Download or read book On the Foundations of Dynamic Coalitions written by Arbach, Youssef and published by Universitätsverlag der TU Berlin. This book was released on 2016-09-16 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Coalitions denote a temporary collaboration between different entities to achieve a common goal. A key feature that distinguishes Dynamic Coalitions from static coalitions is Dynamic Membership, where new members can join and others can leave after a coalition is set. This thesis studies workflows in Dynamic Coalitions, by analyzing their features, highlighting their unique characteristics and similarities to other workflows, and investigating their relation with Dynamic Membership. For this purpose, we use the formal model of Event Structures and extend it to faithfully model scenarios taken as use cases from healthcare. Event Structures allow for workflows modeling in general, and for modeling Dynamic Membership in Dynamic Coalitions as well through capturing the join and leave events of members. To this end, we first extend Event Structures with Dynamic Causality to address the dynamic nature of DCs. Dynamic Causality allows some events to change the causal dependencies of other events in a structure. Then, we study the expressive power of the resulting Event Structures and show that they contribute only to a specific kind of changes in workflows, namely the pre-planned changes. Second, we present Evolving Structures in order to support ad-hoc and unforeseen changes in workflows, as required by the use cases. Evolving Structures connect different Event Structures with an evolution relation which allows for changing an Event Structure during a system run. We consider different approaches to model evolution and study their equivalences. Furthermore, we show that the history of a workflow should be preserved in our case of evolution in Dynamic Coalitions, and we allow for extracting changes from an evolution to support Process Learning. Third, to capture the goals of DCs, we equip Evolving Structures with constraints concerning the reachability of a set of events that represents a goal. The former extensions allow for examining the changes and evolutions caused by members, and examining members’ contributions to goal satisfaction, through their join and leave events. Finally, we highlight many modeling features posed as requirements by the domain of our Dynamic-Coalition use cases, namely the healthcare, which are independent from the nature of Dynamic Coalitions, e.g. timing. We examine the literature of Event Structures for supporting such features, and we identify that the notion of Priority is missing in Event Structures. To this end, we add Priority to various kinds of Event Structures from the literature. Furthermore, we study the relation between priority on one side, and conjunctive causality, disjunctive causality, causal ambiguity and various kinds of conflict on the other side. Comparing to Adaptive Workflows, which are concerned with evolutions of workflows that occur as a response to changes, e.g. changes in the business environment or exceptions, this thesis shows that Dynamic-Coalition workflows are not only Adaptive but also Goal-Oriented. Besides, it adds one extra trigger for evolution in workflows—unique to Dynamic Coalitions—namely the join of new members who contribute to goal satisfaction in a Dynamic Coalition. Finally the thesis contributes to bridging the gap in modeling between theory and domain experts by supporting step-by-step modeling applied regularly in healthcare and other domains. Dynamische Koalitionen (DKen) bezeichnen eine temporäre Kollaboration zwischen verschiedenen Entitäten zum Erreichen eines gemeinsamen Ziels. Ein Schüsselaspekt, welcher dynamische Koalitionen von statischen Koalitionen unterscheidet ist die dynamische Mitgliedschaft, durch die neue Mitglieder hinzu- kommen und andere die Koalitionen verlassen können, nachdem sie entstanden ist. Diese Arbeit studiert Workflows in dynamische Koalitionen durch eine Analyse ihrer Eigenschaften, das Herausstellen ihrer einzigartigen Charakteristika und Ähnlichkeiten zu anderen Workflows und durch eine Untersuchung ihrer Beziehung zu dynamischer Mitgliedschaft. In diesem Sinne nutzen wir das formales Model der Ereignisstukturen (ESen) und erweitern es, um Fallstudien aus der Medizin angemessen zu modellieren. ESen erlauben sowohl eine generelle Workflow Modellierung als auch eine Darstellung von Eintritt- und Austrittereignissen von Mitgliedern. Zu diesem Zweck erweitern wir ESen zuerst um Dynamische Kausalität, um die dynamische Natur von DKs abzubilden. Dynamische Kausalität erlaubt bestimmten Ereignissen die kausalen Abhängigkeiten anderer Ereignissen in einer Struktur zu verändern. Dann untersuchen wir die Ausdrucksstärke der resutierenden ESen und zeigen, dass sie nur eine spezifische Art der Veränderung abbilden, die sogenannten vorgeplanten Veränderungen. Als Zweites präsentieren wir Evolving in ESen um ad-hoc- und unvorhergesehene Veränderungen zu unterstützen, wie es durch unsere Fallstudien benötigt wird. Evolving in ESen verbinden verschiedene ESen mit einer Relation, welche eine Veränderung einer ES während eines Ablaufes erlaubt. Wir ziehen verschiedene Ansätze der Modelevolution in Betracht und untersuchen ihre Äquivalenzen. Des Weiteren zeigen wir, dass in unserem Fall der Evolution in DKen die Geschichte eines Workflows erhalten bleiben muss und wir ermöglichen das Extrahieren von Veränderungen einer Evolution, um Process Learning zu unterstützen. Drittens: Um die Ziele von DKen abzubilden, fügen wir den Evolving in ESen mit Einschränkungen bezüglich der Erreichbarkeit einer Menge von Ereignissen hinzu, welche das Ziel repräsentieren. Die genannten Erweiterungen erlauben es sowohl die Änderungen und Evolutionen, die vom Mitgliedern verursacht werden als auch die Beiträge der Mitglieder zur Zielerreichung durch deren Entritt- und Austrittereignissen zu untersuchen. Schlussendlich, stellen wir viele Modellierungseigen- schaften dar, welche von den DK-Fallstudien aus der Medizin benötigt werden und unabhängig von der Natur der DKen sind, wie z.B. Timing. Wir untersuchen die Literatur zu ESen bezüglich Unterstützung für solche Eigenschaften und stellen fest, dass der Begriff Priorität in ESen fehlt. Daher fügen wir Priorität zu verschiedenen ESen aus der Literatur hinzu. Des Weiteren untersuchen wir die Beziehungen von Priorität auf zu Konjunktiver Kausalität, disjunktiver Kausalität, kausal Uneindeutigkeit und verschiedenen Formen von Konflikt. Im Vergleich zu Adaptive Workflows, welche sich mit der Evolution von Workflows beschäftigt, die als Reaktion auf Veränderungen entsteht, wie z.B. Veränderungen im Business Environment oder Exceptions, zeigt diese Arbeit das DKen nicht nur adaptiv sondern auch zielorientiert sind. Außerdem fügt sie einen zusätzlichen Auslöser für Evolution in Workflows hinzu, welcher ausschließlich DKen eigen ist: das Hinzukommen neuer Mitglieder welche zur Ziel- erreichung der DK beitragen. Zuletzt trägt diese Arbeit bei, die Lücke der Modellierung zwischen der Theorie und den Domänenexperten zu überbrücken, in dem sie eine Schritt-für-Schritt Modellierung unterstützt, welche regelmäßig in der Medizin und anderen Bereichen angewand wird.

Download or read book Dimensions of Dynamic Coalitions written by and published by . This book was released on 2006 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thinking and Working Politically in Development written by John Thayer Sidel and published by . This book was released on 2019 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Coalitions written by David P. Baron and published by . This book was released on 2014 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a theory of dynamic coalitions for a legislative bargaining game in which policies continue in effect in the absence of new legislation. We characterize Markov perfect equilibria with dynamic coalitions, which are decisive sets of legislators whose members strictly prefer preserving the coalition to having it end. Dynamic coalitions satisfy internal stability and exclusion risk conditions. They can be minimal winning or surplus and can award positive allocations to non-coalition members. Policies supported can be efficient or inefficient. Vested interests can support policies that no legislator would propose if forming a new coalition. If uncertainty is associated with policy implementation, a continuum of policies are supported. These equilibria have the same allocation in every period when the coalition persists. Dynamic coalitions also exist in which members tolerate a degree of implementation uncertainty, resulting in policies that can change without the coalition dissolving. We compare to experimental results.

Download or read book A Game Theoretic Perspective on Coalition Formation written by Debraj Ray and published by Oxford University Press. This book was released on 2007-11 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing upon and extending his inaugural Lipsey Lectures, Debraj Ray looks at coalition formation from the perspective of game theory. Ray brings together developments in both cooperative and noncooperative game theory to study the analytics of coalition formation and binding agreements.

Download or read book Dynamic Coalition Formation and the Core written by Tone Dieckmann and published by . This book was released on 1998 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Coalition Management Systems written by Keyu Jiang and published by . This book was released on 2001 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book E commerce written by Kyeong Kang and published by BoD – Books on Demand. This book was released on 2010-02-01 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: E-commerce provides immense capability for connectivity through buying and selling activities all over the world. During the last two decades new concepts of business have evolved due to popularity of the Internet, providing new business opportunities for commercial organisations and they are being further influenced by user activities of newer applications of the Internet. Business transactions are made possible through a combination of secure data processing, networking technologies and interactivity functions. Business models are also subjected to continuous external forces of technological evolution, innovative solutions derived through competition, creation of legal boundaries through legislation and social change. The main purpose of this book is to provide the reader with a familiarity of the web based e- commerce environment and position them to deal confidently with a competitive global business environment. The book contains a numbers of case studies providing the reader with different perspectives in interface design, technology usage, quality measurement and performance aspects of developing web-based e-commerce.

Download or read book Information and Communications Security written by Jianying Zhou and published by Springer Nature. This book was released on 2020-02-17 with total page 833 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 21th International Conference on Information and Communications Security, ICICS 2019, held in Beijing, China, in December 2019. The 47 revised full papers were carefully selected from 199 submissions. The papers are organized in topics on malware analysis and detection, IoT and CPS security enterprise network security, software security, system security, authentication, applied cryptograph internet security, machine learning security, machine learning privacy, Web security, steganography and steganalysis.

Download or read book Applied Cryptography and Network Security written by John Ioannidis and published by Springer. This book was released on 2005-05-20 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3rd International Conference on Applied Cryptography and Network Security (ACNS 2005) was sponsored and organized by ICISA (the International Commu- cations and Information Security Association). It was held at Columbia University in New York, USA, June 7–10, 2005. This conference proceedings volume contains papers presented in the academic/research track. ACNS covers a large number of research areas that have been gaining importance in recent years due to the development of the Internet, wireless communication and the increased global exposure of computing resources. The papers in this volume are representative of the state of the art in security and cryptography research, worldwide. The Program Committee of the conference received a total of 158 submissions from all over the world, of which 35 submissions were selected for presentation at the a- demic track. In addition to this track, the conference also hosted a technical/ industrial/ short papers track whose presentations were also carefully selected from among the submissions. All submissions were reviewed by experts in the relevant areas.

Download or read book Information Security and Privacy written by Colin Boyd and published by Springer. This book was released on 2005-07-11 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: ACISP 2005 was held at Queensland University of Technology in Brisbane, during July 4–6, 2005.

Download or read book Information Security and Cryptology written by Dengguo Feng and published by Springer Science & Business Media. This book was released on 2005-12-07 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the First SKLOIS (State Key Laboratory of Information Security) Conference on Information Security and Cryptology, CISC 2005, held in Beijing, China in December 2005. The 33 revised full papers and 32 short papers presented together with 2 invited papers were carefully reviewed and selected from 196 submissions. The papers are organized in topical sections on identity based cryptography, security modelling, systems security, signature schemes, symmetric key mechanisms, zero-knowledge and secure computations, threshold cryptography, intrusion detection systems, protocol cryptanalysis, ECC algorithms, applications, secret sharing, and denial of service attacks.

Download or read book Network Science for Military Coalition Operations Information Exchange and Interaction written by Verma, Dinesh and published by IGI Global. This book was released on 2010-04-30 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book is structured into sections that look at some of the challenges related to coalition operations in different types of networks, such as communications and information networks and human and cognitive networks, and looks at other issues that impact the operations of coalitions, the management and use of policies across different organizations"--Provided by publisher.

Download or read book Post Quantum Cryptography written by Tanja Lange and published by Springer. This book was released on 2018-04-03 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 9th International Workshop on Post-Quantum Cryptography, PQCrypto 2018, held in Fort Lauderdale, FL, USA, in April 2018. The 24 revised full papers presented were carefully reviewed and selected from 97 submissions. The papers are organized in topical sections on Code-based Cryptography; Cryptanalysis; Hash-based Cryptography; Isogenies in Cryptography; Lattice-based Cryptography; Multivariate Cryptography; Protocols; Quantum Algorithms.

Download or read book Advances in Cryptology CRYPTO 2004 written by Matt Franklin and published by Springer Science & Business Media. This book was released on 2004-08-04 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 24th Annual International Cryptology Conference, CRYPTO 2004, held in Santa Barbara, California, USA in August 2004. The 33 revised full papers presented together with one invited paper were carefully reviewed and selected from 211 submissions. The papers are organized in topical sections in linear cryptanalysis, group signatures, foundations, efficient representations, public key cryptanalysis, zero-knowledge, hash collision, secure computation, stream cipher cryptanalysis, public key encryption, bounded storage model, key management, and computationally unbounded adversaries.

Download or read book Public Key Cryptography PKC 2014 written by Hugo Krawczyk and published by Springer. This book was released on 2014-02-20 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 17th International Conference on Practice and Theory in Public-Key Cryptography, PKC 2014, held in Buenos Aires, Argentina, in March 2014. The 38 papers presented were carefully reviewed and selected from 145 submissions. The papers are organized in topical sections on chosen ciphertext security, re-encryption, verifiable outsourcing, cryptanalysis, identity and attribute-based encryption, enhanced encryption, signature schemes, related-key security, functional authentication, quantum impossibility, privacy, protocols.

Download or read book Security and Cryptography for Networks written by Rafail Ostrovsky and published by Springer Science & Business Media. This book was released on 2008-08-28 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 6th Conference on Security and Cryptography for Networks (SCN 2008) was held in Amal?, Italy, on September 10–12, 2008. The ?rst four editions of the conference where held in Amal?, while, two years ago, the ?fth edition was held in the nearby Maiori. This year we moved back to the traditional location. Security and privacy are increasing concerns in computer networks such as the Internet. The availability of fast, reliable, and cheap electronic communi- tion o?ers the opportunity to perform, electronically and in a distributed way, a wide range of transactions of a most diverse nature. The conference brought together researchersin the ?elds of cryptographyand securityin communication networkswith the goalof fostering cooperationand exchangeof ideas. The main topics of the conference this year included anonymity, implementations, auth- tication, symmetric-key cryptography, complexity-based cryptography, privacy, cryptanalysis, cryptographic protocols, digital signatures, public-key cryptog- phy, hash functions, identi?cation. The international Program Committee consisted of 24 members who are top experts in the conference ?elds. The PC received 71 submissions and selected 26 papers for presentation at the conference. These proceedings include the 26 accepted papers and the abstract of the invited talk by Shai Halevi.