Items where Author is "Abdul Aziz, Faieza"

Suliano, Salami Bahariah and Ahmad, Siti Azfanizam and As’arry, Azizan and Abdul Aziz, Faieza (2023) Conceptual design of a combined brake-accelerator pedal for limbs disabled driver using a hybrid approach. Pertanika Journal of Science and Technology, 31 (2). pp. 895-909. ISSN 0128-7680; ESSN: 2231-8526

Lai, Lai Win and Abdul Aziz, Faieza and Hairuddin, Abdul Aziz and Abdullah, Lili Nurliyana and Hwa, Jen Yap and Saito, Hideo and Seyajah, Norhisham (2022) Effectiveness on training method using virtual reality and augmented reality applications in automobile engine assembly. ASEAN Engineering Journal, 12 (1). 01-May. ISSN 2586–9159

Suliano, Salami Bahariah and Ahmad, Siti Azfanizam and As’arry, Azizan and Abdul Aziz, Faieza (2022) An ergonomics study and Rapid Upper Limb Assessments (RULA) for a car interior to support limb disabled drivers. Journal of Management Science & Engineering Research, 5 (2). 17 - 30. ISSN 2630-4953

Alazemi, Mohammad F. F. S. and Ariffin, Mohd Khairol Anuar and Abdullah, Mohd Na'im and Supeni, Eris Elianddy and Abdul Aziz, Faieza (2022) Evaluation of the effects of soda-lime-silica glass with rice husk ash as an additive on the hardness behavior. Engineering Solid Mechanics, 10 (2). 113 - 120. ISSN 2291-8744; ESSN: 2291-8752

Sulaiman, Shamsuddin and Aldeehani, Ahmaad Kadmouse and Alhajji, Mohammad Sh I A M I and Abdul Aziz, Faieza (2021) Development of integrated supply chain system in manufacturing industry. Journal of Computational Methods in Sciences and Engineering, 21 (3). 599 - 611. ISSN 1472-7978

Abdul Rani, Nadia and Abdul Aziz, Faieza and Hemdi, Abdul Rahman and Kanagaraj, Mohanadhas (2021) Effects of machining method and technique on galvanized steel material properties. Journal of Computational Methods in Sciences and Engineering, 21 (3). 545 - 553. ISSN 1472-7978

Abdul Aziz, Faieza and S.M.A Alsaeed, Adel and Sulaiman, Shamsuddin and Mohd Ariffin, Mohd Khairol Anuar and Al-Hakim, Muhammad Faris (2020) Mixed reality improves education and training in assembly processes. Journal of Engineering and Technological Sciences, 52 (4). 598 - 607. ISSN 2337-5779; ESSN: 2338-5502

Abdul Rani, Nadia and Abdul Aziz, Faieza and Hairuddin, Abdul Aziz and Ahmad, Siti Azfanizam and Hemdi, Abdul Rahman (2020) Augmented reality: capabilities and challenges in machining industry aligned with industry 4.0. Advances in Materials and Processing Technologies. pp. 1-9. ISSN 2374-068X; ESSN: 2374-0698

Win, Lai Lai and Abdul Aziz, Faieza and Hairuddin, Abdul Aziz and Abdullah, Lili Nurliyana and Yap, Hwa Jen and Saito, Hideo and Seyajah, Norhisham (2020) Immersive virtual reality application development using high tech computer vive and high-end laptop. Nanoscience and Nanotechnology Letters, 12 (5). pp. 628-632. ISSN 1941-4900; ESSN: 1941-4919

Aolin, Chen and A. A., Al Mayas and Abdul Aziz, Faieza and Yidris, Noorfaizal and Ahmad, Kamarul Arifin (2020) Investigation of solid propellant rocket motor nozzle via CFD simulation. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 68 (2). pp. 1-8. ISSN 2289-7879

Al Asemi, Hammad and Aftab, Syed Mohammed Aminuddin and Zahari, Rizal and Abdul Aziz, Faieza and Ahmad, Kamarul Arifin (2019) Application of computational fluid dynamics in piping distribution system and special focus on the Arabian peninsula: a review. International Review of Mechanical Engineering, 13 (1). ISSN 1970-8734

Dalef, Huda Hatam and Abdul Aziz, Faieza and Wan Hasan, Wan Zuha and Mohd Ariffin, Mohd Khairol Anuar (2018) Controlling of robot hand by using microcontroller with visual basic. Journal of Computational and Theoretical Nanoscience, 15 (2). 648 - 655. ISSN 1546-1955; ESSN: 1546-1963

Mohammed Ali Al-Serri, Sari and Abdul Aziz, Faieza and Zulkifli, Norzima (2018) Development of smart house model to control lighting, temperature, and gas leakage detection system. International Journal of Mechanical & Production Engineering, 6 (2). 69 - 72. ISSN 2320-2092; ESSN: 2321-2071

Dalef, Huda Hatem and Abdul Aziz, Faieza and Wan Hasan, Wan Zuha and Mohd Ariffin, Mohd Khairol Anuar (2018) Development of wireless controlling and monitoring system for robotic hand using Zigbee protocol. Journal of Computational and Theoretical Nanoscience, 15 (2). 656 - 662. ISSN 1546-1955; ESSN: 1546-1963

Askarizadeh, Mehdi and Abdul Aziz, Faieza (2018) Planning and scheduling operating rooms with mix integer programming and meta-heuristic method. Journal of Computational and Theoretical Nanoscience, 15 (3). 961 - 965. ISSN 1546-1955; ESSN: 1546-1963

Mahmod Wahab, Rohidatun and Abdul Aziz, Faieza and Mohd Yusuff, Rosnah and Saad, Nor Hayati (2017) Develop a Virtual and Augmented Reality system to enhance learning and training assembly. Journal of Computational and Theoretical Nanoscience, 14 (11). 5617 - 5620. ISSN 1546-1955; ESSN: 1546-1963

Alshukri, Adnan A. and Abdul Aziz, Faieza and Salit, Mohd Sapuan and Zageer, Dheaa S. and Abdul Aziz, Nuraini and Al-Maamori, Mohammed H. (2017) Mechanical and curing properties of crumb rubber irradiated in polar media filled the tire tread blend. Journal of Computational and Theoretical Nanoscience, 14 (11). 5253 - 5260. ISSN 1546-1955; ESSN: 1546-1963

Hatam, Huda and Abdul Aziz, Faieza and Wan Hasan, Wan Zuha and Mohd Ariffin, Mohd Khairol Anuar (2017) Real time wireless monitoring and controlling of 3-D single point incremental tool. Journal of Computational and Theoretical Nanoscience, 14 (9). 4586 - 4596. ISSN 1546-1955; ESSN: 1546-1963

H. Dalef, Huda and Abdul Aziz, Faieza (2017) Augmented reality application to monitor wireless data process in manufacturing operation. Journal of Computational and Theoretical Nanoscience, 14 (9). 4143 - 4157. ISSN 1546-1955; ESSN: 1546-1963

Muayad Khaleel, Zinah and Mohd. Yusuff, Rosnah and Abdul Aziz, Faieza and A. Fakhri, Muhammad (2017) Computer-related eye pain: a case study from Malaysian public (UPM) for the effect of lighting on eye strain among university students. Science International, 29 (1). 93 - 98. ISSN 1013-5316

Askarizadeh, Mehdi and Abdul Aziz, Faieza and Mohd Ariffin, Mohd Khairol Anuar and Ahmad, Siti Azfanizam (2017) Operating rooms planning and scheduling with mix integer programming and meta-heuristic method. International Journal of Mechanical Engineering and Applications, 5 (4-1). 14 - 19. ISSN 2330-023X; ESSN: 2330-0248

Ehsan, Abang Annuar and Mohd Arip, Mohd Ridzuan and Sohaimi, Mohd Quyyum and Ghazi, Ibrahim and Abdul Aziz, Faieza (2016) Optical encryption device for software protection. Journal of Computer Science & Computational Mathematics, 6 (3). pp. 49-52. ISSN 2231-8879

Algburi, Saleh M. and Abdul Aziz, Faieza and Baharudin, B.T. Hang Tuah (2016) Review of green building index in Malaysia; existing work and challenges. International Journal of Applied Engineering Research, 11 (5). pp. 3160-3167. ISSN 0973-4562; ESSN: 0973-9769

Abdul Aziz, Faieza and S., Shahul (2015) The effect of crashworthiness parameters for vehicle body. International Journal of Advance Research In Science And Engineering, 4 (1). pp. 1-6. ISSN 2319-8346; ESSN: 2319 - 8354

Abdul Aziz, Faieza and Nawawi, A. M. and Hamzeh, S. R. and Rohidatun, M. W. and Ahmad, Siti Azfanizam (2015) Responsiveness of reconfigurable manufacturing system (RMS) scheduling decision to system performance. Australian Journal of Basic and Applied Sciences, 9 (30). pp. 74-78. ISSN 1991-8178; ESSN: 2309-8414

Ahmad, Siti Azfanizam and Pham, Duc Truong and Abdul Aziz, Faieza (2014) Combination of adaptive enlargement and reduction in the search neighbourhood in the bees algorithm. Applied Mechanics and Materials, 564. pp. 614-618. ISSN 1660-9336; ESSN: 1662-7482

Abdul Aziz, Faieza and Rashid, Sahrol Nizam and Zulkifli, Norzima (2014) Communication system improvement for air traffic service to provide a continuous surveillance over the oceanic area. Applied Mechanics and Materials, 564. pp. 604-607. ISSN 1660-9336; ESSN: 1662-7482

Kamarbhari, Syakirah and Abdul Aziz, Faieza and Mohd Yusuff, Rosnah (2014) Development of an ergonomic infant seat with restraint system for use inan aircraft. Applied Mechanics and Materials, 564. pp. 99-104. ISSN 1660-9336; ESSN: 1662-7482

Nadarajah, Jayasalen and Abdul Aziz, Faieza and Baharudin, B. T. Hang Tuah and Mohd Radzi, Mohd Amran (2014) Improved maintenance for energy optimization in the calcium compound processing industry. Applied Mechanics and Materials, 564. pp. 747-751. ISSN 1660-9336; ESSN: 1662-7482

P. N., Preeta and Abdul Aziz, Faieza and Zulkifli, Norzima and Mohd Yusuff, Rosnah (2014) Improvement of a boiler feedwater system using six sigma analysis. Advanced Materials Research, 912-914. pp. 1644-1647. ISSN 1022-6680; ESSN: 1662-8985

Lilehkoohi, A. H. and Abdul Aziz, Faieza and Sahari, Barkawi and Abdul Aziz, Nuraini and Halali, Mohammad (2014) Investigation of thickness influences on energy absorption for side doors and B pillar in Euro NCAP Pole Side Impact Test. Applied Mechanics and Materials, 663. pp. 585-589. ISSN 1660-9336; ESSN: 1662-7482

Kasman, Zeti @ Noorizeti and Abdul Aziz, Faieza (2014) Skills improvement of instructor to provide technical consultation with industries. Applied Mechanics and Materials, 564. pp. 711-716. ISSN 1660-9336; ESSN: 1662-7482

Abdul Aziz, Faieza and Jamali, Negar (2013) Factors inflencing the level of adoption in electronic commerce among SMEs. International Journal of Information Technology & Computer Science, 8 (2). pp. 105-110. ISSN 2091-1610

Abdul Aziz, Faieza and Solomon, Orakwe Nwabueze (2013) A review of the negotiation protocol for agent based manufacturing system control. International Journal of Information Technology and Computer Science, 8 (1). pp. 35-39. ISSN 2091-1610

Abdul Aziz, Faieza and Sahari, Barkawi and Abdul Aziz, Nuraini and Lilehkoohi, A. H. and Halali, M. (2013) Crashworthiness Determination for Front and Rear Doors and B Pillar Subjected to Side Impact Crash by a Mobile Deformable Barrier. Journal Advance Science Letters, 19 (2). pp. 392-395. ISSN 1936-6612

Abdul Aziz, Faieza and Sahari, Barkawi and Abdul Aziz, Nuraini and Lilehkoohi, A. H. and Halali, M. (2013) Effect of Material and Thickness of Side Doors And B Pillar on Crashworthiness in Euro NCAP Side Impact Crash Test. Journal Advance Science Letters, 19 (2). pp. 359-362. ISSN 1936-6612

Abdul Aziz, Faieza and Sahari, Barkawi and Abdul Aziz, Nuraini and Halali, M. (2013) Effect of Material on Crashworthiness for Side Doors and B Pillar Subjected to Euro NCAP Side Impact Crash Test. Journal Advance Science Letters, 19 (2). pp. 359-362. ISSN 1936-6612

Muthu, Nalienaa and Abdul Aziz, Faieza and Mohd Yusuff, Rosnah (2013) Minimization of spent acid waste from galvanizing plant in Malaysia. Global Journal of Researches in Engineering-E: Civil and Structural Engineering, 13 (6). pp. 15-24. ISSN 0975-5861; ESSN: 2249-4596

Jalaluddin, Mai Nursherida and Abdul Aziz, Nuraini and Sahari, Barkawi and Ali, Aidy and Abdul Aziz, Faieza and Tuan Ismail, Tuan Hafandi and Azizi, Azim and Mohd Salleh, Salwani and M. S., Nabilah and S. S., Aini and M., Shahril and M. H., Norhidayah (2012) Determination of leg injury criteria subjected to frontal impacts. Applied Mechanics and Materials, 165. pp. 265-269. ISSN 1660-9336; ESSN: 1662-7482

Ibrahim, Mohd Shukri and Salit, Mohd Sapuan and Abdul Aziz, Faieza (2012) Mechanical and thermal properties of composites from unsaturated polyester filled with oil palm ash. Journal of Mechanical Engineering and Sciences, 2. pp. 133-147. ISSN 2289-4659; ESSN: 2231-8380

Mousavi, Maryam and Abdul Aziz, Faieza and Ismail, Napsiah (2012) Virtual reality adoption capability in Malaysian automotive manufacturing industry. Scientific Research and Essays, 7 (2). art. no. D227C6C27330. pp. 158-164. ISSN 1992-2248

Safarzadeh, Daryoush and Sulaiman, Shamsuddin and Abdul Aziz, Faieza and Ahmad, Desa and Majzoobi, Gholam Hossein (2011) Steer-by-switch system design for vehicles. Scientific Research and Essays, 6 (31). art. no. 0BBCC1B31282. pp. 6412-6427. ISSN 1992-2248

Shareghi, Masood and Abdul Aziz, Faieza (2011) Service oriented architecture and advancement of maintenance management information systems: a review. Scientific Research and Essays, 6 (15). art. no. F311C1F22973. pp. 3182-3188. ISSN 1992-2248

Niestanak, S. Abedi and Abdul Aziz, Faieza and Sulaiman, Shamsuddin and Mohd Yusuff, Rosnah (2011) Product structure initialization, the bottleneck of ERP implementation in customer driven environments: a case study. Pertanika Journal of Science & Technology, 19 (1). pp. 77-92. ISSN 0128-7680; ESSN: 2231-8526

Sulaiman, Shamsuddin and Ahmad, Desa and Abdul Aziz, Faieza and Safarzadeh, Daryoush and Majzoobi, Gholam Hossein (2011) An Approach to Determine Effect of Crane Hook on Payload Sway. International Journal of Mechanics and Applications, 1 (1). pp. 30-38. ISSN 2165-9281

Ibrahim, Mohd Shukri and Abdul Aziz, Faieza and Salit, Mohd Sapuan and Mohd Tahir, Suraya (2011) Effect of filler loading and coupling agent on tensile and impact properties of polypropylene with oil palm ash composites. Key Engineering Materials, 471-472. pp. 1130-1135. ISSN 1013-9826; ESSN: 1662-9795

Seyajah, Norhisham and Abdul Aziz, Faieza and Ismail, Napsiah and Salit, Mohd Sapuan and Ibrahim, Mohd Shukri (2011) Flexural mechanical characteristic of sawdust and chipwood filled epoxy composites. Key Engineering Materials, 471-472. pp. 1064-1069. ISSN 1013-9826; ESSN: 1662-9795

Fatchurrohman, Nanang and Sulaiman, Shamsuddin and Mohd Ariffin, Mohd Khairol Anuar and Abdul Aziz, Faieza and Baharudin, B. T. Hang Tuah (2011) Metal matrix composites: solidification parameters of aluminium-11.8% silicon alloy reinforced with titanium carbide particulates. Key Engineering Materials, 471-472. pp. 1081-1084. ISSN 1013-9826; ESSN: 1662-9795

Seyajah, Norhisham and Abdul Aziz, Faieza and Ismail, Napsiah and Salit, Mohd Sapuan and Ibrahim, Mohd Shukri (2011) Tensile properties and micromorphologies of sawdust and chipwood filled epoxy composites. Key Engineering Materials, 471-472. pp. 1070-1074. ISSN 1013-9826; ESSN: 1662-9795

Sulaiman, Shamsuddin and Ahmad, Desa and Abdul Aziz, Faieza and Safarzadeh, Daryoush and Majzoobi, Gholam Hossein (2011) The design process of a self-propelled floor crane. Journal of Terramechanics, 48. pp. 157-168. ISSN 0022-4898

Baharudin, B. T. Hang Tuah and Sulaiman, Shamsuddin and Mohd Arrifin, Mohd Khairol Anuar and Abdul Aziz, Faieza and Salit, Mohd Sapuan (2010) Coating performance in high speed micro machining of H13 tool steel. Advanced Materials Research, 83-86. pp. 985-992. ISSN 1022-6680; ESSN: 1662-8985

Rahman, Muhd Ambri and Abdul Aziz, Faieza (2010) Electrostatic discharge (ESD) improvement to reduce customer complaint. Scientific Research and Essays, 5 (19). art. no. C44174C17115. pp. 3003-3008. ISSN 1992-2248

Rimy, M.M. and Abdul Aziz, Faieza (2010) Simulation of car bumper material using finite element analysis. Journal of Software Engineering, 4 (3). pp. 257-264. ISSN 1819-4311; ESSN: 2152-0941

Abdol Rahman, Mohd Nasrull and Abdul Aziz, Faieza and Mohd Yusuff, Rosnah (2010) Survey of body part symptoms among workers in a car tyre service centre. Journal of Human Ergology, 39 (1). pp. 53-56. ISSN 0300-8134; ESSN: 1884-3964

Abdul Aziz, Faieza and Mousavi, Maryam (2009) A Review of haptic feedback in virtual reality for manufacturing industry. Journal of Mechanical Engineering, 40 (1). pp. 68-71. ISSN 0379-4318

Abdul Aziz, Faieza and Salit, Mohd Sapuan and Mohd Ariffin, Mohd Khairol Anuar and Baharudin, B. T. Hang Tuah and Supeni, Eris Elianddy (2009) Design and fabrication of a student competition based racing car. Scientific Research and Essays, 4 (5). art. no. 5A7998D16219. pp. 361-366. ISSN 1992-2248

Salit, Mohd Sapuan and Ham, K. W. and Ng, K. M. and Woo, C. K. and Mohd Ariffin, Mohd Khairol Anuar and Baharudin, B. T. Hang Tuah and Abdul Aziz, Faieza and Supeni, Eris Elianddy and Abdul Jalil, Nawal Aswan (2009) Design of composite racing car body for student based competition. Scientific Research and Essays, 4 (11). art. no. 0B4FFB118730. pp. 1151-1162. ISSN 1992-2248

Abdul Aziz, Faieza and Pham, Duc Truong and Sulaiman, Shamsuddin and Ismail, Napsiah and Mohd Ariffin, Mohd Khairol Anuar and Baharudin, B. T. Hang Tuah (2008) Visual feedback and pseudo–haptic feedback improve manual lifting performance. Jurnal Teknologi, 49 (D). pp. 157-171. ISSN 0127–9696; ESSN; 2180–3722

Jolgaf, Mohamed A. Abdulmawlla and Sulaiman, Shamsuddin and Mohd Ariffin, Mohd Khairol Anuar and Abdul Aziz, Faieza (2008) Billet shape optimization for minimum forging load. European Journal of Scientific Research, 24 (3). pp. 420-427. ISSN 1450-216X

Jolgaf, Mohamed A. Abdulmawlla and Sulaiman, Shamsuddin and Mohd Ariffin, Mohd Khairol Anuar and Abdul Aziz, Faieza (2008) Closed die forging geometrical parameters optimization for Al-MMC. American Journal of Engineering and Applied Sciences, 1 (1). pp. 1-6. ISSN 1941-7020; ESSN: 1941-7039

Kiani, Golnar and Ibrahim, Rahinah and Abdan, Khalina and Abdul Aziz, Farah and Abdul Aziz, Faieza (2016) Simulated selective laser sintering of KCRP for students' creativity. In: STEdex 15/16: Sustainable Tropical Environmental Design Exhibition. Universiti Putra Malaysia Press, Serdang, Selangor, pp. 134-135.

Abdul Aziz, Faieza and Ahmad, Izham Hazizi and Zulkifli, Norzima and Mohd. Yusuff, Rosnah (2012) Particle reduction at metal deposition process in wafer fabrication. In: Manufacturing System. InTech, Rijeka, Croatia, pp. 1-26. ISBN 9789535105305

Abdul Aziz, Faieza and Tolouei, Saba (2012) Small block of supplier shares improve trust performance in supply chain relationship. In: Pathways to Supply Chain Excellence. InTech, Rijeka, Croatia, pp. 81-90. ISBN 9789535103677

Zulkifli, Norzima and Abdul Aziz, Faieza and Sivalingam, Sangeethavani (2015) Development of supplier quality performances in a semiconductor company for ISTMET2015. In: 2015 International Symposium on Technology Management and Emerging Technologies (ISTMET 2015), 25-27 Aug. 2015, Langkawi, Kedah, Malaysia. (pp. 325-329).

Ehsan, Abang Annuar and Mohd Arip, Mohd Ridzuan and Sohaimi, Muhammad Quyyum and Ghazi, Ibrahim and Abdul Aziz, Faieza (2015) Optical-based hardware encryption device for software protection. In: 4th International Conference on Computer Science and Computational Mathematics (ICCSCM 2015), 7-8 May 2015, Langkawi, Malaysia. (pp. 660-663).

Saadon, Zaid Kh. and Salim, Ghassan Maan and Omotoso, O. A. and Abdul Aziz, Faieza (2015) A review of robotics application in manufacturing industry. In: 4th International Conference on Computer Science and Computational Mathematics (ICCSCM 2015), 7-8 May 2015, Langkawi, Malaysia. (pp. 697-701).

Sahol Hamid, Nur Suraya and Abdul Aziz, Faieza and Azizi, Amir (2014) Virtual reality applications in manufacturing system. In: Science and Information Conference 2014, 27-29 Aug. 2014, London, United Kingdom. (pp. 1034-1037).

Abd Fatah, Abdul Yasser and Mohd Yusuff, Rosnah and Abdul Aziz, Faieza and Zulkifli, Norzima (2011) Simulation of "time-based" versus "sensor-based" traffic light system. In: 2011 IEEE 3rd International Conference on Communication Software and Networks (ICCSN 2011), 27-29 May 2011, Xi'an, China. (pp. 789-792).

Abdol Rahman, Mohd Nasrull and Abdul Aziz, Faieza and Mohd Yusuff, Rosnah (2009) Investigation of ergonomic risk factors in a car tyre service centre. In: National Symposium on Advancements in Ergonomics and Safety (ERGOSYM2009), 1-2 Dec. 2009, Perlis, Malaysia. (pp. 137-141).

Mousavi, Maryam and Abdul Aziz, Faieza (2008) State of the art of haptic feedback in virtual reality in manufacturing. In: 3rd International Symposium on Information Technology (ITSim'08), 26-28 Aug. 2008, Kuala Lumpur, Malaysia. .

Lai, Jian Ming and Abdul Aziz, Faieza and Sahari, Barkawi (2008) A study on real-time auditory feedback technique in manipulation task. In: 3rd International Symposium on Information Technology (ITSim'08), 26-28 Aug. 2008, Kuala Lumpur, Malaysia. .

Abdul Aziz, Faieza and Nicholas, Ieuan A. (2006) Visual feedback information for virtual lifting tasks. In: 2nd IET International Conference on Intelligent Environments (IE 06), 5-6 July 2006, Athens, Greece. (pp. 189-196).

Mousavi, Maryam and Abdul Aziz, Faieza and Ismail, Napsiah Investigation of 3D modelling and virtual reality systems in Malaysian automotive industry. In: International Conference on Frontiers of Mechanical Engineering Materials and Energy, 20-21 Dec. 2012, Beijing, China. .

Barkawi Sahari (2012) A lightweight rear bumper with crash worthy compartment. PI2012700830.

Shamsuddin Sulaiman (2012) A self-propelled hydraulic floor crane. PI2012001330.

Abdul Aziz, Faieza (2002) Experimental Leakage Analysis for Push Fit Elastomeric Steel Pipe Spigot and Socket Joint. Masters thesis, Universiti Putra Malaysia.