منابع مشابه
Won't You Be My Neighbor? Local Induction of Arteriogenesis
Two recent papers in Cell and Developmental Cell provide evidence that VEGF directs arterial differentiation. Evidence that sensory nerves direct arteriogenesis and that the membrane-spanning Notch signaling system is downstream of VEGF emphasize the paracrine regulation of vessel formation.
متن کامل“And Who Is My Neighbor?” Religion and Immigration Policy Attitudes
This study explores immigration reform as a possible new “moral” issue upon which American religious elites and organizations take public positions. It is argued that religion is a key independent variable necessary for understanding the determinants of public attitudes regarding immigration policy. Theoretical expectations are formed from the ethnoreligious, religious restructuralism, and mino...
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Discovery supposes either chance or inductive reasoning. We document here an approach to explore genome texts, where the neighborhoods of genes and gene products (in the genome, in phylogeny, in metabolic pathways, in codon usage bias, ‘‘in biblio’’. . .) were used to make inferences about the function of unknown genes. Examples are provided in the case of pyrimidine biosynthesis, showing that ...
متن کاملLightness Perception: Seeing One Color through Another
A newly described and dramatic visual illusion suggests that the retinal image is decomposed by the brain into overlapping layers, not into contiguous frameworks of illumination.
متن کاملColor image segmentation by gravitational clustering in color space using neighbor-relationship
In this paper, we propose a color image segmentation method based on gravitational clustering using neighbor relations in the spatial domain and distance information in RGB space among pixels. Most clustering-based segmentation algorithms use only color space distances after pixels are mapped from the spatial domain to color space, ignoring their neighbor relations; but we use both information....
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ژورنال
عنوان ژورنال: The Journal of Negro History
سال: 1942
ISSN: 0022-2992
DOI: 10.2307/2714739