Effort optimisation in artisanal fisheries with multiple management objectives,collective quotas and heterogeneous fleets*

In this study, we analyse effort optimisation in common rights‐based joint‐stock artisanal fisheries when several objectives are pursued by the authorities and the fleets are heterogeneous. The purpose is to discuss policy options available to the authorities and their implications in terms of trade‐offs between goals. We apply a multi‐objective programming model to the sardine and anchovy artisanal fisheries in central southern Chile. The results suggest that the regulatory system generates inefficient solutions for profit and employment maximisation goals. Moreover, the fleet structure of the artisanal organisations is central for the outcomes obtained by different policy simulations. To improve effort assignment, the authorities should seek to increase flexibility in the system.     

Two-stage adoption of different types of pollution prevention (P2) activities

Pollution prevention (P2) remains the key pollution reduction strategy in the US despite its limited success in improving environmental performance. To aid the targeting of policies to promote the types of P2 that achieve environmental goals, this study investigates the intricate nature of P2 adoption by (1) distinguishing among three types of P2: procedural changes, input and material changes and equipment and product changes, (2) disentangling the adoption decision into a binary and a count decision, and (3) analyzing benefit- and cost-related factors. Using a sample of facilities of S&P 500 firms, I employ NB hurdle models to analyze how facilities respond to these factors in making P2 adoption decisions. I find that facilities that have lower cost of adoption due to past P2 experience have higher likelihood of adoption and higher rates of adoption of all types of P2. However, those exposed to greater threat of enforcement action find limited scope for P2 in achieving environmental compliance objectives. Some regulatory threat variables even have a negative effect. Facilities also adopt P2 to enjoy market-related benefits: final good producers are more likely to adopt P2 that appeal to consumers (input and material changes), while intermediate good producers are more likely to adopt P2 that is valued by its supply chain (procedural changes). Community characteristics and other knowledge sources are not always positively associated with the likelihood of adoption nor with the rate of adoption.     

A Note on Distributive Equity and Social Efficiency

This note proposes a social welfare function (SWF) where most functions, such as the Benthamite or the Rawlsian functions, found in the literature can be considered particular cases. Moreover, the SWF propounded let us obtain compromises or balances between the welfare criteria of social efficiency and distributive equity. The level of compromise or balance is established with the help of a simple and operational parameter.     

A natural science approach to investigate cross-cultural managerial creativity

As the relative effectiveness of physical resources decreases toward parity with rivals due to their fungibility, the firm's marketplace position, established by managers with a particular set of inter-culturally attuned set of personal values, may be the key antecedent in creating competitive strength in the firm. The research question addressed is how creative are culturally diverse managers; are managers from certain countries more creative than adaptive?We tested hypotheses in a cross-cultural setting based on the survey responses of 1365 managers operating in eight countries located in four culturally diverse regions of the world.Our study shows that managers are both creative and adaptive but the mixture of creative and adaptive behaviour varies depending on region and country and even within countries. Furthermore, the results confirm that creativity among managers in some countries is similar but large differences also exist between countries.     

Public and private Investment in Mexico and Chile: An empirical test of the complementarity hypothesis

This paper addresses the important question of whether government investment spending, rather than overall public expenditures, exerts a positive effect on economic growth and productivity. Using time-series data for Chile and Mexico, it estimates a linear growth model that incorporates a number of relevant quantitative and qualitative variables for each country. The empirical results suggest that for both Chile and Mexico, increases in public and private investment spending have a positive and significant effect on the rate of growth in productivity. Moreover, the results for Mexico show that increases in government consumption expenditures have a negative effect on the rate of productivity growth, thus suggesting that the composition of government spending is at least as important as the growth rate of these expenditures in affecting economic growth. From a policy standpoint, these findings call into question the current trend among Latin American countries of indiscriminately reducing public spending because they fall disproportionally on capital expenditures—the type of spending needed to secure the long-term efficiency gains from market-oriented programs.     

Advantages of assembly lines in Sheltered Work Centres for Disabled. A case study

Current practices for the treatment of the physically and/or mentally handicapped prescribe meaningful job activity as a means towards both a more fulfilling life and societal integration. In many countries, these practices have facilitated the development of many Sheltered Work Centres for Disabled.In the case study presented, a reengineering process is done starting from individual workplaces where only certain workers were capable of assembling the entire product, and finishing with an assembly line implementation. It is revealed how the traditional division of work in single tasks, typical in assembly lines, becomes a perfect tool for making certain worker disabilities invisible, providing new jobs for disabled people; always taking into account certain special constraints that are analysed.     

HOW STOCK-SWAP MERGERS AFFECT SHAREHOLDER (AND BONDHOLDER) WEALTH: MORE EVIDENCE OF THE VALUE OF CORPORATE "FOCUS"

Alfred Chandler once described the U.S. conglomerate movement of the 1960s and '70s as an "historical aberration and a 'disaster." And the recent trend in corporate mergers and acquisitions away from "diversifying" acquisitions would seem to confirm Chandler's argument.
In what constitutes yet another piece of evidence in support of Chandler's argument, the authors of this article conducted a study of changes in debt and equity values in 260 stock-forstock mergers completed between 1963 and 1996. With a sample almost evenly divided between conglomerate and "related" mergers, the authors report significant net wealth gains for all securityholders as a group in "related" mergers, but generally insignificant net gains for securityholders in conglomerate mergers. Not surprisingly, target firm shareholders experienced net wealth gains in both kinds of acquisitions; but for acquiring company shareholders, there was a striking difference: economically and statistically significant gains for acquirers in related transactions, and significant losses for acquirers in conglomerate deals.
Perhaps the biggest surprise of the study, however, was that even the bondholders of acquirers in related mergers benefited more than bondholders in conglomerate deals. The result is surprising because, to the extent bondholders benefit from corporate diversification, one would expect the opposite result. That bondholders in related mergers experience larger wealth increases than those of conglomerate acquirers is just one more sign of the dramatic differences in total value created by the two kinds of mergers.     

Pedestrian traffic injuries in Mexico: A country update

Road traffic injuries in general and pedestrian injuries in particular are a major public health problem in Mexico, especially in large urban areas. Analysis of mortality and road crashes at the national level was done using routine data recorded on death certificates. Fatality rates for different age groups were estimated by region for the year 2000. These data were supplemented by a cross-sectional study of pedestrian injuries in Mexico City based on death certificates information for pedestrians who lived and died in Mexico City between 1994 and 1997. Participant observation of physical spaces where crashes occurred was carried out. The spaces were filmed and in-depth interviews of survivors conducted. Road traffic crashes were responsible for approximately 17,500 deaths in Mexico during 2000. The mean age of the victims was 37 years. Mexico lost an average of 30 years of productive life for each individual who died in a traffic crash – 525,000 years in 2000. An estimated 9500 (54.3%) of all fatalities were pedestrians, and for every pedestrian death there were 13 others who sustained nonfatal injuries requiring medical care. The overall crude mortality rate for pedestrian injuries in Mexico City was 7.14 per 100,000 (CI 6.85-7.42). A concentration of deaths was observed in 10 neighborhoods at specific types of street environments. The underlying factors included dangerous crossings and the absence or inadequacy of pedestrian bridges, as well as negative perceptions of road safety by pedestrians. In conclusion, this study demonstrates the importance of elucidating the underlying contextual determinants of pedestrian injuries.     

Trends and cycles of the internet evolution and worldwide impacts

In this paper we present a quantitative analysis of the evolution of some Internet and ICT evolution indicators. It focuses on the number of Internet hosts, the Internet penetration index, the ICT development index and the software/protocols development. In addition, we analyzed the series of most impacting events building up the Internet along the last fifty years. These analyses were carried out using the multi-logistic procedure recently proposed by the authors. Our results for hosts counting, penetration index and software/protocols development are compatible with the onset of some radical changes in the Internet technology to be currently underway and we forecast new growth rate peaks to occur by 2015. The software/protocols were found to having been powered by bursts of creativity with periods of the order of the Kuznets and Kondratiev economic cycles. Similar conclusions were drawn from the series of main events building up the Internet. Despite the clear signs of worldwide improvement in the ICT infrastructure and usage between 2002 and 2007 obtained from the ICT development index, its cross-correlation with the human development index (HDI) revealed the presence of a group of countries whose improvements in the operational ICT index are disconnected from their corresponding HDI improvements.     

Entry and Managerial Incentives: A Note

This note reinforces the results in a paper by Sen (International Journal of Industrial Organization, vol. 11, 1993, pp. 123–37). It is shown that his assumption that the incentive schemes in a two‐period model are the same for the two periods is not necessary for the results: only the long‐term nature of contracts with managers matters.