2,405 research outputs found

    An Unfinished Canvas: Local Partnerships in Support of Arts Education in California

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    In 2006, at the request of The William and Flora Hewlett Foundation, SRI International conducted a study aimed at assessing the status of arts education in California relative to state goals. The final report, An Unfinished Canvas. Arts Education in California: Taking Stock of Policy and Practice, revealed a substantial gap between policy and practice. The study found that elementary schools in particular are failing to meet state goals for arts education. In light of these findings, The Hewlett Foundation commissioned a series of follow-up studies to identify policy mechanisms or other means of increasing student access to arts education. This study, focusing on the ability of school districts to leverage support for arts education through partnerships with local arts organizations, is one of the follow-up studies.Partnerships may allow for the pooling of resources and lend support to schools in a variety of ways including artists-in-residency programs, professional development for teachers, exposing students to the arts through the provision of one-time performances at school sites, and organizing field trips to performances and exhibits. According to the California Visual and Performing Arts Framework for California Public Schools, partnerships among districts, schools, and arts organizations are most successful when they are embedded within a comprehensive, articulated program of arts education. Questions about the nature of partnerships that California districts and schools have been able to form with arts organizations, and the success of these partnerships to increase students' access to a sequential standards-based course of study in the four arts disciplines, served as the impetus for this study.A team of SRI researchers conducted case studies of partnerships between districts and arts organizations in six diverse California communities in spring 2008. The case study sites were selected for their particular arts education activities and diverse contexts and, as a result, do not offer generalizable data about partnerships between school districts and arts organizations in California. Instead, we highlight the ways that a sample of partnerships promotes arts education in California elementary schools to inform others who may be interested in building partnerships between school districts and arts organizations

    Using transformative learning theory to help prospective teachers learn mathematics that they already “know”

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    Prospective Teachers (PTs) often enter their mathematics content courses believing that they know enough mathematics to teach elementary school. However, research has shown that much of PTs’ knowledge is procedurally based and lacks depth and conceptual understanding. One job of Mathematics Teacher Educators (MTEs) in mathematics content courses is to help PTs become more mathematically proficient, by relearning the mathematics that they believe they already know in deeper, more connected ways. We suggest that one way for MTEs to do this is to incorporate Transformative Learning Theory (TLT) into their mathematics content courses. TLT is an application of andragogy, which are the methods or techniques used to teach adults. Through TLT, learners participate in a process where they are presented with a disorienting dilemma that perturbs their prior understandings. Learners work through the dilemma by critically reflecting on their prior understandings and participating in rational discourse with others. Ultimately, learners are tasked with making connections between their prior understandings and their new knowledge. In this paper, we describe a cycle of transformative learning theory and give examples of incorporating TLT into mathematics content courses for PTs through lessons on proportional reasoning and whole number concepts. We conclude by discussing general considerations and resources for incorporating TLT into mathematics content courses and how this helps PTs develop the five strands of mathematical proficiency (National Research Council, 2001)

    In utero DDT and DDE exposure and obesity status of 7-year-old Mexican-American children in the CHAMACOS cohort.

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    BackgroundIn utero exposure to endocrine disrupting compounds including dichlorodiphenyltrichloroethane (DDT) and dichlorodiphenyldichloroethylene (DDE) has been hypothesized to increase risk of obesity later in life.ObjectivesThe Center for the Health Assessment of Mothers and Children of Salinas (CHAMACOS) study is a longitudinal birth cohort of low-income Latinas living in a California agricultural community. We examined the relation of in utero DDT and DDE exposure to child obesity at 7 years of age. We also examined the trend with age (2, 3.5, 5, and 7 years) in the exposure-obesity relation.MethodsWe included 270 children with o,p´-DDT, p,p´-DDT, and p,p´-DDE concentrations measured in maternal serum during pregnancy (nanograms per gram lipid) and complete 7-year follow-up data including weight (kilograms) and height (centimeters). Body mass index (BMI; kilograms per meter squared) was calculated and obesity was defined as ≥ 95th percentile on the sex-specific BMI-for-age Centers for Disease Control and Prevention 2000 growth charts.ResultsAt 7 years, 96 (35.6%) children were obese. A 10-fold increase in o,p´-DDT, p,p´-DDT, or p,p´-DDE, was nonsignificantly associated with increased odds (OR) of obesity [o,p´-DDT adjusted (adj-) OR = 1.17, 95% CI: 0.75, 1.82; p,p´-DDT adj-OR = 1.19, 95% CI: 0.81, 1.74; p,p´-DDE adj-OR = 1.22, 95% CI: 0.72, 2.06]. With increasing age at follow-up, we observed a significant trend toward a positive association between DDT and DDE exposure and odds of obesity.ConclusionWe did not find a significant positive relation between in utero DDT and DDE exposure and obesity status of 7-year-old children. However, given the observed trend with age, continued follow-up will be informative

    Etiology Beliefs Moderate the Influence of Emotional Self-Control on Willingness to See a Counselor through Help-Seeking Attitudes among Asian American Students

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    To identify correlates of Asian American professional help-seeking, we tested a mediation model describing Asian American help-seeking (Asian value of emotional self-control → help-seeking attitudes → willingness to see a counselor; Hypothesis 1) in a sample of Asian American college students from the Pacific Northwest region of the United States (N = 232). We also examined biological and spiritual etiology beliefs as moderators of the mediation model (Hypotheses 2a & 2b). Our findings indicated that help-seeking attitudes significantly mediated the relation between emotional self-control and willingness to see a counselor, consistent with our mediation hypothesis. Furthermore, biological and spiritual etiology beliefs moderated this mediation model, providing partial support for our moderation hypotheses. Our findings suggest that researchers can contribute to the Asian American literature by investigating conditions in which established Asian American help-seeking models may or may not hold. In addition, the findings suggest additional nuanced ways for counselors to reach out to Asian American students to increase their mental health service utilization

    Postpartum Celebrity Images: Influence on Self- Thoughts and Appearance Management Behaviours of Postpartum Women

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    Within previous decades, opinions about pregnancy and post-partum behaviour featured in various news articles and within popular literature emphasized issues related to pregnancy and liquor; campaigns against teen pregnancy; pregnancy and weight gain; and pregnancy and dieting behaviour. Attention has shifted from these issues to appearance-related topics including rapid weight loss, exercise regiments and food restriction. For example, photographs of celebrities have provided visual evidence that women can gain weight during pregnancy, give birth and within weeks revert to a thin, pre-pregnant body size. A qualitative method was used to explore to what extent, if any, images of post-partum celebrity bodies influenced self-thoughts of non-celebrity post-partum mothers and their appearance management. A total of 35 women completed in-depth interviews. Viewing post-partum celebrity images stirred up emotions of jealousy, anxiety and frustration, often followed by statements of envy or justification. Most participants reported engaging in upward social comparison with images. However, most participants did not behave differently relative to their appearance management (i.e., dieting, exercise or dressing)

    Religious coping moderates the relation between racism and psychological well-being among Christian Asian American college students.

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    We examined the moderating role of positive and negative religious coping in the relation between racism and psychological well-being in a sample of Catholic and Protestant Asian American college students (N = 107). Based on prior theorizing on the two types of religious coping, combined with some limited empirical evidence, we predicted that positive religious coping would have a buffering effect (Hypothesis 1) on the racism-mental health relation and that negative religious coping would have an exacerbating one (Hypothesis 2). Participants completed an online survey containing measures corresponding to the study variables. Results indicated that the interaction between positive religious coping and racism was nonsignificant (β = .135; p = .280), so Hypothesis 1 was not supported. For Hypothesis 2, the negative religious coping and racism interaction term was statistically significant (β = .240; p = .014), but the moderating effect was in an unexpected direction, so that negative religious coping actually protected against the deleterious impact of racism on mental health. Our findings suggest that the theorized deleterious influence of negative religious coping may need to be reconsidered in an Asian American setting. The findings have the potential to inform practitioners who work with Asian American college students to better cope with the detrimental consequences of racism

    Racial Microaggressions, Cultural Mistrust, and Mental Health Outcomes Among Asian American College Students

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    The present study is an empirical investigation of cultural mistrust as a mediator in the association between racial microaggressions and mental health (anxiety, depression, and well-being) in a sample of Asian American college students. In addition, we explored the role of cultural mistrust as a mediator in the association between racial microaggressions and attitudes toward seeking professional help. Asian American participants (N = 156) were recruited from two institutions located in the Pacific Northwest region of the United States. Participants filled out an online survey consisting of measures assessing the study variables. Bootstrapped results indicated that cultural mistrust was a significant mediator in the relation between microaggressions and well-being, such that racial microaggressions was significantly and positively associated with cultural mistrust, which in turn was significantly and inversely related to well-being. Mediation models involving anxiety, depression, and help-seeking attitudes as outcome variables were nonsignificant. The significant mediation finding (microaggressions → mistrust → well-being) has implications for improved understanding of Asian American students’ reactions to modern day racism and how it relates to their sense of well-being

    Emotional Self-Control, Interpersonal Shame, and Racism as Predictors of Help-Seeking Attitudes among Asian Americans: An Application of the Intrapersonal-Interpersonal-Sociocultural Framework

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    The present study is a cross-sectional investigation of emotional self-control, interpersonal shame, and subtle racism as predictors of Asian American attitudes toward professional help-seeking in a sample of Asian American college students (N = 153). The authors applied and extended P. Y. Kim and Lee’s (2014) intrapersonal-interpersonal framework of Asian American help-seeking to include racism as a sociocultural correlate. It was hypothesized that emotional self-control (intrapersonal correlate), interpersonal shame variables of external shame and family shame (interpersonal correlates), and racism (sociocultural correlate) would incrementally predict professional help-seeking attitudes, controlling for previous counseling experience. Participants completed an online survey containing the demographic and study variables. Hierarchical regression analyses (Step 1: counseling experience; Step 2: emotional self-control; Step 3: interpersonal shame [external and family]; Step 4: racism) indicated that emotional self-control and racism were negative predictors of favorable attitudes, whereas external shame was a positive predictor of favorable help-seeking attitudes. The findings have implications for advancing the Asian American literature pertaining to professional help-seeking correlates and for practitioners working with Asian American students to favorably impact mental health service utilization

    Mutagenesis of Trichoderma reesei endoglucanase I: impact of expression host on activity and stability at elevated temperatures.

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    BackgroundTrichoderma reesei is a key cellulase source for economically saccharifying cellulosic biomass for the production of biofuels. Lignocellulose hydrolysis at temperatures above the optimum temperature of T. reesei cellulases (~50°C) could provide many significant advantages, including reduced viscosity at high-solids loadings, lower risk of microbial contamination during saccharification, greater compatibility with high-temperature biomass pretreatment, and faster rates of hydrolysis. These potential advantages motivate efforts to engineer T. reesei cellulases that can hydrolyze lignocellulose at temperatures ranging from 60-70°C.ResultsA B-factor guided approach for improving thermostability was used to engineer variants of endoglucanase I (Cel7B) from T. reesei (TrEGI) that are able to hydrolyze cellulosic substrates more rapidly than the recombinant wild-type TrEGI at temperatures ranging from 50-70°C. When expressed in T. reesei, TrEGI variant G230A/D113S/D115T (G230A/D113S/D115T Tr_TrEGI) had a higher apparent melting temperature (3°C increase in Tm) and improved half-life at 60°C (t1/2 = 161 hr) than the recombinant (T. reesei host) wild-type TrEGI (t1/2 = 74 hr at 60°C, Tr_TrEGI). Furthermore, G230A/D113S/D115T Tr_TrEGI showed 2-fold improved activity compared to Tr_TrEGI at 65°C on solid cellulosic substrates, and was as efficient in hydrolyzing cellulose at 60°C as Tr_TrEGI was at 50°C. The activities and stabilities of the recombinant TrEGI enzymes followed similar trends but differed significantly in magnitude depending on the expression host (Escherichia coli cell-free, Saccharomyces cerevisiae, Neurospora crassa, or T. reesei). Compared to N.crassa-expressed TrEGI, S. cerevisiae-expressed TrEGI showed inferior activity and stability, which was attributed to the lack of cyclization of the N-terminal glutamine in Sc_TrEGI and not to differences in glycosylation. N-terminal pyroglutamate formation in TrEGI expressed in S. cerevisiae was found to be essential in elevating its activity and stability to levels similar to the T. reesei or N. crassa-expressed enzyme, highlighting the importance of this ubiquitous modification in GH7 enzymes.ConclusionStructure-guided evolution of T. reesei EGI was used to engineer enzymes with increased thermal stability and activity on solid cellulosic substrates. Production of TrEGI enzymes in four hosts highlighted the impact of the expression host and the role of N-terminal pyroglutamate formation on the activity and stability of TrEGI enzymes
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