Half a century of a work defining a landmark in Discrete Event Dynamic Systems theory is worth underlining. This invited contribution, of festive character, albeit I fear inadequate, is a modest tribute to the memory and work of Carl Adam Petri. It was considered convenient to remember some of the personal contacts we had with him. The price is a certainly biased view.

This paper describes the idea of using context aware soft furnishing for decorations. Textile has the ability to easily change the experience of an environment. This quality combined with the dynamics of ubiquitous computing and context awareness creates an interesting design space to investigate. The examples we show, a tablecloth and a drapery, are designed for use on festive and social event...

Court balls, organized in Serbia the 19th century at princely and royal courts, modeled on European ones, were labeled for a certain class of society, which gave these social events festive note reputation. By coming to people had already integrated into highest cultural ranks by adopting new elements behavior they significantly differed from other categories residents. Therefore, balls rank im...

A recent Minerva article (BMJ 2017;356:j54, doi:10.1136/bmj. j54) on antihypertensives and acute kidney injury inaccurately stated the results. The statement should have said “Compared with patients without chronic kidney disease, having stage 4 chronic kidney disease increased the risk of acute kidney injury by a factor of 6-8 times (independent of antihypertensive use).” Although the risk of ...

Bernstein et al. have proposed a new permutation,Gimli [1], which aims to provide simple and performant implementations on a wide variety of platforms ranging from the AVR ATmega and ARM-Cortex to the Intel Haswell. In a festive spirit of retrocomputing, this brief paper reports such a simple and (somewhat) performant implementation on the almost Third-Age-of-Middle-earth-dating TRS-80.