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A Mathematical Theory of Communication

The recent development of various methods of modulation such as PCM and PPM which exchange bandwidth for signal-to-noise ratio has intensified the interest in a general theory o...

1948 Bell System Technical Journal 77125 citations

The CES-D Scale

The CES-D scale is a short self-report scale designed to measure depressive symptomatology in the general population. The items of the scale are symptoms associated with depress...

1977 Applied Psychological Measurement 52180 citations