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Western Province, Sri Lanka

The University of Sri Jayewardenepura is a university in Sri Lanka. It is in Gangodawila, Nugegoda, near Sri Jayewardenepura Kotte, the capital city. It was formed in 1958 out of the Vidyodaya Pirivena, a Buddhist educational centre. Wikipedia.

Gunawardena U.A.D.P.,University of Sri Jayewardenepura
Energy Policy | Year: 2010

The objective of the paper is to estimate environmental externalities related to a run of river project in Sri Lanka and to investigate inequity in distribution of impacts among different social groups. Diversion of the river resulted in loss of water sports (for high-income groups both local and remote), loss of historical monuments (for remote high-income groups) and recreation losses (for local poor). Removal of forest cover leads to loss of non-timber products (for local poor) and carbon storage (for remote high- and low-income groups). Loss of home garden productivity was borne by local poor groups. Benefit of the project, generation of 145 GWh annually, was a gain for the grid connected groups. The impacts were valued using various valuation methods. The base case of the cost benefit analysis resulted in NPV of US$ 11,335,730. When distributional weights are applied for different income groups, both the sign and magnitude of net benefits change. In order to be viable, the project needs diversion of at least 9% of generated electricity to the poorest households in the country. Implications for energy policy towards reducing externality and inequality impacts are also discussed. © 2009 Elsevier Ltd. All rights reserved. Source

Senaratne B.C.,University of Sri Jayewardenepura
The Ceylon medical journal | Year: 2011

Many married Sri Lankan women annually migrate for employment overseas. Despite widely speculated psychological consequences in these children, their mental health status has not been systematically studied using validated instruments. To describe mental health status of children of women overseas workers and compare that with children of locally employed women, and to describe socio-demographic factors and risk factors associated with abnormal mental health in these children. A cross sectional comparative survey was conducted among 253 children (aged 5-10 years) of women migrant workers in the Colombo District and age and sex matched controls from same neighbourhood. Tools used were the validated Sinhala translation of Child Behaviour Check List (CBCL-S) and questionnaires on socio-demographic/risk factors and school functioning. Mean CBCL-S scores and proportion of children with mental health problems were significantly higher in the study group. Not having an elder sibling, father not living with child, mother educated up to grade 5 or less, change of principal carer (PC) twice or more, living with a relative (or not living in own home), child not communicating freely with PC, and not being permitted to engage in recreational activities at school were significantly associated with abnormal mental health of children of migrant women. A high awareness is required among health and social care authorities regarding mental health problems in these children and relevant risk factors in order to take preventive measures. Source

Talagala T.,University of Sri Jayewardenepura
Epidemiology Biostatistics and Public Health | Year: 2015

Dengue fever and its deadly complication dengue hemorrhagic fever is an infectious mosquito borne disease. The rise in dengue fever has made a heavy economic burden to the country. Climate variability is considered as the major determinant of dengue transmission. Sri Lanka has a favorable climatic condition for development and transmission of dengue. Hence the aim of this study is to estimate the effect of diverse climatic variables on the transmission of dengue while taking the lag effect and nonlinear effect into account. Weekly data on dengue cases were obtained from January, 2009 to September, 2014. Temperature, precipitation, visibility, humidity, and wind speed were also recorded as weekly averages. Quasi Poisson regression combined with distributed lag nonlinear model was used to identify the association between dengue incidence and climate variables. Results of DLNM revealed; mean Temperature 25°C – 27°C at lag 1 – 8 weeks, precipitation higher than 70mm at lag 1- 5 weeks and 20- 50mm at lag 10 – 20 weeks, humidity ranged from 65% to 80% at lag 10 – 18 weeks, visibility greater than 14 km have a positive impact on the occurrence of dengue incidence while, mean temperature higher than 28°C at lag 6 – 25 weeks, maximum temperature at lag 4 – 6 weeks, precipitation higher than 65mm at lag 15 – 20 weeks, humidity less than 70% at lag 4 – 9 weeks, visibility less than 14km, high wind speed have a negative impact on the occurrence of dengue incidence. These findings help to strengthen dengue prevention and control campaigns. © 2015, Prex S.p.A. All rights Reserved. Source

Ariyasingha I.D.I.D.,Open University of Sri Lanka | Fernando T.G.I.,University of Sri Jayewardenepura
Swarm and Evolutionary Computation | Year: 2015

Most real world combinatorial optimization problems are difficult to solve with multiple objectives which have to be optimized simultaneously. Over the last few years, researches have been proposed several ant colony optimization algorithms to solve multiple objectives. The aim of this paper is to review the recently proposed multi-objective ant colony optimization (MOACO) algorithms and compare their performances on two, three and four objectives with different numbers of ants and numbers of iterations. Moreover, a detailed analysis is performed for these MOACO algorithms by applying them on several multi-objective benchmark instances of the traveling salesman problem. The results of the analysis have shown that most of the considered MOACO algorithms obtained better performances for more than two objectives and their performance depends slightly on the number of objectives, number of iterations and number of ants used. © 2015 Elsevier B.V. Source

Wanigasuriya K.,University of Sri Jayewardenepura
MEDICC Review | Year: 2014

INTRODUCTION: This manuscript updates a review previously published in a local journal in 2012, about a new form of chronic kidney disease that has emerged over the past two decades in the northcentral dry zone of Sri Lanka, where the underlying causes remain undetermined. Disease burden is higher in this area, particularly North Central Province, and affects a rural and disadvantaged population involved in rice-paddy farming. Over the last decade several studies have been carried out to estimate prevalence and identify determinants of this chronic kidney disease of uncertain etiology. OBJECTIVE: Summarize the available evidence on prevalence, clinical profile and risk factors of chronic kidney disease of uncertain etiology in the north-central region of Sri Lanka. METHODS: PubMed search located 16 manuscripts published in peer-reviewed journals. Three peer-reviewed abstracts of presentations at national scientific conferences were also included in the review. RESULTS: Disease prevalence was 5.1%-16.9% with more severe disease seen in men than in women. Patients with mild to moderate stages of disease were asymptomatic or had nonspecific symptoms; urinary sediments were bland; 24-hour urine protein excretion was <1 g; and ultrasound demonstrated bilateral small kidneys. Interstitial fibrosis was the main pathological feature on renal biopsy. The possibility of environmental toxins affecting vulnerable population groups in a specific geographic area was considered in evaluating etiological factors. Pesticide residues were detected in affected patients' urine, and mycotoxins detected in foods were below maximum statutory limits. Calcium-bicarbonate-type water with high levels of fluoride was predominant in endemic regions. Significantly high levels of cadmium in urine of cases compared to controls, as well as the disease's dose-related response to these levels, has drawn attention to this element as a possible contributing factor. Familial clustering of patients is suggestive of a polygenic inheritance pattern comparable to that associated with diseases of multifactorial etiology. CONCLUSIONS: Available data suggest that chronic kidney disease of uncertain etiology is an environmentally acquired disease, but to date no definitive causal factor has been identified. Geographic distribution and research findings suggest a multifactorial etiology. KEYWORDS Chronic kidney disease, uncertain etiology, prevalence, clinical profile, risk factors, rural communities, paddy farming, environmentally acquired disease, Sri Lanka. Source

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