أرسل هذا في رسالة قصيرة: Professions, organizations, and institutions: Tenure systems in Colleges and Universities

 ______     _____     ______   __   __   __   _   
|      \\  |  ___||  /_   _//  \ \\/ // | || | || 
|  --  //  | ||__      | ||     \ ` //  | '--' || 
|  --  \\  | ||__     _| ||      | ||   | .--. || 
|______//  |_____||  /__//       |_||   |_|| |_|| 
`------`   `-----`   `--`        `-`'   `-`  `-`