systems and general systems
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 ... bit
2
/dB and 0.125 bit
2
/dB, when
L
= 2 and
SNR ranges from 0 dB to 15 dB. The variance is reduced from 1.75 bit
2
to 1.30 bit
2
and
from 1.48 bit
2
to 1.26 bit
2
, when SNR = 10 dB and
L
...
- 205
- 638
- 2
Children’s Health Deficits due to Diarrhoea: Effects of Water Supply and Sanitation Systems in Slums with Different Water Logging Conditions
Ngày tải lên :
05/09/2013, 10:15
... SHU: Short-term and Heavy rainy,
SDG: S
hort-term and Drainage, LSD: Long-term and Stagnant, LHT: Long-term and Heavy rainy,
LMK: L
ong-term and Monsoon flood, PDL: Persistent and Drainage, PHS: ... supply
and (c) sanitation systems and attitudes for (d) water treatment at home, (e)
children’s defecation habits and (f) hygiene practices
Note: Communities code name, SRM: Short-term and Rainy, ... no latrine at all
Hand washing with soap before eating
Hand washi ng without s oap before eating
No hand washing before eating
Hand washing after defecation with soap
Hand washing after defecation...
- 15
- 702
- 0
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 ... 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. ... vision of 4G and future mobile and wireless systems. Such systems
target the market of 2010 and beyond, aiming to offer support to mobile applications demand-
ing data rates of 50 Mbps and beyond....
- 14
- 423
- 1
Nano and Microelectromechanical Systems P4
Ngày tải lên :
17/10/2013, 11:15
... rotational, and hybrid actuators and
sensors can be synthesized, and a motion classifier is
{ }
ℵ∈=ℵ nn:
.
Therefore, we have
( ){ }
ℵ∈∈∈∈=ℵ××× nTtGgMmntgmTGM and, ,:,,,
.
Winding and cooling, power and ... or characteristic. Let A stands for actuators, B stands for
sensors, and C stands for translational motion microstructure. Then, the
region ABC represents actuators and sensors which are synthesized ... are
straightforwardly derived, and analysis and simulations can be performed.
The actuators/sensors geometry and electromagnetic systems, as
documented in Table 3.2.1, are partitioned into 3 horizontal and 6 vertical
©...
- 20
- 454
- 1
Nano and Microelectromechanical Systems P6
Ngày tải lên :
19/10/2013, 18:15
... NANO- AND MICROELECTROMECHANICAL
SYSTEMS
4.1. FUNDAMENTALS OF ELECTROMAGNETIC RADIATION AND
ANTENNAS IN NANO- AND MICROSCALE
ELECTROMECHANICAL SYSTEMS
The electromagnetic power is generated and ... fields,
electric and magnetic field vectors form separate and independent pairs. That
is, E and D are not related to H and B, and vice versa. However, for time-
varying electric and magnetic fields, ... closed-loop systems use the data from different
sensors, feedback commands (controls) are generated and executed, and
intelligent updates and evolution are performed. The feedback for sensor and
control...
- 36
- 515
- 0
Nano and Microelectromechanical Systems P5
Ngày tải lên :
19/10/2013, 18:15
... the stator and rotor circuitry dynamics. As the control and state
variables we use the voltages applied to the stator (as and bs) and rotor (ar
and br) windings, as well as the stator and rotor ... bs
,
and
i
cs
are the phase currents in the stator windings as, bs and cs;
i i
qs ds
,
and
i
os
are the quadrature-, direct-, and zero-axis components of
stator currents;
ψ ψ
as bs
,
and ... ds
,
and
ψ
os
are the quadrature-, direct-, and zero-axis components of
stator flux linkages;
u u
ar br
,
and
u
cr
are the voltages in the rotor windings ar, br and cr;
u u
qr dr
,
and
u
or
...
- 103
- 310
- 0
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
The Future of Wireless Banking Implementation of Wireless Banking and Financial Systems
Ngày tải lên :
26/10/2013, 16:15
... changing standards for APIs,
gateways, security methods, screens, operating systems, and browsers.
There are also
variable computing
powers on the handheld devices and different bandwidth requirements.
Wireless ... The
WebSphere application server will handle the data dynamically and adapt it to the handheld device. Also
it can run multiple applications and requests, and can be easily integrated to the backend ... install, configure and add new services:
• The client application must be easy to install, customize, and add new handheld devices.
• Easy to Integrate with other servers and Back-End systems:
• Integration...
- 16
- 562
- 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 ... dynamical system.
In general by a system we understand a collection of elements and their effects on
each other. That seems rather abstract. But in fact we are surrounded by systems.
The weather, ... 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...
- 410
- 322
- 0
Darwinism, Design, and Complex Systems Dynamics
Ngày tải lên :
01/11/2013, 07:20
... Evolution and the Meanings of Life. New
York: Simon and Schuster.
Depew, D. J. 1998. Intelligent design and irreducible complexity. A rejoinder. Rhetoric
and Public Affairs 1: 571–8.
Depew, D. J., and ... Evolutionary Systems: Biological and Epistemological
Perspectives on Selection and Self-Organization, ed. G. Van de Vijver, S. N. Salthe,
and M. Delpos. Dordrecht: Kluwer, pp. 59–66.
Weber, B. H., and ... Brains, Cities, and Software.
New York: Scribner.
Joyce, G. F., and L. E. Orgel 1993. Prospects for understanding the origin of the
RNA world. In The RNA World, ed. R. F. Gesteland and J. F. Atkins....
- 18
- 358
- 0
GSM, cdmaOne and 3G systems P1
Ngày tải lên :
07/11/2013, 16:15
... environment.
1.4.6.1 Forward and reverse links
In general, cellular systems employ frequency division duplex (FDD) in which signals to
and from the mobiles are sent in different frequency bands. Transmissions ... is
H
4
=
"
H
2
H
2
H
2
H
2
#
=
2
6
6
6
4
1111
1
11
1
11
1
1
1
1
11
3
7
7
7
5
(1.45)
where row 1 and column 1 are Walsh code 0, or w
0
;row3andcolumn3arew
1
;row 4and
column 4 are w
2
; and row 2 and column 2 are w
3
. The Walsh code number w
j
is ... vectors
g
1
=
101
]
and g
2
=
111
]
(1.17)
and the corresponding code word
c
2
c
1
]
,where
c
1
=
2
6
4
b
2
b
1
b
0
3
7
5
g
1
and c
2
=
2
6
4
b
2
b
1
b
0
3
7
5
g
2
(1.18)
and where b
0
, b
1
,andb
2
are...
- 64
- 355
- 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 ... declarative specification
of preconditions and effects of system’s actions and applies artificial
intelligence, automated reasoning, and planning framework and techniques
to dynamically recognize...
- 20
- 454
- 0
Tài liệu Idea Group - Information Management Support Systems And Multimedia Technology P1 doc
Ngày tải lên :
13/12/2013, 01:15
... 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 ... 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 ... 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...
- 30
- 506
- 0