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Jurnal Teknik
Published by Universitas Negeri Gorontalo
ISSN : 16936191     EISSN : 27157660     DOI : https://doi.org/10.37031/jt
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknik (JT) is a peer-reviewed journal published by Faculty of Engineering, State University of Gorontalo. JT is published two times annually, in June and December. JT provides a place for academics, researchers, and practitioners to publish scientific articles. The scope of the articles listed in this journal is related to various topics such as Civil Engineering, Electrical Engineering, Informatics Engineering, Craft Engineering, Architecture, Industrial Engineering, Mechanical Engineering, Engineering Education, and other related engineering fields.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 123 Documents
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Analisis Kelelahan Dan Beban Kerja Menggunakan Subjective Self Rating Test Dan NASA-TLX Nurmarifah, Atun; Lahay, Idham Halid; Sunardi
Jurnal Teknik Vol 22 No 2 (2024): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v22i2.526

Abstract

The application of ergonomics in the workplace is one concept that can be done to provide comfort and safety to workers when doing work. This research was conducted on UD workers. Arafat Meubel which is a furniture manufacturing factory. The problem for workers is the number of targets from the company, which causes working time outside the normal working limits and makes workers experience fatigue and excessive workload. This study aims to analyze the level of fatigue and mental workload of workers, and determine the relationship between the two. The methods used are Subjective Self Rating Test to determine the level of fatigue and Nasa-Tlx to determine the level of mental workload, and using the Spearman Rank Test to determine the relationship between fatigue and mental workload. The results obtained from data processing and analysis were that 2 workers experienced high levels of fatigue and 5 workers experienced high levels of mental workload. In addition, there is a relationship between fatigue and mental workload with a correlation coefficient of 0.559, including in the medium relationship category.
Analisis Persepsi Masyarakat Terhadap Implementasi Smart City di Kota Gorontalo Wunarlan, Irwan; Hatu, Ratih Ikawaty R.; Paramata, Mulyani Zahra; Abdullah, Muh. Fadli; Gobel, Sitty Faradillah Putri
Jurnal Teknik Vol 22 No 2 (2024): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v22i2.534

Abstract

Over the year population have continued increase and the limited natural resources make city management increasingly complex. The concept of smart cities, which is a major issue in big cities around the world, encourages community participation. The importance of community participation in the development of technology-based public services underlies the purpose of this study to analyze community perceptions regarding the implementation of smart cities in Gorontalo City. This study uses primary data collection methods assisted by distributing questionnaires to respondents in nine sub-districts and 50 villages, as well as data obtained from institutional surveys and related documents. The results of the analysis show that the developed model is able to explain 48.26% of the variation in community perceptions of city services. It was found that positive community perceptions have the potential to increase their involvement in smart city programs, while negative perceptions can be an obstacle to implementation. This study emphasizes the importance of community understanding of the benefits of smart city technology, as well as the need for effective socialization efforts to increase community support for this initiative. The results of the analysis of community perceptions regarding the implementation of smart cities are expected to be used as a reference for local governments in formulating responsive policies to community needs.
Sistem Pakar Menu Sehat Berdasarkan Golongan Darah Menggunakan Metode Certainty Factor Asikin, Butsiarah; Suhada, Sitti
Jurnal Teknik Vol 22 No 2 (2024): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v22i2.523

Abstract

A healthy menu refers to a list of foods that can provide all the essential nutrients for the body, such as carbohydrates, proteins, fibers, fats, vitamins, and minerals, in balanced proportions. The types of food recommended for consumption must be in accordance with blood type, in order to affect the body's metabolism. The purpose of this study was to develop a healthy menu expert system based on blood type using the certainty factor method. The certainty factor method is used to determine the level of certainty in providing food recommendations that are in accordance with blood type in order to support health. The research approach applied is the waterfall method, which includes several stages, such as needs analysis, system design, coding, testing, and implementation. Based on the research conducted, a healthy menu expert system based on blood type using the certainty factor method was successfully developed. The results of the black box test showed that the alpha testing test obtained an average value of 4.3, which is included in the valid category, while the beta testing test produced an average value of 4.0, which is also valid. After being tested, this expert system had an accuracy of 91.6%, which indicates that the system provides healthy menu recommendations that are appropriate, accurate, and useful.
Thermal Comfort Determines User Subjectivity in Lamongan Grand Mosque Agustapraja, Hammam Rofiqi; Wahab, Izudinshah bin Abd; Digdaya, Alfin Bagas
Jurnal Teknik Vol 23 No 1 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i1.468

Abstract

Mosque is a place of worship, which requires comfort to enhance the quality of worship, thermal comfort being one of the considerations in the prayer space of the mosque. This study aims to analyze the level of thermal comfort and thermal preferences of users in the interior space of the Grand Mosque of Lamongan. The method used is quantitative, collecting data through surveys at the Grand Mosque of Lamongan. Some of the data collected include personal data (clothing and activities) and measurements of environmental parameters; air temperature, air humidity, and wind speed. At the same time, users were asked to fill out a questionnaire asking about their perceived level of comfort at that time. The results of the study show that the interior space of the mosque has an average temperature ranging from 28.4 ºC to 29.08 ºC, while the survey questionnaire results indicate that 89.1% of respondents can accept the existing thermal conditions. This may be due to the fact that the temperature inside the mosque is much lower compared to the outdoor temperature.
Analysis of Preventive Maintenance on Heavy Dump Suspension Using Reliability-Centered Maintenance Method Puspa, Sofia Debi; Tono Sukarnoto; Dany Nugraha Tantra; Christina Eni Pujiastuti; Joseph Andrew Leo
Jurnal Teknik Vol 23 No 1 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i1.512

Abstract

The suspension system on Heavy Dump (HD) vehicles is crucial in maintaining stability, comfort, and reliability when used in harsh environments. HD vehicles have a hydraulic-pneumatic suspension that uses nitrogen gas and oil to overcome the load and vibrations from the road. The suspension maintains vehicle components and protects the load, especially when crossing damaged or bumpy roads at high speed. This study aims to optimize preventive maintenance planning using the Reliability-Centered Maintenance (RCM) method and determine the suspension system's preventive activities to reduce breakdowns. In designing effective preventive maintenance, the RCM approach and related methods, such as FMEA, are used to identify critical machines as the focus of analysis. In addition, a statistical distribution approach is used to determine the optimal maintenance activity interval. Based on the analysis results, it was obtained that the data follows a lognormal distribution where the optimization of preventive maintenance on the suspension component is every 370-hour time interval for each machine working. Changing the time interval increased the reliability value from 34.09% to 93.60% before and after preventive maintenance. Preventive maintenance activities with a time interval of 370 hours to reduce unscheduled breakdowns in the form of adjusting suspension components
Pemanfaatan Serabut Kelapa sebagai Bahan Pembuatan Rangka Drone Muhammad Ikhsan; Permana, Indra; Pratama, Riza Arif; Setiajit, Sahid Bayu; Assidiqi, Dimas Ahsan; Ramadhani, Sandy Laila Suci
Jurnal Teknik Vol 23 No 1 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i1.524

Abstract

Drones are one of the latest technologies that are developing rapidly to provide positive benefits in society. Drone development can be done in various ways, including by improving the performance of the drone frame. Drone frames can be made of various types of materials, one of which is composite material that has mechanical properties that can be adjusted to needs. In this study, coconut fiber was chosen as the composite material because of its abundant availability, light weight, and environmentally friendly. Coconut fiber composites are made to be one of the alternatives for drone frames. To overcome its low strength, coconut fiber is used together with fiberglass to become a hybrid composite. Tensile tests, bending tests, and impact tests were carried out to determine the mechanical characteristics of the hybrid composite. The test results are then used as the basis for determining the drone design. Two types of tensile test specimens were made using the hand lay-up method where the type of fiber was varied to see the effect of variations in fiber types on the strength of the composite. The first type is a composite with fiber in the form of coconut fiber mats and fiberglass mats, and the second type is a composite with fiber in the form of coconut fiber mats and WR (Woven Roving) fiberglass. The tensile test results show that the second type of composite is more recommended because of its higher strength and more consistent results. The test results show that the second type of composite has a tensile strength of 32.7 MPa, a flexural strength of 82.4 MPa, and is able to absorb impact energy of 2.34 Joules. And finally, in this research, the hybrid composite was made into a drone frame and then integrated with electrical components so that the drone can fly
Pengaruh Beban Kerja Mental Terhadap Waktu Respon Pengemudi di Kondisi Lalu Lintas Pedesaan dan Perkotaan Lita Setiawati; Lahay, Idham Halid; Wolok, Eduart; Nugroho, Sinung; Nugroho, Hastiya Annisa Fitri; Nugroho, Mutiara Kurnia
Jurnal Teknik Vol 23 No 1 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i1.528

Abstract

Mental workload is one of the factors that affect driver safety. This study examines the effect of mental workload on truck driver response time in rural and urban traffic conditions. Mental workload was measured using the NASA-TLX questionnaire and physiological measurements using HRV and EEG. Response time was tested using detection simulation. The results showed that drivers experienced moderately high mental workload, with the urban environment showing cognitive enhancement based on alpha signals and LF variables. However, regression analysis found no significant relationship between mental workload and driver response time in either rural or urban environments. This study provides insight that while traffic conditions may affect the level of mental workload of drivers, the impact on response time is not always significant. These findings can serve as a basis for further research in understanding the relationship between mental workload, traffic conditions and driving safety.
Pengembangan Chatbot AI untuk Layanan Pelanggan PLN Menggunakan Algoritma Long Short Term Memory (LSTM) Afandi, Afandi; Rokhayadi, Wakhid; Susanto, Edi
Jurnal Teknik Vol 23 No 1 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i1.553

Abstract

Digital transformation requires customer service to be fast, responsive, and continuously accessible. To address this demand, this study presents the development of an AI-based chatbot employing the Long Short-Term Memory (LSTM) algorithm to enhance customer support for PLN. LSTM was chosen due to its effectiveness in capturing conversational context and understanding natural language patterns. The development process includes data preprocessing, model training, and performance evaluation using metrics such as accuracy, precision, recall, and F1-score. Experimental results on 133 test samples demonstrate an accuracy of 82.71%, with an average precision of 82%, recall of 77%, and F1-score of 77%, indicating reliable model performance. The chatbot is designed to handle common customer inquiries, including billing information, service disruptions, and other general services. This innovation is expected to improve PLN’s operational efficiency while delivering faster, more personalized, and dependable customer service, aligning with the demands of the digital era.
Analisis Dampak Lingkungan dan Sosial pada UMKM Menggunakan Metode Interpretive Structural Modeling Hamzah, Dimas; Rizky Pratama, Bayu; Vanny Ravidianti, Nabilla; Yuliawati, Evi
Jurnal Teknik Vol 23 No 1 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i1.558

Abstract

Small and Medium Enterprises (SMEs) in Indonesia make a significant contribution to the national economy, particularly in addressing poverty and unemployment. One su`ch SME in Mojokerto, which produces cassava crackers, faces various environmental and social issues in its production process. This study aims to analyze and classify these factors using the Interpretative Structural Modeling (ISM) method. The results of the ISM hierarchical structure analysis show that the factor "Employees parking vehicles haphazardly" is at level three, "Drying process obstructs public road access" is at level two, while "Unpleasant odor during drying," "Noise from machinery during production," and "Air pollution from the frying process" are at level one. The MICMAC diagram indicates that "Unpleasant odor during drying" and "Air pollution from the frying process" are the most critical factors and have the highest priority due to their significant influence on other elements.
Optimalisasi Kinerja Ruas Jalan Dengan Metode PKJI 2023 dan Aplikasi PTV Vissim Pratma, Najwan; Aprianto, Rizal; Siswanto, Joko
Jurnal Teknik Vol 23 No 1 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i1.607

Abstract

The suboptimal performance of road segments is a major issue in the transportation system that causes congestion and a decrease in mobility efficiency. Kaliurang Road in Sleman Regency has poor road performance, resulting in disrupted inter-regional connectivity. Optimization of road segment performance is proposed through performance analysis and traffic engineering scenario simulation. PKJI 2023 is used to analyze performance and PTV Vissim 2025 is used for simulating the testing of 30 optimization scenarios. Data was collected through direct surveys and documentation from the Transportation Department. Simulation validation uses GEH for vehicle volume and MAPE for speed with an analysis of five variables (vehicle speed, travel time, vehicle density, occupancy rate, and relative delay). Scenario 30, with a combination of lane additions, road widening, removal of on-street parking, one-way systems, and vehicle type hour restrictions, resulted in the best optimization with an 11.57% increase in speed, a 30.93% reduction in travel time, a 67.74% reduction in density, a 64.76% reduction in occupancy rate, and a 92.66% reduction in relative delay. The optimization results can be used as a strategic step for stakeholders in formulating policies to improve road segment performance to support sustainable inter-regional connectivity.

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