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Issue Date	Title	Author(s)
2020-06	Split-plot Central Composite Experimental Design Method for Optimization of Cake Height to Achieve desired Texture	Yakubu, Y; Aliyu, Z, Q; Usman, A; Evans, P. O
2020	Split-plot Central Composite Experimental Design Method for Optimization of Cake Height to Achieve desired Texture	Yakubu, Yisa; Aliyu, ZQ; Usman, A; Evans, PO
2021-10-28	Trades in stock market anywhere in the world is faced with intense volatility due to stocks prices instability in real time that is mostly driven by information and other market dynamics. This research examines two volatility models with two different error distributions innovations in modelling and forecasting the continuous compounded return series (CCRS) of Nigeria All Share Index (NGX ASI) spot prices spanning the period of January 30, 2012 to June 30, 2021. The Generalized Autoregressive Conditional Heteroscedastic (GARCH) and Asymmetric Power Autoregressive Conditional Heteroscedastic ARCH (APARCH) volatility models under Student-t Distribution (StD) and Generalized Error Distribution (GED) error innovations are utilized. The best-fitted model is determined using Akaike’s Information Criterion (AIC) while Mean Square Error (MSE) is used to evaluate forecasts performance of the fitted volatility models. The results from the analysis showed that amongst competing models, APARCH (1,1)-GED was selected to be the best fitted volatility model with better forecasting power for the CCRS-NGX-ASI spot prices. This is because it produces the smallest AIC and MSE values	Gana, Y; Usman, A
2021-10-25	Multivariate Analysis of Dynamic Transmission of Coronavirus Disease with Control Measures in Nigeria.	Sheshi, M.M; Usman, A
2021-01-25	Multivariate Analysis of Dynamic Transmission of Coronavirus Disease with Control Measures in Nigeria.	Sheshi, M.M; Usman, A
2021-10-25	MODELLING AND FORECASTING VOLATILITY IN NIGERIA: EVIDENCE FROM THE STOCK MARKET	Zubairu, A. U; Usman, A
2022-08-08	Mathematical model of COVID-19 transmission dynamics incorporating booster vaccine program and environmental contamination	Usman, A; Akinwande, N.I.; Ashezua, T.T.; Gweryina, , R.I.; Somma, S.A.; Oguntolu, F.A.; Abdurrahman, O.N.; Kaduna, , F.S.; Adajime, T.P.; Kuta, F A; Abdulrahman, S.; Olayiwola, R O; Enagi, A I; Bolarin, G A; Shehu, MD
2021-09-21	Early detection of Pre-XDR TB with line probe assay in a high TB burden country	Usman, A; Laura, Madukaji; Isaac, Okohu; Saheed, Usman; Uche, Oyedum; Abdullahi, I.Enagi; AS, Adedeji; Femi, Owolagba; Eke, Ofuche; Jay, Osi Samuels; Toyin, Jolayemi; Prosper, Okonkwo
2022-11-04	Developments in computational optimization techniques of conjugate gradient coefficient, search direction, Broyden-Fletcher-Goldfarb-Shanno, symmetric-rank one and Davidon-Fletcher-Powell quasi-Newton methods.	Usman, A; U. Y, Abubakar; A., Adams; Y, Yakubu
2021-06	Prediction of Vehicular Accidents along Lokoja-Abuja-Kaduna Express Way, Nigeria Using Grey-System Model Gm(1,1)	Usman, A; Saeed, O. B; Abubakar, U. Y; Lawal, A