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4.1 The Milky Way

Figure 1 showed two spiral galaxies: NGC 5548, which has an active nucleus, and NGC 3277 which does not. If we accept that AGN are the result of accretion on to supermassive black holes at the centres of the galaxies which harbour them, it is natural to ask the question whether galaxies like NGC 3277, which do not have active nuclei, are without
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Looking at an advertisement
After looking at an advertisement you learn: - to recognise the advertisers' aims and strategies; - to examine the terms of the publicity; - determine the target audience.
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6.4 Collaborating objects
Enterprise systems are software applications that automate and integrate all many of the key business processes of an organisation. With some understanding of software development, you will learn about current development practices for this type of system and develop relevant skills to apply them to real-world problems. You will develop core skills in object-oriented analysis and design, allowing you to develop software that is fit for purpose, reusable and amenable to change.
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Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

Culture under Fire [Audio]
Speaker(s): Professor Helen Frowe, Issam Kourbaj, Vernon Rapley, Professor Eleanor Robson | From the recent destruction of Palmyra and the looting of the National Museum of Iraq, cultural artefacts are one of the many casualties of armed conflict. What exactly is cultural property and whose property is it? How should we weigh its value against other priorities during times of conflict? What risks should be taken to protect it, and who is responsible for rebuilding and restoring when the conflict
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Former foes honor the fallen on Gallipoli centenary
Britain's Prince Charles joins Turkish President Tayyip Erdogan in leading a memorial service to commemorate the 100th anniversary of one of World War One's bloodiest battles. Vanessa Johnston 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 busines
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Introduction

This unit will examine some of the key ideas connected with innovation in organisations. You will be introduced to some important concepts which are used to analyse innovation, in particular the distinction between innovation and invention. In exploring the theme of innovation, general links will be made to the implications for the business functions.

This material is from our archive and is an adapted extract from Understanding Business Functions (B202) which is n
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Dr. Howard Kirshner on stroke prevention
Watch video of Dr. Howard Kirshner speaking about stroke prevention. Kirshner spoke Feb. 8 as part of the Osher Lifelong Learning class, “Medical Advances.” The course is presented by faculty of the Vanderbilt University Medical Center and focuses on what the future of medicine holds. Physicians are now able to use a patient’s DNA to selectkeep reading »
Author(s): Norma Clippard

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2.4.1 Multimode distortion

With multimode fibre, the main cause of pulses spreading is the multiple paths that signals can traverse as they travel along the fibre. This phenomenon of multimode distortion is illustrated in Figure 5.


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Roof Types
Architectural Elements: Roof Types
Author(s): Oast House Archive

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Rights not set

17.508 The Rise and Fall of Democracy/ Regime Change (MIT)
Coups, civil wars, revolutions, and peaceful transitions are the "real stuff" of political science. They show us why politics matters, and they highlight the consequences of political choices in times of institutional crisis. This course will help you understand why democracies emerge and why they die, from ancient times to the recent wave of democratization in Southern Europe, Eastern Europe, and the developing world. Few things are more dramatic than the collapse of a political system, whether
Author(s): Lawson, Chappell

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2.1.1 A day in my life

I wake to a radio-alarm. It's controlled by a small computer that lets me set the time I want to wake up and the radio programme that will wake me.

I prepare breakfast on a cooker which has a small computer that controls the clock, timer, and other functions such as oven temperature.

I take my dog for a walk. She has a ‘microchip’ (i.e. a very small simple computer) implanted under her skin that will enable her to be traced if she is lost or stolen.

I take my son to his
Author(s): The Open University

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The Elegant Universe - Introduction to String Theory
A detailed introduction to sting theory and quantum mechanics. The video uses excellent, simple demonstrations of complex theories to make them understandable. Run time 53:49.

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17.3 The network

The network conveys the data on items purchased through to the database server. It also conveys data such as revised prices and special offers from the database server back to the checkout terminal. In both cases this may involve selecting an appropriate route through the network and manipulating, storing or retrieving data.


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Keep on learning

Study another free course

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

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The Body as Inspiration
The Body as Inspiration

00:01:12
© 2000–2016 The Metropolitan Museum of Art. All rights reserved.

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References

Anderson, D (1997) V&A Museum, A Common Wealth: Museums in the Learning Age. A Report to the Department for Culture, Media and Sport.
Osborne, K. (2004) Exeter Museums Service, at the MLA site Inspiring Learning for All, www.inspiringlearningforall.gov.uk [accessed 23 August 2004].
Inspiring Learning for All (2004) Quotation from a teacher from the London Museums Hub Focus Gro
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21H.102 The Emergence of Modern America 1865-Present (MIT)
This subject studies the changing structure of American politics, economics, and society from the end of the Civil War to the present. We will consider secondary historical accounts and primary documents to examine some of the key issues in the development of modern America: industrialization and urbanization; U.S. emergence as a global power; ideas about rights and equality; and the changing structures of gender, class, and race. This subject also examines the multiple answers that Americans ga
Author(s): Faculty, History Department

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How the Iowa Caucus Works
Each U.S. primary election season kicks off in Iowa. Learn the process behind one of the pivotal events of the general election. (02:03)

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2.2 Theories, documents and knowledge

Documentary evidence is often messy and inconsistent, and even where it seems to be ‘factual’ (for example in the form of official records) its precise meaning in terms of wider social processes is far from clear. There is uncertainty about what it means, as well as the representation of uncertainty and diversity in the images. In every case, the meaning of the evidence is dependent on interpretation, that is, the part of the theory we employ to understand what is going on.
Author(s): The Open University

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2.2 ICT systems in everyday life

In Activity 3 you identified some of the ICT systems and devices that you use for communication, which are part of your immediate environment. These devices do not operate in isolation but need to be part of an information and communication system – linked to other devices with the capab
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