https://ir.kdu.ac.lk/handle/345/7127 Wed, 13 May 2026 10:12:23 GMT 2026-05-13T10:12:23Z https://ir.kdu.ac.lk/handle/345/7144 Evaluating Occupational Radiation Exposure in Interventional Cardiology: an Investigation Into Estimating Effective Dose Wickramasinghe, Sachini Udara; Ramanathan, Vijitha; Sarasanandarajah, Sivananthan To safeguard the safety and well-being of interventional cardiology healthcare workers, monitoring their occupational radiation exposure is crucial. This study evaluates the radiation dose of interventional cardiologists using the Swiss Ordinance for personal dosimetry approach. Its primary aim is to estimate the radiation dose for each operator engaged in interventional cardiology procedures to protect from dangerous levels of radiation. Additionally, this study assesses the correlation between under-apron and over-apron dosimeters. Notably, no previous studies in Sri Lanka have specifically assessed radiation dose in this context, making this research vital in shedding light on radiation exposure in an interventional cardiology environment. Two cardiologists conducted a total of 108 interventional cardiology procedures, including coronary angiograms and percutaneous coronary interventions for a month at the cardiac catheterization laboratory of Sri Jayewardenepura General Hospital, Sri Lanka. Active dosimeters were utilized to measure dose values using a two-dosimeter approach where one dosimeter was positioned above the thyroid collar and the other beneath the lead apron on the left side of the waist. The effective doses (E) were determined using the Swiss Ordinance algorithm. Furthermore, this study also examined the relationship between under and over-apron dose values. The Swiss Ordinance algorithm estimated the mean annual E values for each cardiologist, resulting in 3.0397 mSv/year and 0.9697 mSv/year, respectively showing that the estimated annual occupational doses remained well below the annual dose limit (20 mSv/year). The accuracy of the algorithm in interventional ionising radiation scenarios was also highlighted. A strong positive correlation (R2 = 0.9500) was observed between over-apron and under-apron dose values. Applying the Swiss Ordinance for personal dosimetry and studying the link between over and under-apron dosimeters in interventional cardiology improve our grasp of radiation dosimetry. Emphasizing precise dose estimation for the safety of cardiologists, this study enhances the radiation safety practices in interventional cardiology. Wed, 01 Nov 2023 00:00:00 GMT https://ir.kdu.ac.lk/handle/345/7144 2023-11-01T00:00:00Z https://ir.kdu.ac.lk/handle/345/7143 Padlet App Uses in TESL: a Sri Lankan Experience Sudusinghe, WS; Gamage, CKW; Rajapaksha, RMNP Digital technology is found capable of playing a vital role in efforts to change from teacher-centeredness to student- centeredness in classroom management for TESL (Teaching English as a Second Language) by introducing autonomous learning strategies into the methodology followed. Therefore, integrating technology into TESL mechanisms is considered of paramount significance. In that context, Padlet is found usable as an efficient online app that can be used to boost active learning among students. Based on the results achieved in an experiment with a random group of 48 first-year Law undergraduates and 20 Computing freshmen at General Sir John Kotelawala Defence University who had been engaged in Padlet-based online learning activities in ESL for a period of four weeks, this paper analyses using SPSS 23.0 the data gathered in an online survey. Overall, the perceptions of the study population regarding the use of Padlet have been reported as positive. As revealed by the results, most of the participants (88.2%) were new to the use of Padlet app by the time it was introduced. Nearly, 79.4% of them identified that Padlet can make learning collaborative. In the meantime, 92.6% were convinced that Padlet is very influential in the process of knowledge sharing and 82.4% that it is a form of good motivation. Padlet has thus proven to be a very efficient tool in TESL. Hence, it is suggested here that it is important to include activities based on Padlet when designing curricula for teaching English as a second language. Wed, 01 Nov 2023 00:00:00 GMT https://ir.kdu.ac.lk/handle/345/7143 2023-11-01T00:00:00Z https://ir.kdu.ac.lk/handle/345/7142 Translation and Cross-cultural Adaptation of Trait Emotional Intelligence Scale-short Form (TEIQue-SF) Into Sinhala Solomons, TH; Jayasekara, P; Govindapala, D; Hettige, T Despite emotional intelligence (EI) being recognized as important in all areas of a person’s life, measuring the emotional aspects of most Sri Lankans remains challenging due to the lack of suitable psychometric assessments. The current study translated and carried out the cross-cultural adaptation of the Trait Emotional Intelligence Scale- Short Form into Sinhala. Trait Emotional Intelligence Scale-Short Form has been recognized as a valid and reliable instrument to measure emotional intelligence. The tool was translated by a bilingual, licensed clinical psychologist, incorporating the World Health Organization guidelines for translating and adapting instruments. The translation was evaluated and modified by an expert panel. The second panel rated the translation for content validity. The comprehension test was done with 15 participants who belonged to different educational backgrounds. The back translation was carried out by a professional translator. The adaptation was completed in consultation with the original author of the scale. The majority of the items received a Content Validity Index score of one (01). The comprehension test results indicated that the translated Trait Emotional Intelligence Scale-Short Form was easily understood by Sinhala speakers with an average education. Trait Emotional Intelligence Scale-Short form can be validated for Sinhala speakers of Sri Lanka by future researchers. Wed, 01 Nov 2023 00:00:00 GMT https://ir.kdu.ac.lk/handle/345/7142 2023-11-01T00:00:00Z https://ir.kdu.ac.lk/handle/345/7141 Geospatial Mapping of Groundwater Potentiality in Sooriyawewa Divisional Secretariat Division by Utilizing GIS De Silva, USH; Amasha, APY; Chathuranga, Manjula; Sandamali, Janaki The dry zone of Sri Lanka is affected by drought conditions owing to a lack of rainfall. Hence, mapping the distribution of groundwater potential zones is vital for water management. The Hambantota district, which is in the dry zone is a severely afflicted area due to lack of rainfall, and Sooriyawewa divisional secretariat area faces water scarcity. Therefore, this study aims to map groundwater potentiality in the Sooriyawewa divisional secretariat division using a geographical information system. For this study, spatial interpolation techniques, weighted overlay analysis, georeferencing, and digitizing methods were used. In this study, the annual average rainfall, geology, geomorphology, drainage density, lineament density, land use land cover, slope, and soil maps were prepared, and integrating those maps, the final groundwater potential zones map was prepared by using ArcMap 10.5 software. The study found that there were no high-potential groundwater zones in the Sooriyawewa divisional secretariat division and it already consists of low and moderate ranges. Therefore, the final groundwater potential zone map was categorized as very low, low, and moderate. The Percentages of area Coverage according to classes as, very low 2%, low 91%, and moderate 7%. This study can be highly helpful in identifying the groundwater potential zones in the Sooriyawewa divisional secretariat division and in preventing water scarcity because identified groundwater potential zones can be used for effective water management and provide essential information to responsible authorities for decision-making. Furthermore, the identified potential zones can be used for rainwater harvesting and can be used properly for future consumption. KEYWORDS: Georeferencing, Geographical Information System, Spatial Interpolation, W Wed, 01 Nov 2023 00:00:00 GMT https://ir.kdu.ac.lk/handle/345/7141 2023-11-01T00:00:00Z