2,954 research outputs found

    Reticent on Race: Promoting Constructive Discussions about Race in a College Classroom

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    This case study details the classroom dynamics of a Race and Ethnicity course and how to create a comfortable and engaging environment. To determine what students believe leads to a productive dialogue, two colleagues at a small liberal arts college in Maryland used in-depth interview data from ten students to identify four key pedagogical techniques. These strategies were the basis for teaching a group that includes students who are resistant to the existence and implications of white privilege. The data revealed that students want to feel like they are being educated, and not directed. Students’ desire to give input can be inhibited by instructors that have already decided the direction of the class, which deprives students of the chance to shape the conversation, feel engaged, confident, and empowered. Navigating and participating in a conversation about race is an important skill that is also an antidote to the dearth of productive dialogue in this arena. Students appreciate the ability to draw their own conclusions and to hone their critical thinking skills

    Amicus Brief in Obergefell v. Hodges

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    Supreme Court precedent establishes that the government may not punish children for matters beyond their control. Same-sex marriage bans and non-recognition laws (“marriage bans”) do precisely this. The states argue that marriage is good for children, yet marriage bans categorically exclude an entire class of children – children of same-sex couples – from the legal, economic and social benefits of marriage. This amicus brief recounts a powerful body of equal protection jurisprudence that prohibits punishing children to reflect moral disapproval of parental conduct or to incentivize adult behavior. We then explain that marriage bans punish children of same-sex couples because they: 1) foreclose their central legal route to family formation; 2) categorically void their existing legal parent-child relationships incident to out-of-state marriages; 3) deny them economic rights and benefits; and 4) inflict psychological and stigmatic harm. States cannot justify marriage bans as good for children and then exclude children of same-sex couples based on moral disapproval of their same-sex parents’ relationships or to incentivize opposite-sex couples to “procreate” within the bounds of marriage. To do so, severs the connection between legal burdens and individual responsibility and creates a permanent class or caste distinction

    Determining the Professional Development Needs of Florida Integrated Pest Management Extension Agents

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    With agriculture as the second largest economic industry in Florida, the state\u27s Extension agents need subject matter expertise necessary for disseminating the latest in agricultural research information to agricultural producers. Using an exploratory sequential design coupled with a Borich model, we determined the professional development needs of Florida Extension agents working in integrated pest management (IPM). Through our needs assessment, we identified 16 IPM competencies and found that the highest priority relative to needed professional development was for the competency determining pest thresholds. Extension personnel can use the list generated to assess perceptions of importance and ability level regarding IPM competencies among Extension professionals in their states

    Eyes Save Lives Water Safety Program for Parents and Caregivers: Program Design and Pilot Evaluation from Southern California

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    Despite expert consensus and evidence-based preventative strategies against drowning, limited formal study exists on translating recommendations into practical and effective interventions. This paper describes the design of an education-based drowning prevention intervention and reports results from a pilot evaluation of the program’s effect on self-reported water-safe behaviors, attitudes, self-efficacy, and knowledge. Parents and caregivers attending children’s swim lessons in July and August 2018 participated in a brief water-safety education program. A pre-post-test design evaluated Theory of Planned Behavior indicators to assess for changes. We found significant increases in scores related to water safety knowledge, attitudes on maintaining arms reach distance to children in the pool, recognizing a child in distress, and self-efficacy of responding to water emergencies involving a child between pre- and post-program. Swim lessons provided a captive audience receptive to drowning prevention information. Due to minimal costs, the program could easily be replicated and delivered to a variety of parent groups

    Widening Access to Higher Education for Students from Economically Disadvantaged Backgrounds : What Works and Why? [Summary Report]

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    There are significant social inequalities in access to higher education internationally. Students from the most disadvantaged backgrounds remain persistently under-represented in higher education (HE). Put simply, university populations fail to reflect their broader societies, with the vast majority of entrants coming from more advantaged backgrounds. Our research contributes to the ongoing effort by systematically examining the evidence for policy and programme interventions that widen access to higher education. We also examined trends in widening access in Scotland, barriers to access, and the impact of the national outreach scheme, the Schools for Higher Education Programme (SHEP), in supporting students to overcome these barriers. We provide recommendations for different stakeholders

    Optimizing SNR for multi-metabolite hyperpolarized carbon-13 MRI using a hybrid flip-angle scheme

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    Purpose: To improve the SNR of hyperpolarized carbon-13 MRI of [1-13C]pyruvate using a multispectral variable flip angle (msVFA) scheme in which the spectral profile and flip angle vary dynamically with time. Methods: Each image acquisition in a time-resolved imaging experiment used a unique spectrally varying RF pulse shape for msVFA. Therefore, the flip angle for every acquisition was optimized for pyruvate and each of its metabolites to yield the highest SNR across the acquisition. Multispectral VFA was compared with a spectrally varying constant flip-angle excitation model through simulations and in vivo. A modified broadband chemical shift-encoded gradient-echo sequence was used for in vivo experiments on six pregnant guinea pigs. Regions of interest placed in the placentae, maternal liver, and maternal kidneys were used as areas for SNR measurement. Results: In vivo experiments showed significant increases in SNR for msVFA relative to constant flip angle of up to 250% for multiple metabolites. Conclusion: Hyperpolarized carbon-13 imaging with msVFA excitation produces improved SNR for all metabolites in organs of interest

    Sulfate Enhances the Adsorption and Retention of Cu(II) and Zn(II) to Dispersed and Aggregated Iron Oxyhydroxide Nanoparticles

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    The adsorption and retention of metal ions to nanoscale iron (hydr)oxides in aqueous systems is significantly influenced by prevailing environmental conditions. We examined the influence of sulfate, the second most common anion in seawater that is present in many other natural aquatic systems, on the adsorption and retention of Cu(II) and Zn(II) to synthetic iron oxyhydroxide nanoparticles (NPs) and their aggregates. Batch uptake experiments with monodisperse NPs and NPs aggregated by changes in pH, ionic strength, and temperature were conducted over sulfate concentrations ranging from 0 to 0.30 M. The introduction of 0.03 M sulfate significantly increased the initial adsorption and retention of Zn(II) and Cu(II) compared to sulfate-free conditions; with increasing sulfate \u3e0.03 M, Zn(II) retention continuously increased, while Cu(II) retention was considerably more variable but increased slightly. NP aggregation, when induced by pH and ionic strength, was positively correlated with metal ion retention, while aggregation temperature was negatively correlated with both adsorption and retention. Aqueous geochemical modeling indicated that Zn(II) readily complexes with sulfate to form ZnSO4 (aq), but that stable aqueous CuSO4 species are uncommon. EXAFS spectroscopic analysis suggests structural incorporation of Zn(II) and Zn(II)-sulfate ternary surface complexation, while Cu(II) primarily forms inner-sphere bidentate surface complexes. Collectively, the effects of sulfate in both reducing surface charge repulsion, initiating ternary surface complexation, and enabling structural incorporation aid to enhance both metal adsorption and retention to iron oxyhydroxide NPs and their aggregates
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