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A brief history of evolution
History & The Arts

A brief history of evolution

...de Maupertuis proposed the spontaneous generation and extinction of organisms as part of his theory of origins. However, he advanced no theory of evolution. Georges-Louis Leclerc, a prominent naturalist of the time, explicitly considered, and rejected, the possible descent of several species from a common ancestor. The physician Erasmus Darwin, grandfather of Charles...
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Article 30 mins
An introduction to public leadership
Money & Business

An introduction to public leadership

...types of team? High performing team.West (2004) preferred the phrase ‘full functioning team’ to describe a team with high levels of task reflexivity, enabling it to be focused on learning and improvement and highly adaptable, and with high levels of social reflexivity, enabling it to be very cohesive and resilient. While a team may be high performing, if it doesn’t...
View course An introduction to public leadership
Level 1: Introductory 9 hrs
IT: device to device communication
Science, Maths & Technology

IT: device to device communication

...phrases. These provide some helpful pointers to the core points and ideas of a text. When authors write articles for professional journals they are usually asked to provide an abstract and some keywords even if these aren't to be included with the article itself. The reason for this is that the abstract and keywords can be listed in the search results when library...
View course IT: device to device communication
Level 1: Introductory 20 hrs
Methods in Motion: The social psychology of citizenship
Health, Sports & Psychology

Methods in Motion: The social psychology of citizenship

...types of political action from equally diverse political actors. Analyses of sexual, multicultural, and feminist citizenship, among many others, point to the importance of this concept for understanding and engaging with contemporary politics. It is therefore no surprise that citizenship has been at the core of much scholarly work from sociologists, political theorists...
View article Methods in Motion: The social psychology of citizenship
Article 5 mins
How have family budgets changed in sixty years?
Money & Business

How have family budgets changed in sixty years?

...types of household expenditure enabled the Government to improve the measure of inflation and also provided expenditure information in relation to income and family circumstances. This remains an important function of the LCFS – although the prices that feed into the consumer inflation figures are collected separately, data from this survey do feed into the annual...
View article How have family budgets changed in sixty years?
Article 5 mins
Injection moulding
Science, Maths & Technology

Injection moulding

...type of DMC, and the injection moulding method. Polymer Moulding temperature To (°C) Freeze-off temperature TF (°C) Freeze-off temperature TE (°C) Demoulding temperature TD (°C) LDPE 220 90 50 60 PVC 170 140 50 110 PP 250 135 50 105 POM 220 135 50 105 PS 230 130 50 100 ABS 230 140 50 110 PMMA 260 160 50 130 PPO 280 180 50 150 PC 310 200 50 170 Nylon 66 290 240 50 210...
View article Injection moulding
Article 5 mins
Blow moulding
Science, Maths & Technology

Blow moulding

...type of container. Co-extrusion, mould inserts and “two-shot” injection moulding are used to produce multi-wall preforms for the production of laminated containers. Labels coated with hot-melt adhesive can be placed in the mould halves before moulding. The process is used for a wide range of liquid containers from shampoo bottles to petrol tanks, and is slowly...
View article Blow moulding
Article 5 mins
Fluid and Rubber Die Forming (Guerin and Hydroform)
Science, Maths & Technology

Fluid and Rubber Die Forming (Guerin and Hydroform)

...type of material and the forming pressure required. The effect of springback and the amount of buckling that occurs is shown in the following diagrams. Fluid forming can be used for deep recess parts up to 250 mm deep. [Diagram to demonstrate 'Fluid and rubber die forming (Guerin and Hydroform)' - see article] [Diagram to demonstrate 'Fluid and rubber die forming (Guerin...
View article Fluid and Rubber Die Forming (Guerin and Hydroform)
Article 5 mins