### Holger K. von Jouanne-Diedrich

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Holger K. von Jouanne-Diedrich

Works at University of Applied Sciences Aschaffenburg

Attended University of St. Gallen

Lived in Hamburg

1,994 followers|153,514 views

AboutPosts

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Still exists ...

Tucked away in the Bernese Oberland of the Swiss Alps, about 70km southeast of Bern, lies the valley of Lauterbrunnen, regarded as one of the most beautiful valleys in Europe.

Another spectacular natural phenomenon are the Trümmelbach Falls hidden behind a mountain, and consisting of a series of ten glacier-fed waterfalls that carries 20,000 litres of water per second. It drops a total of 200 meters. These thunderous falls have carved corkscrew-shaped gorges inside the limestone mountain. The waterfalls were invisible until 1877, when a tunnel was chiseled into the mountain. Today, you can ride an underground funicular and hike the walkways to see it. In winter, however, the falls are reduced to a trickle.

Tucked away in the Bernese Oberland of the Swiss Alps, about 70km southeast of Bern, lies the valley of Lauterbrunnen, regarded as one of the most beautiful valleys in Europe.

Another spectacular natural phenomenon are the Trümmelbach Falls hidden behind a mountain, and consisting of a series of ten glacier-fed waterfalls that carries 20,000 litres of water per second. It drops a total of 200 meters. These thunderous falls have carved corkscrew-shaped gorges inside the limestone mountain. The waterfalls were invisible until 1877, when a tunnel was chiseled into the mountain. Today, you can ride an underground funicular and hike the walkways to see it. In winter, however, the falls are reduced to a trickle.

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Just one of many functions of the future

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In his circles

383 people

I found some interesting facts last night, via [1], namely that if one counts arXiv categories as journals (which they basically are), then out of the top 20 physics and mathematics journals by h5-index (one of those other pernicious numbers [2]), nine of them are arXiv categories [3] (in fact all entries are physics, not mathematics).

[Yes, this is Google Scholar, as so the usual disclaimers apply. Also, the usual h-index is strongly correlated with the square root of the number of publications--so basically size of journal wins out for comparable quality--but I'm not sure how much this is true for h5-index (which is based on the past 5 years). But for the purposes of discussing metrics that are used in the real world, let us push on]

Even more interesting, perhaps, are the results when one drills down into mathematics categories on the arXiv. Unfortunately the Scholar Metrics don't do a blanket 'mathematics' category; that may be for the best as I'm really interested in

For the subfield 'Geometry', we get numbers 2 and 3 on the list as arXiv categories (AG and DG respectively) and seven out of the top 20 [4]. In 'Algebra' there are eight of the top 20 that are arXiv categories -- the highest ranked is at 4th [5]. 'Mathematical Analysis' picks up five arXiv categories, top ranked at 2nd (above

If we extend to more applied areas, 'Mathematical Optimisation' only gets one arXiv category in the top 20, but it's at the number one slot [7]. 'Mathematical Physics' gets three arXiv categories: two obviously mathematics, and math-ph at the number two slot [8].

One category where no arXiv categories turn up is the blanket 'Pure and Applied Mathematics' [9]. It's a bit hard to judge the content there, since journals like 'Taiwanese Journal of Mathematics' may well be outstanding in applied maths, even when I've never heard of them. It's nice, though that two in the range 10-20 are open access journals.

Lastly, 'Physics and Mathematics (general)' has a couple of arXiv categories, both physics [10]. It only has a handful of mathematics journals, with

It would be interesting so see what a more rigorous approach to this problem would turn up. In particular, if one could calculate an 'impact factor' (IF) for arXiv categories it would be good to show to those who think that IFs are the bee knees. One could count citations either that mentioned the arXiv specifically, that mentioned the arXiv

[1] http://proteinsandwavefunctions.blogspot.dk/2012/04/arxiv-is-for-research-and-journals-are.html

[2] https://plus.google.com/u/0/+DavidRoberts/posts/5scZ4Hvzh5d

[3] http://scholar.google.com/citations?view_op=top_venues&hl=en&vq=phy

[4] http://scholar.google.com/citations?view_op=top_venues&hl=en&vq=phy_geometry

[5] http://scholar.google.com/citations?view_op=top_venues&hl=en&vq=phy_algebra

[6] http://scholar.google.com/citations?view_op=top_venues&hl=en&vq=phy_mathematicalanalysis

[7] http://scholar.google.com/citations?view_op=top_venues&hl=en&vq=phy_mathematicaloptimization

[8] http://scholar.google.com/citations?view_op=top_venues&hl=en&vq=phy_mathematicalphysics

[9] http://scholar.google.com/citations?view_op=top_venues&hl=en&vq=phy_pureappliedmathematics

[10] http://scholar.google.com/citations?view_op=top_venues&hl=en&vq=phy_phygeneral

#publishing #impactfactor #hindex

h5-index is the h-index for articles published in the last 5 complete years. It is the largest number h such that h articles published in 2009-2013 have at least h citations each.hide. h5-median for a publication is the median number of citations for the articles that make up its h5-index.hide ...

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Having been a frequent flyer myself this seems to be a very clever solution!

If Thompson Aero Seating has its way, the days of cramming into the middle seat, engaging in the passive-aggressive skirmish for the armrests, will be long gone. The Northern Ireland seating manufacturer has transformed the infamous center seat into the prime place to park yourself for the duration of your flight, thanks to its staggered Cozy Suite design.

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People

In his circles

383 people

Work

Occupation

Professor

Employment

- University of Applied Sciences AschaffenburgProfessor, present
- AtosExecutive Director
- SiemensPrincipal Management Consultant
- LufthansaProduct Manager
- Skandinaviska Enskilda Banken

Places

Previously

Hamburg - Aschaffenburg - St. Gallen - London - Frankfurt - München

Story

Introduction

"Reality is that which, when you stop believing in it, doesn't go away."

Philip K. Dick

"I have always imagined that paradise will be some kind of library"

Jorge Luis Borges

Jorge Luis Borges

If it seems too good to be true, it probably is.

Education

- University of St. GallenPh.D. (Dr. oec.)
- University of CambridgeEnglish
- University of HamburgBusiness Administration

Basic Information

Gender

Male

Birthday

March 29

Other names

vonjd

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