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We describe the effects of temperature on the performance of 20 GHz and 50 GHz digital sampling oscilloscopes and high speed pulse generators. The temperature
William E. Anderson, Nile M. Oldham, Mark E. Parker
SIMnet is a computer network implemented in 1999 to facilitate international comparisons, and foster collaborations between national metrology laboratories in
Joseph R. Kinard Jr., Thomas E. Lipe Jr., Clifton B. Childers, Owen B. Laug, Jon R. Pratt
NIST is now offering broadband, ac-dc difference calibrations of current shunts from 3 A to 100 A, and at frequencies up to 30 kHz, as special tests. We present
This paper presents an overview of the low-frequency impedance measurement services offered through the Impedance Calibration Laboratory (ICL) at the National
Fiber-matrix interface strength is known to be a critical factor in controlling the long-term performance of structural composites. This parameter is often
This paper presents a novel way of examining the accuracy of the evaluation measures commonly used in information retrieval experiments. It validates several of
S Gutta, J Huang, P. Jonathon Phillips, H Wechsler
In this paper we describe the application of mixtures of experts on gender and ethnic classification of human faces, and pose classification, and show their
The NIST Torsional Dilatometer measures simultaneously the torque, axial normal force and volume change in response to a torsional deformation. While the torque
Detection and evaluation of surface cracks in metals is an important facet of nondestructive testing and evaluation (NDT&E). Cracks in bridges, aircraft wings
A H. Gomoll, A Bellare, W Fitz, T S. Thornhill, R D. Scott, P R. Jemian, Gabrielle G. Long
Poly(methyl methacrylate) (PMMA) based orthopaedic bone cements contain 1-3 micro υ size radiopacifier particles. Incomplete dispersion of these particles leads
Beverly Klemme, Timothy M. Jung, Adriaan C. Carter, Eric L. Shirley, Steven R. Lorentz, Raju V. Datla
A 1 cm collimated source has been developed and tested for calibration of detectors in the 2 m to 8 m range. This source will be used to calibrate the Transfer
J F. Widmann, S R. Charagundla, Cary Presser, Stefan D. Leigh
A phase Doppler interferometer (PDI) was used to measure the intensity (i.e., the expected number of droplets measured per unit time) of a swirling methanol
Researchers at the National Institute of Standards and Technology have proposed the development of neutral libraries of simulation components. The availability
Charles R. McLean, Swee K. Leong, Frank H. Riddick
This paper presents an overview of a neutral reference architecture for integrating distributed manufacturing simulation systems with each other, with other
Robert Allen, Ram D. Sriram, Simon Szykman, Robert J. Fijol
We report on a case study representing the design essence of a prototype ultra-high vacuum artifact transport system (ATS) in an existing design repository (DR)
This is a position paper for a workshop concerned with issues and experiences surrounding logged data for on-line communities. We briefly describe relevant
The cost of using coolant in machining industry world-wide is very high. Through a literature survey, it costs multi-billion dollars for coolant acquisition and
Conceptual process planning is a key activity for designers to evaluate manufacturability and manufacturing cost and time in the early product development stage
The CollabLogger is a visual tool that has been developed to support usability analyses of human-computer interaction in a team environment. The participants in
Charles R. McLean, Swee K. Leong, Frank H. Riddick
This paper presents an overview of a neutral reference architecture for integrating distributed manufacturing simulation systems with each other, with other
Kristine A. Bertness, J T. Armstrong, Ryna B. Marinenko, Larry Robins, Albert J. Paul, Joseph G. Pellegrino, Paul M. Amirtharaj, Deane Chandler-Horowitz
We measure the composition of AlGaAs layers during epitaxial crystal growth using in situ normal-incidence optical reflectance supported by independent methods
Charles D. Fenimore, John M. Libert, Peter Roitman
Mosquito noise is a time dependent video compression impairment in which the high frequency spatial detail in video images having crisp edges is aliased
Prior studies have shown that emulsions with greater than a certain amount of water do not bum, and thus present a difficulty in applying in-situ combustion
We develop a numerical method of determining the magnitude of characteristic impedance required by causal power-normalized circuit theories from its phase using
A Deleporte, J Allgair, C Archie, G Banke, Michael T. Postek, J Schlesinger, Andras Vladar, A Yanof
The Advanced Metrology Advisory Group (AMAG) comprised of representatives from International SEMATECH consortium member companies and the National Institute of
The development of exciters for the precise calibration of accelerometers requires minimizing distortion and cross motion in the exciter (shaker). It is well
Catherine A. Remley, Dylan F. Williams, Donald C. DeGroot
We extend previously developed oscilloscope sampler models to include realistic circuit characteristics and use these models to investigate the nose-to-nose
I address the issue of the definition and measurement of noise figure and parameters to characterize multiport devices, particularly differential amplifiers. A
Static gravimetric and static volumetric gas flow standards are both affected by uncertainty components related to the measurement of the change of mass of gas