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The development of the Polish telecommunications administration in the years 1989/90 to 2003 is marked by the processes of liberalisation and privatisation the telecommunications sector underwent during that period. The gradual liberalisation of the Polish telecommunications sector started as early as 1992. In the beginning, national strategies were pursued. The most important of these was the creation of a bipolar market structure in the local area networks. In the second half of the 1990ies the approaching EU membership accelerated the process of liberalisation and consequently the development of a framework of regulations. EU standards are more directed towards setting out a legal framework for regulation than prescribing concrete details of administrative organisation. Nevertheless, the independent regulatory agencies typical for Western Europe served as a model for the introduction of a new regulatory body responsible for the telecommunications sector in Poland. The growing influence of EU legislation changed telecommunications policy as well as administrative practices. There has been a shift of responsibilities from the ministry to the regulatory agency, but the question remains, if the agency gained enough power to fulfil its regulatory function. In the following the legislative framework created by the EU in telecommunications policy will be described and the model of independent regulatory agencies, as it is typical for most EU countries, will be introduced. Some categories for the analysis of the Polish regulatory system will be deduced from the discussion on the regulations of telecommunication in the established EU-Nations (see Böllhoff 2002 and 2003, Thatcher 2002a and 2002b, Thatcher/Stone Sweet 2002). Subsequently the basic features of Polish telecommunication policies in the 1990ies and its effects on the telecommunications sector will be outlined. In the third chapter the development of organisational structures on the ministerial level and within the regulatory agency will be examined. In the forth chapter I will look at the distribution of power and the coordination of the various authorities responsible for telecommunication regulations. The focus of this chapter is on the Polish regulatory agency and its relationships with the ministry, with the anti-monopoly office and with the Broadcasting and Television Council. In a conclusion, the main findings will be summed up.
The differential approach is based on the determination of dimensionless differential slope, for instance, of current-voltage characteristics (IVC), I=f(V). This slope (a) is given by formula alpha=d(lgI)/d(lgV). With such definition the ranges of constancy of the a(V) dependency correspond to the part of IVC characterized by the power behaviour (I similar to V-alpha). The differential slope of alpha(V) dependency gamma = d(lg alpha)/dlgV determines the exponent behaviour of curve (I similar to exp {eV(y)/kT}). Processing by the differential approach of the investigated theoretical or experimental characteristics permits us to determine the peculiarity of charge flow mechanisms, temperature behaviour of conductivity, etc. The theoretical base and some applications of differential approach to the investigation of the current-voltage, temperature and degradation characteristics of the polyaniline and poly(p- phenilenevinilene) based structures have been shown. (c) 2005 Elsevier B.V. All rights reserved