Teachers\u27 Perceptions And Realizations Of Critical Literacy

This dissertation examines teachers\u27 perceptions and realizations of critical literacy learning as they engaged in collaborative inquiry into their students\u27 learning. Participants used critical discourse analysis (CDA) of student writing and student talk to uncover the ideologies at work in their classrooms. This study also investigated teachers\u27 perceptions of tensions related to their work with critical literacy. This study extends ideas from the research literature about teachers\u27 perceptions and realizations of critical literacy and the potential of CDA for critical literacy and professional learning. This qualitative study was guided by ethnographic principles to understand participants\u27 perspectives through their experiences with CDA and critical literacy learning. The investigation involved 11 participants from the existing critical literacy teacher group of 20 teachers. A focus group of five teachers was selected from the larger group to participate in focus group interviews, classroom observations and informal interviews. Data sources included interview data, classroom observation fieldnotes, participant reflection journals, and transcripts from teacher group working sessions provided descriptive data about teachers\u27 perceptions of their work with critical literacy across professional learning, classroom practice and personal reflections. Data were analyzed with two different methods: grounded theory and existing typologies for content analysis. Evidence from the data suggests that through CDA, tensions emerged that led to changes in participants\u27 perceptions and realizations of critical literacy. CDA also contributed to changes in participants\u27 perceptions and realizations of critical literacy learning, in particular in how they recognized multiple perspectives, how they envisioned discourse in other aspects of critical literacy, and how they engaged in learning for critical literacy. This study raises implications for the use of CDA for critical literacy and professional learning, and the use of short texts for CDA. This study also points to the value of focusing on tensions as sites for professional learning

Junior teachers\u27 perspectives of critical literacy.

This study examines the perspectives of critical literacy of five junior grades teachers. Lewison, Flint, and Van Sluys\u27 (2003) four dimensions of critical literacy provided a framework for examining teacher beliefs and practices. From questionnaires and in-depth interviews, this case study found that there are gaps in teachers\u27 understanding, and teaching of critical literacy. These teachers teach students to disrupt the commonplace and examine multiple viewpoints, but they do not include focus on sociopolitical issues and action oriented strategies that promote social justice. The findings from this case study suggest that teachers need more information to develop their understanding of what critical literacy is and how it might be taught in junior classrooms. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2005 .W56. Source: Masters Abstracts International, Volume: 44-03, page: 1118. Thesis (M.Ed.)--University of Windsor (Canada), 2005

Attosecond Spectroscopy Probing Electron Correlation Dynamics

Electrons are the driving force behind every chemical reaction. The exchange, ionization, or even relaxation of electrons is behind every bond broken or formed. According to the Bohr model of the atom, it takes an electron 150 as to orbit a proton[6]. With this as a unit time scale for an electron, it is clear that a pulse duration of several femtoseconds will not be sufficient to understanding electron dynamics. Our work demonstrates both technical and scientific achievements that push the boundaries of attosecond dynamics. TDSE studies show that amplification the yield of high harmonic generation (HHG) may be possible with transverse confinement of the electron. XUV-pump-XUV-probe shows that the yield of APT train can be sufficient for 2-photon double ionization studies. A zero dead-time detection system allows for the measurement of state-resolved double ionization for the first time. Exploiting attosecond angular streaking[7] probes sequential and non-sequential double ionization via electron-electron correlations with attosecond time resolution. Finally, using recoil frame momentum correlation, the fast dissociation of CH3I reveals important orbital ionization dynamics of non-dissociative & dissociative, single & double ionization

Meadow brown (Maniola jurtina) and marbled white (Melanargia galathea) butterfly populations on two managed grasslands in Devon, UK: Implications for conservation

This paper reports on the effects of a management regime on two grassland sites in an agricultural landscape by using butterflies as indicators over a six-year period. This paper investigates what effects the management has had on two groups of phytophagous butterflies; habitat generalists (polyphagous) and habitat specialists (oligophagous). It identifies two species to study, the meadow brown Maniola jurtina and marbled white Melanargia galathea. The study was conducted in Devon, UK in 2007. Butterfly and plant communities were studied by transect counts on two differently managed grassland sites (Site A: 8 ha and Site B: 4.04 ha). A total of 27 butterfly species were recorded. In regression analysis, the number of butterflies at site A had increased significantly over the six study years (P < 0.05). Generalist butterflies showed a significant increase (P < 0.05) and so did the specialist species (P = < 0.05). The numbers of individual generalist and specialist species showed no significant difference. Meadow brown showed an erratic increase in numbers over the six study years with no significance and marbled white has increased significantly (P < 0.05). The comparison between Site A and Site B showed that there was a significant difference between meadow brown populations (P < 0.05) and marbled whites were present at Site A and absent from Site B. Plant diversity was significantly different from each year studied (P < 0.001) and had decreased at Site A between 2002 and 2007. Plant diversity was significantly different at Site A and Site B (P < 0.001). Significant increases of butterfly populations were found at the sample site A due to a change in the management of the grassland. Habitat specialists were more affected by increasing grassland coverage (reduced heterogeneity) than habitat generalists. The goal therefore is to see a much more diverse landscape with habitat corridors linking important habitats and where farmers and landowners are striking a balance with intensive agriculture and thus conserving species diversity. The development of studies into the long-term effects of rough grassland sites on butterfly diversity is needed in the near future, to enable conservationists, government bodies and the landowners themselves to implement a landscape scale conservation scheme

Striving for transparent and credible research: practical guidelines for behavioral ecologists

Science is meant to be the systematic and objective study of the world but evidence suggests that scientific practices are sometimes falling short of this expectation. In this invited idea, we argue that any failure to conduct research according to a documented plan (lack of reliability) and/or any failure to ensure that reconducting the same project would provide the same finding (lack of reproducibility), will result in a low probability of independent studies reaching the same outcome (lack of replicability). After outlining the challenges facing behavioral ecology and science more broadly and incorporating advice from international organizations such as the Center for Open Science (COS), we present clear guidelines and tutorials on what we think open practices represent for behavioral ecologists. In addition, we indicate some of the currently most appropriate and freely available tools for adopting these practices. Finally, we suggest that all journals in our field, such as Behavioral Ecology, give additional weight to transparent studies and therefore provide greater incentives to align our scientific practices to our scientific values. Overall, we argue that producing demonstrably credible science is now fully achievable for the benefit of each researcher individually and for our community as a whole

Inclusion of Youths with Disabilities in 4-H: A Scoping Literature Review

The Journal of Extension serves as a conduit for the dissemination of current research and practices within Extension and 4-H. We conducted a review of Journal of Extension articles published since passage of the Americans with Disabilities Act of 1990. Our purpose was to determine what practices, programs, and studies have occurred regarding inclusion in 4-H of youths with disabilities or special health care needs. The review resulted in detailed examination of 16 articles and revealed information about Extension professionals\u27 attitudes toward inclusion, strategies and program approaches related to inclusion, and specific areas that need to be addressed further to increase inclusion

Uji aktivitas antihiperglikemia ekstrak batang Uncaria gambir (W.Hunter) Roxb. pada tikus diabetes

This study aimed to prove the antihyperglycemic activity of the ethanol extract of bajakah Tampala stem (Uncaria gambir (W.Hunter) Roxb.) in rats induced by streptozotocin. The research was conducted experimentally using a true experiment posttest-only control group design. bajakah Tampala extract was extracted by maceration method using 96% ethanol solvent. The extract was made at 50mg/kgBB, 75mg/KgBB, and 100mg/KgBB in diabetic rats. The decrease in blood glucose levels of the negative control (27.27%) in this treatment was lower than that of glibenclamide (35.12%). The most significant decrease in blood glucose levels was achieved by 100 mg/kg BW, which was 44.85%. The treatment of Bajakah ethanol extract at various dose levels at the end of the observation showed a decrease in blood glucose levels but was not significantly different (p &gt; 0.05). The results of this study did not show a significantly different decrease in blood glucose levels.    This study aimed to prove the antihyperglycemic activity of the ethanol extract of bajakah Tampala stem (Uncaria gambir (W.Hunter) Roxb.) in rats induced by streptozotocin. The research was conducted experimentally using a true experiment posttest-only control group design. bajakah Tampala extract was extracted by maceration method using 96% ethanol solvent. The extract was made at 50mg/kgBB, 75mg/KgBB, and 100mg/KgBB in diabetic rats. The decrease in blood glucose levels of the negative control (27.27%) in this treatment was lower than that of glibenclamide (35.12%). The most significant decrease in blood glucose levels was achieved by 100 mg/kg BW, which was 44.85%. The treatment of Bajakah ethanol extract at various dose levels at the end of the observation showed a decrease in blood glucose levels but was not significantly different (p &gt; 0.05). The results of this study did not show a significantly different decrease in blood glucose levels.