815 research outputs found
The Critical Role of Dopamine in the Evolution of Human Intelligence and Thermal Tolerance
No full textModern humans are unique among anthropoids in many key features, including our advanced intelligence, large brain-body size, thermal tolerance, and endurance capability. The objective of this theoretical review is to update the theory of Previc (1999) postulating the importance of dopamine in human evolution by synthesizing newer findings concerning dopamine’s role in human intellectual and endurance capabilities. Recent evidence further supports the putative role of dopamine in advanced human intelligence (especially cognitive flexibility) and thermal tolerance and endurance. One key breakthrough is a collection of recent studies demonstrating a uniquely human dopaminergic innervation of the striatum and prefrontal cortex—both essential to human cognition. Another potentially important finding is the human-specific mutation of an enhancer to the EN1 gene that controls eccrine gland formation and plays a major role in the development of dopaminergic brain systems. A plausible evolutionary scenario is put forth in which the enhanced thermal capabilities linked to dopaminergic evolution may have gradually led to the enhanced intellects of modern humans
Retelling racialized violence, remaking white innocence: the politics of interlocking oppressions in transgender day of remembrance
No full textTransgender Day of Remembrance has become a significant political event among those resisting violence against gender-variant persons. Commemorated in more than 250 locations worldwide, this day honors individuals who were killed due to anti-transgender hatred or prejudice. However, by focusing on transphobia as the definitive cause of violence, this ritual potentially obscures the ways in which hierarchies of race, class, and sexuality constitute such acts. Taking the Transgender Day of Remembrance/Remembering Our Dead project as a case study for considering the politics of memorialization, as well as tracing the narrative history of the Fred F. C. Martinez murder case in Colorado, the author argues that deracialized accounts of violence produce seemingly innocent White witnesses who can consume these spectacles of domination without confronting their own complicity in such acts. The author suggests that remembrance practices require critical rethinking if we are to confront violence in more effective ways. Description from publisher's site: http://caliber.ucpress.net/doi/abs/10.1525/srsp.2008.5.1.2
Two H-mixed Synthetic Indices for the Assessment of Research Performance
No full textThe author proposes two h-mixed synthetic indices, S=100?1g(h?CPP) and T=100?1g(R?h?CPP), for the assessment of research performance, where CPP stands for citations per publication, h for h-index, and R for R-index, the square root of total number of citations in the Hirsch core (Ch). Like their components that respectively measure average citations of all publications, publication output and impact, and total number of citations in the Hirsch core, the h-mixed synthetic indices S and T use readily accessible data to produce a holistic measurement of academic achievement. Higher values correspond to greater academic achievement. The S and T indices are stratified by values of 100 to indicate varying degrees of achievement, where S<100 or T<100 indicates poor levels
Land Lease A between Carson Estate Company and Fred M. Kuwahara, October 19, 1948
No full textDescribes lease agreement from October 1, 1948 to September 30, 1949. Land measurement is described in chains; yearly rent is $1670. Carson Estate Company signatory is Hamilton H. Cotton, secretary; Fred M. Kuwahara signature includes a Compton address
Visual Pattern Recognition in the Cerebral Hemispheres: The Role of Spatial Filtering
No full text The differences between the left and right cerebral hemispheres in terms of visual pattern recognition were examined within the context of the spatial filtering model of visual perception. On the basis of a wide range of evidence, it was hypothesized that the right hemisphere's predominant role in Gestalt perception may be related to its superiority in processing low spatial frequency information, while the left hemisphere may be more highly involved in an analysis of high frequency information contained in the visual environment. The spatial filtering capabilities of the left and right hemispheres were assessed by presenting square-wave gratings to the left and right visual fields, which project to the primary visual cortical areas of the contralateral hemispheres. 24 right-handed adult males were required to identify the orientation of each of six gratings varying in fundamental spatial frequency and level of contrast. Analyses of variance indicated that identification performance was superior over-all in the right visual field. The magnitude of the advantage of the right visual field latency was greater for the high frequency gratings, although this predicted trend did not attain significance. Results were discussed in relation to the spatial filtering theory and others concerning hemispheric differences in visual pattern recognition. </jats:p
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