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29,922 Article Results

Fixed scattering section length with variable scattering section dispersion based optical fibers for polarization mode dispersion penalties

10.11591/ijeecs.v21.i3.pp1540-1547
Mahmoud M. A. Eid , Ahmed Nabih Zaki Rashed
This study has clarified the fixed scattering section length with variable scattering section dispersion based optical fibers for polarization mode dispersion penalties at high data rates. The max. signal power/min. noise power is simulated against time after fiber length of 500 km with various scattering section dispersion. The overall total light power is simulated after fiber length of 500 km with various scattering section dispersion. In addition to the overall total electrical power is clarified through APD receiver at fiber length of 500 km with various scattering section dispersion. Eye diagram analyzer for signal quality is also simulated through APD receiver at fiber length of 500 km with various scattering section dispersion. The max. Q Factor, electrical signal power after APD receiver variations against scattering section dispersion variations for various data rates.
Volume: 21
Issue: 3
Page: 1540-1547
Publish at: 2021-03-01

Extracting numerical data from unstructured Arabic texts (ENAT)

10.11591/ijeecs.v21.i3.pp1759-1770
Abeer K. AL-Mashhadany , Dalal N. Hamood , Ahmed T. Sadiq Al-Obaidi , Waleed K. Al-Mashhsdany
Unstructured data becomes challenges because in recent years have observed the ability to gather a massive amount of data from annotated documents. This paper interested with Arabic unstructured text analysis. Manipulating unstructured text and converting it into a form understandable by computer is a high-level aim. An important step to achieve this aim is to understand numerical phrases. This paper aims to extract numerical data from Arabic unstructured text in general. This work attempts to recognize numerical characters phrases, analyze them and then convert them into integer values. The inference engine is based on the Arabic linguistic and morphological rules. The applied method encompasses rules of numerical nouns with Arabic morphological rules, in order to achieve high accurate extraction method. Arithmetic operations are applied to convert the numerical phrase into integer value. The proper operation is determined depending on linguistic and morphological rules. It will be shown that applying Arabic linguistic rules together with arithmetic operations succeeded in extracting numerical data from Arabic unstructured text with high accuracy reaches to 100%.
Volume: 21
Issue: 3
Page: 1759-1770
Publish at: 2021-03-01

Supplier side optimal bidding strategy for electricity market using bacterial foraging optimization algorithm

10.11591/ijape.v10.i1.pp58-67
Uday Sriram L , Siva Nagaraju S , Chandram Karri
In this article, bacterial foraging optimization (BFO) algorithm is developed for single side optimal bidding strategy in an electricity market. Optimal bidding strategy is one of the important functions in the electricity market along with forecasting of the electricity price and the profit based unit commitment. The prime objective of generating company (Genco) is to maximize their profit when they participate in the bidding pro-cess. The BFO algorithm has been used to maximize the probability density function (pdf). In the second stage the BFO algorithm is again applied to maximize the profit of the suppliers. The proposed algorithm is developed in MATLAB (Version, 2019) and tested on standard test case available in the literature. Also, the simulation results are presented and compared. It is noticed that the proposed method yields the best results in terms of profit.
Volume: 10
Issue: 1
Page: 58-67
Publish at: 2021-03-01

State of charge estimation by using extended Kalman filter based on improved open circuit voltage model

10.11591/ijape.v10.i1.pp1-10
Maamar Souaihia , Bachir Belmadani , Rachid Taleb , Kamel Tounsi
This paper focuses on the state of charge estimation (SOC) for battery Li-ion. By modeling a battery based on the equivalent circuit model, the extended Kalman filter approach can be applied to estimate the battery SOC. An electrical battery model is developed in Matlab, Where the structure of the model is detailed by equations and blocks. The battery model has been validated from the experiment results. The comparison shows a good agreement in predicting the voltage, SOC estimation and the model performs better in SOC estimation.
Volume: 10
Issue: 1
Page: 1-10
Publish at: 2021-03-01

The influence of sorogan method in learning history to increase historical understanding and historical awareness

10.11591/ijere.v10i1.20972
Muhammad Rijal Fadli , Ajat Sudrajat , Aman Aman , Kian Amboro
The purpose of this study was to examine the influence of the sorogan method in history learning to improve students' historical understanding and historical awareness. The research method used a quasi-experimental nonequivalent control group design, and the sampling technique used a cluster sampling with a sample size of 96 students. Collecting data through observation, interviews, and tests of historical understanding and awareness. Meanwhile, data analysis to determine the effect and differences of the sorogan method to increase understanding and historical awareness using the independent sample t-test and N-gain score test. The results showed that there were a significant influence and difference between the two groups, namely the experimental and control classes based on the results of the independent sample t-test, the hypothesis H0 was rejected with a significance value of 0.000<0.05, further strengthened by the results of the N-gain score test which was included in the criteria low and medium. This means that there is an influence and increase from the implementation of the sorogan method on historical understanding and awareness and getting a positive response from teachers and students, because the sorogan method is student-centered, and the teacher acts as tutorship/mentorship.
Volume: 10
Issue: 1
Page: 300-307
Publish at: 2021-03-01

Effect of service quality and motivation on the consumption behavior of students in the academic services

10.11591/ijere.v10i1.20794
Kuswanto Kuswanto , Irzal Anderson
This study aimed to determine the effect of service quality and motivation to the consumption behavior of students in utilizing academic services. This research involved 87 students of Economic Education Study Program in University of Jambi, Indonesia. The data were analyzed using structural equation modeling with partial least squares technique (SEM-PLS). Student consumption behavior is an illustration of the level of satisfaction in utilizing academic services provided by universities. Satisfaction with academic services is a measure of the success of higher education performance in providing education. A good indicator of consumer behavior variables, namely making the University of Jambi academic services the best choice and choosing them as institutions of higher education to meet learning needs on an ongoing basis. The quality of academic services is shown by indicators of the reliability of officers in providing academic services, accuracy in the delivery of information, responsiveness in responding to complaints and student requests and harmonization of service relationships between officers and students. While consumption motivation is indicated by an indicator of trust in the services consumed it will facilitate the completion of academic affairs and the existence of attractive offers from higher education institutions. The quality of academic services has a significant effect on consumer behavior of students. Moreover, the consumption motivation variable is proven to be a significant mediator on the effect of service quality on student’s consumption behavior.
Volume: 10
Issue: 1
Page: 86-96
Publish at: 2021-03-01

Expert system for heart disease based on electrocardiogram data using certainty factor with multiple rule

10.11591/ijai.v10.i1.pp43-50
Sumiati Sumiati , Hoga Saragih , Titik Abdul Rahman , Agung Triayudi
Limited public health services in remote areas, where the lack of transportation infrastructure, facilities, communication facilities and minimal medical personnel, especially for areas with underdeveloped, foremost, and regular (3T) status. The limitation of medical personnel is one of the factors for the high mortality rate of heart disease. On the other hand, the development of information technology, especially in the field of computing, is very fast in the era of the industrial revolution 4.0, but not yet used optimally, especially in the health sector. This study aims to develop a system or software that can replace a doctor for the process of identifying heart defects based on an expert system. Expert system developed with the certainty factor with multiple rule approach. System testing is carried out from the results of the system validity with experts, so that the system test results produce a certainty factor value for a normal heart of 0.95 and an accuracy level of 95%, while the certainty factor (CF) value for an abnormal heart is 0.99 and produces an accuracy rate of 99%.
Volume: 10
Issue: 1
Page: 43-50
Publish at: 2021-03-01

Implementation effects of economics and market operations based model for traditionally integrated power systems

10.11591/ijeecs.v21.i3.pp1247-1255
Youssef Mobarak , Nithiyananthan Kannan , Fahd Alharbi , Faisal Albatati
The main objective of this paper is to introduce power system economic operations in traditionally integrated power systems and market operations in deregulated power systems and study its effects. The power system economic operation is mathematically treated as an optimization problem. Also, a function of economic operation is to minimize generation cost, transmission losses, and so on, subject to power system operation constraints. In this paper, we start from generation cost formulations and introduce traditional economic dispatch model, optimal power flow model, and unit commitment model. With the deregulation of the power industry, integrated power system is unbundled to generation, transmission, and distribution. Electricity is traded in the wholesale market. Small customers purchase energy from electricity retailers through the retail market. The electricity market is operated for energy trading while satisfying power system operation requirements. Electricity market is mathematically modelled as an optimization problem that is subject to power system operation constraints and market operation constraints.
Volume: 21
Issue: 3
Page: 1247-1255
Publish at: 2021-03-01

A low-cost IoT-based auscultation training device

10.11591/ijeecs.v21.i3.pp1356-1363
Heri Andrianto Andrianto , Daniel Perdana Sutanto , Yunus Adhy Prasetyo
Auscultation training devices are needed by teachers and students in health schools to practice auscultation techniques. In this paper, a low-cost IoT-based auscultation training device has been developed using NodeMCU, four proximity sensors, metal as a stethoscope, a switch, an android smartphone, an earphone, and a phantom doll. The message queuing telemetry transport (MQTT) protocol has been used for data communication between NodeMCU and smartphones, therefore an auscultation training hardware can be used by many students who have auscultation training application on their smartphones that subscribe to topics. The results showed that an auscultation training device was able to detect a stethoscope. Auscultation training application on a smartphone successfully plays normal and abnormal breathing sounds based on subscribed topics. With a production cost of less than 15 USD, we offer an inexpensive IoT-based auscultation training device. 
Volume: 21
Issue: 3
Page: 1356-1363
Publish at: 2021-03-01

Performance analysis of power generation by wood and woody biomass gasification in a downdraft gasifier

10.11591/ijape.v10.i1.pp80-88
Sahar Safarian , Runar Unnthorsson , Christiaan Richter
An equilibrium simulation model was developed by applying Aspen Plus to evaluate the performance of 28 wood and woody biomass (W&WB) gasification in a downdraft gasifier integrated with power production unit. The developed simulation model does not focus the gasification process as a closed box, it considers important processes in gasification like drying, pyrolysis, combustion, gasification and integrated with power production plant (combustion chamber plus gas turbine). The results for the 28 W&WB alternatives show that the net power produced from 1-ton feedstock entering to the gasification system is between the interval [0-400 kW/ton] and among them, gasification system derived from Tamarack bark biomass significantly outranks all other systems by producing 363 kW/ton, owing to the favorable results obtained in the performance analysis. Moreover, effect of various operating parameters such as gasification temperature and air to fuel ratio (AFR) on the system performance was carried out. Finally, the developed model is applied as an effective tool to assess the impact of so many biomasses and operating parameters on output power.
Volume: 10
Issue: 1
Page: 80-88
Publish at: 2021-03-01

Investigation of 22 kV silane cure TR-EPR cable

10.11591/ijape.v10.i1.pp41-47
Fernando Agustin , Akhtar Kalam , Aladin Zayegh
EPR-insulated cables for distribution power network are not commonly used in Australia. This is due to the higher DDF of common EPR cables when compared with XLPE that contributes to the power loss and economics in transmitting electricity. This led to the development of EPR called TR-EPR with significantly lower DDF and uses silane curing process to address concerns about cost-effectiveness. The thermal behavior of low DDF silane cure TR-EPR is investigated for 30 months of exposure to the maximum operating temperature of material. The physical changes in the samples throughout the long-term aging are examined to create an opportunity to model the expected life cycle of TR-EPR cable under thermal stress. The cross-linking characteristics of TR-EPR cable are also examined by ambient curing that simulates the storage condition for unused cable and by cable heating process that simulates the condition when the cable is energized. The results are tabulated for a better understanding of the time for the material to cross-link at various conditions. The improved partial discharge values after cross-linking are also presented.
Volume: 10
Issue: 1
Page: 41-47
Publish at: 2021-03-01

Smart power grid vulnerability analysis in composite system through power grid modelling

10.11591/ijape.v10.i1.pp11-20
Shouvik kumar Samanta , Chandan kumar Chanda
A though the number of traditional literature reviews most of the researchers in this area have concluded that modern intelligent electric network a referred standard new model which is considering for proposed power flow model analysis of smart power grid vulnerability through composite network. By the theorem of max-flow and complex power network theorems that are represented the advance vulnerability indices for pick out endangered lines of the smart grid network. In other hand, the power flow model and existing models simulation are examined on the IEEE 39-bus test model. The results of the simulation introduced that the proposed concept of grid model, estimation and the index application are more adequate in smart grid weakness power and efficiency analysis. In this paper briefly summarize the methods and probabilities of a vulnerability index which was explained in specific in references. Therefore, it is imperative to further implement new models and new tools so as to reach the novel state and moderate the huge or massive potential shutoff
Volume: 10
Issue: 1
Page: 11-20
Publish at: 2021-03-01

Single switch Z-source/quasi Z-source DC-DC converters

10.11591/ijape.v10.i1.pp68-79
V Saravanan , M Sabitha , V Bindu , Venkatachalam K M , M. Arumugam
This paper analyzes a family of high step up single switch switched capacitor boost converters and Z-source/quasi Z-source dc-dc converters to provide high output dc voltage gain with single stage conversion having low voltage stress on active switches, capacitors, and diodes. The operating principles, parameters design guideline of these converters are presented along with simulation results. The discussed topologies in this paper are aimed to increase the conversion system reliability and efficiency with decreased cost, volume, and weight. These power converter topologies are used for various applications such as photovoltaic (PV) systems, wind energy conversion, fuel cells, uninterruptible power systems, motor drives, energy storage systems, electric vehicle and power factor correction. Simulations are carried out in MATLAB/Simulink environment.
Volume: 10
Issue: 1
Page: 68-79
Publish at: 2021-03-01

Crucial problems in arranged the lesson plan of vocational teacher

10.11591/ijere.v10i1.20604
Muhammad Nurtanto , Nur Kholifah , Alias Masek , Putu Sudira , Achmad Samsudin
This study aimed to explore the implementation of the 2013 curriculum in vocational schools, Banten in terms of the readiness and quality of the learning tools that have been prepared. A total of 957 respondents from 2017 to 2018, consisting of four cities and three districts in Banten Province were involved in the training and mentoring program, namely vocational teachers and vice-principals in the curriculum field. Data were collected using questionnaire sheets, FGD notes, and observation check dates. The data obtained are analyzed and interpreted based on the specified categories. The results showed that: 1) Teacher readiness for learning tools in the components a) Core Competencies (CC) and Basic Competencies (BC) analysis of 45.31%, b) Program mapping of 38.37%, learning plan preparation of 39.45% and c) Learning evaluation of 36.78%; 2) The quality of lesson plan (LP) the science lesson plan analysis instrument (SLPAI) based is divided into two groups. The category "Quality" in the instructional program and instructional plan aspects, and the category "Moderate" in the instructional media and assessment and others aspects; and 3) The difficulty of learning device components, including authentic assessment, use of methods, literacy approaches, and lesson planning. The implementation of training, mentoring, and supervision programs are adjusted to the experience of vocational teachers taking into account the teacher's involvement in the implementation of the curriculum, age, and school readiness.
Volume: 10
Issue: 1
Page: 345-354
Publish at: 2021-03-01

Grid integration of PMSG based wind energy conversion with battery storage system

10.11591/ijape.v10.i1.pp48-57
Venkatachalam K M, , V. Saravanan
In this paper, the design and implementation of a permanent magnet synchronous generator (PMSG) based wind energy conversion system and battery bank storages are connected to utility grid. It has phase locked loop (PLL) control strategy as it provides for control single-phase grid connected inverter with constant dc-link voltage. The dc-link is interfaced to a permanent magnet synchronous generator through diode bridge rectifier (DBR) with dc-dc boost converter, battery bank and single phase voltage source inverter (VSI). The dc-link voltage is maintained constant value of 48 V by controlling dc-dc converter with help of perturb and observe (P&O) algorithm based maximum power point tracker (MPPT). The VSI output voltage and frequency values are controlled based on grid parameters using PI controller and sinusoidal pulse width modulation (SPWM) technique. In this grid connected system is simulated and performances are analyzed through MATLAB software. The prototype experimental results are verified through 1 kW PMSG, 48 V battery bank with single phase grid connected system.
Volume: 10
Issue: 1
Page: 48-57
Publish at: 2021-03-01
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