The perceptions of teachers and principals in regard to teacher leadership and school improvement

While the importance of effective leadership is undisputed, few studies have addressed what the role teachers have in effective leadership that promotes school improvement. This study draws on data analyzing survey responses from principals and teachers to better understand the perceptions of teachers and principals in regard to teacher leadership and to further examine perceptions of the role teacher leadership plays in school improvement. Also considered were needs, rewards, and barriers to effective teacher leadership, as well as the overall interest teachers have in becoming teacher leaders. The Teacher Leadership Roles survey was developed by the researcher and administered to public school principals (n=72) and teachers (n=144) from the state of Louisiana. Data for this study were analyzed using single-sample t-tests, independent-samples t-tests, paired-samples t-tests, and test for significance of difference between two proportions. According to the data collected in this study, perceptions of principals rated higher than those of the teachers regarding the frequency of enactment of teacher leadership roles. Furthermore, the data indicated that principals place more emphasis on teacher leadership and the role of teacher leadership in school improvement than do teachers themselves. The findings of this study raise concern that principals and teachers embrace different notions and assumptions of teacher leadership. Review of current literature clearly articulates the necessity of principals and teachers working collaboratively to enhance leadership positions and to institute new leadership roles for the sake of school improvement and student success

Utility Lines

The paintings included in this Thesis Exhibition explore the theme of fragility that retains quiet strength. Combining delicacy with tenacity is how I arrived at the name of the exhibition, Utility Lines. A utility line transfers energy and is vulnerable to both weather and accident; the fragile materiality is the weakness inherent to functionality. In my work, I am deciding how much responsibility for the stability of a composition can be carried by the most tenuous elements. I test how much of the emotional and compositional load of a painting can be born by muted colors, awkward shapes and unsteady lines. My paintings are about building powerful abstract compositions from vulnerable parts. My goal is to present the expansive power of intimate scenes and to demonstrate that monumentality is possible on a small scale

Iron(III)-Salophene: An Organometallic Compound with Selective Cytotoxic and Anti-Proliferative Properties in Platinum-Resistant Ovarian Cancer Cells

Background: In this pioneer study to the biological activity of organometallic compound Iron(III)-salophene (Fe-SP) the specific effects of Fe-SP on viability, morphology, proliferation, and cell-cycle progression on platinum-resistant ovariancancer cell lines were investigated. Methodology/Principal Findings: Fe-SP displayed selective cytotoxicity against SKOV-3 and OVCAR-3 (ovarian epithelial adenocarcinoma) cell lines at concentrations between 100 nM and 1 μM, while the viability of HeLa cells (epithelial cervix adenocarcinoma) or primary lung or skin fibroblasts was not affected. SKOV-3 cells in contrast to fibroblasts after treatment with Fe-SP revealed apparent hallmarks of apoptosis including densely stained nuclear granular bodies within fragmented nuclei, highly condensed chromatin and chromatin fragmentation. Fe-SP treatment led to the activation of markers of the extrinsic (Caspase-8) and intrinsic (Caspase-9) pathway of apoptosis as well as of executioner Caspase-3 while PARP-1 was deactivated. Fe-SP exerted effects as an anti-proliferative agent with an IC50 value of 300 nM and caused delayed progression of cells through S-phase phase of the cell cycle resulting in a complete S-phase arrest. When intra-peritoneally applied to rats Fe-SP did not show any systemic toxicity at concentrations that in preliminary trials were determined to be chemotherapeutic relevant doses in a rat ovarian cancer cell model. Conclusion/Significance: The present report suggests that Fe-SP is a potent growth-suppressing agent in vitro for cell lines derived from ovarian cancer and a potential therapeutic drug to treat such tumors in viv

Interventions and strategies involving primary healthcare professionals to manage emergency department overcrowding: a scoping review

Objectives To conduct a scoping review to identify and summarise the existing literature on interventions involving primary healthcare professionals to manage emergency department (ED) overcrowding.Design A scoping review.Data sources A comprehensive database search of Medline (Ovid), EMBASE (Ovid), Cochrane Library (Wiley) and CINAHL (EBSCO) databases was conducted (inception until January 2020) using peer-reviewed search strategies, complemented by a search of grey literature sources.Eligibility criteria Interventions and strategies involving primary healthcare professionals (PHCPs: general practitioners (GPs), nurse practitioners (NPs) or nurses with expanded role) to manage ED overcrowding.Methods We engaged and collaborated, with 13 patient partners during the design and conduct stages of this review. We conducted this review using the JBI guidelines. Two reviewers independently selected studies and extracted data. We conducted descriptive analysis of the included studies (frequencies and percentages).Results From 23 947 records identified, we included 268 studies published between 1981 and 2020. The majority (58%) of studies were conducted in North America and were predominantly cohort studies (42%). The reported interventions were either ‘within ED’ (48%) interventions (eg, PHCP-led ED triage or fast track) or ‘outside ED’ interventions (52%) (eg, after-hours GP clinic and GP cooperatives). PHCPs involved in the interventions were: GP (32%), NP (26%), nurses with expanded role (16%) and combinations of the PHCPs (42%). The ‘within ED’ and ‘outside ED’ interventions reported outcomes on patient flow and ED utilisation, respectively.Conclusions We identified many interventions involving PHCPs that predominantly reported a positive impact on ED utilisation/patient flow metrics. Future research needs to focus on conducting well-designed randomized controlled trials (RCTs) and systematic reviews to evaluate the effectiveness of specific interventions involving PHCPs to critically appraise and summarise evidence on this topic