The Final Cut
It is often said that a movie comes to life in the edit suite. Ben Harrex of Final Cut post production studios in London discusses five themes with examples; The Cut, The Dissolve, Cropping and Resizing, Titles and The Sound. Ben explains how the video editor has a huge amount of creative control over how the final product looks. This material forms part of The Open University course T215 Communication and information technologies.Author(s): The OpenLearn team

Propagators of ideologies use images and symbols to get people to believe and act in certain ways. Nationalism as a political ideology uses the idea of â€˜nationâ€™ to achieve political goals, and may be the most potent ideology in existence. It is worth reflecting for a moment on what kind of ideology it is. And it is worth reminding ourselves that ideology is a contested concept; a term that can mean different things. Marx and Engels subscribed to the notion of ideology as a set of ideas th
Author(s): The Open University

My final point in the preceding section brings home the fact that integer arithmetic is not really suitable when divisions are to be performed. It is also not suitable where some or all of the values involved in the arithmetic are not â€“ or are not necessarily â€“ integers, and this is often the case. In such cases, arithmetic has to be performed on non-integers.

The most common representation for non-integers is the floating-point representation that I mentioned briefly in Box 3. You
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Multiplication can be thought of as repeated addition. For instance, in denary arithmetic

7 Ã— 5

can be thought of as

7 + 7 + 7 + 7 + 7

There is therefore no need for a new process for the multiplication of binary integers; multiplication can be transformed into repeated addition.

In multiplication the result is very often much larger than either of the two integers being multiplied, and so a multiple-length representation may be needed to hold the result of a mu
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Just as a denary number system uses ten different digits (0, 1, 2, 3, â€¦ 9), a binary number system uses two (0, 1).

Once again the idea of positional notation is important. You have just seen that the weightings which apply to the digits in a denary number are the exponents of ten. With binary numbers, where only two digits are used, the weightings applied to the digits are exponents of two.

The rightmost bit is given the weighting of 2Â°, which is 1. The ne
Author(s): The Open University

A very straightforward way of finding binary codes to represent positive integers is simply to use the binary number that corresponds to each integer. This is because every positive integer in the everyday number system (known as the decimal or denary system because it uses 10 different digits) has a corresponding number in the binary number system.

As you will see later, in Section 7 of this course, just as arithmetic (addition, subtraction, etc.) can be performed on everyday denary nu
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A computer is designed to do the following things:

• receive data from the outside world;

• store that data;

• manipulate that data, probably creating and storing more data while doing so;

• present data back to the outside world.

In the next few sections I am going to examine in more detail the data that a computer receives, stores, manipulates and presents. I
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A CD-ROM (Compact Disk Read Only Memory) uses a laser-based optical form of storage. This type of disk has been used for many years to distribute music and computer software. A CD-ROM drive is needed to read the disks. Data is locked into the disk during manufacture, and cannot afterwards be changed.

There are two other types of CD device for computers: CD-R (CD-recordable) and CD-RW (CD-rewritable). With the right sort of CD drive in your computer, you can 'burn' data (that is,
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The network is a communication channel in that it conveys data from the transmitter to the receiver. The network may also manipulate data in some way, and it may also store or retrieve data.

In a mobile phone system, the network conveys the message from User l's handset to User 2's. It will also store the identity of User 1 and the duration of the call. This data is used to work out the amount to charge User 1, which is a form of manipulation of data. A network can be very comple
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The diagram in Figure 6 shows that, for communication to take place, there needs to be some means of conveying the message between the sender and the recipient. I am now going to look at the essential components of 'means of conveying a message'. In other words, I shall treat 'means of conveying a message' as a system and look at
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Music in UIs is relatively undeveloped, except in games and specialist packages designed for composers and musicians.

Some operating systems have a signature tune that is played automatically when they are loaded. This informs the user that the operating system has loaded correctly and creates a sense of identity, but can be annoying for the user if they have to listen to it repeatedly. A development on this use might be to signpost different parts of the program using musical clips.
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The use of sound is becoming increasingly common, particularly for the following types of application.

• Applications where the eyes and attention are required away from the screen. Relevant examples include flight decks, medical applications, industrial machinery and transport. If you are a runner, you may have a heart rate monitor that allows you to monitor how fast your heart is beating. This is often indicated by an auditory beep, which speeds
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Liz Bennett and Jon Rosewell

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The versatile tiny transistor is now at the heart of the electronics industry. In the video clips you have seen the history of the incredible shrinking chip, its Scottish connections, and an explanation of the physics that make chips work as well as a reconstruction of making a transistor using the crude techniques of yesteryear.

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There are a large number of books that have been written on e-commerce, many of which are of varying quality. I have found three useful. The first is by Kalakota and Whinstone (1997). It is an excellent introduction to both the technologies and applications involved in electronic commerce. Kalakota has also written a book on electronic commerce which avoids many of the clichÃ©s and which concentrates on unglamorous areas such as supply chain automation (Kalak
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This free course provided an introduction to studying Education, Childhood & Youth qualifications. It took you through a series of exercises designed to develop your approach to study and learning at a distance and helped to improve your confidence as an independent learner.

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These are sites on the web which run conventional auctions. There are two types of auction: those that are carried out in real time, where participants log in to an auction site using a browser at a specified time and bid for an article until the highest price is reached and no other bids are forthcoming. The other type of site â€“ and the most common â€“ is where an item is offered for sale and a date advertised after which no more bids are accepted. Such sites make a profit from two sources
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After studying this course, you should be able to:

• detail what is meant by the term â€˜e-commerceâ€™

• examine some typical distributed applications

• detail some of the problems that are encountered when developing distributed applications

• describe briefly some of the technologies that are used to support distributed applications

• show how some of the technologies detailed in the course are used in concert to realise a typi
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This course draws attention to the value of a sociocultural understanding of spoken language in the processes of teaching and learning. It focuses upon how language can be used for persuasion, control and argument, and how dialogue can act as an aid to development. Along with some background reading and activities this course offers opportunities for the evaluation of some selected classroom talk.

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