All posts by admin

Mapfactor Navigator: Convert you POIs

I am currently switching to Mapfactor Navigator mainly to use now also offline Open Street Maps.
The main problem is to get all those old waypoints converted. Unfortunately it is confusing what developers but users are reporting on different forums. MN obviously used different tools at different times and even different directories.

Before you start, get the most recent version Continue reading Mapfactor Navigator: Convert you POIs

 

CC-BY-NC Science Surf accessed 19.01.2026

Warum Radhelmpflicht mehr schadet als nützt

Es ist leider öfters so, dass sich der gesunde Menschenverstand irrt. Vordergründige Logik ist eben doch nur vordergründig. Was habe ich nicht alles an Unsinn gelesen zu dem Thema Radhelm im Zusammenhang  mit dem unsäglichen OLG Schleswig Urteil, das der BGH glücklicherweise nun aufgehoben hat. Unter anderem seien auch die Zahl der Kopfverletzungen in Neuseeland zurückgegangen. Logisch eigentlich, wenn niemand mehr Rad fährt… Im Original liest sich das so

The New Zealand helmet law (all ages) came into effect on 1 January 1994. It followed Australian helmet laws, introduced in 1990–1992. Pre-law (in 1990) cyclist deaths were nearly a quarter of pedestrians in number, but in 2006–09, the equivalent figure was near to 50% when adjusted for changes to hours cycled and walked. From 1988–91 to 2003–07, cyclists’ overall injury rate per hour increased by 20%. Dr Hillman, from the UK’s Policy Studies Institute, calculated that life years gained by cycling outweighed life years lost in accidents by 20 times. For the period 1989–1990 to 2006–2009, New Zealand survey data showed that average hours cycled per person reduced by 51%. This evaluation finds the helmet law has failed in aspects of promoting cycling, safety, health, accident compensation, environmental issues and civil liberties.

Vielleicht nochmal zum Mitschreiben: Radfahren führt zu einer sehr viel höheren Lebenserwartung, selbst unvermeidliche Unfälle eingerechnet. Die Helmpflicht hat die Häufigkeit des Radfahrens halbiert, damit natürlich einige Kopfverletzungen vermieden, aber vor allem die ansonsten durch das Radfahren gewonnene Lebenszeit halbiert.
Was soll man nur zu dem Thema noch sagen wo Einstein schon alles gesagt hat? Ansonsten gibt es vernünftige Kommentare auf Fahradhelm kurz & bündig und Sinn und Nutzen von Fahrradhelmen Das nicht ganz unlogische Fazit – ich bin gegen Helmpflicht aber fahre meistens mit Helm. Ach so, und nirgendwo sind die Menschen so dick wie in Australien:

Australia: the world’s fattest nation. A public health crisis
Australia is now the fattest nation in the world, with more than 9 million adults rated as obese or overweight. (Stewart et al, 2008)
It is predicted that this will lead to 123,000 premature deaths over the next two decades and that an extra 700,000 people will be admitted to hospital for heart attacks, strokes and blood clots caused by excess weight. The costs will exceed AUD 6 billion.

Weitere Kommentare auf http://blog.zeit.de/…/#comments

 

CC-BY-NC Science Surf accessed 19.01.2026

Snow (den) ball effect

Hello Matthias,
….
As it turns out, many people were listening when Edward Snowden mentioned SpiderOak. As a result, we’re seeing the highest rate of signups in our history. This has caused a dramatic increase in server load and customer inquiries. It’s been all hands on deck, around the clock to deliver the kind of service and response we feel is appropriate for such an occasion. By way of managing expectation, we plan to be fully adjusted within the week.

With ‘Zero-Knowledge’,
~ Your SpiderOak Team

I can confirm, that SpiderOak is working well on several platforms at least for internal purposes. The only function that I missed so far is the data upload in the Android client.

 

CC-BY-NC Science Surf accessed 19.01.2026

Overdiagnosis is harming patients

It’s the downside of always improved diagnostic procedures. With science progress and more information available, many information pieces are unvalidated and have a duobtful prognostic and therapeutic value. They even harm patients, possibly by further and unnnecesssary (dangerous) procedures but also increased insurance rates. The problem has been excellently described 2 years ago by Ray Moynihan, Jenny Doust, and David Henry in a BMJ.

Bildschirmfoto 2014-07-22 um 14.46.17

Only recently I learned that there is now even a conference series how top stop harming the healthy. An own pubmed analysis showed zero interest in 1970, then gradually increasing until 2010 up to about 100 papers/year while now doubling in the last 3 years.

 

 

CC-BY-NC Science Surf accessed 19.01.2026

A dual role of IgE

While my most recent hypothesis paper on the origins of IgE is still under review, I discovered a new study in Immunity that says in a nut shell

A growing body of evidence indicates that IgE antibodies and mast cells might serve not only as the effectors of immediate hy-persensitivity in subjects with established sensitivity but also as amplifiers during initial antigen exposure in naive subjects, potentially providing early signals for nascent Th2 cell and anti-body responses.

This fits perfectly to what I am saying , that there seem are self-enforcing & uncontrolled loops of a largely abandoned immune function.

 

CC-BY-NC Science Surf accessed 19.01.2026

Durchgeblättert: Selbstmarketing im Netz

Auf der academics.de Webseite gibt es ein neues Feature über erfolgreiches Selbstmarketing, Kernsatz

Beim Selbstmarketing geht es nicht nur um Medienpräsenz und Aufmerksamkeit. Wissenschaftskommunikation ist auch bei der Vergabe von Fördergeldern wichtiger geworden.

Das ist schnell gesagt, aber nicht bewiesen. Dass es bei der DFG extra Fördermittel für den Bereich Kommunikation gibt, heisst nicht, dass ich mehr Geld für Forschung bekomme wenn ich einen Blog schreibe. Es ist eher anders herum, daß Geld das für die Kommunikation ausgegeben wurde, nicht mehr für Forschung ausgegeben werden kann.
Und dass ein Mädel für ihre Ameisenbären-Expedition nun keinen Drittmittelantrag, sondern Sciencestarter bemüht hat, ist auch keine so recht durchschlagende Argumentation für kontinuierliches Forschungsprogramm. Dann lamentiert der freie ZEIT Online Mitarbeiter noch etwas über fehlende Ausbildungsangebote an der Uni

… Eine Pflicht zur Kommunikation besteht trotz vieler Vorteile natürlich nicht. Jeder Forscher hat auch heute noch das Recht, sich zurückzuhalten und nur zu forschen. Junge Forscher sollten sich aber wenigstens grundlegend mit Wissenschaftskommunikation und Selbstmarketing beschäftigen.

Hoffentlich nicht! Junge Forscher sollen Forschung machen und kein Marketing. Und darf ich mir etwas für Wissenschaftsjournalisten auf academics.de wünschen? Etwas mehr Ahnung von Wissenschaft.

 

CC-BY-NC Science Surf accessed 19.01.2026

What to do with an old Aldi Medion (Dell Inspiron 1520) laptop?

It turned out to be super easy

  • download Elementary OS Luna and create a CD ROM from the downloaded ISO by using OS X’s Disk Utility (Luna is based on Ubuntu 12.04 LTS (“Precise Pangolin”)
  • press F2 at the Medion and let it boot from the CD, then install Luna right away
  • follow the instructions at ubuntuforums.org ( now askubuntu.com ) to install the wireless driver
  • go to to the admin panel, replace the Luna browser with Chrome, get Light-zone and add also Libre Office. Several more changes are also recommended.

I guarantee you a brand new machine 1 hour later that will boot in less than 30s, sleep in another 3s, start Chrome in <1s and render a Facebook page in 1s. Incredible. Something Microsoft was dreaming of for decades. Microsoft even wants us to trash these old XP machines by ending any support. That would be another incredible waste as look and feel with Luna is better than ever.

 

CC-BY-NC Science Surf accessed 19.01.2026

Journal Hijacking

It’s not easy to monitor science output. This may be particular true when it comes to Journal Hijacking. In brief

The Spanish journal Afinidad has been hijacked. Someone has set up a fake website for the journal and is soliciting submissions and payments from the authors in accordance with the gold open-access model.

With the recent quality of some scholarly journals I feel they may have been highjacked too: typing errors, omission of references, major misunderstandings, logical errors, you name it.

 

CC-BY-NC Science Surf accessed 19.01.2026

Non random mating

A new study published in PNAS finds evidence for non-random mating

Spouses are more genetically similar than two individuals chosen at random … our unadjusted GAM result of 0.045 suggests that a 1-SD increase in genetic similarity increases the probability of marriage by roughly 15%. This association is confounded, in part, by intraethnic marriage among whites but we continue to observe GAM even after a se- ries of models designed to eliminate this source of assortative mating.

This comes somewhat unexpected. Unfortunately, the authors missed in their discussion what Carole Ober published about HLA and mate choice in humans

Hutterite mate choice is influenced by HLA haplotypes, with an avoidance of spouses with haplotypes that are the same as one’s own.

So I am a bit confused – more similar in general but still different at the HLA locus??
Reminds me to the old joke, that your male genome is more similar to a male chimpanzee (on a per base statistic) than to your wife.

 

CC-BY-NC Science Surf accessed 19.01.2026

A large inter-individual variation for the efficiency of vitamin D3 supplementation

I believe this already since my first step into the vitamin D field but only now a review shows that

The integration of all these genome-wide data facilitates the identification of the most important VDR binding sites and associated primary 1,25(OH)2D3 target genes. Expression changes of these key genes can serve as biomarkers for the actions of vitamin D3 and its metabolites in different tissues and cell types of human individuals. Analysis of primary tissues obtained from vitamin D3 intervention studies using such markers indicated a large inter-individual variation for the efficiency of vitamin D3 supplementation.

It is a continuous medical malpractice to supplement newborn children with vitamin D without taking into account variation of the inter-individual response, body weight, or any co-medication.

 

CC-BY-NC Science Surf accessed 19.01.2026

Optimizing until we die

The German Ärzteblatt reported recently a study that is directly online accessible and

confirms the existence of safety tipping points for in-hospital mortality using the discharge records of 82,280 patients across six high-mortality-risk conditions from 256 clinical departments of 83 German hospitals. Focusing on survival during the first seven days following admission, we estimate a mortality tipping point at an occupancy level of 92.5%. Among the 17% of patients in our sample who experienced occupancy above the tipping point during the first seven days of their hospital stay, high occupancy accounted for one in seven deaths.

So there is an optimum if NOT every room is occupied and NOT all time spent for filling out forms.

 

CC-BY-NC Science Surf accessed 19.01.2026

Academics – the most status-conscious people in the world?

Edge sends me an email today

The strange thing about academics, which always fascinates me, is that they believe they’re completely immune to status considerations and consider themselves to be more or less monks. In reality, of course, academics are the most status-conscious people in the world. Take away a parking space from an academic and see how long he stays. I always find this very strange when you occasionally get in the realm of happiness research, you get fairly considerable assaults on consumerism as if it’s just mindless status seeking. Now, the point of the matter is, is that academics are just as guilty of the original crime, they just pursue status in a different way.

True? True!

 

CC-BY-NC Science Surf accessed 19.01.2026