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Perspectives of modeling COVID-19 transmission via integral equations

Meththananda, R. G. U. I.; Ganegoda, N. C.; Perera, S. S. N. (University of Colombo, 2021)

The ongoing COVID-19 pandemic has become a major threat to the entire globe. In order to support better understanding and controlling strategies, different modeling approaches can be utilized. Compartment models such as ...
A Generalized Reciprocal Service Cost Allocation Model – for Manufacturing Firms

Hameem, M. H. K. M. (University of Colombo, 2021)

This study details the development of two reciprocal service cost allocation models. The first model was developed using a system of linear difference equations and the other with a system of simple linear equations. ...
Automorphisms of Latin Squares

Mendis, M. J. L. (University of Colombo, 2021)

A Latin Square L of order n is an n×n array containing n symbols from [n] = {1, 2, . . . ,n} such that each element of [n] appears once in each row and each column of L. Rows and columns of L are indexed by elements of ...
Analyzing the Early Stage of COVID-19 Transmission in Sri Lanka via a Multi–patch Compartmental Model

Jayathunga, Y.; Erandi, K. K. W. H.; Ganegoda, N. C.; Perera, S. S. N. (University of Colombo, 2021)

The main focus of this work is modelling the spread of COVID-19 within a multi-patch environment. The proposed model incorporates the short-term mobility and a mobility matrix. A SQIHR model including close contact tracing ...
A simple reciprocal service cost allocation model and a generalization - for manufacturing firms

Hameem, M.H.K.M. (University of Colombo, 2020)

A simple reciprocal service cost allocation model is a prime requirement of all manufacturing firms as cost accountants find it difficult to understand most existing models. This research is aimed at addressing this ...

Perspectives of modeling COVID-19 transmission via integral equations

Meththananda, R. G. U. I.; Ganegoda, N. C.; Perera, S. S. N. (University of Colombo, 2021)

The ongoing COVID-19 pandemic has become a major threat to the entire globe. In order to support better understanding and controlling strategies, different modeling approaches can be utilized. Compartment models such as ...
A Generalized Reciprocal Service Cost Allocation Model – for Manufacturing Firms

Hameem, M. H. K. M. (University of Colombo, 2021)

This study details the development of two reciprocal service cost allocation models. The first model was developed using a system of linear difference equations and the other with a system of simple linear equations. ...
Automorphisms of Latin Squares

Mendis, M. J. L. (University of Colombo, 2021)

A Latin Square L of order n is an n×n array containing n symbols from [n] = {1, 2, . . . ,n} such that each element of [n] appears once in each row and each column of L. Rows and columns of L are indexed by elements of ...
Analyzing the Early Stage of COVID-19 Transmission in Sri Lanka via a Multi–patch Compartmental Model

Jayathunga, Y.; Erandi, K. K. W. H.; Ganegoda, N. C.; Perera, S. S. N. (University of Colombo, 2021)

The main focus of this work is modelling the spread of COVID-19 within a multi-patch environment. The proposed model incorporates the short-term mobility and a mobility matrix. A SQIHR model including close contact tracing ...
A simple reciprocal service cost allocation model and a generalization - for manufacturing firms

Hameem, M.H.K.M. (University of Colombo, 2020)

A simple reciprocal service cost allocation model is a prime requirement of all manufacturing firms as cost accountants find it difficult to understand most existing models. This research is aimed at addressing this ...
On the ABC and GA indices of the corona products of some graphs

Kumara, Dhananjaya; Mahasinghe, A. C.; Erandi, K.K.W.H. (2021)

In this research, we derived the formulae for the atom-bond connectivity (ABC) index and the geometric-arithmetic (GA) index of several corona products of graphs made by composing the path, the cycle and the complete graphs. ...
Analysis and forecast of dengue incidence in urban Colombo, Sri Lanka

Erandi, K.K.W.H.; Perera, S.S.N.; Mahasinghe, A. C. (2021)

Background: Understanding the dynamical behavior of dengue transmission is essential in designing control strategies. Mathematical models have become an important tool in describing the dynamics of a vector borne disease. ...
An Optimal Lockdown Relaxation Strategy for Minimizing the Economic Effects of COVID-19 Outbreak

Mahasinghe, A. C.; Erandi, K. K. W. H.; Perera, S.S.N. (2021)

In order to recover the damage to the economy by the ongoing COVID-19 pandemic, many countries consider the transition from strict lockdowns to partial lockdowns through relaxation of preventive measures. In this work, we ...
STAR-CRITICAL RAMSEY NUMBERS FOR CYCLES VERSUS K4

Jayawardene, Chula J.; Narvaez, David; Radziszowski, Stanis law P. (2021)

Given three graphs G, H and K we write K → (G, H), if in any red/blue coloring of the edges of K there exists a red copy of G or a blue copy of H. The Ramsey number r(G, H) is defined as the smallest natural number n ...
An SIER model to estimate optimal transmission rate and initial parameters of COVD-19 dynamic in Sri Lanka

Wickramaarachchi, W.P.T.M.; Perera, S.S.N. (2021)

COVID-19 global outbreak has been significantly damaging the human well-being, life style of people and the global economy. It is clear that the entire world is moving into a dangerous phase of this epidemic at the moment. ...

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