GN

G.O. Ndubuisi

Authored

18 records found

Learning-by-exporting in South Africa

The influence of global value chain (GVC) participation and technological capability*

Using the South African Revenue Service and National Treasury firm-level panel data for 2009–2017, this paper investigates how trade related to the global value chain (GVC) affects the performance of manufacturing firms in South Africa. The paper uses extant classifications of in ...

Too big to be ignored

How energy poverty undermines productive efficiency

Productive efficiency has far-reaching implications on the direction of economic growth and welfare. While this has led to an expansive literature on the drivers of productive efficiency, this literature has proceeded without considering the role of energy poverty. Yet, energy po ...

PGP for portfolio optimization

Application to ESG index family

The conventional portfolio design approach assumes Gaussian return distributions, but this is not accurate in practice. Asymmetric and heavy-tailed return distributions necessitate consideration of higher-order moments such as skewness and kurtosis, in addition to mean and varian ...
We examine the dependence between volume and returns for the NFT market and three sub-markets (Cryptokitties, Cryptopunks, and Decentraland) using both quantile cross-spectral coherency and quantile regression techniques. Results from both techniques show significant evidence of ...

Trade for catch-up

Examining how global value chains participation affects productive efficiency

A substantial part of production and trade now takes place through global value chains (GVC), making it an essential conduit of knowledge spillover and technology transfer. Yet, extant studies examining how countries become productively efficient and catch-up to the global effici ...
In 1987, Robert M. Solow hinted at the computer age and productivity statistics puzzle. While this puzzle persisted for many years, a growing literature has picked it up to examine the effect of ICTs on technical efficiency. However, this literature has focused mainly on quantity ...
In 1987, Robert M. Solow hinted at the computer age and productivity statistics puzzle. While this puzzle persisted for many years, a growing literature has picked it up to examine the effect of ICTs on technical efficiency. However, this literature has focused mainly on quantity ...
This paper examines the dependence between Artificial Intelligence (AI) and eight energy-focused sectors (including renewable energy and coal) across different market conditions and investment horizons. This paper adopts both linear and non-linear models such as quantile regressi ...
This paper uses the Quantile Vector-Autoregressive (Q-VAR) technique to examine the connectedness between three regional (North America, Europe and Asia-Pacific) sustainability indices and major natural resource commodities including energy commodities (crude oil and natural gas) ...
This paper examines the relationships among cryptocurrency environmental attention and clean cryptocurrencies prices using Time-Varying Parameter Vector Auto-Regression (TVP-VAR) and wavelets techniques. Results show strong connectedness among these variables, implying that the p ...
We explore the heterogeneous effect of migrant remittances on citizens' support for taxation using a sample comprising 45,000 individuals from the Afrobarometer survey round 7 [2016–2018] across 34 African countries. To correct for unobserved heterogeneity, we endogenously identi ...
This paper examines the connectedness among 12 African equity markets and the global commodity, developed equity markets, paying particular attention to their evolution during the COVID-19 pandemic's peak period. We find that whilst African equity markets connect weakly to these ...
The recent boom of the services sector, especially in developing countries, coincides with the rise of digital technologies. While the former might be attributed to the latter, empirical analysis of this relationship is still limited. This paper fills this gap by examining the ef ...
Exporting higher quality and complex products is deemed pathway to economic growth and development. However, producing such products is knowledge-intensive and requires quality intermediate inputs and advanced technologies. Integration into global trade networks is increasingly a ...
Exporting higher quality and complex products is deemed pathway to economic growth and development. However, producing such products is knowledge-intensive and requires quality intermediate inputs and advanced technologies. Integration into global trade networks is increasingly a ...
This paper examines the dynamic short- and long-run asymmetric interactions and causality between real economic activity and stock and gold markets volatility shocks using both the cointegration Nonlinear Autoregressive Distributed Lag and Granger causality tests. In a further an ...
This paper examines the dynamic short- and long-run asymmetric interactions and causality between real economic activity and stock and gold markets volatility shocks using both the cointegration Nonlinear Autoregressive Distributed Lag and Granger causality tests. In a further an ...
This paper examines the dynamic short- and long-run asymmetric interactions and causality between real economic activity and stock and gold markets volatility shocks using both the cointegration Nonlinear Autoregressive Distributed Lag and Granger causality tests. In a further an ...

Contributed

2 records found

Analysing the North Sea Offshore Energy System in Light of the Energy Transition:

A Case Study Application of the Extended Multi-Level Perspective Framework

The urgent need to address global warming and achieve the 1.5°C target set by the Paris Agreement necessitates an energy transition in Europe, with offshore wind energy in the North Sea playing a vital role. Despite the complexity of the North Sea's offshore energy system, the ex ...

Green Transition Efficiency in African Countries

The role of climate aid and climate readiness

This research is designed to provide a structured and comprehensive examination of the complex relationship between climate readiness, climate aid, and carbon efficiency in African countries. At its heart, the primary goal is to construct a climate readiness framework initially d ...