Results 221 to 230 of about 188,059 (261)
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The British Journal for the Philosophy of Science, 1996
According to historical theories of biological function, a trait's function is determined by natural selection in the past. I argue that, in addition to historical functions, ahistorical functions ought to be recognized. I propose a theory of biological function which accommodates both.
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According to historical theories of biological function, a trait's function is determined by natural selection in the past. I argue that, in addition to historical functions, ahistorical functions ought to be recognized. I propose a theory of biological function which accommodates both.
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Science, 2009
Biochemistry![Figure][1] CREDIT: DUNHAM ET AL., EMBO J. 28 , 10.1038/EMBOJ.2009.120 (2009) In bacteria, low–copy number plasmids provide a model system for studying the segregation of DNA into daughter cells—partitioning requires only a centromere-like DNA site, a partition NTPase, and a centromere-binding protein.
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Biochemistry![Figure][1] CREDIT: DUNHAM ET AL., EMBO J. 28 , 10.1038/EMBOJ.2009.120 (2009) In bacteria, low–copy number plasmids provide a model system for studying the segregation of DNA into daughter cells—partitioning requires only a centromere-like DNA site, a partition NTPase, and a centromere-binding protein.
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Constrained implicit function fitting
[1992] Proceedings. 11th IAPR International Conference on Pattern Recognition, 2003Describes techniques for stabilizing the implicit function fitting process. The key drawback of implicit function fitting methods described in literature thus far has been the stability with respect to outliners in the data. In this paper methods for stabilizing the implicit function fitting using additional constraints in the form of surface (curve ...
Gabriel Taubin +2 more
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Fitness, aging and neurocognitive function
Neurobiology of Aging, 2005In this manuscript we provide a brief review of the recent literature that has examined the relationship among fitness training, cognition and brain. We began with a discussion of the non-human animal literature that has examined the relationship among these factors.
Arthur F, Kramer +4 more
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Evolutionary Neuroestimation of Fitness Functions
2003One of the most influential factors in the quality of the solutions found by an evolutionary algorithm is the appropriateness of the fitness function. Specifically in data mining, in where the extraction of useful information is a main task, when databases have a great amount of examples, fitness functions are very time consuming.
Jesús S. Aguilar-Ruiz +2 more
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Testing the Fit of a Parametric Function
Journal of the American Statistical Association, 1999General methods for testing the fit of a parametric function are proposed. The idea underlying each method is to "accept" the prescribed parametric model if and only if it is chosen by a model selection criterion. Several different selection criteria are considered, including one based on a modified version of the Akaike information criterion and ...
Aerts, M., Claeskens, G.A.M., Hart, J.D.
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Nonpolynomial fitting of multiparameter functions
Physical Review E, 1996A stochastic self-regulating simulated annealing optimization method is presented, and compared to other optimization methods such as the simplex, steepest descent, and the recently proposed fast fitting method by Penna [Phys. Rev. E 51, R1 (1995)].
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Profile Fitting by the Interference Function
Advances in X-ray Analysis, 1991AbstractOn the basis of the “column-like” powder model of Warren and Averbach, a profile fitting procedure was devised to obtain microstructural disorder parameters. The interference functionwhere d is the interplanar distance, λ the wavelength, θ the diffraction angle and N the number of cells within a column, was used to model experimental profiles ...
Lutterotti, Luca, Scardi, Paolo
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Fitting Density Functions with Polynomials
Applied Statistics, 1992Summary: A robust procedure is developed for estimating density functions from data. It requires the existence of a parametric function, called the key function, to give a first approximation to the density and then improves the fit using polynomial adjustments.
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2016
This chapter focuses on the fitness-contribution theory of function, which holds, roughly, that the function of a trait consists in its typical contribution to the fitness of the organisms that possess it. I begin by surveying several different theories within this family, and I show why any plausible version must include a statistical element.
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This chapter focuses on the fitness-contribution theory of function, which holds, roughly, that the function of a trait consists in its typical contribution to the fitness of the organisms that possess it. I begin by surveying several different theories within this family, and I show why any plausible version must include a statistical element.
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