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Displaying 32251 - 32275 of 74071

Comments on 'Bayesian evaluation of comparison data' by Ignacio Lira

January 1, 2007
Author(s)
Raghu N. Kacker, Blaza Toman
A recent paper by Ignacio Lira in Metrologia 43 (2006) S231-S234 addresses a well-known problem in combining information from interlaboratory evaluations. Lira presents an expression, which he claims to be the kernel of a Bayesian posterior probability

Comparison of Optical and Stylus Methods for Measurement of Rough Surfaces

January 1, 2007
Author(s)
Theodore V. Vorburger, H G. Rhee, Thomas B. Renegar, Jun-Feng Song, Xiaoyu A. Zheng
Abstract Optical methods are increasingly used for measurement of surface texture, particularly for areal measurements where the optical methods are generally faster. A new Working Group under Technical Committee (TC) 213 in the International Organization

Complex permittivity measurements of planar building materials using a UWB free-field antenna measurement system

January 1, 2007
Author(s)
Ben N. Davis, Chriss A. Grosvenor, Robert T. Johnk, David R. Novotny, James R. Baker-Jarvis, Michael D. Janezic
Building materials are often incorporated into complex, multi-layer macrostructures that are simply not amenable to measurements using coax or waveguide sample holders. In response to this, an ultra-wideband free-field measurement system has been developed

Convective Instabilities in Two Liquid Layers

January 1, 2007
Author(s)
Geoffrey B. McFadden, Sam R. Coriell, Katharine F. Gurski, David Cotrell
We perform linear stability calculations for horizontal fluid bilayers, taking into account both buoyancy effects and thermocapillary effects in the presence of a vertical temperature gradient. To help understand the mechanisms driving the instability we

Data-Based Models for Global Temperature Variations

January 1, 2007
Author(s)
Bert W. Rust, Barend J. Thijsse
This paper presents two data-based models for the measured time series of global annual average tropospheric temperatures. One model is a smoothing spline fit designed to give an optimal separation of signal from noise. The other combines an optimal spline
Displaying 32251 - 32275 of 74071