Browsing by Author "Baduge, S"

Now showing 1 - 6 of 6

item: Conference-Abstract
Application of concurrency in delay claims
Baduge, S; Jayasena, HS
It was observed that the consideration of concurrency in delay claims in Sri Lankan construction industry is significantly low. A study was conducted to identify key reasons for low consideration of concurrency in delay claims analysis. A three-round study method was adopted. First was a pilot study by means of interviews to explore concurrent delay practice in Sri Lanka. Second was a round of semistructured interviews among key parties to a contract to identify significant causes affecting consideration of concurrency in delay claim analysis. Third round was a document survey aiming to identify lapses in documents which could affect successful practice of concurrent claim analysis. The study concludes that quality of documents is the most significant cause affecting the consideration of concurrency in delay claims analysis and identifies number of lapses in documents which contribute to low consideration of concurrency in delay claims. In addition to improving documentation practices, enhancing employers’ awareness on concurrency is also suggested as a necessity to improve concurrent delay analysis practice in the Sri Lankan construction industry.
item: Conference-Full-text
Application of concurrency in delay claims
(2012-06) Baduge, S; Jayasena, HS; Senaratne, S; Sandanayake, YG
It was observed that the consideration of concurrency in delay claims in Sri Lankan construction industry is significantly low. A study was conducted to identify key reasons for low consideration of concurrency in delay claims analysis. A three-round study method was adopted. First was a pilot study by means of interviews to explore concurrent delay practice in Sri Lanka. Second was a round of semistructured interviews among key parties to a contract to identify significant causes affecting consideration of concurrency in delay claim analysis. Third round was a document survey aiming to identify lapses in documents which could affect successful practice of concurrent claim analysis. The study concludes that quality of documents is the most significant cause affecting the consideration of concurrency in delay claims analysis and identifies number of lapses in documents which contribute to low consideration of concurrency in delay claims. In addition to improving documentation practices, enhancing employers’ awareness on concurrency is also suggested as a necessity to improve concurrent delay analysis practice in the Sri Lankan construction industry.
item: Conference-Full-text
Flight dynamics of a 'v' shape boomerang: effect of wind on boomerang trajectory
(IEEE, 2023-12-09) Rajathurai, R; Kumara, KJC; Baduge, S; Abeysooriya, R; Adikariwattage, V; Hemachandra, K
Boomerangs have captured attention because of the mechanical structure that realises such complex movements of the boomerang. The perfect prediction of the path leads to the application of boomerangs in the field. The external environment is always unsteady; therefore, the dynamics of boomerangs should be studied in unsteady wind conditions. The main aim of this research is to study the steady and unsteady wind effects on the boomerang trajectory by developing an unsteady input-based mathematical model. A traditional 'V' shape boomerang is designed using CATIA V5, and 2D steady state ANSYS Computational Fluid Dynamics Simulation (CFD) was performed to derive the aero dynamical coefficients of the boomerang. Finally, the newly developed mathematical model is numerically simulated using MATLAB. The trajectory of the boomerang in different wind conditions is plotted and compared. The results show that the steady and unsteady wind highly influences the boomerang path. Results show the capabilities of the model under both the steady and unsteady flow of wind in predicting a boomerang trajectory.
item: Conference-Full-text
novel application of adaptive fixed neighbourhood based sph (afn-sph) method to reduce computational time in meshfree based plant tissue drying models
(IEEE, 2020-07) Hansani, KGP; Kodithuwakku, AKCI; Baduge, S; Karunasena, HCP; Weeraddana, C; Edussooriya, CUS; Abeysooriya, RP
Smoothed Particle Hydrodynamics (SPH) is a popular meshfree method used in fluid dynamics which can be used to model higher deformable boundaries. However, compared to conventional grid-based methods, SPH based meshfree methods fundamentally consume higher computational time mainly due to the Nearest Neighbour Particle Searching (NNPS) algorithm. This becomes an obvious problem when modelling large 2-D and 3-D plant tissues as there is a higher number of interactions between particles. Very few attempts have been recently reported to obtain efficient computational performance when modelling the drying phenomena of plant tissues. Therefore, this research aims to introduce a novel application of the Adaptive Fixed Neighborhood based SPH (AFN-SPH) method, where the fixed neighbourhood with a radius of three times the smoothing length, get updated timely to represent the dynamic changes of the problem domain. It was observed that AFN-SPH is beneficial particularly to simulate plant tissues in extreme drying. Both qualitative and quantitative good agreements were observed in results compared to the conventional SPH techniques. Further, around 30%-40% of time reduction was obtained for different tissues. Therefore, the results indicated that this method can be used as a computationally efficient, meshfree based modelling approach applicable for problem domains with deforming boundaries.
item: Conference-Full-text
Win-win settlement: applicability of negotiation principles for dispute negotiations in construction projects
(Ceylon Institute of Builders, 2016-07) Baduge, S; Jayasena, HS; Sandanayake, YG; Karunasena, GI; Ramachandra, T
Effective resolution of dispute is always helpful for sustainable construction practices. However, it is experienced that parties continuously failing to reach settlements in an effective and efficient manner. Although many researches write on how to carryout negotiations successfully those concepts hardly adopted in construction dispute negotiations. Construction dispute negotiations are different to other business negotiations due to some unique features inherited such as complexity, regulated by contract, and tendency of discouraging claims. Therefore, it is identified new theories need to be developed and applied in construction dispute negotiations. Thus, the study was focused on improvement of fundamental principles of negotiation to address characteristics of construction projects. The study was approached through a multiple case study and in-depth study was carried out on two selected cases which claims based dispute negotiation successfully concluded. Success factors of claims based dispute negotiation identified through literature review compared with actual setting of selected cases. Further, it was identified how parties have addressed special characteristics of claims based disputes in construction projects when conducting negotiations. Analysis reveals that, how far theory can be explained through research findings and which theory should be extended based on knowledge explored. Accordingly conceptual framework had been developed and it is concluded that the negotiation process shall be merged with characteristics of construction disputes in order to achieve win-win settlement through negotiation. Major deviation from existing theory when applying to claims based dispute negotiation in a road project is negotiation shall be based on both position and interest of the parties.
item: Conference-Full-text
WIN-WIN SETTLEMENT: APPLICABILITY OF NEGOTIATION PRINCIPLES FOR DISPUTE NEGOTIATIONS IN CONSTRUCTION PROJECTS
(2016-09-06) Baduge, S; Jayasena, HS
Effective resolution of dispute is always helpful for sustainable construction practices. However, it is experienced that parties continuously failing to reach settlements in an effective and efficient manner. Although many researches write on how to carryout negotiations successfully those concepts hardly adopted in construction dispute negotiations. Construction dispute negotiations are different to other business negotiations due to some unique features inherited such as complexity, regulated by contract, and tendency of discouraging claims. Therefore, it is identified new theories need to be developed and applied in construction dispute negotiations. Thus, the study was focused on improvement of fundamental principles of negotiation to address characteristics of construction projects. The study was approached through a multiple case study and in-depth study was carried out on two selected cases which claims based dispute negotiation successfully concluded. Success factors of claims based dispute negotiation identified through literature review compared with actual setting of selected cases. Further, it was identified how parties have addressed special characteristics of claims based disputes in construction projects when conducting negotiations. Analysis reveals that, how far theory can be explained through research findings and which theory should be extended based on knowledge explored. Accordingly conceptual framework had been developed and it is concluded that the negotiation process shall be merged with characteristics of construction disputes in order to achieve win-win settlement through negotiation. Major deviation from existing theory when applying to claims based dispute negotiation in a road project is negotiation shall be based on both position and interest of the parties.