In the search for a unified basis for constructing food-web models, the long-standing discrepancy between biomass conversion (BC) and individual survival (IS) modeling has been revitalized by Ginzburg (J. Anim. Ecol. 67 (1998) 325) and Berryman (J. Anim. Ecol. 68 (1999) 1263) in the context of resourceeconsumer interactions. In this work, the principles underlying the confronting approaches are...

Functional dependencies restrict the potential interactions among variables connected in a probabilistic network. This restriction can be exploited in qualitative probabilistic reasoning by introducing deterministic variables and mod­ ifying the inference rules to produce stronger conclusions in the presence of functional rela­ tions. I describe how to accomplish these modi­ fications in qualit...

We study the decidability problem for metric and layered temporal logics. The logics we consider are suitable to model time granularity in various contexts, and they allow one to build granular temporal models by referring to thènatural scale' in any component of the model and by properly constraining the interactions between diierently-grained components. A monadic second-order language combin...

the conformational analysis of the organic compounds specially the biologically active natural products has attracted the consideration of different research groups. therefore, in the present study the mp2/6-311+g(d,p)//b3lyp/6-311+g(d,p) level of theory was used to study the conformations of dapdiamide d. the identity of interactions in selected conformers was studied using atom in molecule ap...

in traditional bazaars social interactions, parallel to economic and movement interactions, created a mixed urban space which was dynamic, lively and attractive to the audience. however, modern shopping centers and shopping malls are economy focused and void of variety of urban spaces like traditional bazaars. the presence of public open spaces and urban squares undetectable from traditional ba...