Zdeněk Kalkus, Kuba, Skrytá perla Karibiku

In Memoriam Attila Kuba (1953-2006)

Melanins and Lipids in Lycoperdon Perla Tum Fruit Bodies

After sequential degradation with sodium persulphate and potassium permanganate, the characteristics of the dark pigments from the soil gasteromycete Lycoperdon perlatum were described. Several aromatic acids (phenolic and benzenecarboxylic) were detected by glc-ms of the degradation products, but the aliphatic content of these polymer fractions was predominant, containing a high proportion of ...

Managing and Using Context Information within the PerLa Language

Self-adaptability in pervasive real-world applications can be achieved by adopting a context-aware middleware. In this paper, we propose a context-management extension to the PerLa language and middleware, which allows for: (i) gathering of data from the environment, (ii) feeding this data to the internal context model and, (iii) once a context is active, acting on the relevant resources of the...

Towards autonomic pervasive systems: the PerLa context language

The property of context-awareness, inherent to a Pervasive System, requires a clear definition of context and of how the context parameter values must be extracted from the real world. Since often the same variables are common to the operational system and to the context it operates into, the usage of the same language to manage both the application and the context can lead to substantial savin...

Inference and Design in Kuba and Zillij Art with Shape Grammars

We present a simple method for structural inference in African Kuba cloth, and Moorish zillij mosaics. Our work is based on Stiny and Gips’ formulation of “Shape Grammars”. It provides art scholars and geometers with a simple yet powerful medium to perform analysis of existing art and draw inspiration for new designs. The analysis involves studying an artwork and capturing its structure as simp...