background: chronic heart failure (chf) can have negative effects on the quality of life (qol). self-management education is one of the approaches that can be adopted to increase the qol of these patients. this study aimed to determine the effect of self-management training using compact disc (cd) on the qol in patients with chf. methods: this study was a non-randomized controlled clinical tria...

We investigate compact composition operators on ceratin Lipschitzspaces of analytic functions on the closed unit disc of the plane.Our approach also leads to some results about compositionoperators on Zygmund type spaces.

we investigate compact composition operators on ceratin lipschitzspaces of analytic functions on the closed unit disc of the plane.our approach also leads to some results about compositionoperators on zygmund type spaces.

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In this paper we examine the dynamic resolution of technological adoption in \hardware/software" systems. We are interested in determining to what extent software availability a®ects hardware sales and/or vice-versa. We ̄st develop a dynamic model for estimating demand when costs (and hence prices) are declining over time. We then estimate it empirically for the case of compact disc players. We...

The cross-couplings between focus and radial tracking servos in compact disc players are important, but the optical cross couplings are not well described in the literature. In this paper an optical model of a compact disc player based on the three beam single foucault detector principle is found. The general principle of the three beam focus and radial detector system is first described, follo...