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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 MATRIK : Jurnal Manajemen, Teknik Informatika, dan Rekayasa Komputer 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) International Journal of Information Technology and Business Jurnal Pengabdian Kepada Masyarakat Indonesia Jurnal Informatika Dan Tekonologi Komputer Jurnal Manajemen, Bisnis dan Kewirausahaan Indonesian Journal of Infomatics Cyber Security and Network Management
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SITENAR CERYA as an Innovation in English Language Learning at SMP Stella Matutina Salatiga: Merging Technology and Folktales Englishtina, Inti; Putranti, Honorata Rarnawati Dwi; Danang, Danang; B Pujiati, Agnes Agnesita
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 5, No 3 (2024): REKA ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v5i3.241-250

Abstract

This study investigates the integration of SITENAR CERYA as an innovative approach to enhancing English language learning at SMP Stella Matutina Salatiga. SITENAR CERYA combines traditional folktales with modern technology to create an interactive learning experience. Employing qualitative implementation methods, including interviews, focus groups, and classroom observations, this activity examines participants' perceptions and experiences with SITENAR CERYA. The evaluation revealed that 85% of students reported increased engagement with English learning, and 90% of teachers noted a significant improvement in students' cultural appreciation and language acquisition. Furthermore, quizzes conducted during the activity showed an average 20% increase in students' language proficiency. These findings highlight the effectiveness of merging cultural heritage with technology in educational settings, offering valuable implications for future language teaching practices.
Integrating Hands-on and Virtual Learning for Environmental Sustainability: Eco Enzyme Soap Making at Stella Matutina Dwi Putranti, Honorata Ratnawati; Danang, Danang; Brito Da Silva, Teodora Maria Fernandes; B Pujiati, Agnes Agnesita
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 6, No 1 (2025): Reka Elkomika
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v6i1.88-97

Abstract

This Community Service Program aimed to implement and evaluate an Experimental Hybrid Learning Model at SMP Stela Martutina, Salatiga, Central Java. The program focused on enhancing students' conceptual understanding and practical skills by integrating concrete and virtual experiences in eco enzyme soap making. The program led to a significant increase in students' knowledge of environmental issues and their practical abilities in eco enzyme production. Moreover, students showed improved engagement in both physical and virtual learning environments. This hybrid learning approach proved effective in achieving educational goals and holds potential for broader implementation in other educational contexts.
E-Commerce and Digital Marketing Strategies: Their Impact on Startupreneur Performance Using PLS-SEM Sutisna, Felix; Lutfiani, Ninda; Anderson, Evelyn; Danang, Danang; Syaidina, Musidiansyah Otto
IAIC Transactions on Sustainable Digital Innovation (ITSDI) Vol 6 No 2 (2025): April
Publisher : Pandawan Sejahtera Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34306/itsdi.v6i2.695

Abstract

Startup entrepreneurs are increasingly relying on technology to manage their businesses, particularly through the use of E-Commerce platforms and digital marketing strategies. This study investigates the impact of these technologies on the performance of startup entrepreneurs. Conducted through an online survey of 150 Indonesian startup entrepreneurs from various industries, the research used a questionnaire to evaluate the extent of E-Commerce application usage, digital marketing efforts, and entrepreneurial performance, with a focus on revenue growth, customer satisfaction, and market visibility. The results indicate that the use of E-Commerce platforms has a significant and positive impact on startup performance. Entrepreneurs who actively use these platforms experience higher revenue growth and enhanced customer satisfaction. Furthermore, digital marketing strategies were found to positively influence business performance, particularly in terms of improving market visibility and expanding market reach. This research provides valuable insights into how technology and digital marketing can enhance startup performance. The key takeaway is that integrating E-Commerce platforms and digital marketing strategies into startup growth plans is essential. By investing in digital technologies and improving on- line marketing skills, startup entrepreneurs can achieve greater business success.
Transformation of Indonesian Language in Social Media Using AI Expert Systems and Machine Learning Santoso, Nuke Puji Lestari; Rawat, Bhupesh; Ratri, Sanda Ramadhan; Danang, Danang; Kumoro, Dwi Ferdiyatmoko Cahya; Supriati, Ruli; Natalia, Elisa Ananda
International Transactions on Artificial Intelligence Vol. 3 No. 2 (2025): May
Publisher : Pandawan Sejahtera Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33050/italic.v3i2.806

Abstract

This study explores the transformation of the Indonesian language on social media platforms by integrating advanced artificial intelligence techniques, including expert systems and machine learning algorithms. The rapid evolution of communication on platforms such as TikTok, Twitter, and Instagram has led to a dynamic shift in language use, characterized by increased creativity in slang, abbreviations, and code-mixing, alongside challenges in maintaining compliance with standard language norms. By applying intelligent systems capable of analyzing large volumes of social media data, this research aims to identify patterns of linguistic innovation and deviations from conventional language rules. The expert system framework supports automated detection and classification of language variations, while machine learning models enhance the accuracy and adaptability of language analysis over time. Findings indicate that AI-driven approaches can effectively balance the dual needs of fostering linguistic creativity and preserving language standards, providing valuable insights for language educators, policymakers, and digital content developers. The study underscores the potential of intelligent technologies to facilitate language monitoring and support efforts in maintaining the cultural identity of the Indonesian language amid the fast-paced digital communication landscape.
Design and Development of Tourism Geographical Information System of Semarang City Based On Android Mobile Shobirin, Achmad; Aryotejo, Guruh; Danang, Danang
Advance Sustainable Science, Engineering and Technology Vol 2, No 1 (2020): November-April
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v2i1.6018

Abstract

The development of information technology that exists today is very rapid, making us to keep abreast of the development of these technologies. Technology is able to present all information quickly and instantly, leaving old patterns such as gathering information manually which may require more time. Information technology today is very effective and efficient as indicated by the speed of processing time and the accuracy of the information needed. One of them is the information about tourist attractions, which is currently increasingly in demand by people who want to vacation with friends, relatives and family. However, the lack of information about the location of attractions that want to be visited, especially for potential tourists from outside the area of Semarang, make the author interested in design and creating the Semarang City Geographic Tourism Information System Based on Android Mobile to facilitate the search for the nearest route to the desired tourist attraction. The method used is using the Geographic Information System based on the data from the Semarang City Culture and Tourism Service. The Semarang City Tourism Geographic Information System Based on Android Mobile is a solution to problem solving as a medium to obtain information and tourism locations in the Semarang, which is applied in Android Smartphone devices, especially for the people from outside the city of Semarang. 
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 : Pusat Riset dan Inovasi Nasional

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.
Pembuatan Video Pembelajaran Daring Di SMK Swadaya Semarang Eka Satria Wibawa; Danang Danang
Jurnal Pengabdian kepada Masyarakat Indonesia (JPKMI) Vol. 1 No. 3 (2021): Desember: Jurnal Pengabdian Kepada Masyarakat Indonesia (JPKMI)
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jpkmi.v1i3.41

Abstract

Sebagai salah satu upaya kepedulian Lembaga Pengabdian Pada Masyarakat (LP2M), yaitu dengan diselenggarakannya pelatihan pe,mbuatan video di smk swadaya agar dapat meningkatan kinerja pembelajaran di lingkungan SMK SWADAYA SEMARANG Dengan adanya program pelatihan serta penyuluhan ini diharapkan para Pendidik dapat memahami dan mengimplementasikan ilmu dan informasi yang diperoleh untuk mendukung proses pengelolaan organisasi menjadi baik serta berkembang secara pesat. Pemilihan program penyuluhan dan pelatihan dalam pelatihan pembuatan video bagi pendidik guru didasarkan atas kebutuhan serta kerjasama pada kepala smk swadaya mengadakan kunjungan ke tempat usaha pemilik dalam tahapan pra survei. Tekait dengan hal tersebut, Tim PPM Lembaga Pengabdian Masyarakat Universitas STEKOM Semarang memandang perlu pelatihan dan penyuluhan Pendidikan pembuatan video, untuk diselenggarakan
RANCANG BANGUN SISTEM INFORMASI PELAYANAN ANGGOTA BERBASIS WEB MENGGUNAKAN METODE SDLC Danang Danang; Zaenal Mustofa
Jurnal Manajemen, Bisnis dan Kewirausahaan Vol. 1 No. 3 (2021): Desember: Jurnal Manajemen, Bisnis dan Kewirausahaan
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jumbiku.v1i3.4

Abstract

PT Amarta Karya Semarang, sebagai salah satu asosiasi yang bergerak di bidang jasa konstruksi ketenagalistrikan, dengan anggota yang tersebar di seluruh Jawa Tengah, dalam pengembangannya masih membutuhkan rencana strategis dan membawa kemajuan bagi asosiasi dan anggota. Oleh karena itu, dalam penulisan ini penulis akan membuat suatu model akta pendaftaran badan usaha berbasis web yang diharapkan dapat menjadi salah satu solusi pengembangan asosiasi itu sendiri. Sistem Informasi Layanan Anggota yang dikembangkan dengan metode pendekatan pengembangan sistem dengan SDLC (System Development Life Cycle) menghasilkan sebuah aplikasi yang akan menjawab kebutuhan PT Amarta Karya Semarang akan sebuah sistem layanan informasi guna meningkatkan pelayanan yang lebih baik. kepada anggota. Dalam pembuatan sistem ini, penulis menggunakan Macromedia Dreamweaver MX 2004 sebagai media perancangan dan PHP sebagai bahasa pemrograman yang digunakan, serta database MySQL sebagai media penyimpanan. Hasil perancangan Sistem Informasi Layanan Anggota dapat diakses oleh anggota, asesor, dan tanggung jawab, dimana anggota dapat mengajukan sertifikasi Badan Usaha secara online. Asesor dapat menilai lebih cepat dan persetujuan penanggung jawab dapat dilakukan lebih cepat, sehingga secara keseluruhan proses sertifikasi Badan Usaha dapat dilakukan dengan lebih cepat dan efektif. Kata kunci : Sistem, Informasi, layanan
Cosine Similarity as a Distance Metric for Javanese Script Image Recognition Classification Priyambodo, Aji Priyambodo; Prihati, Prihati; Danang, Danang; Farhan bin Mohamed
MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer Vol. 25 No. 2 (2026)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/matrik.v25i2.4123

Abstract

Javanese character (Hanacaraka) recognition presents significant challenges due to the intricate patterns and variations in character features. Addressing these issues is crucial for digitizing cultural heritage and supporting educational applications. This study aims to evaluate the effectiveness of cosine similarity as a distance metric for classifying Javanese characters, comparing its performance against traditional Euclidean and Manhattan distance metrics. The research used a feature-extraction technique based on the histogram of oriented gradients and evaluated cosine similarity across different classification models. Model performance was assessed using precision, recall, F1-score, and accuracy metrics. The results showed that cosine similarity, when combined with a support vector machine, achieved an accuracy of 99.84%, significantly outperforming other distance metrics. When applied to another classification model, cosine similarity improved accuracy to 90%, demonstrating its robustness in handling complex patterns. Parameter optimization was performed using a grid-based search, and model reliability was assessed through cross-validation. Compared with previous studies that primarily relied on deep learning, this research offers an alternative method that balances efficiency and accuracy while maintaining high interpretability. The findings establish a new benchmark for Javanese character recognition and highlight the potential of cosine similarity in broader applications. Future research can expand this study by incorporating more diverse feature extraction techniques, larger datasets, and hybrid approaches to further enhance recognition performance.
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. 
Co-Authors Ahmad Ashifuddin Aqham Aji Priyambodo Amad Maijun Amad Maijun Amalia Septi Reslili Anderson, Evelyn Andik Susdiyanto B Pujiati, Agnes Agnesita Basri Basri 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 Farhan Bin Mohamed Fatimah Indrawati 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 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 Nusril Nusril Padjar Setyo Budi Prihati Prihati Priyadi Priyadi Putranti, Honorata Rarnawati Dwi 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 Vivi Kumalasari, Vivi YAN ILMAS PUIMERA Zaenal Mustofa Zaenal Mustofa