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Journal of Information Technology and Computer Science
Published by Universitas Brawijaya
ISSN : 25409433     EISSN : 25409824     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering
The Journal of Information Technology and Computer Science (JITeCS) is a peer-reviewed open access journal published by Faculty of Computer Science, Universitas Brawijaya (UB), Indonesia. The journal is an archival journal serving the scientist and engineer involved in all aspects of information technology, computer science, computer engineering, information systems, software engineering and education of information technology. JITeCS publishes original research findings and high quality scientific articles that present cutting-edge approaches including methods, techniques, tools, implementations and applications.
Arjuna Subject : -
Articles 284 Documents
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Architectural Design of Representational State Transfer Application Programming Interface with Application-Level Base64-Encoding and Zlib Data Compression Pinandito, Aryo; Kharisma, Agi Putra; Jonemaro, Eriq Muhammad Adams
Journal of Information Technology and Computer Science Vol. 8 No. 3: December 2023
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.202383619

Abstract

Representational State Transfer (REST) is an architectural style that underlies the protocol of HyperText Transfer Protocol (HTTP)and is used by web applications. The implementation of REST principles in web services is often known as RESTful API. The standard communication used in RESTful APIs uses HTTP without involving data compression. There are quite a lot of RESTful API clients in the form of mobile applications that use metered networks. Thus, reducing the required bandwidth during transmission is suggested to be beneficial. The data compression technique is widely known to reduce data size, but this additional step may yield side effects such as increased memory usage and processing time. This study aims to investigate how the data compression process, which specifically uses Zlib and Base64 encoding, may put additional load on the whole process of delivering content to a RESTful API. The performance and characteristics in terms of bandwidth saved when distributing JSON data from a RESTful API in compressed format are also be investigated. According to the experiment result, it is suggested that the compression process can reduce network bandwidth by up to 66% with negligible additional memory usage for the compression and decompression processes.
Implementation of Rainfall Monitoring through an Information System Based on Radar and Satellite Image Data using the Kalman Filter Method Sugiarto; Putra, Maulana; Syaefudin, Mohamad Anwar; Rosid , Mohammad Syamsu; Handoko, Djati
Journal of Information Technology and Computer Science Vol. 9 No. 2: August 2024
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.92620

Abstract

Rainfall information is important for water resource management and disaster mitigation, so a monitoring system is needed that can provide spatial information. A rainfall monitoring information system uses radar and satellite images based on the Kalman Filter method is a website information system that aims to make it easier for users to monitor rainfall from a latitude and longitude coordinate point. The rain intensity data is in pixel colours (Red, Green, Blue) from the MAX (dBZ) product image of the EEC Weather Radar in Lampung and cloud top temperature data from the Himawari satellite. The image pixel colour data is then processed using the Kalman filter and displayed on the integrated website. The website's appearance is designed to be interactive to accommodate user customization, and the data displayed has been adapted to geographic information systems. Implementing a rainfall information system based on weather radar and satellite imagery disseminated through the website is expected to help users, both the general public and stakeholders, access real-time weather information, especially rainfall.
Classifying Application User Comments Using the Improved K-Nearest Neighbor and BM25F Weighting Methods Indriati, Indriati; Rahman, Muh Arif; Arwani, Issa; Muflikhah, Lailil
Journal of Information Technology and Computer Science Vol. 9 No. 2: August 2024
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.92622

Abstract

Mobile JKN is an application developed by an Indonesian state-owned health insurance company, BPJS Kesehatan. The application is developed to provide easier access and more optimal service for its participants. The application allows users to access various information related to national health insurance programs anywhere, anytime. Despite the benefits this application offers, Mobile JKN received low ratings from the users. However, the ratings are sometimes irrelevant to the comments. We proposed an application to automatically review the comments based on ratings and comments, both negative and positive, using the Improved K-Nearest Neighbor (IKNN) classification algorithm with the BM25F weighing method. The initial stage of the algorithm involved document preprocessing, the document consisting of comments and rating were preprocessed to obtain the term. After that, BM25F weighing was applied to find the similarity between documents. The document was then classified using IKNN based on its BM25F weight. The test result showed that the highest accuracy rate was 0.925, obtained from parameter k=20 on IKNN with k1=1.2, Bs=0.75, and BM25F weight of 2 and 5. The result indicates that this method manages to classify the document properly
Cover and Table of Content Purbosari, Lina
Journal of Information Technology and Computer Science Vol. 8 No. 3: December 2023
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.202383647

Abstract

Cover and Table of Content
Utilizing a Routing Table of Proactive MANET Routing Protocol to Monitor a Group of People Mobility Trisnawan, Primantara Hari; Siregar, Reza Andria; Robbani, Dwindra Helmi
Journal of Information Technology and Computer Science Vol. 9 No. 2: August 2024
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.92648

Abstract

In general, a special group has a leader who is responsible for his or her members. The problem that often occurs in groups is the loss of members due to leaving the group. To overcome this problem, it is necessary to build a system that can help the leader monitor the members of his or her group by getting an alarm warning if there are members who have the potential to leave the group or even those who have left the group. Existing solution is using such one hop/direct communication, which may monitor each member too close. Then, our proposed system to overcome the limitation of a single hop wireless range is to monitor each member to some extent to reach multiple hops of wireless range. The system is developed using one of proactive MANET routing protocol, ie the Destination Sequenced Distance Vector (DSDV) protocol, and utilizes hop number information in the routing table to detect slave nodes (members' equipment) that have three or more hops from the master node (leader's equipment) or even if the slave node is lost. The testing on this system is carried out functionally and non-functionally. The results of functional testing show that the master node can produce an alarm warning in the form of a buzzer sound intermittently and the LED light flashes if there is a slave node with three number of hops or more and can produce an alarm warning in the form of a buzzer sound and the LED light flashes continuously if some slave nodes are lost. Routing table updates on this system have an average time of once every 92.445 seconds. The results of non-functional testing show that the average round trip time (RTT) required for the node to send broadcast messages is 0.208 seconds with 23 bytes of data and the average round trip time (RTT) to send SendMeYourNeighbour messages is 0.215 seconds with 43 bytes of data. Keywords: Routing table; Monitoring Mobility; Dynamic routing protocol; MANET; multihops; DSDV
Impact of IT Leadership on Transformation of the Role of IT in Improving Individual Tax Return Reporting Compliance at the Directorate General of Taxes Ariani, Septi; Rahmawati Wahab, Aliya; Dwi Fajar Maulana, Yudhi; Wijayanti, Fitri; Swari Mahardika, Mainar; Rifki Shihab , Muhammad
Journal of Information Technology and Computer Science Vol. 9 No. 3: December 2024
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.93337

Abstract

The Directorate General of Taxes (DGT) applies for technological advances in filing applications for Tax Return reporting (TRR), which was previously carried out manually. This enables DGT to reduce administrative work. IT is inseparable from the presence of IT leadership that can direct existing resources to get maximum results. The problems faced at DGT, there are still problems regarding late and even not submitting taxpayers TRR. It can affect the level of TRR compliance. This study aims to determine the role of IT leadership in supporting the role of IT to improve TRR compliance. The results showed that the increase in online TRR compliance was due to a massive campaign carried out by the Head Office, Regional Offices, and Tax Offices. This study indicates differences in the IT role in several phases of the TRR service development at DGT. The success of IT support in achieving TRR was inseparable from the IT Leadership approach applied at DGT. It showed that the increase in the role of IT in an organization had to be following the strengthening of IT Leadership within an organization and support to driver started from the reformation and efficiency of IT within the organization.
Analysis of Entrance Test Results Effect on Student's Performance using Multiple Linear Regression Gultom, Dito William Hamonangan; Supianto, Ahmad Afif; Bachtiar, Fitra Abdurrachman; Krisnandi, Dikdik; Kusumo, R. Budiarianto Suryo; Heryana, Ana
Journal of Information Technology and Computer Science Vol. 9 No. 3: December 2024
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.93343

Abstract

The entrance selection test is the starting gate to find out the ability of prospective students. Student performance, measured by the Academic Achievement Index and the length of study, are two factors that measure the quality of a department or faculty. Therefore, it is necessary to analyze the effect of the entrance test results on student performance. The Faculty of Computer Science at Brawijaya University has various types of tests that prospective students must take in order to be accepted into the Computer Science Master's Program. Broadly speaking, these types of tests consist of Interview Tests, Academic Potential Tests, TOEFL Tests, Field Ability Tests, Psychological Tests, and S1 GPA. Regression analysis using the Multiple Linear Regression method is applied in the first 4 semesters of lectures. Tests conducted on the regression model resulted in a Mean Square Error value of 0.0321 in the first semester, 0.0273 in the second semester, 0.015 in the third semester, and 0.031 in the fourth semester, and 1.5301 for the graduation semester. While the K- Fold Cross Validation score resulted in a score of -0.044 in the 1st semester, 0.2838 in the second semester, 0.9037 in the third semester, and 0.9011 in the fourth semester, and -0.2786 in the graduation semester. In addition, dashboard visualization gets an average score of 68.33, which means it can be accepted and can be used by the Academic Team for the Master's Program in Computer Science at Brawijaya University.
Development of Interactive Multimedia-Based Learning Media for Basic Graphic Design Subjects with the ADDIE Model Guidelines at SMK Negeri 5 Malang Husen, Dania Lazuardi; Herlambang, Admaja Dwi; Wijoyo, Satrio Hadi
Journal of Information Technology and Computer Science Vol. 9 No. 3: December 2024
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.93349

Abstract

This research aims to explain the results of the needs analysis in developing interactive multimedia-based learning media so that it can improve learning outcomes and support the learning interaction process and can motivate students during learning activities. This learning media was built by adapting the ADDIE model which consists Analysis, Design, Development, Implementation, and Evaluation phase. The results of this research test are the learning outcomes of students increase after using learning media. Hypothesis testing with Paired Sample T-Test technique produces a hypothesis that there are differences in learning outcomes due to the use of learning media. The test results based on the use of learning media by students resulted in an average eligibility of media in support of learning interactions of 85.81% and learning motivation of 87.05%. That is, learning media can be categorized as very feasible to be used to build learning interactions and learners' learning motivation.
Vocational High School Students’ Creative Thinking Skills Comparison Between Project-Based Learning and Problem-Based Learning Instructional Process in Software Development Subjects Herlambang, Admaja Dwi; Aditya Rachmadi, Mohammad Adnan; Prima Zulvarina
Journal of Information Technology and Computer Science Vol. 9 No. 3: December 2024
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.93490

Abstract

The study compares the creative thinking skills of vocational high school students who experience Project-Based Learning (PjBL) and Problem-Based Learning (PBL) instructional processes in Software Development subjects. The research was conducted at one of Malang City, Indonesia’s information technology primary vocational high schools (SMK TI). The study used a randomised pretest-posttest control group design experimental research design. The research group was divided into two groups, namely the experimental group (PjBL) and the control group (PBL), where each group consisted of 36 students. The data generated in the study was obtained by conducting a test of creative thinking skills. A comparative analysis of creative thinking skills data in the experimental and control groups was performed using Wilcoxon’s Test. Comparative analysis of pre-test data in the experimental (M=72.36; SD=9.29) and control (M=70.97; SD=9.39) groups resulted in a p-value of more than 0.05. It means there are no differences in pre-test scores between the two groups. In contrast, the p-value for post-test data from the experimental (M=94.02; SD=4.27) and control (M=86.80; SD=6.98) groups was less than 0.01. It means there are no differences in post-test scores between the two groups. Comparative analysis of pre-test and post-test data from the experimental group resulted in z(35)=5.26; p < 0,01; d=3.00. Comparative analysis of pre-test and post-test data from the control group resulted in z(35)=5.26; p < 0,01; d=1.91. According to the findings of the analysis, PjBL and PBL impact students’ creative thinking skills. Compared with effect size, the  PjBL effect is more significant than PBL.
The Evaluation of the Successful Integration Implementation of Academic Information System I-Gracias and CeLOE Learning Management System at Telkom University Using DeLone and McLean Model Ramadhan, Miftah; Trias Hanggara, Buce; Hayuhardhika Nugraha Putra, Widhy
Journal of Information Technology and Computer Science Vol. 9 No. 3: December 2024
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jitecs.93502

Abstract

Telkom University has implemented data integration on the I-Gracias Academic Information System with the CeLOE Learning Management System (LMS) to make it easier for students to carry out the course registration process. However, each semester, the course registration process still has several problems. This research aims to assess the success rate of implementing the integration between the I-Gracias and CeLOE LMS systems based on student perceptions and analyze the correlation between variables from the DeLone and McLean models. The research used the descriptive analysis and Rank Spearman correlation analysis involving 100 respondents. This research collected data by purposive sampling technique and distributing questionnaires using Google Forms. The results of the descriptive analysis obtained an overall proportion of 81.75%, which is in the High category. However, there are still two variables with values below the mean, service quality with the lowest indicator of responsiveness and user satisfaction with the lowest indicator of effectiveness, expectations, and satisfaction with system performance. The results of the correlation analysis show that the correlation between system quality and user satisfaction in the Very Strong category, system quality and use in the Moderate category, service quality and user satisfaction in the Moderate category, service quality and use in the Low category, and other correlation variables in the Strong category. The success of implementing the integrated system between I-Gracias and CeLOE LMS can be increased by implementing 8 recommendations for improvement on indicators that are still below the mean.

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