2,385 research outputs found

    Building Capacity for Sustainability through Curricular and Faculty Development: A Learning Outcomes Approach

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    Portland State University has made integration of sustainability across its academic programs an institutional priority. This article describes the strategies that have been used to engage faculty in developing sustainability curricula, including adopting sustainability as one of eight campus-wide learning outcomes, incorporating sustainability into the general education program, providing faculty development, and developing a Graduate Certificate in Sustainability. The article shares lessons learned and next steps planned to advance Portland State\u27s sustainability curricula

    Institutions for Managing Ecosystem Services

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    Two decades of research into the management of what economists call common-pool resources suggests that, under the right conditions, local communities can manage shared resources sustainably and successfully. These revolutionary findings challenge the long-held belief in the tragedy of the commons. Instead, we have found that tragedy is not inevitable when a shared resource is at stake, provided that people communicate. In many places—from Swiss pastures to Japanese forests—communities have come together for the sake of the environment and their own long-term well-being. Common-pool resources have two features: first, they are shared resources whose use by one person makes them less available for use by another; second, it is typically very difficult to limit the public’s access to them (through laws or physical barriers). Many, but not all, ecosystem services can be categorized as common-pool resources. Consider, for instance, the clean water provided by an intact watershed, the pollination provided by a community of bees, or the carbon sequestration provided by a healthy forest. These are public goods, but individual use can degrade a watershed or strip a forest, compromising these benefits for all. As we look to develop institutions to better manage ecosystem services, and ensure their resilience over time, we can benefit from the lessons learned in the management of common-pool resources. The principles below, gleaned from research into the successful stewardship of common-pool resources, can guide the establishment and evolution of institutions to manage many ecosystem services

    Teaching Online Research and Comprehension Skills through Guided Reading

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    Many leaders in various fields are calling for increased integration of digital literacies into the school curriculum, including the ability to find and evaluate information on the Internet. However, there is minimal evidence to suggest that these skills are successfully taught to students due to many factors. The purpose of this case study was to examine the juxtaposition of online research and comprehension skills within the guided reading framework. In particular, this study explored how a fourth grade teacher implemented online research and comprehension skills in guided reading lessons along with the role changes and challenges for the student and teacher. Results showed that online guided reading had many unique differences from the traditional guided reading framework. In addition, there were many role changes for the teacher and students, technological challenges, student challenges, and instructional challenges that occurred throughout the study. Implications for modifying the traditional guided reading framework and continuing challenges are discussed

    Effects of Sound Symbolism in Names on Personality Perception

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    We investigated effects of sound symbolism in names on personality perception. Participants were randomly assigned to a group that either had invented or non-invented round or sharp names. They were asked to fill out a BFI-10 and a BSRI-12 questionnaire for five different names followed by reading 10 descriptions of personality traits and circling either a round name or a sharp name that fit the description best. Results showed that sound type present in names affected perceptions of Extraversion and that name and sound type affected perceptions of Femininity. These results provide evidence of sound symbolic associations present in names

    HST/STIS Spectroscopy of the Lyman-Alpha Emission Line in the Central Dominant Galaxies in A426, A1795, and A2597: Constraints on Clouds in the Intracluster Medium

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    We report on HST/STIS spectra of the Lyman-alpha emission in the central dominant galaxies in three rich clusters of galaxies. We find evidence for a population of clouds in the intracluster medium.We detect 10 Ly-alpha absorption systems towards the nucleus of NGC1275 with columns of N(HI) 1E12-1E14 cm-2. The detected absorption features are most consistent with associated nuclear absorption systems. There is very little nuclear absorption at the systemic velocity in NGC1275. This implies that the large columns detected in the 21 cm line towards the parsec scale radio source avoid the line of sight to the nucleus. This gas may be located in a circumnuclear disk or torus. We detect at least one and possibly two absorption features towards the extended Ly-alpha in A426. We do not detect absorption towards the extended Ly-alpha emission in A1795, and A2597 with upper limits N(HI) 1E13 cm-2 for optically thin absorbers. Our data constrain the covering factor of any high column density gas in the ICM to be less than 25%. Our results suggest that the lack of observed intermediate temperature gas is not explained by obscuration. In addition, the low columns of gas on the 100 kpc scales in the ICM suggests that (1) the rate at which cold gas accumulates in the ICM on these scales is very low, and (2) the dense nebulae in the central 10 kpc must have cooled or been deposited in situ.Comment: 6 figure

    Spitzer, Near-Infrared, and Submillimeter Imaging of the Relatively Sparse Young Cluster, Lynds 988e

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    We present {\it Spitzer} images of the relatively sparse, low luminosity young cluster L988e, as well as complementary near-infrared (NIR) and submillimeter images of the region. The cluster is asymmetric, with the western region of the cluster embedded within the molecular cloud, and the slightly less dense eastern region to the east of, and on the edge of, the molecular cloud. With these data, as well as with extant Hα\alpha data of stars primarily found in the eastern region of the cluster, and a molecular 13^{13}CO gas emission map of the entire region, we investigate the distribution of forming young stars with respect to the cloud material, concentrating particularly on the differences and similarities between the exposed and embedded regions of the cluster. We also compare star formation in this region to that in denser, more luminous and more massive clusters already investigated in our comprehensive multi-wavelength study of young clusters within 1 kpc of the Sun.Comment: 21 pages, 6 tables, 13 figures. Full resolution figures at: http://astro.pas.rochester.edu/~tom/Preprints/L988e.pd

    Size-Specific Tree Mortality Varies with Neighbourhood Crowding and Disturbance in a Montane Nothofagus Forest

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    Tree mortality is a fundamental process governing forest dynamics, but understanding tree mortality patterns is challenging because large, long-term datasets are required. Describing size-specific mortality patterns can be especially difficult, due to few trees in larger size classes. We used permanent plot data from Nothofagus solandri var. cliffortioides (mountain beech) forest on the eastern slopes of the Southern Alps, New Zealand, where the fates of trees on 250 plots of 0.04 ha were followed, to examine: (1) patterns of size-specific mortality over three consecutive periods spanning 30 years, each characterised by different disturbance, and (2) the strength and direction of neighbourhood crowding effects on size-specific mortality rates. We found that the size-specific mortality function was U-shaped over the 30-year period as well as within two shorter periods characterised by small-scale pinhole beetle and windthrow disturbance. During a third period, characterised by earthquake disturbance, tree mortality was less size dependent. Small trees (<20 cm in diameter) were more likely to die, in all three periods, if surrounded by a high basal area of larger neighbours, suggesting that size-asymmetric competition for light was a major cause of mortality. In contrast, large trees (≥20 cm in diameter) were more likely to die in the first period if they had few neighbours, indicating that positive crowding effects were sometimes important for survival of large trees. Overall our results suggest that temporal variability in size-specific mortality patterns, and positive interactions between large trees, may sometimes need to be incorporated into models of forest dynamics

    The impact of depression on mothers’ neural processing of their adolescents’ affective behavior

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    12 pagesDepression affects neural processing of emotional stimuli and could, therefore, impact parent–child interactions. However, the neural processes with which mothers with depression process their adolescents’ affective interpersonal signals and how this relates to mothers’ parenting behavior are poorly understood. Mothers with and without depression (N = 64 and N = 51, respectively; Mage = 40 years) from low-income families completed an interaction task with their adolescents (Mage = 12.8 years), which was coded for both individuals’ aggressive, dysphoric, positive and neutral affective behavior. While undergoing fMRI, mothers viewed video clips from this task of affective behavior from their own and an unfamiliar adolescent. Relative to non-depressed mothers, those with depression showed more aggressive and less positive affective behavior during the interaction task and more activation in the bilateral insula, superior temporal gyrus and striatum but less in the lateral prefrontal cortex while viewing aggressive and neutral affect. Findings were comparable for own and unfamiliar adolescents’ affect. Heightened limbic, striatal and sensory responses were associated with more aggressive and dysphoric parenting behavior during the interactions, while reduced lateral prefrontal activation was associated with less positive parenting behavior. These results highlight the importance of depressed mothers’ affective information processing for understanding mothers’ behavior during interactions with their adolescents.This research was supported by a grant from the National Institute of Child Health and Human Development (5R01HD081362-05) awarded to L.S. and N.B.A. The funding sources had no role in the study design, data collection and analysis, or submission process
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