Mobile Code applications Distributed Information Retrieval Active documents Advanced Telecommunication Services (video conferencing, video on demand) Remote Device Control and Configuration Workflow management and Cooperation Active networks E-Commerce 2021/24 Institute of Computer Software, Nanjing University 8 Distributed Information Retrieval  Active Documents  Advanced Telecommunication Services (video conferencing, video on demand)  Remote Device Control and Configuration  Workflow management and Cooperation  Active networks  E-Commerce 2021/2/4 Institute of Computer Software, Nanjing University 8