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3 record(s) found

What do the L2 generalizability studies tell us?1

Abstract

This research synthesis examines the relative magnitudes of the variance components found in 44 generalizability (G) theory studies in L2 testing. I begin by explaining what G theory is and how it works. In the process, I explain the diffrences between relative and absolute decisions, between crossed and nested facets, and between random and fixed facets, as well as what variance components (VCs) are and how VCs are calculated. Next, I provide an overview of G-theory studies in L2 testing and discuss the purposes of this research synthesis. In the methods section, I describe the materials used in this research synthesis in terms of the samples of students, the tests, and the G-study designs used. I also present the analyses in terms of how the data were compiled and analyzed. The results are sorted and displayed to reveal patterns in the relative contributions to test variance of various individual facets as well as interactions between and among facets for different types of tests. I .....

Article Published 2011 132 hits Available

Chemical constituents of Malaysian Aquilaria crassna Pierre (gaharu)

Norzafneza Mohd Arriffin

Abstract

Studies of Aquilaria crassna Pierre from the leaves and barks had been divided into four parts; phytochemical screening, essential oils, chemical constituents and antimicrobial activities. Samples were extracted using three solvents; hexane, dichloromethane and methanol. All six extracts; three leaves and three barks had underwent phytochemical screening to detect the presence of secondary metabolites. Fresh samples of leaves and barks went through hydrodistillation process using Dean Stark apparatus to obtain essential oil. Isolation of chemical compounds had been done using several chromatography techniques such as column chromatography (CC), preparative thin layer chromatography (PTLC) and monitoring with thin layer chromatography (TLC). Totally, seven pure compounds successively isolated. Four pure compounds isolated from leaves; 5-hydroxy- 7,4• -dime.....

Thesis Published 2012 454 hits Available

An evaluation of a university Bilingual Education Program using the Context, Input, Process and Product (CIPP) model in Yogyakarta Indonesia

Raudhatul Haura

Abstract

The aim of the research is to ascertain the effectiveness of the Bilingual Education Program using the Context, Input, Process, and Product (CIPP) Model. The objectives are to evaluate the Bilingual Education Program using the Context, Input, Process, and Product (CIPP) Model, identify the strengths and weaknesses of the program and suggest ways to improve it. The Bilingual Education Program was implemented in an International Class at the Faculty of Economics and Business. The qualitative research approach was employed. The purposive sampling techniques were utilised involving the Dean of the Faculty of Economics and Business, two lecturers who were involved in teaching in the International Class, five students in the International Class, and alumni members. Data obtained from the classroom observation, semi-structured interviews, and document analysis were analysed using thematic analysis. The findings showed that in real practice, lecturers could successfully run the Bilingual Learn.....

Thesis Published 2024 961 hits Available

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