Cranswick, W G. Mumme, I E. Grey, Robert S. Roth, P Bordet
The perovskite-related phase Ca 3Nb 2O 8, when grown as single crystals from a calcium vanadate flux, incorporates a smallamount of vanadium from the flux to form the composition Ca 3Nb 2-xV xO 8 with x = 0.025 . The crystals have pseudo-cubicsymmetry with

A Primary Dead-Weight Tester for Pressures (0.05-1.0) MPa

April 1, 2003
Author(s)
K. Jain, Walter J. Bowers Jr., James W. Schmidt
Recent advances in technology on two fronts, 1) the fabrication of large diameter pistons and cylinders with good geometry, and 2) the ability to measure the dimensions of these components with high accuracy, have allowed dead-weight testers at NIST to

A Statistical Model for Cladding Diameter of Optical Fibers

April 1, 2003
Author(s)
Chih-Ming Wang, Timothy J. Drapela
The National Institute of Standards and Technology has developed a contact micrometer for accurate measurement of optical-fiber outer diameter. The contact micrometer is used to measure reference fibers which are artifacts used by the telecommunications

A statistical model for cladding diameter of optical fibres

April 1, 2003
Author(s)
C. M. Wang, Timothy J. Drapela
The National Institute of Standards and Technology has developed a contact micrometer for accurate measurement of the outer diameter of optical fibres. The contact micrometer is used to measure reference fibres that are artefacts used by the
Displaying 41776 - 41800 of 74428
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