Sentences with word «stochasticity»

However, as empirical studies are limited we have no a priori global estimate, and we might expect significant geographic variation or demographic stochasticity [39], [40].

The analysis revealed that the human genome is organized into large pieces of low or high epigenetic stochasticity, and that these regions correspond to areas of chromosomes that are structurally different in the cell nucleus.

Empirically calibrating damage functions and considering stochasticity when integrated assessment models are used as decision tools.

Tagged under: Course bibliography: Hydrometeorology, Course bibliography: Stochastic methods, Climate stochastics, Determinism vs. stochasticity, Works discussed in weblogs, Entropy, Hurst - Kolmogorov dynamics, Scaling, Stochastics, Uncertainty

Feinberg thinks that a main function of a cell's nucleus might be to partition the genome to make sure that regions of low or high stochasticity are well - defined.

The main point is that there is hypothetically room for both systems to exist and function simultaneously, suggesting that at least in nature there is some kind of selective pressure for stochasticity in order to prevent needless complexity and inefficiencies.

Correctly estimating how environmental stochasticity influences fitness and population growth.

The other significant finding of the study, says Garrett Jenkinson, Ph.D., assistant research scientist at the Johns Hopkins Whiting School of Engineering who carried out much of the analyses, was that this variability goes haywire in cancer cells, which may display significant regional differences in methylation stochasticity compared to normal cells.

Prof Hui and co-researchers are now working on expanding the platform to allow the differentiation of system stochasticity and external noise in driving portfolio inflation.

Disease outbreaks that often preferentially disadvantage the most bleaching - sensitive taxa are known to follow bleaching events (2), predator concentration can lead to significant post-bleaching losses (3), and coral settlement processes (implicit in the model's parameter r) are often characterized by spatial and temporal stochasticity, making any sort of analytical solution or prediction difficult.

If the target ratio for a mix of cells becomes more complex, where the denominator in the fraction is higher, it would become more difficult for a deterministic system to be successful; this is where stochasticity lends itself as an alternative.

Researchers say the changes may be due to random biochemical fluctuations known as stochasticity, or «noise» — variability occurring over time and influenced by environmental factors.

Based on the evolutionary idea that targeted epigenetic stochasticity can improve adaptation, these observations could explain how cancer cells are good at evading chemotherapy treatments and spreading from one part of the body to another, he adds.

Tagged under: Course bibliography: Hydrometeorology, Course bibliography: Stochastic methods, Climate stochastics, Determinism vs. stochasticity, Works discussed in weblogs, Hurst - Kolmogorov dynamics, Papers initially rejected, Stochastics, Uncertainty

To find out if that was the case, he teamed up with John Goutsias, Ph.D., professor of electrical and computer engineering at the Johns Hopkins Whiting School of Engineering, to find a way to measure this controlled type of randomness, scientifically termed epigenetic stochasticity, by using the information - theoretic concept of Shannon entropy.

Stochasticity, the random nature of biochemical processes, is an unavoidable feature underlying cell biology, and some organisms — including plants — have evolved ways to harness this randomness.

In some cases, the stochasticity is in conflict with the normal mathematical meaning of a differential equation: It calls for solutions that are simultaneously rough and smooth.

His hope is that his simple approach, which articulates a tendency for determinism or stochasticity, is something scientists can reflect on when thinking about how to best set up future experiments in the field of developmental biology.

Here there are two different parts of the eye which, when thought about with rational numbers between 0 and 1, show the tendencies towards determinism and stochasticity that Prof. Sinclair refers to in his hypothesis.

These findings on gene expression in single embryonic stem cells are in concert with recent studies of early mammalian development, which reveal molecular heterogeneity and a stochasticity of gene expression in blastomeres.

However, as the results naturally show quite a bit of stochasticity, what one can not answer is how close this particular result is... at least not without access to data that doesn't exist.

By contrast, Christiansen et al. (2009) demonstrated worse performance for TTLS in pseudoproxy studies when stochasticity is considered — confirming that the Mann et al. (2005) result is unlikely to be a general one.

The PVA model also incorporates environmental and demographic stochasticity.