Access Statistics for Olaoluwa Simon Yaya

Author contact details at EconPapers.

Working Paper File Downloads Abstract Views
Last month 3 months 12 months Total Last month 3 months 12 months Total
A new unit root analysis for testing hysteresis in unemployment 1 1 4 85 4 7 15 144
An Information-Based Index of Uncertainty and the predictability of Energy Prices 0 0 0 11 3 7 7 30
Another Look at the Stationarity of Inflation rates in OECD countries: Application of Structural break-GARCH-based unit root tests 1 1 1 13 4 7 10 50
Are inflation rates in OECD countries actually stationary during 2011-2018? Evidence based on Fourier Nonlinear Unit root tests with Break 0 0 1 29 6 8 10 106
Can Western African countries catch up with Nigeria? Evidence from Smooth Nonlinearity method in Fractional Unit root framework 0 0 0 11 5 7 10 81
Comparative Analysis of Market Efficiency and Volatility of Energy Prices Before and During COVID-19 Pandemic Periods 0 0 1 6 6 9 12 28
Convergence among themselves and Middle-income trap of South-East Asian Nations: Findings from a New approach 0 0 0 11 3 8 13 37
Convergence of gender unemployment gaps in Africa: New evidence from Fourier ADF and KPSS unit root tests with break 0 1 4 5 1 7 12 15
Determinants of Desired and Actual Number of Children and the Risk of having more than Two Children in Ghana and Nigeria 0 0 1 14 5 7 12 93
Do we Experience Day-of-the-week Effects in Returns and Volatility of Cryptocurrency? 0 0 0 9 5 9 19 73
Does Sunspot Numbers Cause Global Temperatures? Evidence from a Frequency Domain Causality Test 0 0 0 0 2 3 3 91
Energy Pricing during the COVID-19 Pandemic: Predictive Information-Based Uncertainty Indexes with Machine Learning Algorithm 0 0 0 11 5 5 10 29
Forecasting Nigerian Inflation using Model Averaging methods: Modelling Frameworks to Central Banks 0 0 0 24 2 4 9 63
Fractional integration and asymmetric volatility in european, asian and american bull and bear markets. Applications to high frequency stock data 0 0 0 31 5 7 8 71
GDP Per Capita in Africa before the Global Financial Crisis: Persistence, Mean Reversion and Long Memory Features 0 0 0 5 1 5 7 39
Gold and Silver prices, their stocks and market fear gauges: Testing fractional cointegration using a robust approach 0 0 0 12 4 5 7 17
Growth Slowdowns and Middle-Income Trap: Evidence from New Unit Root Framework 0 0 1 19 2 8 12 44
High and Low Intraday Commodity Prices: A Fractional Integration and Cointegration Approach 0 0 2 41 4 10 21 101
Household Expenditure In Africa: Evidence Of Mean Reversion 0 1 1 17 2 5 6 29
How Persistent and Dependent are Pricing of Bitcoin to other Cryptocurrencies Before and After 2017/18 Crash? 0 0 0 16 3 3 3 69
How do Stocks in BRICS co-move with REITs? 0 1 1 19 3 8 11 91
How fearful are Commodities and US stocks in response to Global fear? Persistence and Cointegration analyses 0 0 0 7 4 6 8 24
Hysteresis of Unemployment Rates in Africa: New Findings from Fourier ADF test 0 0 0 33 10 14 19 112
Influence of US Presidential Terms on S&P500 Index Using a Time Series Analysis Approach 0 0 0 19 1 2 7 76
Investigating Predictors of Inflation in Nigeria: BMA and WALS Techniques 0 0 0 17 6 6 8 36
Investigating Structural break-GARCH-based Unit root test in US exchange rates 0 0 1 18 4 10 12 46
Is there Convergence between the Brics and International Securitized Property Markets? 0 0 0 11 4 6 6 30
Is there convergence between the BRICS and International REIT Markets? 0 0 1 21 3 9 14 77
Life Expectancy in West African Countries: Evidence of Convergence and Catching Up with the North 0 1 1 9 5 9 10 53
Long memory, strcutural breaks and mean shifts in the inflation rates in Nigeria 0 0 0 3 2 9 13 31
Long-range dependence and Trends in Nigerian Popular Music Artists’ Famosity-“Davido”, “Burna Boy”, “Tiwa Savage” and “Wizkid”: Evidence from Google Trends 1 1 1 3 3 5 5 65
Market Efficiency and Volatility Persistence of Cryptocurrency during Pre- and Post-Crash Periods of Bitcoin: Evidence based on Fractional Integration 0 0 1 46 6 13 20 141
Market Efficiency of Asian Stocks: Evidence based on Narayan-Liu-Westerlund GARCH-based Unit root test 0 0 0 21 5 8 12 45
Market Efficiency of Baltic Stock Markets: A Fractional Integration Approach 0 0 0 20 12 27 27 164
Market efficiency and Volatility persistence of green investments before and during COVID-19 pandemic 0 0 0 9 4 8 13 22
Model-free and Model-based connectedness in highly, medium and lowly correlated financial returns: analyses of OECD inflations 0 0 0 1 6 10 13 13
Modelling Cryptocurrency High-Low Prices using Fractional Cointegrating VAR 0 0 0 28 2 3 7 65
Modelling Long Range Dependence and Non-linearity in the Infant Mortality Rates of Africa Countries 0 0 0 12 4 4 5 49
Modelling Persistence and Non-Linearities in the US Treasury 10-Year Bond Yields 0 1 1 14 2 8 9 28
Modelling crude oil-petroleum products’ price nexus using dynamic conditional correlation GARCH models 0 0 1 5 2 6 8 52
Oil shocks and volatility of green investments: GARCH-MIDAS analyses 0 0 0 12 5 6 6 24
On the Impact of Inflation and Exchange Rate on Conditional Stock Market Volatility: A Re-Assessment 0 0 0 9 3 7 13 53
On the persistence and volatility in European, American and Asian stocks bull and bear markets 0 0 0 1 2 5 9 45
Persistence and Volatility Spillovers of Bitcoin price to Gold and Silver prices 0 0 1 40 2 5 13 20
Rural and Urban price inflation components in Nigeria: Persistence, Connectedness and Spillovers 0 0 1 4 4 7 13 17
Social Structure and Variation in the Family Formation Process: The Case of Age at First Marriage and Duration between First Marriage and First Birth in selected sub-Saharan African Countries 0 0 0 1 1 4 8 39
Stock Market Responses to COVID-19: Mean Reversion, Dependence and Persistence Behaviours 0 0 0 22 6 7 9 53
Stock Market Responses to COVID-19: The Behaviors of Mean Reversion, Dependence and Persistence 0 0 0 14 3 3 5 23
Testing Fractional Persistence and Nonlinearity in Infant Mortality Rates of Asia Countries 0 0 0 16 2 2 5 19
Testing Fractional Persistence and Nonlinearity in Infant Mortality Rates of Asia Countries 0 0 0 3 7 7 8 15
Testing Fractional Unit Roots with Non-linear Smooth Break Approximations using Fourier functions 0 0 0 36 5 5 7 72
Testing day-of-the-week persistence and seasonality in Spanish Electricity Energy prices 0 0 0 4 3 4 4 10
Testing for Persistence in German Green and Brown Stock Market Indices 0 0 0 5 1 3 5 9
The Persistence of Stock Market Returns during the Presidential elections in Nigeria 0 0 0 17 2 5 6 44
The Relationship Between Oil Prices and the Nigerian Stock Market, an Analysis Based on Fractional Integration and Cointegration 0 0 0 29 3 5 7 79
Time Series Analysis of Persistence in Crude Oil Price Volatility across Bull and Bear Regimes 0 0 0 21 6 8 10 115
Time-variation between metal commodities and oil, and the impact of oil shocks: GARCH-MIDAS and DCC-MIDAS analyses 0 0 0 63 2 5 12 32
Transmission of risks between energy and agricultural commodities: Frequency time-varying VAR, asymmetry and portfolio management 0 0 0 22 6 6 10 26
Unemployment Hysteresis in Middle East and North Africa Countries: Panel SUR-based Unit root test with a Fourier function 0 0 1 18 3 8 15 47
Total Working Papers 3 8 27 1,023 226 404 598 3,172


Journal Article File Downloads Abstract Views
Last month 3 months 12 months Total Last month 3 months 12 months Total
A New Unit Root Test for Unemployment Hysteresis Based on the Autoregressive Neural Network* 1 1 1 8 5 8 10 41
A new fractional integration approach based on neural network nonlinearity with an application to testing unemployment hysteresis 0 0 1 1 9 12 15 17
ANOTHER LOOK AT THE STATIONARITY OF INFLATION RATES IN OECD COUNTRIES: APPLICATION OF STRUCTURAL BREAK-GARCH-BASED UNIT ROOT TESTS 0 0 1 1 6 7 8 9
ANOTHER LOOK AT THE STATIONARITY OF INFLATION RATES IN OECD COUNTRIES: APPLICATION OF STRUCTURAL BREAK-GARCH-BASED UNIT ROOT TESTS 0 0 0 2 2 2 2 27
African stock markets’ connectedness: Quantile VAR approach 0 0 1 5 4 9 18 30
Assessing Market Efficiency And Volatility Of Exchange Rates in South Africa and United Kingdom: Analysis Using Hurst Exponent 0 0 1 14 3 3 6 58
CPI INFLATION IN AFRICA: FRACTIONAL PERSISTENCE, MEAN REVERSION AND NONLINEARITY 0 0 0 0 0 3 5 6
CPI INFLATION IN AFRICA: FRACTIONAL PERSISTENCE, MEAN REVERSION AND NONLINEARITY 0 0 0 1 1 1 1 16
Can West African countries catch up with Nigeria? Evidence from smooth nonlinearity method in fractional unit root framework 0 0 0 1 3 5 7 39
Can West African countries catch up with Nigeria? Evidence from smooth nonlinearity method in fractional unit root framework 0 0 0 5 1 3 4 40
Do sunspot numbers cause global temperatures? Evidence from a frequency domain causality test 0 0 0 1 0 2 4 47
Does oil connect differently with prominent assets during war? Analysis of intra-day data during the Russia-Ukraine saga 0 0 7 58 1 7 28 158
Dynamic connectedness of economic policy uncertainty in G7 countries and the influence of the USA and UK on non-G7 countries 0 0 1 2 2 5 15 21
Economic policy uncertainty in G7 countries: evidence of long-range dependence and cointegration 0 0 3 16 7 9 13 61
Fractional Integration and Asymmetric Volatility in European, American and Asian Bull and Bear Markets: Application to High‐frequency Stock Data 0 0 0 2 3 4 7 23
GROWTH SLOWDOWNS AND MIDDLE-INCOME TRAP: EVIDENCE FROM NEW UNIT ROOT FRAMEWORK 2 2 3 4 10 13 20 25
Global temperatures and sunspot numbers. Are they related? 0 0 0 9 2 3 4 68
Gold and silver prices, their stocks and market fear gauges: Testing fractional cointegration using a robust approach 2 2 3 5 8 12 13 27
Growth and growth disparities in Africa: Are differences in renewable energy use, technological advancement, and institutional reforms responsible? 0 0 0 3 3 6 14 25
How do stocks in BRICS co-move with real estate stocks? 0 0 0 4 5 9 11 34
How fearful are commodities and US stocks in response to global fear? Persistence and cointegration analyses 0 0 1 4 1 1 4 10
How persistent and dynamic inter-dependent are pricing of Bitcoin to other cryptocurrencies before and after 2017/18 crash? 0 0 0 9 3 7 12 47
Hysteresis of unemployment rates in Africa: new findings from Fourier ADF test 0 0 0 7 2 5 8 80
Investigating Asian regional income convergence using Fourier Unit Root test with Break 0 0 0 0 2 5 8 10
Investigating Asian regional income convergence using Fourier Unit Root test with Break 0 0 2 12 3 5 11 55
Is There Convergence Between BRICS Listed Property Stocks and International REITs? 0 0 1 1 2 5 8 9
Life expectancy in West African countries: Evidence of convergence and catching up with the north 0 0 0 2 3 5 7 13
Life expectancy in West African countries: Evidence of convergence and catching up with the north 0 0 0 1 0 0 2 10
Mapping US presidential terms with S&P500 index: Time series analysis approach 0 0 0 1 4 6 11 25
Market Efficiency and Volatility Persistence of Green Investments Before and During the COVID-19 Pandemic 0 1 2 5 6 9 12 29
Market efficiency and volatility persistence of cryptocurrency during pre‐ and post‐crash periods of Bitcoin: Evidence based on fractional integration 0 0 0 8 6 12 16 57
Market efficiency of Baltic stock markets: A fractional integration approach 0 0 0 16 1 6 9 78
Model-free and model-based connectedness in highly, medium and lowly correlated financial returns: analyses of OECD inflations 0 0 0 0 4 11 13 13
Modeling persistence and non-linearities in the US treasury 10-year bond yields 0 0 1 5 4 8 16 24
Modelling Long-Range Dependence and Non-linearity in the Infant Mortality Rates of African Countries 0 0 0 3 3 5 5 22
Modelling cryptocurrency high–low prices using fractional cointegrating VAR 0 0 0 4 5 7 10 22
Oil shocks and volatility of green investments: GARCH-MIDAS analyses 1 1 4 4 3 8 17 21
On the persistence and volatility in European, American and Asian stocks bull and bear markets 0 0 0 29 2 3 5 134
Persistence and volatility spillovers of bitcoin price to gold and silver prices 0 0 1 3 4 10 17 26
Quantile time-frequency connectedness and spillovers among financial stress, cryptocurrencies and commodities 0 0 1 1 5 7 17 17
Re-validating the Phillips Curve hypothesis in Africa and the role of oil prices: A mixed-frequency approach 0 0 0 0 6 12 19 24
Stock Market Efficiency in Asia: Evidence from the Narayan–Liu–Westerlund's GARCH‐based unit root test 0 0 2 6 5 12 21 34
Stock market prices and Dividends in the US: Bubbles or Long-run equilibria relationships? 0 0 0 3 6 9 9 17
Tail risk dependence, co-movement and predictability between green bond and green stocks 0 0 1 13 3 4 6 34
Testing Day-Of-The-Week Persistence and Seasonality in Spanish Electricity Energy Prices 0 0 0 2 3 6 7 13
Testing fractional persistence and non-linearities in the natural gas market: An application of non-linear deterministic terms based on Chebyshev polynomials in time 0 0 0 15 2 2 2 69
Testing fractional unit roots with non-linear smooth break approximations using Fourier functions 0 0 0 1 3 15 17 32
Testing unit roots, structural breaks and linearity in the inflation rates of the G7 countries with fractional dependence techniques 1 1 1 1 3 4 6 16
The global financial crisis: Testing For Fractional Cointegration Between The Us And Nigerian Stock Markets 0 0 0 12 4 5 6 43
The persistence and asymmetric volatility in the Nigerian stock bull and bear markets 0 0 0 15 2 6 11 92
The relationship between oil prices and the Nigerian stock market. An analysis based on fractional integration and cointegration 0 0 1 27 1 5 11 142
Time Series Analysis of the Behaviour of Import and Export of Agricultural and Non-Agricultural Goods in West Africa: A Case Study of Nigeria 0 0 1 11 1 6 11 109
Time series analysis of co-movements in the prices of gold and oil: Fractional cointegration approach 0 0 0 21 2 4 6 113
Time series analysis of persistence in crude oil price volatility across bull and bear regimes 0 0 0 10 4 4 6 62
Time series analysis of volatility in the petroleum pricing markets: the persistence, asymmetry and jumps in the returns series 0 0 0 12 2 2 5 58
Time-variation between metal commodities and oil, and the impact of oil shocks: GARCH-MIDAS and DCC-MIDAS analyses 0 0 0 1 1 5 7 16
Transmission of risks between energy and agricultural commodities: Frequency time-varying VAR, asymmetry and portfolio management 0 0 2 4 3 7 17 28
Under-5 Mortality Rates in G7 Countries: Analysis of Fractional Persistence, Structural Breaks and Nonlinear Time Trends 0 1 2 6 5 13 16 39
Unemployment hysteresis in Middle East and North Africa countries: panel SUR-based unit root test with a Fourier function 0 0 0 1 4 6 9 21
Volatility interdependencies of cryptocurrencies, gold, oil, and US stocks: quantile connectedness analysis with intraday data 0 1 3 5 4 13 17 22
Volatility persistence and returns spillovers between oil and gold prices: Analysis before and after the global financial crisis 0 0 0 12 2 4 8 83
Total Journal Articles 7 10 48 435 204 392 630 2,541


Statistics updated 2026-02-12