In the title adduct, C(7)H(5)NO(4)·0.5C(6)H(6)N(4), the complete biimidazole molecule is generated by a crystallographic inversion centre. In the crystal, N-H⋯O and O-H⋯N hydrogen bonds connects the 4-nitro-benzoic acid and 2,2'-biimidazole units, affording multi-dimensional frameworks with graph-set descriptor R(2) (2)(9).

In the title compound, C(7)H(14)O(2), co-operative eight-membered homodromic rings of O-H⋯O hydrogen bonds connect the mol-ecules into strands along [100]. According to graph-set analysis, the descriptor of these cycles is R(4) (4)(8). The cyclo-pentane-ring adopts an envelope conformation ((C4)E).

This paper presents a method to track human body parts in 3D video sequences for character animation production. A voxel-based Local Shape Histogram descriptor is first extracted as geometric features. A graph-based Multiple Objects Tracking scheme is then used to track these features. Finally, the evaluation against a publicly available real 3D video database demonstrates the performance.

The title compound, C(22)H(24)O(5), consists of two substituted benzene rings linked by an ethyl acrylate group. The dihedral angle between the two benzene rings is 58.39 (7)°. The crystal packing is governed by two C-H⋯O inter-actions, one of which forms centrosymmetric dimers with a graph-set descriptor of R(2) (2)(18).

In this work, we present a novel image and mesh processing pipeline for the computation of simplified Reeb graphs for closed triangle meshes of the human striatum extracted from 3D-T1 weighted MR images. The method uses active contours for computing the mesh partition and the simplified Reeb graph. Experimental results showed that simplified Reeb graphs, as obtained by our pipeline, provide an ...

This article proposes an approach to the generation of guided tours over indexed information resources on user demand. It represents an alternative to more sophisticated hyperdocument generation techniques, in cases where very few is known about resource contents. The information space is modelled as a hypergraph of resource and resource descriptors. A spanning tree of descriptors is extracted ...