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標簽：
Information
connection
document
provided
上傳時間：
2017-08-25
上傳用戶：songyue1991
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nesc language introduction. nesC is an extension to C [2] designed to embody the structuring concepts and execution model of
TinyOS [1]. TinyOS is an event-driven operating system designed for sensor network nodes that
have very limited resources (e.g., 8K bytes of program memory, 512 bytes of RAM). TinyOS has
been reimplemented in nesC. This manual describes v1.1 of nesC, Changes from v1.0 are summarised
in Section 3.
標簽：
introduction
structuring
extension
language
上傳時間：
2017-09-04
上傳用戶：66666
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本書是英文版，但內容非常不錯，本書目錄如下：
Table of Contents
SIP—Understanding the Session Initiation Protocol, Second Edition
Foreword to the First Edition
Preface to - the Second Edition
Preface to - the First Edition
Chapter 1 - SIP and the Internet
Chapter 2 - Introduction to SIP
Chapter 3 - SIP Clients and Servers
Chapter 4 - SIP Request Messages
Chapter 5 - SIP Response Messages
Chapter 6 - SIP Header Fields
Chapter 7 - Related Protocols
Chapter 8 - Comparison to H.323
Chapter 9 - Wireless and 3GPP
Chapter 10 - Call Flow Examples
Chapter 11 - Future Directions
Appendix A - Changes in the SIP Specification from RFC 2543 to RFC 3261
標簽：
英文
上傳時間：
2014-01-06
上傳用戶：爺的氣質
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Computational models are commonly used in engineering design and scientific discovery activities for simulating
complex physical systems in disciplines such as fluid mechanics, structural dynamics, heat transfer, nonlinear
structural mechanics, shock physics, and many others. These simulators can be an enormous aid to engineers who
want to develop an understanding and/or predictive capability for complex behaviors typically observed in the
corresponding physical systems. Simulators often serve as virtual prototypes, where a set of predefined system
parameters, such as size or location dimensions and material properties, are adjusted to improve the performance
of a system, as defined by one or more system performance objectives. Such optimization or tuning of the
virtual prototype requires executing the simulator, evaluating performance objective(s), and adjusting the system
parameters in an iterative, automated, and directed way. System performance objectives can be formulated, for
example, to minimize weight, cost, or defects; to limit a critical temperature, stress, or vibration response; or
to maximize performance, reliability, throughput, agility, or design robustness. In addition, one would often
like to design computer experiments, run parameter studies, or perform uncertainty quantification (UQ). These
approaches reveal how system performance Changes as a design or uncertain input variable Changes. Sampling
methods are often used in uncertainty quantification to calculate a distribution on system performance measures,
and to understand which uncertain inputs contribute most to the variance of the outputs.
A primary goal for Dakota development is to provide engineers and other disciplinary scientists with a systematic
and rapid means to obtain improved or optimal designs or understand sensitivity or uncertainty using simulationbased
models. These capabilities generally lead to improved designs and system performance in earlier design
stages, alleviating dependence on physical prototypes and testing, shortening design cycles, and reducing product
development costs. In addition to providing this practical environment for answering system performance questions,
the Dakota toolkit provides an extensible platform for the research and rapid prototyping of customized
methods and meta-algorithms
標簽：
Optimization and Uncertainty Quantification
上傳時間：
2016-04-08
上傳用戶：huhu123456
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From the transition of analog to digital communication along with seamless mobility and
high computing power of small handheld devices, the wireless communications industry has
seen tremendous Changes leading to the integration of several telecommunication networks,
devices and services over last 30 years. The rate of this progress and growth has increased
particularly in the past decade because people no longer use their devices and networks for
voice only, but demand bundle contents such as data download/streaming, HDTV, HD video ,
3D video conferencing with higher efficiency, seamless connectivity, intelligence, reliability
and better user experience. Although the challenges facing service providers and
telecommunication companies differ by product, region, market size, and their areas of
concentration but time to market, efficient utilization of their assets and revenue expansion,
have impacted significantly how to manage and conduct their business while maintaining
sufficient margin.
標簽：
Convergence
Networks
Beyond
4G
of
上傳時間：
2020-05-26
上傳用戶：shancjb
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It is commonly accepted today that optical fiber communications have revolutionized
telecommunications. Indeed, dramatic Changes have been induced in the way we interact
with our relatives, friends, and colleagues: we retrieve information, we entertain and
educate ourselves, we buy and sell, we organize our activities, and so on, in a long list
of activities. Optical fiber systems initially allowed for a significant curb in the cost of
transmission and later on they sparked the process of a major rethinking regarding some,
generation-old, telecommunication concepts like the (OSI)-layer definition, the lack of
cross-layer dependency, the oversegmentation and overfragmentation of telecommunica-
tions networks, and so on.
標簽：
Networks
Metro
Core
and
上傳時間：
2020-05-27
上傳用戶：shancjb
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The telecommunications industry is undoubtedly in a period of radical change with
the advent of mobile broadband radio access and the rapid convergence of Internet
and mobile services. Some of these Changes have been enabled by a fundamental
shift in the underlying technologies; mobile networks are now increasingly based
on a pure Internet Protocol (IP) network architecture. Since the first edition of this
book was published in 2009, a multitude of connected devices from eBook readers
to smartphones and even Machine-to-Machine (M2M) technologies have all started
to benefit from mobile broadband. The sea change over the last few years is only the
beginning of a wave of new services that will fundamentally change our economy, our
society, and even our environment. The evolution towards mobile broadband is one of
the core underlying parts of this revolution and is the focus of this book.
標簽：
Networks
Packet
EPC
and
4G
上傳時間：
2020-05-27
上傳用戶：shancjb
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Changes in telecommunications are impacting all types of user
group, which include business users, traveling users, small and
home offices, and residential users. The acceptance rate of telecom-
munications and information services is accelerating significantly.
Voice services needed approximately 50 years to reach a very high
teledensity; television needed just 15 years to change the culture
and lives of many families; the Internet and its related services have
been penetrating and changing business practices and private com-
munications over the last 2 to 3 years.
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Telecommunications
Handbook
The
上傳時間：
2020-06-01
上傳用戶：shancjb
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Welcome to the world of wireless communications and the logical extension
to the broadband architectures that are emerging as the future of the
industry. No aspect of communications will be untouched by the wireless
interfaces;no part of our working environment will be left untouched either.
As the world Changes and the newer technologies emerge, we can expect to
see more in the line of untethered communications than in the wired inter-
faces.
標簽：
Broadband
Wireless
Handbook
上傳時間：
2020-06-01
上傳用戶：shancjb
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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
上傳用戶：shancjb
