Narco‐frontiers: A spatial framework for drug‐fuelled accumulation

Based on historical and ethnographic research conducted in a region of northwest Colombia and drawing on the stories of novelist Gabriel García Márquez, this article develops the analytical concept of “narco‐frontiers” to help disentangle the confusing political economy of agrarian spaces affected by the violence of the drug war. As socially produced spaces, narco‐frontiers emerge through the convergence of four interlocking processes: uneven development, internal colonialism, political violence, and narco‐fuelled dispossession. Although often depicted as “ungovernable” or “stateless” spaces, narco‐frontiers are wracked by extra‐legal regimes of rule in which the state is simply one actor among others. With the drug trade inducing violent agrarian change all over the world—from Colombia to Afghanistan, Burma to Central America—this article offers a spatial‐historical framework for understanding these dramatic transformations.     

Shifting frontier dynamics in Latin America

The concepts of resource frontier and commodity frontier are often treated interchangeably. This article suggests the benefits of clarifying these concepts because frontiers remain important analytics for understanding drastic land‐use changes and other socio‐environmental transformations. Based on long‐term field research in different parts of South and Central America, we use frontier concepts as heuristic devices to analyze heterogeneous frontier situations and make broader generalizations. Our synchronic and diachronic analyses of frontier dynamics elucidate different frontier modalities and shifting frontier expansions. The concept of commoditizing resource frontier is introduced to explain recent frontier‐makings in Brazilian Amazonia and Cerrado and in the Nicaraguan Río San Juan. Although earlier frontier research took a short‐term time perspective and created conceptualizations based on a single modality of a particular period, our longitudinal analysis shows that drastic changes and complex overlappings are the hallmarks of frontier dynamics.     

Territorialization in a closing commodity frontier: The Yasuní rainforests of West Amazonia

In Ecuador's Yasuní rainforests and the lived history of the Waorani that live there, the commodification of first rubber and then oil shaped territorialization into particularly violent form. The formative role of rubber production in the 19th century involved local despots' imposition of a regime of violence. Reacting to this violent capitalist system, individual Waorani forged new socio‐spatial territories through violence with rubber slavers and cooperation with the Taromenane, a people who continue to live in isolation. Today, an oil complex exerts control to bring the end of Yasuní's commodity frontier, even while the Waorani Nation and Taromenane hold legal rights to parts of the forests. In this article, I analyse how rubber and oil exploitation has unfolded as capitalist territorial violence, spurring Waorani and Taromenane social expressions and political mobilizations that are at times violent, but primarily not.     

Accounting for Environmental Influences in Stochastic Frontier Models: With Application to International Airlines

The principal aim of this paper is to measure the efficiency of international airlines. We obtain measures of technical efficiency from stochastic frontier production functions which have been adjusted to account for environmental influences such as network conditions, geographical factors, etc. We observe that two alternative approaches to this problem have been proposed in the efficiency measurement literature. One assumes that the environmental factors influence the shape of the technology while the other assumes that they directly influence the degree of technical inefficiency. In this paper we compare the results obtained when using these two approaches. The two sets of results provide similar rankings of airlines but suggest differing degrees of technical inefficiency. Both sets of results also suggest that Asian/Oceanic airlines are technically more efficient than European and North American airlines but that the differences are essentially due to more favourable environmental conditions. Nevertheless, it is among Asian companies that the major improvements in managerial efficiency (technical efficiency with environmental factors netted out) took place over the sample period (1977–1990).     

Efficiency in wine grape production: comparing long‐established and newly developed regions of South Africa

Efficiency, partly based on technology, is central to international competitiveness. This article applies a stochastic frontier inefficiency model to a panel of 77 wine grape farms in South Africa between 2005 and 2015 and allows the comparison of efficiency levels for the old established wine regions with those of newer entrants. Thus, we investigate whether experience plus first choice of location matters more than the follower's advantage of newer technology. In all regions, a greater share of permanent labor and increased supervision raised efficiency, while more inorganic fertilizer and less irrigation has the opposite effect. Innovations in trellising had insignificant effects (except in the old regions) but not replacing old vines reduced efficiency. However, a higher proportion of red varietals also lowered efficiency in the old regions due to a fall in the price of red wine as these farmers continued to concentrate on quality reds. The new regions compensated for falling prices by increasing crop size with irrigation and fertilizer and extending the area planted, but with less concern for quality. This appears to be more successful in efficiency terms, but as international demand for quality wine increases it may be a poor long‐term strategy.     

The Real Estate Frontier

Africa's major cities are experiencing dramatic transformation as a result of growing real estate investment. This article explores whether existing theories can explain the dynamics of urban redevelopment in an African context, and how African cases can inform new theorizations of real estate driven urban transformation. Examining the utility of theories of gentrification and speculative urbanism for understanding urban redevelopment in Accra, Ghana, it argues that urban redevelopment in this city has been shaped by its particular (post)colonial history of state land acquisition and urban planning. Rather than simply identifying empirical variation on established theories, however, the article draws on recent research on commodity frontiers to propose an original theorization of urban redevelopment in Accra in terms of the production of a ‘real estate frontier’. This real estate frontier is characterized by the incremental and contested commodification of state land to enable the growth of the real estate sector in the city. The article concludes by calling for a comparative research agenda to better understand real estate frontiers globally.     

Assessing Total Factor Productivity Growth in Sub‐Saharan African Agriculture

The importance of the agricultural sector in the economic development process is well known. Improvements in agricultural productivity are often found to spill into other areas of a developing economy, potentially improving the standards of living of urban and rural workers alike. Given the importance of this sector, accurate measures of total factor productivity (TFP) across countries can be helpful in identifying conditions, institutions or policies that promote agricultural development. In this article, we estimate TFP growth in agriculture for a panel of 39 sub‐Saharan African countries from 1961 to 2007. We also develop a set of development outcome measures theoretically consistent with strong agricultural performance to serve as external validation of our results. We find that three estimation methods (stochastic frontier, generalised maximum entropy, and Bayesian efficiency) generate relative rankings that are consistent with the development outcome measures, providing external validation of the methods. However, the data envelopment analysis approach performs poorly in this regard.     

On the difficulty of combining actual and potential criteria for an increase in social welfare

Summary. This paper examines two problems associated with the use of potential Pareto criteria in welfare economics. The first problem is the well-known intransitivity of the compensation criteria à la Kaldor-Hicks-Scitovsky. The second problem is the possible incompatibility between the Chipman-Moore-Samuelson criterion and the Pareto principle. The main result of this paper is that, in order to avoid either of these problems, it is necessary and sufficient that the domain to which these criteria are used is such that the Chipman-Moore-Samuelson criterion encompasses completely the Pareto criterion. When interpreted in a standard economic environment, this result is shown to be equivalent to Gorman's requirement of non-crossing between utility possibility frontiers. Received: June 18, 1998; revised version: March 2, 2000     

Is it efficient to analyse efficiency rankings?

When production functions are estimated as frontier functions, the deviations from the frontier can be interpreted as individual inefficiency estimates. Unfortunately, it has recently been shown that efficiency differences across individuals are very often statistically insignificant. In this paper, we will analyse the consequences of the consideration of confidence statements for the reliability of efficiency rankings. The stochastic frontier and confidence intervals derived by Horrace and Schmidt are compared to the COLS approach and bootstrap confidence intervals. The membership function is proposed as a simple Monte-Carlo approximation for the probability for an individual to be the most efficient in the sample. First version received: May 1998/final version accepted: July 1999     

Can We Bootstrap DEA Scores?

This paper discusses the feasibility of bootstrapping DEA scores in the context of the earlier paper by Ferrier and Hirschberg (1997). A simple experiment is devised to demonstrate that in the one-input, one-output case the bootstrap of the non-modified DEA scores is not a failure of the bootstrap.