## Archive for September 2013

### Psychology by the numbers

September 29, 2013

Psychology would seem, at first look, to be one of the sciences with the least involvement with mathematics. After all, psychology is all about the mind, all about people – what does mathematics have to do with that?

Well, as it turns out, a lot! The main reason is that mathematics is of use, is that psychology has one aspect that most people don’t consider. Most think of psychology as relating to a single person, but there is one other consideration. We also care about how groups respond, andĀ how the individual compares to the group.

To this end, we need a simple way to describe groups, so we can compare them to each other and to the individual. The best way to do thisĀ reliably is to use mathematics – and we are interested in two particular concepts – the idea of what the average value of a group is, and the idea of how much the group is distributed.

In this post, I will cover the basic mathematics you will need to describe these concepts – which you will need for your Empirical Research Activity (ERA) report that is due at the end of term 4. The mathematics is *not* difficult, and you will be able to the majority of it on your computer, by using microsoft excel (or a similar piece of software).

### Looking through medical imaging

September 18, 2013

Well, this will be a quick unit. You might say that we will be only “looking through” it, rather than going for the full-on invasive surgery that we have done so far in our studies of motion.

The main purpose of this unit is to help you understand how we can use different types of radiation and other technologies to obtain information about the internal structures of objects or organisms that are not transparent to visible light.

When we have the ability to see into objects, it gives information that can be used to guide other choices – from determining the safety of a bridge (looking for microfractures in beams), to the integrity of a jet turbine or airscrew (checking to see for weaknesses that may result in catastrophic failure) or to diagnose medical conditions prior to surgery.

Your task for this unit is to select one of the following medical physics technology, and explain the basic physics behind what form of energy is used (define the type), how it is generated (if appropriate), how it interacts with material objects (how it is affected by passing through matter), how it is received (how the energy is collected and transformed so that the internal structure of what it passed through is made visible). You also need to discuss the advantages (what it allows the user to do) and disadvantages (what risks or dangers are inherent in the used of the technology).

### Coach Carter Resources

September 13, 2013

I am away with sick family; my wife is back in hospital. I expect to be back next week. To help you complete the Coach Carter assignment, here are some links for you.

Script & useful quotes (If you want top grades, I expect you to find your own relevant quotes)

http://www.script-o-rama.com/movie_scripts/c/coach-carter-script-transcript.html

http://www.imdb.com/title/tt0393162/quotes

See you in class.