For many industrial and scientific laser applications, such as materials processing, fiber coupling, beam collimation, and beam focusing, it is necessary to have a good laser beam quality. In general, propagating laser beams deviate from an ideal Gaussian intensity distribution. The degree of deviation can be conveniently quantified by a quality factor M (called the “M-squared” factor or the “t...

evaluation of communication abilities in the elderly is crucial for activities which will be performed to improve their quality of life. a valid and reliable questionnaire is needed for assessing communication abilities. we aimed to translate and validate the speech, spatial, and qualities of hearing scale (ssq) in iran. the forward-backward procedure was applied to translate the questionnaire ...

We have measured the mechanical dissipation in a sample of fused silica drawn into a rod. The sample was hung from a multiple-bob suspension, which isolated it from rubbing against its support, from recoil in the support structure, and from seismic noise. The quality factor, Q, was measured for several modes with a high value of 57 million found for mode number 2 at 726 Hz. This result is about...

In recent years, several Total Quality Management (TQM) techniques have been introduced for better Software Quality Management. One of these techniques is Quality Function Deployment (QFD). This papers shows how QFD has been applied to an existing software quality assessment technique, the Quality Factor technique (QF). This improved technique, QFD, uses ISO/IEC 9126:2000 standards in its imple...