Articles authored by UoM staff: Recent submissions

  • Characterisation and description of surface water quality in the threatened urban wetlands around the city of Colombo 
    Hettiarchchi, M; Anurangi, J; De Alwis, AAP [Article-Abstract]
    Colombo is a city surrounded by a large and interconnected system of natural wetlands. These wetlands which have historically provided a range of water services to the city are now believed to be threatened by degradation ...
  • A Tool for sustainability : a case for biogas in Sri Lanka 
    De Alwis, AAP [Article-Abstract]
    Sri Lanka at present oscillates between an energy crisis and an economic crisis now entwined as a result of costly private power purchase agreements based on thermal power aggravated by rising fuel prices. The country ...
  • Nanotechnology in a world out of balance 
    Karunaratne, V; Kottegoda, N; De Alwis, AAP [Article-Abstract]
    As the world population marches towards the 9 billion mark by 2050, factors critical for the sustenance of the ecosystems will come under increasing stress. Having crossed the 7 billion figure in 2011, the 9 billion mark ...
  • The Nanotechnology and its contributions to economic development 
    Karunaratne, V; De Alwis, AAP [Article-Abstract]
    When you control atoms, you control just about everything," said Richard Smalley, the 1996 Nobel Laureate, who discovered buckyballs, referring to the possibilities of nanotechnology". The guiding vision of nanotechnology ...
  • Gas transport parameters for compacted reddish - brown soil in Sri Lankan landfill final cover 
    Wickramarachchi, P; Ranasinghe, K; Hamamoto, S; Kawamoto, K; Nawagamuwa, UP; Moldrup, P; Komatsu, T [Article-Abstract]
    Gas exchange through (he compacted final cover soil at landfill sites plays a vital role for emission, fate, and transport of toxic landfill f,ases. This study involved measuring the soil-gas diffusivity tDp/Du, the ratio ...
  • The Curious case of the Khettarama pitch 
    Nawagamuwa, UP; Senanayake, AIMJ; Silva, SA [Article-Abstract]
    During the Compaq Cup tournament in Sri Lanka in September 2009, the teams batting under lights at the R. Premadasa (Khettarama) Stadium pitch consistently found it very difficult to bat and thus lost matches. Many were ...
  • Gas exchangeable properties of "Maharagama" open dump cover soil 
    Ranasinghe, RHK; Nawagamuwa, UP; Wickramarachchi, PNK; Kawamoto, K [Article-Abstract]
    In Sri Lanka, normal practice is to dump waste in low lands and cover with a good compacted soil without providing gas venting facilities. This can be found at 'Mahargama' dumpsite too. Once municipal solid waste is placed ...
  • Matale ground subsidence and overlooked construction basics 
    Nawagamuwa, UP; Wijewickrama, MIDH; Sugathapala, K; Karunawardena, WA; Bandara, RMS [Article-Abstract]
    Since few years back, there has been several cases reported on construction failures and sink holes in Matale due to a possible ground subsidence affecting human settlements in the region. Villagers have been living with ...
  • Development of Standards for Sinhala Computing 
    Dias, G; Goonetilleke, A [Article-Abstract]
    Information technology has been used in Sri Lanka for about 20 years, but to a great extent, its use has been limited to those with a knowledge of English. And as these are a minority of the population, the larger proportion ...
  • CONSTRUCTION OF A MULTILINGUAL PLACE NAME DATABASE FOR SRI LANKA 
    Weerasinghe, A; Dias, G
    Although the national languages of Sri Lanka are Sinhala and Tamil, due to the fact that most of the computer systems operate in English, almost all the databases in Sri Lanka have been implemented in English. This paper ...
  • Comprehensive Part-Of-Speech Tag Set and SVM Based POS Tagger for Sinhala 
    Fernando, S; Ranathunga, S; Jayasena, S; Dias, G
    This paper presents a new comprehensive multi-level Part-Of-Speech tag set and a Support Vector Machine based Part-Of-Speech tagger for the Sinhala language. The currently available tag set for Sinhala has two limitations: ...
  • Comparison Between Performance of Various Database Systems for Implementing a Language Corpus 
    Upeksha, D; Wijayarathna, C; Siriwardena, M; Lasandun, L; Wimalasuriya, C; de Silva, NHND; Dias, G
    Data storage and information retrieval are some of the most important aspects when it comes to the development of a language corpus. Currently most corpora use either relational databases or indexed file systems. When ...
  • COMBINED SYMBOLIC AND NUMERICAL METHODS FOR SOLVING EQUATIONAL SYSTEMS 
    Dias, G; Nanayakkara, V [Article-Abstract]
    In this paper we discuss systems developed to assist scientists and engineers to solve their problems based on mathematical models using numerical and symbolic methods. Numerical library routines for numerical algorithms ...
  • Cloud To Cloud: Enabling Content Transfer among Personal Cloud Instances 
    Erabadda, B; Baddegama, V; Dias, G [Article-Abstract]
    With increasing globalization, it has become essential to share digital content with various parties. Meanwhile, it is important to preserve confidentiality and have control over how a particular party’s personal content ...
  • Challenges of enabling IT in the Sinhala Language 
    Dias, G [Article-Abstract]
    Although Sinhala is the national language of Sri Lanka, even in 2004 most computer operating systems, databases and applications were in English and only a handful of Sinhala websites existed. Many people thought that ...
  • Building a WordNet for Sinhala 
    Wijesiri, I; Gallage, M; Gunathilaka, B; Lakjeewa, M; Wimalasuriya, DC; Dias, G; Paranavithana, R; De Silva, N [Article-Abstract]
    Sinhala is one of the official languages of Sri Lanka and is used by over 19 million people. It belongs to the Indo-Aryan branch of the In-do-European languages and its origins date back to at least 2000 years. It has ...
  • Automatic Creation of a Sentence Aligned Sinhala-Tamil Parallel Corpus 
    Hameed, RA; Pathirennehelage, N; Ihalapathirana, A; Mohamed, MZ; Ranathunga, VSD; Jayasena, S; Dias, G; Fernando, S [Article-Abstract]
    A sentence aligned parallel corpus is an important prerequisite in statistical machine translation. However, manual creation of such a parallel corpus is time consuming, and requires experts fluent in both languages. ...
  • Automated Assessment of Multi-Step Answers for Mathematical Word Problems 
    Dias, G; Ranathunga, S; Kadupitiya, JCS [Article-Abstract]
    We present a system to automatically grade the mathematical word questions. The questions that we currently consider are at the level of GCE (General Certificate of Education) Ordinary Level (O/L) Mathematics paper standard ...
  • A Market-Based Approach to control Web Bandwidth Usage 
    Disanayake, C; Dias, G; de Silva, CR [Article-Abstract]
    We have designed and implemented a proxy-based system which allows each user to request, and obtain a desired amount of bandwidth for web access. Bandwidth is priced dynamically based on the demand at any given time. This ...
  • A New Prosodic Phrasing Method for Sinhala Language 
    Bandara, WMC; Lakmal, WMS; Liyanagama, TD; Dias, G; Jayasena, S; Bulathsinghala, SV [Article-Abstract]
    This paper describes a new method of predicting prosodic phrase breaks in Sinhala language in order to improve the quality of the existing TTS Sinhala voices. In a Text To Speech (TTS) system, quality of the synthetic ...