This SpringerBrief examines the use of cheap commercial passive RFID tags to achieve accurate device-free object-tracking. It presents a sensitive detector, named Twins, which uses a pair of adjacent passive tags to detect uncooperative targets (such as intruders). Twins leverages a newly observed phenomenon called critical state that is caused by interference among passive tags. The author expands on the previous object tracking methods, which are mostly device-based, and reveals a new in...

This celebration of Chinese Science Fiction — thirteen stories, all translated for the first time into English — represents a unique exploration of the nation’s speculative fiction from the late 20th century onwards, curated and translated by critically acclaimed writer and essayist Xueting Christine Ni.From the renowned Jiang Bo’s ‘Starship: Library' to Regina Kanyu Wang’s ‘The Tide of Moon City', and Anna Wu’s ‘Meisje met de Parel', this is a collection for all f...

Inequality in health reflects the deeper social and economic structures shaping everyday life.This edited volume investigates the complex and uneven landscape of health disparities in contemporary Korean society, demonstrating how rapid economic and social transformations have produced unequal health outcomes across diverse populations. The collection highlights how factors such as employment conditions, social capital, and access to healthcare contribute to differe...

Was the period of the three states of Song, Liao and Jin the second Three-Kingdom Period in China?How did they get along with one another?What was the end result of their constant wars against one another?What could have been?What if?The three major powers in East Asia in modern times are China, Japan, and Korea.There is a great danger of another traumatic Three Kingdoms conflict developing if these countries do not manage their relations wit...