نتایج جستجو برای: baldwin
تعداد نتایج: 1634 فیلتر نتایج به سال:
We compare two forms of hybrid genetic search. The rst uses Lamarckian evolution, while the second uses a related method where local search is employed to change the tness of strings, but the acquired improvements do not change the genetic encoding of the individual. The latter search method exploits the Baldwin eeect. By modeling a simple genetic algorithm we show that functions exist where si...
Statistical investigations of samples of quasars have established that clusters of properties are correlated. The strongest trends among the ultraviolet emission-line properties are characterized by the object-to-object variation of emission from low-velocity gas, the so-called " intermediate-line region " or ILR. The strongest trends among the optical emission-line properties are characterized...
Baldwin's classic hypothesis states that behavioral plasticity can speed evolution by (a) smoothing the fitness landscape and (b) indirect genetic assimilation of acquired characteristics. This latter phase demands a strong correlation between genotype and phenotype space. But the natural world shows signs of this correlation at only a very coarse level, since the intervening developmental proc...
Changes in constitutional power involve conflict. These contests can be modelled as a strategic interaction. The abdication of Edward VIII was primarily interaction between him and his prime minister Stanley Baldwin. using game theory, but heresthetic better describes how both players attempted to change the incentives choices available other, well veto that could block movement away from statu...
Deacon [1] considers that the reverse Baldwin effect can be one of the major forces in language evolution. The reverse Baldwin effect is essentially a redistributional process of genes as a result of environmental changes which mask and unmask selection pressures. Although Deacon indicates that in the case of language evolution, niche construction is deeply involved in masking and unmasking pro...
From a large homogeneous sample of optical/UV emission line measurements for 993 quasars from the Large Bright Quasar Survey (LBQS), we study correlations between emission line equivalent width and both restframe ultraviolet luminosity (i.e., the Baldwin Effect) and redshift. Our semi-automated spectral fitting accounts for absorption lines, fits blended iron emission, and provides upper limits...
We assemble a sample consisting of 66 active galactic nuclei (AGNs) from literature and the XMM-Newton archive in order to investigate the origin of the 6.4 keV narrow iron Kα line (NIKAL). The X-ray Baldwin effect of the NIKAL is confirmed in this sample. We find the equivalent width (EW ) of the NIKAL is more strongly inversely correlated with Eddington ratio (E) than the 2-10 keV X-ray lumin...
An increasing number of dissident voices claim that the standard neo-Darwinian view of genes as 'leaders' and phenotypes as 'followers' during the process of adaptive evolution should be turned on its head. This idea is older than the rediscovery of Mendel's laws of inheritance, with the turn-of-the-twentieth-century notion eventually labeled as the 'Baldwin effect' as one of the many ways in w...
In June 1908, James Mark Baldwin, then Professor of Psychology and Philosophy at Johns Hopkins University and at the pinnacle of his career, was arrested in a Baltimore house of prostitution. Although he insisted on both his legal and moral innocence and all legal charges against him were dismissed, the threat of scandal led Hopkins authorities to demand Baldwin's resignation and Baldwin to rem...
Embora se tenha dito que James Baldwin seja um ativista antes de escritor, em Terra estranha encontramos a produção muito mais pelo viés do agenciamento (conforme o conceito dos filósofos Gilles Deleuze e Félix Guattari) enseja as máquinas desejantes, pela noção engajamento escritor é situado. Neste artigo busca-se indicar que, por lado, não há como negar existe lastro aspectos biográficos, out...
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