Wednesday, 2 December 2015

Talks on the web

Sometimes, when one speaks at a conference, the conference organisers request that you write up a paper for the proceedings of the conference, which then get published somewhere.  It seems to be increasingly the case that many people don't like writing conference proceedings for a variety of reasons, with the main one being that they are considered low-prestige places to publish, and consequently there are various drivers not to bother wasting time in writing them, or wasting interesting results that could be published somewhere else.  There is even pressure from on high not to write conference proceedings, coming from the REF culture.  I tend to write conference proceedings for those conferences which ask for them.  For one thing, it's not hard to write about the work that one has been doing, and usually (at least in my case) I can show some calculations that are interesting enough examples, but something that doesn't make the cut for a paper destined elsewhere.  They can also be good practice for PhD students to be involved in writing the proceedings and getting some publications on their CVs.  Also, it's a sign of collegiality that if my friends and colleagues can be bothered to organise a conference (which I know from experience can be quite time consuming) then I can play my part in making it a success, and write the request proceeding article, sticking it on the arXiv, too, so that anyone can read it (indeed, one went up yesterday from me for a conference in Sofia in October)

Still -- I certainly don't mind when conferences decide not to include proceedings.  They are probably an idea that has had their day.  What seems to be replacing them, though, is that conference organisers want to put talks up on the web after the conference.  This seems to me to be a total waste of time, unless one writes the slides that accompany one's talks to be completely self-contained, which is really a contradiction, since then there would be nothing to say during the talk.  I tend to put things on slides that I can't say in words (pictures, graphs, movies etc) and say most of the words myself, rather than have people read them.  Since most of the talks get put up as pdf files, movies don't really work at all, but what's missing is the commentary and the context.  I really find it next to useless.  Attached to this post is a screen grab from one talk of mine that has been put on the web by a conference organiser.  The grab shows a snapshot from  an animation of a calculation of the collision of two uranium nuclei.  A snapshot of an animation is a poor proxy for the whole thing.

Friday, 20 November 2015

Surprising REF article

I came across, via a tweet by a colleague, an article in Times Higher Education written by someone who felt compelled to quit as a member of a REF panel.  Among the reasons given, is the following paragraph
But it became clear to me that, in spite of everyone’s best efforts, the system does not constitute peer review in any meaningful sense. There is simply too much material to assess with the care that would be rightly expected for reviews for research grants, publications or promotions.
The thing that really surprised me about the article is that there is anyone out there in academia who actually ever thought that it even could be possible that the REF could really do anything approaching decent peer review.  I think the quantity of material is a red herring, really.  The main point (which is also mentioned in the article) is that the subject matter is so specialised that the kind of numbers of people on a REF panel cannot judge across a discipline in a fair way.  I get sent papers by journals to referee, but they are absolutely lined up with my area of research.  I'm a nuclear physicist and there are papers in nuclear physics which a competent journal editor would not send me to referee, because I couldn't do a fair job of it.  Journal editors know this very well, and they understand peer review.  Whoever came up with the REF does not understand it.

Thursday, 19 November 2015

My talk at ISNET

My last day at the ISNET-3 workshop also featured my talk.  I was happy enough with how I presented what I presented, though I can't help feel that the audience would have been more interested in what I said if I had performed a more sophisticated analysis of my calculations... which I guess is the point of the workshop.  The lesson, I think, is that accepting invitations to too many workshops is not consistent with having time to do lots of calculations, especially if one does not have a large team of postdocs and students behind you.  On the other hand, I had three separate discussions which led to plans to collaborate on some different projects -- on on the link between fusion cross-sections and the nuclear equation of state, one on fission and another on giant resonances.  Now to do the necessary calculations.  

Here are some calculations I presented in my talk today.  They show a case in which varying model parameters can give different outcomes.  In this case, the parameters is the size of the space in which I perform my calculations, with all other physics input the same.  The result is that in one case we get fusion, and in another not.  That's sort of bad, in that we don't want things to depend on technical details of calculations, but usually we can't completely avoid it, and at least we should better map out where the are such issues.  




Monday, 16 November 2015

A bunch of posteriors

It's the end of the first day of the ISNET–3 workshop I mentioned yesterday.  There have been a number of interesting talks by people using sophisticated statistical methods to better understand what their theoretical calculations (mostly, though we've also had a couple of talks by experimentalists) are telling them.  At least, it seems sophisticated to me, since I think of a posterior (as a noun) as something to sit on.  I will not be able to hide just how unsophisticated I am for very long, as I'll be talking on Wednesday.  Hopefully at least my talk will prompt some useful comments from the audience.

The workshop is in a basement room with no windows (at least, none that are not covered up).  I suppose this is a deliberate plan to stop us from looking at the beautiful scenery, such as the picture attached here that I took during the lunch break.

Sunday, 15 November 2015

France, Lebanon, Italy

I am on my way to Italy, for a conference about Information and Statistics in Nuclear Experiment and Theory.  Of course, the news at the moment is more about France, and the terrible attacks against those enjoying their Friday night to go out and enjoy a meal, a football game, or a music concert.  

Less prominent in the UK news was a similar attack in Beirut on the same day with a loss of civilian life of the same magnitude, if not quite so high.  

I don't think I have anything especially sage to say, except that the right thing to do when making a point is to rise above the idea that killing people is an okay way to do it, even if you think that those you are against do it routinely.  Let's be nice to each other -- and take responsibility for taking the lead in it, even when we feel slighted.

As an unrelated picture, here's my youngest daughter, at the library, showing her delight in reading books.  Hopefully that is an indication of more hope for the future (though I suppose it depends what books she gets in to).


Wednesday, 11 November 2015

A new paper on fission and one of fusion (so all bases covered)

When PhD students leave and graduate and get jobs doing other things, they don't always (ever?) write up the things in their thesis for publication -- at least that's my experience in the UK where the funded PhD takes last for three years, and there is usually a race to get the actual thesis submitted in time.  

So, it is often the case that I sit on work by my PhD students that could usefully be disseminated in the form of publications that are a little more wieldy than the thesis itself, though these are now easy enough to make available electronically. 

Today, I submitted a paper drawing on work on nuclear fusion from one student, Emma, but with later contributions from another student (Matthew, who is a current student at Surrey), and another paper got published about nuclear fission in Physical Review C today based on part of the thesis of another student, Phil, who finished his PhD last year.  The fact that the latter paper has seen the light of the day relatively quickly is thanks to Phil's co-supervisor, Arnau, who did the lion's share of kicking the draft into shape.  

If you want to read these papers that have been published / submitted, then the go-to place is the arXiv, where physicists put versions of papers before submission, updating in light of referee comments, so that they are free to read to anyone.  These versions are here and here.  The picture accompanying the post is a figure from the paper published today, showing snapshots in a simulation of fission of a plutonium isotope.


Wednesday, 4 November 2015

#uknucleartheory

In celebration of the fact that there are now three Universities in the UK that have theoretical nuclear physics activity (York now, to add to Surrey and Manchester), the nuclear theory community have got together to introduce ourselves to the new group & vice versa, and to generally chew the fat (though in my case, being a vegetarian, I'm more swooshing round some olive oil).  We've spent the time in a combination of giving short talks about what we each do, and then talking a bit about that and a bit about political things.  Day one has been nice.  Our meeting is in Manchester.  As soon as we arranged the dates, it was clear that for some reason hotels were really really expensive.  Chris, the PhD student from Surrey pointed out the reason -- that Manchester United were playing a home Champions League match against a Russian team.  Though it's not my own money, I still kinda resented paying three figures per night for a room in a standard hotel in Manchester, so I'm in The Diamond Lodge, which is in the suburb of Gorton, next to the dog track.  Not necessarily the most salubrious part of town, I've been led to believe, but it's a perfectly nice hotel, and there's an easy bus ride to (close to) the University.  Anyway, the only trouble I've had here was near the University, where I met my sister-in-law for lunch.  We were in a pub when a really drunk guy came in and started dancing and singing to the song on the jukebox, with a can of Stella in his hand.  He the wandered off to another part of the pub.  After a few minutes, he found cause to spray the Stella from his can over the pub -- aimed (inadvertently, as far as I can tell) at me.  That seemed to have followed some altercation and the staff were trying to throw him out.  He was making all kinds of threats (his girlfriend was going to come and do nasty things to the bar staff, apparently), whence he left, with a last act, as he went through the door, of throwing his half-full can of Stella back into the pub, narrowly missing me.  

Oh well.  I think that was something of a one-off. For dinner, the locals had organised us a dinner at a restaurant at the centre of town called Croma.  It was okay -- I can see how people like it, but it's not really a place that caters for vegetarians, though the Margherita pizza was fine.  I left a bit hungry, though, which seems to be unfortunate for a restaurant.  

I got the bus back for the long ride to Gorton from stop E0 on Piccadilly.  For those reading that are nuclear physics experts, you will no doubt smile at the amusement I felt, as someone interested in giant monopole resonances, that I had to use a stop named E0.