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No full textABSTRACT
The study aims to examine the firm-specific factors such as firm size, profitability
and asset tangibility in the capital structure decisions (leverage) on a sample of
twenty construction firms in Malaysia and Singapore from 2009 to 2018, with 200
observations. The sample firms are chosen based on convenience sampling technique
and the availability of the data. Prior studies documented inconclusive findings on
the determinants of capital structure and different industries tend to reveal different
patterns of relationship. In addition, the empirical evidence on comparative
analysis between construction firms in Malaysia and Singapore is lacking. Hence,
the objective of this study is to extend the prior work by investigating the impact
of the determinants on capital structure on the construction firms in Malaysia and
Singapore. The study uses panel data analysis to test the effectivity of trade-off,
pecking order and agency cost theories of capital structure. The empirical findings
reveal positive and significant association between firm size and capital structure
for Singapore firms. Meanwhile, profitability and asset tangibility correlate
negatively with capital structure. As for Malaysian firms, the three determinants
exhibit insignificant association with the capital structure. The study only examines
10 construction firms in Malaysia and 10 construction firms in Singapore, therefore,
the small sample size becomes the limitation of the study. Nevertheless, the findings
of this study may contribute to the body of knowledge on the importance of some
firm-specific determinants such as profitability, tangible assets, and firm size in
order to determine the optimal level of capital structure for firms in these countries
The self-care behaviour association with quality of life among Chinese ethnic with heart failure in Malaysia
No full textModelling the Successful Integration of Mobile Augmented Reality Technology (MART) Among Malaysian Pre-Service Teachers
No full textAnalisis Semantik Kognitif dalam Puisi Cinta Tanpa Tanda: Konsep Metafora dan Ikon dari Perspektif Teori Ruang Mental
No full textModified dynamic model for longitudinal motion of ground vehicles
No full textThe present study aims to provide a modified model for analysing the longitudinal dynamics of ground vehicles. Bearing in mind that an inevitable tire slip occurs under the transmission of driving torque to the drive wheels, the pure rolling assumption employed in many previous works is modified in this research. This paves the way through the development of a more realistic simulation framework with promising performance when used in vehicle and powertrain related topics. The modified equation of motion is an explicit function of tire slip ratio, and as a result, by rewriting the power balance equation, a dissipation term due to tire slip appears, which is consistent with the outcome of the recent contributions. Simulation results indicate a significant difference between the modified and simplified models in the case of a relatively high tractive force. Moreover, tire slip loss is obviously large in such a case, so that its neglect would lead to a noticeable inaccuracy in the response of the traditional model. An average of 35% improvement in the accuracy of prediction of tire consumed energy is observed in 0 to 100 km/h half-throttle acceleration manoeuvre using the modified model
Utilisation of chemical waste additives with low octane commercial gasoline fuel to enhance the performance of SI engines
No full textIn this study, fusel oil additive from the waste product has been used as an octane number enhancer to improve gasoline engine performance. The fusel additive was added at 10%, 20% and 30% ratios to prepare the investigated fuel samples (M10, M20 and M30, respectively, in addition to pure gasoline M0). Engine tests were conducted at constant half engine load and increasing speed from 1500 rpm to 4500 rpm at 1000 rpm increments. Response surface methodology has been used as a statistical technique to describe the relationship between the investigated input variables with their responses to achieve the optimum operating conditions. Engine cyclic variations were analysed using wavelet analysis of in-cylinder pressure based on indicated mean effective pressure (IMEP) calculated for 100 consecutive cycles. The results showed that the higher brake power was obtained with blended fuel M20 during the engine operating speeds. The maximum increase of brake power found to be 23.6% with M20 compared to gasoline at 1500 rpm, which accompanied by a 7.3% increase in brake specific fuel consumption. On the other hand, the highest increase in brake thermal efficiency is found to be related to the engine speed and fusel additive ratio. Wavelet analysis shows that the engine cyclic variations decrease as the fusel additive introduce with gasoline. Moreover, fusel additive has a pronounced effect on decreasing the cycle to cycle variations of the IMEP time series with the lowest overall engine cyclic variations for M30. Accordingly, 20% fusel additive (M20) can be considered as a valuable octane enhancer for better engine performance
