Research notes: A second gene for resistance to peanut mottle virus in soybean

Soybean (Glycine max [L.] Merr.) was first reported as a natural host of peanut mottle virus (PMV) in 1972 by research workers in Georgia (Kuhn et al., 1972). PMV on soybean has since been reported in Virginia, South Carolina, Australia, and East Africa (Demski and Kuhn, 1977). Boerma and Kuhn (1976) reported resistance to PMV in soybeans to be conditioned by a completely dominant allele at a single locus. The objective of this study was to determine if there are other genes and/or alleles that might condition resistance to PMV

Spatial Release From Masking in Children: Effects of Simulated Unilateral Hearing Loss

The purpose of this study was twofold: 1) to determine the effect of an acute simulated unilateral hearing loss on children’s spatial release from masking in two-talker speech and speech-shaped noise, and 2) to develop a procedure to be used in future studies that will assess spatial release from masking in children who have permanent unilateral hearing loss. There were three main predictions. First, spatial release from masking was expected to be larger in two-talker speech than speech-shaped noise. Second, simulated unilateral hearing loss was expected to worsen performance in all listening conditions, but particularly in the spatially separated two-talker speech masker. Third, spatial release from masking was expected to be smaller for children than for adults in the two-talker masker

Binaural advantages in users of bimodal and bilateral cochlear implant devices

This is the published version, also available here: http://dx.doi.org/10.1121/1.4831955.This paper investigates to what extent users of bilateral and bimodal fittings should expect to benefit from all three different binaural advantages found to be present in normal-hearing listeners. Head-shadow and binaural squelch are advantages occurring under spatially separated speech and noise, while summation emerges when speech and noise coincide in space. For 14 bilateral or bimodal listeners, speech reception thresholds in the presence of four-talker babble were measured in sound-field under various speech and noise configurations. Statistical analysis revealed significant advantages of head-shadow and summation for both bilateral and bimodal listeners. Squelch was significant only for bimodal listeners

Three-body collisions in Boltzmann-Uehling-Uhlenbeck theory

Aiming at a microscopic description of heavy ion collisions in the beam energy region of about 10 A GeV, we extend the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) transport model by including a relativistic mean field, in-medium baryon-baryon cross sections and three-body collisions. The model is then compared with experimental data for central Au+Au collisions at 2-10 A GeV and central Pb+Pb collisions at 30 and 40 A GeV on the proton rapidity spectra, the midrapidity yields of $\pi^+$, $K^\pm$ and $(\Lambda+\Sigma^0)$, and the transverse mass spectra of $\pi^\pm$ and $K^\pm$. The three-body collisions increase the inverse slope parameters of the hadron $m_\perp$-spectra to a good agreement with the data.Comment: 26 pages, 9 figures, figures added, discussion extended, results not changed, version accepted in Phys. Rev.

The Unspace Case: Developing a Maker Movement in a Multipurpose, Flexible Space, Library Setting

This paper presents the ongoing design, development, and implementation of a K-16 maker movement centered around a joint public school/university library whose minimal dedicated space has expanded opportunities for public participation, partnerships, and shared resources. As the library sought to circulate STEM resources for K-9 teachers and students in 2011, University instructors were seeking opportunities for preservice teachers to interact meaningfully with authentic, technology-rich environments. These separate endeavors coalesced over time to form a robust community of various school, university, and public stakeholders focused on mathematics and science learning. Because the space was not bound to a single physical location, proponents were able to leverage various resources, mobile tools, and settings to explore and apply STEM knowledge, construct products, and attract new and returning users. This design case articulates how the maker movement provides curricular programming while maintaining a playful atmosphere that encourages personal exploration regardless of age and ability

Development of temporal auditory processing in childhood: Changes in efficiency rather than temporal-modulation selectivity

The ability to detect amplitude modulation (AM) is essential to distinguish the spectro-temporal features of speech from those of a competing masker. Previous work shows that AM sensitivity improves until 10 years of age. This may relate to the development of sensory factors (tuning of AM filters, susceptibility to AM masking) or to changes in processing efficiency (reduction in internal noise, optimization of decision strategies). To disentangle these hypotheses, three groups of children (5–11 years) and one of young adults completed psychophysical tasks measuring thresholds for detecting sinusoidal AM (with a rate of 4, 8, or 32 Hz) applied to carriers whose inherent modulations exerted different amounts of AM masking. Results showed that between 5 and 11 years, AM detection thresholds improved and that susceptibility to AM masking slightly increased. However, the effects of AM rate and carrier were not associated with age, suggesting that sensory factors are mature by 5 years. Subsequent modelling indicated that reducing internal noise by a factor 10 accounted for the observed developmental trends. Finally, children’s consonant identification thresholds in noise related to some extent to AM sensitivity. Increased efficiency in AM detection may support better use of temporal information in speech during childhood

Анализ данных о смертности в России для разработки корпоративной системы пропаганды здорового образа жизни населения

Выпускная квалификационная работа 117 с., 13 рис., 34 табл., 16 источников, 1 прил. Объектом исследования являются данные, предоставленные МО 슫Здоровье슻, стандартизованных вопросников на умерших лиц. Цель работы установить закономерности в уже существующих статистических данных и данных проведенных в данном исследовании для дальнейшего использования в корпоративной системе пропаганды здорового образа жизни. В процессе исследования проводился ряд исследований по влиянию курения на смертность, распространенности курения среди населения, влияние различных факторов на смертность от болезней систем-кровообращения, обзор методов статистического анализа для медицинских исследований и практика их применеия.Final qualifying work 117 p., 13 fig., 34 tab., 16 Sources, Appendix 1. The object of research is the data provided by the Medical Association "Health", standardized questionnaires on deceased persons. The goal of the work to establish patterns in the existing statistics and data conducted in this study for further use in the corporate system of promoting a healthy lifestyle. The study was conducted a number of studies on the effect of smoking on mortality, the prevalence of smoking among the population, the impact of various factors on mortality from diseases of the circulatory systems, a review of methods of statistical analysis for medical research and practice them of use