2.3 Computer systems

So far, I have introduced the major components of a computer, namely a processor along with input and output devices, plus main and secondary memory. I now want to explore three of these components a little further, starting with input devices.

Input devices have to collect some information from outside the computer and present it to the computer as data which is in a form the processor can work with. (Strictly speaking, ‘data’ is the plural of the Latin word ‘datum’. But in the
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2.2.2 Hollow tubing surfaces

In their doughnut-shaped representation, toruses can be thought of as being hollow tubes. Many other surfaces in space can also be drawn as if they were made of hollow tubing. Figure 15 shows two such examples.

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6 Thermoregulation and mammalian fur

A coat of profuse mammalian body hair is commonly called fur. Fur provides insulation, which is a property that one first thinks of as useful for mammals to help retain body heat. Fur is a unique and fundamental feature of mammals, though not all living species possess it.

Question 12


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Evaluating Web Sites Tutorial
This tutorial covers how to evaluate websites for credibility. It discusses the differences between the different domains and how to check to get the best information.
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1.2.1 What evidence are we reading?

Although we live in a society where a huge amount of information is available in the form of numbers, some of us still feel a mental fog descend when we are asked to deal with them. This is because numerical information is information in a very condensed and abstract form. A number on its own means very little. You have to learn to read it. Numeracy (the ability to work with numbers) is a skill that we can learn. It is a very useful skill, because it allows us to understand very quickly the <
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LCS Litigation Panel
Professional litigators discuss the types of things they do in their daily work. Panelists represent both public and private sectors.
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Repatriation and returning remains
19th Century philosopher Jeremy Bentham allowed his body to be put on public display after he passed on but would you allow your body to be displayed after you die? The following video and audio collection examines specific cases in which the issue of display and ownership are raised and explores how museums have handled this question. Experts share reasons for their beliefs regarding repatriation and refer to specific examples on the topic of whether remains should be returned to their country
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Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

5.1 The medical background

Blood pressure is normally tightly controlled in the face of large variations in blood flow required by activities such as vigorous exercise. The diameter of the blood vessels is under the influence of the so-called sympathetic nervous system. Impulses from the brain stimulate the release of a chemical substance, noradrenaline (1), from the nerve-endings close to the vessel walls. The noradrenaline then diffuses to the blood vessel wall, where it interacts with a specific molecular sit
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"Hogzilla" - do pigs get very large in the wild?
Wild Detectives investigates the legend of the giant "pig monster" named Hogzilla.  A hunter shot a giant wild boar and claimed it was over 3 meters long; investigators dig it up and measure it.  A documentary for kids. 3:07.
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TWEAKING GENERAL RELATIVITY: MOND RELATIVISTIC GRAVITY THEORY AS A SUBSTITUTE FOR DARK MATTER ...

The success of the standard concordance cosmological model in predicting the primordial abundances of the light elements, and modeling the power spectrum of fluctuations of the cosmic microwave background have suggested to many that its ingredients are all one needs to understand galaxies and galaxy systems. However, a number of ...
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The Dark Ages
This three-minute video is about the the second century A.D. when the Roman Empire was the beacon of learning, trade, power and prosperity in the western world. It shows some images that may be offensive to some. Not much depth in terms of data, but it does paint a picture of what life was like. (03:05)
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5.1 Energy services

Except in the form of food, no one needs or wants energy as such. That is to say, no one wants to eat coal or uranium, drink oil, breathe natural gas or be directly connected to an electricity supply. What people want is energy services – those services which energy uniquely can provide. Principally, these are: heat, for warming rooms, for washing and for processing materials; lighting, both interior and exterior; motive power, for a myriad of uses from pumping fluids to lifti
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3.4 The importance of understanding attitudes

One of the most important phenomena for a social marketer to understand is that of ‘attitudes’. Having said this, this is not a straightforward issue as there is much disagreement about the nature of attitudes, how they are formed, and how they determine our behaviour. Attitude theory research is a key focus for consumer behaviour theorists and derives from the field of psychology.

There are many definitions of attitude, for example, ‘the predisposition of the individual to evalua
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4.4 Manchester Literary & Philosophical Society and Board of Health

In the meantime Owen joined the town's social and intellectual elite, which like its politics was largely dominated by Dissenters. They were prominent in the Manchester Literary & Philosophical Society which Owen joined in 1793. There he associated with some significant reformers, heard papers on a wide range of intellectual, industrial and social topics, and himself presented papers dealing with such issues, including one on education.

The society was founded in 1781, the co-founders b
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4.1 An explanation

I will now elaborate on my answer from Exercise 1. I'm doing this because my internet search revealed more than I've written in the above answer, and to show that the invention of the telephone and its use by consumers is not as plain and simple as you may think. You were not expect
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3.2 Generalising Ampère's law

We need to generalise Ampère's law beyond the confines of static charge densities. Let's try adding an extra (and at this stage unknown) vector field, K to the right-hand side of the differential form of Ampère's law. The modified equation then reads

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References

Alexander, G. (2002) eGaia: Growing a Peaceful, Sustainable Earth through Communications, Florida, Lighthouse Books.
Allinson, C.W. and Hayes, J. (1996) 'The cognitive style index: a measure of intuition-analysis for organizational
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Acknowledgements

Course image: Davide D'Amico in Flickr made available under Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence.

The content acknowledged below is Proprietary (see terms and conditions) and is used under licence.

Grateful acknowledgement is
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Real Brazilian Conversations #5: Brazil’s political crisis, part 2
Want to understand what's happening to Brazil's politics? André and Guilherme discuss the Brazilian political and economical crisis. They also share some personal opinions. Part 2 of 3. The post...

Check out our website, reallylearnportuguese.com and find out more how we can help you to improve your Portuguese language skills!

3.3.3 Reassembling the parts

As the wreckage was pulled from the river it was examined and identified, and any failures of the metal components were recognised and tagged. This was a mammoth task, given that virtually the whole bridge had fallen into the water, including all the road decks, trusses, chains and hangers, eye bars and the two towers. The parts were then reassembled and all the failed or fractured components photographed and catalogued. Over 90 per cent of the bridge components were collected together and re
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