gear for high performance
Infrastructure Solutions for High-Performance Data Networks
Ngày tải lên :
27/10/2013, 17:15
... questions.
In general, how satisfied are users with the performance of your data
center?
g
Very satisfied; we receive almost no complaints about performance.
g
Somewhat satisfied; while our users occasionally ... l o re strategies for improving reliability and cost effectiveness in terms of
layout, cable management, cooling and power utilization
g
Pursue forward-thinking strategies for the 21st century ...
Section A
4
Worksheet: Analyzing Your Data Center
Design and Layout
The key to maintaining a high- performance data network is the design and
layout of your data center.
In Section A, we’ll examine...
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Tài liệu Infrastructure Solutions for High-Performance Data Networks A Planning Guide for Network Managers docx
Ngày tải lên :
21/12/2013, 07:17
...
Interconnect
Section B
Infrastructure Solutions
for High- Performance
Data Networks
A Planning Guide for Network Managers
PLANNING GUIDE
A Planning Guide for Network Managers
Page 6
Spatial Layout
How ... while keeping costs down?
Infrastructure Solutions for
A Planning Guide for Network Managers
High- Performance Data Networks
A Planning Guide for Network Managers
Page 13
How well do you feel you ... capacity. The formula for category 6 UTP is shown below. The last calculation
(multiplying by 1.30) is done to ensure that the cable management system is no more than 70
percent full.
Formula for Cable...
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Artech.House.Publishers.Successful.Marketing.Strategy.for.High.Tech.Firms.3rd.edition.eBook-LiB.pdf
Ngày tải lên :
21/09/2012, 17:27
... improve the performance of established
1.2 What is a high- tech product? 13
Introduction Growth Maturity Decline
Time/
inv
estment
Performance
Figure 1.6 The concept of a life cycle for products ... Meaning of Marketing for High- Tech Firms
The Meaning of Marketing for
High- Tech Firms
It is clear that successful marketing strategies have been funda
-
mental for all the high- technology firms ... which are now almost forgotten.
For industrial products, the case of electronics is characteristic: In the
1950s the input medium for information processing was first performed by
vacuum tubes....
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HIGH PERFORMANCE DRIVES_Chapter5_2
Ngày tải lên :
17/10/2013, 02:15
... current command for the rated d-
axis current and open speed loop.
HIGH PERFORMANCE DRIVES
E Levi, 2001
59
-8
-6
-4
-2
0
2
4
6
8
Current (A)
0 0.005 0.01 0.015
Time (s)
a. current waveform
0.001
0.01
0.1
1
10
Current ... so that machine
operates with 70 % of the rated flux (the reason for operation with reduced flux is beyond the scope of
HIGH PERFORMANCE DRIVES
E Levi, 2001
57
applied through a rate-of-change ... rotor flux is established in the machine, speed command equal to −40 % of the rated speed is
HIGH PERFORMANCE DRIVES
E Levi, 2001
62
curve expressed as a function of the stator q-axis current...
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HIGH PERFORMANCE DRIVES_Chapter6_1
Ngày tải lên :
19/10/2013, 08:15
... frequency is high enough, one carrier wave
may be utilised for all the three phases as is done here.
HIGH PERFORMANCE DRIVES
E Levi, 2001
92
5. CURRENT CONTROL TECHNIQUES IN HIGH PERFORMANCE
AC ... magnet synchronous machine (SPMSM) with surface mounted magnets is to
be used in a high performance machine tool drive, for operation in the base speed region only. It is fed
from a PWM inverter, whose ... by means of ramp
comparison method. In the latter case, the need for decoupling circuit application is addressed as well.
HIGH PERFORMANCE DRIVES
E Levi, 2001
99
in the complex plane and explain...
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HIGH PERFORMANCE DRIVES_Chapter7
Ngày tải lên :
23/10/2013, 06:15
... Matlab for speed
estimator evaluation
Data cable
DC generator
Fig. 6.5 - The experimental rig.
HIGH PERFORMANCE DRIVES
E Levi, 2001
100
6. SPEED ESTIMATION FOR SENSORLESS HIGH PERFORMANCE
VECTOR ... requiring high dynamic
performance. Different, more sophisticated techniques are required for high performance applications in
vector controlled drives. In a sensorless drive, speed information ... flux:
()
()
i
L
Li
i
L
Li
r
m
sss
r
m
sss
ααα
βββ
ψ
ψ
=−
=−
1
1
(6.18)
HIGH PERFORMANCE DRIVES
E Levi, 2001
109
6.5. PERFORMANCE OF THE ROTOR FLUX BASED MRAC SPEED ESTIMATOR
Performance of the MRAC based speed estimator,...
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Communication Strategy for High-Tech Products
Ngày tải lên :
24/10/2013, 07:20
... physically showing the audience. Therefore, radio
is more useful for increasing awareness and especially for stressing specific
228 Communication Strategy for High- Tech Products
... Strategy for High- Tech Products
the company and are therefore more readily accepted. Credibility and over
-
coming resistance to change are two key elements of success in marketing a
high- tech ... ad campaign in 2002 with $70
million for the North American market.
However, the sheer volume of money is not the ultimate
indicator of performance; some highly successful companies
have managed...
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The Meaning of Marketing for High-Tech Firms
Ngày tải lên :
24/10/2013, 07:20
... improve the performance of established
1.2 What is a high- tech product? 13
Introduction Growth Maturity Decline
Time/
inv
estment
Performance
Figure 1.6 The concept of a life cycle for products ... Meaning of Marketing for High- Tech Firms
The Meaning of Marketing for
High- Tech Firms
It is clear that successful marketing strategies have been funda
-
mental for all the high- technology firms ... cycle), as well as a high
innovation value for the market. For these reasons, high- tech products
require large investments in research and development, and are often
intended for specific markets....
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