I am currently teaching a computational modelling course. This is assessed via a couple of reports. These student reports should cite references to back up their statements. For example if they are using a particular algorithm, they should cite a reputable work that describes that algorithm. The work should be a textbook, a peer-reviewed paper, or a good Wikipedia article – I think many Wikipedia articles are of a high standard, so one would be fine. Citing an article in The Sun newspaper would probably not be acceptable.
Author Archives: Richard Sear
Computational physicist at the University of Surrey. My research interests are in COVID-19 transmission, especially masks, soft matter & biological physics
Youthful beauty queens do not prevent murder by scalding
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008 was a turbulent year in many ways. Our banking system almost crashed, and had to be rescued at taxpayers’ expense. It was also the year which marked the end of the previously impressive correlation between the age of Miss America and the rate of murder in the USA by steam and hot objects. Up until then, for every year with a youthful Miss America, the murder rate dropped, while when a slightly older woman was victorious, the murder rate increased. The correlation is quite impressive. I have seen a lot worse in plots in scientific papers.
Pubs to atomic weapons
In March I’ll be giving a physics careers talk at a Surrey school (Nonesuch School for Girls). I haven’t given a careers talk for ages, I used to do a fair few when I was admissions tutor but I stepped down from that job years ago. So I thought I would see what our graduates actually go on to do, to refresh my memory.
Cause and effect in the UK’s “top” universities
As a scientist I know that correlation does not imply causation. Just because two things, A and B, are correlated does not imply that A causes B or vice versa. For example, there is a correlation between the number of pirates on the world’s oceans, and global temperature, but this does not imply that pirates, or their absence, is causing global warming. But even if there is cause and effect going on, then you still have to work out if A causes B, or if B causes A.
The missing link
Genes get a good press. The DNA double helix is a iconic, and we are all know that genes are how we inherit our mother’s blue eyes or our father’s curly hair. Proteins also have a good press. Food is sold as being “high in protein” — we know we need protein as part of a balanced diet. But the third key biological polymer, RNA, gets much less publicity. This is a shame, as our cells have a lots of it (more than DNA), and it is essential to all life on Earth.
Cancer’s a gamble but you can load the dice
This is an update on last week’s post on a paper on cancer by Tomasetti and Vogelstein. Fur has flown over this paper, in particular with some of the media coverage. There was an interesting, and angry, article in The Guardian, and remarkably an arm of the World Health Organisation (WHO) produced a press release on the paper. They were not impressed. And journalists reflected on their coverage of the article. It was all go.
Scientists have dug up a new antibiotic
As a society we have become very dependent on antibiotics since penicillin was introduced 70 years ago. Before then healthy adults would die of sceptic shock from massive infection. We don’t want to go back to those days, and so we need to develop new antibiotics at least as fast as the bacteria in hospitals are evolving resistance to our existing ones*.
Cancer may be mostly a matter of chance
This is the message of a paper by Tomasetti and Vogelstein, that came out last week. Unlike a lot of papers in Science it is beautifully written, with a simple idea and a clear message. They start with the simple observation that some cancers are much much more common than others. For example, the American figures they quote give a lifetime risk of cancer of the colon of 5%, and risk of bone cancer of the pelvis of 0.0003%. Why the difference?
My fellow scientists cite my work at random
Although the average number of times people cite my papers is lower than that for a Siamese cat, people do cite my work. And so Google Scholar reckons that at the time of writing my papers have attracted a total of N = 2858 citations and I have a h-index of 27. The value h of the h-index (named after Jorge Hirsch) is the number of papers that have been cited, i.e., referenced, at least h times. I have published 27 papers which have all been cited at least 27 times.
The science behind some of the few types of booze I didn’t drink over Christmas
Over Christmas, as is traditional, I have been eating and drinking a lot. The drinks include beer, wine, dessert wine, liqueurs, etc, but no ouzo, pastis or sambuca. Ouzo, pastis and sambuca all have the distinctive flavour of aniseeed. While Googling something for a paper I am drafting I came across the explanation for why these drinks become cloudy when you add water. Ouzo for example is quite strong, about 40%, and so it is often diluted with water, but as soon as the water is added, the ouzo goes from clear to cloudy.
Chance & Necessity 