University of Missouri

About: University of Missouri is a education organization based out in Columbia, Missouri, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 41427 authors who have published 83598 publications receiving 2911437 citations. The organization is also known as: Mizzou & Missouri-Columbia.

Comparative DNA Sequence Analysis of Wheat and Rice Genomes

Abstract: The use of DNA sequence-based comparative genomics for evolutionary studies and for transferring information from model species to crop species has revolutionized molecular genetics and crop improvement strategies. This study compared 4485 expressed sequence tags (ESTs) that were physically mapped in wheat chromosome bins, to the public rice genome sequence data from 2251 ordered BAC/PAC clones using BLAST. A rice genome view of homologous wheat genome locations based on comparative sequence analysis revealed numerous chromosomal rearrangements that will significantly complicate the use of rice as a model for cross-species transfer of information in nonconserved regions.

Use of behavioural stochastic resonance by paddle fish for feeding

Abstract: Stochastic resonance is the phenomenon whereby the addition of an optimal level of noise to a weak information-carrying input to certain nonlinear systems can enhance the information content at their outputs1,2,3,4. Computer analysis of spike trains has been needed to reveal stochastic resonance in the responses of sensory receptors5,6,7 except for one study on human psychophysics8. But is an animal aware of, and can it make use of, the enhanced sensory information from stochastic resonance? Here, we show that stochastic resonance enhances the normal feeding behaviour of paddlefish (Polyodon spathula)9,10, which use passive electroreceptors11,12 to detect electrical signals from planktonic prey13. We demonstrate significant broadening of the spatial range for the detection of plankton when a noisy electric field of optimal amplitude is applied in the water. We also show that swarms of Daphnia plankton are a natural source of electrical noise. Our demonstration of stochastic resonance at the level of a vital animal behaviour, feeding, which has probably evolved for functional success, provides evidence that stochastic resonance in sensory nervous systems is an evolutionary adaptation14.

The American Dream in Russia: Extrinsic Aspirations and Well-Being in Two Cultures

Abstract: Recent research in the United States suggests that individuals who strongly value extrinsic goals (eg, fame, wealth, image) relative to intrinsic goals (eg, personal growth, relatedness, community) experience less well-being This study examines such goals in university samples from two cultures—the United States and Russia Participants (N = 299) rated the importance, expectancies, and current attainment of 15 life goals, including 4 target intrinsic and 4 target extrinsic goals Results confirmed the relevance of the intrinsic-extrinsic distinction for both samples and that stronger importance and expectancies regarding extrinsic goals were negatively related to well-being, although these effects were weaker for Russian women Furthermore, for both men and women, perceived attainment of intrinsic goals was associated with greater well-being, whereas this was not the case for perceived attainment of extrinsic goals