It is well recognized that the quality of a database application depends critically on its design. To help ensure correctness, clarity, adaptability and productivity, information systems are best specified first at the conceptual level, using concepts and language that people can readily understand. The conceptual design may include data, process and behavioral perspectives, and the actual DBMS...

Continuous digital media such as video and audio are processed and communicated within networked infrastructures. The security of these media has become very important. If the encryption process is part of the video retrieval and playback process, then encryption and decryption must be performed in real time and the speed of the encryption/decryption algorithm matters. We show in this paper tha...

We report the synthesis of medicinal plant, Vernonia amygdalina Del. mediated green copper oxide nanoparticles (VeA-CuO NPs). The presence two absorbance maxima, λmax 1 and 2 at 436 nm 452 nm, respectively confirms a mixture biomolecules surface amalgamated CuO NPs with different morphological features. FT-IR spectra plant leaf extract VeA-CuO confirmed efficient role as capping stabilising age...

Light-dependent conidiation in the filamentous ascomycete, Aspergillus nidulans, is contingent on the allelic state of the velvet (veA) gene. Light dependence is abolished by a mutation in this gene (veAl) , which allows conidiation to occur in the absence of light. We have isolated and characterized six extragenic suppressors of veAl that restore the light-dependent conidiation phenotype. Alle...