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All Journal IJCCS (Indonesian Journal of Computing and Cybernetics Systems) Prosiding KOMMIT Gaung Informatika Jurnal technoscientia Jurnal Teknologi Jurnal Script Jurnal Jarkom Telematika Jurnal Edukasi dan Penelitian Informatika (JEPIN) JUITA : Jurnal Informatika Jurnal Inspiration Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Creative Information Technology Journal Paradigma INTENSIF: Jurnal Ilmiah Penelitian dan Penerapan Teknologi Sistem Informasi Jurnal Eksplora Informatika JurTI (JURNAL TEKNOLOGI INFORMASI) Journal of Dedicators Community CARADDE: Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN TAMBUSAI Jurnal FATEKSA : Jurnal Teknologi dan Rekayasa Informasi Interaktif CCIT (Creative Communication and Innovative Technology) Journal Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Respati Jurnal Sistem Komputer & Kecerdasan Buatan Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Informa: Jurnal Penelitian dan Pengabdian Masyarakat JURNAL TEKNOLOGI TECHNOSCIENTIA Jurnal Teknik Informatika (JUTIF) Community Empowerment JNANALOKA Jurnal Sains Teknologi dalam Pemberdayaan Masyarakat Rambideun : Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmiah IT CIDA : Diseminasi Teknologi Informasi Indonesian Journal of Community Empowerment and Service Jurnal Informatika: Jurnal Pengembangan IT Jurnal Teknologi KOPEMAS Socratika
Suwanto Raharjo
Universitas Akprind Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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SISTEM PENGENDALI HAMA PADA TANAMAN PADI BERBASIS IoT MENGGUNAKAN TENAGA SURYA PADA MASYARAKAT DESA WUKIRSARI Maulana Wahid, Rindo; Santoso, Gatot; Hani, Slamet; Hamzah, Amir; Raharjo, Suwanto; Setyaningsih, Emy
JURNAL GAUNG INFORMATIKA Vol 16 No 2 (2023): JURNAL GAUNG INFORMATIKA
Publisher : Universitas Sahid Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The rice pest control system based on the Internet of Things (IoT) and powered by Solar Power Plants (PLTS) is an innovative solution aimed at enhancing productivity and sustainability in Indonesia's agricultural sector. This community service project, conducted in Wukirsari Village, Kapanewon Cangkringan, Sleman Regency, primarily focuses on addressing pest issues and technological limitations. The designed device integrates ultrasonic sensors and UV light controlled by the ESP32 microcontroller, utilizing PLTS as the energy source. The system can be accessed and controlled remotely via the Blynk server, making monitoring and control more efficient and sustainable. The research methodology includes information gathering, device design, testing, and comprehensive evaluation. Integration with PLTS ensures the system uses environmentally friendly energy. The test results indicate that the device effectively monitors and controls pests while providing ease of management with a responsive modern tool. The device operates in real-time and is highly responsive, supported by solar panels with a capacity of 920W, capable of fully charging the battery in approximately 2.6 hours. This allows the device to operate continuously for 24 hours. The implementation of this technology not only demonstrates reliability in addressing pest issues but also proves that the system can function sustainably, supporting agricultural productivity, and providing significant benefits to farmers in Wukirsari Village.
PENINGKATAN EKONOMI MASYARAKAT DESA WUKIRSARI MELALUI PROGRAM SMART FARMING PENGOLAHAN LAHAN DAN HASIL PADI BERBASIS IOT Khalil sidik; Santoso, Gatot; Hamzah, Amir; Raharjo, Suwanto; Setyaningsih, Emy
RAMBIDEUN : Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 2 (2024): Rambideun: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Al Muslim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51179/pkm.v7i2.2397

Abstract

Tri Sedyo Manunggal Farmers Group, Pandan Hamlet, Wukirsari Village, Cangkringan Sleman District, Yogyakarta faces challenges in monitoring the quality of rice crops, using pesticides to eradicate pests, and depending on electricity from PLN and fuel to operate UV lamps. Therefore, to overcome this problem, the activity implementation team developed a smart farming tool that can monitor pH, leaf color and pest volume. Pest traps use ultraviolet (UV) lights with relays as automatic switches. The entire system is powered by solar energy, creating an environmentally friendly solution with no electricity costs from PLN. Integration with IoT enables remote control and monitoring. Implementation of activities was carried out through socialization of smart farming tools, as well as training in use, installation and maintenance of the tools. From the results of the implementation of activities, it can be seen that this tool operates effectively with a high level of accuracy, and provides important information, such as the need for urea fertilizer, the amount of lime for acidic soil, and sulfur to treat alkaline soil, in order to achieve the ideal pH. In addition, this tool is effective in catching pests without pesticides, including planthoppers, grasshoppers and grasshoppers. So, farmers make the right and efficient decisions, increase crop yields and manage time. This initiative is an important step towards sustainable and technology-based agriculture.
Optimalisasi Stemming Kata Berimbuhan Tidak Baku Pada Bahasa Indonesia Dengan Levenshtein Distance Setya Putra, Rahardyan Bisma; Utami, Ema; Raharjo, Suwanto
Jurnal Informatika: Jurnal Pengembangan IT Vol 3, No 2 (2018): JPIT, Mei 2018
Publisher : Politeknik Harapan Bersama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/jpit.v3i2.877

Abstract

Stemming algorithm Nazief and Andriani has been development in terms of the speed and the accuracy. One of its development is Non-formal Affix Algorithm. Non-formal Affix Algorithm improves the accuracy for non-formal affixed word. In its growth, Indonesian language is used in two ways: formal and non-formal. Non-formal language is commonly used in casual situations such as conversations and social media post (Facebook, Twitter, Instagram, etc.). To get the root of the word of a casual conversation or a social media post, stemming algorithm which can process the non-formal words with affixes already proposed. But, the previous algorithm unable to stem a non-formal word that slightly change the root word. Therefore, this study modifies Non-formal Affix Algorithm to increase stemming accuracy on non-formal word. Modifications are made by adding Levenshtein Distance. The result of the research shows that the algorithm made in this research has 96.6% accuracy while the Non-formal Affix algorithm has 73.3% accuracy in processing 60 non-formal affixed words. Based on the result, Levenshtein Distance approach can increase the accuracy on stemming non-formal affixed word.
PENGEMBANGAN WISATA GASTRONOMI MELALUI PELATIHAN KULINER BERBASIS TEKNOLOGI TEPAT GUNA DI KELURAHAN KRAMBILSAWIT, SAPTOSARI, GUNUNG KIDUL Suwandojo, Dodik Prakoso Eko Hery; Haryanto, Eko; Mazaya, Amalia Febryane Adhani; Raharjo, Suwanto; Waluyo, Joko
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 4 No. 6 (2023): Volume 4 Nomor 6 Tahun 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v4i6.21039

Abstract

Gastronomy tourism merupakan salah satu contoh dari produk pariwisata baru dan berkelanjutan karena memberikan inovasi yang menjawab kebutuhan wisatawan. Gastronomi tourism selain berkaitan dengan makanan juga merupakan refleksi dari sebuah sejarah, tradisi, budaya, serta faktor lingkungan lokasi wisata. Kelurahan Krambilsawit merupakan desa dengan kategori miskin ekstrim dimana memerlukan pengelolaan yang tepat untuk meningkatkan kapasitas sumberdaya manusianya sekaligus memanfaatkan potensi sumberdaya alamnya yang melimpah agar bernilai jual lebih. Pengabdian ini dilakukan dengan tujuan untuk meningkatkan softskill dan hardskill masyarakat Krambilsawit dan penerapan teknologi tepat guna (TTG) untuk mendukung pengembangan gastronomy tourism. Pelatihan dilaksanakan di Pantai Ngedan, Kelurahan Krambilsawit, Saptosari, Gunung Kidul pada hari Minggu, 5 November 2023. Peserta pelatihan kuliner sebanyak 15 orang dari rukun tani dan nelayan Mina Bahari Manunggal Kelurahan Krambilsawit. Hasil pengabdian masyarakat adalah olahan kuliner lokal berupa bakso ikan baby tuna dan nori rumput laut panggang yang diolah langsung oleh peserta pelatihan. Peserta antusias sampai kegiatan berakhir hingga pada saat penerapan TTG yang diberikan yaitu alat penggiling bakso dan alat pembuat briket arang. Serangkaian kegiatan ini kemudian agar dapat menjadi langkah awal masyarakat Krambilsawit dalam mengembangkan potensi gastronomy tourism berbasis teknologi tepat guna sehingga menghasilkan manfaat ekonomi untuk kesejahteraan masyarakat setempat secara berkelanjutan.
A Multispectral YOLOv8-Based System for Real-Time Object Detection and Distance Estimation in Blind Navigation Ema Utami; Erwin Syahrudin; Anggit Dwi Hartanto; Suwanto Raharjo
JUITA: Jurnal Informatika JUITA Vol. 14 Issue 1, March 2026
Publisher : Department of Informatics Engineering, Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/juita.v14i1.28373

Abstract

Developing reliable real-time navigation systems for visually impaired individuals remains challenging, particularly in dynamic and low-light environments. This study proposes an integrated framework combining YOLOv8, OpenCV-based monocular distance estimation, and RGB–NIR multispectral imaging to enhance detection robustness and distance awareness. A dataset of 1,700 annotated images collected from diverse indoor and outdoor environments was used for training and evaluation using preprocessing techniques such as resizing, normalization, and data augmentation. System performance was evaluated using Precision, Recall, F1-Score, mean Average Precision (mAP), Mean Absolute Error (MAE), Root Mean Squared Error (RMSE), and Frames Per Second (FPS). Experimental results show that YOLOv8x achieved the best performance with an F1-Score of 0.91, mAP@50 of 0.74, MAE of 0.15 m, RMSE of 0.20 m, and a processing speed of 22 FPS. Multispectral RGB–NIR integration further improved low-light performance, increasing the F1-Score from 0.83 to 0.89 and reducing MAE from 0.28 m to 0.19 m with only a minor reduction in speed. These findings demonstrate that the proposed system provides an effective balance between accuracy and real-time performance for assistive navigation applications.
Benchmarking Relational and Array-Based Models for Genealogical Data Storage in PostgreSQL Raharjo, Suwanto; Utami, Ema
Jurnal Teknik Informatika (Jutif) Vol. 7 No. 1 (2026): JUTIF Volume 7, Number 1, February 2026
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2026.7.1.5629

Abstract

Genealogical information systems manage inherently hierarchical data structures that represent family relationships across multiple generations. Traditional implementations predominantly rely on normalized relational database designs using junction tables to model parent–child relationships. While this approach ensures strong referential integrity, it often incurs substantial performance overhead due to complex join operations during deep hierarchical traversal. Recent versions of PostgreSQL provide native support for array data types This study compares two genealogical database models implemented in PostgreSQL: a normalized relational model using a junction table and a denormalized model that stores child identifiers directly as UUID arrays. To evaluate their performance, we conducted controlled benchmarking experiments using synthetically generated genealogical datasets with varying generational depth and branching patterns. The comparison focuses on storage efficiency, recursive traversal performance, and write operation costs under realistic hierarchical workloads. Results obtained from a large-scale dataset containing more than 7 million individual records show that the UUID array–based model reduces disk space usage by 31%. During deep recursive traversal involving over 12 million nodes at the tenth generation, the array-based model demonstrates improved data locality, leading to a 5.2% reduction in execution latency and 7% fewer shared buffer accesses compared to the relational model. Interestingly, contrary to common expectations in normalized database design, the array-based model achieves 22% faster single-insert performance because it avoids foreign key validation and multiple index updates. This improvement comes with slightly higher write amplification, reflected in a 6.6% increase in buffer usage due to PostgreSQL’s multi-version concurrency control mechanism. These findings contribute to the field of Informatics by providing empirical evidence on how database internal mechanisms influence performance trade-offs in hierarchical data management, offering guidance for designing scalable and read-efficient information systems beyond genealogical applications.
Evaluating YOLOv8-Based Distance Estimation: A Comparison of OpenCV and Coordinate Attention Weighting in Blind Navigation Systems Erwin Syahrudin; Ema Utami; Anggit Dwi Hartanto; Suwanto Raharjo
INTENSIF: Jurnal Ilmiah Penelitian dan Penerapan Teknologi Sistem Informasi Vol 9 No 2 (2025): August 2025
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/intensif.v9i2.24395

Abstract

Background: Recent developments in assistive technologies for the visually impaired have increasingly utilized computer vision techniques for real-time distance estimation. However, challenges remain in balancing accuracy, latency, and robustness under dynamic environmental conditions. Objective: This study aimed to evaluate and compare the performance of OpenCV and Coordinate Attention Weighting (CAW) models for distance estimation in blind navigation systems, particularly focusing on their effectiveness in real-time scenarios. Methods: A quantitative experimental study was conducted using an image dataset labeled with actual distances. The baseline performances of OpenCV and CAW were measured and compared. Subsequently, targeted optimizations were applied to the OpenCV model, including adaptive image filtering, hyperparameter tuning, and integration of a Kalman filter. Results: Initial evaluation showed that CAW achieved a higher baseline accuracy of 88% compared to OpenCV. However, after optimizations, OpenCV’s accuracy improved by 15%, reaching approximately 85%. Additionally, the optimized OpenCV model demonstrated reduced latency, outperforming CAW in real-time detection speed. Under varying lighting and motion conditions, OpenCV also exhibited superior robustness compared to CAW. Conclusion: The findings suggest that with proper optimization, OpenCV can match or exceed CAW in key performance aspects, making it a viable and efficient alternative for real-time distance estimation in blind navigation systems. Future research should explore further model integration and hardware acceleration for deployment in wearable devices.
The Effect of TAM Cognitive Factors on Usage Intention, Moderated by Organizational Support Bikorin Bikorin; Muhammad Sholeh; Suwanto Raharjo; Anggun Sulistyowati Sulistyowati
Socratika: Journal of Progressive Education and Social Inquiry Vol. 3 No. 2 (2026)
Publisher : South Sulawesi Education Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58230/socratika.v3i2.688

Abstract

Digital transformation has become the approach adopted to improve performance. Learning Management Systems (LMS) bridge the learning gap between educators and learners. The Technology Acceptance Model (TAM) is insufficient for analysis; the Object-Oriented Systems (OST) approach complements the mechanisms of technological intervention. This study aims to analyze the moderating effect of organizational support, mediated by TAM, on the intention to adopt technology. This study employed a quantitative approach using an explanatory case study method. The study sample consisted of students at private universities in Yogyakarta who use an LMS. The sample size was 80 respondents, and data were collected via an online survey. SEM-PLS was selected as the analytical method. Data analysis shows that one hypothesis was accepted and two hypotheses were rejected. Perceived ease of use has a positive effect on perceived usefulness in using an LMS. Neither the effect of perceived ease of use nor that of perceived usefulness on behavioral intention via organizational support is statistically significant Theoretically, TAM suggests that ease of use functions both as a cognitive factor and as a direct prerequisite. Ease of use increases the intention to use the system, but institutional support does not always strengthen or weaken this relationship. Institutional support is unable to alter the beliefs regarding benefits that drive behavioral intentions. Its theoretical contribution lies in the integration of technology acceptance and organizational institutional support. In practice, universities and system developers collaborate to produce advanced technologies that accommodate needs resources.
Co-Authors -, Komarudin Abdul Malik Zuhdi Achmad Yusron Arif Ade Rizki Saputra Afifah Nur Aini Aflahah Apriliyani Ahmad irfa’i Alsyaibani, Omar Muhammad Altoumi Amalia Febryane Adhani Mazaya Amir Hamzah Amir Hamzah Amir Hamzah Amrullah, Yusuf Amri Andi Kriswantono Anggit Dwi Hartanto Anggun Sulistyowati Sulistyowati Apolinarius Gusala Argaditia Mawadati Ari Sabela Anggraini Arief Setyanto Arief, Achmad Yusron Arif Nur Rohman Arif setiadi Arif, Achmad Yusron Aziz Nurwahidin Bikorin Bikorin Cahyono, Nova Tri Cahyono, Nova Tri Candra Kusuma Catur Iswahyudi Catur Iswahyudi Catur Iswahyudi Catur Iswayudi Danang Kastowo Dani Yulkarnain Dewo Pambudi Dimas Wiryatari Dodik Prakoso Eko Hery Suwandojo Dodik Prakoso Eko Hery Suwandojo Dzakiya, Nurul Edhy Sutanta (Jurusan Teknik Informatika IST AKPRIND Yogyakarta) Edi Winarko Eka Suteja Eko Darmanto Eko Haryanto Eko Haryanto Eko Pramono Eko Pramono Ema Utami Ema Utami (Jurusan Sistem Informasi STMIK AMIKOM Yogyakarta) Emy Setyaningsih Emy Setyaningsih Enggar Febriyanti Enie Yuliani Erfanti Fatkhiyah Erma Susanti Ermawati - Erna Kumalasari N Erna Kumalasari Nurnawati Erwin Syahrudin Eska Almuntaha Faisal Siregar Fuad Hasan Gardyas Bidari Adninda Gardyas Bidari Adninda Gatot Santoso Gatot Santoso Gunawan Wicahyono Hanafi Eko Kurniawan Hardianto Nugroho Hari Rachmadi Hartanto, Anggit Dwi Hendrik Satria Harefa Heri Sismoro Hilarion Yogi Ibnu Berliyanto G.A Ibnu Berliyanto G.A, Ibnu Berliyanto Imam Syafii Imam Syafii Imam Thoib Indarto Indarto Irwan Siswanto Jazi Eko Istiyanto (Program Magister Ilmu Komputer Sekolah Pascasarjana UGM) Joko Triyono Joko Triyono Joko Waluyo Julianto JULIANTO Jussac Maulana Masjhoer Khalil sidik Khalil Sidik Koco Anggoro Kurniati, Devi Kurniawan, Hanafi Eko Laksono Trisnantoro M Yusuf Ali Fiqri M. Abdul Alim Alami M. Ari pamungkas1 M. Rudiyanto Arief Maulana Wahid, Rindo Mazaya, Amalia Febryane Adhani Merlie Anita Miftah Farid Moh Erzal Arighi Damopolii Moh. Ishaq Yanuar Mohammad Sholeh Muh. Ibnu Habil Hanafi Muh. Ibnu Habil Hanafi, Muh. Ibnu Habil Muhamad Fatahillah Z Muhammad Arif Setyawan Muhammad Fahrizal Farid Muhammad Farid Ali Safii Muhammad Puguh Pamungkas Muhammad Rosyid Muhammad Saleh Jafri MUHAMMAD SHOLEH Muhammad Sholeh Muhammad Sholeh Munandar, Arief Mursyid Ardiansyah Mustofa Wisnu Dhamara1 Naniek Widyastuti Nansi, Maria Regina Nidia Lestari Nurcahyo, Azriel Christian Okid Parama Astirin Omar Muhammad Altoumi Alsyaibani Prabowo Budi Utomo Prita Haryani Prita Haryani Purnawan Purnawan - Purnawan Purnawan Purnawan Purnawan R. K. ST., MT., Rr. Yuliana Rahardyan Bisma Setya Putra Ramadhan, Hanan Fajar Rauf, Budi Wijaya Rendi Saputra Rio Ponco Negoro Muhammad Hakim Rizal Fakhruddin Lubis Rizki Pratama Rizqa Luviana Musyarofah Rizqi Aji Nugroho Robertus Desta Raka Siwi Robertus Desta Raka Siwi, Robertus Desta Rohmat Hidayat Rohmat Hidayat Rr Yuliana Rachmawati Kusumaningsih Rr. Yuliana Rachmawati Rr.Y. Rachmawati Kusumaningsih Rr.Yuliana Rachamawati, Rr.Yuliana Ryvan Sirait S.T., M.T, Muhammad Sholeh, Samuel Kristiyana Saryadi K T Soba Saryadi K T Soba, Saryadi K T Setya Putra, Rahardyan Bisma Siswanto - Slamet Hani, Slamet Sofyan Pariyasto Sri Hartati Stefanus Samuel Tampi Suparni Setyowati Rahayu Suraya - Suraya - Suraya ., Suraya Syafrizal S Ardiansyah Tampi, Stefanus Samuel Thaariq, Muhammad Rizqy Ath Than Raymond Toto Rusianto Triyono, Joko Uning Lestari Uning Lestari Utami, Ema Utami Utamu, Ema Vian Ardiyansyah Saputro Vian Ardiyansyah Saputro Wahyu Hidayat Wahyudi, Doni Yoga Arjanggi Nofianto Yuki Syambudi Setiadi Yuli Purwanto Yuli Purwanto Yuliana Rachmawati Yulianto Mustaqim Zeppi Maulana Bhakti