Review of Information Engineering and Applications

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Online ISSN: 2409-6539
Print ISSN: 2412-3676
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No. 2

On Homogeneous Cubic Equation with Fourunknowns x3+y3= 2lzw2

Pages: 93-101
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On Homogeneous Cubic Equation with Fourunknowns x3+y3= 2lzw2

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DOI: 10.18488/journal.79/2014.1.2/79.2.93.101

M.A. Gopalan , S. Vidhyalakshmi , N. Thiruniraiselvi

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M.A. Gopalan , S. Vidhyalakshmi , N. Thiruniraiselvi (2014). On Homogeneous Cubic Equation with Fourunknowns x3+y3= 2lzw2. Review of Information Engineering and Applications, 1(2): 93-101. DOI: 10.18488/journal.79/2014.1.2/79.2.93.101
The homogeneous cubic equation with four unknowns represented by the Diophantine    equation  x3+y3= 2lzw2   is analyzed for its patterns of non – zero distinct integer solutions. A few interesting properties between the solutions and special numbers, namely, Polygonal number, Pyramidal number, Centered polygonal number, Stella octangular number and Octahedral number    are presented. 
Contribution/ Originality
This study contributes in the existing literature different approaches of determining non-zero distinct integer solutions to the homogeneous equation of degree three with 4 unknowns given by x3+y3= 2lzw2

Information and Communication Technology in Classroom Situations in Rural and Urban Areas in Zimbabwe: A Comparative Study on the Use of Digital and Projected Media in Teaching and Learning at Six Secondary Schools in Masvingo

Pages: 77-92
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Information and Communication Technology in Classroom Situations in Rural and Urban Areas in Zimbabwe: A Comparative Study on the Use of Digital and Projected Media in Teaching and Learning at Six Secondary Schools in Masvingo

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DOI: 10.18488/journal.79/2014.1.2/79.2.77.92

Citation: 1

Maxwell Constantine Chando Musingafi , Christopher Chadenanga

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Maxwell Constantine Chando Musingafi , Christopher Chadenanga (2014). Information and Communication Technology in Classroom Situations in Rural and Urban Areas in Zimbabwe: A Comparative Study on the Use of Digital and Projected Media in Teaching and Learning at Six Secondary Schools in Masvingo. Review of Information Engineering and Applications, 1(2): 77-92. DOI: 10.18488/journal.79/2014.1.2/79.2.77.92
Information and communication technology have taken centre stage of almost every interaction, communication and learning processes among people of this world. This study is a comparative analysis of the usefulness of modern information and communication technology (ICT) in the transmission and movement of information in the teaching and learning processes at high schools in Zimbabwe. In the contemporary times most projected media are computerized and, thus, may require advanced expertise in operating them. It has been also argued that projected media makes learning real, practical, interactive, and above all, more permanent than other teaching and learning aids. The objectives of this study were to establish forms of projected media in use in urban and rural schools in Zimbabwe; to investigate the extent to which these projected media are really of use in these schools; and to establish challenges faced by these schools in their endeavours in the use of projected media. The central argument in the study is that proper use of projected media leads to efficiency and effectiveness in the teaching and learning processes. Research methods involved both a theoretical review and an empirical study based on case studies, making use of comparative and exploratory approaches. The study established that while urban secondary schools have some forms of contemporary projected media, rural secondary schools do not have most of these projected media; the expertise and zeal to use the projected media is very low in both urban and rural schools; and proper use of projected media leads to efficiency and effectiveness in the teaching and learning processes. Among other recommendations, the study recommends continuous professional development of teachers in the use of projected media; and partnerships with stakeholders so that the school has a wider base for resource mobilisation.
Contribution/ Originality
The overall aim of this study is to contribute a theoretical framework that will help towards the generation, development and use of ICTs and projected media in both urban and rural secondary schools in Zimbabwe and the world. Our aim is to widen the knowledge base and understanding of the generation, development and utilisation of ICTs and projected media in Zimbabwe and the global community.

Analytical Review of SQL Server Optimization

Pages: 66-76
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Analytical Review of SQL Server Optimization

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DOI: 10.18488/journal.79/2014.1.2/79.2.66.76

Gaurav Kumar , Arun Sangwan

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Gaurav Kumar , Arun Sangwan (2014). Analytical Review of SQL Server Optimization. Review of Information Engineering and Applications, 1(2): 66-76. DOI: 10.18488/journal.79/2014.1.2/79.2.66.76
It is a complex task to optimize query as well as to validate the correctness and effectiveness of query optimizer. A query optimizer should estimate and compare the costs of executing a query using different execution strategies and should choose the strategy with the lower cost estimate. To fairly and realistically compare different strategies accurate cost estimation is required. This is a challenging task to measure quality of query optimization as modern query optimizers provide more advanced optimization strategies and adaptive techniques. This paper describes different ways to improve the performance of SQL Server queries, index optimization with occasional references to particular SQL code and how to achieve the best performance for the given tables and queries by giving some tips for query optimization in Microsoft SQL Server. The paper provides a detailed overview of query optimization, Optimization techniques, testing of optimization techniques that are used to validate the query optimizer of Microsoft’s SQL Server and issues in query optimization testing.
Contribution/ Originality

A Study on Commensal Mortality Rate of a Typical Three Species Syn-Eco-System with Unlimited Resources for Commensal

Pages: 55-65
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A Study on Commensal Mortality Rate of a Typical Three Species Syn-Eco-System with Unlimited Resources for Commensal

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DOI: 10.18488/journal.79/2014.1.2/79.2.55.65

B. Hari Prasad

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B. Hari Prasad (2014). A Study on Commensal Mortality Rate of a Typical Three Species Syn-Eco-System with Unlimited Resources for Commensal. Review of Information Engineering and Applications, 1(2): 55-65. DOI: 10.18488/journal.79/2014.1.2/79.2.55.65
The present investigation is on an analytical and numerical study of a typical three species syn-eco system with mortality rate for commensal. The system comprises of a commensal (S1), two hosts S2 and S3 where S2 and S3 both benefit S1, without getting themselves affected either positively or adversely. Further the first species has unlimited resources. The model equations constitute a set of three first order non-linear coupled differential equations. Criteria for the asymptotic stability of all the four equilibrium states are established. Trajectories of the perturbations over the equilibrium states are illustrated. Further the global stability of the system is established with the aid of suitably constructed Liapunov’s function and the numerical solutions for the growth rate equations are computed using Runge-Kutta fourth order scheme.
Contribution/ Originality