A revised Tobit procedure for mitigating bias in the presence of non-zero censoring with an application to milk-market participation in the Ethiopian highlands

Fixed transactions costs that prohibit exchange engender bias in supply analysis due to censoring of the sample observations. The associated bias in conventional regression procedures applied to censored data and the construction of robust methods for mitigating bias have been preoccupations of applied economists since Tobin [Econometrica 26 (1958) 24]. This literature assumes that the true point of censoring in the data is zero and, when this is not the case, imparts a bias to parameter estimates of the censored regression model. We conjecture that this bias can be significant; affirm this from experiments; and suggest techniques for mitigating this bias using Bayesian procedures. The bias-mitigating procedures are based on modifications of the key step that facilitates Bayesian estimation of the censored regression model; are easy to implement; work well in both small and large samples; and lead to significantly improved inference in the censored regression model. These findings are important in light of the widespread use of the zero-censored Tobit regression and we investigate their consequences using data on milk-market participation in the Ethiopian highlands.     

Trading frequency and asset pricing on the London Stock Exchange: Evidence from a new price impact ratio

This study proposes a new price impact ratio as an alternative to the widely used Amihud’s (2002) Return-to-Volume ratio. We demonstrate that the new price impact ratio, which is deemed Return-to-Turnover ratio, has a number of appealing features. Using daily data from all stocks listed on the London Stock Exchange over the period 1991–2008, we provide overwhelming evidence that this ratio, while being unequivocal to construct and interpret, is also free of a size bias. More importantly, it encapsulates the stocks’ cross-sectional variability in trading frequency, a relatively neglected but possibly important determinant of stock returns given the recently observed trends in financial markets. Overall, our findings argue against the conventional wisdom that there is a simple direct link between trading costs and stock returns by strongly suggesting that it is the compound effect of trading frequency and transaction costs that matters for asset pricing, not each aspect in isolation.     

Tripartite consultation: an emergent form of governance shaping employment relations in China

This article examines China's approach to industrial consultation by examining six tripartite bodies at the national, provincial and county levels. It argues that the institutionalisation of tripartitism is consistent with China's overall approach to market reform being characterised by experimentalism, gradualism, dynamism and a gradual softening of party domination. Despite limitations, it is accepted that China is building a transition tripartite system that is bolstering the autonomy and representational capacity of the social partners.     

Is There a Third Way for Industrial Relations?

There has been little systematic analysis of what the ‘Third Way’ means in the sphere of industrial relations. This paper examines the record of the New Labour government in order to evaluate the distinctiveness, innovation and coherence of its industrial relations policy. It argues that many of the limitations of this policy result from the institutional context within which it was introduced. In comparative perspective, Third Way industrial relations can be thought of as a policy adaptation specific to centre–left governments in weakly co‐ordinated liberal market economies.     

Delta:为电源提供强大动力

如果你在电子产品超市中购物,很有可能买到采用Delta Electronics公司产品的物品。这家总部位于中国台北的公司拥有大量知名客户,其中包括元器件、消费电子产品以及IT设备制造商。它的电源管理产品包括适配器、转换器、镇流器、反相器和UPS。     

Beyond ‘Euroland’: British trade unions,the single currency and European integration

British trade unions have differing perspectives as to the desirability of UK membership of the eurozone. This paper provides a critical review of the spectrum of union views and highlights key points of disagreement and areas of common ground. An agenda for further reflection upon the euro by the unions is also offered. Finally, the paper considers union positions on the implications of the wider process of European integration for industrial relations.