• Age replacement models: A summary with new perspectives and methods 

      Zhao, Xufeng; Al-Khalifa, Khalifa N.; Hamouda, AbdelMagid; Nakagawab, Toshio ( Elsevier Ltd , 2017 , Article Review)
      Age replacement models are fundamental to maintenance theory. This paper summarizes our new perspectives and hods in age replacement models: First, we optimize the expected cost rate for a required availability level and ...
    • What is Middle Maintenance Policy? 

      Zhao, Xufeng; Al?Khalifa, Khalifa N.; Hamouda, Abdel Magid; Nakagawa, Toshio ( John Wiley and Sons Ltd , 2016 , Article)
      The main purpose of this paper is to propose several new maintenance policies that can be performed at suitable middle times for trivariate preventive maintenance scenarios. Firstly, characteristics and limitations for the ...