Featuring eight innovative studies by prominent scholars of medieval art and architecture, this special issue of Medieval Encounters examines the specific means by which art and architectural forms, techniques, and ideas were transmitted throughout the medieval world (ca. 1000-1500). While focusing on the Mediterranean region, the collection also includes essays that expand this geographic zone into a cultural and artistic one by demonstrating contact with near and distant neighbors, thereby allowing an expanded understanding of the interconnectedness of the medieval world. The studies are united by a focus on the specific mechanisms that enabled artistic and architectural interaction, as well as the individuals who facilitated these transmissions. Authors also consider the effects and collaboration of portable and monumental arts in the creation of intercultural artistic traditions. Contributors are: Justine Andrews, Maria Georgopoulou, Ludovico Geymonat, Heather E. Grossman, Eva Hoffman, Melanie Michailidis, Renata Holod, Scott Redford and Alicia Walker.

This book describes how the rapid advancement in encryption and network computing gave birth to new tools and products that have influenced the local and global economy alike. One recent and notable example is the emergence of virtual currencies (such as Bitcoin) also known as cryptocurrencies. Virtual currencies introduced a fundamental transformation that affected the way goods, services and assets are exchanged. As a result of its distributed ledgers based on blockchain, cryptocurrencies not only offer some unique advantages to the economy, investors, and consumers, but also pose considerable risks to users and challenges for regulators when fitting the new technology into the old legal framework. The core of this proposed book is to present and discuss the evidence on financial asset capabilities of virtual currencies. The contributors of this volume analyze several interesting and timely issues such as the particularities of virtual currencies and their statistical characteristics; the diversification benefits of virtual currencies; the behavior and dependence structure between virtual currencies and the financial markets; the economic implications of virtual currencies, their effects, their price risk, and contagion spillovers in a unified and comprehensive framework; the future of virtual currencies and their distributed ledgers technology.

Political corruption has traditionally been presented as a phenomenon characteristic of developing countries, authoritarian regimes, or societies in which the value system favored tacit patrimony and clientelism. Recently, however, the thesis of an inverse correlation between corruption and economic and political development (and therefore democratic "maturity") has been frequently and convincingly challenged. Countries with a long democratic tradition, such as the United States, Belgium, Britain, and Italy, have all experienced a combination of headline-grabbing scandals and smaller-scale cases of misappropriation. In "Corrupt Exchanges," primary research on Italian cases (judicial proceedings, in-depth interviews, parliamentary documents, and press databases), combined with a cross-national comparison based on a secondary analysis of corruption in democratic systems, is used to develop a model to analyze corruption as a network of illegal exchanges. The authors explore in great detail the structure of that network, by examining both the characteristics of the actors who directly engage in the corruption and the resources they exchange. These processes of degeneration have caused a crisis in the dominant paradigm in both academic and political considerations of corruption. The book is organized around the analysis of the resources that are exchanged and of the different actors who take part. Politicians in business, illegal brokers, Mafia members, protected entrepreneurs, and party-appointed bureaucrats exchange resources on the illegal market, altering the institutional system of interactions between the state and the market. In this complex web of exchanges, bonds of trust are established that allow the corrupt exchange to thrive. The book will serve both as a theoretical approach to a political problem of large bearing on democratic institutions and a descriptive warning of a system in peril.

Molecular Magnetism: From Molecular Assemblies to the Devices reviews the state of the art in the area. It is organized in two parts, the first of which introduces the basic concepts, theories and physical techniques required for the investigation of the magnetic molecular materials, comparing them with those used in the study of classical magnetic materials. Here the reader will find: (i) a detailed discussion of the electronic processes involved in the magnetic interaction mechanisms of molecular systems, including electron delocalization and spin polarization effects; (ii) a presentation of the available theoretical models based on spin and Hubbard Hamiltonians; and (iii) a description of the specific physical investigative techniques used to characterize the materials. The second part presents the different classes of existing magnetic molecular materials, focusing on the possible synthetic strategies developed to date to assemble the molecular building blocks ranging from purely organic to inorganic materials, as well as on their physical properties and potential applications. These materials comprise inorganic and organic ferro- and ferrimagnets, high nuclearity organic molecules and magnetic and metallic clusters, spin crossover systems, charge transfer salts (including fulleride salts and organic conductors and superconductors), and organized soft media (magnetic liquid crystals and Langmuir-Blodgett films).

The rapid advancement in encryption and network computing gave birth to new tools and products that have influenced the local and global economy alike. One recent and notable example is the emergence of virtual currencies, also known as cryptocurrencies or digital currencies. Virtual currencies, such as Bitcoin, introduced a fundamental transformation that affected the way goods, services, and assets are exchanged. Virtual currencies are experiencing an increasing popularity in the financial markets and in portfolio management as can be classified as financial asset or commodities on a scale from pure medium of exchange advantages to pure store of value advantages. As a result of its distributed ledgers based on blockchain, cryptocurrencies offer some unique advantages to the economy, investors, and consumers, but also pose considerable risks to users and challenges for regulators when fitting the new technology into the old legal framework. Bitcoin for example may be useful in risk management and ideal for risk-averse investors in anticipation of negative shocks to the market. The core objective of this proposed book is to provide a comprehensive discussion on the important issues related to cryptocurrencies ranging from pricing, financial, legal to technological aspects.

Volume 43 of Reviews in Mineralogy and Geochemistry follows the 1986 Reviews in Mineralogy (Vol. 16) in approach but reflects significant changes in the field of Stable Isotope Geochemistry. In terms of new technology, new sub-disciplines, and numbers of researchers, the field has changed more in the past decade than in any other since that of its birth. Unlike the 1986 volume, which was restricted to high temperature fields, this book covers a wider range of disciplines. However, it would not be possible to fit a comprehensive review into a single volume. Our goal is to provide state-of-the-art reviews in chosen subjects that have emerged or advanced greatly since 1986. This volume was prepared for Short Course on Stable Isotope Geochemistry presented November 2-4, 2001 in conjunction with the annual meetings of the Geological Society of America in Boston, Massachusetts.