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• 1. [Article] InfoFilter: Supporting Quality of Service for Fresh Information Delivery

  With the explosive growth of the Internet and World Wide Web comes a dramatic increase in the number of users that compete for the shared resources of distributed system environments. Most implementations ...

  Citation × Citation Citation Abstract Copy Title: InfoFilter: Supporting Quality of Service for Fresh Information Delivery Author: Liu, Ling, Pu, Calton, Schwan, Karsten, Walpole, Jonathan Year: 2000 With the explosive growth of the Internet and World Wide Web comes a dramatic increase in the number of users that compete for the shared resources of distributed system environments. Most implementations of application servers and distributed search software do not distinguish among requests to different web pages. This has the implication that the behavior of application servers is quite unpredictable. Applications that require timely delivery of fresh information consequently suffer the most in such competitive environments. This paper presents a model of quality of service (QoS) and the design of a QoS-enabled information delivery system that implements such a QoS modeL The goal of this development is two-fold. On one hand, we want to enable users or applications to specify the desired quality of service requ.irements for their requests so that application-aware QoS adaptation is supported throughout the Web query and search processing. On the other hand, we want to enable an application server to customize how it shou.ld respond to external requests by setting priorities among query requests and allocating server resources using adaptive QoS control mechanisms. We introduce the Infopipe approach as the systems support architecture and underlying technology for building a QoS-enabled distributed system for fresh information delivery. Title: InfoFilter: Supporting Quality of Service for Fresh Information Delivery Author: Liu, Ling, Pu, Calton, Schwan, Karsten, Walpole, Jonathan Year: 2000 With the explosive growth of the Internet and World Wide Web comes a dramatic increase in the number of users that compete for the shared resources of distributed system environments. Most implementations of application servers and distributed search software do not distinguish among requests to different web pages. This has the implication that the behavior of application servers is quite unpredictable. Applications that require timely delivery of fresh information consequently suffer the most in such competitive environments. This paper presents a model of quality of service (QoS) and the design of a QoS-enabled information delivery system that implements such a QoS modeL The goal of this development is two-fold. On one hand, we want to enable users or applications to specify the desired quality of service requ.irements for their requests so that application-aware QoS adaptation is supported throughout the Web query and search processing. On the other hand, we want to enable an application server to customize how it shou.ld respond to external requests by setting priorities among query requests and allocating server resources using adaptive QoS control mechanisms. We introduce the Infopipe approach as the systems support architecture and underlying technology for building a QoS-enabled distributed system for fresh information delivery. Close

• 2. [Article] Moving Towards Massively Scalable Video-Based Sensor Networks

  Networking and computing technologies are becoming advanced enough to enable a wealth of diverse applications that will drastically change our everyday lives. Some past examples of these developments include ...

  Citation × Citation Citation Abstract Copy Title: Moving Towards Massively Scalable Video-Based Sensor Networks Author: Feng, Wu-chi, Walpole, Jonathan, Pu, Calton, Feng, Wu-chang Year: 2001 Networking and computing technologies are becoming advanced enough to enable a wealth of diverse applications that will drastically change our everyday lives. Some past examples of these developments include the World Wide Web and wireless data networking infrastructures. As is quite obvious, the World Wide Web has enabled a fundamental change in the way many people deal with day-to-day tasks. Through the web, one can now make on-line reservations for travel, pay bills through on-line banking services, and view personalized on-line newscasts. More recently, developments in wireless technologies have enabled anywhere, anytime access to information over wireless medium. As wireless technologies such as 3G continue to advance, the ability to support larger bandwidth applications will become possible. Sensor networks are becoming a fairly hot area of research where the main focus is the development of networking technologies that support potentially thousands of sensors placed in a chosen environment [Estrin99]. Thus far, the sensors that have been described in the literature (and in some limited use) typically measure simple things such as humidity, temperature, or pressure. This results in a fairly limited amount of data generated, even over thousands of sensors. Now, if we look ten years into the future when video capture devices will most likely be small and inexpensive (with limited processing capabilities), the ability to create video-based sensor networks will be possible. Video-based sensor networks can be used for a great number of applications that would undoubtedly revolutionize the way we go about our day-to-day lives. Title: Moving Towards Massively Scalable Video-Based Sensor Networks Author: Feng, Wu-chi, Walpole, Jonathan, Pu, Calton, Feng, Wu-chang Year: 2001 Networking and computing technologies are becoming advanced enough to enable a wealth of diverse applications that will drastically change our everyday lives. Some past examples of these developments include the World Wide Web and wireless data networking infrastructures. As is quite obvious, the World Wide Web has enabled a fundamental change in the way many people deal with day-to-day tasks. Through the web, one can now make on-line reservations for travel, pay bills through on-line banking services, and view personalized on-line newscasts. More recently, developments in wireless technologies have enabled anywhere, anytime access to information over wireless medium. As wireless technologies such as 3G continue to advance, the ability to support larger bandwidth applications will become possible. Sensor networks are becoming a fairly hot area of research where the main focus is the development of networking technologies that support potentially thousands of sensors placed in a chosen environment [Estrin99]. Thus far, the sensors that have been described in the literature (and in some limited use) typically measure simple things such as humidity, temperature, or pressure. This results in a fairly limited amount of data generated, even over thousands of sensors. Now, if we look ten years into the future when video capture devices will most likely be small and inexpensive (with limited processing capabilities), the ability to create video-based sensor networks will be possible. Video-based sensor networks can be used for a great number of applications that would undoubtedly revolutionize the way we go about our day-to-day lives. Close