نتایج جستجو برای: indirect selection
تعداد نتایج: 394508 فیلتر نتایج به سال:
In order to promote the engineering application of indirect evaporative cooling (IEC) in field building air conditioning, as well reduce conditioning energy consumption and carbon emissions, this paper proposes a fresh unit using achieve heat recovery from exhaust air, which gives recommended values spray water operation parameters. The cooler mass transfer mathematical model numerical solution...
Selection indices provide useful information to breeders who usually base selection on means and ranks. Knowledge on selection criteria for improving tef grain yield is very limited. Accordingly, the objective of this study was to develop selection criteria for improving tef grain yield through indirect yield component selection via a selection index. Different trait combinations along with thr...
Sexual conflict occurs when the evolutionary interests of the sexes differ and it broadly applies to decisions over mating, fertilization and parental investment. Recently, a narrower view of sexual conflict has emerged in which direct selection on females to avoid male-imposed costs during mating is considered the distinguishing feature of conflict, while indirect selection is considered negli...
of Dissertation Presented to the Graduate School of the University of Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy INDIRECT SHOOT ORGANOGENESIS AND SELECTION OF SOMACLONAL VARIATION IN Dieffenbachia 11 By Xiuli Shen May 2007 Chair: Michael E Kane Cochair: Jianjun Chen Major: Horticultural Science A series of experiments were conducted to investigate ...
While the human genome is 99.9% conserved the remaining 0.1% gives rise to a surprising amount of diversity. About 80% of this sequence divergence is in the form of single-nucleotide polymorphisms (SNPs) or single nucleotide substitutions that occur in at least 1% of the human population. The presence of such variants or alleles does not, in itself, provide a high degree of variability in the h...
We study a generalization of the Wright–Fisher model in which some individuals adopt a behavior that is harmful to others without any direct advantage for themselves. This model is motivated by studies of spiteful behavior in nature, including several species of parasitoid hymenoptera in which sperm-depleted males continue to mate despite not being fertile. We first study a single reproductive ...
Residual-based analysis is generally considered a cornerstone of statistical methodology. For a special case of indirect regression, we investigate the residual-based empirical distribution function and provide a uniform expansion of this estimator, which is also shown to be asymptotically most precise. This investigation naturally leads to a completely data-driven technique for selecting a reg...
Why should you help a competitor? Why should you contribute to the public good if free riders reap the benefits of your generosity? Cooperation in a competitive world is a conundrum. Natural selection opposes the evolution of cooperation unless specific mechanisms are at work. Five such mechanisms have been proposed: direct reciprocity, indirect reciprocity, spatial selection, multilevel select...
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