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Tri A. Sundara
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The Indonesian Journal of Computer Science
Published by STMIK Indonesia Padang
ISSN : 25497286     EISSN : 25497286     DOI : https://doi.org/10.33022
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Engineering
The Indonesian Journal of Computer Science (IJCS) is a bimonthly peer-reviewed journal published by AI Society and STMIK Indonesia. IJCS editions will be published at the end of February, April, June, August, October and December. The scope of IJCS includes general computer science, information system, information technology, artificial intelligence, big data, industrial revolution 4.0, and general engineering. The articles will be published in English and Bahasa Indonesia.
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 1,114 Documents
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Peran Pembelajaran Daring, Komunikasi, Dan System E-Learning Terhadap Motivasi Belajar Mahasiswa Achmad Rizky Fambudianto; Sofia Amriza, Rona Nisa; Ardianing Kusuma, Dwi Januarita
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3049

Abstract

Online learning is the main learning system amid government policies that have closed face-to-face learning activities as a result of the emergence of Covid-19. Based on pre-study data, it shows that the obstacles that interfere with the learning process are learning content that is less attractive, internet networks that are less supportive, and inadequate digital devices. In the communication aspect, problems that arise, such as students who cannot ask questions directly to lecturers, and online learning which is not as interactive as face-to-face learning. Meanwhile, from the aspect of the E-Learning System, the problems that arise are the content, content, or appearance that is less attractive and interactive, information that is not optimal, not up-to-date, and E-Learning is less stable. This research was conducted to analyze the role of online learning, communication, and E-Learning systems on learning motivation. The approach is carried out using quantitative methods and processed using Structural Equation Modeling Partial Least Squares (SEM-PLS). As a result, it was found that the facilities and knowledge of the teacher had a significant positive effect on students' learning motivation with p-values ​​of 0.00.
The Evaluation of Audio Steganography To Embed Image Files Using Encryption and Snappy Compression Ilham Firman Ashari
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3050

Abstract

Images are messages that can be kept secret, so security measures are needed. Techniques that can be used are cryptography and steganography. Steganography can be combined with cryptography to increase security. Images have a relatively large size; Therefore, a compression algorithm is needed. The compression algorithm used is lossless compression. MP3 audio is used as the cover media because it is the most popular audio file. In this study, aspects of imperceptibility, fidelity, recovery, payload, and robustness will be evaluated. The imperceptibility aspect is carried out by observing the RGB Histogram of the image and the audio frequency spectrum, the test results show that there is no significant difference between the audio before and after the image message is inserted. In the fidelity aspect, the PSNR result is above 30 dB. In the payload aspect, the file size after being encrypted with AES and RC4 is larger than just encoded using the base64 encoder. From the recovery aspect, the test results show a BER value of 0. Testing the robustness aspect by manipulating the bitrate, channel mode, and sample frequency, the test results show that the message cannot be extracted.
Medan City Tourism Geographical Information System Using Dijkstra Algorithm Method Zufria, Ilka; Harahap, Aninda Muliani; Rkt, M Ferdiansah
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3052

Abstract

Medan City Tourism Office in providing tourism location information is currently still using the official website that only displays explanations about tourism and mapping of tourist location points only, the current system is less efficient and makes tourists or the public not know much about the location or route to be passed and search for tourist attractions in the city of Medan. Researchers try to solve the problem by implementing a geographic information system implemented with OSM (Open Street Map). In this study, data collection using qualitative methods and applications was developed using waterfall methods. The results of the analysis will be described using UML (Unified modelling language). The results of this study show that the geographical information system of tourism to find out the location point and the nearest route can provide benefits to tourists and local people to travel in the city of Medan.
Perancangan dan Integrasi Smart Touch Presenter Kit-Portable Interactive Surface dalam pembelajaran Hybrid Learning System Ashadi, Imam; Basuki, Achmad; Dewantara, Bima Sena Bayu
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3053

Abstract

The health crisis caused by the covid-19 virus outbreak has given birth to online learning in all parts of the world until the covid-19 pandemic ends, so that in this condition the government urges the government to innovate and adapt related to the use of available technology to support the learning process. All elements in learning such as teachers, lecturers and students are required to carry out a large-scale transmission that has never been done before from conventional learning (offline) to online-based learning. Some of the obstacles that often occur are caused by inadequate IT learning support infrastructure so that there is a range of learning losses. For this reason, learning IT devices that are cheap, ergonomic and fulfill all aspects of learning are carried out to solve the problems in this research, thus this paper proposes a device, namely smart projection low-cost interactive surface (SP-LCIS) as one of the solutions for supporting devices in implementation of Hybrid Learning System learning. In this research observation conducted at SMKN 3 Jember it was found that 99% of the devices run very well and provide added value in learning and 1% feel that they increase their preparation time, such as having to learn how to operate them effectively.
Penerapan Composite Performance Index (CPI) Sebagai Metode Pada Sistem Pendukung Keputusan Seleksi Penerima Beasiswa Satria, Budy; Sidauruk, Acihmah; Wardhana, Raditya; Al Akbar, Abdussalam; Ihsan, M. Arinal
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3056

Abstract

The selection process for scholarship recipients in higher education requires a measurable system. The problem that has been happening is that the procedures carried out by the scholarship provider still use a manual file examination system. Composite performance index is the method used in this study. The purpose of this study is to create a decision support system for the selection of scholarship recipients to be more systematic and time efficient in the process. There are 10 alternatives and 4 criteria, namely parental income, GPA, electricity usage ,and semesters. The results of this study were obtained 5 highest values are A7 t with a value of 235.00 rank 1, A4 with a value of 200.00 rank 2, A1 with a value of 134.14 rank 3 sequences, A5 with a value of 120.00 ranks 4, and A8 with a value of 91.67 sequences 5.
Implementasi Algoritma ARAS Pada SPK Untuk Menentukan Peringkat Dosen Terbaik Alex Rizky Saputra; Supriatin
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3057

Abstract

In the world of higher education, lecturers are one of the main components in building quality and quantity. Good quality will give good results as well, to improve the quality of each lecturer, it is necessary to have an award given to lecturers from the campus so that it becomes a motivation for lecturers to improve the quality given to students and the community. Amik Mitra Gama is a private campus located in the Duri Riau area, in this case to improve the quality of education one of the steps taken is to give awards and appreciation to the best lecturers who will be selected every year. To realize this, we need an easy calculation system that is carried out in the form of ranking according to the final value, therefore a decision support system using the ARAS method is chosen because it is very appropriate for the selection process and provides convenience in the calculations which are determined based on ranking. The decision support system using the ARAS method uses 8 criteria that are set as a reference in determining the best lecturers, namely Recent Education, Lecturer Functional Position, Lecturer Certification, Number of Journal Publications, Roles in Research, Journal Publication History, Research Grants, and Community Service. There are 10 lecturers in the field of computers who will be used as alternative data with lecturer codes D01, D02, D03, D04, D05, D06, D07, D08, D09, D10. The results obtained from this study are the lecturer code D04 = 0.0974, D06 = 0.0965, D09 = 0.0932, D07 = 0.0903, D03 = 0.0901 was selected as the best lecturer in 2021/2022. So that the results of this study can help the campus to determine the best lecturers every year fairly and be selected based on rankings.
Meta-Interface Analysis for Interaction in Mobile Augmented Reality Firmanda, Ardiman; Sukaridhoto, Sritrusta; Rante, Hestiasari; Miranto, Cahya; Evianita Dewi Fajrianti; Prasetyaningsih, Sandi
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3058

Abstract

Mobile Augmented Reality has expanded including the cultural heritage sector. Among the options offered is the digitization of cultural heritage. Multiple technical breakthroughs has implemented, including hand gesture recognition and body tracking, into mobile augmented reality systems. The success of these improvements depends on a good user interface. Meta User Interface (Meta-UI) allows significant information to be displayed without interfering with system operation. The results of the analyses that the Meta-UI user interface could aid users in employing hand gestures and body motion capture on this mobile augmented reality without any issues and could deliver information about batik efficiently. PIECES Framework testing confirmed this, with a satisfaction score of 4.40 to 4.55. Using the PIECES Framework concepts and questionnaire that focus on user satisfaction with mobile augmented reality, the score indicates that the user is satisfied.
Implementasi Modul Pembelajaran Berbasis Virtual Reality untuk Pendidikan Kedokteran Al Hafidz, Ilham Achmad; Sukaridhoto, Sritrusta; Muhammad Udin Harun Al Rasyid; Rizqi Putri Nourma Budiarti; Rachma Rizqina Mardhotillah; Rizki Amalia; Evianita Dewi Fajrianti; Naufal Adi Satrio; Amma Liesvarastranta Haz
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3059

Abstract

The Corona-Virus Disease 2019 (COVID-19) pandemic has impacted all levels of society and has disrupted all aspects of life, including education. On the other hand, the current crisis is rekindling the need for online learning opportunities and virtual education programs. Most medical schools have responded to this by turning to online or video-based learning. In the face of a pandemic, maintaining standards in medical education, keeping clinical knowledge on track, and minimizing assessment disruptions are complex tasks to complete. This new environment requires adaptation to prepare future doctors for their roles better. This research will implement an immersive medical learning platform by integrating the real immersive experience of Virtual Reality (VR) into medical education. The use of VR in this study has given satisfaction to users through the PIECES framework analysis by getting a score between 3.9 - 4.2 from the measurement of user satisfaction which means that users are satisfied with the offerings and services of this platform.
Perancangan Alat Pemberi Pakan Ikan Otomatis dengan RTC DS3231 Berbasis Microcontroller Arduino Uno Yuda Febryanto; Teuku Radillah; Kiki Ameliza
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3063

Abstract

Fish feed is a mixture of various food ingredients (commonly called raw materials), both vegetable and animal, which are processed in such a way that they are easy to eat and digest as well as a source of nutrition for fish that can produce. energy for their lives. Fish farming is a hobby that many people enjoy from the past until now because of its easy care and maintenance. It's just difficult when a person travels for a long time to several days and thinks of feeding his pet fish. This research was designed with library methods and practical methods. The result of this research is that by making a tool that can make it easier for someone to feed, then the time it takes for the tool to provide 2.4 grams of feed is 1 second. with this automatic feeding tool it can make it easier for ornamental fish fans in feeding fish from manual system moved to automatic system.
Sistem Pendukung Keputusan Menentukan Mitra Berprestasi di Halal Mart Menggunakan Metode AHP – WASPAS Aprilia, Nia; Zufria, Ilka
The Indonesian Journal of Computer Science Vol. 11 No. 2 (2022): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v11i2.3070

Abstract

PT Herbal Penawar Alwahida Indonesia, known as HNI-HPAI, is one of several companies in Indonesia as a Halal Network business that focuses on providing various quality and halal consumer goods products. With the number of partners spread throughout Indonesia, human resource management is important for the development and progress of the company. Along with its development, the selection of outstanding partners has so far been done manually, which is directly selected by the mentor from the partner and does not pay attention to the criteria. Therefore, we need a decision support system (DSS) in determining partners who excel by taking into account the weight of the criteria. That way it produces a clear and time-consuming calculation where the calculation begins to determine the variables used to calculate the value of errors or optimize the estimation or selection of the highest and lowest values.

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