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Error Analysis in Two Nigerian Newspapers
Don’ Emenike,Success Asuzu 한국중원언어학회 2016 언어학연구 Vol.0 No.41
The purpose of this study was to explicate the nature of errors shown in two Nigerian newspapers, Punch and Vanguard. For the purpose, the authors of this study first identified errors shown in the newspapers, and then classified them into some categories. Finally, they made an attempt to explain the causes of the errors. In analyzing errors, this study employed theoretical frame works of Corder’s error analysis and Selinker’s interlanguage. Through a qualitative analysis, the authors identified and analyzed twenty-one errors in both newspapers. Some types of errors that were more frequently identified were prepositional errors, capitalization errors, malapropism, and others. It was found that error types in both newspapers were identical, probably because the writers/journalists would experience the same sociolinguistic background and educational system. The errors shown in the two newspapers could be instances of interlanguage transfer or poor knowledge of English grammar rules. The study made some implications for L2 language teaching as the analyzed errors could serve useful resources in terms of curriculum design for educating L2 learners in professional and other language learning situations.
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How does sovereign bond volatility interact between African countries?
( Kalu O. Emenike ) 한국파생상품학회 2022 선물연구 Vol.30 No.4
The importance of sovereign bond as a source of financing revenue deficit, benchmarking for corporate bonds and debt management in Africa, calls for continual monitoring of its volatility dynamics. This study evaluates the nature of sovereign bond volatility interaction between African countries using bivariate BEKK-GARCH (1, 1) model. Based on a sample of eight African countries, the results show evidence of unidirectional volatility spillover from Morocco sovereign bond to Egypt sovereign bond. Next, the results show absence of volatility interaction between Ghana and Nigeria sovereign bonds. The results further show the existence of bidirectional volatility transmission between Uganda and Kenya. Finally, the results indicate evidence of bidirectional volatility interaction between Botswana and South Africa. Overall, the results show existence of full interaction between Uganda-Kenya and Botswana-South Africa sovereign bond returns, partial interaction between Egypt and Morocco sovereign bond returns and no interaction between Ghana and Nigeria sovereign bonds markets. Thus, these results provide valuable implications for sovereign and corporate credit risk management, as well as strategy for monitoring and minimising negative effect of sovereign bond volatility spillover in Africa.
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Adaptive Distance Protection Scheme for Mutually Coupled Line
Uma Uzubi Uma,Arthur Ekwue,Emenike Ejiogu 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.1
The availability of zero-sequence current, under normal circumstances, determines the accuracy of the operation of a distance relay which is connected to a mutually coupled parallel line. When this is not available, the system adopts a diff erent compensation factor which if, not properly calculated introduces errors in the relay operation. The proposed adaptive protection scheme, described in this paper, consists of three modular artifi cial neural networks model (ANN). This is developed using the feed-forward nonlinear backpropagation Levenberg–Marquardt algorithm that determines the actual status of the mutually coupled lines. The remote terminal units connected to the current and voltage transformers are used to acquire the appropriate data. The proposed scheme also carefully determines the ground distance element reach settings by calculating the apparent impedance while considering mutual coupling for all practical system confi gurations from the ANN; this eliminates the need for a compensation factor. The results of the apparent impedance (R + jX) calculated by the proposed adaptive and the conventional schemes, showed an average percentage error of (0.06% and 0.02%) and (15% and 41.5%) respectively. Having obtained this result, the performance of the proposed adaptive scheme showed the exact fault location with a higher accuracy when compared with a compensated conventional scheme
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