It will be inspiring for the students, to deal with visual learning strategy as it entails creative and critical thinking which students seem to lack. Students' difficulties in relating derivative to its graphical representation is central discussion among the mathematics community and calculus literature. This study evaluates students' ability to use Cartesian graphs, as visual tools, to reason when solving tasks on derivatives and continue to check on the types of conceptual reasoning they assumed. Two tasks were distributed to 194 pre-university students to extract and interpret properties of derivatives. Students exhibit mix levels of graph understanding depending on the degree of difficulty of the tasks, while algebraic methods still dominate their thinking. We conjecture that reading and interpreting graph are not independent of understanding the content knowledge of particular subjects or topics. The results of the study help teachers, curriculum developers and textbook authors .....

840 hits

The composites of hydroxyapatite/collagen (HA/Col) were seen to be the most encouraging bone graft because of the likenesses with the natural bones .The aim of the present study was to prepared the fish scales hydroxyapatite/collagen /silver nanoparticles (FsHA/FsCol/AgNPs) as a beads by using infiltration method. FsHA/FsCol/AgNPs composites beads were prepared by using new method (infiltration), including to infiltrated of FsHA beads in the FsCol-AgNPs solution. The composites beads of the FsHA/FsCol have been modified by incorporated with AgNPs. The chemical-physical properties for the prepared beads have been evaluated by using fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive x-ray analysis (EDX) and x ray diffraction analysis (XRD). The results had revealed that by using XRD and FTIR analysis, the peaks of functional groups of FsCol and AgNPs were observed in the matrix of the beads. FESEM had shown the morphology of beads with i.....

719 hits

[No abstract available]..

1051 hits

- The coronavirus disease 2019 (COVID-19) outbreak in December 2019 had affected the way of living for people around the world including students in educational institutions. These students had to prepare for the continuity of their study mentally and phy..

668 hits

Novel coronavirus also known as COVID-19 was first discovered in Wuhan, China by end of 2019. Since then, the virus has claimed millions of lives worldwide. In 29th April 2020, there were more than 5,000 outbreak cases in Malaysia as reported by the Ministry of Health Malaysia (MOHE). This study aims to evaluate the trend analysis of the COVID-19 outbreak using Mann-Kendall test, and predict the future cases of COVID-19 in Malaysia using Recurrent Forecasting-Singular Spectrum Analysis (RF-SSA) model. The RF-SSA model was developed to measure and predict daily COVID-19 cases in Malaysia for the coming 10 days using previously-confi rmed cases. A Singular Spectrum Analysis-based forecasting model that discriminates noise in a time series trend is introduced. The RF-SSA model assessment is based on the World Health Organization (WHO) offi cial COVID-19 data to predict the daily confi rmed cases after 29th April until 9th May, 2020. The preliminary results of Mann-Kendall test showed a de.....

504 hits

The focus on economic diversification has led to increased support for the establishment and development of SMEs by Omani government in order to contribute in GDP. Risk management has become a major challenge for SMEs in the country due to the lack of experience and knowledge. This research focuses on 'Risk Practical Management Strategies'adopted by SMEs to manage risk. The research is accomplished through a qualitative approach, gathered primary data through interviews and analyzed thematically to establish the trends and patterns in the data. The findings show that there is substantial awareness of the importance of risk management specially in financial and operational which are the key risks faced by businesses, coupled with reputational risk that is associated with the increased use of ecommerce. The RPMS are largely linked to training and developing awareness about risk among SMEs. ? 2021. Taha Redha Al Qubtan et al; published by UIKTEN. This work is licensed under the Creative C.....

555 hits

? titanium alloys are widely used in orthopaedic applications as an alternative to the high modulus ? + ? titanium alloys which leads to aseptic loosening of implants as a result of the mismatch of the modulus to that of human bone. Hydroxyapatite (HA) coating has been used to enhance the biological properties of Ti alloys. The present study determined the effect of heat treatment on the properties of plasma-sprayed low modulus Ti-13Nb-13Zr alloy using a natural and economical HA derived from fish scales (FsHA) and FsHA-doped yttria stabilized zirconia (YSZ). The microstructure was examined by SEM-EDS and the hardness was determined using Vickers hardness tester whereas the corrosion resistance was studied using potentiodynamic polarization method. The SEM micrograph of the as-coated FsHA revealed micro pores and cracks with partially melted and unmelted FsHA particles while the as-coated FsHA/YSZ samples developed denser coatings, lesser number of pores with increased number of melted.....

1024 hits

Abstract: In this work, the use of carboxymethyl cellulose (CMC) is highlighted in enhancing the controlled release behaviour of zinc/aluminium layered double hydroxide-quinclorac (Zn/Al-LDH-QC). The Zn/Al-LDH-QC-CMC nanocomposite were characterised using powder x-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric and derivative thermogravimetric analysis and field emission scanning electron microscopy. The release study was carried out in an aqueous solution of Na3PO4, Na2SO4 and NaCl, so as to mimic the environmental condition where the QC is frequently used. The Zn/Al-LDH-QC-CMC nanocomposites showed better performance in releasing QC, with prolonged release time ranging from 163?6083�min, compared to 99?2639�min for the uncoated nanocomposites. The hygroscopic nature of the CMC play a critical role in enhancing the release behaviour of the Zn/Al-LDH-QC-CMC. The kinetic study shows that the Zn/Al-LDH-QC-CMC follows the pseudo-second order kinetic model; .....

361 hits

Setiu Wetland is rapidly developing into an aquaculture and agriculture hub, causing concern about its water quality condition. To address this issue, it is imperative to acquire knowledge of the spatial and temporal distributions of pollutants. Consequently, this study applied combinations of hydrodynamic and particle tracking models to identify the transport behaviour of pollutants and calculate the residence time in Setiu Lagoon. The particle tracking results indicated that the residence time in Setiu Lagoon was highly influenced by the release location, where particles released closer to the river mouth exhibited shorter residence times than those released further upstream. Despite this fact, the pulse of river discharges successfully reduced the residence time in the order of two to twelve times shorter. Under different tidal phases, the residence time during the neap tide was longer regardless of heavy rainfalls, implying the domination of tidal flow in the water renewal within t.....

623 hits

Researching Instagram as a tool in political communication is a relatively new phenomenon since the platform only began to operate in 2010. However due to its increasing popularity, it is definitely time for more studies to be conducted. World leaders are becoming very prominent on Instagram. They are sharing both personal and political contents and are challenging the usually formal and beurecratic nature of political communication. Therefore this study attempts to explore how Instagram affects political communication by focusing on how several Malaysian politicians used Instagram as part of their communication and campaign during the 14th general election that was held on May 8th, 2018. Coding analysis was done on the Instagram posts of 8 prominent Malaysian politicians. The results showed that these politicians were very active on Instagram and have extensively used Instagram to campaign during the election thus verifying that Instagram is indeed a vital medium for political communi.....

997 hits