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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.
11

Využití ontologií k modelovaní flexibilní výroby v Průmyslu 4.0 / Utilization of Ontologies for Flexible Production Modelling in Industry 4.0

Matyáš, Petr January 2021 (has links)
The topic of this Master thesis is ontologies and the methods of their design using OWL. The thesis aims to provide a manual on the design of ontologies and demonstrate the use of this manual in the environment of Industry 4.0. The actual manual is preceded by chapters presenting the used semantic web technologies from a state-of-the-art point of view. The work is concluded by the author's evaluation of the suitability of the use of given technologies. 1
12

Investigating the robot pool from a cyber-physical production system perspective

Muñoz Rocha, Angel, Morilla Cabello, Pablo January 2023 (has links)
The current industry landscape is witnessing a trend towards high-mix production, which requires a reconsideration of the existing production systems. Although high levels of automation have been achieved in the industry, the traditional automated production line, designed for mass production of homogeneous goods, is not well-suited for high-mix production. To address this situation, flexible and adaptable alternatives have been sought to replace the inflexible and rigid traditional production lines. One of the proposed solutions is the combination of digital technology and physical automation, creating a highly connected and intelligent production environment. Such an environment requires the implementation of a cyber-physical production system that integrates Industry 4.0 technologies, such as Automated Guided Vehicles (AGVs) and flexible robots. This system enables a set of robots to perform different tasks instead of being exclusively dedicated to a specific task, making it moreadaptable and flexible. The integration of advanced technologies, such as AGVs and Cyber-Physical Production Systems (CPPS), can significantly enhance workflow optimization, reduce production times, and enable flexible layout adaptations to cater to the specific requirements of different products in the production line. Furthermore, it can facilitate better control of information and enable real-time monitoring of the production process, leading to improved production efficiency and quality. To demonstrate the potential of such a system, a virtual commissioning of a fully innovative production line has been carried out, encompassing all the previously mentioned technologies and elements. The virtual commissioning of the production line serves as a proof-of-concept for the cyber-physical production system and its ability to provide a highly connected, intelligent, and adaptable production environment. / <p>Utbytesstudenter</p>
13

O SENTIDO ATRIBUÍDO À EDUCAÇÃO E À EDUCAÇÃO FÍSICA PELA LÓGICA DA PRODUÇÃO FLEXÍVEL NA REDE ESTADUAL DE EDUCAÇÃO DE GOIÁS. / THE SENSE THAT HAS BEEN GIVEN TO THE EDUCATION AND THE PHYSICAL EDUCATION BY THE FLEXIBLE PRODUCTION LOGIC ON GOIÁS EDUCATIONAL SYSTEM.

Carvalho, Ana Júlia Rodrigues 03 April 2014 (has links)
Made available in DSpace on 2016-07-27T13:53:12Z (GMT). No. of bitstreams: 1 ANA JULIA RODRIGUES CARVALHO.pdf: 1203880 bytes, checksum: 99c076e699063899697bc07e5e731db3 (MD5) Previous issue date: 2014-04-03 / This study investigates the sense that has been given to the Education and the Physical Education in the night shift on Goiás educational system under its highest dictates, what means, the arrangements of the flexible production, which begins a new modus operandi in the cash way of doing. For this attempt, it has sought to analyze the official documents which standardize the brazilian education and specially the high school, the Directives and Bases of National Education Act (LDB 9394/96), the High School National Curriculum Standard Resolution 03/98 ( PCNEM) and the High School National Curriculum Directives (DCNEM). It still given the predictions the use of document analysis in this investigation, it also has been in analysis the document which directed the state system units in the accession to the New Significance project of high school: High School New Significance a way to the quality; as well as the curriculum direction of Physical Education, particular document of the area in this project. It has been applied questionnaires to the night shift students that still were studying in the new significance high school, which was supposed to give up. The considerations point the contradictions of making between the main document and the particular document of the Physical Education in the new significance project. In the interface with the empirical data systemized by the questionnaires, the night shift students show that the Physical Education in school don&#8223;t accomplish its role on human development, and considers, especially, the working class concerns. The break project that has begun by the Physical Education in the beginning 80s, therefore, is an unfinished project. / Este trabalho investiga o sentido atribuído a Educação e a Educação Física no turno noturno da rede estadual de Educação do Estado de Goiás sob suas determinações mais determinantes, qual seja, os arranjos da produção flexível, que inaugura um novo modus operandi no modo de realização do capital. Para tal intento buscou-se analisar os documentos oficiais que normatizam a educação brasileira e em especial o ensino médio, sendo estes a Lei de Diretrizes e Bases da Educação Nacional (LDB 9394/96), os Parâmetros Curriculares Nacionais para o Ensino Médio Resolução 03/98 (PCNEM) e as Diretrizes Curriculares Nacionais para o Ensino Médio (DCNEM). Ainda no que tange o uso da análise de documentos nessa investigação, também estiveram em análise o documento que orientou as unidades da rede estadual na adesão ao projeto de ressignificação do ensino médio: Ressignificação do ensino médio - um caminho para a qualidade; bem como as orientações curriculares da Educação Física, documento específico da área nesse projeto. Foram também aplicados questionários aos estudantes do turno noturno que ainda cursavam o ensino médio ressignificado, em eminência de encerrar. As considerações apontam as contradições na tessitura entre o documento norteador e o documento específico da Educação Física no projeto de ressignificação. Na interface com os dados empíricos sistematizados pelos questionários, os estudantes do turno noturno revelam que a Educação Física na escola não cumpre com seu papel de formação humana, e que considere, sobretudo, os anseios da classe trabalhadora. Desse modo, o projeto de ruptura iniciado pela Educação Física no início dos anos 80 é um projeto inacabado.
14

A gestão pelo medo: hegemonia e despotismo no trabalho flexível

Oliveira, Théo Darlington Mano de 19 November 2015 (has links)
Made available in DSpace on 2016-04-25T20:21:33Z (GMT). No. of bitstreams: 1 Theo Darlington Mano de Oliveira.pdf: 847584 bytes, checksum: 322932db3db98517d4957dd97f8ad412 (MD5) Previous issue date: 2015-11-19 / The metalworker employed in the ABC Paulista vehicles automakers demonstrates, today, little interest in Trade Union and collective struggles and resistance in adherence to labor movements, except in occasional moments of mass layoffs and job loss. The objective of this research is to know the processes and forms used for dissemination and maintenance of fear as a means of coercion and subliminal cooptation, necessary for the construction of hegemonic management work in the productive processes of the current post-fordist context / O trabalhador metalúrgico empregado nas montadoras de veículos do ABC paulista demonstra, hoje em dia, pouco interesse pelas lutas sindicais e coletivas e uma resistência na adesão aos movimentos classistas, salvo em momentos pontuais de demissões em massa e perda de emprego. O objetivo deste trabalho de pesquisa é conhecer os processos e as formas utilizadas para a difusão e manutenção do medo como meio subliminar de coerção e de cooptação, necessários à construção da gestão hegemônica do trabalho nos processos produtivos do atual contexto pós-fordista
15

A gestão pelo medo: hegemonia e despotismo no trabalho flexível

Oliveira, Théo Darlington Mano de 19 November 2015 (has links)
Made available in DSpace on 2016-04-26T14:55:44Z (GMT). No. of bitstreams: 1 Theo Darlington Mano de Oliveira.pdf: 847584 bytes, checksum: 322932db3db98517d4957dd97f8ad412 (MD5) Previous issue date: 2015-11-19 / The metalworker employed in the ABC Paulista vehicles automakers demonstrates, today, little interest in Trade Union and collective struggles and resistance in adherence to labor movements, except in occasional moments of mass layoffs and job loss. The objective of this research is to know the processes and forms used for dissemination and maintenance of fear as a means of coercion and subliminal cooptation, necessary for the construction of hegemonic management work in the productive processes of the current post-fordist context / O trabalhador metalúrgico empregado nas montadoras de veículos do ABC paulista demonstra, hoje em dia, pouco interesse pelas lutas sindicais e coletivas e uma resistência na adesão aos movimentos classistas, salvo em momentos pontuais de demissões em massa e perda de emprego. O objetivo deste trabalho de pesquisa é conhecer os processos e as formas utilizadas para a difusão e manutenção do medo como meio subliminar de coerção e de cooptação, necessários à construção da gestão hegemônica do trabalho nos processos produtivos do atual contexto pós-fordista
16

Mudanças organizacionais e diferenciação social: os trabalhadores da indústria do alumínio primário paraense

Barbosa, Attila Magno e Silva 20 August 2010 (has links)
Made available in DSpace on 2016-06-02T20:38:25Z (GMT). No. of bitstreams: 1 3362.pdf: 854635 bytes, checksum: 3839dd9bde3abe6dfb5e9f3e64cd7aeb (MD5) Previous issue date: 2010-08-20 / Universidade Federal de Sao Carlos / This study intends to examine to what extent the organizational changes in industry of primary aluminum, in the city of Barcarena, Pará, lead to worker s adhesion and results differentiation in the social identities of direct and outsourced workers. Outsourced workers have a different status in the workplace, which excludes them from the benefits offered by the companies. As a result, society has to deal not only with the fragility of the wage relationship, but also with the collapse of the principles that regulate sociability among workers. The thesis is that the company organizational changes produce the adhesion of direct workers to the organizational ideas cause give them a feeling of colective belonging, even when we take into consideration the reduction of the workers that productive by lean production processes. Fifteen interviews were conducted with each group of workers; two union leaders were also interviewed. Furthermore, were examined the collective agreement between the direct workers and the company, and that company s yearly reports, since 2003. / O objetivo deste trabalho é analisar em que medida as mudanças organizacionais ocorridas em uma indústria de alumínio primário no município de Barcarena, no Estado do Pará, promove a adesão dos trabalhadores e a diferenciação social entre trabalhadores diretos e terceirizados. Como se sabe, os terceirizados possuem estatuto diferenciado no espaço de trabalho, o que os exclui da rede de benefícios oferecida pelas empresas. Nesse sentido, a sociedade passa a conviver não apenas com a fragilidade presente na relação salarial, mas também com o desmoronamento dos princípios reguladores da sociabilidade entre os trabalhadores. A tese que defendemos é a de que as mudanças organizacionais implantadas a partir da década de 1990 na empresa produzem certa adesão dos trabalhadores diretos ao ideário organizacional da empresa por lhes conferir um sentido de pertença coletiva, mesmo quando se considera a redução dos quadros funcionais promovida pelas reestruturações produtivas. Foram realizadas 15 entrevistas com cada grupo de trabalhadores e duas entrevistas com dirigentes sindicais; também analisamos o acordo coletivo dos trabalhadores diretos com a empresa e os relatórios anuais desta desde o ano de 2003.
17

O DOMÍNIO DA NORMA CULTA DA LÍNGUA PORTUGUESA NO MUNDO DO TRABALHO: inclusão/exclusão no sistema de produção flexível / THE DOMAIN OF THE STANDARD CULTURED LANGUAGE OF THE PORTUGUESE LANGUAGE IN THE WORLD OF LABOR: inclusion/exclusion in flexible manufacturing system

Araújo, Eneida Maria Erre 11 July 2012 (has links)
Made available in DSpace on 2016-08-17T13:54:31Z (GMT). No. of bitstreams: 1 dissertacao Eneida Maria.pdf: 799095 bytes, checksum: 75a6d26222ee8a23695b63cea71a59e7 (MD5) Previous issue date: 2012-07-11 / The present study is the result of the research "The domain of the standard cultured language of the Portuguese language in the world of labor: inclusion/exclusion in flexible manufacturing system", which was developed at Masters degree level. The objective of this research is to analyze the relevance attributed to the knowledge of the cultural norms of the Portuguese language as a determinant of inclusion/exclusion in the selection processes of enterprises in the city of São Luís, considering the technical and organizational changes in the workplace. It is noteworthy that reality into operation in the present moment requires a professional multipurpose holder of new cognitive abilities, skills and psychological techniques, and mastery of oral and written language, such as factor productivity, ie, requires highly skilled professionals to work in world of labor. For this work we performed an analysis of existing literature, followed by a survey using structured interviews. The theoretical basis of studies of Saussure and Chomsky is the starting point to discuss the concepts of language and language that directs the company. The concept of language as ordered heterogeneity Labov, plus the research of Bagno and Bortoni Ricardo on communication skills are fundamental to the understanding and discussion of how does the inclusion/exclusion of candidates in the World of Labor. The results that emerged from this study show the important position given to the knowledge of the cultural norms of the Portuguese language in the process of selection of the companies leading to realization that the language turns out to exclude the worker from the production process, when he doesn t display the field standard cultured language of the Portuguese which is considered a linguistic variant "correct" used by a particular social group. / O presente estudo é o resultado da pesquisa O domínio da norma culta da língua portuguesa no mundo do trabalho: inclusão/exclusão no sistema de produção flexível , que se desenvolveu em nível de mestrado, com o objetivo de analisar o domínio da norma culta da língua portuguesa como determinante de inclusão/exclusão nos processos de seleção das empresas privadas da cidade de São Luís, considerando as mudanças técnico-organizacionais do mundo do trabalho. Destaca-se que a realidade vigorada no momento presente exige um profissional polivalente, possuidor de novas habilidades cognitivas, competências técnicas e psicológicas, além de domínio de linguagem oral e escrita. Para este trabalho foi realizada uma revisão de literatura sobre a temática, seguida de uma pesquisa de campo, utilizando entrevistas semiestruturadas. A sustentação teórica dos estudos de Saussure e Chomsky constitui o ponto de partida para se problematizar as concepções de língua e linguagem que orienta as empresas. O conceito de língua como heterogeneidade ordenada de Labov, acrescido das pesquisas de Bagno e Bortoni-Ricardo sobre a competência comunicativa são fundamentais para o entendimento e discussão de como se dá a inclusão/exclusão de candidatos no mundo do trabalho. Os resultados que emergiram deste estudo mostram a posição de relevância dada ao domínio da norma culta da língua portuguesa em processos de seleção das empresas, levando a constatação de que a língua acaba por excluir o trabalhador do processo produtivo, quando este não apresenta o domínio da norma culta da língua portuguesa que é considerada a variedade linguística correta utilizada por determinado grupo social.
18

Dopravník obrobků / Workpiece conveyor

Vaníček, David January 2018 (has links)
This master‘s thesis is focused on the design of manipulator for crankshaft handling in flexible production lines. The first part describes the types of production lines and possible ways of inter-operative manipulation. With regard to the suitability of their use, a suitable variant is selected, which is then conceptually processed and verified by technical calculations. The final conclusion is the verification of the design in terms of safety. Part of the master‘s thesis is technical drawing documentation.
19

Modeling of a Modular Discrete Event Simulation for Fuel Cell Assembly within a Factory Model

Brützel, Oliver, González Di Miele, Román Ignacio, Overbeck, Leonard, May, Marvin Carl, Lanza, Gisela 27 May 2022 (has links)
Nowadays, shorter product life cycles and fluctuating demand quantities require flexible and adaptable production planning techniques. Fuel cell technology offers an innovative product, for which future demands in terms of quantities and variety are difficult to predict making it hardly possible to plan demand-adequate production capacities. One feasible solution is the application of Discrete Event Simulations (DES) with a high degree of adaptability and scalability. In this paper, a concept for the modular simulation of assembly lines with scalable automation is introduced and applied to an assembly line for fuel cell stacks. The model presents a modular and hierarchical system structure, which allows for adaptability and reusability. The model can be easily integrated on a factory level to study the behavior of parallel assembly lines. For an industrial use case different experiments offer valuable insights for the optimization, the automation and the upscaling of the assembly. / Kürzere Produktlebenszyklen und schwankende Bedarfsmengen erfordern heute flexible und anpassungsfähige Produktionsplanungstechniken. Die Brennstoffzellentechnologie bietet ein innovatives Produkt, dessen zukünftige Nachfrage hinsichtlich Stückzahl und Vielfalt nur schwer vorhersehbar ist und somit kaum bedarfsgerechte Produktionskapazitäten planbar sind. Eine mögliche Lösung ist die Anwendung von Discrete Event Simulations (DES) mit einem hohen Maß an Anpassungsfähigkeit und Skalierbarkeit. In diesem Beitrag wird ein Konzept zur modularen Simulation von Montagelinien mit skalierbarem Automatisierung vorgestellt und auf eine Montagelinie für Brennstoffzellenstacks angewendet. Das Modell nutzt eine modulare und hierarchische Systemstruktur, die Anpassungsfähigkeit und Wiederverwendbarkeit ermöglicht. Das Modell kann leicht auf Fabrikebene integriert werden, um das Verhalten paralleler Montagelinien zu untersuchen. Für einen industriellen Anwendungsfall bieten verschiedene Experimente wertvolle Erkenntnisse zur Optimierung, Automatisierung und Hochskalierung der Montagelinie.
20

Снижение риска при выполнении проектно-конструкторских работ (на примере САПР роботизированного станочного модуля) : магистерская диссертация / Reduction of risk in the performance of design engineering (as in the case of CAD robotic machine module)

Дербенева, А. Е., Derbeneva, A. E. January 2018 (has links)
The first chapter describes the situation of the use of industrial robots in the market of machine-building production. The sales volumes of modern robots are considered depending on the industries where they are applied. Comparative statistics on the implementation of robots for performing various operations are also given. The level of robotization in Russia and in the world is analyzed. The advantages and disadvantages associated with the introduction of robots into enterprises are revealed. In the second chapter, the topic of flexible production systems is discussed. The existing systems for designing flexible machining modules are evaluated. It also provides a definition of risk, its evaluation. The types of risks were identified during the implementation of the robotic machine module at the enterprise of the machine-building complex. Methods for determining the magnitude of risks are presented. The third chapter presents the most commonly used tools for risk analysis. The main features of the expert assessment method are considered in details. The sequence of actions of the expert survey is presented. On the basis of the chosen method, an order of actions for assessing the risks of the robotic modules presented in the second chapter of the CAD algorithms was developed. Visual images based on summary tables of each CAD algorithm are constructed. Measures to eliminate intolerable risks are suggested. The master's thesis consists of an explanatory note of 80 pages, 18 figures, 11 tables and includes an introduction, three chapters, conclusion, a list of sources used, consisting of 35 titles, and three appendixes. / В 1-й главе описывается ситуация применения промышленных роботов на рынке машиностроительного производства. Рассмотрены объемы продаж современных роботов в зависимости от отраслей, где они применяются. Также была приведена сравнительная статистика по реализации роботов для выполнения различных операций. Проанализирован уровень роботизации в России и в мире. Выявлены преимущества и недостатки, связанные с внедрением роботов на предприятия. Во 2-й главе затрагивается тема гибких производственных систем. Осуществляется оценка существующих систем проектирования гибких модулей механообработки. Также дается определение риска, его оценки. Были выявлены виды рисков при внедрении роботизированного станочного модуля на предприятии машиностроительного комплекса. Приводятся методы для определения величины рисков. В 3-й главе представлены наиболее часто используемые инструменты для анализа рисков. Рассмотрены более подробно основные особенности метода экспертных оценок. Представлена последовательность действий экспертного опроса. На основе выбранного метода был разработан порядок действий оценки рисков приведенных во второй главе алгоритмов САПР роботизированных модулей. Построены наглядные изображения на основе сводных таблиц каждого алгоритма САПР. Предложены мероприятия по устранению непереносимых рисков. Магистерская диссертация состоит из пояснительной записки объемом 80 страниц, 18 рисунков, 11 таблиц и включает в себя введение, три главы, заключение, список использованных источников, состоящий из 35 наименований, а также три приложения.

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