The response of a high voltage transformer with various geometries of core joint design

The core losses in a three phase transformer can be significantly reduced by improving the core joint geometry. The researchers were applied numerous types of T-joint designs in order to reach the optimum design that can be used in three phase transformer to reduction the losses. Two types of T-joint design are presented in this paper; T-joint with 90° butt-lap design and T-joint with 45° mitered design. A 3-phase distribution transformer was simulated in 3D using Ansys Maxwell software. The core loss for a three-leg three phase transformer rated 1000 KVA and the flux density distribution are investigated. The simulation results show the core losses were increased up to 3% and the flux density was increased to reach more than 22% flux density become higher when using T-joint with 90° butt-lap design as compared with T-joint with 45° mitered design

Shariah audit practices in Malaysia: moving forward

The Shariah audit being a monitoring tool for ensuring Shariah compliance proved to be an important component in the operations of Islamic financial institutions. In the case of Malaysia, Bank Negara Malaysia has issued a Shariah Governance Framework in 2010 which categorically made Shariah audit function as one of the required functions in Islamic Financial institutions in addition to Shariah Review, Shariah Research and Shariah Risk Management. In line with this, this study aimed at exploring the extent of practitioners’ awareness and perceptions of Shariah audit, the possible challenges associated with it as well as its future implications. The study used 83 practitioners drawn from various Islamic financial institutions and external audit firms that are involved in Shariah audit services through purposive sampling procedure. Questionnaire instrument was employed in generating the data. The findings of the study showed that practitioners’ awareness is satisfactory, as the majority of them got to know about Shariah audit through an educational programme, which gave them the opportunity to express what ought to be the desirable practice of Shariah audit. Similarly, the findings revealed that lack of the independent Shariah audit report, standalone Shariah audit framework as well as inadequate competent Shariah auditors are among the main concern in the practice. Moreover, the findings also showed that Shariah audit will have a high potential to take up as a marketable career in the near future. Finally, the findings suggest that integration of Shariah audit in accounting courses in institutions of higher learning; comprehensive Shariah audit framework and standards; new regulatory/professional body with a mandate of supervising Islamic financial institutions as well as a professional certification in Shariah audit should be made available. It is hoped that the study will contribute towards the development of desired Shariah audit practices in Malaysia

Analysis on magnetic flux density and core loss for hexagonal and butt-lap core joint transformers

This paper presents the results of new hexagonal configuration at the T-joint of three-phase transformer core. The proposed model is compared with previous T-joint design, Butt-lap, which is widely used at present by many transformer manufacturers. The magnetic flux density distribution and core loss of a transformer rated 1000kVA are analyzed for the two types of T-joint design. The 3D simulation are carried out by using the ANSYS-Maxwell software. The results show that the magnetic flux density of the hexagonal shape T-joint is well distributed compared to that in the Butt-lap T-joint design. The core loss for the proposed model (hexagon) T-joint indicates a reduction of more than 11 % compared to the Butt-lap T-joint design

New optimization technique to design the core of three-phase transformer

Reduction losses in three-phase transformers have drawn the attention of researchers, in the recent years. In this study, an intelligent algorithm employing particle swarm optimization (PSO) has been used to get the optimum T-joint design of a core in a three-phase transformer. This technique was employed to design a new geometry of a joint to obtain the minimum loss in a three-phase transformer. In achieving this target, a 3D finite element method had been used to simulate the proposed transformer model. Power losses in the core and winding losses had been considered as the heat sources, and the results were validated based on the test data obtained from transformer factory. The results presented that the total losses have been decreased up to 10% compared to the corresponding values from common designs. Moreover, the core losses have been reduced in the range of 11% compared to similar parameters in the conventional design

TNA: value creation in competency-based training of teaching and learning / Prof. Dr. Mohd Mustafa Mohd Ghazali, Prof. Dr. Zubaidah Zainal Abidin and Associate Prof. Posiah Mohd Isa

Very often academicians' needs for training are given the least priorities in the human resource training and development of any institutions of higher learning in Malaysia. In the era of globalization, graduates must be equipped with the necessary knowledge and skills in order to meet the challenges of borderless corporate environment. Academicians are responsible in grooming the students with the relevant tools to be at competitive edge. Yet academicians are not exposed or given the opportunity to upkeep themselves with the necessary information or guidance which can be used in the process of delivering lectures to the students. This study explores the training needs and opportunities among lecturers in UiTM and its association with the lecturers' competency level. Results from this study could provide a platform for staff's training and development and assist in planning, organizing and implementing future training programme

A Study On The Perfomance Of Sedimentation Tank At The Sungai Kampar Water Treatmeny Plant.

This paper discusses the performance of soIid-liquid separation pfocess at the Sg Kampar Water Treatment works

Variation in yield components and vegetative traits in Malaysian oil palm (Elaeis guineensis jacq.) dura × pisifera hybrids under various planting densities

A long term evaluation of a planting density trial on selected 15 dura × pisifera oil palm hybrids from six Malaysian seed producers was laid out in equilateral triangle in four planting densities, namely 120 (D1), 148 (D2-Control), 170 (D3) and 215 (D4) palms/ha at the Malaysian Palm Oil Board (MPOB) Ulu Paka Research Station, Terengganu, Malaysia. Data on fresh fruit bunch (FFB), bunch number (BNO), bunch weight (ABW), fruit/bunch (F/B), oil/bunch (O/B), frond production (FP), rachis length (RL) and palm height (HT) were collected from 1987 to 2003. Analysis of variance (ANOVA) of pooled data over years and densities showed significant differences among progenies (G) and agencies (A) for all traits, reflecting their varying genetic backgrounds. Variations in planting densities (D) were significant for ABW, F/B and FP. Statistical differences were detected in G × D interactions for ABW, RL and FP and A × D interaction for ABW. FFB yield among agencies ranged from 18.4 to 21.5 t/ha/yr. The highest BNO was obtained from agency A2. Oil per bunch varied from 25.9 to 28.2%; the highest was observed in Agency A1. HT of the 20-year old palms pooled over planting densities ranged from 8.99 (Agency A1) to 10.02 m (Agency A5) with the height increment (HI) among agencies ranged from 50 to 56 cm/yr. Variation for HT among densities was between 8.70 m (D1) and 10.43 m (D4) with height increment between 48.3 cm/yr and 58 cm/yr. FP ranged from 17.1 (D4) to 19.1 (D1) fronds/yr while RL ranged from 6.20 (D1) to 6.86 m (D4). Density D2 (Control) recorded the highest FFB (21.7 t/ha/yr) followed by D3 (20.9 t/ha/yr), D4 (19.2 t/ha/yr), and D1 (18.6 t/ha/yr). Generally, HT was significantly and positively correlated with FFB components. FP also associated positively with HT and ABW. RL showed negative correlation with FP across all planting densities but generally has no association with FFB and O/B. In this trial, density 2 (148 palms/ha) was the ideal planting density for maximum FFB and oil yield (6.0 t/ha/yr) per unit land area on inland soil and has been the standard practice of the oil palm industry

Obesity is associated with depression in Malaysian schoolchildren: A cross-sectional study

Background: Overweight and obesity, which may lead to depression, have become prevalent among children worldwide. Hence, this study aimed to measure obesity and depression among schoolchildren in Kuantan. Methods: This cross-sectional study was conducted in three different primary schools in Kuantan by purposive sampling. With consent from their parents/guardians, participants were given a self-administered questionnaire. Demographics and anthropometric measurement data were self-reported on the basis of the school records. Furthermore, body mass index was calculated. Data were analyzed using SPSS version 20.0, and chi-square and correlation tests were conducted for the variables. Results: Among the 300 schoolchildren who responded, 14.3% were underweight, 37.7% were normal, 11% were overweight, and 37% were obese. Statistically, obesity and ethnicity, as well as obesity and sex, were not associated. Conversely, obesity and age, as well as obesity and depression, were significantly associated. Conclusion: Depression is associated with obesity among schoolchildren. Hence, a special approach for designing and implementing prevention programs is necessary to reduce the risk of obesity-led depression and other forms of comorbidity later in life

Spirituality and quality of life among university students during Covid 19 Pandemic

This research is aimed to examine the quality of students’ life during the COVID-19 pandemic. In other words, we want to explore how much spiritual wisdom the students possess which enables them to successfully face the catastrophe. To measure the quality of student life, WHOQoL-BREF questionnaire which is short questionnaire consists of 26 items version of World Health Organization Quality of Life assessment (WHOQoL-100), with some amendments, will be employed. The scope of this cross-sectional study is confined to students who are taking university courses in semester 2, 2019/2020, with the total of 160 samples. This research is considered important because spirituality not only allows humans to respond appropriately in a specific circumstance or scenario, but also to analyze why they are in that state, and how they can adapt, accept and adjust to the situation. Spirituality is the intelligence of the soul, the wisdom with which we can heal ourselves and make ourselves whole, full of sense, intent and value, particularly in times of pandemic, adversity and uncertainty like COVID-19 in relation to the link between superpower, oneself, others and nature