One of the main challenges in nuclear and particle physics in the last 20 years has been to understand how the proton''s spin is built up from its quark and gluon constituents. Quark models generally predict that about 60% of the proton''s spin should be carried by the spin of the quarks inside, whereas high energy scattering experiments have shown that the quark spin contribution is small OCo only about 30%. This result has been the underlying motivation for about 1000 theoretical papers and a global program of dedicated spin experiments at BNL, CERN, DESY and Jefferson Laboratory to map the individual quark and gluon angular momentum contributions to the proton''s spin, which are now yielding exciting results. This book gives an overview of the present status of the field: what is new in the data and what can be expected in the next few years. The emphasis is on the main physical ideas and the interpretation of spin data. The interface between QCD spin physics and the famous axial U(1) problem of QCD (eta and etaprime meson physics) is also highlighted. Sample Chapter(s). Chapter 1: Introduction (159 KB). Contents: Spin Experiments and Data; Dispersion Relations and Spin Sum Rules; g 1 Spin Sum Rules; Fixed Poles; The Axial Anomaly, Gluon topology and g (0) A; Chiral Symmetry and Axial U(1) Dynamics; QCD Inspired Models of the Proton Spin Problem; The Spin-Flavour Structure of the Proton; QCD Fits to g 1 Data; Polarized Quark Distributions; Polarized Glue o g(x, Q 2 ); Transversity; Deeply Virtual Compton Scattering and Exclusive Processes; Polarized Photon Structure Functions; Conclusions and Open Questions: How Does the Proton Spin?. Readership: Academics, as well as physicists working on particle and nuclear physics at the interface of theory and experiment.
Drugs, Crime, and Justice is an engaging, yet comprehensive, analysis of the interrelationships among drug use/abuse, crime, and justice. The first four chapters introduce readers to the interrelationships between drugs and crime, while the second later chapters provide readers with an overview of historical and contemporary policies, as well as a comprehensive review of research on policing drug markets, arresting drug offenders, and prosecution and sentencing of drug offenders in state and federal courts. Steven Belenko and Cassia Spohn also examine and assess the impact of the war on drugs and conclude with a discussion of recent policy changes such as drug courts and reform/repeal of mandatory minimum sentences and an examination of new and emerging drug policies in the 21st Century.
An examination of how the concept of “family” has been transformed over the last three centuries in the U.S., from its function as primary social unit to today’s still-evolving model. Based on a wide reading of letters, diaries and other contemporary documents, Mintz, an historian, and Kellogg, an anthropologist, examine the changing definition of “family” in the United States over the course of the last three centuries, beginning with the modified European model of the earliest settlers. From there they survey the changes in the families of whites (working class, immigrants, and middle class) and blacks (slave and free) since the Colonial years, and identify four deep changes in family structure and ideology: the democratic family, the companionate family, the family of the 1950s, and lastly, the family of the '80s, vulnerable to societal changes but still holding together.
This book presents a comprehensive, practical approach to the evaluation of movement disorders using phenomenological basic principles, new discoveries in phenomenological research, and core values of outpatient neurology. Movement Disorders Phenomenology begins with an overview of phenomenology and common approaches to movement disorder patients. Subsequent chapters then accurately and concisely relay information on major hypokinetic disorders such as atypical Parkinsonism, idiopathic Parkinson’s disease, cortical myoclonus, and complex motor tics. Expertly written text is further supplemented by patient vignettes at the beginning of select chapter that focus the reader's attention and highlight the urgency of the problem. These high quality videos aid in the astute clinical diagnosis of many movement disorders that are still largely dependent on visual pattern recognition in the clinic. The book closes with a timely discussion on the role of genetics in movement disorders. Written for the practicing physician, Movement Disorders Phenomenology is an indispensable reference for neurology residents, general neurologists, movement disorders fellows and clinicians, and to any clinician who encounters and evaluates patients in the outpatient arena.
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