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During the past three decades, the world has seen signifi cant changes in the telecom-
munications industry. There has been rapid growth in wireless communications, as
seen by large expansion in mobile systems. Wireless communications have moved
from fi rst-generation (1G) systems primarily focused on voice communications to
third-generation (3G) systems dealing with Internet connectivity and multi-media
applications. The fourth-generation (4G) systems will be designed to connect wire-
less personal area networks (WPANs), wireless local area networks (WLANs) and
wireless wide-area networks (WWANs).
標簽:
Communications
Networking
Wireless
上傳時間:
2020-06-01
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Contamination and electrostatic discharge (ESD) are now becoming recognized as factors
affecting yield and reliability in an ever-increasing number of industries. Whereas contam-
ination traditionally was recognized as affecting the semiconductor, disk drive, aerospace,
pharmaceutical, and medical device industries, today such industries as automobile and
food production are also discovering the benefits of contamination control. ESD control
has experienced a similar growth in applications.
標簽:
Contamination
Control
and
ESD
上傳時間:
2020-06-05
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Recent advancements in nanotechnology (NT) materials and growth of micro/
nanotechnology have opened the door for potential applications of microelectro-
mechanical systems (MEMS)- and NT-based sensors and devices. Such sensors and
devices are best suited for communications, medical diagnosis, commercial, military,
aerospace, and satellite applications. This book comes at a time when the future and
well-being of Western industrial nations in the twenty-first century’s global eco-
nomy increasingly depend on the quality and depth of the technological innovations
they can commercialize at a rapid pace.
標簽:
MEMS
上傳時間:
2020-06-06
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Since the 1990s the EU has been pursuing climate change mitigation targets. Following the
international commitment to the legally binding greenhouse gas reduction under the Kyoto
Protocol, the 2020 policy package consists of a set of binding legislation to ensure that the EU
meets its climate and energy targets for the year 2020. The package sets three key targets: 20%
reduction in greenhouse gas emissions (from 1990 levels), 20% of EU energy from renewables (as
well as a 10% target for renewable fuels) and 20% improvement in energy efficiency. The targets
were set by EU leaders in 2007 and enacted in legislation in 2009 3 . They are also headline targets of
the Europe 2020 strategy for smart, sustainable and inclusive growth.
標簽:
Preparatory
Ecodesign
Study
上傳時間:
2020-06-06
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Over the past few decades there has been an exponential growth in service robots
and smart home technologies, which has led to the development of exciting new
products in our daily lives. Service robots can be used to provide domestic aid for
the elderly and disabled, serving various functions ranging from cleaning to enter-
tainment. Service robots are divided by functions, such as personal robots, field
robots, security robots, healthcare robots, medical robots, rehabilitation robots and
entertainment robots. A smart home appears “intelligent” because its embedded
computers can monitor so many aspects of the daily lives of householders. For
example, the refrigerator may be able to monitor its contents, suggest healthy alter-
natives and order groceries. Also, the smart home system may be able to clean the
house and water the plants.
標簽:
Robotics
Service
Digital
within
Home
the
上傳時間:
2020-06-06
上傳用戶:shancjb
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This book is written for engineers involved in the operation, control, and
planning of electric power systems. In addition, the book provides information and
tools for researchers working in the fields of power system security and stability. The
book consists of two volumes. The first volume provides traditional techniques for the
stability analysis of large scale power systems. In addition, an overview of the main
drivers and requirements for modernization of the traditional methods for online
applications are discussed. The second volume provides techniques for online security
assessment and corrective action studies. In addition, the impact of variable generation
on the security of power systems is considered in the second volume. The first volume
may be considered as a background builder while the second volume is intended for
the coverage of edge techniques and methods for online dynamic security studies.
標簽:
Security
Dynamic
上傳時間:
2020-06-07
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This chapter surveys the high temperature and oxygen partial pressure
behavior of complex oxide heterostructures as determined by in situ synchrotron
X-ray methods. We consider both growth and post-growth behavior, emphasizing
the observation of structural and interfacial defects relevant to the size-dependent
properties seen in these systems.
標簽:
Metal-Oxides
Thin
Film
上傳時間:
2020-06-07
上傳用戶:shancjb
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Modern power systems involve large amount of investment. An electric power
system comprises of generation, transmission, and distribution of electric energy.
Growth of power systems has led to very complex networks extended across large
areas. In such situations, the proper functioning of a modern power system is
heavily dependent upon the healthy operation of the transmission lines within it.
Transmission lines are used to transmit a huge amount of power over a long
distance. But as these lines are located in the open atmosphere, they are highly
affected by different types of abnormal conditions or faults.
標簽:
Transmission
Protection
Line
上傳時間:
2020-06-07
上傳用戶:shancjb
-
stract
With global drivers such as better energy
consumption, energy efficiency and reduction of
greenhouse gases, CO 2 emission reduction has become
key in every layer of the value chain. Power Electronics
has definitely a role to play in these thrilling challenges.
From converters down to compound semiconductors,
innovation is leading to breakthrough technologies. Wide
BandGap, Power Module Packaging, growth of Electric
Vehicle market will game change the overall power
electronic industry and supply chain. In this presentation
we will review power electronics trends, from
technologies to markets.
標簽:
Electronics
Materials
Power
WBG
for
上傳時間:
2020-06-07
上傳用戶:shancjb
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The rapid growth of RFID use in various supply chain operations, which has
arisen from the development of Electronic Product Code (EPC) technology,
has created a need for the consideration of security issues in the adoption of that
technology.
標簽:
Cryptography
Lightweight
Networked
Systems
RFID
and
上傳時間:
2020-06-08
上傳用戶:shancjb