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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 883 records · Page 49
All sourcesNASA NTRSDOE OSTI
DOE OSTI2016

Programmable electroacoustic filter apparatus and method for its manufacture

An acoustically coupled frequency selective radio frequency (RF) device is provided. The device includes a piezoelectric substrate overlain by a plurality of electrodes. The device further includes a pair of RF input terminals at least one of which is electrically connected to at least one of the electrodes, and a pair of output RF terminals, at least one of which is electrically connected to at least one other of the electrodes. At least one of the electrodes is electromechanically reconfigurable between a state in which it is closer to a face of the piezoelectric substrate and at least one state in which it is farther from the face of the piezoelectric substrate.

47 OTHER INSTRUMENTATION↗
DOE OSTI2013

Lessons Learned in Over a Decade of Technical Support for U.S. Nuclear Cyber Security Programmes

Pacific Northwest National Laboratory’s (PNNL) nuclear cyber security team has been providing technical support to the U.S. Nuclear Regulatory Commission (NRC) since 2002. This team has provided cyber security technical experties in conducting cyber security inspections, developing of regulatory rules and guidance, reviewing facility cyber security plans, developing inspection guidance, and developing and teaching NRC inspectors how to conduct cyber security assessments. The extensive experience the PNNL team has gathered has allowed them to compile a lenghty list of recommendations on how to improve cyber security programs and conduct assessments. A selected set of recommendations are presented, including the need to: integrate an array of defenisve strategies into a facility’s cyber security program, coordinate physical and cyber security activities, train phycial security forces to resist a cyber-enabled physical attack, improve estimates of the consequences of a cyber attack, properly resource cyber security assessments, appropropriately account for insider threats, routinely monitor security devices for potential attacks, supplement compliance-based requirements with risk-based decision making, and introduce the concept of resilience into cyber security programs.

Glantz, Clifford S.↗
DOE OSTI2017

Digitization of Analog Signals using a Field Programmable Gate Array (FPGA)

The idea of this research is consolidating the electrical components used for capturing data in the Mu2e Tracker. Ideally, an FPGA will serve as the Time-Division Converters (TDC) and Analog-to-Digital Converters (ADC). The TDC is already being carried out by the FPGA, but we are still using off the shelf ADCs. This poster proposes using Low Voltage Differential Signaling as the basis for analog-to-digital conversion using and FPGA.

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗