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29,939 Article Results

Comparative studies between public and private Islamic schools in the era of globalization

10.11591/ijere.v11i1.22182
Umi Kultsum , Muhammad Abrar Parinduri , Abdul Karim
The problem of decentralization is one of the main problems in madrasa modernization and independent learning. This is due to the difficult coordination and expensive learning processes being experienced. Therefore, this study aimed to determine the impact of the educational policy implementations on madrasa, with the existence of regional autonomy in Serang and Pandeglang Regencies, Indonesia. This qualitative study involved 10 participants, which contained district madrasa heads and supervisors, institutional managers, education staff, and teachers in Serang and Pandeglang. The utilized instruments were the interview protocol and observation sheet, with the data analysis being obtained through the Huberman and Miles's technique. This included reading, meaning, and data developed within the framework of the historical and ethnographic approach analysis. The results showed that there was no difference in the curriculum between public and private Islamic schools under the local government. The advantage was also observed for regional autonomy, regarding the emergence of superior, exemplary, regular, and vocational madrasas, respectively. However, the disadvantage of this policy was the difficulty in improving the quality of madrasa institutions, funding, and education personnel. These results indicated that all parties should contribute and supervise the implementation of autonomous education, to optimize the goals of each madrasa and achieve independent learning. Explicit rules are also needed regarding the understanding of discriminatory decentralization policies, especially in madrasa and other educational institutions.
Volume: 11
Issue: 1
Page: 421-430
Publish at: 2022-03-01

Implementation of FaceNet and support vector machine in a real-time web-based timekeeping application

10.11591/ijai.v11.i1.pp388-396
Ly Quang Vu , Phan Thanh Trieu , Hoang-Sy Nguyen
This paper presents in detail how to build up and implement a real-time web-based face recognition application. The system works so that images of people are recorded and compared with the references on the database. If they match, the information about their presence will be recorded. As for the system architecture, the multi-task cascaded neural network was deployed for face detection. Followingly, for the recognizing tasks, we conducted a study to compare the accuracy level of three different face recognizing methods on three different public datasets by means of both the literature review and our simulation. From the comparison, it can be drawn that the FaceNet algorithm in-used with the support vector machine (SVM) classifier performs the best among others and is the most suitable candidate for the practical deployment. Eventually, the proposed system can deliver a highly satisfactory result, proving its potentials not only for the research but also the commercial purposes.
Volume: 11
Issue: 1
Page: 388-396
Publish at: 2022-03-01

Fast band power measurement technique in Wi-Fi systems using spectrum analyzer

10.11591/ijape.v11.i1.pp1-6
Bommalapati Malleswari , Mohan Kumar Sesharangaiah , Bhaskara Rao Sanka
Fast band power measurement technique used for measuring band power in wireless fidelity (Wi-Fi) devices. The difficulty during testing the band power is burst mode transmission takes longer time to measure. A test jig or specialized tool required is costly, which allows continuous mode of transmission for power measurement. The delivered average power by a Wi-Fi device depends upon the data rate which can also vary during time. The procedure proposed hereby developed using a spectrum analyzer to measure band power in the burst mode, in order to ensure repeatable results and optimized to enable fast measurements at low cost, less time and above 90% accurate.
Volume: 11
Issue: 1
Page: 1-6
Publish at: 2022-03-01

A review on efficiency improvement methods in organic Rankine cycle system: an exergy approach

10.11591/ijaas.v11.i1.pp1-10
Gollangi Raju , Nagamalleswara Rao Kanidarapu
Exergy, one of the handed-down energy conservation techniques, which can obtain from thermodynamic laws (first and second), will disclose the work presented within the system, the amount of irreversibility as well as what are the possible ways to reduce inefficiencies in the system. This discourse mainly highlighted various techniques and possible methods for efficiency improvement in the organic Rankine cycle (ORC). That means mainly concentrated on following key parameters like the selection of working fluid, suitable expander, the different heat sources of an evaporator, and modifications in heat exchanger based on the application of ORC system through an exergy approach for better performance, decrease energy losses, and destruction rate. This review can help to pontificate for better-summarized results that were done before and suggest some ideas for how to select an optimized parameter for better efficiency and to decrease the destruction rate in the ORC system. 
Volume: 11
Issue: 1
Page: 1-10
Publish at: 2022-03-01

The effectiveness of discrete hermite wavelet filters technique in digital image watermarking

10.11591/ijeecs.v25.i3.pp1392-1399
Areej M. Abduldaim , Asma Abdulelah Abdulrahman , Fouad Shaker Tahir
In this work, new discrete wavelets were derived Hermite polynomials for obtained discrete hermite wavelet transformation (DHWT), and their efficiency for use in image processing is demonstrated by proving the realization of important theorems. Moreover, the role of the new and proposed waveforms in their effective effect in placing the watermark with the color image is clarified, and a program was created using MATLAB software by creating a subprogram for constructing the new wavelet and proving its efficiency with an analytic image. The process is repeated using DHWT to analyze the image. The color image has been subjected to various attacks after which the watermark is retrieved from the image after comparing it with the proposed algorithm and it has proven its power faster and better than the previously suggested methods. The final conclusion shows that using new wavelets DHWT better peak signal of noise ratio (PSNR)s can be obtained and that the proposed algorithm fills in better the lack of awareness of the watermark and its strength under different attacks.
Volume: 25
Issue: 3
Page: 1392-1399
Publish at: 2022-03-01

Power quality improvement and analysis of interconnected bus system with PMU using VSM-STATCOM

10.11591/ijape.v11.i1.pp52-61
Preeti Nitin Kabra , Sudha Rani Donepudi
The traditional static synchronous compensator (STATCOM) present in the power grid to compensate instability problem will not be not able to maintain stability of the system due to fluctuations in point of common coupling (PCC) voltage and frequency variation that may result in poor synchronization of the grid. The solution for this is the improvement in conventional STATCOM to virtual synchronous machine–static synchronous compensator (VSM-STATCOM). In this paper an interconnected IEEE-14 bus system is considered for analysis with VSM-STATCOM for improvement in voltage profile on weakest bus of the system. In order to find the weakest bus, load flow analysis is carried out on the bus system using Newton Rapson method. A VSM-STATCOM is connected at that weakest bus in synchronization to the grid injecting reactive power. For the analysis a fault is introduced on any of the line and voltage profile of the weakest bus is observed with and without VSM-STATCOM. The VSM-STATCOM is also compared to a conventional control STATCOM which has no inertia module. A comparative analysis is carrier out with parameters of voltage magnitude and frequency of the weak bus taken into consideration. The magnitude and frequency parameters of conventional STATCOM and VSM-STATCOM are measured using phasor measurement units. The model is designed using MATLAB Simulink power systems library block sets with graphical user interface (GUI) environment.
Volume: 11
Issue: 1
Page: 52-61
Publish at: 2022-03-01

Fingerprint recognition based on collected images using deep learning technology

10.11591/ijai.v11.i1.pp81-88
Ali Fadhil Yaseen Althabhawee , Bashra Kadhim Oleiwi Chabor Alwawi
The fingerprint identification is the most widely used authentication system. The fingerprint uniqueness for each human being provides error-free identification. However, during the scanning process of the fingerprint, the generated image using the fingerprint scanner may differ slightly during each scan. This paper proposes an efficient matching model for fingerprint authentication using deep learning based deep convolutional neural network (CNN or ConvNet). The proposed deep CNN consists of fifteen layers and is classified into two stages. The first stage is preparation stage which includes the fingerprint images collection, augmentation and pre-processing steps, while the second stage is the features extraction and matching stage. Regarding the implantation results, the proposed system provided the best matching for the given fingerprint features. The obtained training accuracy of the proposed model is 100% for training dataset and 100% for validating dataset.
Volume: 11
Issue: 1
Page: 81-88
Publish at: 2022-03-01

A low-cost business-oriented seaport energy effective management platform

10.11591/ijape.v11.i1.pp62-90
Asimina Dimara , Dimitrios Triantafyllidis , Stelios Krinidis , Nikolaos Ntaras , Olga Koutsogianni , George Tsoukos , Athanasios Giannopoulos , Konstantinos Kitsikoudis , Dimosthenis Ioannidis , Maria Zarkadoula , Apostolos Bizakis , Stavros Antypas , Goumas Georgios , Dimitrios Tzovaras
Many seaports worldwide attempt to gain energy efficiency towards reducing their energy costs while mitigating climate change and environmental effects. In this pa- per, a low-cost business-oriented seaport energy effective management (PERFFECT) platform is introduced. PERFFECT intends to gain knowledge on fundamental port operational and business processes and evaluate them against energy efficiency and environmental footprint. Exploiting all the proposed PERFFECT applications like monitoring, evaluation, forecasting, and optimization, the energy efficiency of the op- erational infrastructure of the port’s is achieved. Port’s energy balance is estimated and used to decide the ports optimal energy usage. Moreover, the traffic volume produced by the gate check is simulated and utilized for further actions. These actions include energy savings and emission reduction recommendations. Finally, the proposed platform is evaluated against real-life data, while the experimental results present the out- come and efficiency of the system. The suggested system results in up to 82.82% light energy savings after a specific suggested action and up to 33% reduction of vehicle emissions, respectively.
Volume: 11
Issue: 1
Page: 62-90
Publish at: 2022-03-01

Demand response planning in capacity market using microgrid

10.11591/ijape.v11.i1.pp7-13
Mohammad Khadem , Mahdi Karami
Planning of the demand response has received special attention due to the cost of transmission lines development and shortage of energy resources beside the growth of demand. This research work is focused on the role of microgrid (MG) as an alternative solution for transmission system development and proposed a method for modeling of MGs in the capacity market. The results show that using of MGs leads to reduce the development costs of transmission system. Moreover, MGs cause a slight increase in the profitability of selling capacity to the consumers. These outcomes prove that continuing to grow the number and capacity of MGs in each area ultimately eliminate the inquiry of transmission network development and minimize the cost of capacity market.
Volume: 11
Issue: 1
Page: 7-13
Publish at: 2022-03-01

Implementation and study of fuzzy based KY boost converter for electric vehicle charging

10.11591/ijape.v11.i1.pp98-108
Jalla Upendar , Sangem Ravi Kumar , Sapavath Sreenu , Bogimi Sirisha
Elecetric vehicle batteries require direct current (DC) current for charging; hence the circuit alternating current (AC) is converted to DC by a battery charger. Battery charger mostly consists of a rectifier and DC-DC converter with a controller built in to serve as a protective circuit. A harmonic source load is a type of electric car charger. During the AC-DC change over method, harmonic current is introduced into the power system, affecting power quality. In this study, a charging station consisting of buck boost and a charging station consisting a KY Boost converter were simulated. To maintain output voltage of DC-DC converters constant controller is used, the controller is either PI or fuzzy logic controller. So, four models are developed and simulated which are buck-boost converter controlled by proportional-integral (PI)-controller, KY-boost converter controlled by proportional integral-controller, buck boost converter controller fuzzy logic controller and KY boost-converter controlled by fuzzy logic controller. The total harmonic distortion (THD) of the four models is compared.
Volume: 11
Issue: 1
Page: 98-108
Publish at: 2022-03-01

Analysis of switched impedance source/quasi-impedance source DC-DC converters for photovoltaic system

10.11591/ijape.v11.i1.pp14-24
Sapavath Sreenu , Jalla Upendar , Bogimi Sirisha
This paper proposes the switched impedance source converter (SZSC) or switched quasi impedance source DC-DC converter (S-qZSC) based photovoltaic (PV) grid-connected systems. To increase the voltage from low level to high level, all PV grid-connected systems need step-up DC-DC converters. This step-up factor can be increased by connecting the terminals of a traditional quasi impedance source DC-DC converter with an additional diode and a switch. In this proposed converter, the capacitor not only serves as a filter. It is, however, bound in series to the charging loops of the inductors. On the one hand, saturated inductors can trigger instability, which can be avoided. When used for dc-ac conversion, however, the modulation index of the backend H-bridge can be set to a wider range. As compared to existing Z-source-based systems, a shorter duty period results in a higher boost factor.
Volume: 11
Issue: 1
Page: 14-24
Publish at: 2022-03-01

Comprehensive analysis and design of furnace oil-based power station using ETAP

10.11591/ijape.v11.i1.pp33-51
Raheel Muzzammel , Rabia Arshad
High standards of living are linked with the availability of energy. Therefore, there is always a requirement to modify existing power generating systems or to add new systems to fulfill the increasing demands of energy. It is becoming a core issue in the South Asian region so that at least current standards of living could be maintained by controlling growing energy rates and shortening the availability of conventional sources. Furnace oil is a residue obtained in the process of distillation of crude oil in the petroleum industry. This furnace oil is applicable for power generation plants allied with the petroleum industry so that residue of oil refineries could be utilized. In this research, a furnace oil-based power plant is designed in electrical transient and analysis program (ETAP) software. Moreover, steady-state and transient analysis of the proposed design of the power plant are conducted to increase practical viability of model. Load flow is analyzed to depict the performance of the power plant model under load conditions. This model is further tested under the motor starting event to analyze the current drawn by the motor. This event helps to determine the permissible values of protective equipment installed in power plants. In the last, economic dispatch analysis is conducted to find the relative minima of generation cost of furnace oil-based power plant with respect to coal and hydel generation
Volume: 11
Issue: 1
Page: 33-51
Publish at: 2022-03-01

Undiscovered voices: Motivation and demotivation factors in learning English among Indonesian orphan students

10.11591/ijere.v11i1.21262
Zidni Ma’ruf , Bambang Widi Pratolo , Okta Widia Sari , Arlischa Ardinengtyas
This qualitative descriptive research aimed to investigate factors of motivation and demotivation in learning English among Indonesian orphan students. There were eight participants who live and study in an Indonesian orphanage. They were randomly chosen in this research. The data were mainly collected through individual semi-structured interviews and focus group discussion (FGD) sections. All interviews and FGD sections data were recorded, transcribed, analyzed, and divided into several themes and subthemes. Further, member checking was done to develop the trustworthiness of the research. The research revealed that internal and external factors were positively related to motivation and demotivation in learning English among Indonesian orphan students. Further, suggestions and policy recommendations were all offered to related parties to support and give equal educational facilities to all students since they have the same right for education.
Volume: 11
Issue: 1
Page: 441-448
Publish at: 2022-03-01

Oral participation practices in classroom among university students in Afghanistan

10.11591/ijere.v11i1.21865
Hamza Atifnigar , Hedayatullah Bawar , Malang Momand , Siti Aishah Abdul Hamid
This study aimed at exploring factors affecting classroom participation among students in the English department of Laghman University, Afghanistan. More precisely, this research discovered factors related to teachers and class-size that hinder students’ practice of oral participation in the classroom. In collecting the data, this study employed mixed-method research with concurrent design. An adapted questionnaire and a semi-structured interview have been used as the data collection instrument of this study. An online survey questionnaire was conducted with 110 respondents. In addition, a semi-structured interview was conducted with five of the respondents at the English Department of Laghman University. The data from the questionnaire was descriptively analyzed through using statistical package for social science (SPSS), and the semi-structured interview data were thematically analyzed and interpreted. The findings revealed that class-size related factor is the first influential factor in affecting oral participation among students and it is due to having large number students in a class. Teacher’s related factor is the second influential factor that affects the oral participation of students. Majority claimed that teachers’ approach, behavior, and qualification have prominent impact on their level of oral participation. Based on the finding, it can be seen that class-size related, and teachers’ factors affected oral participation of the students at the English Department of Laghman University. It is recommended that the Ministry of Higher Education of Afghanistan strive to decrease the number of students in each class and enforce teachers in implementing a student-centered learning approach while teaching.
Volume: 11
Issue: 1
Page: 409-420
Publish at: 2022-03-01

Wiki sense bag creation using multilingual word sense disambiguation

10.11591/ijai.v11.i1.pp319-326
Shreya Patankar , Madhura Phadke , Satish Devane
Performance of word sense disambiguation (WSD) is one of the challenging tasks in the area of natural language processing (NLP). Generation of sense annotated corpus for multilingual word sense disambiguation is out of reach for most languages even if resources are available. In this paper we propose an unsupervised method using word and sense embedding or improving the performance of these systems using untagged. Corpora and create two bags namely ontological bag and wiki sense bag to generate the senses with highest similarity. Wiki sense bag provides external knowledge to the system required to boost the disambiguation accuracy. We explore Word2Vec model to generate the sense bag and observe significant performance gain for our dataset.
Volume: 11
Issue: 1
Page: 319-326
Publish at: 2022-03-01
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