Integrated bio-economic models as tools to support land-use decision making: a review of potential and limitations

Bio-economic modelling has become a useful tool for anticipating the outcomes of policies and technologies before their implementation. Advances in mathematical programming have made it possible to build more comprehensive models. In an overview of recent studies about bio-economic models applied to land-use problems in agriculture and forestry, we evaluated how aspects such as uncertainty, multiple objective functions, system dynamics and time have been incorporated into models. We found that single objective models were more frequently applied at the farm level, while multiple objective modelling has been applied to meet concerns at the landscape level. Among the objectives, social aspects are seldom represented in all models, when being compared to economic and environmental aspects. The integration of uncertainty is occasionally a topic, while stochastic approaches are more frequently applied than non-stochastic robust methods. Most multiple-objective models do not integrate uncertainty or sequential decision making. Static approaches continue to be more recurrent than truly dynamic models. Even though integrating multiple aspects may enhance our understanding of a system; it involves a tradeoff between complexity and robustness of the results obtained. Land-use models have to address this balance between complexity and robustness in order to evolve towards robust multiple-objective spatial optimization as a prerequisite to achieve sustainability goals.     

Cognition,Social Impulse,and the Principle of Adaptation: Insights into the Peirce-Veblen Connection

This article seeks to offer insights into the connections between Charles S. Peirce and Thorstein B. Veblen regarding their understanding of the logic of scientific thought and cognition. In this sense, this work explores how both Veblen and Peirce dismissed the Cartesian notion of unmediated cognition and how they sought to depict cognition as a process. Furthermore, this article presents Peirce’s concept of “social impulse” and Veblen’s “principle of adaptation” as complementary perspectives on science and cognition that have strong evolutionary content.     

Original Institutional Economics and Political Anthropology: Reflections on the Nature of Coercive Power and Vested Interests in the Works of Thorstein Veblen and Pierre Clastres

Our inquiry advances a comparison of the anthropological content of Thorstein Veblen’s evolutionary perspective with the foundations of the political anthropology drawn from selected works of Pierre Clastres. We seek to establish that what can be referred to as a clastrean reference can simultaneously offer new perspectives on institutionalism, while maintaining a radical and emancipatory understanding of Veblen’s writings. In this sense, we seek to reconsider and reevaluate the role of economic surplus drawn from Veblen’s anthropology, while also offering a general and critical perspective for understanding the emergence of coercive power within societies.     

Is the Ethical Culture of the Organization Associated with Sickness Absence? A Multilevel Analysis in a Public Sector Organization

The main aim of the present study was to examine whether an ethical organizational culture is associated with sickness absence in a Finnish public sector organization at both the individual (within-level) and work unit (between-level) levels. The underlying assumption was that employees working for organizations that are characterized by a strong ethical organizational culture report less sickness absence. The sample consisted of 2192 employees from one public sector city organization that included 246 different work units. Ethical organizational culture was measured with the Corporate Ethical Virtues scale covering eight sub-dimensions. Sickness absence was inquired by asking the participants to report how many days they had been absent from work because of their own sickness over the past year. Multilevel structural equation modelling showed that, at the individual level, perceptions of a strong ethical organizational culture were associated with less sickness absences after controlling for the background factors. This link was not found at the work-unit level. The findings indicate that an ethical organizational culture plays a significant role in enhancing employee well-being measured as sickness absence. It seems that especially supervisor’s ethical role modeling and possibilities to discuss about ethical issues are important factors in preventing sickness absence in the organizations.     

“SWEEPING THE HEAVENS FOR A COMET”: WOMEN,THE LANGUAGE OF POLITICAL ECONOMY,AND HIGHER EDUCATION IN THE US

Abstract

The importance of increased levels of education in improving the status of women throughout the world is well established. Higher levels of education are associated with lower birth rates, higher incomes, and greater autonomy for women. Yet, women's struggle to have a voice in higher education has been fraught with difficulties in the US and worldwide, particularly in overcoming widely held perceptions that limit their entrance into certain academic fields, tenured positions, and elite universities. This essay examines the role political economy has played in providing narratives that rationalize women's limited participation in higher education. By examining the representation of women in the academic culture of the nineteenth- and twentieth-century US, we can perhaps better understand women's struggle to obtain an authoritative voice in higher education worldwide.     

Social Interaction Effects in Disability Pension Participation: Evidence from Plant Downsizing*

We estimate the magnitude of social interaction effects in disability pension participation among older workers in Norway. The problem of omitted variable bias is addressed using the exposure of an individual's neighbors to plant‐downsizing events as an instrument for the disability entry rate among the individual's previously employed neighbors. Our instrumental variable (IV) estimates suggest that an increase of one percentage point in the participation rate of previously employed neighbors increased the subsequent four‐year entry rate of older workers by about 0.4 percentage points. Numerous robustness and specification tests appear to support the validity of the identifying assumption in our IV strategy.     

EXPLICIT SOLUTIONS OF CONSUMPTION-INVESTMENT PROBLEMS IN FINANCIAL MARKETS WITH REGIME SWITCHING

We consider a consumption and investment problem where the market presents different regimes. An investor taking decisions continuously in time selects a consumption–investment policy to maximize his expected total discounted utility of consumption. The market coefficients and the investor's utility of consumption are dependent on the regime of the financial market, which is modeled by an observable finite-state continuous-time Markov chain. We obtain explicit optimal consumption and investment policies for specific HARA utility functions. We show that the optimal policy depends on the regime. We also make an economic analysis of the solutions, and show that for every investor the optimal proportion to allocate in the risky asset is greater in a "bull market" than in a "bear market." This behavior is not affected by the investor's risk preferences. On the other hand, the optimal consumption to wealth ratio depends not only on the regime, but also on the investor's risk tolerance: high risk-averse investors will consume relatively more in a "bull market" than in a "bear market," and the opposite is true for low risk-averse investors.     

Book review

Built by Japan: Competitive Straegies of the Japanese Construction Industry, Fumio Hasegawa & Shimizu Group FS New York, John Wiley & amp; Sons, 1988, 204 pp., US$25.00.

Technological Change at Work Ian McLouglin & Jon Clark Milton Keynes, Open University Press, 1988, 202 pp., Pb £9.00, Hb £25.00.

Enterprising Innovation: An Alternative Approach Veronica Mole & Dave Elliott London, Frances Pinter, 1987, pp. 180.

Flexible Automation: The Global Diffusion of New Technology in the Engineering Industry Charles Edquist Jacobsson Oxford, Basil Blackwell, 1988, Hb £35.00.

Expert Systems: Strategic Implications and Applications A. Beerel Chichester, Ellis Horwood Ltd, 1988, 173 pp., £22.50.