ERU - 2021
Permanent URI for this collectionhttp://192.248.9.226/handle/123/16657
Browse
Recent Submissions
- item: Conference-Extended-AbstractWood splitting machine for tea and bakery industries(2021-09-06) Lankapura, WKIn Sri Lanka, firewood is regarded as a common conventional fuel, mainly in food preparation purposes. Essentially due to economically availability, firewood has still been using as the main source to lit fire in rural areas. Other than for household food preparation, firewood is still the main source of generating heat in food related rural industries, such as tea factories, bakeries, hotels etc.
- item: Conference-Extended-AbstractSimulation of natural fibers/waste paper composites to use as kraft papers(2021-09-06) Madhushani, RK; Udayakumara, SV; Dilhari, BAThe consumption of papers in various applications has been increased rapidly during the past decades. To produce one ton of paper; 12 trees, 540 000 liters of water, fuel consumption for transporting the trees are used whereas 10 liters of water is needed to make one A4 paper [1]. Thus during paper production natural resources are enormously utilized as well as many chemicals are involved in the process.
- item: Conference-Extended-AbstractSecond-Hand fashion consumption(2021-09-06) Geegamage, T; Ranaweera, HRA; Halwatura, RUThe 2019 Pulse of the fashion industry report discovers that the series of sustainability progress in the industry of fashion has slowed by third in the previous year and not moving fast to counter balance the misdeed impact of rapid growth in the fashion industry. Fashion industry will be the net contributor for the climate change, increasing the obstacles which that promising of keeping global warming below one and half degrees Celsius during the reminding years will be not achieved if this circumstance of the fashion industry continue in the future, as long as fashion industry ranks the first place out of environment polluting industries.
- item: Conference-Extended-AbstractInvestigation on the effect of different channel geometries of thermal wheel for energy transfer efficiency(2021-09-06) Polgolla, AMCK; Herath, HMDP; Wickramasinghe, MDA; Wijewardane, MA; Ranasinghe, RACPInside buildings, heating, ventilation, and air conditioning systems are utilized to provide a comfortable environment. However, they account for a significant percentage of overall total energy consumption: in the United States, they account for about 50% of building final energy consumption and 20% of total energy consumption. [1]. The installation of a heat exchanger between the exhaust and fresh air streams is critical, owing to the significant energy savings. [2], [3]. Thermal wheels have recently gotten a lot of attention because of their high efficiency and low-pressure loss when compared to other energy recovery solutions [4]. The goal of this research is to give a comprehensive study and optimization of Thermal wheel design, with the goal of enhancing sensible effectiveness while reducing pressure loss based on channel shape.
- item: Conference-Extended-AbstractFluoride releasing kinetics in a weathered bearing biotite gneiss(2021-09-06) Madusanka, MHA; Sadanayake, S; Vithanage, MIn several regions of the dry zone of Sri Lanka, excessive quantities of fluoride (F-) in groundwater have affected the water quality significantly. Apart from the well-known prevalence of dental fluorosis, Chronic Kidney Disease of uncertain etiology (CKDu) is widespread in different pockets in the dry zone of Sri Lanka.
- item: Conference-Extended-AbstractExperimental study on load bearing capacity of cement stabilized unburnt clay bricks(2021-09-06) Mohamed, JZ; Kuruppu, KABPClay brick is one of the most widely used conventional materials in the masonry construction throughout the world. Despite living in cement age, bricks still have a defined space in our societies. Clay bricks are good for construction activities in dry zones because of its better thermal insulation and moisture control properties. With around 39 percent of the home’s energy use going towards maintaining a pleasant temperature, it has become increasingly important to build a home that will minimize the energy required for heating and cooling, from both a cost savings and sustainability perspective [1]. Bricks made with clay material can be the better option to neutralize the above condition since bricks offer superior thermal mass.
- item: Conference-Extended-AbstractDevelopment of a scaled vehicle Model for dynamics testing(2021-09-06) Hewavithana, RR; Ravihara, JPL; Wishwajith, KKS; Perera, ULS; Dasanayake, NP; Gamage, JRThe interest in using scaled models for dynamics testing of prototype vehicles is growing due to the high demand for autonomous driving. In the early design phases, vehicle testing is done using computer simulations. Even though computer simulations are proven to be extremely helpful in designing prototypes, simulation models need to be validated using realworld testing. There are high costs involved in vehicle testing and it’s dangerous to conduct aggressive driving manoeuvres with real drivers.
- item: Conference-Extended-AbstractDeveloping a National Eco-System for sustainable vegatable supply chain in Sri Lanka(2021-09-06) Gunarathne, RT; Bandara, YMFruits and vegetables supply chain in Sri Lanka has always been a contemporary topic due to its significant value to the economy of the country. The existing fruits and vegetables supply chain is already suffering from dilemmas such as high price fluctuations, excess supply and wastage, involvement of large number of intermediaries and lack of infrastructure. The recent Covid-19 pandemic has put a tremendous pressure on already trembling supply chains. Sudden lock downs have led to disruption of existing distribution channels resulting farmers throwing away millions of tons of fresh fruits and vegetables while consumers in urban areas paying extremely high prices for fresh produce. The current situations clearly demonstrate the need for a more responsive and integrated vegetables supply chain for Sri Lanka. This paper attempts to create a conceptual model for the vegetable supply chain ecosystem for Sri Lanka.
- item: Conference-Extended-AbstractDesign and development of a novel fixturing solution for handling complex shaped components(2021-09-06) Dharmathilaka, SPIE; Devasurendra, SN; Chathuranga, PK; Kulasekera, AL; Jayaweera, NDFixturing is one of the key subprocesses used in many industries such as aerospace, automobile and marine engineering. Most existing fixturing systems use pin-type end effectors which apply concentrated loads (See Fig. 1. (Left)) on objects resulting in geometrical distortions [1]. Granular jamming is a novel fixturing technique used in the field of soft robotics [3]. We propose the use of granular jamming for developing a fixturing system which minimizes the structural deformation and surface damage prevalent in pin type fixturing.
- item: Conference-Extended-AbstractClassification of breast cancer tumors using feature selection and CNN(2021-09-06) Anparasy, SBreast cancer is one of the most dangerous diseases in the world and almost two million new cases are diagnosed every year. It starts from the breasts tissue and then spreads to other parts of the body. Early detection of breast cancer is important to save the life of a woman as it is related with a risen number of available treatment options. Benign and malignant are the major types of tumors and they are cancerous and non-cancerous, respectively. Benign is not dangerous since it does not destroy the nearby tissues and cannot spread or grow. Malignant tumor invades neighbouring tissues, blood vessels and spreads to other parts of the body by metastasis. Therefore, differentiating malignant from benign will help to detect breast cancer in its early stage. Nowadays, machine learning techniques are used to classify the tumor types hence the quality of lift is increased. Several years ago, there were so many breast cancer detection approaches proposed. These approaches are proposed by using one of the two types of dataset available such as medical imaging data and feature distribution data. In imaging data, the tumor portion is cropped and then detects whether it is cancer or not. In feature distribution data, multivariate attributes were taken from the digitized image of a Fine Needle Aspirate (FNA) of a breast mass to detect the cancer tumor. Those attributes are describe the characteristics of the cell nuclei present in the digitized image. Medical imaging related research requires more time and medical knowledge, therefore many authors chose the feature distribution dataset[11] to their research. The remaining parts of this paper are assigned as follows. Section 2 gives Related work of this research. Section 3 describes the methodology of this research such as pre-processing, classification model and performance evaluation criteria. Section 4 gives experimental setup as the details about the dataset and the experimental results. Finally, Section 5 gives the conclusion of this research.
- item: Conference-Extended-AbstractAutomating incident categorization in a support request system(9/6/2021) Cooray, TMTM; Ariyaratne, MKA; Perera, MDRWith the expansion of the role of IT, organizations tend to maintain a support request system/ Issue Tracking System (ITS) to handle issues. ITSs are designed to streamline the process of customer support and keep a track of all the reported issues. Incident Management (IM) makes efforts to re-establish standard business operations reducing the impact and maintaining the quality and availability [1]. An incident also refers to a ticket. The manual categorization of raised issues infers an improper assignment of incident tickets, cause delays in the entire procedure of dispatch. The focus of this research is to automate the incident categorization (IC) and transfer to the appropriate support group forecasting the resolution for frequent issues based on the past
- item: Conference-Extended-AbstractDyeing of cotton fabric with a natural dye extracted from Areca Concinna Peel(2021) Ranthunga, RGSM; Wanigasekara, KV; Udayakumara, SVIn modern world, most of the countries tend to use the eco-friendly concept in many industries to minimize environmental pollution [1]. Synthetic dyes that are used in the textile industry offer more unfavourable and harmful effect to human beings such as carcinogenic, health-hazardous like skin allergies, toxic etc. And also, there is no systematic way to dispose of synthetic waste in the environment. So that it can be harmful to the ecosystem [2]. Therefore, the world tends to use natural dyes instead of synthetic dyes. Natural dyes have many advantages than synthetic dyes such as non-carcinogenic, eco-friendly, non-allergic, non-hazardous to human beings, etc. Natural dyes are mainly extracted from three different sources such as minerals, plants, and insects. Among these, plants are the most abundantly used natural dye source to extract dyes [3]. The main objective of this study was to extract natural dye from areca concinna peels and use extracted dye to dyeing the cotton fabrics.
- item: Conference-Extended-AbstractDecision tree application for model built-up land fragmentation in urban areas(2021) Ranaweera, N; Jayasinghe, A; Abenayake, CLand fragmentation can define as the “situation where one area/unit is composed of a large number of parcels that are too small for their rational utilization” [5]. Land fragmentation affects sustainable development through its multiple impacts on environmental, economic, and social costs [13]. Effective land use management and policy decisions are always based on understanding, modeling, and predicting land-use changes in cities [9]. Therefore, the land fragmentation process should systematically investigate to provide a wide-ranging set of land use indicators to support sustainable development [12]. Built-up land fragmentation is the fragmentation or division of the built-up plots or units within the built-up land-use area horizontally. The objective of this study is to frame a Decision Tree (DT) model to identify the non-linear relationships between the Level of Built-up Land Fragmentation (LBLF) and its influencing factors in urban areas. The sub-objective is to quantify the LBLF in the Western Province, Sri Lanka. The study scope limits to LBLF and Decision Tree (DT) non-linear classifier. The study further quantifies the LBLF from 2000 to 2010 in Western Province, Sri Lanka as an initiation to frame the DT model.