نتایج جستجو برای: evolution biological
تعداد نتایج: 764242 فیلتر نتایج به سال:
Our understanding of the evolution of 4He and 7Li depends critically on the available data for these two elements at low metallicity. In particular, the degree to which there is a slope in an abundance vs metallicity regression can help determine the evolution of He, C, N, and O in dwarf galaxies in the case of 4He, and cosmic-ray induced nucleosynthesis of LiBeB in our own galaxy in the case o...
This paper investigates the evolution of a void and an adjacent galaxy supercluster. For this purpose the quasispherical Szekeres model is employed. The Szekeres model is an exact solution of the Einstein field equations. In this way investigations of the evolution of the cosmic structures presented here can be freed from such assumptions as small amplitude of the density contrast. Studying the...
One of the important questions in biological evolution is to know if certain changes along protein coding genes have contributed to the adaptation of species. This problem is known to be biologically complex and computationally very expensive. It, therefore, requires efficient Grid or cluster solutions to overcome the computational challenge. We have developed a Grid-enabled tool (gcodeml) that...
Our understanding of language, its origins and subsequent evolution (including language change), is shaped not only by data and theories from the language sciences, but also fundamentally by the biological sciences. Recent developments in genetics and evolutionary theory offer both very strong constraints on what scenarios of language evolution are possible and probable, but also offer exciting...
This article attempts to explain the uniqueness in the history of Johore in terms of how the government has gone through and experienced a totally different history, as compared to other Malay states. This writing about Johore’s history is divided into several stages of evolution, transformation and metamorphosis. Firstly, this paper will discuss the evolution and early history of Johore, which...
NOTE Added 1 Mar 2015 The discussion of alternative geometries here should be integrated with the discussion of the nature of descriptive metaphysics in It also relates to an attempt to produce new Biological Evolutionary foundations for mathematics (BEFM) based on the roles of various kinds of construction kits in biological evolution. (Natural selection depends on construction kits, and produ...
We review models of biological evolution in which the population frequency changes deterministically with time. If is self-replicating, although equations for simple prototypes can be linearised, nonlinear arise many complex situations. For sexual populations, even simplest setting, are necessarily due to mixing parental genetic material. The solutions such display interesting features as multi...
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