This paper presents a two-sector endogenous growth model where public spending {which is endogenous and productive{ may generate equilibrium indeterminacy. Under certain mild conditions, there exists a continuum of expectations-driven equilibrium paths approaching a common balanced growth path. We show that the welfare-maximizing equilibrium path is associated with a labor supply as large as po...

In Italy, the transformation of government procurement began in 2000 with the model developed by Consip SpA (a public company owned by the Ministry of Economy and Finance) for all public agencies across the nation. The paper is aimed to reconstruct the path taken by the public procurement reform in Italy gradually evolving from a supply-driven to a demand-driven approach. The Italian procuremen...

Much debate and subsequent confusion have recently been generated regarding the economic importance of the longline fisheries for tuna and swordfish in Hawaii. Depending on the methodology employed, the measures of the economic importance of these fisheries to Hawaii can vary significantly. This paper attempts to provide an assessment of the alternative measures and their implications for fishe...

A study, based on product related scenarios, on power supply integrity issues is conducted. The effectiveness of specific design parameters depends strongly on the expected loading of the power distribution grid. Therefore, the commonly used approach to only use an even current distribution can lead to non-optimal power grid designs. For power grid optimization, a problem reduction from quadrat...

Throughout product lifecycle, the definition of product data is confronted to the diversity of the business activities and influenced by their specific information systems. This paper is related to the analysis of technical and functional product data exchange solutions throughout product lifecycle. In such context, the communication between partners is ensured by setting agreements, methodolog...

The continuing population growth, decreasing availability of productive land due to land conversion, transport emissions of food and other factors will create significant challenges for supplying future food demand and sustainability. The United Nations Development Programme (UNDP) identified that by 2050 there will be an additional 2.7 billion people in the world (UNDP, 2009). Two thirds of th...

S. Kapoor B. Binney S. Buckley H. Chang T. Chao M. Ettl E. N. Luddy R. K. Ravi J. Yang The results of an effort to build a sense-and-respond solution for a supply chain by using a model-driven development framework are described in this paper. One of the components of the framework is the IBM Research-developed model-driven business-transformation (MDBT) toolkit, a set of formal models, methods...