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Displaying 16651 - 16675 of 74178

Experimental and Numerical Investigation on the Effect of Cooling/Heating Rate on the Freeze-Thaw Behavior of Mortar Containing Deicing Salt Solution

June 3, 2015
Author(s)
Yaghoob Farnam, Hadi S. Esmaeeli, Dale P. Bentz, Pablo Zavattieri, Jason Weiss
In North America, some concrete pavements and sidewalks have shown severe damage during freezing. Research has been performed to better understand the cause of damage. A test method (called longitudinal guarded comparative calorimeter (LGCC)) has been

Fetal magnetocardiography measurements with a multichannel microfabricated atomic magnetometer array

June 3, 2015
Author(s)
Svenja A. Knappe, Orang Alem, Tilmann H. Sander, Rahul R. Mhaskar, John LeBlanc, Hari Eswaran, Uwe Steinhoff, Yoshio Okada, John E. Kitching, Lutz Trahms
Following the rapid progress in the development of atomic magnetometer technology for the measurement of magnetic fields in the femtotesla range, a successful assembly of individual sensors into an array of nearly identical sensors is within reach. The

Guide to Industrial Control Systems (ICS) Security

June 3, 2015
Author(s)
Keith A. Stouffer, Victoria Y. Pillitteri, Suzanne Lightman, Marshall Abrams, Adam Hahn
This document provides guidance on how to secure Industrial Control Systems (ICS), including Supervisory Control and Data Acquisition (SCADA) systems, Distributed Control Systems (DCS), and other control system configurations such as Programmable Logic

Quasi-Two-Dimensional Spin and Phonon Excitations in La 1.965 Ba 0.035 CuO 4

June 3, 2015
Author(s)
J. J. Wagman, Daniel E. Parshall, M. B. Stone, A. T. Savici, Yang Zhao, H. A. Dabkowska, B. D. Gaulin
We present time-of-flight inelastic neutron scattering measurements of La 1.965Ba 0.035Cu) 4 (LBCO), a lightly doped member of the high temperature superconducting La-based cuprate family. By using time-of-flight neutron instrumentation coupled with single

Automated Guided Vehicle Bumper Test Method Development

June 2, 2015
Author(s)
Richard J. Norcross, Roger V. Bostelman, Joseph A. Falco
The National Institute of Standards and Technology (NIST) is developing test methods for contact bumpers used on Automated Guided Vehicles (AGVs) as basis for safety standards. This paper describes proposed test methods, force measurements for contact

Designing a Cyber-Physical Cloud Computing Architecture

June 2, 2015
Author(s)
Eric D. Simmon, Sulayman Sowe, Koji Zettsu
In this era of inter-connectivity where almost everybody, everything, and anything are networked, Cyber-Physical Systems (CPS) also known as the Internet of Things (IoT) have emerged as vital systems that use information systems to observe and modify the

Impact of Decision and Allocation Rules on Selection Decisions

June 2, 2015
Author(s)
Dennis D. Leber, Jeffery W. Herrmann
The quality of a selection decision is a function of the decision rule used and the data collected to support the decision. When physical measurements are the basis of the decision data, the measurement sampling scheme controls measurement uncertainty and

Internal Magnetic Structure of Nanoparticles Dominates Time-Dependent Relaxation Processes in a Magnetic Field

June 2, 2015
Author(s)
Cindi L. Dennis, Kathryn L. Krycka, Julie Borchers, Ryan D. Desautels, Johan van Lierop, Natalie F. Huls, Andrew J. Jackson, Cordula Gruettner, Robert Ivkov
Time-dependent relaxation of nanomagnets, such as magnetic nanoparticles, have applications in many disciplines of science and technology because these magnets can exhibit hysteresis and loss power when exposed to AC magnetic fields. In particular, the

Nanometer level sampling and control of a scanning electron microscope

June 2, 2015
Author(s)
Bradley N. Damazo, Andras Vladar, Olivier M. Marie-Rose, John A. Kramar
The National Institute of Standards and Technology (NIST) is developing a specialized, metrology scanning electron microscope (SEM), having a metrology sample stage measured by a 38 picometer resolution, high-bandwidth laser interferometer system. The

Superconducting Transition Edge Sensors for Quantum Optics

June 2, 2015
Author(s)
Thomas Gerrits, Adriana E. Lita, Brice R. Calkins
High efficiency single-photon detectors allow novel measurements in quantum information processing and quantum photonic systems. The photon-number resolving transition edge sensor (TES) is known for its near-unity detection efficiency and has been used in
Displaying 16651 - 16675 of 74178