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김삼수,홍재근,김수중,Kim, Sam-Soo,Hong, Jae-Keun,Kim, Soo-Joong The Institute of Electronics and Information Engin 1987 전자공학회논문지 Vol.24 No.1
The hierarchical approach method is proposed to sperate each different time scale sub-systems from linear time invariant multi-parameter singular perturbation systems. By means of this proposal, the original multi-parameter singular perturbation systems is completely separated into independent subsystems with each different time scale. It is also investigated that the controllability of the system is invariant. And this paper applies singular perturbation methods to the minimum control effort problem for linear time invariant systems with constrained controls. Also near-optimum control theory, which is based on dividing the total time interval with the time scales respectively, is proposed. As a result, the time scale separation method is show to be particularly useful in a near optimum design which can be otained through a decentralized control structure.
김삼수 ( Sam Soo Kim ) 한국EU학회 2013 EU학연구 Vol.18 No.1
Minimum wage in UK which had been applied to the low wage industries until it was abolished in 1993, was reintroduced as a single-rate national minimum wage applicable to all industries by National Minimum Wage Act 1998 under the Blair Labour government. Newly reintroduced minimum wage system was systematically organised and has been appraised as a successful achievement. This study investigates the main features and characteristics of the enforcement regime of the current national minimum wage system focusing on compliance securing policy. As a result of analysis, it is shown that the enforcement measures at most had remained at the ``enforcement notice`` level when the cases of underpayment were identified through the National Minimum Wage Compliance Officers`` investigations under the old enforcement regime before the revision of minimum wage system in 2009. Legal enactment of Employment Act 2008 was carried out in order to deal with the problems mainly inherent to the old enforcement regime of National minimum wage; the unfair calculation method of arrears of underpayment, incomplete legal sanctions(civil and criminal), and inadequate security of complainants`` anonymity.