2,295 research outputs found

    Lean Enterprise Approach for Programs

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    The effect of changes in natural and anthropogenic deposition on modelling recovery from acidification

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    International audienceThe multi-layer dynamic soil chemistry SAFE model was used to study the dynamics of recovery in the F1 catchment at Lake Gårdsjön, Sweden. The influence of (1) sulphate adsorption, and (2) changes in marine deposition, on model predictions of recovery was studied. Sulphate adsorption/desorption in SAFE is modeled by an isotherm in which sulphate adsorption is dependent on both the sulphate concentration and the pH in the soil solution. This isotherm was parameterised for the B-horizon of F1 for the sulphate concentration range 10?260 m mol-1 and the pH range 3.8?5.0. Sulphate adsorption/desorption as the only soil process involving sulphate is adequate to predict sulphate in run-off at F1. Adding the process caused time-delays in sulphate concentration in run-off of only 1-2 years, which was much shorter than previously seen in the adjacent G1 catchment. The location of Lake Gårdsjön, approximately 15 km inland from the Swedish west coast, ensures that the marine deposition to the area is high. Model output showed that the temporal variation in marine deposition has a considerable impact on the run-off chemistry. Such changes in marine deposition are difficult to foresee and their influence on modelled run-off chemistry can be large when soils start to recover as the previously high concentrations of anthropogenic sulphate in the soil solution decrease. Keywords: climate change, dynamic modelling, run-off chemistry, sea-salt effect, soil and water acidification, sulphate adsorptio

    Effect of Auditory and Visual Stimuli on Brain Potential Rhythms

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    This study attempts to compare the blocking of the Berger rhythm caused by visual and auditory sensations. Four stimuli were used - a bright light of one hundred (100) watts, a dim light of twenty-five (25) watts, a thousand cycle tone at approximately seventy (70) decibels, and a similar tone at approximately forty (40) decibels. A series of two hundred stimuli composed of fifty of each of these arranged in random order was presented to the subject. The records were read for latency and perseveration of the blocking and the four types of stimulus were compared

    Visual depictions of gender in parenting magazines

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    The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Title from title screen of research.pdf file (viewed on September 8, 2008)Thesis (M.A.) University of Missouri-Columbia 2008.This study examines gender-behavior modeling in the photographs of parenting magazines. This magazine category has been largely ignored in research on gender depictions in the media, even though the content may have primary media effects on adult readers and secondary effects on their children in terms of gender behavior expectations. The social acquisition of gender theory asserts that people continue to shape gender attitudes into adulthood and the social learning theory has shown that viewers adopt behaviors modeled in the media. Thus, parenting magazine readers are susceptible to internalizing gender behaviors modeled in photographs. The goal of this study is to understand the scope of visual gender depictions that a reader encounters in the magazines. A quantitative analysis of photographs from the editorial content of Cookie,Family Fun, Parenting, and Parents explores whether the behaviors, activities, and attributes of 2,479 characters were linked to gender. The findings revealed that, although boys and girls exhibit slight difference in activities and behavior, the depictions of children tend to be gender egalitarian. In contrast, parenting roles are gender disparate. Fathers are vastly underrepresented, and the magazines resort to conventional definitions of mothering (nurturance, care) and fathering (direction, playfulness) in the photographs. A post hoc qualitative study of fathering depictions reveals that fathers adopt the traditional feminine roles of expressing affection and showing care, but maintain stereotypical male inclinations to be their children's teacher and playmate.Includes bibliographical reference

    Studies of the Gyponinae (Homoptera: Cicadellidae): Six New Species of Ponana from Central and South America

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    Author Institution: Department of Entomology, The Ohio State UniversitySix new species of Ponana, P. hilara n. sp., P. panera n. sp., P. sena n. sp., P. seresa n. sp., P. serrella n. sp., and P. tabula n. sp., are described. Three species, P. sena, P. seresa, and P. tabula, are from Guatemala; P. panera was collected in Mexico; and P. hilara and P. serella are from Peru

    Two New Species of Polyamia (Homoptera: Cicadellidae) from Honduras and Chile

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    Author Institution: Department of Entomology, The Ohio State UniversityTwo new species of Polyamia are described: P.freytagi from Honduras and P. cekalovici from Chile

    Banded Grape Bug

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    NYS IPM Type: Fruits IPM Fact SheetThe banded grape bug is a sporadic, early-season pest of grapes that feeds on clusters between bud break and bloom. It damages grapes during the period of rapid shoot expansion and flower cluster development. Injury by the banded grape bug was first reported in the Lake Erie region in the early 1900s. Recently, infestations have been observed in both Lake Erie and central New York vineyards. It is also present throughout the eastern states as far south as North Carolina. Cluster feeding by the banded grape bug directly reduces the productivity of Concord grapes and presumably other grape cultivars
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