This study focuses on the path planning algorithm for large-scale autonomous delivery using drones and robots in urban environments. When generating delivery routes in urban environments, it is essential that avoid obstacles such as buildings, parking lots, or any other obstacles that could cause property damage. A commonly used method for obstacle avoidance is the grid-based A* algorithm. However, in large-scale urban environments, it is not feasible to set the resolution of the grid too high. If the grid cells are not sufficiently small during path planning, inefficient paths might be generated when avoiding obstacles, and smaller obstacles might be overlooked. To solve these issues, this study proposes a method that initially creates a low-resolution wide-area grid and then progressively reduces the grid cell size in areas containing registered obstacles to maintain real-time efficiency in generating paths. To implement this, obstacles in the operational area must first be registered on the map. When obstacle information is updated, the cells containing obstacles are processed as a primary subdivision, and cells closer to the obstacles are processed as a secondary subdivision. This approach is validated in a simulation environment and compared with the previous research according to the computing time and the path distance.

Unreasonable carbon BRICS appear in the process of economic growth in the emission of the negative externalities of the typical characteristics, needs under the government strong interference can be effectively controlled. In this paper, we study the relationship between environmental quality and economic development of the BRICS by using the semi parametric regression model, and explore the effective path to promote the coordinated development of economy and environment in the BRIC countries by introducing relevant control variables to determine the main influencing factors of EKC. The results show that: most of the BRIC countries in the environmental quality and economic growth in the presence of decoupling phenomenon; due to the industrial structure, urbanization and energy consumption and other aspects of the existence of irrational phenomenon to reduce the environmental quality; The promotion of sustainable development helps to improve environmental quality and promote economic development. The policy recommendations of this research is that the BRICS should pay more attention to the quality of economic development and energy saving and emission reduction work, and should adopt the strong low-carbon technology development and application of financial investment, promote the construction of ecological civilization, strengthen international cooperation, strengthen supervision and law enforcement efforts and other measures to achieve sustainable development goals.

In an era of increasingly high integration of information technology and social life, the media is undergoing intelligent transformation and upgrading to meet the various intelligent needs of users in the future. In the future, the media wants to further seek development. It is necessary to carry out a corresponding path transformation for the backbone of media talents and journalists, and to promote the progress and development of the entire journalism through the transformation of the path of talent training in colleges and universities. Firstly, this article briefly expounds the era and environmental background that digital media talents training must be transformed. Secondly, it discusses the necessity analysis of the transformation of digital media talents in colleges and universities. Again, try to explore the value of talent and its important role in the vision of intellectual media. Finally, from the "complex + differential" training mode, "theoretical + practical" training mode, "scientific research-oriented" training mode, "industry competition-oriented" training mode, "technical construction-oriented" training mode, "domestic + foreign comprehensive" training mode and other aspects put forward the countermeasures and suggestions for the transformation path of digital media talents training in Colleges and universities.