Data Mining Decision Trees in Economy

Data Mining represents the extraction previously unknown, and potentially useful information from data. Using Data Mining Decision Trees techniques our investigation tries to illustrate how to extract meaningful socio-economical knowledge from large data sets. Our tests find 5 attributes selection measures that perform more accurate then the best performance of the 17 algorithms presented in literature.Data Mining, Decision Trees, classification error rate

THE ECO-ECONOMICAL PRINCIPLES – ESSENTIAL ELEMENTS IN THE DECISIONAL PROCESS FOR THE TRANSFORMATION OF THE AGRO-TOURIST PENSION INTO AN ECO-TOURIST PENSION

The development of the output during the last decades and the same time with growing population namely energy, raw material demands for industry and food have highlighted the conflict between man and nature, between the processes of social-economic development and natural resources with troubling consequences on the ecologic balance of the planet. If the models were taken into consideration before the beginning of the present economic-financial global crisis in present we can say that we match the second model: stopping the rhythm of economic development, even if the best model should represent the sustainable development. Of course that elaborating a new development model of the human society means changing the old concepts, particularly the economic ones and aligning them to the specific of the environment management and the conditions of the actual crisis. In this respect, we analyzed to of the basic components of the sustainable development concept: on the one hand, the economy and on the other environmental protection. These components are also starting points for the eco-economy domain, which has to elaborate mechanisms, criteria, instruments, models that can be taken in consideration in an economic-ecologic vision of development of the society.eco-economy, agro-tourist pension, eco-tourist pension, sustainable development, tourism

ASPECTS REGARDING THE DIFICULT PROCESS OF BUILDING A ROMANIAN TOURISM BRAND

The image we have about a country has a huge impact on how we view it as a tourist destination, a place to invest in, or a place to buy the brands we love from. In today's globalised market the battle for tourism, exports, and inward investment is extremely intense as brands have become more and more the vehicles for communicating national identity.brand, tourism brand, image, country image, tourism.

L'AUGMENTATION DE LA RESPONSABILITÉ SOCIALE DES ENTREPRISES DE TOURISME DANS LE CONTEXTE DE LA CRISE ECONOMIQUE MONDIALE

Corporate Social Responsibility has become a key concept in modern corporate culture. This paper presents the results of an exclusive consumer survey on the willingness to pay for CSR, as well as best practices from other industries and precise suggestions for the implementation and monitoring of CSR in the travel industry. The concept of CSR was introduced in Germany in the mid-1990s. Since then, the idea has prolifically developed in all directions and enjoyed a rapid rise in popularity. Measures to improve the situation at the holiday destination were also strongly supported. As regards the services on offer, guests turned their attention mainly to security in hotels, information for guests about travel safety as well as monitoring the security situation in the country of travel.responsabilité sociale des entreprises, responsabilité sociale du secteur touristique, la crise économique

THE WATER SUPPLY OF THE LOCALITIES IN THE ILIŞUA DRAINAGE BASIN

The water supply of the localities in the Ilişua drainage basin. The way in which the water is supplied to a locality represents a relevant indicator in assessing the quality of life and the economic development. The existence of a well developed water supply system is all the more necessary as the spatial-temporal distribution of the rainfall undergoes an enhancement of variation together with the increase of water requirement.The 27 localities located in the drainage basin, with a population of more than 13,000 inhabitants, engaged mostly in primary activities need a water supply system with a quality source and a sufficient flow to induce an actual immunity in the context of present climate changes. In order to achieve this goal, one has to consider calculating the water requirement, analyzing the territory natural component in order to make possible the identification of the water supply sources and of the water uses territorial distribution

Transylvania – Romanian Tourism Micro-destination

Although nowadays there are many controversies regarding the three regionalization dimensions (the positive-scientific regionalization, the symbolic- informal regionalization and the normativeformal regionalization) in terms of the modification of the third, due to the norms and principles of the accedence to the European Union and due to the access to the structural funds, the symbolic-informal regionalization (“produced in the collective mental of the individual and group selfidentification, of current practices and that includes the sphere of the culture (…) being not only a factor, but also a result of the social construction” (Benedict, 2000, p. 47)) remains in the same time a supporting element in the development of the regional brand. Thus, the region of Transylvania, in accordance with the results of the conducted research, entirely corresponds with the definition that Passy (2001, p. 16) assigned to the region, namely “on the one hand, a social construction – created by economic, politic, cultural and administrative discourses and practices – but, on the other hand, it might become a power center”

In situ synchrotron radiation monitoring of phase transitions during microwave heating of Al-Cu-Fe alloys

The effect of rapid microwave heating has so far been evaluated mainly by comparing the state of materials before and after microwave exposure. Yet, further progress critically depends on the ability to follow the evolution of materials during ultrafast heating in real time. We describe the first in situ time-resolved monitoring of solid-state phase transitions during microwave heating of metallic powders using wide-angle synchrotron radiation diffraction. Single-phase Al-Cu-Fe quasicrystal powders were obtained by microwave heating of nanocrystalline alloy precursors at 650 °C in <20