Data Aggregation is widely used technique in wireless sensor networks (WSNs). The Security become a major issue, data confidentiality and data integrity in data aggregation. data aggregation should be incorporated in order to save energy. In this paper, the secure data aggregation schemes are categorized into hop by hop aggregation and end to end aggregation, and then the secure data aggregatio...

While the revolutionary cloud computing paradigm offers substantial benefits to businesses, recent data breaches and the lack of dedicated end-to-end security solutions refrain the rapid adoption of this technology. The TREDISEC project aims at increasing trust in cloud computing by designing new security primitives ensuring data security and user privacy and supporting the underlying storage a...

Q Associates performed a series of tests and benchmarks to determine the effect of data center and system vibration on the I/O performance of an end-to-end compute environment. These tests revealed that ambient vibration inherent in a world-class, raised floor data center caused performance degradation of up to 246% for random reads and up to 88% degradation for random writes for an enterprise ...

Record linkage clusters records such that each cluster corresponds to a single distinct real-world entity. It is a crucial step in data cleaning and data integration. In the big data era, the velocity of data updates is often high, quickly making previous linkage results obsolete. This paper presents an end-to-end framework that can incrementally and efficiently update linkage results when data...

Ongoing work at National Aeronautics and Space Administration Goddard Space Flight Center (NASA/GSFC), seeks to apply standard Internet applications and protocols to meet the technology challenge of future satellite missions. Internet protocols and technologies are under study as a future means to provide seamless dynamic communication among heterogeneous instruments, spacecraft, ground station...

Link-layer retransmission is a feature of IEEE 802.11 standard protocol that aims to increase the reliability of data communications. However, when successive retransmissions fail, they add to the traffic congestion, raise the collision probability, and increase the end-to-end delay. Using our 4-hop wireless mesh network testbed, we evaluate the impact of link-layer retransmissions on the perfo...

Clustering neighbouring nodes of an all-optical core network into medium-sized rings controlled by a master node allows two-way reservation-based control to aggregate bursts destined for other clusters in a lossless way with tolerable delay. The densely packed bursts can then be sent over static or switched light paths and be received in the destination cluster ring without the delay of end-to-...

Due to resource restricted sensor nodes, it is important to minimize the amount of data transmission among sensor networks so that the average network lifetime and the overall bandwidth utilization are improved. To reduce the amount of sending data, an aggregation approach can be applied along the path from sensors to the sink. It means computing and transmitting partially aggregated data to th...