Browsing by Author "Rathnayaka, R. M. H. P."

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    Analyzing Outpatient Department Performance using ARENA Simulation: A Case Study
    (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019) Dilanthi., M. G. S.; Madhushan, W. A. P.; Ranathunga, R. A. R. Y.; Wijesiri, M. K. N. A.; Rathnayaka, R. M. H. P.
    Many public hospitals in Sri Lanka are becoming overcrowded and creating long waiting queues at their outpatient departments. Thus, they have faced the challenge of managing patients at their public health clinics and providing an effective service. Also, the patients become frustrated and make many complaints on the dissatisfied service. Therefore, this study identified the problem of unnecessary queuing in the selected public hospital. The investigations were done aiming to improve the performance of the department through probable solutions. Though the observed hospital had assigned eight doctors in the outpatient department, this study selected only two doctors considering the convenience of data collection. Then, the model was analyzed as a multi-server queuing system with infinite waiting room capacity and infinite population. The observations were recorded for patients’ arrivals to the queues at ticketing counter and service provisions of the two doctors in a one hour period of each for two days. The sample included 150 patients. Then the system was modeled using the student version of Rockwell ARENA 14.5. Moreover, the assumptions were made on arrivals to be random and independent. The service discipline was considered as First-In-First-Out. The Input Analyzer showed BETA distribution for all inter arrivals and service provisions. These results were used to define the modules chosen from both basic process and advanced transfer panels of ARENA. The model was simulated and obtained results for the respective average waiting times of patients in the queues at the ticketing counter, doctor 1 and doctor 2 as 4.82, 34.99 and 26.82 minutes. Furthermore, those values for the patients in the system were correspondingly 90.29, 104.97 and 182.22 minutes. Thus, the problem identified in the study was evident in the selected system emphasizing the necessity of improving the performance of the outpatient department. The study suggested to double the resources in the ticketing counter. The proposed model was then simulated and obtained reduced waiting times in the queues at ticketing counter, doctor 1 and doctor 2 respectively to be 0.64, 26.73 and 14.52 minutes. Further, the resource utilizations could be increased by 24%, 5% and 12% respectively to the above three observations. Therefore, the proposed model can be implemented in the outpatient department of the selected hospital to further improve its performance considering the financial feasibility
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    Impact of Web Characteristics on Purchasing Intention on Facebook Marketplace with Mediating Effects of Online Trust with Special Reference to Consumer Electronic Industry in Sri Lanka
    (Department of Marketing Management, Faculty of Commerce and Management Studies, University of Kelaniya Sri Lanka, 2024) Rathnayaka, R. M. H. P.; Jayawardena, S. M.
    With the proliferation of e-market platforms, the prominence of Facebook as a marketplace has grown very rapidly across the globe. Therefore, the impact of web characteristics and online trust on purchase intention has been explored across many different countries, markets, and products where buyers and sellers now meet on Facebook. And the ultimate impact on purchase intention has often varied based on many contextual factors. The main purpose of this study is to explore how web characteristics such as usability, information quality, interactivity, and aesthetics influence the purchasing intention of consumer electronic items sold on the Facebook marketplace in Sri Lanka. The study also analyses the mediating role of online trust in this relationship. Adopting a positivism approach, a quantitative study was conducted, in which responses were gathered from 391 respondents. A structured questionnaire was used as the primary source of data collection. The findings demonstrate a significant, positive impact of web characteristics on purchasing intention and further indicate that online trust significantly mediates the relationship between web characteristics and purchasing intention. These findings are useful for brand managers, e-marketplace website developers, and Facebook users to guide their designing, marketing, and purchasing decisions.