A Comprehensive Review and Matrix of 14 Usability Testing Tools In 2009 I wrote a popular article on 24 usability testing tools. Since that time, there has been tremendous growth in the quantity and ...

A switch-matrix board that routes any of eight programmable voltage signals to any of 96 output pins. The board generates digital patterns up to 20 MHz and 30 kV and has 36 Mbytes of memory. Four ...

This product how-to article shows how a Quintech RF matrix switching system can be used instead of traditional patch panel, splitters, and combiners to automate test beds for wireless testing. A test ...

The Frequency (or Selective) Testing Module for the Matrix Gemini LIMS (Laboratory Information Management System) further enhances the versatility of the LIMS. It allows the definition of flexible ...

The information matrix can equivalently be determined via the expectation of the Hessian matrix or the expectation of the outer product of the score vector. The identity of these two matrices, however ...

We apply the White information matrix (IM) test to the linear regression model with autocorrelated errors. A special case of one component of the test is found to be identical to the Engle Lagrange ...