All of the articles in this proceedings volume have been presented at the International Conference on Applied Science and Technology - Engineering Science (iCAST-ES) on 10-11 October 2025 in Politeknik Negeri Bali. These articles have been peer reviewed by the members of the Indonesian Society of Applied...

The challenges in estimating the process and the cost of road and highway construction projects in Metro Manila, which is plagued by extreme traffic congestion and inadequate road quality, are the subject of this study. Due to their inability to take into account the particular unpredictability of each...

The implementation of natural dehumidifiers in agricultural drying systems presents a promising approach to enhance energy efficiency and product quality. This study investigates the effectiveness of natural dehumidifier placement in a multi-rack turmeric drying cabinet, comparing three configurations:...

Flouring is one of the important stages in the processing of agricultural products in the post-harvest processing industry. One of the machines that is often used for the flouring process is a hammer mill model flouring machine. The performance of this machine is often needed for various work variations,...

Manual essay assessment in educational environments is often time-consuming, labor-intensive, and prone to subjective judgment. This study aims to develop a web-based automatic essay scoring system using the Laravel framework integrated with the OpenAI API. The system is designed to assist lecturers...

This study presents the construction of a multimodal dataset designed to detect online gambling advertisement infiltrations on websites. The dataset incorporates both visual (image-based) and textual data extracted from compromised web pages. Data collection begins with a Google Engine Scraper that utilizes...

The distribution of electrical energies has grown the economy, social, and education, so the reliability is very important, the grounding resistance that is lower than 5 ohms is required for the low voltage distribution system according to PLN standards. The Bali State Polytechnic Electrical Workshop,...

This study presents a comprehensive analysis of the generative artificial intelligence research landscape during the transformative period of 2023-2024. Using BERTopic, we analyzed 1,314 scholarly articles retrieved from the Scopus database to identify thematic clusters and temporal evolution patterns....

This research presents a systematic literature review (SLR) and bibliometric analysis to examine how artificial intelligence (AI) determinants are conceptualised, implemented, and evaluated in public sector information systems. Following the PRISMA guidelines, 38 reviewed articles published between 2020...

This study investigated the prevalence of musculoskeletal disorders (MSDs) and fatigue among Balinese gamelan craftsmen engaged in bronze forging. A pre-experimental pre–post design was applied to 51 workers meeting specific inclusion criteria. Fatigue was assessed using the EORTC QLQ-C30, MSDs with...

This study aims to develop and evaluate an adaptive lighting system to enhance the efficiency of microalgae cultivation in closed environments. The system integrates a photovoltaic solar panel, energy storage, and an IoT-based controller that dynamically regulates LED illumination according to real-time...

The use of plastic waste as a substitute material in concrete is an innovative approach to supporting sustainable construction while reducing the environmental impact of plastic waste accumulation. This study aims to evaluate the effect of partial aggregate substitution by plastic waste on concrete compressive...

Access to reliable and sustainable electrical energy remains a challenge for coastal communities in Indonesia, especially in areas not yet served by the national grid. This study presents the design and implementation of a standalone solar power system (PLTS) integrated with Internet of Things (IoT)...

This research investigates the prospects and performance of lithium-based batteries for off-grid photovoltaic (PV) systems, which have been proven crucial for enabling high solar energy penetration. It also quantifies how adding a lithium-based battery affects the energetic performance of off-grid PV...

Artificial Intelligence (AI) is rapidly transforming medical technology. By analyzing vast datasets, AI enhances diagnostic accuracy, optimizes treat-ment plans, and accelerates drug discovery. It also improves patient care through remote monitoring and personalized medicine. Nowadays, human body structure...

At present, air quality has been contaminated with vehicle exhaust emissions. This also happens inside the campus due to many students using private vehicles on campus. If not controlled, this condition will get worse and there will be air pollution on campus. This research builds a detection and monitoring...

Implementation of energy conservation in green building construction faces significant challenges in developing countries, particularly in Indonesia. This study aims to identify technical and policy barriers hindering energy conservation implementation in green building projects in Bali through a mixed-method...

This study conducts a Computational Fluid Dynamics (CFD) analysis to simulate and evaluate the airflow distribution within a ducting system designed for a urea storage warehouse. The objective is to optimize the ventilation layout to ensure uniform air distribution, minimize pressure losses, and enhance...

The Jongor Tegal Coastal Fisheries Port (PPP) plays a vital role in supporting fisheries activities in Central Java Province. With an area of approximately 17 hectares, this port can accommodate hundreds of fishing vessels and provides adequate facilities for fish loading and unloading activities. This...

Bali’s architectural identity is closely linked to volcanic tuff stone (batu padas), valued for its lightweight, carvability, and cultural symbolism. However, extensive quarrying in Gianyar has generated large amounts of waste, causing severe environmental impacts such as riverbank erosion, irrigation...

This study investigates the speed and power requirements of a light coastal patrol boat repowered with twin 300 hp diesel engines using computational power prediction. The vessel—laid up since 2015—was retrofitted to achieve a service speed target of 40 kn, replacing its original 100 hp unit. A high-fidelity...

The development of efficient and adaptive river transportation infrastructure is crucial to enhancing mobility and supporting economic activities in both inland and coastal regions. This study focuses on the design of a steel floating pontoon, functioning as a floating jetty, to strengthen river-based...

The performance and reliability of solar photovoltaic (PV) systems are critically affected by defects such as cracks, chips, hotspots, and delamination, which can arise during manufacturing, transportation, or operation. Early detection and classification of these defects are essential to ensure optimal...

With the advancement of time and the progress of science and technology, plastic has become a product increasingly used by various communities. The plastic industry has become one of the major industries present in various countries. Injection molding is one of the methods for processing plastic raw...

In the era of advances construction technology in Indonesia, the use of precast concrete as a building structural element is increasing. For efficient and strong building structures, in-depth research is necessary performance of precast beam connections. This research aims to evaluate the performance...

Gas turbine thermal efficiency degradation presents significant operational challenges, with uncertainty persisting regarding the relative contributions of underlying machine health versus compressor washing maintenance to performance recovery. This study specifically aimed to identify the dominant factor...

Academic advising in higher education institutions plays an important role in supporting student success. However, the effectiveness of conventional practices is still hampered by several factors, such as the requirement for face-to-face meetings, inflexible schedules, and manual data recording, which...

Academic administrative tasks in vocational higher education institutions are frequently performed manually, resulting in inefficiencies in time management, accuracy, and documentation. This study introduces the development and partial implementation of eSekjur, a role-based digital information system...

The development of adaptable three-phase load banks is essential for testing and evaluating power systems, distribution networks, and electrical equipment under various operational conditions. These load banks play a critical role in simulating real-world load scenarios, enabling engineers and technicians...

DC motors are extensively utilized in industrial operations and automated control systems due to their ability to deliver high torque and exhibit favorable dynamic behavior. This study presents a mathematical model and simulation of the BLM57050-type DC motor using a second-order system approach. The...

Accurate detection of cumulonimbus (CB) clouds is critical for supporting weather monitoring and aviation safety. In this research, a spatially validated dataset was developed using satellite imagery from NOAA-18 and NOAA-19, focusing on the classification of CB and nonCB clouds. Cloud objects were annotated...

Polbeng 1 Research Vessel was built in 2025 at the Politeknik Negeri Bengkalis and in collaboration with CV Fatih Bahari Engineering. This vessel is made entirely of high-density polyethylene (HDPE) plastic. This ship is assembled using a welding method carried out using X-groove welding. However, there...

Green buildings offer significant solutions to global environmental challenges. Nonetheless, adopting green building technology in small island tourist destinations, such as Bali, faces complex obstacles that are not yet fully understood. This research aims to identify and analyse barriers to adopting...

Predictive maintenance (PdM) has emerged as a critical strategy in smart manufacturing systems, aiming to reduce unplanned downtime, extend equipment lifespan, and improve overall operational efficiency. This paper presents the implementation of an integrated predictive maintenance framework that leverages...

The Ocean Thermal Energy Conversion (OTEC) system is an innovative renewable technology that utilizes the temperature gradient between warm surface seawater and cold deep seawater to generate electricity. A key component of the system is the shell-and-tube heat exchanger condenser, which enables efficient...

The adoption of electric vehicles (EVs) in ride-hailing services offers a promising solution to reduce emissions and promote sustainable mobility in airport environments. This study aims to identify the dominant factors influencing passenger preferences toward green ride-hailing services at I Gusti Ngurah...

Sangeh Village in Abiansemal Sub-district, Badung Regency, is a tourist destination that combines spiritual values, natural beauty, and facilities for the community. The village has natural attractions such as a nutmeg forest with a population of monkeys, Pucak Sari temple, and Taman Mumbul. An important...

Infrastructure development plays a crucial role in accelerating national progress in Indonesia. As an archipelagic nation where water territories cover two-thirds of the total land area, concrete utilization is particularly significant for coastal, offshore, and water-related construction projects. This...

Brondong Lamongan Village has fisheries potential with an area of 15,000 ha. The percentage of the population who work as fishermen is 19,881 people or 26% of the total 76,485 people or 100%. This indicates that the majority of the Brondong Lamongan Community work as fishermen. However, the fishing methods...

The demand for compact, efficient, and refrigerant-free cooling systems for small-scale applications necessitates innovative automation solutions. This paper presents the design and validation of a Peltier-based water chiller automated by a novel hybrid control system. The novelty of this architecture...

In this industrial revolution era, many high/medium risk machineries were implemented without safety certification from authorized third party due to expensive additional costs. To deal with that issue, this research applies internal risk assessment by following ISO 12100 standard to a case study involving...

This paper presents the design and implementation of a miniature Air Handling Unit (AHU) system using a hybrid PLC–ESP32 controller integrated via the Modbus TCP/IP protocol. The system incorporates temperature and humidity sensors (DHT22 and DS18B20) to control air circulation devices such as fans,...

In Indonesia, industrial waste is widely generated from the wood and food industries. The large amount of waste available in this environment has great potential to be reused into renewable energy, such as biomass pellets. Therefore, it is necessary to conduct research in the field of waste engineering...

Final-year students often face challenges in completing their final projects, where self-efficacy becomes an important factor influencing success. The use of Artificial Intelligence (AI) is suspected to play a role in enhancing students’ self-efficacy. This study aims to determine the relationship between...

One way to increase the surface hardness of a material is by adding carbon elements in a confined space under controlled temperature, a process known as pack carburizing. This study used the pack carburizing technique to explore the effects of different carbon powder sources on the hardness and microstructure...

This study aims to develop a prediction system for the Farmer’s Maintenance Result Recapitulation (RHPP) in broiler farming using the Random Forest Regression algorithm. The research addresses the delay in RHPP availability, which typically occurs several days after harvest, reducing management efficiency...

Manado State Polytechnic has the main goal of implementing sustainability systems by applying the green architecture concept when building its facilities, including the Integrated Laboratory & Workshop which is still under Design Recognition. This research aims to assess the sustainability value...

Cooling systems for vegetables and fruit in tropical countries are essential for improving post-harvest quality. However, in Indonesia, these systems still pose a significant cost burden. Therefore, an efficient, low-cost, and environmentally friendly system is needed. The purpose of this study is to...

Heat exchangers are widely known in industry as one of the standard components in thermal systems. Numerous studies on heat exchangers have focused on design modifications, fluid variations, and diverse applications to enhance thermal performance. This research investigates the enhancement of heat transfer...

Construction projects involve multidisciplinary tasks, complex activities, and high levels of inherent risk. These risks occur not only during the implementation stage but also at every stage of the project lifecycle, and must be carefully considered to prevent additional costs and delays. The maintenance...

This research highlights the problem of dropout at the university level as a global issue that has a wide impact, not only on individuals but also on institutions, families, and communities. With technological advancements, big data is now used to analyze and predict the risk of dropping out of school...

Indonesia’s high seismicity necessitates robust Earthquake Early Warning Systems (EEWS). Existing systems, while valuable, often face limitations in notification speed and the precision of impact area estimation. This paper presents the development of an enhanced earthquake warning system designed to...

Improving the efficiency of chili pepper (Capsicum annuum) post-harvest sorting is a key challenge in advancing precision agriculture. The ripeness of chili peppers affects taste, market value, shelf life, and overall product quality, making sorting a critical step. Conventional sorting methods remain...

Amid rising global demand for fresh produce and the central role of horticulture in Indonesia’s food security, this study develops a data-driven, machine-learning framework for multi-commodity classification to support evidence-based agricultural policy. We compile a national-scale panel (2009–2024)...

Efficient irrigation is essential for sustainable chili cultivation, particularly in open-field agricultural areas in tropical climates with limited access to electricity and water. This study presents the development and field evaluation of an IoT-based solar-powered irrigation system that dynamically...

This study developed a web-based accreditation information system for the Applied Program of Politeknik Negeri Manado using a User-Centered Design (UCD) and prototyping approach with active participation from 30 respondents, including academic staff and accreditation team members. Through two evaluation...

Sangeh Village, located in Abiansemal District, Badung Regency, is home to several temples that function as focal points for the spiritual life of the local community. Among these, Pura Taman Pancaka Tirta holds profound religious and ecological significance. With increasing awareness of cultural heritage...

Revitalization projects for educational infrastructure, particularly for High School, face challenges in supervision, including delayed reporting, limited transparency, and lack of real-time data. This study aims to design and develop a digital monitoring system based on Internet of Things (IoT), mobile...

The selection process for participants in the D2 Computer Network Administration Study Program requires an integrated, efficient, and transparent system to ensure the quality of human resources who will follow the program. This research aims to design and develop a web-based selection system directly...

Conventional customer service concepts that rely on communication via email, WhatsApp, and mobile phones such as call centers have limitations in scalability, especially when the number of customers continues to grow without being matched by an increase in human resources. This is also experienced by...

The development of the Pantai Indah Kapuk (PIK) 2 area, which has been ongoing for a decade, is part of the National Strategic Project (PSN). Development activities in this area are expected to have negative impacts, including increased pollution and the Heat Island Effect. This study aims to optimise...

This study analyzes the performance of solar modules in an off-grid Solar Power Plant (PLTS) system in Lasiana, Kupang City. The off-grid system operates independently and is not connected to the main power grid, making it a vital solution for remote areas without electricity. The study aims to evaluate...

The Solar Power Plant (PLTS) is a solution to the fossil fuel/oil energy crisis. Oebau Village, in Pantai Baru District, Rote Ndao Regency, covering an area of 1,280.1 hectares, has around 800 hectares of rainfed rice fields. Through the village fund program, reservoirs have been built to collect water...

The integration of the Internet of Things (IoT) into vehicular networks has given rise to a promising new concept known as the Internet of Vehicles (IoV), which is reshaping transportation by enhancing safety and improving mobility efficiency. The Electronic Control Unit (ECU) in IoV most commonly utilizes...

The high prevalence of respiratory diseases in Indonesia has driven the government to implement various policies, such as strengthening primary healthcare services and promoting early detection programs, in order to reduce the morbidity and mortality associated with these diseases. As a solution to support...

Fly ash and bottom ash waste from coal combustion in steam power plants has the potential to be utilized as an alternative raw material in the production of environmentally friendly paving blocks. This study aims to evaluate the effect of fly ash variation on the physical and mechanical properties of...

A safe and comfortable urban settlement is an area with easy access to public facilities. Research related to improving the quality of urban settlements provides a clear direction for accessibility and infrastructure. The complexity of urban settlement characteristics takes time in collecting data; therefore,...

An EES-based thermodynamic model was established to evaluate the temperature and energy performances of an on-grid bio-PCM solar cold storage system. The bio-PCM solar cold storage system comprises a 3.1 kWp monocrystalline solar PV integrated with a refrigeration system using R290 refrigerant. Its solar...

The global agricultural sector faces significant challenges from climate change and increasing food demand, with Artificial Intelligence (AI) emerging as a transformative solution for optimizing resources and enhancing productivity. This study presents a comprehensive bibliometric analysis of AI-driven...

Technological advancements in the construction industry have encouraged the adoption of Building Information Modeling (BIM) as a tool to enhance planning efficiency and accuracy. This study aims to assess the comparison of structural concrete work volumes and costs between the conventional method and...

This study presents an energy performance evaluation of crystal tube-ice making machines (CTIMM) using three different refrigerants include R-404A, R-134A, and R-717 incorporated three cooling types of condenser involving air cooled, water cooled and evaporative cooling system arrangements. The evaluation...

Extracting structured beneficiary information from Corporate Social Responsibility (CSR) reports remains a practical challenge when key data is embedded in narratives shared through platforms such as WhatsApp. Reliable reporting is essential to measure program reach and demonstrate impact. Yet inconsistent...

This system is an innovative solution to overcome problems in the process of submitting proposals for procurement of activities. To prevent and reduce errors that often occur in proposal writing, such as inappropriate formatting, insufficient document completeness, and non-compliance with administrative...

Meetings are essential for organizational decision-making, yet manual minute-Meetings play a critical role in organizational decision-making; however, manual minute-taking often suffers from inaccuracy and inefficiency. This study introduces Smart Notulensi, a zero-shot dual-LLM pipeline for end-to-end...

The study explored the effects of electromagnetic field (EMF) exposure on gasoline fuel molecules using Fourier Transform Infrared (FTIR) spectroscopy. Gasoline samples were treated with an electromagnetic field of 1200 mT at exposure times of 180 s and 300 s followed by magnetic field removal (retention)...

The rapid growth of Internet of Things (IoT) devices in outdoor environments raises critical concerns about secure key establishment. Conventional cryptographic methods often depend on pre-distributed keys or computationall intensive algorithms, which are unsuitable for resource-constrained IoT nodes....

Retrieval-Augmented Generation (RAG) systems rely on efficient and accurate retrievers to supply relevant context to large language models. While dense retrievers achieve superior semantic recall, they are computationally expensive, limiting their practicality in latency-sensitive or resource-constrained...

In recent years, remotely operated vehicles (ROVs) for underwater environments have played an important role in research, observation, and military applications, directly facilitating human intervention, without the direct presence of humans in the water. ROVs are typically manually controlled using...

Studies have been conducted to investigate the usage of cocoa pod extract inhibitors derived from biomass waste to reduce the pace of steel corrosion. For 24, 72, 120, and 168 h at first, the steel was pre-soaked in the inhibitor. After that, the immersion in corrosive HCl medium was carried out with...

This study aims to improve the quality of virgin coconut oil (VCO) to be equivalent to B40 biodiesel when mixed with pure diesel for use as diesel engine fuel. A 60/40 diesel-VCO blend was prepared to maintain fuel quality. Using the Box-Behnken Response Surface method, transesterification was optimized...

Service robots are increasingly being developed for hospitality environments, including restaurants. This preliminary study investigates the development of a ROS-based autonomous delivery robot capable of navigating indoor restaurant layouts to deliver food efficiently and safely. The robot system integrates...

Padang City, located on the western coast of Sumatra, is a tsunami-prone area with varying levels of vulnerability across its subdistricts. This study aims to develop a decision support system using the Additive Ratio Assessment (ARAS) method to map tsunami risk levels and shelter needs at the subdistrict...

This article presents the conceptual design of the JUARA (Joint Utility Agriculture Remote Automation) tractor research, which was developed to address Indonesia’s agricultural modernisation challenges. The novelty of this research lies in integrating remote automation into a modular tractor design tailored...

This study presents the design and construction of a portable cooler box prototype based on green technology, utilizing Bio-PCM from Virgin Coconut Oil (VCO) as a thermal energy storage system. A thermoelectric cooling system is used to achieve high energy efficiency without conventional refrigerants...

Sentiment analysis on social media platforms presents unique challenges due to the informal, noisy, and often imbalanced nature of user-generated content. This study proposes a hybrid model that integrates a transformer-based deep learning approach, IndoBERTweet, with probabilistic reasoning using Naive...

Ensemble Multi-Criteria Decision Making (MCDM) has emerged as an innovative field, addressing challenges associated with the absence of a universally superior MCDM technique and the lack of objective methods for selecting the best approach. Researchers have proposed various techniques for combining MCDM...

This study investigates the enhancement of MSME (Micro, Small and Medium Enterprises) marketing effectiveness through the integration of data mining techniques within CRM (Customer Relationship Management) systems. Using a private wholesale transaction data from SMEs for the 2023–2025 period, key variables...

The application of a fish Cool box using an outdoor split AC and the cooling materials are R22 and R290 refrigerants is one way to overcome the problems of fishermen selling fish in an effort to preserve the fish they sell, where so far the preservation method used is still using ice blocks or bulk ice....

Coffee beans are essential material standard for coffee making. Before processed for consumed, the first step must be done is sorting. The purpose of sorting is to separate coffee beans by the size or destroyed or broken beans. This process is imperative for better tasting of coffee drinks. For most...

Technical drawing tables play a crucial role in facilitating the creation of intricate component and structural designs. However, the modification of original drawing table at Politeknik Manufaktur Bandung has raised significant concerns regarding the ergonomic challenges, underscoring the importance...

Air pollution is a significant environmental and health challenge, with impacts comparable to major global health risks such as smoking. Developing low-cost, power-efficient monitoring solutions is essential for broader accessibility and deployment. This study introduces a lightweight quantized deep...

This study analyzes Automatic Identification System (AIS) data collected by the AIS-POLBENG Remote Base Station (RBS) in the Malacca Strait over a five-month period (February–June 2025) to support maritime traffic monitoring. The AIS data processing system was developed to encompass raw data recording,...

The utilization of coconut shell charcoal as a raw material for herbal toiletries holds great potential due to its environmentally friendly nature and economic value. However, the production process for good quality charcoal powder still faces challenges in terms of efficiency and consistency. This study...

Indonesia frequently experiences earthquakes, particularly in Jakarta. Due to high seismic risk, ensuring the earthquake resistance of existing buildings is crucial. Indonesia currently lacks national guidelines for seismic evaluation of existing structures, resulting in reliance on ASCE/SEI 41–17. This...

This study investigated the potential of FANR, Aceh, Indonesia, as an alternative precursor material for geopolymer mortar. FANR was analyzed through X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), and Scanning Electron Microscopy (SEM) to determine its chemical composition, crystalline structure,...

Cakalang fufu, a traditional smoked skipjack tuna product from North Sulawesi, requires a reliable sterilization process to ensure product safety, extend shelf life, and maintain quality. This study presents the design and implementation of a solar-powered retort machine integrated with an Internet of...

Online examinations have become an integral component of modern education, offering flexibility but also introducing significant challenges related to academic integrity. Cheating in an online setting is a serious issue that can undermine the credibility of the educational system. This study, therefore,...

The distribution of Smart Indonesia Card (KIP) Scholarship assistance for College currently still faces a number of challenges, especially regarding the efficiency of the selection and plenary processes, as well as a lack of transparency which has an impact on program accountability. The limitations...