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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.
1

Lean Sigma Applications to Service Departments in the Healthcare Industry

Gimenes, Douglas Almeida 01 May 2011 (has links)
The Health Care System has struggled with many problems such as medical errors, poorly designed processes, waste, and customer dissatisfaction. The Lean Six Sigma methodology has been shown to be efficient in solving problems in the manufacturing industry and in services, as well. In this study, a framework for applying Lean Six Sigma to the health care industry is presented. The framework depicts a systematic methodology to solve problems typically found in this industry. A case study is also presented on how to apply this framework. The DMAIC Model has been conducted in an Imaging Department to identify the root causes of problems and to define a future state of the process
2

Um roteiro para a redução de tempo no desenvolvimento de projetos de software. / A roadmap for cycle time reduction in software development.

André Luiz Dias Ribeiro 15 December 2006 (has links)
A realização de projetos dentro do prazo estabelecido é um fator comum em diversas áreas de produção como a engenharia civil, de aviação, química, transportes, indústria em geral, entre outras. No entanto, na engenharia de software, a questão do tempo na construção de um produto é um desafio de processo a ser superado em cada novo projeto. O cumprimento de prazos no desenvolvimento de software é tão crítico que o próprio controle de atrasos no ciclo de produção é um fator a ser considerado na análise de redução do tempo de desenvolvimento. A complexidade do ambiente de software, a competitividade de mercado, as mudanças de requisitos constantes durante o projeto e o tempo disponível cada vez mais restrito, aumentam as chances de insucesso quando analisado o indicador de tempo na produção de software. O objetivo deste trabalho é reunir e organizar as práticas e técnicas de engenharia de software em um roteiro que permita a redução do tempo no desenvolvimento do software. Neste roteiro, é descrita a utilização organizada e planejada das práticas de engenharia de software que auxiliam no planejamento, na criação da arquitetura de solução, na definição da infra-estrutura técnica para reutilização e a utilização da engenharia simultânea, visando proporcionar ganhos reais no tempo de produção do software e no aumento da produtividade. / The completion of software project within schedule is a common goal in several industries like building engineering, aviation, chemical, transport, wares and so on. However, in software engineering, the schedule is a process challenge from the beginning of each new project. The time is so critical that the delay control is an analysis point for cycle time reduction in software development. The complex environment, the pressure to reduce time-to-market, frequent requirements changes during the project life-cycle, increase the failure chance of software projects when we analyze the time indicator in the software development process. The dissertation goal is to meet and to organize of software engineering practices and techniques in an organized roadmap aiming cycle time reduction in software development. In this roadmap, the practices are organized to help software planning, solution architecture, component based development definition, to promote reuse and concurrent engineering with purpose to reduce cycle time software development and improve productivity.
3

Um roteiro para a redução de tempo no desenvolvimento de projetos de software. / A roadmap for cycle time reduction in software development.

Ribeiro, André Luiz Dias 15 December 2006 (has links)
A realização de projetos dentro do prazo estabelecido é um fator comum em diversas áreas de produção como a engenharia civil, de aviação, química, transportes, indústria em geral, entre outras. No entanto, na engenharia de software, a questão do tempo na construção de um produto é um desafio de processo a ser superado em cada novo projeto. O cumprimento de prazos no desenvolvimento de software é tão crítico que o próprio controle de atrasos no ciclo de produção é um fator a ser considerado na análise de redução do tempo de desenvolvimento. A complexidade do ambiente de software, a competitividade de mercado, as mudanças de requisitos constantes durante o projeto e o tempo disponível cada vez mais restrito, aumentam as chances de insucesso quando analisado o indicador de tempo na produção de software. O objetivo deste trabalho é reunir e organizar as práticas e técnicas de engenharia de software em um roteiro que permita a redução do tempo no desenvolvimento do software. Neste roteiro, é descrita a utilização organizada e planejada das práticas de engenharia de software que auxiliam no planejamento, na criação da arquitetura de solução, na definição da infra-estrutura técnica para reutilização e a utilização da engenharia simultânea, visando proporcionar ganhos reais no tempo de produção do software e no aumento da produtividade. / The completion of software project within schedule is a common goal in several industries like building engineering, aviation, chemical, transport, wares and so on. However, in software engineering, the schedule is a process challenge from the beginning of each new project. The time is so critical that the delay control is an analysis point for cycle time reduction in software development. The complex environment, the pressure to reduce time-to-market, frequent requirements changes during the project life-cycle, increase the failure chance of software projects when we analyze the time indicator in the software development process. The dissertation goal is to meet and to organize of software engineering practices and techniques in an organized roadmap aiming cycle time reduction in software development. In this roadmap, the practices are organized to help software planning, solution architecture, component based development definition, to promote reuse and concurrent engineering with purpose to reduce cycle time software development and improve productivity.
4

Projektmetod för cykeltidsoptimering av CNC-maskiner / Project method for cycle time optimization of CNC machines

Dackebro, Johan, Jansson, Alexander January 2023 (has links)
Inom den automatiserade bearbetande metallindustrin är ett sätt att effektivisera produktionen, och följaktligen stärka konkurrenskraft, att cykeltidsoptimera CNC-maskiner. I avsikt att denna typ av optimeringsarbeten inte ska ske ostrukturerat, utan med systematik, syftar detta arbete till att arbeta fram ett förslag på en projektmetod avsedd för cykeltidsoptimering av CNC-maskiner. Vidare har intervjuer, arbetsuppföljning och observationer vid Scania CV ABs vevaxelproduktion tillsammans med relaterade litterära studier analyserats och filtrerats; och sedan använts för att tillhandahålla svar på arbetets frågeställningar: (1) Kan onödiga aktiviteter i CNC-cykler identifieras och kan dessa i sådant fall minimeras eller uteslutas? (2) Hur kan en projektmetod vara uppbyggd och vad kan den uppbyggnaden innefatta? Åtta stycken täckande aktiviteter i CNC-cyklar med optimeringspotential noterades. Där innefattas exempelvis väntetider, långsamma och onödiga sekvenser samt aktiviteter som kanske parallellt men ej gör det. Även praktisk arbetsgång för cykeltidsoptimering av CNC-maskiner och metoder för annan optimering identifierades. Sammanvägningen av de empiriska resultaten och de relaterade studierna visade att fasindelning och innehållet i en projektmetod kan skilja beroende på om metoden är generell eller specifikt anpassad. Efter att ha arbetat samtliga empiriska resultat och relaterade studier konstruerades ett förslag på projektmetod. Metoden har fem faser (potential, initiering, planering, utförande och avslutning) och presenteras i ett användargränssnitt. Gränssnittet tydliggör vad som ska utföras i respektive fas och hur. I ett utökat arbete kan gränssnittet utvecklas och optimeringsaspekter som kräver mer omfattande lösningar kartläggas samt definieras kopplat till hur de bör hanteras. / Within the automated metalworking industry, one way to make production more effective, and consequently strengthen and maintain competitiveness, is to optimize the cycle time of CNC machines. With the intention that this type of optimization work should not be done unstructured, but systematically, this work aims to develop a proposal for a project method intended for cycle time optimization of CNC machines. Furthermore, interviews, workfollow-up and observations at Scania CV AB's crankshaft production together with related literary studies have been analyzed and filtered; and then used to provide answers to the work's research questions: (1) Can unnecessary activities in CNC cycles be identified and, if so, can these be minimized or excluded? (2) How can a project method be structured and what can that structure include? Eight covering activities in CNC cycles with optimization potential were noted. This includes, for example, waiting times, slow and unnecessary sequences and activities that can take place parallelly but do not. Practical workflow for cycle time optimization of CNC machines and methods for other types optimization were also identified. The balance of the empirical results and the related studies showed that the phasing and content of a project method can differ depending on whether the method is general or specifically adapted. After working through all the empirical results and related studies, a proposal was put together for a project method. The method has five phases (potential, initiation, planning, execution and termination) and is presented in a user interface. The interface clarifies what must be done in each phase and how. In an extended work, the interface can be further developed and optimization aspects that require more comprehensive solutions can be mapped and defined in connection with how they should be handled.

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