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Recommender system for surplus stock clearance

10.11591/ijece.v9i5.pp3813-3821
Vipul Agarwal , Vijayalakshmi A
Accumulation of the stock had been a major concern for retail shop owners. Surplus stock could be minimized if the system could continuously monitor the accumulated stock and recommend the stock which requires clearance. Recommender Systems computes the data, shadowing the manual work and give efficient recommendations to overcome stock accumulation, creating space for new stock for sale to enhance the profit in business. An intelligent recommender system was built that could work with the data and help the shop owners to overcome the issue of surplus stock in a remarkable way. An item-item collaborative filtering technique with Pearson similarity metric was used to draw the similarity between the items and accordingly give recommendations. The results obtained on the dataset highlighted the top-N items using the Pearson similarity and the Cosine similarity. The items having the highest rank had the highest accumulation and required attention to be cleared. The comparison is drawn for the precision and recall obtained by the similarity metrics used. The evaluation of the existing work was done using precision and recall, where the precision obtained was remarkable, while the recall has the scope of increment but in turn, it would reduce the value of precision. Thus, there lies a scope of reducing the stock accumulation with the help of a recommender system and overcome losses to maximize profit
Volume: 9
Issue: 5
Page: 3813-3821
Publish at: 2019-10-01

Fractal Yagi-Uda antenna for WLAN applications

10.12928/telkomnika.v17i5.12797
Amerrul; Universiti Teknologi Malaysia Zabri , M. K. A.; Universiti Teknologi Malaysia Rahim , F.; Universiti Teknologi Malaysia Zubir , N. M.; Universiti Teknologi Malaysia Nadzir , H. A.; Universiti Tun Hussein Onn Malaysia Majid
This paper describes the development of a Fractal printed Yagi-Uda antenna for Wireless Local Area Network (WLAN) applications operating at 2.4 GHz frequency. In miniaturizing the dimensions of an antenna, fractal method is applied where the 1st iteration and 2nd iteration is implemented. The Computer Simulation Technology (CST) software is used as the platform to design and simulate the antenna. The substrate material used is the FR-4 board which has a dielectric constant of 5.4, the thickness of 1.6mm and tangent loss of 0.019. The antenna performance interm of the reflection coefficient, radiation pattern and gain are compared and analyzed. For the 1st iteration, 22.81% of reduction size has been achieved and 30.81% reduction of the antenna size for 2nd iteration has been achieved.
Volume: 17
Issue: 5
Page: 2155-2160
Publish at: 2019-10-01

A voltage electrical distance application for power system load shedding considering the primary and secondary generator controls

10.11591/ijece.v9i5.pp3993-4002
Le Trong Nghia , Quyen Huy Anh , Phan Thi Thanh Binh , N Thai An , P. H. Hau
This paper proposes a method for determining location and calculating the minimum amount of power load needed to shed in order to recover the frequency back to the allowable range. Based on the consideration of the primary control of the turbine governor and the reserve power of the generators for secondary control, the minimum amount of load shedding was calculated in order to recover the frequency of the power system. Computation and analysis of the voltage electrical distance between the outage generator and the loads to prioritize distribution of the amount power load shedding at load bus positions. The nearer the load bus from the outage generator is, the higher the amount of load shedding will shed and vice versa. With this technique, a large amount of load shedding could be avoided, hence, saved from economic losses, and customer service interruption. The effectiveness of the proposed method tested on the IEEE 37 bus 9 generators power system standard has demonstrated the effectiveness of this method.
Volume: 9
Issue: 5
Page: 3993-4002
Publish at: 2019-10-01

Information system of Limboto Lake potential management

10.12928/telkomnika.v17i5.11800
Lanto Ningrayati; Universitas Negeri Gorontalo Amali , Sunarty; Universitas Negeri Gorontalo Eraku , Ishak; Universitas Negeri Gorontalo Isa , Rifadli; Universitas Negeri Gorontalo Bahsuan , Sitti; Universitas Negeri Gorontalo Suhada , Muhammad Rifai; Universitas Negeri Gorontalo Katili
Limboto Lake is one of the lakes in Gorontalo Province; its water supply is generated from 23 small and large rivers. The lake holds potential in several sectors, e.g., tourism, fisheries, socio-economy and culture. However, such an advantage has no quality information system as it is found that there are no particular services that manage the information regarding Limboto Lake accurately. The objective of this research is to create an information system for the management of the potential area of the lake to provide quality services to access the information accurately and completely. The provided information is also updated timely. This research employed the System Development Life Cycle (SDLC) method in the development of the information system. Furthermore, the data were collected from interview, observation, and reviewing literature and document. This system is tested using white box and black box where it generated the expected outcome and is web-based. The output of this research is a system that eases the society to access the information regarding the management of the potential area in Limboto Lake.
Volume: 17
Issue: 5
Page: 2292-2300
Publish at: 2019-10-01

Optimization of PID for industrial electro-hydraulic actuator using PSOGSA

10.12928/telkomnika.v17i5.12808
Mohammed Maged Abdullah; Universiti Malaysia Perlis Alqadasi , Siti Marhainis; Universiti Malaysia Perlis Othman , M. F.; Universiti Teknologi Malaysia Rahmat , Fahisal; Universiti Malaysia Perlis Abdullah
The Electro-hydraulic actuator (EHA) systems known to be extremely nonlinear due to its dynamic characteristics and these existing nonlinearities and uncertainties yield to the constraint in the control of EHA system, which influences the position tracking accuracy and affect the occurrences of leakage and friction in the system. The purpose of this work is to develop the mathematical model for the industrial electrohydraulic actuator, then to design a controller by proportional-integral-derivative (PID) and optimize the parameters using Particle Swarm Optimization - Gravitational Search Algorithm (PSOGSA). A few controllers such as conventional PID (CPID) and model reference adaptive control (MRAC) designed for comparison. The performance of PID, PID-PSOGSA and modern controller MRAC will be compared in order to determine the most efficient controller. Despite all controllers are capable to provide good performance, PID-PSOGSA control methods generate good response compared to PID and MRAC in term of positioning.
Volume: 17
Issue: 5
Page: 2625-2635
Publish at: 2019-10-01

Multi-objective attendance and management information system using computer application in industry strip

10.11591/ijeecs.v16.i1.pp371-381
Ahmed Hazim Alhilali , Nabeel Salih Ali , Mohammed Falih Kadhim , Basheer Al-Sadawi , Haider Alsharqi
Information technology has played a vital factor in a competitive advantage for various business firms recently. Hence, catching up Investment of IT in most of the traditional industries for competitiveness purposes due to the relationship between organizational performance and IT use. In this study, attendanceand management information system (AMIS) was presented in the industry field based on multi-modules. Modules are management information, time- scheduling and attendance, and employee self- service module. The system used VB.NET environment for programming perspective as well MS SQL server for database storage. The system is secure and robust recordkeeping, keep employee up to date via self- service access, easy to use (simplified) and powerful time and attendance, active work schedules to make an employee happy and keep workers in the loop, as well, review and exporting different reports for staff manager, supervisor, and employee such as absence, vacation, time-off, employee wages, and etc.
Volume: 16
Issue: 1
Page: 371-381
Publish at: 2019-10-01

An empiric path towards fraud detection and protection for NFC-enabled mobile payment system

10.12928/telkomnika.v17i5.12290
Pinki Prakash; K.L.E. Foundation Vishwakarma , Amiya Kumar; Don Bosco Institute of Technology Tripathy , Srikanth; K. L. E. Foundation Vemuru
The synthesis of NFC technology accompanying mobile payment is a state-of-the-art resolution for payment users. In view of rapid development in electronic payment system there is rise in fraudulent activity in banking transactions associated with credit cards and card-not-present transaction. M-Commerce aid the consumers and helps to bestow real-time information in payment system. Due to the familiarization of m-commerce there is cogent increase in the number of fraudulent activities, emerging in billions of dollar loss every year worldwide. To absolute the security breaches, payment transactions could be confined by considering various parameters like user and device authentication, consumer behavior pattern, geolocation and velocity. In this paper we formally assay NFC-enabled mobile payment fraud detection ecosystem using score-based evaluation method. The fraud detection ecosystem will provide a solution based on transaction risk-modeling, scoring transaction, business rule-based, and cross-field referencing. The score-based evaluation method will analyze the transaction and reckon every transaction for fraud risk and take pertinent decision.
Volume: 17
Issue: 5
Page: 2313-2320
Publish at: 2019-10-01

IoT-based intelligent irrigation management and monitoring system using arduino

10.12928/telkomnika.v17i5.12818
Fidaus; Universiti Teknologi Malaysia Kamaruddin , Nik Noordini; Universiti Teknologi Malaysia Nik Abd Malik , Noor Asniza; Universiti Teknologi Malaysia Murad , Nurul Mu’azzah; Universiti Teknologi Malaysia Abdul Latiff , Sharifah Kamilah Syed; Universiti Teknologi Malaysia Yusof , Shipun Anuar; Universiti Tun Hussein Onn Malaysia Hamzah
Plants, flowers and crops are living things around us that makes our earth more productive and beautiful. In order to growth healthy, they need water, light and nutrition from the soil in order to effect cleaning air naturally and produce oxygen to the world. Therefore, a technology that manage to brilliantly control plants watering rate according to its soil moisture and user requirement is proposed in this paper. The developed system included an Internet of Things (IoT) in Wireless Sensor Network (WSN) environment where it manages and monitors the irrigation system either manually or automatically, depending on the user requirement. This proposed system applied Arduino technology and NRF24L01 as the microprocessor and transceiver for the communication channel, respectively. Smart agriculture and smart lifestyle can be developed by implementing this technology for the future work. It will save the budget for hiring employees and prevent from water wastage in daily necessities.
Volume: 17
Issue: 5
Page: 2378-2388
Publish at: 2019-10-01

A new two-scroll chaotic system with two nonlinearities: dynamical analysis and circuit simulation

10.12928/telkomnika.v17i5.10650
Sundarapandian; Vel Tech University Avadi Vaidyanathan , Aceng; Universitas Muhammadiyah Tasikmalaya Sambas , Sen; Xiangtan University Zhang , Yicheng; Xiangtan University Zeng , Mohamad Afendee; Universiti Sultan Zainal Abidin Mohamed , Mustafa; Universiti Sultan Zainal Abidin Mamat
Chaos theory has several applications in science and engineering. In this work, we announce a new two-scroll chaotic system with two nonlinearities. The dynamical properties of the system such as dissipativity, equilibrium points, Lyapunov exponents, Kaplan-Yorke dimension and bifurcation diagram are explored in detail. The presence of coexisting chaotic attractors, coexisting chaotic and periodic attractors in the system is also investigated. In addition, the offset boosting of a variable in the new chaotic system is achieved by adding a single controlled constant. It is shown that the new chaotic system has rotation symmetry about the z-axis. An electronic circuit simulation of the new two-scroll chaotic system is built using Multisim to check the feasibility of the theoretical model. 
Volume: 17
Issue: 5
Page: 2465-2474
Publish at: 2019-10-01

Taylor series method in TDOA approach for indoor positioning system

10.11591/ijece.v9i5.pp3927-3933
Diniya Jose , Shoney Sebastian
Localisation technologies have always remained in the limelight of positioning-science as researchers have ever shown keen interest to know the exact positions of things. Ultrasonic sensors are mainly used for localisation of mobile robots since they provide high accuracy. This paper presents Taylor Series Method in Time Difference of Arrival approach using ultrasonic sensors.Signals are send from the sensors periodically.The time difference of arrival of signals from the ultrasonic sensors is used by the receiver unit to estimate the location of the mobile unit. The equations formed by using Time Difference of Approach are solved using Taylor Series Method. Taylor Series Method provides a more accurate result since they give less error compared to other methods and they ignore the measurement errors.
Volume: 9
Issue: 5
Page: 3927-3933
Publish at: 2019-10-01

The classification of the modern arabic poetry using machine learning

10.12928/telkomnika.v17i5.12646
Munef Abdullah; Northern Technical University Ahmed , Raed Abdulkareem; Northern Technical University Hasan , Ahmed Hussein; AL Salam University Ali , Mostafa Abdulghafoor; Great Imam University College Mohammed
In recent years, working on text classification and analysis of Arabic texts using machine learning has seen some progress, but most of this research has not focused on Arabic poetry. Because of some difficulties in the analysis of Arabic poetry, it was required the use of standard Arabic language on which “Al Arud”, the science of studying poetry is based. This paper presents an approach that uses machine learning for the classification of modern Arabic poetry into four types: love poems, Islamic poems, social poems, and political poems. Each of these species usually has features that indicate the class of the poem. Despite the challenges generated by the difficulty of the rules of the Arabic language on which this classification depends, we proposed a new automatic way of modern Arabic poems classification to solve these issues. The recommended method is suitable for the above-mentioned classes of poems. This study used Naïve Bayes, Support Vector Machines, and Linear Support Vector for the classification processes. Data preprocessing was an important step of the approach in this paper, as it increased the accuracy of the classification.
Volume: 17
Issue: 5
Page: 2667-2674
Publish at: 2019-10-01

A cashless payment transaction (CPaT) using RFID technology

10.11591/ijeecs.v16.i1.pp191-199
Norsuzila Ya’acob , AzitaLaily Yusoff , Suzi Seroja Sarnin , Darmawaty Mohd Ali , Nani Fadzlina Naim , Murizah Kassim , Nur Amirah Binti Mohd Azni
Virtual money is an actual money that a person own but in a form of a plastic card, an online account and a token or a ticket. Referring to the cash-base system, it is full of fraud and money scam activity. It even happens in a smaller division of a human population which are among family members. For example, when a child decided to do a money scam towards their parents by asking for extra money for what they actually needed to pay for school internal fee and with today’s technology, they can easily recreate a receipt of the payment based on the amount of money they have scammed. In this Cashless Payment Transaction (CPaT) in a school based on Low Frequency (LF) RFID Technology system, the system offers a virtual money transaction in the plastic card form and allows the transaction to be monitored by parents with the help of Radio Frequency Identification (RFID) technology, MySQL database and Email notification system. The MySQL database is paired with the PHP prgramming language  where the calculation for deduction credit will be done before being updated to the RFID card and MySQL database. As a result, the system will allow a cash-free transaction for school payment activity and allow parents to monitor their child spending activity and nutrition intake via MySQL database that are designed based on Graphical User Interface (GUI) within one minute after the transaction is successfully done.
Volume: 16
Issue: 1
Page: 191-199
Publish at: 2019-10-01

Performance simulation of the integration of hybrid stand-alone photovoltaic system at Tuba Island

10.11591/ijeecs.v16.i1.pp107-115
Shahril Irwan Sulaiman , Nur Amira Ali
Hybrid photovoltaic-diesel generator power system is important for rural electrification with the diesel generator supplying electricity when battery bank fails to meet the load demand. However, the operation of diesel generator could also be very costly due to high operation and maintenance cost when compared to photovoltaic-battery system. As a result, proper sizing must be conducted to determine the economic indicators of the hybrid photovoltaic-diesel generator system throughout its lifetime. This paper presents the design of such system for an island resort in Langkawi, Kedah, Malaysia. HOMER software was used to simulate the design parameters and economic performance of the system as compared to the existing diesel generator system. Apart from that, different capacities of PV array, battery bank and inverter were investigated in this study to determine the optimum configuration of these components such that the total cost of supplying the load demand at the resort could be minimized. The results showed that the hybrid photovoltaic-diesel generator system is more economically feasible than the existing diesel generator system used at the resort.
Volume: 16
Issue: 1
Page: 107-115
Publish at: 2019-10-01

Circular polarization folded reflectarray antenna for 5G applications

10.12928/telkomnika.v17i5.12812
Mohd Fairus Mohd; Universiti Teknologi Malaysia Yusoff , Lim Jit; Universiti Teknologi Malaysia Min , Mohamad Rijal; Universiti Teknologi Malaysia Hamid , Zaharah; Universiti Teknologi Malaysia Johari , Muhammad Naeem; Universiti Teknologi Malaysia Iqbal
Fifth-generation (5G) is a wireless connection built specifically to keep up with the rapid increase of devices that need a mobile internet connection. A system working on 5G band can provide higher bandwidth and faster data rate as compared to fourth-generation (4G) band. Thus, an antenna with higher gain and lower profile is required to support this system. On the other hand, the performance of circular polarization antenna is better than linear polarization antenna due to its ability to accept wave from different direction. In this project, a low profile circular polarization folded reflectarray antenna with operating frequency of 28 GHz is presented. This project is divided into two parts. In the first part, a linear polarization folded reflectarray antenna is designed. In this second part, a meander lines polarizer is used to convert the linear polarization antenna to circular polarization antenna. The antenna is fed by a linear polarized waveguide. Each radiating element of the antenna is in rectangular shape. The size of the radiating elements are selected according to obtain required phase delay to form a planar phase front in the far-field distance. Both of the antennas are simulated by using Computer Simulation Technology (CST) software. Finally, the results shows excellent performances with 16.81dB directivity and 1.49dB axial ratio at 28GHz. Thus, the antenna is very suitable for 5G applications.
Volume: 17
Issue: 5
Page: 2250-2257
Publish at: 2019-10-01

Effect of Red Y2O3:Eu3+ phosphor on the color quality and luminous efficacy of the 7000K IPW-LEDs

10.12928/telkomnika.v17i5.11391
Van-Duc; Nguyen Tat Thanh University Phan , Minh; Ton Duc Thang University Tran , Le Anh; Ton Duc Thang University Vu , Hoang-Nam; Ton Duc Thang University Nguyen , Tran Thanh; Ho Chi Minh City University of Food Industry Trang
In this study, we investigate the effect of concentration of the red Y2O3:Eu3+ phosphor on the Color Rendering Index (CRI), Color Quality Scale (CQS) and Lumen Output (LO) of the 7000K in-cup packaging white LEDs (IPW-LEDs). The physical model of the 7000K IPW-LEDs is conducted by Light Tools software. By varying the concentration of the red phosphor from 0% to 0.36%, we use the Light Tools software to investigate the CRI, CQS, and LO of the 7000K IPW-LEDs. From the research results, it can be observed that the CRI and CQS can be increased to 85 and 71, respectively. However, the LO has a decrease in the increasing trend of the red phosphor concentration. This paper provides the new recommendation for the manufacturing of the IPW-LEDs.
Volume: 17
Issue: 5
Page: 2512-2516
Publish at: 2019-10-01
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