IIS7 là một phiên bản Web Service được Microsoft xây dựng lại hoàn toàn mới với nhiều ưu điểm vượt trội so với các thế hệ trước: nhanh hơn, bảo mật hơn và đáng tin cậy. Đặt biệt, với việc xây dựng trên kiến trúc module, IIS7 cho phép dễ dàng mở rộng và tích hợp thêm các tính năng mới. Việc lập trình có thể thông qua giao diện ASP.
In the past decades a renewed interest has been seen around optical wireless communications,
commonly known as free-space optics (FSO), because of the ever growing demand for
high-data-rate data transmission as to a large extent current applications, such as the
high-deﬁnition (HD) contents and cloud computing, require great amount of data to be
transmitted, hence, demanding more transmission bandwidth. Nowadays, the last mile
problem continuous to be the bottle neck in the global communication network....
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The second volume of the book concerns the characterization approach of photonic crystals, photonic crystal lasers, photonic crystal waveguides and plasmonics including the introduction of innovative systems and materials. Photonic crystal materials promises to enable all-optical computer circuits and could also be used to make ultra low-power light sources.
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With the advent of multimedia, digital signal processing (DSP) of sound has emerged
from the shadow of bandwidth-limited speech processing. Today, the main applications
of audio DSP are high quality audio coding and the digital generation and
manipulation of music signals. They share common research topics including perceptual
measurement techniques and analysis/synthesis methods. Smaller but nonetheless
very important topics are hearing aids using signal processing technology and hardware
architectures for digital signal processing of audio.
Tăng tốc kết nối Internet đến 20% (Cable Users Only) 1.Đăng nhập với tài khoản "Administrator". 2. Start - Run - gõ gpedit.msc ,Enter 3. Mở nhánh "Local Computer Policy". 4. Sau đó mở nhánh "Administrative Templates" (dưới user Configuration). 5. Mở nhánh "Network". 6. Điểm sáng "QoS Packet Scheduler" ở ô bên trái. 7. Trong ô cửa sổ bên phải double-click vào thiết lập "Limit Reservable Bandwidth". 8. Trong nhãn settings chọn "Enabled". 9. Thay đổi "Bandwidth limit %" bằng 0. 10.
Sau đó mở nhánh "Administrative Templates" (dưới user Configuration). 5. Mở nhánh "Network". 6. Điểm sáng "QoS Packet Scheduler" ở ô bên trái. 7. Trong ô cửa sổ bên phải double-click vào thiết lập "Limit Reservable Bandwidth". 8. Trong nhãn settings chọn "Enabled". 9. Thay đổi "Bandwidth limit %" bằng 0. 10. Và đến các kết nối mạng của bạn Start=Control PanelNetwork & Internet connectionsNetwork Connections
To fulfill the ever increasing demands of internet based communication network, the
speed of computing as well as the speed of data processing should be high enough
with the transmission medium of enormous potential bandwidth having the vast
amount of information handling capabilities. On the other hand, conventional
electronic technology has already reached its ultimate speed limit (40 Gb/s) through
the limitations of miniaturization of chips and bandwidth limitation, and obviously it
will create data traffic jam in future internet based networking services....
PCM consists of three steps to digitize an analog signal:
Before we sample, we have to filter the signal to limit the maximum frequency of the signal as it affects the sampling rate.
Filtering should ensure that we do not distort the signal, ie remove high frequency components that affect the signal shape.
The Gigabit Threshold Will Fall
Not long ago, 100 Mbps seemed like enough.
Then Gigabit seemed like enough. Today, when
it comes to planning a cabling infrastructure,
10Gbps has emerged as the next step for satiating
enterprise network bandwidth requirements.
There always has been—and always will be—
a need for more bandwidth. Data-intensive
applications such as network storage and sharing
of imaging and engineering documents alone can
stretch the limits of a cabling system.
Limit network traffic to increase network performance. For example, if corporate policy does not allow video traffic on the network, ACLs that block video traffic could be configured and applied. This would greatly reduce the network load and increase network performance.
Provide traffic flow control. ACLs can restrict the delivery of routing updates. If updates are not required because of network conditions, bandwidth is preserved.
Provide a basic level of security for network access.
The other routing protocols have been proposed in WSN
to improve QoS other restrictions such as the delay.
The problem here is that the complexity of the routing protocol significantly increased with
integration of more than one QoS parameter. Indeed, define a QoS route meets
two or more countries not limited correlation (eg, delay, and bandwidth) is an NP-
complete problem (Mellouk et al, 2007), because many limitations optimal path
problem can not be solved in polynomial time.
For example, communicating between two PCs via a telephone line (connected between subscriber's
home and local office, then between local offices, and finally between local office and another
subscriber's home). The telephone line is an analog system. That means it can not be used for
digital transmission. If we try to transmit digital signals over the analog system, our bit rate or
bandwidth will be limited to a minimum. On a 4 kHz analog band limited system we can only
transmit at a maximum rate of roughly 1 kHz. Because a 1 kHz digital signal needs a bandwidth