Most questions in social and biomedical sciences are causal in nature: what would happen to individuals, or to groups, if part of their environment were changed? In this groundbreaking text, two world-renowned experts present statistical methods for studying such questions. This book starts with the notion of potential outcomes, each corresponding to the outcome that would be realized if a subject were exposed to a particular treatment or regime. In this approach, causal effects are comparisons of such potential outcomes. The fundamental problem of causal inference is that we can only observe one of the potential outcomes for a particular subject. The authors discuss how randomized experiments allow us to assess causal effects and then turn to observational studies. They lay out the assumptions needed for causal inference and describe the leading analysis methods, including, matching, propensity-score methods, and instrumental variables. Many detailed applications are included, with special focus on practical aspects for the empirical researcher.

The principles of gauge symmetry and quantization are fundamental to modern understanding of the laws of electromagnetism, weak and strong subatomic forces and the theory of general relativity. Ideal for graduate students and researchers in theoretical and mathematical physics, this unique book provides a systematic introduction to Hamiltonian mechanics of systems with gauge symmetry. The book reveals how gauge symmetry may lead to a non-trivial geometry of the physical phase space and studies its effect on quantum dynamics by path integral methods. It also covers aspects of Hamiltonian path integral formalism in detail, along with a number of related topics such as the theory of canonical transformations on phase space supermanifolds, non-commutativity of canonical quantization and elimination of non-physical variables. The discussion is accompanied by numerous detailed examples of dynamical models with gauge symmetries, clearly illustrating the key concepts.

The focus of this book is the P versus NP Question and the theory of NP-completeness. It also provides adequate preliminaries regarding computational problems and computational models. The P versus NP Question asks whether or not finding solutions is harder than checking the correctness of solutions. An alternative formulation asks whether or not discovering proofs is harder than verifying their correctness. It is widely believed that the answer to these equivalent formulations is positive, and this is captured by saying that P is different from NP. Although the P versus NP Question remains unresolved, the theory of NP-completeness offers evidence for the intractability of specific problems in NP by showing that they are universal for the entire class. Amazingly enough, NP-complete problems exist, and furthermore hundreds of natural computational problems arising in many different areas of mathematics and science are NP-complete.

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In this book, Li Min proposes a new paradigm for the foundation and emergence of the classical tradition in early China, from the late Neolithic through the Zhou period. Using a wide range of historical and archaeological data, he explains the development of ritual authority and particular concepts of kingship over time in relation to social memory. His volume weaves together the major benchmarks in the emergence of the classical tradition, particularly how legacies of prehistoric interregional interactions, state formation, urban florescence and collapse during the late third and the second millenniums BCE laid the critical foundation for the Sandai notion of history among Zhou elite. Moreover, the literary-historical accounts of the legendary Xia Dynasty in early China reveal a cultural construction involving social memories of the past and subsequent political elaborations in various phases of history. This volume enables a new understanding on the long-term processes that enabled a classical civilization in China to take shape.
Aside from archaeologists and historians of China, this book caters to scholars and students interested in the study of social memory, state formation and comparative studies of ancient civilizations. It provides an archaeological perspective on the genealogy of knowledge and power in their spatial, temporal, technological, and formal representations.

In an historical account of the growth and development of the field of cognitive anthropology, Roy D'Andrade examines how cultural knowledge is organised within and between human minds. He begins by examining the research carried out during the l950s and l960s which was concerned with how different cultures classify kinship relationships and the natural environment, and then traces the development of more complex and sophisticated cognitive theories of classification in anthropology which took place in the l970s and l980s. In an analysis of more recent developments, the author considers work involving cultural models, emotion, motivation and action. He concludes with a summary of the theoretical perspective of cognitive anthropology.

This is the first book to document the origins and early history of environmentalism, concentrating especially on its hitherto unexplained colonial and global aspects. It highlights the significance of Utopian, physiocratic and medical thinking in the history of environmental ideas. The book shows how the new critique of the colonial impact on the environment depended on the emergence of a coterie of professional scientists, especially in the Dutch, French and English maritime empires. The prime importance of the oceanic island 'Eden' as a vehicle for new conceptions of nature is emphasised, and the significance of colonial island environments in stimulating conservationist notions is underlined, revealing how, for the first time, the limitability of local and global resources could be recognised.

In this pithy and highly readable book, Brian Skyrms, a recognised authority on game and decision theory, investigates traditional problems of the social contract in terms of evolutionary dynamics. Game theory is skilfully employed to offer new interpretations of a wide variety of social phenomena, including justice, mutual aid, commitment, convention and meaning. The author eschews any grand, unified theory. Rather, he presents the reader with tools drawn from evolutionary game theory for the purpose of analysing and coming to understand the social contract. The book is not technical and requires no special background knowledge. As such, it could be enjoyed by students and professionals in a wide range of disciplines: political science, philosophy, decision theory, economics and biology.

The Phylogenetic Handbook is a broad, hands on guide to theory and practice of nucleotide and protein phylogenetic analysis. This second edition includes six new chapters, covering topics such as Bayesian inference, tree topology testing and the impact of recombination on phylogenies, as well as a detailed section on molecular adaptation. The book has a stronger focus on hypothesis testing than the previous edition, with more extensive discussions on recombination analysis, detecting molecular adaptation and genealogy-based population genetics. Many chapters include elaborate practical sections, which have been updated to introduce the reader to the most recent versions of sequence analysis and phylogeny software, including BLAST, FastA, Clustal, T-coffee, Muscle, DAMBE, Tree-puzzle, Phylip, MEGA, PAUP*, IQPNNI, CONSEL, ModelTest, Prottest, PAML, HYPHY, MrBayes, BEAST, LAMARC, SplitsTree, and RDP. Many analysis tools are described by their original authors, resulting in clear explanations that constitute an ideal teaching guide for advanced-level undergraduate and graduate students.

It is often supposed that the spectacular successes of our modern mathematical sciences support a lofty vision of a world completely ordered by one single elegant theory. In this book Nancy Cartwright argues to the contrary. When we draw our image of the world from the way modern science works - as empiricism teaches us we should - we end up with a world where some features are precisely ordered, others are given to rough regularity and still others behave in their own diverse ways. This patchwork makes sense when we realise that laws are very special productions of nature, requiring very special arrangements for their generation. Combining classic and newly written essays on physics and economics, The Dappled World carries important philosophical consequences and offers serious lessons for both the natural and the social sciences.

In Bibliography and the Sociology of Texts, D. F. McKenzie shows how the material form of texts crucially determines their meanings. He unifies the principal interests of both critical theory and textual scholarship to demonstrate that, as all works of lasting value are reproduced, re-edited and re-read, they take on different forms and meanings. By witnessing the new needs of their new readers these new forms constitute vital evidence for any history of reading. McKenzie shows this is true of all forms of recorded information, including sound, graphics, films, representations of landscape and the new electronic media. The bibliographical skills first developed for manuscripts and books can, he shows, be applied to a wide range of cultural documents. This book, which incorporates McKenzie's classic work on orality and literacy in early New Zealand, offers a unifying concept of texts that seeks to acknowledge their variety and the complexity of their relationships.