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Search Publications

NIST Authors in Bold

Displaying 8901 - 8925 of 73697

Multiple Changepoint Analysis of Noisy Nonlinear Data with an Application to Modeling Crack Growth in Additively Manufactured Titanium

December 5, 2019
Author(s)
Lucas N. Koepke, Jolene D. Splett, Timothy P. Quinn, Nikolas W. Hrabe, Jake T. Benzing, Michael R. Frey
Noisy measurement data pose a challenge for changepoint analysis, especially in the presence of multiple changepoints and when the model is nonlinear. We explore various approaches to estimating changepoints and their standard errors under these conditions

Output Power Maximization of a Microgenerator Using Machine Learning Approach

December 5, 2019
Author(s)
Kamran Sayrafian, Masoud Roudneshin, Amir G. Aghdam
Wearable medical sensors are one of the key components of remote health monitoring systems which allow patients to stay under continuous medical supervision away from the hospital environment. These sensors are typically powered by small batteries which

Structural and Optical Properties of Ba3(Nb6-xTax)Si4O26 (x=0.6, 1.8, 3.0, 4.2, 5.4)

December 5, 2019
Author(s)
Winnie K. Wong-Ng, Guangyao Liu, Weifang Liu, Yuqi Yang, Shouyu Wang, Yucheng Lan, James A. Kaduk
Structure and optical properties have been successfully determined for a series of titanium- and cobalt-containing layered alkaline-earth silicate compounds, Ba3(Nb1-xTax)Si4O26 (x=0.6, 1.8, 3.0, 4.2, 5.4). The structure of this solid solution was found to

Software to Report Product and Manufacturing Information in QIF Files

December 4, 2019
Author(s)
Robert R. Lipman
The QIF PMI Report (QPR) software generates a spreadsheet from a Quality Information Framework (QIF) file containing Product and Manufacturing Information (PMI). QIF is a unified XML framework standard for computer-aided quality QIF systems, available free

Election Results Common Data Format Specification Revision 2.0

December 3, 2019
Author(s)
John P. Wack
This publication describes an election results common data format specification for pre-election setup information and post-election results reporting. It contains a UML model of the election data and an XML format derived from the UML model. It also

2019 Topical Meeting on Optical Interference Coatings: Manufacturing Problem Contest

December 2, 2019
Author(s)
Catherine C. Cooksey, Daniel Poitras, Li Li, Michael Jacobson
For the Seventh Manufacturing Problem contest, participants were asked to fabricate on a provided N-BK7 substrate a challenging filter with specific s-polarization transmittance spectra at angles of incidence of 10° and 50°, covering a wavelength range

Can single-walled carbon nanotube diameter be defined by catalyst particle diameter?

December 2, 2019
Author(s)
Mauricio C. Diaz, Jiang Hua, Esko Kauppinen, Renu Sharma, Perla Balbuena
The need of designing and controlling single-walled carbon nanotube (SWCNT) properties is a challenge in a growing nanomaterials-related industry. Recently, great progress has been made experimentally to selectively control SWCNT diameter and chirality

Helping Robots Stay on Target

December 2, 2019
Author(s)
Elena R. Messina, Jeremy Marvel
For decades, many manufacturers have counted on robots to tirelessly produce parts of predictable quality. One of the key attributes of robots is their repeatability, which means that their tool tip will return to the same pre-programmed location with a

Repeated Measurements with Minimally Destructive Partial-Transfer Absorption Imaging

December 2, 2019
Author(s)
Ian B. Spielman, Ana Valdes Curiel, Dimitris Trypogeorgos, Erin Marshall, Nathan Lundblad
We demonstrate partial-transfer absorption imaging as a technique for repeatedly imaging an ultracold atomic ensemble with minimal perturbation. We prepare an atomic cloud in a state that is dark to the imaging light and then use a microwave pulse to

Chapter 3: Calibration and Characterization of Optical Radiometers

December 1, 2019
Author(s)
Giuseppe Zibordi, Kenneth Voss, B. Carol Johnson, James Mueller
Procedures for calibrating and characterizing optical radiometers, including the determination of characteristics peculiar to underwater sensors, are presented in this chapter. The characterizations are considered essential to verify the compliance with

Cognitive Information Measurements: A New Perspective

December 1, 2019
Author(s)
Hamid Gharavi
From a traditional point of view, the value of information does not change during transmission. The Shannon information theory considers information transmission as a statistical phenomenon for measuring the communication channel capacity. However, in
Displaying 8901 - 8925 of 73697
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