In encrypted databases, sensitive data is protected from an untrusted server by encrypting columns using partially homomorphic encryption schemes, and storing encryption keys in a trusted client. However, encrypting columns and protecting encryption keys does not ensure confidentiality sensitive data can leak during query processing due to information flows through the trusted client. In this p...

The relationship between client-server distributed computing and message-passing parallel processing is explored in this work through an experimental RPC framework for the PVM system. The project investigates the potential for RPC to complement asynchronous message passing in PVM { both to expand the domain of applications, and to evaluate the eeectiveness of client-server computing for traditi...

The benefits of Web cache prefetching are well understood, and so prefetching has been implemented in a number of commercial products. This paper argues that the current support for prefetching in HTTP/1.1 is insufficient because prefetching with GET is not good. Existing prefetching implementations can cause problems with undesirable side-effects and server abuse, and the potential for these p...

Analytical approximations are developed to determine the time-dependent offered load (effective demand) and appropriate staffing levels that stabilize performance at designated targets in a many-server queueing model with timevarying arrival rates, customer abandonment from queue and random feedback with additional delay after completing service. To provide a flexible model that can be readily ...

In this paper, we propose a new notion called k-times attribute-based anonymous access control, which is particularly designed for supporting cloud computing environment. In this new notion, a user can authenticate himself/herself to the cloud computing server anonymously. The server only knows the user acquires some required attributes, yet it does not know the identity of this user. In additi...

Peer-assisted live streaming is a promising way for service providers to offer high-quality IPTV to consumers at reasonable cost. In peerassisted streaming, the peers (e.g., running on set-top boxes) exchange video chunks with one another, and receive additional data from the central server as needed. In this paper, we analyze how to provision resources for the streaming system, in terms of the...

An important trend in today’s economy is to reduce the carbon footprint of organizations, businesses and households. Modern technologies, including ICT solutions, contribute reduction CO2 production. The article focuses on potential using cloud computing model managing a modern intelligent city. city offices have an extensive IT infrastructure. With emergence new services provided online by off...