Archaeologists exploring a cave system near the center of the Maya city of Chichen Itza unexpectedly came upon several chambers filled with ritual objects. This discovery supports the theory that when ...

Evidence of the handiwork of early Maya beekeepers has been unearthed at the ancient city of Nakum in northeastern Guatemala. Beneath a vast ritual platform dating from around 100 B.C. to A.D. 300, a ...

Abstract: Indoor localization has attracted more and more attention because of its importance in many applications. One of the most popular techniques for indoor localization is the received signal ...

Shareholders are getting serious about sustainability. by Robert G. Eccles and Svetlana Klimenko Most corporate leaders understand that businesses have a key role to play in tackling urgent challenges ...

Abstract: During the last decade, the exponential growth of mobile devices and wireless services created a huge demand for radio frequency-based technologies. Meanwhile, the lighting industry has been ...