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Journal of Global Engineering Research & Science (J-GERS)
Published by Universitas Global Jakarta
ISSN : 28305906     EISSN : 28305814     DOI : https://doi.org/10.56904
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Environmental Science
Journal of Global Engineering Research & Science (J-GERS) is a peer-reviewed journal covering all areas of science, engineering, and technology. It is published 2 Issues (twice-yearsly) by the Faculty of Engineering and Computer Science (FECS) of Jakarta Global University. The scope of the journal includes the following areas of research: - Informatics Engineering - Electrical Engineering - Civil Engineering - Industrial Engineering - Mechanical Engineering Manuscripts should be written in English and be submitted either online at https://journal.jgu.ac.id/index.php/jgers Informatics Engineering: 1. Computer network design 2. Internet of Things 3. IT management and governance 4. IT-business strategic alignment 5. Multimedia 6. Network security 7. Software Engineering 8. Information Technology 9. Artificial Intelligence 10. Mobile Programming 11. Geographic Information System Electrical Engineering: 1. Microelectronic System 2. VLSI Design 3. Biomedical Instrument 4. Embedded System 5. Robotic 6. Communication Electronic 7. Modulation and Signal Processing 8. Wireless and Mobile Communication 9. Radio Communication 10. Network 11. Electronic Circuits and System 12. Biomedical Sciences and Engineering 13. Power Electronics Civil Engineering: 1. Structural Engineering, 2. Construction Engineering & Management 3. Geotechnical Engineering, 4. Water Resources Engineering, 5. Transportation Engineering 6. Environment Industrial Engineering: 1. Production System 2. Supply Chain Management 3. Ergonomics 4. Industrial Management 5. Project management 6. Engineering and Quality Control Mechanical Engineering: 1. Energy convertion 2. Material 3. Mechanical Design 4. Manufacturing and automation 5. Sustainable Energy 6. Automotive
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 53 Documents
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Home Security System Based on Raspberry Pi and PIR Sensor Using WhatsApp Messenger Patrick Kristo Prayogo; Legenda Prameswono Pratama; Devan Junesco
Journal of Global Engineering Research and Science Vol. 4 No. 1 (2025): Vol. 4 No. 1 (June 2025): Journal of Global Engineering Research & Science (J-G
Publisher : Jakarta Global University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/j-gers.v4i1.134

Abstract

Home security is a crucial factor for everyone to protect property and ensure the safety of their family. Along with technological advancements, home security systems have evolved from simple mechanisms to sophisticated devices integrated with the Internet of Things (IoT). One of the widely used technologies in such systems is the Raspberry Pi, a small, affordable, and flexible computer capable of controlling other devices through its General Purpose Input/Output (GPIO) pins. The Passive Infrared (PIR) sensor also plays a vital role in home security systems due to its ability to detect human movement by sensing changes in infrared radiation emitted by the human body. By utilizing PIR sensors, security systems can detect motion inside or around the house, potentially indicating threats such as burglary attempts. In addition, fast and efficient communication is essential in security systems. WhatsApp Messenger, as one of the most popular instant messaging applications, offers convenience in sending alerts or notifications directly to the user’s device. The integration of Raspberry Pi, PIR sensors, and WhatsApp Messenger can create a home security system that is not only cost- effective but also capable of delivering real-time notifications to homeowners. By combining Raspberry Pi and PIR sensors with WhatsApp as a communication medium, the system offers advantages in cost, ease of installation, and efficiency in delivering alerts without requiring additional complex hardware. Therefore, this research aims to design and implement a Raspberry Pi and PIR sensor-based home security system with notifications sent via WhatsApp Messenger.
Company Profile Website Development With 360 Interactive Product Features To Improve User Experience On Medical Devices Muhammad Hafidz; Halimatuz Zuhriyah; Anindya A Hapsari
Journal of Global Engineering Research and Science Vol. 4 No. 1 (2025): Vol. 4 No. 1 (June 2025): Journal of Global Engineering Research & Science (J-G
Publisher : Jakarta Global University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/j-gers.v4i1.137

Abstract

This research developed an interactive Company Profile Website for DM Medical Alkes to address the lack of digital promotion and corporate credibility. The website integrates an interactive 360° product presentation feature to enhance user experience and buyer confidence. The Agile Development method was employed, which included planning, design (UML, mockups), implementation (Next.js, Supabase), testing, and review phases. An experiment to determine the optimal number of images for the 360° feature was conducted with internal stakeholders, resulting in the use of 36 images. Comprehensive system testing was performed using Black Box Testing, which confirmed that all basic website functionalities operated optimally. User Experience (UX) Testing with the System Usability Scale (SUS) yielded an average score of 80.85 from 41 customers (categorized as "Excellent") and 98.66 from 3 stakeholders (categorized as "Best Imaginable"). Furthermore, a focused questionnaire on the interactive 360° feature showed very positive results, with an average score of 4.0 and a percentage of 80% from 41 respondents (categorized as "Very Good"). These findings prove that respondents prefer the 360° feature over two-dimensional media or videos, and that the feature is effective in enhancing user experience and attracting potential buyers. Overall, the developed website successfully presents information and products effectively, significantly improving user experience and meeting expectations.
Effects of Soybean and Olive Oil Additives on the Physical and Frictional Properties of Synthetic 5W/30 Oil Fachri Musakhi; Adhes Gamayel
Journal of Global Engineering Research and Science Vol. 4 No. 1 (2025): Vol. 4 No. 1 (June 2025): Journal of Global Engineering Research & Science (J-G
Publisher : Jakarta Global University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/j-gers.v4i1.159

Abstract

The growing demand for environmentally friendly lubricants has encouraged the development of bio-based additives derived from vegetable oils. This study investigates the effects of blending soybean oil and olive oil with SAE 5W/30 synthetic lubricant on physical properties and tribological performance. Lubricant blends were prepared with varying volume fractions of soybean oil and olive oil (0, 20, 40, 60, and 100%). Density and kinematic viscosity were measured at room temperature to evaluate changes in physical properties. Tribological behavior was examined using a pin-on-disc friction test under controlled conditions, including a constant rotational speed of 450 rpm, a normal load of 2 kg, and a test duration of 3 minutes. Friction temperature was recorded during testing, and wear surface morphology was analyzed using optical microscopy. The results indicate that increasing vegetable oil content influences density and viscosity, reflecting modifications in lubricant film characteristics. Blended lubricants generally exhibited lower friction temperatures compared to pure synthetic oil, indicating improved lubricity and heat dissipation. Surface morphology observations revealed smoother worn surfaces and reduced wear severity for blended oils, particularly those containing balanced proportions of soybean and olive oil. These improvements are attributed to the polar functional groups in vegetable oils, which enhance adsorption and film formation at the contact interface. Overall, the findings demonstrate that soybean and olive oil blends can effectively improve the tribological performance of SAE 5W/30 synthetic lubricant, highlighting their potential as sustainable and eco-friendly lubricant additives for mechanical applications.

Page 6 of 6 | Total Record : 53

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