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Jian Yao, Michael A. Lombardi, Andrew N. Novick, Bijunath Patla, Jeffrey A. Sherman, Victor S. Zhang
Errors in the Coordinated Universal Time (UTC) offset parameters broadcast by Global Positioning System (GPS) satellites caused many thousands of GPS clocks to...
David R. Leibrandt, Samuel M. Brewer, Jwo-Sy Chen, Aaron M. Hankin, David B. Hume, David J. Wineland, Chin-Wen Chou
Frequency and its inverse, time, are the most accurately measured quantities. Historically, improvements in the accuracy of clocks have enabled advances in...
Joshua J. Savory, Liz C. Forero, Kristopher Maurer, Stefania Romisch
The National Institute of Standards and Technology (NIST) timescale produces a real-time realization of UTC(NIST) in the form of a pulse-per-second (PPS) time...
Network Time Protocol (NTP) servers maintained by national timing laboratories are ideally synchronized to a one pulse-per-second (pps) signal from the official...
Marc A. Weiss, Alison Silverstein, Francis Tuffner, Ya-Shian Li-Baboud
Today, the principal way that power system owners and operators use precision timing is for fault recording, protection system operation and in synchrophasor...
The Public Safety Communications Research Program (PSCR) convened over 80 stakeholders at the National Institute of Standards and Technology (NIST) Boulder, CO...
Defense-in-depth is an important security architecture principle that has significant application to industrial control systems (ICS), cloud services...
Vincent Y. Kotsubo, Ray Radebaugh, Sae Woo Nam, Joel N. Ullom, Brandon L. Wilson, Paul Hendershott, Micheal Bonczyski
We are developing a compact, low power, closed cycle cooling system for Superconducting Nanowire Single Photon Detectors. The base temperature of the present...
This paper presents optical measurements of the dynamic strain profiles along the tethers of microelectromechanical resonators and relates them to quality...
Lior Medina, Rivka Gilat, B. Robert Ilic, Slava Krylov
We demonstrate an open-loop self-excitation response in a curved, bistable microelectromechanical beam under a time-independent electrostatic load. The self...
This paper reports on quantification and management of inherent systemic risk/performance tradeoff in the cloud computing model. We view Cloud as a Complex...
Chris Rojahn, Laurie Johnson, Thomas O'Rourke, Veronica Cedillos, Therese P. McAllister
The concept of community resilience is a complex, multi-dimensional problem that relies on social science, engineering, earth sciences, economics, and other...
Raul Uribe, Siamak Sattar, Matthew Speicher, Luis Ibarra
This paper quantifies the impact of using different ground motion selection methods to evaluate the seismic performance of steel special moment frames. Two...
Performance-based standards use plastic rotation as an important measure to determine whether the response meets the acceptance criteria for moment-resisting...
Structural engineers in the United States have turned to performance-based design methodologies for design of new buildings in order to find improved design...
Samantha Gamboa Quintiliani, Fernando Cintron, David W. Griffith, Richard A. Rouil
Long Term Evolution Advanced (LTE-A) introduces a new feature called Proximity Services (ProSe), which enables device-to-device (D2D) communication between User...
An analytical method is developed to investigate the potential energy of fully nonlinear framed structures and other energy characteristics due to earthquake...
With the congestion and scarcity of available spectrum resources, spectrum sharing between long-term evolution (LTE) and the IEEE 802.11 (aka. WLAN) systems is...
Azza Ben Mosbah, Timothy Hall, Michael R. Souryal, Hossam Afifi
Sharing between commercial and Federal incumbent users, such as in the 3.5 GHz band, is expected to increase the availability of spectrum for wireless broadband...
We investigate the role of the electric field and its normal derivative in three-dimensional electromagnetic scattering theory. In particular, we present an...
Supply chain management is critically dependent on trusted email with authentication systems that work on a global scale. Solutions to date have not adequately...
The ferromagnetic Ising model with zero applied field reduces to sampling even subgraphs X of a graph G with probability proportional to $\lambda^|E(X)|}$, for...
Cloud computing has undergone rapid expansion throughout the last decade. Many companies and organizations have made the transition from traditional data...
IEEE 802.15.6 is a radio interface standard for a wireless connectivity of wearable and implantable sensors and actuators located inside or in close proximity...
Wesley N. Griffin, William L. George, Terence J. Griffin, John G. Hagedorn, Thomas M. Olano, Steven G. Satterfield, James S. Sims, Judith E. Terrill
Content creation for realtime interactive systems is a difficult problem. In game development, content creation pipelines are a major portion of the code base...
Access control systems are among the most critical of computer security components. Faulty policies, misconfigurations, or flaws in software implementations can...
Passwords are tightly interwoven with the digital fabric of our current society. Unfortunately, passwords that provide better security generally tend to be more...
IEEE 802.15.6 is a radio interface standard for wireless connectivity of wearable and implantable sensors located inside or in close proximity to the human body...
Magnus G. Find, Alexander Golovnev, Edward Hirsch, Alexander Kulikov
We consider Boolean circuits over the full binary basis. We prove a $(3+\frac{1}{86})n-o(n)$ lower bound on the size of such a circuit for an explicitly defined...