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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.
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The relationship between school climate and faculty trust: An exploration across elementary schools in ShanghaiZhang, Li 01 January 2014 (has links)
This study was a non-experimental research which has been conducted in Shanghai, China. It aims to explore the relationship between the Shanghai elementary school climate and the level of faculty trust as well as to investigate whether the Shanghai elementary school climate can predict the development of faculty trust. Thirty elementary schools of 726 teachers in Jiading District of Shanghai have participated in this study. Each teacher completed a questionnaire with two measurements: School Climate Index (SCI) and Omnibus Trust Scale (OTS). Both have been translated, revised and tested for reliability and validity in a pilot study in order to better and more accurately measure school climate and faculty trust of the Chinese elementary schools in Shanghai. The criterion variable, faculty trust, was measured from three dimensions: faculty trust in principal, faculty trust in colleagues and faculty trust in clients (parents and students). The predictor variable is the Chinese elementary school climate which has three constructs: collegial leadership, teacher professionalism and academic press. The control variables are school types and faculty's employment type. Results of this study indicated that faculty trust is positively related to all dimensions of Chinese elementary school climate. Despite of different school types and different faculty employment types, each kind of faculty trust has the same set of school climate predators.
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Entre el espacio público y el no-lugar: implicancias de la implementación de los nuevos sistemas de transporte en las formas de habitar los paraderosPonce Romero, César Gabriel 15 January 2021 (has links)
En la última década, la gestión pública de la ciudad ha retomado la
planificación del transporte implementando, entre otras medidas, corredores
exclusivos y complementarios para ómnibus de servicio municipal. En este
contexto, se hace relevante identificar cómo las nuevas modalidades influyen en
la vida cotidiana de los ciudadanos no sólo en sus ritmos de desplazamiento,
sino en las formas de acceso a estos servicios. Las innovaciones en el sistema
de transporte no se restringen a la circulación vial, sino que deberían suponer
una nueva forma de relacionar la vía con el espacio público a través de los
paraderos. Por ello, la presente investigación analiza las formas de habitar los
paraderos, que constituyen espacios públicos de intersticio entre el transporte y
la ciudad.
Los casos de estudio son los paraderos de dos importantes avenidas de la
ciudad. Por un lado, Javier Prado, donde opera uno de los corredores
complementarios del nuevo sistema de transporte; por otro lado, Canadá, por
donde circulan líneas de transporte tradicional1. La organización de la
investigación tiene tres etapas. En primer lugar, se describen las características
espaciales de los paraderos; en segundo lugar, las características y perfiles de
los actores sociales de estancia permanente en ellos; en tercer lugar, se procede
al análisis de las formas de habitar los paraderos por parte del conjunto de
trabajadores ambulantes vinculados a ese lugar. Los hallazgos muestran que las
dimensiones de los paraderos se constituyen más allá de su dimensión física
dadas las diversas formas de habitar existentes. Sobre la comparación del
habitar vinculado a los paraderos, existen diferencias entre los dos sistemas de
transporte, presentando formas más complejas del habitar el espacio público en
el caso de los paraderos del sistema tradicional.
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Identification of common and unique stress responsive genes of Arabidopsis thaliana under different abiotic stress through RNA-Seq meta-analysisAkter, Shamima 06 February 2018 (has links)
Abiotic stress is a major constraint for crop productivity worldwide. To better understand the common biological mechanisms of abiotic stress responses in plants, we performed meta-analysis of 652 samples of RNA sequencing (RNA-Seq) data from 43 published abiotic stress experiments in Arabidopsis thaliana. These samples were categorized into eight different abiotic stresses including drought, heat, cold, salt, light and wounding. We developed a multi-step computational pipeline, which performs data downloading, preprocessing, read mapping, read counting and differential expression analyses for RNA-Seq data. We found that 5729 and 5062 genes are induced or repressed by only one type of abiotic stresses. There are only 18 and 12 genes that are induced or repressed by all stresses. The commonly induced genes are related to gene expression regulation by stress hormone abscisic acid. The commonly repressed genes are related to reduced growth and chloroplast activities. We compared stress responsive genes between any two types of stresses and found that heat and cold regulate similar set of genes. We also found that high light affects different set of genes than blue light and red light. Interestingly, ABA regulated genes are different from those regulated by other stresses. Finally, we found that membrane related genes are repressed by ABA, heat, cold and wounding but are up regulated by blue light and red light. The results from this work will be used to further characterize the gene regulatory networks underlying stress responsive genes in plants. / Master of Science / Abiotic stress is a major constraint for crop productivity worldwide. To better understand the common biological mechanisms of abiotic stress responses in plants, we performed analysis of 652 samples of RNA sequencing data from 43 published abiotic stress experiments in Arabidopsis thaliana. These samples were collected from eight different abiotic stresses including drought, heat, cold, salt, light and wounding. We identified genes that were induced or repressed by each of these stresses. We found that 5729 and 5062 genes are induced or repressed by only one type of abiotic stresses. There are only 18 and 12 genes that are induced or repressed by all stresses. The commonly induced genes are related to gene expression regulation by stress hormone. The commonly repressed genes are related to reduced growth. We compared stress responsive genes between any two types of stresses and found that heat and cold regulate similar set of genes. We also found that high light affects different set of genes than blue light and red light. Finally, we found that membrane related genes are repressed by stress hormone, heat, cold and wounding but are up regulated by blue light and red light. The results from this work will be used to further characterize the gene regulations underlying stress responsive genes in plants.
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Probabilistic Models for Collecting, Analyzing, and Modeling Expression DataLe, Hai-Son Phuoc 01 May 2013 (has links)
Advances in genomics allow researchers to measure the complete set of transcripts in cells. These transcripts include messenger RNAs (which encode for proteins) and microRNAs, short RNAs that play an important regulatory role in cellular networks. While this data is a great resource for reconstructing the activity of networks in cells, it also presents several computational challenges. These challenges include the data collection stage which often results in incomplete and noisy measurement, developing methods to integrate several experiments within and across species, and designing methods that can use this data to map the interactions and networks that are activated in specific conditions. Novel and efficient algorithms are required to successfully address these challenges.
In this thesis, we present probabilistic models to address the set of challenges associated with expression data. First, we present a novel probabilistic error correction method for RNA-Seq reads. RNA-Seq generates large and comprehensive datasets that have revolutionized our ability to accurately recover the set of transcripts in cells. However, sequencing reads inevitably contain errors, which affect all downstream analyses. To address these problems, we develop an efficient hidden Markov modelbased error correction method for RNA-Seq data . Second, for the analysis of expression data across species, we develop clustering and distance function learning methods for querying large expression databases. The methods use a Dirichlet Process Mixture Model with latent matchings and infer soft assignments between genes in two species to allow comparison and clustering across species. Third, we introduce new probabilistic models to integrate expression and interaction data in order to predict targets and networks regulated by microRNAs.
Combined, the methods developed in this thesis provide a solution to the pipeline of expression analysis used by experimentalists when performing expression experiments.
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“Accumulation by Dispossession” by the Global Extractive Industry: The Case of CanadaKinuthia, Wanyee 13 November 2013 (has links)
This thesis draws on David Harvey’s concept of “accumulation by dispossession” and an international political economy (IPE) approach centred on the institutional arrangements and power structures that privilege certain actors and values, in order to critique current capitalist practices of primitive accumulation by the global corporate extractive industry. The thesis examines how accumulation by dispossession by the global extractive industry is facilitated by the “free entry” or “free mining” principle. It does so by focusing on Canada as a leader in the global extractive industry and the spread of this country’s mining laws to other countries – in other words, the transnationalisation of norms in the global extractive industry – so as to maintain a consistent and familiar operating environment for Canadian extractive companies. The transnationalisation of norms is further promoted by key international institutions such as the World Bank, which is also the world’s largest development lender and also plays a key role in shaping the regulations that govern natural resource extraction. The thesis briefly investigates some Canadian examples of resource extraction projects, in order to demonstrate the weaknesses of Canadian mining laws, particularly the lack of protection of landowners’ rights under the free entry system and the subsequent need for “free, prior and informed consent” (FPIC). The thesis also considers some of the challenges to the adoption and implementation of the right to FPIC. These challenges include embedded institutional structures like the free entry mining system, international political economy (IPE) as shaped by international institutions and powerful corporations, as well as concerns regarding ‘local’ power structures or the legitimacy of representatives of communities affected by extractive projects. The thesis concludes that in order for Canada to be truly recognized as a leader in the global extractive industry, it must establish legal norms domestically to ensure that Canadian mining companies and residents can be held accountable when there is evidence of environmental and/or human rights violations associated with the activities of Canadian mining companies abroad. The thesis also concludes that Canada needs to address underlying structural issues such as the free entry mining system and implement FPIC, in order to curb “accumulation by dispossession” by the extractive industry, both domestically and abroad.
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“Accumulation by Dispossession” by the Global Extractive Industry: The Case of CanadaKinuthia, Wanyee January 2013 (has links)
This thesis draws on David Harvey’s concept of “accumulation by dispossession” and an international political economy (IPE) approach centred on the institutional arrangements and power structures that privilege certain actors and values, in order to critique current capitalist practices of primitive accumulation by the global corporate extractive industry. The thesis examines how accumulation by dispossession by the global extractive industry is facilitated by the “free entry” or “free mining” principle. It does so by focusing on Canada as a leader in the global extractive industry and the spread of this country’s mining laws to other countries – in other words, the transnationalisation of norms in the global extractive industry – so as to maintain a consistent and familiar operating environment for Canadian extractive companies. The transnationalisation of norms is further promoted by key international institutions such as the World Bank, which is also the world’s largest development lender and also plays a key role in shaping the regulations that govern natural resource extraction. The thesis briefly investigates some Canadian examples of resource extraction projects, in order to demonstrate the weaknesses of Canadian mining laws, particularly the lack of protection of landowners’ rights under the free entry system and the subsequent need for “free, prior and informed consent” (FPIC). The thesis also considers some of the challenges to the adoption and implementation of the right to FPIC. These challenges include embedded institutional structures like the free entry mining system, international political economy (IPE) as shaped by international institutions and powerful corporations, as well as concerns regarding ‘local’ power structures or the legitimacy of representatives of communities affected by extractive projects. The thesis concludes that in order for Canada to be truly recognized as a leader in the global extractive industry, it must establish legal norms domestically to ensure that Canadian mining companies and residents can be held accountable when there is evidence of environmental and/or human rights violations associated with the activities of Canadian mining companies abroad. The thesis also concludes that Canada needs to address underlying structural issues such as the free entry mining system and implement FPIC, in order to curb “accumulation by dispossession” by the extractive industry, both domestically and abroad.
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