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Welcome to the Institutional Repository of SriLanka Technology Campus (SLTC). The repository is a digital service that collects, preserves, and distributes the institution's scholarly output. It provides open access to research publications by the institution's academic staff and students.

The repository includes journal articles, conference papers, books, book chapters, theses and dissertations, undergraduate research, conference proceedings, Webinars, and other scholarly materials.

This repository aims to increase the visibility, accessibility, and impact of the institution’s research and preserve its intellectual output for future generations.

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Recent Submissions

A Short Survey on Ultraviolet Communication Systems
(Sri Lanka Technology Campus, 2022) Sooriarachchi, Vishalya P.; Kumar, Ambrish; Jayakody, Dushantha. Nalin K.
The improvements made in the area of Optical Wireless Communication (OWC) has presented the new era of Ultra Violet Communication (UVC) which is used in both land and underwater arrangements. UVC has attracted extreme attention in providing more secure and reliable communication opportunities in the terrestrial environment and the same is been adapted in the underwater environment in order to increase the bit rate and efficiency of the present available systems. This short survey studies the specific uses of UVC in the terrestrial and underwater applications and identifies the future applications of UVC.
Detecting Trends from Accumulated Changes in the Prices of a Stock
(Sri Lanka Technology Campus, 2022) Korale, Asoka
The paper presents a method to segment a time series by using trends estimated on it, trends that are formed by peaks and troughs produced by runs of increments and decrements. Each run measures the relative change produced by accumulating the increments or decrements from the previous run. A time series of daily stock prices is used to demonstrate the method. A series of consecutive price changes in the increasing or decreasing direction constitutes a run in the prices. In this view a run is broken when prices are repeated. Runs of price increases or decreases is used to estimate an increasing or decreasing trend in the prices. The trend is estimated between two points in the time series and relates the amount of accumulated change between the points to the number of data points between them. The main contributions of the paper include a method to estimate the amount of linear change between the two points by using this accumulated change between two points in time. The linear change between the two points corresponds to an estimate of the average change in prices at each price change. A trend estimated over such runs in the prices also provides an estimate for the rate of return. It also provides an estimate for the average rate over time at which the prices rise or fall. The method also detects the size of a relative change in direction in the time series. This model of the trend is used to segment a time series of stock prices by detecting changes in the trend. It serves as visual means to trade in the stock by providing information about the persistence of a series of price rises or falls, the relative size of each rise, fall or trend, the time interval of the trend and the rate at which trends change.
The Awareness of Traffic Light Labeling System and Nutrition Information on Packed Food Labels Among Young Generation in Sri Lanka.
(Sri Lanka Technology Campus, 2022) Fernando, Kushan; Walpita, Kaumadi; Igalagama, Dineshi; Pathiranage, Hirusha; Jayarathne, Jeewaka
A Traffic-light labeling system is a labeling system that uses a color code in front-of-package to immediately express the nutritional quality of the food to the consumer. Nutrient levels and the proportion of products are classified in main three colors “Red” (High), “Amber” (Medium), and “Green” (Low) to indicate sugar, salt, and fat content in food. In Sri Lanka, this labeling system was initiated on the 1st of June 2019. This survey-based study was focused on the consumer knowledge of nutritional food label information among the young generation (Age in between 15 – 29 years) in Sri Lanka. A questionnaire with 12 questions was used to collect information (including Kano model questions) from 230 consumers. The obtained data were computed and statistically analyzed using STATA 14.2 software to determine relationships and associations between various factors and the effectiveness of the Traffic-light labeling system. Findings showed that amongst 230 respondents 74.8% are aware of the color light labeling system and 25.2% are not aware. Awareness and use of pre-packaged food labeling information were significantly associated with the age and education level of the respondents and there is good knowledge about the labeling system among the young generation and can conclude that this has been successfully communicating the information to the young generation.
5G Key Technologies Adopted in South Asian Countries
(Sri Lanka Technology Campus, 2022) Leelarathna, T. W. W.; Morapitiya, Sumali S.; Gunawardana, Nadun; Jayakody, Dushantha Nalin K.
Due to rapid changes in the wireless communication world, we discussed the adaptation of 5th Generation (5G) key technologies in South Asian countries. There are eight South Asian countries and only four countries have taken the steps to deploy 5G technology while only two countries could be deployed commercially at present. These four countries deployed Non-Standalone (NSA) 5G network while Sri Lanka deployed a Standalone (SA) 5G network as a pilot project. This work is extended to describe the challenges faced in south Asian countries when deploying the 5G network and finally discussed future trends.
Potential Reuse of Greywater using constructed wetland:Design and Implementation of Vertical Constructed wetland System: A Case Study
(Sri Lanka Technology Campus, 2022) Siriwardhana, K. D.; Miguntanna, N. P.
In this study, greywater characteristics and treatment possibilities were reviewed using vertical constructed wetlands (VCW) to come up with a schematic of a greywater recycling system designed specifically for non-potable uses. Vertical flow constructed wetland units were designed according to the calculation of Kicked equation, which has been widely used in the research literature. Three types of plants, Canna (Canna indica), Ferns (Matteuccia struthiopteris) and Cattail (Typha latifolia) were used. Retention tank constructed for retaining solid particles in greywater as primary treatment. The experiment was conducted in a Completely Randomized Design (CRD) with three replicates conducted during two months period by using a hydraulic retention time of the system of 24 hours. The quality of the influent and effluent was monitored in two weeks intervals by analyzing water quality parameters namely PO4-3, NO3-, and SO4 3. It can be concluded that the pilot scale VCW’s are feasible for greywater treatment at the domestic level with Cattail as the wetland plant since Cattail dense fibrous root system cause to remove more pollutants from the influent compared to that with this other two types of plants.