Article | 2021-07-30
Article | 2021-07-30
Article | 2021-07-29
The space Internet constellation system is an important component of China’s space information infrastructure and has become a focus of international competition in future. However, China is still in the preparatory stage of the space Internet constellation system construction. We started late and are faced with many risks such as a backward space resource position, lack of independent standards, a weak foundation for technological development, limitation in traditional application fields, and uncontrollability of network security; therefore, China’s space Internet constellation system is still far from supporting rapid economic and social development. Facing the opportunities and challenges, we overview the space Internet constellation system development in China and analyze the macro demand for space Internet construction. Subsequently, we analyze the development trend of the system both in China and abroad and propose the development ideas, key tasks, and technical routes of the space Internet constellation system construction in China. To improve the service abilities of China’s space information network and establish a flexible space system, we suggest that China should strengthen top-level planning at the national level in the design and engineering construction stages, accelerate the exploitation of space and frequency resources, formulate satellite Internet standards, intensify efforts to tackle key technologies, promote integrated and innovative applications, and build a network security and protection system.
Article | 2021-07-28
The seed industry is a basic and core industry that is strategically important for a nation. Considering the national guidance opinions on fields such as seeds and cultivated land, industrialization of biological breeding, and development of core technologies for germplasm resources, the seed industry has become a driving force for the rapid development of China’s agriculture. In this study, we summarize the current status of the global crop seed industry from the aspects of germplasm resources protection and utilization, biological breeding technology development, seed industry development, etc. Moreover, we analyze the problems of China’s seed industry from an international perspective. To promote the development of the seed industry, China should implement a national germplasm resources strategy to consolidate the foundation of its seed industry; implement a scientific and technological innovation strategy in the seed industry to achieve breakthroughs in original innovation; construct a seed industry system with Chinese characteristics to enhance industrial competitiveness; promote the role of enterprises in technological innovation; and modernize the supervision system to improve industrial advantages.
Article | 2021-07-28
The lagging informatization and intellectualization of the agricultural product postharvest supply chain is the main factor that results in low circulation efficiency and serious quality loss. Improvement on the postharvest added values of agricultural products necessitates the planning of intelligent logistics for agricultural products in China. In this study, we analyze the demand for intelligent logistics of agricultural products, summarize the development status, and investigate the problems existing in informatization, standards and quality, and professionals. Considering China’s conditions, we propose the development goals and key tasks of the intelligent logistics for agricultural products in China by 2035. The study shows that strengthening policy support, improving the standardization system, and promoting personnel training are the foundation for the intelligent logistics of agricultural product. The continuous innovation and extended application of the new-generation information technology has promoted the transformation and upgrading of traditional agricultural logistics toward intelligent agricultural logistics in China. In the future, an intelligent, integrated, and green supply chain will be the major development direction for intelligent agricultural logistics. This study can provide a basic reference for improving overall operation efficiency and upgrading service quality of the agricultural logistics industry.
Article | 2021-07-27
Hydrogen fuel cell is a key element for conversing hydrogen energy into electric power and has attracted increasing attention from the aspects of basic research and industrial application following the proposal of carbon neutral and carbon peaking. Focusing mainly on the hydrogen fuel cell technology system, we analyze the research progress and development trends of membrane electrode components (such as proton exchange membranes, electrocatalysts, and gas diffusion layers), bipolar plates, system components, and control strategies. Subsequently, we propose the development directions of the hydrogen fuel cell technology system by 2035, following the analysis of the development status of the hydrogen fuel cell technology in China in terms of localization rate, system lifetime, power density, and manufacturing cost. To accelerate the application of hydrogen energy and hydrogen fuel cell technology, we suggest that research on hydrogen production technology should be strengthened to reduce the cost of hydrogen fuel, the technological research and application of key materials and core components should be accelerated, and industrial plans with increased investment should be formulated to establish a complete policy support system.