The concept of free as in "free group" is generalized to any first order theory. An interesting class of homomorphisms between models is discussed. Relations between model theory and abelian categories are discussed speculatively. This paper represents an incomplete study…

A program, some TECO macros, and some small modifications to existing systems software have been written, called PRO, whose purpose is to reduce the large number of control languages and system programs it has been necessary to know about and…

This paper demonstrates that it is possible to generate a reasonably accurate coordinate system on randomly distributed processors, using only local information and local communication. By coordinate systems we imply that each element assigns itself a logical coordinate that maps…

The objectives of this work were: (i) identified the risk areas of landslides, flooding and sea level rise and social vulnerabilities in different scales of analysis; (ii) analyse the risk perception of people living in this risk areas; (iii) found…

Nos preocupamos mucho de la enseñanza de la bioética y de las mejores metodologías para conseguir trasmitir conocimientos, actitudes y valores, pero no hemos reflexionado suficientemente en la importancia de los valores éticos en la educación para la salud, y…

The regime of floods and droughts in the Pantanal wetlands determines the distribution and abundance of the wildlife, vegetation and ecological processes. Cattle ranching and fisheries, the main economic activities in this floodplain, are extremely influenced by and depend on…

O presente trabalho relata a experiência desenvolvimento e aplicação, no âmbito de um projeto de pesquisa, de um modelo de organização e representação do conhecimento sobre os processos de intensificação agropecuária, contextualizados por observações empíricas em regiões produtoras de commodities…

Žinių samprata yra sudėtinga, įvairi ir daugiaprasmė. Moksliniu požiūriu žinių prigimtį ir esmę jau keletą dešimtmečių tyrinėja įvairių sričių mokslininkai, tačiau iki šiol nėra sukurtos visuotinai pripažintos žinių potencialo vertinimo metodikos, vartojamos skirtingos sąvokos, nesutariama, kokie veiksniai yra esminiai vertinant…

A notable contribution to the knowledge of relative incidence and cause of mortality in pigs was made by an extensive survey carried out by the Ministry of Agriculture, Fisheries and Food, Veterinary Investigation Service in England. [...]

The following information, as revealed in these studies, is claimed to be a contribution to knowledge. A bacterium and a fungus identified as a Pseudomonas sp. and a Penicillium sp. were isolated by the soil perfusion enrichment technique, and are…