Nonlinear mean reversion in the term structure of interest rates

The expectations hypothesis implies that the yield curve provides information on the future change in the short-term interest rate. However, transaction costs exist in the financial market, which prevent investors from realizing the arbitrage opportunity, when the arbitrage does not fully cover the transaction costs. The purpose of this paper is to assess the effect of transaction costs on the predictability of the term structure by using the threshold vector error correction model, which allows for the nonlinear adjustment to the long-run equilibrium relationship. A significant amount of threshold effect is found, and the adjustment coefficients are regime-dependent. The empirical result supports the nonlinear mean reversion in the term structure of interest rates.     

Testing for non-nested conditional moment restrictions using unconditional empirical likelihood

We propose non-nested hypothesis tests for conditional moment restriction models based on the method of generalized empirical likelihood (GEL). By utilizing the implied GEL probabilities from a sequence of unconditional moment restrictions that contains equivalent information of the conditional moment restrictions, we construct Kolmogorov–Smirnov and Cramér–von Mises type moment encompassing tests. Advantages of our tests over Otsu and Whang’s (2011) tests are: (i) they are free from smoothing parameters, (ii) they can be applied to weakly dependent data, and (iii) they allow non-smooth moment functions. We derive the null distributions, validity of a bootstrap procedure, and local and global power properties of our tests. The simulation results show that our tests have reasonable size and power performance in finite samples.     

A Ricardian Analysis of the Distribution of Climate Change Impacts on Agriculture across Agro-Ecological Zones in Africa

This paper examines the distribution of climate change impacts across the sixteen Agro-Ecological Zones (AEZs) of Africa. We combine net revenue from livestock and crops and regress total net revenue on a set of climate, soil, and socio-economic variables with and without country fixed effects. Although African crop net revenue is very sensitive to climate change, combined livestock and crop net revenue is more climate resilient. With the hot and dry CCC climate scenario, average damage estimates reach 27% by 2100, but with the mild and wet PCM scenario, African farmers will benefit. The analysis of AEZs implies that the effects of climate change will be quite different across Africa. For example, currently productive areas such as dry/moist savannah are more vulnerable to climate change while currently less productive agricultural zones such as humid forest or sub-humid AEZs become more productive in the future. S. Niggol Seo is the Consultant to the World Bank.     

Cost and environmental efficiency of rice farms in South Korea

We examine cost and nutrient use efficiency of farms and determine the cost to move farms to nutrient‐efficient operation using Data Envelopment Analysis (DEA) with a dataset of 96 rice farms in Gangwon province of South Korea from 2003 to 2007. Our findings show that improvements in technical efficiency would result in both lower production costs and better environmental performance. It is, however, not costless for farms to move from their current operation to the environmentally efficient operation. On average, this movement would increase production costs by 119% but benefit the water system through an approximately 69% reduction in eutrofying power (EP). The average estimated cost of each EP kg of aggregate nutrient reduction is approximately one thousand two hundred won. For technically efficient farms, there is a trade‐off between cost and environmental efficiency. We also find that the environmental performance of farms varies across farms and regions. We suggest that agri‐environmental policies should be (re)designed to improve both cost and environmental performance of rice farms.     

Market Consolidation and Productivity Growth in U.S. Wireline Telecommunications: Stochastic Frontier Analysis vs. Malmquist Index

This study analyzes the merger effects for 25 Incumbent Local Exchange Carriers over the period 1996–2005 using stochastic frontier analysis with a time-varying inefficiency model. We further conduct a comparison of results between the stochastic frontier analysis and the Malmquist index method. The empirical results indicate that the sample of telecommunications firms has experienced deterioration in average productivity growth following mergers. Significantly, both approaches suggest that firms that do not merge underperform in terms of average productivity growth.     

Adaptation to Global Warming as an Optimal Transition Process to A Greenhouse World

This article develops the economics of adaptation to global warming as an optimal transition process to future climates. Three policy approaches that encompass the existing theories and policy options are initially outlined: measures based on individuals' social responsibility, government regulations, and carbon pricing. Evidence suggests that each of these options has little chance of being agreed upon and implemented at a global level. The economics of adaptation begins with climate signals which force individuals to adapt. Private adaptations are simultaneously tapped into for carbon dioxide removal and abatement. With increasingly severe damage over time, public sectors will be compelled to work in partnership with individuals and communities. Responding to amplifying climate signals, adaptation strategies evolve in such a way as to accelerate carbon dioxide reductions through low‐carbon energy sources and technological solutions. Adaptations in a centuries‐long timescale would effectively fend off dangerous global warming, but in a manner that is unbearably slow for the world's communities. The optimality of the transition process is based on micro efficiency, coordination, and the public goods nature and unique characteristics of specific adaptation strategies.     

Hedonic shopping motivation and co-shopper influence on utilitarian grocery shopping in superstores

Much prior literature has focused on how hedonic shopping motivation operates in hedonic shopping environments such as shopping malls, but few empirical studies have assessed hedonic shopping motivation effects in utilitarian shopping environments. Combining a field survey (Study 1) with observation using video ethnography (Study 2), our research addresses this issue. Our results empirically reveal how, through both psychological and behavioral routes, hedonic shopper motivation affects purchases in a utilitarian shopping environment, specifically a section of a superstore selling predominantly utilitarian products. Hedonic shopping motivation is found to induce consumer impulsiveness (psychological route) while also encouraging shoppers to stay longer in a store (behavioral route), which when combined result in greater consumer purchases than either route alone. Additionally we observe a moderating effect of co-shopper influences on these two routes. Implications of these findings are discussed.     

Can entrepreneurial orientation improve R&D alliance performance? An absorptive capacity perspective

Research and Development (R&D) alliance studies maintain that alliance partners’ entrepreneurial interactions that pursue innovation opportunities through collective exploitation and exploration of knowledge resources lead to alliance success. Despite the importance of productive resource exchange and generation through such interactions, performance-by-alliance mechanisms remain under-researched. In this study, we develop a theoretical framework hypothesizing that the entrepreneurial orientation (EO) of alliance firms, which underlies their approach to seeking and utilizing resources productively, has a potential impact on their R&D alliance performance, depending on their absorptive capacity (AC). To specify the value creation and capture mechanism in the alliance, we adopt two performance indicators: technological competitiveness and business performance. Findings from a study of 218 small technology-intensive firms conducting R&D alliance projects show that EO translates into business performance through technological competitiveness and that AC leverages the alliance performance implications of EO. The results suggest that EO–AC complementarity is a strategic stimulant that triggers firms to extract greater benefits from R&D alliances.     

Government policy and technological innovation—a suggested typology

Reports on the effects of government's role in stimulating technological development provide a mixed picture. Some policies have had the expected, stimulating effect and other policies have not. We suggest that specific characteristics of technologies that government has sought to stimulate have not been taken into account when governments formulated and implemented innovation policies. While technologies can be characterized according to more dimensions, we focus on two highly relevant characteristics. Technologies either develop in a discrete manner, independent of what specific knowledge has been developed in the past, or develop cumulatively. In addition, network effects may be present or absent in the market anticipated for the products for which a technology is used. A 2×2 typology of technological development ensues. We suggest that governments should consider developing policies to stimulate technological change keeping these characteristics in mind.