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Evaluating the extent of the River Wisła freshwater plume in the Gulf of Gdańsk using seaWiFS data

100%

Sikora K. , Urbański J. A.

tom Vol. 28, No. 3-4

17-34

The extent of the River Wisla (Vistula) water plume in the Gulf of Gdansk was investigated using SeaWiFS (Sea-viewing Wide Field-of-view Sensor) data as the basis for PCA (Principal Components Analysis), indexation, composite and classic methods of classification (i.e. maximum likelihood classification and fuzzy sets). The percentage transformation of this data is suggested in order to obtain a high relative diversity of remotely sensed signals emerging from optically different waters. Comparison of the results obtained using these different classification methods showed that PCA was especially useful in this respect.

Uwarunkowania reaktywowania przewozów rzeką Wisłą

86%

Żurek T. , Żurek M.

2013

tom nr 6

In Poland, inland waterway transport has performed for centuries. An important feature of this transport remained the need to adapt fleet to the changing parameters of the waterway. For each waterways separate transport vessels were created. Capacity of the vessels was increased primarily by increasing the size of the ship on the line the waterline. The evolution of means of transport and their adjustment process also included on the river Vistula. In order to improve the waterway stream of the river course regulatory work was carried out . Further construction of barrages gives rise to successive bottlenecks for river transport. According to the authors the river Vistula could be again the road of waterway transport with changes in the fleet, which make possibility to load another ton and wouldn't drastically expanding its immersion.

Perspektywy ruchu towarowego na dolnej Wiśle. Cz. 1

72%

Bolt A.

tom [nr] 6 (26)

70-81

Współczesne potrzeby i uwarunkowania transportu lądowego powodują, że na perspektywy rozwoju śródlądowych dróg wodnych należy spojrzeć z zupełnie nowego punktu widzenia, przeprowadzając globalną analizę zysków i strat, w tym oddziaływań środowiskowych.

This is the first part of the article concerning the issue of condition and perspective of inland water transportation in Poland. The author describes contemporary problems of this branch and says what should be done to improve it.