Auctions with heterogeneous entry costs

If bidders have independent private values and homogeneous entry costs, a first‐ or second‐price auction with a reserve price equal to the seller’s value maximizes social surplus and seller revenue. We show that if entry costs are heterogeneous and private information, then the revenue‐maximizing reserve price is above the seller’s value, a positive admission fee (and a reserve price equal to the seller’s value) generates more revenue, and an entry cap combined with an admission fee generates even more revenue. Social surplus and seller revenue may either increase or decrease in the number of bidders, but they coincide asymptotically.     

Monetary policy and macroeconomic stability in Latin America: The cases of Brazil, Chile, Colombia and Mexico

In 1999, new monetary policy regimes were adopted in Brazil, Chile, Colombia and Mexico, combining inflation targeting with floating exchange rates. These regime changes have been accompanied by lower volatility in the monetary stance in Brazil, Colombia and Mexico, despite higher inflation volatility in Brazil and Colombia. This paper estimates a conventional New Keynesian model for these four countries and shows that: i) the post-1999 regime has been associated with greater responsiveness by the monetary authority to changes in expected inflation in Brazil and Chile, while in Colombia and Mexico monetary policy has become less counter-cyclical, ii) lower interest-rate volatility in the post-1999 period owes more to a benign economic environment than to a change in the policy setting, and iii) the change in the monetary regime has not yet resulted in a reduction in output volatility in these countries.     

Factors affecting success in the professional entry exam for accountants in Brazil

This paper explores factors that have affected the success of candidates in the professional entry exam conducted by Brazil’s Federal Council of Accounting. We analyse results of 18,948 candidates who sat for the exam in 2012, using a logistic regression model and the key indicators used by government to monitor the performance of higher education institutions (HEIs) and the characteristics of candidates. We find that success is related positively to the quality of the HEIs from which candidates graduated and to a measure of student ability that is used widely in Brazil. We find also that males perform better than females and that younger candidates perform better than older candidates. The geographical region of Brazil within which candidates completed the exam was also significant. The insights provided will help public policy-makers in Brazil, and the Brazilian accounting profession, to understand key factors associated with current low pass rates.     

Dollarization persistence and individual heterogeneity

A salient feature of financial dollarization, arguably the one that causes most concern to policymakers, is its persistence: even after successful macroeconomic stabilizations, dollarization ratios often remain high. In this paper we argue that this persistence is connected to the fact that the participants in the dollar deposit market are fairly heterogenous, and so is the way they form their optimal currency portfolio. We develop a simple model when agents differ in their ability to process information, which turns out to be enough to generate persistence upon aggregation. We provide empirical evidence that is consistent with this claim.     

Ambiguity and the value of information revisited

We analyze the value that decision makers place on the acquisition of information that partially or completely resolves uncertainty over the correct distribution of outcomes. We distinguish two sources of ambiguity of a given message service: posterior uncertainty over the correct probability distribution and uncertainty over the message which will be received. Given this distinction, we present a model where attitudes towards the two sources of ambiguity are separated and we study how these attitudes affect the value of information. The analysis clarifies and integrates seemingly contradictory results obtained previously in the literature.     

A Bayesian Net Benefit Approach to Cost‐effectiveness Analysis in Health Technology Assessment

The economic literature on cost‐effectiveness analysis in the context of decisions by health technology assessment agencies assumes as the quantity of interest a linear combination of the mean of the sampling distribution of the effectiveness and the cost. We argue that this is not always reasonable. Our reasons for this assertion are that (i) treatments are compared on the basis of mean values, and for some useful models the mean of the distribution of the cost, which is conditional on the available data, does not exist, and (ii) even for models for which the mean does exist, it might not constitute an accurate reflection of the distribution. This paper presents a general Bayesian cost‐effectiveness analysis of a single treatment, where the quantity of interest is the distribution, conditional on the data, of the net benefit. This approach permits a natural extension to several treatments, which enables us to make a statistical comparison. Illustrations with treatment comparisons for real and simulated data are given.     

宝丽来之战略标准化管理模型:10项行动原则

摄影业回望 摄影业(photographic indus-try)已经被重新定义为"影像"业("imaging"industry),其组成也不再仅限于照相机、卤化银感光材料.在今天的美国,影像业已经发展成为了包含许多门类、税收高达1550亿美元的重要产业.除了业余和专业的摄影外,影像业还包括复印产品(copying products)和服务、形象艺术(graphic arts)、桌面出版系统(desktop publish-ing)、计算机辅助图像设计、医学诊断、显微镜方法、印刷以及消费者视频(consumer video)等等.     

全面保证维修合同的制订

本的目的是针对西班牙国内市场的公共机构。分析首次制订全面保证维修合同的过程,它涉及成套装置的技术管理。CLIESA公司与Rovira i virgili大学在1998年签订合同,在4-6年期间CLIESA是合同的受益。这个分析根据当前维修的特点和意义来研究维修工作的主要内容,也就是针对签约装置的价值、利润和可靠性的活动。这些内容涉及到经济、能源、安全、卫生以及环境等方面。