Land‐use change trajectories up to 2050: insights from a global agro‐economic model comparison

Changes in agricultural land use have important implications for environmental services. Previous studies of agricultural land‐use futures have been published indicating large uncertainty due to different model assumptions and methodologies. In this article we present a first comprehensive comparison of global agro‐economic models that have harmonized drivers of population, GDP, and biophysical yields. The comparison allows us to ask two research questions: (1) How much cropland will be used under different socioeconomic and climate change scenarios? (2) How can differences in model results be explained? The comparison includes four partial and six general equilibrium models that differ in how they model land supply and amount of potentially available land. We analyze results of two different socioeconomic scenarios and three climate scenarios (one with constant climate). Most models (7 out of 10) project an increase of cropland of 10–25% by 2050 compared to 2005 (under constant climate), but one model projects a decrease. Pasture land expands in some models, which increase the treat on natural vegetation further. Across all models most of the cropland expansion takes place in South America and sub‐Saharan Africa. In general, the strongest differences in model results are related to differences in the costs of land expansion, the endogenous productivity responses, and the assumptions about potential cropland.     

Impacts of increased bioenergy demand on global food markets: an AgMIP economic model intercomparison

Integrated Assessment studies have shown that meeting ambitious greenhouse gas mitigation targets will require substantial amounts of bioenergy as part of the future energy mix. In the course of the Agricultural Model Intercomparison and Improvement Project (AgMIP), five global agro‐economic models were used to analyze a future scenario with global demand for ligno‐cellulosic bioenergy rising to about 100 ExaJoule in 2050. From this exercise a tentative conclusion can be drawn that ambitious climate change mitigation need not drive up global food prices much, if the extra land required for bioenergy production is accessible or if the feedstock, for example, from forests, does not directly compete for agricultural land. Agricultural price effects across models by the year 2050 from high bioenergy demand in an ambitious mitigation scenario appear to be much smaller (+5% average across models) than from direct climate impacts on crop yields in a high‐emission scenario (+25% average across models). However, potential future scarcities of water and nutrients, policy‐induced restrictions on agricultural land expansion, as well as potential welfare losses have not been specifically looked at in this exercise.     

Foreign ownership and the enforcement of corporate governance reforms

This study examines whether a stronger corporate governance enforcement regime influences the investment decisions of foreign portfolio investors in an emerging market context. Using a natural experiment provided by an Indian corporate governance regulatory reform introduced in 2000, but for which stricter sanctions for non-compliance were imposed in 2004 our results provide strong evidence that governance reforms that include stricter sanctions for non-compliance lead to higher foreign ownership. Depending on specifications, the difference-in-differences estimates show that, on average, the effect is up to 2.8% increased foreign ownership post regulatory reform of 2004. The paper adds to the debate on simultaneity between foreign ownership and corporate governance as we show that in the context of an emerging market corporate governance regulations are extremely important in attracting foreign investors. In the context of prevalence of weak enforcement (of existing regulations) in emerging markets, this study provides empirical support to the notion that strictly enforcing the existing governance regulations has the potential to attract higher level of foreign investment. The results suggest that policy measures aimed at attracting foreign investors in emerging markets should not only concentrate on adopting the best international corporate governance practices but should also signal strong enforcement of these regulations by assigning significant penalties for non-compliance.

     

The long-term impact of education on dietary diversity among women in Zimbabwe

Education is perceived to have a positive impact on a variety of health outcomes. However, it is unclear how causal this association is or what could account for the observed relationship, especially in low-income countries. This study examined the educational gradient in dietary diversity among young women using individual-level survey data from Zimbabwe. A parametric fuzzy regression discontinuity design was used in the empirical analysis, with school reform exposure serving as an instrumental variable for educational attainment. The results show that increased schooling improves dietary diversity among women and that this effect is large and statistically significant. An examination of the potential mechanisms by which education improves dietary diversity revealed that women with more education are more likely to engage with print media by reading newspapers or magazines, to be literate, to access prenatal care when pregnant, to be wealthier, to have fewer children, and to live in metropolitan areas. These findings suggest that expanding educational opportunities, particularly for young girls in developing countries like Zimbabwe, could be a useful policy strategy to promote healthy eating among young women and, as a result, could enhance population health and nutrition outcomes.     

Orderbook demand for corporate bonds

We examine the determinants of investor demand for corporate bond offerings using novel data on the primary market orderbook size. We find that credit risk and bond market presence are significant in explaining investor demand. These effects are more pronounced during the crisis periods including the global financial crisis and eurozone crisis as well as during the postcrisis periods. Our results also highlight the size of the bond investor order depends on information asymmetry costs and the benefit of diversifications, as investor demand is lower for new issuers as well as very frequent issuers. The levels of investor demand have important economic consequences for bond issuers as high investor demand shortens the time to subsequent bond issues and potentially reduces the firm's cost of capital at issuance.     

Why Can't I Trade? Exchange Discretion in Calling Halts*,†

Stock exchanges are important intermediaries in how firm information enters price. Trading halts are a key tool, often exercised at the exchanges' discretion, to prevent extraordinary price volatility when new information arrives. We investigate how exchanges use discretion and whether the discretion alters the effectiveness of the halts. We provide evidence consistent with halts reflecting the preferences of listed firms rather than the stated exchange objectives (i.e., minimizing excess volatility and off-equilibrium trades). Furthermore, when exchanges exercise more discretion (unexplained by firm and information characteristics), the halts are less effective. Specifically, halts with more discretion are less likely to resume trading with efficient prices and are more likely to have been called unnecessarily (i.e., little to no price movement during the halt). These findings are consistent with exchanges using halts to cater to listed firms rather than to meet exchange objectives such as minimizing excess volatility or avoiding trades at off-equilibrium prices.     

Reviewing the intellectual structure of product modularization: Toward a common view and future research agenda

Product modularization in new product development has attracted considerable interest among scholars and practitioners from diverse fields of specialization. This has resulted in cross-disciplinary diversity in the field, diverting attention from its overall intellectual structure and hindering the development of a common view and shared concepts. Extant research lacks an integrative review, transcending a focal discipline that could identify gaps and ambiguities while making recommendations to advance the field. Considering a period of 30 years (1990–2020), we generate a data set of 2988 citing publications to which we apply a co-citation analysis. Thereby, we uncover the intellectual structure of the field and find three research perspectives that represent key knowledge bases: (1) product system, (2) production system, and (3) organizational system. Delimiting the data set into four periods, we can track developments over time, where we notice an increasing disintegration of the product system perspective, which is rooted in the discipline of engineering design. Within the two other perspectives, we document extensive dynamism in terms of publications, especially in the two most recent periods, indicating an active discussion and a potential receptivity to new trends. For these periods, we also identify an emerging cluster of fundamental publications and an increasing emphasis on the concept of system architecture. Leveraging the synthesis of these results, we forge links between neighboring disciplines and recommend avenues for further research, ideally to develop a more common view.     

Trading concentration and industry-specific information: an analysis of auto complaints

Review of Quantitative Finance and Accounting - We investigate whether sophisticated investors’ trading concentration in the auto industry is associated with their use of auto complaint data....