1.

Record Nr.

UNINA9911100001203321

Autore

Porubov Alexey V

Titolo

Amplification of nonlinear strain waves in solids / / Alexey V. Porubov

Pubbl/distr/stampa

Singapore ; ; River Edge, NJ, : World Scientific, c2003

ISBN

9786611934439

9781281934437

1281934437

9789812794291

9812794298

Edizione

[1st ed.]

Descrizione fisica

1 online resource (229 p.)

Collana

Series on stability, vibration, and control of systems. Series A ; ; v. 9

Disciplina

530.4/16

Soggetti

Stress waves

Solids

Differential equations, Nonlinear - Numerical solutions

Nonlinear waves

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references (p. 199-209) and index.

Nota di contenuto

Preface; Contents; 1. Basic concepts; 1.1 Single nonlinear waves of permanent shape; 1.2 Formation of nonlinear waves of permanent shape from an arbitrary input; 1.3 Amplification attenuation and selection of nonlinear waves; 2. Mathematical tools for the governing equations analysis; 2.1 Exact solutions; 2.2 Asymptotic solutions; 2.3 Numerical methods; 2.4 Use of Mathematica; 3. Strain solitary waves in an elastic rod; 3.1 The sources of nonlinearities; 3.2 Modelling of nonlinear strain waves in a free lateral surface elastic rod; 3.3 Double-dispersive equation and its solitary wave solution

3.4 Observation of longitudinal strain solitary waves3.5 Reflection of solitary wave from the edge of the rod; 4. Amplification of strain waves in absence of external energy influx; 4.1 Longitudinal strain solitary wave amplification in a narrowing elastic rod; 4.2 Strain solitary waves in an elastic rod embedded in another elastic external medium with sliding; 4.3 Strain solitary waves in an elastic rod with microstructure; 5. Influence of dissipative (active) external medium; 5.1 Contact problems: various approaches



5.2 Evolution of bell-shaped solitary waves in presence of active/ dissipative external medium5.3 Strain kinks in an elastic rod embedded in an active/ dissipative medium; 5.4 Influence of external tangential stresses on strain solitary waves evolution in a nonlinear elastic rod; 6. Bulk active or dissipative sources of the amplification and selection; 6.1 Nonlinear bell-shaped and kink-shaped strain waves in microstructured solids; 6.2 Nonlinear seismic solitary waves selection; 6.3 Moving defects induced by external energy flux; 6.4 Thermoelastic waves; Bibliography; Index

Sommario/riassunto

This book treats two problems simultaneously: sequential analytical consideration of nonlinear strain wave amplification and selection in wave guides and in a medium; demonstration of the use of even particular analytical solutions to nonintegrable equations in a design of numerical simulation of unsteady nonlinear wave processes. The text includes numerous detailed examples of the strain wave amplification and selection caused by the influence of an external medium, microstructure, moving point defects, and thermal phenomena. The main features of the book are: (1) nonlinear models of the stra

2.

Record Nr.

UNINA9911146262303321

Autore

Illick Joseph E.

Titolo

American Childhoods / / Joseph E. Illick

Pubbl/distr/stampa

Philadelphia : , : University of Pennsylvania Press, , [2013]

©2002

ISBN

9780812202328

0812202325

Edizione

[1st ed.]

Descrizione fisica

1 online resource (231 p.)

Disciplina

305.230973

Soggetti

Children - History - United States

Children - United States - Social conditions

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Bibliographic Level Mode of Issuance: Monograph

Nota di contenuto

Front matter -- Contents -- Preface -- Part I. Early America -- Chapter



1. American Indian Childhood -- Chapter 2. European American Childhood -- Chapter 3. African American Childhood -- Part II. Industrial America -- Chapter 4. Urban Middle-Class Childhood -- Chapter 5. Urban Working-Class Childhood -- Part III. Modern America -- 6. Suburban Childhood -- Chapter 7. Inner-City and Rural Childhoods -- Epilogue -- A Note on Sources -- Notes -- Index -- Acknowledgments

Sommario/riassunto

Selected by Choice magazine as an Outstanding Academic Title The experiences of children in America have long been a source of scholarly fascination and general interest. In American Childhoods, Joseph Illick brings together his own extensive research and a synthesis of literature from a range of disciplines to present the first comprehensive cross-cultural history of childhood in America. Beginning with American Indians, European settlers, and African slaves and their differing perceptions of how children should be raised, American Childhoods moves to the nineteenth century and the rise of industrialization to introduce the offspring of the emerging urban middle and working classes. Illick reveals that while rural and working-class children continued to toil from an early age, as they had in the colonial period, childhood among the urban middle class became recognized as a distinct phase of life, with a continuing emphasis on gender differences. Illick then discusses how the public school system was created in the nineteenth century to assimilate immigrants and discipline all children, and observes its major role in age-grouping children as well as drawing working-class youngsters from factories to classrooms. At the same time, such social problems as juvenile delinquency were confronted by private charities and, ultimately, by the state. Concluding his sweeping study, the author presents the progeny of suburban, inner-city, and rural Americans in the twentieth century, highlighting the growing disparity of opportunities available to children of decaying cities and the booming suburbs. Consistently making connections between economics, psychology, commerce, sociology, and anthropology, American Childhoods is rich with insight into the elusive world of children. Grounded firmly in social and cultural history and written in lucid, accessible prose, the book demonstrates how children's experiences have varied dramatically through time and across space, and how the idea of childhood has meant vastly different things to different groups in American society.