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    Does geopolitics trigger energy inflation in the European economic area? Evidence from a panel time-varying regression
    (Emerald Group Publishing Ltd, 2024) Olasehinde-Williams, Godwin; Olanipekun, Ifedolapo; Usman, Ojonugwa
    PurposeThis paper aims to examine the reaction of energy inflation to geopolitical risks in the European Economic Area between 1990 and 2015. Design/methodology/approachThis study applies the nonparametric time-varying coefficient panel data model with fixed effects. In addition, to further reveal potential tail effects that may not have been captured by conditional mean-based regressions, the method of moments quantile regression was also used. FindingsThe findings of this study are as follows: first, as European countries get exposed to geopolitical tensions, it is expected that energy prices will surge. Second, the ability of geopolitical risk to trigger energy inflation in recent times is not as powerful as it used to be. Third, countries with a lower inflation rate, when exposed to geopolitical risks, experience smaller increases in energy inflation compared to countries with a higher inflation rate. Research limitations/implicationsThe findings of this study lead us to the conclusion that transitioning from nonrenewable to renewable energy use is one channel through which the sampled countries can battle the energy inflation, which geopolitical risks trigger. A sound macroeconomic policy for inflation control is a complementary channel through which the same goal can be achieved. Originality/valueGiven the increasing level of energy inflation and geopolitical risks in the world today, this study is an attempt to reveal the time-varying characteristics of the relationship between these variables in European countries using a nonparametric time-varying coefficient panel data model and method of moments quantile regression with fixed effects.
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    Impact analysis of COVID-19 on Nigerian workers' productivity using multiple correspondence analysis
    (Elsevier, 2023) Sakpere, Wilson; Sakpere, Aderonke Busayo; Olanipekun, Ifedolapo; Yaya, OlaOluwa Simon
    As the COVID-19 pandemic became a global health concern, many business activities have had to adjust to the protocols required to keep people safe, thereby altering the work structures of many professionals. With data gathered from 466 respondents in Nigeria, of which approximately 70% are from the South-West, this study shows how the factors associated with the health crisis have affected work productivity during this period. The snowball survey research design techniques with the two-way interaction model were em-ployed. Multiple Correspondence Analysis was used to analyse and understand multiple and pairwise qualitative factors that influence productivity. The first part of the analysis identified boredom, remuneration, internet availability, fear of COVID-19 and depressing news of COVID-19 as the factors that had significant impacts on workers' productivity. The second part of the analysis shows how the categories of the five significant factors were either associated or not with productivity. An analysis of each of these factors showed that fear of the disease was associated with slight productivity but access to internet facilities and remuneration were strongly associated with improved work productivity, while bore -dom and depressing news about COVID-19 were associated with non-productivity during this period. Further evidence also showed that training and new skills acquisition might improve workers' productivity much more. We, therefore, recommend dynamic skills ac-quisition, training, and investment in tools and services that will enhance flexibility with the changing work structure that comes because of global crises. & COPY; 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ )