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Search Results: 1 - 10 of 3107 matches for " Nor Mazlina Abu Bakar "
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An Evaluation of Lecturers Perceptions Towards Research
Izah Mohd Tahir,Nor Mazlina Abu Bakar
The Social Sciences , 2013,
Abstract: Teaching and research are two main requirements in the job descriptions of university lecturers. Other requirements in the job descriptions include organizing seminars/conferences, presenting papers at national and international levels, publishing papers/articles in refereed journals, publishing books and other scholarly activities. Through research one could acquire knowledge and disseminate to students as well as peers, which finally contribute to building competitive advantage to the university concerned. The current study reports findings from a survey, which examined the perceptions of university lecturers towards research. The findings indicate that research is essential to professional development motivated by getting promotion and salary increment. They also, shed some light on the main barrier for not doing research among university lecturers-poor statistical and econometric skills. Implications and suggestions for future research are also, provided.
Business students’ beliefs in learning mathematics
Izah Mohd. Tahir,Nor Mazlina Abu Bakar
Jurnal Kemanusiaan , 2007,
Abstract: This study explores the students' beliefs in learning mathematics in a university mathematics class. Complete data were collected from three hundred and seventy six students in three higher learning institutions enrolled in the business mathematics subject. The reliability coefficient alpha was 0.80, indicating a high degree of internal consistency for group analyses. A maximum likelihood factor analysis with a varimax rotation yielded four factors: teacher’s role, value, competency and learning. The results indicated that business students appeared to hold positive beliefs in learning mathematics. In addition, teacher’s role was the most important factor, followed by value, learning and competency. The results also indicated that there were significant differences in means between students’ beliefs based on institutions and mathematics grade. However, our results showed no significant differences in means between beliefs based on gender, secondary education and students’ major. The findings of this study could assist the relevant authorities to develop strategic planning to enhance learning mathematics among Malay students. In addition, learning mathematics does not only build students’ ability to think analytically but also develop skills of reasoning and problem solving. These are some of the important elements in environmental management which are invaluable assets to the community.
Applying Multiple Linear Regression and Neural Network to Predict Bank Performance
Nor Mazlina Abu Bakar,Izah Mohd Tahir
International Business Research , 2009, DOI: 10.5539/ibr.v2n4p176
Abstract: Globalization and technological advancement has created a highly competitive market in the banking and finance industry. Performance of the industry depends heavily on the accuracy of the decisions made at managerial level. This study uses multiple linear regression technique and feed forward artificial neural network in predicting bank performance. The study aims to predict bank performance using multiple linear regression and neural network. The study then evaluates the performance of the two techniques with a goal to find a powerful tool in predicting the bank performance. Data of thirteen banks for the period 2001-2006 was used in the study. ROA was used as a measure of bank performance, and hence is a dependent variable for the multiple linear regressions. Seven variables including liquidity, credit risk, cost to income ratio, size, concentration ratio, inflation and GDP were used as independent variables. Under supervised learning, the dependent variable, ROA was used as the target output for the artificial neural network. Seven inputs corresponding to seven predictor variables were used for pattern recognition at the training phase. Experimental results from the multiple linear regression show that two variables: credit risk and cost to income ratio are significant in determining the bank performance. Two variables were found to explain about 60.9 percent of the total variation in the data with a mean square error (MSE) of 0.330. The artificial neural network was found to give optimal results by using thirteen hidden neurons. Testing results show that the seven inputs explain about 66.9 percent of the total variation in the data with a very low MSE of 0.00687. Performance of both methods is measured by mean square prediction error (MSPR) at the validation stage. The MSPR value for neural network is lower than the MPSR value for multiple linear regression (0.0061 against 0.6190). The study concludes that artificial neural network is the more powerful tool in predicting bank performance.
Influence of Demographic Factors on Students’ Beliefs in Learning Mathematics
Izah Mohd Tahir,Nor Mazlina Abu Bakar
International Education Studies , 2009, DOI: 10.5539/ies.v2n3p120
Abstract: Learning mathematics has been recognized by many as important. It does not only develop students’ ability to think in quantitative terms but can also enhance skills such as analytical and problem solving skills. However, to enable us to tell our students how important mathematics is we have to understand students’ beliefs in learning mathematics so as to find ways to improve students’ performance in mathematics. The aim of this study is to examine the relationship between business students’ beliefs in learning mathematics and demographic factors. Data were collected from three hundred and seventy six students in three higher learning institutions enrolled in business mathematics class. Descriptive statistics will be used to describe the sample and Pearson chi-square test will be used to test students’ beliefs and the relationship between students’ beliefs and demographic factors (gender, institutions, previous mathematics grade, secondary education and major). Our results suggest that students’ beliefs are positive and significant in learning mathematics. Using Pearson chi-square test, generally the results suggest that there are significant differences in means between students’ beliefs based on institutions and mathematics grade. In addition, we find that overall there are no significant differences in means between beliefs based on gender, secondary education and major.
Cost and Profit Efficiency of the Malaysian Commercial Banks: A Comparison between Domestic and Foreign Banks
Izah Mohd Tahir,Nor Mazlina Abu Bakar,Sudin Haron
International Journal of Economics and Finance , 2010, DOI: 10.5539/ijef.v2n1p186
Abstract: This study examines the relative efficiency levels of domestic and foreign commercial banks in Malaysia between 2000 and 2006, using accounting-based ratio, stochastic cost and profit frontier approach. Using accounting-based ratio, the results suggest that interest margin and operating cost are slightly higher for domestic banks than for foreign banks. Further, the results also suggest that profit ratios are slightly higher for foreign banks relative to domestic banks. Using the stochastic frontier approach, the results indicate that domestic banks are found to be more cost-efficient but less profit - efficient relative to foreign banks. Keywords: Efficiency, accounting-based ratios, stochastic cost and profit frontier approach, Malaysia
Evaluating Efficiency of Malaysian Banks Using Data Envelopment Analysis
Izah Mohd Tahir,Nor Mazlina Abu Bakar,Sudin - Haron
International Journal of Business and Management , 2009, DOI: 10.5539/ijbm.v4n8p96
Abstract: Data Envelopment Analysis (DEA) Approach is used to estimate the overall, pure technical and scale efficiencies for Malaysian commercial banks during the period 2000-2006. The results suggest that domestic banks were relatively more efficient than foreign banks. Our results also suggest that domestic banks’ inefficiency were attributed to pure technical inefficiency rather than scale inefficiency. In contrast, foreign banks inefficiency is attributed to scale inefficiency rather than pure technical inefficiency. The study further examines whether the domestic and foreign banks are drawn from the same environment by performing a series of parametric and non-parametric tests. The results from the parametric and non-parametric tests suggest that for the years 2000-2004, both domestic and foreign banks possessed the same technology whereas results for 2005 and 2006 suggest otherwise. This implies that banks in recent years have had access to different and more efficient technology.
Sanitation Practices among Food Handlers in a Military Food Service Institution, Malaysia  [PDF]
Hai Yen Lee, Wan Nadirah Wan Chik, Fatimah Abu Bakar, Nazamid Saari, Nor Ainy Mahyudin
Food and Nutrition Sciences (FNS) , 2012, DOI: 10.4236/fns.2012.311204
Abstract: This study was conducted over a period of two months to assess the food hygiene practices among food handlers in a military food service institution that have been trained with food safety practices and knowledge. Since limited data was published for the services rendered to governmental agencies such as the military, this study was conducted to determine the level of knowledge, attitude and motivation of food handlers under this institution that was responsible for the provision of food to the armed forces in Malaysia. Findings from this study offered an insight for food sanitation practices and influence of the authority towards food service institutions under the policy of voluntary HACCP practices.
An Optical Test Strip for the Detection of Benzoic Acid in Food
Hairul Hisham Hamzah,Nor Azah Yusof,Abu Bakar Salleh,Fatimah Abu Bakar
Sensors , 2011, DOI: 10.3390/s110807302
Abstract: Fabrication of a test strip for detection of benzoic acid was successfully implemented by immobilizing tyrosinase, phenol and 3-methyl-2-benzothiazolinone hydrazone (MBTH) onto filter paper using polystyrene as polymeric support. The sensing scheme was based on the decreasing intensity of the maroon colour of the test strip when introduced into benzoic acid solution. The test strip was characterized using optical fiber reflectance and has maximum reflectance at 375 nm. It has shown a highly reproducible measurement of benzoic acid with a calculated RSD of 0.47% (n = 10). The detection was optimized at pH 7. A linear response of the biosensor was obtained in 100 to 700 ppm of benzoic acid with a detection limit (LOD) of 73.6 ppm. At 1:1 ratio of benzoic acid to interfering substances, the main interfering substance is boric acid. The kinetic analyses show that, the inhibition of benzoic is competitive inhibitor and the inhibition constant (Ki) is 52.9 ppm. The activity of immobilized tyrosinase, phenol, and MBTH in the test strip was fairly sustained during 20 days when stored at 3 °C. The developed test strip was used for detection of benzoic acid in food samples and was observed to have comparable results to the HPLC method, hence the developed test strip can be used as an alternative to HPLC in detecting benzoic acid in food products.
A Comparative Study of Selected Trace Element Content in Malay and Chinese Traditional Herbal Medicine (THM) Using an Inductively Coupled Plasma-Mass Spectrometer (ICP-MS)
Fairuz Liyana Mohd Rasdi,Nor Kartini Abu Bakar,Sharifah Mohamad
International Journal of Molecular Sciences , 2013, DOI: 10.3390/ijms14023078
Abstract: A total of 60 products of traditional herbal medicine (THM) in various dosage forms of herbal preparation were analyzed to determine selected trace elements ( i.e., Zn, Mn, Cu, Cd, and Se) using ICP-MS. Thirty types of both Chinese and Malay THMs were chosen to represent each population. The closed vessel acid microwave digestion method, using CEM MARS 5, was employed for the extraction of the selected trace elements. The digestion method applied was validated by using certified reference material from the Trace Element in Spinach Leaves (SRM1570a). The recoveries of all elements were found to be in the range of 85.3%–98.9%. The results indicated that Zn, Mn, Cu, Cd and Se have their own trends of concentrations in all samples studied. The daily intake concentrations of the elements were in the following order: Mn > Zn > Cu > Se > Cd. Concentrations of all five elements were found to be dominant in Chinese THMs. The essentiality of the selected trace elements was also assessed, based on the recommended daily allowance (RDA), adequate intake (AI) and the United States Pharmacopeia (USP) for trace elements as reference. The concentrations of all elements studied were below the RDA, AI and USP values, which fall within the essential concentration range, except for cadmium.
Construct Validity Examination of Critical Thinking Dispositions for Undergraduate Students in University Putra Malaysia
Ibrahim Ghadi,Nor Hayati Alwi,Kamariah Abu Bakar,Othman Talib
Higher Education Studies , 2012, DOI: 10.5539/hes.v2n2p138
Abstract: This research aims to evaluate the psychology properties of the construct validity for the Critical Thinking Disposition (CTD) instrument. The CTD instrument consists of 39 Likert-type items measuring seven dispositions, namely analyticity, open-mind, truth-seeking, systematicity, self-confidence inquisitiveness and maturity. The study involves 433 undergraduate students in University Putra Malaysia. The findings showed that the CTD has satisfactory construct validity with seven factors extracted and confirmed by confirmatory factor analyses. Construct validity results are supported with the Cronbach’s alpha values which indicates high validity and reliability for the instrument to measure critical thinking dispositions.
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