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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.
181

[en] MATURITY MODEL FOR DISASTER RESPONSE OPERATIONS MANAGEMENT: A COMPARATIVE CASE STUDY OF FLOODING AND COVID-19 / [pt] MODELO DE MATURIDADE PARA GESTÃO DE OPERAÇÕES DE RESPOSTA A DESASTRES: UM ESTUDO DE CASO COMPARATIVO DE INUNDAÇÃO E COVID-19

HINGRED FERRAZ PEREIRA 25 September 2020 (has links)
[pt] As organizações que atuam em resposta a desastres buscam cada vez mais a eficiência na realização dos seus processos para que, assim, possam ser capazes de atender o maior número possível de pessoas afetadas. Neste sentido, o objetivo principal deste trabalho é propor um modelo de maturidade para avaliar operações de desastres e identificar estratégias que permitam a evolução da maturidade. Para este fim, a pesquisa é fundamentada em uma revisão sistemática da literatura, que identificou oito modelos para gestão de operações de desastres, e um estudo de caso. Com base na revisão sistemática da literatura é proposto o Modelo de Maturidade para Processos de Desastres. Como primeira validação, um estudo de caso foi conduzido na Defesa Civil do Estado do Rio de Janeiro, Brasil para avaliar a maturidade das operações de resposta em três situações distintas: Geral (Situação 1), um tipo de desastre recorrente na região - as inundações do norte e noroeste fluminense (Situação 2), e um desastre não recorrente - a pandemia de COVID-19 (Situação 3). Constatou-se que para as três situações analisadas a organização apresentou maturidade final igual a 4 (Aurora) com sinais de evolução para o estágio máximo (Apogeu). Além disso, por ser um tipo de desastre recorrente, o desastre da Situação 2 apresentou maiores semelhanças na realização dos processos de resposta a desastres comparados com a Situação Geral (1). / [en] Disaster response organizations are increasingly looking for efficiency in carrying out their processes so that they can be able to serve as many affected people as possible. In this sense, the main objective of this work is to propose a maturity model to assessment of disaster operations and identify strategies that allow the evolution of maturity. To this end, the research based on a systematic literature review, which identified eight models for disaster operations management, and a case study. The Maturity Model for Disaster Processes was proposed based on the systematic literature review. As a first validation, a case study was conducted at the Civil Defense of the State of Rio de Janeiro, Brazil to assess the maturity of the response operations. Three different situations in this case study were analyzed: General (Situation 1), a recurring disaster type in the region - the floods in the north and northwest of Rio de Janeiro (Situation 2), and a non-recurring disaster - the COVID-19 pandemic (Situation 3). It was found that, the organization reached final maturity stage 4 (Aurora) for the three situations analyzed, with signs of evolution to the maximum stage (Zenith). Also, as it is recurrent disaster type, disaster of the Situation 2 showed more significant similarities in carrying out disaster response processes compared to the General Situation (1).
182

[pt] DINÂMICA DE APRENDIZAGEM E TRAJETÓRIAS DE SUSTENTABILIDADE EM CADEIAS DE SUPRIMENTO / [en] LEARNING DYNAMIC AND SUSTAINABILITY TRAJECTORIES IN SUPPLY CHAINS

ALLAN MARTINS CORMACK 18 October 2022 (has links)
[pt] As cadeias de suprimento (CS) estão sendo cada vez mais pressionadas a implementar iniciativas para tornar o seu desempenho mais sustentável. Como exemplo, pode-se citar os desafios impostos pela transição energética para o setor de óleo e gás e suas CS. Orientar a CS em direção a sustentabilidade requer um esforço coordenado, integrado e colaborativo entre os múltiplos parceiros. Um fator crucial para evoluir a trajetória de sustentabilidade das CS é a aprendizagem que ocorre durante a implementação das iniciativas de sustentabilidade colaborativas. Entretanto, não há evidências suficientes na literatura sobre como e em que níveis o processo de aprendizagem ocorre, assim como, sobre suas características e forma de interação entre os parceiros. O objetivo da tese é aprofundar o entendimento sobre as características da dinâmica de aprendizagem e sua influência na trajetória de sustentabilidade nas CS. A tese utiliza os métodos de revisão sistemática da literatura e estudo de caso múltiplo. Como resultados principais, apresenta uma tipologia e framework teórico integrado sobre aprendizagem de sustentabilidade em CS e propõe uma abordagem baseada em processo para investigação empírica do fenômeno. A pesquisa foi conduzida em três grandes multinacionais internacionais e em suas CS atuantes no Brasil. Os resultados mostram que a trajetória de sustentabilidade da CS é cumulativa, recorrente e não-linear, resultante de sucessivas oportunidades de aprendizado emergentes das iniciativas de sustentabilidade colaborativas na CS. Valendo-se do raciocínio abdutivo, a tese fornece um primeiro passo na elaboração de teoria de sobre aprendizagem de sustentabilidade da CS e cunha o conceito de plasticidade da CS. / [en] Supply chains (CS) are pressured to implement initiatives to make their performance more sustainable. For example, the challenges imposed by the energy transition for the oil and gas sector and its SC stand out. Guide SC towards sustainability requires a coordinated, integrated, and collaborative effort between multiple partners. A crucial factor in evolving the sustainability trajectory of SC is the learning that takes place during the implementation of collaborative sustainability initiatives. However, there is not enough evidence in the literature about how and at what levels the learning process occurs, as well as about its characteristics and form of interaction between partners. The objective of the thesis is to deepen the understanding of the characteristics of the learning dynamics and their influence on the sustainability trajectory in the SC. The thesis uses the methods of systematic literature review and multiple case studies. As the main results, it presents a typology and integrated theoretical framework on SC sustainability learning and proposes a process-based approach for empirical investigation of the phenomenon. The research was conducted in three large international multinationals and in their SC operating in Brazil. The results show that SC s sustainability trajectory is cumulative, recurrent, and non-linear, resulting from successive learning opportunities emerging from collaborative sustainability initiatives at SC. Adopting abductive reasoning, the thesis provides a first step in the elaboration of a theory of learning about SC sustainability and coined the concept of SC plasticity.
183

Security Tools in DevSecOps : A Systematic Literature Review / Säkerhetsverktyg i DevSecOps : En systematisk litteraturöversikt

Martelleur, Joel, Hamza, Amina January 2022 (has links)
DevSecOps emerged to mitigate the challenges of integrating security into DevOps. DevOps have grown tremendously, leading to difficulties in integrating security tools in its development process while maintaining speed and agility. This study aims to investigate the security tools in DevSecOps and how they have been reported in previous literature. The main objective of this study is to provide a knowledge base concerning security tools in DevSecOps that can be used to mitigate challenges regarding the selection and use of security tools in the context of DevSecOps. A systematic literature review was adopted for the research. The study collected a total of  228 studies published between 2015 and 2022; fourteen of these papers were selected to be used for data extraction after conducting a thorough review protocol. This study has identified thirteen security tool categories used or recommended to be used in DevSecOps. These tools have been structured into seven phases of the development process and five security practices. Additionally, this study has identified twelve drawbacks and sixteen recommendations concerning the use of these security tools in DevSecOps.  The security tools categories, recommendations, and drawbacks identified in this study could potentially be used to facilitate the challenges of selecting and using security tools in DevSecOps and similar methodologies that rely on automation and delivering software frequently.
184

[en] ENVIRONMENTAL SUPPLY CHAIN RISK MANAGEMENT: FROM A SYSTEMATIC REVIEW TO A MULTIPLE CASE STUDY / [pt] GESTÃO DE RISCOS AMBIENTAIS EM CADEIAS DE SUPRIMENTOS: DE UMA REVISÃO SISTEMÁTICA A UM ESTUDO DE CASOS MÚLTIPLOS

FABIOLA NEGREIROS DE OLIVEIRA 31 March 2020 (has links)
[pt] O gerenciamento de riscos é um dos tópicos de pesquisa mais atraentes dentro do campo da gestão da cadeia de suprimentos. Devido à crescente diversidade e à extensão das cadeias, as questões ambientais tornaram-se hoje um tópico de pesquisa desafiador dentro deste contexto. Além disso, os recentes escândalos ambientais trazem à tona a negligência acerca das questões ambientais por parte de grandes empresas. O presente estudo explora, portanto, a gestão de riscos ambientais na cadeia de suprimentos. Para isso, foi realizada, inicialmente, uma revisão sistemática da literatura a fim de identificar os riscos ambientais presentes nas cadeias de suprimentos de uma empresa, a reação dos stakeholders perante esses riscos, que se desdobram em consequências para as empresas, bem como as estratégias ambientais para mitigação dos riscos. São identificados quatorze riscos ambientais, três principais consequências e dezenove estratégias que se relacionam através de um framework proposto. Posteriormente, um múltiplo estudo de caso é conduzido em três empresas situadas no Brasil, com a finalidade de verificar a relação das variáveis identificadas na literatura com as realidades organizacionais. Constata-se que a maioria dos riscos e estratégias ambientais advindas da revisão da literatura é também observada nas empresas estudadas e, dentre as consequências, as mais citadas pelas organizações são perdas reputacionais e financeiras. A partir dos estudos de casos, é possível complementar e validar os estudos acadêmicos existentes, endossando, assim, a discussão sobre o gerenciamento de riscos ambientais na cadeia de suprimentos. / [en] Risk management in supply chains has emerged as one of the most attractive research topics in the supply chain management field. Due to increasing diversity and the growing size of supply chains, environmental issues have today become a challenging research topic in supply chain risk management. Besides that, the recent environmental accidents bring to light the neglect of environmental issues by large companies. Thus, the present study explores the environmental risk management in supply chains. For this, a systematic literature review is carried out in order to identify the environmental risks present in the supply chain of a company, the reaction of the stakeholders to these risks, which unfold as consequences for the companies, as well as the strategies for mitigating these risks. It is identified fourteen environmental risks, three main consequences and nineteen strategies that are related by a proposed framework. Subsequently, a multiple case study is conducted in three companies located in Brazil, with the purpose of verifying the relationship of the variables identified in the literature with the organizational realities. It is verified that most of the risks and environmental strategies coming from the academic literature are observed by the companies and, among the consequences, the most cited ones are related to the company s reputation and financial consequences. From the cases studies, it is possible to complement and validate the existing academic studies, in order to endorse the discussion about environmental risk management in the supply chain.
185

Guidelines for the professional development of Mathematics teachers in the pedagogical use of ICT in open distance learning / Verona Leendertz

Leendertz, Verona January 2013 (has links)
Professional development (PD) of teachers is part of the Department of Basic Education‘s (DBE) initiative to encourage school communities to use of information and communication technology (ICT) to improve the quality of Mathematics teaching and learning. The South African Council of Educators stipulates that PD programmes should align with system-wide needs, strengthen learning area content and outcomes, and promote system transformation. Imbedded in this system-wide criterion is The White Paper on e-Education to employ a fully ICT integrated system at all levels of education: management, teaching and learning, and administration by 2013. Mathematics teachers require PD that develops their technological pedagogical and content knowledge (TPACK) and their social professional identity (SPI). The PD of Mathematics teachers for ICT integration can assist the DBE to achieve the aims of The White Paper on e-Education and bridge the technology gap between South Africa and international education systems. Open distance learning (ODL) could be a viable method to deliver PD to Mathematics teachers to address their zone of proximal development, develop their TPACK, and establish and maintain their SPI. This study made use of a fully mixed sequential equal status multi-mode research design and methodologies to develop guidelines for the PD of Mathematics teachers in the pedagogical use of ICT in ODL. The qualitative phase (Phase I) was rooted in the interpretivist paradigm. Through an adjustable exploration of a systematic literature review, the researcher identified 23 core documents, analysed them with Atlas.ti™, and conceptualised four themes according to Engeström‘s third generation activity theory (AT). Phase II (radical exploration phase) of the research design was rooted in the radical structuralist paradigm. In the context of transformation, it developed, validated, and standardised a research instrument for the measurement of Mathematics teachers‘ PD requirements. The instrument was distributed to 300 senior phase (grades 7-9) Mathematics teachers in eight education management district centres of the WCED. The analyses of the quantitative data conceptualised a fifth activity system. The five activity systems from the adjustable and radical exploration phases were symbiotic, and co-dependent. Expansive learning was used for boundary crossing and network building during six phases of this study. The findings from the six phases of the expansive learning cycle indicated that PD of Mathematics teachers in ODL for Phase III implementation of the e-Education policy should be a joint initiative. Fundamentally ICT integration and implementation should start with Department of Basic Education (DBE) initiatives. The DBE and Provincial Departments of Education (PDEs) should conduct a needs analysis of ICT implementation, evaluate previous ICT PD programmes, plan ICT PD strategies aligned with the ICT development plan, as well as with the requirements of the Mathematics teachers. The DBE and PDE should invest in the provision of ICT equipment, afford human capital, reinstate the laptop initiative for teachers, and supply schools with networked-computer facilities to explore online platforms for PD. Mathematics teachers should assess their professional knowledge to construct new philosophies, create a subject network group, and interact as participants and members within their social environments. The standardised instrument could be used to determine and compare the PD of Mathematics teachers in other provinces and contexts. / PhD (Training and development), North-West University, Potchefstroom Campus, 2014
186

Guidelines for the professional development of Mathematics teachers in the pedagogical use of ICT in open distance learning / Verona Leendertz

Leendertz, Verona January 2013 (has links)
Professional development (PD) of teachers is part of the Department of Basic Education‘s (DBE) initiative to encourage school communities to use of information and communication technology (ICT) to improve the quality of Mathematics teaching and learning. The South African Council of Educators stipulates that PD programmes should align with system-wide needs, strengthen learning area content and outcomes, and promote system transformation. Imbedded in this system-wide criterion is The White Paper on e-Education to employ a fully ICT integrated system at all levels of education: management, teaching and learning, and administration by 2013. Mathematics teachers require PD that develops their technological pedagogical and content knowledge (TPACK) and their social professional identity (SPI). The PD of Mathematics teachers for ICT integration can assist the DBE to achieve the aims of The White Paper on e-Education and bridge the technology gap between South Africa and international education systems. Open distance learning (ODL) could be a viable method to deliver PD to Mathematics teachers to address their zone of proximal development, develop their TPACK, and establish and maintain their SPI. This study made use of a fully mixed sequential equal status multi-mode research design and methodologies to develop guidelines for the PD of Mathematics teachers in the pedagogical use of ICT in ODL. The qualitative phase (Phase I) was rooted in the interpretivist paradigm. Through an adjustable exploration of a systematic literature review, the researcher identified 23 core documents, analysed them with Atlas.ti™, and conceptualised four themes according to Engeström‘s third generation activity theory (AT). Phase II (radical exploration phase) of the research design was rooted in the radical structuralist paradigm. In the context of transformation, it developed, validated, and standardised a research instrument for the measurement of Mathematics teachers‘ PD requirements. The instrument was distributed to 300 senior phase (grades 7-9) Mathematics teachers in eight education management district centres of the WCED. The analyses of the quantitative data conceptualised a fifth activity system. The five activity systems from the adjustable and radical exploration phases were symbiotic, and co-dependent. Expansive learning was used for boundary crossing and network building during six phases of this study. The findings from the six phases of the expansive learning cycle indicated that PD of Mathematics teachers in ODL for Phase III implementation of the e-Education policy should be a joint initiative. Fundamentally ICT integration and implementation should start with Department of Basic Education (DBE) initiatives. The DBE and Provincial Departments of Education (PDEs) should conduct a needs analysis of ICT implementation, evaluate previous ICT PD programmes, plan ICT PD strategies aligned with the ICT development plan, as well as with the requirements of the Mathematics teachers. The DBE and PDE should invest in the provision of ICT equipment, afford human capital, reinstate the laptop initiative for teachers, and supply schools with networked-computer facilities to explore online platforms for PD. Mathematics teachers should assess their professional knowledge to construct new philosophies, create a subject network group, and interact as participants and members within their social environments. The standardised instrument could be used to determine and compare the PD of Mathematics teachers in other provinces and contexts. / PhD (Training and development), North-West University, Potchefstroom Campus, 2014
187

Characterisation of an Additively Manufactured Self-Sensing Material Using Carbon Fibre Sensors

Williamson, Alain January 2023 (has links)
Increasing demand for structural health monitoring in space highlights the need to make the creation of these systems more accessible. This study investigates the potential of additive manufacturing to achieve this goal by characterizing a self-sensing material made of a commercially available 3D-printed continuous carbon fibre filament. The results demonstrate the feasibility of converting the filament into a strain sensor with improved sensitivity compared to conventional foil strain gauges. Mechanical and electromechanical properties of the self-sensing material were characterized, including an ultimate tensile strength of 45.09 ± 3.45 MPa, a failure strain of 38.93 ± 3.41%, and a base resistance of 759.11Ω. The tensile gauge factor was calculated to be 467.06 ± 375.90 within the strain range of 0% to 3.8% with a linearity (R2) of 0.93. For the first time, a systematic literature review compares mechanical and electromechanical properties to enable material selection for mechanical design incorporating self-sensing material. The study highlights that the spread of material properties in a group of materials indicates how well-developed a material is for self-sensing purposes. This study advances our understanding of the feasibility of using additive manufacturing to create self-sensing materials for structural health monitoring systems and opens up new avenues for further research.
188

[pt] CADEIAS DE SUPRIMENTOS SUSTENTÁVEIS: SÍNTESE TERCIÁRIA DA LITERATURA E ANÁLISE DE REDES / [en] SUSTAINABLE SUPPLY CHAINS: TERTIARY SYNTHESIS AND NETWORK ANALYSIS

VINICIUS CARVALHO C DE OLIVEIRA 04 February 2021 (has links)
[pt] Este trabalho tem como base a análise sistemática de literatura para geração de conhecimento sobre o tema de cadeias de suprimentos sustentáveis. Para isso, foram utilizados os métodos de revisão sistemática de literatura e análise de redes, para responder as perguntas de pesquisa: quais são as principais taxonomias sobre o tema, quais são os principais direcionamentos de pesquisa futura e como os temas de cadeias de suprimentos sustentáveis se relacionam. Dessa forma, baseando-se em protocolo metodológico rigoroso e utilização do software Vosviwer, foram identificadas as principais taxonomias sobre o tema, os cinco principais assuntos que os autores mais direcionam como pesquisas futuras e as principais relações geradas a partir das análises de coautoria, co-citação, co-ocorrência. Com base nos resultados, foi possível identificar diversos pontos, como o avanço nos trabalhos envolvendo os pilares de forma integrada, as revisões sistemáticas possuindo metodologia mais robusta que revisões narrativas e o aspecto social como o principal tema indicado para pesquisas futuras. Dessa forma, consolidou-se o que se tem de mais novo na literatura sobre o tema de cadeias de suprimentos sustentáveis, orientando a comunidade científica e outras organizações sobre o assunto, mostrando ainda, os possíveis desdobramentos que podem ser trabalhos. / [en] This paper is based on a systematic literature review to create knowledge on the topic of sustainable supply chains. For this, we used the systematic literature review and network analysis methods to answer the research questions: what are the main taxonomies on the topic, what are the main directions for future research and how are the themes of sustainable supply chain themes related? Thus, based on a rigorous methodological protocol and the use of Vosviwer software, the main taxonomies on the topic were identified, the five main trend subjects were collected and the main relationships identified from the co-authoring, co-citation and co-occurrence analysis. Based on the results, it was possible to identify several points, such as the progress in the work involving the pillars in an integrated manner, systematic reviews having a more robust methodology than narrative reviews and the social aspect as the main theme indicated for future research. Thus, the latest in the literature on the topic of sustainable supply chains was consolidated, guiding the scientific community and other organizations on the subject, and also showing the possible developments that may be work.

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