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Different types of screen time and its effect towards social and emotional development among preschoolers in Labuan
No full textStrategi komunikasi efektif pengguna Facebook berpengaruh (Facebook influencer) dalam membentuk budaya kedermawanan di Malaysia
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No full textThis study investigates perceptions of employers and graduates to identify employability
skills expected by employers and graduates in Bangladesh. The study conducted a
questionnaire survey with employers of several industries and business graduates of private
universities selected conveniently. The respondents were asked to rate the 23 employability
skills using a seven-point Likert-type scale. Results were analyzed by utilizing independent
sample t-test on data collected from 263 graduates and employers. Results reveal that
computer literacy, teamwork and cooperation, self-confidence, interpersonal
understanding, and English language proficiency were the five most expected skills to
employers, whereas analytical thinking, English language proficiency, creativity, innovation,
and change, teamwork and cooperation, and achievement orientations were the most
valued skills to graduates for their employability. Findings also reveal significant differences
between the opinions of graduates and employers about employability skills. Results provide
graduates a clear understanding about important skills they need to learn and expected by
employers. Findings help universities and faculties to revise business programs to revise
course curriculums to better address the skill demands of employers. This study addresses
the research gap to conduct further studies in developing perspective on graduate
employability taking opinions from graduates and employers
Cerebral venous thrombosis: an unusual cause of complex ophthalmoplegia in an elderly man
No full textCerebral venous thrombosis (CVT) is a neurological condition occurring because of thrombosis involving the cerebral venous sinuses. This case report is an unusual clinical manifestation of cerebral venous thrombosis in a 76-year-old Chinese man who presented with restricted eye movement and double vision. Despite extensive investigation, there was no better explanation for his clinical symptom and sign apart from cerebral venous thrombosis which was confirmed by magnetic resonance venography (MRV) of the brain. Once cerebral venous thrombosis was diagnosed, he was initiated on anticoagulation and discharged with oral warfarin. This case emphasizes the need to consider cerebral venous thrombosis as one of the rare causes of complex ophthalmoplegia especially when typical cardiovascular risk factors are lacking in an individual
Investigating the utilisation of the micro-functions of Bahasa Melayu by English teachers
No full textThe controversy over the use of first language (L1) in the second language (L2) classroom has been discussed extensively by numerous scholars in which they either advocate or reject the utilisation of L1 in the target language (TL) classroom. Although the proponents of the monolingual approach argued that there are many disadvantages of utilising the L1, they have yet to present empirical findings to demonstrate that L1 could ultimately hinder the L2 learning. In most L2 classrooms, teachers and students often share similar experiences of L1 utilisation, including in English language classroom in Malaysia. Therefore, it is common for teachers to feel the inclination to use L1 when the other options have failed to explain something during the lessons. A considerable number of local and international studies have pointed out on the wide range of L1 use by L2 teachers. Thus, this study intended to investigate the specific utilisation of micro-functions of L1 (Bahasa Melayu) by English (L2) teachers. A total of 899 English teachers from Pahang were randomly selected to respond to a survey questionnaire which consists of 43 items that represent a myriad functions of Bahasa Melayu (BM). The findings of the study showed that the majority of the respondents utilised a significant number of micro-functions of BM to teach English particularly to assist them in delivering the content of the lessons while its usage was so significant for classroom management and social and interpersonal reasons. The study proposes a need for proper guidelines on how and when teachers should use L1 in L2 teaching
No full textThe main objective of power transmission and distribution companies is to provide reliable power with minimal Customer Interruptions (CI) and Customer Interruption Minutes (CMI). For these companies, processes and tools that accurately predict the reliability and availability is very important. Studies have shown that the Reliability Block Diagram (RBD) simulation methodology provides more precise results than other methods. Also, the use of field data produces specific and more accurate results than using generalized failure rates for the substation equipment. In this paper, we present how the RBD technique is used to develop precise reliability models for 120 substations using field data. Failure data from over 7000 pieces of equipment was collected, and Weibull distribution was used to create hazard functions for the models. Since substation equipment is repairable, the Restoration Factor (RF) played an essential role in the reliability analysis. A mixed analysis is used to calculate the RF. This paper presents the procedure and methodology used to develop the reliability models, perform a Monte Carlo Simulation, and calculate the CI and CMI for each substation. In addition, the case study shows how unique modeling and statistical methods can be used to perform reliability assessments when individual equipment failure data is not available
Reliability Improvement Study of a Distribution Network with Distributed Generation
No full textThe reliability of power supply to customers is an important factor in the design, planning and operation of a distribution network. This study analyzed the effect of Distributed Generation (DG) on the reliability of distribution network in Port Harcourt metropolis. Five injection substations were used as case studies. Electrical Transient Analyser Programme (ETAP 16.0) was used to model the network using the data collected from the utility company. The reliability of the network was investigated with and without DG units. The reliability of the network improved when DG units were integrated into it at different locations. Multiple integration of DG into network near load points further increased the reliability of the system. The results showed that the utility company can better satisfy their customers with DG in the network and hence increase their revenues. The reliability indicators used for analysis in this study are System Average Interruption Frequency Index (SAIFI), Customer Average Interruption Duration Index (CAIDI), Customer Average Interruption Frequency Index (CAIFI) and Average Service Availability Index (ASAI)
Optimal Control of the Double Inverted Pendulum on a Cart: A Comparative Study of Explicit MPC and LQR
No full textThis paper proposes the use of explicit model predictive control (eMPC) method for the stabilising control of the nonlinear underactuated double inverted pendulum on a cart system. To access the effectiveness of the proposed method, a linear quadratic regulator (LQR) was used as a benchmark. The study showed that the proposed eMPC can provide significantly better performance than LQR under various conditions of the system. This superior performance is especially significant in terms of the system outputs peak values reduction. Nonetheless, it was pointed out that there is a need to consider other eMPC methods that lead to further reduction of the number of critical regions and more efficient exploration of the parameter space for the stabilising control of the double inverted pendulum system
Port Flow Simulation and In-cylinder Swirl Motion Characteristic Effects in Internal Combustion Engine Duty Cycle
No full textCombustion process in internal combustion engines involve significant temperature and pressure, carbon deposit, turbulence flame, swirling and tumbling flows which are considered necessary for operating these engines. This study examines the in-cylinder effects of swirling and tumbling motion along with the in-cylinder temperature during combustion process of air-fuel mixture. A detailed port flow analysis was carried out using ANSYS R-16 software and a valve lift of 8 mm. The velocity magnitude and mass flow rate were monitored using swirl motion simulated profiles and cut planes. Motion analysis was carried out to determine the angular velocity of the cycle using SOLIDWORKS 2017. The average angular velocity of the crankshaft was found to be 1315 rpm, with percentage deviation of less than 20%. It was also found that the area-weighted average velocity of charge was 11 m/s with corresponding mass flow rate measured as -0.055479 kg/s. The maximum flow rate was calculated at 8 mm as 0.005417 kg/s. The ICE swirl plane 1, 2 and 3 were characterized by different contours of velocity magnitude, indicating that the swirl intensity increased as the charge moved further down the cylinder while the charge volume of swirl increased along the cylinder length. For the ICE cut plane, the velocity increased as the swirl increased while the mass flow rate decreased as the fluid went further away from the poppet valve. Therefore, the intensity of swirl increased along the stroke length of the engine cylinder. In addition, increase in the swirl number led to uniform radial temperature distribution as well as reduction in the in-cylinder flame temperature which can mitigate against the formation of toxic pollutants