Introduction to Chemical Graph Theory (Discrete Mathematics and Its Applications)

Introduction to Chemical Graph Theory is a concise introduction to the main topics and techniques in chemical graph theory, specifically the theory of topological indices. These include distance-based, degree-based, and counting-based indices. The book covers some of the most commonly used mathematical approaches in the subject. It is also written with the knowledge that chemical graph theory has many connections to different branches of graph theory (such as extremal graph theory, spectral graph theory). The authors wrote the book in an appealing way that attracts people to chemical graph theory. In doing so, the book is an excellent playground and general reference text on the subject, especially for young mathematicians with a special interest in graph theory. Key Features: <div style="margin-left: 2em"> <ul> <li style="list-style: none"> </li> <li>A concise introduction to topological indices of graph theory</li> <li style="list-style: none"> </li> <li>Appealing to specialists and non-specialists alike</li> <li style="list-style: none"> </li> <li>Provides many techniques from current research</li> <li style="list-style: none"> </li> </ul> </div> About the Authors: Stephan Wagner grew up in Graz (Austria), where he also received his PhD from Graz University of Technology in 2006. Shortly afterwards, he moved to South Africa, where he started his career at Stellenbosch University as a lecturer in January 2007. His research interests lie mostly in combinatorics and related areas, including connections to other scientific fields such as physics, chemistry and computer science. Hua Wang received his PhD from University of South Carolina in 2005. He held a Visiting Research Assistant Professor position at University of Florida before joining Georgia Southern University in 2008. His research interests include combinatorics and graph theory, elementary number theory, and related problems

Science & Math

Wagner, Stephan

Wang, Hua

Chemistry

CRC-Press

Introduction to Chemical Graph Theory is a concise introduction to the main topics and techniques in chemical graph theory, specifically the theory of topological indices. These include distance-based, degree-based, and counting-based indices. The book covers some of the most commonly used mathematical approaches in the subject. It is also written with the knowledge that chemical graph theory has many connections to different branches of graph theory (such as extremal graph theory, spectral graph theory). The authors wrote the book in an appealing way that attracts people to chemical graph theory. In doing so, the book is an excellent playground and general reference text on the subject, especially for young mathematicians with a special interest in graph theory. Key Features: <ul><ul>
<li>A concise introduction to topological indices of graph theory</li> <li>Appealing to specialists and non-specialists alike</li> <li>Provides many techniques from current research</li> </ul></ul>
About the Authors: Stephan Wagner grew up in Graz (Austria), where he also received his PhD from Graz University of Technology in 2006. Shortly afterwards, he moved to South Africa, where he started his career at Stellenbosch University as a lecturer in January 2007. His research interests lie mostly in combinatorics and related areas, including connections to other scientific fields such as physics, chemistry and computer science. Hua Wang received his PhD from University of South Carolina in 2005. He held a Visiting Research Assistant Professor position at University of Florida before joining Georgia Southern University in 2008. His research interests include combinatorics and graph theory, elementary number theory, and related problems

Access Control Management in Cloud Environments

This textbook introduces new business concepts on cloud environments such as secure, scalable anonymity and practical payment protocols for the Internet of things and Blockchain technology. The protocol uses electronic cash for payment transactions. In this new protocol, from the viewpoint of banks, consumers can improve anonymity if they are worried about disclosure of their identities in the cloud. Currently, there is not a book available that has reported the techniques covering the protocols with anonymizations and Blockchain technology. Thus this will be a useful book for universities to purchase.&nbsp; This textbook provides new direction for access control management and online business, with new challenges within Blockchain technology that may arise in cloud environments. One is related to the authorization granting process. For example, when a role is granted to a user, this role may conflict with other roles of the user or together with this role; the user may have or derive a high level of authority. Another is related to authorization revocation. For instance, when a role is revoked from a user, the user may still have the role. Experts will get benefits from these challenges through the developed methodology for authorization granting algorithm, and weak revocation and strong revocation algorithms.

Computers & Technology

Networking & Cloud Computing

Springer

Borehole Acoustic Logging – Theory and Methods (Petroleum Engineering)

Product Description \nThis book covers the principles, historical development, and applications of many acoustic logging methods, including acoustic logging-while-drilling and cased-hole logging methods. Benefiting from the rapid development of information technology, the subsurface energy resource industry is moving toward data integration to increase the efficiency of decision making through the use of advanced big data and artificial intelligence technologies, such as machine/deep learning. However, wellbore failure may happen if evaluations of risk and infrastructure are made using data mining methods without a complete understanding of the physics of borehole measurements. Processed results from borehole acoustic logging will constitute part of the input data used for data integration. Therefore, to successfully employ modern techniques for data assimilation and analysis, one must fully understand the complexity of wave mode propagation, how such propagation is influenced by the well, and the materials placed within the well (i.e., the cement, casing, and drill strings), and ultimately how waves penetrate into and are influenced by geological formations.\nState-of-the-art simulation methods, such as the discrete wavenumber integration method (DWM) and the finite difference method (FDM), are introduced to tackle the numerical challenges associated with models containing large material contrasts, such as the contrasts between borehole fluids and steel casings. Waveforms and pressure snapshots are shown to help the reader understand the wavefields under various conditions. Advanced data processing methods, including velocity analyses within the time and frequency domains, are utilized to extract the velocities of different modes. Furthermore, the authors discuss how various formation parameters influence the waveforms recorded in the borehole and describe the principles of both existing and potential tool designs and data acquisition schemes. 
This book greatly benefits from the research and knowledge generated over four decades at the Earth Resources Laboratory (ERL) of the Massachusetts Institute of Technology (MIT) under its acoustic logging program. 
Given its scope, the book is of interest to geophysicists (including borehole geophysicists and seismologists), petrophysicists, and petroleum engineers who are interested in formation evaluation and cementation conditions. In addition, this book is of interest to researchers in the acoustic sciences and to 4th-year undergraduate and postgraduate students in the areas of geophysics and acoustical physics.\nFrom the Back Cover \nThis book covers the principles, historical development, and applications of many acoustic logging methods, including acoustic logging-while-drilling and cased-hole logging methods. Benefiting from the rapid development of information technology, the subsurface energy resource industry is moving toward data integration to increase the efficiency of decision making through the use of advanced big data and artificial intelligence technologies, such as machine/deep learning. However, wellbore failure may happen if evaluations of risk and infrastructure are made using data mining methods without a complete understanding of the physics of borehole measurements. Processed results from borehole acoustic logging will constitute part of the input data used for data integration. Therefore, to successfully employ modern techniques for data assimilation and analysis, one must fully understand the complexity of wave mode propagation, how such propagation is influenced by the well, and the materials placed within the well (i.e., the cement, casing, and drill strings), and ultimately how waves penetrate into and are influenced by geological formations.\nState-of-the-art simulation methods, such as the discrete wavenumber integration method (DWM) and the finite difference method (FDM), are introduced to tackle the numerical challenges ass

Fehler, Michael C.

Toksöz, M. Nafi

Earth Sciences

About the Author\nProf. Hua Wang is currently a Full Professor at the University of Electronic Science and Technology of China and Team Leader of downhole information intelligent acquisition and processing. Before that he was Postdoctoral Researcher at Massachusetts Institute of Technology (from 2014 to 2018). He received his B.Sc. in Exploration Geophysics from China University of Petroleum, East China, in 2005. He received his Ph.D. in Exploration Geophysics from China University of Petroleum, Beijing, in 2012. The majority of his work has been dedicated to borehole geophysics, micro-seismicity induced by fluid injection in oil/gas exploration and geothermal exploitation, and exploration seismology. He has been working in the field of wave propagation in complex medium, especially in borehole, for over 15 years, with a number of grants in this area and a substantial number of research papers in reputation geophysics journal. He has several years of teaching experience in the field, and also worked as a Consultant Expert in a service company. He is now served as a co-Editor-in-Chief of Artificial Intelligence in Geosciences and an Associate Editor for the Journal of Petroleum Science and Engineering. He is also thePresident of the Southwest China Chapter of the Society of Petrophysicists and Well Log Analysts.\nProf. M. Nafi Toksöz is Robert R. Shrock Professor of Geophysics (Emeritus). He is the Founder of the Earth Resources Laboratory at Massachusetts Institute of Technology and was its Director from 1982 to 1998. He is also the Director of the George R. Wallace, Jr. Geophysical Observatory. He received his geophysical engineering degree at Colorado School of Mines and his M.S. and Ph.D. degrees in geophysics at the California Institute of Technology. He has been a faculty member in the Department of Earth, Atmospheric, and Planetary Sciences, M.I.T., since 1965. Prof. Toksöz has made major scientific contributions in many areas of geophysics, including seismic exploration, reservoir characterization, rock physics, plate tectonics, planetary interiors and earthquake seismology. He has received numerous scientific achievement awards including medals from NASA and Colorado School of Mines. In 1999, he was awarded with Honorary Membership by SEG. In 2006 he received the Harry Fielding Reid Medal of the Seismological Society of America. In 2010 he was presented with the Maurice Ewing Medal, the highest honor of SEG. He is a fellow of the American Geophysical Union, the Geological Society of America, Honorary member of the Society of Exploration Geophysicists, the Seismological Society of America and several other scientific societies. Prof. Toksöz is the author or co-author of more than 400 technical papers in geophysics, including many articles on geophysics and seismology. He has edited books and served on editorial boards of scientific journals. Prof. Toksöz has and continues to serve on scientific advisory and review committees for U.S. government agencies, universities, international organizations, and industry. His academic activities include teaching, leading several research projects, and advising a number of graduate students.\nDr. Michael Fehler received his Ph.D. in Geophysics from MIT in 1979. He then worked as an Assistant Professor at Oregon State University for five years before becoming a Staff Geoscientist at Los Alamos National Laboratory in 1984. At Los Alamos, he was the Leader of the Geophysics Group and later the Division Director of the Earth and Environmental Sciences Division. In 2008, he returned to MIT where he is a Senior Research Scientist and the Deputy Director of ERL. In addition to his work at MIT, Fehler is Technical Project Manager for Phase I of the SEG Advanced Modeling project (SEAM), an industry consortium for geophysical modeling. Fehler was Editor-in-Chief of the Bulletin of the Seismological Society of America for nine years beginning in 1995 and was President of the Seismological Soci

acupuncture to treat common skin diseases (paperback)(Chinese Edition)

China Medical Science and Technology Press

Mao Zedong and Yang Kaihui (paperback)

Central Literature Publishing House; 1 (January 1

The national higher TCM colleges teaching material :science of acupuncture and moxibustion(Chinese edition)9th version

China Chinese medicine press

Mechanism of organizational innovation and innovation policy-making of the modern project management [Paperback](Chinese Edition)

Northeastern University Press; 1 edition (December 1. 2007)

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