Urban renewal raises great challenges for global sustainable development. However, there is a lack of integrated knowledge on how to improve urban sustainability through a low-impact development process for urban renewal. Through the integration of the driving forces–pressure-state-impact-response (DPSIR) and low-impact development (LID) framework, this paper presents a case study of urban renewal in Shanghai, China, to understand the sustainability of urban renewal from a dynamic and integrated perspective. The findings of this paper are (1) the dynamic process of urban renewal raises high expectations on environmental quality, which implies more ecological limitations for urban economic activities; (2) the implementation of low-impact development needs a comprehensive approach for urban planning, which requires the integration of multiple plans such as urban master plan, eco-environmental plan, transportation plan, and infrastructure plan; and (3) the zoning management and technology selection should be of specific concern based on local characteristics. Several suggestions for sustainable urban renewal are then presented, including the determination of the ecological red line areas, the improvement of stakeholder involvement, and the promotion of information sharing and tailored evaluation.

Petroleum has become a strategic resource to the national economy, and forecasting its demand is a critical step to supporting energy planning and policy-making for carbon reduction. We first conducted a characteristic analysis of end consumption for petroleum products, and the key affecting factors are identified through an extended logarithmic mean Divisia index (LMDI) method. Afterwards, the long-range energy alternatives planning system (LEAP) was adopted to predict the petroleum products demand by considering the potential impacts of different policies on the identified key factors. Through comparative analysis of three scenarios including five sub-scenarios, the findings show that the dual carbon constraints are crucial to petroleum demand control. Under the enforcement of existing carbon peaking policies, the petroleum products demand will peak around 2043 at 731.5 million tons, and the impact of energy intensity-related policies is more significant than that of activity level. However, even if the existing policy efforts are continued, supporting the carbon-neutral target will not be easy. By further strengthening the constraints, the demand will peak around 2027 at 680 million tons, and the abatement contribution will come mainly from industry (manufacturing), construction, and transportation. Additional abatement technologies are necessary for the petroleum industry to achieve carbon neutrality.

With the rapid development of Information and Communication Technology (ICT), the fifth generation communication technology (5G) has become the focus of the field and it has been given great hope to change the way of human life. Base stations, as the key facilities of communication technology, are facing great challenges of upgrading. In one hand, the power consumption increases in Macro base stations, in the other hand, as the frequency increases, the coverage of single 5G decreases. It is discussed the difficulties of large-scale power supply for the 5G base station and analyzes several solutions to solve the problem of power supply for the 5G base station in this paper. At the same time, this paper also introduces the progress of 5G standardization in International Telecommunication Union (ITU) and in China Communications Standards Association (CCSA).