Pubudu Madhawa Silva

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With the ever increasing availability of the Internet and electronic media rich in graphical and pictorial information - for communication, commerce, entertainment, art, education - it has been hard for the visually impaired community to keep up. We propose a non-invasive system that can be used to convey graphical and pictorial information via touch and(More)
We propose a new algorithm for the inference of minimum size nite state machines from training set data. Our approach is based on a well known search algorithm proposed by Bierman, but it incorporates a set of techniques known as dependency directed back-tracking. Although these techniques have already been used in other applications, we believe we are the(More)
Common controls for photographic editing can be difficult to use and have a significant learning curve. Often, a user does not know a direct mapping from a high-level concept (such as " soft ") to the available parameters or controls. In addition, many concepts are subjective in nature, and the appropriate mapping may vary from user to user. To overcome(More)
In previous work, we have proposed a dynamic, interactive system for conveying visual information via hearing and touch. The system is implemented with a touch screen that allows the user to interrogate a two-dimensional (2-D) object layout by active finger scanning while listening to spatialized auditory feedback. Sound is used as the primary source of(More)
A liquid chromatography method for evaluating the stability of Nystatin (Nys) in an ointment was developed and validated, since the traditional pharmacopeial microbiological methods are unable to indicate stability. The stress experiments showed that Nys was found to significantly degrade in alkaline and acidic conditions and also under oxidative stress.(More)
We propose a new algorithm for the inference of minimum size nite state machines from training set data. Our approach is based on a well known search algorithm proposed by Bierman, but it incorporates a set of techniques known as dependency directed back-tracking. Although these techniques have already been used in other applications, we believe we are the(More)
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