1 Introductory advice There are two ways to approach this Introduction. The first is the more natural one: to read it straight through to get a general feel for its style and content, and to see whether you are going to find the unit and the issues it raises interesting; in short, to get an overview. There is nothing wrong with this at all. You will find as you read through it, though, that the Introduction covers a wide range of topics. In part this is because the unit authors takes a broad vi
8 Further reading For a wide-ranging, accessible and powerful defence of the idea of universal human rights and their role in the international system, see Chapters 1, 5, 6 and 7 of Beetham, D. (1999) Democracy and Human Rights, Cambridge, Polity Press. For a brilliant feminist discussion of the claims of culture and the claims of universal rights, set in a context of a range of concrete, contemporary examples, see Benhabib, S. (2002) The Claims of Culture: Equality and Diversity in the Global
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
3.2.3 Fighting on too many fronts Although I have dwelt on the agreements relating to agriculture, textiles, and intellectual property, there are some two dozen others, each involving intricate legal and technical details. These include agreements on: Sanitary and phytosanitary (SPS) measures: these are standards applied to imported agricultural products so as to protect plants, animals and humans in the importing country. However, these standards are often arbitrarily used to restric
3.5 Images Images can also be found online. Some useful image databases are: Module team Course team Andy Lane, author and course chair to December 1999 John Martin, author and course chair from January 2000 Amber Eves, course manager Laurence Newman, course manager Pat Shah, course secretary Susan Carr, author Eion Farmer, author and critical reader Jim Frederickson, author John Naughton, author Roger Spear, author Karen Shipp, senior software designer and author Ian Every, software manager Module team Dr Peter Lewis (Chair) Dr George Weidmann (Lecturer in Materials) Dr Bob Dyson (Senior Lecturer, University of North London) Richard Black (Microphotographer) Dr Keith Cavanagh (Editor) Dr Clive Fetter (Editor) Sarah Hofton (Designer) Caryl Hunter-Brown (Technology Librarian) Gordon Imlach (Technician) Mike Levers (Photographer) Laurence Newman (Course Manager) Jennifer Seabrook (Secretary) Ian Spratley (BBC)< Stage 7: Option testing (how well will each work?) While the identified objectives and constraints have been referred to constantly during the development stage, the testing stage of the approach is a more formal analysis of each option. Its objective is to determine whether: the option will meet the operational objectives it is technically feasible it is organisationally feasible it will meet the financial objectives. Stage 6: Developing the options (what would the options be like?) The objective here is to develop the routes to objectives generated in Stage 4 to the position where they could be implemented if the decision to go ahead were given. This involves doing sufficient work on each option for technical and other details to be defined, and for costs and benefits to be assessed, and for a sound decision to be taken, while at the same time minimising the time and resources devoted to the task. Stage 3: Identification of objectives and constraints (where would we like to be?) This stage forces the project team to make explicit the objectives and constraints associated with the problem or opportunity. This is valuable for several reasons. It forces everyone concerned to clarify what they hope to achieve. The need to agree objectives and constraints can bring into the open disagreements that otherwise might emerge only at a later stage of the approach. The process of defining, elaborating an Stage 1: Problem definition (what is the problem?) The aim of the first stage is to identify and describe the problem or opportunity. While each stage depends on the success of the previous stage, it is the initial stages of a project that set the direction for the work as a whole. For this reason a clear definition and firm agreement on the problem or opportunity are essential. Problems and opportunities are like two sides of a coin: one of them can always be formulated in terms of the other. The best way to distinguish between them is 3.1 Introduction As you would expect, since this unit deals with systems engineering, it embodies the principles and methods associated with a systems perspective. So it is important that you understand systems and the systems perspective at the beginning of the unit. To have engineered a system successfully, all its features – the technology, control systems, people and related aspects of the physical environment – have to contribute to the achievement of its objectives. In other words, it h 3.3 Optical amplifiers
Figure 22 shows in outline one possible structure for an Erbium-doped fibre amplifier (EDFA). 3.2 Directional couplers A simple yet valuable device is the directional coupler (Figure 19). A directional coupler can be constructed from two single-mode fibres by bringing them into close contact and heating so that the glass melts and the two fibres fuse. Light can then pass from one fibre to the ot 3.1 Introduction The basic optical-fibre link consisted of the source (laser or LED), the fibre and the detector, as was shown in Figure 1. Improvements in these components can increase the data rate, but the system is still a point-to-point transmission link and all signal processing, such as routeing 2.7 Cabling A distinction must be made between the optical fibre – a single strand of glass fibre – and the optical-fibre cable consisting of one or more strands of fibre and various protective coverings. Bare optical fibre is fragile and vulnerable, and the cabling must provide the properties given below.
Tensile strength: The cable should prevent the fibre being strained when the cable is under tension. When the cable is being laid, for exampl 6.3 Where is the complexity and what is it? When I reflect on my experiences of child-support, I attribute the properties of mess, complex, or hard-to-understand to the situation. So, are mess, complex, and hard-to-understand the same thing? If they are, why is the course called Managing Complexity, rather than, say, Managing Messes? A glib answer is you might not have been attracted to it because of the everyday meaning of mess. Yet another answer is that complexity is a rich term whose everyday meanings have been further enriched by 3.5 The story so far I have been discussing ethics as related to labelling things as ‘good’ and ‘bad’ or using more parochial words as substitutes. Different kinds of things could be said to be ‘good’ or ‘bad’, including means, ends, relationships, feelings, appearances, radiation levels and so on. The big ethical problem is how to combine this variety of things to reach a judgement, especially when combining them, it is possible that we end up with ambiguity or contradictions. I have explored the 2.5 The story so far I have now established an understanding of ‘ethics’ as something related with ‘good’ and ‘bad’. There are other derivative words like ‘optimal’ that might also be used, and there are parochial words which are related to particular communities. When we talk about ethics, we are liable to confront cultural differences that are reflected in differences in vocabulary. But there are other kinds of differences too. Things have different properties; for example, ‘appearance’ and 1.6 Final vocabulary Any ethical analysis has to be grounded on something, otherwise the analysis has no end. And since reasons will be couched in words, I think it is helpful to look at what the philosopher Richard Rorty has called a ‘final vocabulary’. He suggests: All human beings carry about a set of words which they employ to justify their actions, their beliefs, and their lives. These are the words in which we formulate prais
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