George Theodorakopoulos's Books

Path Problems in Networks

By: John Baras,George Theodorakopoulos

Write a review Read reviews Take a Quiz Solve Book Puzzle

The algebraic path problem is a generalization of the shortest path problem in graphs. Various instances of this abstract problem have appeared in the literature, and similar solutions have been independently discovered and rediscovered. The repeated appearance of a problem is evidence of its relevance. This book aims to help current and future researchers add this powerful tool to their arsenal, so that they can easily identify and use it in their own work. Path problems in networks can be conceptually divided into two parts: A distillation of the extensive theory behind the algebraic path problem, and an exposition of a broad range of applications. First of all, the shortest path problem is presented so as to fix terminology and concepts: existence and uniqueness of solutions, robustness to parameter changes, and centralized and distributed computation algorithms. Then, these concepts are generalized to the algebraic context of semirings. Methods for creating new semirings, useful for modeling new problems, are provided. A large part of the book is then devoted to numerous applications of the algebraic path problem, ranging from mobile network routing to BGP routing to social networks. These applications show what kind of problems can be modeled as algebraic path problems; they also serve as examples on how to go about modeling new problems. This monograph will be useful to network researchers, engineers, and graduate students. It can be used either as an introduction to the topic, or as a quick reference to the theoretical facts, algorithms, and application examples. The theoretical background assumed for the reader is that of a graduate or advanced undergraduate student in computer science or engineering. Some familiarity with algebra and algorithms is helpful, but not necessary. Algebra, in particular, is used as a convenient and concise language to describe problems that are essentially combinatorial. Table of Contents: Classical Shortest Path / The Algebraic Path Problem / Properties and Computation of Solutions / Applications / Related Areas / List of Semirings and Applications

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

Publisher

Springer Nature

Published Date

ISBN 10

3031799836

ISBN 13

9783031799839

Within the Warrior

There Lived a Broken Child

By: George Kakaletris

Write a review Read reviews Take a Quiz Solve Book Puzzle

Within the Warrior

There Lived a Broken Child

By: George Kakaletris

The book chronicles the events behind the breakdown of a marriage and how those events were based on a way of thinking founded on childhood tragedies and experiences. The work also chronicles the impact of those tragedies upon loved ones and friends, when the help necessary for liberation from a life of tragedy through proper counseling was not sought. Recorded within the book, is one man's struggle for redemption and reconciliation, of all that he lost or threw away, once the decision was reached and sought to bring an end to everything around him through a cycle of self-destruction. A cycle that was brought to a culminating point, on the modern day battlefields of Iraq.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

536

Publisher

Trafford Publishing

Published Date

ISBN 10

141209383X

ISBN 13

9781412093835

An Introduction to Models of Online Peer-to-Peer Social Networking

By: George Kesidis

Write a review Read reviews Take a Quiz Solve Book Puzzle

An Introduction to Models of Online Peer-to-Peer Social Networking

By: George Kesidis

This book concerns peer-to-peer applications and mechanisms operating on the Internet, particularly those that are not fully automated and involve significant human interaction. So, the realm of interest is the intersection of distributed systems and online social networking. Generally, simple models are described to clarify the ideas. Beginning with short overviews of caching, graph theory and game theory, we cover the basic ideas of structured and unstructured search. We then describe a simple framework for reputations and for iterated referrals and consensus. This framework is applied to a problem of sybil identity management. The fundamental result for iterated Byzantine consensus for a relatively important issue is also given. Finally, a straight-forward epidemic model is used to describe the propagation of malware on-line and for BitTorrent-style file-sharing. This short book can be used as a preliminary orientation to this subject matter. References are given for the interested student to papers with good survey and tutorial content and to those with more advanced treatments of specific topics. For an instructor, this book is suitable for a one-semester seminar course. Alternatively, it could be the framework for a semester's worth of lectures where the instructor would supplement each chapter with additional lectures on related or more advanced subject matter. A basic background is required in the areas of computer networking, probability theory, stochastic processes, and queueing. Table of Contents: Networking overview / Graphs / Games / Search in structured networks / Search in unstructured networks / Transactions, reputations, and referrals / False Referrals / Peer-to-peer file sharing / Consensus in dynamical belief systems / Byzantine consensus / Epidemics

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

111

Publisher

Springer Nature

Published Date

ISBN 10

3031799984

ISBN 13

9783031799983

Seismic Wave Propagation in Non-Homogeneous Elastic Media by Boundary Elements

By: George D. Manolis,Petia S. Dineva,Tsviatko V. Rangelov,Frank Wuttke

Write a review Read reviews Take a Quiz Solve Book Puzzle

Seismic Wave Propagation in Non-Homogeneous Elastic Media by Boundary Elements

By: George D. Manolis,Petia S. Dineva,Tsviatko V. Rangelov,Frank Wuttke

This book focuses on the mathematical potential and computational efficiency of the Boundary Element Method (BEM) for modeling seismic wave propagation in either continuous or discrete inhomogeneous elastic/viscoelastic, isotropic/anisotropic media containing multiple cavities, cracks, inclusions and surface topography. BEM models may take into account the entire seismic wave path from the seismic source through the geological deposits all the way up to the local site under consideration. The general presentation of the theoretical basis of elastodynamics for inhomogeneous and heterogeneous continua in the first part is followed by the analytical derivation of fundamental solutions and Green's functions for the governing field equations by the usage of Fourier and Radon transforms. The numerical implementation of the BEM is for antiplane in the second part as well as for plane strain boundary value problems in the third part. Verification studies and parametric analysis appear throughout the book, as do both recent references and seminal ones from the past. Since the background of the authors is in solid mechanics and mathematical physics, the presented BEM formulations are valid for many areas such as civil engineering, geophysics, material science and all others concerning elastic wave propagation through inhomogeneous and heterogeneous media. The material presented in this book is suitable for self-study. The book is written at a level suitable for advanced undergraduates or beginning graduate students in solid mechanics, computational mechanics and fracture mechanics.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

301

Publisher

Springer

Published Date

ISBN 10

3319452061

ISBN 13

9783319452067

Navigating Turbulent Waters

Greek Politics in the Era of Eleftherios Venizelos

By: George Kaloudis

Write a review Read reviews Take a Quiz Solve Book Puzzle

Navigating Turbulent Waters

Greek Politics in the Era of Eleftherios Venizelos

By: George Kaloudis

This work examines Greek political life and Eleftherios Venizelos from 1910 to 1936. To better understand the Greek political scene and Venizelos’ meteoric rise and ungraceful fall and to provide the necessary context, this book also considers politics on the island of Crete, Venizelos’ birthplace, from the early nineteenth to the early twentieth centuries. This work is not a biography of Eleftherios Venizelos. Instead, Venizelos is the instrument used to shed light into the unsettled waters of Greek politics.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

223

Publisher

Rowman & Littlefield

Published Date

ISBN 10

1498587399

ISBN 13

9781498587396

Path Problems in Networks

By: John Baras,George Theodorakopoulos

Write a review Read reviews Take a Quiz Solve Book Puzzle

Path Problems in Networks

By: John Baras,George Theodorakopoulos

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

Publisher

Springer Nature

Published Date

ISBN 10

3031799836

ISBN 13

9783031799839

Performance Modeling of Communication Networks with Markov Chains

By: Jeonghoon Mo,John Baras,George Theodorakopoulos

Write a review Read reviews Take a Quiz Solve Book Puzzle

Performance Modeling of Communication Networks with Markov Chains

By: Jeonghoon Mo,John Baras,George Theodorakopoulos

This book is an introduction to Markov chain modeling with applications to communication networks. It begins with a general introduction to performance modeling in Chapter 1 where we introduce different performance models. We then introduce basic ideas of Markov chain modeling: Markov property, discrete time Markov chain (DTMC) and continuous time Markov chain (CTMC). We also discuss how to find the steady state distributions from these Markov chains and how they can be used to compute the system performance metric. The solution methodologies include a balance equation technique, limiting probability technique, and the uniformization. We try to minimize the theoretical aspects of the Markov chain so that the book is easily accessible to readers without deep mathematical backgrounds. We then introduce how to develop a Markov chain model with simple applications: a forwarding system, a cellular system blocking, slotted ALOHA, Wi-Fi model, and multichannel based LAN model. The examples cover CTMC, DTMC, birth-death process and non birth-death process. We then introduce more difficult examples in Chapter 4, which are related to wireless LAN networks: the Bianchi model and Multi-Channel MAC model with fixed duration. These models are more advanced than those introduced in Chapter 3 because they require more advanced concepts such as renewal-reward theorem and the queueing network model. We introduce these concepts in the appendix as needed so that readers can follow them without difficulty. We hope that this textbook will be helpful to students, researchers, and network practitioners who want to understand and use mathematical modeling techniques. Table of Contents: Performance Modeling / Markov Chain Modeling / Developing Markov Chain Performance Models / Advanced Markov Chain Models.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

N/A

Published Date

ISBN 10

8303179985

ISBN 13

9788303179982

Book's by George Theodorakopoulos

Path Problems in Networks

Path Problems in Networks

Within the Warrior

Within the Warrior

An Introduction to Models of Online Peer-to-Peer Social Networking

An Introduction to Models of Online Peer-to-Peer Social Networking

Seismic Wave Propagation in Non-Homogeneous Elastic Media by Boundary Elements

Seismic Wave Propagation in Non-Homogeneous Elastic Media by Boundary Elements

Navigating Turbulent Waters

Navigating Turbulent Waters

Path Problems in Networks

Path Problems in Networks

Performance Modeling of Communication Networks with Markov Chains

Performance Modeling of Communication Networks with Markov Chains

Username

Password

Username

Password

Password again

Birthday

Email