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INDONESIA
Jurnal Teknologi
Published by Universitas Muhammadiyah Jakarta
ISSN : 20851669     EISSN : 24600288     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering
This journal is a scientific journal to develop knowledge in the field of Engineering & Technology. Editors invite professionals from education and researcher to write about the progress of science in the field of Engineering & Technology. The journal is published 2 (two) times in 1 year.
Arjuna Subject : -
Articles 303 Documents
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Performance Analysis of the Biosolar Supply Chain in Mining Industries using AHP and SCOR Models Nazura, Is Anin; Hasibuan, Sawarni
Jurnal Teknologi Vol 17, No 1 (2025): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.1.33-40

Abstract

The shift towards renewable alternative energy has become a critical agenda for countries worldwide, including Indonesia. The Indonesian government has set a goal to reduce CO₂ emissions by 358 million tons, or 12.5% of the national emission reduction target by 2030. This study aims to design an efficient system for measuring the performance of the biodiesel supply chain in mining companies. The research methods used are the Analytical Hierarchy Process (AHP) and Supply Chain Operations Reference (SCOR) model. The SCOR model is used to create a process-based supply chain performance evaluation system, enabling companies to evaluate their supply chain activities comprehensively for monitoring, control, and communication of business goals to related functions and the supply chain. The SCOR model focuses on five dimensions: reliability, responsiveness, agility, cost, and asset management. As a structured process hierarchy, this model facilitates supply chain management and provides metrics to assess specific performance aspects in these SCOR dimensions. Initially, relevant Key Performance Indicators (KPIs) were validated using the SCOR framework, and the weighting of selected KPIs was carried out using the AHP method. Of the 42 initial indicators, 23 were selected. The results of the performance measurement for the biodiesel supply chain in mining companies showed that the highest SCOR values were for responsiveness and cost (1.00), followed by reliability (0.95), agility (0.88), and asset management (0.82).
Developing Innovative Packaging Designs Concept for Siomay Gondrong Msmes through Kansei Engineering Sari, Novi Purnama; Nursya'bani, Jauhariah; Sandjaja, Shafa Aisyah Pasha; Satriaji, Tegar Bayu
Jurnal Teknologi Vol 17, No 1 (2025): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.1.13-22

Abstract

Currently, Micro, Small and Medium Enterprises (MSMEs) players are competing to attract consumers to buy their products, one of which is by using attractive packaging. Siomay Gondrong is one of the MSMEs players whose packaging is not attractive, does not have a strong identity, and uses packaging that is less safe in terms of function. Based on these problems, it is necessary to develop the product packaging of Siomay Gondrong. This research aims to determine the concept and design in developing Siomay Gondrong packaging that is in accordance with consumer preferences. Kansei Engineering is used as a method to translate consumers' emotions, feelings, and desires into product design, and Principal Component Analysis (PCA) is also used as a supporting method. The total number of samples and kansei words selected as consumer references were 44 samples and 35 kansei words. After filtering with the PCA method, two packaging concept models for siomay gondrong products were identified. The two models were “Not Aesthetic - Aesthetic” and “Not Informative - Innovative”. These two concepts are retained because the values obtained in the Kaiser, Standard Deviation, and Cumulative Proportion methods are more than one (1) and have a proportion of more than 80%. Further research is needed to determine the design elements that match consumer needs using the QTT1 (quantification theory type-1) method.
Analysis of Medicine Delays for Acute Respiratory Infections in Hospitals in the Jakarta Regional Pujianto, Hendri; Nasihardani, Dana; Wiyatno, Tri Ngudi; Saputra, Jacky Cahaya; Satrio, Renno
Jurnal Teknologi Vol 17, No 1 (2025): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.1.41-52

Abstract

This study examines the causes of delays in providing medication to Acute Respiratory Infection (ARI) patients in hospitals within the Jakarta region and develops strategies to address this issue. The research findings, based on the Analytic Hierarchy Process (AHP) method reveal that empty stock at the distributors have the most significant impact on medication distribution delays, followed by wrong branch selection. The SWOT analysis results show that the Empty Stock at the Distributor is in quadrant III position which requires minimizing weaknesses to seize opportunities. Meanwhile, the alternative of wrong branch selection is in quadrant I which requires utilizing strengths to seize opportunities. It can be concluded that this indicates the company must utilize strengths to reduce weaknesses and seize opportunities. Strategies to enhance the efficiency of pharmaceutical distribution is using an integrated stock monitoring system and use of real-time stock monitoring system and strategically collaborating with distributors. The system helps companies manage stock more effectively, efficiently, and organized, while increasing competitiveness in the market.Collaboration with distributors become a key step to speed up the distribution process, reduce the risk of shortages or overstocks, and improve customer satisfaction through more timely and efficient deliverie. This research contributes theoretically to the integration AHP-SWOT approach focused on optimizing supply chain management can suggest strategy improving hospital procurement processes, and reducing ISPA medication distribution delays to enhance service level agreement which is necessary to enhance the quality of medical services in Jakarta.
Cool Load Analysis Design Thermoelectric Cooler with Ketapang Leaf Media (Terminalia catappa) Fachruddin, Faizal; Kamal, Mustopa; Riyadhi, Alwan
Jurnal Teknologi Vol 17, No 1 (2025): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.1.71-78

Abstract

The first thermoelectric effect was discovered in 1821 by T.J. Seebeck. He showed that an electromotive force could be produced by heating a junction between two dissimilar electrical conductors. The Seebeck effect can be demonstrated by making connections between different metal wires (e.g. copper and iron). The thermoelectric module will generate a voltage if the two sides of the surface have different temperatures, namely the hot side and the cold side, otherwise a temperature difference will be generated if the thermoelectric module is voltage supply. Cold load is the amount of heat transferred by the air conditioning system per unit time. The refrigerant load includes the temperature of the incoming and outgoing air, the humidity of the incoming and outgoing air, the mass flow rate of the outgoing air, and the temperature in the cooler. The cold load will directly affect the cooling performance of the machine. A thermoelectric cooler is a cooler that uses the Peltier effect in its system as a heat exchanger. This Peltier element is environmentally friendly because it does not use freon gas for the cooling process, so it is not harmful to the environment. Using a thermoelectric cooler could maintain the product, but in this study ketapang leaf elements were added. This ketapang leaf is an insulator with antibacterial properties. The method used involves collecting temperature and humidity data from the peltier in the cooler. Calculate the mass flow rate of air leaving the peltier and the cooling load on the cooler. Temperature measurements and data collection were carried out over 10 days and divided into three periods, namely morning with an average temperature of 25°C, daytime with an average temperature of 32°C and at night with an average temperature of 25°C. is 28°C. The cooler temperature measurement was performed using the TEC 12706 and TEC 12710 thermoelectric modules. The TEC 12706 type thermoelectric module obtained a final cooler temperature of 22.6°C with test time is 240 minutes. However, the TEC 12710 type thermoelectric module achieved a final cooling temperature of 23.9°C after 240 minutes of testing. These two tests are done at the same time, i.e. at night. The average cooling load on the thermoelectric cooler is 25.16 kJ/s.
Utilization of Waste Paper as Fiber for Motorcycle Fender Manufacturing Raw Materials Aljufri, Aljufri; Riskan, Ardi; Rizki, Muhammad Nuzan; Putra, Reza; Akmal, Syarifah
Jurnal Teknologi Vol 17, No 1 (2025): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.1.23-30

Abstract

The selection of paper as the main material for making composites in this study is driven by several considerations. HVS paper is produced by factories with the main raw material being wood. Besides, the use of HVS paper as a fiber for composites offers the potential to reduce industrial waste and reduce dependence on conventional raw materials. The purpose of this study was to determine the effect of variations in the volume fraction of HVS pulp fiber on the mechanical properties of the specimen surface and hardness test to determine the use of HVS pulp composites as raw material for making motorcycle fenders. The benefits of this research provide information for the manufacturing industry in developing innovative composite materials, offering sustainable alternatives that are environmentally friendly, increasing the use value of HVS paper processing, which has only been used as waste. From the results of the research conducted, the results obtained with the value: the hardness of the specimen with a volume fraction variation of 70% fiber has the highest average hardness value of 11.5 kg/mm2, and the variation of the volume fraction of 50% fiber has the lowest average hardness value of 8.6 kg/mm2, which has a difference of 2.9 kg/mm2 with a volume fraction variation of 70% fiber. The highest impact price value is obtained at a 70% pulp volume fraction with an average impact price of 0.0402 J/mm², while the lowest pulp composite impact price is at the volume fraction of 70% fiber. 50% pulp with an impact price of 0.0263 J/mm². The increase in hardness and impact resistance with increasing pulp volume explains that this composite can be an alternative material for application on motorcycle fenders.
Element Extraction in Packaging Design of Cireng Rujak X with Kansei Engineering Method Sari, Novi Purnama; Indriany, Dita Febrian; Yunisyah, Fadilah; Wiguna, Nada Nabilla
Jurnal Teknologi Vol 17, No 1 (2025): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.1.53-62

Abstract

Frozen Cireng Rujak is popular for its practicality, but the packaging of Cireng Rujak X still has many shortcomings that affect its quality. These issues arise from packaging that cannot be resealed and labels that are easily damaged. This research aims to determine the elements and design outcomes of Cireng Rujak X packaging based on consumer preferences. The study employs the Kansei Engineering method to understand consumer perceptions of the packaging. This method is supported by Quantification Theory Type-1 (QTT-1) to identify design elements. The selected concept based on QTT-1 is "Unprotection-Simple" with a score of 0.921. The resulting design elements include No Lid (X1.7), Flat Bottom shape (X2.8), Ziplock feature (X3.2), Aluminum Foil material (X4.8), Large volume (X5.3), Minimalist design style (X6.2), surface design using Labels or Stickers (X7.2), and Informative label design (X8.1). The mock-up design based on the selected concept aligns with consumers' emotional preferences.
Visualizing Data Palm Oil Plantation in Indonesia: Interactive Map Prototype Anindyati, Laksmi; Utama, Aditya Waras; Arifin, Kamal Qalby; Arsyad. P, Robiyul; Fariz, Abdillah
Jurnal Teknologi Vol 17, No 1 (2025): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.1.1-12

Abstract

This journal Interactive Maps for Visualizing Palm Oil Plantation Data in Indonesia is related to software development process. The idea started from recognizing the opportunity to visualize information about palm oil plantation using interactive map with the aim of making information easier to find and increasing the attentiveness related information about pam oil plantation. The information is statistical data shown in tabular form in “National Leading Plantation Statistics” book which is published periodically every year and publicly accessed via official website of Directorate General of Plantations. The prototype approach chosen as Software Development Life Cycle (SDLC) methodology. This journal as an output after the initial prototype was built and usability testing was carried out. The initial prototype was implemented using several tools, one of the tools that significant in data visualization is the Plotly library in python programming language. The initial prototype implemented as a website and the interactive map displays several information such as production distribution, land area and other information as data per province in Indonesia. Usability testing is accomplished by inviting potential users to become respondents. Respondent tried the product and carried through specified tasks and then answered a questionnaire which is the questions were designed to observed whether the research objectives were successfully achieved. The results of the questionnaire showed that the product helps users find information better than statistical data in tabular form and increases user interest in palm oil plantations. Some inputs from user also used as a reference for future development of the product.
Economical 3D-Printed Robotic Arm for Educational Training Purpose Hadisujoto, Budi; Budiarta, Wahyu Nur; Frandito, Raffy; Saptaji, Kushendarsyah; Triawan, Farid; Wibowo, Djati; Ong, Janice
Jurnal Teknologi Vol. 17 No. 2 (2025): Jurnal Teknologi
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.2.89-100

Abstract

The advancement of Engineering technology requires universities as the frontier to educate engineering students with the latest skillset. Fast progress of Artificial Intelligence (AI) shown by the recently released of open AI such as ChatGPT, Genius, etc., has opened a new trend of technological tools. Hence, it is necessary or it can be said a must to train future engineers how to at least use these tools. Robotics and automation have long been used to assist humans in manufacture, logistic, health, and many other areas. Implementing AI into robotics creates intelligent systems which are predicted to be widely used. However, for educational institutions, especially in developing countries, the cost to afford the training robot equipment is still pricy. Here, we present designing and building of an economical robotic arm using 3D printed parts and open sources. The robot arm has six Degrees of Freedoms (DoF) and capable of lifting about 450 grams of maximum load. Some suggestions include future development are presented.
Mental Health Chatbot for Detecting Depression Symptoms Using Natural Language Processing and DASS-21 Nuraini, Fadilah; Najamuddin Dwi Miharja, Muhammad; Anshor, Abdul Halim
Jurnal Teknologi Vol. 17 No. 2 (2025): Jurnal Teknologi
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.2.133-142

Abstract

The prevalence of depressive symptoms among university students continues to rise, driven by academic pressure, social isolation, and limited access to psychological support. Early detection and intervention remain critical challenges in mental health services. This study presents the design and implementation of an intelligent chatbot that integrates the Depression Anxiety Stress Scale-21 (DASS-21) with Natural Language Processing (NLP) techniques to enable non-clinical mental health screening. The chatbot processes user input through intent classification and text preprocessing pipelines to dynamically assess indicators of depression, anxiety, and stress. Utilizing a hybrid rule-based and machine learning architecture, the system provides a self-assessment interface that delivers personalized feedback based on the DASS-21 scoring rubric. Two models were evaluated: a TF-IDF-based Neural Network and a fine-tuned BERT model. The TF-IDF model achieved an accuracy of ninety-one percent with a weighted F1-score of 0.91, while the BERT model outperformed it with an accuracy of ninety-four percent and a weighted F1-score of 0.94. Notably, the BERT model demonstrated a recall of ninety-eight percent in identifying moderate depression cases. However, both models showed limitations in detecting mild depression due to data imbalance. The approach prioritizes usability, anonymity, and accessibility, key factors in promoting help-seeking behavior among young adults. The results demonstrate the potential of NLP-powered conversational agents as scalable, low-cost tools for early detection of mental health risks in academic environments.
Implementation of Technology-Based K3 System to Improve Occupational Safety in Companies Dongoran, Johnson; Dwi Nugroho, Gigih Rirudro
Jurnal Teknologi Vol. 17 No. 2 (2025): Jurnal Teknologi
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.2.123-132

Abstract

Workplace accidents in Indonesia have shown a consistent rise, with 234,270 cases recorded in 2021, emphasizing the need for improved safety measures. This study investigates the impact of implementing technology-based Occupational Safety and Health (OSH) systems at PT. Sinar Makmur Semarang, utilizing a qualitative descriptive approach with interviews and documentation. Findings reveal that while technology like CCTV and personal protective equipment has enhanced safety, challenges such as employee compliance and technological maintenance remain. The study contributes practical recommendations for adopting technology-driven OSH systems and theoretical insights for future research in industrial safety.

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