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3.2.2 Group size

Another significant feature of a work group is its size. To be effective it should be neither too large nor too small. As membership increases there is a trade-off between increased collective expertise and decreased involvement and satisfaction of individual members. A very small group may not have the range of skills it requires to function well. The optimum size depends partly on the group's purpose. A group for information sharing or decision making may need to be larger than one for prob
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2.8 Why do (only some) teams succeed?

Clearly, it is not possible to devise a set of rules which, if followed, would lead inexorably to team effectiveness. The determinants of a successful team are complex and not equivalent to following a set of prescriptions. However, the results of poor teamworking can be expensive, so it is useful to draw on research, experience and case studies to explore some general guidelines. What do I mean by 'team effectiveness'? – the achievement of goals alone? Where do the achievements of individu
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2.3.7 New types of team

In addition to the traditional types of teams or groups outlined above, recent years have seen the growth of interest in two other important types of team: 'self-managed teams' and 'self-organising teams'.

During the 1990s many organisations in the UK became interested in notions of empowerment and, often as a consequence, set up self-managed or empowered teams. An Industrial Society Survey (1995) commented:


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References

Austin, J. (1986) How to do things with words. Edited by J. O. Urmson and Marina Sbisà. New York: Oxford University Press
Engineering Council UK (n.d.) Statement of Ethical Principles.
Frayn, M. (1965) The
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7.4 The impact of technology on society

Engineering is apparently driven by the needs of society. The technology that results, in turn, drives other changes in our everyday lives. One of the basic needs identified in Section 2 was for shelter. There are many fine examples of long-surviving structures such as pyramids, aqueducts, bridges, walls, functional buildings, and so on. Remarkably these constructions were completed without the depth of analysis and understanding that is available today (though we don't necessarily know much
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7.1 The engineer and society

Section 2 outlined some of the needs for engineering. Society relies on engineers to create solutions to the problems involved in meeting those needs.

This is a good time to pause and point out that inevitably, in return for all this fun and power, engineers have a responsibility to society. The people who employ our services, directly or indirectly, have to have an assurance that we are working within certain social, safety and ethical boundaries. Particularly given the increasing tren
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4.6 Assess and review

Following our problem-solving map, we have reached the stage of 'assess and review solution', Figure 16.

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4.5 Model the best solution

In moving from the 'possible solutions' to the 'best solution' box, Figure 12, we have to assume that a certain amount of evaluation has been done in the previous loop. The solution is still on paper, and probably not much more than a sketch, but something is badly wrong if the best solution to co
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3.5.4 Fungi

Fungi (e.g. species such as Penicillium which are used for manufacture of antibiotics, and yeast) are generally unicellular non-photosynthetic organisms which can tolerate acid conditions. They are capable of degrading highly complex organic compounds. They utilise much the same food sources as bacteria but they require less nitrogen since their protein content is lower. Fungi play an important role in sewage treatment.

In polluted water, particularly near to a se
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3.5.3 Protozoa

Protozoa are microscopic single cell animals. They utilise solid substances and bacteria as a food source. They can only function aerobically, and in a stream which contains little organic degradable matter they can become a predominant microbial type. They play an important part in sewage treatment where they remove free-swimming bacteria and help to produce a clear effluent.

In an aquatic environment, there are three main types of protozoa:

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3.5.2 Bacteria

Bacteria are organisms of special significance to the study of clean and polluted waters because they break down organic matter. While most of them are not harmful to humans, some bacteria (e.g. Clostridium) are pathogenic. Most bacteria are retained on a filter of pore size 0.45 μm and all bacteria are trapped on a filter of 0.22 μm. They are important in sewage treatment, and in solid waste disposal. They are extremely abundant in almost all parts of the aquatic env
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3.5.1 Algae

Algae are photosynthetic organisms that are generally aquatic; they are primary producers. Many freshwater algae are of microscopic size, but when amassed can be seen as a green, brown or blue-green scum. Blue-green algae are capable of producing toxins and these have caused the death of wild animals, farm livestock and domestic pets which have consumed the contaminated water. The toxins can produce a painful rash on human skin. The extract below shows what happened off the west coast
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7.3 The Great Nation

The expanded France, which styled itself the Great Nation, provoked a second European coalition against it, but by 1799 it had established itself as a force to be reckoned with: a military force in the first instance but also and not least a potent ideological force. Its influence and attraction spread far beyond its frontiers to other peoples under foreign rule, to Poland under the dominion of Prussia, Russia and Austria, to Greece under the Turks, and to Ireland under the British. A Dublin
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2.3 Fall of the Bastille, 14 July 1789

In a similar mood of aggrieved self-righteousness and revolutionary exultation came the fall of the Bastille, the medieval fortress and prison of Paris, on 14 July 1789. A catastrophic harvest in 1788 had provoked food riots in Paris and elsewhere. Louis XVI, alarmed both by this unrest and by the unexpected belligerence of the Third Estate, called troops into Paris to maintain order. It was feared that he also aimed to suppress the National Assembly, which rallied its supporters. The Parisia
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2 Determinism and free choice: a brief résumé

Imagine the following scenario. You and a group of your friends find five pounds on the street. It is too little money to hand in to the police, and too difficult to divide up equally. A happy solution is to donate it to charity and, as your walk home takes you past a charity shop, the task is entrusted to you. On the way home you stand outside the charity shop. Next to it is the off-licence. You are in an agony of indecision as to whether to do as you said you would, or spend the money on a
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1 Consciousness

Consciousness: The having of perceptions, thoughts, and feelings; awareness. The term is impossible to define except in terms that are unintelligible without a grasp of what consciousness means.… Consciousness is a fascinating but elusive phenomenon: it is impossible to specify what it is, what it does, or why it evolved. Nothing worth reading has been written about it.

(Sutherland 1995, 95)


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Acknowledgements

This course was written by Dr Emma Barker.

This free course is an adapted extract from the course A207 From Enlightenment to Romanticism c. 1780–1830, which is currently out of presentation

The material acknowledged below is Proprietary (not subject to Creative Commons licence) and used under licence. No alteration or manipulation of images is permitted and they must be used in context and for non commercial purposes.

Grateful acknowledgement is made to the following sourc
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Acknowledgements

This course was written by Dr Linda Walsh

This free course is an adapted extract from the course A207 From Enlightenment to Romanticism, which is currently out of presentation

Except for third party materials and otherwise stated (see terms and conditions), this content is made available under a Author(s): The Open University

1.1 Delacroix’s background

Ferdinand-Victor-Eugène Delacroix (1798–1863) was an artist raised amid the heroism and turmoil of Napoleon’s regime but whose artistic career began in earnest after Waterloo. His father (who died in 1805) held important administrative, ambassadorial and ministerial posts during both the Revolution and Napoleon’s rule. His brothers had fought for Napoleon, one being killed heroically in 1807 at the battle of Friedland, the other a general who was made a baron of the empire before being
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4.9.3 Limited characterisation

The other function of lighting was, inevitably, to assist characterization. Since Robinson advised portrait photographers to show sitters as moderately calm ladies and gentlemen, the lighting in commercial work is usually quiet and uniform, without dramatic contrasts of light and shade. This was intended to suggest tranquillity, harmony and self-control, in keeping with the limited stereotypical characterization discussed previously.

The use of lighting to convey dramatic characterizati
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