Count data stochastic frontier models, with an application to the patents–R&D relationship

This article introduces a new count data stochastic frontier model that researchers can use in order to study efficiency in production when the output variable is a count (so that its conditional distribution is discrete). We discuss parametric and nonparametric estimation of the model, and a Monte Carlo study is presented in order to evaluate the merits and applicability of the new model in small samples. Finally, we use the methods discussed in this article to estimate a production function for the number of patents awarded to a firm given expenditure on R&D.     

Export Performance of Brazilian States to Mercosul and Non-Mercosul Partners

ABSTRACT

We investigate the role of the trade-weighted real exchange rate and foreign income on the export performance of Brazilian states, differentiating between Mercosur and non-Mercosur partners. The results indicate that state exports are price and income inelastic. There are differences in the influence of the different trade factors between the two groups of partners. One crucial difference is the relevance of the real exchange rate effect for non-Mercosur partners. This might be associated with the existence of specific rules for Mercosur that can overcome the usual effect of relative competitiveness associated with movements in the real exchange rate.     

Protecting software development projects against underestimation

When a project in progress has been seriously underestimated, it is essential to figure out how much additional effort is required to complete it within its original scope and delivery date. This article posits that project contingencies should be based on the amount it will take to recover from the underestimation, and not on the amount that would have been required had the project been adequately planned from the beginning, and that these funds should be administered at the portfolio level. A model to calculate the required funds is developed.     

EFFECTS OF FEDERAL CONSTITUTIONAL GRANTS IN BRAZILIAN MUNICIPALITIES

The objective of the present study is to verify the flypaper effect of 476 Brazilian municipalities from 2005 to 2012, considering the new variables as instruments of grants. Political alignment, alignment of the party, and coalition of the mayor with the federal president and of the state governor were considered as instruments of grants. A municipal tax autonomy index was considered as a control variable, which represents the percentage of local taxes in the municipal total revenues. The results allow concluding that the flypaper effect exists in Brazilian municipalities and is intensified by the alignment of the representatives in the same way of theoretical literature (Hamilton 1983; Hines & Thaler 1995; Inman 2008) and previous empirical studies in Brazil. Moreover, evidences of higher flypaper effect were found in municipalities with low tax autonomy.     

Enhancing individual entrepreneurial orientation measurement using a metacognitive decision making-based framework

Entrepreneurship, and individuals’ predisposition toward entrepreneurial activities in particular, i.e. Individual Entrepreneurial Orientation (IEO), has been gaining increasing relevance in academia and management practice alike. Understanding IEO is a critical element not only for its promotion, but for better and more informed managerial and investor decision making as well. As such, this study proposes a new framework for understanding and measuring IEO based on the integrated use of cognitive mapping and the interactive multiple criteria decision making (TODIM) method. We present the steps for building such a framework, as well as a practical application of these steps. The results are promising: the methodology applied allowed a large number of determinants of IEO and their relationships to be mapped; and, subsequently, ranked and weighted for the creation of an IEO measurement tool. The implications of the resulting framework for theory and practice, its limitations and possibilities for further research are also discussed.     

Disclosure strategies among S&P 500 firms: Evidence on the disclosure of non-GAAP financial measures and financial statements in earnings press releases

This paper examines the prominence of non-GAAP financial measures in press releases, testing whether managers emphasize these adjusted performance measures relative to GAAP numbers in four different settings where their disclosure helps managers reach strategic earnings benchmarks on a pro forma basis when they would otherwise fall short using GAAP numbers. Moreover, this research investigates the information content of disclosures reconciling non-GAAP to GAAP earnings (and other financial statements). The data is hand collected from quarterly earnings press releases of a sample of S&P 500 firms during the 2001–2003 period. In this particular sample, the disclosure of non-GAAP financial measures is frequent. The results suggest that managers strategically give more prominence to non-GAAP measures than to GAAP figures when the GAAP earnings number falls short of a benchmark but the non-GAAP earnings number does not. This disclosure strategy may influence the perception of the firm's financial results. Furthermore, the results suggest that both the reconciliation and the non-GAAP income statement contain information useful for users.     

Performance pay and productivity of low- and high-ability workers

Existing literature has mainly focused on analyses of the overall effect of a change in the incentive scheme. Lazear (Lazear, E., 2000, “Performance pay and productivity”, American Economic Review, 90, 1346–1361.), for example, estimates the average increase in productivity after a firm switches from an hourly-wage scheme to a piece-rate plus basic-wage scheme. His paper does not, however, account for the fact that many workers remained within the basic-wage range after the change was made in the incentive scheme. In the present paper we explore how the incentive effect might have been different for those workers seeking the basic wage, and those workers seeking the piece-rate component of the wage. Interestingly, the change in productivity is approximately the same in percentage terms for both types of workers.     

Pricing Participating Inflation Retirement Funds Through Option Modeling and Copulas

Abstract

Pension plans and life insurances offering minimum performance guarantees are very common worldwide. In the Brazilian market, the customers of a common type of defined contribution plan have the right to receive, over their savings, the positive difference between the return of a specified investment fund, usually a fixed income fund, and the minimum guaranteed rate, commonly defined as the composition of a fixed interest rate and a floating inflation rate. This instrument can be characterized as an option to exchange one asset, the minimum guaranteed rate, for another, the return of the specified investment fund. In this paper we provide a closed formula to evaluate this liability that depends on two stochastic rates assuming bivariate normality. We also explore the use of copulas for the modeling of the dependence structure and price the options using Monte Carlo simulation to compare the effects of the copula specification in their values. An application with real data is provided. The model makes use of a one-factor Vasicek framework for the term structures of interest rate and inflation rate.     

A No‐Arbitrage Fractional Cointegration Model for Futures and Spot Daily Ranges

The no‐arbitrage relation between futures and spot prices implies an analogous relation between futures and spot daily ranges. The long‐memory features of the range‐based volatility estimators are analyzed, and fractional cointegration is tested in a semi‐parametric framework. In particular, the no‐arbitrage condition is used to derive a long‐run relationship between volatility measures and to justify the use of a fractional vector error correction model (FVECM) to study their dynamic relationship. The out‐of‐sample forecasting superiority of FVECM, with respect to alternative models, is documented. The results highlight the importance of incorporating the long‐run equilibrium in volatilities to obtain better forecasts, given the information content in the volatility of futures prices. © 2011 Wiley Periodicals, Inc. Jrl Fut Mark 33:77–102, 2013