The Role of Information Visualization (InfoVis) in creating Multi-dimensional View of Student Report System with the use of Business Intelligence

Information Visualization (InfoVis) deals with data that is usually abstract, high-dimensional, and structured in a complex way. InfoVis enable viewer to gain knowledge about the internal structure of the data and causal relationship in it. Normally, it’s compact graphical presentation and user interface for manipulating large numbers of items and possibly extracted from far larger datasets. Parallel to this, InfoVis enables users to make discoveries, decisions, or explanations. By implementing the features of InfoVis to the student coursework reporting, it will help students in decision making of their studies, explanations on their academic performance, and increasing their interest and awareness to their academics performances

The Role of Information Visualization (InfoVis) in creating Multi-dimensional View of Student Report System with the use of Business Intelligence

Information Visualization (InfoVis) deals with data that is usually abstract, high-dimensional, and structured in a complex way. InfoVis enable viewer to gain knowledge about the internal structure of the data and causal relationship in it. Normally, it’s compact graphical presentation and user interface for manipulating large numbers of items and possibly extracted from far larger datasets. Parallel to this, InfoVis enables users to make discoveries, decisions, or explanations. By implementing the features of InfoVis to the student coursework reporting, it will help students in decision making of their studies, explanations on their academic performance, and increasing their interest and awareness to their academics performances

Penggunaan Aplikasi Pembelajaran Mudah Alih dalam Pembelajaran Matematik bagi Pelajar Sekolah Menengah

Penggunaan aplikasi untuk peranti mudah alih telah berkembang dengan pesat dan menjadi isu yang hangat diperkatakan dalam bidang pendidikan serta perkembangan pelajar. Fleksibiliti, mesra pengguna, kecil, kemudahan akses dan pelbagai keupayaan teknologi mudah alih yang lain menjadikannya berharga dan menjadi keperluan pada masa kini. Kajian ini adalah bertujuan untuk mengenal pasti pelajar sekolah menengah menggunakan aplikasi mudah alih bagi subjek matematik dalam pembelajaran secara kendiri melalui satu kajian kes. Kajian ini dilaksanakan di sebuah sekolah menengah di Terengganu. Pengumpulan data juga dilakukan dengan menggunakan instrumen temu bual kepada 10 orang pelajar daripada populasi 233 orang pelajar sekolah menengah di Terengganu. Hasilnya menunjukkan terdapat perbezaan pembelajaran secara kendiri bagi pelajar lelaki dan perempuan dalam penggunaan aplikasi mudah alih. Oleh itu, pelajar sekolah menengah masih perlu diberikan pengetahuan dan motivasi mengenai pembelajaran secara kendiri kerana penggunaan teknologi seperti aplikasi mudah alih dalam pengajaran dan pembelajaran adalah salah satu strategi pengajaran untuk perkembangan kemahiran metakognisi dalam penyelesaian masalah matematik

The Analysis of Stress Distribution on the Physical Model of Road Base Layer

The road base layer as a primary foundation for the flexible pavement needs to provide adequate strength for the working load. The road base layer which is constructed from a gradation of aggregate must distribute the stress as wide as possible to reduce the load per square area. The action of stress distribution on the road base layer mostly relies on its grain-to-grain interaction. This research used the natural crushed aggregate (NCA) and the recycled concrete aggregate (RCA) as the road base materials. Physical models were conducted to evaluate the stress distribution under a static load. The physical model was using a box with a dimension of 620 mm x 620 mm x 500 mm. There were three layers for the physical model such as the road base layer, sub-base layer, and subgrade layer. The thickness of each layer was 200 mm, 100 mm, and 200 mm respectively. A static load with a maximum of 20 kN in the increment of 1 kN was added. The result of the scaled-model was not as similar to the theory of Boussinesq related to the stress distribution. The characteristic of the materials will show a different behavior of the stress distribution

Settlement reduction of dredged marine soils (DMS) admixed with cement & waste granular materials (WGM): 1-D compressibility study

Dredged marine soils (DMS) are considered as geo-waste and commonly disposed far into the sea. Environmental impacts raised from dredging such as turbidity and disturbance of marine ecosystem had increased the social demand to reuse DMS in engineering application. Typically, DMS have low shear strength and low bearing capacity. Hence, the DMS could be strengthened up by soil solidification. In present study, waste granular materials (WGM) such as coal bottom ash (BA) and palm oil clinker (POC) were utilized as additional binder to cement. The DMS were solidified with 3 series of admixtures; namely cement and/or WGM. The factor that influenced the compressibility of the soil sample such as percentages of admixtures were considered. Proportioned samples of 10, 15 and 20 % of cement, and/or 50 and 150 % of WGM of dry weight of DMS were subjected to one-dimensional oedometer test. The test samples were cured for 7 days in room temperature. Results show that cement- and WGM-admixed DMS have reduced the soil’s compressibility considerably than the untreated sample. As expected, the cemented soil had significantly reduced the settlement better than WGM-admixed soil. Hence, homogeneous samples of 15C50BA and 10C100POC produced almost similar reduction of compressibility as sample 20C. Therefore, reusing WGM as partial replacement of cement in DMS could provide beneficial reuse of these materials

Flexural behaviour of plain concrete prism strengthened by textile fine grained mortar

This paper presents a flexural strength study of concrete incorporated with textile fine grained mortar (TFGM) as a strengthening laminate. TFGM is a combination of fine grained mortar (FGM) with alkali resistant glass fabric (AR glass). Fine grained sand with 600 m maximum size was used in FGM and fly ash (FA) or rice husk ash (RHA) has been used as a partial substitute for ordinary Portland cement (OPC). The potential of TFGM as strengthening laminate was tested under monolithic load with three point flexure loading. The TFGM were laid in layers of two, four, six, and eight. Results shown a promising flexure enhancement of up to three times of unstrengthened concrete when eight layers of both RHA and FA were laid. Load bearing capacity and ductility of the samples increased about 200% and 61%, respectively, compared to control samples as well. The outcome shows a highly potential use of agro-waste as cement replacement to produce load bearing structural component

Bonding Strength between Geopolymer Fly Ash to Ordinary Portland Cement Concretes using Mohr-Coulomb Theory

This paper presents an experimental study to analyse the bonding strength between geopolymer concrete (GC) and normal concrete (NC) bond substrate. Three different strengths of GC which were 80 MPa, 85 MPa and 90 MPa were bonded to 30 MPa NC and denoted as NC30-GC80, NC30-GC85 and NC30-GC90. Slant shear and split tensile tests were conducted to investigate the bonding strength between two different substrates. The effect of bonding was then determined by using Mohr-Coulomb theory where critical bonding condition (smooth surface) was created. From the analysis, it was found that NC30-GC80 had the most powerful self-adhesion between GC towards NC. This result indicated the highest bonding strength of GC to NC at critical condition. Such strong bond was obtained by the effect of self-adhesive from GC to NC. The self-adhesive characteristic which represented by pure shear strength was obtained from Mohr-Coulomb theory

Physico-mechanical properties of polymer concrete containing micro-filler of palm oil fuel ash

Objective of this study is to present a research conducted on ground (fine) and unground (coarse) POFA in polymer concrete (PC) followed by determination on the physico-mechanical properties of PC. Physical properties of micro-fillers and mechanical properties of produced PCs were characterized. Calcium carbonate and silica sand were also used as micro-fillers for comparison purpose. The samples were subjected to compression and flexural. Morphology images of the particles were captured under morphology test to support the findings. Results showed that fine POFA micro-filler has a highly promising potential in becoming PC filler compared to coarse micro-filler. Additionally, its produced PC had comparable strength to PC with calcium carbonate. From the strength development and sustainability stand point, fine POFA has demonstrated its capability to produce quality and sustainable P

Long term studies on compressive strength of high volume ultrafine palm oil fuel ash mortar mixes

The long term characteristics of nano palm oil fuel ash in the mortar were investigated. This study covers basic properties like the morphology, porosity, compressive strength and microstructure properties with regards to the variations in the mix design process of mortar. To get a better performance in terms of strength development, the ash used has gone through heat treatment and was ground up to nano size. The mortar mixes were cast in 70x70x70mm cubes for compressive strength test. The incorporation of more than 80% nano size palm oil fuel ash as cement replacement has produced a mortar having a compressive strength more than OPC mortar at a later age. By treating the palm oil fuel ash to nano size, help reduce the cost of expensive admixture for improving the compressive strength of mortar. The results also revealed that the compressive strength of mortar using nano size palm oil fuel ash shows higher value as compared to initial strength at the later age of 1 year by 25%. The porosity of 80% nano palm oil fuel ash mortar reduced 51% as the age of curing increased. The overall results have revealed that the inclusion of high volume nano palm oil fuel ash can produce a mortar mix with high strength, low porosity, good quality and most importantly that is more sustainable

Normal concrete to polymer concrete bond strength: mohr-coulomb theory

This paper discusses an experimental study conducted to evaluate the bonding strength between normal concrete (NC) and polymer concrete (PC) substrate. Ground palm oil fuel ash (GPOFA) was incorporated as micro-filler in this polymer concrete (PC-GPOFA) to investigate its effect on bonding strength. As comparisons, PC containing others filler were prepared, i.e., PC incorporating calcium carbonate (PC CaCO3), silica sand (PC Sand), and unground POFA (PC UPOFA) filler. Two tests were conducted to investigate the bonding between two substrates - slant shear and splitting tensile tests. After critical condition surface (smooth surface) was prepared, the effect of bonding was determined using mohr-coulomb theory. Overall results indicated that PC incorporating GPOFA improved the bonding to normal concrete. This result indicates that the bonding strength of NC to PC at critical condition is affected by self-adhesion of polymer concrete to the normal concrete. The self-adhesive characteristic of polymer concrete to normal concrete can be easily identified in mohr-coulomb analysis. All-in-all, the PC incorporating ground POFA could improve the bonding to the normal concrete