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 0 0 2 83 1 2 7 134
An Information-Based Index of Uncertainty and the predictability of Energy Prices 0 0 0 11 0 0 1 23
Another Look at the Stationarity of Inflation rates in OECD countries: Application of Structural break-GARCH-based unit root tests 0 0 0 12 0 1 3 42
Are inflation rates in OECD countries actually stationary during 2011-2018? Evidence based on Fourier Nonlinear Unit root tests with Break 0 0 0 28 0 0 1 96
Can Western African countries catch up with Nigeria? Evidence from Smooth Nonlinearity method in Fractional Unit root framework 0 0 0 11 1 1 3 73
Comparative Analysis of Market Efficiency and Volatility of Energy Prices Before and During COVID-19 Pandemic Periods 1 1 1 6 1 1 3 18
Convergence among themselves and Middle-income trap of South-East Asian Nations: Findings from a New approach 0 0 0 11 1 2 3 27
Convergence of gender unemployment gaps in Africa: New evidence from Fourier ADF and KPSS unit root tests with break 0 0 1 1 0 0 5 5
Determinants of Desired and Actual Number of Children and the Risk of having more than Two Children in Ghana and Nigeria 0 0 1 13 1 1 7 84
Do we Experience Day-of-the-week Effects in Returns and Volatility of Cryptocurrency? 0 0 0 9 0 0 2 55
Does Sunspot Numbers Cause Global Temperatures? Evidence from a Frequency Domain Causality Test 0 0 0 0 0 0 0 88
Energy Pricing during the COVID-19 Pandemic: Predictive Information-Based Uncertainty Indexes with Machine Learning Algorithm 0 0 0 11 1 1 3 21
Forecasting Nigerian Inflation using Model Averaging methods: Modelling Frameworks to Central Banks 0 0 0 24 1 1 2 56
Fractional integration and asymmetric volatility in european, asian and american bull and bear markets. Applications to high frequency stock data 0 0 0 31 0 0 0 63
GDP Per Capita in Africa before the Global Financial Crisis: Persistence, Mean Reversion and Long Memory Features 0 0 0 5 0 0 1 33
Gold and Silver prices, their stocks and market fear gauges: Testing fractional cointegration using a robust approach 0 0 0 12 0 0 1 11
Growth Slowdowns and Middle-Income Trap: Evidence from New Unit Root Framework 0 0 0 18 0 1 5 33
High and Low Intraday Commodity Prices: A Fractional Integration and Cointegration Approach 0 1 2 40 1 3 12 86
Household Expenditure In Africa: Evidence Of Mean Reversion 0 0 0 16 0 0 1 24
How Persistent and Dependent are Pricing of Bitcoin to other Cryptocurrencies Before and After 2017/18 Crash? 0 0 0 16 0 0 0 66
How do Stocks in BRICS co-move with REITs? 0 0 1 18 0 1 4 82
How fearful are Commodities and US stocks in response to Global fear? Persistence and Cointegration analyses 0 0 0 7 0 1 1 17
Hysteresis of Unemployment Rates in Africa: New Findings from Fourier ADF test 0 0 1 33 0 2 11 96
Influence of US Presidential Terms on S&P500 Index Using a Time Series Analysis Approach 0 0 0 19 1 1 3 71
Investigating Predictors of Inflation in Nigeria: BMA and WALS Techniques 0 0 0 17 0 0 1 28
Investigating Structural break-GARCH-based Unit root test in US exchange rates 0 0 0 17 0 0 1 34
Is there Convergence between the Brics and International Securitized Property Markets? 0 0 0 11 0 0 0 24
Is there convergence between the BRICS and International REIT Markets? 0 0 0 20 0 0 1 64
Life Expectancy in West African Countries: Evidence of Convergence and Catching Up with the North 0 0 0 8 0 0 3 43
Long memory, strcutural breaks and mean shifts in the inflation rates in Nigeria 0 0 0 3 0 1 3 21
Long-range dependence and Trends in Nigerian Popular Music Artists’ Famosity-“Davido”, “Burna Boy”, “Tiwa Savage” and “Wizkid”: Evidence from Google Trends 0 0 0 2 0 0 4 60
Market Efficiency and Volatility Persistence of Cryptocurrency during Pre- and Post-Crash Periods of Bitcoin: Evidence based on Fractional Integration 0 0 0 45 1 1 3 124
Market Efficiency of Asian Stocks: Evidence based on Narayan-Liu-Westerlund GARCH-based Unit root test 0 0 1 21 0 1 4 34
Market Efficiency of Baltic Stock Markets: A Fractional Integration Approach 0 0 0 20 0 0 0 137
Market efficiency and Volatility persistence of green investments before and during COVID-19 pandemic 0 0 0 9 2 2 4 13
Model-free and Model-based connectedness in highly, medium and lowly correlated financial returns: analyses of OECD inflations 0 0 1 1 0 0 1 1
Modelling Cryptocurrency High-Low Prices using Fractional Cointegrating VAR 0 0 0 28 1 2 5 62
Modelling Long Range Dependence and Non-linearity in the Infant Mortality Rates of Africa Countries 0 0 0 12 0 0 1 45
Modelling Persistence and Non-Linearities in the US Treasury 10-Year Bond Yields 0 0 0 13 0 0 1 20
Modelling crude oil-petroleum products’ price nexus using dynamic conditional correlation GARCH models 0 1 1 5 0 1 2 46
Oil shocks and volatility of green investments: GARCH-MIDAS analyses 0 0 0 12 0 0 0 18
On the Impact of Inflation and Exchange Rate on Conditional Stock Market Volatility: A Re-Assessment 0 0 0 9 1 1 5 44
On the persistence and volatility in European, American and Asian stocks bull and bear markets 0 0 0 1 0 0 2 38
Persistence and Volatility Spillovers of Bitcoin price to Gold and Silver prices 0 0 0 39 1 4 8 13
Rural and Urban price inflation components in Nigeria: Persistence, Connectedness and Spillovers 0 0 3 3 3 3 8 8
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 0 0 4 32
Stock Market Responses to COVID-19: Mean Reversion, Dependence and Persistence Behaviours 0 0 0 22 0 0 3 46
Stock Market Responses to COVID-19: The Behaviors of Mean Reversion, Dependence and Persistence 0 0 2 14 0 0 3 19
Testing Fractional Persistence and Nonlinearity in Infant Mortality Rates of Asia Countries 0 0 0 3 0 0 0 7
Testing Fractional Persistence and Nonlinearity in Infant Mortality Rates of Asia Countries 0 0 2 16 0 0 4 16
Testing Fractional Unit Roots with Non-linear Smooth Break Approximations using Fourier functions 0 0 0 36 0 0 4 66
Testing day-of-the-week persistence and seasonality in Spanish Electricity Energy prices 0 0 0 4 0 0 1 6
Testing for Persistence in German Green and Brown Stock Market Indices 0 0 5 5 1 1 5 6
The Persistence of Stock Market Returns during the Presidential elections in Nigeria 0 0 1 17 0 0 3 38
The Relationship Between Oil Prices and the Nigerian Stock Market, an Analysis Based on Fractional Integration and Cointegration 0 0 0 29 0 0 1 72
Time Series Analysis of Persistence in Crude Oil Price Volatility across Bull and Bear Regimes 0 0 0 21 0 0 1 106
Time-variation between metal commodities and oil, and the impact of oil shocks: GARCH-MIDAS and DCC-MIDAS analyses 0 0 1 63 0 0 3 21
Transmission of risks between energy and agricultural commodities: Frequency time-varying VAR, asymmetry and portfolio management 0 0 0 22 1 2 4 19
Unemployment Hysteresis in Middle East and North Africa Countries: Panel SUR-based Unit root test with a Fourier function 0 0 2 17 0 3 13 38
Total Working Papers 1 3 28 1,001 20 41 185 2,673


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* 0 0 1 7 0 1 5 32
A new fractional integration approach based on neural network nonlinearity with an application to testing unemployment hysteresis 0 0 1 1 0 1 4 4
ANOTHER LOOK AT THE STATIONARITY OF INFLATION RATES IN OECD COUNTRIES: APPLICATION OF STRUCTURAL BREAK-GARCH-BASED UNIT ROOT TESTS 0 0 0 0 0 0 1 1
ANOTHER LOOK AT THE STATIONARITY OF INFLATION RATES IN OECD COUNTRIES: APPLICATION OF STRUCTURAL BREAK-GARCH-BASED UNIT ROOT TESTS 0 0 0 2 0 0 0 25
African stock markets’ connectedness: Quantile VAR approach 0 0 1 4 0 1 8 15
Assessing Market Efficiency And Volatility Of Exchange Rates in South Africa and United Kingdom: Analysis Using Hurst Exponent 0 0 1 13 0 0 2 53
CPI INFLATION IN AFRICA: FRACTIONAL PERSISTENCE, MEAN REVERSION AND NONLINEARITY 0 0 0 0 0 0 0 1
CPI INFLATION IN AFRICA: FRACTIONAL PERSISTENCE, MEAN REVERSION AND NONLINEARITY 0 0 0 1 0 0 0 15
Can West African countries catch up with Nigeria? Evidence from smooth nonlinearity method in fractional unit root framework 0 0 0 5 1 1 2 37
Can West African countries catch up with Nigeria? Evidence from smooth nonlinearity method in fractional unit root framework 0 0 0 1 1 1 2 33
Do sunspot numbers cause global temperatures? Evidence from a frequency domain causality test 0 0 0 1 0 0 3 45
Does oil connect differently with prominent assets during war? Analysis of intra-day data during the Russia-Ukraine saga 0 0 8 55 0 5 25 143
Dynamic connectedness of economic policy uncertainty in G7 countries and the influence of the USA and UK on non-G7 countries 0 0 2 2 0 3 11 13
Economic policy uncertainty in G7 countries: evidence of long-range dependence and cointegration 0 0 3 15 0 0 6 51
Fractional Integration and Asymmetric Volatility in European, American and Asian Bull and Bear Markets: Application to High‐frequency Stock Data 0 0 0 2 1 2 3 19
GROWTH SLOWDOWNS AND MIDDLE-INCOME TRAP: EVIDENCE FROM NEW UNIT ROOT FRAMEWORK 0 1 2 2 0 2 5 8
Global temperatures and sunspot numbers. Are they related? 0 0 0 9 0 0 1 64
Gold and silver prices, their stocks and market fear gauges: Testing fractional cointegration using a robust approach 1 1 1 3 1 1 1 15
Growth and growth disparities in Africa: Are differences in renewable energy use, technological advancement, and institutional reforms responsible? 0 0 1 3 1 4 9 16
How do stocks in BRICS co-move with real estate stocks? 0 0 0 4 0 1 2 24
How fearful are commodities and US stocks in response to global fear? Persistence and cointegration analyses 0 0 0 3 0 0 1 6
How persistent and dynamic inter-dependent are pricing of Bitcoin to other cryptocurrencies before and after 2017/18 crash? 0 0 1 9 1 1 3 36
Hysteresis of unemployment rates in Africa: new findings from Fourier ADF test 0 0 0 7 0 1 3 73
Investigating Asian regional income convergence using Fourier Unit Root test with Break 0 0 2 12 1 1 6 47
Investigating Asian regional income convergence using Fourier Unit Root test with Break 0 0 0 0 0 0 1 2
Is There Convergence Between BRICS Listed Property Stocks and International REITs? 0 1 1 1 0 1 2 2
Life expectancy in West African countries: Evidence of convergence and catching up with the north 0 0 1 1 0 2 3 10
Life expectancy in West African countries: Evidence of convergence and catching up with the north 0 0 2 2 0 0 6 7
Mapping US presidential terms with S&P500 index: Time series analysis approach 0 0 0 1 1 1 4 17
Market Efficiency and Volatility Persistence of Green Investments Before and During the COVID-19 Pandemic 0 0 0 3 0 0 5 17
Market efficiency and volatility persistence of cryptocurrency during pre‐ and post‐crash periods of Bitcoin: Evidence based on fractional integration 0 0 1 8 1 1 9 44
Market efficiency of Baltic stock markets: A fractional integration approach 0 0 0 16 0 1 2 70
Model-free and model-based connectedness in highly, medium and lowly correlated financial returns: analyses of OECD inflations 0 0 0 0 0 1 1 1
Modeling persistence and non-linearities in the US treasury 10-year bond yields 0 1 2 5 0 3 8 11
Modelling Long-Range Dependence and Non-linearity in the Infant Mortality Rates of African Countries 0 0 0 3 0 0 1 17
Modelling cryptocurrency high–low prices using fractional cointegrating VAR 0 0 0 4 0 0 4 14
Oil shocks and volatility of green investments: GARCH-MIDAS analyses 0 1 2 2 0 2 7 10
On the persistence and volatility in European, American and Asian stocks bull and bear markets 0 0 0 29 0 1 3 131
Persistence and volatility spillovers of bitcoin price to gold and silver prices 0 0 2 3 1 2 9 14
Quantile time-frequency connectedness and spillovers among financial stress, cryptocurrencies and commodities 0 0 0 0 2 5 5 5
Re-validating the Phillips Curve hypothesis in Africa and the role of oil prices: A mixed-frequency approach 0 0 0 0 0 6 8 11
Stock Market Efficiency in Asia: Evidence from the Narayan–Liu–Westerlund's GARCH‐based unit root test 0 1 4 6 1 2 8 16
Stock market prices and Dividends in the US: Bubbles or Long-run equilibria relationships? 0 0 2 3 0 0 5 8
Tail risk dependence, co-movement and predictability between green bond and green stocks 0 0 3 13 0 0 4 29
Testing Day-Of-The-Week Persistence and Seasonality in Spanish Electricity Energy Prices 0 0 2 2 0 1 7 7
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 0 0 1 67
Testing fractional unit roots with non-linear smooth break approximations using Fourier functions 0 0 0 1 0 0 6 16
Testing unit roots, structural breaks and linearity in the inflation rates of the G7 countries with fractional dependence techniques 0 0 0 0 0 0 1 11
The global financial crisis: Testing For Fractional Cointegration Between The Us And Nigerian Stock Markets 0 0 0 12 0 0 1 38
The persistence and asymmetric volatility in the Nigerian stock bull and bear markets 0 0 0 15 1 1 4 84
The relationship between oil prices and the Nigerian stock market. An analysis based on fractional integration and cointegration 0 0 0 26 0 2 5 133
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 0 0 3 101
Time series analysis of co-movements in the prices of gold and oil: Fractional cointegration approach 0 0 0 21 0 0 5 108
Time series analysis of persistence in crude oil price volatility across bull and bear regimes 0 0 1 10 0 0 3 58
Time series analysis of volatility in the petroleum pricing markets: the persistence, asymmetry and jumps in the returns series 0 0 0 12 0 0 5 55
Time-variation between metal commodities and oil, and the impact of oil shocks: GARCH-MIDAS and DCC-MIDAS analyses 0 0 0 1 0 0 3 10
Transmission of risks between energy and agricultural commodities: Frequency time-varying VAR, asymmetry and portfolio management 0 0 2 4 1 2 7 16
Under-5 Mortality Rates in G7 Countries: Analysis of Fractional Persistence, Structural Breaks and Nonlinear Time Trends 0 1 1 5 0 2 4 26
Unemployment hysteresis in Middle East and North Africa countries: panel SUR-based unit root test with a Fourier function 0 0 0 1 0 0 5 12
Volatility interdependencies of cryptocurrencies, gold, oil, and US stocks: quantile connectedness analysis with intraday data 0 0 3 3 0 1 7 7
Volatility persistence and returns spillovers between oil and gold prices: Analysis before and after the global financial crisis 0 0 0 12 0 1 5 79
Total Journal Articles 1 7 54 412 15 64 270 2,040


Statistics updated 2025-08-05