# Monthly Archives: November 2013

## Mathematical Competitive Game 2013-2014

### Checking an Industrial Process

pdf

The “Mathematical Games“, jointly organized by French Federation of Mathematical Games (FFJM) and Société de Calcul Mathématique (SCM), have existed for five years; the previous ones were:

• In 2008-2009, conception of a bus transportation network in a city, in partnership with Veolia Transport;
• In 2009-2010, conception of an electricity distribution network, in partnership with RTE (Réseau de Transport d’Electricité);
• In 2011-2012, search for the best itinerary by a car, in partnership with the newspaper Auto Plus;
• In 2012-2013, fighting forest fires in Siberia, in partnership with the Paris Firemen Brigade.
• In 2013-2014, checking an industrial process

They deal with the resolution of a “real life” problem, that is a problem of general concern, but simplified in its mathematical contents. Still, the resolution typically requires several months of work.

Candidates may compete individually or as groups, for instance high school classes, or college students, or university students, preparing a “memoir” for the end of their studies.

Two categories of prizes are given:

Individual prizes:

• For the winner: 500 Euros
• For the second: 200 Euros
• For the next three: 100 Euros each.

Prizes for groups:

• For the winner: 500 Euros
• For the second: 200 Euros
• For the next three: 100 Euros each.

The total amount of prizes is therefore 2 000 Euros. The best solutions are published on the web site of FFJM, on the web site of SCM, and on the web sites of the partners. The official announcement of the results and the ceremony for prizes occur during the “Salon de la Culture et des Jeux Mathématiques” (Fair for Mathematical Culture and Games), which is held in Paris, each year, during the month of May.

The winners, previous years, gained considerable notoriety, both in the press and television in their respective countries.

## Altmetric Score

Extending the Range of the Inductionless Magnetorotational Instability by Oleg Kirillov and Frank Stefani

Source: Altmetric   pdf

• The Altmetric score 26.25 puts the article in the top 5% of all articles ranked by attention.
• Very good compared to other articles of same age & journal (89th percentile)
• Very good compared to articles of the same age (95th percentile)
Compared to all articles in Physical Review Letters

So far Altmetric has tracked 4,698 articles from this journal. They typically receive more attention than average, with a mean score of 6.4 vs the global average of 4.0. This article has done particularly well, scoring higher than 96% of its peers.

All articles of a similar age

Older articles will score higher simply because they’ve had more time to accumulate mentions. To account for age we can compare this score to the 54,326 tracked articles that were published within six weeks on either side of this one in any journal. This article has done particularly well, scoring higher than 95% of its contemporaries.

Other articles of a similar age in Physical Review Letters

We’re also able to compare this article to 29 articles from the same journal and published within six weeks on either side of this one. This article has done well, scoring higher than 89% of its contemporaries.

All articles

More generally, Altmetric has tracked 1,498,915 articles across all journals so far. Compared to these this article has done particularly well and is in the 97th percentile: it’s in the top 5% of all articles ever tracked by Altmetric.