377 research outputs found
Risk Management Practices of Selected Islamic Banks in Malaysia
This study explores the risk management practices of major Islamic banks in Malaysia with the objective of having deeper understanding of the practices and identifying ways for further improvements. Various aspects of risk management practices are assessed through survey questionnaires, particularly those relevant and specific to the case of the Islamic banks. The study finds that the Islamic banks adopt good risk management practices with few areas of improvements include the use of computerised support systems and more sophisticated approaches to measure risks and the use of Shari\u27ah compliance techniques to mitigate risks. By assessing their current risk management practices, the study hopes to contribute in terms of recommending strategies to strengthen the risk management practices of the Islamic banks so as to increase the overall competitiveness in the Islamic banking industry
Closed Hollow Bulb Obturator-One-Step Fabrication: A Clinical Report
A method is described for the fabrication of a closed hollow bulb obturator prosthesis using a hard thermoforming splint material and heat-cured acrylic resin. The technique allowed the thickness of the thermoformed bulb to be optimized for weight reduction, while the autopolymerized seal area was covered in heat-cured acrylic resin, thus eliminating potential leakage and discoloration. This technique permits the obturator prosthesis to be processed to completion from the wax trial denture without additional laboratory investing, flasking, and processing.Article URL: http://onlinelibrary.wiley.com/doi/10.1111/jopr.12036/abstrac
Technical and vocational education students’ perception of using learning videos during Covid-19 pandemic period
The closure of Higher Education Institutions and Schools due to COVID-19 pandemic has affected the structure of Learning and Teaching (T&L) from direct method at institutions to Open and Distance Education (ODE) completely. All face-to-face T&L activities are not allowed except for certain categories of students who need to return to campus in stages to participante in T&L activities in full compliance of the Standard Operating Procedures (SOP) set by prioritizing safety measures and social distancing. This study used a quantitative approach by using online questionnaire as instrument (google form). A total of 73 Technical and Vocational Education (TVE) students from various backgrounds of respondents participated in the study. The findings of the study showed that there was a strong correlation between the aspects of interest and gender of TVE students in using learning videos during the COVID-19 pandemic period (r = .701). Therefore, all parties must prepare to face the new norm, namely the ODL method as a whole during the COVID-19 pandemic period to continue the T&L process for students
Ujian ricih terus permukaan satah ketakselanjaran granit (Direct shear test of granite discontinuity plane surfaces)
Parameter kekuatan ricih seperti sudut geseran permukaan ketakselanjaran batuan merupakan antara data penting bagi reka bentuk struktur kejuruteraan batuan seperti pengorekan bawah tanah dan cerun potongan. Ujian ricih terus beban normal tetap telah dilakukan pada permukaan buatan potongan gergaji batuan granit segar dan terluluhawa sedikit untuk menentukan sudut geseran asas permukaan satah ketakselanjaran. Sampel granit diperoleh dari Kuari Kajang Rock, Semenyih, Ulu Langat, Selangor, Lebuhraya Silk Kajang (km 14.6), Selangor, Jalan Pos Selim-Kampung Raja (km 30-29), Cameron Highland, Pahang/Perak dan Kuari JKR Bukit Penggorak, Kuantan, Pahang. Sebanyak 84 ujian ricih terus telah dijalankan pada batuan granit iaitu 65 ujian pada batuan segar dan 19 ujian pada batuan terluluhawa sedikit. Untuk batuan granit segar, sudut geseran asas ialah 42° ± 0.6° dengan sisihan piawai sebanyak 2.26 dan pekali penentuan, R2 sebanyak 0.98. Untuk granit terluluhawa sedikit, sudut geseran asas ialah 38° ± 1.9° dengan sisihan piawai sebanyak 3.99 dan pekali penentuan, R2 sebanyak 0.97. Nilai-nilai ini adalah lebih tinggi daripada nilai yang selalu dianggap untuk batuan granit segar iaitu 30°-35°
Horizontal axis wind turbine performance analysis
The present work uses the method of Blade Element Momentum Theory as suggested by Hansen. The
method applied to three blade models adopted from Rahgozar S. with the airfoil data used the data provided by Wood
D. The wind turbine performance described in term of the thrust coefficient CT, torque coefficient CQ and the power
coefficient Cp . These three coefficient can be deduced from the Momentum theory or from the Blade element
Theory(BET). The present work found the performance coefficient derived from the Momentum theory tent to over
estimate. It is suggested to used the BET formulation in presenting these three coefficients. In overall the Blade
Element Momentum Theory follows the step by step as described by Hansen work well for these three blade models.
However a little adjustment on the blade data is needed. To the case of two bladed horizontal axis wind turbine,
Hansen’s approach works well over if the blade radius is RB the calculation should start from r = 0.1RB
The Effects of Nano Fillers on Space Charge Distribution in Cross-Linked Polyethylene
The performance of polymeric insulation will be distorted by the accumulation of space charge. This will lead to local electric field enhancement within the insulation material that can cause degradation and electrical breakdown. The introduction of nanofillers in the insulation material is expected to reduce the space charge effect. However, there is a need to analyze potential nanofillers to determine the best option. Therefore, the objective of this research work is to examine two types of nanofillers for Cross-Linked Polyethylene (XLPE); Zinc Oxide (ZnO) and Acrylic (PA40). The effects of these nanofillers were measured using the Pulsed-Electro Acoustic (PEA) method. The development of space charge is observed at three different DC voltage levels in room temperature. The results show that hetero charge distribution is dominant in pure XLPE materials. The use of both nanofiller types have significant effect in decreasing the space charge accumulation. With nanofillers, the charge profile changed to homo-charge distribution, suppressing the space charge formation. Comparisonbetween both the nanofillers show that PA40 has better suppression performance than ZnO
MPEG-4 video transmission using distributed TDMA MAC protocol over IEEE 802.15.4 wireless technology
The issues of green technology nowadays give an inspiration to the researcher to make all the future design to be energy efficient. Medium Access Control (MAC) layer is the most effective layer to provide energy efficient due to its ability to control the physical radio directly. One of the important applications in the future is a video transmission that can be transmitted with low-cost and low power consumption. MPEG-4 is one of the international standards for moving video. MPEG-4 provide better compression and primarily design at low bit rate communication. In order to achieve good quality for video application, the design at MAC layer must be strong. Therefore, to increase the performance of the MPEG-4 in IEEE 802.15.4, in this paper we propose a cross layer design between MAC layer and Application layer. A priority queue will be implemented at MAC scheduling depends on the level of frame important in MPEG-4 format frame. A distributed Time division Multiple Access (TDMA) will be used for MAC protocol to provide reliable data transmission for high priority frame
Design and Shape Optimization of Strain Gauge Load Cell for Axial Force Measurement for Test Benches
The load cell is an indispensable component of many engineering machinery and industrial automation for measuring and sensing force and torque. This paper describes the design and analysis of the strain gauge load cell, from the conceptional design stage to shape optimization (based on the finite element method (FEM) technique) and calibration, providing ample load capacity with low-cost material (aluminum 6061) and highly accurate force measurement. The amplifier circuit of the half Wheatstone bridge configuration with two strain gauges was implemented experimentally with an actual load cell prototype. The calibration test was conducted to evaluate the load cell characteristics and derive the governing equation for sensing the unknown load depending on the measured output voltage. The measured sensitivity of the load cell is approximately 15 mV/N and 446.8 µV/V at a maximum applied load of 30 kg. The findings are supported by FEM results and experiments with an acceptable percentage of errors, which revealed an overall error of 6% in the worst situation. Therefore, the proposed load cell meets the design considerations for axial force measurement for the laboratory test bench, which has a light weight of 20 g and a maximum axial force capacity of 300 N with good sensor characteristic
Analysis of thin walled tube Al 3003 H12 under quasi-static axial crush mode using finite element method
Experimental crashworthiness investigation on thin walled tube structure always contribute into a complicated process with huge amount of cost is wasted on specimen preparation perfection. Advance numerical solution has been found as a significant option in order to simplify the process while enhancing the understanding of this crashworthiness behavior. Therefore, current works have been carried out based on finite element method to perform a quasi-static axial crush on selected thin walled tube structures. Here, the circular and rectangular tubes of aluminium alloys Al 3003 H12 sections are selected based on its wide application on front chassis rail component. Essential boundary conditions have been applied in order to accurately simulate the quasi-static axial crush behavior. Preliminary verification results has shown that current numerical method is capable to produce a good correlation results with selected experimental data in terms of energy absorption, crushing length and collapse starting point. However, there is also a slight discrepancy observed in cylindrical 1.5 mm deformation mode behavior
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