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Displaying 801 - 825 of 1947

An optical frequency comb for infrared spectrograph calibration

November 17, 2010
Author(s)
Gabriel G. Ycas, Franklyn J. Quinlan, Steve Osterman, Gillian Nave, Craig J. Sansonetti, Scott A. Diddams
Detection of extrasolar planets by measurement of the stellar radial velocity shift requires high resolution spectroscopy with long term stability. Presently, the primary wavelength standards in the NIR are NePt and ThAr lamps and absorption cells. These

Blog Track Research at TREC

June 1, 2010
Author(s)
Ian M. Soboroff, Craig Macdonald, Rodrygo Santos, Iadh Ounis
The TREC Blog track aims to explore information seeking behaviour in the blogosphere, by building reusable test collections for blog-related search tasks. Since, its advent in TREC 2006, the Blog track has led to much research in this growing field, and

Uncertainty Budgeting for Range Calibration

May 10, 2010
Author(s)
Ruediger Kessel, Raghu N. Kacker, Klaus-Dieter Sommer
The Guide to the Expression of Uncertainty (GUM) in Measurement established a general procedure to evaluate measurement uncertainty. The Guide covers only the evaluation of a single result or a set of results. Modern measurement instruments and procedures

Absolute transition probabilities for 559 strong lines of neutral cerium

June 17, 2009
Author(s)
John J. Curry
Absolute radiative transition probabilities are reported for 559 strong lines of neutral cerium covering the wavelength range 340 nm to 880 nm. These transition probabilities are obtained by scaling published relative line intensities\cite{MCS75} with a

Development of the Atomic and Molecular Data Markup Language for Internet Data Exchange

October 16, 2008
Author(s)
Y Ralchenko, R Clark, D Humbert, David R. Schultz, T Kato, Y J. Rhee
Accelerated development of the Internet technologies, including those relevant to the atomic and molecular physics, poses new requirements for the proper communication between computers, users and applications. To this end, a new standard for atomic and

Securing External Computers and Other Devices Used by Teleworkers

December 19, 2007
Author(s)
Shirley M. Radack
This bulletin summarizes the recommendations developed by NIST to help workers secure their external devices that they need for teleworking. The bulletin covers background information on telework technologies and the security issues related to the use of

Characterization of Electrically Active Defects in High-K Gate Dielectrics By Using Low Frequency Noise, Charge Pumping, and Fast Id-Vg measurements

September 30, 2007
Author(s)
Hao Xiong, Dawei Heh, Moshe Gurfinkel, Qiliang Li, Yoram Shapira, Curt A. Richter, Gennadi Bersuker, Choi Rino, John S. Suehle
The electrically active defects in High-k/SiO2 dielectric stacks are examined using a combination of low frequency noise (LFN), charge pumping (CP), and ultra fast Id-Vg methods. The volume trap profile in the stacks is obtained by modeling the drain

RF, Analog, and Mixed Signal Technologies for Communication ICs - An ITRS Perspective

October 10, 2006
Author(s)
Margaret Huang, Herbert S. Bennett, Julio Costa, Peter Cotrell, Anthony A. Immorlica, Jan-Erik Meuller, Charles E. Weitzel, Marco Racaneli, Hisashi Schichijo, Bin Zhao
The International Technology Roadmap for Semiconductor (ITRS) Radio Frequency and Analog/Mixed-Signal (RF and AMS) Wireless Technology Working Group (TWG) addresses device technologies for wireless communications covering both silicon-based and III-V

Response to Fire Exposure of the Pentagon Structural Elements

August 1, 2005
Author(s)
Paul K. Mlakar, D O. Dusenberry, J R. Harris, G A. Haynes, Long Phan, M A. Sozen
An overview of fire damage sustained by the Pentagon structural elements in the September 11, 2001, terrorist attack is provided. The fire intensity in some compartments of the affected areas inside the Pentagon was approximated to be between those of the

UML 2 Activity and Action Models, Part 3: Control Nodes

January 1, 2004
Author(s)
Conrad E. Bock
This is the third in a series introducing the activity model in the Unified Modeling Language, version 2 (UML 2), and how it integrates with the action model. The previous article addressed the execution characteristics of actions in general, and

Optical Manipulation of Atoms at the Nanoscale

August 11, 2003
Author(s)
William D. Phillips
These notes are to provide an outline of a lecture presented at the Enrico Fermi Summer School at Nanoscale Science, held in Varenna in July 2000. They are not intended as a complete account of that lecture, but as an indication of the topics covered and a

Low Angle Grain Boundary Dewetting in Sapphire

August 1, 2001
Author(s)
B Hockey, M K. Kang, Sheldon M. Wiederhorn, J Blendell
The structure and composition of low angle grainboundaries produced in sapphire by a liquid phase sintering process were investigated by conventional and high resolution transmission electron microscopy (CTEM and HRTEM, respectively). Considering the

Quantum Electrodynamics in the Dark

August 1, 2001
Author(s)
John D. Gillaspy
Perhaps they're just shy, but heavy atoms seem very uncomfortalbe when most of their electrons are stripped off. In order to cover their nakedness as quickly as possible, they aggressively try to steal electrons from any source they encounter. Their

CIO Cyber Security Notes

July 19, 2000
Author(s)
J E. Frye
The CIO Cyber Security Notes will be published six times a year and distributed to the senior-level CIOs and senior-level executives within the Federal government. Its purpose is to heighten awareness of cyber security trends and issues. It will report

Laser Focused Atomic Deposition

January 1, 1994
Author(s)
Jabez J. McClelland, R E. Scholten, R Gupta, Robert Celotta
We demonstrate the use of a standing-wave laser beam to focus chromium atoms as they deposit onto a silicon surface. A permanent array of Cr lines has been fabricated with line width 65 nm, spacing 213 nm, and height 34 nm. The array covers an area of 0.4
Displaying 801 - 825 of 1947
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