dna sequencing is the most conclusive method for emm (m protein gene) typing of streptococcus pyogenes. this method is not a feasible approach in developing countries where streptococcal infection is widespread among adults and children. alternatively the pcr-rflp has the potential for rapid screening of different types of s. pyogenes. to document the emm type distribution of s. pyogenes in a g...

the aim of current study is to describe clinical similarities and differences between atopic and non-atopic asthma in children. in a cross-sectional study, 95 asthmatic children (75 allergics and 20 nonallergics) were included in the study. demographic, clinical, and familial history were compared between two groups. there was no significant differences between variables like sex, age of onset ...

Now that complex Agent-Based Models and computer simulations spread over economics and social sciences as in most sciences of complex systems -, epistemological puzzles (re)emerge. We introduce new epistemological tools so as to show to what precise extent each author is right when he focuses on some empirical, instrumental or conceptual significance of his model or simulation. By distinguishin...

Static allometries, the scaling relationship between body and trait size, describe the shape of animals in a population or species, and are generated in response to variation in genetic or environmental regulators of size. In principle, allometries may vary with the different size regulators that generate them, which can be problematic since allometric differences are also used to infer pattern...

Three theories of knowledge transfer -analogy, knowledge compilation, and constraint violation -were tested across three transfer scenarios. Each theory was shown to predict human performance in distinct and identifiable ways on a variety of transfer tasks. Results support the hypothesis that there are multiple mechanisms of transfer and that a general theory of transfer must incorporate each m...