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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.
241

Gathering, translating, enacting : a study of interdisciplinary research and development practices in Technology Enhanced Learning

Rimpiläinen, Sanna K. January 2012 (has links)
This is an ethnographic case-study of research and development practices taking place in an interdisciplinary project between education and computer sciences. The Ensemble-project, part of the Technology Enhanced Learning programme (2008-12), has studied case-based learning in a number of diverse settings in Higher Education, working to develop semantic technologies for supporting that learning. Focussing on one of the six research settings, the discipline of archaeology, the current study has had three purposes. By opening up to scrutiny the practices of research and development, it has firstly sought to understand how a shared research question is answered in practice when divergent research approaches are brought to bear upon it. Secondly, the study has followed the emergence of a piece of semantic technology through these practices. The third aim has been to assess the advantages and disadvantages of Actor-Network Theory (ANT) in studying unfolding, open-ended processes in real time. Through critical ethnographic participation, multiple ethnographic research methods, and by drawing on ANT as theoretical practice, the study has shown the precarious and unpredictable nature of research and development work, the political nature of research methods and how multiple realities can be produced using them, and the need for technology development to flexibly respond to changing circumstances. We have also seen the mutual adoption and extension of practices by the two strands of the project into each others’ domains, and how interdisciplinary tensions resolved, while they did not disappear, through pragmatic changes within the project. The study contributes to the interdisciplinary fields of Science and Technology Studies (STS) where studies on the ‘soft sciences’, such as education, are few, and a new field of Studies in Social Science and Humanities (SSH) which is emerging alongside and from within the STS. Interdisciplinary endeavours between fields pertaining largely to the natural and the social sciences respectively have not been studied commonly within either field.
242

Physical science activities and skills development in the school curriculum of Namibia

Mkandawire, Myness 08 1900 (has links)
Grade 12 learners in one Namibian secondary school participated in a study of science process skills implied in their International General Certificate of Secondary Education (IGCSE) physical science syllabus. The study aimed at finding out learners’ ability to identify science process skills in their physical science syllabus, criteria used to identify skills and whether any relationship existed between learners’ achievement in performing skills and learners’ ability in identifying the skills. Four physical science syllabus topics were taught. Learners performed and identified science process skills in learning and assessment tasks. A One Group Pretest-Posttest research design was used in a combined qualitative and quantitative research method. Data revealed that learners identified science process skills. Science processes performed during learning experiences were used as criteria to confirm presence of the skills. Learners’ achievement increased in performing and identifying science process skills after intervention activities. There seemed no relationship between learners’ achievement in performing and learners’ ability in identifying science process skills. / Science and Technology Education / M. Ed. (Natural Science Education)
243

[en] EVOCATIVE METHODOLOGY FOR CAUSAL MAPPING AND ITS PERSPECTIVE IN THE OPERATIONS MANAGEMENT WITH INTERNET-BASED APPLICATIONS FOR SUPPLY CHAIN MANAGEMENT AND SERVICE MANAGEMENT / [pt] METODOLOGIA EVOCATIVA PARA MAPEAMENTO CAUSAL E SUA PERSPECTIVA NA GERÊNCIA DE OPERAÇÕES COM APLICAÇÕES VIA INTERNET EM GESTÃO DA CADEIA DE SUPRIMENTO E ADMINISTRAÇÃO DE SERVIÇOS

25 August 2004 (has links)
[pt] A compreensão dos atuais processos produtivos é essencial neste momento em que o conhecimento tornou-se um importante gerador de valor. Uma visão holística dos conhecimentos que estão disseminados, de forma dispersa, entre profissionais, consultores e acadêmicos é necessária para a síntese de novas teorias da produção. Pesquisadores de gerência de operações freqüentemente usam mapeamento causal como um mecanismo para construir e comunicar teorias, particularmente em suporte à pesquisa empírica. As abordagens mais usuais para capturar dados cognitivos para um mapa causal são brainstorming e entrevistas, os quais exigem muito tempo e apresentam um significativo custo em sua implementação. Esta tese visa gerar uma metodologia (Metodologia Evocativa para Mapeamento Causal - ECMM) voltada para aplicação em pesquisa sobre gerência de operações para coletar e estruturar dados disseminados de forma desagregada, como conhecimento e experiência profissional e acadêmica, contidos nas opiniões de um grande número de especialistas dispersos demograficamente e geograficamente. Isto é alcançado evocando opiniões, codificando-as em variáveis e reduzindo o grupo em conceitos e relações. Tem-se uma especial preocupação em conseguir este objetivo em tempo factível e com baixo custo. A coleta de dados é assíncrona, via Internet, possui dois ou três turnos (à semelhança do método Delfos). A análise de dados usa codificação, técnica de grupamento hierárquica e escalamento multidimensional para identificar conceitos na forma de mapas cognitivos. A ECMM foi ilustrada com aplicações que demonstram sua viabilidade. Aplicou-se nas áreas de gestão da cadeia de suprimento (SCM) e administração de serviços (SM) com a participação de aproximadamente 1.300 respondentes de empresas e universidades de quase 100 países. Dentre os desdobramentos para pesquisas futuras propõe-se aplicar nas áreas de ECMM em SCM e SM visando a uni-las em um tema: gestão da cadeia de suprimento de serviços. / [en] The understanding of the present productive processes is essential at this moment when knowledge became an important value creator. A holistic vision of the pieces of knowledge that are spread out and dispersed among practitioners, consultants and academics is necessary for the synthesis of new theories of production. Operations management researchers often use causal mapping as a key tool for building and communicating theory, particularly in support of empirical research. The widely accepted approaches for capturing cognitive data for a causal map are informal brainstorming and interviews, which require a time- consuming and significant cost of implementation. This dissertation aims at creating a methodology (Evocative Causal Mapping Methodology - ECMM) intended for use in operations management research for collecting and structuring dispersed data spread out as practical and research knowledge, and experience contained in the opinions of a large number of specialists demographically and geographically scattered. This is accomplished by evoking opinions, encoding them into variables and reducing the resulting set to concepts and relationships. A special concern is to achieve this goal in a feasible time and cost- efficient way. ECMM consists of two or three round, Delphi- like, Internet-based asynchronous data collection, and a data analysis that uses a coding panel of experts, hierarchical cluster analysis and multidimensional scaling for identifying concepts on cognitive map formats. Applications illustrate ECMM and demonstrate its feasibility. They were developed on supply chain management (SCM) and service management (SM) involving about 1,300 respondents of companies and universities of about 100 countries. Among possible unfolding future studies, this dissertation proposes to apply ECMM in SCM and SM aiming at unifying them into a single topic: service supply chain management.
244

Teličnost a skalárnost deadjektivních sloves v češtině / Telicity and scalarity of deadjectival verbs in Czech

Lehečková, Eva January 2011 (has links)
The dissertation deals with semantic relations between adjectives and deadjectival verbs in Czech. It focuses on the question how the property scale conveyed by adjectives is encoded in the semantics of deadjectival verbs. After the first chapter which presents the topic of the dissertation, in the second chapter, I describe the theoretical and methodological context of contemporary linguistics from a broader perspective in order to relate the theoretical and methodological procedures present in this paper to the current linguistic development. The third chapter pursues the semantics of adjectives in Czech and various approaches to their classification. It presents a scalar classification of adjectives according to which adjectives denote a scale of some property, i.e. an ordered set of degrees along a dimension. With support of empirical research (based on a questionnaire survey and corpus data) I show that it is possible to implement the scalar model into the description of Czech adjectives. This approach states that adjectives are one of many means in language that serve to express measurement (and attribute it to objects and individuals). At the end of the chapter, I propose a classification of Czech adjectives and generalize prototypical semantics of adjectival classes by vector constructions...
245

Deep Ocean Vehicle Applications and Modifications

Arm, Nichole "Nikki" T 01 December 2023 (has links) (PDF)
This project had two primary goals: (1) to explore opportunities to further a deep-ocean vehicle’s reach using alternative pressure spheres, and (2) to implement an existing deep-ocean vehicle (lander) in active scientific research. I gained a greater understanding of the limitations and design choices made for existing pressure spheres using Finite Element Analysis (FEA). My simplified FEA model predicted sphere failure for the existing 30% Fiber Glass 70% Nylon injection molded spheres at an external pressure of 3,954psi or 2,690m ocean-depth (only a 7.38% error compared to the tested minimum failure depth), so I determined it a valid model. I also explored alternative designs and materials that could be used for pressure spheres in deep-sea applications. Existing pressure sphere models filled with an incompressible fluid failed at 12,670psi or 8,621m ocean-depth - over three times the depth of the same sphere filled with air. Next, I varied the sphere thickness of existing spheres to determine its impact on depth rating. While the increased thickness did provide an increase in depth rating, there were diminishing returns as the sphere was made thicker. I deemed both of these design options infeasible for our application. To consider the use of laminated composite spheres, the addition of an equatorial ring was required to manufacture O-ring seals safely and reliably. A simple cylindrical equatorial ring model using a stainless-steel ring had a predicted failure at 3,017psi or 2,053m ocean-depth. While this model predicted failure at 637m shallower than the sphere without the ring, it was the only ring material tested to reach the rated depth for the existing pressure spheres (2km), so I concluded stainless-steel is the best ring material. A spherical stainless-steel equatorial ring design was then analyzed which predicted failure at 3,915psi or 2,664m ocean-depth – only 8.3% less than the original sphere with no ring. Because of its successful performance and near identical results to the original model, I determined a stainless-steel spherical equatorial ring is the best option for laminated composite sphere sealing. Finally, I analyzed three different kinds of laminated composite pressure spheres: two carbon fiber and one fiber glass. Each laminate was designed to be quasi-isotropic and as close to 0.8” thick as possible to keep it consistent with the original sphere design. The sphere made of 584 Carbon Fiber with a lay-up of: [[-45/45/0/90]6]s was found to predict failure at 10,000psi or 6,804m ocean-depth, more than 2.5 times that of the original sphere. Next, a model made of 282 Carbon Fiber with a lay-up of: [[-45/45/0/90]11]s predicted failure at 9,242psi or 6,289m ocean-depth – more than 2.3 times as deep as the original pressure spheres. Lastly, a sphere of 7781 Fiber Glass with a lay-up of: [[-45/45/0/90]11]s predicted failure at 6,630psi or 4,511m ocean-depth – about two-thirds the depth of the 584 Carbon Fiber composite, but more than 1.6 times the depth of the original sphere. While real-life applications of these materials would include design modifications and manufacturing imperfections which would lower their maximum depth rating, these results are highly encouraging and show that all three materials could be viable options for future production. Additionally, through partnership with Dr. Crow White and his marine science undergraduate students, I completed numerous deployments for a Before and After Controlled Impact (BACI) study on the area of the proposed windfarm off the coast of Morro Bay, CA. Many modifications were made to the existing lander which enabled it to successfully be implemented in these studies including a new bait containment unit, light color filters, a GPS tracking device, and a large vessel recovery device. A total of 5 pier deployments and 3 boat deployments were conducted by my team over the course of 6-months. Planning for these deployments included accounting for budgeting, weather, permitting, and multi-organizational logistics while working with both NOAA and the Cal Poly marine operations staff.
246

Moisture effects on visible near-infrared and mid-infrared soil spectra and strategies to mitigate the impact for predictive modeling

Silva, Francis Hettige Chamika Anuradha 08 December 2023 (has links) (PDF)
Instrumental disparities and soil moisture are two of the key limitations in implementing spectroscopic techniques in the field. This study sought to address these challenges through two objectives. The first objective was to assess Visible-near infrared (VisNIR) and mid-infrared (MIR) spectroscopic approaches and explore the feasibility of transferring calibration models between laboratory and portable spectrometers. The second objective addressed the challenge of soil moisture and its impact on spectra. The portable spectrometers demonstrated comparable performance to their laboratory-based counterparts in both regions. Spiking with extra-weight, was the most effective calibration transfer method eliminating disparities between instruments. The samples were rewetted under nine controlled conditions for the moisture study. Results showed that spiking with extra weights significantly outperformed other techniques and model enhancement was insensitive to the moisture contents. Findings of this study will be helpful for development and deployment of in situ sensors to enable field implementation of spectroscopy.
247

GTA Preparation as Mentoring and Professional Development in Master's Programs in English and Writing Studies

Kailyn Shartel Hall (19201078) 23 July 2024 (has links)
<p dir="ltr">Historically, teaching first-year composition has been integral to graduate education in English and writing studies (Latterell, 1996). However, as best practices for teaching writing evolve, so do practices for training graduate students to teach it. Graduate instructor training (GIT) now encompasses not only writing pedagogy education (WPE), but also professional development and mentoring for careers both in and outside of academia. To date, research has focused on GIT programs sited at institutions that house doctoral programs, leaving out most master’s-granting institutions, even though they are far more numerous and serve many students. These institutions serve student populations with varied career goals, especially now as the purpose of a master’s degree in English and writing studies is evolving (Strain & Potter, 2016). </p><p dir="ltr">I conducted a three-phase study designed to highlight graduate instructor training programs for first-year composition at master’s-granting institutions in the United States. In my first phase, I developed a database of all master’s-granting institutions with English and writing studies programs (476 institutions) utilizing NCES, Carnegie Classification, and publicly available website data. I then surveyed writing program administrators (WPAs) and other faculty in the programs (n=41) that employed graduate student instructors (GSIs), focusing on program conditions, the first-year composition course, and the responsibilities of GSIs. In phase three, I conducted interviews with faculty (n=13) to gain more insight on curricular and administrative choices within their institutional contexts. My results show that faculty design curricula, training, and mentoring prioritizing students’ needs. WPE serves as pedagogical preparation and as a site of disciplinary enculturation. Participants share a desire for more resources that focus on designing curricula and programs within limited institutional resources. Additionally, as a discipline we need more comprehensive methods for documenting programmatic practices.</p>
248

TIM/TAM Receptors: A Potential Biomarker for Predicting Sensitivity to Zika Virus-Induced Oncolysis in Non-Small Cell Lung Cancers

Somasekar, Shankari 01 January 2024 (has links) (PDF)
Non-small cell lung cancers (NSCLC) constitute 80-85% of lung cancers and are the leading cause of cancer-related deaths globally. The most common cause is prolonged smoking. Current treatment options for NSCLC include surgery, radiation, chemotherapy, targeted drug therapy, and immunotherapy. Although these medications are effective in the short term, patients often face issues of drug resistance and debilitating side effects with prolonged use. Currently, the use of Zika virus (ZIKV) is being researched as a possible alternative treatment for cancer, which minimizes side effects and the risk of drug resistance. TIM/TAM proteins are identified as the putative ZIKV receptors on the surface of human cells that mediate viral entry through apoptotic mimicry. Once engulfed, the virus can hijack the host cell’s machinery to replicate and propagate the infection. Previous research has shown the potential of using Zika virus as an oncolytic agent in glioblastoma and neuroblastoma cell lines. The success of Zika-induced oncolysis in these cancers opens doors for expanding into other cancers, including NSCLC. Infection of six diverse NSCLC cell lines with ZIKV revealed that three cell lines were sensitive to ZIKV-induced oncolysis while the remaining were resistant. Transcriptome data analysis of TIM/TAM and CD24 mRNA expression levels were compared between ZIKV-sensitive and resistant cell lines, revealing AXL and TIM-1 as potential players in increasing or decreasing ZIKV infection. High AXL (TAM) expression correlated with increased sensitivity to ZIKV, while high TIM-1 (TIM) expression correlated with increased resistance. Experiments with AXL silencing in ZIKV-sensitive cell lines provided evidence of the role of AXL in increasing ZIKV sensitivity. Although further studies with TIM-1 must be done to determine its role in conferring resistance, AXL and TIM-1 have the potential to be biomarkers in predicting tumor sensitivity to ZIKV-induced oncolytic therapy.
249

In search of the understanding of the Old Testament in Africa : the case of the Lemba

Le Roux, M. 11 1900 (has links)
This project seeks to determine, to what extent the culture of early Israel (1250-1000 BC) is similar to African cultures, more specifically, to that of the Lemba. However, a comparison between the cultures of early Israel and those of certain African tribes is not the primary objective in this case. This project is neither an anthropological study nor does it intend to mainly focus on the Lemba as such -though this may appear to be the case. This endeavour primarily fits into the ambit of Old Testament Studies. The investigation into the Lemba is meant to be subsidiary to the point of contingence between their culture and Old Testament customs and traditions, and how this information affects the interpretation of the Old Testament and its teaching in Africa. A number of comparisons between the early Israelite religion as reflected in the Old Testament and the Lemba are drawn. Though the qualitative research (inductive approach) is employed in the field work, the greatest part of the data on religious perspectives and practices is mediated by the theory of a phenomenological approach as advocated by Ninian Smart on matters of experience, mythology, ritual, and ethical/judicial dimensions. Therefore, the approach is also deductive. The Lemba is a very specific group with claims about Israelite/Judaic origins. Their early departure from Israel (according to them ca 586 BC) can mean that there are remnants of a very ancient type oflsraelite religion, now valuable when juxtaposed to that of early Israel. This study takes Lemba traditions seriously, but finally does not verify or falsify Lemba claims - but the outcomes in this thesis may take this debate a step further. Their claims make them special and extremely interesting to study from the point of view of oral cultures. Their oral culture is constitutive of their world-view and self-understanding or identity. It incorporates the role of oral traditions, history and historiography and parallels are drawn between orality in early Israelite and Lemba religions. The reciprocity between orality and inscripturation of traditions, yielding valuable information on what may have happened in the developent of traditions in Israel, are also attended to in this project. Nevertheless, this project is primarily a search for the understanding and relevance of the Old Testament in Afiica and is, therefore, a selective and not an exhaustive comparison between the Lemba and early Israel. And so, taking cognisance of the hermeneutic of contextualisation in Africa in particular, a teaching module syllabus for Old Testament Studies is developed, of which the very strands of religion among the Lemba and early Israel are constitutive for teaching Old Testament Studies in present-day African cultures (and perhaps elsewhere). / Biblical and Ancient Studies / D. Litt. et Phil. (Biblical Studies)
250

Experiences of intimate partner violence and the health needs of women living in urban slums in Kampala, Uganda

Shumba, Constance Sibongile 11 1900 (has links)
Text in English / Intimate Partner Violence (IPV) is a major problem among women of child-bearing age in Uganda. This study explored the IPV experiences of women living in urban slums and their health needs in order to assist in developing strategies to prevent and respond to IPV. This was a cross-sectional explanatory study using a mixed methods approach among women aged 20-45 years in Kabalagala slums, Kampala, Uganda. The quantitative survey data was collected using a structured questionnaire while qualitative data was collected using in-depth interviews. Quantitative data were collected from a random sample of 372 women and qualitative data from a purposive sample of 48 women with IPV experiences. The quantitative data was analysed using STATA (version 11), and the qualitative data was coded and analysed manually into thematic content. The study revealed a high overall lifetime prevalence of IPV. The different IPV forms prevalent in the study population included psychological (99.7%), economic (93%), physical (92%) and sexual (88%). Physical violence in the last one year was 91%. The qualitative findings revealed the manifestations of IPV in this context. Furthermore, the physical and psychological health impacts of IPV included but were not limited to injuries; chronic pain and complications; HIV infection; low self-esteem; stress and fear of death, and loss of relationships. The researcher proposed three strategies to prevent and respond to IPV, namely implementing economic empowerment and poverty reduction programmes for women; strengthening the legal and justice system to respond appropriately to the problem of IPV, and improving the social and institutional support including training of health workers to prevent and respond to IPV. The proposed regulation of substance and alcohol use would also contribute to reducing IPV prevalence and scaling-up the response. / Health Studies / D. Litt. et Phil. (Health Studies)

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