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Displaying 7276 - 7300 of 17268

TOWARDS THE SYNTHESIS OF PRODUCT KNOWLEDGE ACROSS THE LIFECYCLE

November 21, 2013
Author(s)
Paul W. Witherell, Boonserm Kulvatunyou, Sudarsan Rachuri
Product lifecycle management is an important aspect of today’s industry, as it serves to facilitate information exchange and management between most, if not all, stages of a product’s existence. As exchanged product information is inevitably subjected to

Time-resolved radiation beam profiles in water obtained by ultrasonic tomography

December 31, 2010
Author(s)
Eugene Malyarenko, Joseph Heyman, Heather H. Chen-Mayer, Ronald Tosh
This paper presents a practical ultrasonic system for near real-time imaging of spatial temperature distributions in water caused by absorption of radiation. Initial testing with radiation from a highly attenuated infrared lamp demonstrates that the system

Uncertainties in Electron Probe Microanalysis

March 12, 2010
Author(s)
Ryna B. Marinenko, Stefan D. Leigh
This tutorial discusses the importance of citing valid uncertainties when reporting analytical results and the need for a universally accepted approach for evaluating uncertainties. Today, the CIPM procedure has been accepted by numerous international

Precision and Accuracy of Thermal Calibration of Atomic Force Microscopy Cantilevers

January 1, 2006
Author(s)
G A. Matei, E J. Thoreson, Jon R. Pratt, David B. Newell, N A. Burnham
To have confidence in force measurements made with atomic force microscopes (AFMs), the spring constant of the AFM cantilevers should be known with good precision and accuracy, topics not yet thoroughly treated in the literature. In this study, we compared

The Measurement of Optical Frequencies

June 7, 2005
Author(s)
Leo W. Hollberg, Scott A. Diddams, A Bartels, Tara M. Fortier, Kyoungsik Kim
Even the suggestion of counting optical frequencies in the visible (~ 500 THz) must have seemed ludicrous to many in the past, because traditional methods failed to work above about 100 GHz. Nonetheless, with some vision and new ideas a few researchers had

Flexible Cryo-packages for Josephson Devices

June 1, 2005
Author(s)
Charles J. Burroughs, Samuel Benz, Paul Dresselhaus, Yonuk Chong, Hirotake Yamamori
We have developed a method of bonding superconductive integrated-circuit chips to interchangeable, microwave-compatible, flexible cryo-packages. This new 'flip-chip on flex' technology will greatly improve the service life and reliability of our Josephson

The era of coherent optical frequency references

September 29, 2004
Author(s)
Leo W. Hollberg, Christopher W. Oates, Scott Diddams, G Wilpers, A Bartels, C Hoyt, Zeb Barber
… atomic clocks, optical combs, optical frequency standards, wavelength references …

Absolute frequency measurements with a stabilized near-infrared optical frequency comb from a Cr:forsterite laser

May 16, 2004
Author(s)
Kristan L. Corwin, I Thomann, Tasshi Dennis, R W. Fox, William C. Swann, E. A. Curtis, C. W. Oates, G Wilpers, A Bartels, Sarah L. Gilbert, Leo W. Hollberg, Scott Diddams, Nathan R. Newbury, Jeffrey W. Nicholson, M. Yan
A Cr:forsterite laser-based frequency comb is stabilized simultaneously to two NIST frequency references. Methane lines from 1315 nm - 1330 nm are measured with ±2.3 MHz uncertainty. The pressure shifts are also evaluated.

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

Molecular Iodine Clock

December 1, 2001
Author(s)
Jun Ye, L -. Ma, J L. Hall
… laser optical comb, optical clock, optical frequency standards …

The Electronic Kilogram

May 1, 2001
Author(s)
Michael H. Kelley
The kilogram is the only remaining base unit in the International System of Units (SI) whose definition is based on a single physical artifact rather than on fundamental properties of nature. Effects such as environmental contamination or material loss

The IUSR Project: Industry Usability Report

August 10, 1999
Author(s)
Jean C. Scholtz
The Industry Usability Report (IUSR) Project is designed to help potential corporate purchasers of software obtain information about the usability of supplier products. There are two parts to the IUSR project: a proposed format for sharing usability

Operating Conditions for a Pulse-Quantized AC and DC Bipolar Voltage Source

June 1, 1999
Author(s)
Samuel Benz, Charles J. Burroughs, Todd E. Harvey, Clark A. Hamilton
We have developed an accurate ac and dc bipolar voltage source based on the quantized pulses of Josephson junctions. A factor-of-6 increase in output voltage over previous unipolar waveforms is achieved by generating bipolar waveforms where arrays of
Displaying 7276 - 7300 of 17268
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