Emotion is well-recognized as a distinguished symbol of human beings. Psychologists believe that it plays a crucial role in delivering implicit messages in our daily communication. However, existin
Humans and their activities have long been labeled as obstacles and disturbances for wireless ambient signals. However, only till recently people realize that the signal fluctuation caused by human
Indoor localization of smart hand-held devices is essential for location based services of pervasive applications. Previous research mainly focuses on exploring wireless signal fingerprints for th
Sleep is a major event of our daily lives. Its quality constitutes a critical indicator of people’s health conditions, both mentally and physically. Existing sleep monitoring systems either are ob
Humans and their activities have long been labeled as obstacles and disturbances for wireless ambient signals. However, only till recently people realize that the signal fluctuation caused by human b