93,126 research outputs found

    Consciosusness in Cognitive Architectures. A Principled Analysis of RCS, Soar and ACT-R

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    This report analyses the aplicability of the principles of consciousness developed in the ASys project to three of the most relevant cognitive architectures. This is done in relation to their aplicability to build integrated control systems and studying their support for general mechanisms of real-time consciousness.\ud To analyse these architectures the ASys Framework is employed. This is a conceptual framework based on an extension for cognitive autonomous systems of the General Systems Theory (GST).\ud A general qualitative evaluation criteria for cognitive architectures is established based upon: a) requirements for a cognitive architecture, b) the theoretical framework based on the GST and c) core design principles for integrated cognitive conscious control systems

    Cost-Benefit Analysis of the protection of Malleefowl in the Lachlan Catchment

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    A cost-benefit analysis (CBA) of an investment in the protection of malleefowl and associated native vegetation in the Lachlan Catchment’s central-west yielded a benefit-cost ratio of 1.4. The CBA is based on project expenditures over the past four years coupled with benefit estimates from a recent Choice Modelling study in the Lachlan Catchment. The project targets the protection of malleefowl on private land which has not yet been surveyed but where the species is known to be present. The CBA is subject to significant uncertainty due to a lack of available data. Nonetheless, sensitivity analysis indicates that the BCR is consistently larger than unity, if marginal in some cases. This suggests that the project is a worthwhile investment at this early stage. Furthermore, greater gains may be achieved by addressing the numerous threats facing the species and its habitat. The increased cost of such an investment may be more than offset by the gains in benefits due to relatively conservative assumptions associated with the benefit calculations in the BCA.Cost-benefit analysis, Benefit-cost ratio, Choice modelling, Malleefowl, Lachlan Catchment, Environmental Economics and Policy,

    On sustainability: an economic approach

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    \u27Sustainability\u27 is invoked as a desirable objective in a range of contexts, yet its meaning is not always clear. Sustainability can imply vastly different policy responses depending on interpretation, particularly in relation to the degree to which environmental and other resources should be consumed over time. Using an economic framework, this paper illustrates possible interpretations of sustainability and what they imply for policy analysis

    CURRENT ISSUES AFFECTING TRADE AND TRADE POLICY: AN ANNOTATED LITERATURE REVIEW

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    This review provides a base of literature describing current issues and research on the impacts of lobalization and the industrialization of agriculture and recent approaches to analyze and model agricultural trade and trade policies. Three key factors of the survey are differentiated goods, global economic integration and international supply chain linkages. The review covers 182 publications, which are presented alphabetically by author with a brief annotation describing how it relates to the above criteria. The articles are also indexed by keyword. A brief summary highlights the documented literature and includes a series of issues for future discussion and research.International Relations/Trade,

    On the psychological basis of economics and social psychology

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    Neoclassical economic theory, with its roots (partly) in the marginal revolution of the Nineteenth Century, has been the dominant paradigm for economic thought throughout most of the Twentieth Century?up to the present day. However, for the past several decades economists have been deeply divided on the validity of neoclassical theory, thereby rendering the discipline less effective than it could be in helping to understand socio-economic change. A mathematical synthesis of prominent contributions to psychological and economic theory since the mid-Nineteenth Century has emerged in recent years, resulting in a substantive formulation of individual behavior. Rather than incorrectly assign utility directly to consumables thereby excluding time as an essential parameter, as is the case in mainstream economic theory, this new methodology assigns instantaneous utility exclusively to the expected (intertemporal) process-of-knowing attending mental/physical activity. The result is a canonical theory that represents the expectational and?barring surprise?actual time-dependent interaction of the individual with his environment, including other agents. The paper will provide an overview of basic and applied theory, and its relation to the mainstream and Austrian schools. Applications at the microeconomic level, including the psychological contribution to the real interest rate and the essential relationship between capital and labor, will be addressed. Also discussed will be the initial perceptions yielded by this new mathematical theory on the social psychology of group behavior, including the social-identity approach. New results will be provided on capital function, the etiology of interest rates, the nature of value, the determination of market prices, and other topics of interest.

    Information Aggregation in a Catastrophe Futures Markets

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    We experimentally examine a reinsurance market in which participants have differing information regarding the probability distribution over losses. The key question is whether the market equilibrium reflects traders maximizing value with respect to their different priors, or whether the equilibrium is one based on a common belief incorporating all participants’ information. When assuming subjects are expected value maximizers, we reject both full information aggregation and no information aggregation equilibria. We discover, as in past individual choice insurance experiments, that buyers under-assess the probabilities of large loss states, or alternatively, subjects assign larger utility values to losses than to comparable gains. After accounting for these decision theoretic concerns, the non-aggregation of information hypothesis explains the data better than full information aggregation.

    Rationality of Belief Or: Why Savage's axioms are neither necessary nor sufficient for rationality, Second Version

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    Economic theory reduces the concept of rationality to internal consistency. The practice of economics, however, distinguishes between rational and irrational beliefs. There is therefore an interest in a theory of rational beliefs, and of the process by which beliefs are generated and justified. We argue that the Bayesian approach is unsatisfactory for this purpose, for several reasons. First, the Bayesian approach begins with a prior, and models only a very limited form of learning, namely, Bayesian updating. Thus, it is inherently incapable of describing the formation of prior beliefs. Second, there are many situations in which there is not sufficient information for an individual to generate a Bayesian prior. It follows that the Bayesian approach is neither sufficient not necessary for the rationality of beliefs.Decision making, Bayesian, Behavioral Economics

    Mark versus Luke? Appropriate Methods for the Evaluation of Public Health Interventions

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    The purpose of this paper is to demonstrate that a social decision making approach to evaluation can be generalised to interventions such as public health and national policies which have multiple objectives and impact on multiple constraints within and beyond the health sector. We demonstrate that a mathematical programming solution to this problem is possible, but the information requirements make it impractical. Instead we propose a simple compensation test for interventions with multiple and cross-sectoral effects. However, rather than compensation based on individual preferences, it can be based on the net benefits falling on different sectors. The valuation of outcomes is based on the shadow prices of the existing budget constraints, which are implicit in existing public expenditure and its allocation across different sectors. A ‘welfarist’ societal perspective is not sufficient; rather, a multiple perspective evaluation which accounts for costs and effects falling on each sector is required.cost-effectiveness analysis, decision rules, public health
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