EFFECTS OF ALTERNATIVE CHINESE POLICIES ON THE WORLD GRAINS MARKET

The implications for the world grains market of a reduction in China's domestic absorption, and of the removal of its key manufacturing protection, are analysed in this paper. These policy changes are modelled both alone and together with grain self-sufficiency in China and with reduction in farm support in the US and EC. In themselves, the reduction in absorption and removal of manufacturing protection in China would have only marginal effects on the world grains market. If, however, China were to achieve grain self-sufficiency while adopting these macroeconomic and trade policies, world grain prices and trade would fall considerably. In contrast, even a partial removal of protection in the US and EC, simultaneously with the above Chinese macroeconomic and trade policy changes, could substantially increase world grain prices and trade. These positive effects would be considerably reduced if at the same time China were to become self-sufficient in grain.     

Sovereign ceilings “lite”? The impact of sovereign ratings on corporate ratings

Although credit rating agencies have gradually moved away from a policy of never rating a corporation above the sovereign (the ‘sovereign ceiling’), it appears that sovereign credit ratings remain a significant determinant of corporate credit ratings. We examine this link using data for advanced and emerging economies over the period of 1995–2009. Our main result is that a sovereign ceiling continues to affect the rating of corporations. The results also suggest that the influence of a sovereign ceiling on corporate ratings remains particularly significant in countries where capital account restrictions are still in place and with high political risk.     

Optimal investment and production decisions and the value of the firm

We explore the effects of uncertainty on a firm that can respond by modifying its investment or production schedule (or both simultaneously) to variations in output price. Investment may increase capacity and/or reduce costs. We consider a firm with finite resources.Our model uses option theory instead of the more traditional net present value framework. One of the early papers using this approach is Brennan and Schwartz (1985) in which an investment project to extract a finite natural resource is valued. In that paper, the value of the firm is a function of two state variables, the finite resource to be extracted (output to be produced in the future) and the commodity spot price. In order to maximize firm value, the manager can respond by modifying one control variable, the production level. In our model we handle instead three state variables (spot price, resources, accumulated investment) and two control variables (production rate and investment rate), and solve numerically.We obtain both the value and the optimal policy of a firm that has investment projects that increase capacity and/or reduce costs and illustrate optimal policies as resources and available investments decrease over the life of the firm. Firms may start by only investing, then invest and produce, to end only producing.We thank Scott Wo, the referee and the editor for their comments and suggestions. Cortázar and Lowener acknowledge the financial support from FONDECYT and FONDER.     

油气公司采用根本原因分析方法提高设备的可靠性

你的继续改进工作在取得初步成效后,是否仍以预定计划为中心而未取得实际进展?你们公司是否把长期存在的问题作为开展工作的动力?你们是否在不同的场所经常重复分析同样的问题?在你们公司里,对于什么是可靠性的问题,每个人是否都有不同的理解?我们公司在拉丁美洲5个国家中都有许多油田和气田,并且都遇到了困难,为了创造持久的利润,我们决定对不断改进的方法全面地进行标准化。改进的方法有:(1)把问题和机遇按轻重缓急依次排列起来;(2)分析这些问题和机遇的根本原因(RC);(3)开发和实施解决方法;(4)继续研究上述各种方法的利润。     

Financial materiality in the informativeness of sustainability reporting

This study examines whether financial materiality in environmental, social, and governance (ESG) disclosure benefits the stock market by increasing the amount of accessible and relevant firm-specific information. Based on the value relevance of information and the principle of financial materiality, we demonstrate that disclosing material ESG information increases stock price informativeness. We conduct an automated content analysis of 150,000 electronic documents filed by firms listed on the S&P/TSX Composite Index from 1999 to the end of 2014. Our findings show that ESG disclosure is indeed value relevant for investors and that financial materiality in ESG disclosure leads to more informative stock prices. In addition, the effect of ESG disclosure on stock price informativeness differs across the ESG components, being more sensitive to the social component. This study contributes to the literature on sustainability reporting, and in particular to the ongoing discussion about whether the financial materiality of ESG issues matters. This study also deepens the understanding of agency theory predictions about the economic effects of ESG disclosure.     

A UNIFIED PRESENTATION OF COMPETITION ANALYSIS IN TWO-SIDED MARKETS

The goal of this paper is to present quantitative tools to manage competition policy analysis in two-sided platforms, based on a common framework for transaction and non-transaction platforms. We explore tools for relevant market definition [Critical Loss Analysis and a small but significant non-transitory increase in price (SSNIP) test], unilateral effects indicators [Upward Pricing Pressure (UPP) and Gross Upward Pricing Pressure Index (GUPPI)] and tests for exclusionary practices. We review dispersed results in the literature and fill the gaps where appropriate. We highlight the required changes from the usual one-sided market framework and tools. While discussions of antitrust tools can be found in specialized forums devoted to advances in competition policy analysis, we organize the material in an integrated framework.     

A continuous time approach to the pricing of bonds

This paper develops an arbitrage model of the term structure of interest rates based on the assumptions that the whole term structure at any point in time may be expressed as a function of the yields on the longest and shortest maturity default free instruments and that these two yields follow a Gauss-Wiener process. Arbitrage arguments are used to derive a partial differential equation which must be satisfied by the values of all default free bonds. The joint stochastic process for the two yields is estimated using Canadian data and the model is used to price a sample of Government of Canada bonds.