2021 Moratuwa Engineering Research Conference (MERCon)最新文献_第7页

Spatial analysis of COVID-19 and socio-economic factors in Sri Lanka 斯里兰卡COVID-19和社会经济因素的空间分析

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525771

R. Perera, H. Weligampola, U. Marikkar, Suren Sritharan, R. Godaliyadda, Parakrama B. Ekanayake, V. Herath, A. Rathnayake, S. Dharmaratne

引用次数: 0

Comparative Study on Cure, Mechanical and Dynamic-Mechanical Properties of Natural Rubber Compounds Formulated with DIXP, TBzTD, ZBeC and TBBS Accelerators DIXP、TBzTD、ZBeC和TBBS促进剂对天然橡胶胶料固化、力学和动态力学性能的影响

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525685

Hasara Samarasinghe, S. Walpalage, D. Edirisinghe, S. Egodage

{"title":"Comparative Study on Cure, Mechanical and Dynamic-Mechanical Properties of Natural Rubber Compounds Formulated with DIXP, TBzTD, ZBeC and TBBS Accelerators","authors":"Hasara Samarasinghe, S. Walpalage, D. Edirisinghe, S. Egodage","doi":"10.1109/MERCon52712.2021.9525685","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525685","url":null,"abstract":"Today, it is obligatory to replace nitrosamine releasing traditional accelerators owing to the various health, safety and environment regulations and surviving with safe alternative is a one of the key challenges in the rubber industry. In this work four groups of commercially available nitrosamine free/safe accelerators were selected, i,e., diisopropyl xanthogen polysulfide (DIXP), tetrabenzyl thiuramdisulfide (TBzTD), zinc dibenzyl dithiocarbamate (ZBeC) and N-tert-butyl-2-benzothiazole sulfenamide (TBBS). The effect of accelerator type on cure, crosslink density, physico-mechanical and dynamic-mechanical properties of efficient sulfur vulcanized natural rubber (NR) compounds was investigated. Results reveal that accelerator type does not only affect the cure characteristics, but also has a great impact on physical and mechanical properties, DIXP possess the least modulus and strength properties while providing satisfactory optimum cure time for the vulcanization compared to the TBBS accelerator. Improvement in mechanical properties is observed in the order ZBeC, TBzTD, TBBS and corroborates well with the crosslink density. ZBeC and TBzTD show relatively higher hardness, storage modulus and lower hysteresis in the rubbery region indicating different microstructure arrangement compared to commonly use of non-regulated nitrosamine safe TBBS accelerated vulcanizates.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"34 1","pages":"321-326"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80409839","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

Study On The Applicability Of Capacity Estimation Methods To Evaluate Multilane Highway Capacity Under Heterogeneous Conditions 非均匀条件下多车道公路通行能力评价方法的适用性研究

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525674

U. L. M. A. Uswaththa, H. Pasindu, J. Bandara, D. Jayaratne

{"title":"Study On The Applicability Of Capacity Estimation Methods To Evaluate Multilane Highway Capacity Under Heterogeneous Conditions","authors":"U. L. M. A. Uswaththa, H. Pasindu, J. Bandara, D. Jayaratne","doi":"10.1109/MERCon52712.2021.9525674","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525674","url":null,"abstract":"Highway capacity is an essential element in highway planning and traffic management. There are a number of methods developed to estimate highway capacity. Most of them focus on identifying the maximum flow or throughput using a traffic speed-flow model. However, it has been found that these capacity estimates are not practical as they cannot be sustained for long, under normal flow conditions. This research mainly focuses on using the breakdown probability approach, in capacity estimation methods which are currently used to estimate the capacity mainly for freeways. Breakdown probability methods such as the Product Limit Method (PLM), the Sustained Flow Index (SFI), the Highway Capacity Manual (HCM) method are used to check the applicability of the breakdown probability approach in calculating highway capacity under heterogeneous conditions. These breakdown probability methods were applied for data collected from two multilane highway locations where heterogeneous flow conditions were observed. The capacity values obtained through the breakdown probability approach were compared with the capacity values obtained from the Greenberg model which is the considered conventional method. The breakdown approach resulted in capacity values which are less by an overall range of 7.4% to 30.9% for both locations.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"46 1","pages":"474-479"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83691347","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

An Analytical Design & Optimization approach to enhance Warehouse Operations 一个分析设计和优化方法，以提高仓库运作

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525679

Sadna Dissanayake, T. Rupasinghe

引用次数: 0

Feasibility Study on, Enablers and Barriers for the Implementation of Lean Construction and the Applicability of Visual Management Practices Through Forms of Digital Communication in the Sri Lankan Industry 斯里兰卡工业通过数字通信形式实施精益建设和可视化管理实践适用性的可行性研究、推动因素和障碍

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525758

D. Kariyawasam, Chandana Siriwardana

{"title":"Feasibility Study on, Enablers and Barriers for the Implementation of Lean Construction and the Applicability of Visual Management Practices Through Forms of Digital Communication in the Sri Lankan Industry","authors":"D. Kariyawasam, Chandana Siriwardana","doi":"10.1109/MERCon52712.2021.9525758","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525758","url":null,"abstract":"Even though the implementation of lean practices into the construction framework have many advantages, thus far, the use of lean in the Sri Lankan construction industry is seldom and infrequent. Though many success stories exist around the world on implementing Lean Construction (LC), why the concept is untapped in Sri Lankan context require a thorough and in-depth understanding on the Barriers for LC implementation. In this study, a comprehensive analysis is done on identifying and assessing the possible factors that affect the application of LC, and factors to overcome those barriers based on an extensive literature review followed by a statistical analysis of data from a questionnaire survey which targeted professionals in the industry. From the results obtained from the questionnaire a recommendation was made on integrating Visual Management (VM) practices through means of digital communication as a lean tool, and the feasibility of the application was appraised through a questionnaire survey where a favourable result was obtained. The outcome of this study could help companies to overcome barriers and focus their attention and resources on the significant issues, crucial to support the successful implementation of LC and develop a framework to integrate Visual Management practices into digital communication.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"34 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77115114","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

Synthesis and Characterization of Chitosan/Hydroxyapatite Nanocomposite for Bone Tissue Engineering Applications 骨组织工程用壳聚糖/羟基磷灰石纳米复合材料的合成与表征

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525699

H. Rajapakse, S. Adikary

{"title":"Synthesis and Characterization of Chitosan/Hydroxyapatite Nanocomposite for Bone Tissue Engineering Applications","authors":"H. Rajapakse, S. Adikary","doi":"10.1109/MERCon52712.2021.9525699","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525699","url":null,"abstract":"Chitosan/nanohydroxyapatite composite was synthesized by co-precipitation of nanohydroxyapatite onto a chitosan scaffold. The aim of this research was to extract chitosan from locally sourced shrimp shells species Penaeus Monodon and to synthesize chitosan/nanohydroxyapatite composite. The morphology, crystalline structure and composition of the composites were investigated using Scanning electron microscopic analysis, X-ray diffractometry, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Hydroxyapatite nanoparticles dispersed in the chitosan matrix were observed in the scanning electron microscope (SEM). The size of the nanohydroxyapatite particles was estimated to be 13 nm by the X-ray diffractometer pattern using the Halder-Wagner method and this value was confirmed by the SEM images. From the energy dispersive X-ray analysis, the Ca/P weight ratio obtained was around 2 which equivalents to that of hydroxyapatite. The thermogravimetric analysis measurements of the composites concluded that the decomposition temperature decreases with increasing Hydroxyapatite content.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"50 1","pages":"555-560"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77115252","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: 1

Study of Moisture Transport in Rice Cooking 大米蒸煮过程中水分运移的研究

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525735

H.P.A. Jayamini, J. Weliwita, M. Narayana, S. Witharana, N. Hettiarachchi

引用次数: 0

Question Classification for the Travel Domain using Deep Contextualized Word Embedding Models 基于深度语境化词嵌入模型的旅游领域问题分类

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525789

Charmy Weerakoon, Surangika Ranathunga

{"title":"Question Classification for the Travel Domain using Deep Contextualized Word Embedding Models","authors":"Charmy Weerakoon, Surangika Ranathunga","doi":"10.1109/MERCon52712.2021.9525789","DOIUrl":"https://doi.org/10.1109/MERCon52712.2021.9525789","url":null,"abstract":"Question answering can be considered as a key area in Natural Language Processing and Information Retrieval, where users construct queries in natural language and receive suitable answers in return. In the travel domain, most questions are “content questions”, where the expected answer is not the equivalent of “yes” or “no”, but rather factual information. Replying to a free-form factual question based on a large collection of text is challenging. Previous research has shown that the accuracy of question answering systems can be improved by adding a classification phase based on the expected answer type. This paper focuses on implementing a multi-level, multi-class question classification system focusing on the travel domain. Existing research for the travel domain is conducted using language-specific features and traditional Machine Learning models. In contrast, this research employs transformer-based state-of-the-art deep contextualized word embedding models for question classification. The proposed method improves the coarse class Micro F1-Score by 5.43% compared to the baseline. Fine-grain Micro F1-Score has also improved by 3.8%. We also present an empirical analysis of the effectiveness of different transformer-based deep contextualized word embedding models for multi-level multi-class classification.","PeriodicalId":6855,"journal":{"name":"2021 Moratuwa Engineering Research Conference (MERCon)","volume":"24 1","pages":"573-578"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77828962","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

Fire performance of CFRP/Concrete composites insulated with recycled EPS-cement blend 用再生eps -水泥混合料保温CFRP/混凝土复合材料的防火性能

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525684

A. Selvaratnam, K. K. Arachchi, J. Gamage

引用次数: 1

Short-Term Traffic Forecasting using LSTM-based Deep Learning Models 基于lstm的深度学习模型的短期交通预测

2021 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2021-07-27 DOI: 10.1109/MERCon52712.2021.9525670

D. Haputhanthri, A. Wijayasiri

引用次数: 8