An Introduction to Waves
A detailed introduction to waves including transverse and longitudinal, showing what happens when reflected and superimposed is given in this video.   High speed photography and animation are used to show examples.  ( 10:49)
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Sowing of soyabean variety 9560

This video explains the method of sowing soybean variety 9560
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2012 April 12 - Part 3

Prof. Adams exploits rotational symmetries to better describe the angular momentum ladder and gives a teaser of the implications arising from the angular momentum of a particle taking on a non-integer (specifically half-integer) value.


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Colloids II
By: icamvid Paul Chaikin gives a series of lectures at the Boulder Condensed Matter Physics summer school 2012 about colloids.
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Profile: Peter Ayliffe, President and CEO, Visa Europe
Peter Ayliffe, CEO and President of Visa Europe speaks about his role, looks to the future for Visa Europe and their involvement in the Olympics and Paralympics.

Oh My Soul Interviews: Kant (Episode 3) - Audio
Professor Grant Gillett presents his play, "The soul and things themselves - being conscious is being in it"
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Real Vs. Irrational Numbers
This presenter explains the difference versus rational and irrational numbers.  She first explains that both are real numbers and proceeds to give examples of rational and irrational numbers.  (02:12)
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Performance tips for Windows Store apps using XAML | Build 2012

Extensible Application Markup Language (XAML) offers a wealth of features that enable developers and designers to build more and more amazing and complex apps. But with great power comes great responsibility. Come learn the tricks to keeping your XAML-based Windows Store apps smooth and responsive, and find out about tools to light your way if you should find yourself in the dark!

Author(s): Kiran Kumar

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On Being Progressive [Audio]
Speaker(s): Maurice Fraser, Polly Toynbee | ‘Progressive’ is a slippery term. Right (i.e. Left) - thinking people use it with casual abandon, to confer moral approval on a set of values which they regard as uncontroversial. But on close examination the meaning of the term appears contingent, historically-specific and eminently contestable. Who is to say what is ‘progressive’? Is it time to rescue it from political correctness? And can the Right lay at least as compelling a claim to it as
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Green toilet saves water, feeds garden
Nov. 21 - In the western world, thousands of gallons of water are flushed down the toilet every year - valuable water that could otherwise be used for drinking or growing food. But a Canadian company is trying to minimize that waste by producing waterless, composting lavatories that not only save water, but also producer fertilizer for the garden. Tara Cleary reports.
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1 Capturing sound

Have you ever listened carefully to a recording of your own voice?

In this first activity, I want you to make a short recording of your voice.

Activity 1 (Optional)

Note: This optional activity requires the use of a
Author(s): The Open University

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1.4 Analysis

Data analysis begins with the statement of data requirements and then produces a conceptual data model. The aim of analysis is to obtain a detailed description of the data that will suit user requirements so that both high and low level properties of data and their use are dealt with. These include properties such as the possible range of values that can be permitted for attributes such as, in the Open University example for instance, the course code, course title and credit points.
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1.1.1 Desirable properties of a database

As you will see, there are many possible choices that can be made during the design and many rules to guide this work. When trying to decide if some choices are better than others, you need to consider the key desirable properties of a database. The table here outlines some of them:

Completeness Ensures that users can access the data they want.
Author(s): The Open University

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Learning outcomes

Having completed your study of this unit you will:

  • be able to describe the key points of the waterfall model applied to database development;

  • appreciate the roles of various development artefacts, such as the data requirements document, conceptual data model and such like used to communicate between activities in the database development life cycle;

  • be able to communicate effectively about aspects of the development of databases.


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Acknowledgements

Grateful acknowledgement is made to the following sources for permission to reproduce material within this product.

Figure 1 The National Gallery, London;

Figure 3 NOAA-AVHRR image provided courtesy of the Canada Centre for Remote Sensing, Natural Resources Canada;

Figure 4(a) Map extract produced by FWT and reproduced with the kind permission of the Association of Train Operating Companies;

Figure 4(b) Reproduced from multimap.com. Ordnance Survey map with permission
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Wealth Strategies: 2012 1st in multi-year housing recovery
Dec. 19 - Fitch's Bob Curran expects continued stabilization in the housing market in 2013 and feels companies like D.R. Horton, Meritage and Standard Pacific are best poised to see upgrades.
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Computer Renderings ? ?Reality is Overrated?
In this paper, two problems concerning truthfulness of computer-generated visualization are considered. The first one concerns relationships between reality and its representation by computer renderings. The second problem concerns the kind of representations people need. These problems are analyzed for static perception of architectural forms based on computer visualization, and for dynamic walk-through perception of urban space. The thesis of the paper is that many photorealistic renderings ar
Author(s): Asanowicz, Alexander

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041 Special Exhibition: Michelangelo's First Painting
Keith Christiansen, the Jayne Wrightsman Curator of European Paintings, and Michael Gallagher, Conservator in Charge of Paintings Conservation, discuss their research and conservation of the first known painting by Michelangelo Buonarroti (Florence 1475–Rome 1564), believed to have been created when he was twelve or thirteen years old. Recently acquired by the Kimbell Art Museum, the painting The Torment of Saint Anthony has undergone conservation and technical examination at the Metrop
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The role of animated pedagogical agents in scenario-based language e-learning: a case-study
Scenario-based language e-learning (SBeL) is focused on contextual learning, since it uses authentic activities that can improve communication skills. This paper reports a case-study that proposes the use of animated pedagogical agents (APAs) in a Brazilian Portuguese web-based course built under a mix of task- and scenario-based approaches. Its main purpose is to discuss how APAs can be used to improve students’ communicative skills, cultural awareness and level of interaction with course’s c
Author(s): Reategui Eliseo,Polonia Eunice,Roland Letícia

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Perceptions of Assessment
Dave Harris and Helen Bowstead
Xerte. This one discusses some work on student and staff perceptions of assesment and grading. we used a 'talk-aloud' technique to get students and colleagues talking as they worked through writing and grading (respectively) assignments of various kinds. There are six short extracts from the recordings. Voices have been distorted to preserve anonymity. As you might expect, students and staff have quite different perceptions of what is required!

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