An approach to dynamic traffic assignment including solution methods
Allocation ; Dynamic model ; Model ; Optimization ; Traffic ; Transport ; Transport cost
In the paper, the constraint set of the dynamic traffic assignment problem is qualified first. The qualified constraint set can be applied to any dynamic traffic assignment problem. Then a continuous dynamic system optimum model and a discrete
dynamic system optimum are presented. The model can be applied to dynamic traffic assignment for multiple destination networks.
Geographical Information Systems and dynamic models
Climatic variation ; Concept ; Fluvial hydrology ; Geographical information system ; Heathland ; Netherlands (The) ; Vegetation dynamics ; Water balance ; Watershed
This research deals with approaches and concepts for a fruitful integration of dynamic models and GIS. It gives an overview of the current state of GIS and the characteristics of dynamic models. It is focussed on the concepts behind an integration
of dynamic models and GIS. The different case-studies in this work serve as examples of the techniques and concepts described earlier. These case-studies refer to water balance situations of large river basins with respect to their sensitivity to climatic
A study on fluvial dynamic geomorphology and its experiment and simulation
Channel geometry ; China ; Discharge ; Experimentation ; Fluvial dynamics ; Fluvial erosion ; Fluvial processes ; Human impact ; Model ; Simulation ; Watershed
As a branch of geomorphology, the fluvial dynamic geomorphology is a marginal science among fluid dynamics, sediment mechanics and fluvial geomorphology. With physical modelling by similarity based on Newtonian mechanics, and principle of the same
effect but different structure based on systematic theory, it is possible to study properties, formation and processes in fluvial dynamic geomorphology. A new research method, which is a combination of mathematical simulation by computer with physical
A nonlinear dynamical model of landslide evolution
A nonlinear dynamical model for the evolution of landslide is proposed. The parameters of this model are obtained through an improved iterative algorithm of inversion developed in the paper. Based on the nonlinear dynamical model and nonlinear
dynamical systems (NDS) theory, the approaches to determining the Lyapunov exponents, the predictable timescale and the stability criterion of the evolutional state of landslide are given. A case study of the Xintan slope is presented to illustrate
the capability and merit of the nonlinear dynamic model.