Productivity,technical efficiency and technological change in French agriculture during 2002-2015: a Färe-Primont index decomposition using group frontiers and meta-frontier

The objective of the article is to assess productivity change in French agriculture during 2002–2015; namely, total factor productivity (TFP) change and its components – technological change and efficiency change. For this, we use the Färe-Primont index which verifies the multiplicatively completeness property and is also transitive, allowing for multi-temporal and -lateral comparisons. We investigate the extent of heterogeneity within each type of farming sub-sample in terms of TFP change, with the help of the Herfindahl-Hirschman index (HHI). In addition, to compare the technologies among the five types of farming considered, we extend our analysis to the meta-frontier framework. Results indicate that during 2002–2015, all farms experienced TFP progress. The smallest average increase was experienced by the dairy farms and the largest by the field crop farms and the beef farms. The latter had the strongest technological progress but a deterioration in efficiency, while the opposite was found for field crop farms. The analysis of HHI reveals that sheep or goat farms are the most homogenous in terms of the direction of TFP change experienced over the period 2002–2015. The meta-frontier analysis shows that field crop farms’ technology is the most productive of all the types of farming.     

Discrete representations of a continuum economy

We consider an atomless economy in which the continuum of agents is represented by a real interval. By dividing the interval and associating to every agent in each subinterval the same initial endowments and preferences, we define sequences of discrete economies as approximations to the initial continuum economy. We obtain convergence results for the core (or, alternatively, for the set of Walrasian allocations) of the continuum economy in terms of the cores of the approximating discrete economies. Finally, we state some counterexamples which provide a boundary for more general results in this framework. Received: 29 December 2000 / Accepted: 28 April 2002 C. Hervés and E. Moreno acknowledge support by Research Grant BEC2000-1388-C04-01 from the Dirección General de Investigación Científica y Técnica (DGICYT), Spanish Ministry of Education.?E. Moreno acknowledges support from the Spanish Ministry of Education through a post-doctoral fellowship in 1997 and from a Training and Mobility of Researchers (E.C.) fellowship in 1998 while visiting Universidade Nova de Lisboa.     

Dual Representations of Non-Parametric Technologies and Measurement of Technical Efficiency

This paper extends the recent work by Frei and Harker on projections onto efficient frontiers (1999) in three ways. First, we provide a formal definition of the production set as the intersection of a finite number of closed halfspaces. We emphasize the necessity of a complete enumeration of the supporting hyperplanes to define the production set properly. We focus on the problem of exhaustive enumeration of the supporting hyperplanes to characterize the production set. Second, we consider the problem of an arbitrary-norm projection on the boundary of the production set. We use the concept of the Hölder distance function and we derive the necessary mathematics to calculate distances and projections of inefficient DMUs onto the efficient frontier. Third, we introduce a relevant weighting scheme for inputs and outputs so that the Hölder distance function respects the commensurability axiom defined by Russell (1988). Finally, we present an illustration using the same data set as Frei and Harker (1999) to highlight some of the extensions proposed in the paper.     

Returns to Scale on Nonparametric Deterministic Technologies: Simplifying Goodness-of-Fit Methods Using Operations on Technologies

Thepurpose of this short article is to simplify goodness-of-fitmethods to obtain qualitative information about returns to scalefor individual observations. Traditional and new goodness-of-fitmethods developed for estimating returns to scale on nonparametricdeterministic reference technologies are reviewed. Using compositionrules for technologies with specific returns to scale assumptions,we show how these goodness-of-fit methods can be simplified inthe case of convex technologies (Data Envelopment Analysis (DEA)models).     

Imports as Product and Labour Market Discipline

This article tests the pro‐competitive effect of trade in the product and labour markets of UK manufacturing sectors between 1988 and 2003 using a two‐stage estimation procedure. In the first stage, we use data on 11,799 firms from 20 manufacturing sectors to simultaneously estimate mark‐up and workers' bargaining power parameters according to sector, firm size and period. We find a significant drop in both the mark‐up and the workers' bargaining power in the mid‐1990s. In the second stage, we relate our parameters of interest to trade variables. Our results show that imports from developed countries have significantly contributed to the decrease in both mark‐ups and workers' bargaining power.     

The maastricht fiscal criteria: Required but ineffective?

The paper investigates the rationale for, and the effectiveness of the fiscal criteria in the Maastricht treaty against the background of two questions: What are the incentives for an unsound fiscal policy in EMU, and what are the (potential) negative externalities if such a policy were to occur. The paper argues that EMU creates both incentives for a higher fiscal deficit while respecting solvency, and incentives for not rectifying a potentially unsustainable debt level once one is a member. Unsound fiscal policy could trigger important negative extermalities for the other member countries. The paper concludes that the current fiscal provisions of the Maastricht treaty are not sufficiently well defined and the envisaged sanctions not strong enough to enforce a disciplined fiscal stance. This leads to proposals of supplementary measures for surveillance and alternative sanctions. Staying within the framework of the Maastricht treaty, it is strongly suggested that both debt and deficit criteria should be strictly surveyed, but in view of their conceptual and operational deficiencies they should be supplemented by additional indicators. Based on this broader measurement concept, it is proposed to use semi-automatic and market-led sanctions to enforce a disciplined fiscal stance.     

Deterrence and cooperation: A classification of two-person games

In two-person games in normal, bilateral threats succeed in self-enforcing any imputation. We discriminate among imputations by looking at various features of deterring threats. As a result we obtain a classification of two-person games. Finally a duopoly example is analysed.     

Comparing French and US hospital technologies: a directional input distance function approach

French and US hospital technologies are compared using directional input distance functions. The aggregation properties of the directional distance function allow comparison of hospital industry-level performance as well as standard firm-level performance with regard to productive efficiency. In addition, the underlying constituents of efficiency?–?in the short run, congestion and technical inefficiency, and in the long run, scale inefficiency?–?are analysed by decomposing the overall measure. By virtue of using the directional distance function, it is also possible to obtain an estimate of a lower bound on allocative inefficiency. It is found that French and US hospitals use quite different technologies. Long run scale inefficiencies cause most of the French hospitals’?inefficiency, while short run technical inefficiency is the main source of overall productive inefficiency in the US hospitals.     

Recent trends and structural breaks in the US and EU15 labour productivity growth

This article examines shifts in labour productivity growth in the US and in Europe between 1970 and 2007 based on econometric tests of structural breaks. Additionally, it makes use of time-series-based projections of labour productivity growth up to 2009 in order to detect breaks depending on confidence intervals of the projections. The identification of structural breaks in the US labour productivity growth is far from obvious. A statistically significant break is found in the late 1990s only if at least the 97.5th percentile of forecasts materializes in the future, which means that despite a clear pick up in productivity growth in the second half of the 1990s, the size of the hump is not large enough compared with past variations to make this change a statistically significant break. However, a significant break point is detected in the mid-1990s for the difference in labour productivity growth between the US and the EU15, even when controlling for the convergence of Europe towards the US productivity levels that has contributed to higher European performance in the early catch up phase. Finally, within Europe, the accumulation of Information and Communication Technology (ICT) capital seems to be related to differences in the shifts in structural labour productivity growth across countries.     

Information and size of coalitions

We consider a set of asymmetrically informed agents, where the information of each trader is susceptible of being altered when she becomes a member of a coalition. For this, we consider a general rule that depending on the coalition, a signal (or an information partition) is assigned to each member of the coalition. We set examples showing that Grodal’s (Econometrica 40:581–583, 1972), Schmeidler’s (Econometrica 40:579–580, 1972) and Vind’s (Econometrica 40:585–586, 1972) core characterizations of a continuum economy may fail in this general informational setting. However, under mild assumptions on the rule, we extend Schmeidler’s and Vind’s results to economies that allocate information to agents in each coalition according to the rule. We then focus on information mechanisms based on the size of coalitions and provide a general characterization result for the corresponding cores. Moreover, we pay close attention to the rule that assigns the shared information to each member of specific coalitions. We prove that the resulting cores are exactly the same independently of whether arbitrarily small or large coalitions share information.