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Information system supporting research on rubber in Thailand

10.11591/ijece.v11i2.pp1424-1430
Siriwan Kajornkasirat , Jirapond Muangprathub , Nathaphon Boonnam , Teerawad Sriklin
his research aimed to develop an information system supporting research on rubber (ISSR) in Thailand. This system was designed as a web application with responsive web design. The rubber database was developed with MySQL, used Apache Server as a Web Server and programed with PHP-script. High Chart, Google Chart API and Java Technology were used to represent an online information with graphical format. The system was tested with the actual data on rubber research in Southern Thailand. The system has been available online at URL http://www.s-cm.site/issr. There are three type of users: administrator, researcher (member) and generic user. The researcher performed data entry about research with log-in to the system using username and password provided by the automatic system via online registration form. The administrator can manage the research information. The researchers can manage their research information, use searching tool and leave comments on other member’s research. The generic users can access the system without username and password to view the research and general information on rubber. Moreover, the system generates a report on rubber research with online graphical format. In conclusion, this information system enhances investigation on rubber research in Thailand and its strategy planning for rubber plantation in the future.
Volume: 11
Issue: 2
Page: 1424-1430
Publish at: 2021-04-01

Denoising of EEG signal based on word imagination using ICA for artifact and noise removal on unspoken speech

10.11591/ijeecs.v22.i1.pp83-88
Efy Yosrita , Rosida Nur Aziza , Rahma Farah Ningrum , Givary Muhammad
The purpose of this research is to observe the effectiveness of independent component analysis (ICA) method for denoising raw EEG signals based on word imagination, which will be used for word classification on unspoken speech. The electroencephalogram (EEG) signals are signals that represent the electrical activities of the human brain when someone is doing activities, such as sleeping, thinking or other physical activities. EEG data based on the word imagination used for the research is accompanied by artifacts, that come from muscle movements, heartbeat, eye blink, voltage and so on. In previous studies, the ICA method has been widely used and effective for relieving physiological artifacts. Artifact to signal ratio (ASR) is used to measure the effectiveness of ICA in this study. If the ratio is getting larger, the ICA method is considered effective for clearing noise and artifacts from the EEG data. Based on the experiment, the obtained ASR values from 11 subjects on 14 electrodes amounted are within the range of 0,910 to 1,080. Thus, it can be concluded that ICA is effective for removing artifacts from EEG signals based on word imagination.
Volume: 22
Issue: 1
Page: 83-88
Publish at: 2021-04-01

A survey on predicting oil spills by studying its causes using deep learning techniques

10.11591/ijeecs.v22.i1.pp580-589
Mona Mohamed Nasr , Fahd Kamal Al-Sheref , Yasmen Samhan Abd Elwahab
It’s so easy to know the accidents as it’s already happened and solving these accidents is immediately handled, but searching for a solution for these accidents, don’t deny the existence of reasons that made accidents happen. Knowing the source of accidents will help in avoiding them to occur in the future. It’s an important field in searching as some human lives depend on the safety of such a field, so it’s so important to use a powerful technique to define these reasons as the research point in spill accidents and predicting accidents and to predict the occurrence of the accident before its happening depending on its reasons that lead to that accident in past times so with similar conditions it might happen an accident but it needs a sufficient data and a powerful technique such as deep learning techniques that give very precise results and by using this tool an Intelligent Model will build to predict oil spilling. In this survey paper, related work will be discussed to enhance that work.
Volume: 22
Issue: 1
Page: 580-589
Publish at: 2021-04-01

Cloud radio access network fronthaul solution using optimized dynamic bandwidth allocation algorithm

10.11591/ijece.v11i2.pp1395-1404
Ebude Carine Awasume , Stephen Musyoki , Vitalice Kalecha Oduol
In order to address the challenges that have come with the exploding demand for higher speed, traffic growth and mobile wireless devices, Mobile network operators have decided to move to the notion of small cells based on cloud radio access network. The merits of cloud based RAN includes the ease of infrastructure deployment and network management as well as the fact that its performance are optimized and it is cost effective the merits of cloud based RAN includes the ease of infrastructure deployment and network management as well as the fact that its performance are optimized and it is cost effective. Notwithstanding, cloud radio access network comes with so many strict requirements to be fulfilled for its fronthaul network. In this paper, we have presented these requirements for a 5G fronthaul network. Particular interest on the time division multiplex passive optical network’s challenge of latency was treated by proposing an optimized version of the round robin dynamic bandwidth allocation algorithm. Results obtained show an improvement in the latency of the original algorithm which meets the fronthaul requirement. Other test parameters like jitter and BER were also improved by our proposed optimized algorithm.
Volume: 11
Issue: 2
Page: 1395-1404
Publish at: 2021-04-01

Speed control of an SPMSM using a tracking differentiator-PID controller scheme with a genetic algorithm

10.11591/ijece.v11i2.pp1728-1741
Noor Hameed Hadi , Ibraheem Kasim Ibraheem
In this paper, a tracking differentiator-proportional integral and derivative (TD-PID) control scheme is proposed to control the speed of a surface mount permanent magnet synchronous motor (SPMSM). The TD is used to generate the necessary transient profile for both the reference and the output speed, which are compared with each other to produce the error signals that feed into the PID controller. In addition to the TD unit parameters, the PID controller’s parameters are tuned to achieve the optimum new multi-objective performance index, comprised of the integral of the time absolute error (ITAE), the absolute square of the control energy signal (USQR), and the absolute value of the control energy signal (UABS) and utilizing a genetic algorithm (GA). A nonlinear model of the SPMSM is considered in the design and the performance of the proposed TD-PID scheme was validated by comparing its performance with that of a traditional PI controller in a MATLAB environment. Different case studies were tested to show the effectiveness of the proposed scheme, results including peak overshoot, energy consumption, control signal chatter, and 30% improvement in the OPI, with variable reference speeds, load torque, and parameters uncertainties. Illustrate the proposed scheme's success compared with PI controller.
Volume: 11
Issue: 2
Page: 1728-1741
Publish at: 2021-04-01

Geometric control of quadrotor UAVs using integral backstepping

10.11591/ijeecs.v22.i1.pp53-61
Ali Bouchaib , Rachid Taleb , Ahmed Massoum , Saad Mekhilef
The traditional quadcopter control systems should deal with two common problems. Namely, the singularities related to the inverse kinematics and the ambiguity linked to the quaternion representation of the dynamic model. Moreover, the stability problem due to the system nonlinearity and high degree of coupling. This paper provides a solution to the two issues by employing a geometrical integral-backstepping control system. The integral terms were added to improve system ability to track desired trajectories. The high-level control laws are considered as a virtual control and transmitted to the low-level to track the high-level commands. The proposed control system along with the quadcopter dynamic model were expressed in the special Euclidean group SE(3). Finally, the control system robustness against mismatching parameters was studied while tracking various paths.
Volume: 22
Issue: 1
Page: 53-61
Publish at: 2021-04-01

Economic technology analysis of LTE advanced pro dual spectrum licensed and unlicensed access using discounted cash flow methods

10.11591/ijeecs.v22.i1.pp342-351
Setiyo Budiyanto , Erman Al Hakim , Fajar Rahayu
Since implementing the long term evolution (LTE) technology, the surge in data service traffic has increased, causing an increase in demand spectrum, which has resulted in gaps in capacity requirements. Wireless service providers can respond to LTE technology updates. With LTE advanced pro technology that utilizes unlicensed spectrum technology can provide solutions to increase capacity and throughput. In this study, LTE advanced pro planning by capacity method to find the number of eNodeB and using the discounted cash flow method to analyze the feasibility of the costs to be invested in the implementation of the LTE. The results of the four simulated scenarios concluded that the number of eNodeB from the IV scenario with 20 MHz bandwidth at 1800 MHz frequency and 20 MHz bandwidth at 5 GHz frequency amounted to 23 sites, with a positive NPV value of $ 271,936.96, IRR of 14.91%, and for payback period occurred in the 3rd year. Thus the fourth scenario is feasible to be implemented.
Volume: 22
Issue: 1
Page: 342-351
Publish at: 2021-04-01

Help through demonstration and automation for interactive computing systems: A survey of recent works

10.11591/ijece.v11i2.pp1549-1560
Pedro Rodrigues , Jose Luis Silva
Usability is very important however, it is still difficult to develop interactive computing systems that meet all user’s specificities. Help systems should be a way of bridging this gap. This paper presents a general survey on recent works (building upon previous surveys) related to improving applications’ help through demonstration and automation and, identifies which technologies are acting as enablers. The main contributions are, identifying (i) which are the recent existing solutions; (ii) which aspects must be investigated further; and (iii) which are the main difficulties that are preventing a faster progress.
Volume: 11
Issue: 2
Page: 1549-1560
Publish at: 2021-04-01

A 5G mm-wave compact voltage-controlled oscillator in 0.25 µm pHEMT technology

10.11591/ijece.v11i2.pp1036-1042
Abdelhafid Es-saqy , Maryam Abata , Mahmoud Mehdi , Mohammed Fattah , Said Mazer , Moulhime El Bekkali , Catherine Algani
A 5G mm-wave monolithic microwave integrated circuit (MMIC) voltage-controlled oscillator (VCO) is presented in this paper. It is designed on GaAs substrate and with 0.25 µm-pHEMT technology from UMS foundry and it is based on pHEMT varactors in order to achieve a very small chip size. A 0dBm-output power over the entire tuning range from 27.67 GHz to 28.91 GHz, a phase noise of -96.274 dBc/Hz and -116.24 dBc/Hz at 1 and 10 MHz offset frequency from the carrier respectively are obtained on simulation. A power consumption of 111 mW is obtained for a chip size of 0.268 mm2. According to our knowledge, this circuit occupies the smallest surface area compared to pHEMTs oscillators published in the literature.
Volume: 11
Issue: 2
Page: 1036-1042
Publish at: 2021-04-01

Diagnosing MERS-CoV using dempster-shafer method

10.11591/ijict.v10i1.pp19-26
Memen Akbar , Fandy Hidayat , Wenda Novayani
MERS-CoV (Middle East Respiratory Syndrome-Coronavirus) is a respiratory syndrome disease caused by the coronavirus which attacks the respiratory tract from mild to severe. MERS-CoV was first reported in Saudi Arabia; total cases of MERS-CoV have continued to increase. In Indonesia, the MERS-CoV enters through the pilgrimage of Hajj and Umrah. But not many people know about this disease and its symptoms. For this reason, an expert system was developed to diagnose MERS-CoV using the Dempster-Shafer method. The system can detect the disease from the symptoms inputted by user. The output of the system is the value of the probability of the disease, the level of the disease and the suggested. The levels of the disease are Stage 1, Stage 2, and Stage 3 where each has a different treatment based on the level of the disease. The system contains information about MERS-CoV in the form of videos and text. The system was built using the PHP programming language. The testing result shows that all system functionalities have been fulfilled. The expert validation testing had obtained at 76.7%, which prove that the system is good enough in diagnosing MERS-CoV and the results obtained from the questionnaire is at an average of 84.13% which is very good in helping users in diagnosing disease. The expert system that has been developed can help people in diagnosing the disease before consulting with a doctor.MERS-CoV (Middle East Respiratory Syndrome-Coronavirus) is arespiratory syndrome disease caused by the coronavirus which attacks therespiratory tract from mild to severe. MERS-CoV was first reported in SaudiArabia; total cases of MERS-CoV have continued to increase. In Indonesia,the MERS-CoV enters through the pilgrimage of Hajj and Umrah. But notmany people know about this disease and its symptoms. For this reason, anexpert system was developed to diagnose MERS-CoV using the DempsterShafer method. The system can detect the disease from the symptomsinputted by user. The output of the system is the value of the probability ofthe disease, the level of the disease and the suggested. The levels of thedisease are Stage 1, Stage 2, and Stage 3 where each has a different treatmentbased on the level of the disease. The system contains information aboutMERS-CoV in the form of videos and text. The system was built using thePHP programming language. The testing result shows that all systemfunctionalities have been fulfilled. The expert validation testing had obtainedat 76.7%, which prove that the system is good enough in diagnosing MERSCoV and the results obtained from the questionnaire is at an average of84.13% which is very good in helping users in diagnosing disease. Theexpert system that has been developed can help people in diagnosing thedisease before consulting with a doctor. 
Volume: 10
Issue: 1
Page: 19-26
Publish at: 2021-04-01

Enhancing the feature-based 3D deformable face recognition using hybrid PCA-NN

10.11591/ijeecs.v22.i1.pp215-221
Cahyo Darujati , Supeno Mardi Susiki Nugroho , Deny Kurniawan , Mochamad Hariadi
Facial recognition is one of the most important advancements in image processing. An important job is to build an automated framework with the same human capacity’s for recognizing face. The face is a complex 3D graphical model, and constructing a computational model is a challenging task. This paper aims at a facial detection technique focused on the coding and decoding of the facial feature object theory approach to data. One of the most natural and common principal component analysis (PCA) method. This approach transforms the face features into a minimal set of basic attributes, peculiarities, which are the critical components of the original learning image collection (or the training package). The proposed technique is a combination of the PCA system and the identification of components using the neural network (NN) feed-forward propagation method. This experiment proves that recognition of deformed 3D face is doable. By taking into account almost all forms of feature extraction and engineering, the NN yields a recognition score of 95%.
Volume: 22
Issue: 1
Page: 215-221
Publish at: 2021-04-01

IoT and transparent solar cell based automated green house monitoring system for tomato plant cultivation

10.11591/ijeecs.v22.i1.pp18-27
Yus Rama Denny , Endi Permata , Adhitya Trenggono , Vaka Gustiono
This study aimed to develop and test the feasibility of a smart greenhouse prototype media that is used as a planting medium with an automatic watering system. The method in this study was research and development using the waterfall model. In order to test the feasibility, the prototype was validated with material expert validators, media expert, and farmers. The questionnaire instrument was compiled based on Walker and Hess instrument. The results of the research found are as follows: the results of feasibility research by media experts has an average score of 4.35 with the category "very feasible", assessment by experts the material has an average score of 4.4 with the category "very feasible", and the assessment of the user has an average score of 4.06 with "feasible". The purposed controlled system of smart greenhouse and as a media for farmers was validated. Our results demonstrated that the smart greenhouse is suitable media to help farmers cultivating the tomatoes plant.
Volume: 22
Issue: 1
Page: 18-27
Publish at: 2021-04-01

Cache coherency controller for MESI protocol based on FPGA

10.11591/ijece.v11i2.pp1043-1052
Mays K. Faeq , Safaa S. Omran
In modern techniques of building processors, manufactures using more than one processor in the integrated circuit (chip) and each processor called a core. The new chips of processors called a multi-core processor. This new design makes the processors to work simultanously for more than one job or all the cores working in parallel for the same job. All cores are similar in their design, and each core has its own cache memory, while all cores shares the same main memory. So if one core requestes a block of data from main memory to its cache, there should be a protocol to declare the situation of this block in the main memory and other cores.This is called the cache coherency or cache consistency of multi-core. In this paper a special circuit is designed using very high speed integrated circuit hardware description language (VHDL) coding and implemented using ISE Xilinx software. The protocol used in this design is the modified, exclusive, shared and invalid (MESI) protocol. Test results were taken by using test bench, and showed all the states of the protocol are working correctly.
Volume: 11
Issue: 2
Page: 1043-1052
Publish at: 2021-04-01

High speed modified carry save adder using a structure of multiplexers

10.11591/ijece.v11i2.pp1591-1598
Ahmed Salah Hameed , Marwa Jawad Kathem
Adders are the heart of data path circuits for any processor in digital computer and signal processing systems. Growth in technology keeps supporting efficient design of binary adders for high speed applications. In this paper, a fast and area-efficient modified carry save adder (CSA) is presented. A multiplexer based design of full adder is proposed to implement the structure of the CSA. The proposed design of full adder is employed in designing all stages of traditional CSA. By modifying the design of full adder in CSA, the complexity and area of the design can be reduced, resulting in reduced delay time. The VHDL implementations of CSA adders including (the proposed version, traditional CSA, and modified CSAs presented in literature) are simulated using Quartus II synthesis software tool with the altera FPGA EP2C5T144C6 device (Cyclone II). Simulation results of 64-bit adder designs demonstrate the average improvement of 17.75%, 1.60%, and 8.81% respectively for the worst case time, thermal power dissipation and number of FPGA logic elements.
Volume: 11
Issue: 2
Page: 1591-1598
Publish at: 2021-04-01

Securing sensor data transmission with ethernet elliptic curve cryptography secure socket layer on STM32F103 device

10.11591/ijeecs.v22.i1.pp507-515
Seniman Seniman , Baihaqi Siregar , Rani Masyithah Pelle , Fahmi Fahmi
Currently there is no method, feature, or ability in securing data transmission in microcontroller systems and applications with client-server scheme communication, while major modern computer systems using secure socket layer (SSL) for establishing secure communication. However, ESP espressif based microcontroller has supported SSL communication to secure data transmission, but only works on the Wi-Fi network. A single-board computer based embedded system has fully supported SSL communication, but it costs a very high price. On the other hand, STM32F103 microcontrollers with a very affordable price even cheaper than the Arduino board has the opportunity to build secure data communication using SSL protocol based on MbedTLS library. In addition to wiznet W5100/W5500 ethernet shield, an STM32F103 SSL client device has been successfully built in this study. The SSL client device supports ECDHE ECDHA AES128 CBC SHA256 SSL cipher suite. The Apache web server must also be configured to support this cipher suite by generating OpenSSL ECC (elliptic curve cryptography) certificate. The system was tested with the LM35 analog temperature sensor, and as a result, the STM32F103 SSL client has successfully secured the data transmission to the Apache SSL web server. The communication time was 3 seconds for the first connection and 42 ms for the next data transmission.
Volume: 22
Issue: 1
Page: 507-515
Publish at: 2021-04-01
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