Narrow Results

Early warning signs of the outbreak of pandemic disease become a high profile from the beginning and they remind more susceptible individuals to keep social distance on social occasions. However, these signs have no way to the Susceptible–Infected–Recovered (SIR) models which have been concerned by medical scientists. Warning signs imply the risk level of the pandemic disease evaluated by the government. The response of susceptible population ($S$-population) to the warning signs is represented by a chicken game. In order to get a better payoff, the more beneficial behavior of the $S$-population may be induced in the autonomous society based on the SIR model. We emphasize that participants can choose their strategies whether to follow the health rules or not without coercion in the chicken game while the warning signs released by the policy makers can encourage $S$-population to choose beneficial behavior, instead of purely following the healthy rules or not. The agile policy helps $S$-population to make a choice on the basis of risk interests but without losing to protect themselves in a serious pandemic situation. Comparing the classic SIR model with our signal-SIR model, the serious pandemic signal released by the policy makers and the disease awareness to it together play an important role in the outbreak period of the pandemic disease.

The Pearl River Delta region is the frontier of China’s reform and opening up of the two megacities- Guangzhou and Shenzhen, have been faced with limitation of urban development land scale since the beginning of the twenty-first century. In order to tap potential of existing land resources, government in the two cities have promulgated policy documents for guiding urban renewal transformation since 2000. In this paper, it analyzed urban renewal policy documents (including regulations, rules, methods, etc.) of the two cities, compared key provisions related to not only industry instruction but also benefits distribution programs and mechanisms for industrial land renewal projects according to planning processes of specific projects. Based on the above research, it applied planning research method which is a combination of policy analysis and spatial analysis, and revealed function mechanism of policy implementation through industry adjustment and characteristics of projects in industrial land renewal. Finally, it was presented in the same context that the two cities- Guangzhou and Shenzhen had great differences in urban renewal policy system and the impact on specific project. But from the perspective of urban long-term development and spatial justice, they were both in the stage of realizing economic interests balance in urban renewal and had not assessed specific projects in terms of overall space fairness.