征稿通知：首届AI+ 社会治理·青年学术论坛（2025） Call for Papers : AI+ Social Governance-Youth Academic Forum 2025 at PKU Call for Papers for the 9th PKU Graduates Student Forum of Ageing and Health Organising Committee for the 9th PKU Graduates Student Forum on Ageing and Health CFPs： the 2nd Older Adults-oriented Volunteer and Public Welfare Academic Forum (Beijing, Dec. 7th, 2024) (1st round notice) 第二届老龄志愿与公益服务学术论坛征稿通知（首轮）