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One Entrepreneur’s Plan to Transform Africa
Fred Swaniker’s African Leadership Academy and his African Leadership Network are already helping thousands of young people become entrepreneurs, activists and professionals. His latest effort, the African Leadership Universities, could multiply that exponentially.
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6.637 Optical Signals, Devices, and Systems (MIT)
6.637 covers the fundamentals of optical signals and modern optical devices and systems from a practical point of view. Its goal is to help students develop a thorough understanding of the underlying physical principles such that device and system design and performance can be predicted, analyzed, and understood. Most optical systems involve the use of one or more of the following: sources (e.g., lasers and light-emitting diodes), light modulation components (e.g., liquid-crystal light modulato
Author(s): Warde, Cardinal

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative C

2.1 Diagrams as models

Diagrams come in many forms and uses, but for systems thinking and practice it is useful to think of them as models (meaning ‘representations of reality’ in everyday usage). The term ‘model’ is used in a variety of contexts, even when there is a more commonly used term especially appropriate to its own context: models of terrain are usually called ‘maps’; models of electrical components wired together are usually called ‘circuit diagrams’; and models of the configuratio
Author(s): The Open University

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Copyright © 2016 The Open University

TALAT Lecture 1502: Criteria in Material Selection
This lecture gives a background to why, by whom, when and how material selection is performed; it describes the pitfalls of non-systematic approaches; it gives the concept of pre-selection and how it is applied; it creates an understanding about unbiased selection of materials and how it is performed; it explains discriminating material selection and how it is applied; it demonstrates optimization in material selection and how it is applied. Elementary background in materials engineering is assu
Author(s): TALAT,Rolf Sandstrøm, University of Stockholm

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http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Kosher supermarket reopens two months after Paris attacks
The kosher supermarket where four hostages were killed in January by an Islamist gunman reopens in Paris. Justin Mitchell reports. Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financial, national, and international news. For over 160 years, Re
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1.2.2 Summary

  • The results of successive editions of the Eurobarometer show that in most EU countries only a very small percentage of people, around 5 per cent, declare having an exclusive European identity, while up to 50 per cent do not have any sense of European identity.

  • European political identity is weak and there is a great variation across states.


Author(s): The Open University

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Copyright © 2013 The Open University

Keep on learning

Study another free course

There are more than 800 courses on OpenLearn for you to c
Author(s): The Open University

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Copyright © 2016 The Open University

Pesticides Health and Safety posters

Authors: 
Andrea Rother, Leslie London and Eric Miller