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The Practical SQL Handbook begins with a step-by-step introduction to SQL basics and examines the Issues involved in designing SQL-based database applications. It fully explores SQL s most popular implementations from industry leaders, Oracle, Microsoft, Sybase, and Informix.
標(biāo)簽：
step-by-step
introduction
Practical
SQL
上傳時(shí)間：
2014-01-21
上傳用戶：fhzm5658
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A large body of computer-aided techniques has been developed in recent years to assist
in the process of modeling, analyzing, and designing communication systems . These
computer-aided techniques fall into two categories: formula-based approaches, where the
computer is used to evaluate complex formulas, and simulation-based approaches, where the
computer is used to simulate the waveforms or signals that flow through the system. The
second approach, which involves “waveform”-level simulation (and often incorporates
analytical techniques), is the subject of this book.
Since performance evaluation and trade off studies are the central Issues in the analysis
and design of communication systems, we will focus on the use of simulation for evaluating
the performance of analog and digital communication systems with the emphasis on digitalcommunication systems.
標(biāo)簽：
computer-aided
techniques
developed
assist
上傳時(shí)間：
2014-01-01
上傳用戶：541657925
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matlab有限元網(wǎng)格劃分程序
DistMesh is a simple MATLAB code for generation of unstructured triangular and tetrahedral meshes. It was developed by Per-Olof Persson (now at UC Berkeley) and Gilbert Strang in the Department of Mathematics at MIT. A detailed description of the program is provided in our SIAM Review paper, see documentation below.
One reason that the code is short and simple is that the geometries are specified by Signed Distance Functions. These give the shortest distance from any point in space to the boundary of the domain. The sign is negative inside the region and positive outside. A simple example is the unit circle in 2-D, which has the distance function d=r-1, where r is the distance from the origin. For more complicated geometries the distance function can be computed by interpolation between values on a grid, a common representation for level set methods.
For the actual mesh generation, DistMesh uses the Delaunay triangulation routine in MATLAB and tries to optimize the node locations by a force-based smoothing procedure. The topology is regularly updated by Delaunay. The boundary points are only allowed to move tangentially to the boundary by projections using the distance function. This iterative procedure typically results in very well-shaped meshes.
Our aim with this code is simplicity, so that everyone can understand the code and modify it according to their needs. The code is not entirely robust (that is, it might not terminate and return a well-shaped mesh), and it is relatively slow. However, our current research shows that these Issues can be resolved in an optimized C++ code, and we believe our simple MATLAB code is important for demonstration of the underlying principles.
To use the code, simply download it from below and run it from MATLAB. For a quick demonstration, type "meshdemo2d" or "meshdemond". For more details see the documentation.
標(biāo)簽：
matlab有限元網(wǎng)格劃分程序
上傳時(shí)間：
2015-08-12
上傳用戶：凜風(fēng)拂衣袖
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This book provides an overview of recent innovations and achievements in the broad areas of cyber-physical systems (CPS), including architecture, networking, systems, applications, security, and privacy. The book discusses various new CPS technologies from diverse aspects to enable higher level of innovation towards intelligent life. The book provides insight to the future integration, coordination and interaction between the physical world, the information world, and human beings. The book features contributions from renowned researchers and engineers, who discuss key Issues from various perspectives, presenting opinions and recent CPS-related achievements.Investigates how to advance the development of cyber-physical systems
Provides a joint consideration of other newly emerged technologies and concepts in relation to CPS like cloud computing, big data, fog computing, and crowd sourcing
Includes topics related to CPS such as architecture, system, networking, application, algorithm, security and privacy
標(biāo)簽：
Cyber-Physical
Systems
上傳時(shí)間：
2019-04-21
上傳用戶：danyun
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The genesis for this book was my involvement with the development of the
SystemView (now SystemVue) simulation program at Elanix, Inc. Over several
years of development, technical support, and seminars, several Issues kept recur-
ring. One common question was, “How do you simulate (such and such)?” The sec-
ond set of Issues was based on modern communication systems, and why particular
developers did what they did. This book is an attempt to gather these Issues into a
single comprehensive source.
標(biāo)簽：
Communication
Simulation
Systems
上傳時(shí)間：
2020-05-26
上傳用戶：shancjb
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This book examines the technologies underlying the compression and trans-
mission of digital video sequences over networking platforms. The incorporated
study covers a large spectrum of topics related to compressed video communica-
tions. It presents to readers a comprehensive and structured analysis of the Issues
encountered in the transmission of compressed video streams over networking
environments.
標(biāo)簽：
Compressed
Video
Communications
上傳時(shí)間：
2020-05-26
上傳用戶：shancjb
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This work titled A Digital Phase Locked Loop based Signal and Symbol Recovery
System for Wireless Channel is intended to serve as a document covering funda-
mental concepts and application details related to the design of digital phase locked
loop (DPLL) and its importance in wireless communication. It documents some
of the work done during the last few years covering rudimentary design Issues,
complex implementations, and fixing configuration for a range of wireless propa-
gation conditions.
標(biāo)簽：
Digital
Locked
Phase
Loop
上傳時(shí)間：
2020-05-27
上傳用戶：shancjb
-
The genesis for this book was my involvement with the development of the
SystemView (now SystemVue) simulation program at Elanix, Inc. Over several
years of development, technical support, and seminars, several Issues kept recur-
ring. One common question was, “How do you simulate (such and such)?” The sec-
ond set of Issues was based on modern communication systems, and why particular
developers did what they did. This book is an attempt to gather these Issues into a
single comprehensive source.
標(biāo)簽：
Communication
Introduction
Systems
to
上傳時(shí)間：
2020-05-27
上傳用戶：shancjb
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When we started thinking about writing the first edition of this book a few years ago, we had been
working together for more than five years on the borderline between propagation and signal processing.
Therefore, it is not surprising that this book deals with propagation models and design tools for MIMO
wireless communications. Yet, this book should constitute more than a simple combination of these
two domains. It hopefully conveys our integrated understanding of MIMO, which results from endless
controversial discussions on various multi-antenna related Issues, as well as various interactions with
numerous colleagues. Obviously, this area of technology is so large that it is beyond our aim to cover all
aspects in details. Rather, our goal is to provide researchers, R&D engineers and graduate students with
a comprehensive coverage of radio propagation models and space–time signal processing techniques
for multi-antenna, multi-user and multi-cell networks.
標(biāo)簽：
Wireless
Networks
MIMO
上傳時(shí)間：
2020-05-28
上傳用戶：shancjb
-
When we started thinking about writing this book, we had been working together for more
than five years on the borderline between propagation and signal processing.Therefore, it
is not surprising that this book deals with propagation models and design tools for MIMO
wirelesscommunications.Yet, thisbookshouldconstitutemorethanasimplecombination
of these two domains. It hopefully conveys our integrated understanding of MIMO, which
results from endless controversial discussions on various multi-antenna related Issues, as
well as various interactions with numerous colleagues. Obviously, this area of technology
is so large that it was beyond our aim to cover all aspects in details. Rather, our goal has
been to provide researchers, R&D engineers and graduate students with a comprehensive
coverage of radio propagation models and space–time coding techniques.
標(biāo)簽：
Communications5
Wireless
MIMO
上傳時(shí)間：
2020-05-28
上傳用戶：shancjb
