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Aquaculture is a vital sector in global food production, providing essential protein sources. However, the industry faces significant challenges, including high energy consumption and environmental impact. The integration of renewable energy, particularly solar power, with automation and IoT systems offers a promising solution to enhance energy efficiency, sustainability, and productivity in aquaculture operations. This study aims to evaluate the effectiveness of solar powered autonomous systems in reducing energy usage, improving operational efficiency, and promoting environmental sustainability in aquaculture. Literature Review: Recent research has explored various technologies, such as Digital Twins (DTs) and Precision Fish Farming (PFF), which integrate IoT sensors for real time monitoring and optimization of fish farming operations. The combination of Artificial Intelligence (AI) and the Internet of Things (IoT), known as AIoT, has further advanced the industry by enabling automated decision making and predictive analytics. Solar power integration with IoT systems has been shown to significantly reduce operational costs, minimize carbon emissions, and enhance the sustainability of aquaculture practices. These advancements have the potential to address the challenges of energy consumption and environmental degradation in the industry. Materials and Method: This research utilizes a hybrid solar powered IoT system for aquaculture, integrating solar panels, IoT sensors, and automated control systems. The system monitors key water quality parameters, such as pH, dissolved oxygen, turbidity, and temperature, to maintain optimal conditions for aquatic life. Data is collected through IoT sensors and analyzed through a cloud-based platform. A pilot study is conducted on a small scale aquaculture farm to evaluate the system's performance, including energy consumption, water quality management, and fish health. Energy savings, operational efficiency, and environmental impact are assessed. Results and Discussion: The integration of solar powered IoT systems significantly reduced energy consumption compared to traditional systems, with a notable decrease in grid electricity reliance. The system successfully maintained optimal water quality conditions, enhancing fish health and growth. Solar powered systems proved reliable, even in regions with variable sunlight, and demonstrated improvements in operational efficiency through automation. The environmental benefits were evident, with a reduction in carbon emissions and lower operational costs. The study highlights the feasibility of solar powered IoT systems as a sustainable solution for modern aquaculture operations.

Introduction: The integration of Digital Twin (DT) technology and the Internet of Things (IoT) into Building Energy Management Systems (BEMS) offers a transformative approach to optimizing energy consumption in buildings. This study explores the development of a Digital Twin based BEMS prototype, which leverages real time data collection, predictive analytics, and machine learning to enhance energy efficiency, reduce costs, and support sustainability goals in modern buildings. The research also addresses key gaps in current energy management systems, including real time adaptive control and integration with smart grid platforms. Literature Review: Previous research highlights the limitations of traditional BEMS, which often rely on static control strategies and lack real time adaptability. Recent advancements, including predictive maintenance and machine learning integration, have improved energy optimization. However, challenges such as data interoperability, scalability, and cybersecurity remain. This review consolidates current approaches and identifies opportunities for enhancing BEMS through the integration of DT technology, IoT, and machine learning. Materials and Method: The methodology employed involves the design of a Digital Twin based BEMS prototype, incorporating IoT sensors for real time data collection on variables such as HVAC load, occupancy, and environmental factors. The system uses time series forecasting and adaptive control strategies to optimize energy consumption. A case study building is used for validation, with performance metrics such as energy savings, CO₂ footprint reduction, and peak load reduction assessed to evaluate the system's effectiveness. Results and Discussion: The results demonstrate a significant reduction in energy consumption (up to 50%) compared to traditional BEMS, along with improved forecasting accuracy and sustainability performance. The prototype achieved a high R² score in predicting energy usage, validated through real world application in the case study building. The economic feasibility analysis showed substantial cost savings and a strong return on investment, making the system a financially viable solution for energy efficient building management.

The integration of solar powered IoT irrigation systems in precision agriculture offers a sustainable solution to address water scarcity and enhance crop productivity. By leveraging real time data from soil sensors, weather APIs, and machine learning algorithms, these systems optimize irrigation schedules and improve water use efficiency. This research explores the potential of integrating renewable energy sources, such as solar power, with edge computing in smart irrigation systems to promote sustainable agricultural practices. The study aims to evaluate the performance of the proposed system in terms of water savings, crop yield, energy efficiency, and adaptability to varying climate conditions. Literature Review: Previous studies highlight the importance of smart irrigation systems in reducing water waste and improving crop yield through real time monitoring and automated decision making. However, existing systems often lack the integration of renewable energy and edge computing, which are critical for ensuring sustainability and operational efficiency in rural agricultural settings. The combination of renewable energy with IoT devices offers a promising solution to reduce energy costs and carbon emissions, while edge computing enhances real time data processing, ensuring prompt and accurate irrigation adjustments. Materials and Method: The proposed system integrates solar powered IoT devices, soil moisture sensors, weather data APIs, and edge computing devices to manage irrigation. Machine learning algorithms and evapotranspiration models are used to predict irrigation needs and optimize scheduling based on real time data. The system's performance is evaluated through metrics such as water savings percentage, crop yield improvements, and energy consumption, with a comparative analysis against traditional irrigation methods. Results and Discussion: The results indicate that the system successfully reduces water usage by 30% to 40%, increases crop yield by 25%, and operates with energy autonomy, powered entirely by solar energy. The system's adaptability to varying climate conditions ensures optimal crop growth, even under environmental stresses. The integration of renewable energy and edge computing significantly enhances the sustainability and efficiency of irrigation systems.

The growing environmental concerns and regulatory pressures on the shipping industry have prompted a shift towards the integration of green shipping technologies in managing international freight. This research investigates the adoption and effectiveness of these technologies, focusing on their role in reducing emissions, improving fuel efficiency, and enhancing the sustainability of global logistics. The study employs a mixed-methods approach, combining qualitative interviews with industry experts and quantitative analysis of freight operations data. The findings suggest that while green shipping technologies offer significant environmental benefits, their widespread adoption is hindered by high initial costs and regulatory complexities. Despite these challenges, the integration of sustainable practices in international freight management presents a promising pathway for achieving long-term environmental goals and improving industry competitiveness. The study highlights the need for collaborative efforts between shipping companies, policymakers, and stakeholders to overcome barriers and facilitate the adoption of green shipping technologies.

The advent of autonomous shipping is poised to revolutionize global maritime transport by enhancing efficiency, safety, and sustainability. This study investigates the current state and future prospects of autonomous vessels in the shipping industry. The primary objective is to analyze the technological advancements, regulatory challenges, and economic implications associated with the integration of autonomous ships. A mixed-methods approach, combining qualitative and quantitative research, was employed, including a review of relevant literature and case studies of existing autonomous shipping projects. The findings reveal that while autonomous ships offer significant benefits such as reduced operational costs, lower emissions, and fewer human errors, there are challenges related to legal frameworks, cybersecurity, and public acceptance. The implications of this research highlight the need for international cooperation and the development of new regulations to support the widespread adoption of autonomous shipping technologies. This transformation could lead to a more efficient, environmentally friendly, and cost-effective global maritime transport system.

Licensing is an important factor for investors when making an investment. To speed up and simplify the licensing process, the government created the Online Single Submission (OSS) system. In South Tangerang, the Department of Investment and One Stop Integrated Services (DPMPTSP) plays an important role in the coffee shop business licensing process. To open a coffee shop, a location permit, environmental permit, NIB and business trading permit through OSS are required. Obstacles in the licensing process often cause delays and difficulties for business actors. The aim of this research is to determine and analyze the effectiveness of applying for coffee shop business permits through Online Single Submission at the South Tangerang One Stop Integrated Services Investment Service. The method used in the research is a qualitative approach with descriptive research type. This research uses the theory of Thomas R. Dye (2013). The research results show that the indicators for setting clear goals have not been achieved optimally even though the goals of time efficiency and transparency of business permits through the OSS system are quite effective. In the results measurement indicators, positive results have been achieved, which can be seen from the success of OSS in increasing the number of NIBs by 10% from the previous year. Performance evaluation indicators are not optimal due to limited email, network and server constraints, apart from that the appearance and provisions of the OSS system also make it difficult for users to access the OSS system again. In the cost-benefit analysis indicator, it is quite efficient in reducing permit processing time and without any costs incurred. Contextual factor indicators provide a positive impact where the JOSS Program is a form of the South Tangerang government's commitment to assisting the community in licensing through the OSS system. The feedback and adjustment indicators have not been optimal in providing guidance and information to business actors, so there are still business actors who have not registered their business permits through this OSS system.

Plastic waste and the limited amount of agricultural land are big problems for the community, especially in rural areas such as Kayuares Hamlet and Ringinanom Village. The aim of this research is to develop a verticulture technique that uses used bottles to optimize the home yard. Tidar University KKN students provided instruction, training and implementation of a verticulture system using used bottles and PVC pipes. The results of the event show that people are more aware of the importance of using yards and managing plastic waste. In addition, a successfully implemented verticulture system increases land use efficiency and produces vegetable harvests that can help family food security by up to 70%. Limited water resources, high initial costs, and ongoing need for assistance are the main problems in implementing this method. The used bottle-based verticulture system allows communities to continue to develop sustainable agricultural methods that are environmentally friendly and economically profitable.

Rapid urbanization has led to an increased demand for food in urban areas. At the same time, land limitations and dependence on external supplies pose significant challenges to food security. Urban agriculture is an innovative solution for producing local food using limited land and modern agricultural techniques such as hydroponics, aquaponics, vertical farming, and rooftop gardens. This approach allows urban agriculture to be more resource-efficient, reduces distribution costs, and minimizes its environmental impact by lowering its carbon footprint. In addition to environmental benefits, urban agriculture also brings social and economic benefits by raising awareness of food sustainability, creating new business opportunities, and enhancing food independence in urban communities. This research uses a literature review method to examine various articles discussing the development, obstacles, and implementation of urban agriculture in different countries. The results show that urban agriculture makes an important contribution to improving food security while also providing a sustainable alternative for the global food system. Therefore, promoting the growth of urban agriculture from the perspective of sustainable food security requires support from government institutions, the private sector, and local communities.

Chili (Capsicum annuum L.) is a high-value horticultural commodity, but its productivity is often hampered by factors such as soil conditions, climate, pests and disease. The use of plastic mulch, especially the black-silver type, can increase chili yields by 25–40% through weed control, maintaining soil temperature, and reducing evaporation. Although initial costs are relatively high, significant yield increases can offset those costs. However, the resulting plastic waste is an environmental problem, so biodegradable mulch can be a more environmentally friendly alternative. This research uses a literature review method to collect and evaluate information from various relevant sources regarding the application of plastic mulch in increasing chili productivity. With proper management, plastic mulch can support increased chili yields and agricultural sustainability.

Agrotechnology plays a crucial role in increasing agricultural productivity through the implementation of modern innovations and technologies. Challenges such as land degradation, climate change, and limited natural resources can be addressed through precision technology, smart irrigation, biotechnology, and agricultural mechanization. This study employs a literature review method by analyzing various studies from 2019 to 2024 that discuss the impact of agrotechnology on agricultural yields. The findings indicate that the application of precision irrigation systems can enhance water use efficiency by up to 40%, while the use of genetically engineered superior crop varieties can increase yields and improve plant resistance to pests and diseases. Additionally, the utilization of digital technology, such as the Internet of Things (IoT), enables more efficient and data-driven land management. However, major challenges in implementing these technologies include limited farmer access, high investment costs, and low digital literacy among farmers. Therefore, policy support, financial incentives, and farmer training are necessary to ensure the widespread and sustainable adoption of technology. Thus, agrotechnology can serve as a primary solution for increasing agricultural productivity while maintaining environmental sustainability.

This study evaluates the impact of an AI-driven nutritional monitoring system in hospital settings, focusing on its effectiveness in reducing food waste and improving the accuracy of dietary assessments. Traditional food waste management and nutritional tracking methods in hospitals often suffer from inefficiencies, inaccuracies, and time constraints. In contrast, the AI-based system utilizes advanced technologies, including 3D scanners, digital scales, and image recognition, to optimize food production, minimize waste, and provide more accurate and timely nutritional assessments. The results of this study show a 31% reduction in food waste and a 40% improvement in the accuracy of nutritional assessments after implementing the AI system. This system enhances meal planning, portion control, and real-time tracking of food intake, offering personalized recommendations based on patient needs. The AI system also streamlines the nutritional assessment process, reducing labor-intensive procedures and providing real-time feedback to clinicians, which helps improve patient care and reduce errors associated with traditional methods. Furthermore, the environmental and financial implications of adopting AI technologies in healthcare are significant. The reduction in food waste not only helps lower hospital costs but also contributes to sustainability goals by reducing resource consumption, including water, land, and energy. This study underscores the potential of AI-driven systems to improve healthcare operations, support sustainability, and enhance patient outcomes. Future research should focus on expanding the application of AI in other healthcare sectors and further exploring its integration with other technologies for comprehensive healthcare solutions.

This qualitative literature review explores the impact of stringent environmental policies on environmental risk management and audit costs. It investigates the evolving role of environmental regulations in shaping corporate risk management strategies, particularly focusing on how businesses address environmental risks and the associated costs of audits. The review synthesizes findings from various studies, highlighting the importance of integrating environmental risk management into corporate governance structures to mitigate financial and legal risks. It also emphasizes the necessity of environmental audits in ensuring compliance with regulatory frameworks, despite their associated costs. The review concludes that while the initial costs of environmental audits may be high, their long-term benefits, including regulatory compliance, risk reduction, and improved stakeholder relations, justify the investment. Future research should address the challenges faced by SMEs and explore the geographical and sector-specific differences in managing environmental risks.

Organic fertilizers contain organic materials such as compost, manure, or other organic waste materials. When organic fertilizers are applied to the soil, they provide an abundant source of nutrients, including nitrogen, phosphorus, and potassium, as well as essential micronutrients. The community service activity program aims to empower farmers with the knowledge and skills to make organic fertilizers from local materials, which not only lower production costs but also improve soil quality and crop yields. The community service activity with the theme "Assistance and Making Organic Fertilizers in Reducing Fertilizer Costs for Farmers in Rowo Gempol Village, Lekok District, Pasuruan Regency" Through the Participatory Action Research method which includes preparation, processing, application, and evaluation, this program has succeeded in improving soil quality and supporting plant growth in the campus green area. Organic fertilizers, produced from campus organic waste such as dry leaves and food scraps, increase soil nutrient content and plant health, and reduce the negative impacts of synthetic chemicals. This activity also involves students in the process of processing and applying fertilizers, providing practical experience and raising awareness of the importance of sustainable agriculture and environmental management. The evaluation results showed a significant positive impact on soil quality and plant growth, with more fertile soil and healthier plants. In addition to the ecological benefits, the program plays an important educational role, by increasing students' understanding of environmentally friendly practices and organic farming skills. The success of this model is expected to be replicated in other villages. so that the benefits of this program can be felt more widely and support the creation of more sustainable agriculture.

The present study targets carrying out an analysis of economic and environmental returns as an effect of the adoption of a circular economy in Italy. Some of the key concepts it focuses on are promotion of private circular investment, export of recyclable material, use of circular material, eco-innovation, material footprint, and contribution of renewable energy to the total energy. The present study is supported by the systematic analysis of international data related to the role of circular economy in increasing economic efficiency and reducing environmental costs. The results highlight that private circular investment is highly relevant for the creation of new opportunities for economic development and supporting new, innovative sectors, such as recycling technologies. The results also underlined that eco-innovation plays a crucial role in improving resource efficiency, material footprint reduction, and renewable energy. The study confirms that the circular economy can be a strategic opportunity for Italy to further contribute to renewable energy and to reduce its imported natural resources dependence in a way that is both sustainable and economically competitive. The present study provides valuable insights for decision-makers and policymakers to promote circular economy strategies at national and international levels.

Organic waste management in rural communities, especially those dependent on the agricultural sector, is still a big challenge. Organic waste such as crop residues, leaves and household waste are often not utilized optimally, resulting in environmental pollution and wasted potential. Meanwhile, farmers' dependence on chemical fertilizers increases production costs and reduces soil quality in the long term. This service program aims to provide education and assistance to farmer groups in Nagari Harau regarding the use of simple composters as a solution for managing organic waste. A simple composter is a method that is easy to make, cost effective, and can produce compost that is rich in nutrients. A participatory approach is used in implementing this program to ensure active community involvement in the entire process, from waste collection, composting, to utilization of the results. Through this program, it is concluded that communities can be more independent in managing organic waste, reduce negative impacts on the environment, and increase productivity and overall welfare of farmers.

Soil fertility is a key element in the sustainability of agricultural systems that support global food security. One important soil microorganism that plays a role in improving soil fertility is Rhizobium, a bacterium capable of biological nitrogen fixation through a symbiotic relationship with leguminosae plants. This bacterium not only contributes to increasing soil nitrogen availability by 30-50% but also helps reduce dependence on synthetic nitrogen fertilizers, which has implications for reducing greenhouse gas emissions. Nonetheless, the effectiveness of Rhizobium is strongly influenced by environmental conditions such as pH, salinity, and chemical pollutants, which can inhibit its symbiotic ability. Technological innovations, such as nano-based formulations and the development of superior strains, offer solutions to improve the efficiency of Rhizobium, but challenges such as high costs and lack of policy support remain. In addition, the widespread use of Rhizobium inoculants may disrupt the balance of the soil microbial ecosystem, requiring further research. Therefore, integration of technology, policy and farmer education is needed to optimally utilize the full potential of Rhizobium while mitigating environmental risks, to support a more sustainable agricultural system.

Graphene is a two-dimensional lattice made of a single carbon atom and has extraordinary mechanical, electrical and thermal properties. These properties make it a very important material for a variety of applications, including energy management and electronics. This research adopts a systematic literature review approach to evaluate the role of graphene in improving battery performance and environmental sustainability. The results show that graphene significantly improves the performance of lithium-ion and lithium-sulfur batteries as well as sodium and magnesium-based batteries. In addition, graphene also has great potential for environmental applications such as water purification and pollutant adsorption. However, challenges such as production costs, toxicity, and scalability still need to be overcome for wider adoption.

Green Management has become an important strategy for companies to face environmental challenges while increasing competitiveness in the global market. This study aims to analyze the implementation of Green Management as a strategic approach in increasing the company's competitive advantage. The research method used is a literature review of various relevant previous studies, including the concept of Green Management, its impact on operational efficiency, product innovation, and corporate image. The results of the analysis show that the adoption of Green Management contributes significantly to reducing operational costs through energy efficiency and waste management. In addition, companies that implement sustainable practices succeed in creating added value for consumers, increasing customer loyalty, and strengthening market positions. This study also identifies several challenges, including initial implementation costs and organizational resistance, which can be overcome through government policy support and increasing environmental awareness among stakeholders. Thus, Green Management not only supports environmental sustainability goals but also provides strategic advantages for companies in the long term.