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UPSI Digital Repository (UDRep)
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| Latest addition to the database : |
| 7901 | 2019 Article | Multiclass benchmarking framework for automated acute leukaemia detection and classification based on BWM and Group-VIKOR Albahrey, Osamah Shihab Ahmed This paper aims to assist the administration departments of medical organisations in making the right decision on selecting a suitable multiclass classification model for acute leukaemia. In this paper, we proposed a framework that will aid these departments in evaluating, benchmarking and ranking available multiclass classification models for the selection of the best one. Medical organisations have continuously faced evaluation and benchmarking challenges in such endeavour, especially when no single model is superior. Moreover, the improper selection of multiclass classification for acute leukaemia model may be costly for medical organisations. For example, when a patient dies, one such organisation will be legally or financially sued for incidents in which the model fails to fulfil its desired outcome. With regard to evaluation and benchmarking, multiclass classification models are challenging processes due to multiple evaluation and conflicting criteria. This study structured a dec..... 2482 hits |
| 7902 | 2019 Article | Mobile-based patient monitoring systems: a prioritisation framework using multi-criteria decision-making techniques Albahrey, Osamah Shihab Ahmed This study presents a prioritisation framework for mobile patient monitoring systems (MPMSs) based on multicriteria analysis inarchitectural components. This framework selects the most appropriate system amongst available MPMSs for the telemedicineenvironment. Prioritisation of MPMSs is a challenging task due to (a) multiple evaluation criteria, (b) importance of criteria, (c)data variation and (d) unmeasurable values. The secondary data presented as the decision evaluation matrix include six systems(namely, Yale–National Aeronautics and Space Administration (NASA), advanced health and disaster aid network, personalisedhealth monitoring, CMS, MobiHealth and NTU) as alternatives and 13 criteria (namely, supported number of sensors, sensorfront-end (SFE) communication, SFE to mobile base unit (MBU) communications, display of biosignals on the MBU, storage ofbiosignals on the MBU, intra-body area network (BAN) communication problems, extra-BAN communication problems, extr..... 933 hits |
| 7903 | 2019 Article | The effect of using the manual of collaborative teaching approach to mastering the basic standard of writing Malay Language Abdul Rahim Hamdan The study was conducted to examine the effectiveness of the Collaborative Teaching Approach Manual (CTAM) on the mastery of the basic standard of literacy writing Malay language level one. The study was conducted by quasi-experiment using CTAM in teaching and facilitating. This study was conducted in Primary School in Pasir Gudang district which involved a sample of 70 students in year two. The two teachers involved were Remedial Teacher and Malay Teacher in this study. The t-test is used to test the hypothesis of the study. The findings showed that there was a significant difference to the experimental group using CTAM in achieving the overall basic standard of literacy writing Malay language students. The findings show that the use of CTAM is able to increase the level of literacy mastery more effectively to the pupils.
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| 7904 | 2019 Article | Upconversion properties of erbium nanoparticles doped tellurite glasses for high efficient laser glass Muhammad Noorazlan Bin Abd Azis Erbium nano particles (NPs) doped tellurite glasses were prepared via melt-quenched technique and their chemical composition are as follows; {[(TeO 2 ) 0.70 (B 2 O 3 ) 0.30 ] 0.7 (ZnO) 0.3 } y (Er 2 O 3 NPs) 1−y , y = 0.005, 0.01, 0.02, 0.03, 0.04 and 0.05. The amorphous state of the glass system was revealed and the structural parameters indicating the formation of non-bridging oxygen was shown. The current work underlines the spectral parameters from Judd–Ofelt (JO) studies, and upconversion spectra. The existence of erbium NPs was found experimentally using transmission electron microscopy (TEM). The Judd–Ofelt analysis suggests that the radiative probability, A rad is strong at ² H 11?2 —> ? I 15?2 and a longer lifetime at ? I 11?2 —> ? I 15?2 . The Argon laser beam was used to determine the upconversion emission peaks. The upconversion radiation emission excited at 800 nm was found in the range 390 nm.
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| 7905 | 2019 Article | Enhanced optical performance of tellurite glass doped with samarium nanoparticles for fiber optics application Muhammad Noorazlan Bin Abd Azis We report on the optical efficiency of samarium nanoparticles (NPs) doped tellurite glasses experimentally, for the first time to the best of our knowledge. A high optical efficiency of samarium NPs doped tellurite glasses stable against crystallization was fabricated via melt- quenched technique. In particular, this work underlines the enhancement of optical properties with increasing samarium NPs concentration and the change of polarizability of tellurite glass network with the presence of samarium NPs. Using X-ray diffraction (XRD) analysis, Fourier transform infrared (FTIR) analysis and transmission electron spectra (TEM), the amorphous arrangement, structural assignments and particle size had been revealed. The optical performance of samarium NPs doped tellurite glass was characterized by EL X-02C high accuracy ellipsometer and UV-Vis spectrophotometer. Based on ellipsometer and UV-Vis spectrophotometer, the refractive index was found slightly increases meanwhile the optical band ..... 1033 hits |
| 7906 | 2019 Article | Incorporation of electrochemically exfoliated graphene oxide and TiO2 into polyvinylidene fluoride-based nanofiltration membrane for dye rejection Muhammad Noorazlan Bin Abd Azis In this work, the novel direct synthesis method of dimethylacetamide-based graphene oxide (GO) was performed through electrochemical exfoliation assisted by commercially available single-tail sodium dodecyl sulphate (SDS) surfactant. Then, the synthesised GO (SDS–GO) was incorporated into polyvinylidene fluoride (PVDF) solution to produce a nanofiltration (NF) membrane through the phase immersion method. The addition of GO into the preparation of membrane solution alters the membrane morphology and improves the hydrophilicity. TiO2 was also used as an additive for the NF membrane fabrication to further increase the membrane hydrophilicity. The fabricated PVDF/SDS–GO/TiO2 and PVDF/SDS– GO NF membranes were compared with pure PVDF membrane. Then, the fabricated NF membranes were tested for methylene blue (MB) rejection with 10 ppm MB concentration. On the basis of the dead end cell measurement operated at the pressure of 2 bar, the PVDF/SDS–GO/TiO2 presents high MB rejection (92...... 1920 hits |
| 7907 | 2019 Article | Dielectric behavior in erbium-doped tellurite glass for potential high-energy capacitor Muhammad Noorazlan Abd Azis The use of erbium ions, Er3+ to enhance the dielectric properties is investigated in tellurite glass system for the frst time, tothe best of our knowledge. A glass series of tellurite glass with chemical composition, {[(TeO2)70(B2O3)30]70(ZnO)30}100−y(Er2O3)y (y = 0, 0.005, 0.01, 0.02, 0.03, 0.04 and 0.05) was fabricated via melt-quenched technique. The X-ray difraction and Fourier transform infrared spectroscopy analysis proved the amorphous structure and the formation of nonbridging oxygen in the glass system. The Er3+ ions afect greatly to the dielectric constant, ε′ in which the dielectric constant, ε′ show high value at a lower frequency and higher temperature (above 110 °C). The reduction of dielectric constant, ε′ is found with the increment value of frequency, which corresponds to the formation of the hindrance efect on heavy dipoles caused by the mixed transition-ion efect. Meanwhile, the dielectric constant, ε′ is enhanced with the increase of temperature. The ..... 1203 hits |
| 7908 | 2019 Article | Optical and structural properties of rice husk silicate incorporated borotellurite glasses doped with erbium oxide nanoparticles Muhammad Noorazlan Abd Azis A system of erbium oxide nanoparticles doped rice-husk-silicate borotellurite glasses with compositional formula, {[(TeO2)0.7 (B2O3)0.3]0.8 (SiO2)0.2}1−y (Er2O3 NPs)y with y = 0.01, 0.02, 0.03, 0.04 and 0.05 was fabricated using the method of melt-quenching. Various characterizations and measurement techniques such as density and molar volume, X-ray diffraction, Fourier transform infrared, transmission electron microscopy and UV–Vis spectroscopy were carried out to study the structural, morphological and optical properties of the fabricated glasses. The density values for the glasses increased from 4.1900 to 4.6003 g cm−3 with the addition of 1% to 5% of Er2O3 NPs in the glass structure. The increase can be ascribed to increase in the overall molar weight of the glass caused by the higher molecular weight of erbium. The microstructural nature revealed in the glass morphological evidence of nanoparticle agglomerations in the glasses. From the UV–Vis spectra both direct and i..... 940 hits |
| 7909 | 2019 Article | Masalah buli dalam kalangan murid: apakah kata guru? Nor Junainah Mohd Isa Kajian ini berbentuk analisis kandungan kualitatif bertujuan meneroka pandangan guru-guru mengenai masalahbuli dalam kalangan murid di sekolah. Respons bertulis daripada para peserta diperoleh melalui edaran set soalan berbentuk umum dan terbuka yang dihantar menggunakan mel elektronik. Penganalisisan data pula dibuat secara induktif untuk mengenal pasti kategori-kategori dan tema-tema yang terkandung dalam bahan kajian. Dapatan kajian menunjukkan bahawa terdapat sepuluh tema merangkumi definisi, lokasi, murid yang terlibat, punca, dan keseriusan masalah buli. Selain itu, didapati majoriti guru kurang jelas tentang definisi buli. Namun begitu, mereka beranggapan bahawa masalah buli dalam kalangan murid adalah serius dan perlu dibanteras dengan segera. Memandangkan dapatan hanya terhad kepada perbincangan tema dan kategori, maka dicadangkan agar kajian lanjutan, khususnya kajian berbentuk grounded theory dijalankan. Kajian sebegini membolehkan pengkaji meneroka pengalaman guru dengan le..... 1731 hits |
| 7910 | 2019 Article | Optical and thermal properties of TeO2-B2O3-Gd2O3 glass systems Muhammad Noorazlan Abd Azis New glass samples with composition (1 – x)[(TeO2)70(B2O3)30] – x(Gd2O3) with x = 0.2, 0.4, 0.6, 0.8 and 1.0 in mol% have been synthesized by conventional melt-quenching techniques. X-ray diffraction (XRD) studies were performed in order to confirm the amorphous nature of the samples. The density of the samples has been found to vary with the Gd2O3 content, whereas an opposite trend has been observed in the molar volume. The analysis of Fourier Transform Infrared (FT-IR) spectroscopy of the samples showed that the glass network is mainly built of TeO3, TeO4, BO3 and BO4 units. The addition of Gd2O3 changed the refractive index, optical band gap and Urbach energy of the glass samples. The thermal properties of the studied glasses were investigated by measuring the thermal diffusivity of the samples by using photoflash method at room temperature.. 1355 hits |
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