Results 41 to 50 of about 2,130,795 (350)

A comparative study of immune system based genetic algorithms in dynamic environments [PDF]

open access: yes, 2006
Copyright @ 2006 ACMDiversity and memory are two major mechanisms used in biology to keep the adaptability of organisms in the ever-changing environment in nature.
Yang, S
core   +3 more sources

Fraction-of-Time Probability: Advancing Beyond the Need for Stationarity and Ergodicity Assumptions

open access: yesIEEE Access, 2022
Time series arising from measurements in many fields of physics, engineering, chemistry, biology, and econometrics, are commonly modeled as sample paths from an ensemble which, together with a probability measure, is called a stochastic process ...
Antonio Napolitano, William A. Gardner
doaj   +1 more source

Non-linear eigenvalue problems arising from growth maximization of positive linear dynamical systems [PDF]

open access: yes, 2014
We study a growth maximization problem for a continuous time positive linear system with switches. This is motivated by a problem of mathematical biology (modeling growth-fragmentation processes and the PMCA protocol).
Calvez, Vincent   +2 more
core   +4 more sources

Operations Research Tools for Biology

open access: yes, 2023
This thesis shows how to use Operations Research tools, e.g. Markov chains, optimization, game theory, and matchings, to understand problems that appear in biological contexts. We focus on two biological systems – the activation of the immune system in response to pathogens, and the metabolism of communities of different species of microbes. In Chapter
openaire   +2 more sources

Resolvent Positive Linear Operators Exhibit the Reduction Phenomenon [PDF]

open access: yes, 2011
The spectral bound, s(a A + b V), of a combination of a resolvent positive linear operator A and an operator of multiplication V, was shown by Kato to be convex in b \in R.
Cantrell   +15 more
core   +3 more sources

On Expressing and Monitoring Oscillatory Dynamics [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2012
To express temporal properties of dense-time real-valued signals, the Signal Temporal Logic (STL) has been defined by Maler et al. The work presented a monitoring algorithm deciding the satisfiability of STL formulae on finite discrete samples of ...
Luboš Brim   +2 more
doaj   +1 more source

Man-Machine-Environment Virtual Design and JACK Simulation of Rosa Roxburghii Picking Machine [PDF]

open access: yesE3S Web of Conferences, 2020
In order to improve the coordination between human and agricultural machinery, taking Rosa roxburghii picking machine as an example, a virtual design method based on human-machine-environment system, combined with three-dimensional digital simulation ...
Zhang Jianming, luo Bing
doaj   +1 more source

The complex formed between a synthetic RNA aptamer and the transcription repressor TetR is a structural and functional twin of the operator DNA–TetR regulator complex

open access: yesNucleic Acids Research, 2020
RNAs play major roles in the regulation of gene expression. Hence, designer RNA molecules are increasingly explored as regulatory switches in synthetic biology.
F. C. Grau   +4 more
semanticscholar   +1 more source

Analytical methods for non-linear fractional Kolmogorov-Petrovskii-Piskunov equation: Soliton solution and operator solution

open access: yes, 2021
Kolmogorov-Petrovskii-Piskunov (KPP) equation can be regarded as a generalized form of the Fitzhugh-Nagumo, Fisher and Huxley equations which have many applications in physics, chemistry and biology. In this paper, two fractional extended versions of the
Bo Xu, Yufeng Zhang, Sheng Z. Zhang
semanticscholar   +1 more source

Genetic Algorithm with New Stochastic Greedy Crossover Operator for Protein Structure Folding Problem

open access: yesКібернетика та комп'ютерні технології, 2020
Introduction. The spatial protein structure folding is an important and actual problem in biology. Considering the mathematical model of the task, we can conclude that it comes down to the combinatorial optimization problem.
Leonid Hulianytskyi, Sergii Chornozhuk
doaj   +1 more source

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