(Rest-Activity Rhythms/Intradaily Variability) Skin/Retinoids (Retinoic Acid Receptor) Engineering/Signal processing (Robust Adaptive Rayforming) Medical data (MIMIC-IV)
These terms appear together in studies investigating human circadian rhythms.
is the dominant receptor (87%) in human epidermis. It explains how retinoids (like retinol) work in the skin, which is crucial for dermatology research.
If you can tell me a bit more about the context (e.g., medical, engineering, or a file you found), I can provide more details.
One search result mentions that in the MIMIC-IV database (a large critical care database), a parameter identified as RAR was used to predict one-year mortality with a Hazard Ratio (HR) of 1.29.
A research paper, "Outage Constrained Robust Transmit Optimization," mentions a R obust A daptive R ayforming (RAR) method designed to handle uncertainty in channel state information (CSI).
Studies show higher fragmentation (higher IV) during winter for some, while others might experience earlier evening settling. This is often measured using actigraphy data (wearable devices) to understand sleep quality. Retinoic Acid Receptor- ) in Skin: This study discusses how RAR-
Measures how fragmented a person's activity is (e.g., frequent naps or waking up at night).