Magnetic disk

Magnetic disk recording was invented in 1953 and has undergone intensive development ever since. As a result of this 38 years of development, the cost per byte and the areal density have halved and doubled respectively every 2-2 1/2 years. Today, the cost per byte is lower than 10(exp -6) dollars per byte and area densities exceed 100 10(exp 6) bits per square inch. In this talk, the recent achievements in magnetic disk recording are first surveyed briefly. Then, the principal areas of current technical development are outlined. Finally, some comments are made about the future of magnetic disk recording

Microprocessor-controlled inverter-fed synchronous motor

Imperial Users onl

A computer simulation of digital recording Final development progress report, 29 Dec. 1966 - 29 Dec. 1967

Fourier series digital computer simulation of tape recording process - signal detection in prescence of white Gaussian nois

Addendum no. 1 to final development report

Pseudo-linearity concept impact on linear filters designed to ease pulse crowding effects at high bit densitie

States with larger populations of vulnerable groups and with more financial resources are more likely to adopt more comprehensive anti-bullying laws.

In order to tackle bullying 49 US states have put into place state-level anti-bullying policies. But what determines how comprehensive these anti-bullying laws are? In a close analysis of state anti-bullying laws, Dan Mallinson finds that states with larger populations of groups which are more vulnerable to bullying, such as LGBTQ, disabled, and minority students, as well as those with greater potential financial resources, were more likely to have more comprehensive anti-bullying legislation

Constantine

This is a review of Constantine (2005)