cognitive systems and intelligent technologies
Principles of Digital Communication Systems and Computer Networks
... MSSV:08520470Sau đây là bài dịch chương II trong sách “Principles of Digital Communication Systems and Computer Networks” của nhóm em.Phần I – Các hệ thống truyền thông số(Digital Communation ... entropy là H = 4.07 bit/ký hiệuLưu ý: Hãy xem xét câu sau: "I do not knw wheter this is undrstandble." Mặc dù thực tế là một số chữ cái là mất tích trong câu này nhưng bạn vẫn có thể làm...
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A Study of Channel Estimation for OFDM Systems and System Capacity for MIMO-OFDM Systems
... OFDM systems over time varying and frequency dispersive fading channels. With the increasing number of mobile phone users and higher demands for wireless services, future communication systems ... estimation for OFDM systems For wide-band wireless communication systems, the channel is time varying and dispersive fading, which will distort the transmitted signal. Thus, the accurate and real-time ... locating, and tracking applications. The concept of cognitive radio was first proposed by Dr. J. Mitola and Prof. G. Q. Maguire [4] in 1999 and was an extension to the concept of software radio. Cognitive...
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Future Trends- Fourth Generation (4G) Systems and Beyond
... wireless systems, the telecommunications scene and the services offered by 4G and future systems are notknown yet and as a result aims for these systems may change over time. However, as 3G systems ... communication and intelligent shopping will be enabled by 4G and future systems. †The challenge of predicting the future of wireless systems. The exact state of 4G and future systems cannot ... 2010 and beyond, there is time for 4G research and standards development. So far, no 4G standard has been defined and only speculations havebeen made regarding the structure and operation of 4G systems. ...
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Chapter-10-File systems and devices
... file systems across a network.We’lllook at it in Chapter 25.• FreeBSD supports a number of file systems from other popular operating systems. Youmount the file systems with the mount command and ... groups of rwx: r stands for readpermission, w stands for write permission, and x stands for execute permission. The threegroups represent the permissions for the owner,the group and others respectively.Ifthepermission ... of file system. Local file systems on hard disk arealways ufs ,and file systems on CD-ROM are cd9660.Remote file systems arealways nfs.Specify swap partitions with swap ,and the proc file system with...
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Dynamical systems and fractals Computer graphics experiments in ascal
... ChaosFigure 1.2-7 Julia Propeller.Dynamical Systems and 2.1-2Development of the disease for 0.3 and k = 0.5.Figure 2.1-3Development of the disease for = 0.3 and k = 1 .O.In order to get a feeling ... appropriate graphics commands included. and Button are machine-specific procedures. In and are system procedures. This is thecase for Turbo Pascal on MS-DOS machines and for UCSD Pascal (see ... rapidly, the larger is.10Dynamical Systems and Figure 1.2-4 Tornado Convention.2 picture was christened by Prof. K. Kenkel of Dartmouth College.18Dynamical Systems and Fractals2.1 First ExperimentsOne...
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Tài liệu Matlab tutorial for systems and control theory pdf
... Specify orientation of a figure8 Signals and Systems CommandsThe following commands are organized by topics in signals and systems. Each of thesecommands has a number of options that extend ... commands 117.2 Customization of plots . 118 Signals and Systems Commands 118.1 Polynomials . . . 118.2 Laplace and Z Transforms 128.3Frequency responses . . 138.4 Fourier transforms and ... command 1;MATLAB command 2;MATLAB command 3;The name of the m-file for this function is functionname.m and it is called from the MATLABcommand line or from another m-file by the following command>>...
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Tài liệu Idea Group - Information Management Support Systems And Multimedia Technology P2 docx
... this view have already been built and aredescribed in Rich Sidner and Lesh (2001), Babaian, Grosz and Shieber (2002),Ryall, Marks and Shieber (1997), and Ortiz and Grosz (2002).Theories of collaboration ... analysis and design oforganizations in multi-agent systems. ICMAS-98, Paris, France, 128-135.Fox, M. S. (1981). An organizational view of distributed systems. IEEE Transac-tion on Systems, Man and ... modeling. Sen,Dutta, and Mukherjee (2000) proposed an intelligent buyer agent which aims toeducate the user to be a more informed customer by understanding the user query and providing alternatives...
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Tài liệu Idea Group - Information Management Support Systems And Multimedia Technology P1 doc
... FrameworkUsing CORBA, Mobile Agents and Web-Based Technologies 298Dongming Cui, The University of Auckland, New ZealandJairo A. Gutiérrez, The University of Auckland, New ZealandAbout the Authors 310Index ... relationship between organizationtheory and distributed systems, and argued that by viewing distributed systems asanalogues to human organizations, concepts and theories germane to the manage-ment ... large and complex information system rapidly and effectively. And the key issue inresearch is how to organize the local agents and problem solving within the network,so that in the fixed period and...
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Tài liệu Database and XML Technologies- P3 docx
... databases, source code or docu-ment repositories, file systems etc. Its methods for content and structuremanagement and, also, for security and locking are wrapped with MECASPRM functionality.Fig. ... algorithm for the semantic interpretation of the change (standard and non-standard) actions. Also, a MECASP specific delta representation and proc-essing have been implemented in order to maintain ... applications and resources, subject to maintenance and adaptation(i.e creation and management of their versions).The implementation of the MECASP repository manager raises many problems and requires...
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Tài liệu Database and XML Technologies- P4 pptx
... a set of candidate ID mappings C = {m1, ,mn} and a weightfunction w :2I×I→ Q+. Goal: find I ⊆ C such that I is an ID set and thereis no I⊆ C such that Iis an ID set and mi∈Iw(mi) ... Querying and Navigation 153strings x = x1, ,xn and y = y1, ,ymwith n ≤ m. The string x is sequence-included in the string y if the l.c.s. of x and y is x. Note that sequence-inclusion and ... using thecontainment join (ContainingP arent and ContainedChild).For queries with n = 1, step 4, for the signature based query plan, and steps6 and 7, for the containment join based query plan,...
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Tài liệu Database and XML Technologies- P5 pptx
... First Course in Database Systems with the titlePrinciples of Database and Knowledge − Base Systems, – replace the string Principles of Database and Knowledge − Base Systems with the title A ... Gergatsoulis and Y. Stavrakas7. M. Gergatsoulis, Y. Stavrakas, and D. Karteris. Incorporating Dimensions toXML and DTD. In H. C. Mayr, J. Lanzanski, G. Quirchmayr, and P. Vogel,editors, Database and ... and retrieving MXML doc-uments and the incorporation of contexts in XPath and XQuery is in our imme-diate plans for future work.References1. S. Abiteboul, D. Quass, J. McHugh, J. Widom, and...
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Tài liệu Database and XML Technologies- P6 pdf
... root and b is nota key and c is a key and b ∩ c ∩ p = root and there exists b →→ d|e such that dis a key and e is a key and d ≥ q ∩ r and e ≥ q ∩ r;(G) q is not a key and r is not a key and ... k>p∩ q ∩ r and k ∩ q ∩ r = p ∩ q ∩ r;(I) p is a key, q is not a key and r is a key and q ∩ r = p and q ∩ r is nota strict prefix of p and ∃x →→ k|r such that x<pand k>p∩ q ∩ r and k ∩ q ... q|k and thereexists p →→ k|r such that k ≥ q ∩ r;(H) p is a key, q is a key and r is not a key and q ∩ r = p and q ∩ r is nota strict prefix of p and there exists x →→ q|k such that x<pand...
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