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Attitude stabilization control for quadrotor using self-tuning fuzzy-PD 基于自整定模糊pd的四旋翼飞行器姿态稳定控制
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-04-02 DOI: 10.14710/jtsiskom.8.2.2020.164-170
S. Sumardi, H. Afrisal, Wisnu Dyan Nugroho
{"title":"Attitude stabilization control for quadrotor using self-tuning fuzzy-PD","authors":"S. Sumardi, H. Afrisal, Wisnu Dyan Nugroho","doi":"10.14710/jtsiskom.8.2.2020.164-170","DOIUrl":"https://doi.org/10.14710/jtsiskom.8.2.2020.164-170","url":null,"abstract":"This research aims to develop a quadrotor control system for maintaining its position and balance from disturbance while hovering. A fast and reliable control technique is required to respond to high maneuverability and high non-linearity of six degrees of freedom system. Hence, this research focuses on designing a Self-Tuning Fuzzy-PD control system for quadrotor’s attitude. The designed control system utilizes input data from the Inertial Navigation System (INS). Then the quadrotor’s attitude is controlled by passing the PWM signal to the flight controller APM 2.6. The result shows that the average absolute error for the roll, pitch, and yaw angles are relatively small, as mentioned consecutively 2.0790, 2.2660, and 1.5280, while the maximum absolute errors are 6.3140, 6.7220, and 3.820.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67028428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Retrieval of source documents in a text reuse system 文本再利用系统中的源文件检索
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-03-13 DOI: 10.14710/jtsiskom.8.2.2020.140-149
Nathaniel Clarence Haryanto, Lucia D. Krisnawati, Antonius Rachmat Chrismanto
{"title":"Retrieval of source documents in a text reuse system","authors":"Nathaniel Clarence Haryanto, Lucia D. Krisnawati, Antonius Rachmat Chrismanto","doi":"10.14710/jtsiskom.8.2.2020.140-149","DOIUrl":"https://doi.org/10.14710/jtsiskom.8.2.2020.140-149","url":null,"abstract":"The architecture of the text-reuse detection system consists of three main modules, i.e., source retrieval, text analysis, and knowledge-based postprocessing. Each module plays an important role in the accuracy rate of the detection outputs. Therefore, this research focuses on developing the source retrieval system in cases where the source documents have been obfuscated in different levels. Two steps of term weighting were applied to get such documents. The first was the local-word weighting, which has been applied to the test or reused documents to select query per text segments. The tf-idf term weighting was applied for indexing all documents in the corpus and as the basis for computing cosine similarity between the queries per segment and the documents in the corpus. A two-step filtering technique was applied to get the source document candidates. Using artificial cases of text reuse testing, the system achieves the same rates of precision and recall that are 0.967, while the recall rate for the simulated cases of reused text is 0.66.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":"14 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141209180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Retrieval of source documents in a text reuse system 文本再利用系统中的源文件检索
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-03-13 DOI: 10.14710/jtsiskom.8.2.2020.140-149
Nathaniel Clarence Haryanto, Lucia D. Krisnawati, Antonius Rachmat Chrismanto
{"title":"Retrieval of source documents in a text reuse system","authors":"Nathaniel Clarence Haryanto, Lucia D. Krisnawati, Antonius Rachmat Chrismanto","doi":"10.14710/jtsiskom.8.2.2020.140-149","DOIUrl":"https://doi.org/10.14710/jtsiskom.8.2.2020.140-149","url":null,"abstract":"The architecture of the text-reuse detection system consists of three main modules, i.e., source retrieval, text analysis, and knowledge-based postprocessing. Each module plays an important role in the accuracy rate of the detection outputs. Therefore, this research focuses on developing the source retrieval system in cases where the source documents have been obfuscated in different levels. Two steps of term weighting were applied to get such documents. The first was the local-word weighting, which has been applied to the test or reused documents to select query per text segments. The tf-idf term weighting was applied for indexing all documents in the corpus and as the basis for computing cosine similarity between the queries per segment and the documents in the corpus. A two-step filtering technique was applied to get the source document candidates. Using artificial cases of text reuse testing, the system achieves the same rates of precision and recall that are 0.967, while the recall rate for the simulated cases of reused text is 0.66.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":" 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141222992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
K-nearest neighbor performance for Nusantara scripts image transliteration k近邻性能对努沙塔拉文字图像的音译
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-03-13 DOI: 10.14710/jtsiskom.8.2.2020.150-156
Anastasia Rita Widiarti
{"title":"K-nearest neighbor performance for Nusantara scripts image transliteration","authors":"Anastasia Rita Widiarti","doi":"10.14710/jtsiskom.8.2.2020.150-156","DOIUrl":"https://doi.org/10.14710/jtsiskom.8.2.2020.150-156","url":null,"abstract":"The concept of classification using the k-nearest neighbor (KNN) method is simple, easy to understand, and easy to be implemented in the system. The main challenge in classification with KNN is determining the proximity measure of an object and how to make a compact reference class. This paper studied the implementation of the KNN for the automatic transliteration of Javanese, Sundanese, and Bataknese script images into Roman script. The study used the KNN algorithm with the number k set to 1, 3, 5, 7, and 9. Tests used the image dataset of 2520 data. With the 3-fold and 10-fold cross-validation, the results exposed the accuracy differences if the area of the extracted image, the number of neighbors in the classification, and the number of data training were different.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67028418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Micro climate monitoring system in closed broiler cages based on the internet of things 基于物联网的封闭式肉鸡笼微气候监测系统
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-02-14 DOI: 10.14710/jtsiskom.8.2.2020.100-105
Damar Wicaksono, Taufiq Kamal
{"title":"Micro climate monitoring system in closed broiler cages based on the internet of things","authors":"Damar Wicaksono, Taufiq Kamal","doi":"10.14710/jtsiskom.8.2.2020.100-105","DOIUrl":"https://doi.org/10.14710/jtsiskom.8.2.2020.100-105","url":null,"abstract":"Smart agriculture has an emerged concept by using IoT sensors capable of providing various information about their field condition and conducting environmental monitoring to improve the yield of efficient crops. This research aims to develop a microclimate monitoring system in a closed house. The microclimate being monitored is the effective temperature, which is the temperature felt by broilers at that time in a fast area. In this research, IoT has been implemented using WeMos D1 R32 by sending sensor data to observe the effective temperature parameters as actual temperature, humidity, and wind speed into an MQTT cloud server. Microclimate control in the cage is based on effective temperature. The data can be displayed on a 16x4 LCD screen and accessed via an Android smartphone from anywhere and at any time.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67028367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
K-means-SMOTE for handling class imbalance in the classification of diabetes with C4.5, SVM, and naive Bayes 利用 K-means-SMOTE 处理 C4.5、SVM 和天真贝叶斯糖尿病分类中的类不平衡问题
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-02-14 DOI: 10.14710/jtsiskom.8.2.2020.89-93
H. Hairani, Khurniawan Eko Saputro, Sofiansyah Fadli
{"title":"K-means-SMOTE for handling class imbalance in the classification of diabetes with C4.5, SVM, and naive Bayes","authors":"H. Hairani, Khurniawan Eko Saputro, Sofiansyah Fadli","doi":"10.14710/jtsiskom.8.2.2020.89-93","DOIUrl":"https://doi.org/10.14710/jtsiskom.8.2.2020.89-93","url":null,"abstract":"The occurrence of imbalanced class in a dataset causes the classification results to tend to the class with the largest amount of data (majority class). A sampling method is needed to balance the minority class (positive class) so that the class distribution becomes balanced and leading to better classification results. This study was conducted to overcome imbalanced class problems on the Indian Pima diabetes illness dataset using k-means-SMOTE. The dataset has 268 instances of the positive class (minority class) and 500 instances of the negative class (majority class). The classification was done by comparing C4.5, SVM, and naïve Bayes while implementing k-means-SMOTE in data sampling. Using k-means-SMOTE, the SVM classification method has the highest accuracy and sensitivity of 82 % and 77 % respectively, while the naive Bayes method produces the highest specificity of 89 %.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":"8 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141209207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
RSA algorithm using key generator ESRKGS to encrypt chat messages with TCP/IP protocol 使用密钥生成器 ESRKGS 的 RSA 算法，通过 TCP/IP 协议加密聊天信息
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-02-07 DOI: 10.14710/jtsiskom.8.2.2020.113-120
A. Aminudin, Gadhing Putra Aditya, Sofyan Arifianto
{"title":"RSA algorithm using key generator ESRKGS to encrypt chat messages with TCP/IP protocol","authors":"A. Aminudin, Gadhing Putra Aditya, Sofyan Arifianto","doi":"10.14710/jtsiskom.8.2.2020.113-120","DOIUrl":"https://doi.org/10.14710/jtsiskom.8.2.2020.113-120","url":null,"abstract":"This study aims to analyze the performance and security of the RSA algorithm in combination with the key generation method of enhanced and secured RSA key generation scheme (ESRKGS). ESRKGS is an improvement of the RSA improvisation by adding four prime numbers in the property embedded in key generation. This method was applied to instant messaging using TCP sockets. The ESRKGS+RSA algorithm was designed using standard RSA development by modified the private and public key pairs. Thus, the modification was expected to make it more challenging to factorize a large number n into prime numbers. The ESRKGS+RSA method required 10.437 ms faster than the improvised RSA that uses the same four prime numbers in conducting key generation processes at 1024-bit prime number. It also applies to the encryption and decryption process. In the security testing using Fermat Factorization on a 32-bit key, no prime number factor was found. The test was processed for 15 hours until the test computer resource runs out.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":"48 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141209325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Identification of fat-soluble vitamins deficiency using artificial neural network 脂溶性维生素缺乏症的人工神经网络鉴定
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-01-31 DOI: 10.14710/JTSISKOM.8.1.2020.6-11
N. Sagala, C. Hayat, Frahselia Tandipuang
{"title":"Identification of fat-soluble vitamins deficiency using artificial neural network","authors":"N. Sagala, C. Hayat, Frahselia Tandipuang","doi":"10.14710/JTSISKOM.8.1.2020.6-11","DOIUrl":"https://doi.org/10.14710/JTSISKOM.8.1.2020.6-11","url":null,"abstract":"The fat-soluble vitamins (A, D, E, K) deficiency remain frequent universally and may have consequential adverse resultants and causing slow appearance symptoms gradually and intensify over time. The vitamin deficiency detection requires an experienced physician to notice the symptoms and to review a blood test’s result (high-priced). This research aims to create an early detection system of fat-soluble vitamin deficiency using artificial neural network Back-propagation. The method was implemented by converting deficiency symptoms data into training data to be used to produce a weight of ANN and testing data. We employed Gradient Descent and Logsig as an activation function. The distribution of training data and test data was 71 and 30, respectively. The best architecture generated an accuracy of 95 % in a combination of parameters using 150 hidden layers, 10000 epoch, error target 0.0001, learning rate 0.25.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44539087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distributed proxy cache replacement algorithm to improve web server performance 分布式代理缓存替换算法，提高web服务器性能
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-01-31 DOI: 10.14710/JTSISKOM.8.1.2020.1-5
M. Wijaya
{"title":"Distributed proxy cache replacement algorithm to improve web server performance","authors":"M. Wijaya","doi":"10.14710/JTSISKOM.8.1.2020.1-5","DOIUrl":"https://doi.org/10.14710/JTSISKOM.8.1.2020.1-5","url":null,"abstract":"The performance of web processing needs to increase to meet the growth of internet usage, one of which is by using cache on the web proxy server. This study examines the implementation of the proxy cache replacement algorithm to increase cache hits in the proxy server. The study was conducted by creating a clustered or distributed web server system using eight web server nodes. The system was able to provide increased latency by 90 % better and increased throughput of 5.33 times better.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67028180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adaptive seismic noise reduction using Wiener filter 基于维纳滤波器的自适应地震降噪
Jurnal Teknologi dan Sistem Komputer Pub Date : 2020-01-31 DOI: 10.14710/jtsiskom.8.1.2020.12-20
Sesar Prabu Dwi Sriyanto
{"title":"Adaptive seismic noise reduction using Wiener filter","authors":"Sesar Prabu Dwi Sriyanto","doi":"10.14710/jtsiskom.8.1.2020.12-20","DOIUrl":"https://doi.org/10.14710/jtsiskom.8.1.2020.12-20","url":null,"abstract":"Seismic noise disrupts the earthquake observation system due to the frequency and amplitude of seismic noise similar to the earthquake signal. The filter process is one of the methods that can be used to reduce seismic noise. In this study, the Wiener filter algorithm was designed with the Decision-Directed method for Apriori SNR estimation. This filter was chosen because it is adaptive, so it can adjust to environmental conditions without requiring manual parameter settings. The data used are earthquake signals that occur in the Palu area, Central Sulawesi, which are recorded on PKA29 temporary seismic station from February 3 to April 28, 2015. After each signal data has been filtered, then it is evaluated by calculating SNR differences before and after filtering, the signal's dominant frequency, and the cross-correlation of the signal before and after filtering. As a result, the Wiener filter is able to reduce the noise content in earthquake signals according to noisy frequencies before earthquake signals. The impact is that SNR has increased with an average of 8.056 dB. In addition, this filter is also able to maintain the shape of earthquake signals. This is indicated by the normalization value of the cross-correlation between signals before and after the filter which ranges from 0.703 to 1.00.","PeriodicalId":56231,"journal":{"name":"Jurnal Teknologi dan Sistem Komputer","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43990334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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