In the days of the Austro-Hungarian compromise was reached to hold a two-headed crown with two heads: one in Vienna, and another, in Budapest. But there was a third metropolis to rival them, at least intellectually, and this was Prague, the capital of Bohemia. There were other vital cities, but smaller, and then would be relevant to phenomena such as the birth of the great School of Logic, the Lvov and Warsaw, or other, as Brünn (Brno), Vratislav, Bucuresti, etc. In many of them would radiate the thought that trigger the scientific-philosophical scene for a long time, even to this day.

In this note, we prove that if φ and β are any two convex functions and f is the Riemann-Stieltjes integrable on [a, b] such that β(b)-β(a)=1, then \n φ(∫_a^b fdβ)≤ ∫_a^b 〖φ(f)dβ〗

This study has made an attempt to identify Iranian researchers’ problems of writing for publication in English journals and their writing/learning strategies they used to overcome these problems. For this purpose, interviews were conducted with sixteen Iranian researchers of science and engineering fields from Shahid Bahonar University. Findings showed their problems were as follows: they had limited vocabulary, they did not have knowledge of advanced grammatical structures, they could not write coherent and cohesive texts and interference of their mother tongue. Learning/writing strategies they used were as follows, reading more and more English papers, writing in mother tongue and then translates it, writing English articles, and noting down vocabulary and expressions.