A Complement to Genealogies in the Library of Congress

A Complement to Genealogies in the Library of Congress

Author: Library of Congress

Publisher: Genealogical Publishing Com

Published: 2012-09

Total Pages: 1148

ISBN-13: 9780806316680

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Previously published by Magna Carta, Baltimore. Published as a set by Genealogical Publishing with the two vols. of the Genealogies in the Library of Congress, and the two vols. of the Supplement. Set ISBN is 0806316691.


Individual-based Modeling and Ecology

Individual-based Modeling and Ecology

Author: Volker Grimm

Publisher: Princeton University Press

Published: 2013-11-28

Total Pages: 445

ISBN-13: 1400850622

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Individual-based models are an exciting and widely used new tool for ecology. These computational models allow scientists to explore the mechanisms through which population and ecosystem ecology arises from how individuals interact with each other and their environment. This book provides the first in-depth treatment of individual-based modeling and its use to develop theoretical understanding of how ecological systems work, an approach the authors call "individual-based ecology.? Grimm and Railsback start with a general primer on modeling: how to design models that are as simple as possible while still allowing specific problems to be solved, and how to move efficiently through a cycle of pattern-oriented model design, implementation, and analysis. Next, they address the problems of theory and conceptual framework for individual-based ecology: What is "theory"? That is, how do we develop reusable models of how system dynamics arise from characteristics of individuals? What conceptual framework do we use when the classical differential equation framework no longer applies? An extensive review illustrates the ecological problems that have been addressed with individual-based models. The authors then identify how the mechanics of building and using individual-based models differ from those of traditional science, and provide guidance on formulating, programming, and analyzing models. This book will be helpful to ecologists interested in modeling, and to other scientists interested in agent-based modeling.


Making Summer Count

Making Summer Count

Author: Jennifer Sloan McCombs

Publisher: Rand Corporation

Published: 2011

Total Pages: 119

ISBN-13: 0833052713

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Students typically lose knowledge and skills during the summer, particularly low-income students. Districts and private providers can benefit from the evidence on summer programming to maximize program effectiveness, quality, reach, and funding.