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Air pollution and oil reserves are two major issues in the technological development of the automotive industry. Air pollution is caused by gases from burning fossil fuel vehicles. In 2018-2019 Indonesia experienced a drastic decrease in petroleum resources by 49.8%. To overcome this problem, many researchers have conducted research on electric vehicles, including electric bicycles. This study aims to determine the effect of distance and load on BLDC motor power consumption on a prototype e-bomber electric bicycle designed for all terrains such as rocky, sandy, and muddy, and has a large battery capacity, low power consumption, and an electric motor with good speed and torque. This research uses a pseudo-experimental method with a quantitative approach. Tests were carried out on e-bomber electric bicycles with distances of 3 km, 5 km, and 8 km and loads of 60 kg, 70 kg, and 80 kg with a speed of 25 km / h. The results showed that there was an influence of distance and load on the e-bomber electric bicycle. The results showed that there was an effect of distance and load on BLDC motor power consumption with the results of graph analysis and two-way ANOVA tests conducted and the lowest average power consumption of 500 watts at a distance of 3 km and a load of 60 kg, while the highest average power consumption was 522.5 watts at a distance of 8 km and a load of 80 kg.

The purpose of this study is to analyze the effectiveness of loan distribution at KSP Kopdit Pintu Air Kewapante Branch. This study is a descriptive qualitative research using data collection techniques such as observation, interviews, and documentation. The data analysis techniques used are data collection, data reduction, data display, and conclusion drawing. The results of this study show that the effectiveness of loan distribution at KSP Kopdit Pintu Air Kewapante Branch can be seen from several aspects, including loan granting procedures, risk management, and its impact on members. KSP Kopdit Pintu Air Kewapante Branch has implemented good procedures in loan distribution, but there needs to be improvement in risk management and supervision of loans granted. This is important to ensure the sustainability of the cooperative and the welfare of its members. Loan distribution at KSP Kopdit Pintu Air Kewapante Branch can be said to be quite effective if the distribution procedures are followed properly, credit risks are managed appropriately, and the impact on members is positive. It is important to continue to conduct regular evaluations and improvements to ensure that loan distribution continues to provide optimal benefits for members and the cooperative.

Program pengabdian masyarakat ini bertujuan untuk meningkatkan pengetahuan dan keterampilan warga Desa Gununglurah dalam mengolah limbah organik rumah tangga menjadi produk ecoenzim yang bermanfaat untuk kesehatan, kebersihan, dan pertanian. Metode yang digunakan adalah pelatihan, demonstrasi, serta pendampingan pembuatan ecoenzim berbahan dasar sampah organik (kulit buah, molase atau gula merah, dan air). Dari sudut pandang farmasi, ecoenzim mengandung senyawa bioaktif hasil fermentasi yang dapat diaplikasikan sebagai pembersih alami, pengendali bau, serta berpotensi sebagai bahan tambahan dalam produk kesehatan tradisional. Hasil kegiatan menunjukkan antusiasme warga yang tinggi, peningkatan pemahaman tentang pengolahan limbah, serta kemampuan menghasilkan ecoenzim secara mandiri. Pelatihan ini berkontribusi terhadap peningkatan kesadaran kesehatan lingkungan dan potensi pemanfaatan ecoenzim dalam mendukung konsep green pharmacy.

Energy audits are an essential step in supporting the efficiency of electricity utilization, particularly in large-scale commercial buildings such as shopping malls. This study was conducted to measure and analyze electricity consumption at Pollux Malls Paragon Semarang using a direct measurement approach combined with historical monitoring of energy consumption. The main focus of the audit was on the lighting system and the Heating, Ventilation, and Air Conditioning (HVAC) system from the Basement to the 6th Floor. Measurement results showed that the Energy Consumption Intensity (ECI) ranged between 39.94–45.20 kWh/m²/month, far above the national efficiency standard (maximum 18.5 kWh/m²/month), indicating a highly wasteful energy usage condition. The two main systems contributing to the largest share of consumption were HVAC and lighting, with a combined estimated share exceeding 60% of the total monthly energy use. Based on the analysis, several energy-saving opportunities were identified, including the replacement of energy-efficient lighting (LED), installation of automatic control systems (light, temperature, and timer sensors), and regular maintenance of HVAC systems. With the implementation of technical, managerial, and operational efficiency strategies, it is estimated that energy consumption savings could reach 20–30%, or around 60,000 kWh per month, without compromising visitor comfort.

Enhancing the efficiency of renewable energy on ships is crucial for reducing dependency on fossil fuels. This research employs the Research and Development (R&D) method, aiming to design and implement a solar panel optimization system for battery charging, with a focus on increasing power efficiency and providing real-time performance monitoring. The system is designed using Maximum Power Point Tracking (MPPT) technology to maximize the solar panel's power output. A 200Wp solar panel with dimensions of 1290 x 760 x 30 mm was utilized. Static testing results show that the deployed sensors possess a high degree of accuracy, with an average error of 0.71% for the temperature sensor and only 1.81% for the light sensor used to monitor environmental conditions. Dynamic and system integration tests prove that the MPPT implementation significantly increases power output efficiency by 30.83% compared to a system without MPPT. Furthermore, the system with MPPT charges the battery approximately 27% faster. Additionally, the developed Modbus protocol-based monitoring system enables comprehensive and remote monitoring of key parameters such as voltage, current, temperature, and light intensity via a cloud database. Data communication reliability tests confirmed the system's capability to transmit entire data packets to a Google Sheets database at a periodic interval of 15 seconds without failure. Based on these results, the developed solar panel optimization system is feasible for implementation in maritime environments to enhance the utilization efficiency of renewable energy and the operational reliability of onboard systems.

The use of fossil-fueled vehicles has long been a major cause of exhaust emissions that pollute the air and exacerbate global climate change. In an effort to address this problem, Indonesia has begun developing electric vehicles as a more environmentally friendly alternative solution. Electric vehicles (EVs) are considered capable of reducing dependence on fossil fuels while simultaneously reducing air pollution levels. The Indonesian government has demonstrated its commitment to supporting electric vehicle development by issuing several strategic policies, including Presidential Regulation (Perpres) Number 55 of 2019 concerning the Acceleration of the Battery-Based Electric Motor Vehicle Program for Road Transportation, and Presidential Instruction (Inpres) Number 7 of 2022 concerning the Use of Battery-Based Electric Motor Vehicles as official vehicles for central and regional government agencies. In line with these policies, research was conducted to assess the power consumption efficiency of the Ken Dedes electric vehicle prototype, designed using a 250-watt DC motor and a mid-drive system. The main focus of this research was to analyze the effect of variations in module input voltage and gear size on the vehicle's power consumption level. The method used was an experimental approach with a quantitative approach, where a series of tests were conducted on several gear combinations and input voltage levels. The results of the study indicate that variations in these two parameters—gear size and input voltage—significantly affect motor power consumption. The most optimal combination in this study achieved a power consumption efficiency of 6 Wh/km. This figure demonstrates the most energy-efficient performance in vehicle operation and can serve as a benchmark for further development of similar electric vehicles. This research provides an important contribution to efforts to encourage the use of more efficient and sustainable electric vehicles in Indonesia.

This study aims to analyze the operational feasibility of providing child-friendly recreational facilities at airport terminals to enhance service quality or Level of Service (LoS). A qualitative approach based on a literature review was used to examine various sources and previous research to evaluate the urgency, impact, as well as design and implementation strategies for child-friendly facilities at airports. Facilities such as play areas, breastfeeding rooms, and child-friendly toilets are expected to improve the experience of passengers, particularly families traveling with children, by providing additional comfort during their time at the airport. The findings indicate that the presence of these facilities significantly contributes to improving user perceptions of the airport’s service quality. The psychological comfort of family passengers is also enhanced, with safe and comfortable spaces for children. This not only creates a more inclusive environment but also provides operational benefits such as better terminal space management and efficiency. Child-centered design plays a crucial role in improving facility quality, where modular design is seen as a practical solution to adapt the facilities to the evolving needs of the terminal. Moreover, collaboration with private sectors is considered a strategic approach to support the provision of these facilities, given the substantial investment required. The study concludes that investing in child-friendly facilities at airports is a strategic decision, as it has the potential to enhance the airport's competitiveness. Well-designed facilities also improve user satisfaction and create a more comfortable travel experience. These findings are expected to serve as a reference for airport managers and provide a foundation for future research that quantitatively measures the impact of these facilities.

This research start with the service quality problem regarding those who wish to visit again. This research employed a descriptive research design using quantitative data. This research used both primary and secondary data sources. Tourists at the Nyarai Lubuk Alung Waterfall tourist attraction make up the research population. Using non-probability sampling techniques, the research sample consisted of 276 consumers. Purposive sampling research is the type that is carried out. A Likert scale questionnaire that has gone through validity and reliability testing is used as a collection for data tool and then processed with SPSS 25.00. The results of this research shown that service quality is in the quite agree category, namely 51.81%. Furthermore, the variable desire to visit again is in the agreed category, namely 35.51%. The impact of service quality (X) influences the desire to visit again (Y), with a score of 11.1% and 88.9% influenced by other factors. Additionally, the results of the multiple linear regression analysis yielded a t value of 0.450 with sig. 0.000 < 0.05 and a calculated F value of 1.203 with sig. 0.000 < 0.05, indicating a significant effect of the service quality variable on the desire to return.

This study aims to describe the management of the Keceme Drinking Water Supply System SPAM as an effort to overcome drought in Waru Hamlet, Girisekar Village, Panggang District, Gunungkidul Regency, Special Region of Yogyakarta. The drought problem in the area has been going on for a long time, thus demanding a sustainable solution to meet the community's clean water needs. This study uses a qualitative approach with data collection techniques through observation, in-depth interviews with SPAM managers and the community, and documentation. Data analysis was carried out with reference to George R. Terry's management theory which includes four management functions, namely planning, organizing, actuating, and controlling. The results show that the existence of the Keceme SPAM greatly helps the community in obtaining access to clean water, although various obstacles still exist. The main obstacles include planning that is mostly not documented in writing, limited number and capacity of human resources in management, technical problems in the form of lime deposits that disrupt water flow, and high operational and maintenance costs of the network. However, the existence of social capital in the form of a spirit of mutual cooperation among the community, as well as policy support and facilities from the village government, are important factors driving the sustainability of SPAM management. This research is expected to provide practical contributions as a reference for other regions facing similar challenges, particularly in optimizing the use of local water sources as a sustainable drought mitigation strategy.

Climate change and air pollution are necessitating a transition towards sustainable transportation. However, the adoption rate of electric motorcycles in West Kalimantan remains low. This study aims to analyze the factors shaping the intention to adopt electric motorcycles in this region using an extended Technology Acceptance Model (TAM) framework. A quantitative method was employed, involving a survey of 200 respondents selected through purposive sampling, with the data analyzed using Structural Equation Modeling (SEM). The results indicate that perceived usefulness and perceived ease of use have a positive and significant influence on adoption intention. Notably, perceived ease of use emerged as the most dominant determinant, not only directly impacting intention but also indirectly influencing it through perceived usefulness. Among the external variables, compatibility was found to enhance perceived usefulness, while enjoyment positively affected perceived ease of use. Conversely, resource availability did not significantly shape initial perceptions. The implications of these findings suggest that stakeholders should prioritize strategic communication that highlights the ease of use, enjoyable riding experience, and functional benefits of electric motorcycles. These efforts should be supported by policies aimed at accelerating infrastructure development and providing incentives to encourage broader adoption.

This study aims to assess the quality and impact of supporting tourism facilities at Sisingamangaraja XII International Airport in strengthening the development of Lake Toba as a Super Priority Destination. The airport holds a strategic role as the main gateway for tourists visiting the Lake Toba area, making the quality of services and the completeness of facilities crucial aspects in creating a memorable travel experience. The research employed a qualitative approach with data collected through in-depth interviews with key informants, direct field observations, and documentation. Data analysis was conducted using the (SERVQUAL) model, which evaluates five key dimensions: tangibles, reliability, responsiveness, assurance, and empathy. The findings reveal that the airport has provided several tourism-supporting facilities, including ground transportation services, food and beverage outlets, as well as souvenir and gift shops. However, the implementation of these facilities has not yet reached optimal performance. Identified challenges include the limited choice of transportation options to and from various tourist destinations, the lack of authentic Lake Toba culinary offerings at food and beverage outlets, and the insufficient promotion of local products at souvenir shops. Furthermore, the absence of essential services such as travel agencies and money changers has negatively affected convenience, particularly for international tourists who require accessible information, transactions, and travel services. These findings indicate that improving supporting facilities at Sisingamangaraja XII International Airport is an urgent necessitySuch efforts are expected to enhance the quality of airport services, increase tourist satisfaction, and ultimately reinforce Lake Toba’s position as a leading national and international tourism destination.

The Hazard and Operability (HAZOP) methodology is a qualitative risk analysis technique commonly used to detect potential work hazards. CV. Suryadi Sentosa, also known as Bapak Suryadi's Home Tempe Industry, is a home-based business that produces tempeh. Almost all of the production procedures are still carried out manually, and occupational accident analysis measures have not been implemented. The factory conditions indicate inadequate lighting and ventilation, as well as relatively slippery floors. It is also observed that the industry workers do not pay much attention to their posture, and they do not use personal protective equipment (PPE). This research was conducted directly at the CV. Suryadi Sentosa Tempe Factory, using interviews and observations of seven workers involved in the production process. The steps taken in this study are compiling the sequence of the production process. By using a Hazard and Operability (HAZOP) worksheet, identify potential risks, conduct risk control analysis, monitor and evaluate, implement improvements, and draw conclusions. The analysis found 9 stages of tempeh production at Mr. Suryadi's facility. Several improvements are needed, including involving several workers to handle soybean processing, creating ventilation to provide good and healthy air circulation for workers, adding lighting as a light source so that workers can perform their tasks comfortably, and using ergonomic chairs and work tables to prevent fatigue and increase factory productivity.

Cardiac arrest is a medical emergency that results in the sudden cessation of heart function, leading to more than 7 million deaths worldwide annually. In Indonesia, its prevalence is not well-documented. Ischemic heart disease is the primary cause, with other risk factors like hypertension, diabetes, obesity, and smoking also contributing. Clinical signs include loss of responsiveness, impaired breathing, and the absence of a pulse. Diagnosis is based on history, physical examination, electrocardiography, laboratory tests, and imaging to determine the underlying cause. Treatment follows the 2020 American Heart Association (AHA) guidelines, starting with basic life support (BLS), followed by Advanced Cardiac Life Support (ACLS). ACLS includes high-quality cardiopulmonary resuscitation (CPR), early defibrillation for shockable rhythms, epinephrine administration, and airway management through intubation. Once Return of Spontaneous Circulation (ROSC) is achieved, post-cardiac arrest care is crucial, including hemodynamic stabilization, Targeted Temperature Management (TTM), and critical care to prevent recurrence and neurological damage. A clear understanding of cardiac arrest's diagnosis, risk factors, and management is vital for reducing mortality. Adherence to AHA guidelines, especially rapid resuscitation, improves survival rates, making continuous CPR education essential for healthcare providers and the public.

Water is a basic, irreplaceable human need, so its management must be effective, efficient, and sustainable. The Tanarawa Village Government, through the Village-Owned Enterprise (BUMDes), manages the Regional Drinking Water Company (PDAM) to meet the community's clean water needs. However, various obstacles remain, ranging from suboptimal water quality, uneven distribution, and customer complaints. This situation raises questions about the extent to which service quality and complaints influence customer satisfaction at the Tanarawa Village PDAM, Waiblama District, Sikka Regency. This study aims to: (1) describe the service quality of the Tanarawa Village PDAM, (2) identify the types of complaints submitted by customers, and (3) analyze the influence of service quality and complaints on customer satisfaction. The research method used was a descriptive quantitative approach using a survey technique. Data were collected through questionnaires from 30 respondents who were customers of the Tanarawa Village PDAM. Data analysis included validity and reliability tests, multiple linear regression analysis, hypothesis testing, and coefficient of determination. The results of the study, based on descriptive analysis, indicate that service quality, complaints, and satisfaction are categorized as "Good," although there are still shortcomings in response speed, consistency of water distribution, and staff reliability. Customer complaints predominantly concern frequent interruptions in water flow, poor water quality, and slow response times, requiring improvement to Very Good. Statistical analysis of the effect of service quality on customer satisfaction shows a t_(count) > t_table = 3.325 > 1.99, concluding that service quality significantly influences customer satisfaction. Furthermore, statistical analysis of the effect of complaints on customer satisfaction also yielded a t_(count) > t_table = 3.917 > 1.99, concluding that customer complaints have a significant impact on satisfaction levels. Thus, this study confirms that consistent improvements in service quality and prompt and resolute complaint handling are important factors in increasing customer satisfaction. The results are expected to provide strategic input for the Tanarawa Village Water Company (PDAM) in improving its service system and strengthening relationships with the community.

Air memiliki peran penting dalam banyak narasi di dalam Perjanjian Lama, berfungsi sebagai simbol yang kuat dari penciptaan, pemurnian, dan pembebasan. Penelitian ini mengkaji simbolisme air yang multifaset, menjelajahi implikasi spiritual, sosial, dan ekologisnya dari kisah penciptaan hingga pembebasan bangsa Israel dari Mesir. Dengan menggunakan analisis kualitatif terhadap teks-teks alkitabiah dan interpretasi ilmiah yang relevan, penelitian ini bertujuan untuk mengungkap makna yang lebih dalam dari air dalam narasi-narasi ini dan bagaimana makna tersebut beresonansi dengan isu-isu kontemporer terkait keberlanjutan dan pengelolaan sumber daya. Temuan menunjukkan bahwa simbolisme air melampaui konteks alkitabiah, menawarkan wawasan tentang tantangan modern terkait dengan kelangkaan air dan pengelolaan lingkungan.

Semarang City has experienced significant growth over the past five years (2020 – 2025). Rapid urban development has been positively correlated with increasing environmental burdens, particularly in solid waste generation. In Indonesia, the largest portion of municipal waste consists of food waste, followed by plastic waste. Among these, plastic waste is the most difficult to manage. It is estimated that around 70% of Indonesian households still burn their waste as a means of disposal. The burning of waste, especially plastics, releases toxic emissions such as dioxins, furans, and fine particulates, which pose serious health risks, particularly to the respiratory system. This practice not only worsens air quality but also threatens public health. This community service program focused on providing education about the thermal properties of waste and the negative impacts of plastic burning on both the environment and human health. The program aimed to improve public knowledge of the thermal characteristics of various types of waste and the hazards of plastic burning through accessible scientific outreach. The initiative is expected to raise awareness and understanding of environmentally friendly waste management alternatives such as waste separation, composting, and recycling. The activity was conducted in RW 01, Tugurejo Village, Tugu District, Semarang City.

This research aims to analyze the financial performance of the Koperasi KSP Kopdit Pintu Air Kewapante Branch using the Sustainable Growth Rate (SGR) approach. This type of research is quantitative, using financial report data from KSP Kopdit Pintu Air Kewapante for the period of 2020 to 2024. The data is analyzed by calculating the Retention Ratio (RR), Return on Equity (ROE), and the Sustainable Growth Rate (SGR) value each year. The results show that the highest SGR value was achieved in 2021 at 11.04%, while the lowest value occurred in 2023 at 0.70%. Generally, the SGR trend showed fluctuations, with a decreasing trend after 2021. This is attributed to the decline in profitability and the cooperative's ability to retain earnings. This finding indicates that although KSP Kopdit Pintu Air Kewapante Branch has a fairly good financial performance, the sustainability of its financial growth needs to be anticipated with more optimal management strategies. This study proves that the Sustainable Growth Rate approach can be used as a quantitative measuring tool to assess the financial performance of cooperatives and provide a basis for strategic decision-making.

This study originates from the difficulties student pilots encounter when deciding to perform a go-around during unstable strong wind (gusty wind) conditions, especially on the runway at Banyuwangi Airport. The go-around procedure is a vital element in maintaining flight safety, but for inexperienced students, the decision is often challenging and influenced by multiple factors. The purpose of this research is to explore and analyze the aspects that affect student pilots’ considerations when faced with gusty wind situations. Using a descriptive qualitative method, data were gathered through semi-structured interviews with both student pilots and flight instructors. The findings reveal that several elements play key roles in shaping decision-making, including the level of flight experience, the application of aeronautical decision-making (ADM) principles, situational awareness in rapidly changing conditions, and the psychological pressures experienced during critical phases of flight. These insights emphasize the importance of strengthening pilot training programs, particularly in weather-related decision-making scenarios. By integrating structured ADM training and enhancing awareness of environmental factors, student pilots can be better prepared to respond to challenging conditions. The outcomes of this research are expected to support improvements in aviation education, reduce potential risks, and foster a stronger safety culture among future pilots.

The DH Building of the Electrical Engineering Study Program at Udayana University faces significant challenges in energy efficiency, as it still relies on conventional electrical systems. User negligence, such as forgetting to switch off lights and air conditioners (AC) after use, often results in unnecessary energy waste and increased operational costs. This issue highlights the urgent need for smart solutions capable of automating energy management, reducing waste caused by human error, and supporting the creation of a more efficient and sustainable campus environment. To address this problem, this study designs and implements a smart building system based on the Internet of Things (IoT). The system employs a NodeMCU ESP32 microcontroller as the main processing unit, integrated with a series of sensors including a DHT22 sensor for monitoring temperature and humidity, an MQ2 sensor for smoke detection, a PIR sensor for motion detection, and a PZEM-004T sensor for monitoring energy consumption. Control of electronic devices such as lights and AC units is carried out both automatically and manually through relay modules connected to the system. All sensor data and control functions are accessed via a web interface developed using the Laravel framework and a MySQL database. The testing results indicate that the designed system was successfully implemented and functions as expected. Sensor testing demonstrated high accuracy compared to standard measuring instruments, while the electronic device control system achieved an average response time of approximately 3.6 seconds, proving its reliability. Overall, the system provides a comprehensive solution for energy consumption monitoring and control, while also enhancing comfort and safety in the DH Building, in line with the goals of energy efficiency and facility modernization.

The increasing number of students in major cities such as Medan has created an urgent need for temporary housing that is adequate, comfortable, and sustainable. In response, the Indonesian government, through the Ministry of Public Works and Public Housing (PUPR), launched the "One Thousand Towers Program," which includes the development of rental apartment buildings (Rusunawa) for students. However, housing provision must go beyond quantity—it must also consider environmental aspects and the quality of life for its occupants. Therefore, a green architecture approach serves as the foundation for the design of environmentally friendly student housing. This project aims to create a vertical residential facility that not only fulfills the basic function of shelter but also supports learning activities, social interaction, energy efficiency, and environmental sustainability. The design applies key principles of green architecture such as natural lighting, cross ventilation, the use of eco-friendly materials, and the integration of green open spaces. In addition to double-room residential units, the building is equipped with supporting facilities such as study areas, a library, cafeteria, and rooftop garden. The design methodology integrates both primary and secondary data analysis, as well as a comprehensive site study covering climate, noise levels, circulation, and building orientation. The building form concept is developed modularly and efficiently through mass transformation, resulting in an inner court that provides natural light and air. Supported by energy-saving utilities, this design is expected to offer a student housing solution that is not only functional and aesthetic but also contributes to sustainable and high-quality urban development.