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Warsaw, Poland

Garbicz M.,Szkole Glownej Handlowej | Sokol H.,Szkola Glowna Handlowa
Rynek Energii | Year: 2013

Taking into account both American and European natural gas prices and LNG transportation costs, US shale gas could be competitive on European market. Nevertheless, supply of US gas for export to Europe, according to latest forecasts, will be relatively small in next 10-15 years. Therefore, impact of American shale gas on European gas market will be limited. It is likely, that Polish shale gas exploitation will turn to be not profitable. In these circumstances shale gas will exert only moderate influence on diversification of gas supplies to Poland in the near future.

Ekes M.,Szkola Glowna Handlowa
Control and Cybernetics | Year: 2011

We examine two approaches to the problem of measuring the voting power of individuals in a voting body with an a priori coalition structure by means of the Shapley-Shubik index. In order to analyze this question we apply games with a priori unions and composite games. We compare these two approaches basing on voting games with 100 voters and different coalition structures and present our conclusions.

Background: The aim of this work was to elaborate the Factors Enhancing Teachers' Occupational Wellbeing Scale for use with teachers from health promoting schools and to provide its psychometric analysis. Material and Methods: The sample consisted of 270 teachers from the health promoting schools. The instrument consisted of 45 statements divided into five subscales (working conditions, teachers' community, students and parents' community, organization and workload, professional competences), which are measured from two points of view: assessment of a current situation (a 5-point rating scale from 5 (strongly yes) to 1 (strongly no)) and assessment of needs for the improvement (a 5-point rating scale from 1 (no need) do 5 (very strong need)). Psychometric analysis included the assessment of: reliability (using Cronbach-α coefficient), theoretical validity (factor analysis with principal axis extraction) and construct validity (using data concerning self-assessment of general occupational being and assessment of general occupational being of other teachers at school, two hypothesis were tested) and unidimensionality (principal component analysis). Results: Cronbach's α for subscales, assessment of a current situation: 0.75-0.86, and for subscales assessment of needs for the improvement: 0.80-0.93. Factor structure of the scale was convergent with the expected one. Construct validity of the subscales was satisfactory - all hypotheses were confirmed. All subscales were also unidimensional. Conclusions: Psychometric analysis of the scale gave satisfactory results concerning its quality. The scale can be used as a tool in staff's health promotion, especially in the health promoting schools. © Instytut Medycyny Pracy im. prof. J. Nofera w Łodzi.

Sokolowska B.,Katedra i Klinika Hematoonkologii i Transplantacji Szpiku | Bykowska Prof. K.,Instytut Hematologii i Transfuzjologii | Mendek-Czajkowska Prof. E.,Instytut Hematologii i Transfuzjologii | Nowaczynska Prof. A.,Katedra i Klinika Hematoonkologii i Transplantacji Szpiku | And 10 more authors.
Acta Haematologica Polonica | Year: 2013

In this study we assessed homocysteine level in 106 patients with ET - 80 females and 26 males, mean age 54 (23-82) and in 20 healthy persons - 6 males and 14 females, mean age 41 (31-54). We also searched for a relation between homocysteine level and MTHFR gene mutation as well as vitamin B12 and folic acid concentration. Median homocysteine serum level was higher in ET patients than in control group. Elevated homocysteine level primarily stems from folic acid deficiency rather than from the presence of MTHFR gene mutation. Median folic acid level was lower in ET patients presenting thrombotic and bleeding complications than in ET patient without vascular episodes. We concluded that folic acid substitution may not only prevent hyperhomocysteinemia but also the development of vascular complications in ET patients. © 2013 Polskie Towarzystwo Hematologów i Transfuzjologów, Instytut Hematologii i Transfuzjologii. Published by Elsevier Urban & Partner Sp. z o.o. All rights reserved.

Majchrzak K.,Szkola Glowna Handlowa
Przemysl Chemiczny | Year: 2010

Impact of the crude oll industry on the environment and population life quality was discussed. Attempts of the petroleum-upstream and downstream companies to improve their social image were reviewed.

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