Dialogic inquiry : towards a sociocultural practice and theory of education / / Gordon Wells [[electronic resource]]

• Record Nr.: UNINA9910780090803321
• Autore: Wells C. Gordon
• Pubbl/distr/stampa: Cambridge : , : Cambridge University Press, , 1999
• ISBN: 1-107-11563-9; 0-511-60589-7; 0-511-05101-8; 0-511-30210-X; 0-511-17299-0; 0-511-15194-2; 0-521-63133-5; 1-280-42027-8
• Descrizione fisica: 1 online resource (xx, 370 pages) : digital, PDF file(s)
• Collana: Learning in doing : social, cognitive and computational perspectives
• Disciplina: 370.15/23
• Soggetti: Learning, Psychology of; Language and education; Educational sociology; Inquiry (Theory of knowledge)
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Title from publisher's bibliographic system (viewed on 05 Oct 2015).
• Nota di bibliografia: Includes bibliographical references (p. 339-354) and indexes.
• Nota di contenuto: Introduction and acknowledgments ---- Part I. Establishing the Theoretical Framework. 1. The complementary contributions of Halliday and Vygotsky to a 'language-based theory of learning' --- 2. In search of knowledge --- 3. Discourse and knowing ---- Part II. Discourse, Learning and Teaching: 4. Text, talk and inquiry: schooling as semiotic apprenticeship. 5. Putting a tool to different uses: a re-evalution of the IRF sequence --- 6. From guessing to prediction: progressive discourse in the learning and teaching of science --- 7. Using the tool-kit of discourse in the activity of learning and teaching --- 8. Making meaning with text: a genetic approach to the mediating role of writing ---- Part III. Learning and Teaching in the Zone of Proximal Development. 9. On learning with and from our students --- 10. The ; zone of proximal development and its implications for learning and teaching.
• Sommario/riassunto: For more than a quarter of a century, the polemics surrounding educational reform have centered on two points of view: those who favor a 'progressive' child-centered form of education, and those who would prefer a return to a more structured, teacher-directed curriculum, which emphasizes basic knowledge and skills. Vygotsky's social constructivist theory offers an alternative solution, placing stress on co-construction of knowledge by more and less mature participants engaging in joint activity together, with semiotic mediation as the primary means whereby the less mature participants can seek solutions to everyday problems, using the resources existing in society. In addition to using illustrative examples from classroom studies, a comparative analysis of the theories and complementary developments in works by Vygotsky, and the linguist M. A. K. Halliday, are provided. This unique volume will be of tremendous benefit to those in the field of education, as well as to sociolinguists, psychologists and researchers.

Aumento della capacita di depurazione dei terreni / Giovanni Putzolu

• Record Nr.: UNISALENTO991004361635707536
• Autore: Putzolu, Giovanni
• Pubbl/distr/stampa: Torino : Associazione Suolo e Salute, 1983
• Descrizione fisica: 50 p. ; 22 cm
• Disciplina: 631.4
• Soggetti: Soils - Purification
• Lingua di pubblicazione: Italiano
• Formato: Materiale a stampa
• Livello bibliografico: Monografia

Demographic change in Sub-Saharan Africa / / Karen A. Foote, Kenneth H. Hill, and Linda G. Martin, editors ; Panel on the Population Dynamics of Sub-Saharan Africa, Committee on Population, Commission on Behavioral and Social Sciences and Education, National Research Council

• Record Nr.: UNINA9910970771203321
• Pubbl/distr/stampa: Washington, D.C., : National Academy Press, 1993
• ISBN: 9786610196142; 9781280196140; 1280196149; 9780309564328; 0309564328
• Edizione: [1st ed.]
• Descrizione fisica: xv, 379 p. : ill., maps
• Collana: Population dynamics of Sub-Saharan Africa
• Altri autori (Persone): FooteKaren A; HillKen <1945->; MartinLinda G. <1947->
• Disciplina: 301.3296
• Soggetti: Demographic transition - Africa, Sub-Saharan; Fertility, Human - Africa, Sub-Saharan; Africa, Sub-Saharan Population
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Bibliographic Level Mode of Issuance: Monograph
• Nota di bibliografia: Includes bibliographical references.
• Nota di contenuto: Intro -- DEMOGRAPHIC CHANGE IN SUB-SAHARAN AFRICA -- Copyright -- Preface -- Contents -- 1 Introduction -- REFERENCES -- 2 Fertility Levels, Differentials, and Trends -- INTRODUCTION -- SOURCES AND QUALITY OF DEMOGRAPHIC DATA IN AFRICA -- METHODS FOR ESTIMATING TOTAL FERTILITY RATES -- CHARACTERISTICS OF AFRICAN FERTILITY -- Estimates of Total Fertility Rates -- Shape of the Fertility Distribution -- First Births -- Timing of Subsequent Births -- Socioeconomic Differentials in Achieved Family Size -- Place of Residence -- Level of Education -- RECENT EVIDENCE OF A FERTILITY DECLINE IN COUNTRIES PARTICIPATING IN THE DHS -- Group A: Countries in Which Fertility Declines Have Occurred -- Group B: Countries in Which Fertility May be Declining -- COMPARISON OF ; RECENT FERTILITY TRENDS IN AFRICA AND OTHER DEVELOPING REGIONS -- CONCLUSIONS -- REFERENCES -- 3 The Proximate Determinants of Fertility -- INTRODUCTION -- DATA -- FRAMEWORK -- Marriage or Union Patterns -- Contraception -- Postpartum Infecundability -- Pathological or Primary Sterility -- Summary of Model -- EMPIRICAL RESULTS -- National-Level Results for DHS Countries -- Marriage -- Contraception -- Postpartum Infecundability -- Pathological Sterility -- Interpreting the Results -- Summary -- Differentials for DHS Countries -- Age -- Residence -- Education -- Change Over Time: Comparison of WFS and DHS Results -- Kenya -- Senegal -- Sudan -- Ghana -- CONCLUSION -- TECHNICAL NOTES -- Data Sources -- Derivation of Indices -- Index of Marriage -- Measured Births Outside Marriage and Adjusted Index of Marriage -- Index of Contraception -- Index of Postpartum Infecundability -- Index of Sterility -- Effects of Indices -- APPENDIX -- REFERENCES -- 4 Recent Trends in Marriage Ages -- INTRODUCTION -- CONCEPTUAL AND MEASUREMENT ISSUES -- Definitions -- Problems of Recall and of Age Reporting.; Measurement -- ASCERTAINING TIME TRENDS IN AGE AT MARRIAGE -- Retrospective Evidence from Surveys -- Evidence from Current Status Data -- AGE AT MARRIAGE AND FERTILITY -- Evidence from Retrospective Reports -- Proportions Ever Married and Children Ever Born -- Changes in Proportions Married and Children Ever Born -- CONCLUSION -- APPENDIX: MEDIAN AND MEAN AGE AT FIRST MARRIAGE -- REFERENCES -- 5 Trends in Childhood Mortality -- INTRODUCTION -- DATA DEVELOPMENTS SINCE 1987 -- NEW COUNTRY DATA AND RESULTS -- Botswana and Zimbabwe -- Middle and Eastern Africa -- Sudan -- Western Africa -- Senegal, Mali, Burkina Faso, and The Gambia -- Togo, Ghana, and Côte d'Ivoire -- Liberia -- Nigeria -- OVERVIEW OF TRENDS IN COUNTRIES WITH NEW DATA -- CONCLUSIONS ON CHILDHOOD MORTALITY TRENDS -- APPENDIX A: SUMMARIZATION PROCESS FOR TABLE 5-2: COUNTRY NOTES -- General Note on Methodology -- Country Analyses -- Botswana and Zimbabwe -- Middle and Eastern Africa -- Sudan -- Western Africa -- APPENDIX B -- REFERENCES -- 6 Adult Mortality -- INTRODUCTION -- SOURCES OF DATA -- METHODS OF ANALYSIS -- ADULT MORTALITY LEVELS -- Gender Differentials -- Age Patterns of Mortality -- Trends in Female Mortality -- Socioeconomic and Areal Differentials -- CAUSES OF DEATH -- CONCLUSIONS -- APPENDIX -- REFERENCES -- 7 Internal Migration, Urbanization, and Population Distribution -- INTRODUCTION -- INTERNAL MIGRATION -- Conceptual Issues and the State of the Art -- Data and Data Collection Methods -- Spatial Patterns -- Rural-Rural Migration -- Rural-Urban Migration -- Urban-Rural and Interurban Migration -- Return Migration -- Migration Selectivity and Differentials -- Age Selectivity -- Sex Differentials -- Educational Differentials -- Occupational Characteristics -- Determinants of Migration -- External Factors -- Government Policies and Programs -- Community-Level Variables.; Household Decisions and Considerations -- Environmental and Resource Factors -- URBANIZATION -- Conceptual and Measurement Issues -- Urbanization Levels and Trends -- Urban Population Size -- Rate of Urban Growth -- Proportion of Urban Population -- Components of Urban Population Growth -- Demographic Components -- POPULATION DISTRIBUTION AND DENSITY -- Conceptual and Measurement Issues -- Population Density -- Population Redistribution -- CONCLUSION -- REFERENCES -- 8 International Migration -- INTRODUCTION -- DATA SOURCES -- REGIONAL PATTERNS -- Western Africa -- Middle Africa -- Eastern Africa -- Southern Africa -- ; MIGRATION OF THE HIGHLY SKILLED AND EMIGRATION FROM THE CONTINENT -- EFFECTS OF INTERNATIONAL MIGRATION ON AGE AND SEX DISTRIBUTIONS -- Lesotho -- Mauritania -- Malawi -- Congo -- CONCLUSION -- REFERENCES -- 9 Models of the Demographic Effect of AIDS -- INTRODUCTION -- EPIDEMIOLOGY OF AIDS IN SUB-SAHARAN AFRICA -- PURPOSES AND TYPES OF HIV/AIDS MODELS: GENERAL CONSIDERATIONS -- EXISTING HIV/AIDS MODELS -- Statistical Extrapolation and Back-Calculation Models -- Epidemic Models -- Demographic/Behavioral Models -- Demographic Models -- Sexual Behavior Simulation Models -- Analytic Models -- Model Results -- UN/GPA Workshop Results -- Input Values -- Results -- Other Model Results -- Model Uncertainties -- Heterogeneity with Regard to Sexual and IV Drug Behavior -- Communicability of Groups with Regard to Sexual and IV Drug Behavior -- Probability of Transmission by Sexual Contact -- Cofactors -- Distribution of the Incubation Period -- Duration-Dependent Infectivity -- SUMMARY AND CONCLUSIONS -- REFERENCES.
• Sommario/riassunto: This overview includes chapters on child mortality, adult mortality, fertility, proximate determinants, marriage, internal migration, international migration, and the demographic impact of AIDS.