-
Smart Grids provide many benefits for society. Reliability, observability across the
energy distribution system and the Exchange of information between devices are just
some of the features that make Smart Grids so attractive. One of the main products of
a Smart Grid is to data. The amount of data available nowadays increases fast and carries
several kinds of information. Smart metres allow engineers to perform multiple
measurements and analyse such data. For example, information about consumption,
power quality and digital protection, among others, can be extracted. However, the main
challenge in extracting information from data arises from the data quality. In fact, many
sectors of the society can benefit from such data. Hence, this information needs to be
properly stored and readily available. In this chapter, we will address the main concepts
involving Technology Information, Data Mining, Big Data and clustering for deploying
information on Smart Grids.
標簽：
Processing
Cities
Smart
Data
in
上傳時間：
2020-05-23
上傳用戶：shancjb
-
Smart Grids provide many benefits for society. Reliability, observability across the
energy distribution system and the Exchange of information between devices are just
some of the features that make Smart Grids so attractive. One of the main products of
a Smart Grid is to data. The amount of data available nowadays increases fast and carries
several kinds of information. Smart metres allow engineers to perform multiple
measurements and analyse such data. For example, information about consumption,
power quality and digital protection, among others, can be extracted. However, the main
challenge in extracting information from data arises from the data quality. In fact, many
sectors of the society can benefit from such data. Hence, this information needs to be
properly stored and readily available. In this chapter, we will address the main concepts
involving Technology Information, Data Mining, Big Data and clustering for deploying
information on Smart Grids.
標簽：
Processing
Cities
Smart
Data
上傳時間：
2020-05-25
上傳用戶：shancjb
-
Wireless penetration has witnessed explosive growth over the last two decades.
Accordingly, wireless devices have become much denser per unit area, resulting
in an overcrowded usage of wireless resources. To avoid radio interferences and
packet collisions, wireless stations have to Exchange control messages to coordinate
well. The existing wisdoms of conveying control messages could be classified into
three categories: explicit, implicit, or hybrid.
標簽：
Transmission
Attachment
Networks
Wireless
in
上傳時間：
2020-05-26
上傳用戶：shancjb
-
Wireless technologies like GSM, UMTS, LTE, Wireless LAN and Bluetooth have revolu-
tionized the way we communicate and Exchange data by making services like telephony and
Internet access available anytime and from almost anywhere. Today, a great variety of techni-
cal publications offer background information about these technologies but they all fall short
in one way or another. Books covering these technologies usually describe only one of the
systems in detail and are generally too complex as a first introduction. The Internet is also a
good source, but the articles one finds are usually too short and superficial or only deal with
a specific mechanism of one of the systems. For this reason, it was difficult for me to recom-
mend a single publication to students in my telecommunication classes, which I have been
teaching in addition to my work in the wireless telecommunication industry. This book aims
to change this.
標簽：
GSM
LTE-Advanced
上傳時間：
2020-05-27
上傳用戶：shancjb
-
Intensive development of digital technologies coincided in time with the beginning
of the new era in telecommunications. It made possible to formalize many proce-
dures of data Exchange and to atomize some operations which made providing of
serviceandmakeworkofmanytelecommunicationworkersmucheasier. Somenew
telecommunication technologies were born out of the necessity for use of specific
configurations of network elements and networks, as well as for a possibility of
providing maximum characteristics of efficiency combined with high requirements
to the stability of operation, the overcoming of different catastrophic situations and
deadlockconditions,such as failuresand ”pending”of the networkandthe like. The
thresholdbetweeninformationsystems andtelecommunicationsystems has become
practically invisible. It resulted in such a new term as ”infocommunication”
標簽：
Telecommunication+Systems
上傳時間：
2020-06-01
上傳用戶：shancjb
-
Recent advances in wireless communication technologies have had a transforma-
tive impact on society and have directly contributed to several economic and social
aspects of daily life. Increasingly, the untethered Exchange of information between
devices is becoming a prime requirement for further progress, which is placing an
ever greater demand on wireless bandwidth. The ultra wideband (UWB) system
marks a major milestone in this progress. Since 2002, when the FCC allowed the
unlicensed use of low-power, UWB radio signals in the 3.1–10.6GHz frequency
band, there has been significant synergistic advance in this technology at the cir-
cuits, architectural and communication systems levels. This technology allows for
devices to communicate wirelessly, while coexisting with other users by ensuring
that its power density is sufficiently low so that it is perceived as noise to other
users.
標簽：
Circuits
Wideband
Ultra
上傳時間：
2020-06-01
上傳用戶：shancjb
-
The wide deployment of wireless networks and mobile technologies, along with the
significant increase in the number of mobile device users, have created a very strong
demand on various wireless-based, mobile-based software application systems and
enabling technologies. This not only provides many new business opportunities and
challenges to wireless and networking service providers, mobile technology ven-
dors, and software industry and solution integrators, butalso changes and enhances
people’s lives in many areas, including communications, information sharing and
Exchange, commerce, home environment, education, and entertainment. Business
organizations and government agencies face new pressure fortechnology updatesto
upgrade their networking infrastructures with wireless connectivity to enhance
enterprise-oriented systems and solutions.
標簽：
Wireless-Based
Software
Systems
上傳時間：
2020-06-01
上傳用戶：shancjb
-
There is an unprecedented enthusiasm for radio frequency
identification (RFID) technologies today. RFID is based on the
Exchange of information carried by electromagnetic waves between a
label, or tag, and a reader. This technology is currently in full
economic expansion, which has manifested itself in widely backed
research activities, some of which will be examined in this book.
標簽：
Identification
Frequency
Sensors
Radio
and
上傳時間：
2020-06-08
上傳用戶：shancjb
-
Internet of Things (IoT) [26] is a new networking paradigm for cyber-physical
systems that allow physical objects to collect and Exchange data. In the IoT, physical
objects and cyber-agents can be sensed and controlled remotely across existing
network infrastructure, which enables the integration between the physical world
and computer-based systems and therefore extends the Internet into the real world.
IoT can find numerous applications in smart housing, environmental monitoring,
medical and health care systems, agriculture, transportation, etc. Because of its
significant application potential, IoT has attracted a lot of attention from both
academic research and industrial development.
標簽：
Technologies
Internet
Things
RFID
for
of
上傳時間：
2020-06-08
上傳用戶：shancjb
-
硬件組成：STC89C52單片機+最小系統+數碼管顯示模塊+數碼管驅動模塊+蜂鳴器模塊+按鍵模塊主要功能：1. 采用一個四位一體數碼管顯示比賽時間，時間格式如：15:00，兩個三位一體數碼管顯示甲乙兩對的比分，比分格式如：008；2. 比賽時間采用倒計時方式，以一秒的頻率減時，上電時默認初值為15:00。在沒有開始比賽時，“比賽時間”可以按鍵加減，比賽開始后不能修改；3. 甲乙隊比分采用三位數，上電初值為000，最大值為999，滿足常理要求，未開始比賽以及比賽結束后比分無法加減；4.本設計加了24秒倒計時功能，可通過按鍵隨時復位24秒。如果24秒違例，會啟動蜂鳴器報警，同時比賽時間暫停，處理好后按一下24秒復位鍵，比賽繼續；5. 比賽未開始之前，可以通過ADD1、DEC1鍵對比較時間的分鐘進調時，通過ADD2、DEC2鍵對比較時間的秒進行調時；6. 可隨時暫停/啟動比賽時間；7. 比賽進行時，可以通過ADD1、DEC1鍵對甲隊比分加、減，可以通過ADD2、DEC2對乙隊比分加、減。每按一次鍵，加/減1分；8. 當一節比賽完后，可以通過（Exchange）換場鍵換場，換場后，比分交換顯示，交換后，下一節比賽開始時，相應的比分加減鍵也隨之交換；9. 當比賽結束時，蜂鳴器發出聲音報警，提示比賽結束。
標簽：
51單片機
籃球計分器
上傳時間：
2022-07-03
上傳用戶：qingfengchizhu
