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All Journal JURNAL SISTEM INFORMASI BISNIS Jurnal Simetris Kompak : Jurnal Ilmiah Komputerisasi Akuntansi E-Bisnis : Jurnal Ilmiah Ekonomi dan Bisnis Pixel : Jurnal Ilmiah Komputer Grafis Elkom: Jurnal Elektronika dan Komputer Bulletin of Electrical Engineering and Informatics Jurnal Teknologi Informasi dan Komunikasi REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat IAIC Transactions on Sustainable Digital Innovation (ITSDI) Walisongo Journal of Information Technology Advance Sustainable Science, Engineering and Technology (ASSET) Journal Peqguruang: Conference Series Jurnal Informatika Dan Tekonologi Komputer (JITEK) Jurnal Pengabdian Pada Masyarakat Indonesia (JPPMI) Jurnal Teknik Informatika dan Elektro (JURTIE) Journal of Management Nursing Jurnal Manajemen Informatika & Teknologi International Transactions on Artificial Intelligence (ITALIC) Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika International Journal of Information Technology and Business Jurnal Pengabdian Kepada Masyarakat Indonesia Jurnal Informatika Dan Tekonologi Komputer Global Science: Journal of Information Technology and Computer Science Jurnal Manajemen, Bisnis dan Kewirausahaan Indonesian Journal of Infomatics Cyber Security and Network Management
Danang, Danang
Universitas Sains Dan Teknologi Komputer
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Cost-Sensitive Fraud Detection with Reliability Calibration: A Practical Pipeline with XGBoost and Focal-Proxy Reweighting Danang Danang; Toni Wijanarko Adi Putra
International Journal of Information Technology and Business Vol. 8 No. 1 (2025): November : International Journal of Information Techonology and Business
Publisher : Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/ijiteb.812025.13-24

Abstract

Fraud detection on payment transactions is an extremely imbalanced, high-stakes classification task in which deployment decisions depend not only on ranking quality but also on reliable probability estimates. We study credit card fraud detection on a standard real-transaction benchmark (284,807 transactions; 492 frauds) and target two deployment requirements: cost-sensitive thresholding under asymmetric error costs and reliability calibration so model outputs can be interpreted as stable risk scores. We benchmark logistic regression and XGBoost and propose a focal-proxy reweighting scheme for boosted trees via iterative weight updates inspired by focal loss. Probabilities are calibrated on validation using Platt scaling, temperature scaling, and isotonic-style monotone calibration; the best calibrator is selected by minimum validation Brier score. For decision-making, we choose the operating threshold that minimizes expected cost, Cost(t) = 10 · FN(t) + 1 · FP(t), on validation, then evaluate on a held-out test set. On the benchmark split (train 199,364; validation 42,721; test 42,722), the calibrated XGBoost baseline achieves AUROC 0.973, AUPRC 0.812, fraud-class F1 0.767, and expected cost 154 with very low calibration error (ECE = 1.1 × 10⁻⁴). Overall, calibration reduces ECE and improves or maintains the Brier score, while cost-aware thresholding makes the FN/FP trade-off explicit via decision curves. 
Privacy Protection and Trust in the Digital Era: A Systematic Review of Data Breach Impacts on SDG Progress Toni Wijanarko Adi Putra; Danang Danang
International Journal of Information Technology and Business Vol. 8 No. 1 (2025): November : International Journal of Information Techonology and Business
Publisher : Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/ijiteb.812025.24-34

Abstract

Objective – In the digital transformation era, the integrity of personal data has become essential for maintaining trust and ensuring the sustainability of digital services. This paper aims to systematically review how data privacy violations affect public trust and progress toward Sustainable Development Goals (SDGs), especially SDG 9 (infrastructure and innovation) and SDG 16 (strong institutions and justice). Methodology—This study adopts the Systematic Literature Review (SLR) approach based on Kitchenham’s framework. Relevant articles from 2021–2025 were retrieved from Scopus, IEEE, Springer, and ScienceDirect using a predefined search string aligned with PICOC. A total of 19,504 records were screened, and 36 high-quality studies were selected after applying inclusion/exclusion criteria and quality assessment tools (e.g., CASP, AMSTAR). Findings—The review reveals that sectors such as education, healthcare, and smart cities are increasingly adopting data protection technologies, including encryption, federated learning, differential privacy, and blockchain. However, many still face regulatory, infrastructural, and human literacy gaps. Breaches in personal data significantly reduce public trust, impair the exercise of digital rights, and pose ethical and operational risks for achieving SDGs. Limitations – The study is limited by the timeframe (2021–2025) and focuses primarily on peer-reviewed literature. Practical insights from developing countries may be underrepresented due to database indexing limitations. Contribution – This review contributes a cross-sectoral synthesis of technological and regulatory practices for data protection, identifies key challenges, and outlines a strategic roadmap for policymakers and technologists to integrate ethical data governance for sustainable digital futures.
RANCANG BANGUN APLIKASI PENJUALAN OXYGEN PADA PT. SINAR PURNAMA SAKTI SEMARANG Amalia Septi Reslili; Danang Danang
Jurnal Informatika Dan Tekonologi Komputer (JITEK) Vol. 4 No. 1 (2024): Maret : Jurnal Informatika dan Tekonologi Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jitek.v4i1.2953

Abstract

Sinar Purnama Sakti Semarang is an agent with a trading business that is engaged in the sale of Gas Oxygen (O2), Acyteline (C2H2), Carbondioxide (CO2) and Argon (Ar) experiencing problems, namely in the process of data processing sales of goods are still completely manual. This results in a good accumulation of transaction data, so that the efficiency and completeness of the data is not guaranteed. The purpose of this paper is to create an application that can help process data quickly and efficiently at PT. Sinar Purnama Sakti Semarang. This sales application is very helpful for users. With the new system in the sales application, it will make it easier to process data and make sales reports. In addition, PT. Sinar Purnama Sakti Semarang can also provide proof of payment in the form of a note. Performance of PT. Sinar Purnama Sakti Semarang becomes faster and more efficient after the sales application. So to simplify the sales information system is done with a computerized system. There are several programs that can be used in processing sales applications, one of which is the Visual Basic 6.0 program. Microsoft Visual Basic 6.0 is one of the most popular programs used in programming. Many people have used it and many people already know it. As for storage, the author uses Microsoft Office Access. Based on the description above, the authors take the title in accordance with the need for data processing information in PT. Sinar Purnama Sakti Semarang.
SISTEM INFORMASI PENJUALAN SPECIALIZED IN PLASTIC CONTAINERS AND PACKAGINGS BERBASIS WEB : (Studi Kasus PT. ILUFAK PLASKAGING Semarang) Minarida Nova Yuspita; Danang Danang
Jurnal Informatika Dan Tekonologi Komputer (JITEK) Vol. 4 No. 2 (2024): Juli : Jurnal Informatika dan Tekonologi Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jitek.v4i1.2962

Abstract

Recent developments in all fields have provided many advantages in various aspects of human life. These developments have brought people to always move dynamically because they are required to always follow it. The ability to access information will be very helpful in the development process of human life itself. In line with the advancement of information technology today, all business fields are required to be able to keep up with very rapid and fast developments. In the preparation of the thesis carried out at PT. ILUFAK Plaskaging Semarang authors can conclude that there are many benefits of making a web-based Sales information system. The benefit is that it can help smooth, precise and work efficiency in the system of selling goods. In making this Web-based sales information system, the author uses the application program Macromedia Dreamwever MX 2004, Adobe Photoshop CS2, to support the creation of online sales programs.
Prototipe Sensor Pendeteksi Kebakaran Hutan Berbasis Transmisi LoRa dan Solar Panel Beltsazaran Beltsazaran; Danang Danang; Iman Saufik Suasana; Dani Sasmoko; Tony Winjanarko Adi Putra
Jurnal Informatika Dan Tekonologi Komputer (JITEK) Vol. 5 No. 2 (2025): Juli : Jurnal Informatika dan Tekonologi Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jitek.v5i2.6745

Abstract

Forest fires are a frequent disaster in Indonesia, especially during the dry season, which has serious impacts on ecosystems, public health, and economic conditions. This research aims to design a prototype Internet of Things (IoT)-based forest fire early detection system supported by LoRa transmission technology and Thingspeak cloud storage platform. The system uses DHT22 sensors to measure temperature and humidity, MQ-2 sensors to detect the presence of gas and smoke, and solar panels as the main power source to support energy efficiency in the field. LoRa was chosen as the communication medium due to its ability to transmit data over long distances with low power consumption. Data read by the sensors is regularly sent to ThingSpeak and displayed graphically with an average transmission delay of 15 seconds. Tests have shown that the system is able to accurately recognize potential fires and send out early warnings quickly. In this way, the system can be an efficient and energy-saving solution for remote forest areas. Overall, this prototype has successfully demonstrated its potential as a reliable and innovative forest fire mitigation tool.
Perancangan Alat Pengendali Pompa Air Berbasis IOT Nur Fauziah; Nuris Dwi Setiawan; Danang Danang; Eko Siswanto 
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 1 No. 6 (2023): November : Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v1i6.171

Abstract

Of course, a soccer field needs water and the fertility of the field soil so that the grass can grow. The development of science and technology currently has a big influence on getting work done. A pump is a tool used to move liquids (fluids) from one place to another through pipes (channels) by adding energy to the fluid being moved and continuing continuously. Currently, many water pumps still use the manual method, namely using a switch or even just using a plug. Grass will also live if the soil has appropriate humidity, if the soil moisture level is low, the grass will die if there is excess moisture and it will not be able to grow. This problem certainly requires a solution that can help monitor soil moisture as well as control water pumps. By utilizing NodeMCU ESP8266 microcontroller technology as the control center, the YL-69 sensor measures soil moisture values ​​and also relays as a replacement for manual switches. To control pump conditions via Blynk.
Implementasi Sistem Temu Kembali Arsip SPJ Desa Berbasis RFID dan QR-Code Moh Muthohir; Danang Danang; Eko Siswanto
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 4 No. 3 (2026): Mei: Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v4i3.1516

Abstract

Village accountability documents or Surat Pertanggungjawaban (SPJ) require an archival system that is accurate, traceable, and efficient to support financial administration and audit readiness. In many village offices, SPJ archives are still managed manually, causing delays in retrieval, risks of physical loss, and weak monitoring of document status. This study aims to implement a village SPJ archive retrieval system based on RFID and QR-Code to improve retrieval speed and administrative accountability. The research uses a system development approach through needs analysis, database design, implementation of QR-Code identification for digital access, and RFID tagging for physical storage tracking. The proposed system integrates document metadata, storage location, lending records, and activity logs to support end-to-end traceability. The results indicate that QR-Code enables quick access to archive information, while RFID strengthens physical tracking of archive containers and locations. The integration of both technologies provides a practical solution for improving archival efficiency and accountability in village financial administration. This study contributes a contextual model for digital archiving that can be adapted to local government document management.
Co-Authors Ahmad Ashifuddin Aqham Amad Maijun Amad Maijun Amalia Septi Reslili Anderson, Evelyn Andik Susdiyanto B Pujiati, Agnes Agnesita Basri Basri Beltsazaran Beltsazaran Brito Da Silva, Teodora Maria Fernandes Budi Hartono Budi Hartono budi hartono Budi Raharjo Dani Sasmoko Dani Sasmoko Duryono Duryono Eka Satria Wibawa Eko Siswanto Endang Swastuti Eni Dwifitri Astutiningtias Fatimah Indrawati Febri Adi Prasetya Febryantahanuji Febryantahanuji Fujiama Diapoldo Silalahi Gufron Gufron Gunawan Wibisono Guruh Aryotejo Guruh Aryotejo, Guruh Hendri Rasminto Hudha Pratna Safiyan Ilham Akhsani Iman Saufik Suasana Indra Ava Dianta Inti Englishtina Irlon Irlon Ismi Kusumaningroem, Ismi Kasih Purwantini Katon Abdul Fatah Kumoro, Dwi Ferdiyatmoko Cahya Maya Utami Dewi Minarida Nova Yuspita Moh Muthohir Mufadhol Mufadhol Muh Tofik Muhammad Agus Kurniawan Muhammad Ryza Awwali , Sulartopo, Muhammad Ryza Awwali , Muhammad Sarjan Nandito Putra Prabawa Natalia, Elisa Ananda Ninda Lutfiani Nizar, Mochamad Fahrul Nur Cahyo Hendro Wibowo Nur Fauziah Nuris Dwi Setiawan Nusril Nusril Padjar Setyo Budi Priyadi Priyadi Putranti, Honorata Rarnawati Dwi Rashad Huseynaga Asgarov Ratnawati Dwi Putranti Honorata Ratri, Sanda Ramadhan Rawat, Bhupesh Rima Febriana Maryati Rizki, Soulenia Rahayu Ruli Supriati, Ruli S Siswanto Santoso, Nuke Puji Lestari Shobirin, Achmad Siti Nasekah Suprapti Suprapti Sutisna, Felix Suwardi Suwardi Syaidina, Musidiansyah Otto Tin Utami Toni Wijanarko Adi Putra Tony Winjanarko Adi Putra Vivi Kumalasari, Vivi YAN ILMAS PUIMERA Zaenal Mustofa Zaenal Mustofa