The title mol-ecule, C58H44N6S8, has point symmetry 2 (in the Schönfliess notation C2). The related crystallographic twofold axis bis-ects the central ethane bond while it is parallel to the monoclinic unique axis of the unit cell. The dithiole=C-C=dithiole torsion angle is 103.7 (4)° and the triazole-anthracene moieties adopt a pincer-like conformation. The crystal structure features C-H⋯S and...

In the title compound, [Zn(C(7)H(4)ClO(2))(2)(C(10)H(8)N(2))], the Zn(II) atom is coordinated by two O atoms from two 4-chloro-benzoate ligands and two N atoms from a chelating 2,2'-bipyridine (bpy) mol-ecule in a distorted N(2)O(2) tetra-hedral geometry. The Zn(II) atom is located on a twofold rotation axis, which also passes through the mid-point of the central C-C bond of the bpy ligand. In ...

In this paper we consider the volume distance from a point to a convex hypersurface M ⊂ R, which is defined as the minimum (N + 1)-volume of a region bounded by M and a hyperplane through the point. We describe some of its properties, among them the centroid property, which says that any point is the centroid of its minimal section. We discuss the differentiability of the volume distance and sh...

The title organic-inorganic hybrid salt, (C7H11N2)2[V(C2O4)2O(H2O)]·2H2O, shows a distorted octa-hedral coordination environment for the vanadium(IV) atom in the anion (point group symmetry 2), with four O atoms from two symmetry-related chelating oxalate dianions and two O atoms in trans configuration from a coordinating water mol-ecule and a terminal vanadyl O atom. In the crystal, (001) laye...

We study the least-squares (LS) functional of the canonical polyadic (CP) tensor decomposition. Our approach is based on the elimination of one factor matrix which results in a reduced functional. The reduced functional is reformulated into a projection framework and into a Rayleigh quotient. An analysis of this functional leads to several conclusions: new sufficient conditions for the existenc...

The automatic detection of bilateral symmetry is a challenging task in computer vision and pattern recognition. This paper presents an approach for the detection of bilateral symmetry in digital single object images. Our method relies on the extraction of Scale Invariant Feature Transform (SIFT) based feature points, which serves as the basis for the ascertainment of the centroid of the object;...

The mol-ecule of the title compound, C(14)H(12)N(2)O(4), lies across a crystallographic inversion centre situated at the mid-point of the C-C intra-annular bond. The mol-ecule is not planar, the dihedral angle between the aromatic rings being 50.1 (1)°. The oxime group is in an E position with respect to the -OH group and forms an intra-molecular O-H⋯N hydrogen bond. In the crystal structure, i...

Mol-ecules of the title compound (alternative name: butane-1,4-diyl dinicotinate), C(16)H(16)N(2)O(4), lie on a inversion centre, located at the mid-point of the central C-C bond of the aliphatic chain, giving one half-mol-ecule per asymmetric unit. The butane chain adopts an all-trans conformation. The dihedral angle between the mean plane of the butane-3-carboxyl-ate group [for the non-H atom...

This paper presents an efficient imaging algorithm for Terrain Observation by Progressive Scans (TOPS) mode SAR raw data focusing. First, the use of subaperture is adopted to overcome the aliased Doppler spectra due to progress azimuth beam scanning. Afterwards, range compression and range cell migration correction (RCMC) are individually implemented in each azimuth block with its individual Do...

Speech Segmentation is the measure of the change point detection for partitioning an input speech signal into regions each of which accords to only one speaker. In this paper, we apply two features based on multi-scale product (MP) of the clean speech, namely the spectral centroid of MP, and the zero crossings rate of MP. We focus on multi-scale product analysis as an important tool for segment...