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1
Content available remote Dokonanie mianowania grupowego w procesie podejmowania decyzji
Kowalczyk A., Prystaj A.
Czasopismo Techniczne. Środowisko
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2006
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R. 103, z. 10-Ś
153-159
PL
W niniejszym artykule rozważa się problem szeregowania decydentów wedle znaczenia (wagi) ich opinii w procesie podejmowania decyzji grupowych. Uszeregowanie takie proponuje się nazwać "mianowaniem". Podano kilka sposobów ustalenia mianowania reprezentatywnego dla całej grupy decydentów.
EN
The problem of sorting of decision-makers according to importance their opinions expressed in group decisions making process, is considered in the paper. This kind of arrangement could be named "nomination", as the Authors propose. Some methods for finding a nomination representing whole decision-makers group have been described.
2
Content available remote Kinematyczny efekt działania przelewu bocznego : badania eksperymentalne
Mączałowski A., Prystaj A.
Czasopismo Techniczne. Środowisko
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2005
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R. 102, z. 8-Ś
177--185
PL
W niniejszym artykule zamieszczono część wyników pomiarów i obserwacji przeprowadzonych na modelu hydraulicznym dotyczących kinematyki przepływu wody w obrębie przelewów bocznych w korycie rzecznym.
EN
The operation of side weirs situated in river channel and, in this context, kinematic problems were researched on hydraulic model. Some results of tests and observations have been presented.
3
Content available remote Modele jakościowe. Algorytm Symulacyjny QSIM. Cz.1
Kubiak R., Prystaj A.
Czasopismo Techniczne. Środowisko
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2002
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R. 99, z. 2-Ś
77--86
EN
The basis of the Kuipers' method, widely known as the qualitative simulation, have been presented. There is one from some another methods for describing the behavior of a dynamical system and leads to a tree of alternating time-interval and time-point system states. The integral element of the qualitative simulation is the QSIM algorithm and its block diagram in a general form has been shown in the paper.
4
Content available remote Modelowanie i rachunek jakościowy - podstawy
Kubiak R., Prystaj A.
Czasopismo Techniczne. Budownictwo
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2000
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R. 97, z. 5-B
58--58
EN
The paper gives general remarks on idea of qualitative approach in mathematical modelling. Some definitions and basic rules of qualitative calculus have been presented.
5
Content available Odpływ kolektorem deszczowym przy czasoprzestrzennej zmienności opadu
Kowalska W., Prystaj A., Wieczysty A.
Ochrona Środowiska
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1998
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nr 2
2-6
EN
Presented are the assumptions for a mathematical model which describes the unsteady flow of surface runoff and the unsteady discharge of storm water from the sewer.Surface runoff is characterized in terms of the kinematic wave equation.Since it has been assumed that the wastewater stream in the sewer follows gradually varied,one-dimensional,free-surface flow pattern, it is possible to make use of the Saint-Venant equations in thier full formulation.The equations of the mathematical model ( appropriately determined initial and boundary conditions) are solved by a finite difference numerical method.The algorithm of the solution has been coded as a computer programme (ALFA),thus making it possible not only to simulate the operation of the sewer system under arbitrary feeding conditions,but also to perform technical and cost-effectiveness analyses.Considered are two flow patterns in the storm sewer.In pattern (A)rainfall of a time-variable intensity is assumed to move downstream (in the direction of the direction of the outflow cross-section ) at a constant velocity.In pattern (B),reinwater is assumed to trawel upstream at the same velocity.When formulating the numerical example,consideration has been given to the geometry,slope and pipe roughness of the sewer,as well as to relevant parameters of the adjacent catchment area.The distributions of effective rainfall intensity for every part of the catchment is determined for pattern (A) and pattern (B).Computations are performed using the ALFA programme.Some of the results obtained are presented in graphical form to visualize how the storm water level in the cross-sections of the sewer varies with time forn the flow patterns considered.
6
Content available remote Działanie kolektora deszczowego przy zmianie warunków jego zasilania
Kowalska W., Mionczyńska N., Prystaj A., Wieczysty A.
Czasopismo Techniczne. Budownictwo
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1998
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R. 95, z. 5-B
27--31
EN
One of the possibilities of application of the computer programme ALFA is shown in the paper. The numerical example has been described. It was assumed, that the hydrograms of waste waters inflow to the sewer sre changed for some reasons and the analyse of the operation of the storm sewer in new conditions is needed. The programme ALFA was used for computation and obtained results have been presented.
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