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content sources making this a complex task to address comprehensively in an enterprise search environment. • Text clustering, which groups the top several hundred search results into topics that are computed on the fly from the search-results descriptions, typically titles, excerpts (snippets), and meta-data. This technique lets users navigate the content by topic rather than by the meta-data that is used in faceting. Clustering compensates for the problem of incompatible meta-data across multiple enterprise repositories, which hinders the usefulness of faceting. • User interfaces, which in web search are deliberately kept simple in order not to distract the user from clicking on ads, which generates the revenue. Although the business model for enterprise search could include showing ads, in practice this is not done. To enhance end user productivity, enterprise vendors continually experiment with rich UI functionality which occupies significant screen space, which would be problematic for web search. The factors that determine the relevance of search results within the context of an enterprise overlap with but are different from those that apply to web search. In general, enterprise search engines cannot take advantage of the rich link structure as is found on the web's hypertext content, however, a new breed of Enterprise search engines based on a bottom-up Web 2.0 technology are providing both a contributory approach and hyperlinking within the enterprise. Algorithms like PageRank exploit hyperlink structure to assign authority to documents, and then use that authority as a queryindependent relevance factor. In contrast, enterprises typically have to use other query-independent factors, such as a document's recency or popularity, along with query-dependent factors traditionally associated with information retrieval algorithms. Also, the rich functionality of enterprise search UIs, such as clustering and faceting, diminish reliance on ranking as the means to direct the user's attention. V. ORACLE ULTRA SEARCH Oracle Ultra Search allows you to reduce the time spent finding relevant documents on your company’s information repositories. It crawls, indexes and makes searchable your corporate intranet through a Web-style search. It eliminates the need for coding against hard-touse low level API’s. It organizes and categorizes content from multiple repositories by extracting valuable metadata that can be used in portal applications [1]. A. Comprehensive Security Support In Ultra Search, security has been comprehensively addressed: • Searches return only documents that a particular user is allowed to see – based on group membership and user privileges. • Integrated with LDAP. All data sources in your enterprise and Ultra Search share a common user .namespace. • Query API and query samples allow for specifying a search user. Only users known to your corporate LDAP server can submit searches. • All your resources. Web pages, rows in database tables, emails in IMAP accounts. Can now be protected by Access Control Lists (ACL). • Ultra Search can obtain ACLs directly from your repositories. • Search Administrators can specify authorization roles directly in the Ultra Search administrative interface by entering a grant. List of LDAP users, and groups, which are allowed to search documents. For example, all documents retrieved during a crawl can be marked searchable by anyone belonging to groups G1, G2 and G3. Or, all users U1, U2 and U3 can be granted permission to search all documents crawled. • High performance implementation. ACLs are cached in memory and evaluated at run time during query invocation. Authorization automatically turned off if there are no secure documents in an Ultra Search instance. B. Ultra Search Applications Enterprises can benefit by using Ultra Search in many different types of applications: • Portal Search--Ultra Search offers the most powerful search for Enterprise Portals developed with the Oracle Enterprise Portal Framework. For organizations who want to build their own portal from scratch, Ultra Search provides a canned, end-useroriented, web-style search over various corporate databases, HTML pages, IMAP email servers, or filesystem documents. • Web Search for Oracle Text--Ultra Search is an application built on Oracle Text, Oracle’s industry leading text retrieval engine. • Content Management Search--Media organizations creating or publishing content in a collaborative manner need to search across content as it moves through multiple repositories in different stages of the content management life cycle: from the desktop file of the author to the staged version in a database. VI. SYBASE ENTERPRISE PORTAL Sybase Enterprise Portal provides a personalized, Web-based entry point to all your enterprise information. It delivers a continuously available, end-to-end secure environment that integrates existing business applications and databases, real-time data feeds, business events, and Web content into a coherent information interface. Sybase Enterprise Portal is a set of services that you can use to address all aspects of the design, development, deployment, and management of a corporate portal. It provides a personalized Web site and the middleware that links data, applications, events, and content between the Web site and the rest of the enterprise. A. Comprehensive Security Support User populations for portals can be very large, creating an environment in which traditional user account management and access control cannot function well. 240
Enterprise Portal security provides a graphics-based administrative interface, relies on standards-based security mechanisms, and provides interoperability with existing Internet and enterprise security infrastructures such as secure socket layers (SSLs) and public-key infrastructures (PKIs) [2]. B. Enterprise Portal security architecture Enterprise Portal security services include these elements: • A security servlet on the Web server • Enterprise Portal Application Server components • The connection manager • The object manager • The SBO • The Access Control Database (the security repository) The Portal Security Officer manages Enterprise Portal security using the Enterprise Portal Security Manager, a graphics-based administration tool. The security architecture provides a uniform structure for user authentication and authorization for the entire Enterprise Portal—including both Sybase and non-Sybase applications and components. VII. LOGCISQL-BASED ARCHIVE AND SEARCH SYSTEM LogicSQL [8] is independently developed based on the Linux high-level security database system [3]. Ministry of Science and Technology "863" Database Group of the major projects comments LogicSQL database "It is the only hope that China’s database products will be able to contend with America’s mainstream database products in the next few years." The core functions of the system as follows: Archiving that replaces the traditional backup functions is completed in the system; Information on the enterprise server and personal computers are protected and managed; The latest search technology is used to realize the rapid and accurate searching for the backup information, including keyword, semantics, the integrated use of intelligent search technology; Search results are consistent with the security level of users. Information crawl tools Automatic document Classification and Chinese Segmentation tools Index tools User Query web interface Database Access Control Interface Audit tools Arrange in inverted index order Core engine Logic SQL database The system architecture graph of the search system is shown as “Fig. 1”. In the search system, the following mandatory access control is adopted in the search process [9]. Access control label is used in specific designer, and it is divided into two parts: security classification and group sets. Security level can be expressed as: L= (C,G), and C is security grade, and G is the group of set. Two security level: L1= (C1,G1) 、L2= (C2,G2) .If and only if C1 ≥ C2 and G1 include G2, L1 ≥ L2 is correct. All operation of subject to object are abided by simplesecurity property and *_ property principle: (1) When Ls≥ Lo, subject S can read object O, and it is called down-read. (2) When Ls≤ Lo, subject S can write object O, and it is called up-write. Audit function is enhanced in the search system based on database. All operation related events are audited, and they increase the security of the search system. LogicSQL-based Enterprise search system achieves more accurate positioning information, and it realizes the value from the information across to the knowledge. ACKNOWLEDGMENT The authors wish to thank Wang Baohua. This work was supported in part by a grant from the Industrial Research Project of Guizhou Province under (Grant No. [2008]5014) and the Science and Technology Funds of Guizhou Province (Grant No.[2009]2125), the Stadholder Foundation of Guizhou Province (Grant No. 2009-111), and the Funds of Chongqing University of Arts and Sciences(Grant No. Y2009JS57, 68 and 69). REFERENCES [1] ORACLE DATA SHEET, Oracle Ultra Search, http://www.oracle.com/index.html, February 2010. [2] Enterprise Portal Overview and User Guide, Sybase Enterprise Portal, LAST REVISED: May 2000. [3] Yuan Liyan, ShiFang Enterprise Information Real-Time Archive and Search System. http://www.shifang. com.cn/p roducts, July 2009. [4] Internet Search, http://home.mcom.com/home/ internetsearch.html, February 2010. [5] Search Engines Guide, http://www.searchengineguide.com /searchengines.html, February 2010. [6] http://en.wikipedia.org/wiki/Enterprise_search, February 2010. [7] Differences Between Internet vs. Enterprise Search, Last Updated Feb 2009.http://www.ideaeng.com/tabId/98/itemI d/154/20-Differences-Between-Internet-vs-Enterprise- Se. aspx#sec, February 2010. [8] Yuan Liyan. The Documentation of Logic SQL [ M ]. Alberta University Press, Canada. 2005, pp.1-15 [9] Baohua Wang, Danning Li, Zhengyong Zhao, Xinqiang Ma,Dan Li. Research and Realization of Enterprise Security Search Application System Based on Database. Journal of Computational Information Systems. Vol.3(5).1841-1846. 2007.10. Figure 1. Web crawler architecture 241
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Proceedings The Second Internationa
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Table of Contents Message from the
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Zuming Xiao, Zhan Guo, Bin Tan, and
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Message from the Symposium Chairs T
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Second International Symposium on N
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model that can deal with time serie
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training for the Wushu competition
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information, called weak uncertain
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Student side Student side Student s
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If we define element of student as
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QoS, each frame data is divided int
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for Imaging Two and Three Phase Flo
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A. Profiling&following control algo
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Research and Realization about Conv
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PDF document structure is a tree st
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support 10 Mb / s. But ENC28J60 onl
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condition the first byte output of
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According to maximum membership deg
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ubber according to the mass ratio o
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Ⅲ. AN IMPROVED DNA ALGORITHM FOR
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Ⅴ.CONCLUSION REMARKS DNA computer
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its first child q 1 on the left, th
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chains can greatly improve efficien
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II. RELATED WORK A. Mobile Service
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special services. SOAP is used to b
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detection methods of DDoS attacks m
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Step4 calculate the new subordinate
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Figure 1. An analysis of the partit
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The preceding three formulas can be
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And the decay speed of buffer seque
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distance of view point. Given that
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Ⅳ. EVALUATION OF BLENDED LEARNING
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symmetric with respect to the origi
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each sample belongs to each categor
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A. Data Preparing To generate our t
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oth α and β . determination of Qu
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Strong earthquake 0.1< M L
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indirect causes, and the logical re
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egression. Granger causality test i
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B. Evaluation We have evaluated thi
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used as a source and neighboring ce
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Figure 3. Drainage networks generat
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Combinational logic unit failures i
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Tabal.1 Combinational fault logic t
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under the endorsement of both the m
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TABLE I. DESCRIPTION OF PROPOSITION
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Figure 2. The process of the invers
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Figure 9. (a)the original image.(b)
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that studying being going to be to
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Reference[10] analyzed the evolutio
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module, communication module, apper
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After the comprehensive performance
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system testing can be seen that the
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III. AUTONOMIC RESOURCE ALLOCATION
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nodes will be formed one cluster, t
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Keyboard event Application User mod
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SQL Azure will eventually include a
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The nodes in the suffix tree are dr
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[3] Y. Li, S. M. Chung, and J. D. H
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some drilling fluid produces hydrog
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"normalization", whose membership b
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and minimum structural elements in
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esults of the spatial transform par
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B. Research on protocol actions Com
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ACKNOWLEDGMENT This work is funded
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A. Problem Description In a small b
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[4] Huang, Hung, and J. Y. jen Hsu.
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Further by calculating, the followi
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