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All Journal TEKNIK Jurnal Manajemen dan Administrasi Rumah Sakit Indonesia (MARSI) Jurnal Mandiri IT International Journal of Applied Mathematics, Sciences, and Technology for National Defense Indonesian Journal of Aerospace
Tjahjadi, Hendrana
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Aerospace Engineering Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Health Professions Library & Information Science Mathematics Physics

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Rancang Bangun Alat Pemantau Kesehatan Perorangan untuk Deteksi Dini Silent Hypoxia Kuswoyo, Heri; Susana, Ernia; Tjahjadi, Hendrana
TEKNIK Vol. 43, No. 1 (2022): May 2022
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v43i1.42752

Abstract

Silent hypoxia in Covid-19 patients and symptoms of severe hypoxemia require appropriate treatment. These cases often appear asymptomatic but risk fatal to life-threatening. One of the recommended devices is pulse oximetry. Embedded systems technologies and the Internet of Things (IoT) can develop low-cost personal health monitoring devices. This study developed a pulse oximetry prototype integrated with a digital temperature sensor and equipped with the interpretation results of both "normal" and "hypoxic" conditions. It is called OxyTemp. IoT technologies monitor user conditions remotely using the Blynk application via mobile phones. This study used Research & Development with the Reverse engineering method. The OxyTemp has Different types of prototype testing are physical and functional inspection, electrical safety testing, and performance testing of each parameter using an appropriate calibrator. The working method refers to SK Direktur Jenderal Pelayanan Kesehatan Tahun 2018 No. 041-18 on Pulse Oximeter Testing Working Methods.
Unmanned aerial vehicle classification and detection system based on deep learning, internet of military things, and PID control system Lesmana, Azka Versantariqh; Dahlan, Iqbal Ahmad; Tjahjadi, Hendrana; Prakosa, Setya Widyawan; Firdaus, Muhammad Azka
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol. 2 No. 3 (2024): International Journal of Applied Mathematics, Sciences, and Technology for Nati
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def..v2i3.439

Abstract

Indonesia is an archipelagic country situated between two continents and two oceans. With numerous islands, it is rich in natural resources but faces various military and non-military threats. One significant threat to maritime nations like Indonesia is from the air, which includes direct attacks from manned and unmanned aircraft and using aerial vehicles for intelligence and surveillance. The primary weapon system is crucial for national defense against such threats. Therefore, developing defense equipment in Indonesia must align with technological advancements to ensure quick and efficient operation. This research focuses on creating a classification and reconnaissance system for flying vehicles to enhance air defense capabilities. In the surveillance system, two servos are used for yaw and pitch axes, controlled by a Proportional, Integrative, and Derivative (PID) system. This PID control significantly improves servo movement both dynamically and statically. The system sends notifications via Telegram for monitoring, with an average FPS of 9.6. Flask is used for the website interface, averaging 6.8 FPS, and MIT App Inventor is used for the smartphone interface, averaging 7.6 FPS. This flying vehicle classification and reconnaissance system enhances Indonesia's air defense, utilizing YOLOv8 for classification, PID control for servo movements, and integrated notifications and interfaces for both web and smartphones.
Development of PIR sensor-based security system and IoT-based esp-32 wrover cam module for monitoring military headquarters and vital objects Jatiyoso, Hero Benta; Riadi, M. Farrel; Atturoybi, Abdurrosyid; Mardamsyah, Adam; Tjahjadi, Hendrana
Jurnal Mandiri IT Vol. 14 No. 1 (2025): July: Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mandiri.v14i1.437

Abstract

Military headquarters security requires advanced systems to detect intrusions and ensure real-time monitoring. This study proposes an IoT-integrated security system using PIR sensors and an ESP-32 WROVER Cam module, designed to enhance detection accuracy, automate alerts, and improve remote surveillance capabilities. The system integrates a PIR sensor for motion detection, an ESP-32 Cam for image capture, and IoT protocols for real-time data transmission via Telegram. A LoRa module extends communication range for large-scale military environments. Simulations tested response time, detection accuracy, and notification reliability under varying conditions. The system achieved a response time of 1.1–1.6 seconds, 100% buzzer activation for alarms, and consistent Telegram notification delivery. Compared to existing systems, its key innovation lies in combining low-cost hardware with IoT connectivity and LoRa-based long-range communication (up to 20–30 km), enabling efficient threat detection and remote interaction. This approach offers a scalable, energy-efficient solution for military security, outperforming traditional systems through real-time responsiveness, reliable alerts, and secure data transmission. The integration of IoT and LoRa addresses gaps in existing object detection systems, particularly in large-area surveillance.
Risk Analysis of Operation Igniter Technology System For Rocket Motor X Nugroho, Widianto; Tjahjadi, Hendrana; Yogaswara, Y. H.; Lestariana, Evie
Indonesian Journal of Aerospace Vol. 20 No. 1 (2022): Jurnal Teknologi Dirgantara
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2022.v20.a3708

Abstract

This study discusses risk assessment, and the results of the analysis on the ignition system used on the X rocket. The purpose of this study was to obtain a risk analysis obtained when operating the ignition system on the X rocket. This study used HIRADC (Hazard Identification, Risk Assessment and Determining Control) with a qualitative explanation. The results of the risk assessment in the X rocket motor testing process on the application of the ignition system, there are 10 risks in activities consisting of 8 activities that have a "low" risk level, while the other 2 have a "High" risk level. Caused by probability 1 and severity 4 which can result in device explosion as well as death of the user. The scope of the next assessment is instruments risk assessment, based on the research conducted, the results obtained from the risk assessment are 13 risks of instruments failure, consisting of 9 risks with a "low" risk value. Meanwhile, there are 2 "moderate" risks, namely a short circuit in the cable and the casing does not catch fire which can result in serious injury. Other sectors that have 2 high risk "High" are found to be at risk of not being grounded which can result in static electricity not going to ground, premature ignition during installation, explosion, which can cause death.
Analisis Pengaruh Human, Organizatiion Dan Technology Pada Implementasi Sistem Informasi Manajemen Rumah Sakit (Simrs) Terhadap Kinerja Karyawan Di Unit Kerja Rawat Jalan Rsud Depati Bahrin Ardi, Tariqul; Tjahjadi, Hendrana; Supardjo, Supardjo
Jurnal Manajemen dan Administrasi Rumah Sakit Indonesia (MARSI) Vol 10, No 1 (2026): Jurnal Manajemen dan Administrasi Rumah Sakit (MARSI)
Publisher : LPPM Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/marsi.v10i1.7930

Abstract

Berdasarkan Undang-Undang No 44 Tahun 2009 pasal 52 ayat (1) Tentang Rumah Sakit, Setiap rumah sakit wajib menerapkan sistem informasi manajemen rumah sakit (SIMRS) guna mewujudkan tata kelola pelayanan kesehatan secara efektif dan efisien. Penerapan SIMRS merupakan pelayanan non medis yang menjadikan peran penting dalam mendukung kinerja rumah sakit mencakup proses manajemen rumah sakit dalam mengelola data medis dari pelayanan pasien hingga pengelolaan administrasi dan keuangan. Penelitian ini bertujuan menganalisis pengaruh implementasi SIMRS menggunakan metode HOT-Fit (Human, Organization, and Technology) dalam meningkatkan kinerja karyawan pada unit  kerjarawat jalan di RSUD Depati Bahrin. Penelitian menggunakan pendekatan metode deskriptif mix method dengan explanatory design melibatkan 102 pegawai rawat jalan yang dipilih menggunakan purposive sampling. Data primer dikumpulkan melalui kuesioner terstruktur dan wawancara mendalam serta observasi dianalisis menggunakan regresi linear berganda. Hasil Uji-t menunjukkan Human menunjukan berpenagruh korelasi positif secara signifikan terhadap kinerja pegawai (t sama dengan 2,23 atau p sama dengan 0,01), organization menunjukan korelasi positif secara signifikan  terhadap kinerja pegawai (t sama dengan 2.73 atau p sama dengan 0,03), sedangkan technology menunjukan korelasi positif namun tidak signifikan terhadap kinerja pegawai (t sama dengan 0.13 atau p saam dengan 0,89). Hasil Uji Fmenunjukan Technology, human dan Organization dalam implementasi SIMRS secara simultan memiliki korelasi positif dengan kontibusi 75% secara signifikan terhadap kinerja karyawan dengan persamaan Y sama dengan 6.99 + 0.01X1 + 0.30 X2 +0.60  X3 + e. ( F sama dengan 63.7 atau R2 sama dengan 0.75 atau p sama dengan 0.00). Evaluasi keberhasilan penerapan SIMRS dapat melalui dimensi human dan organization serta technology untuk rencana strategi keputusan dalam pengembangan dan pengelolaan implementasi SIMRS dalam meningkatkatkan efisien dan efektivitas dalam tatakelola pelayanan rumah sakit yang bermutu. Kata kunci: SIMRS, Kinerja Karyawan, Rumah Sakit, HOT-Fit
Co-Authors Ardi, Tariqul Atturoybi, Abdurrosyid Dahlan, Iqbal Ahmad Firdaus, Muhammad Azka Heri Kuswoyo Jatiyoso, Hero Benta Lesmana, Azka Versantariqh Lestariana, Evie Mardamsyah, Adam Nugroho, Widianto Prakosa, Setya Widyawan Riadi, M. Farrel Supardjo Supardjo Susana, Ernia Y. H. Yogaswara, Y. H.