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Displaying 7301 - 7325 of 73727

PSCR 2020_Multicast and Unicast in Serving Public Safety Traffic

October 29, 2020
Author(s)
Chunmei Liu
Given a significant amount of group traffic in public safety incidents, multicast has the potential to outperform unicast in terms of precious spectrum savings and first responders’ experience. In this study and for both unicast and multicast, we explore

PSCR 2020_Non-ISSI LMR to LTE MCPTT

October 29, 2020
Author(s)
Christopher J. Walton, Chic J. O'Dell
This presentation explores a low-cost method to bridge analog public safety Land mobile radio (LMR) systems into a standards based Long Term Evolution (LTE) Mission Critical Push to Talk (MCPTT) system. Design goals include robustness, cost, and the

PSCR 2020_Pecha Kucha Portfolio Overview

October 29, 2020
Author(s)
John Beltz, Roger Blalock, Donald Bradshaw, John S. Garofolo, Joe Grasso, Scott Ledgerwood, Brianna Vendetti
The PSCR Research Portfolio Leaders provide overview presentations of the projects housed within their portfolios, using just 20 slides that showcase each for only 20 seconds. Their traditional Pecha Kucha style presentations are combined into this

PSCR 2020_PSCR Program Overview

October 29, 2020
Author(s)
Dereck R. Orr
PSCR’s Division Chief, Dereck Orr, shares an introduction to PSCR 2020: The Digital Experience and a brief overview of PSCR’s history. Attendees hear important program updates and impacts from the past year and learn more about the future focus of PSCR.

PSCR 2020_Resilient Communication Network Platform

October 29, 2020
Author(s)
Samuel L. Ray, Hien V. Nguyen
PSCR has been researching deployable communications systems for first responders since 2015. In this session, PSCR presents the latest addition to our research portfolio. Sponsored by Department of Homeland Security (DHS) Science and Technology (S&T)

PSCR 2020_Social Media Incident Streams

October 29, 2020
Author(s)
Ian M. Soboroff
The ubiquity of mobile internet-enabled devices combined with wide-spread social media use during emergencies is posing new challenges for response personnel. In particular, service operators are now expected to monitor these online channels to extract

PSCR 2020_Speech Analytics for Public Safety

October 29, 2020
Author(s)
Frederick R. Byers
Evolving applications for public safety communications sometimes rely on speech analytic technologies. These include hands-free voice interface and situational awareness systems, for example. Underlying these types of applications are speech analytic

PSCR 2020_The Evolution of Direct Mode in 3GPP

October 29, 2020
Author(s)
Richard A. Rouil
Direct Mode communication remains one of the major hurdles for transitioning from Land Mobile Radio (LMR) to broadband technology. This session will start by providing some background information on 3GPP Long Term Evolution (LTE) direct mode, called

PSCR 2020_UAS Standard Test Methods

October 29, 2020
Author(s)
Kamel S. Saidi
The session gives a brief recap of the work that NIST has been doing to help first responders use ground, air, and aquatic robots since 2001. This includes a summary of the work that has been accomplished to-date and the standards that have been published

PSCR 2020: What We Learned by Participating in a PSCR Challenge

October 29, 2020
Author(s)
Sarah L. Hughes, Todd Heinl, Felix Desourdy, Sean Hackett, Ryan Fields-Spack
This NIST publication consists of two past judges and two innovators sharing from their perspective what they learned about innovating for public safety through their participation in the Haptic Interfaces for Public Safety Challenge.

Recommendation for Stateful Hash-Based Signature Schemes

October 29, 2020
Author(s)
David Cooper, Daniel Apon, Quynh H. Dang, Michael S. Davidson, Morris Dworkin, Carl Miller
This recommendation specifies two algorithms that can be used to generate a digital signature, both of which are stateful hash-based signature schemes: the Leighton-Micali Signature (LMS) system and the eXtended Merkle Signature Scheme (XMSS), along with

Conformational gating, dynamics and allostery in human monoacylglycerol lipase

October 28, 2020
Author(s)
Sergiy Tyukhtenko, Girija Rajarshi, Ioannis Karageorgos, Nikolai Zvonok, Kiran Vemuri, Jeffrey W. Hudgens, Xiaoyu Ma, Mahmoud L. Nasr, Alexandros Makriyannis, Kyle Anderson, Jason J. Guo, Gerhard Wagner
Inhibition of human Monoacylglycerol Lipase (hMGL) offers a novel approach for treating neurological diseases. The design of inhibitors, targeting active-inactive conformational transitions of the enzyme, can be aided by understanding the interplay between

Plasmonic Electronic Raman Scattering as Internal Standard for Spatial and Temporal Calibration in Quantitative Surface-enhanced Raman Spectroscopy

October 28, 2020
Author(s)
Wonil Nam, Yuming Zhao, Junyeob Song, Seied Ali Safiabadi Tali, Seju Kang, Wenqi Zhu, Henri Lezec, Amit Agrawal, Peter J. Vikesland, Wei Zhou
Ultrasensitive surface-enhanced Raman spectroscopy (SERS) still faces difficulties in quantitative analysis because of its susceptibility to local optical field variations at plasmonic hotspots in metallo-dielectric nanostructures. Current SERS calibration

Scalable microresonators for room-temperature detection of electron spin resonance from dilute, sub-nanoliter volume solids

October 28, 2020
Author(s)

Nandita S. Abhyankar, Amit K. Agrawal, Pragya R. Shrestha, Russell A. Maier, Robert D. McMichael, Jason P. Campbell, Veronika A. Szalai

Microresonators used for spin detection in volume-limited samples suffer from poor quality factors, which adversely affect sensitivity and ease of coupling to the microwave source. Here we adapt a metamaterial design with toroidal moment to confine

Annual Report on U.S. Manufacturing Industry Statistics: 2020

October 27, 2020
Author(s)
Douglas Thomas
This report provides a statistical review of the U.S. manufacturing industry. There are three aspects of U.S. manufacturing that are considered: (1) how the U.S. industry compares to other countries, (2) the trends in the domestic industry, and (3) the

Correlation of Nano-morphology with Structural and Spectroscopic Studies in Organic Solar Cells

October 27, 2020
Author(s)
Eliot Gann, Christopher McNeill, Wenchao Huang, Dinesh Kabra, Urvashi Bothra, Nakul Jain, Amelia C. Liu
The nano-morphology of bulk heterojunction blends based on poly[[4,8-bis[(2- ethylhexyl)oxy]benzo[1,2-b:4,5- b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]] (PTB7) blended with [6,6]- phenyl-C71-butyric acid methyl

Energy-Based Plasmonicity Index to Characterize Optical Resonances in Nanostructures

October 27, 2020
Author(s)
Marvin M. Muller, Miriam Kosik, Marta Pelc, Garnett Bryant, Andres Ayuela, Carsten Rockstuhl, Karolina Slowik
Resonances sustained by plasmonic nanoparticles provide extreme electric field confinement and enhancement into the deep subwavelength domain for a plethora of applications. Recent progress in nanofabrication made it even possible to tailor the properties

The certification of electrophoretic mobility/zeta potential of silica particles in aqueous solution: ERM-FD305/SRM 1992

October 27, 2020
Author(s)
Y. Ramaye, V. Kestens, J. Charoud-Got, S. Mazoua, G. Auclair, Tae Joon Cho, Blaza Toman, Vincent A. Hackley, T. Linsinger
This report describes the production of ERM-FD305/SRM 1992, silica nanoparticles suspended in a borate buffer, certified for electrophoretic mobility and zeta potential measurements by electrophoretic light scattering (ELS). This material was produced

Media Forensics Challenge Image Provenance Evaluation and State-of-the-Art Analysis on Large-Scale Benchmark Datasets

October 26, 2020
Author(s)
Xiongnan Jin, Yooyoung Lee, Jonathan G. Fiscus, Haiying Guan, Amy Yates, Andrew Delgado, Daniel F. Zhou
With the development of storage, transmission, editing, and sharing tools, digital forgery images are propagating rapidly. The need for image provenance analysis has never been more timely. Typical applications are content tracking, copyright enforcement
Displaying 7301 - 7325 of 73727
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