Gross substitutes and complements: A simple generalization

We extend the gross substitutes and complements framework (Sun and Yang, 2006). Competitive equilibrium with indivisible goods exists under significantly weaker, intuitive and interpretable conditions. A generalized dynamic double-track procedure (Sun and Yang, 2008, 2009) finds the competitive equilibrium outcome.     

Parallel trade,product quality,and welfare

We study the welfare effects of parallel trade (PT) considering investment in quality. We thus revisit the case for PT in research-intensive industries. We find that PT may raise quality, depending on how preferences for quality differ across countries. Conditional on quality, consumer surplus may rise (fall) in the PT-source (PT-recipient) country. While PT reduces ex post welfare, improving quality is a necessary condition for PT to increase welfare ex ante.     

新《行政诉讼法》有关判决方式的文本解读

新《行政诉讼法》关于行政诉讼判决方式的修改内容丰富、特色鲜明、亮点颇多,有必要在法治国家的背景下对其深入解读。新《行政诉讼法》的判决方式具有五大亮点,修订后的判决方式彰显了国家治理的法治现代化。对于新《行政诉讼法》有关判决方式的适用我们需要注意四个层面的内容。新《行政诉讼法》对判决方式的修订并不完美,但是瑕不掩瑜,通过这次修法,我国行政审判将会以判决方式的改变作为基点迎来发展的契机。     

Efficiency Determinants and Capacity Issues in Angolan Insurance Companies

This paper describes a variety of approaches used to assess the efficiency of a sample of major insurance companies in Angola between 2003 and 2012. Starting out with the bootstrapping technique, several data envelopment analysis (DEA) estimates were generated, allowing the use of confidence intervals and bias correction in central estimates to test for significant differences in efficiency levels and input‐decreasing/output‐increasing potentials. Previous studies have focused on the measurement and explanation of the factors affecting the performance rather than the prediction. The use of neural networks combined with DEA results as part of an attempt to produce a model for insurance companies’ performance with effective predictive ability is investigated. The findings indicate that older insurance companies with Portuguese origin tend to be more efficient. Results also suggest that opportunities for accommodating future demand appear to be scarce.     

Foreign Acquisitions,Domestic Multinationals,and R&D

Our aim in this paper is to evaluate the causal effect of foreign acquisition on research and development (R&D) intensity in targeted domestic firms. We are able to distinguish domestic multinational enterprises (MNEs) and non‐MNEs, which allows us to investigate the fear that the change in ownership of domestic MNEs to foreign MNEs leads to a reduction in R&D activity in the country. Overall, our results give no support to the fears that foreign acquisition of domestic firms leads to a relocation of R&D activity in Swedish MNEs. Rather, in this paper, we find robust evidence that foreign acquisitions lead to increasing R&D intensity in acquired domestic MNEs and non‐MNEs.     

The Bertrand Paradox,the Useless Auctioneer and the Launhardt Model

We revisit the Cournot–Bertrand debate in the light of Cournot, Edgeworth and Launhardt, tracing back to Launhardt the origin of price competition in duopoly models with constant returns to scale. Then, we discuss the formalisation of consumer utility function for differentiated products, first appearing in Launhardt and then in Bowley. This allows us to point out that assuming that firms know the demand function(s) is equivalent to assuming that they know the structure of consumer preferences. Therefore, we argue that there is no role for the auctioneer, either in Cournot or in Walras.     

Profit Leak? Pre‐Release File Sharing and the Music Industry

Using data from an exclusive file‐sharing Web site that allows users to share music files using the BitTorrent protocol, I exploit exogenous variation in the availability of sound recordings in file‐sharing networks to isolate the causal effect of file sharing of an album on its sales. Using within‐album variation in illegal downloads and sales, I find that the effect is essentially zero: The elasticity of sales with respect to illegal downloads is one‐tenth of one percentage point. However, the finding that file sharing is not harmful to individual artists is not inconsistent with the well‐documented fact that file sharing is harmful to the music industry (the fallacy of composition). More important, I find that file sharing benefits more established and popular artists who are signed to major labels, which is consistent with recent industry trends.     

Workplace organization and innovation

Abstract This study uses panel data on Canadian establishments to explore the relationship between the organization of work – in particular decentralization, information‐sharing, and incentive pay schemes – and innovation. Like other studies, ours finds a clear positive link between these factors. However, the data give strong indications that this relationship is not causal. We show that: (1) the correlation between workplace organization and innovation holds for information‐sharing but is much weaker for decentralized decision‐making or incentive pay programs, (2) controls for unobserved heterogeneity significantly weaken results, and (3) lagged variables give no clear evidence that organizational changes predate innovation.