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Selected elements of unconventional natural gas economics on the example of North American Energy market experience

Kaliski M., Krupa M., Sikora A.P., Szurlej A.

AGH Drilling, Oil, Gas

2013

Vol. 30, no. 1

97--108

There is a several year experience concerning exploration and production of shale resources in the USA. First production wells started in 1996 (the history of hydraulic fracturing is even 40-50 years older), and last few years one can observe a huge impact on American economy and decreasing level of natural gas import. One can assume that the development will grow significantly and the USA will stay self-sufficient and can start exportation of hydrocarbons - especially LNG. The economy will decide about the share of the natural gas in energy mix - energy balance. In the paper there is a detailed discussion concerning economy of the shale exploration and production (i.e. the costs of drillings, services, geological conditions versus timings and schedule of production). Based on analyzed scope one can predict a stable progress in cost reduction (learning curves) linked with production of shale hydrocarbons.

Krzywe uczenia jako narzędzie podejmowania decyzji o strukturze mocy wytwórczych elektroenergetyki

Malko J.

Przegląd Elektrotechniczny

2004

R. 80, nr 9

886-888

Krzywe uczenia wnoszą do dyskusji o rozwoju sektora zaopatrzenia w energię elektryczną element racjonalizacji wyboru w oparciu o historię postępu technik generacyjnych. Wykorzystanie tego narzędzia w strategicznym planowaniu rozwoju elektroenergetyki nadaje decyzjom politycznym walor obiektywizmu.

The learning curves contribute a rational element in the discuss about progress of electric power industry. This curves take into account the history of the development of this industry. The application of such tool in strategic planning of investments benefits in rationality of decisions.

The manner of research into psychomotor transfer in sport on the basis of learning process analysis

Łapszo J.

Acta of Bioengineering and Biomechanics

2002

Vol. 4, nr 1

91-100

The presented manner of investigating transfer was illustrated on the basis of research into 12 senior and 10 junior members of the Polish male national table tennis team, 6 highly skilled, adult, female table tennis players, 23 children practising table tennis, 13 highly-skilled male tennis players, and 9 adult, male competitors, highly skilled in other, non-racket sports. The term psychomotor learning was introduced. This learning was divided into movement, skills and situation motor behaviour. The research depended on the multiple repetition of a series of 17 simulated ball hitting movements and measuring the speed of these movements. The results were approximated by an exponential curve. Transfer was examined on the basis of the speed and range of learning calculated with respect to learning curves. The ratio of these two magnitudes was treated as the index of transfer. This reflected the transfer of the anticipatory experience and motor skills learned in real table tennis play to the conditions of simulated play. The index of transfer was the highest among female seniors and children, lower among male seniors and juniors practising table tennis and tennis, and the lowest among the group representing other sports. The research demonstrated the greater flexibility of anticipatory schemas and ball hitting skills in the group of female seniors and children than among the male seniors and juniors. The lowest transfer occurred in the group of other sports because of the small number of anticipatory and motor skills useful in table tennis play.