Wyniki wyszukiwania - BazTech

1

Sustainable innovation as an important factor of firm development

Lorek P.

Ekonomia i Środowisko

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2018

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nr 1

32--40

EN

The environmental and social aspects are becoming increasingly important for enterprises. A very important matter is also achieving the high level of innovation for gaining competitive advantage. The way to reconcile these aspirations seems to be a development path called sustainable innovation. The aim of the article is to identify the concept of sustainable innovation in the context of modern enterprises and to propose the method of supporting it using an algorithmic approach.

2

Modern software tools in sustainable development programming

Lorek E., Lorek P.

Ekonomia i Środowisko

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2017

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nr 1

72--80

EN

The article attempts to analyse existing approaches to management support of sustainable development particularly with use of tools based on neural networks. The article uses the analysis of literature to exemplify the implementation of computer-aided regional governance in the context of implementation of the principles of sustainable development. The added value is the presentation of examples of the usage of neural networks for programming of sustainable development at the regional level.

3

Strong stationary duality for Möbius monotone Markov chains : examples

Lorek P., Szekli R.

Probability and Mathematical Statistics

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2016

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Vol. 36, Fasc. 1

75--97

EN

We construct strong stationary dual chains for nonsymmetric random walks on square lattice, for random walks on hypercube and for some Ising models on the circle. The strong stationary dual chains are all sharp and have the same state space as original chains.We use Möbius monotonicity of these chains with respect to some natural orderings of the corresponding state spaces. This method provides an alternative way to study mixing times for studied models.

4

Specyficzne cechy europejskich giełd energii – statystyczna analiza cen spot w ujęciu długoterminowym

Lorek P.

Polityka Energetyczna

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2015

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T. 18, z. 2

29--41

PL

Giełdowy rynek energii elektrycznej nabiera coraz większego znaczenia jako płaszczyzna obrotu energią elektryczną. W niektórych krajach 80% energii elektrycznej jest sprzedawane na tym rynku. W wielu państwach udział tego rynku w całkowitym wolumenie sprzedawanej energii systematycznie rośnie. W opisanej sytuacji ważne wydaje się pozyskanie jak największej ilości informacji dotyczących cech charakterystycznych rynków giełdowych energii elektrycznej. W artykule zostanie podjęta próba ustalenia charakterystycznych cech statystycznych szeregów cen spot energii elektrycznej. W tym celu zostały użyte takie metody jak: analiza widmowa, badanie rozkładu statystycznego, wyznaczanie autokorelacji cząstkowych oraz wykresy rekurencyjne. Dane dotyczące wymienionych analiz odnoszą się do skandynawskiej giełdy Nord Pool, austriackiej giełdy Energy Exchange Austria (EXAA), hiszpańskiej OMI-Polo Español (OMIE) oraz polskiej Towarowej Giełdy Energii (TGE).

EN

Acceleration of markets globalization, deregulation and liberalisation of business activity of enterprises, decentralisation of the management structures lead to increased competition on the market, where the quality of service and price of products is extremely important. Availability and the price of energy dtermines in a large scale the functioning and competitive position of the economy. The energy markets in european countries are rapidly evolving. In some countries 80% of energy volume is sold via energy exchanges. The energy exchanges are not used only by manufacturers and distributors, but also the distribution companies and wholesale customers. The importance of this form of market organisation is steadily growing. The development of European energy system has now reached the status of regional integration. This trend is part of the current European power sector development strategy that aim to create a single pan-European system. In this situation, it seems important to acquire as much information about the characteristics of the energy exchanges as possible. The article attempts to identify the characteristics of following energy exchanges: Nord Pool, Energy Exchange Austria, OMI-Polo Español and Towarowa Giełda Energii. Survey covers electricity prices from the period 1.01.2007–31.12.2013. In order to determine the characteristics of each of the exchanges, the following experiments were conducted: time plots analysis, the study of statistical distributions, spectral analysis, partial autocorrelation test, analysis and interpretation of recurrence plots. Collected in this way the results of the experiments are used to determine the homogeneous or heterogeneous nature of the examined European energy exchanges. The article is summarized by conclusions of the study.