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Displaying 48376 - 48400 of 73829

A Bandwidth Guaranteed Multi-Access Protocol for WDM Local Networks

January 1, 2000
Author(s)
J S. Choi, Nada T. Golmie, David H. Su
In this paper, we propose a bandwidth guaranteed multi-access protocol for broadcast-and-select WDM local networks with a star topology. The proposed protocol is based on a combination of contention and reservation mechanisms for time slotted WDM networks

A Comparison of Aluminum Nitride Freely Nucleated and Seeded on 6H-Silicon Carbide

January 1, 2000
Author(s)
J H. Edgar, Larry Robins, S E. Coatney, L Liu, J Chaudhuri, K Ignatiev, Z J. Rek
The crystal structure and optical properties of AlN single crystals prepared by the sublimation-recondensation method were analyzed by cathodoluminescence (CL) spectroscopy, Raman spectroscopy, and synchrotron white-beam x-ray topography (SWBXT). Needles

A Comparison of ITS-90, Above the Silver Point, as Realised by NIST and NPL

January 1, 2000
Author(s)
Graham Machin, Charles E. Gibson, B. Carol Johnson, Howard Yoon
A comparison of the radiance temperature scales between 1000 C and 2700 C has been performed between the National Physical Laboratory (NPL) and the National Institute of Standards and Technology (NIST). Two transfer radiation thermometers, of identical

A Conceptual Model for Pervasive Computing

January 1, 2000
Author(s)
L P. Ciarletta, Alden A. Dima
As an emerging field, pervasive computing has not had the opportunity to develop a conceptual model similar to the OSI Reference Model used to describe computer networks. Such a model would be useful to properly classify issues raised during discussion and

A Fast Algorithm for Determining the Gaussian Filter Mean Line in Surface Metrology

January 1, 2000
Author(s)
Y B. Yuan, X F. Qiang, Jun-Feng Song, Theodore V. Vorburger
A fast algorithm for assessing the Gaussian filtered mean line was deduced using the central limit theorem and an approximation method. This algorithm only uses simple computer operations such as addition, subtraction and digit shifting, and avoids

A Microshear Test to Measure the Bond Between Dental Composites and Dental Substrates

January 1, 2000
Author(s)
Walter G. McDonough, Joseph M. Antonucci, Gary E. Schumacher, Y Shimada
Mechanical property tests such as the diametral tensile, uniaxial tensile, biaxial flexural, shear, and transverse strength tests are commonly used for assessing the bond that forms between dental composites and dental substrates such as dentin and enamel

A Novel Artifact for Testing Large Coordinate Measuring Machines

January 1, 2000
Author(s)
Steven D. Phillips, Daniel S. Sawyer, Bruce R. Borchardt, David E. Ward, D E. Beutel
We present a high accuracy artifact useful for the evaluation of large CMMs. This artifact can be physically probed by the CMM in contrast to conventional techniques that use purely optical methods such as laser interferometers. The system can be used over

A Practical Fiber Optic Sensor to Monitor Resin Cure and Interphase Formation

January 1, 2000
Author(s)
Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, J H. VanZanten, Joy Dunkers, Richard~undefined~undefined~undefined~undefined~undefined Parnas
A fluorescent probe, covalently grafted to glass, can be used to study the glass/resin interphase region near the surface. A blue shift in fluorescence during resin cure can be monitored when the grafted dye is immersed in epoxy. The position of the
Displaying 48376 - 48400 of 73829
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