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FAKULTAS TEKNIK DAN KOMPUTER UNIVERSITAS PUTERA BATAM (Sistem Informasi, Teknik Informatika & Teknik Industri) Jl. R. Soeprapto – Tembesi – Batam – Kepulauan Riau
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Computer & Science Industrial Engineering Journal
Published by Universitas Putera Batam
ISSN : -     EISSN : 27156265     DOI : -
Core Subject : Science,
Computer Science & IT
Journal Comasie is a journal that combines 3 science namely informatics engineering, information systems and industrial engineering. The theme and scope can be seen in the scope section. This journal was created as a means of publicizing the results of research conducted by lecturers and students. This journal is published 3 times a year or every 4 months in a year. The main purpose of this journal is to facilitate students who want to publish their scientific work so that it will increase the profusion of knowledge. We on behalf of all the managers express gratitude for all efforts and support in the publication of this journal and our great hope that this journal can be a reference for the community in improving technology and to advance Indonesia (Amrizal, Andi, Welly, Rashid)
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 783 Documents
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PERANCANGAN FASILITAS KERJA YANG ERGONOMIS PADA AKTIVITAS PENGEMASAN KERUPUK DI UKM KERUPUK LATANSA Endrian, Bayu; Zetli, Sri
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9788

Abstract

Small and Medium Enterprises (SMEs) in Indonesia continue to experience rapid growth, including Kerupuk Latansa SME in Batam City. However, the packaging activities at this SME are still performed using non-ergonomic work facilities, causing physical complaints among workers. This study aims to identify the level of Musculoskeletal Disorders (MSDs) experienced by workers and to design ergonomic work facilities to improve posture and enhance work comfort. The methods used in this research include posture analysis using RULA (Rapid Upper Limb Assessment) and identification of physical complaints through the Nordic Body Map (NBM) questionnaire. Workers' anthropometric data were used as the basis for designing the work facilities. The results of the study revealed that the most common MSD complaints occurred in the neck, shoulders, back, upper arms, waist, knees, and calves, with a high-risk category. The total percentage of MSD complaints was 64% for Worker 1, 43% for Worker 2, 63% for Worker 3, and 64% for Worker 4. As a solution, an ergonomic worktable was designed with specifications of 90.6 cm in height, 250 cm in length, a partition height of 20 cm, and a table tilt angle of 100°, adjusted according to workers' anthropometric data.
PERBAIKAN KUALITAS MOLD PROSES INJECTION MOLDING PADA PT GIKEN PRECISION INDONESIA Andika Nurhadi, Dwimas; Anggia Arista
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9790

Abstract

PT Giken Precision Indonesia is a manufacturing company specializing in plastic molding products, located in Batam and established in 1991. Based on field observations, frequent mold damage in injection molding machines has resulted in defects in the wing eater product. This issue occurs due to the loosening of mold pins within the upper and lower plates of the mold. The total defective products for wing eater in one year reached 6.73%, exceeding the company’s tolerance limit of 5% annually. This study aims to improve the quality of injection molding molds in the wing eater production process and determine the appropriate mold design to enhance the injection molding process quality. The methods used in this study are Design for Manufacturing and Assembly (DFMA) and Defects Per Million Opportunities (DPMO). The results show that after designing an ejector set with upper plate and lower plate dimensions of 500 mm in length and 338 mm in width, the ejector pins were redesigned with two dimensional variations: a base diameter of 5 mm and a tip diameter of 4 mm. The percentage of defective products significantly decreased from 7.19% in January 2023 to 2.06% in February 2024. The Sigma level improved from 3.82 (10,170 DPMO) to 4.25 (2,980 DPMO), indicating a 70.7% reduction in defects. Thus, the mold quality can be improved.
ANALISIS KLASIFIKASI EMAIL SPAM MENGGUNAKAN ALGORITMA NAÏVE BAYES Rahman, Azan; Maslan, Andi
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9792

Abstract

Spam emails pose a significant challenge in digital communication, requiring effective classification methods to enhance cybersecurity. This study evaluates the performance of the Naïve Bayes algorithm in detecting spam emails, focusing on accuracy, precision, and recall. The dataset consists of pre-labeled emails processed using TF-IDF for feature extraction. The results indicate that the algorithm achieved an accuracy of 90% before addressing class imbalance. After applying SMOTE, the final accuracy improved to 98%. These findings demonstrate that Naïve Bayes is an effective method for spam email classification, with SMOTE enhancing its performance in handling class imbalance.
ANALISIS BEBAN KERJA FISIK DALAM PENENTUAN WAKTU ISTIRAHAT PADA KARYAWAN WELDER PADA PT MCDERMOT INDONESIA Dominggus Awola, Fernando; Zetli, Sri
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9798

Abstract

This study aims to analyze the physical workload and determine the optimal rest time for welders at PT McDermott Indonesia using a physiological approach. Workload was measured through the Cardiovascular Load (CVL) method and energy consumption based on heart rates during work. The results showed that %CVL ranged from 30%–59%, categorized as "needs improvement." Most workers had energy consumption <5 Kcal/min, but three workers exceeded this threshold: two morning shift level-2 welders (Putra 5.07 Kcal/min; Hotmianto 5.05 Kcal/min) and one night shift level-4 welder (Deo 5.25 Kcal/min). These workers required additional rest times of 11.8 minutes, 8.5 minutes, and 38.7 minutes, respectively. Meanwhile, the standard 30-minute rest period was sufficient for others.
ANALISIS PRODUCTIVE MAINTENANCE PADA MESIN WELDING POLARIS DI PT EXCELITAS Firmansyah, Ikhsan; Sirait, Ganda
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9800

Abstract

This study aims to analyze the performance of the Polaris Welding machine at PT Excelitas using the Mean Time Between Failure (MTBF), Mean Time To Repair (MTTR), and Overall Availability methods. The Polaris Welding machine often experiences downtime, so that productivity is disrupted. The results of the study showed an average MTBF value of 3.24 hours, MTTR of 0.55 hours, and overall availability of 84.66%, which is still below the global standard (≥ 90%). The main causal factors are lack of operator training, unscheduled machine maintenance, and material mismatch. To improve machine performance, planned maintenance standards and autonomous maintenance are recommended. This approach is expected to minimize downtime and increase the effectiveness of the production process at PT Excelitas.
RANCANG BANGUN ALAT AUTO FEEDER HEWAN PELIHARAN BERBASIS ARDUINO Eko, Eko Giri Pratama; Hotma Pangaribuan
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9801

Abstract

Ensuring proper and regular feeding is an important aspect of maintaining the health and well-being of pets. However, pet owners sometimes face challenges in consistently providing food to their pets, especially when they are busy with work or other activities. To address this issue, an automated feeding system can be an effective solution. This abstract highlights the implementation of an automated pet feeding system using Arduino Uno, a popular open-source microcontroller board. The system is designed to dispense the appropriate amount of food at scheduled times, ensuring that pets receive their meals on time. The Arduino Uno acts as the brain of the system, controlling various components such as a motorized food dispenser, a digital display for programming and monitoring, and sensors for detecting the presence of pets and food levels. By utilizing a programmable microcontroller, the system can be easily customized to accommodate specific feeding requirements and pet schedules. Overall, the automated pet feeding system using Arduino Uno offers a practical and reliable solution for pet owners who struggle to maintain consistent feeding routines. By utilizing technology such as Arduino Uno, pet owners can ensure that their pets receive proper nutrition, even in their absence.
PERANCANGAN FASILITAS KERJA YANG ERGONOMIS PADA PROSES PEMOTONGAN MATERIAL DI DEPARTEMEN STORE DI PT PEGAUNIHAN TECNOLOGY INDONESIA Sinaga, Mikael; Zetli, Sri
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9803

Abstract

This study is a study conducted on the Department Store operator at PT Pegaunihan Tecnology Indonesia, in the manual handling work process workers have a high risk of mulculoskeletal Disorders (MSDs). The study was conducted by observation and distributing questionnaires to workers, the results of the Nordyc Body Map (NBM) questionnaire showed a total of 24 workers complained of upper neck body parts, stiff neck with a percentage of over 90% of workers feeling these complaints. Furthermore, calculations with Rapid Entire Body Assessment (REBA) resulted in 3 workers with the highest risk with a high risk category. From this situation, improvements need to be made. To make improvements, anthropometric data is used, the body dimension data needed in the design is PTD (Front Arm Length), TSB (Standing Elbow Height) and Arm Span. After the calculation, the dimensions of the table were obtained with a width of 70 cm, a length of 110 cm and a height of 103 cm, the complaint value decreased from initially high risk to low risk.
DESAIN DAN IMPLEMENTASI SISTEM PEMANTAUAN KUALITAS UDARA DALAM RUANGAN BERBASIS ARDUINO Raja Amelia Lestari; Pangaribuan, Hotma
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9812

Abstract

In this research, a prototype is designed to detect indoor air quality. The designed system will display indoor air quality data on an LCD screen and provide a warning via a buzzer if the air quality reaches an unhealthy threshold. The LED indicator will light up as a visual indication of the air quality based on the concentration of detected pollutants, such as dust particles, harmful gases, temperature, and humidity. The MQ-135 sensor is used to detect harmful gases such as carbon dioxide that can affect air quality. The GP2Y1010AU0F sensor is used to detect particles, while the DHT22 is used to measure temperature and humidity. In the final stage, conclusions will be drawn based on the results of the system tests that have been carried out. It is hoped that through this research, the developed system can provide solutions to indoor air quality problems and contribute to creating a healthier environment for residents.
ANALISIS POSTUR TUBUH PEKERJA PROSES PENGGORENGAN PADA UMKM KERUPUK RASA PUNCAR TOWER PIAYU Khairi, Defiki; Zetli, Sri
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9814

Abstract

Muscoskeletal Disorder is one of the causes of poor work posture during work activities. Efforts to minimize this complaint are by identifying, evaluating, and improving the products that are the work media and body posture while working. This study is a study conducted on the three work activities at UMKM Kerupuk Khas Bandung Rasa Puncar Tower Piayu Batam such as sorting crackers, frying and filtering crackers. Based on the results of body posture with Rapid Entire Body Assessment (REBA) the three activities of sorting crackers, frying and filtering crackers are high-risk activities are frying activities with a bent position when taking or moving raw cracker materials to the fryer or other places can put excessive pressure on the lower spine (lumbar). If workers often lift materials in a non-ideal position, the risk of back and shoulder muscle injuries increases. The improvements made by the researcher were to design a frying table using anthropometric data with the Front Arm Length (JTD) used for a frying pan diameter of 80 cm. Standing Elbow Height (SEL) is used as a benchmark for table height with a result of 100 cm. Hand Span (RT) is used for the length of the cracker frying table with 240 cm by placing 2 frying pans for 2 cracker frying workers.
IMPLEMENTASI APLIKASI MENU PEMESANAN DENGAN QR CODE PADA WARUNG KOPI MENGGUNAKAN METODE FCFS BERBASIS ANDROID Veronika, Juwita; Putri Pratiwi, Mariska
Computer Science and Industrial Engineering Vol 12 No 3 (2025): Comasie Vol 12 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i3.9827

Abstract

In the current era, coffee shops have become popular destinations for people to unwind while enjoying a variety of food and beverages. Nevertheless, conventional manual ordering systems often result in lengthy queues and operational inefficiencies. To overcome these challenges, this research focuses on developing an Android-based menu ordering application that utilizes QR Code technology combined with the First Come First Serve (FCFS) method. The application aims to streamline the ordering process for customers without requiring staff assistance while enhancing overall workflow efficiency. By employing QR Code technology, customers can view the menu directly on their devices, place orders, and send them digitally to the system. The FCFS method ensures that orders are processed in the sequence they are received, thereby reducing errors in service prioritization. The application was developed using the Waterfall model of the Software Development Life Cycle (SDLC), which encompasses stages such as requirements analysis, design, implementation, and testing. Testing outcomes reveal that the application significantly improves ordering efficiency, decreases waiting times, and increases user satisfaction. By adopting this system, coffee shops can enhance service quality, optimize operations, and provide customers with a more seamless and enjoyable experience.

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