Inversion of the photoplethysmographic (PPG) signal is a rarely reported case.This signal anomaly can have implications for PPG-based cardiovascular assessments.The conditions for PPG signal inversion in the vicinity of the dorsalis pedis (DPA) artery of the foot were investigated.Wireless multi-wavelength PPG sensing with skin-probe contact pressu
Insular organisms typically evolve in closed, isolated systems; thus, changes caused by introduced species can drastically affect their ecology.Isle Royale National Park (Michigan, USA) is a remote island in Lake Superior adjustment slide that, until relatively recently, was void of earthworms.Its two native natricine snakes are known to feed on ea
In recent years, the navigation of mobile robots has been of great interest.One of the important challenges in the navigation of mobile robots is the obstacle avoidance problem so that the robots do not collide with each other and obstacles, during their movement.Hence, for good navigation, a reliable obstacle avoidance methodology is needed.On the
Exposure to low ambient temperature imposes great challenge to human health.Epidemiological evidence has noted significantly elevated emergency admission and mortality rate in cold climate in many regions, in particular, adverse events in cardiovascular system.Cold stress is becoming one of the important risk factors for cardiovascular death.Throug