In this paper, we prove that a graph G with no Ks,s-subgraph and twin-width d has r-admissibility r-coloring numbers bounded from above by an exponential function of r can construct graphs achieving such dependency in r.

In this study, the seismic interaction of surface foundations and underground cavities was investigated. For this purpose, a parametric study of geometric dimensions of the foundation and cavity, their location, and the effect of the interaction between surface foundations and underground cavities was evaluated. The variable parameters include the ratio of the overburden height to the foundatio...

We investigate in this paper the notion of hypertree width as a parameter for bounding the complexity of CSPs, especially those whose constraints can be represented compactly, such as SAT problems. We first identify a simple condition which is necessary for hypertree width to provide better complexity bounds than treewidth. We then observe that SAT problems do not satisfy this condition and, he...

background: st. john’s wort (hypericum perforatum l.) is an important medicinal plant that has been widely used for its antidepressant properties. objective: in this study morphological characteristics variation of populations of h. perforatum were investigated. methods: in this study, different morphological characteristics of 25 h. perforatum populations in iran’s natural habitats were evalua...