2021 Moratuwa Engineering Research Conference (MERCon)最新文献

{"title":"Impact of ERP Implementation on Employee Performance in Hospitality Sector: Role of Management Capabilities","authors":"Dinesh Samarasinghe, M. Suwandaarachchi, Sachen Dharshana Illangasinghe","doi":"10.1109/MERCon52712.2021.9525662","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525662","url":null,"abstract":"Most hotels either upgrade or implement ERP systems, with an intention to improve the organizational performance. In hospitality industry, guest satisfaction is linked with performance, where employee performance becomes a critical factor in deciding performance. Therefore, it is interesting to study the impact of the Enterprise Resource Planning (ERP) system implementation on employee performance in hospitality sector. The study investigates the influence of ERP system implementation on employee performance. Also, investigates whether management capabilities mediate the relationship between ERP system implementation and employee performance. The research was conducted based on deductive approach. Structured questionnaire was distributed among pre-selected hotels with ERP systems which were installed/upgraded within past two to three years. The finding of the study shows that there is a positive relationship towards employee performance through ERP system implementation. Further, management capabilities supportively mediate the positive relationship between ERP system implementation and employee performance. Findings will provide learnings to the hotels in the hospitality industry to enhance their performance to meet their increasing demand and agile customer preferences.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"22 1","pages":"95-100"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87603036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Moisture Transportation in Polyester Fabrics by Plasma Printed Wicking Channels","authors":"R. Gunarathna, Thisara Sandanuwan, D. Amarasinghe, D. Attygalle, S. Weragoda, N. Hendeniya","doi":"10.1109/MERCon52712.2021.9525725","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525725","url":null,"abstract":"By dissipating the absorbed moisture on clothes quickly, the wearer's comfortability can be improved. Wicking plays a vital role in transporting sweat away through the fabric from the generation areas of the body. Usually, this transportation is an undirected random process. It transports moisture in all possible directions, making large wet patches on the cloths, and these could lead to the wearer's discomfort. This paper reports a method to transport moisture away through predefined paths to predefined locations on weft knitted polyester fabric. The moisture transportation paths were printed on the fabric using a dielectric barrier discharge plasma gun. The results show the effectiveness of the proposed channel printing process for moisture management on the clothing.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"37 1","pages":"534-537"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90146208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable Cultivation of Haematococcus pluvialis for the Production of Natural Astaxanthin","authors":"Sanuji Hasara Nishshanka, V. C. Liyanaarachchi, M. Premaratne, T. Ariyadasa, Viraj Nimarshana","doi":"10.1109/MERCon52712.2021.9525648","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525648","url":null,"abstract":"Haematococcus pluvialis is a microalga with the ability to accumulate high quantities of astaxanthin. However, the large freshwater footprint and the requirement of external nutrient supply are issues in its commercial-scale cultivation. In the present study, synthetic dairy wastewater was employed as an alternative culture media for H. pluvialis under varying light intensities to determine the best lighting conditions for biomass and astaxanthin accumulation. The highest biomass concentration ($1.359 pm 0.013 mathrm{g}/mathrm{L}$) and astaxanthin concentration ($20.783 pm 0.105 text{mg}/mathrm{L}$) was achieved in the culture supplied with 3250 lux light intensity during the growth stage. Nevertheless, the highest specific growth rate ($0.0625 pm 0.000$ /day) and cellular astaxanthin content $(1.696 pm 0.007%)$ were observed in the culture supplied with 4000 lux during the growth phase. It was also observed that the total lipid content of cultures did not vary significantly with light intensity. Moreover, it was observed that total lipid content of residual H. pluvialis decreased significantly after astaxanthin extraction. Nonetheless, H. pluvialis showcased considerable potential of nutrient removal efficiency, achieving over 90% reduction of chemical oxygen demand (COD), total nitrogen (TN) and total phosphorus (TP). Thus, it could be speculated that cultivation of H. pluvialis under moderate light intensities could yield astaxanthin and lipid-rich biomass simultaneous to phycoremediation.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"43 1","pages":"297-302"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81325264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lagrange Multiplier Based Solution for Optimizing DG Sizes in Distribution Networks","authors":"K. Anuradha, U. Jayatunga","doi":"10.1109/MERCon52712.2021.9525764","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525764","url":null,"abstract":"Integration of Distributed Generation (DG) has occupied a great interest in modern power engineering due to its significant merits over the conventional power generation techniques. However, several aspects such as climatic conditions, land and fuel availability, DG location and DG size need to be carefully considered to harness the best results from integrating DG units for power networks. Among them, sizing of DG units has taken a prominent place as it affects the network operation as well as the cost aspect. Optimizing the sizes of prospective DG units that are intended to be integrated for a given network will facilitate in gaining the expected merits such as minimizing active power losses and voltage deviations without causing any stability, protection and power quality issue. The existing methodologies for determining optimal DG sizes are rather sophisticated. This paper presents a robust mathematical solving approach based on Lagrange Multiplier Method (LMM) for determining the optimal DG sizes for minimizing the active power losses and voltage deviations. The problem is formulated and solved as a multi objective function. Validation of the proposed mathematical solution strategy was tested using the IEEE-6 and IEEE-33 standard test bus systems. Results demonstrate the effectiveness of the proposed methodology.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"16 1","pages":"65-70"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86006451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methods to Estimate Bus Revenue from Passenger Boarding and Alighting Data: Case Study for Sri Lanka","authors":"Sabeen Sharic, S. Bandara, S. Fernando","doi":"10.1109/MERCon52712.2021.9525713","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525713","url":null,"abstract":"A methodology is developed to estimate the revenue of a bus trip based on data available on passenger boarding & alighting. Three scenarios are explained. First is when individual passenger data on boarding and alighting is available. The second is when the boarding and alighting data at stop level or by fare section and the third is when, only the total demand or only the past demand distribution pattern is available. First step is to determine passenger cumulative boarding and alighting by fare sections of a route based on bus ticket information or boarding and alighting counts. Then the cumulative boarding and alighting information is used for revenue estimation. To estimate the revenue, the bus fare for a given trip length is used for the first scenario and the moving average of sectional fare increments is used for others. A computer algorithm is developed to accommodate any scenarios. This algorithm helps to estimate the revenue of buses based on passenger boarding and alighting information and can estimate revenue for a given route or sections of a route, different passenger demand situations, different bus capacities and any service frequencies.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"43 1","pages":"597-601"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84550517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Collusion Set Detection within the Stock Market using Graph Clustering & Anomaly Detection","authors":"Ranika N. Madurawe, B.K.D Irosh Jayaweera, Thamindu Jayawickrama, I. Perera, Rasika Withanawasam","doi":"10.1109/MERCon52712.2021.9525724","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525724","url":null,"abstract":"Manipulations that happen within the financial markets directly affect the stability of the market. Therefore detection of manipulation ensures fair market operation. Most of these manipulations occur in the guise of collusion. Collusion in financial markets involves a group of market participants trading amongst themselves to execute a manipulative trading strategy. Most existing models do not consider the seemingly rare yet normal transactions into account when proposing collusive groups. Neither have they considered the effect of time within collusion. This work proposes a model to detect collusion in stock markets through the application of graph mining and anomaly detection. Creation of investor graphs denoting the relationships between investors and timely sampling of these graphs using Graph mining allows this research to consider the effect of time in collusion, subsequent anomaly detection allows for the filtering of results to avoid misnaming normal behaviour within the stock market. This research presents that Graph mining techniques such OPTICS and Spectral clustering perform consistently well to extract meaningful collusive groups, while the Local Outlier Factors work well as an Anomaly detector to filter out results received from Graph Clustering. The combination of these methods creates a pipeline which can outperform existing methodologies.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"22 1","pages":"450-455"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83054841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Linear and Non Linear Creep Modeling of Talc Filled PEEK Composite","authors":"G.I. Janith, D. Amarasinghe, D. Attygalle, V. Weragoda, A. Samarasekara","doi":"10.1109/MERCon52712.2021.9525773","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525773","url":null,"abstract":"The creep compliance of a viscoelastic material is a crucial material parameter that controls the time dependent creep. Viscoelastic materials and their composites are being widely used in electronic and structural components where strain response of such a material is of great concern. Linear viscoelastic models such as the generalized kelvin Voigt model is widely used to model the linear creep behavior. Poly ether-ether ketone is a semi crystalline polymer and in this study a PEEK composite filled with talcum is being used which also consists of a semi crystalline polymer matrix. Such semi crystalline matrixes are known to bring forth nonlinear viscoelastic properties. In this study we model the linear creep behavior and the stress dependent nonlinearity of the above-mentioned composite.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"11 1","pages":"60-64"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88632439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing Strength of Concrete Through Minimized Porosity","authors":"VS Hewawasam, Ddtk Kulathunga","doi":"10.1109/MERCon52712.2021.9525714","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525714","url":null,"abstract":"Porosity in concrete is a major defect that can be experienced after curing wet concrete mixtures which adversely affects the strength of concrete. Among the methods used to reduce porosity in concrete, still there is room for conceptualizing a methodology for further evolvement. Vacuum infusion technique was used to pump out entrapped air during the construction of boats using Ferrocement. This study focuses on checking the feasibility of applying the same technique to minimize the porosity of concrete. Grade 30 concrete samples were made using two different water cement ratios and aggregate sizes. Test cubes were cast using these concrete mixes and were subjected to infusion for two different durations. The samples were cured and tested for compressive strength at 7 and 28 days. Results revealed that the vacuum infusion technique can lead to significant increment in compressive strength. The results of porosity test show up to 4% reduction in porosity of samples subjected to infusion. Scanning Electron Microscope (SEM) test results also revealed a highly compacted microstructure in the samples. Therefore, it is evident that the vacuum infusion method can effectively reduce the porosity of concrete. Further, this technique can be developed to be used in precast concrete.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"16 1","pages":"263-268"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85096585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Track Chairs","authors":"Anand Paul, Soon Ki Jung, Wenmin Wang","doi":"10.1109/mercon52712.2021.9525710","DOIUrl":"https://doi.org/10.1109/mercon52712.2021.9525710","url":null,"abstract":"Call for Paper (pdf) As the information technology has become ubiquitous, so has human computer interaction (HCI) grown importance and influence in our lives. Every day we interact with the digital world through various means touch, see, hear and feel and it has an wide impact gradual chance in way we live our lifes. thus HCI is rapidly emerging field, which calls for promoting international cooperation and discourse that will touch every aspects of life in the near future. The HCI field essentially deals with the design, evaluation and use of interactive systems, with a common focus on user performance and experience, HCI research emphasize the interaction between humans, information, technologies and tasks. At this time we feel ACM-SAC as a professional entity address this challenge by organizing a track on Smart HCI in SAC 2015. The scope of this track will give due consideration in all areas of research that facilitate collaborations between Smart HCI and existing technologies. Topics of special interest include, but are not limited to, the following Adaptive and personalized interfaces Analysis and design methods Architectures for interaction/Artifact Lifecycle Management Computer–augmented environments/Computer–based learning Consumer and User/Ecological interfaces Emotions in HCI Evaluation methods and techniques Gesture and eye–gaze based interaction Graphical user interface Home and entertainment systems Human Centered Design and User Centered Design Human Factors Engineering Approach Information visualization/ Interaction design Intelligent and agent systems Interaction through wireless communication networks Interfaces for distributed environments/Interfaces for Large system ISO and Other International Standards Related to HCI New Technology and its Usefulness Non–verbal interfaces Pragmatic and Hedonic Aspects of Interaction Real Life Environments Qualitative and Quantitative Measurement and Evaluation Tangible user interfaces Universal Usability User interface development environments User support systems Visualization methods and techniques Mobile Cyber-Physical Systems Multimedia application other subjects focusing on HCI","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"255 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75764262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of Controller for Disturbances Rejection of Torrefaction Reactor with High Thermal Inertia","authors":"Janaka Bandara, M. Narayana","doi":"10.1109/MERCon52712.2021.9525671","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525671","url":null,"abstract":"This paper presents the analysis of the ability of disturbance rejection in the control systems of a torrefaction reactor with high thermal inertia. An electrical heating coil around the reactor is used to maintain the temperature and Nitrogen gas is purged to maintain inert environment. Main disturbance of the system is this Nitrogen gas flow variation to the reactor chamber. This gas flow will drop the temperature of the reactor chamber and change the rate of convection heat loss by forced convection. Changing the rate of heat loss will change the model parameters. In the study four control structures were simulated and compared the performances. The simulation shows that the cascade controller successfully rejects the disturbance of the drop of chamber temperature, but it is not successful in rejection of the disturbance by change of convection heat loss rate of the reactor chamber. Adaptive controlling is not effective as it takes a large amount of time to get adapted. A model based modified controller which is developed based on the model is proposed. This controller successfully rejects both disturbances.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"100 1","pages":"292-296"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73637465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}