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Displaying 6801 - 6825 of 9858

Critically Evaluated Atomic Transition Probabilities for Sulfur S I Through S XV

November 14, 2018
Author(s)
Larissa Podobedova, Daniel E. Kelleher, Wolfgang L. Wiese
Atomic transition probabilities for about 6700 allowed and forbidden lines of S I through S XV are tabulated, based on a critical evaluation of recent literature sources. The transition probabilities were obtained mainly from recent sophisticated

A portable cold 87Rb atomic clock with frequency instability at one day in the 10 -15 range

May 21, 2018
Author(s)
Joshua J. Savory, F G. Ascarrunz, L I. Ascarrunz, Alessandro L. Banducci, M C. Delgado Aramburo, Y Dudin, Steven R. Jefferts
We present a small portable cold 87Rubidium atomic clock with frequency uncertainty of less than 𝟑 × 𝟏𝟎 −𝟏𝟓 in one day of averaging time. The clock is under development at SpectraDynamics for the Defense Advanced Research Projects Agency (DARPA) Portable

Defeating Buffer Overflow: One of the Most Trivial and Dangerous Bugs of All!

October 31, 2016
Author(s)
Paul E. Black, Irena Bojanova
The C programming language was invented over 40 years ago. It is infamous for buffer overflows. We have learned a lot about computer science, language design, and software engineering since then. As it is unlikely that we will stop using C any time soon

256-Channel Magnetic Imaging System

January 18, 2008
Author(s)
Fabio C. da Silva, Sean Halloran, Anthony B. Kos, David P. Pappas
We present the design and fabrication of a magentoresistive imaging system capable of measuring 256 channels simultaneously along linear ranges of 4 mm and 13 mm. The channels are interfaced by custom electronics and the images are displayed in real time

256-channel magnetic imaging system

January 15, 2008
Author(s)
Fabio C. Da Silva, Sean Halloran, Anthony B. Kos, David P. Pappas
We present the design and fabrication of a magnetoresistive imaging system capable of scanning 256 channels simultaneously along linear ranges of either 4 or 13 mm. High speed electronics read the channels and transfer the data to a computer that builds

Portable X-Ray Systems for Use in Bomb Identification and Interdiction

December 1, 2007
Author(s)
Nicholas G. Paulter Jr.
The NIJ Standard for Portable X-Ray Systems is a minimum performance standard as applied to the man-portable battery-powered x-ray systems for use by bomb technicians and investigators. These systems comprise the x-ray generator, the image acquisition

A Welding Data Dictionary

March 31, 2004
Author(s)
William G. Rippey
This data dictionary specifies data elements that are used to describe the design, fabrication and inspection of weldments. It comprises welding information from several authoritative sources. Data include description of component materials, details of

Colloids Reinforce Glass Theory

April 1, 2000
Author(s)
S C. Glotzer
Nobel laureate Phil Anderson wrote in Science in 1995 that the glass transition remains the deepest and most important unsolved problem in solid state physics. Why all the mystery surrounding the seemingly simple solidification of a liquid into a

Network-Centric CAD: A Research Planning Workshop

December 1, 1997
Author(s)
Simon Szykman, William Regli
These proceedings are a summary of Network-Centric CAD: A Research Planning Workshop, held on 3-4 December 1996 at the National Institute of standards and Technology in Gaithersburg, Maryland. The workshop was sponsored by Carnegie Mellon University, NIST

Benchmark for the Verification of Microwave CAD Software

December 1, 1991
Author(s)
R. Furlow, R. Y. Shimoda, Dylan Williams, Roger Marks, Kuldip Gupta
A set of microstrip structures which constitute a comprehensive benchmark for the verification of microwave Computer Aided Design (CAD) software has been developed in a collaborative effort. The benchmark is designed to exhibit a wide range of physical

Accidents and Disasters: Vulnerability in the Built Environment

August 1, 1991
Author(s)
J D. Sime
A first order model and computer program implementing previously developed procedures for estimating the speed, depth, and temperature of a fire produced gravity wave front in a corridor have been developed. The program has been incorporated into FPETOOL
Displaying 6801 - 6825 of 9858
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