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Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer
Published by Asosiasi Riset Teknik Elektro Dan Informatika Indonesia
ISSN : 30318750     EISSN : 30318742     DOI : 10.61132
Core Subject : Science,
Computer Science & IT
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer memuat naskah hasil-hasil penelitian di bidang Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 213 Documents
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Kajian Motor Tak Serempak Tiga Phasa sebagai Generator Satu Phasa dalam Penerapan Teknologi Efisiensi Energi Pelpinus Sinay
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 4 (2025): Agustus : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i4.1023

Abstract

Asynchronous motors, commonly known as induction motors, are widely utilized due to their robustness, reliability, and efficiency in both industrial and household applications. These motors typically operate by converting electrical energy into mechanical energy through the interaction between a rotating magnetic field and the rotor. Under normal operating conditions, the rotor speed is always slightly less than the speed of the magnetic field, which is known as "slip." However, when the slip becomes negative, meaning that the rotor speed exceeds the speed of the rotating magnetic field, the motor begins to function as a generator. This condition occurs when the motor is driven above its synchronous speed by an external mechanical force, causing the rotor to generate electrical power. Using an asynchronous motor as a generator offers several notable advantages. One of the key benefits is its ability to produce a pure sine wave voltage, which is crucial for various applications that require stable and high-quality electrical power. Since these motors do not use brushes, they are free from the problems associated with brush wear and maintenance. Moreover, they do not generate radio frequency interference (RFI), making them suitable for environments sensitive to electromagnetic disturbances. The use of an asynchronous motor as a generator also provides the ability to function as a rotary phase converter. This is especially beneficial in applications where three-phase power is unavailable, but the load requires it. To facilitate this process, a capacitive voltage is required to induce excitation in the rotor. The capacitive current is supplied by an additional capacitor, which is installed in parallel with the motor output. This capacitor helps maintain the necessary phase shift and enables the motor to generate the required three-phase power.
Faktor-Faktor yang Mempengaruhi Motivasi Belajar pada Mata Pelajaran Teknik Bubut Kelas XI Jurusan Teknik Pemesinan di SMK Negeri 1 Padang Aldo Ramadhana; Refdinal Refdinal; Purwantono Purwantono; Randi Purnama Putra
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 4 (2025): Agustus : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i4.1024

Abstract

This study aims to analyze the factors that influence students' learning motivation in the Lathe Engineering subject in class XI of the Department of Machining Engineering at SMK Negeri 1 Padang. Several variables studied include learning interest, ideals, friendship environment, and family environment, each of which acts as an independent variable, while learning motivation functions as a dependent variable. The method used in this study is quantitative with a correlational approach, where the research sample consisted of 51 students selected using a saturated sampling technique, namely sampling that covers the entire population in the class. The instrument used in this study was a questionnaire with a Likert scale that has been tested for validity and reliability to ensure that the measuring instrument used is able to extract accurate and consistent data. The data obtained were then analyzed using multiple linear regression techniques with the help of SPSS version 26 to determine the effect of each variable on student learning motivation. The results of the study indicate that partially, learning interest and friendship environment have a significant influence on student learning motivation. Students who have a high interest in the Lathe Engineering subject tend to have better learning motivation, and positive relationships with their friends also increase their enthusiasm for learning. In contrast, the variables of ideals and family environment did not show a significant influence on students' learning motivation in the context of this study. Although ideals and family support are often considered important factors in education, the results of this study indicate that external factors such as friendships are more dominant in influencing students' learning motivation. Simultaneously, all four variables significantly influenced students' learning motivation, with the friendship environment being the most dominant factor.
Implementasi Metode Rapid Application Development (RAD) Dalam Pembangunan Sistem Pengajuan KreditBerbasis Progressive Web App Fredian Septa Nugroho; Umi Rosyidah
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 4 (2025): Agustus : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i4.1027

Abstract

The manual credit application process often takes a long time and is prone to various problems, such as recording errors, data redundancy, and the risk of losing important documents. These conditions not only hamper service effectiveness but can also reduce customer satisfaction and the performance of the officers involved. Therefore, this study aims to design and develop a Progressive Web App (PWA)-based credit application system using the Rapid Application Development (RAD) method. This system is expected to be a more efficient, faster, and more accurate solution than the current manual mechanism. PWA was selected based on its ability to provide universal access through a browser without the need for additional application installation, making it more practical for both customers and officers. Meanwhile, the RAD approach allows for an iterative and flexible system development process, with direct user involvement from the design stage through implementation. This aims to ensure the system is truly aligned with real-world needs. The development results indicate that the designed PWA system is capable of supporting the tasks of Account Officers (AO) and Division Heads in managing credit application data. The process includes the pipeline stage, submission, field survey, and credit realization, which is well-documented and accessible in real time. Functional testing using the Black Box Testing method proved that all features functioned according to established specifications. Furthermore, usability testing using the System Usability Scale (SUS) method yielded satisfactory scores, indicating the system's high usability and positive user experience. Therefore, this PWA-based credit application system not only improves process effectiveness and efficiency but also supports transparency, data accuracy, and user satisfaction.
Penerapan Algoritma C4.5 dengan Teknik Resample untuk Prediksi Kinerja Pegawai PT X Wahyu Saputro
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 4 (2025): Agustus : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i4.1049

Abstract

Human Resource Management (HRM) plays a strategic role in improving organizational competitiveness through proper management of employee placement, training, and performance evaluation. To support the achievement of these goals, a predictive model is needed that can provide an accurate picture of employee performance. This study utilizes a Human Resource Management (HRM) dataset of 1,200 data and applies several classification algorithms to compare their effectiveness, namely J48 or C4.5, Random Forest, Naive Bayes, K-Nearest Neighbor (KNN), Logistic Regression, and Support Vector Machine (SVM). To obtain more optimal results, this study uses resampling techniques and attribute selection methods with a correlation attribute eval approach, so that class distribution can be more balanced and model accuracy increases. From the test results, the Decision Tree J48 algorithm showed the best performance with an accuracy level reaching 95.41%, a kappa value of 0.8925, a mean absolute error (MAE) of 0.0432, a precision of 0.955, a recall of 0.954, and an area under the ROC curve of 0.964. These findings indicate that J48 has excellent predictive capabilities compared to other algorithms. Furthermore, this study also found that the most influential variables in determining employee performance include the percentage of the last salary increase (EmpLast Salary Hike Percent), the level of work environment satisfaction (Emp Environment Satisfaction), the length of time since the last promotion (Years Since Last Promotion), and experience in the current role (Experience Years in Current Role). Overall, the results of the study indicate that the C4.5 algorithm with the application of the resampling technique can be an optimal solution in building an employee performance prediction system. Thus, this model has the potential to be a strong basis for managerial decision-making, particularly in designing HR development strategies and policies to improve organizational performance.
Rancang Bangun Aplikasi Integrated Cavalry Monitoring and Maintenance System (ICMMS) Berbasis Life Cycle Cost pada Kendaraan Tempur Non-Aviation Teddy Hendra
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 5 (2025): Oktober: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i5.1053

Abstract

The maintenance of non-aviation defense equipment (main weapon system) is a critical aspect in maintaining operational readiness. However, the Maintenance, Repair, and Overhaul (MRO) system in Indonesia still faces limitations due to manual reporting, inefficiency in spare parts management, and the lack of integration of the Life Cycle Cost (LCC) approach. This study aims to design and develop the Integrated Cavalry Monitoring and Maintenance System (ICMMS) based on a web application that integrates sensors, real-time data analytics, and LCC calculation. The prototyping method was used, involving design, development, integration, and testing phases on the Maung Tactical Vehicle and Anoa Armoured Personnel Carrier at PT Pindad. The results of the prototype implementation showed a significant increase in maintenance efficiency: damage reporting time decreased from ±3 hours to ±1 minute, critical component identification became 95% faster, and maintenance scheduling shifted from reactive to predictive. Additionally, the integration of the LCC algorithm allows for more accurate maintenance cost estimation, supporting technical and strategic decision-making. This study demonstrates that ICMMS based on LCC can be an innovative digital solution to enhance MRO effectiveness and operational readiness of non-aviation defense vehicles in Indonesia. It is expected that this system will improve the resilience and cost-effectiveness of managing Indonesia’s military vehicle fleet.
Sistem Informasi Layanan Kegiatan Anggota Pemberdayaan Kesejahteraan Keluarga (PKK) Alfonsa Maria Bili; Adelbertus Umbu Janga; Mitra Permata Ayu
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 5 (2025): Oktober: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i5.1091

Abstract

The Family Welfare Empowerment (PKK) is a community organization that plays a strategic role in improving the quality of family life through various programs covering education, health, economy, and social aspects. However, in practice, the recording and management of member data as well as PKK activities are still carried out manually. This condition creates several challenges, including difficulties in archiving, limited access to information retrieval, and delays in preparing reports required by administrators and stakeholders. This study aims to design and develop a web-based information system for PKK member activity services that can manage member data, record activities, track attendance, and generate reports quickly, accurately, and efficiently. The system development method employed an object-oriented approach, consisting of requirement analysis, system design, implementation, and testing stages. The implementation results show that the developed information system can improve organizational service efficiency, assist administrators in monitoring member activeness, and reduce potential errors in data recording. Furthermore, the system provides better support for data-driven decision-making, thereby enabling PKK to become more modern, transparent, and adaptive to technological developments. Thus, this system has the potential to serve as an innovative solution to sustainably enhance the performance of PKK organizations.  
Implementasi IT dalam Pembelajaran Siswa Kelas VII SMP Katolik St. Aloysius Mersiana Delu Ngara; Vinsensius Aprila Kore Dima; Sihang Gregorius Balimema
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 5 (2025): Oktober: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i5.1093

Abstract

The development of information technology (IT) has made a significant contribution to the field of education, including at the junior high school level. This study aims to examine the implementation of information technology in the learning process of seventh-grade students at SMP Katolik St. Aloysius. The research method applied was descriptive qualitative, employing observation, teacher interviews, and student questionnaires. The findings indicate that the use of IT tools such as computers, LCD projectors, and online learning applications, particularly Google Classroom and WhatsApp Groups, has enhanced student learning motivation, facilitated easier access to learning materials, and strengthened interaction between teachers and students. Moreover, technology integration enables teachers to deliver more engaging and varied learning experiences, encouraging students to participate more actively in the classroom. Nevertheless, several challenges were identified, including limited school infrastructure, varying levels of digital literacy among students, and unequal internet access. These obstacles may hinder the effectiveness of IT implementation in the learning process. Therefore, continuous mentoring strategies, infrastructure improvement, and digital literacy training for both students and teachers are necessary. In conclusion, the implementation of information technology at SMP Katolik St. Aloysius has had a significant positive impact on the learning process but requires sustainable support and improvements to achieve optimal outcomes
Penerapan Sistem Rekomendasi Produk pada Marketplace Menggunakan Metode Colaborative Filtering Petrus J. Darus; Vinsensius Aprila Kore Dima; Lidia Lali Momo
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 5 (2025): Oktober: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i5.1094

Abstract

The rapid development of digital technology has significantly transformed commercial activities, particularly through the emergence of marketplaces as platforms for online transactions. The vast number of products available in a marketplace often creates difficulties for users in finding items that suit their needs and preferences. To address this challenge, a recommendation system is required to provide personalized and relevant product suggestions. This study discusses the implementation of a product recommendation system in a marketplace using the Collaborative Filtering method. This method works by leveraging information from users’ previous behavior, such as purchase history, ratings, and similarity of preferences with other users, to generate more accurate product recommendations. The Collaborative Filtering approach has proven effective in identifying user preference patterns based on relationships between users as well as between items. This study employs user interaction data such as ratings and shopping activities as the processing foundation. The process involves data collection, preprocessing, calculation of similarity between users or products, and generating recommendation lists. The results indicate that this method enhances the shopping experience by providing relevant product suggestions tailored to user interests, thereby increasing customer satisfaction and potentially improving sales performance in the marketplace. Thus, the application of a Collaborative Filtering-based recommendation system not only simplifies product discovery for users but also offers strategic advantages for marketplace operators in digital business competition
Pengembangan Instrumen Uji Perlambatan Kendaraan Berdasarkan Gerak Lurus Berubah Beraturan pada Metode Road Test Wibowo, Muhammad Riski Septiana; Hakim, M. Iman Nur; Shofiah, Siti; Risqi, Muhammad Isro; Firdaus, Denisya Haddad
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 5 (2025): Oktober: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i5.981

Abstract

The braking system was a crucial component in ensuring the safety of motor vehicles on the road. Brake failures, such as brake fade or total malfunction, could result in fatal accidents. Therefore, an accurate and realistic testing method was necessary to measure the effectiveness of a vehicle’s braking system. This study aimed to develop a deceleration measuring device based on GPS, which could be used in road test methods. The device was designed using an ESP32 microcontroller combined with a BN-220 GPS module, RTC real-time clock sensor, 16x2 LCD, thermal printer, and microSD storage media. Testing was conducted on a Mitsubishi L300 vehicle at the Depok Beach runway in Yogyakarta, with initial speed variations ranging from 10 to 80 km/h. Calibration results showed that the device had an accuracy of 99.64% with an average error of 0.36%. Meanwhile, the test results recorded deceleration values ranging from 0.74 to 3.26 m/s², depending on the initial speed and braking conditions. Based on these findings, the developed device proved to be accurate and feasible as an alternative method for field testing of braking systems.
Analisis Tingkat Kepuasan Pengguna Aplikasi Employee Self Service di PT Indofood CBP Sukses Makmur Tbk Menggunakan Metode End User Computing Satisfaction Yoga Wahyu Pratama; Fransiska Prihatini; Orissa Octaria; Ahmad Farisi; Mardiani Mardiani
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 5 (2025): Oktober: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i5.1099

Abstract

The use of technology in data management has become the key to improving the efficiency and effectiveness of company performance. PT Indofood CBP Sukses Makmur Tbk has implemented a computerized employee attendance system through the Employee Self Service (ESS) application. However, so far there has been no evaluation regarding the level of user satisfaction with the application. This study aims to measure ESS user satisfaction to provide input in future application development. The method used is End User Computing Satisfaction (EUCS) which includes five variables: Content, Accuracy, Format, Ease of Use, and Timeliness. Data was obtained through the distribution of questionnaires and analyzed using the SPSS application. The results of the t-test showed that the Format variable had the most significant influence (t = 4.281), while the other variable showed an insignificant influence individually. However, through the F test, an F value was obtained of 3.791 with a significance of 0.003, which shows that simultaneously all EUCS variables have a significant effect on user satisfaction. These results are expected to be the basis for companies to improve the performance of ESS applications and support the overall work efficiency of employees.

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