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The Use Case and Smart Grid Architecture Model Approach
This book introduces readers to the fundamentals of the IEC 62559 Use Case Methodology, explains how it is related to the Smart Grid Architecture Model (SGAM), and details how a holistic view for both architecture and requirements engineering can be achieved. It describes a standardized and holistic approach to requirements engineering for smart grid projects based on work conducted in the context of the EU M/490 standardization mandate. Over the last years, this method has been established in Europe as the basic building block of requirements engineering in the utilities sector. The authors present a canonical, structured approach that users can apply to the Use Case Methodology and the SGAM, as well as open tools for this purpose. The application in various domains outside the smart grid is also discussed, as it can be used for critical infrastructures or system-of-systems domains like Industrie 4.0 and Ambient Assisted Living. Accordingly, the book also presents various architecture models for different fields of application, like EMAM, SCIAM, RAMI 4.0, and MAF.
Isogenies and Endomorphism Rings of Abelian Varieties of Low Dimension
In this work we regard methods for computing isogenies between abelian varieties over finite fields. We develop new theoretical results leading to a new algorithm which for supersingular elliptic curves over F_p improves the previous approaches notably and which is as fast as algorithms for ordinary elliptic curves. In order to achieve this, we use restricted endomorphism rings to establish a connection to an ideal class group. We also show that isogenies under this reduction are defined over F_p. These results yield a simple description of F_p-rational supersingular isogeny graphs in an ordered level-structure, which provides the basis for the new computational method of feasible bi-directional search. MAGMA implementations reveal computational results which validate the preceding complexity analysis. Additionally, we also investigate Jacobians of hyperelliptic curves of genus two. Especially supersingular abelian varieties prove to be more difficult since approaches of the ordinary case cannot be generalized directly to this setting. engl.
Post-Quantum Cryptography
This book constitutes the refereed proceedings of the 4th International Workshop on Post-Quantum Cryptography, PQCrypto 2011, held in Taipei, Taiwan, in November/December 2011. The 18 revised full papers presented were carefully reviewed and selected from 38 submissions. The papers cover a wide range of topics in the field of post-quantum public key cryptosystems such as cryptosystems that have the potential to resist possible future quantum computers, classical and quantum attacks, and security models for the post-quantum era..
Abelian Varieties and Number Theory
This book is a collection of articles on Abelian varieties and number theory dedicated to Gerhard Frey's 75th birthday. It contains original articles by experts in the area of arithmetic and algebraic geometry. The articles cover topics on Abelian varieties and finitely generated Galois groups, ranks of Abelian varieties and Mordell-Lang conjecture, Tate-Shafarevich group and isogeny volcanoes, endomorphisms of superelliptic Jacobians, obstructions to local-global principles over semi-global fields, Drinfeld modular varieties, representations of etale fundamental groups and specialization of algebraic cycles, Deuring's theory of constant reductions, etc. The book will be a valuable resource to graduate students and experts working on Abelian varieties and related areas.
Into the Field
“A wonderfully eloquent introduction to the craft and challenges of reporting from around the world. . . . Powerful.” —James Fallows, The Atlantic Tracy Dahlby is an award-winning journalist who has reported internationally as a contributor to National Geographic magazine and served as a staff correspondent for Newsweek and the Washington Post. In this memoir of covering Asia, he takes readers behind the scenes to reveal “the stories behind the stories”—the legwork and (mis)adventures of a foreign correspondent on a mission to be the eyes and ears of people back home, helping them understand the forces and events that shape our world. Into the Field centers on the travel and repo...
Surveys in Combinatorics 2019
Eight articles provide a valuable survey of the present state of knowledge in combinatorics.
Research Directions in Number Theory
These proceedings collect several number theory articles, most of which were written in connection to the workshop WIN4: Women in Numbers, held in August 2017, at the Banff International Research Station (BIRS) in Banff, Alberta, Canada. It collects papers disseminating research outcomes from collaborations initiated during the workshop as well as other original research contributions involving participants of the WIN workshops. The workshop and this volume are part of the WIN network, aimed at highlighting the research of women and gender minorities in number theory as well as increasing their participation and boosting their potential collaborations in number theory and related fields.
Christina, Book 2: The Vision of the Good
The second book continues the story again from the perspective of her mother, Bernadette of Christinas development: the end of her school days, the revelation of her life plan and the impressive start of her work in public.Further topics in Book 2 are: the universal rules of life; how to follow our individual soul path and unfold our personal potential; support from our spiritual companions; practical tips for increasing individual and collective vibration frequency; the silent revolution of unconditional love; the importance of grounding for time-change people; the essential link between lateral thinking and spirituality; holistic science and positive technology; four possible consciousness...
