Learning outcomes By the end of this unit you should be able to: describe and use safely eBay and Amazon; describe some of the technologies that underpin online shopping and auctions; confidently approach new tasks involving online shopping and auctions.
2.4 Comparing early sources of news
Taylor compares the merits of radio and newsreels, as sources of news, with those of newspapers. 4.3.2 Plagiarism
Attempting to pass off someone else's work as your own is plagiarism.
You may be encouraged to use the Web as a resource for writing assignments. This does not mean you should copy chunks of text from other websites however. You can quote from other sites, but such quotes should always be acknowledged. You should write material in your own words, to demonstrate that you have understood it, rather than simply copying it. Using search engines it is relatively easy for markers to 1.6 Alternative ways to take notes Some people prefer to take notes in a non-linear way and to be able to visualise the connections between different ideas. Spray diagrams, mind maps, spider diagrams and concept maps are all ways in which to present ideas or information in a diagram rather than as text. They are essentially the same in terms of the structure, but are used for different functions. Mind maps and concept maps are used when developing your own ideas on a subject, for example when planning a report or 2.1 Networked devices you use every day The next activity aims to get you thinking a bit more about how ICT systems form part of your own life and to make you more aware of how you are living in a networked world. ICT systems are embedded in many everyday experiences and we have become so used to this that we hardly notice that we are using them. 5.1 Domain, specification and design modelling Building quality software is often a complex and lengthy task. Software developers build models that represent what is important, devoid of unnecessary detail. These models help them to deal with the complexity and to understand what is being developed. This is not unlike other forms of design. For instance, when an architect develops model of a house as a set of drawings they will probably show where the walls and windows are and their relative sizes, but not any details about t 3 The Unified Process The Unified Process (UP) (Jacobson et al., 1999) has emerged as a popular iterative and incremental development process for building enterprise systems based on an object-oriented approach. It promotes a set of best practices, namely that development should be organised in short time-boxed iterations, and that it should be adaptive to accommodate inevitable change.
Time boxing means that a (usually) short fixed period of time is devoted to each iteration, e.g. three to fo 1. Introducing the terminology Constructing enterprise systems is a complex engineering endeavour. As with other types of engineering, e.g. the construction of aircraft or suspension bridges, a lot of effort has to be put into planning and modelling, so that the final product is what is required and is achieved on time and within budget. Ben Kovitz (1999) makes a distinction between orderly and exploratory. Orderly engineering is characterised primarily by the application and slight variation of time-tested te 8.3 Entities Here is the definition of an entity. An entity represents a thing that has meaning in a given context and about which there is a need to record data. A data model is not concerned with the individual entities. Instead, it describes particular types of entity. For example, all students are represented by the same types of data (student identifier, name, whether or not registere 7.1 Activity diagrams Each use case in a requirements model represents a unit of functionality or, more simply, a task initiated by an actor. Within each task there may be a number of identifiable actions that the software system should perform in order to complete that task successfully. In addition, it is necessary to identify what an actor does in unusual circumstances. To model these aspects of a system you can use activity diagrams. In the UML, an activity diagram is used to model the coordinatio 4.3 A commercial implementation In order to conclude this section I shall describe a commercial implementation of an object bus. It has been developed by a company known as SoftWired Ltd and is known as iBus. It is based on TCP/IP rather than UDP. The facilities offered by the iBus API provide developers with the facilities to construct objects which can subscribe to channels and to transmit any Java object to a channel. The code for a transmitter is shown below; the import statements are not shown. In Learning outcomes After studying this unit you should be able to: describe some of the architectural and programming paradigms used in distributed system development; describe message passing and the role of protocols within a message passing paradigm; introduce the concept of a distributed object; describe how event-based architectures are used within distributed system development; introduce one implementation of an event-based archite Top 25 Japanese Questions You Need to Know #24 - Have you been to Tokyo? in Japanese Snow White, Part 2 of 3 6.2.2 Database servers To be able to search a website like Lakeland's requires not only a web server but a database server. Like a web server, a database server is a computer that responds to requests from other computers. Its task is to find and extract data from a database. The web and database servers form part of a distributed system. This means that separate computers exchange data and information across a network (in this case the internet) to produce results for a user. For 5.1.1 What is DNA? DNA (deoxyribonucleic acid) is frequently in the news for four main reasons. DNA can be used in crime detection to eliminate innocent suspects from enquiries or, conversely, to identify with a very high degree of probability the guilty. DNA is now used in medicine to detect the possibility that diseases having a genetic origin may occur in an individual. This enables doctors to prescribe preventative treatments. It is Acknowledgements The content acknowledged below is Proprietary (see terms and conditions) and is used under licence. Unit image: Courtesy of banlon1964 Flickr [accessed 27 October 2006] All other material within this unit originated at the Open University 1. Join the 200,000 students currently studying with The Open University. 3.2 Stage 1: Finding out about the exam paper As a first step, it is a good idea to find out as much as you can about the exam paper for your course. Find out how your exam paper is set out, the way the questions are organised, and what weight each question carries in terms of marks. Different papers adopt different formats. Some require multiple-choice answers. Others ask for essay or short paragraph answers. Some require technical or numerical answers. Reading the instructions on the exam paper is particularly important, as the followi 1 The experience of reading The best way to develop your understanding of the reading process is to follow the principles of the Kolb learning cycle, by doing some reading and then reflecting on your experience. To this end, Activity 1 asks you to read an extract from an article by Richard Layard (2003) titled ‘The secrets of happiness’ which appeared in the New Statesman. To keep the task manageable I have reduced the article to half its original length and, for ease of reference, paragraph num 8.3 Academic arguments You have looked at some examples of everyday arguments, now look at a short example of an academic argument. Read the argument below. Compare and contrast it to the previous examples of arguments you have looked at ('W
Radio and newsreels
Author(s):
Learn Japanese with JapanesePod101.com! Another day, another train delay in Japan. As you wait on the platform, you strike up a Japanese conversation with a fellow passenger. He has a lot of interesting travel stories—this day suddenly got much better!
In this lesson, you will learn the question Have you been to Tokyo? in Japanese and [...]
Second part of the Disney-like animated cartoon fairy tale, Snow White and the Seven Dwarves,  from Grimm Brothers' collection. The Dwarves find her in their home and she tells them why she is there; her stepmother tried to have her killed.  The good news is, a prince is looking for her! She takes a bite from the poisoned apple. Good quality picture with voices, music, sound effects can be enjoyed by all ages.  (10:00)
Activity 25
