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Malin Christersson
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Malin Christersson

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Elsevier news

Hard to believe I know, but a lot of people are getting cross with Elsevier again. Elsevier have recently revised their policy about sharing of articles, which can be examined in a web page written by Alicia Wise that goes by the superbly ironic title, "Unleashing the power of academic sharing." (I think the right word for a title like that has to be "wisecrack".) It's here:

  http://www.elsevier.com/connect/elsevier-updates-its-policies-perspectives-and-services-on-article-sharing

One of the highlights is that after publication a subscription article can be shared "As a link anywhere at any time." This policy is explained on another Elsevier page as follows: "If you are an author, please share a link to your article rather than the full-text. Millions of researchers have access to the formal publications on ScienceDirect, and so links will help your users to find, access, cite, and use the best available version." (The relevant page is this one: https://www.elsevier.com/about/policies/article-posting-policy#published-journal-article.)

I actually don't find Elsevier's policies all that unreasonable. For one thing, they are pretty liberal about preprints in mathematics, allowing you to post to the arXiv the version that takes into account comments by the referees. However, it is notable that they don't allow just any old repository, so they are clearly making special cases for certain subjects, while making sure that freely available preprints don't become the norm in the big-money subjects like biology and medicine. But even that is reasonable if you look at things from Elsevier's point of view: they have a business model that would be seriously threatened if you could get the information you wanted without subscribing to their journals. But their critics are also reasonable from their point of view: it is not good to have large amounts of the scientific literature behind paywalls. Also, Elsevier's defence of its policy -- that Science Direct is a wonderful resource that helps you find the best version of the article -- is ludicrous.

Basically, as everyone knows, we are seeing a clash between the future and the past. The future is surely destined to win eventually, and the main question is how much money the past can rake in before it does.

On another topic, I missed this when it happened, but on the 12th of May the Cost of Knowledge boycott passed the 15,000 mark. It now stands at 15039.
Statement against Elsevier's sharing policy. Organizations around the world denounce Elsevier's new policy that impedes open access and sharing. On April 30, 2015, Elsevier announced a new sharing and hosting policy for Elsevier journal articles. This policy represents a significant obstacle to ...
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Statliga offentliga utredningar med Morgan Johanssons och Beatrice Asks kvalitetsstämplar utgör inte adekvata beslutsunderlag för riksdagen.
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Amelia Andersdotter skriver: "Sedan 2012 har det publicerats nästan 2 500 sidor utredning om hemliga tvångsmedel som samtliga lider av samma systematiska brister. De utreder inte förslagen som läggs, och det som utretts leder inte till förslag. Vi kan inte längre lita på Justitiedepartementet."

+Piratpartiet
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+American Patriot I suppose I live in some sort of filter bubble in which the threats of a surveillance society is an important issue, and outside that bubble most people don't care. Which is a rather depressing thought.
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It's everywhere.
:D
 
A few more instances of the golden ratio and the golden spiral in nature, technology, and the arts, almost as convincing as the usual suspects.
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I thought xkcd 1488 brought us to the conclusion that this is total BS. [ https://xkcd.com/1488/ ]
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Mapping pixels from a Euclidean to a hyperbolic polygon

(follow up on my previous post http://goo.gl/9kEWOz )

In my original hyperbolic tiling of images, an image is cropped to a hyperbolic polygon that is then reflected repeatedly. I got a suggestion from +Kerwin Vincent  to distort the first image as well, and distorting all tiles is a better idea than treating one of the tiles like some sort of Euclidean alien in a hyperbolic universe. Distorting the first tile takes many extra calculations, and the result is only visually noticeable at the edge of the polygon, but as a result: All tiles are equal (but one tile is more equal than the others)!

Make Hyperbolic Tilings of Images: 
http://www.malinc.se/m/ImageTiling.php
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I got the scaling right. It's a rather cool effect. 
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The art of making programming errors

Some programming errors are more appealing than others.
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+Roice Nelson wow! You really could decorate your living room with beautiful computer bugs!
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!
 
What is the big bad publisher Elsevier doing now?

1) Selling blank pages. 

That's right: some of their articles, costing $30 to access, consist solely of one blank page!  You can see one here:

https://twitter.com/fxcoudert/status/521675319322112000

It's a paper called 'Verified synthesis of zeolitic materials'.  Just a blank page.

When these pages were discovered, Elsevier deleted them.  That's sort of weird in itself: deleting nothingness so people can't see it.

2) Exempting themselves from their own copyright agreements. 

You can pay them to make your papers open-access.  In return you get a Creative Commons copyright which says nobody can charge money for them. 

But if you read the fine print, which is hidden somewhere else, you'll see that Elsevier excludes itself from this restriction! 

This lets them charge money for open-access papers.  Read the story here:

http://www.laurenbcollister.com/well-well-look-whos-at-it-again/

3) Letting editors publish hundreds of their own papers in journals they edit. 

You may remember the case of a physicist who did this in the Elsevier journal Chaos, Solitons and Fractals.  

But now a medical researcher named Johnny Matson has been caught publishing hundreds of his own papers in two Elsevier journals he edits: Research in Developmental Disabilities and Research in Autism Spectrum Disorders

That means nobody can really trust these papers to have been properly refereed!  And this matters more for autism than for theoretical physics.  Nobody will get sick from a bad theory about fractal spacetime.

Check out the story here:

http://deevybee.blogspot.com/2015/02/journals-without-editors-what-is-going.html

and join the Elsevier boycott if you haven't yet:

http://thecostofknowledge.com/
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Hello ((( ^ ‿ ^ ))) friend, already April`15!!  

May the angels protect you!!
May the sadness forget you!!
May goodness surround you!!
Happy Easter!!! +Malin Christersson 
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This is an interesting analysis. The analysis is not about security keys but about people, and as  +Jürgen Christoffel puts it:  about "bureaucratisation of the Internet".
 
"""Much like the patent system and the Secure Boot system, an HTTPS requirement means that you have to check with a bureaucrat before you post code you wrote to the world. A kid who wants to ditch WordPress and make up his or her modern and hopefully more fun incarnation of the Caltech Divinity School now has more hurdles in the way."""

#NewWeb
Mozilla, the foundation that maintains Firefox, has announced that it will effectively deprecate the insecure HTTP proto…
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+Nico Gerrits I agree, the comments are interesting as well.
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A bottle opener would be nice.
 
Hyperbolic Buttons
     
+Malin Christersson has made a Javascript version of her hyperbolic tilings tool, which means that you can now simply drop your picture on her web page and make your own hyperbolic art – from which you could make a button, bottle opener or beermat!
     
Here: https://goo.gl/yCqdhh

Buttons: http://goo.gl/ZNzTdd
(example only – there exist other services)

There is a relationship between certain fractals and these hyperbolic tilings.

Few people know, however, that fractal pictures like this one are intimately related to tilings of what mathematicians call hyperbolic space. One such tiling is shown in figure 1a below. In contrast, figure 1b shows a tiling of the ordinary flat plane. In this article, which first appeared in the Proceedings of the Bridges conference held in London in 2006, we will explore the maths behind these tilings and how they give rise to beautiful fractal images.

More here (see animations): https://goo.gl/11VLpo

Artistic Hyperbolic Geometry Tutorial: http://goo.gl/e0jPBY   

From...

Math and the Art of M. C. Escher: http://goo.gl/EZzLRz

Snowflake wallpapers: http://goo.gl/S2P6QD
Courtesy of +Alexey Kljatov.
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Beautiful!
 
algebra + droste 2d + fraktal + Hyperbolic Tilings
Malin Christersson: Hyperbolic Tilings http://www.malinc.se/m/ImageTiling.php
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Aha, thanks +Malin Christersson!
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Hyperbolic Tilings of Images

I have remade an old program for making hyperbolic tilings to a Javascript version. An image is cropped to a hyperbolic polygon in the center of the disc. That polygon is then reflected repeatedly to fill out the tiling. 

When an image of a face is reflected it gets distorted (from an Euclidean point of view). Depending on the tiling, the distortions range from “slightly strange” to grotesque. The tiling of Poincaré is “slightly strange” (I hope) while the hyperbolic self-portrait is creepy (at least according to my kids).

Make Hyperbolic Tilings of Images: http://www.malinc.se/m/ImageTiling.php
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Cool Thanks! :)
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It's in Spanish, with English subtitles.
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+Michelle Beissel I agree, I smiled through the entire presentation. :)
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In her circles
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Lund
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mathematics - computer science - digital freedom
Introduction
My posts are mainly about mathematics and programming, from an educational point of view. I am currently pursuing a PhD in educational research. My research is about kids learning how to program, and the math included when doing so.
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