Browsing by Author "Liyanage, I."

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    Development of low-cost automated robot arm; its limitations and the validity of results through modified potentiometric experiments
    (Institute of Chemistry Ceylon Adamantane House, Rajagiriya, Sri Lanka., 2020) Perera, K. A. N. K.; Rodrigo, S.; Liyanage, I.; Umayanga, I.; Perera, B.; Nawarathne, D.; Perera, D.; Jiffry, N.; Sirimuthu, N.; Ekanayake, E. M. M. S.
    Robotics is used widely in design, construction and operation, further also in control, sensory, feedback and information processing. Robotics arm performs a crucial task in all the above. Automation in a chemical laboratory will be a major breakthrough in terms of productivity, quality and the reproducibility of the results, improved safety, reduce the time and cost of the whole running process. To catalyze this revolutionized system performances, as a combination of engineering and chemistry, we developed an automated robot arm and validated its results while overlooking the limitations via modified potentiometric experiments. The idea behind this concept is to use this robotics hand in places where it can be used to replicate the action of a human hand and thereby substituting its purpose in places where a human hand cannot be used. During this experiment robot arm involved in measuring cell voltage by using a standard calibrated potentiometer in a thermostat water bath at different temperatures; where it produced steady results compared to the manual procedure under same conditions while saving a considerable working time. The potentiometric reading equipment IEEE 488 fitted with an Interface Scanner 740 and a GPIB (General Purpose Interface Bus) program was used to obtain a continuous record of the potentials while test solutions were moving on a belt. For the validation, reading taken by using the automated arm and manual readings for the same sample were statistically analyzed (n=181) using t-test, linear regression and Spearman correlation coefficients which clearly indicate no significant difference between them. In summary, this work described an inexpensive and simple method for the automated potentiometric titration. The only limitation encountered during this process was the servo motors used, have only a maximum rotation of 180⁰ for 1m radius semicircle within 75s. Therefore, the area of movement is restricted to a certain region of space, but the arm can move an object from one-point coordinate to another in the x, y and z axes which could be adapted to many applications other than in a chemical lab.
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    Resolving the Problems of Performing Art Photography That Rises Up in The Theatre
    (Drama & Theatre and Image Arts Unit, Department of Fine Arts, University of Kelaniya, Sri Lanka, 2016) Liyanage, I.
    The purpose of this paper to discusses the photography in performing arts industry as a connoisseur. Experience of the art media and ability to handle the technology are the most important qualities that the photographer should have when they take photos of those performing arts. The montage knowledge of using camera technology, features of existing lighting corollary techniques, acting or body movements camera angle, limit of the frame, edition and the inherited characteristics of each art must be owned by the photographers by owning that knowledge the photographer is able to give a fair and ejective photographer for the performing art director / creator and for the photography connoisseur. When we look at the current performing art photography, some times the true feeling, abstract technical feasibilities of the grate directors are not clearly conspicuous. Inutility of understanding the performing art, problems of handling technology, weakness in time management. These are the problem that the photographer faces. When the photographers can maintain a proper connection between Theaters an camera, there can distribute a huge contribution to the performing art. When photographing theater, drama, dancing concerts, musical concert, photographer has to manage physical attires, facial expressions corollary techniques and has to gather necessary knowledge about it. By doing so reducing the practical conflicts that can appear in performing art, photography and creating more effective and creative photos were main purpose of here.