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4.7 Summary

Water in its 'natural' state supports a complex, yet fragile, ecosystem. The ability of natural watercourses to sustain aquatic life depends on a variety of physical, chemical and biological conditions. Biodegradable compounds, nutrients and dissolved oxygen must be available for the metabolic activities of the algae, fungi, bacteria and protozoa which are at the lowest level of the food chain. In addition, plant and animal growth cannot occur outside narrow ranges of temperature and pH. Susp
Author(s): The Open University

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4.6 Tidal rivers and estuaries

Most of the major cities and harbours in the world are located on estuaries. The estuarine ecosystem is a unique intermediate between the sea, the land and fresh water.

A rather precise definition of an estuary is 'a semi-enclosed coastal body of water, which has a free connection with the open sea, and within which sea water is measurably diluted with fresh water derived from land drainage'. This excludes large bays with little or no freshwater flow, and large brackish seas and inland
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2.8 Surface run-off

In some inland drainage areas, all water is removed by evaporation and infiltration. However, precipitation not penetrating the land surface usually runs off the surface along defined channels which have been produced by geological processes, previous storms, or possibly by people. This accelerates the process. Its eventual destination is the ocean, except, of course, where it runs to inland seas such as the Dead Sea. It is in the runoff phase of the cycle that physical intervention by humans
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Inuit Throat Singing
In many cultures, song is perhaps one of the most important traditions. What is extraordinary about the Inuit musical tradition is the way they create their songs - with notes originating from their throats. The song isn't interrupted even when a breath has to be taken. The 6 tracks in this album focus on Tanya Tagaq, who describes the amazing art of throat singing and how her heritage and culture, carried in her heart forever, has driven her to continue with this unique tradition. This mater
Author(s): The iTunes U team

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References

Section 1
Barker, E. et al. (1999) The Changing Status of the Artist, New Haven and London, Yale University Press in association with The Open University.
Hibbard, H. (1983) Caravaggio, London, Thames and Hudson.
Kant, I. (1987) Critique of Judgment (trans. W.S. Pluhar), Indianapolis, Hackett.

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2.6 Houses at Carthage, Bulla Regia and Thugga

Your next activity is to watch a video on houses of the Roman élite. The video presents houses from different parts of the empire.

Houses of the Roman élite (part 1 (Intro); 2 minutes)

Chartered teachers in Scotland
Teachers often have little spare time to reflect on the day's lessons and challenges. However, this evaluation of teaching and learning experiences is vital to their professional development. This free course, Chartered teachers in Scotland, is an extract from the OU's Chartered Teacher Programme for Scotland and will help teachers to evaluate their practice and development opportunities.Author(s): Creator not set

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Introduction

The underlying premise of this course is that we are all experts in different ways, and that our different experiences and understandings are of value. Inclusive education is presented and discussed as under construction, both in educational settings and as a concept. The materials to be found in this course are largely rooted in the social model of disability and human/disability rights frameworks.

This OpenLearn course provides a sample of Level 2 study in Author(s): The Open University

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3.1 Introduction

The binding of features emerges as being a very significant process when displays are brief, because there is so little time in which to unite them. With normal viewing, such as when you examine the letters and words on this page, it is not obvious to introspection that binding is taking place. However, if, as explained above, it is a necessary precursor to conscious awareness, the process must also occur when we examine long-lived visual displays. Researchers have attempted to demonstrate th
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2.6 Summary of Section 2

The results of the visual attention experiments we have considered can be interpreted as follows.

  • Attention can be directed selectively towards different areas of the visual field, without the need to re-focus.

  • The inability to report much detail from brief, masked visual displays appears to be linked to the need to assemble the various information components.

  • The visual information is captured in parallel, but assemb
    Author(s): The Open University

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1.6.1 Introduction

The process of keeping up-to-date in your chosen subject area is useful for your studies and afterwards, for your own personal satisfaction, or perhaps in your career as part of your continuing professional development.

There are a great many tools available that make it quite easy to keep yourself up to date. You can set them up so that the information comes to you, rather than you having to go out on the web looking for it. Over the next few pages, you will be experimenting with some
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Zimmerman blames Obama in video
Subscribe: http://smarturl.it/reuterssubscribe George Zimmerman, acquitted of murder charges in the shooting death of Trayvon Martin, blames President Obama for stoking racial tensions in the case. Rough Cut (no reporter narration). Subscribe: http://smarturl.it/reuterssubscribe More 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 topi
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Advice for Becoming an ‘Engaged Leader’
In bestselling author Charlene Li’s new book, she challenges leaders to use social technologies to connect with their customers and employees.
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The Danger of Being Alexander
Leaders may find it tempting to wage ambitious crusades for personal reward, but eventually their troops can turn on them. Collaboration, often missed, can be a viable and sustainable alternative.
Author(s): Venugopal Gupta, Founder, The Business Parables (I

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Harvard Food+ Research Symposium: Walter Willett
Walter Willett, Professor of Epidemiology and Nutrition at the Harvard School of Public Health The Harvard Research Symposium on the Nexus of Food, Agriculture, Environment, Health, and Society (Food+ Symposium) featured twenty-two Harvard faculty members from eight schools and a dozen departments giving seven minute "speed presentations" on their current Food+ research. The goal of the Food+ Research Symposium was to provide attendees with a sense of the excitement and breadth of the Food+
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Harvard Food+ Research Symposium: Joyce Chaplin
Joyce Chaplin, Professor of Early American History at the Department of History in the Harvard Faculty of Arts and Sciences The Harvard Research Symposium on the Nexus of Food, Agriculture, Environment, Health, and Society (Food+ Symposium) featured twenty-two Harvard faculty members from eight schools and a dozen departments giving seven minute "speed presentations" on their current Food+ research. The goal of the Food+ Research Symposium was to provide attendees with a sense of the excitem
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Keynote Address: Dr. Peter Slavin
Keynote Address: Dr. Peter Slavin, President of Massachusetts General Hospital
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Steve Lohr, "Data-ism"
Steve Lohr, a technology reporter for the New York Times, chronicles the rise of Big Data, addressing cutting-edge business strategies and examining the dark side of a data-driven world. Coal, iron ore, and oil were the key productive assets that fueled the Industrial Revolution. Today, Data is the vital raw material of the information economy. The explosive abundance of this digital asset, more than doubling every two years, is creating a new world of opportunity and challenge. Data-ism is ab
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GLS 2010 panel highlights 3: The future of work
Lynda Gratton, Warren East, Andy Green, Jasmine Whitbread and Rakesh Bhasin discuss the five key factors that will influence the way we work - technology, demographics, social trends, carbon and globalisation

Dambisa Moyo on Innovating Away from Aid
In her best-selling book, Dead Aid, economist Dambisa Moyo, argues that aid to Africa breeds corruption and dependence and should be replaced with more innovative ways of financing, including capital markets and microfinance. Her lecture, Innovating Away from Aid, was delivered at the University of Waterloo.
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