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A new type of cloak is discussed: one that gives all cloaked objects the appearance of a flat conducting
sheet. It has the advantage that none of the parameters of the cloak is singular and can in fact be made
isotropic. It makes broadband cloaking in the optical frequencies one step closer.
標簽：
appearance
discussed
cloaked
objects
上傳時間：
2017-03-30
上傳用戶：rishian
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A Design and Implementation of The Online Shopping System
Abstract: Along with the development of the computer ,the database technique is widespread in the application of Internet, more and more , providing more thoughtful and humanized service for the large network customer. Characteristic services have already become gradually the current as the application of Wed nowadays. This text studied a method of project which composed of characteristic page and dynamic state of technical customer according to the data connection rule, compared with some projects that adopt already on present nets, this project have the advantage of providing customers more simple ,reflective obvious meticulous use and so on..
標簽：
Implementation
development
Abstract
Shopping
上傳時間：
2014-12-04
上傳用戶：410805624
-
A digital filter structure for wideband filtering
is proposed. It consists of two allpass filters and a linearphase
FIR filter. One major advantage of this structure is
that the allpass filters are functions of zM which implies
that the maximal sample frequency is M times higher for
this structure than for the corresponding conventional
structures.
標簽：
structure
filtering
consists
proposed
上傳時間：
2014-01-21
上傳用戶：weixiao99
-
What you always wanted to know about networking but were afraid to ask!
* How networks and the Internet work
* How to build coherent, cost-effective network infrastructures
* How to design networks for maximum reliability and availability
* What you need to know about data center and application networking
* How to secure networks against today?s threats and attacks
* How to take advantage of the latest mobility technologies
* How virtualizing networks can help businesses leverage their network investments even further
* How to combine messaging, calendaring, telephony, audio, video, and web conferencing into a unified communications architecture
標簽：
networking
networks
always
afraid
上傳時間：
2013-12-25
上傳用戶：fandeshun
-
Your Cisco Networking Academy Course Booklet is designed as a study resource you can easily read, high-
light, and review on the go, wherever the Internet is not available or practical:
■ The text is extracted directly, word-for-word, from the online course so you can highlight important
points and take notes in the “Your Chapter Notes” section.
■ Headings with the exact page correlations provide a quick reference to the online course for your class-
room discussions and exam preparation.
■ An icon system directs you to the online curriculum to take full advantage of the images, labs, Packet
Tracer activities, and dynamic Flash-based activities embedded within the Networking Academy online
course interface.
標簽：
Switching
Wireless
LAN
and
上傳時間：
2020-05-27
上傳用戶：shancjb
-
Mobile and wireless application development has come a long way in the past few
years. It has progressed beyond the hype of wireless Web applications for consumers
to the reality of high-value mobile applications for corporate users. Opportunities
abound for creating new mobile and wireless applications that provide vital benefits to
any business. A sampling of these benefits includes increased worker productivity,
reduced processing costs, heightened accuracy, and competitive advantage. In contrast
is the concern that developing mobile and wireless applications will involve many new
technologies and concepts that many corporate developers are still learning to use.
標簽：
Essentials
Wireless
Mobile
Design
and
上傳時間：
2020-05-30
上傳用戶：shancjb
-
Many wireless communications channels consist of multiple signal paths from the
transmitter to receiver. This multiplicity of paths leads to a phenomenon known
as multipath fading. The multiple paths are caused by the presence of objects in the
physical environment that, through the mechanisms of propagation, alter the path of
radiated energy. These objects are referred to as scatterers. In the past, researchers
often looked at ways to mitigate multipath scattering, such as in diversity systems.
Multiple-input, multiple-output (MIMO) systems, on the other hand, use multipath
diversity to their advantage; a MIMO system has the ability to translate increased
spatial diversity into increased channel capacity.
標簽：
Multiple-Output
Multiple-Input
Channel
Models
上傳時間：
2020-05-31
上傳用戶：shancjb
-
The mature CMOS fabrication processes are available
in many IC foundries. It is cost-effective to leverage the
existing CMOS fabrication technologies to implement
MEMS devices. On the other hand, the MEMS devices
could also add values to the IC industry as the Moore’s law
reaching its limit. The CMOS MEMS could play a key role
to bridge the gap between the CMOS and MEMS
technologies. The CMOS MEMS also offers the advantage
of monolithic integration of ICs and micro mechanical
components.
標簽：
TECHNOLOGY
CMOS
MEMS
KEY
上傳時間：
2020-06-06
上傳用戶：shancjb
-
I wrote this book so that students, hobbyists, and engineers alike can take advantage of the Arduino
platform by creating several projects that will teach them about the engineering process. I also wanted to
guide the reader through introductory projects so that they could get a firm grasp on the Arduino
Language, and how to incorporate several pieces of hardware to make their own projects.
This book offers so much information on the Arduino, not just the basic LED projects but it
offers different peripherals such as Ultrasonic sensor, the Xbox? controller, Bluetooth, and much more.
This book also teaches the non-engineer to follow a process that will help them in future project (not just
Arduino projects).
標簽：
Engineering
Practical
Arduino
上傳時間：
2020-06-09
上傳用戶：shancjb
-
針對目前MSP430單片機實驗裝置較少、實驗內容少,而且無MSP430高端產品的實驗裝置,研制了基于MSP430F5529單片機的綜合實驗裝置,主要包括MSP430 Launch Pad和母板兩部分。較傳統的單片機實驗裝置增加了模擬電路的設置,設計的實驗能夠利用單片機的所有外設,可進行模塊基礎實驗和綜合實驗兩大類實驗,非常適合自動化和電氣信息類大學生學習使用。Concerning with the lack of experimental equipment and content based on MSP430,and especially,the experimental equipment of MSP430 senior products,an experimental equipment based on MSP430F5529 microcontroller is developed. It mainly consists of two parts： MSP430 Launch Pad and main board. Compared with traditional microcontroller experiment equipment,a few analog circuits were added. The experiment we set up takes advantage of all microcontroller peripherals. Students can do two kinds of experiments： module experiment and complex experiment.Therefore it fits university students in automation and electrical major very well.
標簽：
msp430f5529
單片機
上傳時間：
2022-04-13
上傳用戶：
