Density-Dependent
Density Dependent Effect Occurs Regardless of Density
... a density-dependent ef- fect was important to explain the fluctuations of insect ...a density-dependent effect never played an im- portant role in explaining the ...a density- ...
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Exploring the density dependent structure of blowfly populations by nonparametric additive modeling
... of density- dependent vs. density-independent ...the density-dependent components of the model) and environmental stochas- ticity (typically related to the density-independent ...
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Density Dependent Recycling Promotes the Long Term Survival of Bacterial Populations during Periods of Starvation
... population density feedback, wherein growth is limited not only by the available resources but also by the population ...population density-dependent recycling could be an advanta- geous behavior ...
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Exact representations for tumour incidence for some density dependent models
... We obtain exact expressions for the time to tumour onset for several cases of density- dependent birth and death rates. This is achieved by transforming the underlying sys- tem of differential equations ...
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NATURAL SELECTION AND DENSITY-DEPENDENT POPULATION GROWTH
... Natural selection was studied in the context of density-dependent population growth using a single locus, continuous time model for the rates of change of population size a[r] ...
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A geometric approach for solving the density dependent diffusion Nagumo equation
... In this paper, some solutions of the density-dependent diffusion Nagumo equation are obtained by using a new approach, the Lie symmetry group-preserving scheme (LSGPS). The effects of various model parameters ...
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Metabolic shift in density-dependent stem cell differentiation
... seeding density-dependent differenti- ation of VPCs were the cytoskeleton regulators WAS and ...lower density cohort but was con- sistently up-regulated in the higher density ...
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Density dependent feedbacks, hysteresis, and demography of overgrazing sea urchins
... strong density dependence was observed to check population growth; with high-recruitment/high-density populations offset by reduced growth rates and decreased ...high- density populations were ...
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A stochastic SIR epidemic model with density dependent birth rate
... In this paper, we introduce stochasticity into a model of SIR with density dependent birth rate. We show that the model possesses non-negative solutions as desired in any population dynamics. We also carry ...
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DENSITY-DEPENDENT FERTILITY SELECTION IN EXPERIMENTAL POPULATIONS OF DROSOPHILA MELANOGASTER
... Experimental results indicate that: (1) relative fecundities of both sexes show density- dependent effects, (2) there is a strong density effect on male and female mat- in[r] ...
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Illusion of a Density Dependent Effect in Biology
... the density-dependent effect found by Smith [5] was not ...the dependent and/or independent ...a density-dependent effect using regression analysis, the error consistently acts as if it ...
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Quorum Sensing Mediated, Cell Density Dependent Regulation of Growth and Virulence in Cryptococcus neoformans
... cell density-dependent mechanism of communication between microorganisms, character- ized by the release of signaling molecules that affect microbial metabolism and gene expression in a synchronized ...cell ...
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Density dependent fitness benefits in quorum sensing bacterial populations
... We chose adenosine as a carbon source to examine this. In P. aeruginosa, adenosine is taken up by cells and degraded via inosine, hypoxanthine, xanthine, and urate to glyoxylate and urea, providing direct fitness benefits ...
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FITNESS AND DENSITY-DEPENDENT POPULATION GROWTH IN DROSOPHILA MELANOGASTER
... M O U R ~ O , AYALA and ANDERSON (1972), studying Drosophila willistoni populations homozygous for whole second chro- mosomes, obtained results similar to the present ones; t[r] ...
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FREQUENCY- AND DENSITY-DEPENDENT SELECTION ON A QUANTITATIVE CHARACTER
... One-locus models lead to different equilibrium values because of constraints on the relationship between the mean and variance imposed by the assumptions of those mode[r] ...
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An epidemic model with density dependent parameters and vaccination
... SUMMARY AND CONCLUSIONS In this paper we have studied a simple mathematical epidemic model with vaccination There are three possible equilibrium situations which arise Equilibrium wth po[r] ...
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STUDIES ON IMPROVING TEXTURE SEGMENTATION PERFORMANCE USING GENERALIZED GAUSSIAN MIXTURE MODEL INTEGRATING DCT AND LBP
... Partitioned dependent, Hierarchical dependent, Density dependent, Model dependent and Grid ...dependent. Density dependent approaches are grounded on an ...
8
Using Ecological Modeling to Enhance Instruction in Population Dynamics and to Stimulate Scientific Thinking
... a density-independent population-growth model; a density-de- pendent model (logistic model); and a density-dependent model incorporating two density-dependent processes, ...
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Statistical validation of structured population models for Daphnia magna
... the density-independent components of demographic rates with individual level data enabled the estimation of density-dependent parameters from aggregate structured population ...complex ...
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TD-DFT Calculations, NBO, NLO Analysis and Electronic Absorption Spectra of Some Novel Thiazolo[3,2-a]Pyridine Derivatives Bearing Anthracenyl Moiety
... dependant density functional theory (TD-DFT), [34] using “A new hybrid exchange-correlation functional using the Coulomb-attenuating method (CAM-B3LYP),” at the 6-311G (d, p) bases set ...
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