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Optical Communication Systems
This course is a brief introduction to optical communication systems. These systems are described, focusing on lasers, photodetectors, fibers, and design budgets. The aim is qualifying students to design simple optical systems.
Author(s): Miguel Angel del Casar Tenorio,José María Rodrí

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Copyright 2009, by the Contributing Authors

2.1 Planning your search

Your approach to searching will depend to a great extent on what kind of person you are. In an ideal world, when searching for information for a specific purpose, we would all find what exactly we were looking for at the first attempt, especially if we are in a hurry. However, it's always a good idea to have some kind of plan when you are searching for information, if only to help you plan your time and make sure you find the information you need. If I was starting to search for material on h
Author(s): The Open University

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Prof Gemma Calvert
Professor Calvert's introduction to the subject of the Neuromarketing 2008 conference.
Author(s): No creator set

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Where next for public health in the era of austerity?
This event was the second in a series of master class lectures jointly staged by the University of Leeds and Leeds Metropolitan University bringing together relevant senior figures and academics from across the city and surrounding region. The twenty-first century has seen a growth in political, environmental and economic insecurity in the context of global recession, population ageing and climate change. Responding to these threats involves rethinking how we work together, care for ourselves,
Author(s): Professor Paul Johnstone,Leeds Metropolitan Univer

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Mapping Wasps and Their Plant Hosts in Australia
Invertebrate Zoology Division Chair and Curator James Carpenter joins Dennis Stevenson of the New York Botanical Garden on an expedition to Australia in search of pollen wasps, their host plants, and the ways they might be adapted to each other. Along the way, they discover a new pollen wasp species, Paragia ozoe, and a plant family, Proteaceae, previously unknown to host wasp pollinators. The rare teaming of zoologist and botanist underscores the value of interdisciplinary collaboration and of
Author(s): No creator set

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Virtual Maths - 2D Shapes, elipse
Interactive simulation demonstrating formula and calculation of area of an elipse
Author(s): Leeds Metropolitan University

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How To Teach Literature
This video lesson describes the basics of teaching literature and how to make it fun to teach, for the student and for the teacher as well. It is very basic and does not offer many specific examples. The video is in lecture format with an instructor standing in front of a dry erase board.  (02:29)
Author(s): No creator set

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About Spelling Rules
A teacher shows how to improve spelling skills by learning spelling rules, but remember that many rules have exceptions.  Basic spelling rules include putting "I" before "E" except after "C," doubling the final consonant in words where the last syllable is stressed and proceeded by a single vowel, and dropping the final "E" when adding a suffix to a word. (03:21)

Author(s): No creator set

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Conclusion

Earthquakes shake the ground surface, can cause buildings to collapse, disrupt transport and services, and can cause fires. They can trigger landslides and tsunami.

Earthquakes occur mainly as a result of plate tectonics, which involves blocks of the Earth moving about the Earth's surface. The blocks of rock move past each other along a fault. Smaller earthquakes, called foreshocks, may precede the main earthquake, and aftershocks may occur after the main earthquake. Earthquakes are mai
Author(s): The Open University

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TALAT Lecture 3208: The Finishing of Castings
This lecture provides an introduction to some of the finer points in the production of high quality castings. The students will be able to understand the various processes for sealing porosity in badly made castings and to appreciate factors influencing the accuracy of castings, including a basic understanding of how to control and measure casting dimensions. Basic understanding of the foundry industry is assumed.
Author(s): TALAT,John Campbell, Interdisciplinary Research Ce

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Learning outcomes

After studying this course, you should be able to:

  • demonstrate an awareness of different ways in which our use of technology can affect the environment

  • demonstrate a set of skills in reading and interpreting texts and diagrams containing some technical descriptions.


Author(s): The Open University

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TALAT Lecture 4300: Beam Welding Processes of Aluminium
This lecture gives a brief introduction to beam welding and cutting techniques of aluminium; it describes the process principle of electron and laser beam welding and cutting of aluminium; it gives some information about the choice of welding and cutting parameters; it also gives information about the weldability of aluminium alloys with electron beam welding. General mechanical engineering background and basic knowledge of electron and laser beam physics is assumed.
Author(s): TALAT,Ulrich Krüger, Schweißtechnische Lehr-und

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Fundamentals of Materials Science: Diffusion
This set of animations provides an introduction to the mechanisms and driving forces of diffusion. It demonstartes some of the processes in which it is observed. From TLP: Diffusion
Author(s): DoITPoMS, University of Cambridge,Emily Weal, Univ

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Study Tips On How to Study Spelling
In order to study spelling for a spelling test or for general
knowledge, it can be helpful to read books about commonly misspelled words. The tutor in this video gives several tip on how to study for a spelling test and he explains how to use reference books when studying spelling. (02:09)

Author(s): No creator set

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3.9 Choosing the right tool for the job

Before searching it is always a good idea to check what the source you have chosen covers to make sure it will unearth information that matches your search need (you will notice that all the resources we've covered in this guide have short descriptions to enable you to decide which to use). Some of the decision makers, depending on the context of your search might be:

  • Does it have full text?

  • Does it cover the right subject?

  • <
    Author(s): The Open University

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9 A stand-alone computer

The computer you are using for your studies is called a personal computer or PC. Although you have an internet connection for use in this course, your computer can probably also be used as a stand-alone computer. Your PC may be a desktop computer or a notebook computer (sometimes known as a laptop computer). Usually a desktop computer comes with separate devices such as a monitor, a keyboard, a mouse and speakers and it runs on mains electricity. Notebook computers
Author(s): The Open University

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1.4.3 A price index for the shopping basket

In the audio session, two methods of constructing a price index for bread were described. They were called the ‘previous year’ method and the ‘base year’ method. In both cases, the value of the index in the base year is 100. So, for the base year method,


Author(s): The Open University

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7 Conclusion

One might think of the different interpretations of internationally recognised notions of rights and justice as running along a spectrum, from which we shall now identify four different positions.

  • The first interpretation would argue that, overall, the extension of rights to the international sphere has been benign and effective. It has led and will lead to further successful claims for justice.

Evidence for the development of a globa
Author(s): The Open University

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1 Introduction

Designed products surround us all and range from bus tickets to buildings. One of the primary considerations in all fields of design is ‘usability’ and, increasingly, the phenomenon of ‘user-centred design’. This can focus on physical attributes of products but increasingly it depends on an understanding of our cognitive abilities required to operate even simple products. All people studying this unit will have some experience of designs that are not usable (perhaps mobile phones or c
Author(s): The Open University

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1.2 Expressing ratios

To make short crust pastry, one recipe book says ‘use one part of fat to two parts of flour’; another recipe says ‘use fat and flour in the ratio of one to two’; and yet another says ‘use half as much fat as flour’. These are different ways of expressing the same ratio. Ratios are often expressed as fractions. So in this case:

Author(s): The Open University

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