Technology-based interventions for children with reading difficulties: a literature review from 2010 to 2020

Educational technology research and development - Technology-based interventions have been used to improve reading skills for students with reading difficulties. Thus, many literature reviews and...     

Evaluating the quality of BEd programme: Students' views of their college experiences

Quality assurance of teacher training has become of a great concern nowadays. This paper addresses the quality of BEd programme of the University of Education (UE) Lahore. The main purpose of the study was to evaluate the quality of BEd programme with regard to the internal efficiency of Government Colleges for Elementary Teachers (GCETs), the affiliated institutions of UE. The study was conducted on a random sample of 600 BEd students drawn from 11 GCETs in Punjab province. Data was collected through a questionnaire which was validated through a pilot study in 2006. The reliability of the final questionnaire was established at 0.863 allowing the researcher to launch the study at large scale (Gay, 2000). The findings revealed that BEd programme was effective in terms of updating student teachers' knowledge and skills. Student teachers favoured the quality of BEd curriculum, lesson planning and presentation by themselves and their teacher educators, and had some reservations about the proper use of audio-visual aids for effective classroom teaching learning processes. Female gender showed more satisfaction with the quality of BEd curriculum and teaching than their male counterparts. No significant difference was found in the opinion of the students of GCETs having low, medium, and high enrolment.     

Structural and linguistic variables in selected inference patterns for bilinguals in grades six to ten

Summary This study is a preliminary correlational study. Consequently, the statements given in the discussion are tentative and imply no cause-effect relationships. In general this study supports the idea that the ability to recognize valid principles is not a unitary ability which develops with age and levels off at a fixed age in the age range 11–16 years. For one thing, decisions made by children concerning the validity of inferences do not seem to be made solely on a formal basis but also on the kind of the linguistic structures of the natural language used. Moreover, there are structural variables which seem to reflect developmental growth and variables which do not. The most important single one in the latter is decidability, i.e., ability to recognise principles with no logically necessary conclusions. Further research is being planned with the hope of refining the model and isolating and studying different variables under experimental control.American University of BeirutThis research was supported by The Science and Mathematics Education Center (SMEC) of the American University of Beirut with funds from a Ford Foundation Grant.     

Engaging postgraduates in a peer research group at the research proposal stage in a Malaysian university: support and challenges

Due to the increasing workloads for supervisors and the challenges in research proposals for postgraduates, the study focused on engaging 15 postgraduates in a Malaysian public university in a peer research group. The data was collected from observations of the group meetings, video-recorded peer feedback and follow-up interviews. The qualitative analysis of the data indicates that the research group supported the postgraduates through peer feedback practices, learning how to present proposals and defend themselves and finding directions in research proposals. Although their engagement was challenged by initial reservations of some postgraduates to present their proposals and provide feedback and issues related to provision, reception and reliability of peer feedback, these challenges were minimized through mentoring and instructional strategies. While peer research groups represent a valuable pedagogical support that complement supervisors’ support to postgraduates in developing their research proposals, the value should be maximized by integrating supervisors in research groups.     

Problem solving activity in the workplace and the school: The case of constructing solids

The purpose of the present study is to document, compare, and analyze the nature of spatial reasoning by practitioners (plumbers) in the workplace and students in the school setting while constructing solids, with given specifications, from plane surfaces. Data were collected from a plumbing workshop and five high school students while constructing a cylindrical container of capacity one-liter and height of 20 cm. The results confirm the power of activity theory and its methodology in explaining and identifying the structural differences between the two activities in the two different cultural settings. Students and plumber activity structures differed in the operational aspect (actions) and the means and concrete conditions (operations) under which such a goal is carried out. Activity theory has the potential to explain the differences between the two activities in terms of differences in the motive, social-cultural settings, the tools that were available and accessible which resulted in different actions, and the constraints (operations) under which the task was executed. Theoretical and pedagogical implications were identified. This revised version was published online in July 2006 with corrections to the Cover Date.     

Reliability assessment of networks-on-chip based on analytical models

As technology scales down, the reliability issues are becoming more crucial, especially for networks-on-chip （NoCs） that provide the communication requirements of multi-processor systems-on-chip. Reliability evaluation based on analytical models is a precise method for dependability analysis before and after designing the fault-tolerant systems. In this paper, we accurately formulate the inherent reliability and vulnerability of some popular NoC architectures against permanent faults, also depending on the employed routing algorithm and traffic model. Based on this analysis, effects of failures in the links, switches and network interfaces on the packet delivery of NoCs are determined. Besides, some extensions to evaluate a fault-tolerant method and some routing algorithms are described. The analyses are validated through appropriate simulations. The results thus obtained are exactly the same as or very close to the analytical ones.     

A comparative study of conventional and supercritical fluid extraction methods for the recovery of secondary metabolites from <Emphasis Type="Italic">Syzygium campanulatum</Emphasis> Korth

Syzygium campanulatum Korth is a plant, which is a rich source of secondary metabolites (especially flavanones, chalcone, and triterpenoids). In our present study, three conventional solvent extraction (CSE) techniques and supercritical fluid extraction (SFE) techniques were performed to achieve a maximum recovery of two flavanones, chalcone, and two triterpenoids from S. campanulatum leaves. Furthermore, a Box-Behnken design was constructed for the SFE technique using pressure, temperature, and particle size as independent variables, and yields of crude extract, individual and total secondary metabolites as the dependent variables. In the CSE procedure, twenty extracts were produced using ten different solvents and three techniques (maceration, soxhletion, and reflux). An enriched extract of five secondary metabolites was collected using n-hexane:methanol (1:1) soxhletion. Using food-grade ethanol as a modifier, the SFE methods produced a higher recovery (25.5%?84.9%) of selected secondary metabolites as compared to the CSE techniques (0.92%?66.00%).