Here my brief reply to Sybille:
you do not always need pencils, it depends on the tablet. In this randform video a neighbour uses gift wrap as an input device. You can see that with the thick side of the wrap she draws on the ipod, the small side seems to produce not enough capacitance for drawing. Using two loops of the wrap the gesture translation system translates this into the ipod zoom. So depending on your gesture translation you could even maybe play a little cricket game.

However in some sense your body acts as a conducting material, hence you have to be careful, since if you should accidentally hold an open wire of an electronic device, like a speaker cable in your other hand then you may be in conflict with a Microsoft patent - if I rightly understand the abstract at
http://architectradure.blogspot.com/2007/05/method-and-apparatus-for-transmitting.html.

There is currently a not so easy discussion about the ambiguity of perception in the comment section of the post about dripping pains. Thinking about the ambiguity of perception I was asking myself why I had heard a lot about protests against windfarms (see e.g. this website) but for example not so much about protests against the visual (and sometimes auditive) pollution of advertisements.

Wind farms are rather loud and ugly and it would certainly be nicer to have a landscape without them, however the alternative is apart maybe from solar energy usually much, much uglier or dangerous (like to have a nuclear power plant instead). I am asking myself wether beople don’t see that these are the (more or less only) alternatives to wind farms or wether they really prefer to choose e.g. a nuclear power plant (see e.g. this and/or this randform post) over a wind farm.

Moreover one has some flexibility in installing a windfarm, like one should be able to find a compromise in order not to install it right next to a concert hall, just as one usually builts wind farms a little away from streets in order to ensure the safety of traffic.

And as I said already for some strange reason not so much protest is heard about the pollution of advertisement and their danger in traffic. The images (top and bottom) illustrate how advertisements may or may not draw the attention of a traffic participant away from street signals and signs.

How dangerous are advertisements like of this kind where the stop lights are almost invisible? (high resolution)

In an earlier randform post I tried to give some motivations on why one should see “competitions” more critical.

For the major aspects of a competition I identified – as mentioned in the post – the existence of a “measure scale” and the fact that a choice is made according to that measure scale. Note that with that identification a choice with an “undefinable measure scale” (like if there are too many sorting criteria with eventually uncomparable values) would rather not count as a “competition”. Maybe these cases should then rather be simply called “selections”. Psychological aspects like in particular motivation were also mentioned in the post.

It is important to mention two more aspects which appear in the context of a competition. These are the questions on “how much is at stake” and “to what extend are participants forced into a competition” . These two aspects are usually not independent.

how much is at stake?
If a you train half of your life for winning a running competition at the Olympic games than “a lot is at stake” at that one particular running competition where your perfomance decides wether you have reached that goal or not. If your company needs to “win” one particular contract in order to survive you would say “a lot is at stake”. If you eventually ruin your or others health by taking part in a contest than “a lot is at stake”. If you play a game of scrabble with your buddies than usually there is “not so much at stake”. That is in this case there won’t be any severe changes/losses taking place which are dependent on the outcome of the competition.

Moreover it is usually true that “the more there is at stake, the fiercer the competition”.

In the last randform competition post I wrote about the negative aspects of a too fierce competition. So in order to mitigate the danger of a too fierce competition it is important to assess that for all participants there is “not too much at stake.” Apart from private considerations this is important for the field of science, as well as for business and politics. In an earlier randform post it was in particular mentioned that a fierce competition in science where the selection criteria is wether “a certain result is achieved first” can be problematic. This specific “result-oriented competition” neglects other criteria such as e.g. how elegantly or clearly the investigations leading to a result had been presented, how much the involved methodologies and themes influence other areas, to what extend the involved research encompassed educational and public value, how high the costs were, how equal the working conditions were a.s.o. A fierce business competition may lead e.g. to exploitation, unethical/half criminal behaviour and negligence (see last randform competition post). In politics it may lead e.g. to unfairness.

Note that the reverse conclusion namely “the fiercer the competition, the more is at stake” is not necessarily true. Often psychological components may lead to a fierce competition, where this is wouldn’t be necessary. A sad example of such dynamics was the recent death at the finnish sauna world competition.

If the fierceness of a competition is due to such psychological components it is often easier to mitigate than if there is too much at stake. Here independent observers and helpers can be of great use, moreover in some cases an interference of independent observers should be seen as a duty (like e.g. for the case of the Sauna death). In science this could be for example done by something like an “Ombudsman.”

If there is “too much at stake” then interference is often difficult. Thus one should try to avoid such competitions or -like in sports- impose strong regulations and control.

To what extend are people forced into a competition?

If you choose voluntarily to take part in a competition than you have a “navigation space”, i.e. you can decide for yourself of how “far you would go”, how much you want to invest in the competition etc. If the participaton at a competition is not fully voluntary then things may get nasty, since in such a case you can’t e.g. just quit the competition if it gets too fierce for you.

A participation at a competition can be less voluntarily if there are e.g. economic constraints, which can also be seen as something that “is at stake”. Thus for example architectural competitions may be seen critical if these are more or less the only possible sources of income. That is if you are an architectural office which has a couple of little contracts than you may eventually dare to take part in a midsize competition, however if the overall competition is so big that you “have” to win an architectural competition in order to exist, then again a lot is at stake. Likewise it is problematic if the labour market is getting more and more “competition-oriented” (see e.g. the competitions concerning the job market in software development and research mentioned in the randform post about jobs). This is especially problematic as the overal competition grows due to a declining labour market (see again the randform post about jobs).

Economic constraints are of course not the only possibilities why people are forced into a competition. Like there may be again psychological factors, as they often occur in group dynamics or in a hierarchy. For example power games, which may go as far as to abuse (see also this randform comment) often lead to such psychological enforcements. In some way some wars may be seen in such away. Like during old European wars of succession subjects were often forced by nobles to take part in a succession “competition”/war.

I would like to link to an older randform post comemorating Hiroshima and Nagasaki and in particular mentioning the Monju nuclear reactor which is meanwhile working again and whose new fast breeder prototype is expected to open in 2025 (randform on nuclear technology (part 1 and part 2) and in particular on fast breeders).

My wish to link to this post is not only due to the anniversary of the bombings but unfortunately also due to the recent danger of nuclear pollution in russia caused by wildfires. So e.g. by looking at the german news from novosti (I couldn’t find an english or russian version of this article on novosti) about the fires there is currently the danger that the fires going west and south (to Brjansk, Tula and Lipezk) may release radioactive particles into the air.

The wildfires seem -at least in part- to be due to a reform of forest surveillance/maintanance. From an article in gazeta:

«До реформы законодательства 2007-2008 годов существовала государственная лесная охрана. Леса делились на обходы, которые были закреплены за конкретным сотрудником – фактически это и был классический лесник. Он знал свою территорию, патрулировал ее и любые нарушения пресекал. После реформы лесхозы объединили в лесничества. Нынешние лесничества включают в себя иногда 4-5 лесхозов. При этом число сотрудников сократилось», – рассказывает Захаров. Сейчас, по словам Захарова, лесничий просто не успевает патрулировать огромные территории леса, кроме того, должен выполнять много «бумажной работы».

translation without guarantee:

Until the legislative reforms dating to the years 2007-2008 there existed a state-run forest protection. The forest was partitioned into ward rounds, which were enforced by concrete workers – effectively by the classic forest superintendent. He (what’s with female forest workers?) knew about his territory, was patroling in it and remedy any incident. After the reforms the leskhosi were joined in lesnitshestvos. The present day lesnitshestvos include 4-5 leskhosi. Apart from this the number of workers was reduced, says Sakharov. Today according to Sakharov, the forest workers just don’t succeed in patroling those vast forest territories, apart from this they have to do a lot of “paper work”.

(-> for comparision: optimization reforms underway in nuclear energy)

At this place one should mention that the air pollution caused by the wildfires is already quite harmful to health. Last but not least one can expect that e.g. the levels of mercury in russian air are higher than before. (->see e.g. an older study by the atmospheric modeling research group together with the GKSS Research Center in Geesthacht and the semi-private research project CARIBIC.) However a pollution with radioactive particles would probably much more harmful.

So lets hope that the russian firefighters can keep the fire away !!!

->further videos and infos from russian firefighters
->not sure how good these firefighting songs may help.

What would happen if those plans about a nuclear reactor grid in russia should become future?

Since 01.06.2010 the Quantum Information Theory Group of Prof. Dr. Matthias Christandl is no longer at the LMU Munich but has moved to ETH Zürich.

->outdated randform post

In todays nature magazine there was an article about the “Global phytoplankton decline over the past century”. I have no access to the article however in an article by Markus Becker – a reporter from the german news magazine Spiegel Online – it was reported that since 1950 on average the mass of phytoplankton declined globally by 40%. Since phytoplankton are amongst others a major food source for food webs this affects e.g. the abundance of fish. Moreover phytoplankton are responsible for much of the oxygen present in the earth’s atmosphere. A main reason for the decline of phytoplankton is climate change.

-> related article on randform about oceans and climate change
->related article on randform on microorganisms and oxygen supply
-> see also here
update 30.7.10: You might also want to kick into the subject by reading
about the decline in fish occurence:
->Elizabeth Kolbert on overfishing on Azimuth
-> randform post about fish consumption and nutrition

some koi after the click

According to todays Wall Street Journal the CMBS Market Rises From Ashes of Collapse.

MBS are securities or debt obligations which are backed via pools of mortgage loans. CMBS are MBS for the commercial market. Aggregating loans in a pool is called securization. Very simplified: MBS are a means to deal with mortgage loans (in particular by using pools). The securization of socalled “subprime” MBS (MBS for loans with a high risk) was a major reason for the (still ongoing) financial crisis.

According to the Wall Street Journal article there are now some transactions taking place which may indicate a beginning of a stabilization of the commercial real estate market where one has to say that a good month ago it was said that “For CMBS, ‘Worst Is Yet to Come” and moreover the article says:

The rise in delinquencies on existing CMBS loans also is worrying issuers and investors. Today, more than 8% of $578.6 billion of loans packaged into CMBS are at least 60 days past due. Credit-rater Standard & Poor’s expects that rate to reach as high as 11.5% by year’s end.

MBS are hedged and protected by CDS (credit default swaps). So these may give amongst others some indications about the state of CMBS. The CDS was already mentioned together with other derivatives in this randform post. In this post a source (namely the bank for international settlements (BIS)) was given for the notional value of derivatives. However it is difficult to get much more and more detailled information. Even reports may sometimes be less useful. And it is not only me who is having trouble to find better information but even the SIFMA (Securities Industries and Financial Markets association) writes in their position:

SIFMA supports the use of clearing organizations for standardized transactions and reporting through data repositories for all other OTC derivative transactions. SIFMA believes that every OTC derivatives clearing organization and data repository should be subject to federal regulatory oversight, thereby ensuring that the systemic risk regulator and other federal financial regulators have access to all of the information needed to monitor OTC derivatives markets. It is important for the federal government to create a single set of regulations in order to promote clarity and accountability.

So if I understand this correctly the SIFMA wants not only more clarity but also more regulations for derivatives. This could be e.g. the case because the current notional amount for OTC’s according to BIS (2009) is: 614.674 Trillion US dollars (approx. 600 times million times million or 614.67*10^12), the current notional amounts of CDS which are still outstanding are according to this document of BIS (2009) 36.92 trillion US dollars (i.e. 36.92 * 10^12 US dollars) (list). As a comparision the World domestic product 2009 is 57.94 * 10^12 US dollars. As the randform post explains these amounts can be seen as “insurance securities”, which would need to be paid if all “worst cases” come together. It is clear that such a sum can’t be paid, even not if well-meaning billionares would interfere (see e.g. here or here or here (math remark: 120 billion US dollars are 120*10^9 US dollars, i.e. the OTC amount is 5000 times 120 billion). And it is needless to say that a shaky CMBS market may pose a risk which could make to come together not only a few worst cases.

But unfortunately it seems not everybody is convinced about regulations (scroll to headline: grave mistake), thus in particular this may have been a reason why the G20-London summit reached only an (as wikipedia puts it, see headline: outcome) agreement to “ATTEMPT to bring wider global regulation of hedge funds and credit-rating agencies.”

Last time when I was in Göttingen I found a poster at the math department documenting an art science collaboration between mathematics professors William Thurston, Kazushi Ahara and Sadayoshi Kojima on one side and a team around clothing designer Issey Miyake, notably including chief designer Dai Fujiwara of Issey Miyake (here a link to a partial version of the poster, see also absnews article by Jenny Barchfield). A result of this collaboration is that the Issey Miyake Fall-Winter 2010-2011 ready-to-wear collection is inspired by the geometrization conjecture.

From the poster:

In the mid-October of 2009, Prof. Thurston showed us the detail drawings of the “8 Geometry Link models as Metaphor of the Universe” They inspired us to make the collection based on them, accompanying design study with rope and toile. Considering the body itself as the Universe, we have added our own interpretation of beauty to them. The new perception of the body shared by all the members of the team resulted in the discoveries of new lines and forms, which were then applied to textile, color and detail studies. Thus the new collection has taken shape steadily, revealing its whole picture eventually. To sum up the exchange with Prof. Thurston led us to find a completely new kind of beauty and embody it in clothing. This mission was, as it were, an odyssee to explore the Universe with infinite imaginations.

The geometrization conjecture roughly says (I am not an expert on this) that a three dimensional volume form without boundary (a two dimensional analog of such a form would be for example the surface form (i.e. the “skin”) of a ball or the surface form of a doughnut) can be decomposed into “pieces” which have one of 8 characteristic “geometric structures”, which means roughly that in a small neighbourhood of any such “piece” there is – out of only 8 characteristic ways – one specific way to measure length. A theorem states that any three dimensional (oriented) volume form without boundary can be obtained by cutting a “thick” (that is instead of a rope take a ribbon) link out of a three dimensional sphere. Thus you can characterize special types of three dimensional volume forms (here: “the pieces”) by assigning a link to them. This is – by what I understood sofar- why there are 8 links (or link models) on the poster – they characterize the 8 types of possible “pieces”, which built up three dimensional volume forms without boundary.

Why do they call these 8 links “Metaphor of the Universe”? I can only make wild guesses, which sound rather like science fiction than science: Maybe if you imagine the space of the universe to be eventually such a three dimensional volume then by cutting it into pieces (may be along black hole horizons huh?!) and “measuring distances” (determine a metric) one could make deductions about the actual form of the universe? Or – reversely by making assumptions about the form of the universe (like e.g. that its space is a three sphere) one may get informations about what could be inside black holes…given that one finds all black holes…(this is just a funny joke).

But joking aside – I think they call it Metaphor of the Universe because these simple 8 links may be used to describe quite complicated things.

->wikipedia link math and fiber arts

randform reported already earlier about the decline of music education in Berlin. The last post was about a protest note by well-known musicians who protest against the cutbacks of music education in schools .
Currently you can hear the Vuvuzelas everywhere here in Berlin — they are quite LAUUUUt (this is approximately the noise of a german Vuvuzela) — thus one could easily conclude that the decline of music education already reached the bottom.
But of course the Vuvuzelas are due to the soccer fever and luckily there are still some people left in Berlin who prove that its music education has not (yet) reached the bottom. Here a video snippet from the concert of the Musikalische Werkstätten (a music project with pupils from the Berlin districts of Lichtenberg-Hohenschönhausen, Treptow-Köpenick und Marzahn-Hellersdorf, organized by Landesmusikakademie Berlin) where pupils perform not with Vuvuzelas but partially with similar simple instruments the piece “seven nation army” (here the original) in a very cool style.

During the concert I was a bit concerned that parts of the ceiling in the gym at FEZ, where the concert took place would fall down, however then I told myself that just because the ceiling is deformed (probably due to ball shots, see image) that doesn’t necessary imply that it will fall down. ??

The protest has now a website at http://www.ohne-musik-keine-bildung.de/ and you can leave your signature against the cuts in music education (german newspaper article in Morgenpost about the campaign)