1.

Record Nr.

UNINA9910458156903321

Titolo

Romance and sex in adolescence and emerging adulthood [[electronic resource] ] : risks and opportunities / / edited by Ann C. Crouter, Alan Booth

Pubbl/distr/stampa

Mahwah, N.J., : Lawrence Erlbaum Associates, c2006

ISBN

1-282-32702-X

9786612327025

1-4106-1736-X

Descrizione fisica

1 online resource (289 pages)

Collana

The Penn State University family issues symposia series

Altri autori (Persone)

CrouterAnn C

BoothAlan <1935->

Disciplina

306.7/0835

Soggetti

Teenagers - Sexual behavior

Risk-taking (Psychology) in adolescence

Electronic books.

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 and indexes.

Nota di contenuto

Part I: What are the evolutionary origins of contemporary patterns of sexual and romantic relationships? Where does evolution leave off and where do history and culture begin? -- Part II: How do early family and peer relationships give rise to the quality of romantic relationships in adolescence and young adulthood? -- Part III: How do early romantic and sexual relationships influence people contemporaneously and later in life? -- Part IV: To what extent are current trends in sexual and romantic relationships problematic for individuals, families, and society? What are effective intervention approaches at the level of practice

Sommario/riassunto

Examines the nature and origin of adolescents' contemporary patterns of sexual and romantic relationships, spanning such diverse topics as the evolutionary roots of these behaviors. This book is useful for academicians and upper-lever undergraduate and graduate students in the fields of human development and family studies and psychology.



2.

Record Nr.

UNINA9910463148403321

Autore

Schachar Ronald A. <1941->

Titolo

The mechanism of accommodation and presbyopia [[electronic resource] /] / by Ronald A. Schachar

Pubbl/distr/stampa

Amsterdam, : Kugler Publications, 2012

ISBN

90-6299-858-5

Descrizione fisica

1 online resource (280 p.)

Disciplina

617.7/55

617.755

Soggetti

Presbyopia

Electronic books.

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 and index.

Nota di contenuto

1. History of Accomodation and the Steep Profile -- 2. Mechanism of Accomodation -- 3. Aspect Ratio of Vertebrate Lenses Predicts Accommodative Amplitude -- 4. Anatomy and Physiology -- 5. Experimental Evidence -- 6. Mathematical Modeling of Accommodation -- 7. Presbyopia and Age-related Ocular Hypertension -- 8. Importance of Controlled Studies -- 9. The Steep Profile: A Fundamental Structure in the Universe -- 10. Summary.

Sommario/riassunto

The human eye is a remarkable optical device. In less than a second, a young human eye can accommodate from infinity to closer than 10 cm. Accommodation occurs with minimal effort and can be rapidly repeated with no apparent evidence of fatigue. Unfortunately, maximum accommodation decreases throughout life and by the fifth decade leads to presbyopia, the inability to read at a normal working distance. Interestingly, the mechanism by which the human eye is able to adjust focus has been debated for over 300 years. No previous theory has been put forth that can account for all the physical chang