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Start Over Coverage 213-224

2. Finding behavioral parameterization for a 1-D water balance model by multi-criteria evaluation

Creator:
Casper, Markus C., Mohajerani, Hadis , Hassler, Sibylle , Herdel, Tobias , and Blume, Theresa
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
forest evapotranspiration, water balance simulation, soil parameterization, and behavioral model
Language:
Slovak
Description:
Evapotranspiration is often estimated by numerical simulation. However, to produce accurate simulations, these models usually require on-site measurements for parameterization or calibration. We have to make sure that the model realistically reproduces both, the temporal patterns of soil moisture and evapotranspiration. In this study, we combine three sources of information: (i) measurements of sap velocities; (ii) soil moisture; and (iii) expert knowledge on local runoff generation and water balance to define constraints for a “behavioral” forest stand water balance model. Aiming for a behavioral model, we adjusted soil moisture at saturation, bulk resistance parameters and the parameters of the water retention curve (WRC). We found that the shape of the WRC influences substantially the behavior of the simulation model. Here, only one model realization could be referred to as “behavioral”. All other realizations failed for a least one of our evaluation criteria: Not only transpiration and soil moisture are simulated consistently with our observations, but also total water balance and runoff generation processes. The introduction of a multi-criteria evaluation scheme for the detection of unrealistic outputs made it possible to identify a well performing parameter set. Our findings indicate that measurement of different fluxes and state variables instead of just one and expert knowledge concerning runoff generation facilitate the parameterization of a hydrological model.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. Properties of differences of meromorphic functions

Creator:
Chen, Zong-Xuan and Zhon, Kwang Ho
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
meromorphic function, difference, divided difference, zero, and fixed point
Language:
English
Description:
Let $f$ be a transcendental meromorphic function. We propose a number of results concerning zeros and fixed points of the difference $g(z)=f(z+c)-f(z)$ and the divided difference $g(z)/f(z)$.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

5. Strong reflexivity of Abelian groups

Creator:
Bruguera, Montserrat and Chasco, María Jesús
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Pontryagin duality theorem, dual group, convergence group, continuous convergence, reflexive group, strong reflexive group, k-space, Čech complete group, and k-group
Language:
English
Description:
A reflexive topological group $G$ is called strongly reflexive if each closed subgroup and each Hausdorff quotient of the group $G$ and of its dual group is reflexive. In this paper we establish an adequate concept of strong reflexivity for convergence groups. We prove that complete metrizable nuclear groups and products of countably many locally compact topological groups are BB-strongly reflexive.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

6. To the analysis of internal dynamics of special case in a class of non-linear parametric pseudoplanetary systems

Creator:
Hertel, Milan and Škuderová, Alena
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
non-linear dynamics, parametric systems, and planetary systems
Language:
English
Description:
Within the frame of the mass discretisation method has been designed the mathematical - physical model of the pseudoplanetary system of seven degrees of freedom for the analysis of the influence of the number of satellites and for free or elastic mounting of the sun wheel as a next phase of the solution of general differential system with branched - split power flow.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public