Institute for Science and International Security学院科学与国际安全 International Satellites for Ionospheric Studies国际电离层研究卫星 Innovative Systems in Silicon (International Conference)创新系统在硅(国际会议) Information Society Initiatives in Standardization (IEEE)在信息社会规范(IEEE) International Species Information System国际物种信息系统 Institute for Software Integrated Systems软件集成系统研究所 International Security Information Service国际安全信息服务 Independent Schools Information Service私立学校信息服务处 Institute of Scrap Iron and Steel废钢铁协会 International Superconductivity Industry Summit国际超导产业峰会 Information Systems and Infrastructure Services (MITRE)信息系统和基础设施服务(冠冕) Internet Shopping Is Safe网上购物是安全的 Iowa Student Information System (University of Iowa)爱荷华州的学生信息系统(国立台湾师范大学) In-situ Storage Image Sensor现场储存图像传感器 Institute for Systems, Informatics, and Safety学院为系统、信息、和安全