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In recent gears, the theory of Rough Sets hos gained pnromount importance and npplicabilitg in diverse onaa of nseareh, especidly in Dota Mining, Knowledge Discovery, ArtijXal htelligence and Information Sgstems nnolysis. Rough Se& have ob0 been w e d in imoging, however, the opplicotion of Rough Sets for color image nnnly-ais hoa yet to be jUly investigoted. In this pnper, on interesting strategy for color imoge segmentotion wing Rough Set Theory has been pn- Rented.A new concept of encnutotion of the histogram, cnlled histon, hm been pmponed for the vinunlization of multi-dimsnmonal anlor informotion in an integrated foshwn, and its npplicabiwg town& boundnty peginn analynin has been nhoum. The hhton rxmwlntes with the upper approzimotion of n ret such that 011 element8 belonging to this set are clossified ns possibly belonging to the same segment, or segments showing nimilar color value. The pmpoaed encnmtation pmviden a dimct meow of segregnting pool of inhomogenow regions into its components. Ezperimental results for various images hove been presented.

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Ac spectroscopic measurements in the range of 10 kHz and 1 MHz are performed on sublimed MoOPc films on ITO glass substrates. The conduction mechanism is believed to be due to hopping of carriers. Using the Cole‐Cole relaxation model, the mean dielectric relaxation time is found to be 942 m̈s at room temperature. The effect of voltage cycling and annealing is studied by optical absorption; the annealed films show lower absorption while the Davydov splittings are absent from the spectra for the voltage‐cycled samples.

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All electron density functional theory with gradient corrections to the exchange and correlation functionals has been used to investigate the properties of small neutral and cationic vanadium clusters. The energetically favorable structures of vanadium clusters are found to be those with maximized average coordinations. The binding energy is found to increase monotonically with the number of atoms in the cluster and it is predicted that a significantly large number of atoms is needed to reproduce the bulk cohesive energy. Except for the neutral vanadium tetramer, the preferred decay channels for all the neutral and cationic clusters contain the vanadium atom. The average magnetic moment per atom is found to oscillate with cluster size, with an upper bound of 0.33 μB in the range from V4 to V9. Results have been compared, in detail, with available experimental and theoretical data.