Introduction This unit is the first in the DD208 series of three units that will help you to develop your skills for learning from audio visual material.It is adapted from the course Welfare, crime and society
.You will be looking at the theme of surveillance as a multifacted, everyday practice. It is really important to bear in mind that the video clips are less concerned with surveillance in its
2.1 Background and historical overview As we saw in Section 1, everyday talk, public discourse and political debates sometimes treat the concepts of ‘welfare’ and ‘work’ as separate spheres of activity, or even binary opposites: welfare or work. This can occur in different ways, for example: an explicit connection
Acknowledgements The content acknowledged below is Proprietary (see terms and conditions).This content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence This extract is taken from D315: Crime, order and social control, produced by the BBC on behalf of the Open University. © 2007
7.3.1 Finding the 2's complement In Section 2.4 you saw how to find the 2's complement representation of any given positive or negative denary integer, but it is also useful to be able to find the additive inverse of a 2's complement integer without going into and out of denary. For instance, 1111 1100 (−4) is the additive inverse, or 2's complement, of 0000 0100 (+4), but how does one find the additive inverse without converting both binary integers to their denary equivalents? The answer is that the additive inve
2.1 Introduction
Study note: You may like to click on the link below to the Numeracy Resource as you study Section 2. It offers additional explanations and extra practice on some of the topics, and you may find this useful. Click on the 'View document' link below to open the Numeracy Resource.
16.2.1 Receiving data In a supermarket ICT system, there needs to be some way for the computer to receive information about the items a customer is buying. Think back to a recent visit to your local supermarket and how you ma 14.1 Introduction Now that I have introduced you to the processes carried out by a stand-alone computer, I will move on to discuss what happens when computers are linked. 11.6 Operating systems A computer requires software just to look after itself and to manage all its components; this is called the operating system. The operating system handles communication with the other software on the computer and with the hardware resources of the machine, such as the processor and memory. The operating system provides a means of running the computer's application programs. It also provides a standard user interface with windows, buttons and menus so that users can interact with the co 10.2 Ports On the outside of a computer you will see a number of connection points that look like sockets. These sockets are known as ports and they provide connections between the computer and external devices such as a digital camera or printer. Ports control the flow of data between the computer and these devices, ensuring that data is sent and received quickly and reliably. Modern ICT devices require increasingly large amounts of data to be sent between the computer and the devices. The 6.3 The architecture The architecture of the system is shown in Figure 4. It consists of a number of components. The most important of these is the web server. This communicates with browsers used by customers. There are two other computers that are used in the system which are directly connected to the web server: a mail server which sends and receives mail from customers and a mailing list server which administers the mailing lists of customers and their interests. Both these servers communicate with the 6.1 The architecture of a typical e-commerce system Before finishing this unit it is worth looking at the architecture of a typical e-commerce system in order to see some of the technologies. This is followed by details of a real application which I shall use to discuss some of the issues involved in distributed system development. The description used is closely modelled on the Amazon site. 2.4.5 Reflecting on communication skills Communication can be approached in terms of the skills needed to get a hoped-for response. By seeing communication in terms of skills, it is easier to focus on what skills you already have and use. Once you have a reasonably clear picture about this, it is much easier to see where you might want to act to increase your communication strengths and decrease any weaknesses. It can be useful to try assessing what you see as someone else’s communication skills before you think about your o 1.1.9 Managing files Another important skill when working electronically is being able to find files that you saved on your computer's hard disk. Here are some tips for overcoming problems with file management: Give your files meaningful names: ‘notes on studying online.doc’ rather than ‘notes.doc' Use folders to organise your files. For example, I created the following folders for this unit. In My Documents I created a folder 8.1.1 Achieving a good polish Here is a list of indicators you can use to judge your polishing techniques. Most guidance notes given to students include these points, but they are not always followed. 6.2 Turning the spotlight on your work Having established some general principles, try now to subject your own work to the same scrutiny. Take one of your most recent essays or reports and ask yourself, ‘What does it look like?’ That is, describe its physi 5.2.2 Opening up ideas: analysing the question What do you need to know about your assignment? Most importantly, what it's about (i.e. the topic). Once you have worked this out, you are in a better position to gauge how much you already know and how much you will need to find out. 5.2.1 When to look at the question At what stage do you look at the title of your next assignment? Note down what you think are the advantages and disadvantages of looking at the title before and after starting to work through the relevant section of your c 1 Good practice in writing This unit is a general guide and will introduce you to the principles of good practice that can be applied to all writing. If you work on developing these, you will have strong basic (or ‘core’) skills to apply in any writing situation. For assistance with specific aspects of any course you are to study, always refer to any guidance notes or handbooks that have been provided. This unit won't solve all your difficulties immediately; developing your writing skills is an ongoing proces 8.4 Carrying out research During this stage you get down to the business of analysing and interpreting the meanings of all your primary and secondary source material (documents, reports, newspaper accounts, books and articles), in the ways outlined in the previous sections of this unit. As you do so you will be making notes towards your project report. In this connection, it is very important to write down full references for all the material you use as you read each item. Then you can easily find partic 8.3 Planning your enquiry I am grateful to Tony Coulson, Liaison Librarian (Arts) at The Open University, for his help with this section; also to Magnus John, Information Services Manager, International Centre for Distance Learning. At this stage, you will be deciding what methods of enquiry to use and the scale of investigation to attempt. Will examining company papers, government reports and newspapers provide enough of the right kind of information? Or, since independent broadcasting comp
Activity 13 (exploratory)
Positive indicators
Negative indicators
It is word-processed or clearly and neatly hand-written.
The assignment is written on paper t
Activity 14
Activity 9
Activity 8
