Browsing by Author "Wickramarachchi, R"

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Open Access
Evaluating the impact of Large Language Models on problem-solving skills in programming debugging of IT undergraduates
(Taylor and Francis Ltd., 2026) Riztha, F; Wickramarachchi, R; Asanka, P P G D; Dissanayake, M. A
This study investigates the impact of Large Language Models (LLMs) on problem-solving skills in source code debugging among IT undergraduates. A pre-, mid-, and post-experimental design was employed, including pre-test, mid-test, post-test (Prior), and post-test (Recent) phases to assess debugging performance with and without LLM assistance. The sample consisted of 87 students from the Department of Industrial Management, University of Kelaniya, Sri Lanka, stratified by gender, academic level, A/L stream, Z-score, and GPA. Results showed significant improvement in debugging accuracy, increasing from 46.53% in the pre-test to 69.51% in the post-test (Prior), indicating skill retention. Task efficiency also improved, with completion time reduced from 18 minutes to 10 minutes. However, transferability to new problems was moderate, with a post-test (Recent) accuracy of 58.40%. Higher academic levels, technical A/L streams, and mid-range GPAs were associated with better retention and adaptability. While LLMs enhanced immediate performance, the findings highlight the need to balance their use with independent practice to support long-term skill development. Limitations include resource constraints and short study duration, suggesting the need for longitudinal research. The study recommends structured integration of LLMs to optimize programming education outcomes.
Open Access
A study of the implications of logistics 4.0 in future warehousing: a Sri Lankan perspective
(researchgate.net, 2019-03) Karunarathna, N; Wickramarachchi, R; Vidanagamachchi, K
An effective combination of highly innovative logistics infrastructure plays a vital role in every business activity as a strategy of achieving competitive advantage. Currently, warehousing has been identified as one of the foremost value adding activities in supply chains. In the warehousing industry, automated intralogistics systems would be an ideal solution to eliminate the inefficiencies in conventional practices as well as to overcome the labour shortage issue. With the emergent trend of technology adaptation in industries, it is evident that Sri Lanka has the capability to apply these technologies up to a certain extent. Therefore, discovering the opportunities of logistics 4.0 implementation in Sri Lankan warehousing industry is highly demanding. This scrutiny has been conducted using a comprehensive and systematic review of literature published in relation to the areas of smart warehousing, smart logistics, intralogistics and Sri Lankan Third Party Logistics (3PL) industry. Through the effective categorization and integrative analysis, this paper intends to identify the ways of warehousing process improvements using the logistics 4.0 technologies while achieving the operational excellence. Further, it is expected to suggest the critical success factors affecting the logistics 4.0 implementation from the perspective of Sri Lankan 3PL warehousing Industry.