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All Journal Jurnal Ilmu Komputer dan Agri-Informatika Jurnal TIMES CogITo Smart Journal Jurnal Tata Kelola dan Kerangka Kerja Teknologi Informasi Jurnal Informatika dan Rekayasa Perangkat Lunak Journal of Engineering, Computer Science and Information Technology (JECSIT) International Journal of Health, Engineering and Technology Jurnal Ilmiah Informatika dan Ilmu Komputer Bulletin of Social Informatics Theory and Application Journal of Artificial Intelligence and Technology Information Journal of Information Technology, Software Engineering and Computer Science Indonesian Journal of Intelligence Data Science (IJIDS) Jurnal Lentera: Penelitian dan Pengabdian Masyarakat Darma Abdi Karya: Jurnal Pengabdian Kepada Masyarakat Jurnal Informatika dan Rekayasa Perangkat Lunak Journal of Information Technology Jurnal Publikasi Sistem Informasi dan Manajemen Bisnis INTECH - Informatika Dan Teknologi
Tenda, Edwin
Sam Ratulangi University
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary Other

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Pengembangan Chatbot Perpustakaan Berbasis Retrieval-Augmented Generation (RAG) pada Telegram Elrica Meriana Isabel Tutu; Benny Pinontoan; Edwin Tenda; Christian A. J. Soewoeh; Mahardika I. Takaendengan; Stephano C. W. Ngangi
INTECH Vol. 7 No. 1 (2026): INTECH (Informatika Dan Teknologi)
Publisher : Informatics Study Program, Faculty of Engineering and Computers, Baturaja University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54895/intech.v7i1.3435

Abstract

The library of Sam Ratulangi University (UNSRAT) has a large collection of books and academic resources; however, users still experience difficulties in obtaining book availability information quickly and efficiently. This study aims to develop and evaluate a Telegram-based chatbot using a Retrieval-Augmented Generation (RAG) approach integrated with the GPT-4.1-mini Large Language Model (LLM). The system was developed using the Waterfall method and implemented through the n8n workflow automation platform by integrating Telegram Bot, MySQL, and Pinecone as a vector database. The chatbot applies a Text-to-SQL RAG mechanism, where user questions are converted into embeddings, matched with database context, and transformed into SQL queries limited to SELECT operations. System evaluation was conducted using Black Box Testing, User Acceptance Testing (UAT), and RAG evaluation metrics consisting of Answer Relevancy and Faithfulness. The results show that the chatbot successfully performs its main functions and achieved a UAT score of 82.3%, while Answer Relevancy and Faithfulness obtained scores of 100%. The developed system is capable of providing relevant and interactive information regarding library collections.
Design of Health Application Prototype "Medimate" Using Design Thinking And System Usability Scale (SUS) Frank Emmanuel Wuaten; Djoni Hatidja; Mahardika Inra Takaendengan; Edwin Tenda; Christian Alderi Jeffta Soewoeh; Wisard Widsli Kalengkongan
Jurnal Informatika dan Rekayasa Perangkat Lunak Vol. 7 No. 1 (2026): Volume 7 Number 1 March 2026
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jatika.v7i1.1607

Abstract

The rapid digitization of healthcare in Indonesia reveals significant usability gaps, with popular applications like Halodoc and Alodokter showing inconsistent System Usability Scale (SUS) scores. Specifically, existing platforms often prioritize feature completeness over user-centered interface design, resulting in navigation ambiguities. Background information highlights that poor UX leads to user abandonment. Therefore, optimizing interface design is crucial. This research aims to design a user-centered health application prototype, "Medimate," to address critical interface and navigation deficiencies. The study employs a mixed-methods approach, utilizing the five-stage Design Thinking framework (Empathize, Define, Ideate, Prototype, Test) for development and SUS for quantitative evaluation. Data collection involved in-depth interviews with two user personas to identify pain points, followed by usability testing with 36 respondents. Responses were collected via Google Forms to facilitate remote data gathering. Results indicate that "Medimate" effectively resolves identified UX issues, achieving a mean SUS score of 80.42, classified as Grade A- (Excellent). Key design improvements include transparent pricing structures, intuitive navigation flows, and integrated mental health features. The study concludes that the Design Thinking approach significantly enhances usability metrics in health applications. "Medimate" demonstrates high acceptability and viability for further functional development. Future research should expand sample sizes to include broader demographics and evaluate backend performance. This study contributes a validated design framework for improving digital health accessibility in emerging markets.
Design and Usability Evaluation of a Web-Based Car Service Monitoring System at FocusAuto Darlene Syaroon Asalui; Benny Pinontoan; Mahardika Inra Takaendengan; Edwin Tenda; Stephano Caesar Wenston Ngangi; Dodisutarma Lapihu
Jurnal Informatika dan Rekayasa Perangkat Lunak Vol. 7 No. 2 (2026): Volume 7 Number 2 June 2026
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jatika.v7i2.1609

Abstract

FocusAuto Repair Shop currently relies on manual WhatsApp updates for service status, resulting in delayed responses, inconsistent information, and limited transparency for customers. This condition reflects a broader challenge in information system adoption among Indonesian MSMEs. This study aims to design and implement a web-based car service monitoring system using the Rapid Application Development (RAD) method and evaluate its usability using the System Usability Scale (SUS). The system was developed through four RAD stages: Planning, Design, Construction, and Implementation, utilizing Laravel, Bootstrap, and MySQL. Key features include real-time status tracking, customer data management, and PDF invoice generation. System functionality was validated through Black-box testing involving 18 test scenarios for admin and customer modules. Usability was evaluated using the SUS questionnaire distributed to 10 FocusAuto customers. Results indicate that all 18 test scenarios passed successfully, confirming system reliability and functional compliance. The usability evaluation yielded an average SUS score of 85.25, categorizing the system as Excellent. These findings demonstrate that the developed system effectively replaces manual communication methods, significantly improving service transparency and operational efficiency at FocusAuto. The study concludes that web-based monitoring systems enhance customer satisfaction in automotive MSMEs. Future work recommends cloud deployment and WhatsApp API integration to further maximize accessibility and automation.
User Satisfaction Analysis of Streaming Applications Using the Technology Acceptance Model David Kalwi Manullang; Yohanes A. R Langi; Dodisutarma Lapihu; Mahardika I. Takaendengan; Eric Alfonsius; Edwin Tenda
J-INTECH ( Journal of Information and Technology) Vol 14 No 02 (2026): Journal of Information and Technology
Publisher : LPPM Universitas Bhinneka Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32664/j-intech.v14i02.2313

Abstract

The rise of information and communication technology has led to the development of several digital platforms, especially in the entertainment industry, such as community-driven streaming apps. One of the growing platforms is Bstation, which provides anime, comics, and game content. However, in its implementation, several issues are still encountered, such as difficulties in finding content due to irrelevant search results, limited content availability and delayed episode updates, as well as suboptimal viewing experiences, including streaming interruptions and audio-video desynchronization. These problems have an impact on decreasing user comfort, usage frequency, and users’ intention to continue using the application. This investigation assesses Bstation application satisfaction levels through Technology Acceptance Model (TAM) application. Employing quantitative questionnaire methodology, study tests key variables: Perceived Usefulness (PU), Perceived Ease of Use (PEOU), Attitude Toward Using (ATU), Behavioral Intention (BI), and Actual Use (AU). Although BI and AU correlations appear insignificant, integrated variables clearly impact ATU. Data confirms perceived benefits and ease drive user satisfaction, overshadowing actual usage pattern.
PENGEMBANGAN DAN PENERAPAN TEKNOLOGI IOT PADA SISTEM PRECISION FARMING UNTUK BUDIDAYA JAGUNG DI KABUPATEN BOLAANG MONGONDOW UTARA, SULAWESI UTARA Edwin Tenda; Adeleyda M W Lumingkewas; Siska Ayu Widiana; Eliasta Ketaren
Jurnal TIMES Vol 15 No 1 (2026): Jurnal TIMES
Publisher : STMIK TIME

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51351/jtm.15.1.2026942

Abstract

Kabupaten Bolaang Mongondow Utara merupakan wilayah agraris di Provinsi Sulawesi Utara dengan Jagung sebagai salah satu komoditas utama. Namun, budidaya Jagung masih menghadapi berbagai kendala, seperti perubahan kondisi lingkungan, keterbatasan monitoring lahan secara real-time, dan rendahnya pemanfaatan teknologi digital. Penelitian ini bertujuan mengembangkan dan menerapkan sistem precision farming berbasis Internet of Things (IoT) untuk mendukung monitoring lingkungan budidaya jagung secara real-time di Kecamatan Bintauna. Sistem dikembangkan menggunakan Raspberry Pi 4 dengan integrasi sensor DHT11, BH1750, sensor curah hujan, sensor anemometer, dan Mi Flora Plant Sensor. Data sensor dikirim melalui internet dan disimpan pada Google Sheets sebagai media monitoring berbasis cloud. Metode penelitian meliputi studi pustaka, survei lapangan, pengumpulan data petani, analisis kebutuhan sistem, pengembangan sistem, serta pengujian blackbox dan usability testing. Hasil penelitian menunjukkan sistem mampu melakukan monitoring lingkungan pertanian secara real-time setiap 10 menit. Hasil usability testing menunjukkan tingkat penerimaan sistem sebesar 92,4%, sedangkan hasil kuesioner petani menunjukkan tingkat penerimaan teknologi IoT sebesar 83,6%. Hasil penelitian menunjukkan bahwa precision farming berbasis IoT berpotensi mendukung transformasi digital pertanian Jagung di Kabupaten Bolaang Mongondow Utara.
IMPLEMENTASI DIGITAL SIGNAGE UNTUK PENYEBARAN INFORMASI AKADEMIK DI JURUSAN MATEMATIKA FMIPA UNSRAT Anna S. Ruitan; Benny Pinontoan; Edwin Tenda; Eliasta Ketaren; Christian A J Soewoeh; Stephano C Q Ngangi; Dodisutarma Lapihu
Jurnal TIMES Vol 15 No 1 (2026): Jurnal TIMES
Publisher : STMIK TIME

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51351/jtm.15.1.2026945

Abstract

Penyebaran informasi akademik di Jurusan Matematika FMIPA UNSRAT masih dilakukan melalui media konvensional seperti papan pengumuman dan grup WhatsApp sehingga informasi sering tersebar secara tidak terpusat, diperbarui secara manual, dan kurang mudah diakses oleh mahasiswa maupun dosen di lingkungan jurusan. Penelitian ini bertujuan untuk merancang dan mengembangkan aplikasi digital signage sebagai media penyebaran informasi akademik yang terpusat di Jurusan Matematika UNSRAT. Metode pengembangan sistem yang digunakan adalah Waterfall yang meliputi tahap identifikasi masalah, analisis kebutuhan, perancangan sistem, implementasi, dan pengujian. Sistem dikembangkan menggunakan bahasa pemrograman Python dengan SQLite sebagai basis data lokal. Aplikasi yang dikembangkan terdiri dari Admin Application untuk pengelolaan informasi akademik dan Display Application untuk menampilkan informasi melalui layar publik secara real-time. Hasil penelitian menunjukkan bahwa sistem mampu menampilkan jadwal penggunaan ruangan, jadwal seminar, pengumuman, dan running text secara terpusat melalui digital signage display. Berdasarkan hasil Black-Box Testing seluruh fungsi utama sistem berjalan sesuai kebutuhan, sedangkan User Acceptance Testing memperoleh tingkat penerimaan sebesar 93,31% dari mahasiswa dan 100% dari administrator. Sistem yang dikembangkan dinilai mampu meningkatkan visibilitas, aksesibilitas, dan sentralisasi penyebaran informasi akademik di lingkungan jurusan.
Design and Implementation of a Blockchain-Based Digital Gold Trading System for Transaction History Recording Gaizka Mendieta Bawias; Mans Lumiu Mananohas; Edwin Tenda
Journal of Information Technology, Software Engineering and Computer Science (ITSECS) Vol. 4 No. 3 (2026): Volume 4 Number 3 July 2026
Publisher : PT. Tech Cart Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58602/itsecs.v4i3.379

Abstract

Digital gold services depend on transaction histories because every purchase or sale changes a user's rupiah and gold balances. A centralized database supports efficient operations, but it does not by itself provide users with an independently verifiable record outside the operator's system. This study developed a web-based prototype that uses Ethereum Sepolia as a supplementary evidence layer for approved digital gold transactions. The study followed an applied system-development approach and the Waterfall model, supported by a literature review and observation of common digital gold workflows. The prototype separates end-user and administrator roles. Buy and sell requests remain pending until administrative review; rejected requests do not alter balances, whereas approved requests are submitted through MetaMask to a Solidity smart contract. The resulting transaction hash and block number are retained with the operational history in MySQL. The application was implemented with React, TypeScript, Tailwind CSS, Node.js, and Express.js. Black-box testing covered 24 application scenarios and nine blockchain-integration scenarios. All 33 scenarios passed, including insufficient-balance handling, role separation, approval and rejection states, purchase and sale recording, explorer verification, and consistency between the application ledger and Sepolia evidence. The results demonstrate the feasibility of using a public testnet as an additional transaction-evidence layer rather than as a replacement for the operational database. However, the prototype uses simulated balances and prices and does not establish the existence of physical gold or production-level security, scalability, and economic viability.
Purwarupa Sistem Internet of Things (IoT) untuk Pemberian Pakan Otomatis pada Peternakan Babi Tiarabella Kalaena; Djoni Hatidja; Edwin Tenda
Journal of Information Technology, Software Engineering and Computer Science (ITSECS) Vol. 4 No. 4 (2026): Volume 4 Number 4 October 2026 (Issue in Progress)
Publisher : PT. Tech Cart Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58602/itsecs.v4i4.385

Abstract

Pemberian pakan pada peternakan babi secara manual membutuhkan waktu, tenaga, dan perhatian yang besar, serta sering kali menimbulkan ketidakkonsistenan jadwal dan takaran pakan. Ketidakteraturan tersebut berpotensi mengganggu pertumbuhan dan produktivitas ternak. Penelitian ini bertujuan untuk merancang dan membangun purwarupa sistem pemberian pakan otomatis berbasis Internet of Things (IoT) yang terintegrasi dengan pemantauan suhu, kelembaban, sisa stok pakan, serta kendali jarak jauh melalui web dashboard. Sistem dikembangkan menggunakan metode Prototype yang meliputi tahap identifikasi kebutuhan, perancangan, pengembangan, pengujian, serta evaluasi dan perbaikan. Perangkat keras mengintegrasikan mikrokontroler ESP32 sebagai pengendali utama, sensor DHT22 untuk mengukur suhu dan kelembaban udara, sensor ultrasonik HC-SR04 untuk mengukur sisa pakan, motor servo MG996R sebagai pembuka/penutup katup pakan, layar LCD 16x2 I2C sebagai tampilan lokal, dan web dashboard sebagai antarmuka pemantauan dan pengendalian jarak jauh. Penjadwalan otomatis diatur pada pukul 08.00 dan 17.00 WITA menggunakan koordinasi waktu Network Time Protocol (NTP). Kalibrasi distribusi pakan pelet komersial menunjukkan motor servo beroperasi stabil pada sudut bukaan 145 derajat dengan rata-rata waktu pembukaan 4,77 detik untuk mengeluarkan pakan sebanyak 2 Kg. Hasil pengujian sensor DHT22 menunjukkan akurasi suhu yang tinggi dengan rata-rata selisih 0,19°C (eror 0,57%), sedangkan pembacaan kelembaban memiliki selisih rata-rata 9,8% (eror 16,90%) yang dikompensasi melalui offset program agar tidak mengurangi keandalan pemantauan kandang. Kalibrasi sensor ultrasonik pada wadah berkapasitas 3 Kg mencapai akurasi 96,14% dengan rata-rata selisih 0,062 Kg. Pengujian fungsionalitas Blackbox pada 10 skenario dinyatakan valid, didukung evaluasi kuantitatif berupa keberhasilan transmisi data 100%, latensi respon dashboard 1,2 hingga 2,5 detik, dan pemulihan rekoneksi Wi-Fi rata-rata 3,4 detik. Sistem ini berpotensi membantu mengurangi beban waktu dan tenaga peternak dalam proses pemberian pakan dan pemantauan mikroklimat kandang secara real-time.
Designing The UI/UX Of The RRQ Arena Manado Website Using Design Thinking To Enhance User And Admin Experience Cloudio C Sahwat; Charles E. Mongi; Stephano C.W. Ngangi; Edwin Tenda; Mahardika Inra Takaendengan; Dodisutarma Lapihu
International Journal of Health Engineering and Technology Vol. 5 No. 3 (2026): Vol. 5 No. 3 SEPTEMBER 2026
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijhet.v5i3.1133

Abstract

Cloudio Chrestinatalean Sahwat. UI/UX Design of RRQ Arena Manado Website Based on Design Thinking to Enhance User Experience for Users and Admins. Undergraduate Thesis. Information Systems Study Program, Department of Mathematics, Faculty of Mathematics and Natural Sciences, Sam Ratulangi University, Manado. Advisors: (I) Mner Charles E. Mongi, S.Si., M.Si., (II) Mner Stephano C.W. Ngangi, S.T., M.T. RRQ Arena Manado currently lacks an integrated official website, causing tournament registration and management to rely on Instagram, Google Forms, Google Sheets, and Excel. This study aims to design the UI/UX of the RRQ Arena Manado website using the Design Thinking method, consisting of Empathize, Define, Ideate, Prototype, and Test. The research produced a High-Fidelity Prototype in Figma and was evaluated using Usability Testing and the User Experience Questionnaire Short (UEQ-S). The results showed improvements in user and admin performance, with user Success Rate increasing from 61% to 78% and Time on Task decreasing from 175 to 84 seconds. Admin Success Rate increased from 50% to 72%, while Time on Task decreased from 210 to 74 seconds. The UEQ-S results showed good pragmatic and hedonic quality.
Pengembangan Pengalaman Pengguna dan Antar Muka Pengguna pada Aplikasi Pejabat Pengelola Informasi dan Dokumentasi (PPID) Bp2MI di KP2MI Manado Siallagan, Betaria Klara; John S. Kekenus; Edwin Tenda; Mahardika Takaedengan; Dodisutarma Lapihu; Stephano C. W. Ngangi
Jurnal Publikasi Sistem Informasi dan Manajemen Bisnis Vol. 5 No. 3 (2026): September : Jurnal Publikasi Sistem Informasi dan Manajemen Bisnis
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jupsim.v5i3.7869

Abstract

Pemanfaatan teknologi informasi pada layanan publik, khususnya pada Badan Pelindungan Pekerja Migran Indonesia (KP2MI) Manado, diwujudkan melalui aplikasi Pejabat Pengelola Informasi dan Dokumentasi (PPID). Namun, identifikasi awal menunjukkan adanya kendala pada pengalaman pengguna (UX) dan antarmuka pengguna (UI) aplikasi tersebut, seperti navigasi yang membingungkan dan tata letak yang kurang intuitif. Kondisi ini berpotensi menghambat akses informasi bagi Pekerja Migran Indonesia (PMI) dan keluarganya. Oleh karena itu, penelitian ini bertujuan untuk melakukan pengembangan dan perancangan ulang UI/UX pada aplikasi PPID BP2MI Manado guna meningkatkan efektivitas penyampaian informasi. Penelitian ini menggunakan metodologi Design Thinking yang terdiri dari tahapan Empathize, Define, Ideate, Prototype, dan Test. Pengumpulan data dilakukan secara kualitatif melalui observasi dan wawancara mendalam dengan staf KP2MI serta PMI. Purwarupa aplikasi kemudian dikembangkan menggunakan platform Kodular. Selanjutnya, evaluasi hasil perancangan ulang dilakukan menggunakan metode System Usability Scale (SUS) untuk mengukur tingkat kegunaan dan kepuasan pengguna secara objektif. Hasil akhir dari penelitian ini diharapkan berupa purwarupa aplikasi antarmuka yang interaktif dan tervalidasi kegunaannya, yang dapat memberikan kemudahan akses informasi bagi PMI serta menjadi model optimalisasi layanan digital bagi lembaga pemerintah.
Co-Authors Adeleyda M W Lumingkewas Aditya Lapu Kalua Alfonsius, Eric Alita, Debby Andreas Robert Langi , Yohanes Andreuw Vandy Lengkong Andrew Lengkong Andrew Lengkong Andria K. Wahyudi Anna S. Ruitan Aprilyani, Lilis Dwi Sapta Armando, Junando Arthur G. Pinaria Arundaa, Rillya Baba Barus Benny Pinontoan Benny Pinontoan Benny Pinontoan Bobby Polii Charles E. Mongi Chriestie E. J. C. Montolalu Chriestie Ellyanne Juliet Clara Montolalu Chriestie Montolalu, Chriestie Christian Alderi Jeffta Soewoeh cindy Lahama Cloudio C Sahwat Darlene Syaroon Asalui David Kalwi Manullang Dedie Tooy Delon Daniel Wolayan Djoni Hatidja Dodisutarma Lapihu Dodisutarma Lapihu Dodisutarma Lapihu Dyah Ayu Megawaty Eliasta Ketaren Eliasta Ketaren Eliasta Ketaren Eliasta Ketaren, Eliasta Elrica Meriana Isabel Tutu Frangky J. Paat Frank Emmanuel Wuaten Gabriell Cristiano Agung Taroreh Gaizka Mendieta Bawias Hans Christian Arief Imas Sukaesih Sitanggang Iqbal Firdaus Islam, Noorul Jantje Pongoh John S. Kekenus Juan Sebastian Sijron Lahope Kinzie Feliciano Pinontoan Lapihu, Dodisutarma Legi, Fabio Kevin Williams Lonteng, Alfa Luther Latumakulita Mahardika I. Takaendengan Mahardika I. Takaendengan Mahardika I. Takaendengan Mahardika Inra Takaendengan Mahardika Inra Takaendengan Mahardika Inra Takaendengan Mahardika Takaedengan Mandagi, Franklin Mans Lumiu Mananohas Megastin M. Lumembang Mongi, Charles Efraim Montolalu, Chriestie Ellyanne Clara Juliet Muhammad Saefudin Ngangi, Stephano Caesar Wenston Parluhutan Siahaan Pioh, Diane Prisilia Lumentah, Sweety Reymon Rotikan Rillya Arundaa Rinny Mamarimbing Samola, Jonathan Sandra Pakasi Sanriomi Sintaro Saroyo Saroyo Siallagan, Betaria Klara Siska Ayu Widiana Sofia Wantasen Sofiana Paendong, Marline Stenly Ibrahim Adam Stephano C Q Ngangi Stephano C. W. Ngangi Stephano C. W. Ngangi Stephano C.W. Ngangi Stephano Caesar Wenston Ngangi Stephano Caesar Wenston Ngangi Ngangi Stephano Ngangi Takaendengan, Mahardika Inra Tambalean, Feergio Given Majesty Tiarabella Kalaena Tohap Manurung Trianita, Maria Valda Berlian Reswara Palembatas Wisard Kalengkongan Wisard Widsli Kalengkongan Yohanes A. R Langi