Smart Computing and Systems Engineering - 2020 (SCSE 2020)
Permanent URI for this collectionhttp://repository.kln.ac.lk/handle/123456789/23064
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Item Predicting examination performance using machine learning approach: A case study of the Grade 5 scholarship examination in Sri Lanka(Department of Industrial Management, Faculty of Science, University of Kelaniya, Sri Lanka, 2020) Ranawaka, U.M.; Rajapakse, ChathuraUniversal primary school education is a must requirement and one of the criteria that should be fulfilled by the developing countries according to the International development goals which are also recognized as “Eight Millennium Development Goals”. In the context of Sri Lanka, Government is mostly involved in primary education through government-controlled schools. The success of primary education is measured by conducting a scholarship examination. Those who are getting higher results are given opportunities to attend well-facilitated schools for secondary education. Due to that case, there is a massive competition for passing the examination. Limitless pressure for examination provides lots of issues to students. This paper uses data to investigate a model of academic performance as measured by past results of school tests of Grade 4 and Grade 5. 500 students from eight primary schools in the Gampaha district have been selected for collecting data. The Data on the above-mentioned students have been collected by conducting questionnaires to the teachers who incharged the classes. Then the Logistic Regression model and Multiple Linear Regression model have been applied to predict students’ performances at the examination. The model depicts the likelihood of a student passing or failing the grade 5 scholarship examination and predicts the range of results that students will obtain in the examination. The accuracy of predictive models is measured using the results of students who have already faced the Grade 5 examination. Revealing the potential of students at the grade 5 examination is heavily benefited by teachers because they can provide personalized education for talented students and provide opportunities to other students to improve their talents. The initial architecture of the Grade 5 examination results’ predictive model is being discussed in this paper.Item A microtransaction model based on blockchain technology to improve service levels in public transport sector in Sri Lanka(Department of Industrial Management, Faculty of Science, University of Kelaniya, Sri Lanka, 2020) Jayalath, S.A.; Rajapakse, Chathura; Senanayake, J. M. D.Ticketing mechanism in a public transportation system is a major factor which defines the service quality of the system. Current online payment systems (credit/debit cards, PayPal, etc.) are not compatible with micropayments because transaction processing companies need a minimum transaction amount to make the transaction profitable for them. Therefore, an acceptable micro-transaction model is required in the micropayments domain. In blockchain systems, a third-party intermediary is not facilitating the transactions. Therefore, transaction fees decrease drastically. Using consortium blockchain concept, these fees can be further minimized when proof of work is also handled by a set of approved entities. In this study, an Ethereum based micro-transaction model is proposed to be implemented within the ticketing system in Sri Lankan public transport sector. Bus tickets are programmed as Ethereum smart contracts to handle the payment distribution. Consortium blockchain concept is used in the blockchain-based model where there are regulated bodies as nodes such as the national transport commission to handle the proof of work. Digital currency and Quick Response (QR) codes are incorporated to identify and complete the transaction process. The methodology of this development-oriented research can be described under three major phases. In the first phase, interviews were carried out with relevant stakeholders to identify the process of the current system and its limitations. Also, a broad and extensive study of literature was done parallel to this. During the second phase, identified issues, limitations and downfalls were addressed by designing a novel architecture. In the final phase a prototype is being developed to demonstrate the architecture, In the final phase a prototype is being developed to demonstrate the architecture, then prototype validation and testing were done with simulated data and several key use cases in the domain. The preliminary results of the prototype model show signs of considerable improvement in the service level of the public transport ticketing process and a significant reduction of transaction fees.Item Minimization of fraudulent activities in land authentication through Blockchain-based system(Department of Industrial Management, Faculty of Science, University of Kelaniya, Sri Lanka, 2020) Jayabodhi, L.W.D.C.; Rajapakse, Chathura; Senanayake, J.M.D.In Sri Lanka, the land administration process has not been digitized, which has led to plenty of conflicts in determining the real ownership of lands and drastically increasing the land transaction processing time, which has resulted in many fraudulent activities concerning land management. The existing system is majorly paper-based and centralized. Administrators who have the powers to alter the system according to their wishes hold a huge threat for information security and is a centralized system that bears the risk of a single point of failure. Hence, transitioning into another system that could mitigate the drawbacks in the current land authentication system has become a vital need and currently, the knowledge regard this area is very much limited. The decentralized nature of the blockchain-based system has the potential of diluting major limitations in the current system. The overall objective of this research is to mitigate fraudulent activities in land authentication systems through the blockchainbased technological approach. A prototype of a smart contractbased model has been created and verified with the involvement of the actual users. Since the smart contract-based land authentication model verifies the land ownership within a short period, the transaction processing time narrows down from a few months to a couple of minutes. The results show signs of considerable improvements in the efficiency and the security of the land authentication process, the users who interacted with the prototype and presented positive comments.Item Blockchain-based distributed reputation model for ensuring trust in mobile adhoc networks(Department of Industrial Management, Faculty of Science, University of Kelaniya, Sri Lanka, 2020) Peiris, P.P.C.; Rajapakse, Chathura; Jayawardena, B.Mobile ad-hoc networks also known as MANETs have been in global use for numerous applications which are not possible with fixed network topologies. The distributed operation and dynamic topology have encouraged MANETs to be applied for establishing communication in unstable environments. MANET's dynamic topology and mobility have been very advantageous in the fields of military and disaster management. These dynamic characteristics of a MANET also create a major challenge in managing trust between the mobile nodes. Managing the trustworthiness of information that a node provides to the rest of the MANET is very crucial as misinformation spread can lead to erroneous decision making. Although previous studies have been carried out on trust management in MANETs using price-based and reputation systems, the potential of a globally distributed system has not been utilized practically. Therefore, these systems address the trust management issue within a boundary of a single MANET. Above mentioned systems should be re-evaluated when a node from another MANET joins a new MANET as the reputations of the node in the previous MANET cannot be imported to the new MANET. Lack of a possible solution for this gap may result in misinformation spreading by a malicious node before other nodes determine its reputation, which could be very dangerous in sensitive environments. Therefore, a globally distributed reputation model is a timely need in mobile ad-hoc networking. Blockchain technology is one of the most suitable technologies in present for its immutable and distributed properties to build robust systems. Blockchain is a distributed ledger, that has the ability to store feedback from mobile nodes about the accuracy of information provided by other nodes. A trust factor for each node can be calculated using these feedbacks. A mobile node can then decide whether to trust information, based on nodes’ trust factors. Adopting a development-oriented research methodology, a blockchain based reputation model prototype has been implemented and validated within the study.