c programming guide for beginners
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drupal 7 primer [electronic resource] creating cms-based websites a guide for beginners
Ngày tải lên :
29/05/2014, 15:45
... to CMS concepts.
The second part is focused on starting an account, installing Drupal with a
timesaving “one-click” installation tool, and covering important basics such as
security and basic configuration. ... Google
Account, go to Google.com, click the “Sign-in” link, and click the “Create an
Account now” link.)
Then, on the next page, click the Create site button (see Figure 2.6).
The Site creation ... introduced to adding content
to the site, which includes learning about various modules that can add additional
features and functions.
The third part introduces some techniques and concepts for...
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making sense of online learning a guide for beginners and the truly skeptical
Ngày tải lên :
03/06/2014, 02:04
... the University of Colorado
Health Sciences Center in Denver, called me a while back for some
advice. She was working on an online course to educate patients
about pancreatic cancer and was frustrated ... one
speci c time)
Potential Cons: Online Learning
Lack of visual cues
Technological and access hurdles
Favors those who communicate
well in writing
Immediate feedback
Visual cues
Ease of social ... exact script when they phone the call
center to complain about defective merchandise, for example, why
should we train call-center reps to memorize one rigid script? An
analysis of how the content...
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Bash Guide for Beginners
Ngày tải lên :
13/07/2014, 08:11
... statements: constructs used in Bash to test conditions.ã
Chapter 8: Interactive scripts: making scripts user-friendly, catching user input.ã
Chapter 9: Executing commands repetitively: constructs used ... its configuration files and decides which services to start or
Bash Guide for Beginners
Chapter 1. Bash and Bash scripts 18
Chapter 1. Bash and Bash scripts
In this introduction module we
Describe ... $-
himBH
In non-interactive shells, the prompt, PS1, is unset.
Bash Guide for Beginners
Chapter 1. Bash and Bash scripts 9
franky ~> printenv
CC=gcc
CDPATH=.:~:/usr/local:/usr:/
CFLAGS=-O2 -fomit-frame-pointer
COLORTERM=gnome-terminal
CXXFLAGS=-O2...
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Control Engineering - A guide for beginners - Chapter 1 ppt
Ngày tải lên :
07/08/2014, 15:20
... electronic control-
lers, and excludes mechanical and pneumatic control systems. The user, who is faced with choos-
ing a controller for his particular application, will be shown initially which ... of ways to carry out this task: me-
chanical, pneumatic, electrical, mathematical. The mechanical controller, for example, alters a sig-
nal through a lever system, the electronic controller ... be comprehensive.
Mechanical variations:
- Compact controllers (process controllers) contain all the necessary components (e.g. display,
keypad, input for setpoint etc.) and are mounted in a case...
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Control Engineering - A guide for beginners - Chapter 2 ppsx
Ngày tải lên :
07/08/2014, 15:20
... and non-linear characteristics
Dynamic characteristic
The dynamic response of the process is decisive for characterizing the control loop. The dynamic
characteristic describes the variation in the ... process
2.1 Dynamic action of technical systems
The process is the element of a system which has to be controlled in accordance with the applica-
tion duty. In practice, the process represents ... be
corrected by applying an opposing MV. An excessive change in MV could cause the process value
to swing back below the desired setpoint, which is why control of such a process is more difficult.
...
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Control Engineering - A guide for beginners - Chapter 3 pptx
Ngày tải lên :
07/08/2014, 15:20
... working point correction
y / %
Controller characteristic
Permanent control deviation
Setpoint w
X = 100 C
T / C
T / C
100
50
40
100
150
200 300
400
Static process characteristic
400
200
25 ... addition,
controllers with a rising characteristic (direct operating sense) are used for certain processes. For
instance, the manipulating variable in a cooling process must decrease as the process ... the static characteristic of the process is known, the resulting control deviation can be found di-
rectly. Fig. 33 shows the characteristic of a P controller with an X
P
band of 100 C. A setpoint...
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Control Engineering - A guide for beginners - Chapter 4 pps
Ngày tải lên :
07/08/2014, 15:20
... increased tendency to overshoot, because of this I component, and
the control becomes a little more sluggish. Accurate stable control of processes affected by delays
can be achieved by a P controller, ... accepted as given, good control
quality can only be achieved by a suitable choice of controller type and an appropriate optimiza-
tion.
The disturbances can act at different points in the process. ... However, it could happen that the control loop
becomes unstable, and that the manipulating variable and process variable perform periodic oscil-
lations. Under certain circumstances, this could result...
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Control Engineering - A guide for beginners - Chapter 5 pptx
Ngày tải lên :
07/08/2014, 15:20
... set con-
tact spacing, because the final pulse runs the actuator into the contact spacing and thereby redu-
ces the control deviation.
As the actuator drive has the same characteristic for clockwise ... the contact spacing. If a process
enters the contact spacing, the P component is not effective. In the contact spacing, only the I and
D components are effective, and in principle the process ... resistance
thermometer together with the necessary electronic circuitry takes the place of the bimetallic
switch.
Fig. 52: Characteristic of a discontinuous controller
The discontinuous controller...
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Control Engineering - A guide for beginners - Chapter 6 doc
Ngày tải lên :
07/08/2014, 15:20
... Additive switched disturbance correction
Controller
Process
Auxiliary
controller
y
w
x
z
Controller
Process
y
w
x
z
z
y
y
z
c) Multiplicative switched disturbance correction
Controller
Process
w
x
z
z
0—100%
K
P
... switched distur-
bance correction takes into account any offset shifts in the process. Controllers that allow such a
switched disturbance correction to be implemented (compact controllers), normally ... actuating controllers, with PI or PID action. With microprocessor controllers, func-
tions such as ratio control can usually be configured directly.
6.8 Multi-component control
In a multi-component control...
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TCP/IP Sockets in C# Practical Guide for Programmers phần 1 pot
Ngày tải lên :
13/08/2014, 08:21
... Almeroth
TCP/IP Sockets in Java: Practical Guide for Programmers
Kenneth L. Calvert and Michael J. Donahoo
TCP/IP Sockets in C: Practical Guide for Programmers
Michael J. Donahoo and Kenneth L. Calvert
JDBC: ... experience with C# and Microsoft Windows.
You are expected to be conversant with C# concepts such as classes, methods, interfaces,
and basic inheritance. We assume that you have access to a Microsoft ... Spielman
Java: Practical Guide for Programmers
Zbigniew M. Sikora
The Struts Framework: Practical Guide for Java Programmers
Sue Spielman
Multicast Sockets: Practical Guide for Programmers
David...
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TCP/IP Sockets in C# Practical Guide for Programmers phần 2 pptx
Ngày tải lên :
13/08/2014, 08:21
... instance of TcpListener listens for TCP connection requests
and creates a new socket (in the form of a TcpClient or Socket instance) to handle each
incoming connection.
2.3.1 TCP Client
A TCP client ... incoming connections: lines 29–53
■
Accept an incoming connection: line 35
The sole purpose of a TcpListener instance is to supply a new, connected
TcpClient instance for each new TCP connection. ... the TCP echo client with a graphical interface.
TcpClient Summary
Description
TcpClient provides simple methods for connecting to, sending, and receiving data
over a TCP connection. The TcpClient...
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