A ventricular shunt systems and methods of preventing hydrocephalus are described herein. A login request including an account owner’s correct username and password as well as additional login information is received from a user. The variable airfoil wing is a simple concept which divides an aircraft wing into a forward segment and a rearward segment. The prototype is reconstructed using circular rotation values by producing a set of circular rotation values associated with the prototype, generating a set of bandpass waveforms associated with the phase parameters of the reference prototype in multiple frequency bands, and modifying the set of bandpass waveforms based upon the circular rotation values. When the sheet passes through the conveying path outlet, the cam rotates and comes into contact with the sheet to move the sheet to the tray.