In this paper, we presented a method to improve structural modeling based on conserved domain clusters and structure-anchored alignments. We first constructed a template library of structural clusters for all conserve...
详细信息
ISBN:
(纸本)1595934804;9781595934802
In this paper, we presented a method to improve structural modeling based on conserved domain clusters and structure-anchored alignments. We first constructed a template library of structural clusters for all conserved sequence domains. Then, for each cluster, we built the profile using the structure and sequence information. Finally we use the profile and structural alignments as anchors to increase the alignment accuracy between a query and its templates. Our preliminary results show that this method can be used for the partial prediction for a majority of known protein sequences with better qualities. Copyright 2007 ACM.
In this paper, we propose a scalable service scheme for secure group communication in grid. In the service scheme, a series of methods and strategies are presented, such as the initialization methods for group member,...
详细信息
The bandwidth bottleneck and the high rate of losing packets are the major obstacles when extending P2P live streaming system to WLAN. To tide over them, a new wireless multicast agent mechanism (WiMA) based on the IP...
详细信息
Compliance checker is an important component for automated trust negotiation (ATN) to examine whether the credentials match the access control policies. A good design for compliance checker helps to speed up trust est...
详细信息
It is still a challenging task to provide large scale video-on-demand (VoD) streaming services based on overlay network due to its inherent dynamicity and heterogeneity. Most of previous work has focused on how to con...
详细信息
Nowadays, Peer-to-Peer technology has been widely used in live streaming applications and many related systems are proposed. However, their single overlay design and unbalanced scheduling methods lead to some ineffici...
详细信息
ISBN:
(纸本)9781595937575
Nowadays, Peer-to-Peer technology has been widely used in live streaming applications and many related systems are proposed. However, their single overlay design and unbalanced scheduling methods lead to some inefficiency including high control overhead and bad playback experience. This paper mainly discusses how to address these certain problems. We introduce a hybrid architecture to solve the locality problem and reduce the control overhead. We also propose a scheduling method to achieve load balance. All solutions are implemented in Anysee2.
Scan design is a widely used design-for-testability technique to improve test quality and efficiency. For the scan-designed circuit, test and diagnosis of the scan chain and the circuit is an important process for sil...
详细信息
Scan design is a widely used design-for-testability technique to improve test quality and efficiency. For the scan-designed circuit, test and diagnosis of the scan chain and the circuit is an important process for silicon debug and yield learning. However, conventional scan designs and diagnosis methods abort the subsequent diagnosis process after diagnosing the scan chain if the scan chain is faulty. In this work, we propose a design-for-diagnosis scan strategy called helix scan and a diagnosis algorithm to address this issue. Unlike previous proposed methods, helix scan has the capability to carry on the diagnosis process without losing information when the scan chain is faulty. What is more, it simplifies scan chain diagnosis and achieves high diagnostic resolution as well as accuracy. Experimental results demonstrate the effectiveness of our design.
Targeted immunization has been studied as an applicable measure for network epidemics. Unless global information is collected, existing targeted strategies are short of strength in organizing a potent structure to spr...
详细信息
Targeted immunization has been studied as an applicable measure for network epidemics. Unless global information is collected, existing targeted strategies are short of strength in organizing a potent structure to spread the vaccines fleetly. We propose a novel dynamic immunization mechanism, called OnRipple, to propagate vaccines in susceptible-infected-removed (SIR) epidemiological model. With a light-weighted, scalable and distributed framework and an "axis" structure, OnRipple builds-up an effective overlay network. Thus, nodes have essential sampling information of the whole network and targeted immunization can be easily implemented. Nodes are also able to radiate vaccines to both nearby and distant participants almost at the same time. We analyze the performance of this strategy by simulations on small-world networks. On average, OnRipple is 34 % faster than traditional targeted immunization. It is proven to be flexible and effective in large-scale peer-to-peer (P2P) networks and scale-free networks.
Today,the data storage industry faces a rapidly growing volume of *** more primary disk capacity to manage data growth is a costly and non-sustainable *** investing in new capacity,data managers should rationalize the...
详细信息
Today,the data storage industry faces a rapidly growing volume of *** more primary disk capacity to manage data growth is a costly and non-sustainable *** investing in new capacity,data managers should rationalize their existing storage infrastructure to maximize the use of existing *** is a growing need for achieving a high ratio of Total Performance of Ownership (TPO) to Total Cost of Ownership (TCO),or TPO/*** storage infrastructure can be made more efficient by assessing data usages,eliminating unnecessary data copies,moving less critical data to less expensive disk devices and repurposing allocated but unused *** existing storage assets can reduce storage costs by delaying or eliminating the need for new primary capacity to manage information *** this paper,we apply the notion of information lifecycle management (ILM) to achieve the above improved efficiencies and *** balancing data value and storage requirements,we aim to reduce the storage system's dependence on expensive high-performance disk devices and lower its cost per online gigabyte,thus resulting in a higher TPO/TCO.
Prefetching is one of the most important method to improve storage system performance. Without knowing any I/O semantics in device layer, it is not easy now for storage system to exploit semantic information and then ...
详细信息
暂无评论