Commodity and energy prices have exhibited an unprecedented increase between October 2006 and July 2008, only to fall sharply during the last months of 2008. Many explanations have been offered to this phenomenon, including steadily increasing demand from China and India, large mandated...

For seventy years ecologists have debated to what extent competition affects the composition of ecological communities. At one extreme, species have been proposed to assemble independently of each other, while at the other extreme, competition and other interspecific interactions have been...

A Bayes net has qualitative and quantitative aspects: The qualitative aspect is its graphical structure that corresponds to correlations among the variables in the Bayes net. The quantitative aspects are the net parameters. This paper develops a hybrid criterion for learning Bayes net structures...

As disease spreads through a population, scientists want to know who gets sick, how bestto prevent a large outbreak, and if an epidemic may occur. For many years, mathematicians usedmodels to approximate answers to these questions; however, these older models used simplifyingassumptions about...

This report is the result of a study undertaken by the Centre of Excellence Science Seafood & Health (CESSH) and the Department of Agriculture and Food Western Australia (DAFWA) as part of the Seafood CRC Project improving the Supply chain for selected WA Seafood Products The primary objectives...

We present a model to investigate the competitive implications ofelectronic secondary markets that promote concurrent selling of new andused goods on a supply chain. In secondary markets where supplierscannot directly utilize used goods for practicing intertemporal pricediscrimination and where...

The paper introduces new dimensions of Information Systems evaluation. Sustainability issues have increasing importance and their influence is compared with the Internet revolution. Customers, policymakers and business partners increasingly require the monitoring and reporting of the impact of...

This paper presents results of a pilot study completed as part of the BestLog (Best Practices in Logistics) project. BestLog (www.bestlog.org) is a research project initiated by the European Commission (EC) and financed from the 6th Framework Programme. One of the project goals is to identify...

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