849 resultados para alternative economic networks
Resumo:
The focus of my paper is the presentation of some thoughts on overcoming economic stagnation, with reference to the case of Mexico. In Section 2, I will describe the reasons why the policies of financial opening based on the Washington Consensus create endogenous tendencies toward economic stagnation and overvaluation of currencies. Section 3 offers a concise outline of a possible alternative development project for Mexico. Section 4 presents some proposals regarding monetary, foreign exchange, and fiscal policy oriented toward reviving economic growth. Finally, in Section 5, I present some conclusions.
Resumo:
This paper proposes an alternative codification to solve the service restoration in electric power distribution networks using a SPEA2 multiobjective evolutionary algorithm, assuming the minimization of both the load not supplied and the number of switching operations involved in the restoration plan. Constrains as the line, power source and voltage drop limits in order to avoid the activation of protective devices are all included in the proposed algorithm. Experimental results have shown the convenience on considering these new representations in the sense of feasibility maintenance and also in the sense of better approximation to the Pareto set. ©2009 IEEE.
Resumo:
Includes bibliography
Resumo:
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Resumo:
Fraud is a global problem that has required more attention due to an accentuated expansion of modern technology and communication. When statistical techniques are used to detect fraud, whether a fraud detection model is accurate enough in order to provide correct classification of the case as a fraudulent or legitimate is a critical factor. In this context, the concept of bootstrap aggregating (bagging) arises. The basic idea is to generate multiple classifiers by obtaining the predicted values from the adjusted models to several replicated datasets and then combining them into a single predictive classification in order to improve the classification accuracy. In this paper, for the first time, we aim to present a pioneer study of the performance of the discrete and continuous k-dependence probabilistic networks within the context of bagging predictors classification. Via a large simulation study and various real datasets, we discovered that the probabilistic networks are a strong modeling option with high predictive capacity and with a high increment using the bagging procedure when compared to traditional techniques. (C) 2012 Elsevier Ltd. All rights reserved.
Resumo:
The group presents an analysis of the development of the Czech society and economy during the 1990s. They believe that the Czech neo-liberal strategy of transformation led to a partial and uneven modernisation and that this strategy is unable to provide a firm basis for a complex process of modernisation. The increasing developmental problems encountered during 1996-1999 can be seen as empirical evidence of the inadequacy of the neo-liberal transformation strategy. These problems are connected to institutional shortcomings due to the excessive speed of privatisation, its form with certain important Czech innovations (particularly the voucher method and an attempt to resuscitate the Czech national capital) and with the overlooking of the importance of the legal framework and its enforcement. The overly hasty privatisation has created a type of 'recombinant property' which lacks the economic order necessary to stimulate efficiency in an atmosphere of prevailing social justice. A second reason for the present difficulties is the long-term lag behind the civilisation and cultural standards typical of the advanced European countries. The first steps of the Czech transformation concentrated mainly on changes in the institutions important for the distribution of power and wealth and largely neglected the necessity of deep-reaching modernisation of Czech society and the economy. The neo-liberal strategy created conditions conducive to predatory and speculative behaviour at the expense of creative behaviour. Inherited principles of egalitarianism combined with undeserved economic privileges survived and were reinforced by important new developments in the same direction. This situation hinders the assertion of meritocratic motivations. The group advocates the development and implementation of a complex strategy of modernisation based on deliberate reforms, institutional changes and restructuring on the basis of strategic planning, and structural and regional policies which stress the role of cultivation of the institutional order and of the most important factors of economic growth and development.
Resumo:
Here, by the example of the transfer of cultivated plants in the context of the correspondence networks of Albrecht von Haller and the Economic Society, a multi-level network analysis is suggested. By a multi-level procedure, the chronological dynamics, the social structure, the spatial distribution and the functional networking are analyzed one after the other. These four levels of network analysis do not compete with each other but are mutually supporting. This aims at a deeper understanding of how these networks contributed to an international transfer of knowledge in the 18th century.
Resumo:
The Asia-Pacific Region has enjoyed remarkable economic growth in the last three decades. This rapid economic growth can be partially attributed to the global spread of production networks, which has brought about major changes in spatial interdependence among economies within the region. By applying an Input-Output based spatial decomposition technique to the Asian International Input-Output Tables for 1985 and 2000, this paper not only analyzes the intrinsic mechanism of spatial economic interdependence, but also shows how value added, employment and CO2 emissions induced are distributed within the international production networks.
Resumo:
Firms that are expanding their cross-border activities, such as vertical specialization trade, outsourcing, and fragmentation productions, have brought dramatic changes to the global economy during the last two decades. In an attempt to understand the evolution of the interaction among countries or country groups, many trade-statistics-based indicators have been developed. However, most of these statistics focus on showing the direct trade-specific-relationship among countries, rather than considering the roles that intercountry and interindustrial production networks play in a global economy. This paper uses the concepts of trade in value added as measured by the input–output tables of OECD and IDE-JETRO to provide alternative indicators that show the evolution of regional economic integration and global value chains for more than 50 economies. In addition, this paper provides thoughts on how to evaluate comparative advantages on the basis of value added using an international input–output model.