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Articles by R. Razali
Total Records ( 2 ) for R. Razali
  R. Razali , A.N. Abd Alla , M.A. Choudhury and P.K. Shadhu Khan
  Researchers as well as the industries have great interest in energy efficient operation of Induction Motor Drives (IMD). This can be achieved if the IMD is operated at its maximum efficiency under different loading conditions. In this study, the on-line voltage/current V/I control scheme to operate IMD at its maximum efficiency is introduced. The steady-state per phase equivalent circuit of induction motor is used to derive the V/I reference expressions. The control method requires supplied current, voltage, frequency and motor constants to achieve the maximum efficiency operating region. The V/I algorithm is realized through a control software and single-chip 3-phase AC motor controller, MC3PHAC supervised by Personal Computer (PC). Experimental result shows that V/I ratio under different loading conditions met the targeted value by changing the modulation index. The proposed method is suitable to low horsepower HVAC motors where oversize and/or have a wide load variation.
  Wan Maseri , Amran Rasli , A.N. Abdalla and R. Razali
  Construction consulting companies are among the critical players in ensuring the success of construction projects. This study has attempted to address the issues of Knowledge Management (KM) and IT infrastructure contribution to Project Performance (PP) in construction consulting industry. The link between knowledge management, IT infrastructure and project performance was conceptualized in a way that KM, IT infrastructure contribute to PP. Then, a factor analysis, impact ratio, correlation as well as multiple regressions were used to model the relationship between KM, IT infrastructure and PP. The analytical result shows positive relationship between knowledge management, information technology infrastructure and project performance, through the analysis of regression function, i.e. PP for construction consulting company can be predicted from the implementation of KM and IT Infrastructure. The proposed method provides best model for construction industry to implement effective KM initiatives and information technology infrastructure, to support project performance.
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