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29,939 Article Results

Pneumonia detection based on transfer learning and a combination of VGG19 and a CNN Built from scratch

10.11591/ijeecs.v24.i3.pp1469-1480
Oussama Dahmane , Mustapha Khelifi , Mohammed Beladgham , Ibrahim Kadri
In this paper, to categorize and detect pneumonia from a collection of chest X-ray picture samples, we propose a deep learning technique based on object detection, convolutional neural networks, and transfer learning. The proposed model is a combination of the pre-trained model (VGG19) and our designed architecture. The Guangzhou Women and Children's Medical Center in Guangzhou, China provided the chest X-ray dataset used in this study. There are 5,000 samples in the data set, with 1,583 healthy samples and 4,273 pneumonia samples. Preprocessing techniques such as contrast limited adaptive histogram equalization (CLAHE) and brightness preserving bi-histogram equalization was also used (BBHE) to improve accuracy. Due to the imbalance of the data set, we adopted some training techniques to improve the learning process of the samples. This network achieved over 99% accuracy due to the proposed architecture that is based on a combination of two models. The pre-trained VGG19 as feature extractor and our designed convolutional neural network (CNN).
Volume: 24
Issue: 3
Page: 1469-1480
Publish at: 2021-12-01

The epidemiology of burn injury among children during COVID-19 19 pandemic and WFH policy in Malang, East Java, Indonesia

10.11591/ijphs.v10i4.21014
Herman Yosef Limpat Wihastyoko , Arviansyah Arviansyah , Erdo Puncak Sidarta
Work from home (WFH) mandate is one of the major changes known during this pandemic, aimed as a preventive way to mitigate the spread of the COVID-19 virus. This study aimed to observe the characteristics of pediatric burn injury during COVID-19 pandemic and WFH mandate's impact on pediatric burn injury admission at some Hospital burn centers in Malang. Every patient’s age, gender, clinical characteristics, parent's background, and other variables such as the possession of siblings, response time using our burn registry form, and comparative analysis of the incident in WFH housewife mother were assessed. The majority were in the group age of under five years old group age (70%) with a mean of 5.5 years. The most frequent part of the burn injured is extremity 36.7%, and hot liquid dominates as the cause of the injury 73.3% with the total body surface area of burn injury group >10% is the most common 56.7%. The burn injury incident happened more frequently in mothers with children less than two in both groups. This study showed that the increase in increasement of the pediatric burn injury during COVID-19 pandemic between housewife mother and WFH mother has no significant difference also showed that parent especially mother unable to supervise the children during WFH. Strategies to mitigate pediatric burn injuries during WFH should be thoughtfully implemented.
Volume: 10
Issue: 4
Page: 744-750
Publish at: 2021-12-01

Performance improvement of fractional N-PLL synthesizers for digital communication applications

10.12928/telkomnika.v19i6.21929
Nour Zaid; Ninevah University Naktal , A. Z.; Ninevah University Yonis , Khalid Khalil; Ninevah University Mohammed
Loop filter with two order was designed to improve the performance of the fractional N-phase locked loop (PLL) circuit (reference spurs noise and switching time), decreasing these two factors give good characteristic to fractional N-PLL circuit, the second order and third order loop filters are widely used in frequency synthesizer because they give good stability tolerance and for their simple architecture. They are designed at bandwidth B=125 KHz and its multipoles, at two values of the phase margin (pm)= 35°, 57°. MATLAB program was used to find the lock time, the component values for each element in the loop filter, also the filter impedance T(s), the bode plot of frequency response for close loop (CL) and open loop gain (OL). It is found by comparing the result of the frequency response for the 2nd order loop filter and 3rd order loop filter, that increasing the order of the filter will reduce the spurs noise that destroy the received signal at receiving side.
Volume: 19
Issue: 6
Page: 2030-2037
Publish at: 2021-12-01

An effective new iterative CG-method to solve unconstrained non-linear optimization issues

10.12928/telkomnika.v19i6.19791
Rana Z.; University of Telafer Al-Kawaz , Abbas Y.; University of Telafer Al-Bayati
In this paper, we proposed a matrix-free double-search direction based on the updated parameter file of the double-search direction with a new mathematical formula for the gamma parameter. When comparing the numerical results of this algorithm with the standard (HWY) algorithm which given by Halilu, Waziri and Yusuf in 2020. We get very robust numerical results. The proposed algorithm is devoid of derivatives to solve large-scale non-linear problems by combining two search directions in one search direction. We demonstrated the overall convergence of the proposed algorithm under certain conditions. The numerical results presented in this paper show that the new search direction is useful for solving widespread non-linear test problems.
Volume: 19
Issue: 6
Page: 1847-1856
Publish at: 2021-12-01

Numerical approach of riemann-liouville fractional derivative operator

10.11591/ijece.v11i6.pp5367-5378
Ramzi B. Albadarneh , Iqbal M. Batiha , Ahmad Adwai , Nedal Tahat , A. K. Alomari
This article introduces some new straightforward and yet powerful formulas in the form of series solutions together with their residual errors for approximating the Riemann-Liouville fractional derivative operator. These formulas are derived by utilizing some of forthright computations, and by utilizing the so-called weighted mean value theorem (WMVT). Undoubtedly, such formulas will be extremely useful in establishing new approaches for several solutions of both linear and nonlinear fractionalorder differential equations. This assertion is confirmed by addressing several linear and nonlinear problems that illustrate the effectiveness and the practicability of the gained findings.
Volume: 11
Issue: 6
Page: 5367-5378
Publish at: 2021-12-01

An adaptive multi-hop routing with IoT abstraction for minimizing delay-node capacity trade-offs in mobile ad-hoc network

10.11591/ijece.v11i6.pp5315-5326
Haitham Shiaibth Chasib , Saddam Raheem Salih , Israa Jaber Khalaf Al-Ogaili
Delay and node capacity are incompatible mobile ad hoc constraints because of the network's versatility and self-disciplined design. It is a challenging problem to maximize the trade-off between the above mobility correlation factors. This manuscript proposes an adaptive multi-hop routing (A.M.R.) for mobile ad-hoc network (MANET) to minimize the trade-off by integrating the internet of things (IoT). IoT nodes' smart computing and offloading abilities are extended to ad-hoc nodes to improve routing and transmission. Dor MANET nodes in route exploration, neighbor selection, and data transmission, the beneficial features of IoT include enhanced decision making. The traditional routing protocols use IoT at the time of the neighbor discovery process in updating the routing table and localization. The harmonizing technologies with their extended support improve the performance of MANETs has been estimated. The proposed method achieves better throughput (14.16 Mbps), delay (0.118), packet drop (126), and overhead (36 packets) when compared to existing methods.
Volume: 11
Issue: 6
Page: 5315-5326
Publish at: 2021-12-01

Image retrieval based on swarm intelligence

10.11591/ijece.v11i6.pp5390-5401
Shahbaa I. Khaleel , Ragad W. Khaled
To keep pace with the development of modern technology in this information technology era, and the immense image databases, whether personal or commercial, are increasing, is requiring the management of these databases to strong and accurate systems to retrieve images with high efficiency. Because of the swarm intelligence algorithms are great importance in solving difficult problems and obtaining the best solutions. Here in this research, a proposed system is designed to retrieve color images based on swarm intelligence algorithms. Where the algorithm of the ant colony optimization (ACOM) and the intelligent water drop (IWDM) was used to improve the system's work by conducting the clustering process in these two methods on the features extracted by annular color moment method (ACM) to obtain clustered data, the amount of similarity between them and the query image, is calculated to retrieve images from the database, efficiently and in a short time. In addition, improving the work of these two methods by hybridizing them with fuzzy method, fuzzy gath geva clustering algorithm (FGCA) and obtaining two new high efficiency hybrid algorithms fuzzy ant colony optimization method (FACOM) and fuzzy intelligent water drop method (FIWDM) by retrieving images whose performance values are calculated by calculating the values of precision, recall and the f-measure. It proved its efficiency by comparing it with fuzzy method, FGCA and by methods of swarm intelligence without hybridization, and its work was excellent.
Volume: 11
Issue: 6
Page: 5390-5401
Publish at: 2021-12-01

Finding the best tour for travelling salesman problem using artificial ecosystem optimization

10.11591/ijece.v11i6.pp5497-5504
Quyen Thi Nguyen , Minh-Phung Bui
This paper presents a new method based on the artificial ecosystem optimization (AEO) algorithm for finding the shortest tour of the travelling salesman problem (TSP). Wherein, AEO is a newly developed algorithm based on the idea of the energy flow of living organisms in the ecosystem consisting of production, consumption and decomposition mechanisms. In order to improve the efficiency of the AEO for the TSP problem, the 2-opt movement technique is equipped to enhance the quality of the solutions created by the AEO. The effectiveness of AEO for the TSP problem has been verified on four TSP instances consisting of the 14, 30, 48 and 52 cities. Based on the calculated results and the compared results with the previous methods, the proposed AEO method is one of the effective approaches for solving the TSP problem.
Volume: 11
Issue: 6
Page: 5497-5504
Publish at: 2021-12-01

A performance evaluation of convolutional neural network architecture for classification of rice leaf disease

10.11591/ijai.v10.i4.pp1069-1078
Afis Julianto , Andi Sunyoto
Plant disease is a challenge in the agricultural sector, especially for rice production. Identifying diseases in rice leaves is the first step to wipe out and treat diseases to reduce crop failure. With the rapid development of the convolutional neural network (CNN), rice leaf disease can be recognized well without the help of an expert. In this research, the performance evaluation of CNN architecture will be carried out to analyze the classification of rice leaf disease images by classifying 5932 image data which are divided into 4 disease classes. The comparison of training data, validation, and testing are 60:20:20. Adam optimization with a learning rate of 0.0009 and softmax activation was used in this study. From the experimental results, the InceptionV3 and InceptionResnetV2 architectures got the best accuracy, namely 100%, ResNet50 and DenseNet201 got 99.83%, MobileNet 99.33%, and EfficientNetB3 90.14% accuracy.
Volume: 10
Issue: 4
Page: 1069-1078
Publish at: 2021-12-01

Bilateral control system of the space robot with large delays

10.12928/telkomnika.v19i6.18837
G.; St. Petersburg State University Alferov , P.; St. Petersburg State University Efimova , D.; St. Petersburg State University Shymanchuk , S.; Noroff University College Kadry , M. N.; Al-Mustaqbal University College Meqdad
The main obstacle of the construction of efficient remote-control systems for space robots is a significant delay in transmissions of control signals to robots from the earth-based control center and receiving feedback signals. This significantly complicates the solution of control problem, especially if robot’s manipulators move objects that have mechanical constraints. Our work describes a method for bilateral control of a space robot with large delays. The uniqueness of this method lies in the special structure of the control algorithm. Bilateral control implies force feedback necessary for the interaction of a space robot with objects that have holonomic connections. We present a new mathematical model of the elements of the bilateral control system and their computer implementation using specific examples.
Volume: 19
Issue: 6
Page: 1962-1974
Publish at: 2021-12-01

Overview of microgrid systems

10.11591/ijaas.v10.i4.pp378-391
V. Saravanan , K. M. Venkatachalam , M. Arumugam , M. A. K. Borelessa , K. T. M. U. Hemapala
This research paper discusses the different types of microgrids, their structural arrangements and the technology adopted for different power management projects. It also deals with various control strategies and security plans used for optimal performance. A detailed overview of the direct current (DC) microgrid system is discussed, outlining its configurations and technical-economic aspects. Performance evaluation of microgrid carried out through various reliability codes is also provided.
Volume: 10
Issue: 4
Page: 378-391
Publish at: 2021-12-01

A secured data transform-and-transfer algorithm for energy internet-of-things applications

10.12928/telkomnika.v19i6.21665
Abbas M.; Universiti Tenaga Nasional (UNITEN) Al-Ghaili , Hairoladenan; Universiti Tenaga Nasional (UNITEN) Kasim , Naif Mohammed; Dezhou University Al-Hada
Digital transformation (DT) is one of the key technologies with effective impacts on many traditional processes towards a digital world. DT influences the way other digital services behave. Hence, there is a need to consider DT-related processes carefully specifically while designing phase. DT contributes to many services. It can, for example, contribute to implement security tasks applied to digital contents and therefore can be applied to change contents being secured. One of the transformation ways applied in security is to consider the way those digital contents are being stored or transferred. This paper proposes a DT algorithm (DTA) for energy internet-of-things (EIOT) contents. DTA consists of two steps, to convert original contents to another digital form and to transfer that form utilizing IOT. This paper utilizes DT in term of security. EIOT contents are converted to increase security. It is aimed to transfer EIOT contents to destination safely and efficiently. Thus, EIOT contents are transformed first to hide original contents. To make sure that the transferring process is done safely, DTA is evaluated in terms of efficiency, accuracy, and robustness. Results confirm that DTA is efficient, accurate, and robust against loss of bits caused by transferring.
Volume: 19
Issue: 6
Page: 1872-1883
Publish at: 2021-12-01

SAFEA application design on determining the optimal order quantity of chicken eggs based on fuzzy logic

10.11591/ijai.v10.i4.pp858-871
Sesar Husen Santosa , Agung Prayudha Hidayat , Ridwan Siskandar
The availability of stock in the chicken egg supply chain is influenced by the ability of egg Agents to determine the optimal orders to suppliers. The optimal number of orders is very important to manage for the Bogor City Egg Agent Indonesia because the stock capacity reaches 340 crates. The optimal number of orders for eggs at the Egg Agent is influenced by input variables, namely final stock (crate), selling price (crate), and consumer demand (crate) so that the inventory is under control. The three input variables have fuzzy values that must be processed using fuzzy logic to get the optimal number of orders to suppliers so that the egg stock in the warehouse is well maintained. The optimal order model for eggs in the smart application for egg agent (SAFEA) was developed using a fuzzy logic approach with the triangular and trapezoidal membership function. Based on the optimal order model in the SAFEA application, the optimal order to the supplier is 100-104 crates per day.
Volume: 10
Issue: 4
Page: 858-871
Publish at: 2021-12-01

A MATLAB model for diagnosing sickle cells and other blood abnormalities using image processing

10.11591/ijece.v11i6.pp5060-5065
Mohammed Al-Momin , Ammar Almomin
The conventional method for detecting blood abnormality is time consuming and lacks the high level of accuracy. In this paper a MATLAB based solution has been suggested to tackle the problem of time consumption and accuracy. Three types of blood abnormality have been covered here, namely, anemia which is characterized by low count of red blood cells (RBCs), Leukemia which is depicted by increasing the number of white blood cells (WBCs), and sickle cell blood disorder which is caused by a deformation in the shape of red cells. The algorithm has been tested on different images of blood smears and noticed to give an acceptable level of accuracy. Image processing techniques has been used here to detect the different types of blood constituents. Unlike many other researches, this research includes the blood sickling disorder which is epidemic in certain regions of the world, and offers a more accuracy than other algorithms through the use of detaching overlapped cells strategy.
Volume: 11
Issue: 6
Page: 5060-5065
Publish at: 2021-12-01

A systematic literature review of machine learning methods in predicting court decisions

10.11591/ijai.v10.i4.pp1091-1102
Nur Aqilah Khadijah Rosili , Noor Hidayah Zakaria , Rohayanti Hassan , Shahreen Kasim , Farid Zamani Che Rose , Tole Sutikno
Envisaging legal cases’ outcomes can assist the judicial decision-making process. Prediction is possible in various cases, such as predicting the outcome of construction litigation, crime-related cases, parental rights, worker types, divorces, and tax law. The machine learning methods can function as support decision tools in the legal system with artificial intelligence’s advancement. This study aimed to impart a systematic literature review (SLR) of studies concerning the prediction of court decisions via machine learning methods. The review determines and analyses the machine learning methods used in predicting court decisions. This review utilised RepOrting Standards for Systematic Evidence Syntheses (ROSES) publication standard. Subsequently, 22 relevant studies that most commonly predicted the judgement results involving binary classification were chosen from significant databases: Scopus and Web of Sciences. According to the SLR’s outcomes, various machine learning methods can be used in predicting court decisions. Additionally, the performance is acceptable since most methods achieved more than 70% accuracy. Nevertheless, improvements can be made on the types of judicial decisions predicted using the existing machine learning methods.
Volume: 10
Issue: 4
Page: 1091-1102
Publish at: 2021-12-01
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