Different orders of one-sided scale elasticities in multi-output production

In this paper we explore properties of different orders of one-sided scale elasticities in multi-input multi-output production using the theoretical framework developed by Hadjicostas and Soteriou (Eur J Oper Res 168:425–449, 2006), Krivonozhko et al. (J Oper Res Soc 55:1049–1058, 2004), and others. That framework includes as a special case the well-known operations research method of data envelopment analysis (DEA). A special case of the theory in this paper is the Banker-Morey (Oper Res 34:513–521, 1986a) DEA model for data that include both discretionary and non-discretionary inputs and outputs. Several inequalities among different orders of one-sided scale elasticities are presented. An example is used to illustrate many of the results and ideas of the paper. Finally, we show how the theory and results of this paper can be used to shed some light on implicit Hicks input technical change.     

应对大宗商品危机

近期大宗商品价格出现了三十年未见的大幅波动，并还将持续一段时间。 消费品公司必须了解行业的这一“大循环”、其如何影响业务以及它们如何应对风险管理和成本控制的双重挑战。     

Quantifying the evolution of world trade, 1870–1949

The typical narrative regarding the evolution of world trade prior to World War II refers to a secular rise starting around 1870 and a subsequent collapse beginning in 1914. This narrative, however, is based on measures of trade openness that do not fully take into account purchasing power differences across countries. Due to lack of alternative data, the measures employed in the existing literature are typically based on non-PPP-adjusted trade data denominated by PPP-adjusted GDP data. The present paper seeks to resolve this inconsistency by constructing new trade share estimates for 62 countries, representing 90% of world GDP, for the period from 1870 to 1949. Our estimates combine historical import and export figures with non-PPP-adjusted GDP values that we estimate via the short-cut method. Our estimates confirm qualitatively the narrative of a dramatic rise and fall of world trade over this period. Yet, they indicate that this rise and fall was quantitatively much more pronounced. We find that trade shares were on average 38% higher than previously documented and the world's level of trade openness in 1913 was comparable to that in 1974.     

Competition and Strategic Budget Choices in the Motion Picture Industry*

In this article, we study the effect of differentiation on firms' optimal investments in advertising and product quality in the specific context of the motion picture industry. To guide our empirical analysis, we develop a stylized model uncovering that competition in advertising is the highest for intermediate levels of horizontal differentiation, while product quality increases monotonically in differentiation. We corroborate our theoretical predictions with a large dataset on the movie industry confirming both the inverted U-shaped relationship between advertising and differentiation, and the monotonically increasing relationship between product quality and differentiation.     

Does the Theory of Irreversible Investments Help Explain Movements in Office–Commercial Construction?

Focusing on the relevance of the modern investment theory in explaining movements in office–commercial construction, we attempt to advance existing empirical work in two respects. First, building on recent theoretical advances, we offer an extended empirical model of new construction that takes into account the full opportunity cost of irreversible investments in uncertain environments. Second, using updated time series of office–commercial construction across the nation's largest markets, we empirically estimate such a model to (i) explore investment behavior during 1982–1998 and (ii) detect differences, if any, in such behavior between the pre- and post-recession years. Our empirical findings are fully consistent with the theory of irreversible investments. Such findings highlight both the relevance and the relative importance of uncertainty in underlying demand factors in shaping movements in office–commercial construction, while pointing altogether to more cautionary investment behavior during the post-recession years.     

Remittances and FDI Effects on Economic Growth: A VECM and GIRFs for the Case of Albania

ABSTRACT

This paper analyzes the effects of remittances and foreign direct investments (FDI) on economic growth, gross fixed capital formation (GFCF), and inflation in Albania through a vector error correction model. The results show that remittances Granger-cause positively economic growth short- and long-run and negatively inflation, while no significant relationship has been established between remittances and GFCF. The findings support that remittances, apart from affecting economic growth, disinflate the Albanian economy. With respect to FDI, there are signs that inflation Granger-causes negatively FDI, while there appears to be no relationship between FDI, economic growth, and capital formation.     

Bayesian Modelling of Outstanding Liabilities Incorporating Claim Count Uncertainty

Abstract

This paper deals with the prediction of the amount of outstanding automobile claims that an insurance company will pay in the near future. We consider various competing models using Bayesian theory and Markov chain Monte Carlo methods. Claim counts are used to add a further hierarchical stage in the model with log-normally distributed claim amounts and its corresponding state space version. This way, we incorporate information from both the outstanding claim amounts and counts data resulting in new model formulations. Implementation details and illustrations with real insurance data are provided.     

US Security Strategy and the Gains from Bilateral Trade

We explore the geo‐strategic determinants of bilateral trade flows between the USA and the rest of the world. We develop a three‐party model of security and trade patterns and use data on military assistance and troop deployments over the 1950–2009 period to validate its predictions. We find that security assistance has significant, positive impacts on the shares of bilateral trade between the USA and the recipient country, results that are robust to issues of reverse causality and hold across different sectors.