1,479 research outputs found
Context, Curriculum, and Community Matter: Leadership Practices of Primary School Principals in the Otago Province of New Zealand
This research examined the leadership practices of rural primary school principals in the Otago province of New Zealand. Principals of large (\u3e150 students) and small (students) rural schools served as participants in an investigation to learn how their practice creates and maintains effective rural schools. The goals were to investigate the interrelationships of principal, curriculum, and community and effective leadership in their schools. A mixed methods approach included a survey completed by rural principals (n = 63), followed by observations and interviews. Key findings were that leadership practices varied across contexts of large rural and small rural schools; having a local curriculum was critical; and, communication and involvement with parents and the community were essential. The survey had good psychometric qualities; validation through future research use is needed. Results are discussed in terms of factors to consider for effective leadership in rural schools
Popular music media literacy: A pilot study
The current study pilot tested a popular music media literacy website that was developed based on the final report of the APA Division 46 Task Force on the Sexualization of Popular Music (2018). The study hypothesized that popular music media literacy education would produce significant differences between the baseline assessment and post-literacy assessment for outcomes related to music reflecting real life, viewing the self as similar to music portrayals, music skepticism, level of engagement with music, and self-reported self-esteem. It was also hypothesized that participants would report favorable attitudes regarding the popular music media literacy website being tested. Participants included 52 emerging adult college students who completed the baseline assessment and the post-literacy assessments after reviewing the popular music media literacy website. At baseline, participants reported moderate levels of music as reflecting real life, viewing themselves as similar to music representations and self-reported self-esteem. Participants also reported high levels of music skepticism and engagement with music at baseline. Results indicated that the popular music media literacy website was effective in increasing general music skepticism. The implications for future research and next directions are discussed
Popular Music Media Literacy: A Pilot Study
The current study pilot tested a popular music media literacy website that was developed based on the final report of the APA Division 46 Task Force on the Sexualization of Popular Music (2018). The study hypothesized that popular music media literacy education would produce significant differences between the baseline assessment and post-literacy assessment for outcomes related to music reflecting real life, viewing the self as similar to music portrayals, music skepticism, level of engagement with music, and self-reported self-esteem. It was also hypothesized that participants would report favorable attitudes regarding the popular music media literacy website being tested. Participants included 52 emerging adult college students who completed the baseline assessment and the post-literacy assessments after reviewing the popular music media literacy website. At baseline, participants reported moderate levels of music as reflecting real life, viewing themselves as similar to music representations and self-reported self-esteem. Participants also reported high levels of music skepticism and engagement with music at baseline. Results indicated that the popular music media literacy website was effective in increasing general music skepticism. The implications for future research and next directions are discussed
Hepatic effects of tartrazine (E 102) after systemic exposure are independent of oestrogen receptor interactions in the mouse
Tartrazine is a food colour that activates the transcriptional function of the human oestrogen receptor alpha in an in vitro cell model. Since oestrogens are cholestatic, we hypothesised tartrazine will cause periportal injury to the liver in vivo. To test this hypothesis, tartrazine was initially administered systemically to mice resulting in a periportal recruitment of inflammatory cells, increased serum alkaline phosphatase activity and mild periportal fibrosis. To determine whether an oestrogenic effect may be a key event in this response, tartrazine, sulphonated metabolites and a food additive contaminant were screened for their ability to interact with murine oestrogen receptors. In all cases, there were no interactions as agonists or antagonists and further, no oestrogenicity was observed with tartrazine in an in vivo uterine growth assay. To examine the relevance of the hepatic effects of tartrazine to its use as a food additive, tartrazine was orally administered to transgenic NF-κB-Luc mice. Pre- and concurrent oral treatment with alcohol was incorporated given its potential to promote gut permeability and hepatic inflammation. Tartrazine alone induced NF- κB activities in the colon and liver but there was no periportal recruitment of inflammatory cells or fibrosis. Tartrazine, its sulphonated metabolites and the contaminant inhibited sulphotransferase activities in murine hepatic S9 extracts. Given the role of sulfotransferases in bile acid excretion, the initiating event giving rise to periportal inflammation and subsequent hepatic pathology through systemic tartrazine exposure is therefore potentially associated an inhibition of bile acid sulphation and excretion and not on oestrogen receptor-mediated transcriptional function. However, these effects were restricted to systemic exposures to tartrazine and did not occur to any significant effect after oral exposure
Winter wheat, 2000
"July 2000.""Publication costs paid by Missouri Seed Improvement Association."The objective of the Missouri Winter Wheat Performance Tests is to provide wheat growers in Missouri with a reliable, unbiased, up-to-date source of information that will permit valid comparisons among improved wheat varieties. This information should help Missouri wheat growers select varieties best suited to their particular area and growing conditions. This report summarizes soft red winter wheat variety trials conducted throughout Missouri during the 1999-00 cropping season. No hard red winter wheat test was grown in 2000
Processes to manage analyses and publications in a phase III multicenter randomized clinical trial
Background: The timely publication of findings in peer-reviewed journals is a primary goal of clinical research. In clinical trials, the processes leading to publication can be complex from choice and prioritization of analytic topics through to journal submission and revisions. As little literature exists on the publication process for multicenter trials, we describe the development, implementation, and effectiveness of such a process in a multicenter trial. Methods: The Hepatitis C Antiviral Long-Term Treatment against Cirrhosis (HALT-C) trial included a data coordinating center (DCC) and clinical centers that recruited and followed more than 1,000 patients. Publication guidelines were approved by the steering committee, and the publications committee monitored the publication process from selection of topics to publication. Results: A total of 73 manuscripts were published in 23 peer-reviewed journals. When manuscripts were closely tracked, the median time for analyses and drafting of manuscripts was 8 months. The median time for data analyses was 5 months and the median time for manuscript drafting was 3 months. The median time for publications committee review, submission, and journal acceptance was 7 months, and the median time from analytic start to journal acceptance was 18 months. Conclusions: Effective publication guidelines must be comprehensive, implemented early in a trial, and require active management by study investigators. Successful collaboration, such as in the HALT-C trial, can serve as a model for others involved in multidisciplinary and multicenter research programs. Trial registration The HALT-C Trial was registered with clinicaltrials.gov (NCT00006164)
Depalmitoylated Ras traffics to and from the Golgi complex via a nonvesicular pathway
Palmitoylation is postulated to regulate Ras signaling by modulating its intracellular trafficking and membrane microenvironment. The mechanisms by which palmitoylation contributes to these events are poorly understood. Here, we show that dynamic turnover of palmitate regulates the intracellular trafficking of HRas and NRas to and from the Golgi complex by shifting the protein between vesicular and nonvesicular modes of transport. A combination of time-lapse microscopy and photobleaching techniques reveal that in the absence of palmitoylation, GFP-tagged HRas and NRas undergo rapid exchange between the cytosol and ER/Golgi membranes, and that wild-type GFP-HRas and GFP-NRas are recycled to the Golgi complex by a nonvesicular mechanism. Our findings support a model where palmitoylation kinetically traps Ras on membranes, enabling the protein to undergo vesicular transport. We propose that a cycle of depalmitoylation and repalmitoylation regulates the time course and sites of Ras signaling by allowing the protein to be released from the cell surface and rapidly redistributed to intracellular membranes
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