Archive for March, 2011

Time Long Past

Posted in Poetry with tags , on March 20, 2011 by telescoper

Like the ghost of a dear friend dead
Is Time long past.
A tone which is now forever fled,
A hope which is now forever past,
A love so sweet it could not last,
Was Time long past.

There were sweet dreams in the night
Of Time long past:
And, was it sadness or delight,
Each day a shadow onward cast
Which made us wish it yet might last
That Time long past.

There is regret, almost remorse,
For Time long past.
‘Tis like a child’s belovèd corse
A father watches, till at last
Beauty is like remembrance, cast
From Time long past.

by Percy Bysshe Shelley (1792-1822)


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Astronomy Look-alikes, No. 54

Posted in Astronomy Lookalikes with tags , , on March 19, 2011 by telescoper

Here’s a lookey-likey sent to me anonymously by Monica Grady, although I think Mrs Doubtfire is a closer match for John Zarnecki than Robin Williams:


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The Day the Earth Didn’t Stand Still..

Posted in The Universe and Stuff with tags , , on March 19, 2011 by telescoper

I just came across this amazing visualisation of the recent Earthquake in Japan, created using GPS readings from a network called GEONET. The video shows the horizontal (left) and vertical (right) displacements recorded when the Earthquake struck. For more information and images, see here.


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What Counts as Productivity?

Posted in Bad Statistics, Science Politics, The Universe and Stuff with tags , , , , on March 18, 2011 by telescoper

Apparently last year the United Kingdom Infra-Red Telescope (UKIRT) beat its own personal best for scientific productivity. In fact here’s a  graphic showing the number of publications resulting from UKIRT to make the point:

The plot also demonstrates that a large part of recent burst of productivity has been associated with UKIDSS (the UKIRT Infrared Deep Sky Survey) which a number of my colleagues are involved in. Excellent chaps. Great project. Lots of hard work done very well.  Take a bow, the UKIDSS team!

Now I hope I’ve made it clear that  I don’t in any way want to pour cold water on the achievements of UKIRT, and particularly not UKIDSS, but this does provide an example of how difficult it is to use bibliometric information in a meaningful way.

Take the UKIDSS papers used in the plot above. There are 226 of these listed by Steve Warren at Imperial College. But what is a “UKIDSS paper”? Steve states the criteria he adopted:

A paper is listed as a UKIDSS paper if it is already published in a journal (with one exception) and satisfies one of the following criteria:

1. It is one of the core papers describing the survey (e.g. calibration, archive, data releases). The DR2 paper is included, and is the only paper listed not published in a journal.
2. It includes science results that are derived in whole or in part from UKIDSS data directly accessed from the archive (analysis of data published in another paper does not count).
3. It contains science results from primary follow-up observations in a programme that is identifiable as a UKIDSS programme (e.g. The physical properties of four ~600K T dwarfs, presenting Spitzer spectra of cool brown dwarfs discovered with UKIDSS).
4. It includes a feasibility study of science that could be achieved using UKIDSS data (e.g. The possiblity of detection of ultracool dwarfs with the UKIRT Infrared Deep Sky Survey by Deacon and Hambly).

Papers are identified by a full-text search for the string ‘UKIDSS’, and then compared against the above criteria.

That all seems to me to by quite reasonable, and it’s certainly one way of defining what a UKIDSS paper is. According to that measure, UKIDSS scores 226.

The Warren measure does, however, include a number of papers that don’t directly use UKIDSS data, and many written by people who aren’t members of the UKIDSS consortium. Being picky you might say that such papers aren’t really original UKIDSS papers, but are more like second-generation spin-offs. So how could you count UKIDSS papers differently?

I just tried one alternative way, which is to use ADS to identify all refereed papers with “UKIDSS” in the title, assuming – possibly incorrectly – that all papers written by the UKIDSS consortium would have UKIDSS in the title. The number returned by this search was 38.

Now I’m not saying that this is more reasonable than the Warren measure. It’s just different, that’s all.  According to my criterion however UKIDSS measures 38 rather than 226. It sounds less impressive (if only because 38 is a smaller number than 226),  but what does it mean about UKIDSS productivity in absolute terms?

Not very much, I think is the answer.

Yet another way you might try to judge UKIDSS using bibliometric means is to look at its citation impact. After all, any fool can churn out dozens of papers that no-one ever reads. I know that for a fact. I am that fool.

But citation data also provide another way of doing what Steve Warren was trying to measure. Presumably the authors of any paper that uses UKIDSS data in any significant way would cite the main UKIDSS survey paper led by Andy Lawrence (Lawrence et al. 2007). According to ADS, the number of times this has been cited since publication is 359. That’s higher than the Warren measure (226), and much higher than the UKIDSS-in-the-title measure (38).

So there we are, three different measures, all in my opinion perfectly reasonable measures of, er,  something or other, but each giving a very different numerical value. I am not saying any  is misleading or that any is necessarily better than the others. My point is simply that it’s not easy to assign a numerical value to something that’s intrinsically difficult to define.

Unfortunately, it’s a point few people in government seem to be prepared to acknowledge.

Andy Lawrence is 57.


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Mutability

Posted in Poetry with tags , on March 17, 2011 by telescoper

We are the clouds that veil the midnight moon;
How restlessly they speed, and gleam, and quiver,
Streaking the darkness radiantly!–yet soon
Night closes round, and they are lost forever:

Or like forgotten lyres, whose dissonant strings
Give various response to each varying blast,
To whose frail frame no second motion brings
One mood or modulation like the last.

We rest.–A dream has power to poison sleep;
We rise.–One wandering thought pollutes the day;
We feel, conceive or reason, laugh or weep;
Embrace fond foe, or cast our cares away:

It is the same!–For, be it joy or sorrow,
The path of its departure still is free:
Man’s yesterday may ne’er be like his morrow;
Nought may endure but Mutability.

by Percy Bysshe Shelley (1792-1822)


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Desperate Measures

Posted in Uncategorized with tags , , on March 17, 2011 by telescoper

Heard this morning that helicopters are being used to drop sea water onto the stricken reactors at Fukushima. This looks like desperation to me. A back of the envelope calculation suggests there’s no way they can get enough water in that way, and it’s exposing the pilots to radiation risk too.

I’ve been looking at the layout of the plant I posted yesterday

Notice that it’s right on the coast, with the sea just metres away from the reactors. It seems to me that what they could do is get hold of some ships (e.g. fire-fighting vessels) with heavy duty pumping equipment, get them right up to the plant, get the pumps working and then get all the crews the hell out of there.

Can anyone see a reason why that wouldn’t work?

And while I’m at it, over on Cosmic Variance there’s a pretty clear explanation of what exactly went wrong when the tsunami struck.

Although the tone of the above post is a tad melodramatic, it’s nothing compared to what Michio Kaku’s been saying. Physicists never look good when they go seeking publicity for themselves…

Here’s a more measured summary at New Scientist and another from the Telegraph by way of balance.


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Things to Come

Posted in Jazz with tags , , , , , on March 17, 2011 by telescoper

I haven’t posted anywhere near enough music by the great Dizzy Gillespie on here so I thought I’d put up this clip which shows him in 1968 leading a phenomenal big band. Things to Come was an original composition by Dizzy Gillespie but it was Gil Fuller who provided the complex, gyrating arrangement which broke new ground when it was first performed (in 1946) in terms of the technical demands it made on the musicians, especially the trumpet section, but also in the sheer excitement it generated when performed live. This clip features a later version of Dizzy Gillespie’s Big Band which re-formed for a time in the 1960s after  a fairly lengthy hiatus, but it does contain several musicians who played in its earlier manifestation, including James Moody on tenor, who sadly passed away last December, but it is Paul Jeffrey who plays the wild tenor solo on this track. Star of the show, however, is undoubtedly Dizzy Gillespie whose staggering pyrotechnics threaten to blow the roof off!


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Aftershock

Posted in Uncategorized with tags , , , , , , on March 16, 2011 by telescoper

I haven’t commented so far on the crisis engulfing Japan after last Friday’s devastating earthquake and the ensuing tsunami. I can assure you that it’s not because I don’t care, it’s just that it’s hard to see how simply adding to the blizzard of words can do anything to help the Japanese people meet the immense challenges ahead. I’ve also wanted to make sure that everyone I know who’s actually in Japan at the moment was safe before I felt comfortable about writing anything.

The first thing I want to do is to express deep condolences to anyone who has lost relatives or loved ones in the disaster. Catastrophes such as this, coming out of the blue, must be extraordinarily difficult to come to terms with. My thoughts are with everyone struggling to provide assistance to those still suffering in the aftermath. It’s important to express compassion and humanity at times like this, especially when so many others seem anxious to do the opposite. An even better way of distancing yourself from the revolting pondlife that lives at the bottom of the internet is to donate to the relief effort. There are various ways to do this, but a good one is via the Red Cross.

One of the thing’s that has disturbed me most about the way the media (at least here in the UK) have behaved the aftermath of the earthquake is that they have focussed almost exclusively on the state of the nuclear power station at Fukushima. I’m not saying that this isn’t newsworthy, but it’s certainly not the only thing in Japan that merits coverage. Half a million people are homeless, many of them in freezing conditions, needing food and medicine, and emergency repairs will need to be carried out over a large part of the country. I think it’s disrespectful to all those caught up in the wider catastrophe to be so fixated on Fukushima.

Moreover, much of the press coverage of the Fukushima situation has been at best ill-informed and at worst scaremongeringly hysterical. I suppose that’s the sort of stuff that sells newspapers. It hasn’t helped that accurate information has been hard to come by – speculation always follows when that’s the case. Nevertheless, not to put too fine a point on it, I think we should all be concentrating on doing whatever we can to help the victims of the earthquake, instead of jerking off over the prospect of a nuclear catastrophe.

I’ve reblogged a much calmer account written by someone who actually knows what he’s talking about, which might help calm some fears.

Situation at the Fukushima Plant, 16/3/2011

Hopefully the situation will be contained before long, but whatever eventually happens at Fukushima it’s clear that there will now be hugely increased political opposition to further investment in nuclear (fission) power around the world. Indeed, the German government has already overreacted in bizarre fashion by shutting down existing reactors. One can certainly question the Japanese decision to build reactors so close to a major fault zone, but I can’t see any justification for German panic because the events in Japan over the last few weeks can’t possibly be repeated in Germany.

I have to admit that although I don’t fear nuclear power, I’ve never thought of the fission reactor as anything other than a stop-gap. I’d personally like to see much higher investment in long-term renewable energy sources and on fusion power, and rather less on fission reactors. We also need to learn to use less fuel, especially petrol. I don’t understand it’s so unthinkable to so many people, but I’ve never had a car fetish.

The loss of capacity from its nuclear reactors is going to be a major factor for Japan for some considerable time. Before the earthquake, Japan relied on nuclear energy for almost 30% of its electricity generation. Even if there were both the political will and the financial resources available to rebuild and restart nuclear power facilities – both of which are highly unlikely – it would take many years to restore the losses. Japan is not blessed with rich fossil fuel reserves, and it is unlikely that renewable energy can make up much of the shortfall. It seems to me, therefore, that Japan has no alternative but to cut its power consumption by a significant fraction for some considerable time. It’s going to be tough to achieve that, but they have no choice; just as much of the rest of the world will have no choice when the oil and gas runs out a few decades from now.

Alongside the critical question of how Japan will power itself in the short to medium term, there is also the cost of rebuilding the infrastructure so comprehensively destroyed by the tsunami. Estimates of the cost of this are well over £100 billion. Moreover, Japan’s economy was struggling with a very high level of per capita debt even before this blow. Likely power cuts and short-time working will not make it easy to rebuild the country.

The full impact of the Japanese disaster on the rest of the world is difficult to assess, but it’s not impossible that it may precipitate another global financial crisis.

Put all this together and it’s hard not to disagree with the Emperor of Japan who is reported to be “deeply worried”. I think we all are. But worrying won’t help anyone. Crises like this have a habit of bringing out the best in certain people, and although the forthcoming months and years will severely test the resilience and resourcefulness of the Japanese people, I hope and believe that they will pull through. And teach the rest of us a few things on the way…


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Why I am not worried about Japan’s nuclear reactors. (via Morgsatlarge – blogorific.)

Posted in Uncategorized on March 16, 2011 by telescoper

A voice of reason amid the nuclear hysteria…

Please click through to the new location of the post. I flagged this for a reblog some time ago, and didn’t check that the post had changed before actually posting it.

This post has moved. It is now hosted and maintained by the MIT Department of Nuclear Science and Engineering. Members of the NSE community have edited the original post and will be monitoring and posting comments, updates, and new information. http://mitnse.com/ The MIT website will be continually growing and evolving, so bookmark and check back regularly. Thank you everyone for your past and continuing support in our effort to empower the publi … Read More

via Morgsatlarge – blogorific.

The Ides of March

Posted in Uncategorized with tags , , , on March 15, 2011 by telescoper

Today being the Ides of March, I was looking about for something to mark the occasion when I chanced upon this video, produced, as part of Project Chanology, by members of Anonymous. The subject is a number of unexplained deaths connected with scientology. Almost as scarily, the original website http://www.whyaretheydead.net has been taken over, and now offers the reader a link directly to a Scientology website.


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