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In this volume, world leaders in potato research review historical and contemporary discoveries resulting in a range of advances. Topics include nutritional quality, yield, disease and insect resistance, processing, plant growth and development, and other aspects. The book also examines research yielding significant molecular resources that facilit
A practical guide that covers both in situ and ex situ techniques for plant diversity conservation The conservation and sustainable use of plant genetic resources is of increasing importance globally. Plant Conservation Genetics addresses this issue by providing an extensive overview of this emerging area of science, exploring various pr
The first paper describes a parallel model designed to solve a class of relatively simple problems from elementary physics, and discusses the implications for models of problem solving in general. The authors show how one of the most salient features of problem solving, sequentiality, can emerge naturally within a parallel model that has no explicit knowledge of how to sequence analysis. This model exploits a new type of parallel distributed processing that employs stochastic processors and is based on a formal mapping between parallel computation and thermal physics. The mathematical theory is this type of processing-harmony theory-is discussed in the second and third papers.
The second half of the twentieth century saw the University of Pennsylvania grow in size as well as in stature. On its way to becoming one of the world's most celebrated research universities, Penn exemplified the role of urban renewal in the postwar redevelopment and expansion of urban universities, and the indispensable part these institutions played in the remaking of American cities. Yet urban renewal is only one aspect of this history. Drawing from Philadelphia's extensive archives as well as the University's own historical records and publications, John L. Puckett and Mark Frazier Lloyd examine Penn's rise to eminence amid the social, moral, and economic forces that transformed major p...
In the last quarter of the twentieth century, urban colleges and universities found themselves enveloped by the poverty, crime, and physical decline that afflicted American cities. Some institutions turned inward, trying to insulate themselves rather than address the problems in their own backyards. Others attempted to develop better community relations, though changes were hard to sustain. Spurred by an unprecedented crime wave in 1996, University of Pennsylvania President Judith Rodin knew that the time for urgent action had arrived, and she set a new course of proactive community engagement for her university. Her dedication to the revitalization of West Philadelphia was guided by her rol...
Fixing Broken Cities explores the planning, execution, and impact of urban repopulation and investment strategies that were launched in the wake of two crises: late twentieth-century economic disinvestment and the outbreak of the COVID-19 pandemic. Because past practices could no longer serve as a reliable guide to future outcomes in this uncertain environment, any new initiatives had to involve a significant level of risk-taking. Based on the author’s experience as a policymaker and practitioner, this book provides detailed insights into the origins and outcomes of these high-risk strategies, along with an explanation of why they succeeded or failed. This new edition examines policy initi...