The exponential growths of the World Wide Web (WWW) users have made the deployment of proxy servers popular on a network with limited resources. WWW clients perceive better response time, improved performance and spee...The exponential growths of the World Wide Web (WWW) users have made the deployment of proxy servers popular on a network with limited resources. WWW clients perceive better response time, improved performance and speed when response to requested pages are served from the cache of a proxy server, resulting in faster response times after the first document fetch. This work proposes cyclic multicast as a scalable technique for improving proxy server performance for next generation networks. The proposed system uses a cyclic multicast engine for the delivery of popular web pages from the proxy server cache to increasingly large users under limited server capacity and network resources. The cyclic multicast technique would be more efficient for the delivery of highly requested web pages from the cache to large number of receivers. We describe the operation of the cyclic multicast proxy server and characterized the gains in performance.展开更多
The lack of current network dynamics studies that evaluate the effects of new application and protocol deployment or long-term studies that observe the effect of incremental changes on the Internet, and the change in ...The lack of current network dynamics studies that evaluate the effects of new application and protocol deployment or long-term studies that observe the effect of incremental changes on the Internet, and the change in the overall stability of the Internet under various conditions and threats has made network monitoring challenging. A good understanding of the nature and type of network traffic is the key to solving congestion problems. In this paper we describe the architecture and implementation of a scalable network traffic moni-toring and analysis system. The gigabit interface on the monitoring system was configured to capture network traffic and the Multi Router Traffic Grapher (MRTG) and Webalizer produces graphical and detailed traffic analysis. This system is in use at the Obafemi Awolowo University, IleIfe, Nigeria;we describe how this system can be replicated in another environment.展开更多
Energy has always been one of the fundamental elements in the growth of human society.It is crucial that we improve our energy management due to the ever-growing imbalance in demand-supply.The new wave in the energy s...Energy has always been one of the fundamental elements in the growth of human society.It is crucial that we improve our energy management due to the ever-growing imbalance in demand-supply.The new wave in the energy sector is characterized by the three D's of decarbonization,decentralization,and digitalization.For a sustainable life,it is necessary that energy is tapped from alternative sources that are renewable to leave a minimal carbon footprint.To integrate different sources with the main power grid,we require two-way communication among them.This makes it indispensable that consumers are empowered to protect their privacy and make them the sole owners of their data.A good access control scheme would ensure security of data,and an efficient trading platform would ensure judicious use of the resources.Here,we propose a framework URJA with an access control scheme and an energy trading platform based on blockchain for a smart grid.The locally available renewable sources of energy are connected to the grid such that demand-supply is managed effectively without loss of efficiency and privacy.A customized consensus scheme based on trust ensures a quick operation in real-time.展开更多
文摘The exponential growths of the World Wide Web (WWW) users have made the deployment of proxy servers popular on a network with limited resources. WWW clients perceive better response time, improved performance and speed when response to requested pages are served from the cache of a proxy server, resulting in faster response times after the first document fetch. This work proposes cyclic multicast as a scalable technique for improving proxy server performance for next generation networks. The proposed system uses a cyclic multicast engine for the delivery of popular web pages from the proxy server cache to increasingly large users under limited server capacity and network resources. The cyclic multicast technique would be more efficient for the delivery of highly requested web pages from the cache to large number of receivers. We describe the operation of the cyclic multicast proxy server and characterized the gains in performance.
文摘The lack of current network dynamics studies that evaluate the effects of new application and protocol deployment or long-term studies that observe the effect of incremental changes on the Internet, and the change in the overall stability of the Internet under various conditions and threats has made network monitoring challenging. A good understanding of the nature and type of network traffic is the key to solving congestion problems. In this paper we describe the architecture and implementation of a scalable network traffic moni-toring and analysis system. The gigabit interface on the monitoring system was configured to capture network traffic and the Multi Router Traffic Grapher (MRTG) and Webalizer produces graphical and detailed traffic analysis. This system is in use at the Obafemi Awolowo University, IleIfe, Nigeria;we describe how this system can be replicated in another environment.
文摘Energy has always been one of the fundamental elements in the growth of human society.It is crucial that we improve our energy management due to the ever-growing imbalance in demand-supply.The new wave in the energy sector is characterized by the three D's of decarbonization,decentralization,and digitalization.For a sustainable life,it is necessary that energy is tapped from alternative sources that are renewable to leave a minimal carbon footprint.To integrate different sources with the main power grid,we require two-way communication among them.This makes it indispensable that consumers are empowered to protect their privacy and make them the sole owners of their data.A good access control scheme would ensure security of data,and an efficient trading platform would ensure judicious use of the resources.Here,we propose a framework URJA with an access control scheme and an energy trading platform based on blockchain for a smart grid.The locally available renewable sources of energy are connected to the grid such that demand-supply is managed effectively without loss of efficiency and privacy.A customized consensus scheme based on trust ensures a quick operation in real-time.
