eJournal Jabatan Pendidikan Politeknik dan Kolej Komuniti
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Effects of Structural, Electrical and Raman Properties of Al-Doped TiO2 Thin Films Acquired by Sol-gel Spin Coating Method
Get PDFTitanium dioxide (TiO2) is well known for its excellent photocatalytic properties and potential applications, particularly in gas sensing. However, its high resistivity can limit its performance in such applications. This study explores the effect of aluminium (Al) doping on the structural, electrical, and Raman properties of TiO2 thin films, to optimise their performance for gas sensor applications. TiO2 films were prepared with varying Al concentrations (1 wt.%, 2 wt.%, 3 wt.%, 4 wt.%, 5 wt.%, and 6 wt.%) using the sol-gel spin coating method. The films were characterised using X-ray diffraction (XRD), current-voltage (IV) measurements, and Raman spectroscopy. The results show that doping with 3 wt.% Al significantly improves the structural, electrical, and Raman properties of the films, yielding the lowest resistivity value of 734.873 Ω-cm and the most pronounced anatase peak in the Raman spectra. These findings indicate that 3 wt.% Al doping optimises TiO2 thin films for gas sensor applications, offering potential improvements for environmental and industrial sensing technologies
Impact of E-Book Operating Systems on Motivation and Academic Performance Among Different Cognitive Styles in the Information Technology Department at Politeknik Seberang Perai
No full textThe research seeks to evaluate the efficacy of using the E-Book Operating System in terms of motivation, performance on achievement tests, and cognitive load experienced by students. The purpose of this study was to examine variations in motivation levels among students with varying levels of knowledge, establish the correlation between motivation and achievement test scores, and ascertain whether cognitive burden acts as a mediator between student motivation and test performance. The assessment was carried out by administering before and post tests using the Instructional Materials Motivational Scale (IMMS) survey questionnaire and the NASA Task Load Index cognitive load test (NASA-TLX). The research use experimental quasi-methods to collect data, which is then subjected to quantitative analysis utilising pairs-t tests and PLS-SEM. Seberang Perai Polytechnic has a cohort of 80 students enrolled in the subject Operating Systems for the first semester. There are notable disparities in the accomplishment test scores, motivation levels, and cognitive load of pupils before and after using the E-book Operating System. The pair-t test findings indicated substantial disparities in achievement test performance across children, with t-values of -11.515 (p = 0.000) and -12.729 (p = 0.000). Prior to and following the utilisation of the E-Book Operating System, there was a substantial disparity in motivation levels among students. This was evident both before (T = -158.650, P = 0.000) and after (T = -158.796, P = 0.000) the implementation of e-books. Furthermore, motivation exhibited a significant correlation with students\u27 academic progress (t = 5.597, p = 0.00). The analysis reveals that cognitive strain serves as a substantial mediator between motivation and student achievement test performance (β:0.106, t:4.904, p = 0.00). To summarise, the E-Book Operating System serves as a viable option for enhancing teaching materials. It may be used as a comprehensive resource for the study of operating systems, while also stimulating student engagement and academic performance. Essentially, this strategy may be used as a tool for teaching and assisting instructional material creators in selecting suitable applications and adapting to various kinds of learning, particularly those based on e-books
Transforming A Discarded Denim Jeans into Crafted Products: A Zero-Waste Approach
Get PDFThe increase in textile waste, particularly within the apparel sector, underscores the need for innovative approaches in resource management and a focus on sustainability-oriented methods. This article delves into a groundbreaking methodology for repurposing textile waste, specifically targeting discarded denim jeans, with the aim of generating multiple value-added craft products. At the heart of this investigation lies the zero-waste approach, directing each stage of the process towards minimizing adverse environmental impacts. A pivotal emphasis is placed on the zero-waste approach as a cornerstone, yielding favorable outcomes in adding value to discarded denim garments. Research objectives are delineated to identify the transformation potential of discarded denim jeans, develop zero-waste methodologies in the transformation process, and generate seven innovative and practical craft products. Methodological frameworks encompass studio practices for crafting to gauge the impact of zero-waste approaches at each transformation phase. Findings demonstrate the efficacy of zero-waste techniques in repurposing discarded denim, thereby reducing waste and ecological footprints. Discussions highlight positive implications for the textile industry and broader sustainability endeavors. Conclusively, embracing zero-waste methodologies in textile waste transformation presents novel avenues for waste reduction and the creation of innovative craft products, offering a promising outlook on global textile waste management
PINE-ZODIAC: Methods of Mastering Ray Diagrams for Convex Lens Among Students of Kolej Vokasional Seri Manjung
Get PDFThis study was carried out due to the concern of the researchers after observing the students\u27 poor performances in mastering the ray diagrams for convex lens involving various positions of objects and the impact on changes in the position of images, characteristics and examples of optical equipment. The objectives of the research are to increase students\u27 performance in this topic, to attract students’ interest in learning a difficult topic, and to develop interesting and effective Teaching Aids. The study was conducted on 40 students in the second year of the Sijil Vokasional Malaysia (SVM) at Kolej Vokasional Seri Manjung. This study involved the technique of drawing convex lens ray diagrams using the Pine- Zodiac (PZ) Technique as well as the use of PZ model. Research methodology used is the Kemmis & McTaggart model (1988) through Pre and Post-test instruments, interviews and surveys. The PZ Technique is used as an intervention. Statistical analyses were performed using SPSS 27.0 software. Significant difference pre- and post- intervention were determined using T-Test while significant difference in groups were determined by Spearman Test for the Likert Scale, with significance accepted at p<0.05. The higher mean score after using the PZ technique which is -58.325. In conclusion, the PZ Technique is really beneficial for both students and teachers as students’ achievement can be enhanced, students’ confidence can be increased, and the Teaching Aids alternative. Hence, this technique can be developed through blended-learning involving face-to-face and virtual lesson in the future
A Study of Student Perception Towards Programming Learning Using the CodeHS Platform at Kolej Komuniti Pasir Salak
Get PDFThis study aims to survey students\u27 perceptions of programming learning using the CodeHS platform at Kolej Komuniti Pasir Salak. Computer programming learning often faces challenges in attracting student interest and engagement due to the general perception of complexity. Through a survey of 19 second-semester students enrolled in the Basic Programming course, this study collected data using a Likert scale questionnaire focusing on perception, interaction, and acceptance of the platform. The findings revealed that the CodeHS platform created a more enjoyable and interactive learning environment, with students\u27 overall perception rated at a very high level (mean = 4.276). Interaction between students and lecturers also improved significantly, with a mean score of 4.460, fostering collaboration and enhancing learning experiences. Furthermore, students exhibited high acceptance of the platform, with a mean score of 4.389, citing ease of use and user-friendliness. These results demonstrate the potential of CodeHS to improve student motivation, engagement, and programming mastery. The study provides practical insights for educators to adopt innovative teaching strategies and integrate effective technological tools in programming education
Evaluating Coffee Essential Oil for Sustainable and Natural Perfume Formulations
Get PDFPerfumes are widely used cosmetic products that enhance personal appeal and boost self-confidence. Perfumes can be classified based on the proportion of fragrant oil, alcohol, and boosters derived from natural essential oils produced by aromatic plants. This study focuses on the development of a natural perfume formulation using coffee 434 essential oil, a novel ingredient with distinct aromatic properties and potential health benefits compared to synthetic perfumes. The research utilises an experimental approach that involves the extraction process of coffee 434 essential oil using Soxhlet and perfume formulation, assessment, and final product creation. Various fragrance blends were formulated by combining the essential oil with scents such as strawberry, peach, and vanilla. These formulations were evaluated for physiochemical properties, including pH, scent longevity, spot testing, flammability, and Fourier-transform infrared (FTIR) spectroscopy. Results showed that Strawberry B, Peach B, Vanilla A, and Original A exhibited the longest-lasting scents with minimal flammability. The FTIR spectra (400–4000 cm⁻¹) revealed O-H stretching vibrations of hydroxyl groups in coffee essential oil, peaking between 3000 and 2500 cm⁻¹. Notably, Peach B and Vanilla A achieved scent longevity up to 50 minutes and diffusion distances of 79 cm, confirming their suitability for personal use. These findings have significant implications for the local fragrance industry, highlighting the potential of coffee 434 essential oil to support sustainable and health-conscious alternatives to synthetic perfumes. By integrating natural ingredients, manufacturers can address growing consumer demand for eco-friendly products, reduce environmental impact, and offer safer options, positioning these formulations for wider adoption in both local and international markets
Enhancing Woodball Performance: Assessing the Effectiveness of the Ball Placement Jig for Beginners
Get PDFWoodball is a skill-based game where success depends on achieving the fewest successful hits on the gate. The main factor in performance is the player’s ability to consistently align and place the ball accurately. However, many players, particularly beginners, struggle with maintaining proper alignment, which negatively impacts their game. This study evaluates the effectiveness of the Ball Placement Jig, a training tool designed to improve ball alignment and placement for beginner woodball players. Woodball success relies on precise alignment and accurate ball placement, yet beginners often struggle with these skills, leading to reduced performance. Twenty participants were assessed on their ability to hit the ball through the gate under two conditions: with and without the jig. Results showed a significant improvement, with successful gate-ins rising from 12% without the jig to 51% with it. Survey feedback indicated the jig’s ease of use and suitability for beginners across genders, highlighting its potential to enhance practice sessions, build player confidence, and support skill development. The findings suggest that the Ball Placement Jig is an effective tool for fostering engagement and growth in woodball, particularly for novice players
Development of an IoT-Based Plant Watering System for Automated Irrigation
Get PDFThe growing demand for sustainable water management in agriculture highlights the need for more efficient irrigation systems. Traditional irrigation methods often lead to water wastage and inconsistent plant health due to issues of overwatering or underwatering. To address these challenges, this study presents the development of an Internet of Things (IoT)-based plant watering system (IoT-PWS) to automate and optimize the irrigation processes in various environments, including homes, offices, and gardens. The IoT-PWS integrates an ESP8266 microcontroller with sensors that monitor key environmental parameters, such as soil moisture, air temperature, humidity, and water levels. The system processes real-time data through the Blynk application, enabling remote monitoring and control. The use of time-series analysis allows for dynamic adjustments to irrigation schedules, ensuring optimal soil moisture and preventing rapid moisture declines. Testing demonstrated that the system maintained optimal moisture levels for approximately 73% of the time, confirming its effectiveness in diverse settings. While the system proved cost-efficient and adaptable, there remains potential for further improvements in sensor accuracy and water usage optimisation. This research contributes to the field of smart agriculture by offering a scalable solution for sustainable irrigation, which could play an important role in reducing water consumption and promoting healthier plant growth. Future enhancements may focus on improving sensor accuracy and further optimizing water usage strategies. This research would contribute to the broader field of sustainable agricultural practices by offering a scalable solution for automated irrigation management, promoting sustainable water usage and healthy plant growth
Development of Internet of Things (IoT) Based by Using Blynk for Irrigation and Fertigation System
Get PDFUrban agriculture provides innovative solutions to meet the growing demand for sustainable food production in areas with limited ground availability, particularly in densely populated urban regions. A significant challenge for urban gardeners and plant enthusiasts is maintaining plant health during prolonged absences, often resulting in dehydration and plant loss. This research introduces a smart irrigation system designed to automate plant care and enhance convenience. The system incorporates a soil moisture sensor, a liquid ultrasonic sensor, and the Blynk application for efficient monitoring and management of irrigation processes. Inventor software was used to design the system, construct circuits, and develop an intuitive application interface. The system operates autonomously, watering plants when low soil moisture is detected, while also enabling users to manually activate irrigation via a mobile application during extreme weather conditions or emergencies. Real-time data on soil moisture and water levels are transmitted to the user’s mobile device through the internet, ensuring seamless remote control and monitoring. The methodology involved integrating hardware and software components, calibrating the system, and conducting performance evaluations to validate its reliability. Experimental results demonstrated the system’s capability to maintain optimal plant health by addressing dehydration risks effectively. This research offers a practical, efficient, and user-friendly solution for urban gardeners, contributing to the development of innovative and sustainable urban agriculture practices. By addressing key challenges associated with plant care in restricted environments, the system could promote convenience, reliability, and improved plant vitality in modern living spaces, advancing the potential for smart urban farming solutions
Autonomous Navigation: An Arduino-Based Smart Car Obstacle Avoidance System
Get PDFAutonomous car navigation is currently attracting considerable research interests. The design of an Arduino-based smart car obstacle avoidance system includes the use of ultrasonic sensor to detect obstacles and control the car\u27s movement. The system is designed and developed to operate in self-driven remote to avoid obstacles and reduces collisions. This paper presents the prototype development of a smart car obstacle avoidance system using Arduino microcontroller and ultrasonic sensor. The research methodology operates by using ultrasonic sensor to detect obstacles, emit sound waves, and measure the time it takes for the waves to be reflected. Arduino microcontroller serves as the system\u27s control unit which enables the real-time analysis of sensor data and control the movement of the car. Arduino microcontroller processes the data and calculates the distance of the obstacles. The direction and speed of the car is adjusted based on the calculated distance to avoid collision. The proposed system is intended to provide a cost-effective, efficient, and reliable obstacle avoidance system that could be used in various applications, such as robotics and automated vehicles. The success of the system is determined by the accuracy of the sensor data and the effectiveness of the control algorithms used to drive the car through the environment. Overall, the design of an Arduino-based smart car obstacle avoidance system is an interesting and innovative application of robotics technology