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QSPR Prediction of Retention Times of Methylxanthines and Cotinine by Bioplastic Evolution
Torrens, Francisco; Castellano, Gloria - In: International Journal of Quantitative … 3 (2018) 1, pp. 74-87
High-performance liquid-chromatographic retention times of methylxanthines and cotinine in human plasma and urine are modelled by structure–property relationships. Bioplastic evolution is an evolutionary perspective conjugating the effect of acquired characters, and relations that emerge among...
Persistent link: https://www.econbiz.de/10012047215
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Approximation of the Fokker–Planck equation of the stochastic chemostat
Campillo, Fabien; Joannides, Marc; Larramendy-Valverde, … - In: Mathematics and Computers in Simulation (MATCOM) 99 (2014) C, pp. 37-53
We consider a stochastic model of the two-dimensional chemostat as a diffusion process for the concentration of … the chemostat. We establish the Fokker–Planck equation associated with this diffusion process, in particular we describe …
Persistent link: https://www.econbiz.de/10010744769
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PERMANENCE, AVERAGE PERSISTENCE AND EXTINCTION IN NONAUTONOMOUS SINGLE-SPECIES GROWTH CHEMOSTAT MODELS
REHIM, MEHBUBA; TENG, ZHIDONG - In: Advances in Complex Systems (ACS) 09 (2006) 01, pp. 41-58
Non-autonomous single-species growth chemostat models with general response functions are considered. In the models …
Persistent link: https://www.econbiz.de/10005080967
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DYNAMIC COMPLEXITIES OF A CHEMOSTAT MODEL WITH PULSED INPUT AND WASHOUT AT DIFFERENT TIMES
ZHANG, SHUWEN; TAN, DEJUN; GU, HONGSHENG - In: Advances in Complex Systems (ACS) 11 (2008) 01, pp. 65-76
In this paper, we consider a predator–prey chemostat model with ratio-dependent Monod type functional response and …
Persistent link: https://www.econbiz.de/10005050851
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Objektmutation – nützlich aber teuer?
Brauer, Johannes - Nordakademie <Elmshorn> - 2008
Es werden verschiedene Varianten betrachtet, ob-jektorientierte Implementierungen für Binärbäumevorzunehmen. Dabei soll zum einen beleuchtet werden,wie Polymorphie benutzt werden kann, um Fallun-terscheidungen zu vermeiden. Zum anderen solluntersucht werden, ob die Technik der Objektmutati-on...
Persistent link: https://www.econbiz.de/10005869880
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Best-response dynamics in a birth-death model of evolution in games
Alós-Ferrer, Carlos; Neustadt, Ilja - 2010
. Learning, mutation, and long run equilibria in games. Econometrica 61, 29–56], where agents follow best-response decision rules … of the long-run probabilities of equilibria for given values of the mutation rate and the population size. We use this … fact to provide a direct proof of the stochastic stability of risk-dominant equilibria as the mutation rate tends to zero …
Persistent link: https://www.econbiz.de/10009471754
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Partial Bandwagon Effects and Local Interactions
Alós-Ferrer, Carlos; Weidenholzer, Simon - 2007
We consider partial bandwagon properties in the context of coordination games to capture the idea of weak network externalities. We then study a local interactions model where agents play a coordination game following a noisy best-reply process. We show that globally pairwise risk dominant...
Persistent link: https://www.econbiz.de/10009471891
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How Darwinian Should an Economy Be?
Saint-Paul, Gilles - 2014
This paper studies aggregate dynamics in a cobweb model where learning takes place through a selection mechanism, by which more successful firms are replicated at a higher rate. The structure of the model allows to characterize analytically the aggregate dynamics, and to compute the effect on...
Persistent link: https://www.econbiz.de/10010468181
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Modified Mutation in Asynchronous Differential Evolution
Vaishali; Sharma, Tarun K. - In: International Journal of Applied Evolutionary … 9 (2018) 1, pp. 52-63
mutation operation. The modification in a mutation operation is done to exploit the chosen random variables and to accelerate …
Persistent link: https://www.econbiz.de/10012042728
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Rectangular Ribbons and Generalized Topological Relations
Kazar, Okba; Lejdel, Brahim - In: International Journal of Agricultural and Environmental … 7 (2016) 2, pp. 70-88
In Geographical information system (GIS), the management of geographic objects is very important, especially not only for urban and environmental planning, but also for any application in a rural environment. In other hand, in GIS, there are different relationships between geographic objects,...
Persistent link: https://www.econbiz.de/10012042753