Bixby and Cunningham showed that a 3-connected binary matroid M is graphic if and only if every element belongs to at most two non-separating cocircuits. Likewise, Lemos showed that such a matroid M is graphic if and only if it has exactly r(M) + 1 nonseparating cocircuits. Hence the presence inM of either an element in at least three non-separating cocircuits, or of at least r(M) + 2 non-separ...

The various methods that are used for the study of tumor growth can be classifiedinto three groups-the pictorial, the statistical, and the graphic. In the pictorial method, silhouettes are employed to represent the growth of the tumor. In the statistical method, the ultimate size of the tumor, the number and size of metastases, and other criteria of growth and malignancy are analyzed statistica...

We introduce a new 2D graphic representation of DNA sequences considering codon degeneracy. Derived from the graphic representation, a multi-component vector is proposed to characterize quantitatively DNA sequences. Then we use the graphic representation and the vector to perform the phylogenetic analysis on two datasets, the complete coding sequences of the  -globin genes of 11 species and th...

In contrast to the existing approaches for document analysis and understanding this paper represents a system that considers a logical role for graphic content in predominantly textual, born digital PDF documents. This work was inspired by the idea of using structural graphic objects in order to clarify the logical layout even of complex mostly graphic documents. Based on visual cognition, geom...