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Displaying 30776 - 30800 of 74049

Ultra-low-noise all-fiber photon pair source

August 21, 2008
Author(s)
Shellee D. Dyer, Martin J. Stevens, Burm Baek, Sae Woo Nam
We demonstrate an all-fiber photon pair source with the highest coincidence-to-accidental ratio (CAR) reported to date in the fiber optic telecom C-band.

Measurement science for climate remote sensing

August 20, 2008
Author(s)
Gerald T. Fraser, Steven W. Brown, Raju V. Datla, Bettye C. Johnson, Keith R. Lykke, Joseph P. Rice
The Earth s climate is very complex and highly variable, making it difficult to measure and model small changes that occur over decadal and longer time scales. The resulting uncertainties in measurement and modeling underlie the longterm debate over the

Thermodynamic Property Values for Enzyme-catalyzed Reactions

August 20, 2008
Author(s)
Robert N. Goldberg
This chapter deals with how one can obtain values of thermodynamic properties specifically the apparent equilibrium constant K, the standard molar transformed Gibbs energy change rG, and the standard molar transformed enthalpy change rH for

3D Part Identification Based on Local Shape Descriptors

August 19, 2008
Author(s)
Xiaolan Li, Afzal A. Godil, Asim Wagan
This paper explores 3D object recognition based on local shape descriptor. 3D object recognition is becoming an increasingly important task in modern applications such as computer vision, CAD/CAM, multimedia, molecular biology, robotics, and so on

Hanbury Brown-Twiss interferometry without a beamsplitter

August 19, 2008
Author(s)
Martin J. Stevens, Eric Dauler, Burm Baek, Richard J. Molnar, Scott A. Hamilton, Karl Berggren, Richard P. Mirin, Sae Woo Nam
We demonstrate Hanbury-Brown Twiss interferometry without a beamsplitter, by employing a single-mode optical fiber coupled to a multi-element superconducting nanowire single-photon detector.

Homodyne detection of optical cat states generated by squeezed light photon subtraction

August 19, 2008
Author(s)
Thomas Gerrits, Tracy S. Clement, Scott C. Glancy, Sae Woo Nam, Richard P. Mirin, Emanuel H. Knill
We have experimentally created and measured an optical Schrödinger Cat State. The method relies on single photon subtraction off a squeezed vacuum state and conditioning a homodyne measurement on the detection of that photon.

Map Quality Assessment

August 19, 2008
Author(s)
Asim Wagan, Afzal A. Godil, Xiaolan Li
The Maps captured by robots in real environment are usually incomplete, distorted, and noisy. To evaluate the quality of these kind of maps is an important problem in the field. In this paper we present an algorithm to assess the quality of the map

Recommended List of Common Impurities for Metallic Fixed-point Materials of the ITS-90

August 18, 2008
Author(s)
Dean C. Ripple, Anatoly Pokhodun, Peter Steur, Gregory F. Strouse
Working Group 1 of the Consultative Committee for Thermometry (CCT) has recommended methods for estimating the uncertainties of fixed-point temperatures attributable to chemical impurities [1]. These methods require chemical analysis of all commonly found

Report from the Mise en Pratique Task Group: the next international temperature scale and the mise en pratique for the definition of the kelvin

August 18, 2008
Author(s)
Dean C. Ripple, Bernd Fellmuth, Joachim Fischer, Graham Machin, PPM Steur, Osamu Tamura, Rod D. White
The Consultative Committee for Thermometry has asked Working Group 1 to coordinate a task group formulating an assessment and possible work plan for the next International Temperature Scale and to prepare and maintain the mise en pratique for the

Strategies for Closing the ITRS Funding Gap

August 18, 2008
Author(s)
Yaw S. Obeng, Stephen Knight, Joaquin (. Martinez
For over 35 years, each IC generation has doubled the transistor count while cutting the cost per function in half. This progress, described by Moore's Law, has resulted primarily from scaling device dimensions and wafer size. In reality, the 'Moore's Law'

Wireless Communications in Tunnels for Urban Search and Rescue Robots

August 18, 2008
Author(s)
Catherine A. Remley, George Hough, Galen H. Koepke, Dennis G. Camell, Robert Johnk, Chriss A. Grosvenor
We report on propagation tests carried out in a subterranean tunnel to support improved wireless communications for urban search and rescue robots. We describe single-frequency and ultrawideband channel-characterization tests that we conducted, as well as

Assessing the Uncertainty Associated with Product Emission Measurements

August 17, 2008
Author(s)
Cynthia H. Reed, Steven J. Nabinger, Andrew K. Persily
Volatile organic compounds (VOCs) emitted by building materials and products have been shown to significantly impact human health and comfort. As a result, the market for low emitting building materials and products is growing rapidly. However, existing

Development of a Design Guide to Improve Building IAQ

August 17, 2008
Author(s)
Andrew K. Persily, Martha Hewett, Jude Anders, Lynn Bellenger, Ronald Burton, John Girman, Eli HowardI, Eric Werling
Building owners and developers, and the designers and contractors they employ, are faced with a variety of requirements related to building function, regulations, and environmental impacts. These professionals often address indoor air quality through

The International State of Building System Commissioning

August 17, 2008
Author(s)
Natascha S. Milesi-Ferretti, Nobuo Nakahara, Harunori Yoshida
Buildings are a major and growing source of energy consumption and as such, contribute to the significant problems associated with energy dependence and growing environmental impacts. Building system commissioning is a quality assurance process designed to

Ventilation Measurements in Selected IAQ Studies

August 17, 2008
Author(s)
Andrew K. Persily
Building and space ventilation rates are primary determinants of indoor pollutant levels and occupant exposures, and the impacts of ventilation on health and comfort have long been recognized in ventilation standards and regulations. Despite the importance

Growth, Crystal Structure, and Properties of Epitaxial BiScO3 Thin Films

August 15, 2008
Author(s)
Igor Levin, Susan Trolier-McKinstry, Michael D. Biegalski, Junling Wang, Alexei A. Belik, E. Takayama-Muromachi
Epitaxial thin films of BiScO3, a compound which is thermodynamically unstable under ambient conditions, were grown on BiFeO3-buffered SrTiO3 substrates despite the very large lattice mismatch between the film and the substrate. The epitaxial BiScO3 films

Highly charged ion (HCI) modified tunnel junctions

August 15, 2008
Author(s)
Joshua M. Pomeroy, Holger Grube
The neutralization energy carried by highly charged ions (HCIs) provides a fundamentally independent method for localizing energy on a target’s surface, producing features and modifying surfaces with fluences and kinetic energies that are negligible for
Displaying 30776 - 30800 of 74049
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