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All Journal Jurnal Ilmiah Poli Rekayasa Elektron Jurnal Ilmiah ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JURNAL NASIONAL TEKNIK ELEKTRO JOIV : International Journal on Informatics Visualization Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Brilliance: Research of Artificial Intelligence Jurnal Pustaka Data : Pusat Akses Kajian Database, Analisa Teknologi, dan Arsitektur Komputer International Journal of Advanced Science Computing and Engineering International Journal of Wireless And Multimedia Communications JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development JURNAL PENGABDIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (JP3L) PERFECT: Journal of Smart Algorithms SULIWA: Jurnal Multidisiplin Teknik, Sains, Pendidikan dan Teknologi
Lifwarda Lifwarda
Politeknik Negeri Padang
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Library & Information Science Mathematics Mechanical Engineering Social Sciences Other

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Manufacturing A Fiber Optic Based Trainer Module Using The Star Topology Method Using Optical Distribution Point (Odp) And Optical Termination Box (Otb) Nilna, Mellya Gusriva; Asril, Aprinal Adila; Lifwarda, Lifwarda
JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development Vol. 2 No. 2 (2025): JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Dev
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jataed.v2i2.63

Abstract

Optical fiber is a transmission medium made from glass that is used to transmit information in the form of light. As time goes by, the need for fast telecommunications services in data exchange is increasing. However, there are problems with optical fibers such as high attenuation or connection errors that interfere with performance. In this final project, a trainer module was designed regarding splicing and measuring fiber attenuation to help students understand how to connect optics properly and correctly. This module uses devices such as ODP and OTB which are connected to each other. The research results show that the highest attenuation measured was 20.15 dB, while the lowest attenuation value was 0.29 dB. Attenuation corresponding to the calculated link budget of 1.7605 dB indicates good results, while high attenuation indicates poor quality.
Implementation Of Internet Of Things (Iot) Based Lecture Schedule In Building G Floor 3 Padang State Polytechnic Wulandari, Anggelina; Lifwarda, Lifwarda; Firdaus
International Journal of Wireless And Multimedia Communications Vol. 1 No. 1 (2024): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v1i1.6

Abstract

The internet of things-based lecture schedule aims to improve the efficiency and effectiveness of time management. Thus, students, lecturers, and staff can know the time change so that they can prevent delays. By using Arduino Uno as the main component microcontroller, RTC as a clock module that calculates the time that will be displayed on the LCD. Bell and Speaker will sound when the clock on the RTC is the same as the inputted schedule clock, then sent to IoT via the ESP01 wifi module. This tool can also be used as a medium for delivering information because it is equipped with a mic. The RTC in this tool successfully calculates the time according to real time where the Bell and Speaker can work on time according to the schedule. When the bell sounds the measured voltage is 225 volts while the speaker is 2 volts. This tool has also been connected to ThingSpeak using the ESP01 wifi module.  
Analysis Of Hybrid Relay Selection In SDR-Based Cooperative Systems Khair, Ummul; Lumasa R, Ihsan; Veronica, Vera; Lifwarda, Lifwarda; Rifka, Silfia
Brilliance: Research of Artificial Intelligence Vol. 5 No. 2 (2025): Brilliance: Research of Artificial Intelligence, Article Research November 2025
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v5i2.7135

Abstract

The cooperative communication system, involving multiple nodes that assist each other in data transmission, has been studied. In this system, the source sends information not only directly to the destination but also through an intermediate relay node. The relay receives the signal, which is then forwarded to the destination, resulting in the reception of two copies of the signal. Combining these signals results in enhanced strength and reliability. This configuration addresses signal fading issues commonly encountered in wireless communication due to reflection, scattering, and interference. The Hybrid Relay Protocol (HRP), combining Decode-and-Forward (DF) and Amplify-and-Forward (AF) methods, was implemented to improve relay efficiency and adaptability. The relay’s protocol choice depends on instantaneous Signal-to-Noise Ratio (SNR); if the SNR exceeds a threshold, DF is applied by decoding and forwarding a clean signal, otherwise, AF is used by amplifying and forwarding the received signal without decoding. Relay selection is optimized based on channel gains using a harmonic mean metric. MATLAB simulations demonstrated that the HRS system, with relay distances ranging from 4 to 12 meters, achieves significantly improved Bit Error Rate (BER) performance, for instance, obtaining BER as low as 0.00012 at 4 meters and ?23.5 dBm transmit power. Additionally, maximal ratio combining was employed at the destination, enhancing signal reliability. The results confirm the effectiveness of the HRS system for real-time applications on Software-Defined Radio (SDR) platforms, with potential for improving wireless network robustness under diverse channel conditions.
Analisis Empiris Peningkatan Performa dan Redundansi Database Menggunakan Galera Cluster Fauzan, Reski Yulian; Adha, Muhammad Reyan Dirul; Lifwarda, Lifwarda; Lubis, Romia; Putra, Yeviki Maisyah
Jurnal Pustaka Data (Pusat Akses Kajian Database, Analisa Teknologi, dan Arsitektur Komputer) Vol 5 No 2 (2025): Jurnal Pustaka Data (Pusat Akses Kajian Database, Analisa Teknologi, dan Arsitekt
Publisher : Pustaka Galeri Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55382/jurnalpustakadata.v5i2.1534

Abstract

Penelitian ini menganalisis secara empiris peningkatan performa dan redundansi sistem basis data dengan menerapkan Galera Cluster dibandingkan Single MariaDB menggunakan workload OLTP read–write. Penelitian ini memberikan validasi empiris terhadap efektivitas Galera Cluster pada skenario sumber daya terbatas. Pengujian dilakukan menggunakan tool benchmarking sysbench dengan total sumber daya hardware yang identik (16 core CPU, 8GB RAM) namun dengan arsitektur berbeda. Konfigurasi Galera Cluster menggunakan 2 node (8 core CPU, 4GB RAM masing-masing) dengan HAProxy sebagai load balancer, sementara Single MariaDB menggunakan satu server dengan 16 core CPU dan 8GB RAM. Hasil penelitian menunjukkan Galera Cluster mencapai 348,07 transaksi per detik (TPS) dibandingkan 202,99 TPS pada Single MariaDB, meningkat 71%. Galera Cluster juga menunjukkan latensi rata-rata yang jauh lebih rendah (22,97 ms vs 39,29 ms) dan latensi 95th percentile (26,20 ms vs 125,52 ms). Arsitektur ini memberikan redundansi bawaan dan high availability tanpa biaya hardware tambahan. Penelitian ini memberikan bukti empiris bahwa Galera Cluster dengan HAProxy memberikan performa dan ketersediaan yang unggul dibandingkan sistem database single-node tradisional.
PENERAPAN INTERNET OF THINGS UNTUK SISTEM PENDETEKSI DAN PENGENDALIAN ASAP DAN SUHU DALAM RUANGAN Pratama, Farhan Abdi; Rifka , Silfia; Lifwarda, Lifwarda
SULIWA: Jurnal Multidisiplin Teknik, Sains, Pendidikan dan Teknologi Vol. 3 No. 1 (2026): SULIWA: Jurnal Multidisiplin Teknik, Sains, Pendidikan dan Teknologi, Maret 202
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/suliwa.v3i1.136

Abstract

Clean air and comfortable temperature are important factors for the health and comfort of indoor occupants. Smoke, especially cigarette smoke, and high temperatures can reduce air quality and have a negative impact on health. This research aims to design and implement an Internet of Things (IoT)-based indoor smoke and temperature monitoring and control system. The system uses MQ2 sensor for smoke detection and DHT22 sensor for temperature measurement, controlled by ESP32 microcontroller connected via Wi-Fi. Sensor data is processed in real-time to automatically activate the exhaust fan and fan based on predetermined thresholds. In addition, the system provides manual control through a mobile application developed in MIT App Inventor, and data is stored in Google Sheets for historical monitoring. Test results show the system is can to accurately monitor smoke levels and temperature and control actuators both automatically and manually. Sensor data was successfully transmitted and stored in Google Sheets with minimal delay. This system provides an effective solution to improve air quality and space comfort using IoT technology.
Co-Authors - Andrizal - Hendrick Adha, Muhammad Reyan Dirul Adila , Aprinal Afrizal Yuhanef Ahmad Efendi, Rostam Amelia Yolanda Anas, Ramiati Anna Yudanur Aprinal Adila Asril Aulia Rahma, Erin Botto-Tobar, Miguel Dahlan, Andi Ahmad Fajria, Nurul Fauzan, Reski Yulian Firdaus Firdaus Firdaus Firdaus Firdaus Herry Setiawan Ihsan Lumasa Rimra Kasmar, Andre Febrian Komanjali, Yuliano Lubis, Romia Lumasa R, Ihsan Maria, Popi Mawandri, Azra Milda Yuliza Nawi, Nasrul Nilna, Mellya Gusriva Prasetia, Robby Adrian Pratama, Farhan Abdi Putra, Yeviki Maisyah Putri, Dwi Kemala Ramiati Ramiati Ratna Dewi Ratna Dewi Rifka , Silfia Rikki Vitria Rimra, Ihsan Lumasa Rivanol Chadry Ronal Hadi Silfia Rifka Siska Aulia Ummul Khair Uzma Septima veronica, Vera Wulandari, Anggelina Yenniwarti Rafsyam Yuhefizar Yuhefizar Yul Antonisfia Yulindon Yustini Zulharbi