The Narrow Field Infrared Adaptive Optics System (NFIRAOS) is the first light Adaptive Optics (AO) system for the Thirty Meter Telescope (TMT). A critical component of NFIRAOS is the Real-Time Controller (RTC) subsystem which provides real-time wavefront correction by processing wavefront information to compute Deformable Mirror (DM) and Tip/Tilt Stage (TTS) commands. The National Research Coun...

BACKGROUND Acute psychosocial stress provokes increases in circulating endothelin-1 (ET-1) levels in humans and animal models. However, key questions about the physiological function and cellular source of stress-induced ET-1 remain unanswered. We hypothesized that endothelium-derived ET-1 contributes to the acute pressor response to stress via activation of the endothelin A receptor. METHODS...

Large circuits of neurons are employed by the brain to encode and process information. How this encoding and processing is done is one of the central questions in neuroscience. Since individual neurons communicate with each other through electrical signals (action potentials), the recording of neural activity with arrays of extracellular electrodes is uniquely suited for the investigation of th...

Satellite telemetry devices collect valuable information concerning the sites visited by animals, including the location of central places like dens, nests, rookeries, or haul-outs. Existing methods for estimating the location of central places from telemetry data require user-specified thresholds and ignore common nuances like measurement error. We present a fully model-based approach for loca...

BACKGROUND Contemporary implantable heart rhythm devices communicate multiple complex data simultaneously using radiofrequency telemetry. Interference in communication can expose them to the risk of potential corruption, leading to adverse clinical consequences. METHODS & RESULTS We studied the characteristics of interference with uplink (real time intracardiac electrograms, marker channel, a...

In most of the initial applications of digital TV telemetry the video source signal is monochrome (typically RS-170 standard). However color TV is now employed extensively in many of the government test ranges, and it is likely that it will be required to digitally transmit the NTSC color TV signal for security and other reasons. It is also likely that the bit rates which will be employed for t...

The 12 June Reviews by R. Kays et al. (“Terrestrial animal tracking as an eye on life and planet,” p. 1222) and N. E. Hussey et al. (“Aquatic animal telemetry: A panoramic window into the underwater world,” p. 1221) highlight some challenges to the future of terrestrial and aquatic telemetry studies, respectively, focusing on issues related to global collaboration and data sharing. Kays et al. ...

Development of an FHSS-based wireless telemetry system is a complicated process that involves evaluation of many trade-offs. This article delivers considerations on this process, describes criteria of efficient design, and analyzes existing solutions. The complex of techniques are suggested which allow improving characteristics of the FHSS-based wireless telemetry system compared to analogues.