- Digital Platforms and Economics
- International Development and Aid
- International Business and FDI
- COVID-19 Pandemic Impacts
- Global Financial Crisis and Policies
- Global trade and economics
- Monetary Policy and Economic Impact
- Digital Marketing and Social Media
- State Capitalism and Financial Governance
- Corporate Finance and Governance
- Indian Economic and Social Development
- Migration and Labor Dynamics
- Global Health Care Issues
- Innovation Diffusion and Forecasting
- Corporate Taxation and Avoidance
- ICT Impact and Policies
- Sharing Economy and Platforms
- Fiscal Policy and Economic Growth
- Blockchain Technology Applications and Security
- Economic Theory and Policy
- COVID-19 epidemiological studies
- Image and Video Quality Assessment
- Consumer Market Behavior and Pricing
- Agricultural risk and resilience
- Working Capital and Financial Performance
University College London
2021-2024
University of Johannesburg
2021
University of the Witwatersrand
2013
Abstract We outline a theory of algorithmic attention rents in digital aggregator platforms. explore the way that as platforms grow, they become increasingly capable extracting from variety actors their ecosystems—users, suppliers, and advertisers—through control over user attention. focus our analysis on advertising business models, which harvested users is monetized by reselling to suppliers or other advertisers, though we believe has relevance online models well. argue regulations should...
Abstract Attempts by governments to curb the market power of ‘Big Tech’ (Alphabet, Amazon, Apple, Meta Platforms, and Microsoft) are impeded limited public information on their diversified digital platform ecosystems. Big Tech’s annual 10-K financial reports disclose little about globally dominant ‘free’ services, user numbers, monetization practices, suites products. To support antitrust regulatory oversight, we propose mandatory type disclosures covering Tech’s: (i) internally used...
This article highlights the prominence of net investment income payments made to foreign direct investors in South Africa’s current account deficit. After a brief history balance payments, we describe several factors driving growth assets and liabilities, including roles China Africa as destinations relisting major African companies abroad. The slow accumulation by firms before 2006, coupled with higher returns on has contributed an imbalance country’s FDI income, while compositional shift...
Abstract This paper offers ten guidelines for researchers to improve their analysis of regional integration and approach integration. By way analysis, statistics are often misunderstood or poorly constructed. In one another this leads an oversimplification meaning. With respect the taken by policymakers integration, goals Africa's have not been seriously interrogated; nor necessary national preconditions achieving even a minimal form that is sustainable.
Using a simple Bayesian 'mixed effects' hierarchical model we provide econometric estimates of annual 2020 employment losses in the context COVID-19 pandemic for 15 SADC member states on basis historical GDP data between 2000 and 2019 forecasts. Our mixed effects consists country-varying coefficients, as well 'fixed' (pooled) coefficients. This allows us to fully explore variation countries. The provides total women's employment, from which infer income losses. We find that roughly half...
We assess the impact of coronavirus disease 2019 (COVID-19) pandemic on labour markets and economies 16 SADC member states using a
We investigate Amazon’s power to extract economic rents through the algorithmic arrangement of search results. analyze 2023 Amazon Marketplace result data, focusing on product features and top-3 most clicked products, estimate what drives user clicks. Our econometric results show that increased visual prominence positioning (``attention share'') correlates strongly with more clicks, even when products have a higher price or worse ratings. Among top five results, where typically four are...
Click to increase image sizeClick decrease size Notes 1. See UNIDO (2011, 112) for details on which product lines fall under this classification. 2. Using 2006 Quantec data. The NDP, however, misquotes the paper’s findings. 3. In comparison, Egypt’s was 48% and Nigeria’s 21% (UNIDO 2011). 4. When Figure 1 is shown South Korea, we can see how undiversified Africa’s industrial structure is. Memedovic Lapadre (2009). 5. role of mining industry in supporting manufacturing one way or another also...
Using a Bayesian mixed effects model on large firm-level panel we show that the investment slowdown is long-standing feature across 21 advanced economies since 1999. We find flattening in investment-q relationship over time, as firms become less responsive to opportunities. Weaker responsiveness opportunities closely linked with more market power. At macroeconomic level, shortage of – per original secular stagnation thesis predicts 40% variation firms’ estimated baseline rates.
Using a Bayesian multilevel (‘mixed effects’) model on large firm-level panel we are able to isolate the secular decline in investment demand and test for causes of it. Our regression shows that slowdown is long-standing feature across most firms 21 advanced economies since 1999 continuing until present (2020). group-level (‘macro’) regression, try explain firms’ estimated slowdown. We find shortage relative opportunities – as per original stagnation thesis explains 40% variation this