Article Per Year (5 Year)
p-Index From 2021 - 2026
3.234
P-Index
This Author published in this journals
All Journal Jurnal SPEKTRUM Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI) Electron: Jurnal Ilmiah Teknik Elektro VISA: Journal of Vision and Ideas Scientific Journal of Informatics Jurnal SPEKTRUM
Ngurah Indra ER
Department Of Electrical Engineering, Udayana University
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences

Published : 30 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search
Journal : Jurnal SPEKTRUM

 1 
IMPLEMENTASI API TELEGRAM SEBAGAI ANTARMUKA MANUSIA-MESIN UNTUK SISTEM MONITORING DAN NOTIFIKASI KONDISI REAL-TIME INFRASTRUKTUR PUBLIK Joni Wijaya Fathoni; Ngurah Indra ER; I Wayan Sukerayasa
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p2

Abstract

Public Street Lighting (PJU) is a crucial component of public infrastructure, but ineffective real-time maintenance often leads to slow damage detection, resulting in energy waste, high maintenance costs, and increased safety risks. Previous research has highlighted the importance of proactive monitoring systems based on the Internet of Things (IoT) for PJU energy efficiency. However, conventional Human-Machine Interface (HMI) solutions such as custom mobile applications are often expensive and inflexible. This research proposes the implementation of the Telegram API as a low-cost HMI for a real-time monitoring and damage notification system for PJU. This system integrates an ESP32 microcontroller with an LDR sensor, ultrasonic sensor, and PZEM-004T module for acquiring data on light intensity, traffic activity, and electricity consumption. The Telegram Bot is utilized to send monitoring data and damage notifications in real-time to operators without requiring additional applications or dedicated servers. The main innovation lies in using Telegram as the primary communication medium, which is fast, secure, and efficient. Test results show that the system successfully detects and notifies light conditions and monitors energy consumption accurately, with notifications received within 1-2 seconds as long as the internet connection is stable. This implementation proves that the Telegram API is a functional, responsive, secure, and cost-effective HMI solution for public infrastructure management, offering flexibility and ease of access across various platforms.
PENERAPAN METODE AGILE SCRUM DALAM PENGEMBANGAN SISTEM INFORMASI ADMINISTRASI KEGIATAN COASS (CO-ASSISTANT) PADA RUMAH SAKIT PENDIDIKAN GIGI DAN MULUT I Gusti Ngurah Ari Wira Nugraha; Ngurah Indra ER; Komang Sri Utami; Fajar Purnama; I Wayan Shandyasa
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p10

Abstract

The manual administration of the Co-Assistant (Coass) program at Dental and Oral Education Hospitals is often inefficient, prone to delays, and lacks transparency in data handling. To address these limitations, this study implemented a web-based information system developed using the Agile Scrum methodology. Development was carried out through five iterative sprints, totaling 106 story points, enabling the team to incrementally build and refine system features in alignment with stakeholder needs. The Scrum approach not only facilitated the completion of the product backlog but also proved instrumental in managing complex business logic and ensuring seamless inter-module integration. Key outcomes include enhanced efficiency in logbook recording, streamlined clinical assessment workflows, and improved data transparency. These results suggest that Agile Scrum is well-suited for dynamic, semi-academic environments such as teaching hospitals. This research offers a replicable, adaptive development model that can guide other health education institutions in accelerating the digital transformation of their academic and clinical administrative processes.
EVALUASI KEBERGUNAAN SISTEM INFORMASI ADMINISTRASI COASS MENGGUNAKAN SYSTEM USABILITY SCALE (SUS) Kadek Rangga Dwipayana; Ngurah Indra ER; I Wayan Shandyasa; Fajar Purnama; Komang Sri Utami
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p19

Abstract

The adoption of new technology in professional settings is often hindered by low user acceptance, making usability a key factor in successful implementation. This study aims to assess the perceived usability of a web-based administrative information system for the Coass program at the Dental and Oral Hospital (RSGM). The evaluation used the System Usability Scale (SUS) method with 41 respondents, including Coass students, dentists, and administrative staff. The average SUS score was 80.121, categorized as "Excellent." These results indicate that the system is highly user-friendly and well-accepted, reflecting effective interface design and user experience as strong indicators of institutional adoption.
OPTIMALISASI DETEKSI WAJAH DLIB-HOG PADA CITRA INTENSITAS RENDAH DENGAN PREPROCESSING CLAHE David Clemens Sumampouw; Prahasta Napolado Damanik; Feliks Sinaga; I Made Oka Widyantara; Ngurah Indra ER
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p25

Abstract

Face decection using Dlib-HOG offers high performance under ideal lighting condition but significantly degrades when applied to low-light images. This study evaluates the effectiveness of Contrast Limited Adaptive Histogram Equalization (CLAHE) as a preprocessing method to enhance face detection accuracy under poor lighting conditions. CLAHE is applied to grayscale images to improve local contrast without introducing excessive artifacts, thereby making facial features more distinguishable for the HOG-based algorithm. Experiments were conducted on a facial image dataset with varied lighting conditions, comparing detection results before and after preprocessing. The results show a notable improvement in detection accuracy from 85.7% to 96.4% and a reduction in false negatives, with only a minimal increase in processing time. These findings confirm that CLAHE is an efficient and lightweight enhancement technique for improving the performance of Dlib-HOG on low-quality images.
EVALUASI KUALITAS TEKNIS SISTEM INFORMASI ADMINISTRASI COASS MENGGUNAKAN GOOGLE LIGHTHOUSE Made Dhyo Pradnyadiva; Ngurah Indra ER; Fajar Purnama; Komang Sri Utami; I Wayan Shandyasa
Jurnal SPEKTRUM Vol. 12 No. 4 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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

Abstract

The successful adoption of an information system is highly dependent on its technical quality, including performance, accessibility, adherence to Best Practices, and SEO compliance. This study aims to evaluate the technical quality of a web-based information system for Coass (clinical internship) administration using Google Lighthouse. The audit was conducted on three key user interfaces: the Admin, Doctor, and Student Dashboards. The evaluation focused on four main categories: Performance, Accessibility, Best Practices, and SEO. The results demonstrated outstanding scores across all tested pages, with Performance scoring between 99–100, Accessibility at 95–96, and perfect scores (100) in both Best Practices and SEO. These results confirm that the system exhibits a high level of technical quality and aligns with modern web development standards. The findings indicate that the system delivers not only functional capabilities but also speed, reliability, and a highly optimized user experience.
Co-Authors Adi Wiranata, K. N. Amanda Saraswati, Ni Putu Andika Pranata, I Kadek Anugrah Br. Ginting, Putri Binti Dona, Sufiana Budiastra, IN David Clemens Sumampouw Dewa Made Mahendra Yudha Dewa Made Wiharta Diafari, G A K Dipta, I Made Yogaswara Eka Yayuk Fransiska Simak Fajar Purnama Fajar Purnama Feliks Sinaga Gede Krisna Andika Putra Gede Sukadarmika I Dewa Gede Aditya Pemayun I G. A. K. Diafari Djuni Hartawan I Gusti Agung Putu Raka Agung, I Gusti Agung Putu I Gusti Ngurah Ari Wira Nugraha I Gusti Ngurah Arya Tri Andhika I Made Oka Widyantara I Made Yogaswara Dipta I Md. Anggar Dwi A, I Md. Anggar Dwi A I Wayan Shandyasa I Wayan Sukerayasa I.W. Aryadi Ida Ayu Dwi Giriantari IGB Alit Putra Wijaya IGM.W.S. Handdy IGP. Agus Aries Pratama IGst Ngr PT. Adi S.P. Joni Wijaya Fathoni K.T. Efendi Kadek Rangga Dwipayana Komang Sri Utami L.D. Purnamasari Lina wati Linawati linawati linawati Linawati Linawati Made Dhyo Pradnyadiva Made Sudarma Maisha Putra, I Gusti Agung Ngurah Melky Sedek Hosea Halim Muhammad Audy Bazly N.M.E.P. Astiti Ni Made Ary Esta Dewi Wirastuti Nurul Salsabila Wardhani Nyoman Pramaita Nyoman Wendy Saputra Oktafiana Susanti, Baiq Dwinda Pande Ketut Sudiarta Pande Mastra Sedana Pande Putu Wahyu Pramanda Paramitha Sekar Putri A.P., Ni Made Permata Sari, Indah Ayu Prahasta Napolado Damanik Purnawan, I Putu Abdi R.S.E.C. Nesa Rendi Gustina Setiawan, Putu Ayu Citra Vina Yuliani, Ni Putu W. Setiawan Widyadi Setiawan Wikadhyana, I Putu Gde Raditya Yansen Andriyanto Yoga, I Putu Sudharma