https://ir.kdu.ac.lk/handle/345/8351 2026-04-08T13:44:14Z 2026-04-08T13:44:14Z Sanjunee, SMM Munasinghe, H Arooz, FR https://ir.kdu.ac.lk/handle/345/8763 2025-08-16T03:24:25Z 2024-09-01T00:00:00Z

Quality Assurance in Designing Based Architectural Education and Its Holistic Assessment in Sri Lanka Sanjunee, SMM; Munasinghe, H; Arooz, FR Architectural education is a distinctive form of teaching and learning that spans over art, science and social sciences. It is the qualification that enables designers to contribute in built environment and work for the betterment of the community by enhancing the quality of life through the built environment. In the process of making a professional architect is a complex process that involves a major portion of subjective teaching and learning. The individual interpretations and cognitive work further make the architectural education unique and complex. Quality assurance is a very popular concept in higher education as it is identified as a crucial component in making well qualified professionals to the world beyond the universities. Adaptation of quality assurance scheme that is responsive to the authentic nature of architectural education is slightly touched in the field of research in architectural education. Therefore, the study aimed to develop a framework bridging the gap between general quality assurance frameworks and architectural education. Further the study details few issues and concerns of typical architectural education when referred with quality assurance that can be used in positive modification to fundamental objectives of architectural education. These will enable to enhance the quality of architectural education in the modernity by comprehensively addressing the needs of contemporary construction industry.

2024-09-01T00:00:00Z Rupathunga, PAMT Jayamanne, JMO Hansamal, PAT https://ir.kdu.ac.lk/handle/345/8762 2025-08-16T03:19:35Z 2024-09-01T00:00:00Z

Examining the Impact of Elevation Mask on Atmospheric Delay Errors in GNSS Static Observations Rupathunga, PAMT; Jayamanne, JMO; Hansamal, PAT The study aims to investigate the impact of different mask angles on the precision of GNSS static data acquisition and to analyze the correlation between precision and diverse refraction models. The angle of the elevation mask is utilized to ascertain the minimum elevation above the horizontal plane that is deemed acceptable for the detection of satellites. This study focused on the Southern province of Sri Lanka, and the investigation employed control points within this region. Data was collected using Topcon GR-5 devices and processed with Leica Geo Office software. The accuracy of the system was assessed by considering various mask angles and refraction models. The results reveal a negative correlation between elevation mask angles and atmospheric delay errors. A 15° mask angle shows fewer errors compared to a 10° angle. The study suggests that GNSS observations without ionospheric and tropospheric models achieve better precision with mask angles exceeding 15°, reducing atmospheric delay errors. The results of this study can help professionals choose the best mask angle for their GNSS applications and increase the overall precision of static data collecting.

2024-09-01T00:00:00Z Wijewardhane, SR Gunasinghe, GP Manuranga, KP Waligodapitiya, H https://ir.kdu.ac.lk/handle/345/8761 2025-08-16T03:11:31Z 2024-09-01T00:00:00Z

An Analysis of Harbor Basin Bathymetry Using Satellite Imagery: A Case Study in Kirinda Fishery Harbor, Sri Lanka Wijewardhane, SR; Gunasinghe, GP; Manuranga, KP; Waligodapitiya, H Accurate bathymetric data involves mapping the depth and features of the underwater terrain. Further, bathymetric data can be revealed by effective harbor management, navigation, infrastructure planning, and dredging operations. Precise bathymetry is the basis of creating reliable nautical charts and ensuring safe navigation for vessels. The traditional sonar surveys have essential limitations, despite their effectiveness. Therefore, different methods such as satellite imagery are being used to make bathymetric data collection more effective and cost-effective, to address the limitations of traditional sonar surveys. In this study, at the harbour basin in Kirinda, the most advanced remote sensing techniques and image processing methods were implemented to generate a wide-ranging bathymetric map. The maps generated from remote sensing technology made available insights into underwater topography, sediment distribution, and changes over time. The analysis of Landsat 8 satellite imagery data from 2012, 2014, and 2017 was used, and to confirm the accuracy of the satellite-derived bathymetry, sound-derived bathymetry data from 2012, 2014, and 2017 were also combined. The following changes in Kirinda Fishery Harbor have been observed, which are sediment variations, resulting in increased maintenance costs and disruptions for harbour users, over the period from 2012 to 2017. Prevention of safe channel of the vessels was identified as a result of siltation had led to a reduction in the harbor basin's depth. This information provides a better understanding of the physical characteristics of the harbour. Furthermore, it implies that supports decision-making processes related to infrastructure planning and maintenance and facilitates effective harbour management and navigation safety.

2024-09-01T00:00:00Z Dissanayaka, DMAP Bandulasoma, HHKT Wikaramathilaka, NV Ranawaka, CP https://ir.kdu.ac.lk/handle/345/8760 2025-08-15T09:00:41Z 2024-09-01T00:00:00Z

Spatial Modeling of Two-Dimensional Road Traffic Noise in Urban Zones: Case Study in Ratnapura Municipal Council Dissanayaka, DMAP; Bandulasoma, HHKT; Wikaramathilaka, NV; Ranawaka, CP Addressing the global concern of noise pollution emanating from urban motor traffic, this study employed a sound model to assess the noise landscape in the Ratnapura Municipal Council area of Sri Lanka. Field observations provided crucial data on vehicle speed, type, and density at various points within the study area, serving as input for the sound model. Data collection spanned two distinct periods, 7:00 a.m. to 9:00 a.m. and 12:30 p.m. to 2:30 p.m., strategically chosen to capture peak noise levels. Utilizing multiple interpolation techniques, decibel values were extrapolated, with the Kriging-Spherical technique identified as the optimal method based on field-observed noise readings at corresponding locations. The study reveals zones within the municipality experiencing elevated noise pollution levels, and regional distribution maps illustrate the intricate relationships between contributing factors and noise pollution. The findings provide recommendations for mitigating noise pollution, with a specific focus on the Ratnapura context. Moreover, this study underscores the importance of adapting strategies to the dynamic nature of urban environments, enhancing our comprehension of the current state of noise pollution. The findings provide practical insights for governments and urban planners, offering sustainable solutions to address this pervasive issue. Additionally, it emphasizes the necessity for continuous, long-term research to comprehensively grasp evolving noise patterns, supporting ongoing data collection and analysis initiatives.

2024-09-01T00:00:00Z