Now showing 1 - 10 of 29
  • Publication
    Development of IoT-Enabled Smart Water Metering System
    ( 2024-01-01)
    Wen S.D.
    ;
    ; ;
    Hussain A.S.T.
    ;
    Tanveer M.H.
    ;
    Patan R.
    This paper introduces a smart water meter that utilizes the capabilities of the Internet of Things (IoT) to automate the collection of meter readings. The primary goal of this project is to create an IoT-based device for reading water meters, while simultaneously developing a compatible mobile application. Instead of relying on manual meter reading, which requires human effort, this project proposes the use of an IoT-enabled water meter to collect the data automatically. The device employs a camera and Convolutional Neural Network (CNN) for image processing, making it easy to detect the meter reading accurately. The IoT system architecture involves the use of an ESP32 CAM for data collection, a laptop as a gateway, and the Message Queuing Telemetry Transport (MQTT) protocol for data transfer. The collected data is stored in Firebase's real-time database, and the mobile application is designed to monitor and analyze the data. A functional prototype of the device is constructed and tested in a housing area. The collected data is then monitored through the developed mobile application. Lastly, the data is analyzed to assess the suitability of the proposed method, and recommendations for future improvements are provided.
  • Publication
    Experimental Analysis of Flight Altitude for Enhanced Agricultural Drone Spraying Performance
    Effective rice field management and the proper application of agricultural chemicals are crucial for ensuring agricultural product quality. These chemicals control weeds and protect against insect pests, which can harm crop yields and quality. This research explores the relationship between the altitude at which agricultural drones spray chemicals, spray uniformity, and chemical dispersion. The study assesses drone operations at heights of 1m, 1.5m, and 2m above hollow cone nozzles in 2.8m/s wind conditions. It aims to evaluate droplet uniformity and dispersion on water-sensitive paper placed on paddy plants, analyzed with ImageJ software. Results show that at 1.5m height, there's a significantly higher average droplet density, with 162.7 deposits/cm² in the upper region and 161.8 deposits/cm² in the lower region. Additionally, coverage is notably increased, at 55.21% for the upper region and 51.4% for the lower region. This research highlights the importance of optimal drone altitude for efficient chemical application in rice fields, improving crop protection and yield.
  • Publication
    Application of coal bottom ash as raw material for concrete brick in housing construction
    ( 2020-03-25) ; ; ; ;
    Omar S. Dahham
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    Umar M.U.
    ;
    Jaya H.
    Coal and coal-fired power plants are crucial for supplying global energy demand. However, coal-fired power plants produce significant quantities of bottom ash as by-products. Through these power plants, it produces approximately 18 tons of bottom ash each day. Malaysia has the challenging task of dealing with an increasing amount of waste generated by power plants each year. The high cost of construction and operation of incineration plants coupled with a lack of landfills have given rise to the need for waste minimization and recycling. The use of coal ash in concrete is a new dimension in concrete mix design and if applied on large scale can revolutionize the construction industry, by economizing the construction cost and decreasing the ash content. The used of the coal bottom ash in the concrete brick can reduce the wastage of the coal bottom ash in Malaysia, beside that the cost of the housing can be reduced. In addition, the sustainability in the housing construction in Malaysia can be achieved using the wastage material in the construction.
  • Publication
    Roof Re-measurement in Building Works Using Un-manned Aerial Vehicle (UAV) Application System
    ( 2021-01-01)
    Romeli N.
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    ; ;
    Halil F.M.
    The diversities of contractual terms in construction projects leads to a diversified contractual interpretation in one project. In the long term, the contractual discrepancies would result the project suffered from the dispute. Given the circumstances of measurement contracts, which refers to re – measurement or measure and value contracts are normally used when the quantity of the project can’t be describe in the exact amount. In the construction projects that involving complicated design, the difficulty may rose from the initial stage of architectural features. Often, the re-measuring’s fatality occurred when the elements finishes in the building has been over claimed by the contractor. Even so, the uncertainties of client’s instruction have always contributing to the excessive utilization of the fancy finishes in the construction projects. As a result, a dispute ascended due to payments, claim and work done issue. Site re-measurement can be done. However, in regard to almost completed building construction, the site re-measurement may get difficult as human can’t reach the building that has been constructed. Thus, issues on safety and accuracy may followed. Advance technology has provided the ability to implement the building survey without risking of manpower which is using the application of Unmanned Aerial Vehicle (UAV). Therefore, the research is carried out to identify the attributes of UAV application in roof re – measurement in building works and investigate the implementation of the UAV application. Using the literature search, the attributes of UAV application has been identified and the prototype case study has been selected to investigate the process of UAV application for roof site re-measurement. The results indicated that the utilization of UAV application is feasible as the tools for re – measurement of building works as the issues on the safety and accuracy are safeguarded.
  • Publication
    Experimental Analysis of Flight Altitude for Enhanced Agricultural Drone Spraying Performance
    Effective rice field management and the proper application of agricultural chemicals are crucial for ensuring agricultural product quality. These chemicals control weeds and protect against insect pests, which can harm crop yields and quality. This research explores the relationship between the altitude at which agricultural drones spray chemicals, spray uniformity, and chemical dispersion. The study assesses drone operations at heights of 1m, 1.5m, and 2m above hollow cone nozzles in 2.8m/s wind conditions. It aims to evaluate droplet uniformity and dispersion on water-sensitive paper placed on paddy plants, analyzed with ImageJ software. Results show that at 1.5m height, there's a significantly higher average droplet density, with 162.7 deposits/cm² in the upper region and 161.8 deposits/cm² in the lower region. Additionally, coverage is notably increased, at 55.21% for the upper region and 51.4% for the lower region. This research highlights the importance of optimal drone altitude for efficient chemical application in rice fields, improving crop protection and yield.
      1
  • Publication
    FTIR and gel content analyses of LLDPE/Date seeds composites
    ( 2020-03-25)
    Elnaid A.
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    ;
    Dahham O.S.
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    ; ; ;
    Umar M.U.
    The potential of Date Seeds (DS) as a filler was studied. DS were collected, washed and grinned. Three different DS were used, i.e. coarse size (between 700-1000 μm), medium size (between 250-500 μm) and fine size (between 0-125 μm). After that, DS was mixed with linear low-density polyethylene (LLDPE) ar different DS content i.e. 5, 10, 15, and 20 %, and then fed into a twin-screw extruder and subsequently into an injection-moulding machine to produce LLDPE/DS biocomposite. FTIR and Gel-Content analyses were applied in order to study the properties of this composite. It is found that the composites showed five main peaks, at 3345-3347 cm-1, 2910 cm-1, 2847-2848 cm-1, 1462 cm-1, and 718-719 cm-1 respectively. These peaks indicated the existence of LLDPE polymer matrix, DS filler and the interaction between them in the composites. However, there was no significant change in the gel content of the composites compared to LLDPE control, which means the number of crosslinks between LLDPE and DS was limited. The lack of a suitable coupling agent system has effected negatively on the degree of crosslinking of the composite.
      1
  • Publication
    The sustainability of recycled concrete as green material solution
    ( 2020-03-25) ; ; ; ;
    Dahham O.S.
    ;
    Umar M.U.
    ;
    Johari I.
    Nowadays, there are lot of concrete waste were produced from demolition, destruction and others. The usage of concrete is not environmentally friendly due to depletion of reserve natural resources, high energy consumption and disposal issues. Construction debris give a large fraction of solid waste disposal problem, and constitutes the large component. By recycling concrete waste for brick production as replacement the other materials, it can reduce the usage of natural resources and disposal problem that have been occur. The aim of this study to determine the sustainability of the recycled concrete by producing a brick using recycled coarse concrete aggregate at nominal size 10mm. An experiment done by comparing the result of the control specimen using 100% natural sand with specimen that have replaced the sand with recycled concrete aggregate for 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%. The result showed the optimum recycled concrete to produce a brick is at 90% replacement of RCCA where the compressive strength and flexural was achieved 9.7MPA and 3.53MPA respectively with 16133.33 kg/m3 of density. The water absorption of green brick is 9.23% and the cost of brick have been reduced from Rm0.26 to 0.20.
      1
  • Publication
    Spraying Dispersion Analysis with Different Nozzle Types Using a UAV Spraying System in a Paddy Field
    ( 2023-01-01) ; ; ; ;
    Tian T.Y.
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    Yahya S.S.
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    Shahrazel A.A.M.
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    Mansor F.M.
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    Aziz S.Z.A.
    ;
    Hussain A.S.T.
    This study investigates the ability of Unmanned Aerial Vehicle (UAV) spraying systems to be used as an agriculture spraying method in Malaysia. The operating height of the UAV was 1.5 m with three different nozzles were investigated within a wind speed of 1.15 m/s to determine spray uniformity and dispersion in the paddy field conditions. The results from these samples were evaluated by using ImageJ software. The results show that the droplet distribution by using an electrostatic centrifugal nozzle has a high average droplet density, which is 134.03 deposits/cm2 for the top area and 153.93 deposits/cm2 for the bottom area. The electrostatic centrifugal nozzle also testified to the high value of total droplet deposit at 3478 for the top area and 3255 for the bottom area.
      1
  • Publication
    X-means clustering for wireless sensor networks
    ( 2020-09-01)
    Radwan A.
    ;
    Kamarudin N.
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    Solihin M.I.
    ;
    Leong H.
    ;
    Rizon M.
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    ;
    K-means clustering algorithms of wireless sensor networks are potential solutions that prolong the network lifetime. However, limitations hamper these algorithms, where they depend on a deterministic K-value and random centroids to cluster their networks. But, a bad choice of the K-value and centroid locations leads to unbalanced clusters, thus unbalanced energy consumption. This paper proposes X-means algorithm as a new clustering technique that overcomes K-means limitations; clusters constructed using tentative centroids called parents in an initial phase. After that, parent centroids split into a range of positions called children, and children compete in a recursive process to construct clusters. Results show that X-means outperformed the traditional K-means algorithm and optimized the energy consumption.
      3
  • Publication
    Analysis on the Relationship Between Safety Culture and Complexity Factors in Marine Construction Safety Performances
    Safety is vital in reducing the possibilities of an accident and by increasing the safety measures in the workplace it may lead to the performance of the project. To improve the safety measures especially in marine construction project, the influence factors that contribute to safety culture factor must be studied and analyzed. However, the complexity factor that occurs during the implementation is important to be considered. Therefore, the objective of this research is to discover the relationship between safety culture and complexity factors towards marine construction safety performance. The correlation analysis was performed using Pearson’s Correlation Coefficient to measure the strength of relationship between the influenced factors. The results show that all the factors have strong linear correlation and the findings are beneficial to be used as framework to practical parties to improve their safety culture performances specifically in marine construction.
      1