http://hdl.handle.net/1721.1/1790 Research to identify and shape solutions to technical, economic, or policy hurdles slowing the Internet's evolution as a global communications infrastructure http://dspace.mit.edu:80/retrieve/206 http://hdl.handle.net/1721.1/1790 http://hdl.handle.net/1721.1/38469 The Legacy of the Precautionary Principle In US Law: The Rise of Cost Benefit Analysis and Risk Assessment as Undermining Factors in Health, Safety and Environmental Protection Ashford, Nicholas http://hdl.handle.net/1721.1/1543 Supporting Real-Time Applications in an Integrated Services Packet Network: Architecture and Mechanism Clark, David D. Shenker, Scott Zhang, Lixia This paper considers the support of real-time applications in an Integrated Services Packet Network (ISPN). We first review the characteristics of real-time applications. We observe that, contrary to the popular view that real-time applications necessarily require a fixed delay bound, some real-time applications are more flexible and can adapt to current network conditions. We then propose an ISPN architecture that supports two distinct kinds of real-time service: guaranteed service, which is the traditional form of real-time service discussed in most of the literature and involves pre-computed worst-case delay bounds, and predicted service, which uses the measured performance of the network in computing delay bounds. We then propose a packet scheduling mechanism that can support both of these real-time services as well as accommodate datagram traffic. We also discuss two other aspects of an overall ISPN architecture: the service interface and the admission control criteria. http://hdl.handle.net/1721.1/1542 Integrated Service in the Internet Architecture: An Overview Braden, Bob Clark, Dave Shenker, Scott This memo discusses an extension to the Internet architecture and protocols to provide "integrated service", i.e., to support real-time as well as best-effort IP service. This memo outlines a proposed technical framework and recommends steps towards engineering and deployment of Internet integrated service. This extension is necessary to meet the growing need for realtime service for multimedia applications. http://hdl.handle.net/1721.1/1541 Telecommunications @ Crossroads: The Transition from a Voice-centric to Data-centric Communication Network Mutooni, Philip K. Presentation version of MIT M.S. EECS/TP P Thesis, May 1997