University of Sri Jayewardenepura: Journals & Proceedings
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A Study of Clustering Approaches Applied to Customer Reviews in the Digital Era
Get PDFThe digital revolution has reshaped the landscape of business transactions, with online platforms generating vast amounts of text data through customer reviews. This paper explores the transformative potential of harnessing this data for customer segmentation, comparing traditional methods such as Term Frequency-Inverse Document Frequency (TF-IDF) and Bag-of-Words (BoW) with state-of-the-art Large Language Models (LLMs) for sentence embeddings. The primary objective is to identify the most effective approach for customer segmentation based on textual data by conducting a comprehensive analysis using clustering approaches. The study investigates the impact of LLMs, specifically BERT, RoBERTa, XLNet, and MPNet, in contrast to TF-IDF and BoW. Through experimentation and evaluation metrics, including the Silhouette Score, Davies-Bouldin Index, and Calinski-Harabasz Index, the research sheds light on the nuanced effectiveness of each method. While LLMs, particularly RoBERTa, demonstrate superior clustering performance, the study acknowledges the subtle impact of spelling correction on these models. The findings provide valuable insights for businesses seeking to understand customer sentiments and preferences, enabling more targeted and personalized strategies in the dynamic digital age. This research contributes to the evolving field of customer analytics by offering a comparative analysis of clustering approaches, laying the foundation for future advancements in text-based customer segmentation.
 
Cost-Efficient Light-Weight YOLO V5_s for Whole Fetus Detection in Early-Stage Ultrasound Scans
Get PDFRoutine medical Ultrasound (US) scans are recommended for expectant mothers to monitor the health and growth of the fetus. However, expectant mothers in rural areas of developing and underdeveloped countries face difficulties in receiving timely scans due to a lack of expertise and facilities. Consequently, maternal and fetal deaths occur at higher rates in these countries, especially in the first trimester. Novel concepts such as Virtual Doctors, Hospital to Home, self- scans and the Internet of Medical Things (IoMT) may address the aforementioned problem effectively. Therefore, computational-efficient algorithms which support low-end smart devices should be introduced to assist expectant mothers in rural areas to provide comfortable and timely fetal scans. In light of the above, this paper discusses computationally efficient YOLO V5_s for fetal detection in first-trimester ultrasound images using a highly diverse dataset including abnormal and multiple pregnancies. The implemented model was compared with five benchmark detection models, namely, ResNet-50 and MobileNet-based faster R-CNN, YOLO-n, YOLO-m and YOLO-l. YOLO was comparatively better than faster R-CNN. Even though YOLO-n is the most computationally inexpensive model, its mAP is 0.709, which is comparatively low, hence cannot be applied to the clinical set-up. YOLO-l model has the best performance with F-1 score and mAP of 0.978 and 0.751, respectively. However, YOLO-s has also achieved a F-1 score of 0.979 with a mAP 0.734. Therefore, a subjective test was conducted to verify using YOLO-s in the clinical set-up with five experts in the field with more than five years of experience. The subjective analysis test, assessed through Fleiss Kappa, suggests substantial agreement beyond chance (κ = 0.69), while the Intraclass Correlation Coefficient (ICC) indicates modest reliability (ICC = 0.7). The findings endorse the application of YOLO-s for real-time detection of whole fetuses in the first trimester with reduced computational complexity with further validation
Illegal Migration: the film Dunki through Dependency Theory
Get PDFRajkumar Hirani’s Hindi film Dunki [meaning illegal migration] (2023) depicts a story of a group of friends from Punjab, who set out on a perilous journey to emigrate to the United Kingdom via a clandestine route called 'donkey flight', risking their lives in the process. The film strikes a chord with audiences by portraying its protagonist’s relentless battle against structural inequalities – situations where one group of people are offered unequal opportunities in relation to the other groups of people – that disproportionately impact underdeveloped countries. The intent of this position paper is to engage in an analysis of the film by employing the lens of Dependency Theory. Accordingly, this analysis aims to delve into the intricate interplay of cultural and economic dependencies, shedding light on the broader narrative of global inequities. The film serves as a poignant reminder of how the underdeveloped world, due to economic and cultural inequalities, is driven to survive in the developed world, even if it is by illegal means
Socioeconomic Factors Affecting English Language Proficiency as a Second Language A Study of Rural Students in the Hambantota District
Get PDFLanguage is a powerful weapon. However, in a developing country like Sri Lanka, the language level of students in learning and teaching a second language like English in school education has not reached the required level. As a result, in this study, which identifies the factors influencing the learning of English as a second language in the Hambantota Divisional Secretariat, why do the majority of rural students display low or limited English proficiency? Focuses on the study subject of what alternative tactics can be employed in learning and enhancing English as a second language. The main objective of this study is to propose ways for overcoming students' language proficiency issues by examining the socioeconomic aspects that have influenced it. The Hambantota Education Zone was chosen as the research area. 'Convenience sampling' was utilized to gather information on the time period. The study employed a mixed method approach, utilizing both primary and secondary data. A performance questionnaire was distributed to 100 randomly selected students in order to collect data via questionnaire and interviews. The descriptive statistical approaches were used to evaluate quantitative data, while the exploratory approach was used to analyze qualitative data. As a result, it became evident that in order to acquire a modern language like English, it should be taught in an appealing manner, rather than using outmoded ways. Furthermore, the English proficiency of the children in the investigated area was relatively low. It is largely due to a lack of practicality in both teaching and learning.
DOI: http://doi.org/10.31357/fhss/vjhss.v09irchss2023.a0
Valuation as Research: A Defensible Approach
Get PDFValuation is a process intended to address specific inquiries concerning the value of real property. It entails market research. Although the final estimated value, expressed in monetary terms, holds importance, its validity cannot be assured unless the methodology is credible and reliable. Given that valuation is not a pure science, the term ‘defensible valuation’ is more appropriate than ‘accurate valuation.’ Therefore, defensible valuation centers on the robustness and integrity of the valuation process itself. This paper aims to refine the valuation process to enhance its robustness. Disciplinary literature was critically reviewed and complemented by expert consultations to identify key themes. These themes were then systematically mapped onto the current valuation practices to uncover potential areas for enhancement. A framework is derived as a defensible valuation process with high robustness and integrit
An Analysis of Service Quality and Practices of NonRegulated Real Estate Brokers in Sri Lanka: Service Users’ Perception
Get PDFThe real estate sector plays a vital role in any economy, with the quality of brokerage services significantly impacting market dynamics. In Sri Lanka, real estate brokerage operates in an unregulated environment, leading to concerns about service quality. Despite the widespread presence of non-regulated brokers, research on their practices remains limited. Thus, this study aims to assess user perceptions of service quality provided by non-regulated real estate brokers in Sri Lanka, focusing on reliability, responsiveness, assurance, empathy, and tangibility using the SERVQUAL model. Primary data was collected from a sample of 100 individuals who had purchased properties through brokers in the Sabaragamuwa Province. The findings reveal significant deficiencies in reliability, responsiveness, and tangibility, all of which contribute to overall dissatisfaction with quality of brokerage services. The study emphasizes the urgent need for regulatory measures to enhance service quality, protect homebuyers, and stabilize the real estate market. By addressing these gaps, the research highlights the negative consequences of unregulated brokerage practices and advocates for the implementation of regulations to ensure professionalism and improve the overall functioning of the sector
The Influence of Gratifications Related to User-Generated Content on the Purchase Intention of Clothing of Young Consumers in Sri Lanka
Get PDFPurpose: This study examines the influence of user-generated content (UGC) on the purchase intentions of young consumers in Sri Lanka’s online clothing market. With the rise of Web 2.0 and social media, consumer behavior is increasingly shaped by interactive content. The study explores how UGC impacts consumers' intentions by fulfilling various gratification needs, such as content, social relations, and self-presentation, within the digital landscape.
Design/methodology/approach: Adopting a positivist paradigm and a deductive research approach, this study employed a quantitative survey methodology. Data were gathered using self-administered online questionnaires from 250 young Sri Lankan consumers, aged 15 to 29, who used online platforms to purchase clothing. A purposive sampling technique was applied to ensure the sample's relevance to the research objectives. The collected data were analyzed using regression analysis to examine the relationship between user-generated content (UGC) and consumer purchase intentions.
Findings: Results indicate that UGC positively influences purchase intention among young consumers through utilitarian and hedonic content gratification. Social relation gratification, including trust and homophily on platforms like Facebook, enhances consumer purchase intention by fostering community and in-group acceptance. Additionally, self-presentation gratification encourages purchase behavior by allowing consumers to project their desired identities and values through social media engagement.
Originality: This study contributes to the limited research on UGC’s direct impact on purchase intentions within the clothing industry in Sri Lanka. It expands existing theories by applying the uses and gratifications theory to the online shopping context, offering insights into the specific types of gratifications that drive young consumers’ purchasing decisions.
Implications: The findings provide valuable insights for clothing brands and digital marketers in Sri Lanka. By focusing on the utilitarian, hedonic, and relational aspects of UGC, brands can better tailor their social media strategies to engage young consumers effectively. This research emphasizes the importance of creating social media content that resonates with consumers’ functional and identity-driven needs to enhance purchase intentions
නවකතාවේ නව සංකල්ප කේන්ද්රය සහ පරිවාරය
No full textColonization had a huge impact on Sri Lankan society. Because of that new social organizations, more political corporations, new institutions, new literature, new culture and gestures were established in the Sri Lankan social context. Among these the main reason for the change in Sinhala literature was western literature. The novel is a genre of modern literature. The Novel came into Sinhala literature through modern literature that came with the colonization. The Sinhala novel, which started as a simple fiction story and acquired the form and quality of a novel in the first decade of the twenty-first century, has now become a powerful literal category. During the colonial period, orientalism mainly influenced the novel. According to colonialism, European society is defined as the center and other societies outside Europe as the margin. This social climate is questioned by Orientalism. It is one of the forms found in novels written in the early period. But the western novel began to develop rapidly based on new literary concepts. When the post-colonial era came, new concepts of literature influenced Sinhala literature. Out of all, it influenced the Sinhala novel most. The new concepts called center and margin started to appear during this era. Realist novels reveal that the capitalist classes are at the center and proletariat is the margin of the Sri Lankan social context. Sunethra Rajakarunanayake’s Sandun Gira Gini Ganiyi (1989) is a novel in its own right as the disclosure of how that situation operates as a social force
The Evolution of Humorous Leadership: Mapping Intellectual Structures and Research Frontiers
No full textHumour in leadership has emerged as a significant factor influencing employee wellbeing and organisational success. Despite growing interest among scholars and practitioners, research in this field has remained fragmented. To advance systematicunderstanding, this study conducted a bibliometric analysis of 134 publications on humour in leadership from 2014 to 2024 using VOSviewer. The analysis highlights leading authors, institutions, highly cited works, and publishing nations. Results indicate thathumour in leadership is a growing yet still nascent area of inquiry, with four major research clusters identified: Workplace Dynamics and Employee Well-being, Ethical and Behavioural Dimensions, Psychological and Risk Management Aspects, and Practical Management and Organisational Wellness. The findings provide a structured overview of emerging trends and thematic developments, offering valuable insights for future research and practical applications in leadership studies.
Key Words: Bibliometric Analysis, Employee Well-being, Humour in Leadership, Organisational Succes
