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Deny Zainal Arifin
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Jurusan Teknik Informatika Fakultas Sains dan Teknologi Universitas Islam Negeri Maulana Malik Ibrahim Malang Jalan Gajayana 50 Malang, Jawa Timur, Indonesia 65144
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INDONESIA
MATICS : Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology)
Published by Universitas Islam Negeri Maulana Malik Ibrahim Malang
ISSN : 1978161X     EISSN : 24772550     DOI : https://doi.org/10.18860/mat
Core Subject : Science,
Computer Science & IT
MATICS is a scientific publication for widespread research and criticism topics in Computer Science and Information Technology. The journal is published twice a year, in March and September by Department of Informatics Engineering, Faculty of Science and Technology, Universitas Islam Negeri Maulana Malik Ibrahim Malang, Indonesia. The journal publishes two regular issues per year in the following areas : Algorithms and Complexity; Architecture and Organization; Computational Science; Discrete Structures; Graphics and Visualization; Human-Computer Interaction; Information Assurance and Security; Information Management; Intelligent Systems; Networking and Communication; Operating Systems; Platform-Based Development; Parallel and Distributed Computing; Programming Languages; Software Development Fundamentals; Software Engineering; Systems Fundamentals; Social Issues and Professional Practice.
Arjuna Subject : Ilmu Komputer (semua kategori) - Aplikasi Ilmu Komputer
Articles 237 Documents
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Light Drop Resistor (LDR) as pH Sensor for Wastewater Treatment Imam Saukani; Eko Nuraini
MATICS Vol 14, No 1 (2022): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v14i1.13883

Abstract

The electroplating industry generates acidic or wet liquid wastes when operating. Improper waste treatment will cause severe problems for the environment. Under Article 1 Paragraph 7 of the 1997 Law of the Republic of Indonesia, environmental pollution is the entry/inclusion of living things, substances, energy, or other components into the environment or changes in the environmental order by human activities or natural processes. So that the quality of the environment decreases to a certain level, causing the environment becomes less or no longer function according to its designation. A light Drop Sensor (LDR) sensor is used to read the level of acidic or wet liquid waste. The resistance value of the LDR sensor will change directly proportional to the conditions of acidity or level of wetness, and this value will then be the basis for the following control processing. The data were collected by installing a series of LDR sensors with resistance and obtained the results as follows: the wastewater, which was very cloudy, dark, of the first and second filters, and clear, each of these conditions emitted voltages of 4.4 volts, 3.45 volts, 3.10 volts, 2.6 volts, and 0.2 volts.
Usability Analysis of Higher Education Information Systems (SIDIKTI) at Sjakhyakirti University Using Post-Study System Usability Questionnaire (PSSUQ) Nuril Ikhsanuddin; Rusmala Santi; Utami Mizani Putri
MATICS Vol 14, No 1 (2022): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v14i1.13385

Abstract

The Higher Education Information System (SIDIKTI) is a existing systems at Sjakhyakirti University which is used as a basis for the needs of the academic community to make it easier for operators, students and lecturers to control teaching schedules, take courses, view classrooms, and print semester study results. The system created needs to be investigated for its usability level. A high level of usability is usually closely related to the popularity and high utilization of the system by users. This study aims to analyze the Usability of SIDIKTI at Sjakhyakirti University using the Post-Study System Usability Questionnaire (PSSUQ). by having four response items, namely 2.504 overall, 2.502 sysuse, 2.509 infoqual and 2.59 intqual. From the results that have been obtained that SIDIKTI as a whole is good, and in terms of usability SIDIKTI is easy and convenient to use so that users become more productive, effective, efficient in using the system and the quality of SIDIKTI information can be well received by users, so it helps in completing work. This shows because PSSUQ has the principle of lower score high usability, where if the score obtained is smaller, the usability will be greater.
Improving UAV Radio Control System with 433 MHz Radio Wave Using Lo-Ra based on QCZEK Model Communication System Juniardi Nur Fadila
MATICS: Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) Vol 14, No 1 (2022): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v14i1.16370

Abstract

UAV must have a reliable control system considering the UAV is an unmanned vehicle that relies on human control on the ground. Most of control system used in UAVs uses a 2.4 GHz as it frequency. This frequency has disadvantaged for UAV because it is mainly used for Wi-Fi communication system so when users of UAV’s fly in urban areas where full of Wi-Fi system, there will be interference within UAV control system and Wi-Fi, so failsafe will often occur. From the theory, different frequencies produce different criteria for radiofrequency communication system to synchronize and manage and secure communication between transmitter and receiver. In this study, we will discuss the application of 433 MHz frequency for the control system for UAV. The goal of this research is to establish a reliable control system of UAV when used for the long-range mission. To make this control system, we use the Lo-Ra module with STM32 based Microcontroller designed for QCZEK TX/RX model communication. After several testing on the ground and the air, the purpose system serve 14 % longer distance than TBS system or market build system and 6 times longer distances than 2.4Ghz frequencies.
CRISP-DM Method On Indonesian Micro Industries (UMKM) Using K-Means Clustering Algorithm Yusuf Ansori; Cahya Wulandari
MATICS: Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) Vol 14, No 2 (2022): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v14i2.13760

Abstract

UMKM plays an important role in supporting the economy in Indonesia. As one of the steps to reduce poverty, the govwordernment should pay more attention to the growth of its UMKM based on existing data. Data of UMKM collected from 2014 to 2018 in several economic sectors such as the leather industry, Metal Industry, Woven Industry, Pottery Industry, Fabric Industry, Food and Beverage Industry, and Other Industry can be used as government guidelines in efforts to solve poverty problems by processing them using k-means algorithm. The research was carried out using the CRISP-DM method and K-Means algorithm to determine the cluster of provinces so that the policy or decision making can be made more wisely. By using RapidMiner, data processing can be done quickly. The result of the study shows that DBI values of each data using 5 as k are 0.308, 0.312, 0.259, 0.272, 0.333, 0.369, 0.289, and 0.266. Based on that, Jawa Timur and Jawa Tengah have a large industrial growth while Jawa Barat seems to start leaving traditional industries. Besides, the other provinces' industrial growth appears to be stable. It is expected that the government would make wise policies to support the growth of UMKM in Indonesia.
Design and User Experience Evaluation of Bersii Android-based Mobile Application User Interface Mirza Ramadhani; Achmad Aqil Susanto; Fauzan Mustofa; Viana Salsabila Tauda
MATICS: Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) Vol 14, No 2 (2022): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v14i2.16919

Abstract

The user interface has a substantial and influential role because it becomes a direct liaison between the application system and its users and shapes each user's perception of the Bersii application. Bersii application is created to reduce single-use plastic waste in Indonesia to build and increase public awareness of the importance of protecting the environment. The Bersii mobile application has features such as product refills to reduce the use of plastic waste. This paper designs the user interface (UI) of the Bersii mobile application for buying refill products. The user interface (UI) design results will be tested using usability and User Experience (UX). The usability test uses the System Usability Scale (SUS), and the UX test uses the User Experience Questionnaire (UEQ). The results of usability testing obtained a score of 79, which was included in the category “good". In each aspect of the UEQ test, it obtained the following scores:  attractiveness 2,11, perspicuity 1,71, efficiency 1,98, dependability 1,89, stimulation 2,01, and novelty 1,45. Overall, the results of the UEQ testing were included in the category "good”.
SCRUM Methodology Adoption in Designing Digital MSME Empowerment Application Fransiska Sisilia Mukti; Fadhli Almu’iini Ahda; Sunu Jatmika
MATICS: Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) Vol 14, No 2 (2022): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v14i2.17780

Abstract

COVID-19 pandemic has significantly reduced most of MSME revenue, including Pelangi Nusantara Singhasari Foundation (PELANUSA). Market demand has decreased drastically, many activities and production have been delayed, which have an impact on the decline in sales turnover. This forces all activities to shift to the digital realm to ensure business continuity. In fact, the process of migrating community activities from conventional systems to digitalization poses a new problem for the management. The use of platforms that are still fragmented, the lack of knowledge of digital marketing concepts, to the limitations of the management in carrying out empowerment activities, especially for members of the disabled community. Seeing this phenomenon, Institut Asia Malang collaborated with PT. Ina Gata Persada proposed an innovative solution in the form of a digital empowerment application called PELAWONS (PELANUSA for Women and Disabilities). To achieve the suitability of the purpose of PELAWONS with functionality and timeliness, it takes an analysis and proper software design. SCRUM is considered to be able to produce good quality software according to user desires, can be used in large and small projects, and easy to adopt changes. We developed PELAWONS refers to the five main steps on SCRUM process: establishing SCRUM team, defining list of the product backlogs, arranging the sprint phase, analyzing the progress through daily scrum, and evaluating the result with sprint review. SCRUM methodology adoption in designing PELAWONS proven to be able to accelerate the application development process and reduce the risk of project failure through system flexibility.
Enhance User Interface to Deaf E-Learning Based on User Centered Design Fardan Zamakhsyari; Achmad Teguh Wibowo; Mohammad Khusnu Milad
MATICS: Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) Vol 14, No 2 (2022): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v14i2.17703

Abstract

Abstract—The cognitive learning approach through visual media is a characteristic of learning for deaf students because these students can receive learning more quickly. However, this method became an obstacle when this process was online conducted because of the effect of the Covid-19 pandemic. Based on the explanation, a need for media learning based on interactive media can help students in the studying process. This research focuses on developing learning media using User Center Design (UCD) method to a center for the development system. In this research, we develop a user interface (UI) for deaf students, especially in the Putra Asih inclusive school in the city of Kediri, Indonesia. The evaluation of this research using ISO-9241 shows the effectiveness of using the application obtained 87,15%, effectiveness of the user interface design obtained 80,05%, and user satisfaction obtained 71,18% where all parameters make sense and acceptable based on a response from the users.
mVIF Package: A Tool for Detecting Multicollinearity without Dependent Variables Angga Dwi Mulyanto
MATICS: Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) Vol 14, No 2 (2022): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v14i2.20948

Abstract

Abstract— This article discusses the Variance Inflation Factor (VIF), a tool used to test the assumption of non-multicollinearity in regression analysis. VIF measures the correlation between variables in a regression model and its impact on the accuracy of analysis results. The article highlights that VIF can also be used to determine the presence of multicollinearity among variables in various types of analyses, including Hierarchical Cluster Analysis. While there are several programs or packages available to calculate VIF, they usually require a dependent variable input. To address this issue, the author aims to create a new package using Python to calculate VIF without the need for a dependent variable input. The program calculates VIF using the sequential elimination method, which involves removing one variable at each iteration of the for loop. In use, the user needs to input data in the form of a matrix, and the program will return a list of VIFs and information about the presence of multicollinearity in the data. The program provides an alternative method for evaluating multivariate data and the presence of multicollinearity, making the testing process easier and faster for data analysts and researchers.
Eye Aspect Ratio based on Histogram Oriented Gradient and Linear Support Vector Machine to Microsleep Detection Mohammad Afinil Maula; Achmad Teguh Wibowo; Muhammad Andik Izzudin
MATICS: Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) Vol 15, No 1 (2023): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v15i1.20186

Abstract

Traffic accidents are caused by several factors, especially due to driver fatigue. To minimize accidents caused by human negligence, developing a prototype microsleep detection system to trigger an alarm is necessary. This research uses Histogram Oriented Gradient and Support Vector Machine methods to detect objects. The programming language used is Python, using the dataset from the Idlib face landmark as a marker in the face point area, which will then be calculated based on the eye aspect ratio. This system is implemented using video input captured using a webcam in real-time. The output of this system uses a buzzer to alert the driver. In this study, the test results were obtained well, carried out with 2 test scenarios with a distance of 40cm - 100cm and testing light levels of 33 lux to 226 lux. From these results, the accuracy results were obtained at 88% each.
Patch based Classification using ResNet for Land Cover changes detection of Batu City Hisyam Fahmi
MATICS: Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) Vol 14, No 2 (2022): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/mat.v14i2.20946

Abstract

The purpose of this study is to analyze the variations in land cover in Batu City, East Java Province, Indonesia, utilizing a patch-based classification strategy and deep learning. This study provides a preliminary estimation of land cover change in Batu City. The research also highlights the possibility of using deep learning techniques to analyze land use and land cover (LULC) variations in other urban areas with greater precision and efficiency. The EuroSAT dataset is used to train a classification model for patch labeling using the ResNet-50 architecture. Comparing the land cover of Batu City in 2001 and 2022 allows us to detect LULC changes, with almost 50% of the patch changing. The results indicate that ‘Housing’ and ‘Road’ become the most changed categories, while the vegetation areas decrease in number. The results demonstrate that the ResNet-50 architecture is capable of classifying patches and detecting LULC changes with an accuracy of 88% and an execution time of approximately 126.53 seconds.

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