https://ir.kdu.ac.lk/handle/345/6711 2026-05-04T13:35:20Z https://ir.kdu.ac.lk/handle/345/7851 The Analysis of Existing Land Ownership in Urban Development with Special Reference to Meda-Minuwangoda Grama Niladhari Division Kuruppu, KAIS; Gunathilaka, AC; Ranawaka, CP; Perera, TGUP 2024-09-01T00:00:00Z https://ir.kdu.ac.lk/handle/345/6853 An Evaluation of Tropospheric Delay on GNSS Observations Gamaarachchi, GAMH; Manuranga, KP; Meththananda, RGUI; Ranawaka, CP The Global Navigation Satellite System (GNSS) is used to nd point locations in latitude, longitude, and altitude which are involved among the satellites and receivers through electromagnetic signals. Due to the refraction of the electromagnetic signals, the signals are delayed than the actual propagation time. In this study, the e ect of tropospheric delay on GNSS observations is considered by single-point observation on a primary control point of the Sri Lanka Datum 99 network. The study aims to investigate the total tropospheric delay of GNSS observations a ected at di erent times of the day without considering dry and wet components of the delay. The 24 hours of dual-frequency row data were collected and processed separately on the morning, afternoon, and evening observations using Leica Geo O ce 8.4 software applying Hop eld, Simpli ed Hop eld, and Saastamoinen models to correct the tropospheric delay. Then the purpose was to identify the variation of GNSS observations a ected at di erent times of the day due to the tropospheric delay, by determining the best tropospheric model which can be used to minimize tropospheric delay, and by de ning the best time for getting GNSS observations. The Saastamoinen model shows the minimum variation towards the original values of the A166 primary control point. According to this study, morning was the best time for collecting data for GNSS purposes. 2023-09-01T00:00:00Z https://ir.kdu.ac.lk/handle/345/6852 Mapping of Human-Elephant Conflict Risk Zones: A Case Study of Sooriyawewa Divisional Secretariat Division, Sri Lanka Rupathunga, PAMT; Rupasinghe, AR; Lakmal, AH; Wickramathilaka, NV; Hansamal, PAT With developments and population, people are facing hazards. But without identifying such hazardous areas, actions cannot be taken to prevent such incidents. The Human Elephant Con ict (HEC) is a main hazard that impacts rural society in Sri Lanka. HEC is the con ict between elephants and humans and causes deaths of elephants and humans. Increased populations of elephants and humans, habitat modi cation, rainfall, water bodies, and land use changes are vital for HEC. This study focuses on mapping the spatial distribution of HEC risk zones in Sooriyawewa Divisional Secretariat Division. Furthermore, this study develops a method to validate the accuracy of risk zones. Furthermore, the directions of the HEC hazard propagation are demonstrated over the risk zones. Embedding Geographic Information System (GIS) with spatial interpolation is vital to identify risk zones. Moreover, integrating GIS can greatly facilitate the classi cation of HEC risk zones into low risk, moderate risk, and high risk. Additionally, this study used Inverse Distance Weighted spatial interpolation to create its hazard risk validation approach. A comparison of spots with some interstitial bu ers was made to determine the propagation of the HEC from the center of Sooriyawewa. Therefore, it is crucial to determine the directions of risk and take actions to reduce the risk of HEC hazards. This will help in generating an HEC scenario map for the future and formulating an action plan of mitigation measures to avoid damage, loss of life, and socio-economic impacts in the study area. 2023-09-01T00:00:00Z https://ir.kdu.ac.lk/handle/345/6851 The Impact of BIM Software Application on the Quality of the Construction Project Success: Special Reference to the Post Pandemic Situation in Sri Lanka Deemantha, PSA; Jayasooriya, SD; Lakmal, AH The COVID-19 pandemic significantly impacted Sri Lanka’s construction sector and even in the post-pandemic situation. As a response, project stakeholders embraced remote work practices. This presents an opportunity for stakeholders in the construction industry to leverage Building Information Modelling (BIM) software applications to enhance the quality of the project success. BIM’s integration throughout the construction project life cycle positions it to become the standard, including procurement processes. The widespread adoption of BIM tools has transformed the global construction industry, automating service delivery and revolutionizing practices of the construction professionals. This research offers insights into using BIM software applications to overcome challenges associated with traditional methods. Findings indicate a positive impact of using BIM software applications by the construction professionals on the quality of project success in the post-pandemic situation of Sri Lanka and a positive relationship is observed between the BIM software applications by the construction professionals and the quality of project success. These findings can inform improvements for better preparing future professionals for upcoming challenges. In addition, this research emphasizes the importance of leveraging BIM software applications for enhanced the quality of the project success. It provides valuable insights to the construction professionals in empowering them to navigate the changing landscape and capitalize on the benefits of BIM. By embracing the advancements and recommendations outlined in this study, construction professionals can proactively adapt the future challenges and deliver improved project outcomes. 2023-09-01T00:00:00Z