This article presents a novel optimal constraint-following controller for uncertain mechanical systems (MSs). The MS's uncertainty is unknown (possibly time-varying) and bounded, but the bound unspecified. Employing frame of Udwadia–Kalaba theory, we design robust with two tunable control gains MSs, which guarantees some deterministic performances. Assuming constraints to be holonomic periodic,...

Survival signature technology has recently attracted increasing attention for its merits on quantifying reliability of systems with multiple types components. In order to implement evaluation multi-state system (MSS), computing methods survival are studied analysis several different in this paper. For an MSS consisting components, can be developed based the state definition system. binary-state...

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Effective disaster recovery planning, execution, and testing are essential to manage the risk of business interruption that arises from a myriad of sources such as fire, natural or manmade disasters, sabotage, or technical or human operational failures. The Municipal Software Services, Inc (MSS) case describes a company that was faced with a catastrophic fire. The MSS case provides a realistic ...

a bstract background: some health problems are more prevalent in shift workers than day workers. musculoskeletal disorders are considered as one of the most common health-related problems that can cause disability among health care workers. the aim of this study was to assess the associations between shift working and the prevalence of musculoskeletal symptoms (mss) among nursing personnel. mat...