This first comprehensive overview of reactive extrusion technology for over a decade combines the views of contributors from both academia and industry who share their experiences and highlight possible applications and markets. They also provide updated information on the underlying chemical and physical concepts, summarizing recent developments in terms of the material and machinery used. As a result, readers will find here a compilation of potential applications for reactive extrusion to access new and cost-effective polymeric materials, while using existing compounding machines.
This book critically analyses the current education political strategy of cultivating excellence in education. It shows how the new policy for selecting talented students in Denmark deconstructs the compromise from which the comprehensive school was built and reduces equal opportunities. It discusses how the current practice of measurement, selection and guidance of talented students brings about significant changes in education policies, in pedagogic practices, a restructuring of school organisations, and changed requirements of teachers. It explains how the internal differentiation of education systems based on self-selection and free choice, but also on new assessment techniques, tends to widen the inequality gap between students. The analysis clearly shows the relationship between the circulation of new ideas and normative frameworks at international level, and their transfer into national policies, while situating these developments in a socio-historical perspective. The book illustrates by means of a concrete case study with important empirical data that demonstrate the reality and influence of this new policy on the day-to-day work of teachers.
This book examines the educational role of three international organizations created as part of the post-World War II multilateral architecture: the United Nations Educational, Scientific and Cultural Organization (UNESCO), the World Bank, and the Organisation for Economic Co-operation and Development (OECD). These organizations have significantly promoted and shaped education as a fundamental feature of the modernization of society and contributed to the globalization of educational norms, policies and technologies. Drawing on primary source materials and interviews, the book provides novel perspectives to the literature on the global governance of education by focusing on the historical entanglements, relations and power struggles between these three organizations, rather than treating them separately. The study sheds light on the homogenizing effects of globalized educational policy-making and the shifting power dynamics in the global governance of education. ‘This book makes a very distinctive and important contribution to the literature that critically analyses the influence of the global agencies on education globally; it goes beyond the standard discursive analyses of policy texts to also explore the history of those organisations through archival research and in-depth interviews of the key personnel. What emerges is a powerful analysis which locates those agencies within their historical epochs and shines a light on their tensions and micro-politics, both internally and between organisations.’ Paul Morris, Professor of Comparative Education, Institute of Education, University College London, UK ‘A must-read historical account of the intermingling, boundary setting and competition between the three big intergovernmental organizations (IOs) in education: OECD, UNESCO, and the World Bank. Different from other scholars that document how these IOs have transformed themselves in response to external and internal changes, Elfert and Ydesen draw attention to the relational aspect: how have these three IOs navigated conflict, carved niches, and used and abused each other to amplify and expand their own mission? How have they done so in an environment that is crowded with intergovernmental and international organizations, each with a claim to govern education globally?’ Gita Steiner-Khamsi, Professor of Comparative and International Education, Teachers College, Columbia University; UNESCO Chair of Comparative Education Policy of the Geneva Graduate Institute of International and Development Studies 'This volume is a thoughtful and timely work of scholarship. Understanding the roles of UNESCO, the OECD and the World Bank is central to understanding contemporary education in global perspective. Elfert and Ydesen’s historical analysis sets out in rigorous detail how these organisations have evolved, and what has shaped and driven this evolution. The historical analysis is complemented by contemporary interview data, facilitating an actor-level analysis as well as a broader picture. The book is conceptually and theoretically rich while being accessibly written; the authors manage complexity remarkably well. For anyone interested in global governance and the role of international organisations, or anyone who wants to understand in general how global educational agendas have developed and converged, this book is a most valuable read.' Michele Schweisfurth, Professor of Comparative and International Education, University of Glasgow, UK Chapter "UNESCO, the OECD and the World Bank: A Global Governance Perspective” is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.
“Plastics Industry 4.0” provides a sophisticated insight into the development of the plastics industry in terms of digitalization and Industry 4.0, i.e. the Fourth Industrial Revolution. The background to these increasingly important topics is discussed along with provision of the prerequisite knowledge regarding process complexity and modeling as well as data acquisition to build the foundation of data driven digital processes. Furthermore, the facets of so-called cyber-physical systems including their key components and interfaces are discussed and illustrated using industrial application as well as scientific use cases. Aimed at decision makers in the plastics industry, engineers in industry, including those in R&D and process and product development, as well as researchers and students in universities, this book provides the inspiration to connect with Plastics Industry 4.0, and thereby stimulate innovation in companies, processes, products, and research. Contents: - Introduction: Potentials, Benefits, and Challenges for Successful Implementation of Industry 4.0 - Data Acquisition and Process Monitoring as Enabler for Industry 4.0 - Cyber-Physical Systems - Models and Artificial Intelligence - Global Connectivity - Digital Engineering - Complex Value Chain - Assistant Systems
This definitive book provides a comprehensive account of the full range of dies used for extrusion of plastics and elastomers. The distinctive features of the various types of dies are described in detail. Expert advice on the configuration of dies is given, and the possibilities of computer-aided design, as well as its limitations, are demonstrated. Fundamentals and computational procedures are clearly explained so that no special prior knowledge of the subject is required. The mechanical configuration, handling, and maintenance of extrusion dies are described. Calibration procedures for pipes and profiles are also discussed. This book was written for plastics engineers who need daily support in their practical work in industry and science, as well as for students preparing for their professional life. The 4th edition is brought up to date with several important additions, including coverage of multilayer (>15 layer) dies, melt encapsulation, and simulation tools (rheological/thermal CFD simulations).
This first comprehensive overview of reactive extrusion technology for over a decade combines the views of contributors from both academia and industry who share their experiences and highlight possible applications and markets. They also provide updated information on the underlying chemical and physical concepts, summarizing recent developments in terms of the material and machinery used. As a result, readers will find here a compilation of potential applications for reactive extrusion to access new and cost-effective polymeric materials, while using existing compounding machines.
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