Background and purpose: With rapid global development happening in the world today, the field of education has been awash with various change forces. In an effort to ensure its system is globally competitive, Malaysia has taken a step to align its English language education system to the Common European Framework of Reference (CEFR). However, any change in policy is not without problems and challenges as studies have shown that challenges were inevitable and stakeholders’ buy-in on the new change is necessary. Hence, this study was undertaken to investigate the challenges faced by teachers in implementing the CEFR in Malaysian ESL classrooms, their belief on this new reform and their readiness to implement the CEFR. Methodology: A mixed-method design was utilized with the use of questionnaire and semi structured interview as means for data collection. 365 English language teachers responded to the questionnaire while 15 English language teachers participated in interview sessions. Findings: The data revealed five challenges namely teachers’ motivation, materials, time, students’ proficiency level and facilities. Despite facing multiple challenges, all teachers exhibited positive belief towards the adoption of the CEFR. The study also showed that although teachers were emotionally ready to accept the change, their cognitive readiness for change however is dependent upon three important facets namely time, collective effort and adequate materials. Contributions: The study provides insights into the change in policy involving the CEFR implementation in the Malaysian English language education system which contributes to the scarce literature on the implementation of CEFR. Keywords: Policy implementation, challenges in policy change, teachers’ belief, Common European Framework of Reference (CEFR), readiness for change. Cite as: C. Alih, N. A., Abdul Raof, A. H., & Md. Yusof, M. A. (2021). Policy change implementation: The case of the CEFR in Malaysian ESL classrooms. Journal of Nusantara Studies, 6(2), 296-317. http://dx.doi.org/10.24200/jonus.vol6iss2pp296-317
This paper presents a new approach of optimization technique in the controller parameter tuning for waste-water treatment process (WWTP) application. In the case study of WWTP, PID controller is used to control substrate (S) and dissolved oxygen (DO) concentration level. Too many parameters that need to be controlled make the system becomes complicated. Gravitational Search Algorithm (GSA) is used as the main method for PID controller tuning process. GSA is based on Newton's Law of Gravity and mass interaction. In this algorithm, the searcher agents survey the masses that interact with each other using law of gravity and law of motion. For WWTP system, the activated sludge reactor is used and this system is multi-input multi-output (MIMO) process. MATLAB is used as the platform to perform the simulation, where this optimization is compared to other established optimization method such as the Particle Swarm Optimization (PSO) to determine whether GSA has better features compared to PSO or vice-versa. Based on this case-study, the results show that transient response of GSA-PID was 20%-30% better compared to transient response of the PSO-PID controller.
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