Authors:
R. Sree Parimala
Pages: 1 - 5 Abstract: This paper is concerned with the study of bulk service M/M(a,b)/(2,1) queueing system of two heterogeneous servers with different service rates. In this model it is assumed that the arrival pattern is Poisson style with parameter λ and the service times are assumed to be mutually independent and exponentially distributed with parameters μ1and μ2 for the fast and slow servers respectively. The arrivals are served in batches according to FCFS discipline. In this model, the fast server (server 1) is always retained in the system and a delayed and single vacation policy for slow server (server 2)is discussed. The steady state solutions and the system characteristics are derived and analyzed for this model. The analytical results are numerically exemplified for different values of the parameters and levels also. PubDate: 2020-05-06 DOI: 10.12691/jmsa-8-1-1 Issue No:Vol. 8, No. 1 (2020)

Authors:
Geraldine P. Quillo; Janneth Q. Rondina Pages: 6 - 9 Abstract: Teachers are forefront of students’ educational experiences that provide students guidance and technical skills they need to become productive. In the advent of technology, teachers must have to deliver classroom instruction incorporating the use of technology available in their community to help students learn. This study examined the technology used by teachers and their perceptions on the effectiveness of using them in the classroom. Questionnaire were developed and administered to eighteen (18) grade 10 mathematics teachers of the Department of Education specifically in the municipality of Lebak and Kalamansig of Sultan Kudarat. The researchers used a modified questionnaire and the collected data was analyzed using frequency, percentage and the mean. Based on the findings, most mathematics teachers are not knowledgeable on technological know-hows but have a positive perception towards technology integration in their mathematics classroom. The results also indicate that teachers strongly agree that technology integration is the important tool in enhancing teaching and learning process. Most teachers in this study strongly agreed that their students learn more effectively with the use of technology as lessons designed more engaging and interesting. It is also found that teachers have a positive perception towards the effectiveness of technology integration in a mathematics classroom. Further researches may focus on actual use of technology in classroom, the factors hindering teachers from incorporating technology in instructions, as well as the support given by the government and other stakeholders to teachers in trying to integrate technology in the teaching and learning process. PubDate: 2020-07-10 DOI: 10.12691/jmsa-8-1-2 Issue No:Vol. 8, No. 1 (2020)