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Displaying 9026 - 9050 of 73881

Formalizing ISA-95 Level 3 Control with Smart Manufacturing System Models

December 23, 2019
Author(s)
Leon F. McGinnis
Achieving the vision of "smart manufacturing and "Industrie 4.0" requires building on successes in computational control of processes to create generic approaches for management of manufacturing operations, or smart manufacturing operations management

Targeted chemical pressure yields tuneable millimetre-wave dielectric

December 23, 2019
Author(s)
Natalie M. Dawley, Eric J. Marksz, Aaron Hagerstrom, Gerhard H. Olsen, Megan E. Holtz, Jingshu Zhang, Chris Long, Craig Fennie, David A. Muller, Darrell G. Schlom, James Booth, Nate Orloff
Tunable dielectrics are key constituents for emerging high-frequency devices in telecommunications—including tunable filters, phase shifters, and baluns—and for miniaturizing frequency-agile microwave and millimeter-wave components. Today, strained films

Calibration of free-space and fiber-coupled single-photon detectors

December 20, 2019
Author(s)
Thomas Gerrits, Alan L. Migdall, Joshua C. Bienfang, John H. Lehman, Sae Woo Nam, Jolene D. Splett, Igor Vayshenker, Chih-Ming Wang
We measure the detection efficiency of single-photon detectors at wavelengths near 851 nm and 1533.6 nm. We investigate the spatial uniformity of one free-space-coupled single-photon avalanche diode and present a comparison between fusion-spliced and

Milliwatt-threshold visible-telecom optical parametric oscillation using silicon nanophotonics

December 20, 2019
Author(s)
Xiyuan Lu, Gregory Moille, Anshuman Singh, Qing Li, Daron Westly, Ashutosh Rao, Su P. Yu, Travis Briles, Scott Papp, Kartik Srinivasan
The on-chip creation of coherent light at visible wavelengths is of interest to many applications in spectroscopy, sensing, and metrology. Towards that goal, here we propose and demonstrate the first on-chip visible-telecom optical parameteric oscillator

Dynamic Compression Tests of Alumina Dumbbells Using a Spherical Joint

December 19, 2019
Author(s)
Richard Rhorer, George D. Quinn, Steven Mates
The dynamic compressive strength of ceramic armor materials is difficult to obtain experimentally due to the sensitivity of fracture strength to even small bending stresses. In this work we introduce a spherical joint into a compression Kolsky bar to

Effect of Federal Incumbent Activity on CBRS Commercial Service

December 19, 2019
Author(s)
Michael R. Souryal, Thao Nguyen
Federal Communications Commission rules for the 3.5 GHz Citizens Broadband Radio Service permit commercial systems to share 150 MHz of bandwidth with federal and other incumbents. To protect the federal incumbents, a spectrum coordinator---the Spectrum

Performance Study of a GAA-GAA Coexistence Scheme in the CBRS Band

December 19, 2019
Author(s)
Weichao Gao, Anirudha Sahoo
The General Authorized Access (GAA) users in the Citizens Broadband Radio Service (CBRS) band are the lowest priority users who not only have to make sure that they do not cause harmful interference to the higher tier users but also must cooperate with

Point-Node Gap Structure of Spin-Triplet Superconductor UTe 2

December 19, 2019
Author(s)
Tristin Metz, Seokjin Bae, Sheng NMN Ran, I-Lin Liu, Yun Suk Eo, Wesley T. Fuhrman, Daniel F. Agterberg, Steven M. Anlage, Nicholas Butch, Johnpierre Paglione
Low-temperature electrical and thermal transport, heat capacity and magnetic penetration depth measurements were performed on single crystals of the actinide superconductor UTe 2 to determine the structure of the superconducting energy gap. Millikelvin

Resilient Interdomain Traffic Exchange: BGP Security and DDos Mitigation

December 17, 2019
Author(s)
Kotikalapudi Sriram, Douglas C. Montgomery
In recent years, numerous routing control plane anomalies, such as Border Gateway Protocol (BGP) prefix hijacking and route leaks, have resulted in denial-of-service (DoS), unwanted data traffic detours, and performance degradation. Large-scale distributed

RF Dataset of Incumbent Radar Signals in the 3.5 GHz CBRS Band

December 17, 2019
Author(s)
Raied Caromi, Michael R. Souryal, Timothy Hall
This Radio Frequency (RF) dataset consists of synthetically generated waveforms of incumbent 3.5 GHz radar systems. The intended use of the dataset is for developing and evaluating detectors for the 3.5 GHz Citizens Broadband Radio Service (CBRS) or

The role of ICP-MS in Separation Science

December 17, 2019
Author(s)
Antonio R. Montoro Bustos
Since its introduction in the 1980s, inductively coupled plasma mass spectrometry (ICP-MS) has evolved to become arguably the most versatile and powerful technique for the elemental analysis of metals, metalloids and selected non-metals at (ultra-)trace

A transition-edge sensor-based x-ray spectrometer for the study of highly charged ions at the National Institute of Standards and Technology electron beam ion trap

December 16, 2019
Author(s)
Paul Szypryt, Galen C. O'Neil, Endre Takacs, Joseph N. Tan, Sean W. Buechele, Aung Naing, Douglas A. Bennett, William B. Doriese, Malcolm S. Durkin, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Kelsey M. Morgan, Carl D. Reintsema, Daniel R. Schmidt, Daniel S. Swetz, Joel N. Ullom, Yuri Ralchenko
We report on the design, commissioning, and initial measurements of a Transition-Edge Sensor (TES) x-ray spectrometer for the Electron Beam Ion Trap (EBIT) at the National Institute of Standards and Technology (NIST). Over the past few decades, the NIST
Displaying 9026 - 9050 of 73881
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