Pub Date : 2018-05-01DOI: 10.1109/MERCON.2018.8421943
C. Jayawardena, S. Thiruchittampalam, Abn Dassanayake, A. Abeysinghe, W. Wimalarathna
Site closure and rehabilitation is seldom practiced in Sri Lankan quarrying industry. Hence, open craters filled with water and garbage, having steep unstable slopes represent most of the abandoned quarry sites, raising public health and safety concerns additionally to unpleasant environments. Traditional rehabilitation methods are rarely applicable for such circumstances due to unique socio-economic conditions and stakeholder aspirations. This study is an assessment on the feasibility of outcrop excavations adjoining the abandoned and isolated quarry sites, to establish relatively flat ground conditions, in rural Sri Lanka. The results reveal possibilities of establishing mega-quarry sites on selected locations in Anuradhapura District to produce large quantities of aggregates and useful land masses for future development while ensuring safe environment for the local communities.
{"title":"A Proximity Based Rehabilitation Approach for Abandoned Quarries in Rural Sri Lanka","authors":"C. Jayawardena, S. Thiruchittampalam, Abn Dassanayake, A. Abeysinghe, W. Wimalarathna","doi":"10.1109/MERCON.2018.8421943","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421943","url":null,"abstract":"Site closure and rehabilitation is seldom practiced in Sri Lankan quarrying industry. Hence, open craters filled with water and garbage, having steep unstable slopes represent most of the abandoned quarry sites, raising public health and safety concerns additionally to unpleasant environments. Traditional rehabilitation methods are rarely applicable for such circumstances due to unique socio-economic conditions and stakeholder aspirations. This study is an assessment on the feasibility of outcrop excavations adjoining the abandoned and isolated quarry sites, to establish relatively flat ground conditions, in rural Sri Lanka. The results reveal possibilities of establishing mega-quarry sites on selected locations in Anuradhapura District to produce large quantities of aggregates and useful land masses for future development while ensuring safe environment for the local communities.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"600 1","pages":"247-252"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77279940","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}
Pub Date : 2018-05-01DOI: 10.1109/MERCON.2018.8421896
R. Silva, Asela Dasanayaka, R. Ragel, A. Bandaranayake
Wireless Sensor Networks (WSN) are being widely used for sensing physical parameters in a broad geographical area. The person who needs WSN will have a pictorial idea of the sensor network. The problem in the traditional method is that the person who needs the WSN should explain the pictorial view of the sensor network to a commercial vendor and buy it from them or they should design it from the scratch. What we proposed in our solution is to develop a platform so that the person who needs the WSN can directly draw the pictorial view on a canvas and then it can automatically generate all the required firmware for the microcontrollers and wiring diagrams. The user is then required only to follow a few instructions to complete the real world implementation of WSNs. This paper is about developing a visual platform to design WSNs. The WSN designing platform was built as a web application, so it can manage a large number of supported sensors and microcontrollers. This means that if one user adds the device driver for any sensor or a microcontroller the other users can directly use it from the WSN design platform without worrying about hardware programming. Further, if anyone needs a new sensor or microcontroller to be supported by this visual design platform, this design tool will have interfaces to directly add new sensors and microcontrollers. The proposed method is affordable for developing custom wireless sensor networks.
{"title":"Visual Design Platform for Wireless Sensor Network","authors":"R. Silva, Asela Dasanayaka, R. Ragel, A. Bandaranayake","doi":"10.1109/MERCON.2018.8421896","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421896","url":null,"abstract":"Wireless Sensor Networks (WSN) are being widely used for sensing physical parameters in a broad geographical area. The person who needs WSN will have a pictorial idea of the sensor network. The problem in the traditional method is that the person who needs the WSN should explain the pictorial view of the sensor network to a commercial vendor and buy it from them or they should design it from the scratch. What we proposed in our solution is to develop a platform so that the person who needs the WSN can directly draw the pictorial view on a canvas and then it can automatically generate all the required firmware for the microcontrollers and wiring diagrams. The user is then required only to follow a few instructions to complete the real world implementation of WSNs. This paper is about developing a visual platform to design WSNs. The WSN designing platform was built as a web application, so it can manage a large number of supported sensors and microcontrollers. This means that if one user adds the device driver for any sensor or a microcontroller the other users can directly use it from the WSN design platform without worrying about hardware programming. Further, if anyone needs a new sensor or microcontroller to be supported by this visual design platform, this design tool will have interfaces to directly add new sensors and microcontrollers. The proposed method is affordable for developing custom wireless sensor networks.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"84 1","pages":"384-389"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75805700","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}
Pub Date : 2018-05-01DOI: 10.1109/MERCON.2018.8421956
H. Rupasinghe, T. M. Rengarasu
Driving cycle construction has become more popular around the world to estimate pollution emission and traffic analysis. This paper presents the traffic based analysis related to performance of B128 and B130 route in Galle, Sri Lanka using basic traffic engineering parameters such as travel time, average and maximum speed, average acceleration and deceleration. So the main objective of this paper is to identify traffic related parameters of above routes at Galle. The driving data was collected using on board measurement method by installing a prototype GPS tracking device in light-duty cars (AXIO, AQUA, FIT, Vitz). The cycle construction was done according to the segment based cycle construction method and roads were segmented considering the major intersections. Driving cycles were constructed for morning peak, noon peak, evening peak and off peak hours in B130 route and off peak hours in B128 route and the travel time, average speed, maximum speed, average acceleration and average deceleration were obtained. According to results, the maximum average speed of 27.53 km/h was obtained at off peak hours and travel time of 892s is taken to travel from Hapugala junction to Galle in noon peak hours. However the maximum speed was obtained at noon peak hours.
{"title":"Development of Driving Cycles for Galle","authors":"H. Rupasinghe, T. M. Rengarasu","doi":"10.1109/MERCON.2018.8421956","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421956","url":null,"abstract":"Driving cycle construction has become more popular around the world to estimate pollution emission and traffic analysis. This paper presents the traffic based analysis related to performance of B128 and B130 route in Galle, Sri Lanka using basic traffic engineering parameters such as travel time, average and maximum speed, average acceleration and deceleration. So the main objective of this paper is to identify traffic related parameters of above routes at Galle. The driving data was collected using on board measurement method by installing a prototype GPS tracking device in light-duty cars (AXIO, AQUA, FIT, Vitz). The cycle construction was done according to the segment based cycle construction method and roads were segmented considering the major intersections. Driving cycles were constructed for morning peak, noon peak, evening peak and off peak hours in B130 route and off peak hours in B128 route and the travel time, average speed, maximum speed, average acceleration and average deceleration were obtained. According to results, the maximum average speed of 27.53 km/h was obtained at off peak hours and travel time of 892s is taken to travel from Hapugala junction to Galle in noon peak hours. However the maximum speed was obtained at noon peak hours.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"157 1","pages":"108-113"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74770911","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}
Pub Date : 2018-05-01DOI: 10.1109/MERCON.2018.8421962
L. Weerasinghe, D. Chathuranga
Tactile Sensors play a crucial role in developing robots with human like grasping and manipulation capabilities. Localization, dynamic sensing and good force recognition characteristics are major goals when designing a tactile sensor. However, fulfilling these requirements come at the cost of increased complexity in design, high cost and difficulties in practical implementation due to size. In this research a sensor has been developed that is based on the concept of Hall effect. An array of magnets and hall sensors create a unique combination of outputs for each different deformation of the dual layered silicon membrane which houses the magnets. While allowing the interaction with non-planar surfaces due to the compliant nature of the silicon material, the sensor also facilitates accurate force recognition and localization with super-resolution using sensor readings, geometry and elastic properties of the silicon layer. This paper contains the design, fabrication and calibration of the tactile sensor array.
{"title":"Development and Characterization of a Soft Tactile Sensor Array Used for Parallel Grippers","authors":"L. Weerasinghe, D. Chathuranga","doi":"10.1109/MERCON.2018.8421962","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421962","url":null,"abstract":"Tactile Sensors play a crucial role in developing robots with human like grasping and manipulation capabilities. Localization, dynamic sensing and good force recognition characteristics are major goals when designing a tactile sensor. However, fulfilling these requirements come at the cost of increased complexity in design, high cost and difficulties in practical implementation due to size. In this research a sensor has been developed that is based on the concept of Hall effect. An array of magnets and hall sensors create a unique combination of outputs for each different deformation of the dual layered silicon membrane which houses the magnets. While allowing the interaction with non-planar surfaces due to the compliant nature of the silicon material, the sensor also facilitates accurate force recognition and localization with super-resolution using sensor readings, geometry and elastic properties of the silicon layer. This paper contains the design, fabrication and calibration of the tactile sensor array.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"2 1","pages":"102-107"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81510614","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}
Pub Date : 2018-05-01DOI: 10.1109/MERCON.2018.8421986
I.P. Samarappuli, N. Liyanage
Effect of 1,4–dimethylpiperazine as a catalyst in producing polyether foam was investigated. Reference samples were produced from polyol, methylene di isocyanate (MDI), triethylene diamine (as a control catalyst), distilled water, and silicone oil using laboratory mix formulation based on polyether based polyol system. Standard sample dimensions for density test, tensile strength and elongation tests were produced from the samples. The various tests were carried out on the samples using the ASTM-D3574 standards. It was observed that 1,4-dimethylpiperazine has comparatively low gelling and blowing action compared to triethylene diamine. It is concluded that)1,4-dimethylpiperazine is a good delayed action catalyst which is found to be better for in-mold flowability and slow cure times with comparable foam properties.
{"title":"Evaluation of the Suitability of 1, 4-dimethylpiperazine as a Substitute Catalyst in Polyurethane Foam Production","authors":"I.P. Samarappuli, N. Liyanage","doi":"10.1109/MERCON.2018.8421986","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421986","url":null,"abstract":"Effect of 1,4–dimethylpiperazine as a catalyst in producing polyether foam was investigated. Reference samples were produced from polyol, methylene di isocyanate (MDI), triethylene diamine (as a control catalyst), distilled water, and silicone oil using laboratory mix formulation based on polyether based polyol system. Standard sample dimensions for density test, tensile strength and elongation tests were produced from the samples. The various tests were carried out on the samples using the ASTM-D3574 standards. It was observed that 1,4-dimethylpiperazine has comparatively low gelling and blowing action compared to triethylene diamine. It is concluded that)1,4-dimethylpiperazine is a good delayed action catalyst which is found to be better for in-mold flowability and slow cure times with comparable foam properties.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"20 1","pages":"282-286"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85560293","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}
Neural Machine Translation (NMT) is the current state-of-the-art machine translation technique. However, applicability of NMT for language pairs that have high morphological variations is still debatable. Lack of language resources, especially a sufficiently large parallel corpus causes additional issues, which leads to very poor translation performance, when NMT is applied to languages with high morphological variations. In this paper, we present three techniques to improve domain-specific NMT performance of the under-resourced language pair Sinhala and Tamil that have high morphological variations. Out of these three techniques, transliteration is a novel approach to improve domain-specific NMT performance for language pairs such as Sinhala and Tamil that share a common grammatical structure and have moderate lexical similarity. We built the first transliteration system for Sinhala to English and Tamil to English, which provided an accuracy of 99.6%, when tested with the parallel corpus we used for NMT training. The other technique we employed is Byte Pair Encoding (BPE), which is a technique that has been used to achieve open vocabulary translation with a fixed vocabulary of subword symbols. Our experiments show that while the translation based on independent BPE models and pure transliteration perform moderately, integrating transliteration to build a joint BPE model for the aforementioned language pair increases the translation quality by 1.68 BLEU score.
{"title":"Transliteration and Byte Pair Encoding to Improve Tamil to Sinhala Neural Machine Translation","authors":"Pasindu Tennage, Achini Herath, Malith Thilakarathne, Prabath Sandaruwan, Surangika Ranathunga","doi":"10.1109/MERCON.2018.8421939","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421939","url":null,"abstract":"Neural Machine Translation (NMT) is the current state-of-the-art machine translation technique. However, applicability of NMT for language pairs that have high morphological variations is still debatable. Lack of language resources, especially a sufficiently large parallel corpus causes additional issues, which leads to very poor translation performance, when NMT is applied to languages with high morphological variations. In this paper, we present three techniques to improve domain-specific NMT performance of the under-resourced language pair Sinhala and Tamil that have high morphological variations. Out of these three techniques, transliteration is a novel approach to improve domain-specific NMT performance for language pairs such as Sinhala and Tamil that share a common grammatical structure and have moderate lexical similarity. We built the first transliteration system for Sinhala to English and Tamil to English, which provided an accuracy of 99.6%, when tested with the parallel corpus we used for NMT training. The other technique we employed is Byte Pair Encoding (BPE), which is a technique that has been used to achieve open vocabulary translation with a fixed vocabulary of subword symbols. Our experiments show that while the translation based on independent BPE models and pure transliteration perform moderately, integrating transliteration to build a joint BPE model for the aforementioned language pair increases the translation quality by 1.68 BLEU score.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"35 1","pages":"390-395"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85683470","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}
Pub Date : 2018-05-01DOI: 10.1109/MERCON.2018.8421977
N.M. Nawfi, N. Sarusan, S. Piyathilake, V. Sivahar, R. Munasinghe
Even though the engineering structures are designed to achieve the potential to be very durable and capable of withstanding the degradation caused by adverse environmental conditions, failures in the structures do still happen; predominantly due to corrosion. Even though there are many conventional methods to evaluate the degree of corrosion, most of them are destructive. Though there are significant efforts made to estimate the degree of corrosion nondestructively, reliable methods are yet to be established especially, for hidden or inaccessible corrosion. Moreover, the available methods, whether destructive or nondestructive, focus only on the surface corrosion (except in the cases of intergranular corrosion [IGC] of stainless steel) completely ignoring the corrosion pits that form beyond the limits of surface corrosion. Hence, this study includes these corrosion pits in estimating the degree of corrosion. In this study, selected steel samples were subjected to accelerated corrosion conditions and then tested ultrasonically. Ultrasonic longitudinal wave velocity to shear wave velocity ratio and the attenuation coefficient were measured using Ultrasonic Flaw Detector. These measurements were done even after removing the corrosion products from the surface. SEM analysis and the conventional weight loss measurements were also carried out. The correlations obtained between the degree of corrosion and ultrasonic parameters are presented.
{"title":"Remote Estimation of Degree of Corrosion Using Ultrasonic Pulse Echo Methods","authors":"N.M. Nawfi, N. Sarusan, S. Piyathilake, V. Sivahar, R. Munasinghe","doi":"10.1109/MERCON.2018.8421977","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421977","url":null,"abstract":"Even though the engineering structures are designed to achieve the potential to be very durable and capable of withstanding the degradation caused by adverse environmental conditions, failures in the structures do still happen; predominantly due to corrosion. Even though there are many conventional methods to evaluate the degree of corrosion, most of them are destructive. Though there are significant efforts made to estimate the degree of corrosion nondestructively, reliable methods are yet to be established especially, for hidden or inaccessible corrosion. Moreover, the available methods, whether destructive or nondestructive, focus only on the surface corrosion (except in the cases of intergranular corrosion [IGC] of stainless steel) completely ignoring the corrosion pits that form beyond the limits of surface corrosion. Hence, this study includes these corrosion pits in estimating the degree of corrosion. In this study, selected steel samples were subjected to accelerated corrosion conditions and then tested ultrasonically. Ultrasonic longitudinal wave velocity to shear wave velocity ratio and the attenuation coefficient were measured using Ultrasonic Flaw Detector. These measurements were done even after removing the corrosion products from the surface. SEM analysis and the conventional weight loss measurements were also carried out. The correlations obtained between the degree of corrosion and ultrasonic parameters are presented.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"1 1","pages":"312-317"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80750455","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}
Pub Date : 2018-05-01DOI: 10.1109/MERCON.2018.8421954
Darshana Priyasad, Yohan Jayasanka, Hareen Udayanath, D. Jayawardhana, S. Sooriyaarachchi, C. Gamage, N. Kottege
Autonomous navigation is highly important in robotics, especially when it comes to the robotic applications in disaster management etc. There are many algorithms to implement autonomous navigation and most of them are dependent on prior knowledge of the environment and apriori maps. Although they are effective in some scenarios, these algorithms fail to perform when the environment has been subjected to changes that might invalidate the prior map. This paper presents a point cloud based algorithm which can be used in a situation where the prior knowledge of the environment is highly inaccurate. The proposed algorithm uses depth images to get a local map, which it expands by searching for uncharted areas picking the next best location to explore using a breadth first approach given a set of constraints. The proposed algorithm exploits the maps in the 3D space allowing the navigation system to perform effectively in uneven terrains and use inclined planes for its advantage.
{"title":"Point Cloud Based Autonomous Area Exploration Algorithm","authors":"Darshana Priyasad, Yohan Jayasanka, Hareen Udayanath, D. Jayawardhana, S. Sooriyaarachchi, C. Gamage, N. Kottege","doi":"10.1109/MERCON.2018.8421954","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421954","url":null,"abstract":"Autonomous navigation is highly important in robotics, especially when it comes to the robotic applications in disaster management etc. There are many algorithms to implement autonomous navigation and most of them are dependent on prior knowledge of the environment and apriori maps. Although they are effective in some scenarios, these algorithms fail to perform when the environment has been subjected to changes that might invalidate the prior map. This paper presents a point cloud based algorithm which can be used in a situation where the prior knowledge of the environment is highly inaccurate. The proposed algorithm uses depth images to get a local map, which it expands by searching for uncharted areas picking the next best location to explore using a breadth first approach given a set of constraints. The proposed algorithm exploits the maps in the 3D space allowing the navigation system to perform effectively in uneven terrains and use inclined planes for its advantage.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"45 1","pages":"318-323"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80280459","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}
Pub Date : 2018-05-01DOI: 10.1109/MERCON.2018.8421891
K.A.S.M. Kandemulla, A.R.L. Maduwantha, E. Fernando, S. N. Niles, T. Jayawardana
Dimensional change of a woven fabric is a challenge in woven fabric production. The phenomenon originates from the dimensional instability of the fabric. Shrinkage is a combined result of numerous factors such as relaxation, dyeing, finishing and the effect of machinery. The significance of this problem has been investigated by several researchers, who focused mainly on the geometry of the fabric during the weaving phase (loom stage) only. To investigate the dimensional changes that occur within a particular woven structure, a number of fabric samples were sent through various finishing processes such as, washing, dyeing & finishing, under the laboratory conditions. The changes were measured either in terms of dimensional change or EPI and PPI values. Using the experimental data and theoretical analysis, a mathematical model has been developed and validated. However initially the focus is laid on plain woven fabrics and it is expected to be further extended to the other woven structures as well.
{"title":"Analysis of the Dimensional Change of Woven Fabrics from Loom State to Finished State","authors":"K.A.S.M. Kandemulla, A.R.L. Maduwantha, E. Fernando, S. N. Niles, T. Jayawardana","doi":"10.1109/MERCON.2018.8421891","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421891","url":null,"abstract":"Dimensional change of a woven fabric is a challenge in woven fabric production. The phenomenon originates from the dimensional instability of the fabric. Shrinkage is a combined result of numerous factors such as relaxation, dyeing, finishing and the effect of machinery. The significance of this problem has been investigated by several researchers, who focused mainly on the geometry of the fabric during the weaving phase (loom stage) only. To investigate the dimensional changes that occur within a particular woven structure, a number of fabric samples were sent through various finishing processes such as, washing, dyeing & finishing, under the laboratory conditions. The changes were measured either in terms of dimensional change or EPI and PPI values. Using the experimental data and theoretical analysis, a mathematical model has been developed and validated. However initially the focus is laid on plain woven fabrics and it is expected to be further extended to the other woven structures as well.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"1 1","pages":"90-95"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87378124","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}
Pub Date : 2018-05-01DOI: 10.1109/MERCON.2018.8421888
Wageesha Manamperi, Dinesha Karunathilake, Thilini Madhushani, Nimasha Galagedara, D. Dias
This paper presents the development of a Sinhala Speech Recognition System to be deployed in an Interactive Voice Response (IVR) system of a telecommunication service provider. The main objectives are to recognize Sinhala digits and names of Sinhala songs to be set up as ringback tones. Sinhala being a phonetic language, its features are studied to develop a list of 47 phonemes. A continuous speech recognition system is developed based on Hidden Markov Model (HMM). The acoustic model is trained using the voice through mobile phone. The outcome is a speaker independent speech recognition system which is capable of recognizing 10 digits and 50 Sinhala songs. A word error rate (WER) of 11.2% using a speech corpus of 0.862 hours and a sentence error rate (SER) of 5.7% using a speech corpus of 1.388 hours are achieved for digits and songs respectively.
{"title":"Sinhala Speech Recognition for Interactive Voice Response Systems Accessed Through Mobile Phones","authors":"Wageesha Manamperi, Dinesha Karunathilake, Thilini Madhushani, Nimasha Galagedara, D. Dias","doi":"10.1109/MERCON.2018.8421888","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421888","url":null,"abstract":"This paper presents the development of a Sinhala Speech Recognition System to be deployed in an Interactive Voice Response (IVR) system of a telecommunication service provider. The main objectives are to recognize Sinhala digits and names of Sinhala songs to be set up as ringback tones. Sinhala being a phonetic language, its features are studied to develop a list of 47 phonemes. A continuous speech recognition system is developed based on Hidden Markov Model (HMM). The acoustic model is trained using the voice through mobile phone. The outcome is a speaker independent speech recognition system which is capable of recognizing 10 digits and 50 Sinhala songs. A word error rate (WER) of 11.2% using a speech corpus of 0.862 hours and a sentence error rate (SER) of 5.7% using a speech corpus of 1.388 hours are achieved for digits and songs respectively.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"333 1","pages":"241-246"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76596608","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}
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