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Given a hierarchical architecture of process control hybrid system, this paper describes a method for constructing a Petri net hybrid controller in its process layer. The process hybrid controller uses PID algorithm for steady state regulation and hybrid switching strategy for large changes. Based on Petri net place invariants the hybrid switching(More)
Scaling the number of cores on processor chips has become the trend for current semiconduction industry (i.e. Intel/AMD many-core CPU, Nvida GPU etc). Current software development should take advantage of those multi-core platforms to achieve high performance. But it is a challenging task to develop parallel software on multiple processor because of the(More)
To develop a minipig model of type 2 diabetes that simulates the common manifestations of the metabolic abnormalities and resembles the kidney pathology of type 2 diabetes in the human population, male Chinese Bama minipigs were divided into 2 groups (5 in each) and fed with a control diet (CD) or high-fat/ high-sucrose/ high-cholesterol diet (HFSCD) for 5(More)
An improved real-time evolution (RTE) strategy is proposed in an effort to apply RTE more accurately in optimization. The improved RTE tries to consider parameter update and employs a new algorithm as a substitution of the direct search. Algorithm performance comparisons are made among direct search, particle swarm optimization (PSO) and genetic algorithm(More)
Keywords: Preventive maintenance policy Imperfect preventive maintenance Extended proportional hazards model Variable operational conditions a b s t r a c t This paper develops two component-level control-limit preventive maintenance (PM) policies for systems subject to the joint effect of partial recovery PM acts (imperfect PM acts) and variable(More)
Research and development in microelectromechanical systems (MEMS) have made remarkable progress since the advent of the first electrostatic micromotor in 1987. Considerable efforts have been directed to the investigation of the failure mechanisms and reliability of electrostatic micromotors. This paper provides a brief overview of failure modes and(More)
Traditional interactive evolutionary computing approaches are usually susceptible to limited searching ability and human’s strong subjectivity. In response, by extending a traditional Belief-Desire-Intention (BDI) structure, a kind of affective learning agent which can perform affective computing and learning activities in human-computer interaction(More)
Water-soluble, β-cyclodextrin conjugated superparamagnetic nanoparticles have been constructed. These particles showed selective binding to cholesterol crystals, which opens the door for the detection of cholesterol crystal-related diseases such as atherosclerosis by magnetic resonance imaging (MRI).