2021 Moratuwa Engineering Research Conference (MERCon)最新文献_第9页

Gesture-based Sports Training Video Recording System 基于手势的运动训练录像系统

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525680

L. W. Amarasinghe, Ruwan Dharshana Nawarathna

引用次数: 0

An Artificial Appendage for Swimming Microrobots in Non-Newtonian Fluids 在非牛顿流体中游动的微型机器人的人工附属物

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525635

K. Perera, Y. Amarasinghe, D. Dao

引用次数: 4

Assessment of Measure of Effectiveness of Two-lane Roads Under Non-homogeneous Traffic Conditions 非均匀交通条件下双车道道路有效性测度评价

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525776

Gayani Rajapaksha, S. Bandara

引用次数: 0

A Mixed Integer Nonlinear Programming Model and Heuristic Solutions for an Automated Demand Response System for Large Facilities 大型设施自动化需求响应系统的混合整数非线性规划模型及启发式解

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525693

Asanka S. Rodrigo, Ama Mandasmitha Ranawaka, Mewan Abeywickrama, Devin Akila Malawara Arachchi

{"title":"A Mixed Integer Nonlinear Programming Model and Heuristic Solutions for an Automated Demand Response System for Large Facilities","authors":"Asanka S. Rodrigo, Ama Mandasmitha Ranawaka, Mewan Abeywickrama, Devin Akila Malawara Arachchi","doi":"10.1109/MERCon52712.2021.9525693","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525693","url":null,"abstract":"Demand Response is utilized around the globe to alleviate the peak demand economically and to manage reliability-compromising emergencies in power systems. Sri Lanka requires an effective Demand Response system to cater the peak demand more economically than dispatching expensive thermal power plants, while minimizing sub-optimal consumption patterns exhibited by consumers during peak demand periods. Therefore, this paper is focused on the development of an algorithm for an Automated Demand Response system for large facilities, which is customized to suit the requirements of the Sri Lankan power system. Under this system, both the utility organization and the consumers are expected to be mutually benefited. This algorithm consists of three levels: deciding on whether or not to execute an Automated Demand Response event for a particular time interval, determining the optimum facility-level demand reductions, and determining the optimum appliance- level demand reductions. Mixed integer nonlinear programming and a heuristic method are used to solve the optimization problems in this algorithm. Results of this algorithm are analysed using a miniature model of the Automated Demand Response system, consisting of fifteen power plants and five industrial and general-purpose facilities.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"62 1","pages":"83-88"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80067814","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}

引用次数: 0

Design of an Alternating Pressure Overlay for the Treatment of Pressure Ulcers 用于治疗压疮的交替压敷层的设计

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525787

Malindu Ehelagastenna, Ishan Sumanasekara, Hishan Wickramasinghe, I. Nissanka, Gayani K. Nandasiri

{"title":"Design of an Alternating Pressure Overlay for the Treatment of Pressure Ulcers","authors":"Malindu Ehelagastenna, Ishan Sumanasekara, Hishan Wickramasinghe, I. Nissanka, Gayani K. Nandasiri","doi":"10.1109/MERCon52712.2021.9525787","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525787","url":null,"abstract":"This paper discusses the development of an alternating pressure overlay designed with miniaturized air cells for the treatment of pressure ulcers. Pressure ulcers can be identified as a skin deformity due to application of prolonged pressure on the skin causing improper blood circulation. The alternating behaviour of the air cells aid in pressure relieving, thus provide better blood circulation to carry vital nutrients to the tissues while reducing formation of pressure ulceration. The proposed design miniaturizes the air cell sizes and establish an optimum air cell size to provide high-resolution pressure therapy in comparison to existing designs. This optimum air cell size, geometry along with its 3D deformation profiles were analysed using finite element method. The findings of the numerical simulations concluded that individual cell design should contain a minimum cell membrane thickness of 5mm and an overlay height of 185mm to withstand a maximum pressure of 60mmHg. Optimum pressure pattern of the alternating pressure therapy was selected as 1-in-4 pressure pattern, where the pressure overlay was divided into five pressure zones to actuate and map the interface pressures required. The control system was designed to provide required alternating pressure for patients by detecting the high pressure zones.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"4 1","pages":"202-207"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80503740","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}

引用次数: 2

Activity Participation Patterns of Individuals in Sri Lanka 斯里兰卡个人活动参与模式

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525719

T.M.P. Malshan, G. De Silva

引用次数: 0

Trace Metals in the Atmospheric Deposition and Gaseous Emissions around Karadiyana Municipal Solid Waste Dumpsite, Sri Lanka 斯里兰卡卡拉迪亚纳城市固体废物倾倒场周围大气沉积和气体排放中的微量金属

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525716

S. de Silva, P. Wijekoon, M. Vithanage

{"title":"Trace Metals in the Atmospheric Deposition and Gaseous Emissions around Karadiyana Municipal Solid Waste Dumpsite, Sri Lanka","authors":"S. de Silva, P. Wijekoon, M. Vithanage","doi":"10.1109/MERCon52712.2021.9525716","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525716","url":null,"abstract":"Municipal solid waste accounts for ambient air pollution through heavy metals in atmospheric deposition and greenhouse gases. In the current study, heavy metal pollution was estimated by analyzing dust samples collected from Karadiyana solid waste dumpsite, Sri Lanka. Emission of CO2, CH4, NH3 and H2S were accounted for four locations within the dumpsite area using an air-trapping box and air quality monitor (Aeroqual HH S500L). Dust was collected from four sampling sites using 1.5 m height dust samplers, for the analysis of Cr, Fe, Ni, Cu, Zn, Cd, and Pb using microwave plasma atomic emission spectrometry (MP-AES) after acid digestion. Average Fe concentration of 1100 µg/L was detected in the samples while Cr concentration was only 13 µg/L. Both Cu and Cd showed an average dissolved element percentage of 54%, while other elements also showed considerable dissolubility percentages. A dissolved element amount of 59% was detected in samples collected from a house adjacent to the dumpsite. Total metal concentrations of 1306 and 2213 µg/L were exhibited at sites A and B, respectively. Both sites A and B showed an average concentration of 590 mg/L of total measured gaseous emissions. CO2 was detected as the predominant species at all four locations.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"17 1","pages":"231-234"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90448665","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}

引用次数: 0

Influencing Factors of Absenteeism of a Small Scale Garment Factory (Case Study) 某小型服装厂旷工影响因素分析(个案研究)

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525775

V. Ratnayake, Subhoda Udawatta

引用次数: 1

Study on use of Bottom ash in manufacturing Cement Blocks 底灰在水泥砌块生产中的应用研究

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525739

Dilukshan Sritharan, K. Baskaran, J. Jayakody

{"title":"Study on use of Bottom ash in manufacturing Cement Blocks","authors":"Dilukshan Sritharan, K. Baskaran, J. Jayakody","doi":"10.1109/MERCon52712.2021.9525739","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525739","url":null,"abstract":"Bottom ash is a common by-product of thermal power plants or boilers. From an ecological and engineering point of view, the use of coal bottom ash in cement mixtures is a beneficial application. This study mainly aims to check the possibility of using bottom ash as a replacement to the fine aggregate in manufacturing $300text{mm}times 100text{mm}times 150text{mm}$ solid cement blocks locally. Bottom ash from the coal-fired boiler in Sri Lanka was used to replace manufactured sand at different percentages by volume of sand. Mechanical and durability properties of cement blocks were determined at the ages of 14, 28, and 56 days. Finally, developed statistical models to predict compressive strength, water absorption, and density of cement blocks. The results showed that the density and compressive strength of cement blocks decreased, and water absorption increased with an increasing replacement level of bottom ash. From the analysis, it can be concluded that up to 45 per cent of fine aggregate in the cement blocks can be replaced with sieved coal bottom ash to produce cement blocks, which satisfy the requirements of current SLS standards.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"23 1","pages":"392-396"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91523477","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}

引用次数: 0

Investigate the Applicability of Different Structural Configurations for Bridge/ Via duct Pier in Local Expressway 探讨不同结构形式在地方高速公路桥涵墩上的适用性

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525792

Ganaatheban Mohanakkumaran, H. D. Hidallana-Gamage, R. Indrajith

{"title":"Investigate the Applicability of Different Structural Configurations for Bridge/ Via duct Pier in Local Expressway","authors":"Ganaatheban Mohanakkumaran, H. D. Hidallana-Gamage, R. Indrajith","doi":"10.1109/MERCon52712.2021.9525792","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525792","url":null,"abstract":"Piles with tie beams are mostly used as a practice in the expressway bridges in Sri Lanka. Even though it seems to be cost effective, the reliability of the substructure in some soil conditions, might be quite low when compared to other structural configurations like piles with pile cap. A study on this matter will be helpful to identify a suitable structural configuration for substructure in terms of structural, geotechnical, and economical aspects. For this study, a bridge located in the Central Expressway project in Sri Lanka was considered. Pile with tie beam configuration and 4 other possible alternative configurations for the selected bridge were identified. All five structural configurations were analysed under 3 different soil profiles which are taken from some of the locations in the Central Expressway in Sri Lanka. Some empirical equations were used to assess geotechnical aspects in terms of load carrying capacity and the expected settlement. Meanwhile, Midas Civil 2020 software was used for the structural analysis, while Euro code was referred for the structural design. Based on the results presented in this paper, it is evident that, pile cap with friction piles can be used conveniently, if proper controlled driving of piles is done.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"160 1","pages":"286-291"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87550456","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}

引用次数: 0