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Search Publications

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Displaying 7726 - 7750 of 13218

The Role of Filtering Higher Order Reflections in Antenna Extrapolation Measurements

September 30, 2017
Author(s)
Rob Horansky, Mohit S. Mujumdar, Dylan Williams, Kate Remley, David R. Novotny, Michael H. Francis
… no test ports, and with the need to test these devices in real-world scenarios with no cable interference, … order reflections between antennas is an unnecessary step in the extrapolation method. … The Role of Filtering Higher Order Reflections in Antenna Extrapolation Measurements …

NIST Ballistics Toolmark Research Database

December 5, 2016
Author(s)
Xiaoyu Alan Zheng, Johannes A. Soons, Robert M. Thompson
… application of three-dimensional surface topography data in firearms identification. The database contains traditional …

Flat Versus Hierarchical Information Models in PLM Standardization Frameworks

July 10, 2016
Author(s)
Sylvere Krima, Joshua Lubell
… Smart manufacturing requires digital product data to be shared and … add new information structures to an existing data model in a controlled manner. A PLM information model may be either … Flat Versus Hierarchical Information Models in PLM Standardization Frameworks …

Flat versus Hierarchical Information Models in PLM Standardization Frameworks

July 10, 2016
Author(s)
Sylvere Krima, Joshua Lubell
… Smart manufacturing requires digital product data to be shared and … add new information structures to an existing data model in a controlled manner. A PLM information model may be either … Flat versus Hierarchical Information Models in PLM Standardization Frameworks …

HYBRID Bi-Directional Flexure Joint

April 14, 2014
Author(s)
Vincent D. Lee, James M. Gibert, John C. Ziegert
… Flexural bearing joints are utilized in precision mechanisms that require repeatable and friction … exist numerous embodiments of a flexural bearing. The work in this paper expands the pool of existing flexure designs by … limit axial deflection, while still permitting it to bend in and out of plane. Additionally, the elastomer provides …

Methods for Performance Evaluation of Single Axis Positioning Systems: A New Standard

October 25, 2013
Author(s)
Ronnie R. Fesperman Jr., Nathan Brown, Kevin Elliott, Jonathan D. Ellis, Axel Grabowski, Steve Ludwick, Serge Maneuf, Brian O'Connor, Shane Woody
… linear and angular positioning systems are being used in emerging micro- and nanotechnology applications. Measuring … the performance of single axis positioning systems. In this paper, we discuss factors affecting the accurate … and the new test methods being considered for inclusion in this standard are briefly described. …

Inferring Intention Through State Representations in Cooperative Human-Robot Environments

June 7, 2013
Author(s)
Craig I. Schlenoff, Anthony Pietromartire, Zeid Kootbally, Stephen B. Balakirsky, Thomas R. Kramer, Sebti Foufou
… In this paper, we describe a novel approach for inferring … are represented by a combination of spatial relationships in a Cartesian frame along with cardinal direction … to known intentions. This approach is applied to a manufacturing kitting operation, where humans and robots are …

The Forthcoming IEEE Standard 1696 on Test Methods for Characterizing Circuit Probes

May 6, 2013
Author(s)
Nicholas Paulter, John Jendzurski, Mike McTigue, Bill Hagerup, Thomas E. Linnenbrink
… and Measurement Society initiated a new standards activity in 2006 for the development of test methods to characterize … one or two models of oscilloscopes. The probes considered in this standard are all active high-input impedance devices. … signal measuring performance parameters are considered in the P1696. The crux to accurate measurements of the …

Ultrasonic Detection of Defects in Multilayered Ceramic Capacitors for Active Implantable Medical Devices

August 8, 2011
Author(s)
Sudook A. Kim, Ward L. Johnson, Grady S. White, Roger Roberts
… that affect the reliability of capacitors incorporated in active implantable medical devices. Measurements were made on capacitors in the as-manufactured condition and after exposure to a … focused-ion-beam (FIB) milling of a linear flaw. Changes in RUS spectra induced by the indentations and FIB flaw were …

TSOM Method for Semiconductor Metrology

April 18, 2011
Author(s)
Ravikiran Attota, Ronald G. Dixson, John A. Kramar, James E. Potzick, Andras Vladar, Benjamin D. Bunday, Erik Novak, Andrew C. Rudack
… typical using Scatterometry, SEM and AFM. TSOM can be used in both reflection and transmission modes and is applicable … roughness measurements, and nanoscale movements of parts in MEMS/NEMS. Industries that could benefit include … potentially significant savings and yield improvements in manufacturing. …

New approach to calibrate the mortar flow table

January 27, 2011
Author(s)
Chiara F. Ferraris, Haleh Azari
… This flow table is identical to commercial versions used in practice, and the values obtained with this flow table are … values that are used to calibrate all the flow tables in the United States (USA). This procedure is an empirical …

Investigating the Unique Properties of Cuphea Derived Biodiesel with the Advanced Distillation Curve Method

May 17, 2010
Author(s)
Tara Lovestead, Bret Windom, Thomas J. Bruno
… lubricant compared to petroleum-derived diesel fuels. In this paper, we compare the biodiesel fuel properties from … and use the composition channel to characterize the curves in terms of composition and available energy content. This … suitability of feedstocks designed for the production and manufacturing of biodiesel fuel to enhance or extend current …

Progress Toward Corrugated Feed Horn Arrays in Silicon

December 16, 2009
Author(s)
Joseph W. Britton, Ki W. Yoon, James A. Beall, Daniel T. Becker, Hsiao-Mei Cho, Gene C. Hilton, Michael D. Niemack, Kent D. Irwin
… monolithic arrays of corrugated feed horns fabricated in silicon for dual-polarization single mode operation at 90, … described. Feed horn arrays made of silicon may find use in polarization anisotropy measurements of the cosmic … Progress Toward Corrugated Feed Horn Arrays in Silicon …

Semiconducting Thienothiophene Copolymers: Design, Synthesis, Morphology and Performance in Thin Film Organic Transistors

March 1, 2009
Author(s)
Iain McCulloch, Martin Heeney, Michael L. Chabinyc, Dean DeLongchamp, Regis J. Kline, Michael Colle, Warren Duffy, Daniel A. Fischer, David J. Gundlach, Behrang Hamadani, Rick Hamilton, Lee J. Richter, Alberto Salleo, Martin Shkunov, David Sparrowe, Steve Tierney, Weimin Zhang
… are emerging as a viable alternative to amorphous silicon in a range of thin film transistor devices. , With the … processable materials achieving charge carrier mobilities in excess of 0.5 cm2/Vs, a benchmark value for amorphous … achieved amongst the highest charge carrier mobilities in solution processed transistor devices. In this progress …

IR Spectral Characterization of Customer Blackbody Sources: First Calibration Results

October 16, 2008
Author(s)
Sergey Mekhontsev, Mart Noorma, A Prokhorov, Leonard Hanssen
… We summarize recent progress in our infrared (IR) spectral radiance metrology effort. In support of customer blackbody characterization, a … of the spectral radiance scale has been undertaken in the temperature range of 232 C to 962 C and spectral range …

NEW PRACTICAL METHOD FOR MEASUREMENT OF HIGH-POWER LEDS

October 1, 2008
Author(s)
Yuqin Zong, Yoshihiro Ohno
… measurement results using existing measurement facilities in the lighting industry. Furthermore, by using this new … the heat sink surface are also determined at the same time in addition to the optical quantities. … The CIE Expert Symposium 2008 on Advances in Photometry and Colorimetry …

Microfluidic DNA Analysis Systems for Forensic Applications

July 18, 2008
Author(s)
Michael Gaitan, Jayna J. Shah, Darwin Reyes-Hernandez, Pierre-Alain Auroux, Jon Geist, Laurie E. Locascio, Wyatt N. Vreeland, David J. Ross, Peter Vallone, Paul Smith, Nicole Morgan, Tom Pohida, John Kakareka, Annelise Barron
… microfluidics-based forensic systems are implemented in silica (glass) because the materials and protocols for its … their introduction requires a significant investment in basic research on fabrication and testing protocols. The … required, and reduce contamination. This will enable manufacturing methods and measurement protocols that can be …

Interfacial Characterization of Multiple Layer Coatings on Thermoplastic Olefins (TPO)

May 30, 2008
Author(s)
Aaron M. Forster, Chris A. Michaels, Justin Lucas, Li Piin Sung
… a good paint/TPO bond. The interphase between each layer in a coated TPO coupon was investigated using a combination … by using three different CPOs exposed to two different manufacturing methods for the same TPO and base/clear coat … lateral resolution of both techniques. A gradient in the modulus through the thickness of the clear coat was …
Displaying 7726 - 7750 of 13218
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