One of the goals of the first edition of this book back in 2005 was to present a coherent theory for K-Means partitioning and Ward hierarchical clustering. This theory leads to effective data pre-processing options, clustering algorithms and interpretation aids, as well as to firm relations to other areas of data analysis. The goal of this second edition is to consolidate, strengthen and extend this island of understanding in the light of recent developments. Moreover, the material on validation and interpretation of clusters is updated with a system better reflecting the current state of the art and with our recent ``lifting in taxonomies'' approach. The structure of the book has been streamlined by adding two Chapters: ``Similarity Clustering'' and ``Validation and Interpretation'', while removing two chapters: ``Different Clustering Approaches'' and ``General Issues.'' The Chapter on Mathematics of the data recovery approach, in a much extended version, almost doubled in size, now concludes the book. Parts of the removed chapters are integrated within the new structure. The change has added a hundred pages and a couple of dozen examples to the text and, in fact, transformed it into a different species of a book. In the first edition, the book had a Russian doll structure, with a core and a couple of nested shells around. Now it is a linear structure presentation of the data recovery clustering.
Cremona Groups and the Icosahedron focuses on the Cremona groups of ranks 2 and 3 and describes the beautiful appearances of the icosahedral group A5 in them. The book surveys known facts about surfaces with an action of A5, explores A5-equivariant geometry of the quintic del Pezzo threefold V5, and gives a proof of its A5-birational rigidity.
The authors explicitly describe many interesting A5-invariant subvarieties of V5, including A5-orbits, low-degree curves, invariant anticanonical K3 surfaces, and a mildly singular surface of general type that is a degree five cover of the diagonal Clebsch cubic surface. They also present two birational selfmaps of V5 that commute with A5-action and use them to determine the whole group of A5-birational automorphisms. As a result of this study, they produce three non-conjugate icosahedral subgroups in the Cremona group of rank 3, one of them arising from the threefold V5.
This book presents up-to-date tools for studying birational geometry of higher-dimensional varieties. In particular, it provides readers with a deep understanding of the biregular and birational geometry of V5.
Preface It’s not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change. —Charles Darwin We live in an era of rapid and unprecedented change. Driven by technological innovation and changes in the way we deliver services, the face of healthcare is undergoing a metamorphosis, shifting into a more person-based, technologically enabled, evidence-based, and responsive system. That is the theory, at least. But are health systems that are changing according to these plans heralding transformative change? And what do some of the best thinkers believe is the prole of their health system over the next 5–15 years? We believe this book represents the best attempt yet to answer those thorny questions. Very few people could reach into the health systems of 152 countries and territories and orchestrate a book of this magnitude. Jeffrey Braithwaite, as series editor, accompanied by regional editors, Russell Mannion, Yukihiro Matsuyama, Paul G. Shekelle, Stuart Whittaker, and Samir Al-Adawi, and supported by an extremely knowledgeable team at Macquarie University, Sydney, Australia, particularly Dr. Wendy James and Kristiana Ludlow, were just the team to accomplish this. The omnibus they have created is an invaluable source of predictions about the future scope and shape of health systems across low-, middle-, and highincome countries. It is a treasure trove of important information. People will use it as a practical guide to the future in many ways: it can be read for benet and learning by region, by theme, and by specic case study exemplars of the kinds of reforms people are enacting in their health systems, extrapolated across the medium-term time horizon. Most books do not do this. The fact that this group has been able to achieve this is an endorsement of the skills, efforts, ingenuity, and expertise of the editors, editorial team, and individual chapter authors. We commend this book and recommend it as a must-read to many stakeholder groups: students of the system, policy-makers, planners, futurists, and groups representing managers, clinicians, and patients—in fact, all those who have an interest in healthcare and its future success. We enjoyed dipping xii Preface into it and thinking about its many learning points. We are sure others will too. Wendy Nicklin RN, BN, MSc(A), CHE, FACHE, FISQua, ICD.D President, International Society for Quality in Health Care Clifford F. Hughes AO, MBBS, DSc, FRACS, FACS, FACC, FIACS (Hon), FAAQHC, FCSANZ, FISQua, AdDipMgt, Immediate Past President, International Society for Quality in Health Care
The environment of entrepreneurial activity is numerous and heterogeneous. It includes a large number of components, which have a different extent, nature and frequency of impact on the organization. The question of assessment methodology of the entrepreneurial activity strategic risk factors is sufficiently important. The aim of this study is to develop an assessment methodology model of the strategic risk factors of entrepreneurial activity with the application of a scenario-based approach to identify dependencies of the risk factors using statistical data for 10 years. By strategic risk factors are understood changes in the external common business environment. The following methods were used in this study: a) questionnaire of entrepreneurs and managers of small and medium enterprises, the Central Bank staff and scientists on the subject of selection of indicators characterizing the external business environment; b) correlation analysis; c) regression analysis; d) Delphi approach; e) scenario analysis methods. As a result of the conducted study the main factors influencing the entrepreneurial activity to the fullest degree were identified. Furthermore, a working hypothesis concerning the fact, that increase of standalone strategic risk factors not always exerts negative influence on the entrepreneurial activity was confirmed. The proposed tools of risk factors assessment and their influence on the entrepreneurial activity may be used both for assessment of the organization environment and for assessment of various risk situations aimed at further use of the obtained information when making decisions.
Although it has been more than 20 years since Communism crumbled in Central and Eastern Europe and the Soviet Union, many scholars and politicians still wonder what the lifting of the Iron Curtain has really meant for these former Communist countries. And, because these countries were largely closed off to the world for so long, there has yet to be an all-inclusive study on their administrative systems—until now. In Public Administration in Post-Communist Countries: Former Soviet Union, Central and Eastern Europe, and Mongolia, expert contributors supply a comprehensive overview and analysis of public administration in their respective post-Communist countries. They illustrate each country's transformation from an authoritarian system of governance into a modern, market-based, and in some cases, democratic government. The book covers the countries that were officially part of the Soviet Union (Russia, Ukraine, Moldova, Estonia, Lithuania, Georgia, Kazakhstan, and Kyrgyzstan); those that were theoretically independent but were subject to Soviet-dominated Communist rule (Bulgaria, Hungary, Romania, and Poland); as well as a satellite republic that was under significant Soviet influence (Mongolia). Each chapter includes a brief introduction to the specific country, an overview of politics and administration, and discussions on key aspects of public management and administration—including human resource management, public budgeting, financial management, corruption, accountability, political and economic reform, civil society, and prospects for future development in the region. The book concludes by identifying common themes and trends and pinpointing similarities and differences to supply you with a broad comparative perspective.