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31,456 Article Results

Recloser-Fuse settings in distribution systems with optimizing multiple distributed generation considering technical aspects

10.11591/ijeecs.v17.i3.pp1135-1149
Ahmed Mohamed Abdelbaset , AboulFotouh A. Mohamed , Essam Abou El-Zahab , M. A. Moustafa Hassan
With the widespread of using distributed generation, the connection of DGs in the distribution system causes miscoordination between protective devices. This paper introduces the problems associated with recloser fuse miscoordination (RFM) in the presence of single and multiple DG in a radial distribution system. Two Multi objective optimization problems are presented. The first is based on technical impacts to determine the optimal size and location of DG considering system power loss reduction and enhancement the voltage profile with a certain constraints and the second is used for minimizing the operating time of all fuses and recloser with obtaining the optimum settings of fuse recloser coordination characteristics. Whale Optimizer algorithm (WOA) emulated RFM as an optimization problem. The performance of the proposed methodology is applied to the standard IEEE 33 node test system. The results show the robustness of the proposed algorithm for solving the RFM problem with achieving system power loss reduction and voltage profile enhancement.
Volume: 17
Issue: 3
Page: 1135-1149
Publish at: 2020-03-01

Medical student career choice’s determinants in Asia: a systematic review

10.11591/ijphs.v9i1.20400
Rizma Adlia Syakurah , Rosyila Rosyila
Asian countries have distinctive cultural patterns and norms that influence one’s decision making process throughout their life, including career choice. This review was intended to explore factors influencing medical students’ career choice in Asia. This review was compiled based on guidelines from PRISMA (Preferred Reporting Items for systematic reviews and Meta-Analysis). Data was searched and collected from studies published from electronic databases such as Pubmed, Europe PMC, Cochrane Databases, Science Direct, BMC Medical Education, ACM, Wiley Online Library and Mendeley with the keyword "medical student" and "career choice's determinants" or "medical students" and "career determinant" and "Asia". Six studies were found to match the inclusion criteria for this review. Five cross-sectional and one prospective cohort studies involving a total of 1.862 participants that were published between January 1986 and December 2017 were included. Among the included studies, the main findings were grouped into five main determinants: personal interest, family influence, prestigious profession, secure profession, and financial reward. Personal interest was the most influential factor that contributed to Asian medical student career choice’s determinants. It also highlights clinical specialist as unanimous career choice.
Volume: 9
Issue: 1
Page: 57-61
Publish at: 2020-03-01

Estimation of water quality index using artificial intelligence approaches and multi-linear regression

10.11591/ijai.v9.i1.pp126-134
Muhammad Sani Gaya , Sani Isah Abba , Aliyu Muhammad Abdu , Abubakar Ibrahim Tukur , Mubarak Auwal Saleh , Parvaneh Esmaili , Norhaliza Abdul Wahab
Water quality index is a measure of water quality at a certain location and over a period of time. High value indicates that the water is unsafe for drinking and inadequate in quality to meet the designated uses. Most of the classical models are unreliable producing unpromising forecasting results. This study presents Artificial Intelligence (AI) techniques and a Multi Linear Regression (MLR) as the classical linear model for estimating the Water Quality Index (WQI) of Palla station of Yamuna river, India. Full-scale data of the river were used in validating the models. Performance measures such as Mean Square Error (MSE), Root Mean Squared Error (RMSE) and Determination Coefficient (DC) were utilized in evaluating the accuracy and performance of the models. The obtained result depicted the superiority of AI models over the MLR model. The results also indicated that, the best model of both ANN and ANFIS proved high improvement in performance accuracy over MLR up to 10% in the verification phase. The difference between ANN and ANFIS accuracy is negligible due to a slight increment in performance accuracy indicating that both ANN and ANFIS could serve as reliable models for the estimation of WQI.
Volume: 9
Issue: 1
Page: 126-134
Publish at: 2020-03-01

A multimodal biometric identification system based on cascade advanced of fingerprint, fingervein and face images

10.11591/ijeecs.v17.i3.pp1562-1570
El mehdi Cherrat , Rachid Alaoui , Hassane Bouzahir
In this paper, we present a multimodal biometric recognition system that combines fingerprint, fingervein and face images based on cascade advanced and decision level fusion. First, in fingerprint recognition system, the images are enhanced using gabor filter, binarized and passed to thinning method. Then, the minutiae points are extracted to identify that an individual is genuine or impostor. In fingervein recognition system, image processing is required using Linear Regression Line, Canny and local histogram equalization technique to improve better the quality of images. Next, the features are obtained using Histogram of Oriented Gradient (HOG). Moreover, the Convolutional Neural Networks (CNN) and the Local Binary Pattern (LBP) are applied to detect and extract the features of the face images, respectively. In addition, we proposed three different modes in our work. At the first, the person is identified when the recognition system of one single biometric modality is matched. At the second, the fusion is achieved at cascade decision level method based on AND rule when the recognition system of both biometric traits is validated. At the last mode, the fusion is accomplished at decision level method based on AND rule using three types of biometric. The simulation results have demonstrated that the proposed fusion algorithm increases the accuracy to 99,43% than the other system based on unimodal or bimodal characteristics.
Volume: 17
Issue: 3
Page: 1562-1570
Publish at: 2020-03-01

Human gait recognition using orthogonal least square as feature selection

10.11591/ijeecs.v17.i3.pp1355-1361
Rohilah Sahak , Nooritawati Md Tahir , Ahmad Ihsan Mohd Yassin , Fadhlan Hafizhelmi Kamaruzaman
This study investigates the potential gait features that are related to human recognition using orthogonal least square (OLS). Firstly, video of 30 subjects walking in oblique view was recorded using Kinect. Next, all 20 skeleton joints in 3D space were extracted and further selected using OLS. Additionally, SVM with linear, polynomial and radial basis function (RBF) kernel was used to classify the selected features. As consequences, OLS was proven to be able to identify the significant features using all three kernels of SVM since all recognition accuracy attained is higher as compared to the original gait features. Results attained showed that the highest recognition accuracy was 90.67% using 48 skeleton joint points for SVM with linear as kernel, followed by 46 skeleton joint points for SVM with RBF kernel namely 88.33% and accuracy of 86.33% for 38 skeleton joint points using  polynomial kernel.
Volume: 17
Issue: 3
Page: 1355-1361
Publish at: 2020-03-01

Teaching workload in 21st century higher education learning setting

10.11591/ijere.v9i1.20419
Hamimah Ujir , Shanti Faridah Salleh , Ade Syaheda Wani Marzuki , Hashimatul Fatma Hashim , Aidil Azli Alias
A standard equation on teaching workload calculation in the previous academic setting only includes the contact hours with students through lecture, tutorial, laboratory and in-person consultation (i.e. one-to-one final year project consultation). This paper discusses teaching workload factors according to the current higher-education setting. Devising a teaching workload equation that includes all teaching and learning strategies in the 21st century higher education learning setting is needed. This is indeed a challenging task for the academic administrators to scrutinize every single parameter that accounted for teaching and learning. In this work, we have discussed the parameters which are significant in teaching workload calculation. For instance, the conventional in-person contact with the students, type of delivery, type of assessment, the preparation of materials for flipped classroom as well as MOOC, to name a few. Teaching workload also affects quality teaching and from the academic perception, the higher workload means lower-quality teaching.
Volume: 9
Issue: 1
Page: 221-226
Publish at: 2020-03-01

Design and implementation of a feedback programmable spin coating system

10.11591/ijeecs.v17.i3.pp1516-1523
Ahmed Kadhim , Salah M. Swadi , Ghusoon M Ali
In this work, a speed controlled, the programmable, low-cost, high-efficiency spin coating system is designed and implemented. The system is built from commercially available hard disk drivers DC motor, vacuum pump, speed sensor, brushless driver circuit carries Toshiba's TB6575FNG IC, PIC18F47J53 Microcontroller and using the interactive user interface to communicate with a user. Three different voltage stages and pulse width modulation techniques were used to guarantee accurate spinning speed and time. This system provides a wide range of precise and stable multi-step speeds rang of 1500 to 8,000 rpm. To evaluate the implemented system, ZnO thin films have been deposited by the sol-gel method on a glass substrate. Homogenous and uniform thickness films were obtained. The outstanding features of this system are the stability, accuracy, low energy consumption and durability, and the simplicity of adjusting multi-step spinning speed and time by using the interactive user interface.
Volume: 17
Issue: 3
Page: 1516-1523
Publish at: 2020-03-01

Patient satisfaction with healthcare services: Bangladesh perspective

10.11591/ijphs.v9i1.20386
Abdul Kader Mohiuddin
Patient satisfaction is a useful measure for providing a quality benchmark for healthcare services. Concern about the quality of healthcare services in Bangladesh has led to a loss of confidence in healthcare providers, low use of public health facilities and increased outflows of patients from Bangladesh to hospitals abroad. The key obstacles to access to health services are insufficient infrastructure and poor quality of existing facilities, lack of medical equipment, scarcity of doctors due to high patient load, long distance to the facilities and long waiting times until facilities have been reached, very short appointment hours, lack of empathy of health professionals, their generally callous and casual attitude, aggressive pursuit of monetary gains, poor levels of competence and, occasionally, disregard for the suffering that patients endure without being able to voice their concerns-all of these service failures are reported frequently in the print media. Such failures can play a powerful role in shaping patients’ negative attitudes and dissatisfaction with healthcare service providers and healthcare itself.
Volume: 9
Issue: 1
Page: 34-45
Publish at: 2020-03-01

Medical documents classification using topic modeling

10.11591/ijeecs.v17.i3.pp1524-1530
Maryam Nuser , Enas Al-Horani
The number of digital medical documents is increasing continuously; several medical websites share a lot of unclassified articles. These articles have very long texts that should be read to determine the topic of each document. The classification of these documents is important so researchers can use these documents easily and the effort and time in reading and searching for a specific topic will be reduced. Therefore, an automatic way to extract latent topics from these text documents is needed. Topic modeling is one of the techniques used to deal with this problem. In this paper, a medical collection of documents is used; this collection contains documents from three types of widespread diseases (Heart Diseases, Blood Pressure and Cholesterol). LDA topic modeling technique is applied to classify these documents into the previous mentioned topics. An evaluation of the algorithm’s results is done and the LDA shows a good level of classification accuracy.
Volume: 17
Issue: 3
Page: 1524-1530
Publish at: 2020-03-01

A comparative study for bandwidth on demand using ONOS reactive and intent forwarding

10.11591/ijeecs.v17.i3.pp1410-1421
Fathul Arif Kamarudin , Megat Norulazmi Megat Mohamed Noor , Fuead Ali
Telco operators need to tailor their networks to be agile, efficient and able manage the operational cost at moderate level. Furthermore, the norm of network volatility practiced by many enterprises open to a new challenge in managing an increasing traffic over the same WAN. For an enterprise, turning toward Bandwidth-on-Demand (BoD) approach promises to deliver extra network capacity when in demand without the complexity of running separate network. However, they need to manually transform these high-level policies into low-level configuration command and thus error-prone. This study was to address the effects of SDN (software-defined network) on the BoD performance towards the differences between the reactive and intent forwarding based on the assessment matrix. The testbed was performed under Mininet simulator which interacted with ONOS (Open Network Operating System). Mesh type topology with a predetermine parameter matrix was used using random topology generator. The expected outcome from this research was to show the effect on the BoD performance under two type of forwarding; reactive and intent based on the assessment matrix. This report contributed towards determining the effectiveness of SDN architecture on BoD performance and to improve future benchmarking on SDN-BoD testbed.
Volume: 17
Issue: 3
Page: 1410-1421
Publish at: 2020-03-01

Adherence to iron and folic acid supplementation and associated factors among antenatal care attendants in Northwest Ethiopia

10.11591/ijphs.v9i1.20385
Berhanu Abebaw Mekonnen , Yadeta Dessie , Negga Baraki , Abdu Oumer , Mehari Gebru
Iron and folic acid supplementation is the key approach for anemia prevention and control during pregnancy. In Ethiopia only <1% of pregnant mothers ingest the ideal number of tablets. Although, adherence is the most important challenge, literature is dearth and the predictors are undoubtedly recognized. Institution based quantitative cross sectional study design triangulated with qualitative methods was employed among 395 systematically selected pregnant mothers attending antenatal care in Debre Markos town, Ethiopia. Data were collected using interviewer administered structured questionnaire. Data were entered into Epi data and exported to SPSS software. Bivariate and multivariable Logistic regression with the 95% confidence interval was computed. P-value < 0.05 was declared as statistically significant. Eight in-depth interviews were conducted. The data were entered and analyzed using open code software. Adherence rate was 55.5% (95%CI, 50.5%-60.4%). Pregnant mothers who had; history of anemia during current pregnancy [AOR:7.9, 95%CI (4.44-14.01)], primary education (AOR:4.0, 95%CI (1.88-8.54)], secondary education and above (AOR:3.6, 95%CI (1.20-6.94)], good knowledge of iron and folic acid supplementation [AOR:2.1, 95%CI (1.24-3.56)], and early registration for antenatal care (AOR:1.8, 95%CI (1.06-3.11)] were predictors of iron and folic acid supplementation adherence. The rate of adherence was low. Getting medical advice and fear of illness if missed were the primary reasons that enforce mothers to take the tablets. Hence, improving mothers’ knowledge regarding overall aspects of the tablet through better advice, community teaching and the mass media at large, would improve adherence.
Volume: 9
Issue: 1
Page: 20-28
Publish at: 2020-03-01

The effect of physical activity on lymphocyte count in smokers who consume black cumin seed (Nigella sativa L.) oil

10.11591/ijphs.v9i1.20402
Titiek Hidayati , Akrom Akrom , Laili Apriani
Twenty percent of the total number of human leukocytes is lymphocytes. Lymphocytes are responsible for the control of the adaptive immune system. Physical activity is any body movement that requires energy to do it. Physical activity is related to changes in a person's immunity so that it can reduce the risks of diseases such as obesity, hypertension, diabetes, cancer, and stroke. Black Cumin Seed Oil (BCSO) in various studies has been widely used as a supplement, especially as an immune-modulator. The purpose of this study is to see the effect of physical activity on lymphocyte levels in smokers who have been given Black Cumin Seed Oil for 30 days. This study used a single-blind Randomized Controlled Trial (RCT) method, with a total of 36 test subjects divided into four groups. Group 1 received placebo 3x1 capsules/day, group 2 received BCSO 3x1 capsules/day, group 3 received BCSO 3x2 capsules/day, and group 4 received BCSO 3x3 capsules/day. The intervention was carried out for 30 days, then on the 31st-day blood was drawn for analysis. Data analysis using an independent t-test to see the average group with high and low activity, while to see the average lymphocyte between treatment groups using one way ANOVA test. The test results were said to be significant if p <0.05. The p-value of the independent t-test is 0.045, and one way ANOVA test p-value is 0.343. In conclusion, physical activity can increase lymphocyte levels significantly, but not on BCSO administration.
Volume: 9
Issue: 1
Page: 8-14
Publish at: 2020-03-01

Midwife roles to decline maternal mortality rate

10.11591/ijphs.v9i1.20393
Ambar Dwi Erawati , Rinayati Rinayati , Sri Wahyuning
In order to reduce maternal mortality in Central Java, this Province has a superior program which is called 5Ng (Jateng Gayeng Nginceng Wong Meteng/Central Java Glad to See Pregnant Women). Implementation of childbirth assistance in Semarang and Kendal districts in order to reduce maternal mortality has its own model. Based on the preliminary survey, the maternal mortality rate in Semarang and Kendal regencies has decreased. This research aimed to explain the implementation of delivery assistance by midwives in the framework of accelerating reduction in maternal mortality. This study used a qualitative approach with descriptive analytical specifications. Research subjects were midwives in Semarang and Kendal Regencies. Data collection method was conducted by direct in-depth interview. Normal childbirth assistance in Semarang Regency is carried out at the Midwife Independent Practice, Village midwife practice, at the village public health center and public health center with delivery assistance of at least four hands (two midwives). In Kendal Regency normal delivery assistance is performed at first health facility.
Volume: 9
Issue: 1
Page: 29-33
Publish at: 2020-03-01

Application of carbon nanotubes (CNT) on the computer science and electrical engineering: A review

10.11591/ijres.v9.i1.pp61-82
Hossein Kardan Moghaddam , Mohamad Reza Maraki , Amir Rajaei
In recent years, dimensions and sizes of components and parts in the computer and electronic industries have been steadily reducing, as they are now considered very tiny tools and there is always a need to store and process information stronger. Nanotubes have poor magnetic properties. If nanotubes are covered by ferromagnetic nanoparticles, their magnetic properties can be improved and they can be used in the manufacture of nanoelectronic devices in the computer and electronic industries. In addition to reviewing the structure and properties of materials made using different nanomaterials for use in the computer and electronic industries, the present paper aimed to study different applications of nanomaterials, especially carbon nanotubes, in the manufacture of electronic devices. The present study showed that the corporation of nanomaterials into electronic devices is a promising approach for future applications which can revolutionize the computer industry.
Volume: 9
Issue: 1
Page: 61-82
Publish at: 2020-03-01

Simplified down sampling factor based modified SVPWM technique for cascaded inverter fed induction motor drive

10.11591/ijaas.v9.i1.pp20-26
Ravi Kumar Bhukya , P. Satish Kumar
This paper presents a rivew, investigation and performance analysis of novel down samples factor based modified space vector PWM is called clamping SVPWM technique for cascaded Multilevel Invereter fed to Induction motor drive. In this paper the reference sine wave generated as in case of conventional off set injected SVPWM technique is modified by down sampling factor the reference wave by order of 10. The performance analyses of this modulation strategies are analyzed by apply for five level, seven level, nine level and eleven level inverter. The performance analysis of cascaded inverter interms of line voltage, stator current, speed, torque and total harmonic distortion. The results are depicting that PD PWM is more effective among the four proposed PWM technique. It is observed that the CSV Pulse width modulation ensures excellent, close to optimized pulse distribution results compared to SPWM technique and also 11-level inverter beter performance in case of low THD and better foundemental output voltages comapared to 5, 7, 9-level inverter. The proposed technique has been simulated using MATLAB/SIMULINK software. This proposed technique can be applied to N-level multilevel Inverter also.
Volume: 9
Issue: 1
Page: 20-26
Publish at: 2020-03-01
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