Electronic mail, or email, is a method for com-municating using the internet which inexpensive, effective, and fast. Spam type of email where unwanted messages, usually commercial are distributed in large quantities by spammer. The objective such behavior to harm users; these messages need be detected prevented from being sent users first place. In order filter emails, developers have used mach...

Student engagement in a learning environment is directly related to students’ perception and involvement of the educational activities class, along with their physical mental health. This paper presents an extensive survey various automatic detection approaches algorithms based on computer vision, physiological neurological signals analysis-based methods. The vision-based techniques depend trai...