Разработка технологического процесса изготовления опоры двигателя

Выпускная квалификационная работа состоит из 4 разделов. В качестве задания был получен чертёж детали для которой разработан технологический маршрут изготовления. В технологическом разделе даны расчёты и пояснения для обеспечения требований, заданных конструктором. В качестве заготовки выбран круглый прокат алюминиевого сплава Д16Т. В конструкторском разделе спроектировано приспособления для сверления отверстий. В экономическом разделе выполнения расчёт стоимости детали. В разделе социальной ответственности и безопасности жизнедеятельности приведены основные требования для безопасной работы оператора за станком.This work is devoted to creation of technological process of the part "engine bracket" and consist of 4 parts. The first part is considering sequence of machining workpiece, calculation of operational time and cutting conditions. The second part is devoted to special device, which helps drilling accurate holes. The third and the forth parts are economical (where counting of the price is making) and social responsibility (where norms of pollution for workers and environment are calculated)

Characterization of AlGaN/GaN MISHFETs on a Si substrate by static and high-freguency measurements

AlGaN/GaN/Si metal-insulator-semiconductor heterostructure field-effect transistors (MISHFETs) with SiN and Al2O3 gate insulators are characterized by static and high-frequency measurements, and their performance is compared with nonpassivated and SiN-passivated heterostructure field-effect transistors (HFETs). The saturation drain current increased from similar to 500 mA mm(-1) for the HFETs to similar to 770 mA mm(-1) for the MISHFETs. The peak extrinsic transconductance of the MISHFETs (147 mS mm(-1) for 8 nm SiN and 220 mS mm(-1) for 4 nm Al2O3) is higher than expected due to the increased gate-to-channel separation. Similarly, small signal microwave characterization yielded an increase in the current gain cut-off frequency (from 3.2 to 7.2 GHz) and the maximum frequency of oscillation (from 12.3 to 20.4 GHz) for the MISHFETs with 2 mu m gate length compared to the HFET counterparts. Finally, the density of trap states, evaluated from the frequency-dependent conductance measurements, was congruent to 3 x 10(12) cm(-2) eV(-1) for the HFETs but only congruent to 1.8 x 10(12) cm(-2) eV(-1) for the MISHFETs. All of these demonstrate the capability of AlGaN/GaN MISHFETs of preparing high-performance and cost-effective devices for high-power microwave applications on a Si substrate

Industrieraps-Biotechnologie. Teilvorhaben: Gentechnische Steigerung des Erucasaeuregehalts in Raps Abschlussbericht

Available from TIB Hannover: DtF QN1(52,56) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

Contexts of Child Development: Culture, Policy and Intervention

'Contexts of Child Development' is an inspiring and thought-provoking collection that aims to deepen our understanding of child development in order to positively influence the people, policies and practices that help shape children's lives. Drawing on a range of methodological, theoretical and practical perspectives, and on leading Australian and international research, the volume challenges us to consider issues as diverse as the continuing impact of past colonial policies and practices on Australian Aboriginal child development today; the ways in which a focus on 'learning through the arts' can be beneficial to other areas of development, including literacy; and the potentially disabling consequences of the socio-culturally biased construction of what constitutes a 'good childhood' which currently underpins policy in the UK. A key concern of the collection is to advance insights and understandings of child development in relation to questions of cultural diversity, social disadvantage and state-supported interventions. Hence, many of the contributions focus on the outcomes of child development in Australian Aboriginal communities, including Ernabella and Docker River in the Western Desert, Darnley Island in north-east Queensland, the Tiwi Islands in the Northern Territory, Yakanarra in the Kimberley, and the Yorta Yorta in rural Victoria. While the editors consider that the contributions collectively 'point to complex patterns of intergenerational reproduction of disadvantage for which there is no single intervention p oint', they conclude that the challenge for educators, pol icy makers, governments an d communities alike is to find and follow the ways and means by which it is possible to support the outcomes of child development in order that the deleterious effects of multiple disadvantage might be undone. [ This volume redefines the intersection of history, science, culture, and evidence about child development to address the modern Australian Aboriginal circumstance. Essential reading for those in politics, policy and practice. Professor Fiona Stanley AC, University of Western Australia.] Contributors: Julie Andrews, Gordon Briscoe, Courtney Cazden, Frances Christie, Robin Dalby, Samantha Disbray, Ute Eickelkamp, Jacqueline Goodnow, Pauline Fietz, Michael Gooda, Judith A. Griffin, Colleen Hayward, Allison James, Ilan Katz, Jill Korbin, David Lawrence, John De Maio, Francis Mitrou, Barbara Piscitelli, Glenn Pearson, Gary Robinson, Dorothy Scott, Carrington Shepherd, Sven Silburn, Gillian Wigglesworth, Steve Zubrick.List of Contributors -- Acknowledgements -- Map -- Foreword -- Introduction / Robinson, Eickelkamp, Goodnow, Katz. Contexts of Child Development: Culture, Policy and Intervention -- Section 1: Constructs of Aboriginal Wellbeing: Historical, cultural and social realities -- 1. Assimilation and Indifference: The paradoxical treatment of Indigenous children in Central Australia, 1914-1951 / Briscoe -- 2. Bringing up our Yorta Yorta Children / Andrews -- 3. Vulnerabilities, Families and Child Development: Crises affecting the young in a north Australian community / Robinson -- 4. Socialisation and the Shaping of Youth Identity at Docker River / Fietz -- 5. The Western Australian Aboriginal Child Health Survey: Are there any policy implications? / Zubrick et al -- Section 2: Childhood, Community and State: The challenge of intervention -- 6. Research and Action:Challenges, moves forward and unfinished tasks / Goodnow -- 7. Early Intervention and 'Evidence-based' Policy / Katz -- 8. Day Care or Early Education? Perspectives on the institutional provision for young children in the UK / James -- 9. Early Childhood and Community: Capacity building in early childhood networks / Scott -- 10. Child Neglect and Abuse across Cultures / Korbin -- Section 3: Play, Symbols and Language: Development and learning in and out of school -- 11. Play, Imagination and Early Experience: Sand storytelling and continuity of being among Anangu Pitjantjatjara girls / Eickelkamp -- 12. Images of Childhood: By children, about culture and identity / Piscitelli -- 13. A Longitudinal Study of Language Acquisition in Australian Aboriginal Children in Three Communities / Disbray & Wigglesworth -- 14. Advanced Literacy Development for the Years of Adolescence / Christie -- 15. A Longitudinal Follow-up Study of the Alumnae of a Middle-School Science and Literacy Program: Achieving and sustaining / Cazden -- References -- IndexJira Ticket : CDU-3 : Collection Development Manager made the decision that for the books that have this message " This book is copyright. Apart from any fair dealing to the purpose of private study, research, criticism or review as permitted under the Copyright Act, no part may be reproduced, by any process, without written permission. Enquiries should be made to the publisher, Charles Darwin University Press, Charles Darwin University, Darwin NT 0909, Australia" in the front they would treat CDU NTU Press as the copyright holder based on this statement. 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