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NIST Authors in Bold

Displaying 27326 - 27350 of 74137

Recent developments in large-scale dimensional metrology

July 30, 2009
Author(s)
G Peggs, P.G Maropoulos, E.B Hughes, Alistair Forbes, S Robson, M Ziebart, Bala Muralikrishnan
With ever-more demanding requirements for the accurate manufacture of large components, dimensional measuring techniques are becoming progressively more sophisticated. This review describes some of the more recently-developed techniques and the state-of

Symbol Representing Biometrics in Use

July 30, 2009
Author(s)
Yee-Yin Choong, Mary Theofanos, Brian Stanton
During the InterNational Committee for Information Technology Standards (INCITS) M1 task group meetings in 2008, it was recognized that there is a need for a symbol to represent that any biometrics (fingerprint, iris, photo, etc.) are in use. The symbol is

Measurement and Standards: The role of NIST

July 29, 2009
Author(s)
Kent B. Rochford
At NIST, said Dr. Rochford, "we are very broad, but we focus like a laser on measurement science." NIST also helps develop standards and promote technology. He called the institute "fairly small," with about 2,800 employees and almost that many affiliated

Overview of MSA Needs for Homeland Security

July 29, 2009
Author(s)
Charles R. McLean, Sanjay Jain, Yung-Tsun Lee
A number of modeling, simulation and analysis (MSA) efforts have evolved to support homeland security initiatives. Various organizations involved in homeland security related work have realized the value of MSA and have funded development for their

System Testing Using Use Cases for an ER Simulation Model

July 29, 2009
Author(s)
Guodong Shao
Modeling and simulation (M&S) techniques are increasingly being used to solve problems and aid decision making in many different fields. It is particularly useful for Department of Homeland Security (DHS) applications because of its feature of non

Design of a Python-based Plug-in for Benchmarking Probabilistic Fracture Mechanics Computer Codes with Failure Event Data

July 27, 2009
Author(s)
Jeffrey T. Fong, Roland deWit, Pedro V. Marcal, James J. Filliben, Nathanael A. Heckert, Stephen R. Gosselin
In a 2007 paper entitled "Application of Failure Event Data to Benchmark Probabilistic Fracture Mechanics (PFM) Computer Codes" (Simonen, F. A., Gosselin, S. R., Lydell, B. O. Y., Rudland, D. L., & Wikowski, G. M. Proc. ASME PVP Conf., San Antonio, TX

The Effect of Environmental and Mechanical Mechanisms on the Performance of Soft Body Armor

July 27, 2009
Author(s)
Gale A. Holmes, Eun S. Park, Jae Hyun Kim, Walter G. McDonough, John R. Sieber, Haruki Kobayashi, Michael A. Riley, Kirk D. Rice
The use of high performance fibers (such as, poly[(benzo-[1,2-d;5,4-d ]-benzoxazole-2,6-diyl)-1,4-phenylene]1 (PBO), ultra-high molecular weight polyethylene2 (UHMWPE), and poly(p-phenylene terephthalamide)3 (PPTA)) in soft body armor (SBA) is well

Demonstrating the Comparability of Certified Reference Materials

July 24, 2009
Author(s)
David L. Duewer, Katrice A. Lippa, Stephen E. Long, Karen E. Murphy, Katherine E. Sharpless, Lorna T. Sniegoski, Michael J. Welch
Certified Reference Materials (CRMs) enable the meaningful comparison of measurement results over time and place. When CRMs are used to calibrate or verify the performance of a measurement system, results produced by that system can be related through the

Facial Shape Analysis and Sizing System

July 24, 2009
Author(s)
Afzal A. Godil
The understanding of shape and size of the human head and faces is vital for design of facial wear products, such as respirators, helmets, eyeglasses and for ergonomic studies. 3D scanning is used to create 3D databases of thousands of humans from

Optimize Noise Filtration through Dynamical Decoupling

July 24, 2009
Author(s)
Hermann Uys, Michael J. Biercuk, John J. Bollinger
One approach to maintaining phase coherence of qubits through dynamical decoupling consists of applying a sequence of Hahn spin-echo pulses. Recent studies have shown that, in certain noise environments, judicious choice of the delay times between these

Quantitative Characterization of Quantum Dot-labeled Lambda Phage for Escherichia coli Detection

July 24, 2009
Author(s)
Peter Yim, Matthew L. Clarke, Michael McKinstry, Silvia H. De Paoli Lacerda, Leonard F. Pease III, Marina A. Dobrovolskaia, Hyeong G. Kang, David T. Read, Shanmuga Sozhamannan, Jeeseong C. Hwang
We rapidly and quantitatively detect biological pathogens by combining the specificity of bacteriophage lambda with the sensitivity of CdSe/ZnS quantum dot (QD)-based fluorescence. Specifically, QD-decorated lambda phages bind to and allow detection of

Two-Body Models for Analyzing Complex Impedance

July 24, 2009
Author(s)
Douglas A. Bennett, Robert D. Horansky, Joel N. Ullom
Complex impedance is an important and widely used technique for characterizing microbolometers and microcalorimeters. Often, complex impedance data from actual devices does not fit the simple one-body model of a TES microcalorimeter. In this paper we will
Displaying 27326 - 27350 of 74137