As a new technique,cloud computing has a rapid development in recent ***,the security problems have caused great influences to the development and popularization of cloud computing,the importance and urgency has not t...
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ISBN:
(纸本)9783642255403
As a new technique,cloud computing has a rapid development in recent ***,the security problems have caused great influences to the development and popularization of cloud computing,the importance and urgency has not to be *** paper introduces cloud computing and security situation,studies the main security problems of cloud computing,and comes up with a cloud computing security framework which can effectively solve these security problems,and points out that only to solve the security problems,cloud computing can unceasingly expanded,and the application will be more and more widely.
This paper presents content-based image retrieval frameworks with relevance feedback based on AdaBoost learning method. As we know relevance feedback (RF) is online process, so we have optimized the learning process b...
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In this paper,we propose a non-data-aided （NDA） signal-noise ratio （SNR） estimation algorithm for quadrature amplitude modulation （QAM） signals in additive white Gauss noise （AWGN） channel using Fuzzy logic **...
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In this paper,we propose a non-data-aided （NDA） signal-noise ratio （SNR） estimation algorithm for quadrature amplitude modulation （QAM） signals in additive white Gauss noise （AWGN） channel using Fuzzy logic *** NDA SNR estimation algorithm for QAM signals is derived based on a statistical ratio of observables over a block of *** was shown that SNR can be effectively calculated by implementing proposed estimation algorithm using Fuzzy logic.
According to the problem of attribute subset selection,the paper put forward a method based on evaluation of attribute *** on the rough set theories the method first defined the calculation formula of attribute signif...
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In this paper, the concept of non-symmetric similarity relation had been used to formulate a new definition of approximation to an incomplete information management system. By means of the new definition of approximat...
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This paper presents a novel neural network based scheme for intelligent analysis of learners' response for an e-Learning environment. The scheme applies to typed-in single-word textual response from the learners&#...
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This paper presents a novel neural network based scheme for intelligent analysis of learners' response for an e-Learning environment. The scheme applies to typed-in single-word textual response from the learners' end. The proposed system is intelligently adaptive to inadvertent mistakes committed by the learner while responding to the system's queries. Two-layered feed-forward neural net is employed to build the analyzer. Experimental results, carried out on a wide variety of sample responses show that the proposed scheme successfully simulates a human instructor communicating with the learner through single-word typed-in text.
As the number of Internet users and the number of accessible Web pages grows, it is becoming increasingly difficult for users to find documents that are relevant to their particular needs. Users must either browse thr...
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ISBN:
(纸本)9781605588124
As the number of Internet users and the number of accessible Web pages grows, it is becoming increasingly difficult for users to find documents that are relevant to their particular needs. Users must either browse through a large hierarchy of concepts to find the information for which they are looking or submit a query to a publicly available search engine and wade through hundreds of results, most of them irrelevant. Web crawlers are one of the most crucial components in search engines and their optimization would have a great effect on improving the searching efficiency. This paper, introduces an intelligent web crawler that uses an ontological engineering concepts for improving its crawling performance. Intelligent crawler estimates the best path for crawling. This is the first crawler that acts intelligently without any relevance feedback or training. Copyright 2010 ACM.
This paper proposes an s-box optimization method based on tabu-genetic *** the algorithm niche technique is introduced to maintain population diversity and can avoid premature *** performances such as s-box avalanche ...
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ISBN:
(纸本)9781424463671
This paper proposes an s-box optimization method based on tabu-genetic *** the algorithm niche technique is introduced to maintain population diversity and can avoid premature *** performances such as s-box avalanche criteria and diffusion properties are treated as evolution targets and s-box optimization is studied in more *** experimental result shows that the improved tabugenetic algorithm based on this paper is feasible and efficient to construct *** the improved algorithm can not only acquire a series of s-boxes of high degree of nonlinearity and low differential evenness degree,but also effectively reduce redundant computations and fasten convergence speed.
The paper proposes novel dynamic distribution-aware data dissemination (DDA) based Publish/Subscribe system for Vehicular Ad Hoc Networks(VANETs). Based on the characteristics of vehicles' moving in VANET, a notif...
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ISBN:
(纸本)9781424458219;9781424458240
The paper proposes novel dynamic distribution-aware data dissemination (DDA) based Publish/Subscribe system for Vehicular Ad Hoc Networks(VANETs). Based on the characteristics of vehicles' moving in VANET, a notification-token mechanism is proposed: only the notification-tokens' holder (notification-brokers) can broadcast information to subscribers nearby-based on the calculated delivery probability with interested subscribers and predicted dynamic distribution of those subscribers in this area, it can dynamically adjust notification-tokens in the VANET. Then the notification-brokers can broadcast the received notification to other subscribers accordingly. By dynamically adjusting notificationtokens, this solution can efficiently control notification-broker's distribution and guarantee data dissemination. Simulation results based on a real city map and realistic traffic situations show that the DDA based Publish/Subscribe system performs much better in terms of delivery efficiency and delivery delay over other solutions.
P-CSCF discovery is made prior to communication to the IMS core network and only performed before an initial registration. The approach introduced in this paper is to provide an efficiency mechanism to retrieve the pr...
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P-CSCF discovery is made prior to communication to the IMS core network and only performed before an initial registration. The approach introduced in this paper is to provide an efficiency mechanism to retrieve the proper P-CSCF for the SIP terminal through Network Attachment Subsystem of *** proposed discovery procedure advanced a 'nearest contact retrieval' method based on improved quad-tree to obtain the P-CSCF in Connectivity Session Location and Repository Function of IMS and transmit the selected P-CSCF to SIP terminal by enhancing the communication interface in Network Attachment Subsystem of IMS and DHCP message. The presented discovery mechanism focused primarily on terminal moves between visited networks in IMS architecture, since it needs to communicate via its first outbound SIP proxy, fast proxy query processing is necessary. The method requires limited changes in function and almost no changes in interfaces. With this method, PCSCF could be provided to terminal more intelligent, also the registration could be smoother.
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