Net Theory And Applications

Driven by the request for increased productivity, flexibility, and competitiveness, modern civilization increasingly has created high-performance discrete event dynamic systems (DEDSs). These systems exhibit concurrent, sequential, competitive activities among their components. They are often complex and large in scale, and necessarily flexible and thus highly capital-intensive. Examples of systems are manufacturing systems, communication networks, traffic and logistic systems, and military command and control systems. Modeling and performance evaluation play a vital role in the design and operation of such high-performance DEDSs and thus have received widespread attention from researchers over the past two decades. One methodology resulting from this effort is based on timed Petri nets and related graphical and mathematical tools. The popularity that Petri nets have been gaining in modeling of DEDSs is due to their powerful representational ability of concurrency and synchronization; however these properties of DEDSs cannot be expressed easily in traditional formalisms developed for analysis of `classical' systems with sequential behaviors. This book introduces the theories and applications of timed Petri nets systematically. Moreover, it also presents many practical applications in addition to theoretical developments, together with the latest research results and industrial applications of timed Petri nets. Timed Petri Nets: Theory and Application is intended for use by researchers and practitioners in the area of Discrete Event Dynamic Systems.

High-level Petri nets are now widely used in both theoretical analysis and practical modelling of concurrent systems. The main reason for the success of this class of net models is that they make it possible to obtain much more succinct and manageable de scriptions than can be obtained by means of low-level Petri nets-while, on the other hand, they still offer a wide range of analysis methods and tools. The step from low-level nets to high-level nets can be compared to the step from assembly languages to modem programming languages with an elaborated type concept. In low-level nets there is only one kind of token and this means that the state of a place is described by an integer (and in many cases even by a boolean value). In high-level nets each token can carry complex information which, e. g. , may describe the entire state of a process or a data base. Today most practical applications of Petri nets use one of the different kinds of high-level nets. A considerable body of knowledge exists about high-level Petri nets this includes theoretical foundations, analysis methods and many applications. Unfortunately, the papers on high-level Petri nets have been scattered throughout various journals and collections. As a result, much of this knowledge is not readily available to people who may be interested in using high-level nets.

A comprehensive look at the emerging science of networks Network science helps you design faster, more resilient communication networks; revise infrastructure systems such as electrical power grids, telecommunications networks, and airline routes; model market dynamics; understand synchronization in biological systems; and analyze social interactions among people. This is the first book to take a comprehensive look at this emerging science. It examines the various kinds of networks (regular, random, small-world, influence, scale-free, and social) and applies network processes and behaviors to emergence, epidemics, synchrony, and risk. The book's uniqueness lies in its integration of concepts across computer science, biology, physics, social network analysis, economics, and marketing. The book is divided into easy-to-understand topical chapters and the presentation is augmented with clear illustrations, problems and answers, examples, applications, tutorials, and a discussion of related Java software. Chapters cover: Origins Graphs Regular Networks Random Networks Small-World Networks Scale-Free Networks Emergence Epidemics Synchrony Influence Networks Vulnerability Net Gain Biology This book offers a new understanding and interpretation of the field of network science. It is an indispensable resource for researchers, professionals, and technicians in engineering, computing, and biology. It also serves as a valuable textbook for advanced undergraduate and graduate courses in related fields of study.

This book provides empirically driven discussions and investigations in the relevance of Actor Network Theory (ANT) and its theoretical concepts. As our civilization evolves from a human to a technologically driven society, new socio-technical network of actors – in society, industry and government are emerging by the day. These networks of actors collaborate to produce contemporary goods and services; handle production processes; manage risks; develop social and commercial networks; develop policies; manage complexities; and create a new way of life. This book provides unique conceptual tools needed to analyze such processes, highlighting the effectiveness of ANT in fostering collaborations between governments, organizations and society.

In the spectrum of mathematics, graph theory which studies a mathe matical structure on a set of elements with a binary relation, as a recognized discipline, is a relative newcomer. In recent three decades the exciting and rapidly growing area of the subject abounds with new mathematical devel opments and significant applications to real-world problems. More and more colleges and universities have made it a required course for the senior or the beginning postgraduate students who are majoring in mathematics, computer science, electronics, scientific management and others. This book provides an introduction to graph theory for these students. The richness of theory and the wideness of applications make it impossi ble to include all topics in graph theory in a textbook for one semester. All materials presented in this book, however, I believe, are the most classical, fundamental, interesting and important. The method we deal with the mate rials is to particularly lay stress on digraphs, regarding undirected graphs as their special cases. My own experience from teaching out of the subject more than ten years at University of Science and Technology of China (USTC) shows that this treatment makes hardly the course di:fficult, but much more accords with the essence and the development trend of the subject.

This volume consists of the proceedings of the 29th International Conference on Applications and Theory of Petri Nets and Other Models of Concurrency (PETRI NETS 2008). The Petri Net conferences serve as annual meeting places to discuss the progress in the ?eld of Petri nets and related models of conc- rency. They provide a forum for researchers to present and discuss both app- cations and theoretical developments in this area. Novel tools and substantial enhancements to existing tools can also be presented. In addition, the conf- ences always welcome a range of invited talks that survey related domains, as well as satellite events such as tutorials and workshops. The 2008 conference had six invited speakers, two advanced tutorials, and four workshops. Detailed information about PETRI NETS 2008 and the related events can be found at http://ictt. xidian. edu. cn/atpn-acsd2008. The PETRI NETS 2008 conference was organized by the Institute of C- puting Theory andTechnologyat Xidian University,Xi'an, China, where it took place during June 23-27, 2008. We would like to express our deep thanks to the Organizing Committee, chaired by Zhenhua Duan, for the time and e?ort - vested in the conference and for all the help with local organization. We are also grateful for the ?nancial support of the National Natural Science Foundation of China (NSFC) (Grant No. 60433010), Xidian University, and the Institute of Computing Theory and Technology at Xidian University.

This book constitutes the proceedings of the 39th International Conference on Application and Theory of Petri Nets and Concurrency, PETRI NETS 2018, held in Bratislava, Slovakia, in June 2018. Petri Nets 2017 is co-located with the 19th International Conference on Application of Concurrency to System Design, ACSD 2018. The 15 regular and 8 tool papers, with 1 invited talk presented together in this volume were carefully reviewed and selected from 33 submissions. The focus of the conference is on following topics: Petri Nets Synthesis; Analysis and Model Checking; Languages; Semantics and Expressiveness; and Tools.