Talk:Johannes von Kries

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More info[edit]

He doesn't state his sources, but this "descendent" rakison of JvK lists some good info and has a photo: http://www.psy.cmu.edu/~rakison/rakison_lineage.htm I quote him:

Johannes von Kries (1853-1928)

In the second half of the 19th century Johannes von Kries, a physiologist who was applying probability theory to the evaluation of the effectiveness of new drugs, realised that the computation of probability distributions depends on the classification of symptoms and pathologies into diseases. Confronted with a setting where the crucial uncertainty was the very definition of "events" by the experimenter, von Kries developed the logical foundations of a probability theory where the subjectivity of mental representations may impair the possibility of assigning numerical values to probabilities. With a series of distortions and misunderstandings, von Kries's ideas passed on to Keynes and formed the core of his economics.

Johannes von Kries wrote one of the most philosophically important works on the foundation of probability after P. S. Laplace and before the First World War, his Principien der Wahrscheinlichkeitsrechnung (1886, repr. 1927). In this book, von Kries developed a highly original interpretation of probability, which maintains it to be both logical and objectively physical.

There's a good abstract, also about probability, here: http://www.math.uni-bonn.de/people/fotfs/VI/abstracts.html.

Someone who is into probability should write up these aspects of his work.

Dicklyon 06:31, 22 May 2007 (UTC)[reply]

Waterhammer and blood flow[edit]

There is an interesting recent paper on JvK's contribution to Waterhammer theory and blood flow (http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JHEND8000133000001000001000001&idtype=cvips&prog=normal) by Tijsseling and Anderson and this also gives some idea of the impressive breadth of his work. --Adh30 (talk) 19:48, 27 April 2008 (UTC)[reply]