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PubMed1978

Priorities for a national health policy: cost control and disease prevention.

Despite some progress on the national health care scene, the cost spiral looms as the major problem to be tacked now, forcing moves toward a revamped national health plan into the wings. Health care organizations with access to the administration, however, should design detailed disease prevention plans--which will not require immediate huge expenditures--and should develop the date to show their cost effectiveness.

Cost-Benefit Analysis↗
PubMed2004

Guaranteed cost controller design for discrete-time switching fuzzy systems.

With two level weighting functions, namely, crisp switching-region weighting functions and local fuzzy weighting functions, this paper introduces a discrete-time switching fuzzy system, which inherently contains the features of switched hybrid systems and Takagi-Sugeno (TS) fuzzy systems, and then, for this discrete-time switching fuzzy system, this paper proposes two new guaranteed cost state-feedback controllers minimizing an upper bound of state and input energy called LQ performance under all admissible grades of time-varying fuzzy weighting functions. The first one, associated with a piecewise quadratic Lyapunov function (PQLF), uses time-varying information on the switching-region weighting functions. The second one, associated with a new piece-wise fuzzy weighting-dependent Lyapunov function (PFWLF), uses time-varying information on the local fuzzy weighting functions as well as on the switching-region functions. Especially with a new special structure of the candidate of PFWLF, the PFWLF-based controller employs not only the current-time but also the one-step-past information on the time-varying local fuzzy weighting functions.

Journal Article↗