cognitive systems and intelligent technologies
Principles of Digital Communication Systems and Computer Networks
Ngày tải lên :
18/09/2012, 10:13
... MSSV:08520470
Sau 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 hiệu
Lưu 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...
- 15
- 948
- 1
A Study of Channel Estimation for OFDM Systems and System Capacity for MIMO-OFDM Systems
Ngày tải lên :
20/11/2012, 11:28
... 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...
- 205
- 638
- 2
Future Trends- Fourth Generation (4G) Systems and Beyond
Ngày tải lên :
29/09/2013, 21:20
... wireless systems,
the telecommunications scene and the services offered by 4G and future systems are not
known 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 have
been made regarding the structure and operation of 4G systems. ...
- 14
- 423
- 1
Chapter-10-File systems and devices
Ngày tải lên :
22/10/2013, 19:15
... 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 read
permission, w stands for write permission, and x stands for execute permission. The three
groups represent the permissions for the owner,the group and others respectively.Ifthe
permission ... of file system. Local file systems on hard disk are
always ufs ,and file systems on CD-ROM are cd9660.Remote file systems are
always nfs.Specify swap partitions with swap ,and the proc file system with...
- 17
- 461
- 0
Dynamical systems and fractals Computer graphics experiments in ascal
Ngày tải lên :
26/10/2013, 17:15
... Chaos
Figure 1.2-7 Julia Propeller.
Dynamical Systems and
2.1-2
Development of the disease for 0.3 and k = 0.5.
Figure 2.1-3
Development 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 the
case for Turbo Pascal on MS-DOS machines and for UCSD Pascal (see ... rapidly, the larger is.
10
Dynamical Systems and
Figure 1.2-4 Tornado Convention.2
picture was christened by Prof. K. Kenkel of Dartmouth College.
18
Dynamical Systems and Fractals
2.1 First Experiments
One...
- 410
- 322
- 0
Tài liệu Matlab tutorial for systems and control theory pdf
Ngày tải lên :
12/12/2013, 07:15
... Specify orientation of a figure
8 Signals and Systems Commands
The following commands are organized by topics in signals and systems. Each of these
commands has a number of options that extend ... commands 11
7.2 Customization of plots . 11
8 Signals and Systems Commands 11
8.1 Polynomials . . . 11
8.2 Laplace and Z Transforms 12
8.3Frequency responses . . 13
8.4 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 MATLAB
command line or from another m-file by the following command
>>...
- 18
- 715
- 0
Tài liệu Idea Group - Information Management Support Systems And Multimedia Technology P2 docx
Ngày tải lên :
13/12/2013, 01:15
... this view have already been built and are
described 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 of
organizations 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 to
educate the user to be a more informed customer by understanding the user query
and providing alternatives...
- 20
- 454
- 0
Tài liệu Idea Group - Information Management Support Systems And Multimedia Technology P1 doc
Ngày tải lên :
13/12/2013, 01:15
... Framework
Using CORBA, Mobile Agents and Web-Based Technologies 298
Dongming Cui, The University of Auckland, New Zealand
Jairo A. Gutiérrez, The University of Auckland, New Zealand
About the Authors 310
Index ... relationship between organization
theory and distributed systems, and argued that by viewing distributed systems as
analogues to human organizations, concepts and theories germane to the manage-
ment ... large
and complex information system rapidly and effectively. And the key issue in
research is how to organize the local agents and problem solving within the network,
so that in the fixed period and...
- 30
- 506
- 0
Tài liệu Database and XML Technologies- P3 docx
Ngày tải lên :
14/12/2013, 15:16
... databases, source code or docu-
ment repositories, file systems etc. Its methods for content and structure
management and, also, for security and locking are wrapped with MECASP
RM 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...
- 50
- 457
- 0
Tài liệu Database and XML Technologies- P4 pptx
Ngày tải lên :
14/12/2013, 15:16
... a set of candidate ID mappings C = {m
1
, ,m
n
} and a weight
function w :2
I×I
→ Q
+
. Goal: find I ⊆ C such that I is an ID set and there
is no I
⊆ C such that I
is an ID set and
m
i
∈I
w(m
i
) ... Querying and Navigation 153
strings x = x
1
, ,x
n
and y = y
1
, ,y
m
with 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 the
containment join (ContainingP arent and ContainedChild).
For queries with n = 1, step 4, for the signature based query plan, and steps
6 and 7, for the containment join based query plan,...
- 50
- 389
- 0
Tài liệu Database and XML Technologies- P5 pptx
Ngày tải lên :
14/12/2013, 15:16
... First Course in Database Systems with the title
Principles of Database and Knowledge − Base Systems,
– replace the string Principles of Database and Knowledge − Base Systems
with the title A ... Gergatsoulis and Y. Stavrakas
7. M. Gergatsoulis, Y. Stavrakas, and D. Karteris. Incorporating Dimensions to
XML 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.
References
1. S. Abiteboul, D. Quass, J. McHugh, J. Widom, and...
- 50
- 399
- 0