Browsing by Subject "productivity"

Now showing 1 - 3 of 3

Access status: Open Access ,
Comparative advantage of the EU in global value chains - How important and efficient are new EU members in transition?
(2016) Gurgul, Henryk; Lach, Łukasz
We suggest original modifications and extensions of the recently presented methodological developments in ex-post accounting framework in global value chains in order to obtain empirical results both for the analyzed group of ten CEE economies as well as at a country-and-sectorspecific level. The empirical results confirm that the role of the selected CEE economies in transition in creating value added with respect to the total value added in the European Union in the GVC framework was biggest in the cases of agriculture-, wood-products-, metal-production, and travel-and-tourism-related sectors. We also found that, after two decades of transition, the measures of productivity in the examined economies in 2009 were still much lower as compared to the EU average for most of the sectors. Moreover, in the transition period, these indexes were increasing, especially after EU accession. In contrary, after two decades of transition, the measures of capital efficiency in the ten CEE economies in 2009 were comparable to the EU average for most of the sectors. Moreover, during this period, the growth rates of these indexes were, in general, positive. However, their growth rates dropped after EU accession.
Access status: Open Access ,
Wydajność i czas pracy koparek wielonaczyniowych w kopalniach węgla brunatnego w Polsce
(2007) Kasztelewicz, Zbigniew; Kozioł, Kazimierz
There are two basic parameters which describe excavators work in Polish lignite mines, i.e. efficiency and working time. Presented indices describe individual types of excavators and an average value for all machines operating in the mine. Former exploitation results prove the proper use of their technical parameters, not only on the field of productivity but also time of work. Received values of those parameters are estimated as an European level. This parameters would be even higher when it had been possible to eliminate limitations which appeared periodically at the mine sites. Those limitations appeared in lignite mining industry on two fields: technical and organizational (shortage of parts, shortage of additional machinery, financial limits, standstills in peak energy demand hours, etc.).
Access status: Open Access ,
Zabieg perforacji otworu wiertniczego jako czynnik oddziałujący na wielkość skin-efektu
(2008) Habera, Łukasz; Frodyma, Antoni
The perforation of wellbore casing is essential to allow the reservoir fluid inflow to the wellbore and further up to the surface. The perforation job employing high-energy material, results, however, in decreasing the permeability factor in the near-wellbore zone, which negatively influences productivity/injection ability of the wellbore. General set of factors determining permeability depletion within the near-wellbore zone has been called skin-effect. In this study the authors will give a closer look into the skin-effect creation mechanism as a constituent induced by perforating job, as well as its influence on further wellbore operation.