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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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Smart Keyless Locker Design Using Face Recognition Technology Based on the Internet of Things Jakarta Global University Classroom Arizki Rahman; Legenda Prameswono Pratama; Hamzah; Brainvendra Widi Dianova; Arisa Olivia Putri; Sinka Wilyanti; Safa N Saud
Journal of Global Engineering Research and Science Vol. 4 No. 2 (2025): Vol. 4 No. 2 (December 2025): Journal of Global Engineering Research & Science
Publisher : Jakarta Global University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/j-gers.v4i2.162

Abstract

This research presents the design and implementation of an Internet of Things (IoT)-based Smart Keyless Locker integrated with face recognition technology to enhance security and efficiency in classroom locker management at Jakarta Global University. The system replaces conventional mechanical keys with biometric authentication to minimize risks associated with key loss, duplication, and unauthorized access. The hardware architecture consists of a Raspberry Pi as the primary processing unit for facial recognition, an Arduino Mega for actuator control, a camera module for image acquisition, solenoid door locks as locking mechanisms, load cell sensors for locker status detection, and an IoT-based notification system integrated with WhatsApp for real-time monitoring. The facial recognition process utilizes the Haar Cascade Classifier for face detection and the Local Binary Patterns Histograms (LBPH) algorithm for feature extraction and matching. System performance was evaluated under various conditions, including differences in lighting intensity, facial orientation, distance, and face coverings. Experimental results indicate that the system achieved a recognition success rate of 50% under the tested conditions, particularly within a distance range of 40–70 cm and adequate lighting. The average verification time ranged from 1.4 to 2.1 seconds depending on facial angle, while the WhatsApp notification system demonstrated reliable message delivery with an average delay of 4.75 seconds. Although recognition performance decreases when facial features are partially obstructed or when lighting is insufficient, the proposed system demonstrates the feasibility of integrating biometric authentication with IoT technology for modern classroom locker management applications.
Sensitivity Analysis of a Single-Server Fuel Queue System Using the M/M/1 Model: A Case Study of a Pertamini Station Sinta Restuasih; Eko Widodo Gustany; Fitri Retna Wijayanti; Ananda Putri Ariyani; Nur Maulida Fitria
Journal of Global Engineering Research and Science Vol. 4 No. 2 (2025): Vol. 4 No. 2 (December 2025): Journal of Global Engineering Research & Science
Publisher : Jakarta Global University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/j-gers.v4i2.181

Abstract

The rapid growth of motorcycle ownership in Indonesia has significantly increased the demand for fuel, particularly for daily transportation activities. This condition has encouraged the development of micro-scale refueling services, commonly known as Pertamini, which provide easier and more accessible fuel services for local communities. However, Pertamini stations generally operate with limited facilities and a single service channel, which may lead to queue formation, especially during peak hours. Long waiting times can reduce service efficiency and customer satisfaction, making queue system evaluation essential to support operational improvements. Therefore, this study aims to analyze the performance of the Pertamini service queue system using the M/M/1 queue model. This research applies a quantitative approach through direct field observation to collect data on customer arrival rates and fuel service times during a specified observation period. The collected data are used to determine the arrival rate (λ) and service rate (μ) as the main parameters in modeling the queue system. System stability is evaluated by comparing these parameters to ensure that service capacity can accommodate customer demand. Several performance indicators are analyzed, including system utilization, the average number of customers in the queue and in the system, and the average waiting time experienced by customers. The results indicate that under normal operational conditions, the queue system operates in a stable condition where the service rate exceeds the arrival rate. However, sensitivity analysis shows that an increase in arrival rate or a decrease in service rate significantly increases waiting time. Therefore, improving service efficiency is necessary to maintain system stability and reduce customer waiting time.
Technical Study of the Implementation Method for Lightweight Brick Wall Construction: Analysis of Cost, Time, and Quality in Building Construction Projects Mutia Ramadhany; Aulia Choiri Windari
Journal of Global Engineering Research and Science Vol. 5 No. 1 (2026): Vol. 5 No. 1 (June 2026): 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.v5i1.154

Abstract

The construction of lightweight masonry walls plays a crucial role in supporting building stability, aesthetics, and comfort. This study aims to analyze the implementation methods of lightweight masonry walls in terms of cost, time, and quality in the Sky House Alam Sutera project. The research uses a descriptive-analytical approach with case study and literature review, involving field observation, interviews, technical documentation, and analysis of the project Budget Plan (BoQ) and technical standards. The results indicate that the material requirements per floor include 84,000 lightweight bricks, 60 sacks of cement, and 36 m³ of sand, with an estimated total cost of approximately IDR 260 million, including labor and overhead. The deployment of five parallel work teams allows wall installation per floor to be completed in about 28 days, including finishing, quality inspection, and curing. The use of thin bed mortar increases installation efficiency while maintaining proper thickness and alignment. Consistent quality control through visual inspection, compressive testing, and daily documentation ensures compliance with technical standards. The study emphasizes careful planning, labor coordination, and strict quality supervision to achieve efficiency in cost, time, and quality in multi-story building projects.
Design of Incubator System for Laboratory: Development, Implementation, and Performance Evaluation Ade Firdaus; Suci Imani Putri; Sinta Restuasih; Rino Ferdian Surakusumah; Muhammad Miftah El Huda
Journal of Global Engineering Research and Science Vol. 5 No. 1 (2026): Vol. 5 No. 1 (June 2026): 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.v5i1.194

Abstract

Laboratory incubators play a pivotal role in microbiology research by facilitating the incubation and propagation of microorganisms. However, conventional incubators are often limited to specific sample containers and models, necessitating the use of multiple units for different applications. In response to this challenge, this study presents the development of a multifunctional digital incubator using acrylic materials and digital temperature control. The aim was to create an incubator capable of accommodating various sample containers, including tubes and microplates, within a single unit. The designed incubator features dimensions of 40cm x 40cm x 40cm, with the capacity to hold one rack of 48 tubes (measuring 27x9.5x8cm) and four microplates. It consumes 350VA of power and utilizes a BR6 temperature control system to maintain a precise temperature of 37±1°C. Performance testing revealed temperature variations of only 0.1°C (0.21%) within the permissible range of ±1°C, while timer accuracy was demonstrated at 100%. Measurements were conducted using a thermohygrometer and stopwatch. The developed multifunctional digital incubator meets the intended objectives, offering researchers a versatile and reliable tool for various laboratory applications, including ELISA assays and clinical chemistry experiments.
Effectiveness Analysis of Organic and Inorganic Waste Combustion in a Household Incinerator Lintang Surya Panuju; Adhes Gamayel; Mohamad Zaenudin
Journal of Global Engineering Research and Science Vol. 5 No. 1 (2026): Vol. 5 No. 1 (June 2026): 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.v5i1.196

Abstract

Waste burning is commonly practiced by communities in open areas, particularly within residential environments, often resulting in inefficient combustion and potential environmental impacts. This study aims to evaluate the combustibility of different types of household waste under open burning conditions and compare it with the performance of a proposed small-scale incinerator. The investigated waste types include wet leaf litter, dry leaf litter, food waste, plastic waste, and mixed waste, with variations in mass from 250 g, 500 g, and 750 g. Key parameters observed include combustion temperature, combustion duration, and burning behavior. The results indicate that moisture content and material composition significantly influence combustion performance. Wet leaf litter and food waste were classified as non-combustible under open burning conditions due to their high moisture content, which inhibits ignition. In contrast, dry leaf litter and plastic waste demonstrated good combustibility, achieving higher temperatures and longer combustion durations. Mixed waste exhibited moderate and inconsistent combustion characteristics due to its heterogeneous composition. In comparison, the proposed small-scale incinerator demonstrated superior performance, achieving a maximum temperature of 432°C and maintaining an operating temperature of approximately 421°C. Additionally, increasing the mass of waste generally led to longer combustion durations and, in some cases, higher temperatures. Overall, the findings highlight that open burning is less efficient for wet and mixed waste and may contribute to incomplete combustion and pollutant emissions. Therefore, pre-treatment methods such as drying and sorting, as well as the use of controlled combustion systems like incinerators, are recommended to improve combustion efficiency and reduce environmental impacts.
Dynamic Interaction of Bridge Spans and Piers as a Tuned System for Seismic Load Reduction Ziyovuddin Rahimjonov; Fakhriddin Zokirov; Lintang Dian Artanti
Journal of Global Engineering Research and Science Vol. 5 No. 1 (2026): Vol. 5 No. 1 (June 2026): 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.v5i1.200

Abstract

Bridges located in seismic regions are subjected to significant dynamic loads that may cause considerable forces in bridge piers and foundations. Traditional seismic design methods usually consider the span structure as a rigid mass transferring inertial forces to the supports. However, this approach does not account for the potential dynamic interaction between the span and the supporting structure. This study proposes a method for reducing seismic forces in bridge piers by using the span structure as a tuned dynamic system. In the proposed approach, the bridge span is considered as a dynamic vibration absorber interacting with the pier. A mathematical model based on a two-degree-of-freedom system is developed to describe the dynamic behavior of the bridge–pier system under seismic excitation. Parametric analysis is carried out to determine the optimal stiffness and damping parameters that minimize seismic forces in the pier. The results show that appropriate tuning of the span structure significantly reduces dynamic responses. In particular, the bending moment in the bridge pier can be reduced by up to 2.3 times compared with traditional seismic design approaches. The proposed method can be applied in seismic regions for improving the seismic performance and reliability of bridge structures.
IoT-Based Locker Lock Security Using YOLO Facial Recognition Legenda Prameswono Pratama; Sinka Wilyanti; Naufal Eka Putra
Journal of Global Engineering Research and Science Vol. 5 No. 1 (2026): Vol. 5 No. 1 (June 2026): 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.v5i1.201

Abstract

The increasing demand for secure and intelligent storage systems has encouraged the development of biometric-based authentication technologies. This study presents the design and implementation of a smart locker security system based on facial recognition using the YOLO (You Only Look Once) algorithm integrated with an ESP32-CAM module and IoT communication. The system was developed to provide automated user authentication and remote locker control through real-time face detection and recognition. Performance evaluation was conducted by analyzing face detection accuracy, authentication response time, and network communication quality under different distances and lighting conditions. Experimental results showed that the YOLO-based system achieved a a face detection success rate of up to 92% under both bright-light and low-light environments at distances of 30 cm and 100 cm. The detection error ranged from 2.60% to 4.30%, indicating stable and reliable detection performance. Authentication testing revealed that the system performed optimally at 30 cm, with response times ranging from 1.47 s to 2.56 s and error rates below 1.2%. At 100 cm, the response time increased to approximately 9–10 s, accompanied by higher error rates due to reduced facial feature visibility. In addition, network performance evaluation based on latency, packet loss, and throughput demonstrated reliable Wi-Fi communication between the ESP32-CAM and the server, ensuring smooth data transmission during authentication and locker control operations. The results confirm that the YOLO algorithm is effective for real-time facial recognition applications and can be successfully implemented in smart locker security systems. The proposed system provides accurate authentication, reliable communication, and enhanced security, making it suitable for practical access-control applications.
Evaluation of Static Methods for Predicting Axial Bearing Capacity of Minipiles Using PDA Test Results Puspa Ningrum; Fadli Azzuhri
Journal of Global Engineering Research and Science Vol. 5 No. 1 (2026): Vol. 5 No. 1 (June 2026): 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.v5i1.216

Abstract

Accurate prediction of the axial bearing capacity of pile foundations is essential for ensuring structural safety and optimizing foundation design. Although static prediction methods based on Cone Penetration Test (CPT) data are widely used because of their simplicity and cost-effectiveness, their predictive accuracy varies depending on the adopted analytical approach. This study evaluates the performance of three commonly used static methods (Meyerhof, Schmertmann, and Terzaghi) in predicting the axial bearing capacity of precast concrete minipiles using Pile Driving Analyzer (PDA) test results as the field reference. The analysis was conducted using CPT data collected from six sounding locations at a two-story residential building project in Pekanbaru, Indonesia. The predicted bearing capacities obtained from each method were compared with the ultimate capacity derived from PDA and CAPWAP analyses using absolute and relative differences as evaluation indicators. The results show that all three static methods overestimated the measured pile capacity, although the magnitude of deviation varied considerably. The Schmertmann method produced the highest average predicted capacity (50.35 tons), followed by the Meyerhof method (37.08 tons), while the Terzaghi method yielded the lowest prediction (33.54 tons). Compared with the PDA-derived ultimate capacity of 30.10 tons, the Terzaghi method exhibited the smallest relative difference (11.43%), indicating the closest agreement with field measurements. CAPWAP analysis further revealed that approximately 90.7% of the pile capacity was mobilized through shaft resistance, confirming the predominance of frictional load transfer at the study site. These findings demonstrate that the Terzaghi method provides the most representative prediction of minipile axial bearing capacity under the investigated soil conditions and may serve as a practical alternative for preliminary foundation design when field load testing is unavailable.
Analysis of the Effect of Aggregate Gradation Size (0.2 – 2cm) on the Compressive Strength of Porous Concrete for Parking Applications Dilla Natasya Amelia; Dedy Rutama; Lintang Dian Artanti
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.v4i1.118

Abstract

Many parking lots are not well designed, so they often experience waterlogging due to rain, which disrupts user comfort and causes damage to infrastructure. Porous concrete is one of the new innovations being developed. This study uses various aggregate gradations to evaluate the mechanical characteristics and physical properties of porous concrete with a design compressive strength of K-150 kg/cm2. This study aims to analyze the effect of aggregate gradation with a size of 0.2 cm to 1.2 cm on the compressive strength and porosity of porous concrete used in parking lot applications. The research method applies an experimental approach in the laboratory, with compressive strength testing referring to ASTM C39 and concrete porosity referring to ASTM C192-2012. The results show that aggregate gradation of 0.2 cm - 0.7 cm has a greater average compressive strength at the age of 28 days, namely 90.19 kg/cm2 but the porosity value is smaller, namely 24.29%. Aggregates with an aggregate gradation of 0.7 cm - 1.2 cm showed an average compressive strength value of 85.06 kg/cm2 and a porosity value of 28.7% while aggregate gradations with a size of 1cm - 2 cm showed a small average compressive strength value at the age of 28 days of 80.01 kg/cm2 but the porosity value obtained was higher at 30.5%. In this test, the compressive strength at the age of 28 days with an aggregate gradation of porous concrete of 0.2 cm - 0.7 cm still meets the SNI 03-0691-2022 standard for Class B qualification (parking lot)
Layout Design Plan for PT. Golden Sweet Bakery Bread Factory Sinta Restuasih; Ayu Nurul Haryudiniarti; Jihan Atikah Septiani
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.v4i1.123

Abstract

Designing an effective factory facility layout is an important first step in establishing a manufacturing industry, including a bakery. This study aims to design the layout of PT. Golden Sweet Bakery's production facilities from scratch, starting from needs analysis, designing the production process flow, to preparing the facility layout. The design process begins with identifying space requirements based on the planned production capacity, the types of products produced, and the equipment to be used. The next stage involves analyzing the workflow to ensure efficient material flow and minimize movement. The layout is designed based on the principles of separating clean and dirty ranges, grouping similar workstations, and optimizing space use. The design results show that the designed layout can create an efficient production flow, with minimal material movement distance and optimal production cycle time. This design also considers flexibility for future expansion. With a design approach from the beginning, this design is expected to be a strong foundation for PT. Golden Sweet Bakery's operations in meeting market needs effectively. Factory layout problems are problems that cannot be avoided by companies in all their operational activities. The long distance of material movement from one department to another will affect the company's ability to increase productivity and profitability. With a high total material movement per year, material handling costs will also increase. This study aims to determine the minimum total material movement to obtain the best final layout and minimize material handling costs.

Page 5 of 6 | Total Record : 53

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