4.4.2 Battery parameters Now that we have covered some background on electricity, I will return to discussing batteries. What do you think would be the important characteristics of a battery for a portable ICT device such as a camcorder or a Introduction This unit is from our archive and it is an adapted extract from Networked living: exploring information and communication technologies (T175) which is no longer in presentation. If you wish to study formally at The Open University, you may wish to explore the courses we offer in this curriculum area. This unit looks at the technologies used to acquire information about 4.3 Ethical and legal considerations You will need to be aware of privacy and confidentiality in relation to online communication. Email is generally considered private and should not be quoted without permission. Some conferences are not wholly public, so messages should not be copied outside the conference. Online discussion may be read by people from other cultures and backgrounds, so be careful to avoid giving offence. Although people are usually very tolerant, it is still possible that someone could sue for libel. 4.2.4 Make clear your perspective Try to avoid speaking impersonally: ‘This is the way it is…’, ‘It is a fact that…’. That will sound dogmatic and leaves no room for anyone else's perspective. Why not start, ‘I think…’? A common abbreviation is IMHO (in my humble opinion) – or even IMNSHO (in my not so humble opinion). If you are presenting someone else's views, say so, perhaps by a quote and acknowledgement. 2.2 Evaluating web resources One of the good things about the Web is also one of its drawbacks – anybody can publish anything. This means that the Web is an amasing source of information and is full of fascinating resources. However, in order to get to useful information you may have to work your way through lots of irrelevant material. Even when you think you have found something relevant, how do you know it is reliable, and how can you judge the quality, accuracy and bias of what you find? Most publicatio References 6.6 Modelling the relationships between use cases There are two situations when you would consider adding details to a use case diagram: to identify a common task (and its associated scenarios) that is shared between two or more use cases; to record any alternatives or additions to the main success scenario as separate use cases. In both situations, the new tasks are shown as new use cases (ovals) and, as you will see below, the UML provides a suitable notation (known as 6.4 Scenarios The purpose of a use case is to meet the goal of its associated actor(s), such as a guest making a reservation with a hotel. This implies that a use case should include everything that must be done to meet that goal. For example, if it is necessary to check the availability of rooms in the hotel for the desired length of stay before accepting a reservation, then we expect the use case to contain that check. In general, a use case contains a narrative about the flow of events that specifies a 7.2.1 E-shop This is the most ubiquitous form of commerce on the World Wide Web. It involves a company presenting a catalogue of its wares to internet users and providing facilities whereby such customers can purchase these products. Almost invariably such a site will contain facilities for ordering and paying for products by means of credit cards. The sophistication of sites described by this business model range from just the simple presentation of a static catalogue to the presentation of an interactiv 1.6.3 Supporting users and user processes Use of a database involves user processes (either application programs or database tools) which must be developed outside of the database development. In terms of the three-schema architecture we now need to address the development of the external schema. This will define the data accessible to each user process or group of user processes. In reality, most DBMSs, and SQL itself, do not have many facilities to support the explicit definition of the external schema. However, by using built-in q 1.3 Summary This section briefly discussed the public awareness of computers and how quickly this has developed from a situation where computers hardly impacted on most people to one where they are involved in virtually every facet of modern life. As an illustration, you examined the contents of your wallet to determine how much data about you (your persona) might be kept by a variety of organisations. This sets the scene for developing an understanding of how this affects you as an individual in modern Exploring childrens' learning Working with young people in sport and exercise Geometry 7 Logarithms The equation 23 = 8 means that 3 is the index of the power to which we raise the number 2 to produce 8. A logarithm is an index, and in this example, 3 is the logarithm of 8 to the base 2. We write this as Log2 8 = 3 These two equations are identical: 23 = 8 and log2 8 = 3 They express the same fact in the language of logarithms. 4.1.1 Getting off to a good start You may find it useful to plan the way you will start your exam. Having a routine can be calming when under pressure. This is from a student who recommends a checklist:
I have a mental checklist of what I need to do once I've turned over the paper. I do this because I used to rush in and answer the fir 3.1.1 First find a place to revise Other than the obvious suggestions of having a warm, well-lit and comfortable place to work, we also suggest that you think about choosing a revision place where you can spread out your materials and leave them as they are, without having to pack anything away. This means that you can pick up and put down your revision whenever you find time to revise. This will help you to make the most of your revision time. On the other hand, you may find that you concentrate better away from the dis 9.1 Reflection and the four main phases of learning how to learn If your course encourages this approach to learning, or if you have read other material on learning how to learn, you may have come across the term 'reflection'. Maybe you have been encouraged to reflect on your learning or on your assignments. In this unit, we have deliberately not used the term until now. This is not because we think the term - or the process - is unimportant, but because it can seem vague and not particularly helpful to you as a learner. In fact, all the activities in this 1.2 What do we mean by learning how to learn? This activity will help you to explore what we mean by learning how to learn. Think back to an example of study you have done in the past, or any fairly structured learning opportunity you remember. Focus on a particular ac 4.4 Questioning what you read Another way to keep your mind active while you read is to ask yourself questions about what you are reading.
Activity 19
How does a child’s mind and behaviour change as they develop over time? In this unit four theories of child development are explored. Each theory views child development from a different perspective and all have underpinned psychological research for many years, and continue to do so today. By the end of this unit you will have a good understanding of each of the theories and will probably have begun to challenge your own assumptions about how your own children, or children you know, have deve
This unit examines the special considerations of coaching or instructing young people in sport and exercise. The physiological differences between children and adults will be considered along with the practical implications of coaching young people. First published on Wed, 23 May 2012 as Author(s):
Geometry is concerned with the various aspects of size, shape and space. In this unit, you will explore the concepts of angles, shapes, symmetry, area and volume through interactive activities. First published on Tue, 04 Dec 2012 as Geometry. To find out more visit The Open Un
Activity 1
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Michael Jackson, Software Requirements & Specifications, Addison-Wesley, 1995. ISBN 0–201–87712–0.
Suzanne Robertson and James Robertson, Mastering the Requirements Process, Addison-Wesley, second edition, 2006. ISBN 0–321–41949–9
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