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Ucu Nugraha
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ucu.nugraha@widyatama.ac.id
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INDONESIA
Jurnal Sistem Informasi dan Teknologi Informasi
Published by Universitas Widyatama
ISSN : -     EISSN : 30313449     DOI : https://doi.org/10.33197/justinfo
Core Subject : Science,
Computer Science & IT
JUSTINFO (Jurnal Sistem Informasi dan Teknologi Informasi) aims to provide and accommodate research results, specialized scientific literature on applied studies, studies in information systems (IS)/information technology (IT) environments and public reviews of theoretical developments, methods and applied science related to subjects and industry. This journal is not only to facilitate local, national but also international researchers to publish their work exclusively in English.
Arjuna Subject : Ilmu Komputer (semua kategori) - Sistem Informasi
Articles 27 Documents
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Influence of Market Segmentation on Fashion Products on Profitability Levels with Marketing Strategies Through Social Media and E-Commerce Cika Alpi Nurpauji; Muhammad Raihan Alghazli; Saddina Yosi Khoirusifa; Ghamar Hafidz; Salsa Reviansyah
JUSTINFO | Jurnal Sistem Informasi dan Teknologi Informasi Vol. 1 No. 2 (2023): June 2024
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.vol1.iss2.2023.1746

Abstract

This research shows that market segmentation and marketing strategies through social media and e-commerce can increase the profitability of fashion products. According to BPS data for 2023, there is a significant increase in the purchase of fashion products in Indonesia. Based on the literature, this research discusses the concepts of market segmentation and marketing strategy. The approach through social media and e-commerce is one of the most effective ways to reach a wider target market and increase profitability. The results show a strong relationship between market segmentation, digital marketing strategy, and the profitability of fashion products. With fierce competition, changing trends, and expanding market reach, implementing these strategies is critical to the success of fashion companies in increasing sales and profitability. Players in the fashion industry anticipate this research to offer valuable insights for enhancing their marketing strategies.
identifikasi Identification of Skin Color Images in Humans Using Principal Component Analysis Method Aurelia Fermina Kambri; Mardiani Bana; Yampi R. Kaesmetan
JUSTINFO | Jurnal Sistem Informasi dan Teknologi Informasi Vol. 1 No. 2 (2023): June 2024
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.vol1.iss2.2023.1942

Abstract

Skin detection is an important process for classifying human skin color. Some phone cameras produce images in RGB (Red, Green, Blue) format. Various cases of skin detection often perform a transformation from the RGB color space to another color space, such as YCbCr or HSV, to improve detection accuracy. In this journal, we conduct research on skin detection using Teachable Machine, a platform that utilizes machine learning to teach computers to recognize visual patterns. The term "accuracy per epoch" refers to how well the model is at telling which pixels in an image are skin color during each training iteration (epoch) when skin color identification using the Principal Component Analysis (PCA) method on a teachable machine is being done. PCA helps reduce the dimensionality of data, enabling more efficient analysis and increased model accuracy. Teachable Machine makes this process simple by providing a user-friendly interface for training models without requiring in-depth knowledge of code or algorithms. Measuring accuracy per epoch is crucial in the training process because it shows the development of the model's ability to detect human skin over time. We expect the model to improve its accuracy in identifying skin-color pixels with each epoch, thereby enhancing the overall performance of the skin detection system. This research shows the great potential of the teachable machine in skin detection applications, providing a more efficient and accurate solution than traditional methods.  
Analysis and Design of a Web-Based Counseling Guidance Management Information System at ABC High School Diah Ayu; Yahfizham Yahfizham
JUSTINFO | Jurnal Sistem Informasi dan Teknologi Informasi Vol. 1 No. 2 (2023): June 2024
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.vol1.iss2.2023.1995

Abstract

Counseling is a professional support process aimed at helping individuals or groups overcome various personal, emotional, social, or psychological problems. This process involves trained counselors who utilize specialized techniques to provide guidance, support, and advice, facilitating better coping mechanisms and overall well-being. Given the critical role of counseling in fostering mental health and personal development, it is essential to continually improve and enhance counseling services for students. By doing so, counselors can ensure they are providing the most effective and comprehensive support possible. At present, SMA ABC relies on traditional methods such as Microsoft Word and Microsoft Excel to record and store data related to counseling and guidance. While functional, these tools are not optimized for the dynamic and multifaceted nature of counseling work. This traditional approach can be time-consuming and prone to errors, hindering the efficiency and effectiveness of the counseling services provided to students. To address these challenges, a web-based management information system is needed. Such a system would streamline the process of recording, storing, and retrieving information, enabling counselors to complete their tasks more quickly, accurately, and on time. A well-designed web-based system would also facilitate better data analysis and reporting. The development of this system will use the waterfall method, a systematic and sequential approach to software development. This method ensures that all data and information related to the counseling procedures and the system's technical implementation are thoroughly processed and accurately integrated, resulting in a reliable and efficient management tool.
Design of a Website-Based Project Management Information System at Warung Nasi Kak Jum Saridah Maulidya Putri Kinanti Ritonga; Yahfizham Yahfizham
JUSTINFO | Jurnal Sistem Informasi dan Teknologi Informasi Vol. 1 No. 2 (2023): June 2024
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.vol1.iss2.2023.2008

Abstract

Concept, testing, and service are the main priorities in the Warung Nasi Kak Jum Saridah business. Considering the use of paper media in order recording, table monitoring, and product data systems, problems often arise such as data duplication, misplaced documents, and errors in orders. Therefore, to overcome this problem, Warung Nasi Kak Jum Saridah needs a cashier management information system. This system will help business owners manage product data, monitor the dining table, and manage transactions more efficiently. Prototype analysis using the waterfall method in developing the cashier management information system at Warung Nasi Kak Jum Saridah. The hope is that this system will facilitate the overall cashier supervision and management process, increase efficiency in daily operations, and reduce errors that often occur in recording and monitoring data. Thus, the implementation of the cashier management information system will have a positive impact on the productivity and quality of Warung Nasi Kak Jum Saridah services to customers.
Designing of Project Management Information System for Web-Based OSIS Saturday Clean-Up Attendance Data Tasya Syalsabilla; Yahfizham Yahfizham
JUSTINFO | Jurnal Sistem Informasi dan Teknologi Informasi Vol. 1 No. 2 (2023): June 2024
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.vol1.iss2.2023.2009

Abstract

The rapid progression of technology in today's globalized era has created a heightened demand for efficiency and effectiveness in various aspects of life. This demand is particularly evident in the management of student activities, such as the OSIS clean-up events held on Saturdays. These events, while important for fostering a sense of community and responsibility among students, often face challenges due to manual and non-systematic data management processes. We developed a project management information system to manage attendance and data related to Clean Saturday activities, addressing these challenges. This system utilizes the waterfall method, a structured approach that allows for quickly identifying and resolving issues that may arise during the management process. By implementing this system, Clean Saturday activity management becomes more streamlined and efficient, resulting in improved overall effectiveness. The outcomes of this research are twofold. Firstly, it simplifies the data processing involved in managing attendance at Clean Saturday events, making it easier for OSIS personnel to track and analyze participation. Secondly, it enhances the overall efficiency of the OSIS clean-up program, allowing for better resource allocation and improved outcomes for both students and the community at large.
Strategy of Implementing Green Networking in Computer Networks at Bandung Technology University Muchamad Rusdan
JUSTINFO | Jurnal Sistem Informasi dan Teknologi Informasi Vol. 1 No. 2 (2023): June 2024
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.vol1.iss2.2023.2057

Abstract

This research aims to identify and analyze strategies for implementing green networking on BTU computer networks. The research methods used include literature studies, surveys, and interviews with various stakeholders at BTU, as well as analysis of energy usage data from existing computer network infrastructure. This study investigates various technical and operational aspects of implementing green networking, including appropriate technology, implementation strategies, and challenges faced. The research results show that implementing green networking at BTU can reduce energy consumption and operational costs, as well as support the global commitment to reduce greenhouse gas emissions. However, the main challenges faced include initial investment costs, the need for increased technical skills, and resistance to change. Based on the research findings, it provides practical recommendations for BTU to implement green networking effectively, including increasing awareness and education about green networking, investing in environmentally friendly technology, and developing policies and procedures that support sustainability. We anticipate that this research will significantly contribute to environmental preservation, enhance BTU operational efficiency, and serve as a model for other educational institutions to adopt sustainable technological practices.
Identification of Distorted Fingerprints Using Wavelet Method and Convolutional Neural Network (CNN) Marwondo; Sardjono; Ruslan Efendi
JUSTINFO | Jurnal Sistem Informasi dan Teknologi Informasi Vol. 1 No. 2 (2023): June 2024
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.vol1.iss2.2023.2074

Abstract

Biometrics offers a valuable tool for disaster victim identification, particularly through fingerprints. However, distorted or damaged fingerprints pose a significant challenge for recognition. This study explores the potential of Wavelet and Convolutional Neural Network (CNN) techniques to enhance the accuracy of distorted fingerprint recognition. Wavelet transform addresses the non-stationary nature of images and reduces detected noise. Convolutional Autoencoder, a CNN component, generates simplified feature representations from input images and attempts to reconstruct them. Utilizing 500 fingerprint samples, the testing results demonstrate accuracy variations ranging from 11% to 59.2%. Image reconstruction achieved 7.16% to 12.47% accuracy, while fingerprint matching attained accuracies between 92.71% and 93.96%. Averaging across all damage levels, the overall accuracy reached 37.65%, with average fingerprint reconstruction at 9.31% and average matching accuracy at 93.03%. The successful reconstruction and matching of distorted fingerprints within a certain range of damage using Wavelet and Convolutional Neural Network highlights the promising potential of these techniques for improved fingerprint identification in forensic and security contexts.
The Implementasi Manajemen Risiko Pada Warung Internet CYBERNETIC PC GAMING Dengan Menggunakan NIST 800-30: Manajemen resiko Rizky Alberto Evangelista Pardede; Ucu Nugraha
Jurnal Sistem Informasi dan Teknologi Informasi Vol. 3 No. 1 (2025): December 2025
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.v3i1.2544

Abstract

The operational dependency of internet cafes (gaming centers) on Information Technology (IT) infrastructure creates significant risk exposure to business continuity and data security. Cybernetic PC Gaming, a gaming service provider in Bandung, faces challenges in the form of cyber threats and physical disruptions that have the potential to damage its reputation and financial standing. This study aims to identify, analyze, and evaluate the level of information security risk by applying the National Institute of Standards and Technology (NIST) Special Publication 800-30 framework. The research method employed is descriptive qualitative, encompassing the nine stages of risk management, from system characterization to mitigation results documentation. The study successfully identified five primary risk profiles. Based on risk matrix calculations, two threats were classified at a "High" level: power outages lacking adequate backup power support and the risk of malware infection from customers downloading harmful files. Meanwhile, internet connection disruptions, natural disasters, and hardware dust accumulation were rated at a "Moderate" level. As a solution, this research formulates strategic control recommendations, including the procurement of a backup generator, internet service provider (ISP) redundancy, and the implementation of web filtering and enterprise-grade antivirus software. In conclusion, the systematic application of the NIST 800-30 standard can transform risk management at Cybernetic PC Gaming from a reactive to a proactive approach, thereby ensuring operational resilience and sustainable protection of digital assets.
UI/UX Optimization for OTP (One-Time Password) Verification in Digital Health Apps using Design Thinking Muhamad Raihan Alghazali; Ghamar Hafidz; Ucu Nugraha
Jurnal Sistem Informasi dan Teknologi Informasi Vol. 3 No. 1 (2025): December 2025
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.v3i1.2811

Abstract

The rapid advancement of digital technology in the healthcare sector has catalyzed the development of applications such as XYZ, which offer streamlined access to medical services. However, security remains a critical challenge, particularly regarding the One-Time Password (OTP) authentication process. Issues such as delayed code delivery, insufficient system feedback, and ambiguous user guidance frequently degrade the overall user experience. This study aims to enhance the usability and effectiveness of the OTP verification process within the XYZ application using the Design Thinking methodology. The methodology comprises five distinct phases: Empathize, Define, Ideate, Prototype, and Test. Findings from the Empathize and Define stages identified core pain points from the user’s perspective. The Ideate phase generated innovative solutions, including multi-channel OTP resend options, destination number validation, and informative system feedback with integrated help features. High-fidelity prototypes were developed using Figma and evaluated through internal usability testing to measure ease of use and operational effectiveness. The results demonstrate that the Design Thinking approach produces solutions more closely aligned with user needs, significantly improving the quality and reliability of the OTP verification process.
A Systematic Literature Review: Implementation of IT Risk Management Using the NIST Framework in Education Cika Alpi Nurpauji; Fahmi Idris Susanto; Muhammad Firas Hisyam; Muhamad Azmi; Ucu Nugraha
Jurnal Sistem Informasi dan Teknologi Informasi Vol. 3 No. 1 (2025): December 2025
Publisher : LP2M Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/justinfo.v3i1.3212

Abstract

The rapid advancement of information technology (IT) has significantly transformed various industries, including education, through the implementation of information systems that streamline student admissions, pedagogy, and institutional administration. However, this digital evolution introduces critical data security risks. Effective IT risk management is therefore essential to safeguard sensitive data and prevent operational disruptions within educational institutions. One of the most prominent frameworks for this purpose is NIST Special Publication 800-30, which provides systematic guidance for identifying and assessing IT-related risks. The NIST framework assists educational institutions in identifying potential threats and vulnerabilities while establishing robust mitigation strategies. While the framework possesses immense potential to elevate IT risk awareness, its implementation in the education sector remains hindered by resource constraints, varying levels of IT literacy, and regulatory complexities. This research employs the Systematic Literature Review (SLR) method to analyze the implementation of the NIST framework in managing IT risks within the education sector. This methodology enables the identification and evaluation of relevant research findings regarding both the successes and challenges associated with the framework's adoption. Through a comprehensive literature analysis, this study offers strategic insights and recommendations to enhance the effectiveness of the NIST framework within technology-driven educational environments.

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