The Effects Of Metaphors And Pair Programming On Recall And Retention Amongst Students With Different Learning Styles And Self-Regulated Learning Levels

Kajian ini bertujuan meneliti kesan tiga kaedah pengajaran iaitu kombinasi Metafora dan Pengaturcaraan secara Berpasangan (MPP), Pengaturcaraan secara Berpasangan (PP) dan kaedah Pengajaran Langsung (PL) terhadap prestasi ingatkembali dan ketekalan para pelajar sains komputer di institusi pengajian tinggi di Malaysia. The study aimed to investigate the effects of (i) Metaphors with Pair Programming (MPP), (ii) Pair Programming (PP) and (iii) Direct Instruction Method (DI) on the students' recall and retention of programming performance amongst computing students in an institution of higher learning in Malaysia

Learning Style, Metaphor and Pair Programming: Do they Influence Performance?

AbstractThe purpose of this study is to investigate the influence of learning style preference on learning C++ language, especially i n terms of the quality of codes written and the number of errors made in programming. A total of 120 computing students were involved in this seven-week study. They were randomly assigned to either a group that received the metaphor with pair programming (MPP), to another group that received pair programming (PP) only, or to a third group that received only the metaphor instruction (MI). Participants in both the MPP and PP groups worked in pairs based on the visual-verbal learning style dimension, and those in the MI group worked individually when completing programming tasks. Two computer programming coursework were used to measure the student's coding performance. The results indicated that visual students in the MPP group performed significantly better in the quality of codes and made fewer mistakes during coding than those in the PP and MI groups. Also, the MPP method did help the verbal students to excel in C++ coding as compared to the PP and MI groups. The direct correlation was observed between their quality of codes and the number of errors. Metaphors helped the visual students in developing deeper conceptual understanding by linking the known to the newly acquired concepts. In pair programming approach, the verbal students developed better understanding through peer discussions. The understanding of individual learning style is needed in order to enhance coding performance as robustness of a programme is correlated with the accuracy of statements in the programming

Super-resolution image transfer by a vortex-like metamaterial

We propose a vortex-like metamaterial device that is capable of transferring image along a spiral route without losing subwavelength information of the image. The super-resolution image can be guided and magnified at the same time with one single design. Our design may provide insights in manipulating super-resolution image in a more flexible manner. Examples are given and illustrated with numerical simulations.Comment: 7 pages, 6 figure

Fast and accurate simulations of transmission-line metamaterials using transmission-matrix method

Recently, two-dimensional (2D) periodically L and C loaded transmission-line (TL) networks have been applied to represent metamaterials. The commercial Agilent's Advanced Design System (ADS) is a commonly-used tool to simulate the TL metamaterials. However, it takes a lot of time to set up the TL network and perform numerical simulations using ADS, making the metamaterial analysis inefficient, especially for large-scale TL networks. In this paper, we propose transmission-matrix method (TMM) to simulate and analyze the TL-network metamaterials efficiently. Compared to the ADS commercial software, TMM provides nearly the same simulation results for the same networks. However, the model-process and simulation time has been greatly reduced. The proposed TMM can serve as an efficient tool to study the TL-network metamaterials.Comment: 15 pages, 13 figure

Illusion Media: Generating Virtual Objects Using Realizable Metamaterials

We propose a class of optical transformation media, illusion media, which render the enclosed object invisible and generate one or more virtual objects as desired. We apply the proposed media to design a microwave device, which transforms an actual object into two virtual objects. Such an illusion device exhibits unusual electromagnetic behavior as verified by full-wave simulations. Different from the published illusion devices which are composed of left-handed materials with simultaneously negative permittivity and permeability, the proposed illusion media have finite and positive permittivity and permeability. Hence the designed device could be realizable using artificial metamaterials.Comment: 9 pages, 4 figures, published in Appl. Phys. Lett

Increased electrical conductivity in fine-grained (Zr,Hf)NiSn based thermoelectric materials with nanoscale precipitates

Grain refinement has been conducted to reduce the thermal conductivity and improve the thermoelectric performance of the (Zr,Hf)NiSn based half-Heusler alloys. Nanoscale in situ precipitates were found embedded in the matrix with submicron grains. The lattice thermal conductivity was decreased due to the enhanced boundary scattering of phonons. The increased carrier concentration and electrical conductivity were observed compared to the coarse-grained alloys, which is discussed in relation to the existence of nanoscale precipitates, the effect of antisite defects, and composition change. It is suggested that the nanoscale precipitates play a significant role in the observed electrical conductivity increase