Virtual Maths, Shapes, Space and Measure, Rearranging Formulae
Interactive simulation, rearranging formulae (letters and numbers)
Author(s): Leeds Metropolitan University

Living the Best Life Possible: Doctor and Patient Conversations About Serious Illness and Mortality
Many Americans may confront illnesses so serious that they are life threatening. These diagnoses may come with treatment attempts and hospital stays. What they may not include are honest and open conversations about the final stages of life. How might the patient want to live during these stages? What choices are most likely to bring a sense of peace and empowerment? How might family members be included in these discussions? A growing palliative care movement is encompassing these questions, bri
Author(s): No creator set

Section 2

The law of conservation of charge applies locally at each point and time, so any variation of the total charge within a closed surface must be due to charges that flow across the surface of the region. This principle leads to the equation of continuity:

Author(s): The Open University

Substituting Equation 7.21 into Faraday's law gives

This shows that a propagating electric wave is automatically accompanied by a transverse magnetic wave. The magnetic field oscillates in the y-direction, which is perpendicular to the directi
Author(s): The Open University

We begin by making some simplifying assumptions about the electric field. This is legitimate because we are not looking for the most general solution to Maxwell's equations, but only for special solutions that exhibit wave-like behaviour. We will ultimately check that our solutions for the fields satisfy all of Maxwell's equations, and hence obtain retrospective support for our initial assumptions.

If you drop a pebble in a pond, waves spread out in all directions on the surface. Many e
Author(s): The Open University

Figure 4 shows a parallel plate capacitor with circular plates, which is being charged by steady currents flowing along straight wires. We know that there is a circular pattern of magnetic field lines around the wires, but what happens inside the capacitor, between the plates?

Author(s): The Open University

The following graph (Figure 9) records how the outside diameter of a hypodermic needle is related to the needle gauge number.

Molecular approaches to the study of hibernation have combined largely non-hypothetical analytical and targeted methods. The analytical approach shows changes in the expression patterns of novel genes, often with unforeseen or unknown functions in hibernation, whilst indicating that the scale of the full range of adaptive genetic changes is small. The targeted approach has confirmed an important role for gene products normally involved in maintaining biological rhythms and energ
Author(s): The Open University

This free course provided an introduction to studying Science. It took you through a series of exercises designed to develop your approach to study and learning at a distance and helped to improve your confidence as an independent learner.

Author(s): The Open University

A gene is a short section of a long DNA double helix molecule, which comprises a linear sequence of base pairs.

## SAQ 1

What is the basic (primary) structure of a protein?

We next establish some general results about Euler characteristics. We start with a theorem that tells us what happens to the Euler characteristic of a surface when we remove an open disc.

## Theorem 10: Disc Removal Theorem

The Euler characteristic of a surface with an open disc
Author(s): The Open University

Examples of surfaces without boundary are a sphere and a torus. Other examples are the following:

n-fold toruses

Figure 13 depicts a 2-fold torus and a 3-fold torus, with two and three rings respectively. An n-fold torus, for any positive integer n has n rings. (A
Author(s): The Open University

Changing cities
Urban processes are increasingly held to be responsible for causing a variety of problems â€“ environmental destruction, social injustice, global financial instability. They are also identified as harbouring the potential to meet these challenges â€“ through urban experiments in sustainably living, creative culture and alternative economies. This unit explores how contemporary processes of urbanisation challenge how we think about political agency, providing a framework for the analysis of the c
Author(s): Creator not set

With multimode fibre, the main cause of pulses spreading is the multiple paths that signals can traverse as they travel along the fibre. This phenomenon of multimode distortion is illustrated in Figure 5.

Author(s): The Open University

In consumerist societies, buying, using and displaying products has come to represent a certain type of pleasure. This pleasure principle has to be acknowledged in new product development and design. The designer Kenneth Grange has said that a guiding design principle for him is that a product should be â€˜a pleasure to useâ€™.

The pleasures of using a product are derived from the perceived benefits it offers to the user. Can we be more explicit in planning product benefits that are ple
Author(s): The Open University

Recall that a key usability design feature identified by Donald Norman â€“ from his analysis of using everyday objects such as doors â€“ was visibility. An everyday object such as a door, or a control such as a button on a product should appear to be obvious about how it is used, and indeed it should perform that obvious function. For example, is it obvious how you insert a disc into a player? Is it obvious how you switch the machine on, adjust volume, and so on?

Author(s): The Open University

This section reveals that many modern products need to usable by our minds as much as our bodies. Products need to be understandable, and present information and feedback in meaningful ways.

A lot of ergonomics research is aimed at establishing guidelines, standards or rules that can be applied by designers in a variety of situations. Where this applies to the physical use of products, much of it is based on standard body measurements. These body measurements are known as anthropomet
Author(s): The Open University

7 Ergonomics and human factors

This section discusses designing for human capabilities and limitations. It introduces the study of ergonomics which can offer general guidelines as well as specific suggestions for good, user-centred product design.

Taking the user as the central point of reference for the design and evaluation of products is the approach encouraged by ergonomists.

The field of ergonomics (also known as human factors engineering) is the systematic study of human capabilities, limitations and requ
Author(s): The Open University

3.3.4 Examining the parts

Brittle fractures were discovered quickly in the mass of debris hauled from the river. Such samples became the focus of increasing effort as time went by, simply because they were unexpected. So the possible failure mechanisms were immediately narrowed down when brittle fractures of critical components started to emerge from the river.