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NIST Authors in Bold

Displaying 28351 - 28375 of 73829

Semantic-Mediation for Standards-based B2B Interoperability

June 15, 2009
Author(s)
Marko Vujasinovic, Nenad Ivezic, Boonserm Kulvatunyou, Edward J. Barkmeyer Jr., Michele Missikoff, Francesco Taglino, Zoran Marjanovic, Igor Miletic
The authors discuss a semantic-mediation architecture to advance traditional approaches for standards-based business-to-business (B2B) interoperability. The architecture is supported by the ATHENA Knowledge Representation and Semantics Mediation tool suite

The contribution of lipid layer movement to tear film thinning and breakup

June 15, 2009
Author(s)
Geoffrey B. McFadden, Christopher Smith, Barbara A. Fink, Jason J. Nichols, Richard J. Braun
The purpose of this study is to investigate the origin of the tear film thinning between blinks, which can lead to tear film breakup and ocular surface damage. Two mechanisms of thinning are considered: "tangential flow" of the tear film along the surface

A microfabricated photonic magnetometer

June 14, 2009
Author(s)
Jan Preusser, Svenja A. Knappe, Vladislav Gerginov, John E. Kitching
A system for sensing magnetic fields is proposed, composed of an array of passive microfabricated alkali atom sensor heads coupled to a control unit using only optical interconnects. The optical coupling can be achieved by either free-space transmission of

Measuring Indoor Mobile Wireless Link Quality

June 14, 2009
Author(s)
Michael R. Souryal
This paper investigates methods for link quality measurement of an indoor, time-varying wireless link. Link quality estimates are used for a number of higher-layer functions, including rate adaptation, routing, and topology control. The objective is to

Thermoelectric and Structural Characterization of Ba2Ho(Cu3-xCox)O6+y

June 13, 2009
Author(s)
Winnie K. Wong-Ng, Z Yang, Y F. Hu, Qingzhen Huang, Nathan Lowhorn, Makoto Otani, James A. Kaduk, Martin L. Green, Q Li
The search for thermoelectric materials for power generation and for solid-state cooling have led to the increased interest of layered cobalt-containing oxides because of their thermal stability at high temperature and their desirable thermoelectric

Building Occupant Safety Research 2008

June 12, 2009
Author(s)
Richard D. Peacock, Jason D. Averill, Erica D. Kuligowski, Richard W. Bukowski
Historically, building egress systems have evolved in response to specific large loss incidents. Currently, systems are designed around a concept of providing stair capacity for the largest occupant load floor in the building with little or no

CHALLENGES AND SUCCESS FOR NEUTRON ACTIVATION ANALYSIS PROCEDURES IN VALUE ASSIGNMENT OF ANIMAL SERUM AND BOVINE LIVER STANDARD REFERENCE MATERIALS

June 12, 2009
Author(s)
Rolf L. Zeisler, Robert R. Greenberg, Elizabeth A. Mackey, Karen E. Murphy, Rabia Oflaz, Bryan E. Tomlin
Analyses for value assignment in the renewal SRMs 1598a Animal Serum and SRM 1577c Bovine Liver included extensive characterization by neutron ac-tivation analysis (NAA). For the determination of Al, V, Mn, and Cu the inter-fering reaction 31P(n,alpha)28Al

Model for Thermodynamic Properties of a Biodiesel Fuel

June 12, 2009
Author(s)
Marcia L. Huber, Eric W. Lemmon, Andrei F. Kazakov, Lisa S. Ott, Thomas J. Bruno
We present an equation-of-state approach to modeling the thermodynamic properties of a biodiesel fuel. Preliminary Helmholtz-type equations of state were developed with limited experimental data for five fatty acid methyl esters (FAMEs) that are primary

Optimal Surface-Electrode Trap Lattices for Quantum Simulation with Trapped Ions

June 12, 2009
Author(s)
Roman Schmied , Janus H. Wesenberg, Dietrich Leibfried
Trapped ions offer long internal state (spin) coherence times and strong inter-particle interactions mediated by the Coulomb force. This makes them interesting candidates for quantum simulation of coupled lattices. To this end it is desirable to be able to

Practical Applications of Nonlinear Measurements

June 12, 2009
Author(s)
Catherine A. Remley
We discuss the limitations of vector network analyzers in the measurement of nonlinear devices and circuits, including their inability to measure the relative phase between frequency components and the actual impedance in which a device is embedded. The

Stairwell Evacuation from Buildings: What We Know We Don't Know

June 12, 2009
Author(s)
Richard D. Peacock, Jason D. Averill, Erica D. Kuligowski
Occupant descent down stairwells during building evacuations is typically described by measureable engineering variables such as stairwell geometry, speed, density, and pre-evacuation delay. In turn, predictive models of building evacuation use these

Ultra-small-angle X-ray scattering at the Advanced Photon Source

June 12, 2009
Author(s)
Pete R. Jemian, Jan Ilavsky, Andrew J. Allen, Fan Zhang, Lyle E. Levine, Gabrielle G. Long
The design and operation of a versatile ultra-small-angle X-ray scattering (USAXS) instrument at the Advanced Photon Source (APS) at Argonne National Laboratory are presented. The instrument is optimized for the high brilliance and low emittance of an APS

Probing the Growth and Aging of Colloidal Cobalt Nanoparticles

June 11, 2009
Author(s)
Guangjun Cheng, Cindi L. Dennis, Robert D. Shull, Angela R. Hight Walker
We have combined transmission electron microscopy (TEM) and magnetic measurements to characterize the growth of colloidal cobalt (Co) nanoparticles during synthesis and their subsequent stability in air. During the growth, TEM measurements have shown the

Backbone Construction for Heterogeneous Wireless Ad Hoc Networks

June 10, 2009
Author(s)
Yi Qian, Hui Guo, Nader Moayeri, Kejie Lu
In this paper, we propose a backbone construction scheme over heterogeneous ad hoc networks, where the network nodes have different characteristics such as communication capacity, processing power and energy resource. Most of the wireless backbone
Displaying 28351 - 28375 of 73829
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