Orbifolds from a metric viewpoint

A Ricci-flat metric on D-brane orbifolds

We study issues pertaining to the Ricci-flatness of metrics on orbifolds resolved by Dbranes. We find a Kähler metric on the three-dimensional orbifold C/Z3, resolved by D-branes, following an approach due to Guillemin. This metric is not Ricci-flat for any finite value of the blow-up parameter. Conditions for the envisaged Ricci-flat metric for finite values of the blow-up parameter are formul...

A Semantic Approach to Urban Graffiti from Semiotics Viewpoint

City is the most complicated and tangible creature of man. There is a critical mutual communicationbetween human and city; and the effect of one’ living environment is beyond question. Graffiti is a new urbanphenomenon, which has drawn attention in light of its connection with protestation culture and street art. Thanks tosymbolism of graffiti, the artists have added mysterious aspects to their...

Plagiarism: a Viewpoint from India

Classification from a Computable Viewpoint

Color-metric pattern-card matching for viewpoint invariant image retrieval

In this paper, viewpoint independent image retrieval by color-metric pattern-card matching is presented. First, a photometric color invariant is proposed measuring a local color property of a pixel and its neighboring pixels while discounting the disturbing influences of shading, shadows and highlights. Color-metric pattern-cards are constructed on the basis of the photometric color invariant i...