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61	Digital Industry 4.0	ABS-89
Marketing Strategy to Increase Market Snack Sales in Street Vendor Businesses in the Penfui Area of Kupang City Rosmiati(a*) , Syahrul Bahari(b) , Shadli Rolaskhi(c) a) Politeknik Nengeri Kupang Lasiana, Kelapa Lima, Kupang City, East Nusa Tenggara 85258 b) Universitas Muhammadyah Kupang Jl. K. H. Ahmad Dahlan, Kayu Putih, Kec. Oebobo, Kota Kupang, Nusa Tenggara Tim. 85228 Abstract Street vendors in Kupang City, particularly in the Penfui area, play a crucial role in the local economy through the sale of traditional market snacks. However, these micro-enterprises face significant challenges, including declining sales and low digital adoption rates. This study aims to develop and implement an effective marketing strategy to increase market snack sales for street vendors in the Penfui area. Employing a mixed-method approach, we collected data from 71 street vendors and 68 consumers through in-depth interviews, surveys, and field observations over a six-month period. The research identified key issues such as limited product innovation, suboptimal pricing strategies, and inadequate promotion techniques. Based on these findings and a comprehensive SWOT analysis, we developed an integrated marketing strategy focusing on product diversification, value-based pricing, strategic location optimization, and digital promotion. This strategy was implemented with 10 pilot vendors over a three-month period. Results show a 35% increase in average daily turnover (from IDR 500,000 to IDR 675,000), a 150% growth in social media followers, and an improvement in customer satisfaction from 65% to 82%. The study demonstrates that a hybrid approach combining traditional strengths with modern digital marketing techniques, tailored to local contexts, can significantly enhance the competitiveness and sustainability of street vendors in the traditional snack market. These findings provide valuable insights for policymakers and stakeholders in developing supportive ecosystems for micro-enterprises in urban areas, contributing to both economic development and the preservation of culinary heritage. Keywords: market snacks, marketing strategy, street vendors, MSMEs, Kupang City Share Link | Plain Format | Corresponding Author (Rosmiati SE.M.SI)

62	Digital Industry 4.0	ABS-93
IoT-Based System for Uric Acid Level Detection Through Urine pH Monitoring as an Alternative Dr. Ir. Rika Rokhana, M.T- Agrippina Waya Rahmaning Gusti, S.T., M.T- Nisrina Farah Adani Electronic Engineering Polytechnic Institute of Surabaya Abstract In recent years, there has been a significant increase in the number of individuals suffering from gout arthritis or uric acid disease worldwide. The diagnosis of uric acid disease is generally conducted using a blood test. However, not everyone is willing to undergo this test due to a fear of needles. This research aims to create a new innovation as an alternative to non-invasive test for measuring uric acid level through urine pH. The system uses microcontroller and a pH sensor, with the microcontroller serving as the core that manages everything. The sensor measures urine^s pH, which is then converted into uric acid values in milligrams per deciliter (mg/dL) using regression analysis. The uric acid level is then displayed on a LCD screen. Additionally, the device is IoT-based, allowing it to be connected to a website for easy monitoring by both patients and healthcare professionals. The accuracy of this system is 95.54%. The results of this study are expected to contribute to the development of better and evidence-based diagnostic protocols in the medical field. Further improvement such as giving more data training is expected to be done in the future so it will increase the accuracy of the system to measure uric acid level. Keywords: Uric Acid, pH Sensor, Internet of Thing Share Link | Plain Format | Corresponding Author (Nisrina Farah Adani)

63	Digital Industry 4.0	ABS-97
IoT-based Crash Detection System Agung Nugroho Pramudhita, (a*), Meyti Eka Apriyani, (a), Irsyad Arif Mashudi, (a), Odhitya Desta Triswidrananta, (d) a) Department of Information Technology, State Polytechnic of Malang, Malang, East Java, Indonesia *agung.pramudhita[at]polinema.ac.id b) Department of Information Technology, State Polytechnic of Malang, Malang, East Java, Indonesia Abstract Traffic accidents in Indonesia resulted in 28,131 fatalities from 139,258 cases in 2022 alone, highlighting a critical need for improved safety measures. This research aims to develop an advanced technology-based tool to enhance traffic accident detection and response. The proposed system utilizes a Raspberry Pi in conjunction with various sensors, including GPS, gyroscope, and accelerometer, to accurately detect accidents. Upon detection, the system promptly sends detailed accident information via a Telegram bot, ensuring timely communication with emergency responders. To further enhance the detection accuracy, the K-Nearest Neighbor (KNN) algorithm is implemented. The algorithm demonstrated significant improvements in accuracy, achieving 93% accuracy with K=3 and 90% with K=5, compared to 80% accuracy without the use of KNN. These results indicate that the incorporation of KNN substantially enhances the system^s reliability in identifying accidents. Field trials underscored the system^s effectiveness, as it successfully transmitted accident information through the Telegram bot without delay. Additionally, the data collected by the system is displayed on an internet-accessible website dashboard, providing a comprehensive overview of the accident^s details. This dashboard allows for real-time monitoring and analysis, facilitating quicker and more informed decision-making by authorities. Overall, this development addresses the existing gap in accident detection technology, aiming to reduce the number of fatalities and improve response times in traffic accident scenarios. By leveraging the power of IoT and machine learning, this research contributes to the advancement of safer and smarter transportation systems in Indonesia. Keywords: Traffic accident detection- K-Nearest Neighbor (KNN) algorithm- Telegram bot- monitoring dashboard Share Link | Plain Format | Corresponding Author (Agung Nugroho Pramudhita)

64	Digital Industry 4.0	ABS-98
Sustainable Business Practices Measurement Using EFQM 2020 in a Higher Education Business Incubator: A Case Study of WMK PBLT Danis Maulana, Aura Faiza Candra Cantika, Farizi Rachman, Fitri Hardiyanti, Ristanti Akseptori, Yesica Novrita Devi Politeknik Perkapalan Negeri Surabaya Abstract Indonesian government initiatives aimed at fostering entrepreneurship and economic growth by 2024 has the goal of growing new entrepreneurs and increase competitiveness of small and medium industries. Consequently, evaluating the performance of student entrepreneurs has become crucial. This research assesses tenant business performance within the Wirausaha Merdeka program by using the European Foundation of Quality Management (EFQM) 2020 framework with Result, Approach, Deploy, Assessment & Refinement (RADAR) logic. The objective is to identify business tenant strengths, weaknesses, and recommend improvements based on priority areas. The findings indicate that most student entrepreneurs primarily focus on product and process development, with a smaller group adopting a system-oriented approach. To improve tenant overall performance, recommendations for improvements are targeted to EFQM criteria with low scores, Driving Performance & Transformation, Organizational Culture & Leadership, and Engaging Stakeholders. Keywords: EFQM 2020, RADAR, Business Sustainability, Performance Measurement, Wirausaha Merdeka, PBLT Share Link | Plain Format | Corresponding Author (Farizi Rachman)

65	Digital Industry 4.0	ABS-103
Entrepreneurial Resilience Through the development of MSMEs in the Processing Industry Food in East Java, Indonesialease Just Try to Submit This Sample Abstract Emrizal. Primadona, Sepri Neswardi, Yosi Suryani Politeknik Negeri Padang Abstract This study aims to analyze the marketing mix strategy, quality of sources human resources, entrepreneurial characteristics, and accounting knowledge on development MSMEs in Tanggulangin District, East Java Province, Indonesia.This research uses quantitative methods. The population in this study were food processing industry entrepreneurs registered with the Department of Trade, Cooperatives and SMEs, Sidoarjo Regency, Tanggulangin District, which listed 315 SMEs. The sample in this study were 276 business actors who were obtained through the accidental sampling technique and the SmartPLS structural equation model (SEM) analysis test. The results show that the marketing mix strategy, quality of human resources, entrepreneurial characteristics, and accounting knowledge have a positive and significant effect on the development of MSMEs in Tanggulangin District Keywords: Marketing mix strategy, quality of human resources, entrepreneurial characteristics, and knowledge of accounting and MSME development Share Link | Plain Format | Corresponding Author (Emrizal Emrizal)

66	Digital Industry 4.0	ABS-107
Developing an Electronic Nursing Care Application for effective Clinical Practice Education of Nursing Students in Hospital Setting Minanton (a*), Habsyah Saparidah Agustina (a), Nurfitria Khoirunnisa (b) and Novian Mahayu Adiutama (a) a) Department of Nursing, Politeknik Negeri Subang, Indonesia *Minanton[at]polsub.ac.id b) Department of Computer System & Technology, Politeknik Negeri Subang, Indonesia Abstract The current trend of digitalization in hospitals highlights the necessity for nursing education to adopt electronic nursing care systems, emphasizing the need to focus on information education and the development of electronic-based applications for practical nursing education. This study aimed to identify key data and assess nursing students^ perceptions regarding electronic nursing care systems in their education while also focusing on designing and developing the ^ENC^ electronic nursing documentation system. This study employed an agile methodology encompassing planning, design, development, testing, deployment, and review phases to create an electronic nursing documentation system, utilizing a mixed-methods research approach with an embedded design and purposive sampling to recruit 62 participants, with quantitative data collected via surveys and qualitative data from verbatim-transcribed interviews with 14 students. The research results indicated that 96.8% of respondents were in favor of implementing electronic nursing care, with 100% ready to use it. Commonly used by students and nurses were 27 diagnoses and 30 interventions. Qualitative findings revealed two main themes: challenges in managing paper-based nursing care and the necessity and readiness for electronic nursing care. Post-prototype completion, a survey with 30 nursing students assessed the application^s usability, quality, and satisfaction, showing both positive and negative impacts. The ENC application is anticipated to improve nursing care quality among students (74%) and reduce the burden of manual documentation (98%), with high satisfaction (93%) and error reduction (97%). Nevertheless, concerns included slow application speed (80%), uncertainty about immediate use (68%), and data leakage risks (86%). The ENC meets the needs of nursing students by easing the transition from paper-based to electronic documentation, enhancing acceptance and usage in clinical settings, improving efficiency, reducing manual workload, increasing productivity, and enhancing patient care quality, though attention to its negative impacts is essential Keywords: Electronic nursing care- Clinical practice- Agile method- Nursing student Share Link | Plain Format | Corresponding Author (Minanton Minanton)

67	Digital Industry 4.0	ABS-113
Geofencing Technology for Service Optimization at Manado State Polytechnic Jeanely Rangkang1, a) Marike Kondoj2, b) Tanrijaya Bawoel3, c) Politeknik Negeri Manado Abstract Currently, Geofence Technology can provide information about the user^s location. This research aims to develop the Polimdo Geofence Application, which provides notifications regarding user location so that it can monitor user whereabouts in real-time. The Polimdo Geofence application was created using the PHP programming language and for large databases use MySQL while for local databases use SQLite. Calculate the shortest distance to measure the radius when in a Geofencing area using the Haversine method, and for data collection, use observation and interview methods. The results of the research carried out were implementing geofencing area technology at the Manado State Polytechnic Campus. Sixty students tested this application for 14 days by using the application with different cellular network operators. Users will receive a notification when they are in a certain area for 5 - 10 seconds. Therefore, the system testing results show that the Polimdo Geofence application is feasible and can be used to determine the user^s position. Keywords: Geofence, Polimdo, PHP, MySql, Haversine. Share Link | Plain Format | Corresponding Author (Jeanely Rangkang)

68	Digital Industry 4.0	ABS-122
Analysis of Student Leave Submission System Based on Cloud Server at Manado State Polytechnic Anthoinete Waroh, Sulastri Eksan, Ottopianus Melolo, Eliezer Rongre Politeknik Negeri Manado Abstract Currently, Manado State Polytechnic has several information systems that are intended to improve operational service activities, such as the Polimdo Website, SIM Polimdo, P3M Polimdo and P4M Polimdo, SimPeg, SPMB Polimdo. All of these systems run well according to their respective functions. However, there are still several units whose activities are still carried out manually or still need to be systematic, so they require a lot of time to manage. One of them is the student leave application activity. Therefore, the author designed and created a student leave application system to facilitate employees and students. This system uses the PHP programming language and MySQL Query. In the final testing stage, the author used the black box method to test software functionality and the cloud server to determine whether the system was suitable. In the black box test results, all functions ran well, and in the server test, the total request was 44,570, the server was still detected typically, and there was no failure/error report. Keywords: Student Leave, PHP, MySQL, Cloud Server, Manado State Polytechnic. Share Link | Plain Format | Corresponding Author (Anthoinete Waroh)

69	Digital Industry 4.0	ABS-136
Online Monitoring and Control of Grounding Resistance Using Grid Electrodes for Enhanced System Quality Nuha Nadhiroh, Isdawimah, Arum Kusuma Wardhany, Gilang Maulana Iskandar, Muhammad Fitra Juliansyah, Imam Mashudi Electrical Engineering Department of Politeknik Negeri Jakarta Mechanical Engineering Department of Politeknik Negeri Malang Abstract The performance of the grounding system is strongly influenced by soil moisture, which is directly related to soil specific gravity. Changes in the moisture content of the soil will affect the size of the soil specific resistance, so the performance of the earthing system is also affected by the season. In the rainy season, the soil resistance is generally within the desired limits, but in the dry season, the resistance tends to increase. This research develops a system that uses a microcontroller as the main controller and the 3-pole-fall-of-potential method to measure earth resistance. The test was conducted by comparing the resistance measurement results between Earth Tester and the designed system, and analyzing the effect of adding water to the resistance. The system is integrated with Google Spreadsheet HTTP Server through ESP32 microcontroller and various sensors, allowing real-time monitoring of resistance. Kodular application is used as the monitoring software. The results show that the developed system has a measurement accuracy of 92.79%, with an error rate of 7.21% and a resistance measurement difference of 0.20 Ohm. The addition of water as a control variable proved effective in reducing the earthing resistance by about 3%. In addition, the fastest data transmission time was recorded at 9.04 seconds, while the longest time reached 25 seconds. Thus, the system is capable of monitoring and controlling earthing resistance with sufficient accuracy and in accordance with applicable safety standards. The system also proved effective in recording data in the Google Spreadsheet data logger, which is expected to reduce the risk of increased resistance in the earthing system, supporting more reliable and safe operations. Keywords: control and monitoring, grid electrode, grounding resistance, IoT Share Link | Plain Format | Corresponding Author (Nuha Nadhiroh)

70	Digital Industry 4.0	ABS-147
DEVELOPMENT OF A TRACEABILITY SYSTEM FOR THE SUPPLY CHAIN OF FROZEN FOOD PRODUCTS THROUGH ANDROID APPLICATIONSAbstract Syamsurizal, Arizal Putra Pratama, Yanita Ella Nila Chandra Politeknik Negeri Jakarta Abstract This study discusses the problems that exist in the community, especially for SMEs in the fishing industry. The problem is the availability of valid, transparent, and balanced information so the stakeholders such as consumers or exporters can track (forward) the whereabouts of the position of goods through a smartphone installed with the Android application. Furthermore, a tracing (backward) process is needed to ensure the quality of the goods that arrive in the hands of consumers. The quality of goods is very important, especially for perishable goods. This is because in the process of transporting frozen food, in this case tilapia and gourami, they require a transportation process using a cold chain system that can be monitored through the application. So which parties do not apply clear procedures, or SOPs, can be known through the information system. The goal is customer satisfaction with the quality of goods and delivery information. The urgency of this research is the need for an information system for stakeholders (parties in the supply chain) that is valid, transparent, and uses the latest technology, namely blockchain. Supply chain processes are the daily operations of the company and are routine and repetitive activities, so it is important that these activities run as effectively and efficiently as possible. The use of big data, AI, and automation so far has not been effective because each actor uses their own database Keywords: Please Just Android, Frozen Food, supply chain traceabilityTry to Submit This Sample Abstract Share Link | Plain Format | Corresponding Author (Syamsurizal Ibrahim)

71	Digital Industry 4.0	ABS-148
Comparative Examination of the Efficacy of Gold in Relation to Bitcoin Cryptocurrency as a Viable Investment Alternative Riskon Ginting, Ratri Kurniasari, Yanita Ella Nilla Chandra Politeknik Negeri Jakarta Abstract The escalation of investment interest during the economic turmoil precipitated by Covid-19 necessitates a more judicious approach from investors in selecting investment instruments. The consistent appreciation in the value of gold, coupled with the rapid ascent in the valuation of Bitcoin amidst market disruptions, serves as the rationale for the selection of these two instruments as viable alternative investments. This research endeavors to investigate which investment vehicles, specifically gold and Bitcoin, exhibit the highest and lowest volatility during periods of crisis, to identify the optimal univariate ARCH-GARCH model, to conduct a time-varying volatility assessment, and to examine the disparities in volatility across pre-crisis, crisis, and post-crisis periods. This inquiry adopts a descriptive quantitative research methodology, wherein the selection of samples is based on periodic data evaluated on a daily basis. The analytical framework employed in this investigation comprises descriptive statistical analysis alongside time series analysis, utilizing a dataset that encompasses 2922 observations of gold and Bitcoin returns spanning from June 2019 to May 2023. The findings of this investigation reveal that Bitcoin represents the investment instrument with the highest volatility, whereas gold demonstrates the least volatility. The most suitable model for characterizing the volatility of gold and Bitcoin during periods of crisis is identified as GARCH (1,1). The volatility exhibited by both gold and Bitcoin during the Covid-19 crisis is characterized by temporal variability. The distinctions in volatility observed between pre-crisis, during crisis, and post-crisis periods are evidenced by the presence of asymmetric effects. Keywords: Please Just Try to Submit This Sample Abstract Share Link | Plain Format | Corresponding Author (Riskon Ginting)

72	Digital Industry 4.0	ABS-155
Navigating Consumer Behavior through Digital Marketing: A Study on Tokopedia in the Industry 4.0 Era Bela Barus (a*), Surahman Surahman (a), Amanda Putri Salsabila (b), Sugeng Hariyadi (a), Armini Ningsih (b), Anggun Regeta Sari (a), Panggih Nugroho (b) a). Marketing, Innovation and Technology Department Politeknik Negeri Samarinda *surahman[at]polnes.ac.id *sugenghariyadi[at]polnes.ac.id b). Marketing Management Department Politeknik Negeri Samarinda *amandaputrisalsabilaa[at]gmail.com Abstract This study aims to understand how the influence of digital marketing such as Content Marketing, Influencer Marketing, Sales Promotion and Social Media Marketing and Electronic Word of Mouth has an impact on Purchasing Decisions using the Tokopedia application. This research also explores the moderating role of Customer Engagement and Purchase Intention. This research uses the Structural Equation Modelling (SEM) method. The total sample in this study was 190 respondents using the Simple Random Sampling technique. The complete collected data was analysed using AMOS Analysis of Moment Structure software for hypothesis testing. The results of hypothesis testing obtained are Content Marketing, Influencer Marketing, and Social Media Marketing and Electronic Word of Mouth have a positive and significant effect on Customer Engagement. Content Marketing, Social Media Marketing and Electronic Word of Mouth have a positive and significant effect on Purchase Intention, then Content Marketing and Social Media Marketing have a positive and significant effect on Purchase Decision. The results of this study state that Tokopedia must maintain its Content Marketing and Social Media Marketing strategies. Keywords: Content Marketing, Influencer Marketing, Sales Promotion, Social Media Marketing, Electronic Word of Mouth, Customer Engagement, Purchase Intention, Purchase Decision Share Link | Plain Format | Corresponding Author (Surahman Surahman)

73	Digital Industry 4.0	ABS-156
Implementation of SCADA-IoT on the Dual Conveyor Plant for Separating Metal and Non-Metal Materials Murie Dwiyaniti, Hatib Setiana, Arum Kusuma Wardhani, Reyhan Oliviera Panduwinata, Muhamad Ramadhifan Baiqi, Muvitto Ramadhanu Hascal Program Study of Industrial Electrical Automation Engineering, Department of Electrical Engineering, Politeknik Negeri Jakarta, Jl Prof Dr.GA Siwabessy, Depok, Indonesia Abstract The primary challenge in the utilization of Dual Conveyor Plant lies in the accuracy and efficiency of separating metal and non-metal materials, which are influenced by variations in characteristics such as size, shape, and composition. Other challenges include managing material buildup and preventing component damage due to overloading or improper separation. Without adequate supervision and monitoring, separation errors can reduce production quality and increase operational costs. This research proposes the implementation of SCADA-IoT for real-time control, monitoring, and cost-effective data collection. The use of a Siemens S7-200 PLC connected to SCADA-IoT Haiwell via Ethernet and smartphones through Wi-Fi (internet network) demonstrates the effectiveness of the system. The SCADA-IoT interface on the HMI and smartphones reflects the actual plant, facilitating monitoring and control. Testing confirmed that the system works well in material separation, with a stable connection between the PLC and SCADA-IoT. The 4G signal performance demonstrated a download, upload, and delay time of around 0.87 seconds, making it reliable for remote operations of the dual conveyor plant. Conversely, the EDGE signal performed poorly with an average download speed of 0.19 Mbps, an upload speed of 0.12 Mbps, and an average delay time of 3.67 seconds, making it unsuitable for remote operation of the dual conveyor plant. Keywords: PLC- SCADA- IoT- dual conveyor- Share Link | Plain Format | Corresponding Author (Murie Dwiyaniti)

74	Digital Industry 4.0	ABS-159
Path Analysis of E-Service Quality and Customer Relationship Management on Shopee User Satisfaction in Digital Industry 4.0 Surahman Surahman 1*), Prapdopo Prapdopo 2) , Indri Adetya Putri 2) , Mohammad Kiswanto 2), Armini Ningsih 2), Lanang F. Syawal 2) 1 Marketing, Innovation and Technology Study Program in Polytechnic State of Samarinda 2 Marketing Management Study Program in Polytechnic State of Samarinda *Corresponding author: surahman[at]polnes.ac.id Abstract This study was to analyze and to prove the impact of electronic service quality, interface qulaity, electronic customer relationship management, system quality, electronic promotion on electronic satisfaction, electronic trust, electronic loyalty of online shopping shopee users in indoneisa. This study uses a questionnaire with a sample 190 Shopee users in Samarinda. This study uses a quatitative approach with path analysis processed with IBM SPSS Statistic software and Structural Equation Modelling with AMOSsoftware. Data from respondents (primary data) is then tabulated and tested using statistical methods. Data were collected using a research tool (questionnaire). This study use accidental random sampling technique. The measurments are scored by likkert scale with score of 1-5. From test result, all research statement instruments were declared valid and declared reliable. Based on the structure of the model, it can be proven that there is a significant influence between the variables electronic service quality, interface quality, system quality, electronic promotion on electronic satisfaction- electronic service quality, interface quality, electronic customer relationship management, system quality, electronic promotion on electronic trust- electronic satisfaction on electronic trust- electronic satisfaction, electronic trust n electronic loyalty. Keywords: electronic service quality, electronic satisfaction, electronic trust, electronic loyalty Share Link | Plain Format | Corresponding Author (Surahman Surahman)

75	Digital Industry 4.0	ABS-161
Examining the Effects of Digital Content Strategies on Consumer Post Purchase Behavior: Evidence from The Originote Skincare Users in Indonesia Prapdopo , Surahman , Sofi Nurfadilla , Sarwo Eddy Wibowo , Christie Stephanie Piar Politeknik Negeri Samarinda Abstract This study aims to determine what influence marketing content such as user generated content, firm created content and influencer generated content has on post purchase behavior towards the use of The Originote skincare. This study uses the role of perceived value, perceived credibility and purchase decision as intervening variables whether it will show a significant effect on post purchase behavior. This research uses the Structural Equation Modeling method using SPSS and AMOS software. The number of samples in this study were 190 participants in Indonesia using random sampling techniques. The results of this study indicate that there are 9 accepted hypotheses, namely user generated content on perceived value, firm created content on perceived value, influencer generated content on perceived value, user generated content on perceived credibility, perceived value on perceived credibility, perceived credibility on purchase decision, purchase decision on post purchase behavior and influencer generated content on perceived credibility. Also, there are 5 hypotheses denied or rejected such are firm created content on perceived credibility, influencer generated content on perceived credibility, perceived value on purchase decision, user generated content on purchase decision and firm created content on purchase decision Keywords: User Generated Content, Firm Created Content, Influencer Generated Content, Perceived Value, Perceived Credibility, Purchase Decision, Post Purchase Behavior, skincare, The Originote. Share Link | Plain Format | Corresponding Author (Prapdopo Prapdopo)

76	Digital Industry 4.0	ABS-164
Implementation Of Corexy Mechanism on Large Format 3D Printer to Optimize Print Time Effectiveness Dirvi Eko Juliando Sudirman, Rendi Pambudi Wicaksono, Andhika Putra Widyadharma Please Just Try to Submit This Sample Abstract You Can Edit It Again Later Abstract In the past few decades, 3D Printer technology has seen significant advancements, changing the paradigm of manufacturing processes and creativity. One of the biggest challenges that the 3D Printer world continues to face is the size of prints that can be produced. Larger print sizes allow objects to be printed without dividing them into smaller components, thus improving production efficiency and the quality of the final object. The coreXY drive mechanism is applied to the large format 3D printer made in this research, due to the fact that it can produce faster movements than the typical cartesian. The two motors used to move in the horizontal plane are stationary and do not have to move on their own, resulting in less moving mass. It is possible to print at high speed while maintaining the quality of the prints. A Comparison of the printing speed and quality of this machine with 3D printers available in the market, resulting in a higher printing speed of 75% with equivalent printing quality. Printing tests on each side of the print area that has a size of 50cm x 50cm show good results with the same quality, which proves that the large format 3D printer machine that has been made can work well. Keywords: 3D Printer, CoreXY, Printing Speed, Printing Quality Share Link | Plain Format | Corresponding Author (Rendi Pambudi Wicaksono)

77	Digital Industry 4.0	ABS-171
Digital Registration Innovation in E-government as Embodiment of Smart Society Concept Almasari Aksenta, Omar Dhanny, Umi Zunaidah, Yiska Tangilallo Samarinda State Polytechnic Abstract The rampant misuse of the internet and digital technology in Indonesia. The Indonesian Ministry of Communication and Information provides routine activities in the form of digital literacy. The government has created a special e-government platform for digital literacy that can be accessed by all groups from anywhere. The dense community activities and time constraints, the government created an online registration system. Targets and sustainability factors are things that must be considered so that the e-government that is created can present continuous activities and show the amount of user data. Researchers are interested in taking this object because its own uniqueness and becomes an innovation in the study of e-government model development. The innovation analyzed is that this platform has an event registration process using barcode scanning and there is a user classification to participate in the digital literacy events held. The use of related digital technology and the involvement of many people who use it, this supports a new concept, namely Smart Society. Smart Society is one dimension of a smart city where there is innovation and sustainability through interactive education, community participation and the use of information technology. The purpose of this study is as a study of the development of an e-government model with innovation from an online registration system as a manifestation of the concept of a smart society. This study is presented with a qualitative descriptive analysis method, namely using a literature review taken from journals, books and articles on the website. There is also a discussion of e-government with a case study of the Pandu Digital website after conducting system testing with the Black Box Testing method. The results of this study are in the form of study materials and discussions about the innovation of the registration system in the Pandu Digital e-government which is connected to the concept of realizing a smart society. Keywords: E-government, E-Registration, Smart Society, Smart People, Smart City Share Link | Plain Format | Corresponding Author (Almasari Aksenta)

78	Digital Industry 4.0	ABS-183
Square Diagonal Slit Array Microstrip Antenna to Support The 5th Generation Telecommunications Industry in Indonesia Budi Aswoyo Politeknik Elektronika Negeri Surabaya Abstract This paper presents the design and realization a square diagonal slit array microstrip antenna with 4x4 elements operates on a frequency of 2.3 GHz, to be exact at 2.345 GHz for 5G communication in Indonesia. Antenna material use: PCB FR-4 Epoxy, in which there is a dielectric substrate with dielectric constant (&#949-r = 4.75, tan = 0.02), height h = 1.6 mm. This antenna is designed to have a gain greater than 5 dBi. In the antenna design study, the first is one element microstrip patch antenna design, then a 2x2 array elements, and then a 4x4 array elements. The finally result, the antenna gain is 7.14 dBi. The antenna simulation design process using CST Microwave Studio. Based on the design results above, the microstrip square patch array antenna with 4x4 elements is fabricated into a prototype and its characteristic size in the anechoic space. Then measurement results are analyzed and compared with simulation results. Based on the results of the simulation design square microstrip patch array antenna with 4x4 elements for center frequency of 2.345 GHz, it is found that S11 of -16.40 dB or 1.36 VSWR with 54.6 MHz bandwidth, and gain of 7.14 dBi. Meanwhile, from the measurement results from the prototype of antenna obtained S11 of -14.85 dB or VSWR 1.62 with a bandwidth of 67.5 MHz, and a gain of 6.86 dBi. This antenna is expected to be used as a alternative antenna for 5G communication in Indonesia at 2.3 GHz (S band) with gain above 5 dBi. Keywords: Microtrip Antenna, 5th G Telecommunication Share Link | Plain Format | Corresponding Author (Budi Aswoyo)

79	Digital Industry 4.0	ABS-185
Design and Implementation of 4G LTE Network on 1800 MHz Frequency Using Outdoor LTE-A Modem for Bad Coverage Siska Aulia, Ideva Gaputra, Sri Yusnita, Dewi Sartika Politeknik Negeri Padang Abstract Rapid advances in telecommunications systems are enabling people to enjoy various communication and information technologies. However, network service providers face challenges in maintaining and improving service quality, especially in terms of network coverage and quality in different regions. The solution to overcome poor coverage is to use an LTE-A signal amplifier. Signal amplification is in line with the need for Internet access speed. LTE-A technology offers a solution with many benefits for users and mobile operators. This study aims to design and implement improvements in the coverage and quality of the 4G LTE network in the suburban area of Kurao with an Outdoor Modem Mikrotik LTE-A Router. The addition of an outdoor modem signal booster plays a role in improving network performance without adding physical infrastructure, making it more efficient in terms of operational costs. Based on the results of the RF KPI measurements, the RSRP value increased from -107 dBm to -79 dB with the addition of the LTE-A Router outdoor modem. Similarly, the RSSI dropped from -76 dBm to -49 dBm. However, the RSRQ parameter remains in a fairly good indicator, which is less than -10 dB. For QoS measurement on QHD streaming with PTZ camera, the value meets very good standards for user experience KPI, namely packet loss, delay and jitter. And the bandwidth parameter has increased, the download bandwidth is 63.11 Mbps and the upload bandwidth is 31.58 Mbps Keywords: 4G LTE, RSRP, RSSI, RSRQ, Throughput, QoS Share Link | Plain Format | Corresponding Author (Siska Aulia)

80	Digital Industry 4.0	ABS-194
Hajj Simulation Learning Application based on User Centered Design and Gamification Approach Andhik Ampuh Yunanto, Fadilah Fahrul Hardiansyah, Siska Arifiani, Darlis Herumurti, Imam Kuswardayan, Vika Fitratunnany Insanittaqwa Politeknik Elektronika Negeri Surabaya, Institut Teknologi Sepuluh Nopember Abstract ^Play is the original method of learning,^ as noted by game practitioner and author of Digital Game-Based Learning, Danny Hillis. Playing serves as one of the most fundamental and straightforward ways for individuals to acquire new knowledge, as it involves learning in a joyful and stress-free environment. Such conditions are often rare in formal educational settings like schools, where students may absorb only a small portion of the material. This contrasts with the learning process facilitated by games or simulation, which can help individuals grasp and understand new concepts, particularly when the games have educational value. Marc Prensky suggests that games can tap into emotional aspects, allowing individuals to absorb more information through play. With all these things in mind, games simulation can be great learning tools for people of any age when it comes to the learning process and the benefits that come from said learning. The number of Hajj pilgrims even easier with increasing interest in learning how to perform the correct Hajj decent. Since more people are starting to learn about Hajj, educational resources like books, online articles and e-books increase the readership. The Hajj Simulation Learning is an innovative learning tool developed to provide interactive and attractive tutorial on correct Hajj rituals. It uses Ren^Py technology and Ren^Py Android Packaging Tool (RAPT) for Android build. Every year, the number of Android-based applications are growing at a larger scale. The growth is also fuelled by the proliferation of Android-based mobile devices. Survey results also show a lack of similar current applications like the Hajj Simulation Game. The number this year alone has increased by two, with that annual trend continues to rise, the creation of a new simulation game in the spirit of apps could set an educational simulation game genre on how to perform Hajj. From the test results, the Hajj learning application received feedback above 3.3 from Keywords: Hajj Simulation, Game based Application, Gamification, UX Design Share Link | Plain Format | Corresponding Author (Andhik Ampuh Yunanto)

81	Digital Industry 4.0	ABS-212
Effectiveness of Stone Column Reinforcement in Flexible Pavements on Soft Clays Reviewed from Structural Analysis Using Plaxis 3D Software Pita U. A. W. P.1, b), Syahril S.1, a), Indra N. H.2, c) 1Master Study Program of Applied Infrastructure, Civil Engineering Department, Bandung State of Polytechnic, Bandung, West Java, Indonesia 2Department of Civil Engineering, Institute of Technology National, Bandung, West Java, Indonesia Author Emails a) Corresponding author: syahril_polban[at]yahoo.com b) pitaarthapanjaitan[at]gmail.com c) indranh[at]itenas.ac.id Abstract Flexible pavements on soft clay soils often cause many problems, such as the occurrence of soil settlement under the pavement caused by traffic loads and the length of time for soil consolidation. Thus, if a pavement is to be built on soft clay, the construction process must be carried out after the soil has fully consolidated to avoid settlement and ensure that the bearing capacity of the pavement is feasible. One method that can be used to strengthen soft clay is the stone column. To determine the effective stone column design, an analysis of the stone column, soft clay soil, and the pavement structure itself. The must-be-analyzed study was conducted using Plaxis 3D software. This research also planned the flexible pavement design using the Manual of Pavement Design (MDP) method Bina Marga 2024. This research aims to obtain the safety factor value, displacement value, and the design of stone column (SC) diameter and spacing that efficiently reduces the displacement value due to the traffic load acting on the flexible pavement. The optimum design of stone column was obtained by combining 0.8 m diameter and 1.7 m spacing. Stone column 0.8 m with 1.7 m spacing can increase the safety factor value by 28.44%, reduce the displacement values Ux and Uz by 38.46% and 50.27%, respectively, and the displacement value Uy by 4.27 cm. Keywords: Plaxis 3D, stone column, flexible pavement, safety factor, displacement Share Link | Plain Format | Corresponding Author (Pita Uli Artha Wijaya Panjaitan)

82	Digital Industry 4.0	ABS-228
PID Control System for Shaking Table and Bearing Capacity Measurement on Soil Liquefaction Simulator Agung Sanubari, Firly Nuraulia Rahmah, Sulis Setiowati, A^isyah Salimah,Yelvi Politeknik Negeri Jakarta Abstract Liquefaction occurs when soil that was previously stable and solid suddenly loses its strength and stiffness within a short period. This research develops a model for testing soil liquefaction using a 1-g shaking table. The system, based on LabVIEW, is designed to measure and analyze the performance of foundations during soil liquefaction tests. It enables the evaluation of soil characteristics before, during, and after an earthquake that could induce liquefaction, while also considering foundation reinforcement. In this study, the Ziegler-Nichols PID tuning method was employed to improve control accuracy and stability during seismic vibration simulations and to measure soil bearing capacity. The results indicate that the system achieved a rise time of 8 seconds, a delay time of 13 seconds, an overshoot of 0.06%, a settling time of 13 seconds, and a steady-state error of 0.02%. Compared to the Trial Error method, the Ziegler-Nichols method achieves faster rise time, delay time, and settling time but results in higher overshoot and steady-state error. The sensor data provides detailed information about the helical pile^s ability to support vertical loads, with an average bearing capacity of 3.99 kPa. Keywords: Soil liquefaction, LabVIEW, PID control, Shaking Table, Helical Pile Share Link | Plain Format | Corresponding Author (Sulis Setiowati)

83	Digital Industry 4.0	ABS-234
A Bibliometric Exploration of Influencer Marketing^s Rise in the Fashion World Renita Kawuryan, Hamdani, Satryawati, Fauziah Lily Anggraeni, Salsabila Alya Rahma Putri Politeknik Negeri Samarinda Abstract Influencer marketing has become a pivotal strategy for fashion brands, leveraging the extensive reach and credibility of social media influencers to shape consumer behavior, drive brand loyalty, and boost sales. This study examines the role of influencer marketing within the fashion industry, focusing on its impact on consumer decision making, the importance of authenticity and trust, then the challenges faced by influencers and brands. The analysis utilized data from the Web of Science database, covering research publications from 2015 to 2024. A systematic review of 153 relevant articles was performed using bibliometric tools, including Biblioshiny in R studio and VOSviewer, to identify key themes, influential authors, and emerging trends in the field. Key factors such as authenticity, trust, and the parasocial relationships between influencers and followers are identified as central to successful campaigns. Despite substantial growth, research gaps remain, particularly regarding the influence of micro and nano influencers, cross cultural variations and the impact of AI-driven virtual influencers. Through a bibliometric analysis of existing literature, this paper identifies research trends, key contributors, and future directions for the field. Keywords: Influencer marketing, Fashion industry, Bibliometric analysis, Biblioshiny, VOSviewer Share Link | Plain Format | Corresponding Author (Renita Kawuryan)

84	Digital Industry 4.0	ABS-243
RIDA-M: SIGNAL CHANNELIZATION MANAGEMENT OF COMMAND RESPONSE DATA STATUS USING ROW INDEX DATA ACCESS MATRIX TECHNIQUE Rida Hudaya(a*), Trisno Yuwono Putro(a), Muhamad Rafhi Rihadatus Syawal(a), Julian Harith Al Banny Hudaya(a) a) Electrical Electronic Engineering, Politeknik Negeri Bandung, Jl. Gegerkalong Hilir, Ciwaruga, Kec. Parongpong, Kabupaten Bandung Barat, Jawa Barat, Kode Pos 40559, Kotak Pos Bandung 1234 Abstract This article explores the application of the rida-M (Row Index Data Acces Matrix) technique in processing command, response, data, and status signals within Embedded Systems. The rida-M Processor acts as a data bridge, enabling seamless data transfer between different embedded systems, regardless of protocol similarities or differences. The rida-M technique offers significant advantages in signal management within embedded systems, particularly in industrial settings where diverse protocols and data types are prevalent. This approach not only streamlines the design and implementation process but also enhances system flexibility and maintainability. The rida-M technique works by mapping various signals into an indexed row matrix to facilitates efficient communication and data exchange across various embedded systems, potentially improving overall system performance and reducing integration challenges. The rida-M technique was originally developed for input or output homogeneous signals only. It was later developed for heterogeneous signals. However, this article will describe the development of the rda-M technique for signals with random direction and type through the management of a standalone embedded system. The rida-M technique demonstrates several noteworthy characteristics. Its instruction lines increase almost linearly with the number of signals it manages, while maintaining a relatively constant level of management complexity. Beyond its primary function as a communication facilitator, the rida-M technique serves as a universal data bridge, enabling smooth integration between older systems and cutting-edge technologies, thus ensuring uninterrupted industrial operations. This adaptability can result in significant cost reductions by eliminating the need for multiple specialized interfaces or comprehensive system upgrades. Moreover, the linear correlation between managed signals and instruction lines, combined with consistent management difficulty, indicates that the rida-M approach can efficiently scale to accommodate increasingly sophisticated embedded systems without a corresponding rise in operational complexity. Keywords: Data Bridge, Embedded Systems, Rida-M, Signal Management, Signal Mapping Share Link | Plain Format | Corresponding Author (Rida Hudaya)

85	Energy engineering	ABS-260
Design and Development of a Thrust and Moment Meter for Small UAV Propellers Singgih Satrio Wibowo, Maria Fransisca Soetanto, Muhammad Rizki Zuhri, Citra Asti Rosalia, Ratu Fenny Muldiani, Hashri Hayati Politeknik Negeri Bandung Abstract Thrust and Moment Meter (TMM) is a tool or an instrument for measuring thrust and moment (or torque) produced by a small electric propulsion system, which is usually used on Unmanned Aerial Vehicles (UAV) and/or Small size Radio Control (RC) aircraft. This tool is designed with low cost materials and simple process, namely Acrylonitrile Butadiene Styrene (ABS) plastic using 3D printing technology. The main component of this device is an Arduino Nano microcontroller, equipped with three Load Cell sensors and one LCD screen. The results of this research are that the TMM tool has been successfully created and tested for accuracy in several cases, and very good results were obtained where the force measurement accuracy was more than 99% (error < 1%) Keywords: Thrust, Moment, Propeller, Arduino, Load Cell Share Link | Plain Format | Corresponding Author (Singgih Satrio Wibowo)

86	Energy engineering	ABS-11
Analysis of Fuel Salt Relocation from the Reactor Vessel to the Drain Tank in Molten Salt Reactor (MSR) with Moving Particle Semi-Implicit (MPS) Method Aziz Satrio, Muhamad Daffa Fawwaz, Yulia Mifftah Huljanah, Asril Pramutadi Andi Mustari Bandung Institute of Technology Abstract The Molten Salt Reactor (MSR) is a fourth-generation reactor whose technology has been proven by MSRE^s operations at ORNL. This reactor has a highly inherent safety system. Then, it has ability to extinguish multiple reactors and is carried out passively. Fuel salt in MSR can flow to drain tank by opening melt valve when temperature exceeds the limit. Understanding relocation of fuel salt is essential to improve reactor safety and performance. In this study, we present a particle-based approach using the Moving Particle Semi-Implicit (MPS) method, which represents fluid as particles that carry physical properties. We analysed the dynamics of several types of fuel salt at MSR. The fuel salt variations tested were LiF-NaF-KF, LiF-BeF2, KCl-MgCl2, and NaNO3-NaNO2-KNO3. In addition, temperature variations of 700K, 850K, and 950K were carried out on LiF-NaF-KF. The simulation uses the 2D geometry of MSRE reactor design. This simulation results show that NaNO3-NaNO2-KNO3 has movement with the greatest speed compared to other fuel salt. At 950K for LiF-NaF-KF has the greatest velocity compared to other variations. These results can be taken into account in selection of right saline fuel mixture and the understanding of its flow characteristics for safe and effective MSR operation, which is crucial for improving the safety of nuclear reactors. Keywords: Drain Tank, Fuel Salt, MPS method, MSR Share Link | Plain Format | Corresponding Author (Yulia Mifftah Huljanah)

87	Energy engineering	ABS-29
Development and Implementation of an Accelerated Thermal Aging Chamber with Immersion Heater for Evaluating the Performance of Transformer Insulation Systems siti saodah, bella eliana Politeknik Negeri Bandung Abstract Transformers are essential equipment in electric power transmission that use various insulating materials such as mineral oil and cellulose paper to protect the induction process. The insulation system in transformers is often exposed to mechanical, electrical, and thermal stresses affecting the overall condition of the transformer. Aging of the insulation system is caused by increased water content, temperature, and oxidation processes. Thermal stress is the primary factor causing the degradation of the insulation system. Therefore, it is necessary to conduct performance evaluation tests of insulation materials on a laboratory scale before being directly applied to transformers. One evaluation method is accelerated thermal aging testing. This study aims to develop an Accelerated Thermal Aging Chamber with an immersion heater to evaluate the performance of transformer insulation systems according to IEC and IEEE standards. Unlike previous studies that used ovens, this Thermal Aging Chamber simulates the environment of power transformers to heat the insulation system. It is expected that the developed test cell can simulate the transformer life cycle in an accelerated manner and allow performance evaluation of the insulation system to be conducted in the laboratory Keywords: Accelerated Thermal Aging Chamber, Accelerated Thermal Aging Test, Insulation System, Thermal Stress, Transformer Share Link | Plain Format | Corresponding Author (Siti Saodah)

88	Energy engineering	ABS-53
Engine Performance Gap Analysis during Sea Trial Testing Compared to Engine Technical Data Specifications Mohammad Abu Jamiin1, a), Anggara Trisna Nugraha1, Afif Zuhri Arfianto1, Dimas Pristovani Riananda1, Urip Mudjiono1, Rachmad Tri Soelistijono1, Muhammad Taufiqurrohman2, Arif Winarno2 and Bambang Wahono3 1Politeknik Perkapalan Negeri Surabaya, Jalan Teknik Kimia Kampus ITS Sukolilo Surabaya, 60111, Indonesia 2Fakultas Teknik dan Ilmu Kelautan Hang Tuah University Surabaya, Fakultas Teknik dan Ilmu Kelautan (FTIK) Hang Tuah University, Jl. Arif Rahman Hakim 150 Surabaya, 60111, Indonesia. 3 Research Center for Smart Mechatronics National Research and Innovation Agency (BRIN), KST Samaun Samadikun Jalan Sangkuriang, Bandung, Indonesia 40135 Abstract In this paper, we would like to discuss how to assess the performance of the main engine test during the sea trial based on the performance stated in the technical data. Raw data is measured and recorded during sea trial that reflect to the parameters of main engine performance. However, the raw data still need to be managed in order to get the information about the condition of engine performance. To conclude whether the ships sea trial results meet the performance standards stated in the engine technical data or engine certificate, the raw data needs to be converted into performance graphs with engine performance according to the technical data standards. From this comparison, the deviation between the performance of the sea trial test results and its specification standards can be seen. The results of this work can help ship surveyors assess the comparative performance of the main engine based on the results of ship sea trial measurements Keywords: seatrial tests, engine performance, power speed engine, mean effective pressure, specific fuel oil consumption Share Link | Plain Format | Corresponding Author (Mohammad Abu Jamiin)

89	Energy engineering	ABS-62
PT. PUPUK KALTIM POWER FACTOR IMPROVEMENT WITH CAPACITOR MULTITUDE Rizky Aprylianto Susilo, Tabah Tri Ananto, Khairuddin Karim Polytechnic State of Samarinda Abstract In the electricity system, the efficient use of electricity is one of the important aspects of energy management that focuses on the optimal use of electrical energy to reduce energy waste and improve system performance efficiency. Good efficiency in the use of electricity can provide many benefits including reduced operating costs, increased reliability of the electricity system, and increased company productivity. This research discusses the study of capacitor multitude installation for power factor improvement located at PT Pupuk Kalitm, Bontang city, East Kalimantan province. The power system will be installed capacitor multitude as an effort to improve the power factor. This equipment is expected to be able to make an increase in cos phi on the factory 7 power grid. The results of this research show reactive power of 460.13 kvar to increase cos phi which was originally 0.87 to 0.97. The simulation results obtained are the cos phi value of 0.8 and after the installation of the capacitor multitude rises to 0.97. The delta circuit has a lower current value than the star circuit. Keywords: Power System, Power Factor, Improvement, Capacitor Multitude, Motor Share Link | Plain Format | Corresponding Author (Rizky Aprylianto Susilo)

90	Energy engineering	ABS-88
Optimal Green Power Expansion Plant for Sustainable Dynamic Electricity Demand Conny K. Wachjoe, Hermagasantos Zein, Yanti Suprianti, Bella Eliana Bandung State Polytechnic Abstract The growing need for electricity is prompting the expansion of generation capacity. To plan effectively, understanding the current supply capacity and potential growth of power generation technologies is crucial. When it comes to the growth of green power generation technologies, the electricity they produce requires reinvestment for building new power plants, not just to meet demand. This framework proposes the use of dynamic energy demand analysis to examine capacity expansion, LOLP-based load growth potential, and energy dynamics of six clean technologies (solar photovoltaic, wind, hydro, biomass, and natural gas). The power adequacy study focuses on assessing the reliability of generator units to meet future system load demands. The reliability index is measured using the Loss of Load Probability (LOLP) calculated through the Fourier Transform Method, and the LDC is approximated by a fifth-power polynomial function. The simulation results for the power generation system expansion on Lombok Island, Indonesia, suggest a shift from fossil-based plants to NRE-based plants, with NRE contributing 79% of the energy production. Natural gas, a clean energy source replacing fuel oil, still accounts for a substantial 21%. Additionally, solar and wind power plants each contribute 29%, while biomass-based power plants contribute 20%. When a Loss of Load LOLP of 10% is applied, the calculation results range from 0.472 to 0.897 days per year, demonstrating an excellent level of reliability. Keywords: expansion plan, green power, NRE, reliability LOLP. Share Link | Plain Format | Corresponding Author (Conny K. Wachjoe)

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