All of the articles in this proceedings volume have been presented at the International Conference on Sustainable Green Tourism Applied Science (ICoSTAS) Engineering Applied Science (EAS) 2025 on 9 – 10 October 2025 in Politeknik Negeri Bali, Kampus Bukit, Jimbaran, South Kuta, Badung Regency, Bali,...

With the rapid advancement of technology, carburetor systems in motorcycles have been replaced by Electronic Fuel Injection (EFI) systems, which automatically regulate fuel delivery via an Electronic Control Unit (ECU). However, poor fuel quality often leads to injector clogging and increased carbon...

For individual or family cooking needs, a manual spice and meat grinder is sufficient. If used for larger purposes, it is certainly not enough. For large cooking needs and used as a business to be sold at SME stalls, the community usually uses PLN electricity sources and fuel oil, such as gasoline, to...

This study aims to evaluate the thermal performance of Phase Change Material (PCM) composites based on paraffin wax. However, the use of paraffin alone as PCM has a drawback in terms of low thermal conductivity. To enhance the thermal conductivity of the PCM, additional elements need to be incorporated...

The need for refrigeration in storing fishermen’s catches is crucial. A solar-powered cooling system is highly necessary during fishing trips, as no electrical energy is available on fishing boats. The objective of this study is to develop a mini cooler with a solar-powered vapor compression refrigeration...

Environmental monitoring systems are crucial in smart and sustainable infrastructure, particularly in industrial settings where temperature and humidity must be continuously monitored in real-time. This research presents the design and implementation of an Internet of Things (IoT)-based monitoring system...

Operation and maintenance of a dam that does not follow established procedures will not only reduce the effectiveness of the dam in question. However, they can also endanger the safety of the dam. The fact that the risk of a dam is mostly caused by inadequate exploitation and maintenance. The Palasari...

Human body structures supported by the skeletal system are susceptible to osteoporotic vertebral compression fractures due to aging. The most common fracture among the geriatric population is vertebral fracture (25%), compared to hip fracture (24%). These symptoms, which largely stem from osteoporosis...

Osteoporotic vertebral compression fractures (VCF) are very common spinal fragility fractures affecting the elderly, with an incidence reaching 700,000 elderly per year, affecting up to 25% of individuals over 70 and 50% over 80 years old. These symptoms typically appear in postmenopausal women and men...

Reinforced concrete plays a crucial role in ensuring the strength and durability of building structures. Yet the community in Jagaraga Village has a limited understanding of proper reinforcement techniques. This study aimed to enhance the community’s knowledge and practical skills regarding reinforcement...

In this study, the effect of coolant flow and welding time on the joint quality in the spot welding process, especially on St 40 steel material, was evaluated. Spot welding, a common method in the automotive industry, involves the use of electric current to join metal plates by heating and melting the...

The construction sector is a significant contributor to carbon emissions, high energy consumption, and excessive exploitation of natural resources. Sustainable construction offers a solution to reduce environmental impact while maintaining efficiency and sustainability. This study focuses on optimizing...

Students at Politeknik Negeri Bali often face difficulties when completing their final projects, especially in reviewing large numbers of scientific articles. The process of searching, reading, and understanding relevant literature is time-consuming and may hinder learning efficiency and research quality....

The Farmer’s Terms of Trade (FTT) plays a vital role in supporting key sectors of the Indonesian economy and contributes significantly to improving household incomes. This study utilizes monthly FTT data from Bali, spanning from January 2017 to June 2021, sourced from the official website of the Central...

Hydropower remained one of the most promising renewable energy sources, particularly for rural and off-grid communities. Pico-hydro systems, typically with a capacity of less than 5 kW, offer an attractive solution for areas with limited access to electricity, with cross-flow turbines being widely applied...

Nocturnal durian theft poses a significant challenge for farmers, leading to substantial economic losses. This research proposes a deep learning approach for night-time durian theft detection, leveraging the capabilities of the YOLOv8 object detection network. A unique dataset was collected in a nocturnal...

The rapidly growing coffee industry in Indonesia, especially in Bali, produces large amounts of coffee grounds waste, most of which has not been optimally utilized. On the other hand, the use of conventional plastics that are difficult to decompose causes serious environmental problems. This study aims...

The purpose of this research is to evaluate the performance of a split-wall air conditioning unit utilizing a custom-built data logger. An R290, 2.5 kW split-wall air conditioning unit was installed for this investigation. A custom-built data logger was employed to measure all the evaluation parameters....

Walls, as one of the primary building elements, play a crucial role in terms of temperature regulation, sound insulation, and resistance to natural disasters. Therefore, selecting the right wall material can significantly contribute to achieving green building goals. In this study, two different types...

One of the main issues in construction projects is the high rate of structural defects, which contributes to material waste, increased costs, and project delays. This contradicts the principles of sustainable construction, which emphasize resource efficiency, waste reduction, and improved building quality...

This research aims to analyze the quantitative concentration of methane in a biogas reactor using an MQ-4 sensor. The novelty revealed by this research lies in the development of a low-cost, real-time monitoring system for methane content in biogas reactors. The device intesgrates the methane reactor,...

Food waste significantly contributes to global greenhouse gas emissions, water and air pollution, and socio-economic issues, including in Bali Province. In Bali, increased tourism correlates with population growth and a rise in organic waste, reaching up to 59.10% of total waste. This is largely dominated...

Deep learning, a prominent branch of machine learning, has emerged as a powerful predictive modeling approach known for its high accuracy. One of its most essential components is the Artificial Neural Network (ANN), which emulates the human brain’s neural structure, comprising thousands of interconnected...

This study develops a passive cooling system for photovoltaic (PV) panels using phase change material (PCM) to enhance power output and efficiency. The novelty of this work lies in applying paraffin wax (FRW 42) with a tropical-optimized melting point (42℃) directly encapsulated on the PV back surface,...

The efficiency of solar photovoltaic (PV) systems significantly decreases as the surface temperature of the panels increases due to prolonged solar radiation. This study aims to enhance the performance of solar PV by implementing an active water spray cooling system. The system utilizes a series of nozzles...

This study addresses the water quality issues in Semaja Village, where surface river water, the main source, becomes highly turbid during the rainy season. Managed by the “Pancoran Sari” group, the existing water supply system lacks thorough water quality testing, raising health concerns. To improve...

Early detection of plant diseases is crucial for minimizing crop losses and ensuring sustainable agriculture, particularly in tropical regions. Cocoa (Theobroma cacao), a major cash crop, is highly susceptible to diseases such as Black Pod Rot and Monilia Pod Rot, which can severely impact yield. Conventional...

The application of computer technology is needed to help practicum assistants. Politeknik Negeri Bali, through research programs, has developed technology in assisting learning activities/ practicums. The application developed is VMPAs (Visual Multimedia Practice Assistant). At VMPAs, application development...

The increasing need for digital transformation in vocational higher education requires universities to improve the management of Information Technology (IT) services and, at the same time, implement sustainable practices. This research examines integrating the green IT concept within the Information...

Sulangai Village boasts uniqueness as an ecotourism destination, offering a range of tourism potentials, including Goa Gong Waterfall, kele-lele honey cultivation, cooking classes at Puhu Camp, and agro-tourism. Sulangai Village is also designated as a Social Barn of Disaster Response Village and Environmental...

Sustainable tourism, also known as green tourism, has become a global trend that encourages the hospitality industry to adopt environmentally friendly practices. In this regard, investments in the hospitality sector are not only assessed based on profitability but also on their contribution to environmental...

In the tourism sector, the success of construction projects is closely tied to the efficiency of project scheduling, particularly in support of environmentally sustainable and green tourism operations. One effective strategy for reducing project duration without significantly increasing direct costs...

A Retaining Wall (DPT) is a structural element designed to hold back soil and maintain land stability, particularly in hilly or landslide-prone areas. In Ubud, Bali, a region renowned for its cultural tourism and natural landscapes, retaining walls play a crucial role in ensuring land stability and infrastructure...

The construction industry has a significant impact on the environment, particularly in terms of its contribution to global warming, due to high energy consumption. The green building concept serves as a strategic solution to mitigate these negative impacts by applying sustainability principles in building...

Accessing accurate and comprehensive food calorie and nutrition data remains a challenge, as existing references are often incomplete, outdated, or difficult to access. This limitation reduces the effectiveness of daily dietary monitoring for both individuals and healthcare professionals. This study...

The intersection of ergonomic design and agroecological practices remains underexplored in developing-country agrotourism systems, despite their potential to simultaneously improve farmer health, productivity, and environmental sustainability. This study presents a novel integrative framework that combines...

Optimal performance and high productivity of human resources are significant aspects that a company wants to achieve continuously. PT. Bali Bangunan Konstruksi is a construction services industry engaged in the implementation of Villa buildings. One of the obstacles experienced is illness and accidents...

The event industry plays a crucial role in supporting tourism, particularly in Bali. As the need for organizing meetings, incentives, conferences, and exhibitions increases, the MICE (Meetings, Incentives, Conventions, and Exhibitions) industry is also growing rapidly. At the event planning stage, selecting...

Urban infrastructure development, particularly integrated utility network systems, faces increasing complexity in cities like Denpasar due to spatial limitations, the diversity of utility types, and the need for inter-agency coordination. This study aims to identify the most suitable construction method...

English proficiency has become an essential skill for students to enhance their competitiveness in the job market, especially in a global environment. The Test of English for International Communication (TOEIC) is one of the international standards used to assess English language proficiency for professional...

Water allocation is the process of regulating water provision in a certain amount and time, based on water availability and user needs, according to the type of use and priority order. This requires integrating all water users’ needs according to priorities, considering water availability. Tukad Oos...

In today’s digital era, the Diploma 2 (D2) Computer Network Administration program plays a vital role in preparing graduates to contribute to the ICT industry. The success of this program, however, relies heavily on the effectiveness of internship experiences, which serve as a bridge connecting theory...

Limited access to reliable electricity in rural areas continues to pose safety, social, and ergonomic challenges for communities. This study presents a community-based intervention in Labak Suren Village, Bali, focusing on the implementation of solar-powered LED street lighting and its ergonomic impact...

Aerodynamic testing in wind tunnels requires accurate and reliable systems for measuring drag and lift forces. This study aims to design and develop an Arduino-based instrument capable of measuring aerodynamic forces in real time with high precision. The system utilizes load cells as the primary sensors...

Prefabricated bamboo construction offers a sustainable alternative to conventional building materials due to its low embodied carbon and rapid renewability. This study evaluates the environmental performance of prefabricated bamboo construction in Bali through a cradle-to-gate Life Cycle Assessment (LCA),...

Buildings with a high risk of lightning strikes due to factors such as height, geographical location, and strategic function must be equipped with a lightning protection system. The primary purpose of installing a lightning rod is to protect the building structure, electronic equipment and ensure the...

Competency assessment systems are essential for educational and professional certification frameworks, providing structured methodologies for evaluating knowledge, skills, and competencies. Traditional implementations, often based on localized servers and manual procedures, have limitations in scalability,...

Local governments deliver essential public services, including civil registration, licensing, and social welfare programs. However, many processes remain manual and paper-based, resulting in prolonged service times, overcrowded queues, and increased operational costs. This study examines the development...

Cooling systems such as split AC are currently one of the devices widely used in commercial and residential buildings. However, high energy consumption, especially during peak loads, is a major problem that has a direct impact on energy efficiency and operational costs. Therefore, innovation is needed...

The Archimedes wind turbine has emerged as a viable solution for such areas with low wind speed. The horizontal-axis design incorporates spiral-shaped blades, allowing it to operate effectively even at 2.5 m/s. Its drag-based design improves torque generation and delivers higher aerodynamic efficiency...

Culinary tourism plays a significant role in enhancing the travel experience of visitors. In Nusa Dua, Bali, the large influx of both domestic and international tourists has led to an increase in dining establishments, making the process of selecting a restaurant more challenging. This study presents...

The concept of Vocational Realistic Education (VRE) integrates students’ real-life experiences with contextual problem-solving relevant to their vocational fields. To implement this approach effectively, mathematics teachers in vocational schools must adopt pedagogical strategies that align with digital...

The implementation of IoT technology in rural or remote areas with limited internet infrastructure poses a significant challenge, particularly in the context of IoT Smart Farming in Indonesia’s agricultural regions. Generally, IoT Smart Farming technology is based on WSN with devices spread across agricultural...

The problem of limited accessibility and uneven public transportation facilities requires the construction of proper bus stop houses at bus stop points. This study aims to analyze the feasibility of constructing the Trans Metro Dewata bus stop house by considering four main criteria: land use, passenger...

Indonesia has ample renewable energy potential, with wind energy primarily available in coastal areas or on islands. According to the National Energy Council, Indonesia’s wind energy potential reaches 154.9 Gigawatts (GW). However, its use for electricity generation is still very limited, accounting...

Research on power generation using waste heat is a conversion process that utilizes thermoelectric generator elements, which can be generated from the heat produced by burning waste. This research aims to study and develop a system based on the capabilities of TEG components that can be designed to convert...

The rapid development of Artificial Intelligence (AI) has sparked diverse public opinions, making sentiment analysis a crucial tool for understanding public perception. This study conducts a comparative analysis of two machine learning algorithms, Random Forest (RF) and Support Vector Machine (SVM),...

Customer satisfaction has become a crucial metric for the business sustainability of Internet Service Providers (ISPs) amidst fierce industrial competition in Indonesia. Automated sentiment analysis on social media offers a solution to efficiently monitor public opinion. This study aims to comprehensively...

This community service will be carried out at Ngejawa Ngebali Temple, Mranggen Village, Srumbung District, Magelang Regency, Central Java Province. The service is carried out by installing new lighting at the temple site. The installation of the lighting is assisted by partners, namely the temple caretakers,...

Reinforced concrete construction work, particularly in large-scale construction projects, involves a series of physical activities that demand the endurance of the worker’s body, as well as a high level of concentration and skill. The quality and efficiency of work are highly dependent on the conditions...