There has been a rapid increase in demand for premium and safe agricultural products. Protected systems, such as greenhouses, are being adopted to meet demand. Ease in environmental regulation required for optimal plant growth is one of the advantages of protected systems. However, drawbacks such as poor ventilation in greenhouses can be fatal to the human workforce. This has led to the development of robots for hazardous tasks. Considering mobile robots are required to navigate down every aisle to perform a task in a greenhouse, and it is difficult to predict at which point the robot will need to return to the start point, to offload or refill for transportation and spraying schedules, respectively or battery charges. It will be commercially constraining to manufacture robots for every greenhouse specification. Efficient navigation can be done through path planning or layout design. In this paper, the greenhouse layout optimization problem was formulated to find optimal points on each bed to create an access path that would enable a reduction in the total travel time from all points in the greenhouse to the base point. The optimization problem was solved using differential evolution (DE), an evolutionary algorithm. Furthermore, we considered: 1) required space for inter-bed and rotary robot navigation; 2) standard bed specification; 3) area of the greenhouse; and 4) base point for starting and terminating navigation. The applicability of the proposed method was demonstrated by carrying out the experimental simulations on several greenhouse sizes.

No abstract

No abstract

COVID-19 has disrupted all aspects of human life. To mitigate the impact of the pandemic, several efforts have been taken, including by Indonesian scholars abroad. This book entitled Indonesia Post-Pandemic Outlook: Environment and Technology Role for Indonesia Development explores environment and technology issues and topics related to the COVID-19 pandemic and discusses post-pandemic recovery efforts in Indonesia. Comprising of 19 chapters, this book is divided into four sections. The first section, disaster and greening management development, discusses insights for a better solution in disaster prevention and development of greening management. Second, waste and pollution management development, explores options in development of waste and pollution management such as potentials uses of membrane technology, remediation of textile dyes, biochar industry, and also discussion on persistent organic pollution and microplastics. Third, food defense and security development, explores the potentials of food security and management in utilizing the potential of coastal sand marginal land resources, IoT and smart packaging, and smart food supply chain. The last part, human resource and public service development, discuses developments on management of education system, public transportation, e-government, and health information system. We hope that this book can be a valuable reference for stakeholders, policymakers, as well as society to recover from the pandemic crisis and find better solutions to benefit future generations.