Browsing by Author "Liyanage, S"

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    item: Conference-Abstract
    Crime analytics : analysis of crimes through newspaper articles
    Jayaweera, I; Sajeewa, C; Liyanage, S; Wijewardane, T; Perera, GIUS; Wijayasiri, A
    Crime analysis is one of the most important activities of the majority of the intelligent and law enforcement organizations all over the world. Generally they collect domestic and foreign crime related data (intelligence) to prevent future attacks and utilize a limited number of law enforcement resources in an optimum manner. A major challenge faced by most of the law enforcement and intelligence organizations is efficiently and accurately analyzing the growing volumes of crime related data. The vast geographical diversity and the complexity of crime patterns have made the analyzing and recording of crime data more difficult. Data mining is a powerful tool that can be used effectively for analyzing large databases and deriving important analytical results. This paper presents an intelligent crime analysis system which is designed to overcome the above mentioned problems. The proposed system is a web-based system which comprises of crime analysis techniques such as hotspot detection, crime comparison and crime pattern visualization. The proposed system consists of a rich and simplified environment that can be used effectively for processes of crime analysis.
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    item: Conference-Full-text
    Crime Analytics: Analysis of Crimes Through Newspaper Articles
    (2015-08-03) Jayaweera, I; Sajeewa, C; Liyanage, S; Wijewardane, T; Perera, I; Wijayasiri, A
    Crime analysis is one of the most important activities of the majority of the intelligent and law enforcement organizations all over the world. Generally they collect domestic and foreign crime related data (intelligence) to prevent future attacks and utilize a limited number of law enforcement resources in an optimum manner. A major challenge faced by most of the law enforcement and intelligence organizations is efficiently and accurately analyzing the growing volumes of crime related data. The vast geographical diversity and the complexity of crime patterns have made the analyzing and recording of crime data more difficult. Data mining is a powerful tool that can be used effectively for analyzing large databases and deriving important analytical results. This paper presents an intelligent crime analysis system which is designed to overcome the above mentioned problems. The proposed system is a web-based system which comprises of crime analysis techniques such as hotspot detection, crime comparison and crime pattern visualization. The proposed system consists of a rich and simplified environment that can be used effectively for processes of crime analysis.
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    item: Conference-Full-text
    Easybin: metagenomics binning services for non-specialists
    (IEEE, 2021-07) Piumini, M; Liyanage, S; Bogahawaththa, T; Perera, I; Mallawaarachchi, V; Adhikariwatte, W; Rathnayake, M; Hemachandra, K
    Metagenomics is considered as one of the emerging areas in the field of bioinformatics. Binning is a key step carried out to characterise the composition of metagenomics samples. Even though there are many automated metagenomics binning tools, it is challenging to execute tools individually because a significant amount of time should be spent on installing, configuring and maintaining individual tools. Hence, unified web platforms that consist of multiple binning tools along with other complementary tools have been developed that are straightforward to use. However, none of these existing platforms provide a customisable and transparent workflow management system. Hence, we introduce EasyBin, a workflow management system for non-specialists which can model, execute, and monitor a metagenomics binning process with parallel process execution. Evaluation results show that EasyBin reports a mean SUS Score of 77.9 and gains a speedup ofx1.46 in workflow execution with parallel processing. EasyBin is open-source software available at https://bitbucket.org/easybin/easybin.
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    item: Article-Full-text
    Effects of high performance work practices on job performance in project-based organizations
    (SAGE Publications Inc, 2013) Wickramasinghe, V; Liyanage, S
    This article investigates high performance work practices used in project-based globally distributed software development firms in Sri Lanka and their effects on job performance. A random sample of 220 employees engaged full-time in globally distributed software development firms in Sri Lanka responded. For the data analysis, descriptive statistics, factor analysis, correlation analysis, and multiple regression analysis were used. Three main high performance work practices were identified by the analysis, namely, performance evaluation, learning and development, and involvement in decision making. These three practices significantly and positively predict job performance of employees attached to project-based globally distributed software development firms.
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    item: Thesis-Abstract
    Feasibility of using presently used pre-cast sections for M-beam type bridges
    Liyanage, S; Jayasinghe, MTR
    For the rapid economic development of Sri Lanka, the upgrading of transportation facilities is one of the main criteria to be fulfilled. In this context, there may be an increase in the construction of bridges which will need more money. This can not be afforded by a developing country like Sri Lanka, which can not allocate too much money in construction work. So it is advantageous to carryout research, aimed at reducing the cost of them. Most commonly used deck type for the bridges constructed in Sri Lanka is pseudo slab type bridge decks. For this type of decks, inverted T-beams are used with in-filled decks. So the cost of these types of bridge decks can be considerable. This can be reduced to some extent by adopting the M-beam type of construction with in-situ top slab. For this type of construction, it was decided to check with inverted T-beam sections, since they are readily available in Sri Lanka. Feasible spans of the standard sections of inverted T-beams for top slab constructions were found by trial and error. Magnel diagrams were drawn to get the feasible regions of cables positions. To facilitate the checking of these sections a spreadsheet was prepared to do the design calculations. A cost comparison was done to find the most economical deck type out of two types of bridge decks. From the results got by the case study, it can be seen that the available T-beam sections can be used for the shorter spans with the top slab construction than when they are used in the in-filled construction. Even though the reduction of span is about 2.0 m to 2.5 m, the reduction of dead weight of the super structure is considerable which may cause the reduction of foundation sizes, especially in the case of shallow foundations. As per -the results got from the cost study, it was found that the reduction of cost of construction of the superstructure is also reduced to some extent due to the adoption of the top slab construction.
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    item: Conference-Abstract
    Inter act: a framework for generating user interfaces for web services
    (2011) Nawarathna, H; De Alwis, P; Dilhara, S; Liyanage, S; Weerawarana, S
    Inter Act is a form based User Interfaces (UI) designing framework for non-technical users. It can be used to design UIs for multiple device platforms. The framework mainly consists of two parts, an Integrated Development Environment (IDE) and a 1 conversion library. The designed UIs are saved in an XML format, IXML. These user sketches are then converted into HTML pages which can be displayed in various devices using the conversion library. Data is bound to the UI elements at runtime. Usability is the major concern of the Inter Act Framework. This aspect is addressed by applying the best practices of Human Computer Interaction (HCI) in order to provide the user a better experience.
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    item: Conference-Full-text
    Interact: a framework to generate device specific smart user interfaces
    (Computer Science & Engineering Society c/o Department of Computer Science and Engineering, University of Moratuwa., 2011-11) Nawarathna, H; De Alwis, P; Liyanage, S; Weerawarana, S; Weerawardhana, S; Madusanka, A; Dilrukshi, T; Aravinda, H
    InterAct is a form based User Interfaces (UI) designing framework for non-technical users. It can be used to design UIs for multiple device platforms. The framework consists of two parts, an Integrated Development Environment (IDE) and a conversion library. The designed UIs are saved in an XML format type, called IXML. These user sketches are then converted into HTML pages, which can be displayed in various devices using the conversion library. Data is bound to the UI elements at runtime. Usability is the major concern of the InterAct Framework. This aspect is addressed by applying the best practices of Human Computer Interaction (HCI) in order to provide the user a better experience.