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Energy crisis around the world and implementation of so-called Package 3×20 where one of its demands aimed at increasing the share of renewable energy sources in overall balance, result in a significant increase in the interest in geothermal energy, and thus in the production of electricity from geothermal sources. Unfortunately, in Poland and the Czech Republic we are dealing mainly with low and...
This study presents a novel approach to the road traffic prediction using single multilayer perceptrons and their ensemble. Networks were trained on the basis of real-world data from the intelligent transportation system Wroclaw. This system is installed in one of the largest cities in Poland. First, a number of neural networks were created, each of which was concurrently able to predict the state...
Ground Penetrating Radar (GPR) investigations were conducted in order to characterize the reflection patterns and internal architecture of Vistula River point bars. The study area is situated in the south part of Warsaw (Central Poland), in the Nature Reserve Świderskie Islands, where fluvial deposits were well accessible due to an unusually low water level in the Vistula River. Ground Penetrating...
The objective of the study presented in this paper is to examine the effects of gender difference on the job satisfaction of information technology professionals in Poland, a transition economy. The necessary data is collected by a survey of 391 information technology professionals working in various regions of Poland. Several aspects of job satisfaction are investigated: satisfaction with pay, promotion,...
During the last decade there was made a great change in the Polish higher education system. As Poland joined the Bologna Process and began to take part in creation of the European Higher Education Area, there arose a need to redevelop the higher education system and to revise educational programs with an aim to adapt them both to changes in the philosophy of teaching as well as to the demands of social...
The paper covers an analysis of the data which come from the first module of a research project into the digitalization of cultural heritage in Poland. The authors of the research conducted qualitative and quantitative content analyses of three diverse kinds of empirical material: legislative documents (N=102), websites including repositories of digitalized objects of cultural heritage (N=455) and...
Over the last several years, Poland has created a new generation of innovators in emerging industries, such as biomedicine and e-Health, in order to compete globally. The country is now ranked third in the world in production of quality ICT specialists and regenerative medicine initiatives. In order to promote Poland's innovations globally, next generation infrastructure improvements are required...
The study area is situated near Kozlow village, about 70 km south-east from Warsaw (Central Poland), where relatively young unconsolidated fluvioglacial sediments are mined. The excavated sandy-gravel body is built up by architectural elements typical for esker deposits. Ground penetrating radar (GPR) surveys and sedimentological outcrop analyses are combined in order to characterize reflection patterns,...
The paper presents the impacts of new rules of the EU ETS on the fuel and technology mix of the Polish power sector. Those new rules were introduced in the third phase of ETS from 2013 to 2020. The most important one is introduction of full auctioning of CO2 allowances for electricity generators. For this study the technical - economic model of the Polish power sector has been developed with the use...
This paper presents the impact of tropospheric ash cloud distribution on the GPS signal through precipitable water vapor (PWV) measurements during the sequence of 2010 Eyjafjallajökull volcanic eruption at Eyjafjöll in Iceland. The second phase event was occurred from 14 April to 25 May 2010 across western and northern Europe. GPS and the surface meteorological data for the period from 1 April to...
The paper presents the neural network approach to the accurate forecasting of the daily average concentration of PM10. Few neural predictors are applied: the multilayer perceptron, radial basis function, Elman network and support vector machine. They are used for prediction either in direct application or in combination with wavelet decomposition, forming many individual prediction results that will...
The laboratory measurements of the diffuse spectral reflectance of 212 soil samples, representing many various taxonomic units, collected throughout the area of arable lands in Poland, were conducted to investigate the relationship between the soil reflectance and their selected properties. It was found that among various tested transformations the first derivative of the soil reflectance was the...
A new procedure for combined validation of learning models - developed for specifically uncertain data - is briefly described; it relies on a combination of resubstitution with the modified learn-and-test paradigm, called by us the queue validation. In the initial experiment the elaborated procedure was checked on doubtful (presumably distorted by creative accounting) data, related to small and medium...
The paper is addressed to studies of earth electrodes' corrosion occurring in different climatic conditions based on comparative results from Poland and Jiangxi province in south of China. The Polish company Galmar-manufacturer of copper coated earth electrodes and conductors started in Poland in 2003 the long-term project of field corrosion tests of earth rods made from different materials. The results...
The main objective of this paper is to extract, formulate and analyse the general rules and principles that govern the evolution of key information technologies (IT), the information society (IS), as well as e and the economy using a holistic approach. In order to elaborate a model suitable for forecasts and recommendations we have defined eight to ten major elements of an IS that characterise its...
This paper reports and analyses the decisions taken by companies in managing their logistics and supply chain activities during the recent economic recession. This research investigated the perceptions of logistics and supply chain managers, and other logistics personnel, of the impact of the economic downturn on their organisations' management decisions. It has sought to understand the specific actions...
The independent Operator of Measurements (IOM) is a new energy market actor that will implement a remote access to the metering data and stores, as well as aggregating and delivering them in real time to all market participants as an independent service-placed "above the market" enterprise. In that sense IOM, with an adequate infrastructure of ICT has become a virtual company with real effect...
The aim of the study is the analysis of water quality changes in the Upper Vistula. The issue of water quality is important to Poland, where water resources are poorer than in many countries of the European Union. The study spans the period before and after political transformation in Poland, which significantly altered its economy. Changes in indices of water pollution were investigated for 4 monitoring...
The evolution of Internet within the last years and the continuous advances in electronic commerce and communication provide exciting opportunities to implement a powerful framework of resources, tools and applications that revolutionize the way in which healthcare institutions interact with their patients, as well as deliver and manage medical services. Internet-based healthcare is the application...
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