This book is an introduction to twistor theory and modern geometrical approaches to space-time structure at the graduate or advanced undergraduate level. It will be valuable also to the physicist as an introduction to some of the mathematics that has proved useful in these areas, and to the mathematician as an example of where sheaf cohomology and complex manifold theory can be used in physics.

Why do some political parties flourish, while others flounder? In this book, Meguid examines variation in the electoral trajectories of the new set of single-issue parties: green, radical right, and ethnoterritorial parties. Instead of being dictated by electoral institutions or the socioeconomic climate, as the dominant theories contend, the fortunes of these niche parties, she argues, are shaped by the strategic responses of mainstream parties. She advances a new theory of party competition in which mainstream parties facing unequal competitors have access to a wider and more effective set...

The establishment of electoral systems in Kazakhstan, Kyrgyzstan, and Uzbekistan presents a complex set of empirical puzzles as well as a theoretical challenge. Why did three states with similar cultural, historical, and structural legacies establish such different electoral systems? How did these distinct outcomes result from strikingly similar institutional design processes? Explaining these puzzles requires understanding not only the outcome of institutional design but also the intricacies of the process that led to this outcome. Moreover, the transitional context in which the three states...

This review of the accomplishments and future agendas of comparative historical research in the social sciences explores its strengths in explaining important worldwide outcomes (e.g., revolutions, social provision, democracy). It includes sections on substantive research accomplishments, methodology, and theory, and features essays by some of the most important political scientists and sociologists currently working.

The laws that legislatures adopt provide a crucial opportunity for elected politicians to define public policy. But the ways politicians use laws to shape policy vary considerably across polities. In some cases, legislatures adopt detailed and specific laws in an effort to micromanage policymaking processes. In others, they adopt general and vague laws that leave the executive and bureaucrats substantial discretion to fill in the policy details. What explains these differences across political systems, and how do they matter? The authors address these issues by developing and testing a...

Representing the first comprehensive study of its kind, this book evaluates the comparative performance of national environmental policies since the beginning of the modern environmental era. Unlike other comparative studies, it looks directly at the purpose of environmental policy: pollution reduction. Lyle Scruggs presents four major explanations of environmental performance which it evaluates through the comparative statistical analysis of data from seventeen affluent countries. The results often challenge conventional explanations of good performance.

This book helps explain one of the most intriguing and politically salient puzzles in comparative political economy: why some countries have much higher unemployment rates than others. Contrary to new classical economics the focus is on explaining distribution and equilibrium unemployment, and contrary to neo-corporatist theory the role of monetary policy and rational expectation is integral to the analysis. The book makes two central arguments. The first is that monetary policies affect equilibrium employment whenever wages are set above the firm level. The second argument focuses on the...

In most post-colonial regimes in sub-Saharan Africa, state power has been used to structure economic production in ways that have tended to produce economic stagnation rather than growth. In this book, Catherine Boone examines the ways in which the exercise of state power has inhibited economic growth, focusing on the case of Senegal. She traces changes in the political economy of Senegal from the heyday of colonial merchant capital in the 1930s to the decay of the neo-colonial merchant capital in the 1980s and reveals that old trading monopolies, commercial hierarchies and patterns of wealth...

This pioneering study of electoral fraud and reform focuses on Costa Rica, a country where parties gradually transformed a fraud-ridden political system into one renowned for stability and fair elections by the mid-twentieth century. Lehoucq and Molina draw upon a unique database of more than 1,300 accusations of ballot-rigging to show that, independently of social structural constraints, parties denounced fraud where electoral laws made the struggle for power more competitive. They explain how institutional arrangements generated opportunities for several executives to assemble legislative...

This book seeks to identify the motivations of individual perpetrators of ethnic violence. The work develops four models gleaned from existing social science literatures: Fear, Hatred, Resentment, and Rage. The empirical chapters apply the models to important events involving ethnic conflict in Eastern Europe, from the 1905 Russian Revolution to the 1990's collapse of Yugoslavia. Each historical chapter generates questions about the timing and target of ethnic violence. The four models are then applied to determine which is most effective in explaining the observed patterns of ethnic...