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Displaying 43501 - 43525 of 74842

Home Smoke Alarm Tests, Test Series 2, Report of Test 4017

May 10, 2002
Author(s)
Jason D. Averill, Richard D. Peacock, Richard W. Bukowski, Paul A. Reneke
This Report of Test documents the second series of full scale tests conducted as part of research into the performance of smoke alarms. The first series of tests, conducted in a manufactured home, consisted of fifteen experiments with instrumentation

User-Centered Evaluations of Ubicomp Applications

May 8, 2002
Author(s)
Jean C. Scholtz, L Arnstein, M Kim, T Kindberg, Sunny Consolvo
As more evaluations of ubiquitous computing (ubicomp) applications are being undertaken researchers are finding that the evaluations are more difficult than those for typical desktop computing applications. In this paper, we discuss some aspects of ubicomp

Formation of Solid Electrolyte Interface on Cycled Lithium-Ion Battery Cathodes: Soft X-ray Absorption Study

May 3, 2002
Author(s)
Mahalingam Balasubramanian, James McBreen, Xiao-Qing Yang, H S. Lee, A R. Moodenbaugh, Daniel A. Fischer, Ziwen Fu, D Abraham
Lithium-ion batteries are promising candidates for hybrid electric vehicles (HEV). Batteries that exceed the requirements for HEV, as set by the Partnership for a New Generation of Vehicles (PNGV), have been designed and built. These batteries are based on

A Droplet Impact Model for Agent Transport in Engine Nacelles

May 1, 2002
Author(s)
P E. DesJardin, Cary Presser, P J. Disimile, J R. Tucker
The overall objective of this research is to gain fundamental knowledge of fire-suppression agent transport in the cluttered environments of aircraft engine nacelles (i.e., hydraulic and electrical lines, mounting brackets, etc.). A new generation of Halon

A Low Noise Latching Comparator Probe for Waverform Sampling Applications

May 1, 2002
Author(s)
David I. Bergman, Bryan C. Waltrip
A new latching comparator probe is described. The probe is being developed as part of an effort to extend voltage measurement capability in the 10 Hz to 1 MHz frequency range. The probe offers an input voltage range of ±10V, input impedance of 1 MΩ}, and

Accelerating Scientific Discovery through Computation and Visualization II

May 1, 2002
Author(s)
James S. Sims, William L. George, Steven G. Satterfield, Howard Hung, John G. Hagedorn, Peter M. Ketcham, Terence J. Griffin
This is the second in a series of articles describing a wide variety of projects at NIST that synergistically combine physical science and information science. It describes, through examples, how the Scientific Applications and Visualization Group (SAVG)

Accuracy and Reproducibility of X-Ray Texture Measurements on Thin Films

May 1, 2002
Author(s)
Mark D. Vaudin, G R. Fox, G -. Kowach
Rocking curve texture measurements were made on thin films of zinc oxide (ZnO) and platinum (Pt) using a powder x-ray diffractometer, and also, in the case of ZnO, an area detector. The intensity corrections for defocussing and other geometric factors were

Anion Reactions in Silane Plasmas

May 1, 2002
Author(s)
Alan Gallagher, A A. Howling, C Hollenstein
Previously reported and unpublished measurements of Si xH m anions and electrons in the afterglow of silane discharges are analyzed here. A model of plasma anion chemistry includes two sources of anions, two possible causes of x-x + 1 anion growth, and

Applications of Ultrafast Transient Infrared Spectroscopies

May 1, 2002
Author(s)
T Heimer, Edwin J. Heilweil
Modern techniques for performing ultrafast transient mid-infrared spectroscopy using turnable, broadband infrared probe pulses with multi-channel CCD and infrared focal plane array detection is presented. Novel application of these picosecond and

Assigning and Enforcing Security Policies on Handheld Devices

May 1, 2002
Author(s)
Wayne Jansen, Athanasios T. Karygiannis, Serban I. Gavrila, Vlad Korolev
The proliferation of mobile handheld devices, such as Personal Digital Assistants (PDAs) and tablet computers, within the workplace is expanding rapidly. While providing productivity benefits, the ability of these devices to store and transmit corporate

Atomic Oscillator Strengths by Emission Spectroscopy and Lifetime Measurements

May 1, 2002
Author(s)
Wolfgang L. Wiese, Ulf Griesmann, R Kling, J Musielok
A series of atomic oscillator strengths measurements was carried out in the last seven years at NIST with a combination of emission spectroscopy and lifetime measurements. Several light elements, specifically C, N, O, F and Ne, and two medium-heavy
Displaying 43501 - 43525 of 74842