In 1938, the British psychologist John C. Raven (1902-1970) published this set of drawings “for measuring intelligence in subjects of all mental ages above 3 years.” The test consists of sixty pages ...

In my previous column (see “Editor's Picks,” at right), I discussed transverse flexural testing of a unidirectional composite as one method of evaluating the strength of the fiber/matrix interfacial ...

Using switch matrices in complex test and verification installations Introduction A programmable switch matrix is designed to bring automation to an electronic test process by providing an extremely ...

A switching matrix used in a test system connects a signal on a particular column to an instrument on a certain row. Typically, there are more signals than instruments, so several voltage measurements ...

The Siqveland matrix is by far the most popular in general dental practice in Scotland. Most dental practitioners do not remove and change the matrix band between patients, relying on routine ...