A Phenomenological Study of the Lived Experiences of Tagumpay National High School Teachers Involved in Online Learning Action Cell Session

A qualitative phenomenological approach was used in this study to describe the lived experiences of Tagumpay National High School (TNHS) teachers on Online Learning Action Cell (LAC) session. LAC is a school-based professional development for teachers implemented by the Philippine Department of Education (DepEd). Due to teacher’s lack of participation on classroom LAC, a fully-online mode option is explored by offering TNHS teachers Online LAC session using Facebook as a Learning Management System (LMS). To capture the lived experience of teachers, an in-depth interview with a purposive sample of one TNHS teacher is done in the process. The data gathered went through “Hycner’s Explicitation Process” (1999, in Groenewald, 2004) which includes bracketing, delineating, clustering, summarizing and extracting unique themes. Validity and Credibility were accomplished through an intercoder agreement between researchers, Facebook chat records, bracketing, and member checking. Results identified three themes in relation to teacher’s experience of Online LAC session including usefulness, barriers, and preference. Findings revealed the major role of TNHS teacher’s context on how Online LAC is utilized. Recommendations include administrator and expert teacher working with classroom teachers and the inclusion of teachers’ voices as input in the program design, implementation and evaluation stages of Online LAC to better address curriculum needs and facilitate the delivery of high-quality professional development for teachers’ professional growth.

Numerical Study of Some Mhd Flow Problems of Micropolar Fluids

This thesis aims at presenting the numerical study of some flow problems related to the micropolar fluids in various geometries including the channel with stretching/shrinking walls, stretching cylinder, and the vertical square duct. The problems may be categorized as the self-similar flows and the ones for which similarity solutions are not existent. For the self-problems, the powerful tool of similarity transformation is an obvious choice which converts the governing partial differential equations into a set of nonlinear ordinary differential equations which are either of third or fourth order. For the third order ODEs, order-reduction technique has been an excellent choice, whereas the ones of the fourth order are solved by employing the Differential Transform Method (DTM) and the Quasi-linearization approach. For the non self-similar problems, three step explicit Runge-Kutta method has been employed for the numerical investigation of the unsteady pulsatile flow in a horizontal channel, whereas a compact finite difference scheme is developed to study the hydro-dynamically as well as thermally developed flow in a vertical duct. The micropolar fluid model proposed by Eringen has been employed in all the investigations. Through tables and figures, effects of the governing parameters on the flow, microrotation and thermal aspects of the problems are discussed.