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  • Laboratory
  • The high growth rates, cell yields of the cultures, and the constitutive expression of an impressively efficient natural competence apparatus, amongst other properties, make some strains of the genus excellent laboratory models to study the molecular basis of thermophilia. (diva-portal.org)
  • This system, created in the laboratory of Jasna Brujić, an assistant professor in NYU's Department of Physics and part of its Center for Soft Matter Research, is said to be an oil-in-water solution whose surface properties reproduce those found on biological cells. (theengineer.co.uk)
  • The probabilistic description taken by the models in this category was inspired from laboratory experiments involving either natural or pharmacological stimulation which exhibit variability in the resulting spike pattern. (wikipedia.org)
  • Since 2010 At the technion he also heads the Enterprise Systems Modeling Laboratory. (wikipedia.org)
  • Units
  • Neuron models can be divided into two categories according to the physical units of the interface of the model. (wikipedia.org)
  • The input stage of these models is not electrical, but rather has either pharmacological (chemical) concentration units, or physical units that characterize an external stimulus such as light, sound or other forms of physical pressure. (wikipedia.org)
  • approaches
  • Numerous kinetic models of these networks have been developed in computational biology, of increasing complexity due to advances in modelling and parameter estimation approaches (see [ 1 , 2 ] for an example). (springer.com)
  • however, such approaches are not focused on, or do not include, the conceptual part of complexity related to organization and topological attributes or algebraic topology, such as network connectivity of genomes, interactomes and biological organisms that are very important. (wikipedia.org)
  • Quantitative
  • This unit builds on the foundation provided in Quantitative Methods in Biology to familiarise students with more advanced model building techniques including generalised linear, mixed and additive models, regression trees, bootstrapping methods, and non-linear regression. (edu.au)
  • mechanisms
  • Many of the included examples are characterised by highly complex, nonlinear, and supercomplex mechanisms, as it is being increasingly recognised that the result of such interactions may only be understood through a combination of mathematical, logical, physical/chemical, molecular and computational models. (wikipedia.org)
  • stimulus
  • Traditional study of biological systems requires reductive methods in which quantities of data are gathered by category, such as concentration over time in response to a certain stimulus. (wikipedia.org)
  • Natural or pharmacological input neuron models - The models in this category connect between the input stimulus which can be either pharmacological or natural, to the probability of a spike event. (wikipedia.org)
  • 20th century
  • Great advances in immunology and oncology continued to characterize the 20th century, for which we indebted to the chicken model. (wikipedia.org)
  • organisms
  • this is because the latter is restricted primarily to simplified models of biological organization and organisms, as well as to only a general consideration of philosophical or semantic questions related to complexity in biology. (wikipedia.org)
  • genetic
  • Phylogenetics is an area that deals with the reconstruction and analysis of phylogenetic (evolutionary) trees and networks based on inherited characteristics Traditional population genetic models deal with alleles and genotypes, and are frequently stochastic. (wikipedia.org)
  • Discrete
  • The feasibility of our approach is demonstrated by the analysis of stability and bifurcations of several discrete biological models using implementations of algebraic methods. (springer.com)
  • Allen L.J.: Some discrete-time SI, SIR, and SIS epidemic models. (springer.com)
  • dynamics
  • The analysis of the sub-model dynamics allows us to identify the source of circadian oscillations. (springer.com)
  • Travelling wave solutions of the space and time fractional models for non-linear blood flow in large vessels and Deoxyribonucleic acid (DNA) molecule dynamics defined in the sense of Jumarie's modified Riemann-Liouville derivative via the first integral method are presented in this study. (aimsciences.org)
  • Population models are used to determine maximum harvest for agriculturists, to understand the dynamics of biological invasions, and for environmental conservation. (wikipedia.org)
  • Work in this area dates back to the 19th century, and even as far as 1798 when Thomas Malthus formulated the first principle of population dynamics, which later became known as the Malthusian growth model. (wikipedia.org)
  • Understanding
  • Modeling of dynamic interactions in nature can provide a manageable way of understanding how numbers change over time or in relation to each other. (wikipedia.org)
  • interactions
  • Together, Lotka and Volterra formed the Lotka-Volterra model for competition that applies the logistic equation to two species illustrating competition, predation, and parasitism interactions between species. (wikipedia.org)
  • Growth
  • One of the most basic and milestone models of population growth was the logistic model of population growth formulated by Pierre François Verhulst in 1838. (wikipedia.org)
  • The logistic model takes the shape of a sigmoid curve and describes the growth of a population as exponential, followed by a decrease in growth, and bound by a carrying capacity due to environmental pressures. (wikipedia.org)
  • important
  • Biological systems manifest many important examples of emergent properties in the complex interplay of components. (wikipedia.org)
  • Various models of the spread of infections have been proposed and analyzed, and provide important results that may be applied to health policy decisions. (wikipedia.org)
  • physics
  • He has presided the International Council for NMR in Biological Systems, the Indian Biophysical Society, the Indian Chemical Society and has served as the vice president of the International Union of Pure and Applied Physics. (wikipedia.org)
  • species
  • Population models can track the fragile species and work and curb the decline. (wikipedia.org)
  • The equilibrium model of island biogeography describes the number of species on an island as an equilibrium of immigration and extinction. (wikipedia.org)
  • studies
  • Furthermore, the availability of plasmids and up to four thermostable antibiotic selection markers allows its use in physiological studies as a model for ancient bacteria. (diva-portal.org)
  • The studies devise models that may at least theoretically be implemented on hardware. (wikipedia.org)
  • previous
  • Previous biological models of object recognition in cortex have been evaluated using idealized scenes and have hard-coded features, such as the HMAX model by Riesenhuber and Poggio . (mit.edu)
  • hidden Marko
  • In electrical engineering, computer science, statistical computing and bioinformatics, the Baum-Welch algorithm is used to find the unknown parameters of a hidden Markov model (HMM). (wikipedia.org)
  • A hidden Markov model describes the joint probability of a collection of "hidden" and observed discrete random variables. (wikipedia.org)
  • The Baum-Welch algorithm uses the well known EM algorithm to find the maximum likelihood estimate of the parameters of a hidden Markov model given a set of observed feature vectors. (wikipedia.org)
  • cells
  • But for objects whose size is similar to the wavelength, e.g., water droplets in the atmosphere, latex particles in paint, droplets in emulsions, including milk, and biological cells and cellular components, a more exact approach is necessary. (wikipedia.org)
  • multiple
  • Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene, but the biological validity of some variants has not been determined. (wikipedia.org)
  • original
  • Hodgkin and Huxley's original model only employed two voltage-sensitive currents (Voltage sensitive ion channels are glycoprotein molecules which extend through the lipid bilayer, allowing ions to traverse under certain conditions through the axolemma), the fast-acting sodium and the inward-rectifying potassium. (wikipedia.org)