Zol Bahri Razali
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Preferred name
Zol Bahri Razali
Official Name
Zol Bahri, Razali
Alternative Name
Razali, Zol Bahri
Razali, Z. B.
Main Affiliation
Scopus Author ID
55050201000
Researcher ID
AAD-8927-2019

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  • Publication
    Optimum identification method of sorting Green Household waste
    ( 2016-10-07)
    Mohd Hisam Daud
    ;
    Zol Bahri Razali
    This project is related to design of sorting facility for reducing, reusing, recycling green waste material, and in particular to invent an automatic system to distinguish household waste in order to separate them from the main waste stream. The project focuses on thorough analysis of the properties of green household waste. The method of identification is using capacitive sensor where the characteristic data taken on three different sensor drive frequency. Three types of material have been chosen as a medium of this research, to be separated using the selected method. Based on capacitance characteristics and its ability to penetrate green object, optimum identification method is expected to be recognized in this project. The output capacitance sensor is in analogue value. The results demonstrate that the information from the sensor is enough to recognize the materials that have been selected.
  • Publication
    Reka bentuk sistem Elektro-Pneumatik pendekatan perisian simulasi berasaskan animasi
    ( 2004)
    Zol Bahri Razali
    Penyelidikan ini bertujuan menyelesaikan masalah pembelajaran subjek Reka bentuk Sistem Elektro-Pneumatik dengan menggunakan pendekatan Perisian Simulasi Berasaskan Animasi (ABSC). Masalah utama subjek ini ialah kesukaran pelajar memahami teori pergerakan komponenkomponen dalaman dalam Sistem Elektro-Pneumatik. lni kerana ketiadaan a/at bantu mengajar yang dapat menunjukkan pergerakan dalaman tersebut. Dalam penyelidikan, perisian simulasi telah dibangunkan secara merujuk segala teori-teori pembelajaran. Perisian simulasi yang dibangunkan telah mengeksploitasi e/emen animasi dan multimedia interaktif telah memaparkan dengan jelas segala pergerakan komponen~komponen tersebut, malah ciri interaktif perisian membolehkan pelajar berinteraksi dengan berkesan. Pencapaian pelajar secara ujian pra dan pasca telah dibandingkan bagi kaedah pembelajaran konvensional dengan kaedah ABSC. Keputusan daripada Ana/isis Varian (ANOVA) melalui Ujian-t menunjukkan terdapat perbezaan yang nyata dalam peningkatan skor setelah pelajar menggunakan perisian. Sebagai kesimpulan, penggunaan ABSC dapat membantu pelajar memahami konsep yang betul bagi Reka bentuk Sistem Elektro~Pneumatik serta menguasai Pembe/ajaran Berasaskan Masa/ah (PBL), seterusnya memperoleh pencapaian akademik yang lebih baik.
  • Publication
    The design of Mechatronics Manipulator for surgical purposes: approach and challenges
    ( 2006)
    Zol Bahri Razali
    ;
    Zahereel Ishwar Abdul Khalib
    This paper discusses the preliminary study of improving the development of mechatronic manipulator for surgical aided system, i.e. in MIS procedures. Realizing the importance of robotic and computer technology for surgical field in Malaysia, a studyof the application of mechatronic in medical has been set foward. The intended outcon of the study is to develop a surgical assisted system that could increase the quality of surgical service performance. Therefore, the aim to this study is to investigate and develop a kinematics model with all the neccessary details to be used for mechanism analysis and preliminary control system design. The objective is to detemine the optical geometric configuration for the develop model. This information will be used for the detailed mechanical design and manufacture of the physical device. The final
  • Publication
    Self-assessing psychomotor skills using thinking-aloud technique via smartphone
    ( 2022)
    Nor Syamina Sharifful Mizam
    ;
    Zol Bahri Razali
    ;
    Mohamed Mydin Hj M.Abdul Kader
    This research aims to design and develop an automated device for self-assessing psychomotor skills without an instructor’s observation. The lab assessment usually needs an instructor to observe, measure, and analyze the student's skills. It consumed much time to monitor each student. The problem of assessing psychomotor skills in the laboratory can be solved using the latest technology. Thus, the design of an Automated Psychomotor Testing Kit will be used to measure student psychomotor skills via a smartphone. The result can be transmitted to the instructor's smartphone via the Blynk application using the Arduino Mega and Bluetooth module. For this research, 17 students of Robotic and Automation Technology (Treatment Group) and 19 volunteered students from other engineering technology programs (Control Group) participated. The detailed methodology is described in this paper. The results show that there is a significant difference in mean scores between the treatment and control groups. Thus, the researcher can conclude that changes in students' Psychomotor Skills (P.S.) resulting from laboratory classes are statistically significant and be measured.
  • Publication
    Renewable Energy Driven Exhaust Fan for Use in Laboratory via IOT
    ( 2021-01-01)
    Mohamed Mydin Hj M.Abdul Kader
    ;
    Wan Azani Wan Mustafa
    ;
    Zol Bahri Razali
    ;
    Syahrul Affandi Saidi
    ;
    Akbar M.F.
    ;
    Ahmad Anas Nagoor Gunny
    ;
    Osman M.K.
    ;
    Setumin S.
    ;
    Idris M.
    ;
    Mahendran Gunaseakaran
    ;
    Nor Syamina Sharifful Mizam
    This paper discussed on the hardware product of renewable energy driven exhaust fan for use in laboratory via IOT. Ventilation is generally deployed in buildings for maintaining user's safety and health. This renewable energy driven exhaust fan is the most considered system in improving the energy saving while sustaining user's safety and health. If we can renew and reuse the energy we waste, it would help in some way to the problem of scarcity of energy, which is major threat of present world. Initial capital cost of solar systems is still quite high when it comes to generate power for domestic. By using the concept of wind turbines wind-generated electricity can be used for battery charging and for connection with the power grid. Hence this research proposes a prototype of Renewable Energy Driven Exhaust Fan for use in laboratory via IOT. This research presents a prototype of regenerating power by an exhaust fan. The generated power can be either used directly or can be stored in a battery. This exhaust fan also can be controlled and monitored via IOT. The objectives of this research are, to design and develop an exhaust fan that can be driven by renewable energy, to design and develop an exhaust fan that can be controlled by IoT and to collect data and analyze the power consumptions and power saving. Methods used in this research is to use power from battery to operate the Fan 1. Than this kinetic energy produced by Fan 1 is used to drive Fan 2 and Fan 3 which are now actually a pair of generators with the help of charging circuit to directly recharge the battery which at first used to power up Fan 1. Analysis is then carried out to evaluate the theory, which actually agreed to the initial theory as presented
  • Publication
    Transformation of Thinking-Aloud in assessing hands-on psychomotor: A pilot study
    ( 2021-07-21)
    Zol Bahri Razali
    ;
    Nor Syamina Sharifful Mizam
    ;
    Mohd Hisam Daud
    ;
    Mohamed Mydin Hj M.Abdul Kader
    Evaluation of laboratory experiences of engineering and engineering technology students has led to an increasing in the attention being paid to the development of students' psychomotor skills. One of the reasons that psychomotor seems to be less important in the past is because of the lack of suitable measuring tools despite it is important in the engineering and engineering technology course. Furthermore, a current assessment which is using report and test to evaluate the experience of student practice in the laboratory only help in assessing students' knowledge in cognitive skill. Thus, a new study method is needed to focus on evaluating engineering technology students in terms of their understanding of the component called 'hands-on practical experience' during their practical skill classes or experiment. The existing technique for evaluating psychomotor abilities that have emerged from attempts to improve selection in recruitment processes may provide a potentially useful tool for such a purpose. The point of this study is to create a new approach to test a change in practical experience to assess unintentional learning related to classic psychomotor skills in engineering technology laboratory classes. The methodology used to build up the instrument is portrayed and the empirical data collected to support its validity is presented. Thus, this research aims to find a way to measure the practical skill involve in a psychomotor change in an engineering laboratory class.
  • Publication
    Electronic Nose Testing for Confined Space Application Utilizes Principal Component Analysis and Support Vector Machine
    ( 2020-12-18)
    Bakar M.A.A.
    ;
    Abdullah A.H.
    ;
    Mustafa W.A.
    ;
    Zol Bahri Razali
    ;
    Saidi S.A.
    ;
    Kader M.M.M.A.
    ;
    Aman M.N.S.B.S.
    A confined space has a limited space for entry and exit but it is large enough for workers to enter and perform work inside. It is not designed for continuous occupancy because it can contribute atmospheric hazards accidents that threaten the worker safety and industry progress. In this work, we reported the testing an instrument to assist workers for atmosphere testing during pre-entry. An electronic nose (e-nose) using specific sensor arrays is the integration between hardware and software that able to sense different concentrations of gases in an air sample using pattern recognition techniques. The instrument utilizes multivariate statistical analysis which is Principal Component Analysis (PCA) for discriminate the different concentrations of gases and the Support Vector Machine (SVM) to classify the acquired data from the air sample. The instrument was successfully tested using diesel, gasoline, petrol and thinner. The results show that the instrument able to discriminate an air sample using PCA with total variation for 99.94%, while the classifier success rate for SVM indicates at 98.21% for train performance and 95.83% for test performance. This will contribute significantly to acquiring a new and alternative method of using the instrument for monitoring the atmospheric hazards in confined space to ensure the safety of workers during work progress in a confined space.
  • Publication
    Develop Portable Blood Analyzer Based on Temperature and Quantity Level
    ( 2020-12-18)
    Farhan Sukemi M.A.
    ;
    Mustafa W.A.
    ;
    Aihsan M.Z.
    ;
    Zol Bahri Razali
    ;
    Akhmal S.
    ;
    Saidi S.A.
    This technical paper presents a developing portable blood analyzer for monitoring of human blood sample. Perseverance of blood sample in hospitals is important in order to obtain a great quality of blood and therefore it able to determining the human type of disease. This is a life-threatening early step in most medical applications fields such as diagnosis, treatment and medical research. The proposed system consists of three main parts. In the first part, the use of convenient and handy device to deal with the problem of incorrect temperature value and inadequate quantity of blood sample. Most of previous human hospitality services show a fail to handle and properly in time to take human blood sample for diagnosis in a schedule time frame such as not punctual in taking blood sample from a patient in three different times in one day. The consequences is that these blood sample are not in perfect quality for a correct estimation of the human disease towards a pathology unit. The proposed method is a device that uses infrared temperature system and non-contact blood sample quantity detection. In the second part is by combining those two approaches to single programmable electronic modules that are used to minimize the size of the portable device in the resulting techniques to improve the functionality. The third part is accomplished by using a modern technique to produce an interface to provide the value of human blood sample and shows it on display for monitoring purposes. The programmable coding has been test in several different types of sensors and physical part. The experimental results show that this method able to integrate both requirement of human blood sample perseverance with a contactless method towards a blood tube, providing the output value of quality characteristic in a display and making it well-suited for a convenient practical application system. The experimental results in real time applications shows the effectiveness, reliable and efficiency in the proposed approach which able to almost accurately detect and monitor the human blood sample with the ability to detect different types of people gender and blood type. The proposed coding system can be executed at more precise time scheduling which is better than real life human monitoring system.
  • Publication
    Transformation of Thinking-Aloud in assessing hands-on psychomotor: A pilot study
    ( 2021-07-21)
    Zol Bahri Razali
    ;
    Nor Syamina Sharifful Mizam
    ;
    Mohd Hisam Daud
    ;
    Mohamed Mydin Hj M.Abdul Kader
    Evaluation of laboratory experiences of engineering and engineering technology students has led to an increasing in the attention being paid to the development of students' psychomotor skills. One of the reasons that psychomotor seems to be less important in the past is because of the lack of suitable measuring tools despite it is important in the engineering and engineering technology course. Furthermore, a current assessment which is using report and test to evaluate the experience of student practice in the laboratory only help in assessing students' knowledge in cognitive skill. Thus, a new study method is needed to focus on evaluating engineering technology students in terms of their understanding of the component called 'hands-on practical experience' during their practical skill classes or experiment. The existing technique for evaluating psychomotor abilities that have emerged from attempts to improve selection in recruitment processes may provide a potentially useful tool for such a purpose. The point of this study is to create a new approach to test a change in practical experience to assess unintentional learning related to classic psychomotor skills in engineering technology laboratory classes. The methodology used to build up the instrument is portrayed and the empirical data collected to support its validity is presented. Thus, this research aims to find a way to measure the practical skill involve in a psychomotor change in an engineering laboratory class.