Research on the distributive effects of China's basic old-age insurance in the transition period 并列题名：Research on the distributive effects of China's basic old-age insurance in the transition period Research on distributive justice and disadvantaged groups in the transition period research on the public credibility of TV media during the transition period Research on the distribution effects of fiscal policy in China Research on the diversified development of public sports service supply subjects in China during the transition period Research on executive compensation plan in transition period Research on the welfare distributional effects of China's social medical insurance system Research on the demand and policy of basic old-age insurance for rural residents in China