randform

I am still collecting data on global employment in order to better investigate the replacement of human work by machines. Unfortunately it turned out that the International Labour Organisation (ILO), which holds most of the original data restructured their IT-sector. This means in particular that some older data can’t be reproduced any more. Above you can see that the worldwide employment went down on average since the nineties. I keep the data now here locally on our account as a copy from ILO in order to keep the findings reproducible. The data source as well as the source code for extracting it (GPL) are here. As always: if you spot some mistakes please let me know.

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This concerns a discussion on Azimuth. I found that the temperature anomaly curve, which describes the global combined land [CRUTEM4] and marine [sea surface temperature (SST)] temperature anomalies (an anomaly is a deviation from a mean temperature) over time (HADCRUT4-GL) has a two-year periodicity (for more details click here). The dots in the above image shall display, why I think so. The dark line drawn over the jagged anomaly curve is the mean curve. The grey strips are one year in width. A dot highlights a peak (or at least an upward bump) in the mean curve. More precisely there are:

18 red dots which describe peaks within grey 2-year interval
5 yellow dots which describe peaks out of grey 2-year interval
(two yellow peaks are rather close together)
1 uncolored dot which describes no real peak, but just a bump
4 blue dots which describe small peaks within ditches

One sees that the red and yellow dots describe more or less all peaks in the curve (the blue dots care about the minor peaks, and there is just one bump, which is not a full peak). The fact that the majority of the red and yellow dots is red, means that there is a peak every 2 years, with a certain unpreciseness which is indicated by the width of the interval.

Upon writing this post I saw that I forgot one red dot. Can you spot where?

Especially after doing this visualization this periodicity appears to me meanwhile so visible that I think this should be a widely known phenomenom, however at Azimuth nobody has heard yet about it. If its not a bug then I could imagine that it could at least partially be due to differences in the solar irradiance for northern and southern hemissphere, but this is sofar just a wild guess and would need further investigations, which would cost me a lot of (unpaid) time and brain. So if you know how this phenomen is called then please drop a line. If its not a bug then this phenomen appears to me as an important fact which may amongst others enter the explanation for El Niño.

“In flagranti”, image from the art series “detective stories” by Massimo Mascarpone

This is just a a very brief follow-up to my last post in which I was looking at the market sizes of virtual assets.

techdirt has a blog post in which it is described that apparently the NSA uses gamification for making the use of the XKeyscore system more appealing.

I guess although here a game is used as an introduction for a virtual application this type of game wouldn’t fall into the free-to-play category, from superdataresearch:

One important trend in this context is the emergence of free-to-play or virtual goods revenue model. It allows the next generation of gamers to try a game before they commit any money, offering them a smooth introduction to games rather than asking for $50-$60 at the door.

Title: “Kreative Mode beim Bedrockabgrundste-in”, oil on canvas, artist: Mudda Prahler

There was recently a post on Gamasutra with the title: Titanfall: Why Respawn is punishing cheaters. The computer game Titanfall is a First person shooter that can be played with a couple of people in one environment. Wikipedia describes it as follows:

Players fight either on foot as free-running “Pilots” or inside agile mech-style walkers called “Titans” to complete team-based objectives[2][3] on a derelict and war-torn planet[4] as either the Interstellar Manufacturing Corporation (IMC) or the Militia.[5]

I don’t know Titanfall (In general I have been playing first person shooters rather rarely) but what apparently happened was that there where too many people cheating in the game.

In the post it isn’t really described what exactly is implied by cheating, but what I refer from the “punishment” announcement, I think what was happening was that some people used game bots and in particular socalled aimbots, which are software solutions which make shooting easier in such a game. From the Titanfall announcement:

You can play with other banned players in something that will resemble the Wimbledon of aimbot contests. Hopefully the aimbot cheat you paid for really is the best, or these all-cheater matches could be frustrating for you. Good luck.

I was asking myself though wether this action is part of some viral marketing campaign. That is that some cheaters could think that it could be way cooler to “win the Wimbledon of aimbot contests” rather than the usual game. Given that Titanfall had however performance problems which as it seems where due to overloaded game servers and connections, it doesn’t though look as if this would improve with aimbot contests.

In this context:

In a citation about a report by a tech- and investment-advisory firm in the time article: The Surprisingly Large Energy Footprint of the Digital Economy

In his report, Mills estimates that the ICT system now uses 1,500 terawatt-hours of power per year. That’s about 10% of the world’s total electricity generation

The New York times article: Power, Pollution and the Internet remarks the following about e.g. US data centers:

Nationwide, data centers used about 76 billion kilowatt-hours in 2010, or roughly 2 percent of all electricity used in the country that year, based on an analysis by Jonathan G. Koomey, a research fellow at Stanford University who has been studying data center energy use for more than a decade. DatacenterDynamics, a London-based firm, derived similar figures.

A summary of the last IPCC report about climate change and global warming.

and:

In Berlin there is currently the International games week Berlin.

numberlock: If you find all the mines at once and in the right order you may eventually get in.

There is currently an interesting discussion about secret services and their relation to mathematicians at the mathblog n-category cafe.

Today is The Day We Fight Back against mass surveillance. “Fighting back” means here that you may endorse the rather sound formulated International Principles on the Application of Human Rights to Communications Surveillance like by leaving your name and email adress and/or that you may display a banner on your website as a sign of your disagreement with mass surveillance.

-> related: randform article on surveillance

A new video of one of Tims recent music projects (a video about the ladder filter is here). In the video he explains the construction of a spring reverb:

A detailed description on how to build the spring reverb can be found on the astlab page.

A soundtrack on soundcloud of how the spring reverb sounds:

Tim and a bit of his music projects will eventually appear in a new film by film maker Ekaterina Eremenko. That is we had a film team from Moscow here at home. But it is sofar not clear wether the material will be used.

Ekaterina Eremenko, who has also studied math, received recently much attention for her film colours of math (trailer) featuring amongst others the rather well-known mathematicians Cedric Villani, Anatoly Fomenko, Aaditya V. Rangan, Günter Ziegler, Maxim Kontsevitch and Jean-Michel Bismut.

I don’t know if this is a new trend but I found incidentally more recent films where features of the life of mathematicians are documented. Like at the website of the “Higher Algebra section” at Moscow State University I found interviews with V. N. Latyshev talking About academic mathematics (in russian) and about Reminiscences of A. A. Markov (in russian) made by Andrei Verovkin who features a whole series of interviews with scientists.

In this context a short note for those who are in or are planning to go to visit Berlin: There were/are currently music festivals for more modern music taking place in Berlin, which enhance the usual club life or on the more classical level regular events like e.g. the weekly series “Unerhörte Musik im BKA”. One was the Ultraschall Festival and one is the ctm festival, which is in cooperation with the festival for art and digital culture “transmediale”. The transmediale theme of this year is “afterglow:”

The conference takes afterglow as a metaphor for the present condition of digital culture, examining the geopolitical, infrastructural and bodily consequences of the excessive digitisation that has taken place over the course of the last three decades.

alcohol may alter brain states

For those who are interested there is a discussion about determinism and freedom, free will, privacy etc. at the blog backreaction following a post with the title: 10 Misconceptions about free will, which I found problematic. If you want to know more you may read my comment also after the klick.

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randform wishes all it’s readers happy holidays and a good new year 2014!

rest of a silvester rocket in a tree in the outskirts of Berlin

We preferred to stay in the outskirts of Berlin on New Years Eve. Even in the outskirts there is still enough fireworks. An aquaintance of us lost a couple of years one eye by just walking on new years eve on a street. If you still want to experience new years eve in Berlin then since there are no noise barriers and roofs against rockets and bangers on the street then our advise is to at least use some hearing protectors if that doesn’t give you too much head aches and safety glasses when moving around on the streets of Berlin on that time of the year.