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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
201

A Nodal Ethnography of a (Be)coming Tattooed Body

Hilton, Krista 10 May 2017 (has links)
By exploring how my/a tattooed body functions as becoming through the concept of bodies without organs (BwO), this work pushes the edges of qualitative inquiry. Following St. Pierre’s call to deconstruct the concepts on which qualitative research is built, this inquiry troubles the I/we of authorship and linear meaning making as it examines the tattooed body functioning as becoming a BwO. The nodal ethnography is a Deleuzo-Guattarian-based methodological inquiry in which interruptions and layers of narrative are used to create spaces for conversation between my multinodes. The tattoos on my semipermeable corporeal flesh tell multilayered stories that are constantly moving and shifting, and I (re)make meaning of these stories within, amongst, and between the nodes that constitute this disorganized body while approaching the limits of a BwO, always in progress, becoming. There is no beginning or end, only a middle, made up of lines that can be read in any order, as linearity does not live here. The Laminar Express iPhone/iPad photography application allowed for the layering of images, text, and color to rupture and even to distort the lines of ink on my body as a plane of representation adds yet another collaborative space to have dialogue(s); thus offering endless possibilities for the nodes of my ethnography to be (re)connected and (re)produced. My tattooed body evokes response from my multiselves as well as from others; ergo, I invite the reader to become a co-collaborator of this nodal ethnography, and to take lines of flight with/in this experimental space of what may appear when tattoos/images/multinodes/selves and storied lines of inked/textured text collide with Deleuzo-Guattarian theory in exploring my tattooed skin as becoming a BwO.
202

Grade 11 learners' and teachers' conceptions of scientific inquiry in relation to instructional practices.

Dudu, Washington Takawira 30 September 2013 (has links)
This exploratory, descriptive and interpretive study investigated the interactions among learners’ conceptions of the nature of scientific inquiry (NOSI), teachers’ conceptions of NOSI and teacher instructional practices when teaching investigations in Physical Science. The participants were South Africa, Grade 11 learners (n= 167) and teachers (n=5), from five schools in the Johannesburg region of South Africa. The schools were conveniently and purposefully sampled. Learners’ and teachers’ conceptions on six NOSI tenets were investigated. These tenets are: difference between laws and theories; difference between observation and interpretation; there is no one method in science; accurate record keeping, peer review and replicability in science; socially and culturally embeddedness nature of scientific knowledge; and the role of human creativity and imagination in the development of scientific knowledge. Data on learners’ and teachers’ conceptions of the NOSI was obtained through; questionnaires, probes and interviews. Teacher instructional practices were determined using laboratory class observations, questionnaires, teacher and learner interviews, and analysis of instructional materials. The data was quantitatively analyzed using mainly, descriptive statistics, correlations, Regression Analysis and Multivariate Analysis of Variance (MANOVA). Qualitative data was analyzed using a combination of analytic induction and interpretive analysis. The results show that learners’ NOSI conceptions were inconsistent, fragmented and fluid, with the majority of the learners displaying naïve conceptions. Teachers were found to hold mixed NOSI conceptions ranging from static, empiricist-aligned to dynamic, constructivist-oriented. Teacher instructional practices were found to be a repertoire of contrasting methodological approaches lying along a continuum ranging from close-ended inquiry to open-ended inquiry. The study found the interactions between and among the investigated variables to be weak and not direct and simple, but complex and under the governance of a variety of factors in the instructional milieu. Curriculum and assessment demands were found to be major factors possibly responsible for weakening the interactions. For the investigated variables, it is posited that the interaction between variables is under the governance of both the context in which the instruction takes place and some factors already embedded in the teacher’s or learner’s conceptual ecology. Recommendations and implications for the practice of science education and future research are raised and discussed.
203

Investigating Lesotho junior secondary science teachers' perceptions and use of laboratory work.

Monare, Thulo Julius 09 November 2010 (has links)
This study investigated Lesotho junior secondary science teachers’ perceptions and use of laboratory work in teaching. Teaching is described as engagement in a relationship between a person called a teacher and another person called a student with the purpose of facilitating the student’s acquisition of content which the student previously lacked (Fenstermacher, 1986). Using the constructs of scientific inquiry and inquiry-based instruction and constructivism as theoretical lenses the study empirically explored the Junior School Science teachers’ perceptions of the aims of laboratory work and how the teachers used laboratory work in their teaching. At the centre, the investigation sought to understand whether there was any relationship between teachers’ perceptions of the aims of laboratory work and their use of laboratory work. The sample of the study consisted of fifty science teachers (n=50) conveniently selected from 12 schools in the Butha-Buthe district of Lesotho. Data were collected through closed and open ended questionnaires (n=50), semi-structured interviews (n=5), and laboratory lesson observations (n=2). Data were analyzed quantitatively using descriptive statistics and qualitatively using a combination of typological and interpretational analysis. The results show that as a group the sampled teachers held the view that the most important aim of laboratory work was to promote conceptual understanding. In their teaching, most of the sampled teachers use laboratory work to verify theory through largely verificationist, expository and non-inquiry laboratory instructional practices and strategies. The following barriers were reported by the teachers as limiting their use of inquiry oriented and student centered teaching strategies: limitations of resources; time constraints; large classes; pressure to complete the prescribed curriculum; safety issues; and preparations for external examinations. The results also suggest that the teachers’ seeing laboratory work as important for developing conceptual understanding is associated with their use of verificationistic teaching approaches. It is recommended that; Lesotho science curriculum be reviewed, and that teachers should participate in curriculum development to enhance successful implementation of inquiry instruction, professional development programmes be established, and the enactment of inquiry instruction be systematically monitored and evaluated. It is recommended that curriculum developers facilitate teachers’ transformation from expository to inquiry instruction.
204

Introducing the Cycle of Inquiry System: A Reflective Inquiry Practice for Early Childhood Teacher Development

Broderick, Jane Tingle, Hong, Seong Bock 01 January 2011 (has links)
The Cycle of Inquiry (COI) is a tool for emergent curriculum planning and for professional development of early childhood teachers and teacher education students. The COI includes a sequence of five organizational forms connecting analysis of documentation data with intentional planning for long-term emergent inquiry inspired by the Reggio Emilia Approach. The authors discuss and analyze the COI System through examination and analysis of the work of a student in a university early childhood teacher preparation program. Through this case study, the authors explore (1) whether a preservice teacher can learn to use the COI form-driven process to plan and facilitate emergent curriculum and (2) whether a mentor can scaffold and assess the development of an inservice or preservice teacher using the teacher’s COI documentation. The authors also describe ongoing research into use of the COI System and outline potential directions for future research.
205

Elementary Teachers' Definitions and Usage of Inquiry-Based Mathematics Instruction

Nunnally, Heather 01 January 2019 (has links)
Current educational leaders call for students to build his or her own mathematical understanding from experiences, coupled with feedback from peers, teachers, and themselves and gain a conceptual understanding of mathematics. Researchers agree that inquiry in the elementary mathematics classroom can help increase conceptual understanding. This case study focused on how elementary teachers define inquiry-based mathematics and implement it in their classrooms. Interviews, observations and lesson analysis were used to investigate what identities, relationships and activities look like in an elementary classroom that uses inquiry. All of the participants felt "problem solving" and "working collaboratively" were essential for inquiry but each teacher defined them differently. Questioning was also an important feature of inquiry according to the teachers. Professional development seemed to have a strong impact on why these teachers use inquiry in their classrooms. As far as the relationships necessary to teach using inquiry, teachers did not indicate that administrators’ nor peers’ support were necessary to continue using this type of pedagogy in their classrooms. The participants believed that including inquiry in mathematics was a best practice and continued to incorporate inquiry because they felt it allowed their students to gain a deeper understanding of mathematics. The local field of each teacher influenced the planning they did before the lesson and the activities they included in their inquiry instruction. The written plans of each participant differed greatly. The requirements of the district had an effect on how much detail the participants included in their planning documents. Also, whether they were planning for their entire grade level or just themselves influenced how much detail was included. Another aspect of the mathematics classroom that was influenced by the local field was including a software program, which is expected to be a part of students’ daily mathematics instruction. The various ways inquiry is carried out and how the local field influences this is important for educators at all levels to understand. This study has implications for teachers, administrators and teacher educators. Inquiry means a variety of things to elementary teachers within this study. If mathematics educator leaders, teachers and administrators want to infuse more inquiry into the classroom, the many ways it is carried out needs to be understood.
206

Elementary teachers' ideas about, planning for, and implementation of learner-directed and teacher-directed inquiry: a mixed methods study

Biggers, Mandy Sue 01 May 2013 (has links)
Using a framework for variations of classroom inquiry (National Research Council [NRC], 2000, p. 29), this study explored 40 inservice elementary teachers' planning, modification, and enactment of kit-based science curriculum materials. As part of the study, a new observation protocol was modified from an existing protocol (Practices of Science Observation Protocol [P-SOP]) to measure the amount of teacher direction in science inquiry lessons (Practices of Science Observation Protocol + Directedness [P-SOPd]). An embedded mixed methods design was employed to investigate four questions: 1. How valid and reliable is the P-SOPd? 2. In what ways do inservice elementary teachers adapt existing elementary science curriculum materials across the inquiry continuum? 3. What is the relationship between the overall quality of inquiry and variations of inquiry in elementary teachers' enacted science instruction? 4. How do inservice elementary teachers' ideas about the inquiry continuum influence their adaptation of elementary science curriculum materials? Each teacher chose three lessons from a science unit for video-recorded observation, and submitted lesson plans for the three lessons. Lesson plans and videos were scored using the P-SOPd. The scores were also compared between the two protocols to determine if a correlation existed between the level of inquiry (measured on the P-SOP) and the amount of teacher direction (measured on the P-SOPd). Findings indicated no significant differences between planned and enacted lessons for the amount of teacher direction, but a correlation existed between the level of inquiry and the amount of teacher direction. In effect, the elementary teachers taught their science curriculum materials with a high level of fidelity for both the features of inquiry and the amount of teacher direction. A smaller group of three case study teachers were followed for the school year to give a more in-depth explanation of the quantitative findings. Case study findings revealed that the teachers' science instruction was teacher-directed while their conceptions of inquiry were student-directed. This study contributes to existing research on preservice teachers' learning about the continuum (Biggers & Forbes, 2012) and inservice teachers' ideas about the five features of inquiry (Biggers & Forbes, in press).
207

Teaching with the End in Mind: A Teacher's Life History as a Legacy of Educational Leaders

Ward, Daryl Adam 31 October 2014 (has links)
The purpose of this study was to understand the life history of a female teacher by examining her beliefs about leaving a teaching legacy and by analyzing the narratives of four educational leaders as they reflect on the generative behaviors of this teacher. The research questions guiding this study were: (a) What elements of this teacher's life history contributed to creating a legacy of educational leaders? (b) What are the perspectives of the educational leaders impacted by this teacher as they relate to crafting an educational legacy? (c) How do the life stories of the teacher and educational leaders intersect to reveal narrative resonance - the ability of stories to interact in such a way that they influence other stories? A review of relevant literature examined legacy creation or generativity. In addition, this study critiqued scholarship that extends narrative research approaches, specifically, fictional research texts. Since fictional research products can be catalysts for reflection and discussion, the final chapter of this study is presented as a fictionalized research-narrative that emerged from analysis of the data. The data in this study included interview texts, participant artwork, reflections from the participant's journal, excerpts from the researcher's journal, and poetry written both by the participant and the researcher. The data were analyzed by using open and focused coding, employing the constant comparison process, and through artifact analysis. The data analysis of this qualitative study resulted in specific findings. First, the main participant demonstrated generative traits contributing to a legacy of educational leaders. Her compassion for all students, her passion for teaching/learning, her content knowledge, and her flexibility in the classroom all manifested themselves in the lives of the educational leaders participating in this study. Additionally, the narratives from the participant demonstrated narrative resonance, Stories, it seems, have their own legacies.
208

Aktieanalytikers rekommendationer:värdet av revideringar på de nordiska marknaderna / Stock Analysts’ Recommendations:The Value of Recommendation Revisions in the Nordic Markets

Hadziefendic, Adnan, Emborg, Oscar January 2010 (has links)
<p>Bakgrund: För att avgöra huruvida aktieanalytiker som grupp betraktat tillför värde för investerare måste frågan ställas om det är lönsamt att följa analytikernas konsensusrekommendationer. Ett problem med att följa dessa är att rekommendationerna som utgör konsensus kan förbli oförändrade under långa perioder vilket innebär att de vanligtvis blir mindre informativa med tiden. Studier som istället utvärderar värdet av reviderade rekommendationer har visat att det kan vara mer lönsamt att följa analytiker när de ändrar uppfattning om en aktie.</p><p>Syfte: Syftet med studien är att utvärdera revideringar av aktieanalytikers rekommendationer på den nordiska marknaden och att analysera investeringsstrategier baserade på dessa som tar hänsyn till transaktionskostnaders inverkan på avkastningen.</p><p>Genomförande: De reviderade rekommendationerna har utvärderats kvantitativt med data från Inquiry Financial för perioden 2006 – 2009. Vi konstruerar sex portföljer för varje studerad marknad, där de olika portföljerna består av upp- respektive nedgraderade aktier med olika innehavsperioder för att testa huruvida revideringarna kan sägas vara informativa.</p><p>Resultat: Resultaten visar att reviderade rekommendationer är informativa på flera av de studerade marknaderna, där aktiekurser fortsätter att stiga för uppgraderingar och sjunka för nedgraderingar flera månader efter att revideringen har skett. En investerare som agerade på revideringarna hade kunnat generera överavkastning i ett flertal utvärderade strategier innan justering för transaktionskostnader skett. När hänsyn tagits till transaktionskostnadernas inverkan genererar ingen strategi signifikant alfa, men resultaten indikerar ändå att det finns ett värde i att följa revideringarna.</p> / <p>Background: To determine whether or not stock analysts as a group add value for investors the question that should be asked is if it’s profitable to follow the analysts' consensus recommendations. A problem with following these is that the recommendations that enter into the consensus can remain unchanged for long periods which mean that they generally become less informative over time. Studies that instead evaluate recommendation revisions have shown that it can be more profitable to follow the analysts when they change their opinions regarding a stock.</p><p>Aim: The aim of this study is to evaluate analysts’ recommendation revisions in the Nordic markets and to analyze investment strategies based on these revisions that consider the impact of transaction costs.</p><p>Completion: The recommendation revisions have been evaluated quantitatively using data from Inquiry Financial for the period 2006 – 2009. We construct six portfolios for each market, where the portfolios consist of up- and downgraded stocks with different holding periods in order to determine how informative the revisions are.</p><p>Findings: We find that recommendation revisions are informative in several of the studied markets, where stock prices continue to drift upward for upgrades and downward for downgrades several months after the revision. An investor acting on these revisions would have been able to generate abnormal returns in a number of considered strategies, gross of transaction costs. When the impact of transaction costs is considered no strategy generates significant alpha due to the frequent rebalancing required, but the results nonetheless indicates that there is value in following the revisions.</p>
209

Aktieanalytikers rekommendationer:värdet av revideringar på de nordiska marknaderna / Stock Analysts’ Recommendations:The Value of Recommendation Revisions in the Nordic Markets

Hadziefendic, Adnan, Emborg, Oscar January 2010 (has links)
Bakgrund: För att avgöra huruvida aktieanalytiker som grupp betraktat tillför värde för investerare måste frågan ställas om det är lönsamt att följa analytikernas konsensusrekommendationer. Ett problem med att följa dessa är att rekommendationerna som utgör konsensus kan förbli oförändrade under långa perioder vilket innebär att de vanligtvis blir mindre informativa med tiden. Studier som istället utvärderar värdet av reviderade rekommendationer har visat att det kan vara mer lönsamt att följa analytiker när de ändrar uppfattning om en aktie. Syfte: Syftet med studien är att utvärdera revideringar av aktieanalytikers rekommendationer på den nordiska marknaden och att analysera investeringsstrategier baserade på dessa som tar hänsyn till transaktionskostnaders inverkan på avkastningen. Genomförande: De reviderade rekommendationerna har utvärderats kvantitativt med data från Inquiry Financial för perioden 2006 – 2009. Vi konstruerar sex portföljer för varje studerad marknad, där de olika portföljerna består av upp- respektive nedgraderade aktier med olika innehavsperioder för att testa huruvida revideringarna kan sägas vara informativa. Resultat: Resultaten visar att reviderade rekommendationer är informativa på flera av de studerade marknaderna, där aktiekurser fortsätter att stiga för uppgraderingar och sjunka för nedgraderingar flera månader efter att revideringen har skett. En investerare som agerade på revideringarna hade kunnat generera överavkastning i ett flertal utvärderade strategier innan justering för transaktionskostnader skett. När hänsyn tagits till transaktionskostnadernas inverkan genererar ingen strategi signifikant alfa, men resultaten indikerar ändå att det finns ett värde i att följa revideringarna. / Background: To determine whether or not stock analysts as a group add value for investors the question that should be asked is if it’s profitable to follow the analysts' consensus recommendations. A problem with following these is that the recommendations that enter into the consensus can remain unchanged for long periods which mean that they generally become less informative over time. Studies that instead evaluate recommendation revisions have shown that it can be more profitable to follow the analysts when they change their opinions regarding a stock. Aim: The aim of this study is to evaluate analysts’ recommendation revisions in the Nordic markets and to analyze investment strategies based on these revisions that consider the impact of transaction costs. Completion: The recommendation revisions have been evaluated quantitatively using data from Inquiry Financial for the period 2006 – 2009. We construct six portfolios for each market, where the portfolios consist of up- and downgraded stocks with different holding periods in order to determine how informative the revisions are. Findings: We find that recommendation revisions are informative in several of the studied markets, where stock prices continue to drift upward for upgrades and downward for downgrades several months after the revision. An investor acting on these revisions would have been able to generate abnormal returns in a number of considered strategies, gross of transaction costs. When the impact of transaction costs is considered no strategy generates significant alpha due to the frequent rebalancing required, but the results nonetheless indicates that there is value in following the revisions.
210

Examining The Impact of Calibrated Peer Review (CPR) on Student Writing Developed Through Web-Based Ecological Inquiry Projects

Robledo, Denise 2011 May 1900 (has links)
E-learning tools such as Calibrated Peer Review (CPR) have made writing assignments easier to implement and grade; however, we have limited knowledge of how CPR affects student scientific writing. Past CPR research has examined how CPR generated scores change across multiple CPR writing assignments for the purpose of reporting student learning gains. This study will not rely on CPR generated score data. This study (1) independently evaluated the impact of CPR on student writing of ecological inquiry report components using a grading criteria instrument and (2) explored how the revision process influenced the quality of ecological inquiry report components through text analysis. A web-based science inquiry project was implemented in a large (up to 500 students) introductory ecology course. Students observed grizzly bears at McNeil River Falls in Alaska using Bear Cam picture stills. They developed and tested hypotheses about grizzly bear spatial distribution and interactions and reported findings in individual ecological inquiry reports. Students submitted reports to CPR and anonymously reviewed three peer reports and self-assessed their own. Finally, students were given one-week following CPR to revise reports based on peer reviews and submit online. A 28-item grading criteria instrument (9 scales) was used to examine how students revised ecological inquiry reports post CPR. Eight paired t-tests were used to assess the pre-post CPR changes in scores for individual grading criteria scales or components. Cohen's d effect size was used to explore how achievement or performance level, ethnicity, gender and major influenced student text changes to ecological inquiry report components post CPR. Text analysis using a subset of 27 sample reports (pre-post CPR) assessed the amount and location of text changes and the impact of these revisions on the quality of ecological inquiry report components. Common errors in ecological inquiry report components post CPR were also analyzed. Results showed that CPR and revision significantly improved the scores related to the objective, sampling and discussion scales. Analyses using Cohen's d effect sizes illustrated interesting but inconsistent patterns related to the influence of student performance level, gender, ethnicity, and major on pre-post CPR score gains. Text analysis revealed the majority of helpful revisions were related to making the objective identifiable, reporting of sample size and discussion of study limitations and future questions raised by individual ecological inquiry projects. Text analysis shows three common reasons participants failed to meet grading criteria post CPR. Un-testable hypotheses, insufficient descriptions for sample selection, data analysis, variables collected and revisions of only easy grading criteria components. This study provided direct evidence of CPR's effects on student writing and provided a greater understanding of pattern of revision process following CPR.

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