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31,456 Article Results

Robust features extraction for general fish classification

10.11591/ijece.v9i6.pp5192-5204
Mutasem K. Alsmadi , Mohammed Tayfour , Raed A. Alkhasawneh , Usama Badawi , Ibrahim Almarashdeh , Firas Haddad
Image recognition process could be plagued by many problems including noise, overlap, distortion, errors in the outcomes of segmentation, and impediment of objects within the image. Based on feature selection and combination theory between major extracted features, this study attempts to establish a system that could recognize fish object within the image utilizing texture, anchor points, and statistical measurements. Then, a generic fish classification is executed with the application of an innovative classification evaluation through a meta-heuristic algorithm known as Memetic Algorithm (Genetic Algorithm with Simulated Annealing) with back-propagation algorithm (MA-B Classifier). Here, images of dangerous and non-dangerous fish are recognized. Images of dangerous fish are further recognized as Predatory or Poison fish family, whereas families of non-dangerous fish are classified into garden and food family.  A total of 24 fish families were used in testing the proposed prototype, whereby each family encompasses different number of species. The process of classification was successfully undertaken by the proposed prototype, whereby 400 distinct fish images were used in the experimental tests. Of these fish images, 250 were used for training phase while 150 were used for testing phase. The back-propagation algorithm and the proposed MA-B Classifier produced a general accuracy recognition rate of 82.25 and 90% respectively.
Volume: 9
Issue: 6
Page: 5192-5204
Publish at: 2019-12-01

A novel region selection approach of SVPWM for a three-level NPC inverter used in electric vehicle

10.11591/ijpeds.v10.i4.pp1705-1713
Debanjan Roy , Sanatan Kumar , Madhu Singh
This paper confers an investigation of a space vector modulation based control strategy of induction motor using a three-level inverter for electric vehicle application. The proposed controller uses a simple v/f control with a novel SVPWM technique. A new method for region selection of SVPWM for a multilevel inverter is implemented for the closed-loop system. Previously the region selection procedure was not considered by most of the researcher in the literature for developing the PWM algorithm. This approach is based on some algebraic equations. The remarkable point here is that it is identical to all the remaining sectors. Hence calculation complexity reduces by making it a simpler implementation. This method can be applied to any number of levels. The potency of the proposed controller is validated through the MATLAB/SIMULINK environment. The performance of the overall system is inspected through transient and steady-state analysis. The neutral point balance of the 3L NPC inverter is established by adopting proper switching sequences.
Volume: 10
Issue: 4
Page: 1705-1713
Publish at: 2019-12-01

An automatic lexicon generation for indonesian news sentiment analysis: a case on governor elections in Indonesia

10.11591/ijeecs.v16.i3.pp1555-1561
Media A Ayu , Sony Surya Wijaya , Teddy Mantoro
Sentiment analysis has been popularly used in analyzing data from the internet.  One of the techniques used is lexicon based sentiment analysis.  Generating lexicon is not an easy process, and lexicon in Bahasa Indonesia is rarely available.  This paper proposes an automatic lexicon generation in Bahasa Indonesia for sentiment analysis purpose.  Experiments were performed using the generated lexicon for doing sentiment analysis on Indonesian political news about the 2018 governor election in three provinces in Indonesia. The conducted experiments show promising results where it can predict the candidate’s rank, the election winner, and the percentage of votes for each candidate with better accuracy than the previous work which used manually generated lexicon.
Volume: 16
Issue: 3
Page: 1555-1561
Publish at: 2019-12-01

Security assessment framework for educational ERP systems

10.11591/ijece.v9i6.pp5570-5585
Hafsa Ashraf , Mamdouh Alenezi , Muhammad Nadeem , Yasir Javid
The educational ERP systems have vulnerabilities at the different layers such as version-specific vulnerabilities, configuration level vulnerabilities and vulnerabilities of the underlying infrastructure. This research has identified security vulnerabilities in an educational ERP system with the help of automated tools; penetration testing tool and public vulnerability repositories (CVE, CCE) at all layers. The identified vulnerabilities are analyzed for any false positives and then clustered with mitigation techniques, available publicly in security vulnerability solution repository like CCE and CWE. These mitigation techniques are mapped over reported vulnerabilities using mapping algorithms. Security vulnerabilities are then prioritized based on the Common Vulnerability Scoring System (CVSS). Finally, open standards-based vulnerability mitigation recommendations are discussed.
Volume: 9
Issue: 6
Page: 5570-5585
Publish at: 2019-12-01

Аutomаtіϲ generаtіon control bаѕeԁ wһale орtimіzatіon algorithm

10.11591/ijece.v9i6.pp4516-4523
Wisam Najm Al-Din Abed , Omar A. Imran , Ibrahim S. Fatah
In the designing and operation of interconnected power systems, automatic-generation-control (AGC) represent an important topic. AGC is responsible for maintaining the balance between generation side and load side via controlling the frequency and active power interchange. A new metaheuristic strategy is proposed in this work for optimal controller tuning in AGC system. Ԝһale Орtimіzatіоn Αlgorithm(WOA) is proposed for optimal tuning of reset integral controller. T he proposed strategy is used for optimal AGC in two-areas interconnected-power system. The proposed tuning strategy is compared with other new metaheuristic optimization strategy termed as Harmony Search (HS). The two-area interconnected power system are simulated based MATLAB-toolbox. From results obtained, it is obvious that, the system transient and steady-state behavior are enhanced greatly under the same conditions. This is due to the use of the proposed optimization technique.  The proposed technique has an advanced and superior feature like, local optimum avoiding, fast convergence ability, and lower search agents and iteration are required. All mentioned features, make this strategy optimal for various optimization problems.
Volume: 9
Issue: 6
Page: 4516-4523
Publish at: 2019-12-01

Performance degradation assessment and VM placement policy in cloud

10.11591/ijece.v9i6.pp4961-4969
Susmita J. A. Nair , T. R. Gopalakrishnan Nair
In virtualized servers, with live migration technique pages are copied from one physical machine to another while the virtual machine (VM) is running. The dynamic migration of virtual machines encumbers the data center which in turn reduces the performance of applications running on that particular physical machine. A considerable number of studies have been carried out in the area of performance evaluation during live VM migration.  However, all the aspects related to the migration process have not been examined for the performance assessment. In this paper, we propose a novel approach to evaluate the performance during migration process in different types of coupled machine environment. It is presented here that the state of art VM migration technology requires further improvement in realizing effective migration by monitoring comprehensive performance value. We introduced the parameter, θ, to compare performance value which can be used for controlling and halting unsuccessful migration and save significant amount of time in migration operation.  Our model is capable of analyzing real time scenario of cloud performance assessment targeting VM migration strategies. It also offers the possibility of further expanding to universal models for analyzing the performance variations that occurs as a result of VM migration.
Volume: 9
Issue: 6
Page: 4961-4969
Publish at: 2019-12-01

Design and implementation of an automatically aligned solar tracking system

10.11591/ijpeds.v10.i4.pp2055-2064
Anees Abu Sneineh , Wael A. Salah
This paper presents the design and implementation of a closed-loop solar tracker system. The demand for clean energy sources has increased along with the rising demand for electrical energy and the increasing amount of environment pollution triggered by fuel consumption. Among these sources, solar energy is considered the most feasible given its wide availability and easy operation in different environments. The main purpose of this study is to maximize the generated photovoltaic power and reduce CO2 emissions by designing an efficient and low-cost solar tracking system. An aligned closed-loop solar tracker is designed and constructed to achieve the best accuracy. The proposed system shows more freedom in its movement to overcome the problems associated with the tilt of the frame-holder. A PIC microcontroller based on the Flowcode programming language is used, the position feedback is detected by using a photo-sensor, and the H-Bridge driver is used to control two DC motors. According to the experimental results, the proposed system shows significant improvements in efficiency compared with stationary solar tracking systems.
Volume: 10
Issue: 4
Page: 2055-2064
Publish at: 2019-12-01

DC-AC power inverter controlled analogically with zero hysteresis

10.11591/ijece.v9i6.pp4767-4776
Fredy E. Hoyos Velasco , Carlos I. Hoyos Velasco , John E. Candelo-Becerra
This paper presents the design and experimental validation of a DC-AC power inverter, controlled analogically with zero hysteresis. A control circuit was built using analog electronics components, and optocoupler devices are used to couple the control module with the power stage. The design of DC-AC inverter with electronics circuit and implementation are shown in detail.  Experimental results show the effectiveness of control technique and implementation, leading to a robust system concerning load disturbances. The developed inverter offers the possibility of generating regulated output voltages of different signal types, both DC and AC, variable in frequency and in amplitude, useful for feeding a load with various AC signals.
Volume: 9
Issue: 6
Page: 4767-4776
Publish at: 2019-12-01

Hybrid concentrated photovoltaic thermal technology for domestic water heating

10.11591/ijeecs.v16.i3.pp1136-1143
M. K.Panjwani , S. X. Yang , F. Xiao , K. H. Mangi , R. M. Larik , F. H. Mangi , M. Menghwar , J. Ansari , K. H. Ali
There is an increasing reliance on renewable energy especially Solar Energy as the fossils are on the way to depletion.It offers an environmental friendly solution with an affordable comparative paradigm. Solar photovoltaic-thermal collectors have remained of the particular interest because of their higher overall efficiencies. Most of its applications related with solar hybrid PVT systems focuses more on electrical output rather than thermal output, and the contacting fluid is allowed to act as a coolant to assure that the solar cell operates in the ranges specified by the manufacturer to guarantee higher electrical efficiency. This ultimately allows fluid to retain higher temperature that could be utilized for meeting the heating demand of any residential household. First, the PVT analyses are performed over a system comprising of Fresnel-based Solar Module to allow higher irradiance to fall for relative higher conversion of efficiency and to achieve higher temperature ranges in the contacting fluid (water). The electrical parameters are compared, and a significant increase in the power ranges is concluded. Secondly, a simulated thermal structure of the heating tank is presented that utilises the heated water from the PVT system in meeting the heating demand of a residential household. When accounting all the electrical parameters, approximately 10% increase is noticed in power produced, and sufficient energy used for the traditional heating of water is retained.
Volume: 16
Issue: 3
Page: 1136-1143
Publish at: 2019-12-01

Frequent itemset mining: technique to improve eclat based algorithm

10.11591/ijece.v9i6.pp5471-5478
Mahadi Man , Masita Abdul Jalil
In frequent itemset mining, the main challenge is to discover relationships between data in a transactional database or relational database. Various algorithms have been introduced to process frequent itemset. Eclat based algorithms are one of the prominent algorithm used for frequent itemset mining. Various researches have been conducted based on Eclat based algorithm such as Tidset, dEclat, Sortdiffset and Postdiffset. The algorithm has been improvised along the time. However, the utilization of physical memory and processing time become the main problem in this process. This paper reviews and presents a comparison of various Eclat based algorithms for frequent itemset mining and propose an enhancement technique of Eclat based algorithm to reduce processing time and memory usage. The experimental result shows some improvement in processing time and memory utilization in frequent itemset mining.
Volume: 9
Issue: 6
Page: 5471-5478
Publish at: 2019-12-01

Developing the indonesian government enterprise architecture framework appropriate for Indonesian government agencies

10.11591/ijict.v8i3.pp152-161
Asbartanov Lase , Benny Ranti
This research was conducted to develop the Indonesian Government Enterprise Architecture (IGEA) framework which is suitable for Indonesian government agencies. Due to their complexity and expensive implementation cost, existing EA frameworks such as TOGAF and Zachman have so far not been the choice for building GEA by some countries including Australia and New Zealand. Those countries have built their own GEA namely Australia’s AGA and New Zealand’s GEA-NZ, respectively. Learning from this experience, the authors did a research to build Indonesia’s GEA or IGEA. This paper explains the research process which starts from mapping or comparing TOGAF, AGA, and GEA-NZ frameworks to get the underlying foundation for building GEA, analyzing framework artifacts, to building IGEA by adding specific Indonesian regulations and policies such as RPJMN and Nawacita. This IGEA framework is expected to become a reference for developing EA not only at institutional level but also the most important thing at national or cross institutional level, in order to increase the effectiveness of government IT spending.
Volume: 8
Issue: 3
Page: 152-161
Publish at: 2019-12-01

Detection of partial discharge acoustic emission in power transformer

10.11591/ijece.v9i6.pp4573-4579
Yomna Omran Shaker
Partial discharge is one the most important factor that leads to deteroration and failure of the power transformer transformer. Acoustic emission detection is effective method to evaluate the health index of the power transformer.      Using acoustic emission (AE) sensors for partial discharge (PD) measurement is considered as one of the most promising techniques to detect and localize PD activities inside the transformer tank. On the other hand, AE waves suffer from high attenuation and reflections while traveling from the PD source to the AE sensor. The modeling of the AE wave can help to understand the behavior of the AE PD signal during its travel. In this paper, the AE PD signal is assumed to be composed of different frequencies. This work aims to investigate the influence of the frequency value on the attenuation and arrival time of the acoustic wave.
Volume: 9
Issue: 6
Page: 4573-4579
Publish at: 2019-12-01

Modeling of 185W of mono-crystalline solar panel using MATLAB/Simulink

10.11591/ijpeds.v10.i4.pp2005-2012
Siti Amely Jumaat , Ong Wei Liang , Mohd Noor Abdullah , Nur Hanis Radzi , Rohaiza Hamdan , Suriana Salimin
This paper presents a modeling of 185W Mono-crystalline Solar Panel Using Matlab/Simulink approach. The objective of this project to carried out the efficiency and performance of Solar Panel. The type of solar panel in this project is a mono-crystalline by the SC Origin Company. A temperature and irradiance are the input parameters of the system. The outputs of the system are voltage, current and power. In addition, the data of temperature and irradiance from August to December 2017 by RETScreen Website. This data are used as an inout for PV System and the curve of I-V and P-V as the output. The data are collected at location 1.86° N, 103.09° E which is in Bandar Penggaram, Johor. The output result of I-V and P-V will be used to compare with the reference.
Volume: 10
Issue: 4
Page: 2005-2012
Publish at: 2019-12-01

Node activity based trust and reputation estimation approach for secure and QoS routing in MANET

10.11591/ijece.v9i6.pp5340-5350
Raghavendar Raju L , C R K Reddy
Achieving safe and secure communication in MANETs is a key challenge due to its dynamic nature. A number of security studies disclose that reputation management systems are able to be effectual with less overhead. The reputation of a node is calculated by using automated assessment algorithms depend on predefined trust scheme. This paper proposes a Node Activity-based Trust and Reputation estimation (NA-TRE) approach for the security and QoS routing in MANET. NA-TRE aims to find trust estimation and reputation of a node. The NA-TRE approach monitors the activity changes, packet forwarding or dropping in a node to find the status of the node. The various activities of a node like Normal State (NS), Resource Limitation State (RS) and Malicious State (MS) are monitored. This status of a node is helpful in computing trust and reputation. In this paper NA-TRE approach compared with existing protocols AODV, FACE and TMS to evaluate the efficiency of MANET. The experiment results show that 20% increasing of throughput, 10% decrease of overhead and end to end delay.
Volume: 9
Issue: 6
Page: 5340-5350
Publish at: 2019-12-01

Photovoltaic thermal (PVT) air collector with monofacial and bifacial solar cells: a review

10.11591/ijpeds.v10.i4.pp2021-2028
Ahmad Fudholi , Muslizainun Mustapha , Ivan Taslim , Fitrotun Aliyah , Arthur Gani Koto , Kamaruzzaman Sopian
Photovoltaic thermal (PVT) collectors directly convert solar radiation into electrical and thermal energy. A PVT collector combines the functions of a PV panel and a flat plate solar collector. The development of PVT air collectors is a very promising research area. At present, PVT air collectors are used in solar drying and solar air heaters. On the basis of existing literature, most PVT air collectors were built by using monofacial PV modules. The bifacial PV modules had two active surfaces that could capture solar radiation with its front and rear surfaces. Additional sunlight absorption through both surfaces resulted in an enhanced electrical power generation compared with the conventional monofacial PV. Therefore, bifacial PVT was considered to be useful and attractive due to its potential of enhancing overall system performances, including energy and exergy efficiencies. Findings of this review indicated that PVT air collector with bifacial solar cell produced a larger amount of electrical energy, which was approximately 40% higher than a monofacial PVT. The energy and exergy efficiencies of PVT air collector with monofacial solar cells range from 27% to 94% and from 4% to 18%, respectively. For bifacial PVT, the energy and exergy efficiencies of PVT air collector range from 28% to 67% and from 8.2% to 8.4%, respectively.
Volume: 10
Issue: 4
Page: 2021-2028
Publish at: 2019-12-01
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