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Journal of Computer Science and Informatics Engineering (J-Cosine)
Published by Universitas Mataram
ISSN : 25408895     EISSN : 25410806     DOI : -
Core Subject : Science,
Computer Science & IT
Journal of Computer Science and Informatics Engineering (J-Cosine) is a journal that is published by Informatics Engineering Dept., Faculty of Engineering, University of Mataram (Program Studi Teknik Informatika, Fakultas Teknik Universitas Mataram) under online and print ISSN: 2541-0806 and 2540-8895, respectively J-Cosine is also blind and peer-reviewed journal, which the reviewer processes are carried out by at least 2 reviewers who are decided by associate editor. The J-Cosine is published bi-annually.
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Articles 159 Documents
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Sistem Monitoring Kualitas Udara di Ruangan Tertutup Berbasis IoT Menggunakan Sensor MQ-135 dan GP2Y1014AU0F Sujiarta, Ardi; Wedashwara W, I Gede Putu Wirarama; Zubaidi, Ariyan
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 7 No 2 (2023): Desember 2023
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v7i2.298

Abstract

Air quality is now decreasing, mainly in urban areas and industrial centers. Decreasing air quality can occur indoors, especially in a closed room such as a kitchen room. Conditions like this will certainly be very detrimental because it can interfere with health, disturbing comfort and can damage property. In this study, a system was made to monitor air quality, especially in closed rooms by utilizing IoT technology using MQ-135 and GP2Y1014AU0F sensors. Based on tests conducted in the kitchen room, when cooking the gas status was in the medium category and the dust status was in the good category, whereas after cooking the gas and dust status were in the good category. Then in the warehouse room, the gas status is in the medium category and the dust status is in the unhealthy category. Based on the test results, the system built has been running well and is possible to be implemented.
Adaptive Classroom Berbasis IoT, Manajemen Penggunaan Air Conditioner Secara Otomatis: Adaptive Classroom Based of IoT, Automatic Usage Management of Air Conditioner Muhamad Pahrurrozi; I Gde Putu Wirarama Wedashwara W; Ariyan Zubaidi
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 8 No 1 (2024): Juni 2024
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v8i1.331

Abstract

Temperature and humidity are one of the comfort factors. According to the SNI standard, the comfortable temperature range is at 20.5°C-27.1°C. If the temperature is above 27.1°C, an Air Conditioner (AC) is needed to get the effective thermal comfort. AC installed in each PSTI FT UNRAM classroom is operated manually. This research implements Internet of Things (IoT) for automatic AC usage management. This IoT device is made using PIR sensor and DHT22 sensor, the MQTT protocol for data communication between the IoT device and the web system. Based on the testing scenario for the classroom containing students and the empty classroom that has been done, the IoT device is able to manage the AC usage automatically, so that the classroom can be called adaptive classroom. From the MOS testing that has been done, a value of 4.57 from a scale of 5, the system is feasible to use.
Information System for Optimization of 3 Kilograms Elpiji Gas Distribution Using the Least Cost Method (Case Study in PT. Hidayat Energi Putratama) Albar, Moh. Ali; Baiq Rokyatul Jannah; Afwani, Royana
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 7 No 2 (2023): Desember 2023
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v7i2.453

Abstract

PT. Hidayat Energi Putratama is a 3 kilograms elpiji gas distribution agent that distributes elpiji gas to the base which then forms the base and will distribute to the retailer. Currently the calculation of distribution costs at PT. Hidayat Energi Putratama has not implemented an information system that can manage the calculation of distribution costs and the costs incurred are not optimal, so a system is needed to calculate distribution costs. The purpose of this research is to design an information system optimization of the distribution of 3 kilograms elpiji gas at PT. Hidayat Energi Putratama uses the least cost method that can perform calculations to help companies find out where the 3 kilograms elpiji gas should be distributed so that the costs incurred are kept to a minimum. From the results of research and calculations using the least cost method, the results obtained that the cost generated by the system is Rp. 1,120,600 less than the original cost incurred by the company of Rp. 1,500,000 so it can be said that the cost generated by using the least cost method is optimal. System testing is done by black box testing, theoretical calculations, and Mean Opinion Score (MOS) testing. The results of black box testing and theoretical calculations show that the system is running well and correctly. In the MOS test conducted on 30 respondents, the average result was 4.28 on a scale of 1 to 5. These results indicate that users are satisfied with the system built.
Design Violence Reporting System Households in Mataram City Tria Ningrum, Farah; Nadiyasari Agitha; Noor Alamsyah
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 7 No 2 (2023): Desember 2023
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v7i2.465

Abstract

Currently, cases of domestic violence are social and humanitarian problems that need attention. In 2020, the most dominant forms of domestic violence are psychological violence as much as 40%, sexual violence 26%, physical violence 22%, and economic 12%. The number of domestic violence cases in Indonesia also increased in 2019 from 1,419 cases to 2,389 cases in 2020. The increasing number of cases of domestic violence should be a serious concern for all parties. The Regional Technical Implementation Unit for the Protection of Women and Children (UPTD PPA) is a regional technical implementing unit formed by the regional government that can provide services for women and children who experience domestic violence, services, special protection, consultation, and others. The process of reporting domestic violence in Mataram City is still done conventionally, where people still need to visit the office to report incidents of domestic violence. Then the UPTD PPA will conduct a team discussion for the next action. From the current reporting process flow, the Mataram City UPTD PPA also still takes a long time to follow up on the domestic violence report. So there is still a lack of facilities and media that can assist the community in reporting domestic violence and assist the UPTD PPA in following up on reporting domestic violence. With the development of existing technology and the increasing number of people using android gadgets, from the problems above, researchers will design and build a Domestic Violence Reporting System in the City of Mataram to make it easier to report domestic violence directly without having to go to the authorities to handle the problem. The method that will be used for the development of this system is the Extreme Programming (XP) method.
Modifikasi Protokol Routing DSDV Menggunakan Algoritma Dynamic-power transmission untuk Mengurangi Interferensi Sinyal dalam Pengiriman Data Berdasarkan Tingkat Kepadatan Node di Jaringan MANET: Modification of DSDV Routing Protocol Using Dynamic-power transmission Algorithm to Reduce Signal Interference in Data Delivery Based on Node Density Level in MANET Desyra Ardiani; Hidayat Jatmika, Andy; Ariyan Zubaidi
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 7 No 2 (2023): Desember 2023
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v7i2.489

Abstract

Mobile Ad-Hoc Network (MANET) is a decentralized collection of nodes that exchange information temporarily via wireless transmission. When nodes communicate, all nodes in the communication range will be affected by signal interference from other nodes. The problem that arises due to this signal interference is that it will affect or interfere with the signal transmitted to the receiver, resulting in a decrease in network performance which will impact the quality of service (QoS). To overcome the problem of signal interference, use interference management. This study applies the Dynamic-Power Transmission (DPT) algorithm to the Destination Sequence Distance Vector (DSDV) routing protocol framework. DPT-DSDV will adjust the communication range automatically based on the node density level. When a node sends data packets to neighbouring nodes, the communication range will be adjusted automatically based on the selected level. The performance of DPT-DSDV will be compared with standard DSDV and standard AODV by looking at performance based on three parameters, namely throughput, packet delivery ratio (PDR), and end-to-end delay. Based on the results of research trials, applying the dynamic-power transmission algorithm can improve the performance of the standard DSDV routing protocol. Throughput results on DPT-DSDV increased by 0.90%. The packet delivery ratio (PDR) increased by 0.50%, and end-to-end delay decreased by 2.80%. Key words: MANET, Interference, Quality of Service, Routing, DSDV, Dynamic-Power Transmission.
Pengembangan Perintah Gestur Tangan Menggunakan Leap Motion untuk Aplikasi Floorplanner Marcellino, Hendy; Ario Yudo Husodo; Fitri Bimantoro
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 7 No 2 (2023): Desember 2023
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v7i2.516

Abstract

Architecture is part of the art of life and works best when it seems to give expression to the life that inhabits it. As technology has developed a lot, the field of architecture has also experienced many developments supported by technology such as making architectural designs. The development experienced in making architectural designs is that it is no longer required to draw design choices with side views on a lot of paper but instead use a simulation application for making architectural designs that are displayed through a monitor layer in 3D so that they can see more realistically. After many innovations emerged regarding simulation applications which generally still use hardware such as a mouse, then these innovations shifted to connecting the simulation application with the virtual world where hardware such as a mouse has been replaced by using gestures or limb movements such as parts of the hand or other parts of the body. While other fields like medic already use virtual tool interaction, architecture fields still just use mouse and keyboard. One of the virtual interaction devices used to be able to detect fingers and palms to interact with 3D simulation applications is Leap Motion. Leap Motion is starting to be widely used to carry out various ways of interacting with hands because it is more interactive and interesting to use even many people think that it can be used for hand rehabilitation or therapy too. However, even though many innovations have developed, there is still no innovation in the use of a hand gesture command system using Leap Motion for simulation applications to design architectural designs in 3D views. Based on these things, the authors designed and developed hand gesture commands using Leap Motion for Architectural Design App. The hand gesture command system used for the Floorplanner simulation application will be tested using a system usability scale by users with architectural, informatics, and unfamiliar backgrounds. Based on the tests carried out, it can be seen that the system is running properly even though it requires getting used to the device first and getting a score from the System Usability Scale of 59,167 out of scale from 0 to 100 which means it is still accepted by users or declared as "Marginally Acceptable" category.
Design And Development Of An Android-Based Nutrition Education And Stunting Prevention Information System For Pregnant Women (Case Study Sekotong Community Health Center) Rifqi, Muhammad Ari; Sri Endang Anjarwani; Ari Hernawan
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 7 No 2 (2023): Desember 2023
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v7i2.530

Abstract

Malnutrition and stunting are serious issues in Indonesia, particularly in Sekotong Subdistrict, West Lombok Regency, West Nusa Tenggara. The prevalence of stunting in this subdistrict reached 94 cases in 2020. This research aims to develop an Android application called Yess Nutrition as a medium for educating pregnant women about nutrition and stunting prevention in Sekotong Subdistrict. The Design Thinking and Personal Extreme Programming methods are employed in the development of this application. The test results show that the application received a mean opinion score of 4.173, indicating good quality and user interface. It is expected that the Yess Nutrition app will enhance the knowledge of pregnant women regarding nutrition and stunting prevention. By leveraging the vast potential of the Android platform, this application has the potential to become an effective educational tool for raising awareness about nutrition and preventing stunting.
Rancang Bangun Sistem Pemberian Nutrisi AB Mix Otomatis untuk Hidroponik Sistem Wick Berbasis IoT Muhammad Tryora Inzaghi; I Wayan Agus Arimbawa; Ari Hernawan
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 7 No 2 (2023): Desember 2023
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v7i2.537

Abstract

Hydroponics is agricultural cultivation using water as a medium to replace soil. One of the simplest hydroponic systems is the wick system. The wick system is a passive system, where water is only stored in a container and there are no moving parts. The hydroponic growth of the wick system is very influential on the nutrient solution that is commonly used in hydroponic wick systems, namely AB mix nutrition. Providing AB Mix nutrient concentration of 1000-1300 ppm is the best concentration. The provision of nutrition is currently carried out by monitoring water conditions manually in the hydroponic system. This can cause monitoring not to be carried out so that it can have an impact on plant growth that is less than optimal. Therefore, the authors conducted research to design an automatic AB mix nutrition system for IoT-based hydroponic wick systems. This research makes it possible to provide AB mix nutrition automatically by utilizing a water level sensor, TDS (Total Dissolve Solid) sensor, water pump and using the MQTT data communication protocol. This study uses hardware testing to test all sensors such as TDS sensors, water level sensors and relays in terms of functionality. The results show that everything is working properly reading the changes that have occurred. After that, testing the entire system was carried out by making several scenarios to see the system's reaction to the scenarios that were made. The system can control the nutrient content of plants with the amount of nutrient content according to the needs of the pakcoy plant, which is 1000-1300 ppm. When the plants lack nutrients, the system will pump the nutrients into the hydroponic container to meet the nutritional needs of the plants.
Rancang Bangun Sistem Informasi Pelaporan Penyelenggaraan Pemerintahan Daerah (SIPPDA) Provinsi Nusa Tenggara Barat Berbasis Website: Design and Development of a Website-Based Reporting Information System for the Implementation of Regional Government (SIPPDA) for West Nusa Tenggara Province Anisah Mutmainah; Nadiyasari Agitha; Royana Afwani
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 8 No 1 (2024): Juni 2024
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v8i1.544

Abstract

The Government Office and Regional Development Agency (OTDA) have the main task of implementing regional autonomy by preparing the Regional Government Administration Report (LPPD). The preparation of LPPD for the NTB Province is still done manually, including the collection of data for each government affair and the calculation of government performance achievements found in various indicators, resulting in a lengthy data collection process for reporting. With the advancement of information technology, a solution can be provided to address the aforementioned issues by developing a web-based Local Government Administration Reporting Information System (SIPPDA) using the extreme programming development method. The system development is carried out using the Laravel framework. During the testing phase, unit testing is performed to verify the functionality of the system, and the results indicate that it runs smoothly without errors. User Acceptance Testing (UAT) is then conducted in three iterations with different numbers of respondents. In the first iteration, with 5 respondents, the acceptance rate is 73.71%. In the second iteration, with 8 respondents, the rate is 89.86%, and in the third iteration, with 5 respondents, the rate is 79.5%.
Klasifikasi Citra Lubang pada Permukaan Jalan Beraspal dengan Metode Convolutional Neural Networks (CNN): Image Classification of Potholes on Paved Road Surfaces with the Convolutional Neural Networks (CNN) Method Ni Nyoman Citariani Sumartha; I Gede Pasek Suta Wijaya; Fitri Bimantoro; Gibran Satya Nugraha
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 8 No 1 (2024): Juni 2024
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v8i1.557

Abstract

A pothole is a bowl-shaped indentation in the road surface, less than 1 meter in diameter. The presence of potholes on the highway can endanger the safety of road users, so repairs need to be done as soon as possible. Images of potholed roads have high complexity, variations consisting of color contrast, hole size, presence of puddles or not, lighting when taking pictures, background and others. For this reason, an approach is needed that can classify images with a high degree of variation by extracting the important information contained in them. Judging from the potential success of using the Convolutional Neural Networks (CNN) approach in identifying images of potholes that will be reported for entry into the Public Works Service's road improvement record, the authors propose the idea of "Pothole Image Classification on Asphalt Road Surfaces with the Convolutional Neural Networks (CNN) Method”.

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