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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Journal of Educational, Health and Community Psychology JUITA : Jurnal Informatika Khazanah Informatika: Jurnal Ilmu Komputer dan Informatika Sinkron : Jurnal dan Penelitian Teknik Informatika JUTEI (Jurnal Terapan Teknologi Informasi) Jurnal EDUTECH Undiksha ComTech: Computer, Mathematics and Engineering Applications bit-Tech Jurnal Leverage, Engagement, Empowerment of Community (LeECOM) Jurnal Informatika dan Sistem Informasi (JUISI) Budimas : Jurnal Pengabdian Masyarakat TIN: TERAPAN INFORMATIKA NUSANTARA Jurnal Teknik Informatika (JUTIF) International Journal of Computer and Information System (IJCIS) Jurnal Pendidikan dan Pengabdian Masyarakat International Journal of Review Management Business and Entrepreneurship (RMBE)
Mychael Maoeretz Engel
Universitas Ciputra Surabaya
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REAL TIME ONLINE EXAM PROCTORING SYSTEM IN HIGHER EDUCATION USING WEBRTC TECHNOLOGY Maoeretz Engel, Mychael; Agustinus, Jeems Terri
Jurnal Teknik Informatika (Jutif) Vol. 4 No. 6 (2023): JUTIF Volume 4, Number 6, Desember 2023
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2023.4.6.1564

Abstract

The low level of trust in online exam results from students is a major problem because it is difficult to monitor whether test takers are taking the exam honestly according to their own abilities. Even though it has been assisted by the presence of video conferencing applications such as Zoom, Google Meet, Cisco Webex and similar applications, online exam proctoring is still unable to run effectively. Cheating in online exams, such as using dual monitors, is very possible for exam participants. Therefore, as a future preventive measure in the online exam process, a system is needed that can accommodate this concern. This research will create an online exam supervision system with WebRTC technology which has features to accommodate real-time supervision. The System Development Life Cycle method will be used in software development with 5 main stages, namely Requirement Analysis, Design, Development, Testing, and Maintenance. Implementation of the system was carried out during the online examination process for a class at one of the universities in Surabaya. Finally, the test results show that features such as: Live Proctoring get a score of 4.5; Attention Alert gets a score of 5; Exam Lock scored 4.5; Live Alert scored 4.5; and Tab & Window Detection got a score of 4; shows that this system has succeeded in providing a solution in online exam proctoring needs.
Iterative Enhancement of Academic Information System UI/UX Through Prototype-Based and User Centered Design Methodology Vanessa Priscilia Wijaya; Mychael Maoeretz Engel
bit-Tech Vol. 8 No. 2 (2025): bit-Tech
Publisher : Komunitas Dosen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32877/bt.v8i2.3143

Abstract

The Academic Information System serves as a core platform for managing academic activities, yet despite it being a core platform there are still many institutions face the same issues related to poor user experience (UX) and user interface (UI) design, which affect the operational efficiency and user satisfaction. While many studies have explored usability improvement in academic systems, few have focused on iterative prototyping combined with user-centered design methodologies in fully deployed university platforms. The goal of this study is to address these issues by redesigning the CIS interface through an iterative, prototype-based using Design Thinking and User-Centered Design (UCD) methodologies. It’s focus on improving system clarity, navigation, and user engagement. Online questionnaires and interviews with 50 students were used to gather data for the primary evaluation, which was based on the User Experience Questionnaire (UEQ). The UEQ was used both before and after the redesign to measure six experiential dimensions: Attractiveness, Perspicuity, Efficiency, Dependability, Stimulation, and Novelty. And the results show significant improvements across all categories with rated excellent, indicating it’s successfully enhanced usability, visual appeal, and workflow clarity. These improvements has made an increased to the user satisfaction during academic task completion. Practically, the redesigned CIS enables students to access critical academic information more efficiently, improving daily academic productivity and digital interaction quality. This study highlights the effectiveness of using iterative, and user-centered methodologies in transforming outdated academic systems into intuitive, human-centered platforms that promote both institutional efficiency and user well-being.
Comparative Analysis of Performance Aspects Between Chroma and Pgvector as a Vector Database Ali Zaenal Abidin; Mychael Maoeretz Engel
bit-Tech Vol. 8 No. 2 (2025): bit-Tech
Publisher : Komunitas Dosen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32877/bt.v8i2.3198

Abstract

System architects face a critical choice between specialized vector databases like ChromaDB and general-purpose options like PostgreSQL with the PGVector extension. This decision profoundly impacts TCO and system viability, yet holistic performance data under resource constraints is scarce. We answer whether a specialized or generalized architecture provides superior operational efficiency and accuracy when resources are limited and providing an evidence based guide for navigating the trade offs between cost, speed, and accuracy. We conducted 119 tests on the Deep1M dataset within a resource-constrained 4GB RAM Docker, measuring latency, ingestion speed, storage overhead, and recall accuracy. The results reveal a stark architectural trade-off.  ChromaDB delivers highly consistent, low query latency, with only a 1.3-fold performance degradation as data scales. However, this speed comes with significant operational costs:-massive storage inefficiency averaging 395 times the raw data size and severe ingestion bottlenecks, showing a 491.7 fold slowdown. Conversely, PostgreSQL with PGVector demonstrates resource efficiency. Its storage overhead is minimal at 3-4 times the raw data size, and it provides 7.0 times better ingestion scalability. Crucially, it achieves statistically superior accuracy at production scale (≥250K vectors), delivering near-perfect 99.6-99.8% recall compared to ChromaDB's 91-95%. The trade-off is performance variability, where poorly tuned PostgreSQL queries can be up to 16.6 times slower than ChromaDB. We conclude that for dynamic production applications where TCO, scalability, and high accuracy are priorities, PGVector is more viable. ChromaDB's predictable latency is better suited for latency-critical applications with static data, but only if its high operational costs are acceptable.
PERENCANAAN DAN PENGIMPLEMENTASIAN PLATFORM MANAGEMENT OPTIMALISASI SARANA DAN PRASARANA SEKOLAH CITRA KASIH SAMARINDA Eric Harianto; Denny Bernardus; Mychael Maoeretz Engel; Ocvan Pandu Kurniawan; Vanezza Brenda Aurellia; Angeline Fiona
BUDIMAS : JURNAL PENGABDIAN MASYARAKAT Vol. 8 No. 1 (2026): BUDIMAS : Jurnal Pengabdian Masyarakat
Publisher : LPPM ITB AAS Indonesia Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29040/budimas.v8i1.19498

Abstract

Sekolah Citra Kasih Samarinda merupakan sekolah swasta di bawah naungan Yayasan Citra Berkat yang menyelenggarakan pendidikan jenjang K-12, mulai dari KB, TK, SD, SMP hingga SMA, dengan jumlah peserta didik sebanyak 598 siswa serta didukung oleh 62 guru dan tenaga kependidikan. Sarana dan prasarana sekolah memiliki peran penting dalam mendukung proses pembelajaran yang efektif, kondusif, dan sesuai dengan tuntutan pendidikan abad ke-21. Pengelolaan sarana dan prasarana yang optimal diharapkan mampu meningkatkan kualitas layanan pendidikan serta daya saing sekolah, khususnya di Kota Samarinda sebagai wilayah penyangga Ibu Kota Nusantara (IKN). Permasalahan yang dihadapi saat ini adalah belum optimalnya manajemen sarana dan prasarana, terutama dalam inventarisasi aset, pemeliharaan fasilitas, pemanfaatan ruang, dan integrasi teknologi informasi. Proses pengelolaan yang masih bersifat manual dan reaktif menyebabkan perencanaan jangka panjang, efisiensi biaya, serta pemanfaatan fasilitas belum berjalan maksimal. Kegiatan pengabdian kepada masyarakat ini bertujuan merancang manajemen optimalisasi sarana dan prasarana sekolah yang terstruktur, berbasis teknologi, dan berkelanjutan. Metode yang digunakan adalah metode partisipatif melalui lima tahapan, yaitu observasi, pengembangan program, implementasi, validasi, dan finalisasi dengan melibatkan dosen dan mahasiswa dalam kerangka Merdeka Belajar Kampus Merdeka (MBKM). Hasil kegiatan diharapkan dapat meningkatkan efisiensi pengelolaan fasilitas, memperbaiki sistem pemeliharaan sekolah, serta meningkatkan kapasitas guru dan staf administrasi dalam pengelolaan sarana prasarana berbasis digital berbentuk platform. Dengan demikian, kegiatan ini berkontribusi pada peningkatan kualitas fasilitas layanan pendidikan di sekolah dan dapat menjadi model bagi sekolah K-12 lainnya.
Duet: A Mobile Application to Facilitate Parents in Practicing Coparenting Jessica Christina Widhigdo; Jenny Lukito Setiawan; Mychael Maoeretz Engel; Lisa Indriati
Jurnal Edutech Undiksha Vol. 12 No. 1 (2024): June
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jeu.v12i1.70706

Abstract

Increasing achievement motivation in children, parents need tools to educate them about co-parenting and how to develop achievement motivation in children. Parents also need a means to discuss their parenting patterns and monitor their children. This research aims to develop a coparenting-based mobile application. This type of research is development research that follows the ADDIE development model. The data collection method uses a questionnaire. The data collection instrument uses a questionnaire sheet. The validation sheet is filled in by psychology, technology, and design experts. 92 parents of elementary school students also tested this application in grades 4-6. The data analysis technique uses qualitative and quantitative descriptive analysis. The results of the research, namely expert validation, show that the Duet application has content that is very suitable and useful for helping parents improve co-parenting in order to develop children's achievement motivation (96.30%), is very technologically reliable (83.20%), and has very good design effectiveness (93.33% ). The results of trials on parents showed that this application was very well accepted by parents (81.09%). It was concluded that DUET, a co-parenting-based mobile application, can be used as a tool for parents to develop co-parenting to increase children's achievement motivation. The implication of this research is that the coparenting-based mobile application developed can be used by teachers and parents to improve children's achievement.
Co-Authors Agustinus, Jeems Terri Ali Zaenal Abidin Amanda Teonata Angeline Fiona Daniel Martomanggolo Wonohadidjojo Denny Bernardus Eric Harianto Evan Joshua Evan Tanuwijaya Fernando, Louis Hermanto, Richie Reuben Jenny Lukito Setiawan Jenny Lukito Setiawan Jessica Christina Widhigdo Jessica Christina Widhigdo Joshua, Evan La Ode Arsad Sani Laura Mahendratta Tjahjono Lestari, Caecilia Citra Lisa Indriati Lisa Indriati Lordianto, Reinaldo Lewis Natanael Geraldo Santoso Nugroho, Agus Cahyo Nur Azizah Ocvan Pandu Kurniawan Setiawan, Averill Saladin Atma Theresia Ratih Dewi Saputri Tony Antonio Vanessa Priscilia Wijaya Vanezza Brenda Aurellia Ventje Jeremias Lewi Engel Ventje Jeremias Lewi Engel Yuwono Marta Dinata Zenjaya, Kennan Trevyn