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All Journal JOURNAL OF APPLIED INFORMATICS AND COMPUTING Jurnal Tekno Kompak Piston: Journal of Technical Engineering JOURNAL OF INFORMATION SYSTEM RESEARCH (JOSH) Journal of Applied Science, Engineering, Technology, and Education Dulang: Jurnal Pengabdian Kepada Masyarakat
SINAMBELA, EKA STEPHANI
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Aerospace Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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Implementasi Perangkat IoT Terdistribusi untuk Pengendalian dan Pemantauan Irigasi Air Menggunakan Metode Drip dan Penyemprotan Nutrisi dalam Sistem Pertanian Cerdas Sinambela, Eka Stephani; Panjaitan, Jessica; Pakpahan, F. Salmonso; Simamora, Jenris; Simatupang, Frengki; Wowiling, Gerry Italiano; Sigiro, Marojahan Mula Timbul; Manalu, Istas Pratomo; Silalahi, Sari Muthia; Siagian, Pandapotan
Journal of Information System Research (JOSH) Vol 6 No 3 (2025): April 2025
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/josh.v6i3.7120

Abstract

Internet of Things (IoT) technology can enhance agricultural productivity through automated monitoring and control systems. However, many existing IoT systems are still centralized and inflexible, making integration with other systems in the field challenging. This research develops a distributed and modular (plugin) automated monitoring and control system for soil moisture management, specifically for potato cultivation. The system utilizes soil moisture sensors to measure moisture levels, which are processed by an ESP8266 microcontroller. The data is used to automatically control irrigation flow, maintaining soil moisture within the optimal range for potato plants. Additionally, the system includes a backup feature that allows manual operation in case of automatic system failure. Field tests demonstrate that the system effectively maintains soil moisture at optimal levels. Its manual operation feature also ensures continued functionality during disruptions. Therefore, this system is expected to improve efficiency and resilience in agricultural land management, particularly in dynamic environmental conditions.
SOSIALISASI DAN EDUKASI TERKAIT SERANGAN DIGITAL Silalahi, Sari Muthia; Sigiro, Marojahan MT; Sinambela, Eka Stephani; Wowiling, Gerry Italiano; Manalu, Istas; Simatupang, Frengki
Jurnal Pengabdian Masyarakat Polmanbabel Vol. 5 No. 02 (2025): DULANG : Jurnal Pengabdian Kepada Masyarakat
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/dulang.v5i02.658

Abstract

The socialisation of understanding digital attacks aims to help the community, especially students in the Toba area, regarding the types of digital attacks and how to deal with them. The socialisation activity was conducted in several junior high and senior high schools in Toba. Socialisation was also carried out to help the students understand the types of digital attacks by questionnaire. The contents of the questionnaire were to see how large the percentage of digital attacks, such as identity forgery, phishing, and data leaks, were experienced by students. The results of 315 respondents showed that digital attacks were in the "Normal" category of 18.88%, "Often" 29.33%, and "Very Often" 17.73% of respondents. The cases were attacks on personal information, defamation, hacking of social media accounts, data breaches, online fraud, the spread of hoaxes or disinformation and cyberbullying.
Adaptive File Integrity Monitoring for Container Virtualization Environments using OSSEC with Real-Time Alerting Wowiling, Gerry; Sinambela, Eka Stephani; Simatupang, Frengki; Siagian, Fabert Jody Manuel; Sibarani, Aisyah Ayu; Batubara, Indah Sari
Journal of Applied Informatics and Computing Vol. 9 No. 5 (2025): October 2025
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jaic.v9i5.10006

Abstract

In this ever-evolving digital age, container technology has become one of the main solutions in cloud computing due to its efficiency and flexibility. However, the dynamic and ephemeral nature of containers poses new challenges in terms of security, especially regarding data integrity. The implementation of OSSEC in container environments requires a tailored approach, as it lacks native support for automatically detecting new containers. Agents must be embedded within container images or installed at the host level. These agents activate each time a container runs and send monitoring data to the OSSEC server. With orchestration and automated configuration, monitoring results are stored externally, and real-time email alerts can be triggered upon detecting suspicious file changes. Container environments are increasingly targeted by cyber threats such as malware and ransomware, which pose risks of unauthorized data access or encryption. Limited file integrity monitoring within containers creates a security gap that can be exploited undetected. This research addresses the issue by implementing a File Integrity Monitoring (FIM) mechanism using OSSEC, an open-source Host Intrusion Detection System (HIDS) capable of real-time file and log monitoring, malware detection, and automated threat response. OSSEC is deployed within a Docker-based setup and integrated with a Web User Interface for visualizing logs and monitoring activity. The system includes real-time email notifications for immediate alerts. Testing through file modification scenarios confirmed OSSEC’s accuracy in detecting changes and notifying administrators. This implementation effectively strengthens data security and provides timely threat detection in containerized environments.
Pemanfaatan Sistem Informasi untuk Peningkatan Kinerja Penyedia Air Minum di Kabupaten Humbang Hasundutan Sigiro, Marojahan Mula Timbul; Wowiling, Gerry Italiano; Manalu, Istas Pratomo; Simatupang, Frengki; Sinambela, Eka Stephani; Silalahi, Sari Muthia; Panjaitan, Goklas
Jurnal Tekno Kompak Vol 18, No 2 (2024): AGUSTUS
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jtk.v18i2.3958

Abstract

Penelitian ini bertujuan untuk membangun aplikasi sistem informasi retribusi air minum yang dimanfaatkan UPT. SPAM Kabupaten Humbang Hasundutan untuk meningkatkan kinerja dan pelayanan kepada masyarakat. Pengembangan aplikasi ini bertujuan untuk memberikan efisiensi, akurasi dan akuntabilitas pelayanan, data, dan proses pembayaran biaya retribusi air minum pada UPT. SPAM dengan menggunakan metode Waterfall. Aplikasi yang dibangun ada dua bagian yaitu aplikasi dengan teknologi perangkat mobile POS (Point of Sale) yang pelayanannya langsung malalui operator lapangan, dan aplikasi berbasis web sebagai aplikasi utama untuk pengolahan dan penyimpanan data.  Aplikasi yang dibangun memiliki fitur-fitur seperti pencatatan data pelanggan, pencatatan data meter penggunaan air minum, pembayaran tagihan retribusi, manajemen data operator, monitoring dan evaluasi kinerja operator, pelaporan aduan, dan laporan keuangan. Dengan penyediaan aplikasi tersebut, UPT. SPAM memiliki sistem yang realtime dan terintegrasi sehingga terjadi peningkatan kualitas layanan terhadap Masyarakat dan peningkatan PAD karena didukung oleh sistem pencatatan dan pembayaran yang akuntabel dan efisien. Disamping itu, manfaat aplikasi ini untuk pelanggan adalah memberikan kemudahan dalam melakukan pembayaran tagihan yang akan menghemat waktu dan biaya, transparansi data penggunaan air dan informasi pembayaran serta kemudahan dalam melakukan pelaporan terhadap masalah yang terjadi di lapangan.
Performance Testing and Optimization of DiTenun Website Arlinta Christy Barus; Sinambela, Eka Stephani; Purba, Ivani; Simatupang, Jhonathan; Marpaung, Monika; Pandjaitan, Nancy
Journal of Applied Science, Engineering, Technology, and Education Vol. 4 No. 1 (2022)
Publisher : PT Mattawang Mediatama Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (547.003 KB) | DOI: 10.35877/454RI.asci841

Abstract

DiTenun website is a web-based application developed to create new motifs or new weaving patterns. This website needs to have good performance so that it can be optimally used by the users. By understanding the importance of the information available on the DiTenun website, a performance testing is necessary. This performance test aims to verify specific system performance such as response time and service availability despite receiving a large number of requests. The performance analysis of the DiTenun website was carried out by spike testing using the Apache JMeter tool. In solving the problems and improving the performance of the DiTenun website, the researcher applied website optimization by utilizing the browser cache, activating gzip compression, and eliminating rendering – blocking resources. Evaluation of each solution was carried out by using a hypothesis test, namely using a paired sample t test. The result of the test showed that each solution that was implemented can be used to improve performance in the form of load time of the DiTenun website.
Sistem Pengendalian dan Pemantauan Terpusat pada Perangkat IoT Terdistribusi Sinambela, Eka Stephani; Simatupang, Frengki; Wowiling, Gerry Italiano; Sigiro, Marojahan Mula Timbul; Manalu, Istas Pratomo; Silalahi, Sari Muthia; Siagian, Pandapotan
Piston: Journal of Technical Engineering Vol. 8 No. 1 (2024)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v8i1.48473

Abstract

Perkembangan pesat Internet of Things (IoT) telah memungkinkan berbagai aplikasi cerdas; namun, pengelolaan banyak perangkat IoT yang tersebar secara manual masih kurang efisien dan memakan waktu. Penelitian ini bertujuan untuk mengembangkan sistem pemantauan dan pengendalian terpusat untuk perangkat IoT yang tersebar dengan menggunakan arsitektur master-agent. Master berfungsi sebagai pusat kendali yang mengumpulkan data dari berbagai agent serta memungkinkan manajemen terpusat melalui API Gateway yang memfasilitasi komunikasi dan kontrol perangkat. Prototipe yang dikembangkan terdiri dari dua mode kontrol: kontrol manual untuk menyalakan dan mematikan lampu melalui antarmuka berbasis web, serta kontrol otomatis untuk pemantauan lingkungan menggunakan berbagai sensor. Hasil pengujian menunjukkan bahwa sistem ini mampu mengelola perangkat IoT secara real-time dengan efektif. Pengujian kontrol manual berhasil mengaktifkan dan menonaktifkan lampu secara jarak jauh. Pengujian kontrol otomatis untuk pemantauan tanaman mencatat suhu lingkungan stabil antara 44–46°C, kelembaban tanah pada 27%, variasi jarak sensor ultrasonik antara 2–15 cm, serta fluktuasi intensitas cahaya antara 29–120 Cd. Hasil ini membuktikan bahwa sistem dapat merespons perubahan lingkungan secara dinamis, seperti mengaktifkan pompa air saat kelembaban tanah rendah atau menyesuaikan pencahayaan berdasarkan data real-time. Dengan menerapkan arsitektur RESTful API dan komunikasi berbasis JSON, sistem ini menawarkan skalabilitas tinggi dan fleksibilitas dalam pengembangan jaringan IoT. Penelitian ini menyimpulkan bahwa sistem pengendalian dan pemantauan IoT secara terpusat meningkatkan efisiensi, fleksibilitas, serta kemudahan dalam pengelolaan perangkat, sehingga dapat diterapkan dalam berbagai bidang seperti smart home, pertanian cerdas, dan otomatisasi industri.
Design of Handoff Communication Sequence Architecture in LoRa Networks Manalu, Istas Pratomo; Simatupang, Frengki; Sinambela, Eka Stephani; Sigiro, Marojohan Mula Timbul; Wowiling, Gerry Italiano; Silalahi, Sari Muthia
Piston: Journal of Technical Engineering Vol. 9 No. 1 (2025)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v9i1.51408

Abstract

Technological advances have driven the development of IoT-based object tracking systems, where LoRa is an ideal wireless technology due to its long range and low power consumption. Challenges in implementing LoRaWAN, particularly its role in the handoff process between gateways that can disrupt communication, can be overcome by developing a more efficient handoff method. For this reason, this study presents the design of Handoff communication for the LoRa Network. We use two gateways and one transmitter node. The gateway node consists of a LoRa module and an ESP32, while the Transmitter consists of a LoRa module, an Arduino Nano, and a GPS sensor. The RSSI parameter is a determining factor in transferring connectivity paths from GW A or GW B, as it provides an RSSI threshold value of -100 dBm. We successfully designed handoff communication at each Node and conducted a mini-test. The test results show that LoRa can implement handoff techniques at a distance of 0-500 meters. This indicates that the node is in closer range to GW A. The RSSI value of GW1 is in the range of -52 dBm to -98 dBm, while the RSSI of GW2 is in a much weaker range, which is around -120 dBm to -100 dBm. As the distance increases, the RSSI value of GW1 shows a significant decrease, while the RSSI of GW B actually increases. At a distance of approximately 250 meters, there is an intersection point between the RSSI values of the two gateways, marking the optimal handoff point. Thus, this system is able to select the best gateway, provide redundancy, check gateway availability before handoff, and handle handoff failures, thereby improving the efficiency and effectiveness of data delivery.
A Web-Based Navigation Control System for Lake Toba Cleaning Using NodeMCU ESP8266 and Pulse Width Modulation (PWM) Simatupang, Frengki; Manalu, Istas Pratomo; Siagian, Pandapotan; Sigiro, Marojahan Mula Timbul; Wowiling, Gerry Italiano; Sinambela, Eka Stephani; Saragih, Ripandy; Yosheva, Grace; Silaen, Romaito
Piston: Journal of Technical Engineering Vol. 9 No. 1 (2025)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v9i1.51670

Abstract

Waste pollution in Lake Toba has become a critical environmental issue, threatening both its natural beauty and ecological sustainability. Manual waste collection methods remain limited in terms of efficiency and operational reach. This study aims to design and evaluate a web-based navigation control system for a floating surface-cleaning device utilizing the NodeMCU ESP8266 microcontroller. The system enables real-time control of direction and motor speed through a web interface, employing Pulse Width Modulation (PWM) for precise speed regulation. A prototype-based engineering approach was adopted, encompassing system design, implementation, and performance testing on land and in water environments. The experimental results indicate that the system successfully responded to all navigation commands (forward, backward, turn, pivot, and stop) with 100% accuracy under a stable local Wi-Fi network. Motor performance in water was found to be approximately 15–20% lower than on land due to fluid resistance. Battery endurance tests showed an operational time of approximately 3 hours on land and 2.1 hours in water at a 60% PWM duty cycle. Overall, the system demonstrates effective and flexible performance and holds promise for further development through the integration of sensors, camera modules, GPS-based autonomous navigation, and LoRa communication.
Co-Authors Arlinta Christy Barus Batubara, Indah Sari Frengki Simatupang Istas Pratomo Manalu Manalu, Istas Monika Marpaung, Monika Pakpahan, F. Salmonso Pandapotan Siagian Pandjaitan, Nancy Panjaitan, Goklas Panjaitan, Jessica Purba, Ivani Saragih, Ripandy Siagian, Fabert Jody Manuel Sibarani, Aisyah Ayu Sigiro, Marojahan MT Sigiro, Marojahan Mula Timbul Sigiro, Marojohan Mula Timbul Silaen, Romaito SILALAHI, SARI MUTHIA Simamora, Jenris Simatupang, Jhonathan Wowiling, Gerry Wowiling, Gerry Italiano Yosheva, Grace