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Searchable encryption is a cryptographic primitive that allows a user to confidentially store items on an outside server and grants the user the capability to search for any particular item that is stored without the server or any third party observers learning anything with regards to the item that is being searched for. In 2006, Curtmola et al. strengthened the security notions for symmetric-key...
Discovery Service (DS), used to trace the movement of objects along supply chains, is an important component of the Internet of Things (IoT). DS is faced with the challenge of huge volume of data as well as large amount of parallel requests of discovery and publish. This paper proposes a new central-indexing DS system using distributed NOSQL database HBase to better support big data and parallel processing...
Facing the massive data rapidly growing in the data centers, deduplication storage system continuously confronts the challenges in providing the corresponding throughputs, necessary capacities to move backup data within backup and low recovery window times. One approach is to construct a well design deduplication clusters which includes many high throughputs data nodes to generate an allover throughputs...
Recently many organizations have accumulated data from such various sources as web and network sensors and constructed large-scale archives. Some would like to publish their archives to public to facilitate the activities of other organizations, but the scale of the archives causes problems. Therefore, we propose the concept of data-intensive services, which publish large-scale archives. We show the...
In this paper, we present a novel method for image annotation and retrieval on mobile device by using contextual information. Image annotation is an effective way for content based image retrieval. However, manual annotation is an expensive and time consuming work, especially for mobile device. Here, we propose a semi-automatic way to give image annotation on mobile device. There are rich contexts...
In this paper, we present Content-Oriented Network with Indexed Caching (CONIC), a deployable and self-scaling architecture to exploit spare storage and bandwidth from end-systems to eliminate redundant traffic and enable efficient and fast access to content. Our trace-driven simulation indicates that CONIC can reduce 25% to 50% traffic volume and can cumulatively halve the latency of content access...
In the last decade, automated physical design tuning became a relevant area of research. The process of tuning a workload became more flexible but also more complex, and getting the best design upfront became difficult. We propose a paradigm shift for physical design tuning, in which sessions are highly interactive, allowing DBAs to quickly try different options, identify problems, and obtain physical...
The Peer-to-Peer streaming media transmission technology has become a hot spot of computer research field. This paper introduces the architecture of P2P streaming media transmission system based on neighborhood optimum selection, studies acquisition and transmission of streaming media data and lays stress on the neighborhood optimum selection. Various heterogeneous media resources will be collected...
In this paper, we propose a hierarchical architecture to realize a real-time file search in P2P systems. The proposed architecture consists of three layers. Index of files held by the peers in the bottom layer is stored at the peers in the middle layer, and the correlation of peers in the two bottom layers is controlled by the peers in the top layer using the notion of tags. With such notion of tags,...
The Barn project, a spatial data grid prototype under development currently, provides a grid environment for applications of the nationwide geological survey data. Within Barn, in order to reduce data access latency, avoid a single point of failure, and increase the performance and load-balance of the system, we have designed and implemented a set of replica management services. These services, based...
This paper proposes PosPush, a highly accurate location based information delivery system, which utilizes the high resolution 3D locations obtained from ultrasonic positioning devices to efficiently deliver the location based information to users. This system is designed especially for applications where a 3D space is partitioned into a set of closely neighboring small zones, and as a user moves into...
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