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INDONESIA
Jurnal Nasional Teknologi Komputer
Published by CV. HAWARI
ISSN : 28087801     EISSN : 28084845     DOI : -
Core Subject : Science,
Computer Science & IT
Jurnal Nasional Teknologi Komputer di bidang ilmu komputer dan teknologi. Jurnal JNASTEK diterbitkan oleh CV. Hawari. Redaksi mengundang peneliti, praktisi, dan mahasiswa untuk menulis perkembangan ilmiah di bidang-bidang yang berkaitan dengan teknologi informasi, teknik informatika dan sistem komputer. Jurnal JNASTEK terbit 4 (Empat) kali dalam setahun pada bulan Januari, April, Juli dan Oktober. Jurnal ini berisi artikel penelitian dan kajian ilmiah.
Arjuna Subject : Ilmu Komputer (semua kategori) - Perangkat Lunak
Articles 83 Documents
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Search results for , issue "Vol 5 No 3 (2025): Juli 2025" : 83 Documents clear
ANALISIS MINOR INSPECTION PLTGU UNIT 1 PT. PLN NUSANTARA POWER UP BELAWAN TERHADAP PENINGKATAN NILAI EKONOMIS Yan Bastian Lumbantobing; Pristisal Wibowo; Zuraidah Tharo
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.206

Abstract

This study aims to analyze the impact of minor inspection implementation on increasing the economic value of PLTGU Unit 1 PT. PLN Nusantara Power UP Belawan, in this case PLTGU Unit 1 is the name of the GT 1.1 generator, the limitations of this study are directed at the performance parameters of the generator such as, specific gas consumption (SGC), heat rate, thermal efficiency, and net power output, to determine the impact of minor inspection implementation on increasing economic value. The results of the study showed that after minor inspection, there was a decrease in the specific gas consumption (SGC) value from 0.0120 mmBTU/kWh to 0.0119 mmBTU/kWh, a decrease in the heat rate value from 3,043.85 kCal/kWh to 3,027.76 kCal/kWh, an increase in thermal efficiency from 28.25% to 28.40%, in terms of electrical energy production, there was an increase in net power output from the previous 94,310 kWh to 94,390 kWh, this indicates an increase in net power output which contributes to increasing the availability of electricity supply to the system. Thus, minor inspection has been proven to provide a real contribution to increasing the economic value of the power plant, and is recommended to be carried out routinely according to the maintenance schedule.
Desain dan Pengembangan Aplikasi Penjualan Berbasis Website di Float Smoothies Shop Medan Dwi Citra Tarcilia Br Berutu; Abdul Khaliq; Supiyandi
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.207

Abstract

The development of information technology drives digitalization in various sectors, including the culinary business. Medan Float Smoothies Store still uses a conventional sales system, which causes various obstacles in order recording, stock management, and financial reporting. Therefore, this study aims to design and develop a website-based sales system to improve operational efficiency. The research method used is Research and Development (R&D) with the Software Development Life Cycle (SDLC) Waterfall model approach. The results of the study show that the implementation of a PHP and MySQL-based system has succeeded in replacing manual processes, increasing transaction accuracy, and expanding market reach through online ordering features. With this system, customers can easily view products, make transactions, and get stock information in real time. The benefits of this study are increasing business efficiency, reducing transaction errors, and providing a more practical shopping experience for customers.
Perancangan Sistem Informasi Serah Terima Barang Masuk dan Keluar di BPBD Kota Medan Berbasis Web Hermawan, Bagus; Siahaan, Andysah Putera Utama; Nasution, Darmeli
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.208

Abstract

Penelitian ini bertujuan untuk merancang dan membangun sistem informasi serah terima barang masuk dan keluar berbasis web pada Badan Penanggulangan Bencana Daerah (BPBD) Kota Medan. Sistem ini dikembangkan sebagai solusi terhadap proses manual yang selama ini digunakan, yang sering menimbulkan ketidakteraturan, keterlambatan, dan kesalahan dalam pencatatan. Metode pengumpulan data dilakukan melalui observasi, wawancara, dan studi pustaka. Hasil dari penelitian ini adalah sistem informasi yang dapat mencatat aktivitas serah terima barang secara digital, dengan fitur pengelolaan data barang, pencatatan transaksi masuk dan keluar, serta pelaporan. Implementasi sistem ini menunjukkan peningkatan efisiensi dan akurasi dalam pengelolaan barang, sekaligus mendukung transparansi dan akuntabilitas. Dengan demikian, sistem ini diharapkan dapat menunjang kinerja BPBD Kota Medan dalam penanganan logistik kebencanaan secara lebih efektif.
Perancangan UI/UX Aplikasi Mobile Penjualan Kue dan Roti Menggunakan Metode Design Thinking (Studi Kasus: UMKM Ghonim Kue) Nayaka Fajrina Soraya Rangkuti; Heni Wulandari; Randi Rian Putra
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.209

Abstract

MSMEs are the backbone of the national economy, but many have yet to adapt to digital technology. MSMEs “Ghonim Kue” face challenges in reaching a wide range of customers because they still rely on conventional sales systems. This research aims to design the user interface (UI) and user experience (UX) of Ghonim Kue mobile application using the Design Thinking method. With several processes in it, among others, empathize, define, ideate, prototype, and testing are processes in implementing the design thinking method. The creation of this application uses Figma software as a mobile display designer and is tested using the System Usability Scale (SUS). The test results of 26 users showed a SUS score of 66.15 which is included in the “Adjective scale Good and Accepbility Marginal High” category. This design is expected to be a digital solution that can increase the competitiveness of Ghonim Kue MSMEs in the era of digital transformation.
RANCANGAN BANGUN APLIKASI PEMBELAJARAN ONLINE (E-LEARNING) Di SMK TRITECH INFORMATIKA MEDAN BERBASIS WEB DENGAN METODE WATERFALL Hawari Siregar; Arpan
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.210

Abstract

The rapid development of information technology has encouraged educational institutions to adopt digital-based learning systems to enhance the effectiveness of the teaching and learning process. This study aims to design and develop a web-based online learning (e-learning) application at SMK Tritech Informatika Medan using the Waterfall software development method. The application is designed to facilitate teachers and students in conducting online learning activities, such as uploading materials, submitting assignments, participating in discussions, and evaluating learning outcomes. The Waterfall method was chosen because it provides a structured and systematic approach to system development, consisting of the following phases: requirements analysis, system design, implementation, testing, and maintenance. Each phase is carried out sequentially to ensure the system’s accuracy and stability. Testing was conducted to evaluate system functionality based on user needs, including login features, user data management, uploading materials and assignments, as well as interaction through comments. The result of this study is a web-based e-learning application that can be accessed via the internet by teachers, students, and administrators. The developed system was proven to function properly during testing, with all features working as intended. This application effectively and efficiently supports the learning process and is expected to serve as an alternative solution in supporting education digitalization at SMK Tritech Informatika Medan.
PERANCANGAN SISTEM E-LEARNING KURSUS ONLINE BERBASIS WEB MENGGUNAKAN LARAVEL Naufal Yudhi Handika; Wirda Fitriani; Suherman
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.212

Abstract

The advancement of information technology has significantly impacted the field of education, particularly in the implementation of online learning (e-learning). This study aims to design and develop a web-based e-learning system for online courses using the Laravel framework. The system is designed to facilitate interactive learning between instructors and course participants, featuring user management (admin, teacher, student), course management, learning materials, payment transactions, and student progress tracking. The system development methodology follows the SDLC (System Development Life Cycle) approach, which includes requirements analysis, system design, implementation, and testing stages. Laravel was chosen as the framework because it supports structured, secure, and efficient web application development. The result of this research is a responsive and user-friendly e-learning system that effectively supports distance learning. This system is expected to serve as an alternative solution for providing an online course learning platform that is flexible and accessible anytime and anywhere.
Desain UI/UX pada Website PT.Serasi Media Teknologi Menggunakan Metode Design Thinking Rianda Restu; Randi Rian Putra; Rully Dwi Arista
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.213

Abstract

The purpose of this study is to apply the Design Thinking methodology to evaluate the UI/UX design on the mobile website platform of PT Serasi Media Teknologi. Effective UI/UX design can improve user experience and maximize the use of online platforms. The Design Thinking method is used to understand user needs and develop innovative solutions. It is expected that the results of this study will contribute to the development of a more effective and user-friendly mobile-based website platform. This study uses a qualitative approach by conducting observations and interviews to understand user needs. The findings of the study indicate that effective UI/UX design can improve user satisfaction and maximize the use of online platforms. This study offers recommendations for improving the UI/UX design for the mobile-based website platform of PT Serasi Media Teknologi.
Implementasi Convolutional Neural Network (CNN) untuk Klasifikasi Jenis Jerawat Berbasis Web Menggunakan Streamlit Ayu Asyva Irfita; Muhammad Muttaqin; Hafni
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.214

Abstract

Acne vulgaris is one of the most common skin problems, particularly on the facial area, and it negatively affects the quality of life of sufferers both physically and mentally. The prevalence of acne continues to rise globally and nationally, especially among adolescents and young adults. This study aims to classify types of acne using the Convolutional Neural Network (CNN) method and to implement the results into an interactive web-based application using Streamlit, in order to facilitate users in independently detecting acne.The dataset used consists of 360 acne images collected from Google and Kaggle, which were categorized into four acne types: whiteheads, blackheads, pustules, and nodules before being split into training and testing datasets. This study employs three CNN architectures: InceptionV3, VGG16, and EfficientNetB0. Training was carried out in two stages with a learning rate of 0.0001 during the initial phase and 0.000005 during the fine-tuning phase, across a total of 50 epochs. The models were trained using the Adam optimizer, along with callbacks such as EarlyStopping, ModelCheckpoint, and ReduceLROnPlateau to prevent overfitting and enhance training efficiency.Model performance was evaluated using a confusion matrix. The evaluation results showed that the VGG16 architecture achieved the highest accuracy at 97%, followed by InceptionV3 with 96%, while EfficientNetB0 only reached 26% accuracy. The best-performing model was then integrated into a Streamlit-based application featuring a simple interface that allows users to upload facial images, detect acne types, and receive initial treatment recommendations.
Penerapan Secure Coding Sebagai Cyber Security Based Pada PT. Industri Karet Deli Denny Ramahdana; Zuhri Ramadhan
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.216

Abstract

Cyber security is a crucial aspect in maintaining the integrity, confidentiality, and availability of a company's information systems. PT. Industri Karet Deli, as one of the national manufacturing companies that has implemented digital systems in its operations, faces significant challenges in terms of potential cyber threats. This study aims to apply secure coding principles as the basis for strengthening cyber security systems. The methods used include identifying security vulnerabilities in the company's internal applications, evaluating the source code, and implementing secure coding practices in accordance with OWASP (Open Web Application Security Project) standards. The research results show that the systematic implementation of secure coding can reduce system vulnerabilities by up to 60% compared to before implementation. These findings emphasize the importance of integrating security from the early stages of software development to create systems that are resilient to cyber attacks. Recommendations from this study include regular training for development teams and the adoption of code review policies as part of the continuous system development process.
Perencanaan Penerangan Jalan Umum (PJU) Menggunakan Energi Baru dan Terbarukan di Desa Tanjung Gusta, Dusun III, Kecamatan Sunggal Ilyasa Ramadhan; Rahmaniar; Erpandi Dalimunthe
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.217

Abstract

Indonesia has great potential in renewable energy, especially solar energy, due to its geographical location in the tropics. This study aims to plan an efficient and sustainable Street Lighting (PJU) system in Tanjung Gusta Village, Sunggal District, by utilizing new and renewable energy (EBT). Tanjung Gusta Village has a need for adequate street lighting to improve safety, mobility, and quality of life for the community. The research method includes a field survey to analyze conditions, calculation of lighting needs based on applicable standards, and design of a PJU system using EBT. The results of the study indicate that a PJU system with solar power is the most suitable solution for Tanjung Gusta Village, considering the availability of resources. The planning of this solar PJU system includes selecting the type of lamp to be used, determining the capacity of solar panels and batteries, and calculating the optimal layout and height of lamp posts.

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